A snowplow transmission clutch assembly

Abstract

A snowplow transmission clutch assembly belongs to the field of snowplow technology. It utilizes spring pressure to engage friction blocks planarly, resulting in a large contact area, smooth engagement, and the ability to transmit significant torque. It also provides overload protection through friction slippage. A traction cable directly overcomes the spring force, quickly pulling the active friction block back for complete power separation and rapid response. The entire assembly is integrated between the fixed shaft and the input shaft, resulting in a compact structure. The single traction cable with a dual-branch layout ensures balanced force on the sliding shaft, smooth operation, and convenient control via a remote cable. The friction blocks are connected via dovetail grooves, facilitating easy replacement after wear and reducing maintenance costs and time.

Description

Technical Field

[0001] This utility model belongs to the field of snowplow technology, specifically relating to a snowplow transmission clutch assembly. Background Technology

[0002] Snowplows typically use an engine driven by a belt drive system for their auger or snow-throwing rotor. During operation, when encountering excessive loads (such as hard snow, ice, or debris), a rapid power cut-off is necessary to prevent damage to transmission components. Furthermore, in situations where snow throwing is temporarily stopped but the engine still needs to run, the working parts must be easily disengaged from power. Existing clutch mechanisms suffer from incomplete disengagement, unstable engagement, or complex structures and inconvenient maintenance. Therefore, a clutch assembly that is responsive, reliable, compact, and easy to control is required. Summary of the Invention

[0003] The present invention aims to solve the technical problems existing in the prior art and provide a snow sweeper transmission clutch assembly.

[0004] The above-mentioned technical problems of this utility model are mainly solved by the following technical solution: a snow sweeper transmission clutch assembly, including a fixed shaft and an input shaft, a clutch assembly is provided between the fixed shaft and the input shaft, the clutch assembly includes an active friction block, a passive friction block, a sliding shaft, a traction cable and a rotating pulley, the passive friction block is disposed on the input shaft, the sliding shaft passes through the end of the fixed shaft and is slidably connected to it, the rotating pulley is rotatably connected to the end of the sliding shaft, and the active friction block is disposed on the rotating pulley.

[0005] Preferably, the input shaft and the end of the rotating pulley are both provided with dovetail grooves, and the active friction block and the passive friction block are both connected to the ends of the input shaft and the rotating pulley through the dovetail grooves.

[0006] Preferably, a retaining ring is provided at the middle position of the sliding shaft, and a first pin is provided on each of the left and right sides of the retaining ring. A spring is provided between the retaining ring and the fixed shaft, and the spring is also sleeved on the sliding shaft to press the active friction block onto the passive friction block.

[0007] Preferably, a second pin is provided on each of the left and right sides of the fixed shaft, and a threading seat is provided on the top of the fixed shaft. The traction cable includes a traction end and two connecting ends. The two connecting ends are led out from the threading seat and pass around the two second pins to be fixedly connected to the two first pins.

[0008] Preferably, a limiting groove and a limiting block that cooperate with each other are provided between the fixed shaft and the sliding shaft.

[0009] The beneficial effects of this utility model are: the friction block planes are joined by spring pressure, the contact area is large, the joining process is stable, a large torque can be transmitted, and a certain overload protection can be achieved through friction slippage.

[0010] The spring force can be directly overcome by the traction cable, and the active friction block can be quickly pulled back, achieving complete separation of power and fast response speed;

[0011] The entire component is integrated between the fixed shaft and the input shaft, resulting in a compact structure. The single traction cable with a dual-branch layout ensures balanced force on the sliding shaft, smooth operation, and convenient control via remote cable connection.

[0012] The friction blocks are connected by dovetail grooves, making them easy to replace after wear, thus reducing maintenance costs and time. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the fixed shaft and sliding shaft of this utility model.

[0015] In the diagram: 1. Fixed shaft; 11. Second pin; 12. Cable guide; 13. Limiting groove; 14. Limiting block; 2. Input shaft; 21. Dovetail groove; 3. Clutch assembly; 31. Active friction block; 32. Passive friction block; 33. Sliding shaft; 331. Retaining ring; 332. First pin; 34. Traction cable; 341. Traction end; 342. Connecting end; 35. Rotating pulley; 4. Spring. Detailed Implementation

[0016] The technical solution of this utility model will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0017] Example: A snowplow transmission clutch assembly, such as Figures 1-2 As shown, the device includes a fixed shaft 1 and an input shaft 2. A clutch assembly 3 is provided between the fixed shaft 1 and the input shaft 2. The clutch assembly 3 includes an active friction block 31, a passive friction block 32, a sliding shaft 33, a traction cable 34, and a rotating pulley 35. The passive friction block 32 is disposed on the input shaft 2. The sliding shaft 33 passes through the end of the fixed shaft 1 and is slidably connected to it. The rotating pulley 35 is rotatably connected to the end of the sliding shaft 33. The active friction block 31 is disposed on the rotating pulley 35.

[0018] The input shaft 2 and the rotating pulley 35 are both provided with dovetail grooves 21 at their respective ends. The active friction block 31 and the passive friction block 32 are both connected to the ends of the input shaft 2 and the rotating pulley 35 through the dovetail grooves 21.

[0019] A retaining ring 331 is provided at the middle position of the sliding shaft 33. A first pin 332 is provided on each of the left and right sides of the retaining ring 331. A spring 4 is provided between the retaining ring 331 and the fixed shaft 1. The spring 4 is also sleeved on the sliding shaft 33, pressing the active friction block 31 onto the passive friction block 32.

[0020] The fixed shaft 1 has a second pin 11 on each of its left and right sides, and a threading seat 12 is provided on the top of the fixed shaft 1. The traction cable 34 includes a traction end 341 and two connecting ends 342. The two connecting ends 342 are led out from the threading seat 12 and pass around the two second pins 11 to be fixedly connected to the two first pins 332.

[0021] The fixed shaft 1 and the sliding shaft 33 are provided with a mutually cooperating limiting groove 13 and a limiting block 14.

[0022] The principle of this invention: In implementation, power is transmitted from the engine to the rotating pulley 35 via a belt. Under normal circumstances, the preload of the spring 4 pushes the sliding shaft 33, its rotating pulley 35, and the active friction block 31 to the left, pressing them tightly against the passive friction block 32 fixed to the input shaft 2. Relying on friction, power is transmitted from the rotating pulley 35 through the active friction block 31 and the passive friction block 32 to the input shaft 2, ultimately driving the working parts of the snow sweeper (such as the auger) to rotate.

[0023] When power needs to be disconnected, the operator pulls the traction end 341 of the traction cable 34 via a control mechanism (such as a handle). The pulling force is transmitted through two connecting ends 342, which, after passing around the second pin 11, pull the first pin 332. The first pin 332 drives the sliding shaft 33 to move to the right against the elastic force of the spring 4, causing the active friction block 31 to separate from the passive friction block 32, thereby cutting off the power transmission. During this process, the cooperation between the limiting groove 13 and the limiting block 14 prevents the sliding shaft 33 from rotating, ensuring that it only slides axially, making the separation action accurate and reliable.

[0024] When the traction cable 34 is released, the components reset under the restoring force of the spring 4, and the clutch re-engages. The friction block is installed through the dovetail groove 21, allowing for easy replacement when wear affects performance.

[0025] Finally, it should be noted that the above embodiments are merely representative examples of this utility model. Obviously, this utility model is not limited to the above embodiments and can have many variations. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model should be considered to fall within the protection scope of this utility model.

Claims

1. A snow thrower transmission clutch assembly comprising a stationary shaft (1) and an input shaft (2), characterized in that: A clutch assembly (3) is provided between the fixed shaft (1) and the input shaft (2). The clutch assembly (3) includes an active friction block (31), a passive friction block (32), a sliding shaft (33), a traction cable (34), and a rotating pulley (35). The passive friction block (32) is located on the input shaft (2). The sliding shaft (33) passes through the end of the fixed shaft (1) and is slidably connected to it. The rotating pulley (35) is rotatably connected to the end of the sliding shaft (33). The active friction block (31) is located on the rotating pulley (35).

2. A snow thrower transmission clutch assembly as claimed in claim 1, wherein: The input shaft (2) and the rotating pulley (35) are both provided with dovetail grooves (21) at their ends. The active friction block (31) and the passive friction block (32) are both connected to the ends of the input shaft (2) and the rotating pulley (35) through the dovetail grooves (21).

3. A snow thrower transmission clutch assembly as set forth in claim 1 wherein: A retaining ring (331) is provided in the middle of the sliding shaft (33). A first pin (332) is provided on each of the left and right sides of the retaining ring (331). A spring (4) is provided between the retaining ring (331) and the fixed shaft (1). The spring (4) is also sleeved on the sliding shaft (33) to press the active friction block (31) onto the passive friction block (32).

4. A snow thrower transmission clutch assembly as set forth in claim 1 wherein: The fixed shaft (1) has a second pin (11) on each of its left and right sides, and a threading seat (12) is provided on the top of the fixed shaft (1). The traction cable (34) includes a traction end (341) and two connecting ends (342). The two connecting ends (342) are led out from the threading seat (12) and pass around the two second pins (11) to be fixedly connected to the two first pins (332).

5. A snow thrower transmission clutch assembly as set forth in claim 1 wherein: The fixed shaft (1) and the sliding shaft (33) are provided with a mutually cooperating limiting groove (13) and a limiting block (14).

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