Diesel engine piston dismounting and hoisting tool

Abstract

The utility model discloses a diesel engine piston dismounting and hoisting tool, which relates to the technical field of diesel engine piston dismounting and hoisting tools and comprises a chuck, the chuck is circular, the diameter of the chuck is smaller than that of a combustion chamber at the top of a piston, a threaded groove and a through groove are arranged at the top of the chuck, and the threaded groove is positioned in the center of the chuck and is circular. The threaded groove and the through grooves penetrate through the chuck, the through grooves are square, the number of the through grooves is four, the through grooves are distributed in the threaded groove in a circumferential array mode, the through grooves are all perpendicular to the threaded groove, the outer ends of the through grooves are flush with the outer end of the chuck, grooves are formed in the inner walls of the two sides of each through groove, the grooves are square, and the grooves are symmetrically distributed in the through grooves. The piston hoisting device has the advantages that the use is simple, the operation is convenient, and the piston can be effectively prevented from being damaged due to the friction between the piston and the clamping block when the piston is hoisted.

Description

Technical Field

[0001] The utility model relates to the technical field of diesel engine piston disassembly and hoisting tooling, in particular to a diesel engine piston disassembly and hoisting tooling. Background Art

[0002] The piston is a reciprocating part in the cylinder block of a car engine. The basic structure of the piston can be divided into the top, the head and the skirt. The top of the piston is the main part of the combustion chamber, and its shape is related to the type of combustion chamber selected. Gasoline engines mostly use flat-top pistons, which have the advantage of a small heat absorption area. There are often various pits on the top of the diesel engine piston. Their specific shape, position and size must be adapted to the requirements of the diesel engine's mixture formation and combustion. Most of the existing piston top cavities are equipped with limit parts. The top of the conventional diesel engine piston will reserve a threaded hole for the installation of the lifting ring. You only need to screw the lifting ring into the threaded hole to easily and quickly lift out the piston. Dual-fuel diesel engines are generally diesel engines that use diesel and natural gas as their main fuels.

[0003] A piston disassembly lifting tool disclosed in the Chinese utility model patent application disclosure CN218950830U solves the problem of low work efficiency, but the piston disassembly lifting tool still has the following disadvantages: First, when the piston is disassembled by lifting, the hook in the above-mentioned piston disassembly lifting tool needs to be rotated from top to bottom when inserted into the piston combustion chamber, and the hook will cause scratches on the top of the piston combustion chamber when rotating. If the scratch is too large, it will even affect the normal use of the piston; Second, when the above-mentioned piston disassembly lifting tool is used to lift the piston, the outer edge diameter of the hook is small, so the resistance between the hook and the piston is small. If the piston is stuck, the hook will move upward during lifting, and the piston cannot be taken out at one time, so it is necessary to repeat the lifting many times, wasting time. Utility Model Content

[0004] In view of the deficiencies in the prior art, the utility model provides a diesel engine piston disassembly and lifting tool, which solves the problems raised in the above-mentioned background technology.

[0005] To achieve the above objectives, the utility model is implemented through the following technical solutions: a diesel engine piston disassembly and lifting tool, including a chuck, the chuck is circular, the diameter of the chuck is smaller than the diameter of the combustion chamber at the top of the piston, a thread groove and a through groove are provided on the top of the chuck, the thread groove is located at the center of the chuck, the thread groove is circular, the thread groove and the through groove both penetrate the chuck, the through groove is square, there are four through grooves, the through grooves are distributed in a circular array on the thread groove, the through grooves are perpendicular to the thread groove, the outer end of the through groove is flush with the outer end of the chuck, the inner walls on both sides of the through groove are provided with grooves, the grooves are square, the grooves are symmetrically distributed on the through grooves, a spring is fixedly installed on the end of the groove away from the thread groove, there are eight springs, and the springs correspond to the grooves one by one.

[0006] Optionally, a first clamping block is fixedly connected to one end of the spring close to the threaded groove, and the first clamping block is T-shaped. The two ends of the first clamping block are respectively slidably connected to the corresponding inner walls of the groove and are consistent with the height of the groove. The left and right side walls of the outer end of the first clamping block are slidably connected to the inner wall of the through groove, and the top of the inner wall of the first clamping block is arc-shaped.

[0007] Optionally, the outer side wall of the outer end of the first card block is fixedly connected to a second card block, the second card block is made of rubber, the outer side wall of the second card block is arc-shaped, the height of the second card block is consistent with that of the first card block, and the two side walls of the second card block are slidably connected to the inner wall of the through groove.

[0008] Optionally, the inner wall of the thread groove is threadedly connected with a bolt, the length of the bolt is greater than the thread groove, the top of the bolt is fixedly connected with a hanging plate, the hanging plate is circular, the diameter of the hanging plate is smaller than the chuck, the center of the circle of the hanging plate is consistent with the chuck, the top of the hanging plate is fixedly connected with a fixing rod, the fixing rod is cylindrical, there are two fixing rods, the fixing rods are symmetrically distributed on the hanging plate, and the top of the fixing rod is fixedly connected with a hook, and the hook is semicircular.

[0009] Optionally, a slide groove is provided at the bottom of the hanging plate, and the slide groove is in the shape of a circular ring cone. The major diameter of the slide groove is smaller than the diameter of the hanging plate, and the minor diameter of the slide groove is larger than the major diameter of the bolt. The inner wall of the slide groove is slidably connected with a rotating disk, and the rotating disk is circular. The diameter of the rotating disk is smaller than the chuck, and the rotating disk is rotatably connected to the bolt. A third clamping block is fixedly connected to the bottom of the rotating disk.

[0010] Optionally, there are four third clamping blocks, and the third clamping blocks are distributed in a circular array on the rotating disk. The third clamping blocks correspond to the through slots one by one, and the inner side wall of the third clamping block is flush with the side of the through slot close to the threaded groove. The third clamping block is perpendicular to the through slot, and the outer bottom of the third clamping block is arc-shaped, and the left and right side walls of the third clamping block are slidably connected to the left and right inner walls of the through slot.

[0011] The utility model provides a diesel engine piston disassembly and lifting tool, which has the following beneficial effects:

[0012] 1. The diesel engine piston disassembly and lifting tool has two ends of the first clamping block respectively connected with the corresponding inner wall of the groove by sliding, and the second clamping block is made of rubber, so that the diesel engine piston disassembly and lifting tool has the effect of avoiding large-scale movement of the hook and preventing the piston from being scratched. Through the coordinated setting of the second clamping block and the first clamping block, the second clamping block can be made to fit tightly against the inner wall of the piston during use, thereby preventing the piston from being damaged.

[0013] 2. The diesel engine piston disassembly and lifting tool has an arc-shaped outer bottom of the third clamping block, so that the diesel engine piston disassembly and lifting tool has the effect of allowing the third clamping block to smoothly enter the through groove. Through the coordinated arrangement of the third clamping block and the rotating disk, the third clamping block can be slid downward along the through groove during use, thereby playing a role in extruding the second clamping block and the third clamping block outward, thereby achieving the purpose of increasing the friction force on the piston. By setting the second clamping block to be made of rubber, the friction with the piston can be further increased. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional schematic diagram of the entire utility model;

[0015] Figure 2 It is the overall front view of the utility model;

[0016] Figure 3 This is a schematic diagram of the overall bottom of the utility model;

[0017] Figure 4 This is a schematic cross-sectional view of the bottom of the utility model as a whole;

[0018] Figure 5 It is a schematic front sectional view of the utility model as a whole.

[0019] In the figure: 1. chuck; 2. threaded groove; 3. through groove; 4. groove; 5. spring; 6. first clamping block; 7. second clamping block; 8. bolt; 9. hanging plate; 10. slide groove; 11. rotating plate; 12. third clamping block; 13. fixing rod; 14. hook. 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. Example

[0021] See also Figures 1 to 5 The utility model provides a technical solution: a diesel engine piston disassembly and lifting tool, including a chuck 1, the chuck 1 is circular, the diameter of the chuck 1 is smaller than the diameter of the combustion chamber at the top of the piston, a thread groove 2 and a through groove 3 are provided on the top of the chuck 1, the thread groove 2 is located at the center of the chuck 1, the thread groove 2 is circular, the thread groove 2 and the through groove 3 both penetrate the chuck 1, the through groove 3 is square, there are four through grooves 3, the through grooves 3 are distributed in a circular array with the thread groove 2, the through grooves 3 are perpendicular to the thread groove 2, the outer ends of the through grooves 3 are flush with the outer ends of the chuck 1, the inner walls on both sides of the through groove 3 are provided with grooves 4, the grooves 4 are square, the grooves 4 are symmetrically distributed with the through groove 3, and the end of the groove 4 away from the thread groove 2 is fixed A spring 5 is fixedly installed, and there are eight springs 5. The springs 5 ​​correspond to the grooves 4 one by one. One end of the spring 5 close to the threaded groove 2 is fixedly connected with a first clamping block 6, and the first clamping block 6 is T-shaped. The two ends of the first clamping block 6 are respectively slidably connected with the corresponding inner walls of the groove 4 and are consistent with the height of the groove 4. The left and right side walls of the outer end of the first clamping block 6 are slidably connected with the inner wall of the through groove 3, and the top of the inner side wall of the first clamping block 6 is arc-shaped. The outer side wall of the outer end of the first clamping block 6 is fixedly connected with a second clamping block 7. The second clamping block 7 is made of rubber, and the outer side wall of the second clamping block 7 is arc-shaped. The height of the second clamping block 7 is consistent with that of the first clamping block 6, and the two side walls of the second clamping block 7 are slidably connected with the inner wall of the through groove 3.

[0022] During use, when the piston is disassembled by lifting, the hook in the existing piston disassembly lifting tool needs to be rotated from top to bottom when inserted into the piston combustion chamber, and the hook will cause scratches on the top of the piston combustion chamber when rotating. If the scratch is too large, it will even affect the normal use of the piston. Therefore, there is a diesel engine piston disassembly lifting tool. When using the lifting tool to disassemble the piston, first place the chuck 1 flat into the piston. At this time, the first clamping block 6 and the second clamping block 7 are located inside the through groove 3 due to the elastic force of the spring 5, and the second clamping block 7 cannot contact the inner wall of the piston. Then, the lifting plate 9 is rotated to rotate the bolt 8, and the bolt 8 enters the bottom of the chuck 1 along the threaded groove 2, and the first clamping block 6 and the second clamping block 7 are pushed outward, and the second clamping block 7 is tightly attached to the inner wall of the piston. Because the outer wall of the second clamping block 7 is arc-shaped and the material of the second clamping block 7 is rubber, the second clamping block 7 is completely tightly attached to the inner wall of the piston, and the piston can be prevented from being damaged. Example

[0023] See also Figures 1 to 5The utility model provides a technical solution: a diesel engine piston disassembly and lifting tool, the inner wall of the thread groove 2 is threadedly connected with a bolt 8, the length of the bolt 8 is greater than the thread groove 2, the top of the bolt 8 is fixedly connected with a hanging plate 9, the hanging plate 9 is circular, the diameter of the hanging plate 9 is smaller than the chuck 1, the center of the hanging plate 9 is consistent with the chuck 1, the top of the hanging plate 9 is fixedly connected with a fixing rod 13, the fixing rod 13 is cylindrical, there are two fixing rods 13, the fixing rods 13 are symmetrically distributed on the hanging plate 9, the top of the fixing rod 13 is fixedly connected with a hook 14, the hook 14 is semicircular, and a slide groove 10 is provided at the bottom of the hanging plate 9, the slide groove 10 is in the shape of a circular ring table, and the major diameter of the slide groove 10 is smaller than the diameter of the hanging plate 9 The small diameter of the slide groove 10 is larger than the large diameter of the bolt 8. The inner wall of the slide groove 10 is slidably connected with a rotating disk 11. The rotating disk 11 is circular. The diameter of the rotating disk 11 is smaller than the chuck 1. The rotating disk 11 is rotatably connected to the bolt 8. The bottom of the rotating disk 11 is fixedly connected with a third clamping block 12. There are four third clamping blocks 12. The third clamping blocks 12 are distributed in a circular array on the rotating disk 11. The third clamping blocks 12 correspond to the through grooves 3 one by one. The inner side wall of the third clamping block 12 is flush with the side of the through groove 3 close to the thread groove 2. The third clamping block 12 is vertical to the through groove 3. The outer bottom of the third clamping block 12 is arc-shaped, and the left and right side walls of the third clamping block 12 are slidably connected to the left and right side inner walls of the through groove 3.

[0024] When in use, the existing piston disassembly lifting tool has a small resistance between the hook and the piston due to the small diameter of the outer edge of the hook when lifting the piston. If the piston is stuck, the hook will move upward during lifting, and the piston cannot be taken out at one time, so it is necessary to lift repeatedly, which wastes time. Therefore, there is a diesel engine piston disassembly lifting tool. After the chuck 1 is placed in the piston, the lifting plate 9 is rotated, and the bolt 8 moves downward along the threaded groove 2. When the lifting plate 9 rotates, the inner wall of the slide groove 10 is slidably connected with the rotating plate 11. At the same time, because the left and right side walls of the third clamping block 12 are located in the through groove 3, the third clamping block 12 moves downward along the through groove 3. Because the outer bottom of the third clamping block 12 is in an arc shape and the top of the inner wall of the first clamping block 6 is in an arc shape, the third clamping block 12 can smoothly enter the through groove 3. At this time, the first clamping block 6 and the second clamping block 7 move outward due to the extrusion of the third clamping block 12. Because the second clamping block 7 is made of rubber, the friction between the second clamping block 7 and the piston can be increased, so that the piston can be better lifted.

[0025] 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 diesel engine piston disassembly and lifting tool, comprising a chuck (1), characterized in that: The chuck (1) is circular, and the diameter of the chuck (1) is smaller than the diameter of the combustion chamber at the top of the piston. The top of the chuck (1) is provided with a thread groove (2) and a through groove (3). The thread groove (2) is located at the center of the chuck (1). The thread groove (2) is circular. The thread groove (2) and the through groove (3) both penetrate the chuck (1). The through groove (3) is square. There are four through grooves (3). The through grooves (3) are distributed in a circular array on the thread groove (2). The through grooves (3) are perpendicular to the thread groove (2). The outer ends of the through grooves (3) are flush with the outer ends of the chuck (1). Grooves (4) are provided on the inner walls of both sides of the through groove (3). The grooves (4) are square. The grooves (4) are symmetrically distributed on the through groove (3). A spring (5) is fixedly mounted on one end of the groove (4) away from the thread groove (2). There are eight springs (5), and the springs (5) correspond to the grooves (4) one by one.

2. A diesel engine piston disassembly and lifting tool according to claim 1, characterized in that: A first clamping block (6) is fixedly connected to one end of the spring (5) close to the thread groove (2); the first clamping block (6) is T-shaped; both ends of the first clamping block (6) are respectively slidably connected to the inner wall of the corresponding groove (4) and are at the same height as the groove (4); the left and right side walls of the outer end of the first clamping block (6) are slidably connected to the inner wall of the through groove (3); and the top of the inner wall of the first clamping block (6) is arc-shaped.

3. A diesel engine piston disassembly and lifting tool according to claim 2, characterized in that: The outer side wall of the outer end of the first clamping block (6) is fixedly connected to a second clamping block (7); the second clamping block (7) is made of rubber; the outer side wall of the second clamping block (7) is in an arc shape; the height of the second clamping block (7) is consistent with that of the first clamping block (6); and the two side walls of the second clamping block (7) are slidably connected to the inner wall of the through groove (3).

4. The diesel engine piston disassembly and lifting tool according to claim 1, characterized in that: The inner wall of the threaded groove (2) is threadedly connected with a bolt (8), the length of the bolt (8) is greater than the threaded groove (2), the top of the bolt (8) is fixedly connected with a hanging plate (9), the hanging plate (9) is circular, the diameter of the hanging plate (9) is smaller than the chuck (1), the center of the circle of the hanging plate (9) is consistent with the chuck (1), the top of the hanging plate (9) is fixedly connected with a fixing rod (13), the fixing rod (13) is cylindrical, there are two fixing rods (13), the fixing rods (13) are symmetrically distributed on the hanging plate (9), and the top of the fixing rod (13) is fixedly connected with a hook (14), and the hook (14) is semi-circular.

5. The diesel engine piston disassembly and lifting tool according to claim 4 is characterized in that: A slide groove (10) is provided at the bottom of the hanging plate (9). The slide groove (10) is in the shape of a circular ring. The major diameter of the slide groove (10) is smaller than the diameter of the hanging plate (9), and the minor diameter of the slide groove (10) is larger than the major diameter of the bolt (8). A rotating disk (11) is slidably connected to the inner wall of the slide groove (10). The rotating disk (11) is circular and has a diameter smaller than that of the chuck (1). The rotating disk (11) is rotatably connected to the bolt (8), and a third clamping block (12) is fixedly connected to the bottom of the rotating disk (11).

6. A diesel engine piston disassembly and lifting tool according to claim 5, characterized in that: There are four third clamping blocks (12), which are distributed in a circumferential array on the rotating disk (11). The third clamping blocks (12) correspond to the through slots (3) one by one. The inner side wall of the third clamping block (12) is flush with a side of the through slot (3) close to the threaded groove (2). The third clamping block (12) is perpendicular to the through slot (3). The outer bottom of the third clamping block (12) is in an arc shape. The left and right side walls of the third clamping block (12) are slidably connected to the left and right side inner walls of the through slot (3).

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