Assembly tool of hydraulic pump variable displacement mechanism

Abstract

The utility model relates to an assembly tool for a variable displacement mechanism of a hydraulic pump, which belongs to the technical field of plunger pump hydraulic products and comprises a base component capable of placing a swash plate and a pressing sleeve component capable of being sleeved with the variable displacement mechanism. The base assembly is provided with a positioning pin used for positioning a swash plate and jacking columns located at the two ends of the positioning pin and used for balancing and supporting the end of the swash plate. The pressing sleeve assembly comprises a pressing sleeve capable of being arranged on the periphery of the second cylindrical surface of the variable mechanism in a sleeving mode. The swash plate can be placed on the positioning pin and the top column, and the variable mechanism is pressed into the swash plate through the pressing sleeve. The variable mechanism assembling tool solves the problem that existing parts are not easy to assemble, is simple in structure, safe to operate, stable and reliable, is particularly suitable for batch variable mechanism assembling, and greatly improves assembling efficiency.

Description

Technical Field

[0001] The utility model relates to an assembly tool for a variable mechanism of a hydraulic pump, belonging to the technical field of plunger pump hydraulic products. Background Art

[0002] The plunger pump is one of the common types of hydraulic pumps and is a commonly used power component in industrial production processes. Mastering the correct assembly method can effectively ensure the stability and performance of the plunger pump.

[0003] like Figure 1 As shown in FIG. 1 , it is a schematic diagram of the structure of the variable mechanism of the hydraulic pump. The variable mechanism 11 is one of the core components of the plunger pump. The ball socket 13 on the variable mechanism 11 is required to be able to rotate flexibly relative to the ball head 14. Figure 2 As shown in the figure, it is a schematic diagram of the structure of the swash plate 12. The cylindrical surface 15 of the variable mechanism 11 and the swash plate 12 are interference fit. However, since the bottoms of both ends of the swash plate 12 are inclined structures, the swash plate 12 is easy to shake during assembly. Therefore, it is a difficult problem to install the variable mechanism 11 into the swash plate 12. In the current assembly, after the variable mechanism 11 is installed in the swash plate 12, the ball socket 13 on the variable mechanism 11 is easy to rotate relative to the ball head 14 and is not flexible. In addition, the cylindrical surface 16 of the variable mechanism 11 is easy to be damaged during the assembly process.

[0004] Therefore, it is urgent to design a tooling that is simple in structure, safe in operation, and applicable to batches of variable mechanisms installed in inclined plates. Utility Model Content

[0005] The technical problem to be solved by the utility model is: how to effectively solve the problem of installing the existing variable mechanism into the slant plate, so as to improve the assembly efficiency of the plunger pump.

[0006] In order to achieve the above-mentioned purpose, the technical solution of the utility model provides an assembly tool for a hydraulic pump variable mechanism, including a base assembly on which a swash plate can be placed, and a pressing sleeve assembly on which the variable mechanism can be mounted, the base assembly is provided with a locating pin for positioning the swash plate, and a top column located on both sides of the locating pin and used to balance and support the end of the swash plate, the pressing sleeve assembly includes a pressing sleeve that can be mounted on the two outer peripheries of the cylindrical surface of the variable mechanism; the swash plate can be placed on the locating pin and the top column, and the variable mechanism can be pressed into the swash plate through the pressing sleeve.

[0007] Preferably, the base assembly includes a base, the positioning pin is located in the middle of the base, and the top column is located at an end of the base.

[0008] Preferably, the base is penetrated by the bottom of the positioning pin and the bottom of the top column.

[0009] Preferably, the base and the positioning pin are clearance-fitted, and the base and the top column are interference-fitted.

[0010] Preferably, a first screw connected to the base is provided in the positioning pin.

[0011] Preferably, the top column is made of bearing steel.

[0012] Preferably, the bottom of the pressing sleeve is provided with a conical surface for pressing the variable mechanism.

[0013] Preferably, the inner hole of the pressing sleeve is a stepped hole structure.

[0014] Preferably, a positioning sleeve is provided on the outer periphery of the pressing sleeve.

[0015] Preferably, a second screw is transversely passed through the side surface of the positioning sleeve.

[0016] The utility model provides an assembly tool for a variable mechanism of a hydraulic pump. When the parts are ready, an oil press is used to press the upper end surface of a press sleeve to press the variable mechanism into a swash plate, thereby overcoming the problem that existing parts are difficult to assemble. The utility model has a simple structure, safe operation, stability and reliability, and is particularly suitable for batch assembly of variable mechanisms, thereby greatly improving assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural diagram of the variable mechanism of the hydraulic pump;

[0018] Figure 2 is a schematic diagram of the structure of the swash plate;

[0019] Figure 3 The utility model provides a structural schematic diagram of an assembly tool for a hydraulic pump variable mechanism.

[0020] Figure 4 It is a structural schematic diagram of the base assembly in the utility model;

[0021] Figure 5 It is a structural schematic diagram of the medium-pressure sleeve assembly of the utility model;

[0022] Figure 6 It is a structural schematic diagram of the medium-pressure sleeve of the utility model.

[0023] Figure numerals: 1. base assembly; 2. pressing sleeve assembly; 3. base; 4. top column; 5. first screw; 6. positioning pin; 7. pressing sleeve; 8. positioning sleeve; 9. second screw; 10. conical surface; 11. variable mechanism; 12. inclined plate; 13. ball socket; 14. ball head; 15. cylinder one; 16. cylinder two. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] The utility model embodiment discloses an assembly tool for a hydraulic pump variable mechanism, such as Figures 3 to 6 As shown, it includes a base assembly 1 and a pressing sleeve assembly 2.

[0026] The base assembly 1 includes a base 3, a positioning pin 6 for positioning the swash plate 12 is provided at the center of the base 3, and top columns 4 for balancing and supporting the swash plate 12 are provided at both ends of the base 3. The base 3 and the positioning pin 6 are clearance fit, and the two are connected by a first screw 5; the base 3 and the top column 4 are interference fit, and the material of the top column 4 is bearing steel.

[0027] The pressing sleeve assembly 2 includes a pressing sleeve 7, a positioning sleeve 8 and a second screw 9, and the positioning sleeve 8 is used to fix the pressing sleeve 7. The pressing sleeve 7 is a half structure, and a conical surface 10 for pressing the variable mechanism 11 is provided on the pressing sleeve 7. The inner hole of the pressing sleeve 7 is a step hole structure, and the step hole is used to fix the cylindrical surface 16 of the variable mechanism 11 to prevent the ball socket 13 from rotating around the ball head 14. The positioning sleeve 8 is provided with a threaded hole for assembling the second screw 9, which is convenient for fixing the variable mechanism 11 during assembly to prevent the parts from tilting.

[0028] The utility model provides an assembly tool for a hydraulic pump variable mechanism. When the parts are ready, an oil press is used to press the upper end surface of a press sleeve 7 to press the variable mechanism 11 into a swash plate 12, thereby overcoming the problem that existing parts are difficult to assemble. The utility model has a simple structure, safe operation, stability and reliability, and is particularly suitable for the assembly of batches of hydraulic pump variable mechanisms 11, thereby greatly improving the assembly efficiency.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembly tool for a variable displacement mechanism of a hydraulic pump, characterized in that: The invention comprises a base assembly (1) on which a swash plate (12) can be placed, and a pressing sleeve assembly (2) on which a variable mechanism (11) can be mounted. The base assembly (1) is provided with a positioning pin (6) for positioning the swash plate (12), and a top column (4) located on both sides of the positioning pin (6) and used for balancing and supporting the end of the swash plate (12). The pressing sleeve assembly (2) comprises a pressing sleeve (7) which can be mounted on the outer periphery of the second cylindrical surface (16) of the variable mechanism (11). The swash plate (12) can be placed on the positioning pin (6) and the top column (4), and the variable mechanism (11) can be pressed into the swash plate (12) through the pressing sleeve (7).

2. The assembly tool for a variable displacement mechanism of a hydraulic pump according to claim 1, characterized in that: The base assembly (1) comprises a base (3), the positioning pin (6) is located in the middle of the base (3), and the top column (4) is located at the end of the base (3).

3. The assembly tool for a hydraulic pump variable displacement mechanism according to claim 2, characterized in that: The base (3) is penetrated through the bottom of the positioning pin (6) and the bottom of the top column (4).

4. The assembly tool for a hydraulic pump variable displacement mechanism according to claim 3, characterized in that: The base (3) and the positioning pin (6) are clearance-fitted, and the base (3) and the top column (4) are interference-fitted.

5. The assembly tool for the variable displacement mechanism of a hydraulic pump according to claim 4, characterized in that: A first screw (5) connected to the base (3) is arranged inside the positioning pin (6).

6. The assembly tool for the variable displacement mechanism of a hydraulic pump according to claim 5, characterized in that: The material of the top column (4) is bearing steel.

7. The assembly tool for a hydraulic pump variable displacement mechanism according to claim 1, characterized in that: The bottom of the pressing sleeve (7) is provided with a conical surface (10) for pressing the variable mechanism (11).

8. The assembly tool for the variable displacement mechanism of a hydraulic pump according to claim 7, characterized in that: The inner hole of the pressing sleeve (7) is a stepped hole structure.

9. The assembly tool for the variable displacement mechanism of a hydraulic pump according to claim 8, characterized in that: The outer periphery of the pressing sleeve (7) is provided with a positioning sleeve (8).

10. An assembly tool for a variable displacement mechanism of a hydraulic pump according to claim 9, characterized in that: A second screw (9) is transversely passed through the side surface of the positioning sleeve (8).

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