Hydraulic clamping pilot valve handle for bulldozer

Abstract

The utility model provides a hydraulic clamping pilot valve handle for a bulldozer, and relates to the technical field of bulldozer handles, the hydraulic clamping pilot valve handle comprises a pilot valve body, a universal joint, a pressure plate and a connecting rod, the outer wall of the connecting rod is uniformly provided with limiting holes, the outer wall of the connecting rod is slidably connected with an extension sleeve, and the top end of the extension sleeve is fixedly provided with a connecting ball; and an inserting hole is formed in the outer wall of the bottom end of the extending sleeve in a penetrating mode, a U-shaped frame is fixedly installed on the outer wall of the bottom end of the extending sleeve, and a limiting rod is slidably connected into the U-shaped frame. Through cooperation of the connecting rod, the limiting hole, the extension sleeve, the insertion hole, the U-shaped frame, the limiting rod, the fixing block, the spring, the pull handle, the positioning strip, the positioning groove and other structures, the length of the handle can be conveniently adjusted, operators with different figures can adjust the handle to the proper length according to the requirements of the operators, the operation comfort is improved, and the practicability is high. The problem that the length of the handle is fixed, so that the use habits of different operators and the operation requirements under different working conditions cannot be met is effectively avoided.

Description

Technical Field

[0001] This utility model relates to the field of bulldozer handle technology, and in particular to a hydraulic locking pilot valve handle for bulldozers. Background Technology

[0002] With the rapid development of the construction industry, bulldozers play a crucial role in various earthmoving projects, and their operating efficiency and performance directly affect the project's progress and quality. The hydraulic locking pilot valve handle, as a core component of the bulldozer's control system, plays a decisive role in the machine's control precision and operational comfort.

[0003] Currently, the traditional hydraulic locking pilot valve handle for bulldozers has many limitations in actual use. The handle length is fixed, which cannot meet the usage habits of different operators and the operational needs under different working conditions. When operators have different body sizes or in complex working environments with limited space, the fixed length handle may cause inconvenience or even affect work efficiency. Therefore, it needs to be improved. Utility Model Content

[0004] The purpose of this utility model is to solve the problems mentioned in the background art and to propose a hydraulic locking pilot valve handle for bulldozers.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulic locking pilot valve handle for a bulldozer, comprising a pilot valve body, a universal joint, a pressure plate, and a connecting rod. Limiting holes are evenly distributed on the outer wall of the connecting rod. An extension sleeve is slidably connected to the outer wall of the connecting rod. A connecting ball is fixedly installed at the top of the extension sleeve. An insertion hole is provided through the bottom outer wall of the extension sleeve. A U-shaped frame is fixedly installed on the bottom outer wall of the extension sleeve. A limiting rod is slidably connected inside the U-shaped frame. A fixing block is fixedly installed on the outer wall of the limiting rod. A spring is sleeved on the outer wall of the limiting rod. A handle is fixedly installed at the end of the limiting rod away from the U-shaped frame.

[0006] Preferably, the pilot valve body is connected to the pressure plate via a universal joint, the connecting rod is located on top of the pressure plate, and the connecting rod is fixedly connected to the pressure plate.

[0007] Preferably, a dustproof component is installed on the top of the pilot valve body, and the limiting rod is slidably connected to the limiting hole and the insertion hole.

[0008] Preferably, the outer wall of the connecting rod is provided with a positioning groove, and the inner wall of the extension sleeve is fixedly installed with a positioning strip, and the positioning strip is slidably connected to the positioning groove.

[0009] Preferably, one end of the spring is fixedly connected to the fixing block, and the other end of the spring is fixedly connected to the U-shaped frame.

[0010] Preferably, anti-slip rings are uniformly and fixedly installed on the outer wall of the extension sleeve, and anti-slip strips are uniformly and fixedly installed on the outer wall of the extension sleeve, with the anti-slip strips and anti-slip rings being fixedly connected.

[0011] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0012] 1. In this utility model, the handle length can be easily adjusted by the cooperation of structures such as connecting rod, limiting hole, extension sleeve, insertion hole, U-shaped frame, limiting rod, fixing block, spring, pull handle, positioning strip and positioning groove. Operators of different heights can adjust the handle to a suitable length according to their own needs, improve the comfort of operation, and effectively avoid the inability to meet the usage habits of different operators and the operation needs under different working conditions due to the fixed handle length.

[0013] 2. In this utility model, the anti-slip strip and anti-slip ring significantly increase the friction between the hand and the extension sleeve by increasing the roughness of the extension sleeve surface. Even under harsh operating conditions, the operator can firmly grip the extension sleeve, effectively avoiding operational errors caused by hand slippage, and ensuring work safety and efficiency. Attached Figure Description

[0014] Figure 1 This utility model provides an overall structural schematic diagram of a hydraulic locking pilot valve handle for bulldozers;

[0015] Figure 2 This utility model provides a side-view exploded structural diagram of a hydraulic locking pilot valve handle for a bulldozer.

[0016] Figure 3 This utility model provides an exploded view of the hydraulic locking pilot valve handle for a bulldozer.

[0017] Figure 4 This utility model proposes a hydraulic locking pilot valve handle for bulldozers. Figure 3 Enlarged view of point A in the middle.

[0018] Legend: 1. Pilot valve body; 2. Universal joint; 3. Pressure plate; 4. Connecting rod; 5. Limiting hole; 6. Extension sleeve; 7. Connecting ball; 8. Insertion hole; 9. U-shaped bracket; 10. Limiting rod; 11. Fixing block; 12. Spring; 13. Pull handle; 14. Positioning strip; 15. Positioning groove; 16. Dustproof component; 17. Anti-slip ring; 18. Anti-slip strip. Detailed Implementation

[0019] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0020] 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 present invention is not limited to the specific embodiments disclosed in the following specification.

[0021] Example 1: As Figures 1-4 As shown, this utility model provides a technical solution: a hydraulic locking pilot valve handle for a bulldozer, including a pilot valve body 1, a universal joint 2, a pressure plate 3, and a connecting rod 4. Limiting holes 5 are evenly distributed on the outer wall of the connecting rod 4. An extension sleeve 6 is slidably connected to the outer wall of the connecting rod 4. A connecting ball 7 is fixedly installed at the top of the extension sleeve 6. An insertion hole 8 is penetratingly opened on the bottom outer wall of the extension sleeve 6. A U-shaped frame 9 is fixedly installed on the bottom outer wall of the extension sleeve 6. A limiting rod 10 is slidably connected inside the U-shaped frame 9. A fixing block 11 is fixedly installed on the outer wall of the limiting rod 10. A spring 12 is sleeved on the outer wall of the limiting rod 10. A handle 13 is fixedly installed at the end of the pilot valve body 1 away from the U-shaped frame 9. The pilot valve body 1 and the pressure plate 3 are connected by a universal joint 2. The connecting rod 4 is located on the top of the pressure plate 3 and is fixedly connected to the pressure plate 3. A dustproof part 16 is installed on the top of the pilot valve body 1. The limit rod 10 is slidably connected to the limit hole 5 and the insertion hole 8. A positioning groove 15 is opened on the outer wall of the connecting rod 4. A positioning strip 14 is fixedly installed on the inner wall of the extension sleeve 6 and is slidably connected to the positioning groove 15. One end of the spring 12 is fixedly connected to the fixing block 11, and the other end of the spring 12 is fixedly connected to the U-shaped frame 9.

[0022] In this embodiment, the combination of the connecting rod 4, limiting hole 5, extension sleeve 6, insertion hole 8, U-shaped frame 9, limiting rod 10, fixing block 11, spring 12, pull handle 13, positioning strip 14 and positioning groove 15 allows for convenient adjustment of the handle length. Operators of different heights can adjust the handle to a suitable length according to their own needs, improving the comfort of operation and effectively avoiding the inability to meet the usage habits and operational needs of different operators under different working conditions due to a fixed handle length.

[0023] Example 2: As Figure 4 As shown, anti-slip rings 17 are uniformly fixedly installed on the outer wall of the extension sleeve 6, and anti-slip strips 18 are uniformly fixedly installed on the outer wall of the extension sleeve 6. The anti-slip strips 18 and anti-slip rings 17 are fixedly connected.

[0024] In this embodiment, the anti-slip strip 18 and anti-slip ring 17 significantly increase the friction between the hand and the extension sleeve 6 by increasing the roughness of the surface of the extension sleeve 6. Even under harsh operating conditions, the operator can firmly grip the extension sleeve 6, effectively avoiding operational errors caused by hand slippage, and ensuring work safety and efficiency.

[0025] The working principle of this embodiment is as follows: When it is necessary to adjust the handle length to suit the usage habits of different operators or different working conditions, the operator pulls the limiting rod 10 outward through the handle 13. At this time, the spring 12 is compressed by the fixing block 11, and the limiting rod 10 is pulled out from the limiting hole 5 of the connecting rod 4. The fixed state between the extension sleeve 6 and the connecting rod 4 is released. Since the positioning groove 15 on the outer wall of the connecting rod 4 is slidably connected to the positioning strip 14 on the inner wall of the extension sleeve 6, the extension sleeve 6 can slide along the axial direction of the connecting rod 4, thereby realizing the adjustment of the handle length. After adjusting to the appropriate length, the handle 13 is released, the spring 12 returns to its original state, and the fixing block 11 is pushed so that the limiting rod 10 is inserted into the corresponding limiting hole 5 and passes through the insertion hole 8 at the bottom of the extension sleeve 6, thus re-fixing the extension sleeve 6 and the connecting rod 4 and completing the adjustment of the handle length. During use, the operator holds the anti-slip ring 17 and anti-slip strip 18 on the extension sleeve 6, applying force to the connecting ball 7 to move the extension sleeve 6 and connecting rod 4. Since the connecting rod 4 is fixedly connected to the pressure plate 3, and the pilot valve body 1 is connected to the pressure plate 3 through the universal joint 2, the movement of the connecting rod 4 is transmitted to the pilot valve body 1 through the pressure plate 3 and the universal joint 2, thereby controlling the opening, closing, and opening degree of the pilot valve body 1, and realizing the control of the bulldozer's hydraulic system. The dustproof component 16 installed on the top of the pilot valve body 1 can effectively prevent dust, debris, etc. from entering the interior of the pilot valve body 1, reducing wear caused by dust accumulation on the internal components of the pilot valve body 1, ensuring the normal operation of the pilot valve body 1, and extending its service life.

[0026] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A hydraulic locking pilot valve handle for a bulldozer, comprising a pilot valve body (1), a universal joint (2), a pressure plate (3), and a connecting rod (4), characterized in that: Limiting holes (5) are evenly provided on the outer wall of the connecting rod (4). An extension sleeve (6) is slidably connected to the outer wall of the connecting rod (4). A connecting ball (7) is fixedly installed at the top of the extension sleeve (6). An insertion hole (8) is provided through the bottom outer wall of the extension sleeve (6). A U-shaped frame (9) is fixedly installed on the bottom outer wall of the extension sleeve (6). A limiting rod (10) is slidably connected inside the U-shaped frame (9). A fixing block (11) is fixedly installed on the outer wall of the limiting rod (10). A spring (12) is sleeved on the outer wall of the limiting rod (10). A handle (13) is fixedly installed at the end of the limiting rod (10) away from the U-shaped frame (9).

2. The hydraulic locking pilot valve handle for bulldozers according to claim 1, characterized in that: The pilot valve body (1) is connected to the pressure plate (3) by a universal joint (2), the connecting rod (4) is located on the top of the pressure plate (3), and the connecting rod (4) is fixedly connected to the pressure plate (3).

3. The hydraulic locking pilot valve handle for bulldozers according to claim 1, characterized in that: The top of the pilot valve body (1) is equipped with a dustproof component (16), and the limiting rod (10) is slidably connected to the limiting hole (5) and the insertion hole (8).

4. The hydraulic locking pilot valve handle for bulldozers according to claim 1, characterized in that: The outer wall of the connecting rod (4) is provided with a positioning groove (15), and the inner wall of the extension sleeve (6) is fixedly installed with a positioning strip (14), and the positioning strip (14) and the positioning groove (15) are slidably connected.

5. The hydraulic locking pilot valve handle for bulldozers according to claim 1, characterized in that: One end of the spring (12) is fixedly connected to the fixing block (11), and the other end of the spring (12) is fixedly connected to the U-shaped frame (9).

6. The hydraulic locking pilot valve handle for bulldozers according to claim 1, characterized in that: Anti-slip rings (17) are uniformly fixedly installed on the outer wall of the extension sleeve (6), and anti-slip strips (18) are uniformly fixedly installed on the outer wall of the extension sleeve (6). The anti-slip strips (18) and anti-slip rings (17) are fixedly connected.

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