A plunger ring press-fitting tool for a hydraulic pump

Abstract

This utility model discloses a plunger ring press-fitting fixture for a hydraulic pump, relating to the field of plunger ring press-fitting technology. The utility model includes a base, with a column fixedly connected to the top of the base. A controller is mounted on the front of the column, and an electric push rod is fixedly connected to the top of the column. It also includes a press-fitting mechanism, which is located on the top of the base and includes a fixed column fixedly connected to the top of the base. Specifically, the plunger rod is first inserted into the bottom of the threaded ring, and the internal thread handle is rotated clockwise to push the clamping block to clamp and fix the plunger rod. Then, the plunger ring is placed on the outside of three arc-shaped support plates. The push block moves upward, pushing the three arc-shaped support plates, thereby opening the plunger ring for press-fitting. At this point, both the plunger rod and the plunger ring are fixed, resulting in greater stability during press-fitting, preventing slippage, and improving safety.

Description

Technical Field

[0001] This utility model belongs to the field of plunger ring press-fitting technology, and in particular relates to a plunger ring press-fitting tool for hydraulic pumps. Background Technology

[0002] A hydraulic pump plunger ring press-fitting fixture is a specialized piece of equipment or fixture system designed for the precise and efficient installation of plunger rings (also known as piston rings) onto the plungers of a hydraulic pump.

[0003] Traditional press-fitting equipment typically places the plunger ring directly on the worktable and mates the plunger rod with it. The plunger rod is then pushed using hydraulic or electric actuators, which squeezes and expands the plunger ring to perform the press-fitting process. However, in this method, both the plunger ring and the plunger rod are in a loose state. During the press-fitting process, both need to be supported, which can easily lead to slippage. This not only easily damages both but also poses a risk of injury to workers. Utility Model Content

[0004] The purpose of this utility model is to provide a plunger ring press-fitting fixture for hydraulic pumps. By setting up a press-fitting mechanism, specifically, the plunger rod is first inserted into the bottom of the threaded ring, and the internal thread handle is rotated clockwise to push the clamping block to hold and fix the plunger rod. Then, the plunger ring is placed on the outside of three arc-shaped support plates. By moving the push block upwards, the three arc-shaped support plates are pushed, thereby opening the plunger ring for press-fitting. At this time, both the plunger rod and the plunger ring are fixed, which makes the press-fitting process more stable, avoids slippage, and improves safety. This solves the problem that in traditional press-fitting equipment, both the plunger ring and the plunger rod are in a loose state during press-fitting, requiring support during the process, which easily leads to slippage.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a plunger ring press-fitting fixture for a hydraulic pump, comprising a base, a column fixedly connected to the top of the base, a controller mounted on the front of the column, and an electric push rod fixedly connected to the top of the column, and further comprising: A pressing mechanism, wherein the pressing mechanism is disposed on the top of the base, the pressing mechanism includes a fixed column fixedly connected to the top of the base, an electric push rod two fixedly connected to the bottom inner side of the fixed column, a push block fixedly connected to the top output end of the electric push rod two, a plurality of arc-shaped support plates disposed inside the fixed column, and a plunger ring sleeved on the outer side of the arc-shaped support plates; and A clamping mechanism is located directly above the pressing mechanism. The clamping mechanism includes a circular fixing block fixedly connected to an output end of an electric push rod. A threaded ring is fixedly connected to the bottom of the circular fixing block, and a plunger rod is inserted into the threaded ring. The bottom of the arc-shaped support plate is conical on the side facing the pusher, and the top of the pusher is also conical. The conical surface on the pusher contacts the conical surface at the bottom of the arc-shaped support plate, and the pusher is used to push several arc-shaped support plates to expand.

[0006] Furthermore, a sliding rod is fixedly connected to the outer side of the arc-shaped support plate. The sliding rod slides through the fixed column and extends to the outside. A limit ring is fixedly connected to the outer surface of the sliding rod, and a spring is sleeved on the outer side of the sliding rod. When the arc-shaped support plate moves, it drives the sliding rod to slide inside the fixed column, and the limit ring will squeeze the spring, which facilitates subsequent return to its original position by elastic force. The limiting ring is used to limit the movement distance of the arc-shaped support plate, and both the limiting ring and the spring are disposed inside the fixed column.

[0007] Furthermore, a limiting plate is fixedly connected to the center of the outer side of the arc-shaped support plate. The limiting plate slides through the fixed column and extends to the outside. The limiting plate is used to limit the arc-shaped support plate. One end of the spring is fixedly connected to the surface of the limiting ring, and the other end of the spring is fixedly connected to the inner wall of the fixed column. The limiting plate is used to limit the movement of the arc-shaped support plate, so that the arc-shaped support plate moves in a straight line.

[0008] Furthermore, a positioning plate is provided above the limiting plate, a push plate is fixedly connected to the top of the positioning plate, and a square slide rod is fixedly connected to the bottom of the positioning plate. A second spring is sleeved on the outside of the square slide rod. When the positioning plate is pulled, the second spring will be stretched, which facilitates the subsequent downward reset of the positioning plate by the elastic force. The positioning plate on the two arc-shaped support plates on the left is fixedly connected to the surface of the arc-shaped support plates, while the positioning plate on the right is slidably connected to the arc-shaped support plate on the right.

[0009] Furthermore, the square sliding rod slides through the limiting plate and extends to the outside. The top of the second spring is fixedly connected to the bottom of the positioning plate, and the bottom of the second spring is fixedly connected to the top of the limiting plate. The square sliding rod is square in shape and is used to limit the positioning plate. The positioning plate is used to support and position the plunger ring. The push plate is L-shaped. Because the push plate is L-shaped, it is convenient for the operator to exert force, so as to push the push plate smoothly.

[0010] Furthermore, several clamping blocks are fixedly connected to the bottom of the threaded ring, and an internal threaded handle is threadedly connected to the outer side of the threaded ring. The side of the clamping block facing the inner wall of the internal threaded handle is set with an inclined surface. The inclined surface on the clamping block contacts the bottom inner side of the internal threaded handle, and the inner side of the clamping block contacts the outer surface of the plunger rod. When the internal threaded handle is rotated clockwise, the internal threaded handle will move upward. When the bottom inner side of the internal threaded handle contacts the clamping block, it will push the clamping block to contact the surface of the plunger rod. Then, by continuously rotating the internal threaded handle, the clamping block will clamp and fix the plunger rod.

[0011] This utility model has the following beneficial effects: This invention employs a pressing mechanism. Specifically, the plunger rod is first inserted into the bottom of the threaded ring, and the internal thread handle is rotated clockwise to push the clamping block to hold and fix the plunger rod. Then, the plunger ring is placed on the outside of three arc-shaped support plates. By moving the push block upward, the three arc-shaped support plates are pushed, thereby opening the plunger ring for pressing. At this point, both the plunger rod and the plunger ring are fixed, which makes the pressing process more stable, avoids slippage, and improves safety.

[0012] This utility model uses a push plate. Specifically, after the mounting groove on the plunger rod moves to the top of the arc-shaped support plate, the operator pulls the push plate to move the positioning plate upward. The positioning plate then moves the plunger ring upward. When the plunger ring moves onto the plunger rod, it enters the mounting groove, thus completing the installation of the plunger ring. This method can quickly complete the press-fitting work and is simple and convenient to operate.

[0013] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0014] 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.

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal cross-sectional structure of the fixing column of this utility model; Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle; Figure 4 This is a schematic diagram of the top structure of the fixed column of this utility model; Figure 5This is a front view cross-sectional structural diagram of the threaded ring of this utility model.

[0016] The attached diagram lists the components represented by each number as follows: 1. Base; 11. Column; 12. Controller; 13. Electric push rod one; 2. Pressing mechanism; 21. Fixed column; 22. Electric push rod two; 221. Push block; 23. Arc-shaped support plate; 231. Slide rod; 232. Limiting ring; 233. Spring one; 24. Plunger ring; 25. Positioning plate; 251. Push plate; 252. Square slide rod; 253. Spring two; 26. Limiting plate; 3. Clamping mechanism; 31. Circular fixing block; 32. Threaded ring; 33. Plunger rod; 34. Clamping block; 35. Internal threaded throttle. Detailed Implementation

[0017] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figures 1-5 As shown, this utility model is a plunger ring press-fitting fixture for a hydraulic pump, including a base 1, a column 11 fixedly connected to the top of the base 1, a controller 12 mounted on the front of the column 11, and an electric push rod 13 fixedly connected to the top of the column 11. It also includes: The pressing mechanism 2 is located on the top of the base 1. The pressing mechanism 2 includes a fixed column 21 fixedly connected to the top of the base 1. An electric push rod 22 is fixedly connected to the bottom inner side of the fixed column 21. A push block 221 is fixedly connected to the top output end of the electric push rod 22. Several arc-shaped support plates 23 are arranged inside the fixed column 21, and plunger rings 24 are sleeved on the outer sides of the arc-shaped support plates 23. First, the plunger rod 33 is inserted from the bottom of the threaded ring 32, and the internal thread handle 35 is rotated clockwise to push the clamping block 34 to clamp and fix the plunger rod 33. Then, the plunger ring 24 is sleeved on the outer side of the three arc-shaped support plates 23. The push block 221 moves upward, pushing the three arc-shaped support plates 23, thereby opening the plunger ring 24, allowing for pressing. At this time, both the plunger rod 33 and the plunger ring 24 are fixed, ensuring greater stability during pressing, preventing slippage, and improving safety. The clamping mechanism 3 is located directly above the pressing mechanism 2. The clamping mechanism 3 includes a circular fixing block 31 fixedly connected to the output end of the electric push rod 13. A threaded ring 32 is fixedly connected to the bottom of the circular fixing block 31, and a plunger rod 33 is inserted inside the threaded ring 32. The bottom of the arc-shaped support plate 23 is set with a conical surface on the side facing the push block 221, and the top of the push block 221 is set with a conical surface. The conical surface on the push block 221 contacts the conical surface at the bottom of the arc-shaped support plate 23. The push block 221 is used to push several arc-shaped support plates 23 to expand.

[0019] A sliding rod 231 is fixedly connected to the outer side of the arc-shaped support plate 23. The sliding rod 231 slides through the fixed column 21 and extends to the outside. A limit ring 232 is fixedly connected to the outer surface of the sliding rod 231. A spring 233 is sleeved on the outer side of the sliding rod 231. The limit ring 232 is used to limit the movement distance of the arc-shaped support plate 23. Both the limit ring 232 and the spring 233 are located inside the fixed column 21. A limit plate 26 is fixedly connected to the center of the outer side of the arc-shaped support plate 23. The limit plate 26 slides through the fixed column 21 and extends to the outside. The limit plate 26 is used to limit the arc-shaped support plate 23. One end of the spring 233 is fixedly connected to the surface of the limit ring 232, and the other end of the spring 233 is fixedly connected to the inner wall of the fixed column 21. A positioning plate is provided above the limit plate 26. 25. A push plate 251 is fixedly connected to the top of the positioning plate 25, and a square slide rod 252 is fixedly connected to the bottom of the positioning plate 25. A spring 253 is sleeved on the outside of the square slide rod 252. When the mounting groove on the plunger rod 33 moves to the top of the arc-shaped support plate 23, the operator pulls the push plate 251 to move the positioning plate 25 upward. The positioning plate 25 then moves the plunger ring 24 upward. When the plunger ring 24 moves onto the plunger rod 33, it will enter the mounting groove, thus completing the installation of the plunger ring 24. This method can quickly complete the press-fitting work and is simple and convenient to operate. The positioning plates 25 on the two arc-shaped support plates 23 on the left are fixedly connected to the surface of the arc-shaped support plates 23, and the positioning plate 25 on the right is slidably connected to the arc-shaped support plate 23 on the right.

[0020] The square slide rod 252 slides through the limiting plate 26 and extends to the outside. The top of the second spring 253 is fixedly connected to the bottom of the positioning plate 25, and the bottom of the second spring 253 is fixedly connected to the top of the limiting plate 26. The square slide rod 252 is square in shape and is used to limit the positioning plate 25. The positioning plate 25 is used to support and position the plunger ring 24. The push plate 251 is L-shaped.

[0021] Several clamping blocks 34 are fixedly connected to the bottom of the threaded ring 32. An internal threaded handle 35 is threadedly connected to the outside of the threaded ring 32. The side of the clamping block 34 facing the inner wall of the internal threaded handle 35 is set with an inclined surface. The inclined surface on the clamping block 34 contacts the bottom of the inner side of the internal threaded handle 35. The inner side of the clamping block 34 contacts the outer surface of the plunger rod 33.

[0022] One specific application of this embodiment is: In use, first insert the plunger rod 33 into the bottom of the threaded ring 32. Then, rotate the internal thread handle 35 clockwise. The internal thread handle 35 will move upward. When the inner bottom of the internal thread handle 35 contacts the clamping block 34, it will push the clamping block 34 to contact the surface of the plunger rod 33. Then, by continuously rotating the internal thread handle 35, the clamping block 34 will clamp and fix the plunger rod 33, thus completing the installation of the plunger rod 33. Then, put the plunger ring 24 on the outside of the three arc-shaped support plates 23, and the bottom of the plunger ring 24 is flush with the outside of the support plates 22. The positioning plate 25 contacts, thus supporting the plunger ring 24. Then, the controller 12 controls the second electric push rod 22 to start, which in turn drives the push block 221 to move upwards. The push block 221 simultaneously pushes the three arc-shaped support plates 23, causing them to expand. At this time, the plunger ring 24 is opened, and the arc-shaped support plates 23 drive the sliding rod 231 to slide within the fixed post 21. Simultaneously, the limiting ring 232 compresses the first spring 233, and the arc-shaped support plates 23 drive the limiting plate 26 to slide on the fixed post 21, causing the arc-shaped support plates 23 to move in a straight line. After the plunger ring 24 is opened, the controller 12 controls the electric push rod 13 to start. The electric push rod 13 drives the circular fixed block 31 to move downward, so that the plunger rod 33 is inserted into the arc-shaped support plate 23, and the mounting groove on the plunger rod 33 moves to the top position of the arc-shaped support plate 23. Then the electric push rod 13 stops, and the controller 12 controls the electric push rod 22 to drive the push block 221 to return downward. At this time, the arc-shaped support plate 23 will return and retract due to the elastic force of the spring 233, so the plunger ring 24 is reduced in the opened position. With force, the staff pulls the push plate 251 to move the positioning plate 25 upward, which in turn moves the plunger ring 24 upward. At the same time, the square slide rod 252 slides on the limit plate 26 and stretches the spring 253. When the plunger ring 24 moves onto the plunger rod 33, it will enter the installation groove, thus completing the installation of the plunger ring 24. Finally, the controller 12 starts the electric push rod 13 to drive the circular fixing block 31 to reset upward, which allows the internal thread handle 35 to be rotated counterclockwise, releasing the plunger rod 33 and allowing it to be removed.

[0023] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] 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 present 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 the present 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. A plunger ring press fitting tool for hydraulic pumps, comprising a base (1), a vertical column (11) fixedly connected to the top of the base (1), a controller (12) installed on the front of the vertical column (11), and an electric push rod one (13) fixedly connected to the top of the vertical column (11), characterized in that, Also includes: A pressing mechanism (2) is provided on the top of the base (1). The pressing mechanism (2) includes a fixed column (21) fixedly connected to the top of the base (1). An electric push rod (22) is fixedly connected to the bottom inner side of the fixed column (21). A push block (221) is fixedly connected to the top output end of the electric push rod (22). Several arc-shaped support plates (23) are provided inside the fixed column (21). A plunger ring (24) is sleeved on the outer side of the arc-shaped support plate (23). The clamping mechanism (3) is located directly above the pressing mechanism (2). The clamping mechanism (3) includes a circular fixing block (31) fixedly connected to the output end of the electric push rod (13). A threaded ring (32) is fixedly connected to the bottom of the circular fixing block (31). A plunger rod (33) is inserted inside the threaded ring (32). The bottom of the arc-shaped support plate (23) facing the push block (221) is set with a conical surface, the top of the push block (221) is set with a conical surface, the conical surface on the push block (221) is in contact with the conical surface at the bottom of the arc-shaped support plate (23), and the push block (221) is used to push several arc-shaped support plates (23) to expand.

2. The plunger ring press-fitting fixture for a hydraulic pump according to claim 1, characterized in that, A sliding rod (231) is fixedly connected to the outside of the arc-shaped support plate (23). The sliding rod (231) slides through the fixed column (21) and extends to the outside. A limit ring (232) is fixedly connected to the outer surface of the sliding rod (231). A spring (233) is sleeved on the outside of the sliding rod (231). The limiting ring (232) is used to limit the movement distance of the arc-shaped support plate (23). The limiting ring (232) and the spring (233) are both located inside the fixed column (21).

3. The plunger ring press-fitting fixture for a hydraulic pump according to claim 2, characterized in that, A limiting plate (26) is fixedly connected to the center of the outer side of the arc-shaped support plate (23). The limiting plate (26) slides through the fixed column (21) and extends to the outside. The limiting plate (26) is used to limit the arc-shaped support plate (23). One end of the spring (233) is fixedly connected to the surface of the limiting ring (232), and the other end of the spring (233) is fixedly connected to the inner wall of the fixed column (21).

4. The plunger ring press-fitting fixture for a hydraulic pump according to claim 3, characterized in that, A positioning plate (25) is provided above the limiting plate (26). A push plate (251) is fixedly connected to the top of the positioning plate (25). A square slide rod (252) is fixedly connected to the bottom of the positioning plate (25). A spring (253) is sleeved on the outside of the square slide rod (252). Among them, the positioning plate (25) on the two arc-shaped support plates (23) on the left is fixedly connected to the surface of the arc-shaped support plate (23), and the positioning plate (25) on the right is slidably connected to the arc-shaped support plate (23) on the right.

5. The plunger ring press-fitting fixture for a hydraulic pump according to claim 4, characterized in that, The square slide bar (252) slides through the limiting plate (26) and extends to the outside. The top of the second spring (253) is fixedly connected to the bottom of the positioning plate (25), and the bottom of the second spring (253) is fixedly connected to the top of the limiting plate (26). The square slide bar (252) is square in shape and is used to limit the positioning plate (25).

6. The plunger ring press-fitting fixture for a hydraulic pump according to claim 5, characterized in that, The positioning plate (25) is used to support and position the plunger ring (24), and the push plate (251) is L-shaped.

7. The plunger ring press-fitting fixture for a hydraulic pump according to claim 2, characterized in that, The bottom of the threaded ring (32) is fixedly connected to several clamping blocks (34). The outer side of the threaded ring (32) is threadedly connected to an internal threaded throttle (35). The side of the clamping block (34) facing the inner wall of the internal threaded throttle (35) is set with an inclined surface. The inclined surface on the clamping block (34) contacts the bottom of the inner side of the internal threaded throttle (35). The inner side of the clamping block (34) contacts the outer surface of the plunger rod (33).

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