Inner wall polishing device for hydraulic cylinder sleeve

Abstract

The utility model discloses an inner wall polishing device for a hydraulic cylinder sleeve, and relates to the technical field of machining. The polishing device comprises a supporting frame, a lifting plate, a driving assembly and a hydraulic cylinder, the lifting plate is arranged above one side of the top of the supporting frame, a supporting plate is fixed to the bottom of the lifting plate, and the driving assembly is arranged on the side, away from the inner wall of the supporting frame, of the supporting plate and comprises a driving motor, a motor shaft and a polishing roller. A motor shaft is fixed to the output end of the driving motor, a polishing roller is fixed to the end, away from the driving motor, of the motor shaft, and a hydraulic cylinder is fixed to the side, away from the inner wall of the supporting frame, of the lifting plate. By arranging the supporting frame, the lifting plate, the driving assembly and the hydraulic cylinder, the problems that in the inner wall polishing process of the hydraulic cylinder sleeve, due to the fact that pressing polishing is needed, the polishing position is not convenient to change, and the hydraulic cylinder sleeve is not convenient to assemble and disassemble on the polishing device are solved.

Description

Technical Field

[0001] This utility model belongs to the field of mechanical processing technology, and in particular relates to a device for grinding the inner wall of a hydraulic cylinder liner. Background Technology

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy, performing linear reciprocating motion (or oscillating motion). It has a simple structure and reliable operation. When used to achieve reciprocating motion, it eliminates the need for a speed reduction device and has no transmission backlash, resulting in smooth movement. Therefore, it is widely used in the hydraulic systems of various machines. The output force of a hydraulic cylinder is directly proportional to the effective area of ​​the piston and the pressure difference between its two sides. A hydraulic cylinder basically consists of a cylinder liner and cylinder head, a piston and piston rod, a sealing device, a buffer device, and a venting device. The buffer and venting devices are optional depending on the specific application. The other devices are essential. After the cylinder liner is cast, its inner wall needs to be polished smooth to ensure a tighter fit between the cylinder liner and the piston. This requires polishing equipment to smooth the inner wall of the cylinder liner. However, in practical use, it still has the following drawbacks:

[0003] 1. During the grinding process of the inner wall of the hydraulic cylinder liner, the inner wall is ground as a whole by grinding equipment. However, during the grinding process, it is necessary to ensure that the grinding structure and the inner wall of the cylinder liner are tightly bonded. Therefore, it is necessary to press the grinding structure and the cylinder liner together. However, after pressing, the grinding of different positions on the inner wall of the cylinder liner needs to be changed to ensure that the inner wall of the cylinder liner is completely ground. After the cylinder liner and the grinding structure are pressed together, grinding the inner wall of the cylinder liner is not convenient.

[0004] 2. After the inner wall of the hydraulic cylinder liner is ground, the cylinder liner needs to be pushed out of the grinding device to complete the discharge. However, the cylinder liner needs to be clamped during grinding, and after grinding, the clamping structure needs to be loosened before the material can be discharged through the external feeding structure. This results in low efficiency of cylinder liner grinding during operation. Utility Model Content

[0005] The purpose of this utility model is to provide a grinding device for the inner wall of a hydraulic cylinder liner. By setting up a support frame, a lifting plate, a drive assembly and a hydraulic cylinder, it solves the problems that it is not convenient to change the grinding position during the grinding process of the inner wall of the hydraulic cylinder liner due to the need for pressing and grinding, and that it is not convenient to load and unload the hydraulic cylinder liner on the grinding device.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0007] This utility model relates to a grinding device for the inner wall of a hydraulic cylinder liner, comprising a support frame, a lifting plate, a drive assembly, and a hydraulic cylinder. The lifting plate is positioned above one side of the top of the support frame, and a support plate is fixed to the bottom of the lifting plate. A drive assembly is positioned on the side of the support plate away from the inner wall of the support frame. The drive assembly includes a drive motor, a motor shaft, and a grinding roller. The output end of the drive motor is fixed to the motor shaft, and the end of the motor shaft away from the drive motor is fixed to the grinding roller. The hydraulic cylinder is fixed on the side of the lifting plate away from the inner wall of the support frame. During operation, the electric rollers are supported within the support frame. As the lifting plate rises and falls, it drives the hydraulic cylinder to rise and fall. The drive assembly drives the grinding roller to rotate, grinding the hydraulic cylinder liner between the two electric rollers. After the hydraulic cylinder pushes the cylinder liner body between the two electric rollers, it drives the cylinder liner body away from the two electric rollers.

[0008] Furthermore, an electric roller is symmetrically arranged in the upper part of the support frame. The two output ends of the electric roller are respectively fixed on both sides of the inner wall of the support frame. The axis of the electric roller is perpendicular to the side of the lifting plate near the center of the support frame. The support frame drives the cylinder liner body that needs to be ground to rotate through the electric roller.

[0009] Furthermore, each of the lifting plates on both sides of the support plate is fixed with an electric push rod, and the bottom of each of the two electric push rods is fixed to the top of the support frame. The support plate is driven to rise and fall by the electric push rods.

[0010] Furthermore, a rotating hole is provided in the center of the support plate, corresponding to the axis of the motor shaft, and the motor shaft is inserted into the rotating hole. A cylinder liner body is provided on the upper periphery between the two electric rollers, and the grinding roller is set in the cylinder liner body. The support plate is movably connected to the motor shaft through the rotating hole.

[0011] Furthermore, the drive assembly also includes a motor base, an electric push rod two, and a base plate. The bottom of the drive motor is fixed with a motor base, the bottom of the motor base is fixed with an electric push rod two, and the bottom of the electric push rod two is fixed with a base plate. The base plate is fixed to the outside of the support frame. The drive motor is supported on the electric push rod two by the motor base, and the electric push rod two is fixed on the base plate. The base plate is fixed to the support frame, so that the electric push rod two is connected to the support frame.

[0012] Furthermore, a through hole is provided in the center of one side of the lifting plate, and a hydraulic cylinder is fixed in the center of the side of the lifting plate away from the inner wall of the support frame. A hydraulic rod is movably connected inside the hydraulic cylinder, and the hydraulic rod is inserted through the through hole. A push plate is fixed to the end of the hydraulic rod away from the hydraulic cylinder. The lifting plate is movably connected to the hydraulic rod through the through hole. The hydraulic cylinder drives the hydraulic rod to drive the push plate to move. During the movement of the push plate, the cylinder sleeve body between the two electric rollers moves.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model solves the problem of inconvenience in changing the grinding position during the grinding of the inner wall of a hydraulic cylinder liner due to the need for pressing during grinding. By setting up a support frame, a lifting plate, and a drive assembly, this utility model solves the problem of inconvenience in changing the grinding position during the grinding of the inner wall of a hydraulic cylinder liner. After the grinding roller presses onto the inner wall of the cylinder liner body and the cylinder liner body is supported by the electric roller, the drive motor and the electric roller are started. The motor shafts driven by the electric roller and the drive motor rotate in opposite directions. At this time, the cylinder liner body rotates while the grinding roller driven by the drive motor grinds the inner wall, making it more convenient to change the grinding position of the inner wall of the hydraulic cylinder liner during operation.

[0015] 2. This utility model solves the problem of inconvenient loading and unloading of hydraulic cylinder liners on the grinding device by setting up a support frame, lifting plate, drive assembly, and hydraulic cylinder. After the cylinder liner body is delivered to a suitable position above the two electric rollers, the first and second electric push rods are activated to descend, thus restricting the cylinder liner body. After the cylinder liner body has finished grinding, the drive motor and electric rollers stop working. The grinding roller driven by the drive motor rises under the drive of the first and second electric push rods, and the hydraulic cylinder is activated. The hydraulic rod drives the push plate to push the cylinder liner body on the electric roller, pushing the cylinder liner body from between the two electric rollers to the external feeding structure. During the operation, the loading and unloading of the hydraulic cylinder liner on the grinding device is more convenient. Attached Figure Description

[0016] 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.

[0017] Figure 1 A three-dimensional view of the assembly structure of a hydraulic cylinder liner inner wall grinding device;

[0018] Figure 2 This is a 3D view of the supporting frame structure;

[0019] Figure 3 This is a 3D view of the lifting platform structure;

[0020] Figure 4 A 3D diagram of the drive component structure;

[0021] Figure 5 This is a 3D view of the hydraulic cylinder structure.

[0022] Figure label:

[0023] 1. Support frame; 101. Electric roller; 2. Lifting plate; 201. Insertion hole; 202. Support plate; 203. Rotary hole; 204. Electric push rod one; 3. Drive assembly; 301. Drive motor; 302. Motor shaft; 303. Grinding roller; 304. Motor base; 305. Electric push rod two; 306. Base plate; 4. Hydraulic cylinder; 401. Hydraulic rod; 402. Push plate; 5. Cylinder liner body. Detailed Implementation

[0024] 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. Specific Implementation Example 1

[0026] Please see Figure 1-5 This utility model relates to a grinding device for the inner wall of a hydraulic cylinder liner, comprising a support frame 1, a lifting plate 2, a drive assembly 3, and a hydraulic cylinder 4. The lifting plate 2 is positioned above one side of the top of the support frame 1, supporting an electric roller 101 within it. The lifting plate 2, during lifting and lowering, drives the support plate 202 to rise and fall. The support plate 202 is fixed to the bottom of the lifting plate 2, assisting in supporting the grinding roller 303. The drive assembly 3 is positioned on the side of the support plate 202 away from the inner wall of the support frame 1. The drive assembly 3 includes a drive motor 301, a motor shaft 302, and the grinding roller 303. The output end of the drive motor 301 is fixed to the motor shaft 302, which is located away from the inner wall of the support frame 1. A grinding roller 303 is fixed to one end of the drive motor 301. The drive motor 301 drives the shaft of the motor 301 to rotate. When the motor shaft 302 rotates, it drives the grinding roller 303 to rotate. When the grinding roller 303 rotates, it is placed on the inner wall of the cylinder liner body 5 to grind the inner wall of the cylinder liner body 5. A hydraulic cylinder 4 is fixed on the side of the lifting plate 2 away from the inner wall of the support frame 1. The hydraulic cylinder 4 drives the push plate 402 to abut against the end of the cylinder liner body 5 to be ground. When the cylinder liner body 5 is placed on the electric roller 101, the position of the cylinder liner body 5 is restricted. After the inner wall of the cylinder liner body 5 is ground, the cylinder liner body 5 is pushed off the electric roller 101 by the drive of the hydraulic cylinder 4.

[0027] Specifically, an electric roller 101 is symmetrically arranged in the upper part of the support frame 1. The two output ends of the electric roller 101 are fixed on both sides of the inner wall of the support frame 1. The axis of the electric roller 101 is perpendicular to the side of the lifting plate 2 near the center of the support frame 1. When working, the rotation direction of the electric roller 101 is opposite to the rotation direction of the drive motor 301, so that the cylinder liner body 5 driven on it is being polished while rolling, so that all parts of the inner wall of the cylinder liner are polished.

[0028] Furthermore, electric push rods 204 are fixed to the bottom of the lifting plates 2 on both sides of the support plate 202. The bottom of the two electric push rods 204 are fixed to the top of the support frame 1. The lifting plates 2 are driven to rise and fall by the electric push rods 204, thereby driving the support plate 202 to rise and fall.

[0029] Furthermore, a rotating hole 203 is provided in the center of the support plate 202, corresponding to the axis of the motor shaft 302. The motor shaft 302 is inserted into the rotating hole 203. A cylinder liner body 5 is provided on the upper periphery between the two electric rollers 101. The grinding roller 303 is provided in the cylinder liner body 5. The support plate 202 is movably connected to the motor shaft 302 through the rotating hole 203.

[0030] Furthermore, the drive assembly 3 also includes a motor base 304, an electric push rod 305, and a base plate 306. The bottom of the drive motor 301 is fixed with the motor base 304, the bottom of the motor base 304 is fixed with the electric push rod 305, and the bottom of the electric push rod 305 is fixed with the base plate 306. The base plate 306 is fixed to the outside of the support frame 1. The drive assembly 3 is supported on the electric push rod 305 by the motor base 304, and the electric push rod 305 is fixed to the support frame 1 by the base plate 306. The electric push rod 305 drives the motor 301 to rise and fall, thereby driving the drive motor 301 to rise and fall.

[0031] The operation process of this embodiment is as follows: During operation, firstly, electric push rod 204 and electric push rod 305 are activated to drive the lifting plate 2 and motor base 304 to rise synchronously. At this time, the lifting plate 2 drives the support plate 202 to rise. Through the rise of the support plate 202, the motor shaft 302 and the grinding roller 303 are driven to rise. Through the rise of the motor base 304, the drive motor 301 is driven to rise. Then, through the external feeding structure, the cylinder liner body 5 is sent to the two electric rollers 101 inside the support frame 1, so that the grinding roller 303 is set in the cylinder liner body 5. Then, electric push rod 204 and electric push rod 305 are activated. Electric push rod 204 drives the lifting plate 2 to lower the support plate 202, and electric push rod 305 drives the motor 301 seat to lower, so that the grinding roller 303 presses against the inner wall of the cylinder liner body 5. At this time, the drive motor 301 and electric roller 101 are activated. The electric roller 101 and the motor shaft 302 driven by the drive motor 301 rotate in opposite directions. At this time, the cylinder liner body 5 rotates while the grinding roller 303 driven by the drive motor 301 grinds the inner wall. Specific Implementation Example 2

[0033] Please see Figure 1 , 2 5. Based on the specific embodiment one, a through hole 201 is provided in the center of one side of the lifting plate 2. A hydraulic cylinder 4 is fixed in the center of the side of the lifting plate 2 away from the inner wall of the support frame 1. A hydraulic rod 401 is movably connected inside the hydraulic cylinder 4 and is inserted through the through hole 201. A push plate 402 is fixed to the end of the hydraulic rod 401 away from the hydraulic cylinder 4. The lifting plate 2 is movably connected to the hydraulic rod 401 through the through hole 201. The hydraulic cylinder 4 drives the hydraulic rod 401 to move, thereby causing the push plate 402 to change position. When it is necessary to transport the cylinder liner body 5 to the periphery of the electric roller 101 inside the support frame 1, and support it with the electric roller 101... The hydraulic cylinder 4 is activated, and the hydraulic rod 401 drives the push plate 402 to move to the upper limit position of the electric roller 101, thus restricting the cylinder liner body 5 to move to the position between the two electric rollers 101. After the cylinder liner body 5 has finished grinding, the drive motor 301 and the electric roller 101 both stop working. The grinding roller 303 driven by the drive motor 301 rises under the drive of the electric push rod 204 and the electric push rod 305. The hydraulic cylinder 4 is activated, and the hydraulic rod 401 drives the push plate 402 to push the cylinder liner body 5 on the electric roller 101, pushing the cylinder liner body 5 from between the two electric rollers 101 to the external feeding structure.

[0034] The operation process of this embodiment is as follows: Hydraulic cylinder 4 drives hydraulic rod 401 to move, thereby causing push plate 402 to change position. When it is necessary to transport cylinder liner body 5 to the periphery of electric roller 101 in support frame 1 and support it by electric roller 101, hydraulic cylinder 4 is activated, driving hydraulic rod 401 to move push plate 402 to the upper limit position of electric roller 101. Then, the cylinder liner body 5 is conveyed by external feeding structure to move between the two electric rollers 101 until cylinder liner body 5 abuts against push plate 402. Afterwards, the cylinder liner body 5 is restricted to move to the position between the two electric rollers 101. When the cylinder liner body 5 has finished grinding, the drive motor 301 and the electric roller 101 both stop working. The grinding roller 303 driven by the drive motor 301 rises under the drive of the electric push rod 204 and the electric push rod 305, and starts the hydraulic cylinder 4. The drive hydraulic rod 401 drives the push plate 402 to push the cylinder liner body 5 on the electric roller 101, pushing the cylinder liner body 5 from between the two electric rollers 101 to the external feeding structure.

[0035] 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.

[0036] 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 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 this 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 device for grinding the inner wall of a hydraulic cylinder liner, comprising a support frame (1), a lifting plate (2), a drive assembly (3), and a hydraulic cylinder (4), characterized in that: A lifting plate (2) is provided above the top side of the support frame (1). A support plate (202) is fixed at the bottom of the lifting plate (2). A drive assembly (3) is provided on the side of the support plate (202) away from the inner wall of the support frame (1). The drive assembly (3) includes a drive motor (301), a motor shaft (302), and a grinding roller (303). The output end of the drive motor (301) is fixed with the motor shaft (302). The end of the motor shaft (302) away from the drive motor (301) is fixed with the grinding roller (303). A hydraulic cylinder (4) is fixed on the side of the lifting plate (2) away from the inner wall of the support frame (1).

2. The hydraulic cylinder liner inner wall grinding device according to claim 1, characterized in that: An electric roller (101) is symmetrically arranged in the upper part of the support frame (1). The two output ends of the electric roller (101) are fixed on both sides of the inner wall of the support frame (1). The axis of the electric roller (101) is perpendicular to the side of the lifting plate (2) near the center of the support frame (1).

3. The hydraulic cylinder liner inner wall grinding device according to claim 1, characterized in that: The bottom of the lifting plates (2) on both sides of the support plate (202) is fixed with an electric push rod (204), and the bottom of the two electric push rods (204) is fixed to the top of the support frame (1).

4. The hydraulic cylinder liner inner wall grinding device according to claim 2, characterized in that: A rotating hole (203) is provided in the center of the support plate (202) corresponding to the axis of the motor shaft (302). The motor shaft (302) is inserted into the rotating hole (203). A cylinder liner body (5) is provided on the upper periphery between the two electric rollers (101). The grinding roller (303) is provided in the cylinder liner body (5).

5. The hydraulic cylinder liner inner wall grinding device according to claim 1, characterized in that: The drive assembly (3) also includes a motor mount (304), an electric push rod II (305), and a base plate (306). The bottom of the drive motor (301) is fixed with the motor mount (304), the bottom of the motor mount (304) is fixed with the electric push rod II (305), the bottom of the electric push rod II (305) is fixed with the base plate (306), and the base plate (306) is fixed to the outside of the support frame (1).

6. The hydraulic cylinder liner inner wall grinding device according to claim 1, characterized in that: The lifting plate (2) has a through hole (201) in the center of one side. A hydraulic cylinder (4) is fixed in the center of the side of the lifting plate (2) away from the inner wall of the support frame (1). A hydraulic rod (401) is movably connected inside the hydraulic cylinder (4). The hydraulic rod (401) is inserted through the hole (201). A push plate (402) is fixed at the end of the hydraulic rod (401) away from the hydraulic cylinder (4).

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