A control mechanism for a hydraulic multi-way valve

Abstract

The present invention discloses a control mechanism of a hydraulic multi-way valve, comprising a bulldozer control handle, a push-pull flexible shaft, and a lower transmission shaft, an upper transmission shaft, a multi-way valve bulldozer connection, a multi-way valve crushing connection, a multi-way valve deflection connection, a left pedal assembly, and a right pedal assembly integrated together through a chassis. In specific use, the valve cores of the multi-way valve crushing connection and the multi-way valve deflection connection can be opened to the left and right respectively by operating the left pedal assembly and the right pedal assembly, and the valve core of the multi-way valve bulldozer connection can be opened to the left and right by operating the bulldozer control handle. Each opened valve core can be automatically reset under a reset spring, so that the entire mechanism has the advantages of comfortable operation, stable performance, compact structure, easy manufacturing, and low cost, and is closer to the user's purchase tolerance.

Description

Technical Field

[0001] The invention relates to the technical field of hydraulic multi-way valves, and in particular to a control mechanism of a hydraulic multi-way valve. Background Art

[0002] With the arrival of China's aging population, labor shortages, and rising labor costs, people are increasingly demanding micro-excavation equipment in construction machinery. At the same time, people have put forward higher requirements for the stability and comfort of micro-excavator control. At present, there are many types of micro-excavators, and the control methods and structural arrangements are different, which results in poor controllability of multi-way valves and high manufacturing costs. Designing a multi-way valve control mechanism that is comfortable to control, stable in performance, compact in structure, easy to manufacture, lower in cost, and closer to the user's purchasing tolerance can meet the needs of the market. Summary of the invention

[0003] In view of this, an object of the present invention is to provide a control mechanism for a hydraulic multi-way valve, which has the advantages of comfortable operation, stable performance, compact structure, easy manufacturing and low cost.

[0004] The present invention solves the above problems by the following technical means: a control mechanism of a hydraulic multi-way valve, comprising a bulldozer control handle, a push-pull flexible shaft, and a lower transmission shaft, an upper transmission shaft, a multi-way valve bulldozer coupling, a multi-way valve crushing coupling, a multi-way valve deflection coupling, a left pedal assembly, and a right pedal assembly integrated through a chassis, wherein the lower transmission shaft is arranged along the Y direction and both ends are rotatably connected to the chassis, and the upper transmission shaft is arranged along the X direction and both ends are also rotatably connected to the chassis;

[0005] The rotating sleeve on the lower transmission shaft is provided with a transmission sleeve 5, and the transmission sleeve 5 is connected to the valve core of the multi-way valve bulldozer through a connecting rod, and the clockwise and counterclockwise rotation of the transmission sleeve 5 can drive the valve core of the multi-way valve bulldozer to open leftward and rightward, and the bulldozer operating handle drives the transmission sleeve 5 to rotate clockwise and counterclockwise through the push-pull flexible shaft;

[0006] The rotating sleeve on the lower transmission shaft is provided with a transmission sleeve three, and the transmission sleeve three is connected to the valve core of the multi-way valve crushing link through a connecting rod, and the clockwise and counterclockwise rotation of the transmission sleeve three can drive the valve core of the multi-way valve crushing link to open to the left and right, and the left pedal assembly drives the transmission sleeve three to rotate clockwise and counterclockwise through the ball head connecting rod one;

[0007] The left and right ends of the upper transmission shaft are respectively fixed with a transmission sleeve 1 and a transmission sleeve 2, and the front and rear ends of the lower transmission shaft are respectively fixed with a transmission sleeve 6 and a transmission sleeve 4. The transmission sleeve 4 is connected to the valve core of the multi-way valve deflection connection through a connecting rod, and the clockwise and counterclockwise rotation of the transmission sleeve 4 can drive the valve core of the multi-way valve deflection connection to open to the left and right. The right pedal assembly drives the transmission sleeve 2, the upper transmission shaft and the transmission sleeve 1 to rotate clockwise and counterclockwise synchronously through the ball head connecting rod 2, and the transmission sleeve 1 drives the transmission sleeve 6, the lower transmission shaft and the transmission sleeve 4 to rotate clockwise and counterclockwise synchronously through the ball head connecting rod 3.

[0008] Furthermore, the left pedal assembly and the right pedal assembly are both connected to the base frame via a pedal bracket.

[0009] Furthermore, limiting bolts are provided between the bottom of the left pedal assembly and the pedal bracket, and between the bottom of the right pedal assembly and the pedal bracket.

[0010] Furthermore, pedal covers are installed at both the left pedal assembly and the right pedal assembly.

[0011] Furthermore, both ends of the upper transmission shaft and the lower transmission shaft are rotatably supported by the base frame through matching bearings and bearing seats or matching bearings and bearing sleeves.

[0012] Furthermore, the transmission sleeve 1 and the transmission sleeve 2 are both locked and sleeved with the upper transmission shaft through pin 1, and the transmission sleeve 4 and the transmission sleeve 6 are both locked and sleeved with the lower transmission shaft through pin 2.

[0013] Beneficial effects of the present invention: The control mechanism of the hydraulic multi-way valve of the present application includes a bulldozer operating handle, a push-pull flexible shaft, and a lower transmission shaft, an upper transmission shaft, a multi-way valve bulldozer coupling, a multi-way valve crushing coupling, a multi-way valve deflection coupling, a left pedal assembly, and a right pedal assembly integrated together through a chassis. In specific use, the valve cores of the multi-way valve crushing coupling and the multi-way valve deflection coupling can be opened to the left and right respectively by operating the left pedal assembly and the right pedal assembly, and the valve core of the multi-way valve bulldozer coupling can be opened to the left and right by operating the bulldozer operating handle. Each opened valve core can be automatically reset under the reset spring, so that the entire mechanism has the advantages of comfortable operation, stable performance, compact structure, easy manufacturing and low cost, which is closer to the user's purchase tolerance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] Figure 1 It is a structural schematic diagram of the present invention. DETAILED DESCRIPTION

[0016] The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

[0017] like Figure 1 As shown, the control mechanism of the hydraulic multi-way valve of the present application includes a bulldozer operating handle 15, a push-pull flexible shaft 18, and a lower transmission shaft 16, an upper transmission shaft 8, a multi-way valve bulldozer link 23, a multi-way valve crushing link 24, a multi-way valve deflection link 25, a left pedal assembly 2, and a right pedal assembly 11 integrated through a chassis 22. The lower transmission shaft 16 is arranged along the Y direction and both ends are rotatably connected to the chassis 22. The upper transmission shaft 8 is arranged along the X direction and both ends are also rotatably connected to the chassis 22. Specifically, the left pedal assembly 2 and the right pedal assembly 11 are connected to the chassis through a pedal bracket 28. Both ends of the upper transmission shaft 8 and the lower transmission shaft 16 are rotatably supported by matching bearings 6 and bearing seats 5 or matching bearings and bearing sleeves 21 and base frame 22. In the present embodiment, both ends of the upper transmission shaft are rotatably supported by matching bearings and bearing seats and base frame, the front end of the lower transmission shaft is rotatably supported by matching bearings and bearing seats and base frame, and the rear end is rotatably supported by matching bearings and bearing sleeves and base frame. The bearings are selected from bearing 12202GB / T281-94.

[0018] A transmission sleeve 5 20 is rotatably sleeved on the lower transmission shaft 16, and the transmission sleeve 5 20 is connected to the valve core of the multi-way valve bulldozer link 23 through a connecting rod 19. The clockwise and counterclockwise rotation of the transmission sleeve 5 20 relative to the lower transmission shaft 16 can drive the valve core of the multi-way valve bulldozer link 23 to open to the left and right. The bulldozer operating handle 15 drives the transmission sleeve 5 to rotate clockwise and counterclockwise relative to the lower transmission shaft through the push-pull flexible shaft 18.

[0019] A transmission sleeve 3 14 is rotatably sleeved on the lower transmission shaft 16, and the transmission sleeve 3 14 is connected to the valve core of the multi-way valve crushing link 24 through a connecting rod 19, and the clockwise and counterclockwise rotation of the transmission sleeve 3 14 relative to the lower transmission shaft 16 can drive the valve core of the multi-way valve crushing link 24 to open to the left and right. The right end of the left pedal assembly 2 is connected to the transmission sleeve 3 14 through a ball head connecting rod 1 4, and the up and down movement of the ball head connecting rod 1 4 drives the transmission sleeve 3 14 to rotate clockwise and counterclockwise relative to the lower transmission shaft 16.

[0020] The left and right ends of the upper transmission shaft 8 are respectively fixedly sleeved with a transmission sleeve 1 7 and a transmission sleeve 2 9, and the front and rear ends of the lower transmission shaft 16 are respectively fixedly sleeved with a transmission sleeve 6 27 and a transmission sleeve 4 17. Specifically, the transmission sleeve 1 7 and the transmission sleeve 2 9 are both locked and sleeved with the upper transmission shaft 8 through a pin 10, and the transmission sleeve 4 17 and the transmission sleeve 6 27 are both locked and sleeved with the lower transmission shaft 16 through a pin 26. The pin 10 and the pin 26 are both 8X30 GB / T 879.1. The transmission sleeve 4 17 is connected to the valve core of the multi-way valve deflection link 25 through a connecting rod 19, and the clockwise and counterclockwise rotation of the transmission sleeve 4 17 can drive the valve core of the multi-way valve deflection link 25 to open to the left and right. The right end of the right pedal assembly 11 is connected to the transmission sleeve 2 9 through the ball head connecting rod 2 12. The up and down movement of the ball head connecting rod 2 12 drives the transmission sleeve 2 2, the upper transmission shaft 8 and the transmission sleeve 1 7 to rotate synchronously clockwise and counterclockwise. The transmission sleeve 1 7 is connected to the transmission sleeve 6 27 through the ball head connecting rod 3 13. The up and down movement of the ball head connecting rod 3 13 drives the transmission sleeve 6 27, the lower transmission shaft 16 and the transmission sleeve 4 17 to rotate synchronously clockwise and counterclockwise.

[0021] The specific working principle of this operating mechanism is described in detail below:

[0022] When it is necessary to control the valve core of the multi-way valve breaking link 24 to open to the left, step down on the left side of the pedal of the left pedal assembly 2 with the left foot, drive the ball head connecting rod 14 to move upward, and the transmission sleeve 3 14 rotates clockwise with the transmission shaft 16 as the center under the upward pulling force of the ball head connecting rod 14, driving the corresponding connecting rod 19 to move to the left, thereby driving the valve core of the multi-way valve breaking link 24 to move to the left to open. When the left foot pedaling force disappears, the valve core of the multi-way valve breaking link 24 automatically returns to the middle position and stops working under the action of the reset spring. When it is necessary to control the valve core of the multi-way valve breaking link 24 to open to the right, the movement process is opposite to the above, that is, step down on the right side of the pedal of the left pedal assembly 2 with the left foot to push the ball head connecting rod 14 to move downward. The structure of the reset spring resetting the valve core is an existing conventional design and is not reflected in the attached drawings.

[0023] When it is necessary to control the valve core of the multi-way valve deflection link 25 to open to the left, step on the left side of the right pedal assembly 11 with the right foot, driving the ball head connecting rod 2 12 to move downward. Because the transmission sleeve 2 9, the transmission sleeve 1 7 and the upper transmission shaft 8 are connected as a whole through the pin 10, the transmission sleeve 1 7 rotates counterclockwise around the upper transmission shaft 8 under the action of the downward force, and at the same time drives the ball head connecting rod 3 13 to move downward. Because the transmission sleeve 6 27, the transmission sleeve 4 17 and the lower transmission shaft 16 are connected as a whole through the pin 26, the transmission sleeve 4 17 rotates clockwise around the lower transmission shaft 16 under the action of the downward force, driving the corresponding connecting rod 19 to move to the left, thereby driving the valve core of the multi-way valve deflection link 25 to move to the left to open. When the right foot pedaling force disappears, the valve core of the multi-way valve deflection link 25 automatically returns to the middle position and stops working under the action of the reset spring. When the valve core of the multi-way valve deflection link 25 needs to be controlled to open to the right, the movement process is opposite to the above, that is, the right side of the right pedal assembly 11 is stepped down with the right foot to drive the ball head connecting rod 2 12 to move upward. The structure of the return spring return valve core is an existing conventional design and is not shown in the drawings.

[0024] When it is necessary to control the valve core of the multi-way valve bulldozer link 23 to open to the left, push the bulldozer control handle 15 forward by hand, pull the transmission sleeve 5 20 to rotate clockwise relative to the lower transmission shaft 16 through the push-pull flexible shaft 18, drive the corresponding connecting rod to move to the left, thereby driving the valve core of the multi-way valve bulldozer link 23 to move to the left to open, and when the thrust of the hand disappears, the valve core of the multi-way valve bulldozer link 23 automatically returns to the middle position and stops working under the action of the reset spring. When it is necessary to control the valve core of the multi-way valve bulldozer link 23 to open to the right, the movement process is opposite to the above, that is, pull the bulldozer control handle 15 backward by hand, and pull the transmission sleeve 5 20 to rotate counterclockwise relative to the lower transmission shaft 16 through the push-pull flexible shaft 18. The structure of the reset spring reset valve core is an existing conventional design and is not reflected in the attached drawings.

[0025] Preferably, in order to prevent the left pedal assembly 2 and the right pedal assembly 11 from being accidentally stepped on by external force, a pedal cover plate 3 is installed at both the left pedal assembly and the right pedal assembly. When in use, the pedal cover plate can be opened.

[0026] Preferably, limiting bolts 1 are provided between the bottom of the left pedal assembly 2 and the pedal bracket 28, and between the bottom of the right pedal assembly 11 and the pedal bracket 28, and the downward travel of the left pedal assembly and the right pedal assembly can be limited respectively by the corresponding limiting bolts.

[0027] In summary, the control mechanism of the hydraulic multi-way valve of the present application can be used to open the valve cores of the multi-way valve crushing link and the multi-way valve deflection link to the left and right respectively by operating the left foot pedal assembly and the right foot pedal assembly, and the valve core of the multi-way valve bulldozer link can be opened to the left and right by operating the bulldozer operating handle. Each opened valve core can be automatically reset under the reset spring, so that the entire mechanism has the advantages of comfortable operation, stable performance, compact structure, easy manufacturing and low cost, which is closer to the user's purchase tolerance.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A control mechanism for a hydraulic multi-way valve, characterized in that: It includes a bulldozer operating handle, a push-pull flexible shaft, and a lower transmission shaft, an upper transmission shaft, a multi-way valve bulldozer coupling, a multi-way valve crushing coupling, a multi-way valve deflection coupling, a left pedal assembly, and a right pedal assembly integrated through a chassis, wherein the lower transmission shaft is arranged along the Y direction and both ends are rotatably connected to the chassis, and the upper transmission shaft is arranged along the X direction and both ends are also rotatably connected to the chassis; The rotating sleeve on the lower transmission shaft is provided with a transmission sleeve 5, and the transmission sleeve 5 is connected to the valve core of the multi-way valve bulldozer through a connecting rod, and the clockwise and counterclockwise rotation of the transmission sleeve 5 can drive the valve core of the multi-way valve bulldozer to open leftward and rightward, and the bulldozer operating handle drives the transmission sleeve 5 to rotate clockwise and counterclockwise through the push-pull flexible shaft; The rotating sleeve on the lower transmission shaft is provided with a transmission sleeve three, and the transmission sleeve three is connected to the valve core of the multi-way valve crushing link through a connecting rod, and the clockwise and counterclockwise rotation of the transmission sleeve three can drive the valve core of the multi-way valve crushing link to open to the left and right, and the left pedal assembly drives the transmission sleeve three to rotate clockwise and counterclockwise through the ball head connecting rod one; The left and right ends of the upper transmission shaft are respectively fixed with a transmission sleeve 1 and a transmission sleeve 2, and the front and rear ends of the lower transmission shaft are respectively fixed with a transmission sleeve 6 and a transmission sleeve 4. The transmission sleeve 4 is connected to the valve core of the multi-way valve deflection connection through a connecting rod, and the clockwise and counterclockwise rotation of the transmission sleeve 4 can drive the valve core of the multi-way valve deflection connection to open to the left and right. The right pedal assembly drives the transmission sleeve 2, the upper transmission shaft and the transmission sleeve 1 to rotate clockwise and counterclockwise synchronously through the ball head connecting rod 2, and the transmission sleeve 1 drives the transmission sleeve 6, the lower transmission shaft and the transmission sleeve 4 to rotate clockwise and counterclockwise synchronously through the ball head connecting rod 3.

2. The control mechanism of the hydraulic multi-way valve according to claim 1, characterized in that: The left pedal assembly and the right pedal assembly are both connected to the chassis via a pedal bracket.

3. The control mechanism of the hydraulic multi-way valve according to claim 2, characterized in that: Limiting bolts are arranged between the bottom of the left pedal assembly and the pedal bracket, and between the bottom of the right pedal assembly and the pedal bracket.

4. The control mechanism of the hydraulic multi-way valve according to claim 3, characterized in that: Pedal covers are installed at the left pedal assembly and the right pedal assembly.

5. The control mechanism of the hydraulic multi-way valve according to claim 1, characterized in that: Both ends of the upper transmission shaft and the lower transmission shaft are rotatably supported by the bottom frame through matching bearings and bearing seats or matching bearings and bearing sleeves.

6. The control mechanism of the hydraulic multi-way valve according to any one of claims 1 to 5, characterized in that: The transmission sleeve 1 and the transmission sleeve 2 are both locked and sleeved with the upper transmission shaft through pin 1, and the transmission sleeve 4 and the transmission sleeve 6 are both locked and sleeved with the lower transmission shaft through pin 2.

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