A linkage lever for operating a rigid clutch and a band brake

Abstract

The utility model relates to a hoist technology field more specifically, and relates to a linkage control rod of rigid clutch and band brake. Including base, output shaft, rope cylinder, the rope cylinder is through bearing suit on output shaft, control part, control part includes linkage control rod, control rod support and control rod connecting pin, control rod support fixedly arranged on the base, linkage control rod is hinged with control rod support through control rod connecting pin, clutch part, clutch part sets up on output shaft, clutch part is connected with linkage control rod to realize the combination and the separation of power, brake part, brake part sets up on the rope cylinder, brake part is connected with linkage control rod to realize the brake and release. The separate clutch control rod and separate brake control rod are combined into one, which is convenient to operate and can avoid operation failure. The utility model mainly applies to the linkage control of clutch and band brake.

Description

Technical Field

[0001] This utility model relates to the field of hoisting machine technology, and more specifically, to a linkage control lever for a rigid clutch and a band brake. Background Technology

[0002] Chinese utility model patent CN100402404C discloses a portable hoist. To save resources and improve work efficiency during descent, it invented rigid clutches such as pin-type clutches and jaw clutches for use on the portable hoist. These clutches allow for the separation and engagement of the output shaft of the portable hoist with the rope drum on which the wire rope is wound. When lifting heavy objects, the clutch is engaged, and the motor drives the hoist upward; when descending, the clutch disengages, allowing the motor to rest.

[0003] When the clutch is disengaged, the load suspended by the wire rope falls at near-free-fall speed, significantly increasing safety hazards. Therefore, a manual band brake was subsequently installed on the rope drum. Operating the brake allows control of the descent speed, overcoming these safety risks. However, the clutch lever and brake lever are located in different positions, requiring precise timing and sometimes the use of both hands and feet. This is inconvenient and can potentially create new safety hazards due to operational errors. Utility Model Content

[0004] To overcome the shortcomings of the existing technology, this utility model provides a linkage control lever for a rigid clutch and a band brake. This device combines the originally separate clutch control lever and brake control lever into one linkage control lever, which is convenient to operate and avoids operational errors.

[0005] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A linkage control lever for a rigid clutch and a band brake includes a base, an output shaft, and a rope drum, which is mounted on the output shaft via a bearing. The control part includes a linkage control lever, a control lever support, and a control lever connecting pin. The control lever support is fixedly mounted on the base, and the linkage control lever is hinged to the control lever support through the control lever connecting pin. The clutch section is mounted on the output shaft and connected to the linkage control lever to achieve the engagement and disengagement of power. The brake section is mounted on the rope drum and connected to the linkage control lever to achieve braking and release.

[0006] The linkage control lever includes a control lever with an ear loop structure at the lower end. The control lever is hinged to the control lever support via a control lever connecting pin, and the hinge point has a gap that allows the linkage control lever to swing left and right. A foot-operated lever, wherein the foot-operated lever is disposed on the upper part of the control lever earring structure; A clutch lever is provided above the foot control lever. An elongated hole is provided in its plane in the same direction as the axis of the control lever. A shift fork rod passes through the elongated hole and can prevent hard interference between the linkage control lever and the shift fork rod when the brake is pulled back and forth. A brake pull lug is provided, which is positioned above the clutch actuation bracket; A hand-operated handle is located at the top of the joystick.

[0007] The axis of the foot-operated lever is coplanar with the thickness-thin symmetry plane of the lever lug structure; the thickness-thin symmetry plane of the clutch actuation frame is perpendicular to the thickness-thin symmetry plane of the lever lug structure; the thickness-thin symmetry plane of the brake pull lug is coplanar with the thickness-thin symmetry plane of the lever lug structure.

[0008] The clutch part includes: a coupling, which is fitted onto the output shaft via a spline clearance fit and has an annular groove on its outer contour; A follower, wherein the follower is disposed on the rope drum; A shift fork that acts on the annular groove of the connector; A shift fork handle, the rear end of which is fixedly connected to the shift fork; A shift fork lever, the rear end of which is threadedly connected to the front end of the shift fork handle; A shift fork holder, which is fixedly mounted on the bearing seat; A shift fork pin is provided, which passes through a pin hole in the middle of the shift fork frame and the shift fork handle, and hinges the shift fork handle to the U-shaped groove of the shift fork frame. The front end of the shift fork rod passes through the elongated hole of the clutch actuation frame and connects to it. When the linkage control lever operates the brake to pull back and forth, the shift fork rod does not disengage from the clutch actuation frame and does not interfere with the shift fork handle.

[0009] The shift fork holder has a U-shaped structure that appears L-shaped when viewed from above, in order to avoid interference with the shift fork when it is turned.

[0010] The brake component includes: A brake drum, wherein the brake drum is disposed on the outer edge of the rope drum; Brake band, the brake band is wrapped around the outside of the brake drum; Brake band support, the brake band support is fixedly mounted on the machine base; Brake band pin, the brake band pin is used to connect the rear end of the brake band to the brake band support, and to connect the front end of the brake band to the brake pull lug; A brake band tension spring, the front end of which is connected to the brake band, and the rear end of which is fixed to the machine base by a tension spring seat.

[0011] The brake band has a composite structure, consisting of an outer brake steel band and an inner brake asbestos band.

[0012] When the linkage control lever is not pulled by an external force, the brake band tension spring can automatically pull back the brake band, causing the brake band to separate from the brake drum and thus releasing the brake.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: By integrating the clutch and brake operating mechanisms onto a single linkage joystick, unified control of functions is achieved. Operators no longer need to switch between multiple joysticks, simplifying the operation process and significantly improving ease of use. The linkage joystick includes both hand and foot operating levers, supporting both hand and foot operation methods to adapt to different work scenarios and operating habits, providing a flexible and effortless operating experience. Through clever spatial layout design, the thickness symmetry plane of the clutch actuation frame is perpendicular to the symmetry plane of the brake pull lug. This structure achieves motion decoupling between left-right swing control of the clutch and forward-backward pull control of the brake, effectively avoiding mutual interference between operations and ensuring accurate transmission of control intentions. The brake section is equipped with a brake band tension spring with an automatic reset function. When the operating force is released, the brake band automatically relaxes under the action of the tension spring, releasing the brake and preventing prolonged braking or system jamming due to forgetfulness or delayed operation. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a top view of the clutch portion in this utility model; Figure 3 This is a front view of the linkage control lever in this utility model; Figure 4 This is a side view of the linkage control lever in this utility model; In the diagram: 1 is the base, 2 is the control lever support, 3 is the control lever connecting pin, 4 is the foot control lever, 5 is the shift fork lever, 6 is the clutch shift bracket, 7 is the shift fork handle, 8 is the brake band pull lug, 9 is the brake band pin, 10 is the control lever, 11 is the hand control handle, 12 is the brake steel band, 13 is the brake asbestos band, 14 is the spring hanger, 15 is the brake band tension spring, 16 is the reducer, 17 is the shift fork, 18 is the coupling, 19 is the driven component, 20 is the rope drum, 21 is the spring seat, 22 is the brake band support, 23 is the brake drum, 24 is the output shaft, 25 is the bearing seat, 26 is the shift fork bracket, and 27 is the shift fork pin. Detailed Implementation

[0015] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0016] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the scope of protection of the present invention is not limited to the specific embodiments disclosed below.

[0017] like Figures 1 to 4 As shown, a linkage control lever for a rigid clutch and a band brake includes a base 1, an output shaft 24, and a rope drum 20, which is mounted on the output shaft 24 via bearings. The control part includes a linkage control lever, a control lever support 2 and a control lever connecting pin 3. The control lever support 2 is fixedly mounted on the base 1, and the linkage control lever is hinged to the control lever support 2 through the control lever connecting pin 3. The clutch section is mounted on the output shaft 24 and is connected to the linkage control lever to achieve the engagement and disengagement of power. The brake is mounted on the rope drum 20 and is connected to the linkage control lever to achieve braking and release.

[0018] Preferably, the linkage control lever includes a control lever 10, the lower end of which is provided with an ear loop structure, and is hinged to the control lever support 2 via a control lever connecting pin 3, and the hinge is provided with a gap that allows the linkage control lever to swing left and right. Foot-operated lever 4 is located on the upper part of the ear loop structure of the control lever 10; Clutch shift bracket 6 is located above foot operating lever 4. A long hole in its plane is provided in the same direction as the axis of the operating lever (10). The shift fork rod (5) passes through the long hole and can prevent hard interference with the shift fork rod (5) when the linkage operating lever operates the brake back and forth. Brake pull ring 8 is located above clutch shift bracket 6; A hand-operated handle 11 is located at the top of the joystick 10.

[0019] Preferably, the axis of the foot-operated lever 4 is coplanar with the thickness-thin symmetry plane of the lever 10 earring structure; the thickness-thin symmetry plane of the clutch shifter 6 is perpendicular to the thickness-thin symmetry plane of the lever 10 earring structure; and the thickness-thin symmetry plane of the brake pull ear 8 is coplanar with the thickness-thin symmetry plane of the lever 10 earring structure.

[0020] Preferably, the clutch part includes: a coupling 18, which is fitted onto the output shaft 24 with a spline clearance fit, and has an annular groove on its outer contour; Follower 19 is provided on the rope drum 20; The shift fork 17 acts on the annular groove of the connector 18; The rear end of the shift fork handle 7 is fixedly connected to the shift fork 17. The rear end of the shift fork lever 5 is connected to the front end of the shift fork handle 7 by a thread; The shift fork holder 26 is fixedly mounted on the bearing seat 25. The shift fork pin 27 passes through the pin hole in the middle of the shift fork holder 26 and the shift fork handle 7, and hinges the shift fork handle 7 in the U-shaped groove of the shift fork holder 26. The front end of the shift fork 5 passes through the elongated hole of the clutch actuation frame 6 and is connected to it. When the linkage control lever pulls the brake back and forth, the shift fork 5 does not disengage from the clutch actuation frame 6 and does not interfere with the shift fork handle 7.

[0021] Preferably, the shift fork holder 26 has a U-shaped structure that is L-shaped when viewed from above, so as to avoid interference with the shift fork 17 when it is shifted.

[0022] Preferably, the brake portion includes: Brake drum 23 is located on the outer edge of rope drum 20; Brake band, the brake band is wrapped around the outside of brake drum 23; Brake band support 22 is fixedly mounted on machine base 1; Brake band pin 9 is used to connect the rear end of the brake band to the brake band support 22, and to connect the front end of the brake band to the brake pull lug 8. Brake band tension spring 15, the front end of which is connected to the brake band, and the rear end is fixed to the machine base 1 through tension spring seat 21.

[0023] Preferably, the brake band has a composite structure, comprising an outer brake steel band 12 and an inner brake asbestos band 13.

[0024] Preferably, when the linkage control lever is not pulled by an external force, the brake band tension spring 15 can automatically pull back the brake band, so that the brake band separates from the brake drum 23 and the brake is released.

[0025] It supports both hand and foot operation: In hand operation, the operator holds the hand control lever 11, pulling it back and forth to control the tightening and loosening of the brake, and moving it left and right to control the engagement and disengagement of the clutch. In foot operation, the operator presses the foot control lever 4; pressing down tightens the brake, and releasing the pressure releases it; moving the foot control lever 4 left and right engages and disengages the clutch. By integrating the clutch and brake control functions into a single linkage lever, ease of operation and safety are achieved, effectively avoiding safety hazards caused by improper operation.

[0026] The above description only details the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A linkage control lever for a rigid clutch and a band brake, characterized in that: Includes a base (1), an output shaft (24); and a rope drum (20), which is mounted on the output shaft (24) via a bearing. The control part includes a linkage control lever, a control lever support (2) and a control lever connecting pin (3). The control lever support (2) is fixedly mounted on the base (1), and the linkage control lever is hinged to the control lever support (2) through the control lever connecting pin (3). The clutch part is mounted on the output shaft (24) and is connected to the linkage control lever to realize the engagement and disengagement of power; The brake part is disposed on the rope drum (20) and is connected to the linkage control lever to realize braking and release; The linkage control lever includes a control lever (10), the lower end of the control lever (10) is provided with an ear ring structure, and is hinged to the control lever support (2) through the control lever connecting pin (3), and the hinge is provided with a gap that allows the linkage control lever to swing left and right; Foot operating lever (4), the foot operating lever (4) is located on the upper part of the earring structure of the control lever (10); Clutch shift bracket (6) is located above the foot operating lever (4). A long hole is provided in its plane in the same direction as the axis of the operating lever (10). The shift fork rod (5) passes through the long hole and can prevent hard interference with the shift fork rod (5) when the linkage operating lever operates the brake back and forth. Brake pull earring (8) is located above the clutch shift bracket (6); A hand-operated handle (11) is located on top of the joystick (10).

2. The linkage control lever for a rigid clutch and a band brake according to claim 1, characterized in that: The axis of the foot operating lever (4) is coplanar with the thickness symmetry plane of the lever (10) earring structure; the thickness symmetry plane of the clutch shifter (6) is perpendicular to the thickness symmetry plane of the lever (10) earring structure; the thickness symmetry plane of the brake pull earring (8) is coplanar with the thickness symmetry plane of the lever (10) earring structure.

3. The linkage control lever for a rigid clutch and a band brake according to claim 1, characterized in that: The clutch part includes: a coupling (18), which is fitted onto the output shaft (24) with a spline clearance fit and has an annular groove on its outer contour; Follower (19), said follower (19) is disposed on the rope drum (20); A fork (17) acts on the annular groove of the connector (18); The fork handle (7) is fixedly connected to the fork (17) at its rear end; The rear end of the shift fork lever (5) is connected to the front end of the shift fork handle (7) by a thread; A shift fork holder (26) is fixedly mounted on a bearing seat (25); The fork pin (27) passes through the pin hole in the middle of the fork frame (26) and the fork handle (7), and hinges the fork handle (7) in the U-shaped groove of the fork frame (26). The front end of the shift fork (5) passes through the elongated hole of the clutch shift bracket (6) and is connected to it. When the linkage control lever pulls the brake back and forth, the shift fork (5) does not disengage from the clutch shift bracket (6) and does not interfere with the shift fork handle (7).

4. The linkage control lever for a rigid clutch and a band brake according to claim 3, characterized in that: The shift fork holder (26) has a U-shaped structure that is L-shaped when viewed from above, so as to avoid interference with the shift fork (17) when it is turned.

5. The linkage control lever for a rigid clutch and a band brake according to claim 1, characterized in that: The brake component includes: Brake drum (23), said brake drum (23) is disposed on the outer edge of the rope drum (20); Brake band, the brake band is wrapped around the outside of the brake drum (23); Brake band support (22), the brake band support (22) is fixedly mounted on the machine base (1); Brake band pin (9), the brake band pin (9) is used to connect the rear end of the brake band to the brake band support (22), and to connect the front end of the brake band to the brake pull lug (8). Brake band tension spring (15), the front end of the brake band tension spring (15) is connected to the brake band, and the rear end is fixed to the machine base (1) through the tension spring seat (21).

6. The linkage control lever for a rigid clutch and a band brake according to claim 5, characterized in that: The brake band is a composite structure, comprising an outer brake steel band (12) and an inner brake asbestos band (13).

7. The linkage control lever for a rigid clutch and a band brake according to claim 5, characterized in that: When the linkage control lever is not pulled by an external force, the brake band tension spring (15) can automatically pull back the brake band, so that the brake band is separated from the brake drum (23) and the brake is released.

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