Crankshaft ring gear dismounting device

Abstract

The utility model discloses a kind of crankshaft gear ring dismounting devices, it relates to mechanical manufacturing technical field, a kind of crankshaft gear ring dismounting device, including tooling platform and manual hydraulic cylinder, the upper surface of the tooling platform is fixedly provided with guide seat, the top of the guide seat is equipped with gear clamping block for fixing crankshaft gear ring, the manual hydraulic cylinder is vertically installed on tooling platform and located in the side of guide seat, the output end of the manual hydraulic cylinder is set towards guide seat direction, and output end end portion is detachably connected with protection block and cushion block in sequence, the protection block is axially corresponding with the crankshaft to be dismounted, through the accurate clamping of gear clamping block, the elastic buffer of protection block, deformation, scratch in the dismounting process of crankshaft and gear ring is completely avoided, and the rejection rate of part is reduced;Manual hydraulic cylinder provides stable controllable thrust, without the cooperation of multiple people to adjust stress, single person can operate, significantly shorten the maintenance time, reduce labor cost.

Description

Technical Field

[0001] This utility model relates to the field of mechanical manufacturing technology, specifically to a crankshaft gear ring disassembly device. Background Technology

[0002] During engine assembly and maintenance, the crankshaft and gear ring are typically connected with an interference fit to ensure transmission reliability. When the crankshaft or gear ring needs to be inspected or replaced, they must be separated, but existing disassembly methods have significant drawbacks: When installing gears, the gears may tilt. Since the gears and crankshaft are installed with an interference fit, ordinary manual disassembly will damage the gears. This is where the necessity of this disassembly tool comes into play. During disassembly, it can ensure that the gears are not damaged, and greatly shorten the maintenance time, while saving manpower and reducing maintenance costs. Therefore, we propose a crankshaft gear ring disassembly device. Utility Model Content

[0003] In view of the problems existing in the current crankshaft gear ring disassembly device, this utility model is proposed.

[0004] Therefore, the purpose of this utility model is to provide a crankshaft gear ring disassembly device. Through the precise clamping of the gear clamping block and the elastic buffering of the protective block, the deformation and scratches of the crankshaft and gear ring during the disassembly process are completely avoided, reducing the scrap rate of parts. The manual hydraulic cylinder provides stable and controllable thrust, eliminating the need for multiple people to adjust the force. It can be operated by a single person, significantly shortening maintenance time and reducing labor costs, thus solving the problem of a crankshaft gear ring disassembly device.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A crankshaft gear ring disassembly device includes a tooling platform and a manual hydraulic cylinder. A guide seat is fixedly mounted on the upper surface of the tooling platform. A gear clamping block for fixing the crankshaft gear ring is provided on the top of the guide seat. The manual hydraulic cylinder is vertically mounted on the tooling platform and located on one side of the guide seat. The output end of the manual hydraulic cylinder faces the guide seat, and a protective block and a pad are detachably connected to the end of the output end in sequence. The protective block corresponds axially to the crankshaft to be disassembled. The guide seat and the gear clamping block form a clamping structure for limiting the radial displacement of the crankshaft gear ring. The tooling platform is also provided with a crankshaft disassembly frame assembly for supporting the crankshaft. The crankshaft disassembly frame assembly is located on the side of the guide seat away from the manual hydraulic cylinder. The manual hydraulic cylinder provides stable disassembly power, the gear clamping block and the guide seat fix the gear ring, and the protective block prevents damage to the crankshaft.

[0006] Preferably, the manual hydraulic cylinder and the guide seat are arranged in a straight line on the tooling platform, the central axis of the guide seat is collinear with the output direction of the manual hydraulic cylinder, and the support surface of the crankshaft disassembly frame assembly is flush with the upper surface of the guide seat.

[0007] Preferably, the gear clamping block consists of two symmetrically arranged arc-shaped blocks, which are detachably connected to the guide seat by bolts. The inner sidewall of the arc-shaped block is provided with a positioning flange that matches the outer circle of the crankshaft gear ring.

[0008] Preferably, the protective block is made of an elastic material, and the end of the protective block near the crankshaft is provided with a groove that matches the shape of the crankshaft end, and a buffer pad is provided in the groove.

[0009] Preferably, the upper surface of the guide seat is provided with an annular positioning groove, the inner diameter of the annular positioning groove is adapted to the outer diameter of the crankshaft gear ring, and the bottom of the gear clamping block is embedded in the annular positioning groove.

[0010] Preferably, the pad is a plurality of metal pads of different thicknesses, and the center of the pad is provided with a through hole for the output end of the manual hydraulic cylinder to pass through. The pad is sandwiched between the protective block and the output end of the manual hydraulic cylinder.

[0011] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model completely avoids deformation and scratches of crankshaft and gear ring during disassembly by using the precise clamping of gear clamping blocks and the elastic buffering of protective blocks, thus reducing the scrap rate of parts; the manual hydraulic cylinder provides stable and controllable thrust, eliminating the need for multiple people to adjust the force, and can be operated by a single person, significantly shortening maintenance time and reducing labor costs.

[0012] 2. This utility model adapts to different specifications of crankshaft gear rings by using detachable gear clamping blocks and replaceable pads, eliminating the need to design tools separately for each model and reducing equipment investment. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0014] Figure 1 This is a schematic diagram of the overall structure of a crankshaft gear ring disassembly device according to the present invention; Explanation of reference numerals in the attached figures: 1. Tooling platform; 2. Manual hydraulic cylinder; 3. Crankshaft disassembly frame assembly; 4. Guide seat; 5. Protective block; 6. Pad block; 7. Gear clamping block; 8. Crankshaft. Detailed Implementation

[0015] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0016] This utility model discloses a crankshaft gear ring disassembly device.

[0017] This utility model provides, for example Figure 1 The crankshaft gear ring disassembly device shown includes a tooling platform 1 and a manual hydraulic cylinder 2. A guide seat 4 is fixedly installed on the upper surface of the tooling platform 1. A gear clamping block 7 for fixing the crankshaft gear ring is provided on the top of the guide seat 4. The manual hydraulic cylinder 2 is vertically installed on the tooling platform 1 and located on one side of the guide seat 4. The output end of the manual hydraulic cylinder 2 is arranged facing the guide seat 4, and a protective block 5 and a pad block 6 are detachably connected to the end of the output end in sequence. The protective block 5 is axially corresponding to the crankshaft 8 to be disassembled. The guide seat 4 and the gear clamping block 7 form a clamping structure for limiting the radial displacement of the crankshaft gear ring. The tooling platform 1 is also provided with a crankshaft disassembly frame assembly 3 for supporting the crankshaft 8. The crankshaft disassembly frame assembly 3 is located on the side of the guide seat 4 away from the manual hydraulic cylinder 2.

[0018] Further, the tooling platform 1 is placed on a horizontal working surface, and a guide seat 4 is fixedly installed on the upper surface of the tooling platform 1. A connection position for installing the gear clamping block 7 is reserved on the top of the guide seat 4. The manual hydraulic cylinder 2 is vertically fixed on the tooling platform 1, and the hydraulic cylinder is located on one side of the guide seat 4, ensuring that the output end of the hydraulic cylinder faces the guide seat 4. The pad block 6 and the protective block 5 are connected in sequence to the output end of the manual hydraulic cylinder 2, and the connection is detachable by bolts or buckles. The position of the protective block 5 is adjusted so that it corresponds to the axial direction of the crankshaft 8 to be disassembled. Finally, on the side of the guide seat 4 away from the manual hydraulic cylinder 2, the crankshaft disassembly frame assembly 3 is fixed on the tooling platform 1 to complete the overall assembly of the device.

[0019] In use, place the crankshaft gear ring on the guide seat 4 and fix the gear ring by the gear clamping block 7. One end of the crankshaft 8 is supported on the crankshaft disassembly bracket assembly 3, and the other end is in contact with the protective block 5. Operate the manual hydraulic cylinder 2 to output thrust, which can push the crankshaft 8 to separate from the gear ring and realize disassembly.

[0020] The manual hydraulic cylinder 2 and the guide seat 4 are arranged in a straight line on the tooling platform 1. The central axis of the guide seat 4 is collinear with the output direction of the manual hydraulic cylinder 2. The support surface of the crankshaft disassembly frame assembly 3 is flush with the upper surface of the guide seat 4.

[0021] Furthermore, adjust the installation positions of the manual hydraulic cylinder 2 and the guide seat 4 on the tooling platform 1 so that they are arranged in a straight line, and the central axis of the guide seat 4 is completely collinear with the output direction of the manual hydraulic cylinder 2; at the same time, adjust the height of the crankshaft disassembly bracket assembly 3 so that the support surface of the assembly is flush with the upper surface of the guide seat 4.

[0022] The gear clamping block 7 consists of two symmetrically arranged arc-shaped blocks. The two arc-shaped blocks are detachably connected to the guide seat 4 by bolts. The inner sidewall of the arc-shaped block is provided with a positioning flange that matches the outer circle of the crankshaft gear ring.

[0023] Furthermore, two symmetrical arc-shaped blocks are selected as gear clamping blocks 7. Positioning flanges that match the outer circle of the B38 crankshaft gear ring are machined on the inner sidewall of the arc-shaped blocks. Bolt holes are machined on the top of the guide seat 4, and the two arc-shaped blocks are fixed to the two sides of the guide seat 4 respectively by bolts, so that the positioning flanges fit tightly with the outer circle of the gear ring. If it is necessary to disassemble gear rings of different specifications, simply unscrew the bolts and replace the arc-shaped blocks with positioning flanges of the corresponding size to achieve quick adaptation without modifying the main structure of the guide seat 4.

[0024] The protective block 5 is made of elastic material. The end of the protective block 5 near the crankshaft 8 is provided with a groove that matches the shape of the crankshaft end, and a buffer pad is provided in the groove.

[0025] Furthermore, the protective block 5 is made of elastic rubber or polyurethane material. At the end of the protective block 5 near the crankshaft 8, a groove is machined to fit the shape of the crankshaft end, such as round or square. A flexible buffer pad, such as a silicone pad, is pasted on the inner wall of the groove. When the manual hydraulic cylinder 2 pushes the protective block 5, the groove fits precisely with the crankshaft end, the buffer pad absorbs the thrust impact, and the elastic material avoids rigid contact, effectively preventing deformation or scratches on the crankshaft end.

[0026] The upper surface of the guide seat 4 is provided with an annular positioning groove, the inner diameter of which is adapted to the outer diameter of the crankshaft gear ring, and the bottom of the gear clamping block 7 is embedded in the annular positioning groove.

[0027] Furthermore, an annular positioning groove is machined along the circumferential direction on the upper surface of the guide seat 4, and the inner diameter of the annular positioning groove is consistent with the outer diameter of the crankshaft gear ring to be disassembled; a protrusion adapted to the annular positioning groove is machined on the bottom of the gear clamping block 7; when installing the gear ring, the gear ring is first placed into the annular positioning groove to achieve preliminary positioning; then the protrusion at the bottom of the gear clamping block 7 is embedded into the annular positioning groove and fits against the outer circle of the gear ring.

[0028] The pad 6 consists of multiple metal pads of different thicknesses. The center of the pad 6 has a through hole for the output end of the manual hydraulic cylinder 2 to pass through. The pad 6 is sandwiched between the protective block 5 and the output end of the manual hydraulic cylinder 2.

[0029] Furthermore, prepare multiple metal shims of different thicknesses as shims 6, and machine a circular through hole in the center of each shim 6. The diameter of the through hole is adapted to the outer diameter of the output end of the manual hydraulic cylinder 2. According to the length of the crankshaft 8 to be disassembled, select 1-3 shims 6 of appropriate thickness and put them on the output end of the manual hydraulic cylinder 2 in sequence. Then connect the protective block 5 to the end of the shim 6 away from the hydraulic cylinder. If the crankshaft 8 is long, select a thicker shim 6; if the crankshaft 8 is short, select a thinner shim 6 to ensure that the protective block 5 can be accurately aligned with the end of the crankshaft 8 without adjusting the position of the hydraulic cylinder or tooling platform 1.

[0030] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A crankshaft gear ring disassembly device, comprising a tooling platform (1) and a manual hydraulic cylinder (2), characterized in that, The upper surface of the tooling platform (1) is fixedly provided with a guide seat (4). The top of the guide seat (4) is provided with a gear clamping block (7) for fixing the crankshaft gear ring. The manual hydraulic cylinder (2) is vertically installed on the tooling platform (1) and located on one side of the guide seat (4). The output end of the manual hydraulic cylinder (2) is set towards the guide seat (4), and the output end is detachably connected to a protective block (5) and a pad block (6). The protective block (5) is axially corresponding to the crankshaft (8) to be disassembled. The guide seat (4) and the gear clamping block (7) form a clamping structure for limiting the radial displacement of the crankshaft gear ring. The tooling platform (1) is also provided with a crankshaft disassembly frame assembly (3) for supporting the crankshaft (8). The crankshaft disassembly frame assembly (3) is located on the side of the guide seat (4) away from the manual hydraulic cylinder (2).

2. The crankshaft gear ring disassembly device according to claim 1, characterized in that, The manual hydraulic cylinder (2) and the guide seat (4) are arranged in a straight line on the tooling platform (1). The central axis of the guide seat (4) is collinear with the output direction of the manual hydraulic cylinder (2). The support surface of the crankshaft disassembly frame assembly (3) is flush with the upper surface of the guide seat (4).

3. The crankshaft gear ring disassembly device according to claim 1, characterized in that, The gear clamping block (7) consists of two symmetrically arranged arc-shaped blocks. The two arc-shaped blocks are detachably connected to the guide seat (4) by bolts. The inner sidewall of the arc-shaped block is provided with a positioning flange that matches the outer circle of the crankshaft gear ring.

4. The crankshaft gear ring disassembly device according to claim 1, characterized in that, The protective block (5) is made of elastic material. The end of the protective block (5) near the crankshaft (8) is provided with a groove that matches the shape of the crankshaft end. A buffer pad is provided in the groove.

5. A crankshaft gear ring disassembly device according to claim 1, characterized in that, The upper surface of the guide seat (4) is provided with an annular positioning groove. The inner diameter of the annular positioning groove is adapted to the outer diameter of the crankshaft gear ring. The bottom of the gear clamping block (7) is embedded in the annular positioning groove.

6. A crankshaft gear ring disassembly device according to claim 1, characterized in that, The pad (6) consists of multiple metal pads of different thicknesses. The center of the pad (6) is provided with a through hole for the output end of the manual hydraulic cylinder (2) to pass through. The pad (6) is sandwiched between the protective block (5) and the output end of the manual hydraulic cylinder (2).

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