Anti-stuck plunger shoe assembly

Abstract

The utility model discloses a kind of anti-jamming plunger shoe assembly, comprising: shoe, plunger rod and ball head, plunger rod is located at the side of shoe, ball head is fixed at the side of plunger rod, and ball head is located inside shoe;Protective structure, protective structure includes fixed frame, first spring, clamping block and mounting frame, fixed frame has four, four fixed frames are fixed on the outer surface of shoe, first spring has four, four first springs are fixed in corresponding fixed frame inside, clamping block has four, four clamping blocks are fixed at the end of first spring, mounting frame has four, and four mounting frames are fixed on the outer surface of plunger rod, and clamping block is inserted into corresponding mounting frame, and mounting hole is set in the lower end of clamping block Two sides, and second spring is fixed in mounting hole inside.The utility model when plunger rod is excessively rotated, first spring is further compressed or stretched, generates reverse tension, plunger rod is pulled back to normal position, spring absorbs rotation impact, avoid rigid collision, prolong component life.

Description

Technical Field

[0001] This utility model relates to the field of plunger pump technology, specifically to an anti-jamming plunger slipper assembly. Background Technology

[0002] The plunger slipper assembly is a crucial component for the normal operation of a plunger pump, and its performance directly affects the pump's performance. The plunger in a hydraulic plunger pump must possess both good overall rigidity and low mass to reduce inertia during rotation, thereby lessening hydraulic clamping forces.

[0003] A search revealed Chinese Patent Publication No. CN205225652U, which discloses an anti-jamming plunger slipper assembly. The assembly includes a slipper and a plunger. The plunger comprises a column body and a head adapted to the slipper. The head and column body have a rounded transition. The column body has symmetrical spherical surfaces at both ends, forming a drum-shaped structure. An axial oil injection channel is formed on the plunger, consisting of a first oil injection hole, a second oil injection hole, and an oil inlet connected sequentially. The diameter of the second oil injection hole is smaller than the diameter of the first oil injection hole. The advantages of this invention are: simple structure; the rounded transition between the head and column body ensures flexibility in the connection between the head and slipper; the drum-shaped column body effectively reduces hydraulic clamping force, providing an anti-jamming effect, thereby reducing wear on the cylinder bore, better meeting the rapid variable displacement characteristics of the entire pump, and improving the service life of the plunger pump.

[0004] In the aforementioned utility model, excessive rotation of the plunger ball head within the slipper ball socket can cause high-pressure oil to leak from the gap, resulting in thinning or even failure of the hydrostatic oil film between the slipper and the swashplate, causing direct metal-to-metal contact friction, and leading to slipper wear or breakage. Therefore, it is necessary to provide a structure that can quickly limit the rotation of the plunger ball head to improve the life of the plunger slipper. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-jamming plunger slipper assembly to solve the problems mentioned in the background art. To solve the above technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is an anti-jamming plunger slipper assembly, comprising:

[0007] The components include a slipper, a plunger rod, and a ball head, wherein the plunger rod is located on one side of the slipper, the ball head is fixed to one side of the plunger rod, and the ball head is located inside the slipper.

[0008] The protective structure includes a fixed frame, a first spring, a locking block, and a mounting frame. There are four fixed frames, which are fixed to the outer surface of the slipper. There are four first springs, which are fixed inside the corresponding fixed frames. There are four locking blocks, which are fixed to the ends of the first springs. There are four mounting frames, which are fixed to the outer surface of the plunger rod, and the locking blocks are inserted into the corresponding mounting frames.

[0009] Furthermore, a first oil injection hole is provided at the center of the plunger rod, and a second oil injection hole is provided at the center of the inner side of the slipper, with the ends of the first and second oil injection holes spreading outwards.

[0010] Furthermore, mounting holes are provided on both sides of the lower end of the card block, and a second spring is fixed inside the mounting holes.

[0011] Furthermore, the end of the second spring is fixed with a locking post, and the mounting frame has locking slots on both sides.

[0012] Furthermore, the end of the locking pin extends into the locking groove.

[0013] Furthermore, it also includes an anti-jamming structure, which includes an oil reservoir, a rotating hole, and a rotating ball. The oil reservoir is located inside the slipper, the rotating hole is located on the inner wall of the slipper, and the rotating ball is rotatably installed inside the rotating hole.

[0014] Furthermore, a third oil injection hole is provided above the oil storage tank, and a sealing plug is inserted inside the third oil injection hole.

[0015] Furthermore, the rotating ball contacts the outer surface of the ball head, the oil reservoir is filled with lubricating oil, and the third oil injection hole is interconnected with the oil reservoir.

[0016] This utility model has the following beneficial effects:

[0017] This utility model relates to a sliding shoe, a plunger rod, a first oil injection hole, a ball head, a second oil injection hole, and a protective structure. During testing and use, the locking pin is pressed inwards, compressing the second spring and causing the pin to sink into the mounting hole. Then, the locking block is inserted into the mounting frame. When the pin and slot are aligned, the second spring quickly recovers its deformation under the spring force, causing the pin to engage in the slot and fixing the locking block in the mounting frame. Four first springs are distributed on the outer surface of the plunger rod. When the ball head rotates within the sliding shoe, the elastic force of the first springs is suitable for the normal rotation of the plunger rod. If the plunger rod rotates excessively, the first springs will pull it back. When the plunger rod rotates excessively, the first springs are further compressed or stretched, generating a reverse pulling force that pulls the plunger rod back to its normal position. The springs absorb rotational impact, preventing rigid collisions and extending the component's lifespan. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0020] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0021] Figure 3 This is an exploded view of the protective structure of this utility model;

[0022] Figure 4 This is an exploded view of the anti-jamming structure of this utility model.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 11. Slipper; 12. Piston rod; 13. First oil filling hole; 14. Ball head; 15. Second oil filling hole;

[0025] 21. Fixing frame; 22. First spring; 23. Locking block; 24. Mounting hole; 25. Second spring; 26. Locking post; 27. Mounting frame; 28. Locking slot;

[0026] 31. Oil reservoir; 32. Third oil injection hole; 33. Sealing plug; 34. Rotating hole; 35. Rotating ball. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the embodiments of this utility model will be described in further detail below with reference to the accompanying drawings.

[0029] Please see Figure 1-4 As shown, this utility model is an anti-jamming plunger slipper assembly, comprising:

[0030] The slide shoe 11, plunger rod 12 and ball head 14 are provided. The plunger rod 12 is located on one side of the slide shoe 11, and the ball head 14 is fixed on one side of the plunger rod 12 and located inside the slide shoe 11. A first oil injection hole 13 is provided in the center of the plunger rod 12, and a second oil injection hole 15 is provided in the center of the interior of the slide shoe 11. The ends of the first oil injection hole 13 and the second oil injection hole 15 spread outward.

[0031] The slipper 11 is used to transmit the axial movement of the plunger and bear the reaction force of the swashplate. The plunger rod 12 is the core component in the hydraulic pump that transmits hydraulic pressure and realizes the functions of oil suction and discharge through reciprocating motion.

[0032] The protective structure includes a fixed frame 21, a first spring 22, a locking block 23, and a mounting frame 27. There are four fixed frames 21, which are fixed to the outer surface of the slipper 11. There are four first springs 22, which are fixed inside the corresponding fixed frames 21. There are four locking blocks 23, which are fixed to the ends of the first springs 22. There are four mounting frames 27, which are fixed to the outer surface of the plunger rod 12, and the locking blocks 23 are inserted into the corresponding mounting frames 27.

[0033] The fixing frame 21 is used to fix the first spring 22 and the locking block 23. The first spring 22 compensates for the relative displacement between the plunger rod 12 and the slipper 11 through elastic deformation, preventing the plunger rod 12 from tilting or getting stuck due to uneven force. The locking block 23 is inserted into the mounting frame 27 on the outer surface of the plunger rod 12. The mounting frame 27 is used to accommodate the locking block 23.

[0034] The lower end of the card block 23 has mounting holes 24 on both sides, and a second spring 25 is fixed inside the mounting holes 24. The end of the second spring 25 is fixed with a card post 26, and the mounting frame 27 has card slots 28 on both sides, with the end of the card post 26 extending into the card slot 28.

[0035] Pressing the locking pin 26 compresses the second spring 25, which allows the locking block 23 to disengage from the mounting frame 27; after release, the spring pushes the locking pin 26 into the slot 28, achieving quick fixation.

[0036] Working principle:

[0037] When using the device during testing, press the locking post 26 inward. The locking post 26 compresses the second spring 25, causing the locking post 26 to be inserted into the mounting hole 24. Then, insert the locking block 23 into the mounting frame 27. When the locking post 26 is aligned with the locking groove 28, the second spring 25 will quickly recover its deformation under the elastic force of the spring, causing the locking post 26 to be inserted into the locking groove 28 and fixing the locking block 23 in the mounting frame 27. The four first springs 22 are distributed on the outer surface of the plunger rod 12. When the ball head 14 rotates in the slipper 11, the elastic force of the first springs 22 is suitable for the normal rotation of the plunger rod 12. Once the plunger rod 12 rotates excessively, the first springs 22 will pull the plunger rod 12 back.

[0038] In this step, when the plunger rod 12 rotates excessively, the first spring 22 is further compressed or stretched, generating a reverse pulling force to pull the plunger rod 12 back to its normal position. The spring absorbs the rotational impact, avoids rigid collisions, and extends the service life of the component.

[0039] Please see Figure 1-4 As shown, this embodiment, based on the above embodiment, further includes:

[0040] The anti-jamming structure includes an oil reservoir 31, a rotating hole 34, and a rotating ball 35. The oil reservoir 31 is located inside the slipper 11, the rotating hole 34 is located on the inner wall of the slipper 11, and the rotating ball 35 is rotatably installed inside the rotating hole 34. A third oil injection hole 32 is provided above the oil reservoir 31, and a sealing plug 33 is inserted inside the third oil injection hole 32. The rotating ball 35 is in contact with the outer surface of the ball head 14. The oil reservoir 31 is filled with lubricating oil, and the third oil injection hole 32 is interconnected with the oil reservoir 31.

[0041] The oil reservoir 31 is used to store lubricating oil, the rotating hole 34 is used to install the rotating ball 35, the rotating ball 35 is in contact with the outer surface of the ball head 14, the third oil injection hole 32 is connected to the oil reservoir 31 and is used to inject lubricating oil, and the sealing plug 33 is used to close the third oil injection hole 32.

[0042] Working principle:

[0043] When the plunger rod 12 and the slipper 11 rotate, the sealing plug 33 is pulled out and lubricating oil is injected into the oil reservoir 31. When the ball head 14 rotates, the ball head 14 contacts the rotating ball 35. The rotation of the ball head 14 drives the rotating ball 35 to rotate, and the rotating ball 35 flows out the lubricating oil inside the oil reservoir 31 to lubricate the ball head 14.

[0044] In this step, the rotation of the rotating ball 35 carries out the lubricating oil in the oil reservoir 31, continuously lubricating the contact surface between the ball head 14 and the slipper 11. The formation of the lubricating oil film further reduces wear and extends the service life of the component.

[0045] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An anti-jamming plunger slipper assembly, characterized in that, include: The components include a slipper (11), a plunger rod (12), and a ball head (14). The plunger rod (12) is located on one side of the slipper (11), and the ball head (14) is fixed on one side of the plunger rod (12) and located inside the slipper (11). The protective structure includes a fixed frame (21), a first spring (22), a locking block (23), and a mounting frame (27). There are four fixed frames (21), which are fixed to the outer surface of the slipper (11). There are four first springs (22), which are fixed inside the corresponding fixed frames (21). There are four locking blocks (23), which are fixed to the ends of the first springs (22). There are four mounting frames (27), which are fixed to the outer surface of the plunger rod (12), and the locking blocks (23) are inserted into the corresponding mounting frames (27).

2. The anti-jamming plunger slipper assembly according to claim 1, characterized in that: The plunger rod (12) has a first oil injection hole (13) at its center, and the slipper (11) has a second oil injection hole (15) at its inner center, with the ends of the first oil injection hole (13) and the second oil injection hole (15) spreading outward.

3. The anti-jamming plunger slipper assembly according to claim 1, characterized in that: The lower end of the card block (23) is provided with mounting holes (24) on both sides, and a second spring (25) is fixed inside the mounting holes (24).

4. The anti-jamming plunger slipper assembly according to claim 3, characterized in that: The end of the second spring (25) is fixed with a locking post (26), and the mounting frame (27) has locking slots (28) on both sides.

5. The anti-jamming plunger slipper assembly according to claim 4, characterized in that: The end of the locking pin (26) extends into the locking groove (28).

6. The anti-jamming plunger slipper assembly according to claim 1, characterized in that: It also includes an anti-jamming structure, which includes an oil reservoir (31), a rotating hole (34) and a rotating ball (35). The oil reservoir (31) is opened inside the slipper (11), the rotating hole (34) is opened on the inner wall of the slipper (11), and the rotating ball (35) is rotatably installed inside the rotating hole (34).

7. The anti-jamming plunger slipper assembly according to claim 6, characterized in that: A third oil injection hole (32) is provided above the oil storage tank (31), and a sealing plug (33) is inserted inside the third oil injection hole (32).

8. The anti-jamming plunger slipper assembly according to claim 7, characterized in that: The rotating ball (35) contacts the outer surface of the ball head (14), the oil reservoir (31) is filled with lubricating oil, and the third oil injection hole (32) is connected to the oil reservoir (31).

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