Tool for dismounting and mounting shaft sleeve and pin shaft

Abstract

The utility model provides a dismounting and mounting tool for a shaft sleeve pin shaft, which belongs to the technical field of pin shaft assembly and comprises a base, at least two supporting columns are arranged above the base, a base plate is mounted at the upper ends of all the supporting columns, and a through hole is formed in the middle of the base plate in a penetrating manner; stand columns are arranged on the left side and the right side of the base plate, a supporting plate is jointly installed at the upper ends of all the stand columns, a vertical hole penetrates through the middle of the supporting plate, an action oil cylinder is installed at the upper end of the supporting plate, an oil nozzle of the action oil cylinder communicates with a hydraulic pump through a hydraulic oil way, and a piston rod of the action oil cylinder extends to the position below the supporting plate through the vertical hole. A pressing block is arranged at the end of the piston rod. The problems of large manpower consumption, many potential safety hazards and low dismounting and mounting efficiency in the operation process can be solved, the mounting quality can be improved, and parts are prevented from being damaged.

Description

TECHNICAL FIELD

[0001] The utility model belongs to pin shaft assembly technical field, concretely relates to a shaft sleeve pin shaft dismounting and installation tool. BACKGROUND

[0002] Interference fit is a common connection form in mechanical equipment, mainly applied in heavy machinery, hoisting machinery, ships, locomotives and general machinery and other fields, especially in occasions needing to bear large torque, axial force or both composite load.

[0003] At present, although the application of interference fit technology in mechanical parts ensures the stable connection between parts, it brings challenges in dismounting and installation when maintaining due to its tight assembly design. In the traditional method, technicians rely on basic tools such as copper bars and hammers to complete the dismounting and mounting work of parts through knocking. However, this method is not only inefficient, time-consuming and laborious, but also has a huge safety hazard. Specifically, since it will produce vibration and impact force during knocking, if not properly controlled, it is easy to cause accidental injury to the operator, and may also cause damage to the surrounding environment and equipment; and more seriously, the traditional knocking installation method lacks precision, often causing unnecessary deformation of parts and pins. Such deformation not only reduces the original performance of the parts, but also may cause improper clearance after assembly, affecting the stable operation of the equipment.

[0004] Therefore, exploring and applying more scientific and efficient interference fit part installation technology is of great significance to improve the level of mechanical maintenance and ensure the stable operation of equipment. CONTENT OF THE UTILITY MODEL

[0005] The technical problem solved by the utility model is to provide a shaft sleeve pin shaft dismounting and installation tool, which can not only solve the problems of high labor consumption, many safety hazards and low dismounting and mounting efficiency in the operation process, but also improve the installation quality and avoid damage to parts.

[0006] In order to solve the above technical problems, the utility model provides a technical scheme that a shaft sleeve pin shaft dismounting and mounting tool, it includes the base, the upper of base is provided with at least two struts, the upper end of all struts is jointly installed with a lagging, the middle part of lagging is penetrated with through -hole, lagging's left and right sides are all provided with the stand, the upper end of all stands is jointly installed with a support plate, the middle part of support plate is penetrated with vertical hole, the upper end of support plate is installed with action oil cylinder, the oil nozzle of action oil cylinder is communicated with hydraulic pump through hydraulic oil circuit, the piston rod of action oil cylinder is through vertical hole and extends to the below of support plate, and the end of piston rod is provided with the pressure block. Based on this, when using the utility model to adopt the pin shaft, shaft sleeve and so on of excess connection to carry out dismounting or installation action, it can first place the workpiece on the upper of lagging, and make the shaft hole of workpiece and through -hole alignment, then control hydraulic pump and inject hydraulic oil into action oil cylinder, so as to drive piston rod to extend downwards, and in this process, corresponding pin shaft or shaft sleeve is pressed down by pressure block, until the component reaches the specified position, that is, the pressure can be stopped, and the corresponding installation action or dismounting action is completed.

[0007] Further, the shape of the pressure block is inverted T-shaped, and the outer side of the pressure block is sequentially sleeved with an auxiliary plate and a spring one from top to bottom. The two ends of the auxiliary plate are provided with sliding holes, and the auxiliary plate is vertically slidably installed on the stands on both sides of the lagging through the sliding holes. The upper surface of the auxiliary plate abuts against the end surface of the piston rod of the action oil cylinder, and the lower surface of the auxiliary plate abuts against the spring one. In this way, when the piston rod of the action oil cylinder extends, the piston rod drives the pressure block to press down the component to be dismounted or installed on one hand, and drives the auxiliary plate to move downward on the other hand. In the process of moving downward, the auxiliary plate is vertically slidably matched with the stands on both sides to ensure that the piston rod always moves linearly in the vertical direction without deviation and danger.

[0008] Further, the outer side of the stand is sleeved with a spring two, and the lower surface of the auxiliary plate can abut against the spring two. When the piston rod of the action oil cylinder extends to perform the pressing action, the auxiliary plate extrudes the spring two to make the spring two compressively deform. When the action oil cylinder ends the pressing action and releases the hydraulic oil circuit on-off switch, the spring two can help the piston rod of the action oil cylinder to reset by the elastic force of the spring two. It should be noted that the action oil cylinder is a single-acting oil cylinder, and the structure can be omitted when a double-acting oil cylinder is used.

[0009] Further, at least one variable diameter sleeve is further included, the variable diameter sleeve can be sleeved on the outside of the pressing block; when the variable diameter sleeve is sleeved on the outside of the pressing block, and the end of the variable diameter sleeve close to the action oil cylinder abuts against the auxiliary plate, the end of the variable diameter sleeve away from the action oil cylinder is flush with the bottom end of the pressing block. In this way, when the shaft sleeve to be disassembled or installed is large in diameter, the variable diameter sleeve corresponding in size to the shaft sleeve can be sleeved on the outside of the pressing block by friction, or the variable diameter sleeve corresponding in size is directly placed above the shaft sleeve to be disassembled or installed, and the pressure is transmitted to the shaft sleeve to be disassembled or installed through the variable diameter sleeve, so as to adapt to the disassembly and assembly requirements of shaft sleeves of different sizes.

[0010] Further, the upper end of the support column is fixed with a plug rod, and the edge of the backing plate is provided with a mounting hole, which can be inserted with the corresponding plug rod to install the backing plate above the support column. In this way, since the backing plate in the utility model is detachably installed, backing plates with different through hole sizes can be flexibly selected according to the size of the component to be disassembled or installed, so as to meet the disassembly and assembly requirements of the pin shaft and shaft sleeve of various workpieces. In addition, a conventional detachable connection structure such as a bolt connection can also be used.

[0011] Further, the front side and / or the rear side of the backing plate is provided with an auxiliary support column, and the component to be disassembled or installed is supported through the auxiliary support column, so as to reduce the labor intensity of the workers, and the variable diameter sleeve can be sleeved thereon when the carrying equipment is carried, so as to prevent the variable diameter sleeve from rolling.

[0012] Further, the hydraulic pump is a manual hydraulic pump, which can ensure that the workers can flexibly control the pressure of the action oil cylinder.

[0013] From the above technical solutions, it can be seen that the utility model has the following advantages:

[0014] 1. The utility model can be applied to the scenes of transmission shaft, lower support arm, steering sleeve, oil seal installation and the like, and fully solves the risks and disadvantages of the previous sledge hammer and copper bar installation; moreover, the utility model is easy to use in equipment maintenance, improves the maintenance efficiency and quality, eliminates the safety hazards, improves the safety of operation, and effectively solves the difficulty of disassembly and installation of interference fit components in maintenance work;

[0015] 2. The utility model can ensure that the pressing block and the variable diameter sleeve accurately transmit the downward pressure to the component to be disassembled or installed through the sliding cooperation of the auxiliary plate and the stand column, and the cooperation of the pressing block and the detachable variable diameter sleeve and the detachable backing plate, so as to ensure the installation quality and avoid damage to other parts of the component;

[0016] 3. The utility model can simplify the structure of the action oil cylinder and the hydraulic pump through the setting of the spring two, so that a single-acting oil cylinder can be directly used, thereby reducing the production cost;

[0017] 4. This utility model can support the parts to be disassembled or installed by setting auxiliary support columns on the front and / or rear sides of the pad, thereby reducing the labor intensity of the workers. At the same time, when moving the equipment, the reducing sleeve can be put on it to prevent the reducing sleeve from rolling. Attached Figure Description

[0018] To more clearly illustrate the technical solution of this utility model, the drawings used in the description 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 structural schematic diagram of a specific embodiment of the present utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the present invention when it is in working condition.

[0021] In the diagram: 1. Base; 2. Through hole; 3. Auxiliary support column; 4. Support column; 5. Pad plate; 6. Insert rod; 7. Hydraulic pump; 8. Column; 9. Locking nut; 10. Actuating cylinder; 11. Piston rod; 12. Spring 1; 13. Auxiliary plate; 14. Pressure block; 15. Spring 2; 16. Workpiece; 17. Variable diameter sleeve. Detailed Implementation

[0022] 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.

[0023] like Figure 1 , Figure 2 As shown, this utility model provides a tool for disassembling and installing bushing pins, which includes a base 1. At least two support columns 4 are arranged on the top of the base 1. A pad 5 is installed on the upper end of all the support columns 4, and the installation method between the pad 5 and the support columns 4 is preferably a detachable installation method. Specifically, in this embodiment, a fixed insertion rod 6 can be welded to the upper end of the support column 4, and an installation hole is provided on the edge of the pad 5, so that the installation hole can be inserted into the corresponding insertion rod 6 to install the pad 5 on the top of the support column 4. In this way, since the pad 5 in this utility model adopts a detachable installation structure, pads 5 with different through hole sizes 2 can be flexibly selected according to the size of the parts to be disassembled or installed, so as to meet the disassembly and installation requirements of pins and bushings of various workpieces 16.

[0024] The middle part of the base plate 5 is provided with a through hole 2, and the disassembled pin shaft, shaft sleeve and the like can be successfully dropped to the lower side of the base plate 5 through the through hole 2. The left and right sides of the base plate 5 are provided with a stand column 8, and the upper ends of the two stand columns 8 are jointly provided with a support plate, and the mounting mode of the support plate is preferably an adjustable mounting mode. Specifically, in the embodiment, an external thread section is arranged at the upper end of the stand column 8, and mounting holes are arranged at the two ends of the support plate. First, a lock nut 9 is threadedly connected to the external thread section of each of the two stand columns 8. Then, the support plate is slidably mounted on the two stand columns 8 through the mounting holes. Finally, the two lock nuts 9 are threadedly connected to the external thread sections of the two stand columns 8. In this way, the four lock nuts 9 can be used to fix the support plate on the two stand columns 8. Moreover, when the height of the workpiece 16 to be disassembled or assembled is relatively high or low, the height of the support plate on the two stand columns 8 can be adjusted by adjusting the heights of the four lock nuts 9, so that the disassembly requirements of the corresponding workpiece 16 can be met.

[0025] The middle part of the support plate is provided with a vertical hole. A moving oil cylinder 10 is mounted on the upper end of the support plate through a fastener such as a bolt. The oil nozzle of the moving oil cylinder 10 is connected to a hydraulic pump 7 through a hydraulic oil path. The hydraulic pump 7 is mounted on the base 1, and the hydraulic pump 7 is preferably a manual hydraulic pump. The piston rod 11 of the moving oil cylinder 10 extends to the lower side of the support plate through the vertical hole, and the end of the piston rod 11 is provided with a pressing block 14. The shape of the pressing block 14 is inverted T-shaped, and the outer side of the pressing block 14 is sequentially sleeved with an auxiliary plate 13 and a spring I 12 from top to bottom. The two ends of the auxiliary plate 13 are provided with sliding holes, and the auxiliary plate 13 is vertically slidably mounted on the stand columns 8 on the two sides of the base plate 5 through the sliding holes. The upper surface of the auxiliary plate 13 abuts against the end surface of the piston rod 11 of the moving oil cylinder 10, the lower surface of the auxiliary plate 13 abuts against the spring I 12, and the lower end of the spring I 12 abuts against the flange edge arranged at the lower end of the pressing block 14. In this way, when the piston rod 11 of the moving oil cylinder 10 extends, the piston rod 11 will drive the pressing block 14 to press the component to be disassembled or assembled on one hand, and drive the auxiliary plate 13 to move downward on the other hand. During the downward movement, the auxiliary plate 13 is vertically slidably matched with the stand columns 8 on the two sides, so that the piston rod 11 always moves linearly in the vertical direction and does not deviate, thereby avoiding danger.

[0026] And when the action oil cylinder 10 adopts single-acting oil cylinder, the utility model also can set spring two 15 on the outside of the stand column 8, and make the lower surface of the auxiliary plate 13 can be in abutment with spring two 15, so when the piston rod 11 of action oil cylinder 10 extends and carries out the down-pressing action, the auxiliary plate 13 will extrude spring two 15, and spring two 15 is compressed and deformed, when action oil cylinder 10 ends the down-pressing action, and releases the hydraulic oil circuit on-off switch, it can utilize the elastic force of spring two 15 to help the piston rod 11 of action oil cylinder 10 reset.

[0027] In addition, as preferred, the utility model further includes a plurality of reducing sleeves 17 with different outer diameter sizes, and the reducing sleeves 17 can be sleeved on the outside of the pressing block 14, so when the utility model carries out corresponding dismounting operation or installation operation to some shaft sleeve with larger diameter to be dismounted or installed, it can first sleeve the reducing sleeve 17 of corresponding size on the outside of the pressing block 14, or place the reducing sleeve above the shaft sleeve to be dismounted or installed, and when the reducing sleeve 17 contacts the workpiece 16 at the lower end of the pressing block 14, the end of the reducing sleeve 17 close to the action oil cylinder 10 abuts against the auxiliary plate 13, and the end of the reducing sleeve 17 away from the action oil cylinder 10 is flush with the bottom end of the pressing block 14, then drives the reducing sleeve 17 and the pressing block 14 to press downward by the action of the action oil cylinder 10, to realize corresponding dismounting action or installation action, to ensure that the utility model can adapt to the shaft sleeve dismounting requirement of different sizes.

[0028] Meanwhile, the utility model also is provided with auxiliary support column 3 on the front side and / or rear side of the backing plate 5, and the component to be dismounted or installed is supported through the auxiliary support column 3, so as to reduce the labor intensity of workers, and when carrying the equipment, workers can also sleeve the reducing sleeve 17 at the auxiliary support column 3, to prevent the reducing sleeve 17 from rolling and falling.

[0029] The terms "first", "second", "third", "fourth" etc. (if any) in the specification and claims of the utility model and the above-mentioned drawings are used to distinguish similar objects, and do not have to be used to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the utility model described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0030] The above description of disclosed embodiments enables one of ordinary skill in the art to make or use the application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Thus, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A bushing pin dismounting and mounting tool, characterized in that, The utility model provides a kind of adjustable support, including base (1), the upper portion of base (1) is provided with at least two supports (4), the upper end of all supports (4) is jointly installed with a backing plate (5), the middle part of backing plate (5) is penetrated with through-hole (2);The left and right sides of backing plate (5) are provided with stand (8), and the upper end of all stand (8) is jointly installed with a support plate, the middle part of support plate is penetrated with vertical hole, and the upper end of support plate is installed with action oil cylinder (10), the oil nozzle of action oil cylinder (10) is communicated with hydraulic pump (7) by hydraulic oil circuit, and the piston rod (11) of action oil cylinder (10) extends to the lower side of support plate by vertical hole, and the end of piston rod (11) is provided with pressing block (14).

2. The bushing pin bushing removal and installation tool of claim 1, wherein, The shape of pressing block (14) is inverted T, and the outside of pressing block (14) is sequentially sleeved with auxiliary plate (13), spring one (12) from top to bottom, both ends of auxiliary plate (13) are provided with sliding hole, auxiliary plate (13) is vertically slidably installed on the stand (8) of both sides of backing plate (5) by sliding hole, and the upper surface of auxiliary plate (13) is in abutment with the end surface of piston rod (11) of action oil cylinder (10), and the lower surface of auxiliary plate (13) is in abutment with spring one (12).

3. The bushing pin bushing removal and installation tool of claim 2, wherein, The outside of stand (8) is sleeved with spring two (15), and the lower surface of auxiliary plate (13) can be in abutment with spring two (15).

4. The bushing pin bushing removal and installation tool of claim 2, wherein, Further including at least one reducing sleeve (17), reducing sleeve (17) can be sleeved on the outside of pressing block (14);When reducing sleeve (17) is sleeved on the outside of pressing block (14), and the end of reducing sleeve (17) close to action oil cylinder (10) is in abutment with auxiliary plate (13), the end of reducing sleeve (17) away from action oil cylinder (10) is flush with the bottom end of pressing block (14).

5. The bushing pin bushing removal and installation tool of claim 1, wherein, The upper end of support (4) is fixed with plug rod (6), and the edge of backing plate (5) is provided with mounting hole, and mounting hole can be inserted with corresponding plug rod (6).

6. The bushing pin bushing removal and installation tool of claim 1, wherein, The front side and / or rear side of backing plate (5) is provided with auxiliary support column (3).

7. The bushing pin bushing removal and installation tool of claim 1, wherein, Hydraulic pump (7) is manual hydraulic pump.

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