Spring cylinder pushing device

Abstract

The utility model relates to the technical field of agricultural mechanical equipment, in particular to a spring push cylinder device which comprises a push rod, a push cylinder and a spring, a guide hole is formed in the push cylinder, a limiting sliding groove is formed in the cylinder wall of the push cylinder in the length direction of the guide hole, a limiting piece is arranged on the push rod, one end of the push rod extends into the guide hole, and the limiting piece extends into the limiting sliding groove. The push rod moves within the range limited by the limiting sliding groove along the guide hole, the limiting guide cylinder is sleeved with the spring, and the two ends of the spring are matched with a first blocking piece on the push rod and a second blocking piece on the push cylinder respectively; when the spring push cylinder device is used in the booster clutch pedal assembly, the pedal is in an original state, the spring push cylinder is shortened, the spring is compressed and the elastic force of the spring is stored under the action of the first stop piece and the second stop piece, and when the pedal is treaded, the spring push cylinder is extended under the action of the elastic force, so that a booster effect is achieved when a driver treads the pedal.

Description

TECHNICAL FIELD

[0001] The utility model relates to agricultural machinery equipment technical field, concretely relates to a spring push cylinder device. BACKGROUND

[0002] Tractors and engineering machinery, clutch generally adopts dry type friction plate formula, due to the power is bigger, clutch pedal separation is more heavy, long-term operation driver's work load is very big.

[0003] The applicant submitted an invention patent application named "a track type air-assisted force clutch pedal assembly" (application number 202410419910.7) on April 9, 2024, which effectively solves the technical problem. Please refer to Figure 5 In the invention patent application, the track plate A2 is provided with a power-assisted track surface, the track plate A2 is fixedly arranged on the pedal mounting seat, the foot pedal assembly A3 is hingedly connected with the pedal mounting seat, the foot pedal assembly A3 is provided with a power-assisted shift fork, one end of the elastic power-assisted assembly A4 is hingedly connected with the pedal mounting seat, and the other end is abutted on the power-assisted track surface of the track plate A2, and is movably connected with the power-assisted shift fork of the foot pedal assembly A3. When the clutch pedal is stepped on, the end portion movably connected with the foot pedal assembly A3 of the elastic power-assisted assembly A4 moves along the power-assisted track surface of the track plate A2, the stepping power provided by the elastic power-assisted assembly A4 is controlled by the power-assisted track surface, and the stepping power provided by the power-assisted shift fork of the foot pedal assembly A3 changes with the working characteristic curve when the clutch is separated. Not only is the stepping force of the clutch pedal significantly reduced, but also the stepping force of the clutch pedal is consistent with the working curve when the clutch is separated.

[0004] In the patent application, the elastic power-assisted assembly A4 adopts the form of gas spring, and the gas spring structure is complex, difficult to maintain, and relatively high in cost. In view of this, a spring push cylinder device with relatively simple structure and lower cost is provided, which is suitable for track type power-assisted clutch pedal assembly. CONTENT OF THE UTILITY MODEL

[0005] The utility model solves the technical problem to provide a spring push cylinder device, which has the advantages of simple structure, easy maintenance and lower cost.

[0006] To solve the above technical problems, the utility model adopts the technical scheme: a spring push cylinder device, including push rod, push cylinder and spring, push cylinder is provided with guide hole, push cylinder wall is provided with limit sliding slot along the length direction of guide hole, one end of push rod is inserted into guide hole and push rod moves along guide hole relative to push cylinder, push rod is provided with first stop piece and power assisting connecting part outside guide hole, push rod is provided with limit piece in the position inside guide hole, limit piece is inserted into limit sliding slot and cooperates with limit sliding slot and restricts the movement range of push rod, the outside of push cylinder is provided with second stop piece, spring is sleeved on the outside of push cylinder, and the both ends of spring cooperate with first stop piece and second stop piece respectively, and push cylinder is provided with mounting connecting part. Push rod can move along the guide hole in push cylinder to realize the telescopic change of spring push cylinder device, spring is sleeved on the outside of push cylinder and cooperates with first stop piece on push rod and second stop piece on push cylinder, when spring push cylinder device is pressed, spring is compressed to store elastic force, spring push cylinder device can be elongated under the action of spring after spring push cylinder device is released, compared with gas spring, the structure is simple and the cost is lower.

[0007] As an optional technical scheme of the utility model, the second stop piece can move along the axial direction of the push cylinder for adjustment. The movement of the second stop piece can adjust the pre-stored elastic force of the spring.

[0008] As an optional technical scheme of the utility model, the second stop piece includes an annular baffle, and the second stop piece is sleeved on the outside of the push cylinder and is threadedly connected with the outer wall of the push cylinder. Rotating the second stop piece can move the second stop piece along the push cylinder, facilitating operation.

[0009] As an optional technical scheme of the utility model, the limit piece is a limit pin, and the push rod is provided with a pin hole at the position inside the guide hole, and the limit pin is arranged through the pin hole. The limit piece is in the form of a limit pin, facilitating disassembly and assembly of the limit pin and the push rod.

[0010] As an optional technical scheme of the utility model, the push cylinder wall is provided, in a circumferential direction, with two limit sliding slots, and the limit pin is arranged through the two limit sliding slots.

[0011] As an optional technical scheme of the utility model, the power assisting connecting accessory is further included, and the power assisting connecting part is connected with the power assisting connecting accessory.

[0012] Compared with the prior art, the utility model has the beneficial effects that: 1. The spring push cylinder device is simple in structure, and the components are detachable and easy to detach, thereby facilitating maintenance and repair; 2. The second stop piece can move along the axial direction of the push cylinder for adjustment, thereby facilitating adjustment of the size of the pre-stored elastic force of the spring and facilitating adjustment according to the actual use environment; 3. The components such as the spring, the push rod, the push cylinder, and the limit pin can all be standard components, thereby facilitating reduction of the overall cost of the spring push cylinder device. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or prior art description will be briefly introduced as follows. Obviously, the drawings in the following description only represent some of the embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0014] Figure 1 It is a structural schematic diagram of spring push cylinder device;

[0015] Figure 2 It is a sectional view of spring push cylinder device when omitting the power-assisted connecting component;

[0016] Figure 3 It is a schematic diagram of push rod and push cylinder cooperation in shortening state;

[0017] Figure 4 It is a schematic diagram of push rod and push cylinder cooperation in elongation state;

[0018] Figure 5 It is a structural schematic diagram of a track type air-assisted force clutch pedal assembly;

[0019] In the figure: 1, push rod, 11, first stop piece, 12, power-assisted connecting part, 13, limiting piece, 2, push cylinder, 21, limiting sliding groove, 22, second stop piece, 23, mounting connecting part, 3, spring, 4, power-assisted connecting accessory. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present application will be described clearly and completely in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments only represent some of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application. EMBODIMENT

[0021] Please refer to Figures 1-4A spring pushing cylinder device, comprising a pushing rod 1, a pushing cylinder 2 and a spring 3, the pushing cylinder 2 is provided with a guide hole, a limiting sliding groove 21 is arranged on the cylinder wall of the pushing cylinder 2, the limiting sliding groove 21 is a long strip-shaped slot hole arranged along the length direction of the guide hole. One end of the pushing rod 1 extends into the guide hole, the pushing rod 1 can move along the guide hole, a limiting piece 13 is arranged on the pushing rod 1 at the position in the guide hole, the limiting piece 13 extends into the limiting sliding groove 21, the limiting piece 13 cooperates with the limiting sliding groove 21 to limit the movement range of the pushing rod 1 relative to the pushing cylinder 2. The limiting sliding groove 21 is preferably two and is uniformly distributed on the outer wall of the pushing cylinder 2 in the circumferential direction, the limiting piece 13 is preferably a limiting pin, the limiting pin is detachably arranged in the pin hole prearranged on the pushing rod 1, both ends of the limiting pin extend out of the pin hole and are arranged through the two limiting sliding grooves 21 respectively.

[0022] A first stop piece 11 is arranged on the pushing rod 1 at the position outside the guide hole, a second stop piece 22 is arranged outside the pushing cylinder 2, the spring 3 is sleeved outside the pushing cylinder 2, both ends of the spring 3 cooperate with the first stop piece 11 and the second stop piece 22 respectively. As shown in Figure 3 , the pushing rod 1 moves into the guide hole at most to the position where the limiting piece 13 abuts against one end of the limiting sliding groove 21, at this time, both ends of the spring 3 abut against the first stop piece 11 and the second stop piece 22 respectively, under the action of the first stop piece 11 and the second stop piece 22, the spring 3 is in a compressed state, the elastic force of the spring 3 is stored up; as shown in Figure 4 , the pushing rod 1 moves out of the guide hole at most to the position where the limiting piece 13 abuts against the other end of the limiting sliding groove 21, at this time, the state of the spring 3 is not limited.

[0023] A power assisting connecting part 12 is arranged on the pushing rod 1 at the position outside the guide hole, the power assisting connecting part 12 is used for connecting with a power assisting connecting accessory 4, the structure form of the power assisting connecting part 12 and the power assisting connecting accessory 4 please refer to Figure 1 or the invention patent application “a track type air auxiliary force clutch pedal assembly (application number 202410419910.7)”, which will not be described here. An installation connecting part 23 is arranged on the pushing cylinder 2, the installation connecting part 23 is a hinged connecting part suitable for hinged connection with a pedal mounting seat.

[0024] Please refer to Figure 1 and Figure 5When the spring push cylinder device of the embodiment is used in a track type auxiliary force clutch pedal assembly, in the original state, the elastic auxiliary force accessory cooperates with the track plate, the spring 3 of the spring push cylinder device is compressed, at this time, the spring 3 stores a large elastic force, when the driver steps on the pedal, the elastic auxiliary force accessory moves along the track plate, the spring push cylinder device is gradually released, under the action of the spring 3, the push rod 1 gradually moves out of the guide hole, the elastic auxiliary force accessory transmits the elastic force of the spring 3 to the pedal, reduces the stepping force of the driver, and until the separation of the clutch is completed; when the driver reduces the stepping force, the clutch inside the disc spring drives the clutch to be combined, the clutch combination force drives the pedal to return, the elastic auxiliary force accessory moves along the track plate so that the spring push cylinder device is gradually compressed, the push rod 1 moves into the guide hole so that the spring 3 is compressed, the elastic force of the spring 3 is stored and prepares for the next repeated action.

[0025] In an optional embodiment, the second stop piece 22 can be adjusted to move along the axial direction of the push cylinder 2, so as to realize the adjustment of the pre-stored elastic force of the spring 3. Specifically, the second stop piece 22 comprises an annular stop plate, the outer diameter of the annular stop plate is greater than the outer diameter of the spring 3, the second stop piece 22 is sleeved on the outside of the push cylinder 2, and is threadedly connected with the outer wall of the push cylinder 2, and rotating the second stop piece 22 can make the second stop piece 22 move along the axial direction of the push cylinder 2.

[0026] Of course, in a further embodiment or another optional embodiment, the first stop piece 11 can be adjusted to move along the axial direction of the push rod 1.

[0027] In the description of the specification, the description of the terms "one embodiment", "example", "specific example" and the like means that the specific features, structures, materials or characteristics described in combination with the embodiment or example are contained in at least one embodiment or example of the utility model. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0028] The above is only the preferred specific implementation of the utility model, but the protection scope of the utility model is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the utility model concept of the utility model within the technical range disclosed by the utility model, which should be covered in the protection scope of the utility model.

Claims

1. A spring pusher device, characterized in that: The device includes a push rod (1), a push cylinder (2), and a spring (3). The push cylinder (2) has a guide hole. A limiting groove (21) is provided on the cylinder wall of the push cylinder (2) along the length direction of the guide hole. One end of the push rod (1) extends into the guide hole and the push rod (1) moves relative to the push cylinder (2) along the guide hole. A first stop (11) and an assist connection part (12) are provided on the push rod (1) outside the guide hole. A limiting part (13) is provided on the push rod (1) at the position inside the guide hole. The limiting part (13) extends into the limiting groove (21) and cooperates with the limiting groove (21) to limit the movement range of the push rod (1). A second stop (22) is provided on the outside of the push cylinder (2). The spring (3) is sleeved on the outside of the push cylinder (2), and the two ends of the spring (3) cooperate with the first stop (11) and the second stop (22) respectively. An installation connection part (23) is provided on the push cylinder (2).

2. The spring pusher device according to claim 1, characterized in that: The second stop (22) can be adjusted by moving along the axial direction of the push cylinder (2).

3. The spring pusher device according to claim 2, characterized in that: The second stop (22) includes an annular baffle. The second stop (22) is sleeved on the outside of the push cylinder (2) and threadedly connected to the outer wall of the push cylinder (2).

4. The spring pusher device according to claim 2, characterized in that: The limiting component (13) is a limiting pin. The push rod (1) has a pin hole in the position inside the guide hole, and the limiting pin passes through the pin hole.

5. The spring pusher device according to claim 4, characterized in that: Two limiting grooves (21) are provided on the circumferential distribution of the cylinder wall of the push cylinder (2), and the limiting pin is set through the two limiting grooves (21).

6. A spring pusher device according to any one of claims 2-5, characterized in that: It also includes a power-assisted connection accessory (4), and the power-assisted connection part (12) is connected to the power-assisted connection accessory (4).

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