Interference assembly structure for cylindrical parts

Abstract

An interference fit assembly structure for cylindrical parts. The utility model relates to an assembly structure for cylindrical parts. The purpose of the utility model is to solve the problem in the prior art that the inner layer parts are prone to large freedom of pressing direction during the assembly process of cylindrical parts, resulting in deformation of parts, scrapping, uncontrollable assembly process, and low assembly efficiency. It includes an upper pressure plate, a driving hydraulic pump, a pressure plate assembly, a base, and a plurality of base fixings; the upper pressure plate is fixedly mounted above the base through a plurality of base fixings, the fixed end of the driving hydraulic pump is fixedly mounted on the upper pressure plate, the working end of the driving hydraulic pump is fixedly connected to the pressure plate assembly, the pressure plate assembly is arranged below the driving hydraulic pump, a through hole is processed on the base, and the through hole of the base is arranged corresponding to the upper pressure plate assembly. The utility model belongs to the field of mechanical assembly.

Description

Technical Field

[0001] The utility model relates to a tube-type parts assembly structure, in particular to an interference assembly structure of tube-type parts. The utility model belongs to the field of mechanical assembly. Background Art

[0002] In the prior art, when the pre-welding assembly parts are connected by the bevel, the connection method is interference fit. Mechanical assembly is generally the last process link in the mechanical manufacturing process, and it can also be the pre-welding assembly link of welding parts. It will ultimately affect the quality of mechanical products. Interference fit uses the elasticity of the material to expand the hole. When the hole is restored, it will generate a clamping force on the shaft to connect the two parts.

[0003] The utility model relates to the assembly of interference sleeve parts, which is mainly used in the high-precision pre-welding assembly process. When the rigidity of the assembly parts is poor, the inner layer parts are prone to large freedom in the pressing direction during the assembly process, which leads to deformation of parts, scrapping, uncontrollable assembly process, low assembly efficiency and other problems. Therefore, it is necessary to provide an assembly device to solve the problems that are prone to occur during the assembly process. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the inner layer parts are prone to large freedom in the pressing direction during the assembly process of tubular parts, resulting in deformation and scrapping of parts, uncontrollable assembly process and low assembly efficiency, and further provide an interference assembly structure for tubular parts.

[0005] The technical solution of the utility model is:

[0006] An interference assembly structure for cylindrical parts, comprising an upper pressing plate, a driving hydraulic pump, a pressing plate assembly, a base and a plurality of base fixing parts;

[0007] The upper pressure plate is fixedly installed above the base through multiple base fixings, the fixed end of the driving hydraulic pump is fixedly installed on the upper pressure plate, the working end of the driving hydraulic pump is fixedly connected to the pressure plate assembly, the pressure plate assembly is arranged below the driving hydraulic pump, a through hole is processed on the base, and the through hole of the base is arranged corresponding to the upper pressure plate assembly.

[0008] Furthermore, the pressure plate assembly includes an outer fixed pressure plate and an inner expansion plate. The working end of the driving hydraulic pump is fixedly connected to the outer fixed pressure plate, and the inner expansion plate is fixedly installed on the lower end surface of the outer fixed pressure plate through a connecting column.

[0009] Furthermore, the outer fixed pressure plate and the inner expansion plate are arranged in parallel, and the inner expansion plate is arranged perpendicular to the telescopic direction of the working end of the driving hydraulic pump.

[0010] Furthermore, the inner expansion plate is a circular plate body, the through hole of the base is a circular through hole, and the center line of the inner expansion plate is arranged to coincide with the center line of the circular through hole on the base.

[0011] Furthermore, the outer fixed pressure plate of the pressure plate assembly is installed on the fixed end of the driving hydraulic pump by means of a bolt-removable connection.

[0012] Furthermore, the number of the base fixing members is four, and the upper pressing plate is fixedly mounted on the base through the four base fixing members.

[0013] Compared with the prior art, the utility model has the following effects:

[0014] 1. The use of the assembly structure of the present application for interference assembly can ensure good component quality stability and high pass rate, and can effectively shorten the assembly cycle and improve production efficiency.

[0015] 2. Use a hydraulic pump station with stable mechanical assembly force, which provides stable assembly force through the hydraulic pump to ensure assembly accuracy and efficiency.

[0016] 3. The present application can be quickly assembled and the assembly parts can be removed; the general tooling part and the centering tooling can be designed according to the product size, and the pressure of the hydraulic pump station can be selected according to the characteristics of the assembly parts, thereby ensuring that the present utility model has good versatility.

[0017] 4. The assembly structure of the present application ensures the assembly accuracy and product quality, and can be extended to the assembly of interference-fit cylindrical parts and pre-welding assembly processes. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is the overall structural front view of the utility model;

[0019] Figure 2 It is a top view of four base fixing members 5 fixedly installed on the base 4 in the present application. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0021] Specific implementation method 1: Combination Figure 1-Figure 2 The present embodiment is described as an interference fit structure for a cylindrical part, which comprises an upper pressing plate 1, a driving hydraulic pump 2, a pressing plate assembly 3, a base 4 and a plurality of base fixing members 5;

[0022] The upper pressure plate 1 is fixedly installed above the base 4 through multiple base fixing parts 5. The fixed end of the driving hydraulic pump 2 is fixedly installed on the upper pressure plate 1. The working end of the driving hydraulic pump 2 is fixedly connected to the pressure plate assembly 3. The pressure plate assembly 3 is arranged below the driving hydraulic pump 2. A through hole is processed on the base 4, and the through hole of the base 4 is arranged corresponding to the upper pressure plate assembly 3.

[0023] In this embodiment, the upper pressure plate 1 is used to fix the driving hydraulic pump 2. The specifications of the driving hydraulic pump 2 are selected according to the assembly requirements. The pressure plate assembly 3 ensures that the cylindrical parts are properly fitted when being assembled in the vertical direction.

[0024] Specific implementation method 2: Combination Figure 1-Figure 2 This embodiment is described as an interference fit structure for cylindrical parts. The pressure plate assembly 3 includes an outer fixed pressure plate and an inner expansion plate. The working end of the driving hydraulic pump 2 is fixedly connected to the outer fixed pressure plate. The inner expansion plate is fixedly mounted on the lower end surface of the outer fixed pressure plate through a connecting column. Other components and connection relationships are the same as those of the first embodiment.

[0025] In this embodiment, the inner expansion plate is extended into the inner side wall of the top of the inner cylinder, and the bottom of the outer cylinder is inserted into the through hole of the base 4 for pre-assembly, thereby ensuring the coaxiality of the inner cylinder and the outer cylinder in interference fit.

[0026] Specific implementation method three: Combination Figure 1-Figure 2 This embodiment is described as an interference fit structure for cylindrical parts, in which the outer fixed pressure plate and the inner expansion plate are arranged in parallel, and the inner expansion plate is arranged perpendicular to the telescopic direction of the working end of the driving hydraulic pump 2. Other components and connection relationships are the same as those of the second embodiment.

[0027] Specific implementation method four: Combination Figure 1-Figure 2 This embodiment is described as an interference fit structure for cylindrical parts. The inner expansion plate is a circular plate, the through hole of the base 4 is a circular through hole, and the center line of the inner expansion plate coincides with the center line of the circular through hole on the base 4. Other components and connection relationships are the same as those of the first embodiment.

[0028] Specific implementation method five: Combination Figure 1-Figure 2 This embodiment is described as an interference fit structure for a cylindrical part. The outer fixed pressure plate of the pressure plate assembly 3 is detachably connected and installed on the fixed end of the driving hydraulic pump 2 by bolts. Other components and connection relationships are the same as those of the first embodiment.

[0029] Specific implementation method six: Combination Figure 1-Figure 2 This embodiment is described as an interference fit structure for a cylindrical part. The number of the base fixing members 5 is four, and the upper pressing plate 1 is fixedly mounted on the base 4 through the four base fixing members 5. The other components and connection relationships are the same as those of the first embodiment.

[0030] When the present application is working, the inner expansion plate is extended into the inner wall of the top of the inner cylinder, and the bottom of the outer cylinder is inserted into the through hole of the base 4 for pre-assembly to ensure the coaxiality of the inner cylinder and the outer cylinder of the interference fit. The purpose of the present application is achieved by driving the hydraulic pump 2 to press downward and assembling the two assembly parts in a vertical direction through an external fixed pressure plate for interference fit.

[0031] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described here, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. An interference fit structure for cylindrical parts, characterized in that: It comprises an upper pressure plate (1), a driving hydraulic pump (2), a pressure plate assembly (3), a base (4) and a plurality of base fixing parts (5); The upper pressure plate (1) is fixedly mounted above the base (4) via a plurality of base fixing members (5); the fixed end of the driving hydraulic pump (2) is fixedly mounted on the upper pressure plate (1); the working end of the driving hydraulic pump (2) is fixedly connected to the pressure plate assembly (3); the pressure plate assembly (3) is arranged below the driving hydraulic pump (2); a through hole is machined on the base (4), and the through hole of the base (4) is arranged correspondingly to the upper pressure plate assembly (3).

2. According to claim 1, the interference fit structure for cylindrical parts is characterized in that: The pressure plate assembly (3) comprises an outer fixed pressure plate and an inner expansion plate. The working end of the driving hydraulic pump (2) is fixedly connected to the outer fixed pressure plate, and the inner expansion plate is fixedly mounted on the lower end surface of the outer fixed pressure plate via a connecting column.

3. According to claim 2, the interference fit structure for cylindrical parts is characterized in that: The outer fixed pressure plate and the inner expansion plate are arranged in parallel, and the inner expansion plate is arranged perpendicularly to the telescopic direction of the working end of the driving hydraulic pump (2).

4. The interference fit structure for cylindrical parts according to claim 1, characterized in that: The inner expansion plate is a circular plate body, the through hole of the base (4) is a circular through hole, and the center line of the inner expansion plate is arranged to coincide with the center line of the circular through hole on the base (4).

5. The interference fit structure for cylindrical parts according to claim 1, characterized in that: The outer fixed pressure plate of the pressure plate assembly (3) is installed on the fixed end of the driving hydraulic pump (2) by means of a bolt-disassembled connection.

6. The interference fit structure for cylindrical parts according to claim 1, characterized in that: The number of the base fixing members (5) is four, and the upper pressing plate (1) is fixedly mounted on the base (4) via the four base fixing members (5).

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