Piston copper bush mounting clamp

Abstract

The utility model discloses a piston copper bush installation clamp which comprises a U-shaped frame, a piston body and a copper bush body, the copper bush body is placed on the U-shaped frame, the inner top of the U-shaped frame is connected with two telescopic rods through a driving assembly, the opposite side walls of the two telescopic rods are fixedly connected with arc-shaped clamping plates, and the arc-shaped clamping plates are fixedly connected with the piston body. The driving assembly drives the two telescopic rods to get close to each other, so that the two arc-shaped clamping plates jointly act to clamp and fix the copper bush body, the copper bush body is opposite to the piston body, and a pressing assembly for driving the copper bush body to move downwards to be pressed into the piston body is installed on the inner top of the U-shaped frame. The device is reasonable in structural design, the two arc-shaped clamping plates are controlled to be close to each other, a copper bush body can be clamped and fixed, the copper bush body is vertically located over a piston body and aligned with the piston body, the pressing air cylinder drives the first pressing plate to move downwards, the copper bush body can be pressed into the piston body, installation work is completed, and operation is rapid, easy and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of piston assembly auxiliary devices, in particular to a piston copper sleeve installation fixture. Background Art

[0002] The piston is a core component of the engine. Its main function is to withstand the pressure of the combustion gas and transmit this force to the connecting rod through the piston pin to drive the crankshaft to rotate, thereby achieving the purpose of driving the car. In this process, the piston pin hole is a key part for transmitting force, and has the characteristics of stress concentration and cyclic force. Therefore, the stable performance of the piston pin hole is particularly important; the copper sleeve piston is to solve the problem that the piston pin seat has insufficient bearing capacity under high explosive pressure. By embedding a copper sleeve in the piston pin hole, the load-bearing capacity of the piston pin seat is improved.

[0003] At present, the installation of copper sleeves is generally pre-treated by heating the piston and cooling the copper sleeve, and then assembled. During installation, the copper sleeve and the piston need to be aligned, and then the copper sleeve is pressed into the piston. The angle and relative position of the two need to be accurately grasped to avoid the rapid heating of the copper sleeve and the piston after contact, which causes the piston and the copper sleeve to quickly form an interference fit and become unable to move. For this reason, we designed a piston copper sleeve installation fixture to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to solve the problem in the prior art that during the installation of a piston copper sleeve, the angle and relative position of the two need to be accurately grasped, and a piston copper sleeve installation fixture is proposed, which controls two arc-shaped clamping plates to approach each other so as to clamp and fix the copper sleeve body, so that the copper sleeve body is vertically located directly above the piston body and is aligned with each other. The clamping cylinder drives the first pressing plate to move downward so as to press the copper sleeve body into the piston body, thereby completing the installation work, and the operation is quick and easy.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A piston copper sleeve installation fixture comprises a U-shaped frame, a piston body and a copper sleeve body, wherein the copper sleeve body is placed on the U-shaped frame, and the inner top of the U-shaped frame is connected to two telescopic rods through a driving component, and the opposite side walls of the two telescopic rods are fixedly connected with arc-shaped clamping plates, and the driving component drives the two telescopic rods to approach each other so that the two arc-shaped clamping plates work together to clamp and fix the copper sleeve body, and the copper sleeve body is opposite to the piston body, and the inner top of the U-shaped frame is equipped with a clamping component that drives the copper sleeve body to move downward and press into the piston body.

[0007] Preferably, a plurality of limit plates are fixedly connected to the upper end of the U-shaped frame, the plurality of limit plates are respectively abutted against a plurality of side walls of the piston body, and the side walls of one end of the plurality of limit plates close to the piston body are all inclinedly arranged.

[0008] Preferably, the driving assembly includes a guide slot opened at the top of the U-shaped frame, the two telescopic rods are slidably connected in the guide slot, the inner side wall of the guide slot is rotatably connected to a double-headed screw extending to the outside of the U-shaped frame, the double-headed screw thread passes through the two telescopic rods, and the side wall of the U-shaped frame is installed with a servo motor for driving the double-headed screw to rotate through a support plate.

[0009] Preferably, the telescopic rod includes a sleeve slidably connected in the guide groove, the double-headed screw thread passes through the sleeve, an L-shaped plate extending to the bottom thereof is slidably connected in the sleeve, a plurality of springs are connected between the L-shaped plate and the inner top of the sleeve, and the arc-shaped clamping plate is fixedly connected to the side wall of the L-shaped plate.

[0010] Preferably, the clamping assembly includes a mounting plate fixedly connected to the top of the U-shaped frame, a clamping cylinder is installed at the bottom of the mounting plate, a first clamping plate is fixedly connected to the end of the output shaft of the clamping cylinder, and two second clamping plates are symmetrically and detachably connected to the bottom of the first clamping plate.

[0011] Preferably, the two second pressing plates are connected to the bottom of the first pressing plate by a plurality of screws.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] 1. This piston copper sleeve installation fixture places the piston body between multiple limit plates. The multiple limit plates can fix the piston body and control the two sleeves to approach each other. The two L-shaped plates drive the two arc-shaped clamping plates to approach each other to clamp and fix the copper sleeve body. At this time, the copper sleeve body is vertically located directly above the piston body.

[0014] 2. This piston copper sleeve installation fixture starts the clamping cylinder to drive the first pressure plate to move downward so that the second pressure plate pushes the copper sleeve body to move downward, so that the copper sleeve body can be pressed into the piston body. When the copper sleeve body is gradually pressed into the piston body, the two sleeves are controlled to move away from each other so that the arc-shaped clamping plate is away from the copper sleeve body. The clamping cylinder continues to drive the second pressure plate to move downward, so that the copper sleeve body can be fully pressed into the piston body, completing the installation work. The operation is quick and easy. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the three-dimensional structure from a first-view perspective of a piston copper sleeve installation fixture proposed by the utility model;

[0016] Figure 2 for Figure 1 A magnified view of the structure at center;

[0017] Figure 3 This is a schematic diagram of the three-dimensional structure from a second viewing angle of a piston copper sleeve installation fixture proposed by the utility model;

[0018] Figure 4 This is a schematic diagram of the main planar structure of a piston copper sleeve mounting fixture proposed by the utility model.

[0019] In the figure: 1. U-shaped frame; 2. Piston body; 3. Limiting plate; 4. Guide slide groove; 5. Sleeve; 6. L-shaped plate; 7. Arc clamping plate; 8. Servo motor; 9. Double-headed screw; 10. Support plate; 11. Mounting plate; 12. Clamping cylinder; 13. First pressure plate; 14. Second pressure plate; 15. Copper sleeve body; 16. Spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-Figure 4 A piston copper sleeve installation fixture comprises a U-shaped frame 1, a piston body 2 and a copper sleeve body 15. The copper sleeve body 15 is placed on the U-shaped frame 1. A plurality of limiting plates 3 are fixedly connected to the upper end of the U-shaped frame 1. The plurality of limiting plates 3 are respectively against a plurality of side walls of the piston body 2. The plurality of limiting plates 3 can limit the piston body 2 to prevent the piston body 2 from shaking or moving when the copper sleeve body 15 is installed in the piston body 2. The side walls of one end of the plurality of limiting plates 3 close to the piston body 2 are all inclined, which is conducive to placing the piston body 2 between the plurality of limiting plates 3.

[0022] The inner top of the U-shaped frame 1 is connected to two telescopic rods through a driving assembly, and the driving assembly includes a guide slot 4 opened on the inner top of the U-shaped frame 1, and the two telescopic rods are slidably connected in the guide slot 4. The inner side wall of the guide slot 4 is rotatably connected with a double-headed screw 9 extending to the outside of the U-shaped frame 1. The double-headed screw 9 threads penetrate the two telescopic rods. The side wall of the U-shaped frame 1 is installed with a servo motor 8 driving the double-headed screw 9 to rotate through a support plate 10. The support plate 10 is fixedly connected to the side wall of the U-shaped frame 1. The servo motor 8 is installed on the front side wall of the support plate 10. The servo motor 8 drives the double-headed screw 9 to rotate, and can make the two telescopic rods approach or move away from each other under the action of its thread meshing;

[0023] The opposite side walls of the two telescopic rods are fixedly connected with arc-shaped clamping plates 7. The driving component drives the two telescopic rods to approach each other so that the two arc-shaped clamping plates 7 work together to clamp and fix the copper sleeve body 15. The telescopic rod includes a sleeve 5 slidably connected in the guide slide groove 4. The double-headed screw 9 threadably penetrates the sleeve 5. The sleeve 5 is slidably connected with an L-shaped plate 6 extending below it. The L-shaped plate 6 is adapted to the sleeve 5 so that the L-shaped plate 6 can only slide up and down in the sleeve 5. A plurality of springs 16 are connected between the L-shaped plate 6 and the inner top of the sleeve 5. The spring 16 is a tension spring, which can pull the L-shaped plate 6 to retract into the sleeve 5 in a natural state. The arc-shaped clamping plate 7 is fixedly connected to the side wall of the L-shaped plate 6. The inner side wall of the arc-shaped clamping plate 7 is provided with anti-slip grooves, which can increase the friction between the copper sleeve body 15 and the copper sleeve body 15, and stably fix the copper sleeve body 15.

[0024] The copper sleeve body 15 is opposite to the piston body 2, and a clamping assembly for driving the copper sleeve body 15 to move downward and press it into the piston body 2 is installed on the inner top of the U-shaped frame 1. The clamping assembly includes a mounting plate 11 fixedly connected to the inner top of the U-shaped frame 1, and a clamping cylinder 12 is installed at the bottom of the mounting plate 11. The end of the output shaft of the clamping cylinder 12 is fixedly connected to a first pressing plate 13, and the bottom of the first pressing plate 13 is symmetrically and detachably connected to two second pressing plates 14, and the two second pressing plates 14 are connected to the bottom of the first pressing plate 13 by multiple screws. The second pressing plate 14 can increase the contact area with the copper sleeve body 15, which is conducive to stably pressing the copper sleeve body 15 into the piston body 2, and can be removed and replaced by screw connection when the second pressing plate 14 is deformed.

[0025] The functional principle of the utility model can be explained through the following operation modes:

[0026] In the utility model, during the working process of the piston copper sleeve installation fixture, the piston body 2 and the copper sleeve body 15 are pre-processed, the piston body 2 is placed between multiple limit plates 3 to ensure the stability of the piston body 2 during the installation process, and the copper sleeve body 15 is placed between two arc-shaped clamping plates 7. The servo motor 8 drives the double-headed screw 9 to rotate, which can make the two sleeves 5 approach each other under the action of the thread meshing, and then the two L-shaped plates 6 drive the two arc-shaped clamping plates 7 to approach each other and work together to clamp and fix the copper sleeve body 15. At this time, the copper sleeve body 15 is located directly above the piston body 2, and the copper sleeve body 15 is aligned with the piston body 2;

[0027] Start the clamping cylinder 12 to drive the first pressure plate 13 to move downward, so that the second pressure plate 14 pushes the copper sleeve body 15 to move downward and press the copper sleeve body 15 into the piston body 2. During this process, the L-shaped plate 6 moves downward, so that the copper sleeve body 15 can move downward stably. When the copper sleeve body 15 is gradually pressed into the piston body 2, the two sleeves 5 are controlled to move away from each other, and the arc-shaped clamping plate 7 can be away from the copper sleeve body 15. The clamping cylinder 12 continues to drive the first pressure plate 13 and the second pressure plate 14 to move downward, so that the copper sleeve body 15 can be fully pressed into the piston body 2 to complete the installation work.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A piston copper sleeve mounting fixture, comprising a U-shaped frame (1), a piston body (2) and a copper sleeve body (15), characterized in that: The copper sleeve body (15) is placed on a U-shaped frame (1); the inner top of the U-shaped frame (1) is connected to two telescopic rods via a driving component; the opposite side walls of the two telescopic rods are fixedly connected to arc-shaped clamping plates (7); the driving component drives the two telescopic rods to approach each other so that the two arc-shaped clamping plates (7) work together to clamp and fix the copper sleeve body (15); the copper sleeve body (15) is opposite to the piston body (2); and the inner top of the U-shaped frame (1) is installed with a pressing component that drives the copper sleeve body (15) to move downward and press into the piston body (2).

2. A piston copper sleeve installation fixture according to claim 1, characterized in that: A plurality of limit plates (3) are fixedly connected to the upper end of the U-shaped frame (1), the plurality of limit plates (3) respectively abut against a plurality of side walls of the piston body (2), and the side walls of one end of the plurality of limit plates (3) close to the piston body (2) are all arranged at an angle.

3. A piston copper sleeve installation fixture according to claim 1, characterized in that: The driving assembly comprises a guide slot (4) provided at the top of the U-shaped frame (1), the two telescopic rods being slidably connected in the guide slot (4), the inner side wall of the guide slot (4) being rotatably connected with a double-headed screw (9) extending to the outside of the U-shaped frame (1), the double-headed screw (9) threadably passing through the two telescopic rods, and the side wall of the U-shaped frame (1) being mounted with a servo motor (8) for driving the double-headed screw (9) to rotate via a support plate (10).

4. A piston copper sleeve installation fixture according to claim 3, characterized in that: The telescopic rod comprises a sleeve (5) slidably connected in a guide slot (4); the double-headed screw (9) is threadedly inserted into the sleeve (5); an L-shaped plate (6) extending below the sleeve (5) is slidably connected in the sleeve (5); a plurality of springs (16) are connected between the L-shaped plate (6) and the inner top of the sleeve (5); and the arc-shaped clamping plate (7) is fixedly connected to the side wall of the L-shaped plate (6).

5. The piston copper sleeve installation fixture according to claim 1, characterized in that: The clamping assembly comprises a mounting plate (11) fixedly connected to the top of the U-shaped frame (1), a clamping cylinder (12) being mounted at the bottom of the mounting plate (11), a first clamping plate (13) being fixedly connected to the end of the output shaft of the clamping cylinder (12), and two second clamping plates (14) being symmetrically and detachably connected to the bottom of the first clamping plate (13).

6. A piston copper sleeve installation fixture according to claim 5, characterized in that: The two second pressing plates (14) are connected to the bottom of the first pressing plate (13) via a plurality of screws.

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