公开(公告)号：WO2003078773A1

公开(公告)日：2003-09-25

申请号：PCT/CA2003/000388

申请日：2003-03-19

Applicant: CANIMEX INC.

Inventor： BEAUDOIN, Michel ,  NADEAU, Erik ,  FOUCAULT, Pierre-Louis ,  LEVESQUE, Jean-François ,  PROVENCHER, Pascal ,  BEAUDOIN, François

IPC: E05D13/00

CPC classification number: E05D13/003 ,  E05D13/1261 ,  E05D13/1269 ,  E05Y2900/00 ,  E05Y2900/106 ,  E06B9/62 ,  E06B9/84

Abstract: A safety braking device configured for use with the counterbalancing system of a garage door. The safety braking device includes a support bracket, a ratchet wheel, a pawl arm, and a biasing spring. The support bracket is rigidly connected to a fixed structure and has a guiding slot. The ratchet wheel is securely mounted about the overhead shaft of the counterbalancing system and has at least one notch. The pawl arm has first and second ends, the first end of the pawl arm being pivotally connected to the support bracket and the second end of the pawl arm cooperating with the guiding slot and being movable with respect to the support bracket along said guiding slot. The first and second ends of the pawl arm are further connected to flanges of a plug on either side of the overhead shaft. The biasing spring is operatively connected between the support bracket and the pawl arm so as to exert a biasing force for biasing the pawl arm towards the ratchet wheel. The pawl arm is devised so that, an element thereof is adjacent to the ratchet wheel, said element being shaped and sized to be removably insertable into at least one notch of the ratchet wheel so as to block rotation of the ratchet wheel, and thus block rotation of the overhead shaft, in the event of a failure of the counterbalancing system of the door.

Abstract translation: 一种配置成与车库门的平衡系统一起使用的安全制动装置。 安全制动装置包括支撑托架，棘轮，棘爪臂和偏置弹簧。 支撑支架刚性地连接到固定结构并具有引导槽。 棘轮被牢固地安装在平衡系统的顶部轴上并且具有至少一个凹口。 棘爪臂具有第一和第二端，棘爪臂的第一端枢转地连接到支撑托架，并且棘爪臂的第二端与引导槽配合并且可沿着所述引导槽相对于支撑托架移动。 棘爪臂的第一端和第二端进一步连接到顶置轴的任一侧上的插头的凸缘。 偏置弹簧可操作地连接在支撑支架和棘爪臂之间，以便施加用于将棘爪臂朝向棘轮偏压的偏置力。 棘爪臂被设计为使得其元件与棘轮相邻，所述元件的形状和尺寸被设计成可拆卸地插入到棘轮的至少一个凹口中，以阻止棘轮的旋转，从而阻挡 在门的平衡系统发生故障的情况下，顶置轴的旋转。

公开(公告)号：WO2002094473A1

公开(公告)日：2002-11-28

申请号：PCT/CA2002/000747

申请日：2002-05-22

Applicant: CANIMEX INC.

Inventor： SAVARD, Normand ,  ALLEN, Guillaume ,  LAROCHELLE, Philippe

IPC: B21F35/02

CPC classification number: B21F1/002 ,  B21F3/027 ,  B21F35/02

Abstract: A device (1) for bending an extremity (3) of a torsional spring (5). The device includes a base plate (7); at least one flange (9) projecting from the base plate; at least one bulge (11) projecting from the at least one flange; a lever arm (13) pivotally mounted onto the at least one flange about a first pivot axis; and at least one cam pivotally mounted onto the lever arm about a second pivot axis. The lever arm is operable between first and second positions and each cam (15) has a contact surface (21) being positioned for operatively cooperating with a corresponding bulge. Prior to the bending operation, the extremity of the torsional spring is inserted between a given bulge and the contact surface (21) of a corresponding cam when the lever arm is in the first position. In operation, the extremity of the spring is bent about the given bulge by the contact surface of the corresponding cam when the contact surface is urged towards the bulge and forced about the same over the extremity of the spring as the lever arm is operated into the second position. The device enables an easier, simpler and more cost effective way of bending an extremity of a torsional spring, without the use of heat for bending the spring tail, and may be easily transportable from one site to another. Moreover, the device can be used for bending the extremities of torsional springs having different wire sizes.

Abstract translation: 一种用于弯曲扭力弹簧（5）的末端（3）的装置（1）。 该装置包括基板（7）; 至少一个从基板突出的凸缘（9） 从所述至少一个凸缘突出的至少一个凸起（11）; 杠杆臂（13）围绕第一枢轴枢转地安装在所述至少一个凸缘上; 以及至少一个凸轮围绕第二枢转轴线枢转地安装到杠杆臂上。 杠杆臂可在第一和第二位置之间操作，并且每个凸轮（15）具有定位成与对应的凸起可操作地配合的接触表面（21）。 在弯曲操作之前，当杠杆臂处于第一位置时，扭转弹簧的末端插入到给定的凸起和相应凸轮的接触表面（21）之间。 在操作中，当接触表面被推向凸起时，弹簧的末端围绕给定的凸起弯曲，当接触表面被迫朝向凸起并且被迫在弹簧的末端上时，杠杆臂被操作到 第二名 该装置使得能够更容易，更简单和更具成本效益地弯曲扭转弹簧的末端的方式，而不需要使用热量来弯曲弹簧尾部，并且可以容易地从一个位置移送到另一个位置。 此外，该装置可用于弯曲具有不同线尺寸的扭转弹簧的末端。

公开(公告)号：WO2007090271A1

公开(公告)日：2007-08-16

申请号：PCT/CA2007/000168

申请日：2007-02-06

Applicant: CANIMEX INC. ,  BARRIAULT, Patrick ,  COURVILLE, Dominic ,  BEAUDOIN, Michel

Inventor： BARRIAULT, Patrick ,  COURVILLE, Dominic ,  BEAUDOIN, Michel

IPC: E05D13/00 ,  E06B9/62 ,  E06B9/84

CPC classification number: E05D13/003 ,  E05D13/1261 ,  E05D13/1269 ,  E05Y2900/00 ,  E05Y2900/106 ,  E06B9/84

Abstract: A braking device (1) configured for use with the counterbalancing system (3) of a garage door. The brake device (1) includes a support bracket (11), a ratchet wheel (13), a pawl arm (15), and a biasing spring (17). The support bracket (11) is rigidly connected to a fixed structure and has a guiding slot (45). The ratchet wheel (13) is securely mounted about the overhead shaft (5) of the counterbalancing system (3) and has at least one notch (23). The pawl arm (15) has first and second ends, the first end of the pawl arm (15) being pivotally connected to the support bracket (11) and the second end of the pawl arm (15) cooperating with the guiding slot (45) and being movable with respect to the support bracket (11) along said guiding slot (45). The first and second ends of the pawl arm (15) are further connected to flanges of a plug (7) on either side of the overhead shaft (5). The biasing spring (17) is operatively connected between the support bracket (11) and the pawl arm (15) so as to exert a biasing force for biasing the pawl arm (15) towards the ratchet wheel (13). The pawl arm (15) is devised so that, an element (31) thereof is adjacent to the ratchet wheel (13), said element (31) being shaped and sized to be removably insertable into at least one notch (23) of the ratchet wheel (13) so as to block rotation of the ratchet wheel (13), and thus block rotation of the overhead shaft (5), in the event of a failure of the counterbalancing system (3) of the door. The brake device (1) further includes a locking assembly configured to cooperate with the ratchet wheel (13) so as to securely mount the same onto the overhead shaft (5) and thus prevent the ratchet wheel (13) from being displaced along a longitudinal axis (5a) of the overhead shaft (5).

Abstract translation: 一种配置成与车库门的平衡系统（3）一起使用的制动装置（1）。 制动装置（1）包括支撑托架（11），棘轮（13），棘爪臂（15）和偏压弹簧（17）。 支撑托架（11）刚性地连接到固定结构并具有引导槽（45）。 棘轮（13）牢固地安装在平衡系统（3）的顶部轴（5）周围并且具有至少一个凹口（23）。 棘爪臂（15）具有第一和第二端，棘爪臂（15）的第一端枢转地连接到支撑托架（11），并且棘爪臂（15）的第二端与引导槽（45）配合 ）并且可沿着所述引导槽（45）相对于支撑托架（11）移动。 棘爪臂（15）的第一端和第二端进一步连接到顶置轴（5）的任一侧上的插头（7）的凸缘。 偏置弹簧（17）可操作地连接在支撑支架（11）和棘爪臂（15）之间，以便施加用于朝向棘轮（13）偏压棘爪臂（15）的偏压力。 棘爪臂（15）被设计成使得其元件（31）与棘轮（13）相邻，所述元件（31）的形状和尺寸被设计成可移除地插入到至少一个凹口 棘轮（13），以便在门的平衡系统（3）发生故障的情况下阻止棘轮（13）的旋转，从而阻止顶架轴（5）的旋转。 制动装置（1）还包括锁定组件，其被构造成与棘轮（13）配合，以将其牢固地安装在顶架轴（5）上，从而防止棘轮（13）沿纵向 （5）的轴线（5a）。

公开(公告)号：WO2007065267A1

公开(公告)日：2007-06-14

申请号：PCT/CA2006/002000

申请日：2006-12-08

Applicant: CANIMEX INC. ,  BEAUDOIN, Michel ,  FOUCAULT, Pierre-Louis ,  TREMBLAY, Richard ,  ROY, Vincent ,  ROBERT, Hélène

Inventor： BEAUDOIN, Michel ,  FOUCAULT, Pierre-Louis ,  TREMBLAY, Richard ,  ROY, Vincent ,  ROBERT, Hélène

IPC: F16H7/18 ,  B66D1/36 ,  E05F11/04 ,  E06B3/48 ,  E06B9/84 ,  F16H7/06

CPC classification number: E05F11/54 ,  B66D3/12 ,  B66D3/16 ,  B66D3/26 ,  E05D13/12 ,  E05F11/04 ,  E05F15/668 ,  E05F15/681 ,  E05Y2201/11 ,  E05Y2201/678 ,  E05Y2900/106

Abstract: A chain guide for guiding a chain within a chain hoist. The chain guide includes a substantially elongated body having an inner side and an outer side, along with first and second extremities. The substantially elongated body is made of a substantially flexible material for curving the substantially elongated body into a substantially arched configuration about a given wheel of the chain hoist. The chain guide also includes first and second chain receiving portions provided adjacent to the first and second extremities respectively of the substantially elongated body, on the inner side thereof. Each chain receiving portion comprises a pair of shoulders protruding from the inner side of the body and defining an open channel shaped and sized for slidably receiving a portion of the chain. The chain guide also includes a deformable Connecting portion for interconnecting the first and second chain receiving portions of the chain guide. Also described is a chain hoist provided with the chain guide.

Abstract translation: 用于引导链葫芦链条的链条导轨。 链条引导件包括具有内侧和外侧以及第一和第二末端的基本上细长的主体。 基本上细长的主体由基本上柔性的材料制成，用于将基本上细长的主体弯曲成围绕链葫芦的给定轮的基本上拱形的构造。 链条引导件还包括第一和第二链条接收部分，其在其内侧上分别设置在基本上细长的主体的第一和第二末端附近。 每个链条接收部分包括从主体的内侧突出的一对肩部，并且形成一个形状和尺寸适于可滑动地容纳链条的一部分的开放通道。 链条引导件还包括用于互连链条引导件的第一和第二链条接收部分的可变形连接部分。 还描述了设置有链条引导件的环链葫芦。

公开(公告)号：WO2003089747A1

公开(公告)日：2003-10-30

申请号：PCT/CA2003/000552

申请日：2003-04-14

Applicant: CANIMEX INC. ,  BOURASSA, Luc ,  KIDD, Douglas

Inventor： BOURASSA, Luc ,  KIDD, Douglas

IPC: E06B3/58

CPC classification number: E06B3/5892 ,  E06B3/54

Abstract: A frame assembly (1) and a method for installing a window pane (3) in an opening (5) of a panel (7). The assembly (1) includes an outer frame (9) having connecting devices (15) and an abutment member (17). The assembly (1) also includes an inner frame (19) provided with first connecting devices (25). The first connecting devices (25) cooperate with the connecting devices (15) of the outer frame (9) for disengageably connecting the outer and inner frames (9, 19). The assembly (1) also includes locking device (28) having at least one flexible element (31) cooperating with one of the frames (9, 19) for locking the locking device (28) in locking position, and at least one contacting element (33) for holding the window pane (3) in position with aid of the abutment member (17) when the locking device (28) is in the locking position.

Abstract translation: 一种框架组件（1）和一种用于在面板（7）的开口（5）中安装窗玻璃（3）的方法。 组件（1）包括具有连接装置（15）和抵靠构件（17）的外框架（9）。 组件（1）还包括设置有第一连接装置（25）的内框架（19）。 第一连接装置（25）与外框架（9）的连接装置（15）协作，用于可拆卸地连接外框架和内框架（9,19）。 组件（1）还包括锁定装置（28），其具有与框架（9,19）中的一个配合的至少一个柔性元件（31），用于将锁定装置（28）锁定在锁定位置，以及至少一个接触元件 （33），用于当锁定装置（28）处于锁定位置时借助于抵接构件（17）将窗玻璃（3）保持在适当的位置。

公开(公告)号：WO2007124576A1

公开(公告)日：2007-11-08

申请号：PCT/CA2007/000711

申请日：2007-04-27

Applicant: CANIMEX INC. ,  BEAUDOIN, François ,  PROVENCHER, Pascal

Inventor： BEAUDOIN, François ,  PROVENCHER, Pascal

IPC: E05D15/16 ,  E05D15/24 ,  E05F7/06 ,  E06B3/48 ,  E06B3/50

CPC classification number: E05D15/24 ,  E05B53/003 ,  E05B65/0021 ,  E05C9/00 ,  E05C9/043 ,  E05D13/1215 ,  E05Y2201/488 ,  E05Y2201/684 ,  E05Y2600/00 ,  E05Y2800/205 ,  E05Y2800/21 ,  E05Y2800/696 ,  E05Y2900/106 ,  E06B3/485 ,  E06B3/92 ,  E06B2003/7096 ,  Y10T16/602

Abstract: A kit (1) for assembling a variety of different door configurations adapted to be installed within a predetermined range of dimensions, onto a specific door opening (7) defined within a fixed structure (9) and contained within said predetermined range of dimensions. The kit (1) includes first components (11) for assembling a specific door leaf (13) shaped and sized for substantially covering the specific door opening (7). The kit (1) also includes second components (15) for mounting onto the fixed structure (9) of the specific door opening (7), the second components (15) including components (15) for assembling a track system (17) along which the specific door leaf (13) is configured to travel. The kit (1) also includes third components (19) for assembling a counterbalancing system (21) operatively connectable between the specific door leaf (13) and the fixed structure (9) for counterbalancing the specific door leaf (13) with respect to said fixed structure (9). The components (11 ,15,19) of the kit (1) are configured to be selectively adjustable along given increments for assembling a specific door assembly (23) representative of dimensions (25,27) of the specific door opening (7), and the components (11 , 15,19) of the kit (1 ) are further configured to be provided with adjustment means (29), and corresponding marking systems (31) representative of given increments, for selectively adjusting parameters of the components (11 ,15,19) of the kit (1) in response to the specific door leaf (13) being used for assembling the specific door assembly (23).

Abstract translation: 一种用于将适于安装在预定尺寸范围内的各种不同门构造的套件（1）安装到限定在固定结构（9）内且包含在所述预定尺寸范围内的特定门开口（7）上。 套件（1）包括用于组装形状和尺寸用于基本覆盖特定门开口（7）的特定门扇（13）的第一部件（11）。 套件（1）还包括用于安装在特定门开口（7）的固定结构（9）上的第二部件（15），第二部件（15）包括用于组装轨道系统（17）的部件（15） 特定门扇（13）被配置为行进。 套件（1）还包括用于组装可操作地连接在特定门扇（13）和固定结构（9）之间的平衡系统（21）的第三组件（19），用于相对于所述门 固定结构（9）。 套件（1）的部件（11,15,19）被构造成可以沿着给定的增量选择性地调节，用于组装代表特定门开口（7）的尺寸（25,27）的特定门组件（23） 并且所述套件（1）的组件（11,15,19）被进一步配置成设置有调节装置（29）和代表给定增量的对应的标记系统（31），用于选择性地调节部件的参数（11 ，15,19），以响应于用于组装特定门组件（23）的特定门扇（13）。

公开(公告)号：WO2005080725A1

公开(公告)日：2005-09-01

申请号：PCT/CA2005/000232

申请日：2005-02-21

Applicant: CANIMEX INC.

Inventor： MICHAUD, Stéphane ,  PROVENCHER, Pascal ,  FOUCAULT, Pierre-Louis

IPC: E05D13/00

CPC classification number: E05D13/006 ,  E05Y2201/11 ,  E05Y2201/638 ,  E05Y2201/654 ,  E05Y2201/66 ,  E05Y2900/106

Abstract: A device (1) for use with a cable-operated door (3), such as garage doors (3) and the like, and a door assembly including the same. The device (1) is intended to reduce the risk of the door (3) falling, or at the very least slow down its descent, in the event of a failure in the counterbalancing mechanism of the door (3), which is generally represented by a loss of tension in a given tensioned cable (5) operating the door (3). The brake device (1) includes a support bracket (9), and a guiding assembly (15) and a braking assembly (17) mounted onto the support bracket (9). The braking assembly includes a swivel component (18) having opposite braking arm (19) and lever portion (20), the lever portion cooperating with the tensioned cable (3) so that in the event of a loss of tension in the cable (5), the braking arm (19) is urged onto an adjacent rail (7) via biasing means (21) for anchoring a knife (45) of the braking arm (19) into the rail (7) and stopping, or at the very least, slowing down the descent of the door (3), with respect to the rail (7).

Abstract translation: 一种与诸如车库门（3）等的电缆操作门（3）一起使用的装置（1）和包括该装置的门组件。 在门（3）的平衡机构发生故障的情况下，装置（1）旨在降低门（3）下落的危险，或者至少使其下降的速度降低，这通常被表示 通过在操作门（3）的给定张紧的电缆（5）中失去张力。 制动装置（1）包括支撑托架（9）和安装到支撑托架（9）上的引导组件（15）和制动组件（17）。 制动组件包括具有相对的制动臂（19）和杠杆部分（20）的旋转部件（18），该杆部分与拉紧的缆线（3）协作，使得在电缆（5） ），通过用于将制动臂（19）的刀（45）锚固到轨道（7）中并且停止的偏压装置（21）将制动臂（19）推动到相邻轨道（7）上， 至少，相对于轨道（7）减慢门（3）的下降。

公开(公告)号：WO2003004815A1

公开(公告)日：2003-01-16

申请号：PCT/CA2002/001047

申请日：2002-07-08

Applicant: CANIMEX INC.

Inventor： BEAUDOIN, Michel ,  FOUCAULT, Pierre-Louis ,  TREMBLAY, Richard ,  FRÉCHETTE, Jonathan

IPC: E05D13/00

CPC classification number: E05F11/54 ,  E05D13/003 ,  E05D13/1261 ,  E05F11/04 ,  E05Y2900/00 ,  E05Y2900/106 ,  E06B9/84

Abstract: A drive mechanism for use with an overhead shaft of a sectional door for raising and lowering the door via a rotation of the overhead shaft. The drive mechanism has a support structure, a first gear, a drive shaft, a second gear, a pocket wheel and an actuator. The second gear is interconnected to the first gear so that a rotation of the second gear is transmitted to the first gear and vice versa. The pocket wheel is operable between first and second positions. The second gear is rotatable along a first direction corresponding to a raising of the sectional door and along an opposite second direction corresponding to a lowering of the sectional door. The actuator is used for rotating the pocket wheel about the drive shaft, operating the pocket wheel between the first and second positions, and driving the second gear along the first and second directions when the pocket wheel is in the second and first positions respectively. The drive mechanism includes a first ratched assembly for blocking rotation of the second gear along the second direction when the pocket wheel is in the second position. The drive mechanism may also include a second ratchet assembly for blocking rotation of the second gear along the first direction when the pocket wheel is in the first position.

Abstract translation: 一种驱动机构，用于与分段门的顶架轴一起使用，用于经由顶架轴的旋转升高和降低门。 驱动机构具有支撑结构，第一齿轮，驱动轴，第二齿轮，凹槽轮和致动器。 第二齿轮与第一齿轮互连，使得第二齿轮的旋转传递到第一齿轮，反之亦然。 口袋轮可在第一和第二位置之间操作。 第二齿轮沿对应于分段门的升高的第一方向和对应于分段门的下降的相反的第二方向旋转。 致动器用于围绕驱动轴旋转凹槽轮，在第一和第二位置之间操作凹槽轮，并且当凹槽轮分别处于第二和第一位置时沿着第一和第二方向驱动第二齿轮。 所述驱动机构包括第一带扣组件，用于在所述凹槽轮位于所述第二位置时阻止所述第二齿轮沿所述第二方向旋转。 驱动机构还可以包括第二棘轮组件，用于当凹轮处于第一位置时阻止第二齿轮沿着第一方向旋转。

公开(公告)号：US20040124050A1

公开(公告)日：2004-07-01

申请号：US10682162

申请日：2003-10-09

Applicant: Canimex Inc.

Inventor： Patrick Barriault ,  Francois Beaudoin ,  Danny Roy

IPC: F16F009/12

CPC classification number: E06B9/84 ,  E05D13/003 ,  E05D13/12 ,  E05D13/1215 ,  E05D13/1261 ,  E05Y2900/00 ,  E05Y2900/106 ,  E06B2009/808 ,  F16F9/19 ,  F16F2232/04

Abstract: A hydraulic governor device for use with a rotational shaft of a door assembly for controlling a rotation of said rotational shaft. The device includes a sleeve; first and second end coverings mounted respectively onto first and second ends of the sleeve so as to define an hydraulic flow path; a fluid substantially filling the hydraulic flow path; an input shaft extending through the ends coverings and the chamber, and being operatively connected to the rotational shaft of the door assembly; first and second pistons disks positioned inside the chamber and mounted about the input shaft, the pistons disks being connected to each other and being slidably movable along the input shaft; and a reciprocating assembly operatively connected between the input shaft and the piston disks and cooperating with the same for converting a rotation of the input shaft into a reciprocating movement of the pistons disks within a chamber, so that said reciprocating movement of the pistons disks inside the chamber causes in turn the fluid to travel along a reciprocating movement along the hydraulic flow path, said reciprocating movement of the fluid along the hydraulic flow path causing a damping effect of the rotation of the input shaft and thus controlling the rotation of the rotational shaft of the door assembly via a damping effect.

Abstract translation: 一种用于与门组件的旋转轴一起用于控制所述旋转轴的旋转的液压调速器装置。 该装置包括一个套筒; 第一和第二端盖分别安装在套筒的第一和第二端上，以便限定液压流路; 基本上填充液压流路的流体; 延伸穿过所述末端覆盖物和所述室的输入轴，并且可操作地连接到所述门组件的旋转轴; 第一和第二活塞盘定位在室内并围绕输入轴安装，活塞盘彼此连接并且可沿输入轴滑动; 以及可操作地连接在输入轴和活塞盘之间的往复式组件，并与之相配合，用于将输入轴的旋转转换成活塞盘在腔室内的往复运动，使得活塞盘的内部往复运动 流体依次沿着液压流路沿往复运动而流动，流体沿着液压流路的往复运动导致输入轴的旋转的阻尼效果，从而控制旋转轴的转动 门组件通过阻尼效应。

公开(公告)号：US20040103505A1

公开(公告)日：2004-06-03

申请号：US10391102

申请日：2003-03-17

Applicant: Canimex Inc.

Inventor： Richard Beaudoin ,  Peter Dow ,  Richard Tremblay

IPC: B42F001/00

CPC classification number: E05F11/54 ,  E05F15/684 ,  E05Y2900/106 ,  Y10T24/3902 ,  Y10T24/3904 ,  Y10T24/44487 ,  Y10T70/483 ,  Y10T70/491

Abstract: A chain keeper for retaining a chain operatively connected to a driving mechanism of a chain hoist system. The chain keeper has a support bracket and a pair of plates. The support bracket is mountable onto a fixed structure, and has a substantially vertical longitudinal axis, and opposite top and bottom sections. Each plate has top and bottom portions. The plates project from the support bracket and are slanted with respect to the longitudinal axis thereof. The plates converge towards one another towards the bottom section of the support bracket, a slot being defined between peripheral edges of the plates at the bottom section of the support bracket. The slot is shaped and sized to slidably and removably receive therein a segment of the chain for retaining the same from substantial vertical movement along the longitudinal axis of the support bracket.

Abstract translation: 用于保持链条可操作地连接到链式葫芦系统的驱动机构的链式保持器。 锁链器有支撑架和一对板。 支撑托架可安装在固定结构上，并且具有基本垂直的纵向轴线，以及相对的顶部和底部部分。 每个板具有顶部和底部。 板从支撑托架突出并且相对于其纵向轴线倾斜。 板朝着支撑托架的底部部分彼此会聚，在支撑托架的底部处限定了板的周边边缘之间的槽。 狭槽的形状和尺寸被设计成可滑动地和可拆卸地在其中容纳链条的一部分，用于将其沿着支撑支架的纵向轴线基本垂直移动。