Piston with inner portion and outer portion symmetrically welded

Abstract

The piston comprises a pair of piston bodies, the piston bodies are symmetrically arranged and connected through a welding seam, a pair of supports are symmetrically arranged in the piston bodies, a tensioning assembly is arranged between the supports, the tensioning assembly comprises an adjusting frame, the adjusting frame is arranged between the supports, and the adjusting frame is arranged between the supports. And an adjusting groove is formed in the adjusting frame, a rotating piece is arranged in the adjusting groove, and the center of the rotating piece penetrates through and is fixedly connected with a two-way lead screw. According to the piston with the inner portion and the outer portion symmetrically welded, the limiting frames are inserted into the support, the rotating piece in the adjusting groove is rotated to drive the two-way lead screw to rotate, the two-way lead screw drives the moving blocks to be close to each other along the limiting rods, and meanwhile the moving blocks drive the limiting frames to be close to each other and tension the support. The connection strength between welding seams of the piston body is enhanced through the support, and the stability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of piston, concretely is a piston of internal and external symmetrical welding. BACKGROUND

[0002] The piston design of internal and external symmetrical welding is usually applied in high-performance engines, especially in the case of needing to optimize structure, reduce weight, improve durability and ensure stable operation under high strength and high temperature.

[0003] The prior art (publication number: CN204984624U) discloses a kind of symmetrical welding piston, and the welding seam position of the piston body of the device is reasonably arranged, suitable for processing.

[0004] But the above-mentioned device is weak in connection at welding position when using due to the fact that reinforcing structure is not arranged at welding position, which reduces the stability of the device.

[0005] Therefore, an internal and external symmetrical welding piston is needed to solve the above problems. UTILITY MODEL CONTENT

[0006] The utility model aims at providing an internal and external symmetrical welding piston to solve the problem of weak connection at welding position due to the fact that reinforcing structure is not arranged at welding position in the background art.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: an internal and external symmetrical welding piston, comprising a pair of piston bodies, the piston bodies are symmetrically arranged and connected through welding seam, a pair of supports are symmetrically arranged in the piston bodies, a tensioning assembly is arranged between the supports, the tensioning assembly comprises an adjusting frame, the adjusting frame is arranged between the supports, an adjusting groove is formed in the inside of the adjusting frame, a rotating member is arranged in the inside of the adjusting groove, a bidirectional screw rod is fixedly connected at the center of the rotating member and penetrates through the adjusting frame, the two ends of the bidirectional screw rod penetrate through the adjusting frame and are rotatably connected thereto, moving blocks are threadedly connected to the two ends of the outer wall of the bidirectional screw rod, limit frames are fixedly connected to the opposite ends of the moving blocks, the limit frames are arranged in the supports, limit rods are fixedly connected to the two ends of the adjusting frame, the limit rods penetrate through the moving blocks and are slidably connected thereto.

[0008] Preferably, the side cross section of the support is L-shaped.

[0009] Preferably, the rotating member is a knob.

[0010] Preferably, the cross section of the top and bottom of the limit frame is quadrangular.

[0011] Preferably, a limit assembly is arranged at one end of the rotating member.

[0012] Preferably, the limiting assembly comprises a moving groove, the moving groove is arranged at one end of the adjusting groove, the inside of the moving groove is fixedly connected with a spring, one end of the spring is fixedly connected with a wedge-shaped block, and the edge of one end of the rotating piece is fixedly connected with a plurality of ratchet teeth.

[0013] Preferably, the wedge-shaped block and the moving groove are in sliding connection.

[0014] Preferably, the inclined surface of the wedge-shaped block and the inclined surface of the ratchet tooth are adjacently arranged.

[0015] Compared with the prior art, the piston of the utility model has the beneficial effects that:

[0016] The piston of the utility model is internally and externally symmetrical, by inserting the limiting frame into the support, rotating the rotating piece in the adjusting groove to drive the bidirectional screw rod to rotate, the bidirectional screw rod drives the moving block to move along the limiting rod to approach each other, the moving block drives the limiting frame to approach each other and tightens the support, thereby strengthening the connecting strength between the welding seams of the piston body through the support, and the stability of the device is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the axial view of the utility model;

[0018] Figure 2 is the bottom view of the utility model;

[0019] Figure 3 is the partial exploded view of the utility model;

[0020] Figure 4 is the structure schematic diagram of the tensioning assembly of the utility model;

[0021] Figure 5 is the structure schematic diagram of the limiting assembly of the utility model.

[0022] In the drawing: 1, piston body; 2, welding seam; 3, support; 4, tensioning assembly; 401, adjusting frame; 402, adjusting groove; 403, rotating piece; 404, bidirectional screw rod; 405, moving block; 406, limiting frame; 407, limiting rod; 5, limiting assembly; 501, moving groove; 502, spring; 503, wedge-shaped block; 504, ratchet tooth. DETAILED DESCRIPTION

[0023] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0024] Please refer to Figures 1-5 The utility model provides a kind of piston of internal and external symmetry welding, including a pair of piston body 1, piston body 1 is symmetrically arranged and is connected by weld 2, the inside of piston body 1 is symmetrically provided with a pair of support 3, and tensioning assembly 4 is arranged between support 3, and tensioning assembly 4 includes adjusting frame 401, adjusting frame 401 is arranged between support 3, adjusting groove 402 is formed in the inside of adjusting frame 401, rotating member 403 is provided in the inside of adjusting groove 402, the center of rotating member 403 is penetrated and is fixedly connected with bidirectional screw rod 404, the both ends of bidirectional screw rod 404 are penetrated adjusting frame 401 and are rotationally connected with it, and the both ends of outer wall of bidirectional screw rod 404 are all screw-connected with moving block 405, and the opposite end of moving block 405 is all fixedly connected with limit frame 406, and limit frame 406 is arranged in support 3, the both ends of adjusting frame 401 are all fixedly connected with limit rod 407, limit rod 407 is penetrated moving block 405 and is slidably connected with it, and the cross section of one side of support 3 is L type, rotating member 403 is knob, and the cross section of top and bottom of limit frame 406 is quadrilateral.

[0025] In the embodiment, by inserting limit frame 406 into the inside of support 3, rotating rotating member 403 in the inside of adjusting groove 402 drives bidirectional screw rod 404 to rotate, bidirectional screw rod 404 drives moving block 405 to approach each other along limit rod 407, and moving block 405 drives limit frame 406 to approach each other and tightens support 3, so as to strengthen the connection strength between weld 2 of piston body 1 by support 3, and improve the stability of the device.

[0026] One end of rotating member 403 is provided with limit component 5, and limit component 5 includes moving groove 501, moving groove 501 is formed in one end of adjusting groove 402, spring 502 is fixedly connected in the inside of moving groove 501, one end of spring 502 is fixedly connected with wedge block 503, and the edge of one end of rotating member 403 is fixedly connected with a plurality of ratchet teeth 504, wedge block 503 and moving groove 501 are slidably connected, and the inclined surface of wedge block 503 and the inclined surface of ratchet tooth 504 are adjacently arranged.

[0027] When the rotating member 403 rotates, the inclined surface of the ratchet tooth 504 pushes the wedge block 503 along the inclined surface of the wedge block 503 one by one to compress the spring 502 and slide to the inside of the moving groove 501, when the ratchet tooth 504 moves away, the spring 502 pushes the wedge block 503 to pop out from the inside of the moving groove 501, and the rotating position of the rotating member 403 is limited by the ratchet tooth 504, preventing the rotating member 403 from sliding and affecting the tensioning effect of the tensioning assembly 4, and improving the stability of the device.

[0028] Working principle:

[0029] First, insert the limiting frame 406 into the support 3;

[0030] Next, rotate the rotating member 403 to drive the ratchet tooth 504 to rotate and be limited by the wedge block 503;

[0031] Then, synchronously, the rotating member 403 drives the limiting frame 406 to approach each other and tension the support 3, so as to strengthen the connection strength between the welds 2 of the piston body 1 through the support 3;

[0032] Finally, as shown in the publication number: CN204984624U, the normal installation and use of the piston body 1 are completed.

[0033] Among them, it needs to be emphasized that in the present application, the piston body 1 and the weld 2 are prior art disclosed in the publication number: CN204984624U.

[0034] It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting the claims involved.

Claims

1. A piston with internal and external symmetrical welds comprising a pair of piston bodies (1) characterized in that: The piston body (1) is symmetrically arranged and connected through a weld (2), the inside of the piston body (1) is symmetrically provided with a pair of supports (3), a tensioning assembly (4) is arranged between the supports (3), the tensioning assembly (4) comprises an adjusting frame (401), the adjusting frame (401) is arranged between the supports (3), an adjusting groove (402) is formed in the inside of the adjusting frame (401), a rotating piece (403) is arranged in the inside of the adjusting groove (402), a bidirectional screw rod (404) is fixedly connected at the center of the rotating piece (403), the two ends of the bidirectional screw rod (404) penetrate through the adjusting frame (401) and are rotationally connected therewith, the two ends of the outer wall of the bidirectional screw rod (404) are both threadedly connected with a moving block (405), the opposite ends of the moving block (405) are both fixedly connected with a limiting frame (406), the limiting frame (406) is arranged in the support (3), the two ends of the adjusting frame (401) are both fixedly connected with a limiting rod (407), the limiting rod (407) penetrates through the moving block (405) and is slidably connected therewith.

2. A piston of the type having internal and external symmetrical welds as defined in claim 1, characterized in that: The side cross section of the support (3) is L-shaped.

3. A piston of internal and external symmetrical weld as defined in claim 1, wherein: The rotating piece (403) is a knob.

4. A piston of internal and external symmetrical weld as defined in claim 1, wherein: The top and bottom of the limiting frame (406) are quadrangular in cross section.

5. A piston of internal and external symmetrical weld as defined in claim 1, wherein: One end of the rotating piece (403) is provided with a limiting assembly (5).

6. A piston of the type having internal and external symmetrical welds as defined in claim 5, wherein: The limiting assembly (5) comprises a moving groove (501), the moving groove (501) is formed at one end of the adjusting groove (402), a spring (502) is fixedly connected in the inside of the moving groove (501), one end of the spring (502) is fixedly connected with a wedge-shaped block (503), a plurality of ratchet teeth (504) are fixedly connected at the edge of one end of the rotating piece (403).

7. A piston of the type having internal and external symmetrical welds as defined in claim 6 wherein: The wedge-shaped block (503) and the moving groove (501) are slidably connected.

8. A piston of the type having internal and external symmetrical welds as defined in claim 6, wherein: The inclined surface of the wedge-shaped block (503) and the inclined surface of the ratchet tooth (504) are adjacently arranged. The wedge-shaped block (503) and the moving groove (501) are slidably connected. The inclined surface of the wedge-shaped block (503) and the inclined surface of the ratchet tooth (504) are adjacently arranged.

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