Tool for disassembling piston
By designing a tooling including screws, mounting plates, telescopic devices and reverse top bolts, the safety hazards and labor intensity of traditional methods are solved when disassembling the piston, and a fast and safe piston disassembly and efficient workflow is achieved.
Patent Information
- Application Number
- CN202421513201.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-28
- Publication Date
- 2025-04-11
- Estimated Expiration
- 2034-06-28
AI Technical Summary
The prior art has safety hazards when disassembling the piston, has high labor intensity and is difficult to control the force, which is easy to damage the piston, and the traditional method is not suitable for the situation where the piston is stuck in the cylinder.
A tooling including a screw, a mounting plate, a telescopic device and a reverse top bolt is designed. Through the cooperation of the screw and a telescopic device, the piston can be quickly jammed and the tooling is lifted through a lifting ring to remove the piston.
The rapid disassembly of the piston is achieved, which improves the disassembly efficiency, reduces labor intensity, and avoids piston damage, while reducing safety hazards for operators.
Smart Images
Figure CN222741358U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of piston tooling, and more specifically, to a tooling for disassembling a piston. Background Art
[0002] The piston is a reciprocating part in the cylinder block of a car engine. The basic structure of a 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.
[0003] The piston plays an extremely important role when the engine is started. The piston is used to withstand gas pressure and drive the crankshaft to rotate through the piston pin. As the central part of the automobile engine, the requirements for the piston are becoming more and more stringent. It is difficult to remove the piston during the disassembly and inspection process, which is very easy to cause the piston to fall, bump and other damages, seriously affecting the reuse of the piston and even affecting the progress of product development. For the removal of the piston, the traditional method is for the operator to reach his hand under the piston in the crankcase and use a wooden stick to push the piston upward from the cylinder. This method is very unsafe and labor-intensive. The strength of disassembling the piston varies from person to person and is difficult to grasp. It is easy to damage the piston, especially when the piston bites the cylinder, the piston is stuck in the gas canopy, and it will be very difficult to disassemble the piston. At the same time, due to insufficient protection during the disassembly process, it is easy to cause safety hazards to the disassembly personnel, which brings inconvenience to the disassembly process and has been gradually eliminated. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a tool for disassembling a piston in view of the above-mentioned deficiencies in the prior art, so as to shorten the time required for disassembling the piston, improve the work efficiency of disassembling the piston, avoid damage to the piston during the disassembly process, and greatly reduce the labor intensity of the operating workers.
[0005] The technical solution of the utility model is as follows: a tool for disassembling a piston, comprising a screw rod and a mounting plate, a bottom plate being provided at one end of the screw rod, an intermediate plate being provided at a middle movable sleeve of the screw rod, a clamping nut being threadedly connected to the screw rod, an elastic device for supporting the intermediate plate being provided on the bottom plate, a telescopic device being provided between the bottom plate and the intermediate plate, at least two of the telescopic devices, the telescopic device comprising a first connecting rod and a second connecting rod, one end of the first connecting rod being hinged to the intermediate plate, one end of the second connecting rod being hinged to the bottom plate, and the other ends of the first connecting rod and the second connecting rod being hinged to two ends of the mounting plate respectively, a first connecting plate being provided in the middle of the mounting plate, a second connecting plate being provided at one end of the first connecting plate, and a counter-top bolt being threadedly connected to the second connecting plate.
[0006] As a further improvement, the center axis of the counter-top bolt and the center axis of the screw rod are perpendicular to each other.
[0007] Furthermore, the bottom plate and the middle plate are both cylindrical, and the central axes of the screw, the bottom plate and the middle plate coincide with each other.
[0008] Furthermore, there are four telescopic devices, and the four telescopic devices are evenly distributed on the middle plate in a circular shape with the central axis of the screw as the center.
[0009] Furthermore, a reinforcing plate is provided on the first connecting plate, and the other end of the reinforcing plate is connected to the end surface of the second connecting plate.
[0010] Furthermore, a sleeve is sleeved on the screw rod, and the sleeve is located between the clamping nut and the middle plate.
[0011] Furthermore, the elastic device comprises a spring, one end of the spring is connected to the bottom plate, and the other end of the spring is connected to the bottom of the middle plate.
[0012] Furthermore, one end of the reverse top bolt is a smooth arc surface.
[0013] Furthermore, a limiting plate is provided at the other end of the screw.
[0014] Furthermore, a movable sleeve at the other end of the screw rod is provided with a lifting ring, and the lifting ring is located between the clamping nut and the limiting plate.
[0015] Beneficial Effects
[0016] Compared with the prior art, the utility model has the following advantages:
[0017] The utility model provides a tool for disassembling a piston, which can quickly disassemble the piston from the cylinder sleeve of an engine, effectively improves the disassembly efficiency of the piston, shortens the time required for disassembly, and effectively reduces the labor intensity of operators. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 This is a schematic diagram of the main cross-sectional structure of the utility model;
[0019] Figure 2 It is a schematic diagram of the top view structure of the utility model;
[0020] Figure 3 It is an enlarged schematic diagram of the structure of the first connecting plate and the second connecting plate in the utility model.
[0021] Among them: 1-piston, 2-screw, 3-lifting ring, 4-bottom plate, 5-middle plate, 6-spring, 7-mounting plate, 8-limiting plate, 9-reverse top bolt, 10-first connecting rod, 11-second connecting rod, 12-tightening nut, 13-sleeve, 14-first connecting plate, 15-second connecting plate, 16-reinforcement plate. DETAILED DESCRIPTION
[0022] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.
[0023] See also Figure 1-3 , a tool for disassembling a piston, comprising a screw rod 2 and a mounting plate 7, a bottom plate 4 is provided at one end of the screw rod 2, an intermediate plate 5 is provided at the middle movable sleeve of the screw rod 2, a clamping nut 12 is threadedly connected to the screw rod 2, when in use, the bottom of the clamping nut 12 contacts one end of the sleeve 13, and the other end of the top sleeve 13 of the intermediate plate 5 contacts; an elastic device for supporting the intermediate plate 5 is provided on the bottom plate 4, a telescopic device is provided between the bottom plate 4 and the intermediate plate 5, and there are at least two telescopic devices, the telescopic device comprises a first connecting rod 10 and a second connecting rod 11, one end of the first connecting rod 10 is hinged to the intermediate plate 5, one end of the second connecting rod 11 is hinged to the bottom plate 4, and the other ends of the first connecting rod 10 and the second connecting rod 11 are respectively hinged to the two ends of the mounting plate 7, a first connecting plate 14 is provided in the middle of the mounting plate 7, a second connecting plate 15 is provided at one end of the first connecting plate 14, and a reverse top bolt is threadedly connected to the second connecting plate 15 9. One end of the anti-top bolt 9 contacts the inner wall of the piston 1 cavity; when the piston 1 is disassembled, the tool is located in the cavity of the piston 1. When the clamping nut 12 is tightened downward, the middle plate 5 is pressed down by the sleeve 13, and the telescopic device hinged on the middle plate 5 extends outward, so that the anti-top screw 9 on the second connecting rod 15 moves toward the inner wall of the piston 1 cavity, and then the anti-top screw 9 is tightened so that one end of the four anti-top screws 9 contacts the inner wall of the piston 1 cavity, thereby achieving the effect of clamping the piston 1 through the tool, and then the lifting ring 3 is connected to a lifting device such as a crane, and the tool is lifted by the lifting device, so as to remove the piston 1 from the cylinder liner. The tool can quickly remove the piston 1 from the cylinder liner, shorten the time required for disassembling the piston 1, greatly improve the work efficiency of disassembling the piston 1, and at the same time avoid damage to the piston 1 during the disassembly process, and greatly reduce the labor intensity of the operating workers.
[0024] In this embodiment, the center axis of the counter-thrust bolt 9 and the center axis of the screw rod 2 are perpendicular to each other, so that the cavity of the piston 1 can be better clamped by the counter-thrust bolt 9 .
[0025] In this embodiment, the bottom plate 4 and the middle plate 5 are both cylindrical, and the central axes of the screw 2, the bottom plate 4, and the middle plate 5 coincide, ensuring that the force conditions of the four telescopic devices are consistent during the disassembly process, shortening the time required for disassembly, and further improving the efficiency of disassembling the piston 1; there are four telescopic devices in total, and the four telescopic devices are evenly distributed on the middle plate 5 in a circle with the central axis of the screw 2 as the center. When the tool is located in the cavity of the piston 1, the four telescopic devices are extended by tightening the clamping nut 12 downward, and the corresponding anti-top screw 9 is close to the inner wall of the cavity of the piston 1, and then the anti-top screw 9 is tightened so that one end of the anti-top screw 9 contacts the inner body of the cavity of the piston 1, thereby clamping the piston 1 and achieving the purpose of removing the piston 1 from the cylinder liner; the four telescopic devices can better clamp the cavity of the piston 1 to avoid the tool falling off during the disassembly process and causing damage to the piston 1.
[0026] In this embodiment, a reinforcing plate 16 is provided on the first connecting plate 14, and the other end of the reinforcing plate 16 is connected to the end surface of the second connecting plate 15, so as to strengthen the connection strength between the first connecting plate 14 and the second connecting plate 15, thereby preventing the first connecting plate 14 and the second connecting plate 15 from breaking at the connection point during the disassembly of the piston 1.
[0027] In this embodiment, a sleeve 13 is sleeved on the screw rod 2, and the sleeve 13 is located between the clamping nut 12 and the middle plate 5. When the clamping nut 12 is tightened downward, the sleeve 13 moves downward, thereby achieving the purpose of pressing the middle plate 5 downward. By adding the sleeve 13 between the middle plate 5 and the clamping nut 12, the clamping nut 12 is located in the middle and upper part of the screw rod 2, which makes it easy to screw the clamping nut 12.
[0028] In this embodiment, the elastic device includes a spring 6, one end of which is connected to the bottom plate 4, and the other end of the spring 6 is connected to the bottom of the middle plate 5; the spring 6 supports the middle plate 5 and the sleeve 13 above the middle plate 5. When the clamping nut 12 is tightened downward, the middle plate 5 is pressed down by the sleeve 13, and the telescopic device hinged on the middle plate 5 extends outward, so that the counter-top screw 9 on the second connecting rod 15 moves toward the inner wall of the piston 1 cavity. At this time, the spring 6 is in a compressed state; when the piston 1 is disassembled, the clamping nut 12 is screwed upward, and the spring 6 rebounds, causing the middle plate 5 to move upward, thereby causing the telescopic device to retract inward.
[0029] In this embodiment, one end of the anti-thrust bolt 9 is a smooth arc surface, so as to prevent the anti-thrust bolt 9 from contacting the inner wall of the piston 1 cavity and causing damage to the inner wall of the piston 1 cavity during the process of disassembling the piston 1.
[0030] In this embodiment, a limit plate 8 is provided at the other end of the screw rod 2. When the lifting ring 3 is connected to a lifting device such as an overhead crane or a forklift, the lifting ring 3 moves upward, and the limit plate 8 provided at the other end of the screw rod 2 limits the movement of the lifting ring 3, thereby achieving the purpose of lifting the tooling through the lifting ring 3.
[0031] In this embodiment, a lifting ring 3 is movably sleeved on the other end of the screw rod 2. The lifting ring 3 is located between the clamping nut 12 and the limiting plate 8. A through hole is opened on the lifting ring 3. The lifting ring 3 is sleeved on the screw rod 2 through the through hole. The clamping nut 12 and the limiting plate 8 on the screw rod 2 limit the movement range of the lifting ring 3 to prevent the lifting ring 3 from detaching from the screw rod 2.
[0032] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.
Claims
1. A tool for disassembling a piston, characterized in that: The invention comprises a screw rod (2) and a mounting plate (7), wherein a bottom plate (4) is provided at one end of the screw rod (2), an intermediate plate (5) is provided in a movable sleeve in the middle of the screw rod (2), a clamping nut (12) is threadedly connected to the screw rod (2), an elastic device for supporting the intermediate plate (5) is provided on the bottom plate (4), a telescopic device is provided between the bottom plate (4) and the intermediate plate (5), and at least two telescopic devices are provided, the telescopic device comprises a first connecting rod (10) and a second connecting rod (11), one end of the first connecting rod (10) is hinged to the intermediate plate (5), one end of the second connecting rod (11) is hinged to the bottom plate (4), and the other ends of the first connecting rod (10) and the second connecting rod (11) are respectively hinged to the two ends of the mounting plate (7), a first connecting plate (14) is provided in the middle of the mounting plate (7), one end of the first connecting plate (14) is provided with a second connecting plate (15), and a counter-top bolt (9) is threadedly connected to the second connecting plate (15).
2. A tool for disassembling a piston according to claim 1, characterized in that: The central axis of the counter-top bolt (9) and the central axis of the screw rod (2) are perpendicular to each other.
3. A tool for disassembling a piston according to claim 1, characterized in that: The bottom plate (4) and the middle plate (5) are both cylindrical, and the central axes of the screw rod (2), the bottom plate (4) and the middle plate (5) coincide with each other.
4. A tool for disassembling a piston according to claim 3, characterized in that: There are four telescopic devices in total, and the four telescopic devices are evenly distributed on the middle plate (5) in a circular shape with the central axis of the screw rod (2) as the center.
5. The tool for disassembling a piston according to claim 1, characterized in that: A reinforcing plate (16) is provided on the first connecting plate (14), and the other end of the reinforcing plate (16) is connected to the end surface of the second connecting plate (15).
6. A tool for disassembling a piston according to claim 1, characterized in that: The screw rod (2) is sleeved with a sleeve (13), and the sleeve (13) is located between the clamping nut (12) and the middle plate (5).
7. A tool for disassembling a piston according to claim 1, characterized in that: The elastic device comprises a spring (6), one end of the spring (6) is connected to the bottom plate (4), and the other end of the spring (6) is connected to the bottom of the middle plate (5).
8. The tool for disassembling a piston according to claim 1, characterized in that: One end of the reverse push bolt (9) is a smooth cambered surface.
9. The tool for disassembling a piston according to claim 1, characterized in that: A limiting plate (8) is provided at the other end of the screw rod (2).
10. A tool for disassembling a piston according to claim 9, characterized in that: The other end of the screw rod (2) is provided with a lifting ring (3) on the movable sleeve, and the lifting ring (3) is located between the clamping nut (12) and the limiting plate (8).