Diesel engine crankshaft convenient to disassemble
By designing a limit device on the crankshaft of the diesel engine, the crankshaft is easily disassembled, solving the problem of low crankshaft disassembly efficiency in the prior art, and improving maintenance efficiency and equipment safety.
Patent Information
- Application Number
- CN202421453872.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-25
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2034-06-25
AI Technical Summary
During maintenance and maintenance, existing engine crankshafts require staff to carry tools to remove the entire crankshaft, which increases the workload of staff and reduces the removal efficiency.
A diesel engine crankshaft is designed for easy disassembly, and adopts a limiting device, including the main shaft journal, the rotating sleeve, the rotating column, the connecting rod, the square block, the sliding block and the return spring. Through the cooperation of these components, the crankshaft is easily disassembled.
Through the design of the limiting device, the crankshaft can be easily disassembled, which reduces the workload of staff, improves the maintenance and maintenance efficiency of the crankshaft, and improves the stability of the crankshaft connection and the safety of the equipment.
Smart Images
Figure CN222577127U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical engineering, in particular to a diesel engine crankshaft which is easy to disassemble. Background Art
[0002] The crankshaft is the main rotating part of the engine. The material of the crankshaft is mostly made of carbon structural steel or ductile iron. The crankshaft has two important parts, the main journal and the connecting rod journal. The rotation of the crankshaft is not only the power source of the engine but also the source of power of the entire mechanical system.
[0003] When the existing engine crankshaft needs to be maintained and overhauled after long-term use, the staff is required to carry tools to disassemble the entire engine crankshaft for maintenance and overhaul, which increases the workload of the staff and reduces the disassembly efficiency of the engine crankshaft. Utility Model Content
[0004] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a diesel engine crankshaft that is easy to disassemble, which can solve the problem that when the engine crankshaft needs maintenance and overhaul after long-term use, the staff needs to carry tools to disassemble the entire engine crankshaft for maintenance and overhaul, which increases the workload of the staff and reduces the disassembly efficiency of the engine crankshaft.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a diesel engine crankshaft that is easy to disassemble, comprising a connecting shaft, on which a limiting device is provided;
[0006] The limiting device includes a main journal, a rotating sleeve and a rotating column;
[0007] A connecting shaft groove is provided on the outer wall of one end of the main shaft neck, the rotating sleeve is rotatably connected to the outer wall of one end of the connecting shaft, a fixed block is fixedly connected to the outer wall of one end of the connecting shaft, a fixed block groove is provided on the outer wall of the rotating sleeve, the outer wall of the fixed block is slidably connected to the inner wall of the fixed block groove, and the rotating column is rotatably connected inside one end of the main shaft neck;
[0008] Among them, a connecting rod is slidably connected inside the arc-shaped groove opened on the outer wall of the connecting shaft, a coil spring groove is opened inside the connecting shaft, a coil spring is arranged inside the coil spring groove, a square block is fixedly connected to the end of the rotating column away from the rotating sleeve, four first sliding block grooves are opened on the outer wall of the end of the connecting shaft away from the rotating sleeve, sliding blocks are slidably connected inside the four first sliding block grooves, the outer wall of one end of the connecting shaft is slidably connected to the inside of the connecting shaft groove, and four second sliding block grooves are opened inside the connecting shaft groove.
[0009] Preferably, a connecting journal is installed at one end of the main journal away from the connecting shaft;
[0010] Among them, the fixed block slot is in an "arc" shape;
[0011] Wherein, the two ends of the connecting rod are fixedly connected to the inner wall of the rotating sleeve and the outer wall of the rotating column respectively;
[0012] Wherein, the two ends of the coil spring are fixedly connected to the outer wall of the rotating column and the inner wall of the coil spring groove respectively;
[0013] Wherein, one end of the sliding block close to the square block slides and extends to the inside of the connecting shaft and is rotatably connected with the four corners of the square block;
[0014] Wherein, one end of the four sliding blocks close to the second sliding block grooves is respectively in contact with the inner wall of the corresponding second sliding block grooves.
[0015] Preferably, the interior of the groove opened inside the fixing block groove is slidably connected to a limiting block.
[0016] Preferably, the outer wall of the limiting block contacts the outer wall of the fixing block.
[0017] Preferably, three return springs are arranged inside the groove opened inside the fixing block groove.
[0018] Preferably, two ends of the return spring are respectively fixedly connected to an outer wall of one end of the limiting block and an inner wall of a groove opened inside the fixing block groove.
[0019] Compared with the prior art, the utility model has the following beneficial effects: the diesel engine crankshaft that is easy to disassemble, through the limit device, then twisting the rotating sleeve to rotate through the connecting rod to drive the rotating column to rotate, and then through the rotating column rotation to drive the square block to rotate while driving the sliding block to move in the opposite direction, and then the sliding block moves in the opposite direction so that its other end is out of contact with the inside of the second sliding block groove, and then the main journal and the connecting journal can be removed from the connecting shaft, so that it is easy to disassemble the crankshaft, avoiding the staff carrying tools to disassemble the entire engine crankshaft for maintenance and overhaul, effectively reducing the workload of the staff, and improving the maintenance and overhaul efficiency of the crankshaft. The diesel engine crankshaft that is easy to disassemble, by pushing the limit block to enter the groove opened in the fixed block groove, drives the return spring to contract to make the fixed block lose the limit, so that the limit block limits the fixed block while completing the limit of the rotating sleeve, effectively improving the stability of the crankshaft connection, and improving the safety of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments:
[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0022] Figure 2It is a schematic diagram of the structure inside the main journal of the utility model;
[0023] Figure 3 This is a schematic diagram of the structure inside the connecting shaft of the utility model;
[0024] Figure 4 It is a schematic diagram of the structure of the outer part of the rotating column of the utility model.
[0025] Figure numerals: 1, connecting shaft; 2, limit block; 3, rotating sleeve; 4, fixed block; 5, connecting shaft neck; 6, main shaft neck; 7, fixed block groove; 8, first sliding block groove; 9, connecting shaft groove; 10, sliding block; 11, second sliding block groove; 12, connecting rod; 13, square block; 14, coil spring; 15, coil spring groove; 16, rotating column; 17, return spring. DETAILED DESCRIPTION
[0026] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model. In the description of the utility model, it should be understood that the directions or positional relationships indicated by the description of the orientation, such as up, down, front, back, left, right, etc., are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.
[0027] In the description of the present utility model, greater than, less than, and exceeding are understood as not including the number itself, and above, below, and within are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features, and it cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of the indicated technical features. In the description of the present utility model, unless otherwise clearly defined, the terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above terms in the present utility model in combination with the specific content of the technical solution.
[0028] See also Figure 1-4 , the utility model provides a technical solution: a diesel engine crankshaft that is easy to disassemble, including a connecting shaft 1;
[0029] A limiting device is provided on the connecting shaft 1;
[0030] The limiting device includes a main journal 6, a rotating sleeve 3 and a rotating column 16. A connecting shaft groove 9 is provided on the outer wall of one end of the main journal 6. The rotating sleeve 3 is rotatably connected to the outer wall of one end of the connecting shaft 1. A fixed block 4 is fixedly connected to the outer wall of one end of the connecting shaft 1. A fixed block groove 7 is provided on the outer wall of the rotating sleeve 3. The fixed block groove 7 is in an "arc" shape. The outer wall of the fixed block 4 is slidably connected to the inner wall of the fixed block groove 7. The rotating column 16 is rotatably connected inside one end of the main journal 6. A connecting rod 12 is slidably connected inside the arc groove provided on the outer wall of the connecting shaft 1. The two ends of the connecting rod 12 are fixedly connected to the inner wall of the rotating sleeve 3 and the outer wall of the rotating column 16 respectively. A coil spring groove 15 is provided inside the connecting shaft 1. A coil spring 14 is arranged inside the coil spring groove 15. The two ends of 14 are respectively fixedly connected to the outer wall of the rotating column 16 and the inner wall of the coil spring groove 15, the end of the rotating column 16 away from the rotating sleeve 3 is fixedly connected to the square block 13, the outer wall of the end of the connecting shaft 1 away from the rotating sleeve 3 is provided with four first sliding block grooves 8, the insides of the four first sliding block grooves 8 are all slidably connected with sliding blocks 10, the end of the sliding block 10 close to the square block 13 slides and extends to the inside of the connecting shaft 1 and is rotatably connected with the four corners of the square block 13, the outer wall of one end of the connecting shaft 1 is slidably connected with the inside of the connecting shaft groove 9, the inside of the connecting shaft groove 9 is provided with four second sliding block grooves 11, and the ends of the four sliding blocks 10 close to the second sliding block grooves 11 are respectively in contact with the inner walls of the corresponding second sliding block grooves 11.
[0031] Among them, a connecting journal 5 is installed at one end of the main journal 6 away from the connecting shaft 1, the groove opened inside the fixed block groove 7 is slidably connected to the limiting block 2, the outer wall of the limiting block 2 is in contact with the outer wall of the fixed block 4, and three return springs 17 are arranged inside the groove opened inside the fixed block groove 7, and the two ends of the three return springs 17 are respectively fixedly connected to the outer wall of one end of the limiting block 2 and the inner wall of the groove opened inside the fixed block groove 7.
[0032] Furthermore, when the device is used, it is started by connecting an external power source, firstly the entire crankshaft is installed inside the external part through the connecting shaft 1, and then the entire crankshaft is driven to operate by the operation of the external device.
[0033] Furthermore, when the crankshaft needs to be disassembled, the limit block 2 is pushed to make it enter the groove opened inside the fixed block groove 7, while driving the return spring 17 to contract to make the fixed block 4 lose the limit, and then the rotating sleeve 3 is twisted to rotate through the connecting rod 12 to drive the rotating column 16 to rotate, and then the rotating column 16 rotates to drive the square block 13 to rotate while driving the sliding block 10 to move in the opposite direction, and then the sliding block 10 moves in the opposite direction so that the other end of it is out of contact with the inside of the second sliding block groove 11, and then the main journal 6 and the connecting journal 5 can be removed from the connecting shaft 1.
[0034] After that, the cam 12 is released, and the cam 13 is released, so that the cam 12 can be easily removed from the bearing 14. When the cam 12 is released, the bearing 14 can be easily removed from the bearing 14.
[0035] Working principle: first, the entire crankshaft is installed inside the exterior through the connecting shaft 1, and then the entire crankshaft is driven to operate through the operation of the external equipment. Then, when the crankshaft needs to be removed, the limit block 2 is pushed to make it enter the groove opened inside the fixed block groove 7, while driving the return spring 17 to contract to make the fixed block 4 lose the limit. Then, the rotating sleeve 3 is rotated to drive the rotating column 16 to rotate through the connecting rod 12, and then the rotating column 16 rotates to drive the square block 13 to rotate while driving the sliding block 10 to move in the opposite direction. Then the sliding block 10 moves in the opposite direction so that its other end is out of contact with the inside of the second sliding block groove 11, and then the main journal 6 and the connecting journal 5 can be removed from the connecting shaft 1.
[0036] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.
Claims
1. A diesel engine crankshaft that is easy to disassemble, comprising a connecting shaft (1), characterized in that: A limiting device is provided on the connecting shaft (1); The limiting device comprises a main shaft journal (6), a rotating sleeve (3) and a rotating column (16); The outer wall of one end of the main shaft journal (6) is provided with a connecting shaft groove (9), the rotating sleeve (3) is rotatably connected to the outer wall of one end of the connecting shaft (1), the outer wall of one end of the connecting shaft (1) is fixedly connected to a fixing block (4), the outer wall of the rotating sleeve (3) is provided with a fixing block groove (7), the outer wall of the fixing block (4) is slidably connected to the inner wall of the fixing block groove (7), and the rotating column (16) is rotatably connected inside one end of the main shaft journal (6); The connecting rod (12) is slidably connected to the inside of the arc-shaped groove formed on the outer wall of the connecting shaft (1), a coil spring groove (15) is formed on the inside of the connecting shaft (1), a coil spring (14) is arranged on the inside of the coil spring groove (15), a square block (13) is fixedly connected to the end of the rotating column (16) away from the rotating sleeve (3), four first sliding block grooves (8) are formed on the outer wall of the end of the connecting shaft (1) away from the rotating sleeve (3), the inside of the four first sliding block grooves (8) are all slidably connected to the sliding blocks (10), the outer wall of one end of the connecting shaft (1) is slidably connected to the inside of the connecting shaft groove (9), and four second sliding block grooves (11) are formed on the inside of the connecting shaft groove (9).
2. The easily disassembled diesel engine crankshaft according to claim 1, characterized in that: A connecting journal (5) is mounted on one end of the main journal (6) away from the connecting shaft (1); Wherein, the fixing block groove (7) is in an "arc" shape; Wherein, the two ends of the connecting rod (12) are respectively fixedly connected to the inner wall of the rotating sleeve (3) and the outer wall of the rotating column (16); Wherein, two ends of the coil spring (14) are respectively fixedly connected to the outer wall of the rotating column (16) and the inner wall of the coil spring groove (15); Wherein, one end of the sliding block (10) close to the square block (13) slides and extends to the inside of the connecting shaft (1) and is rotatably connected with the four corners of the square block (13) accordingly; Wherein, one end of the four sliding blocks (10) close to the second sliding block groove (11) is in contact with the inner wall of the corresponding second sliding block groove (11) respectively.
3. The easily disassembled diesel engine crankshaft according to claim 1, characterized in that: The interior of the groove opened inside the fixed block groove (7) is slidably connected to the limiting block (2).
4. The easily disassembled diesel engine crankshaft according to claim 3, characterized in that: The outer wall of the limiting block (2) contacts the outer wall of the fixing block (4).
5. The easily disassembled diesel engine crankshaft according to claim 1, characterized in that: Three return springs (17) are arranged inside the groove opened inside the fixed block groove (7).
6. The easily disassembled diesel engine crankshaft according to claim 5, characterized in that: The two ends of the return spring (17) are respectively fixedly connected to an outer wall of one end of the limit block (2) and an inner wall of a groove opened inside the fixed block groove (7).