Disassembling tool for pressure regulating valve of hydraulic pump

Abstract

The invention discloses a hydraulic pump pressure regulating valve disassembling tool which comprises a tubular handle (1), two pull rods (2) capable of sliding in the radial direction of the handle (1) are arranged in the handle (1), the front ends of the pull rods (2) extend out of the handle (1) and are provided with pins (3) extending outwards in the radial direction, a push rod (4) is arranged in the handle (1), the rear end of the push rod (4) extends out of the handle (1), and an ejector rod (5) is arranged on the front side of the push rod (4). A guide conical surface (6) is arranged at the front end of the ejector rod (5); the front end of the ejector rod (5) is positioned between the two pull rods (2); a pin handle (7) is arranged at the rear end of the push rod (4) and penetrates through the push rod (4) in the radial direction. And the two ends of the pin handle (7) are symmetrically distributed relative to the axis of the push rod (4). The pressure regulating valve dismounting device has the advantages that the pressure regulating valve dismounting efficiency can be improved, and parts are prevented from being scratched.

Description

Technical Field

[0001] The invention relates to a disassembly tool for a hydraulic pump pressure regulating valve. Background Art

[0002] The pressure regulating valve is installed in the oil distributor cap of the hydraulic pump (referring to the plunger pump). In order to check whether the sealing ring of the pressure regulating valve is damaged, the pressure regulating valve needs to be disassembled and assembled several times each time the hydraulic pump is assembled. Workers visually check the integrity of the sealing ring to prevent the cut sealing ring residue from being accidentally installed into the hydraulic pump.

[0003] like Figure 3 As shown, the mounting hole for mounting the pressure regulating valve in the oil separation cover 20 is a blind hole 21, and the pressure regulating valve can only be installed and removed from one end of the oil separation cover 20. The structure of the pressure regulating valve includes a valve sleeve 22 and a valve core 23. A sealing ring 24 is arranged on the outer side of the valve sleeve 22. A concave cavity 25 is formed at one end of the valve sleeve 22. One end of the valve core 23 extends into the concave cavity 25. Two symmetrically distributed decomposition holes 26 are arranged on the side wall of the concave cavity 25.

[0004] When removing the pressure regulating valve, since the sealing ring 24 creates a large friction force between the pressure regulating valve and the oil separation cover 20, it is not feasible to use gravity to make the pressure regulating valve fall out of the oil separation cover 20 in a tipping manner. When using a common expander on the market to remove the pressure regulating valve, it is necessary to extend the expansion head of the expander into the concave cavity 25 so that the expansion head and the valve sleeve 22 are in friction connection, and the pressure regulating valve is pulled out by using the friction between the expansion head and the valve sleeve 22. However, since one end of the valve core 23 is located in the concave cavity 25, the expansion head is inserted into the concave cavity 25 at a very shallow depth, and the contact area between the expansion head and the valve sleeve 22 is very small, and the friction force created is small, it is still difficult to remove the pressure regulating valve, and sometimes it takes several attempts to succeed, but this is undoubtedly very inefficient and may cause scratches on parts. Summary of the invention

[0005] The purpose of the present invention is to provide a hydraulic pump pressure regulating valve disassembly tool. The present invention has the advantages of improving the efficiency of disassembling the pressure regulating valve and avoiding scratches on parts.

[0006] The technical solution of the present invention is: a hydraulic pump pressure regulating valve disassembly tooling, including a tubular handle, two pull rods that can slide radially along the handle are arranged in the handle, the front end of the pull rod extends out of the handle and is provided with a pin extending radially outward, a push rod is arranged in the handle, the rear end of the push rod extends out of the handle, a push rod is arranged on the front side of the push rod, a guide cone is arranged on the front end of the push rod, and the front end of the push rod is located between the two pull rods.

[0007] In the aforementioned hydraulic pump pressure regulating valve disassembly tool, a pin handle is provided at the rear end of the push rod, and the pin handle radially passes through the push rod.

[0008] In the aforementioned hydraulic pump pressure regulating valve disassembly tool, the two ends of the pin handle are symmetrically distributed about the axis of the push rod.

[0009] In the aforementioned hydraulic pump pressure regulating valve disassembly tooling, a step hole is provided on the circumference of the push rod, with the large end of the step hole facing forward, and a buckle is provided at the front end of the push rod that extends into the step hole, and the buckle hooks the bottom surface of the step hole.

[0010] In the aforementioned hydraulic pump pressure regulating valve disassembly tooling, two parallel pins are provided in the handle, and the two pins are respectively close to the front and rear ends of the pull rod. Both ends of the pins are fixed to the handle, and the pins pass through the pull rod. The pin close to the rear end of the pull rod passes through the pull rod, and a long groove cooperating with the pins is provided on the pull rod.

[0011] In the aforementioned hydraulic pump pressure regulating valve disassembly tooling, the two pull rods are symmetrically distributed about the axis of the handle, and the pull rod includes a rear arc plate and a front arc plate, the rear arc plate is connected to the front arc plate through a tapered plate, and the rear arc plate and the front arc plate are coaxial. The diameter of the rear arc plate is greater than the diameter of the front arc plate, and the front arc plate extends out of the handle and is provided with a pin.

[0012] In the aforementioned hydraulic pump pressure regulating valve disassembly tooling, a reset pin is provided on the outer side of the rear arc-shaped plate, the outer end of the reset pin extends out of the handle, and the inner end of the reset pin extends radially outward to form an anti-slip block.

[0013] In the aforementioned hydraulic pump pressure regulating valve disassembly tooling, the push rod is threadedly connected to the rear end of the handle, and the push rod is rotatably connected to the push rod.

[0014] Compared with the prior art, the present invention utilizes a pin arranged on a movable pull rod to avoid the valve core, and by inserting the pin into the decomposition hole of the pressure regulating valve, the tooling and the pressure regulating valve are connected in a reliable axial direction, and a great pulling force can be applied to the pressure regulating valve by the tooling, so that the pressure regulating valve can be easily disassembled, and the pressure regulating valve can be disassembled in one time, thereby improving the working efficiency and preventing the parts from being scratched. Therefore, the present invention has the advantages of improving the efficiency of disassembling the pressure regulating valve and avoiding the scratching of the parts.

[0015] In addition, through structural improvements, the present invention can also achieve rapid separation between the tooling and the pressure regulating valve, further improving work efficiency, and the present invention has a simple structure and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view schematic diagram of the present invention.

[0017] Figure 2 It is a schematic diagram of the disassembly tool inserted into the blind hole of the oil separator cover.

[0018] Figure 3 This is a schematic diagram of the pressure regulating valve installed in the oil distributor cap.

[0019] The marks in the accompanying drawings are: 1-handle, 2-pull rod, 3-pin, 4-push rod, 5-top rod, 6-guide cone, 7-pin handle, 8-step hole, 9-buckle, 10-latch pin, 11-long groove, 12-rear arc plate, 13-front arc plate, 14-conical plate, 15-reset pin, 16-anti-slip block; 20-oil separator cover, 21-blind hole, 22-valve sleeve, 23-valve core, 24-sealing ring, 25-concave cavity, 26-decomposition hole. DETAILED DESCRIPTION

[0020] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0021] Embodiment. A hydraulic pump pressure regulating valve disassembly tool, such as Figure 1 As shown, it includes a tubular handle 1, two pull rods 2 are arranged in the handle 1, the front end of the pull rod 2 extends out of the handle 1 and is provided with a pin 3 extending radially outward, a push rod 4 is arranged in the handle 1, the push rod 4 is screwed to the rear end of the handle 1, the rear end of the push rod 4 extends out of the handle 1, a push rod 5 is arranged on the front side of the push rod 4, a guide cone 6 is arranged at the front end of the push rod 5, and the front end of the push rod 5 is located between the two pull rods 2.

[0022] A pin handle 7 is provided at the rear end of the push rod 4 , and the pin handle 7 radially passes through the push rod 4 , and two ends of the pin handle 7 are symmetrically distributed about the axis of the push rod 4 .

[0023] The push rod 5 is provided with a step hole 8 in the circumferential direction, with the large end of the step hole 8 facing forward. The front end of the push rod 4 is provided with a buckle 9 extending into the step hole 8. The buckle 9 hooks the bottom surface of the step hole 8. The push rod 4 is rotatably connected to the push rod 5, and the axial movement of the push rod 4 can drive the axial movement of the push rod 5.

[0024] Two parallel latches 10 are arranged in the handle 1. The two latches 10 are respectively close to the front and rear ends of the pull rod 2. Both ends of the latches 10 are fixed to the handle 1, and the latches 10 pass through the pull rod 2. The latches 10 play a directional role, so that the pull rod 2 can move in the axial direction of the latches 10. The latches 10 close to the rear end of the pull rod 2 pass through the pull rod 2. The pull rod 2 is provided with a long slot 11 that cooperates with the latches 10. The long slot 11 is provided to prevent the axial movement of the top rod 5 from interfering with the latches 10.

[0025] The two pull rods 2 are symmetrically distributed about the axis of the handle 1. The pull rod 2 includes a rear curved plate 12 and a front curved plate 13. The rear curved plate 12 is connected to the front curved plate 13 through a tapered plate 14. The rear curved plate 12 and the front curved plate 13 are coaxial. The diameter of the rear curved plate 12 is larger than the diameter of the front curved plate 13. The front curved plate 13 extends out of the handle 1 and is provided with a pin 3. The curved surface structure on the pull rod 2 makes the structural strength of the pull rod 2 greater and not easy to bend. The tapered plate 14 on the pull rod 2 cooperates with the guide cone 6 at the front end of the push rod 5 to play a guiding role.

[0026] A reset pin 15 is provided on the outer side of the rear arc plate 12 , the outer end of the reset pin 15 extends out of the handle 1 , and the inner end of the reset pin 15 extends radially outward to form an anti-slip block 16 , a gap is left between the anti-slip block 16 and the handle 1 , and the reset pin 15 is located between the two latch pins 10 .

[0027] How to use: Figure 2 As shown, the front end of the handle 1 is inserted into the blind hole 21 of the oil separator cover 20 and continues to move forward until the pull rod 2 contacts the bottom surface of the cavity 25. At this time, the pin 3 is located at the inner end of the decomposition hole 26, and the two pull rods 2 are respectively located on both sides of the valve core 23.

[0028] The pin handle 7 is rotated, and the pin handle 7 drives the push rod 4 to rotate, and the push rod 4 moves forward axially until the guide cone surface 6 contacts the conical plate 14. As the push rod 4 continues to move forward, the distance between the two pull rods 2 increases, and the pull rod 2 moves outward along the axial direction of the latch 10, so that the pin 3 enters the decomposition hole 26, and an axial connection is established between the pin 3 and the pressure regulating valve. Pull the pin handle 7 outward, and the pin handle 7 can provide a better fulcrum. The pin handle 7 drives the handle 1 to move outward, and the handle 1 drives the pull rod 2 through the latch 10, and the pull rod 2 drives the pressure regulating valve through the pin 3, and the pressure regulating valve is removed from the oil separation cover 20.

[0029] Turn the pin handle 7 to make the push rod 4 axially retreat, and the push rod 4 drives the push rod 5 to retreat. The front end of the push rod 5 retreats from between the two front arc plates 13 to between the two rear arc plates 12, and at the same time presses the reset pin 15 inward. The reset pin 15 drives the pin 3 to move inward through the pull rod 2, and the pressure regulating valve is separated from the tooling, completing all the disassembly work of the pressure regulating valve.

[0030] In the description of the embodiments, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the embodiments and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation.

Claims

1. A hydraulic pump pressure regulating valve disassembly tool, characterized by: The invention comprises a tubular handle (1), wherein two pull rods (2) are arranged in the handle (1) and can slide radially along the handle (1), the front end of the pull rod (2) extends out of the handle (1) and is provided with a pin (3) extending radially outward, a push rod (4) is arranged in the handle (1), the rear end of the push rod (4) extends out of the handle (1), a push rod (5) is arranged on the front side of the push rod (4), a guide cone (6) is arranged at the front end of the push rod (5), and the front end of the push rod (5) is located between the two pull rods (2).

2. The hydraulic pump pressure regulating valve disassembly tool according to claim 1, characterized in that: A pin handle (7) is provided at the rear end of the push rod (4), and the pin handle (7) radially passes through the push rod (4).

3. The hydraulic pump pressure regulating valve disassembly tool according to claim 2, characterized in that: The two ends of the pin handle (7) are symmetrically distributed about the axis of the push rod (4).

4. The hydraulic pump pressure regulating valve disassembly tool according to claim 1, characterized in that: The push rod (5) is provided with a step hole (8) in the circumferential direction, with the large end of the step hole (8) facing forward, and the front end of the push rod (4) is provided with a buckle (9) extending into the step hole (8), and the buckle (9) hooks the bottom surface of the step hole (8).

5. The hydraulic pump pressure regulating valve disassembly tool according to claim 1, characterized in that: The handle (1) is provided with two mutually parallel latches (10), the two latches (10) are respectively close to the front and rear ends of the pull rod (2), both ends of the latches (10) are fixed to the handle (1), the latches (10) pass through the pull rod (2), the latches (10) close to the rear end of the pull rod (2) pass through the pull rod (2), and the pull rod (2) is provided with a long groove (11) that cooperates with the latches (10).

6. The hydraulic pump pressure regulating valve disassembly tool according to claim 1, characterized in that: The two pull rods (2) are symmetrically distributed about the axis of the handle (1), and the pull rod (2) comprises a rear curved plate (12) and a front curved plate (13), the rear curved plate (12) is connected to the front curved plate (13) through a conical plate (14), and the rear curved plate (12) and the front curved plate (13) are coaxial. The diameter of the rear curved plate (12) is greater than the diameter of the front curved plate (13), and the front curved plate (13) extends out of the handle (1) and is provided with a pin (3).

7. The hydraulic pump pressure regulating valve disassembly tool according to claim 6, characterized in that: A reset pin (15) is arranged on the outer side of the rear arc-shaped plate (12), the outer end of the reset pin (15) extends out of the handle (1), and the inner end of the reset pin (15) extends radially outward to form an anti-dropping block (16).

8. The hydraulic pump pressure regulating valve disassembly tool according to claim 1, characterized in that: The push rod (4) is threadedly connected to the rear end of the handle (1), and the push rod (4) is rotatably connected to the top rod (5).

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