A stainless steel silencer connecting pipe for an air conditioner

Abstract

The present invention discloses a connecting pipe for an air conditioner stainless steel silencer, which relates to the technical field of pipe connection. It includes a positioning mechanism. A compensation mechanism is arranged inside the positioning mechanism, and a buffer mechanism is arranged above the positioning mechanism. A connecting mechanism is fixedly connected above the buffer mechanism. The positioning mechanism includes a base and a threaded sleeve. In the present invention, the threaded sleeve and the adjusting screw rod are locked by tightening the fixing knob to keep the positions of the first pipe fixing head and the second pipe fixing head stable, maintain their stable docking, and keep the docking of the silencer pipe and the connecting pipe interface neat. When the adjusting screw rod is turned to push the slider to move, the slider is limited by the chute, and the docking of the connecting pipe and the silencer pipe is limited, improving the neatness of the docking of the silencer pipe and the connecting pipe interface, and further reducing the leakage of noise. During the use of the air conditioner, the leaked noise at the connection is sound-insulated by the sound-insulating board to reduce the noise.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline connection, and particularly to a connecting pipe for an air-conditioning stainless steel silencer. Background Art

[0002] During the use of an air conditioner, noise will be generated. The noise can be silenced and reduced through the air-conditioning silencer. The connecting pipe of the air-conditioning silencer needs to be docked with the air-conditioning connecting pipe.

[0003] In the prior art, as the Chinese patent: CN212839932U discloses "a stainless steel connecting pipe for an air-conditioning silencer", which includes a first pipe body and a second pipe body. The first pipe body is provided with a first sleeve, the second pipe body is provided with a second sleeve, the first sleeve is provided with a first boss, the first boss is provided with a fastening groove, the number of the fastening grooves is designed to be three, the second sleeve is provided with a second boss, the second boss is provided with a fastening rod, the number of the fastening rods is designed to be three, the fastening rods are matched with the fastening grooves, and the first boss and the fastening rods are connected by fasteners.

[0004] However, in the prior art, when the pipelines are connected, the positions of the docking ends of the two pipelines cannot be adjusted, resulting in inaccurate positioning at the pipeline connection, causing the pipeline docking to be not tight, and the sound will leak from the pipeline joint, resulting in a decrease in the silencing effect. At the same time, after the pipelines are connected, under the action of thermal expansion and contraction, the stress at the connection will increase, resulting in damage at the connection and causing noise leakage. Summary of the Invention

[0005] The purpose of the present invention is to provide a connecting pipe for an air-conditioning stainless steel silencer, so as to solve the problems in the above background art that when the pipelines are connected, the positions of the docking ends of the two pipelines cannot be adjusted, resulting in inaccurate positioning at the pipeline connection, causing the pipeline docking to be not tight, and the sound will leak from the pipeline joint, resulting in a decrease in the silencing effect. At the same time, after the pipelines are connected, under the action of thermal expansion and contraction, the stress at the connection will increase, resulting in damage at the connection and causing noise leakage.

[0006] To achieve the above purpose, the present invention provides the following technical solution: A connecting pipe for an air-conditioning stainless steel silencer includes a positioning mechanism. A compensation mechanism is arranged inside the positioning mechanism, and a buffer mechanism is arranged above the positioning mechanism. A connecting mechanism is fixedly connected above the buffer mechanism. The positioning mechanism includes a base and a threaded sleeve. A chute is fixedly connected to the surface of the base. A slider is slidably connected inside the chute. A connecting head is fixedly connected to the surface of the slider. A third socket is rotatably connected to the surface of the connecting head. A first plug is inserted into the surface of the third socket. An adjusting screw rod is fixedly connected to the surface of the first plug. The threaded sleeve is fixedly connected to the chute. The adjusting screw rod is threadedly connected to the threaded sleeve;

[0007] The compensation mechanism includes a first slot and a second slot. The first slot is fixedly connected to the slider, and a first plug block is inserted into the first slot. A telescopic rod is fixedly connected to the surface of the first plug block, and a second plug is fixedly connected to one end of the telescopic rod. The second slot is fixedly connected to the chute;

[0008] The buffer mechanism includes a connecting outer tube and a second spring. The connecting outer tube is fixedly connected to the slider, and a connecting inner tube is slidably connected inside the connecting outer tube. A connecting plate is fixedly connected to the top of the connecting inner tube, and a fixing frame is fixedly connected to the surface of the connecting plate. One end of the second spring is fixedly connected to the slider, and the other end of the second spring is fixedly connected to the connecting plate.

[0009] Preferably, the connecting mechanism includes a first pipe fixing head and a second pipe fixing head. A muffler pipe is fixedly connected to the surface of the first pipe fixing head, and a plug board is fixedly connected to the surface of the first pipe fixing head. A connecting pipe is fixedly connected to the surface of the second pipe fixing head, and a sound insulation board is fixedly connected to the surface of the first pipe fixing head.

[0010] Preferably, the plug board is inserted into the second pipe fixing head, the sound insulation board is inserted into the second pipe fixing head, and fixing bolts are arranged on the surface of the second pipe fixing head. The fixing bolts are threadedly connected to the second pipe fixing head, and the fixing bolts are threadedly connected to the plug board.

[0011] Preferably, a fixing knob is arranged on the surface of the threaded sleeve. The fixing knob is threadedly connected to the threaded sleeve, and the fixing knob penetrates through the surface of the threaded sleeve and tightly presses and fixes the surface of the adjusting screw rod.

[0012] Preferably, the adjusting screw rod penetrates through the surface of the chute. The cross section of the first plug is circular, and the diameter of the first plug is smaller than the diameter of the adjusting screw rod.

[0013] Preferably, a first spring is fixedly connected to the surface of the first plug block, and a second plug is fixedly connected to one end of the first spring.

[0014] Preferably, two telescopic rods are arranged on the surface of the first plug block. The two telescopic rods are symmetrically distributed on the surface of the first plug block, and the telescopic rods are located inside the first spring.

[0015] Preferably, the buffer mechanism includes two fixing frames, and the two fixing frames are respectively fixedly connected to the first pipe fixing head and the second pipe fixing head.

[0016] Preferably, the connecting plate is slidably connected to the slider, and the fixing frame is movably connected to the slider.

[0017] Preferably, a limiting groove is provided on the surface of the connecting outer tube, a limiting block is fixedly connected to the surface of the connecting inner tube, the limiting block is located inside the limiting groove and is slidably inserted into the connecting outer tube, a friction rubber block is fixedly connected to the bottom of the connecting inner tube, a friction rubber pad is fixedly connected to the inside of the connecting outer tube, the friction rubber block is closely attached to the inner wall of the connecting outer tube, and the surfaces of the friction rubber block and the friction rubber pad are closely attached.

[0018] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0019] 1. In the present invention, by tightening the fixing knob, the threaded sleeve and the adjusting screw rod are locked to keep the positions of the first pipe fixing head and the second pipe fixing head stable, maintain their stable docking, keep the interface between the silencer pipe and the connecting pipe neatly docked. When the adjusting screw rod is rotated to push the slider to move, the slider is limited by the chute, the docking of the connecting pipe and the silencer pipe is limited, the neatness of the interface between the silencer pipe and the connecting pipe is improved, and the leakage of noise is further reduced. During the use of the air conditioner, the noise leaking from the connection is sound-insulated by the sound-insulating board to reduce the noise.

[0020] 2. In the present invention, when the temperature changes, the connecting pipe and the silencer pipe will undergo thermal expansion and contraction deformation. When the connecting mechanism on the upper part of the buffer mechanism undergoes thermal expansion and contraction, the buffer mechanism will drive the slider to slide along the chute. At this time, the telescopic rod and the first spring undergo telescopic deformation to generate elastic force, compensate for the stress during the thermal expansion and contraction of the connecting mechanism, reduce the acting force of the stress on the connection, and improve the stability of the connection.

[0021] 3. In the present invention, during the use of the air conditioner, vibrations will be generated. The connection is prone to damage under the long-term vibration. The fixing frame moves up and down along the slider, driving the connecting plate and the connecting inner tube to move up and down. At this time, the second spring undergoes telescopic deformation to buffer the vibration. At the same time, the connecting inner tube drives the friction rubber block to slide along the surfaces of the connecting outer tube and the friction rubber pad, and the impact force of the vibration is released by friction, damping and buffering the connecting mechanism and protecting the connection. Description of the Drawings

[0022] Figure 1 is a schematic structural diagram of a connecting pipe of an air conditioner stainless steel silencer of the present invention Figure 1 ;

[0023] Figure 2 is a schematic structural diagram of a connecting pipe of an air conditioner stainless steel silencer of the present invention Figure 2 ;

[0024] Figure 3 is a schematic internal structural diagram of the second pipe fixing head in the connecting pipe of an air conditioner stainless steel silencer of the present invention;

[0025] Figure 4 Schematic diagram of the internal structure of the chute in the stainless - steel silencer connecting pipe of an air conditioner according to the present invention;

[0026] Figure 5 Schematic diagram of the structure of the No. 3 slot in the stainless - steel silencer connecting pipe of an air conditioner according to the present invention;

[0027] Figure 6 Schematic diagram of the internal structure of the slider in the stainless - steel silencer connecting pipe of an air conditioner according to the present invention;

[0028] Figure 7 Schematic diagram of the structure of the connecting outer pipe in the stainless - steel silencer connecting pipe of an air conditioner according to the present invention.

[0029] In the figure: 1. Positioning mechanism; 101. Base; 102. Chute; 103. Slider; 104. Threaded sleeve; 105. Fixed knob; 106. Adjusting lead screw; 107. No. 1 plug; 108. No. 3 slot; 109. Connector; 2. Compensation mechanism; 201. No. 1 slot; 202. No. 1 plug block; 203. Telescopic rod; 204. No. 1 spring; 205. No. 2 slot; 206. No. 2 plug; 3. Buffer mechanism; 301. Fixed frame; 302. Connecting plate; 303. Connecting outer pipe; 304. Connecting inner pipe; 305. No. 2 spring; 306. Friction rubber block; 307. Limiting block; 308. Friction rubber pad; 309. Limiting groove; 4. Connecting mechanism; 401. No. 1 pipe fixing head; 402. Silencer pipe; 403. No. 2 pipe fixing head; 404. Connecting pipe; 405. Fixed bolt; 406. Insertion plate; 407. Sound - insulating board. Embodiment

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention. Example

[0031] Refer to Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5As shown: An air conditioner stainless steel silencer connecting pipe includes a positioning mechanism 1. Inside the positioning mechanism 1, a compensation mechanism 2 is provided. And on the upper part of the positioning mechanism 1, a buffer mechanism 3 is provided. A connecting mechanism 4 is fixedly connected to the upper part of the buffer mechanism 3. The positioning mechanism 1 includes a base 101 and a threaded sleeve 104. On the surface of the base 101, a chute 102 is fixedly connected. Inside the chute 102, a slider 103 is slidably connected. On the surface of the slider 103, a connecting head 109 is fixedly connected. On the surface of the connecting head 109, a third socket 108 is rotatably connected. A first plug 107 is inserted into the surface of the third socket 108. On the surface of the first plug 107, an adjusting screw rod 106 is fixedly connected. The threaded sleeve 104 is fixedly connected to the chute 102. The adjusting screw rod 106 is threadedly connected to the threaded sleeve 104;

[0032] On the surface of the threaded sleeve 104, a fixing knob 105 is provided. The fixing knob 105 is threadedly connected to the threaded sleeve 104. And the fixing knob 105 penetrates through the surface of the threaded sleeve 104 and tightly presses and fixes the surface of the adjusting screw rod 106. The adjusting screw rod 106 penetrates through the surface of the chute 102. The cross-section of the first plug 107 is circular. And the diameter of the first plug 107 is smaller than the diameter of the adjusting screw rod 106. Through the design that the diameter of the first plug 107 is smaller than the diameter of the adjusting screw rod 106, it is convenient to pull out the first plug 107 and the adjusting screw rod 106 from inside the chute 102;

[0033] The connecting mechanism 4 includes a first pipe fixing head 401 and a second pipe fixing head 403. On the surface of the first pipe fixing head 401, a silencer pipe 402 is fixedly connected. And on the surface of the first pipe fixing head 401, a plug board 406 is fixedly connected. On the surface of the second pipe fixing head 403, a connecting pipe 404 is fixedly connected. On the surface of the first pipe fixing head 401, a sound insulation board 407 is fixedly connected. The plug board 406 is inserted into the second pipe fixing head 403. The sound insulation board 407 is inserted into the second pipe fixing head 403. On the surface of the second pipe fixing head 403, a fixing bolt 405 is provided. The fixing bolt 405 is threadedly connected to the second pipe fixing head 403. And the fixing bolt 405 is threadedly connected to the plug board 406.

[0034] Weld the first pipeline fixed head 401 to the silencer pipeline 402, and at the same time weld the connecting pipeline 404 to the second pipeline fixed head 403. After the welding is completed, rotate the adjusting screw rod 106. At this time, the adjusting screw rod 106 will push the first plug 107, the third slot 108 and the connector 109 to move. At this time, under the pushing action of the connector 109, the slider 103 slides along the chute 102. During the movement of the slider 103, the buffer mechanism 3 and the connecting mechanism 4 are driven to move, so that the plug board 406 and the sound insulation board 407 on the surface of the first pipeline fixed head 401 are inserted into the second pipeline fixed head 403. After the second pipeline fixed head 403 is docked, it is threadedly fixed to the second pipeline fixed head 403 and the plug board 406 through the fixing bolt 405, which is convenient for connecting the silencer pipeline 402 and the connecting pipeline 404. During the docking process of the connecting pipeline 404 and the silencer pipeline 402, the threaded sleeve 104 and the adjusting screw rod 106 are locked by tightening the fixing knob 105 to keep the positions of the first pipeline fixed head 401 and the second pipeline fixed head 403 stable, maintain their stable docking, and keep the interfaces of the silencer pipeline 402 and the connecting pipeline 404 neatly docked. When the adjusting screw rod 106 is rotated to push the slider 103 to move, the slider 103 is limited by the chute 102, and the docking of the connecting pipeline 404 and the silencer pipeline 402 is limited, improving the neatness of the interface docking of the silencer pipeline 402 and the connecting pipeline 404, and further reducing the leakage of noise. During the use of the air conditioner, the sound insulation board 407 insulates the noise leaking from the connection part, reducing the noise. Embodiment

[0035] According to Figure 1 、 Figure 3 、 Figure 4 and Figure 5 As shown in

[0036] The compensation mechanism 2 includes a first slot 201 and a second slot 205. The first slot 201 is fixedly connected to the slider 103, and a first plug 202 is inserted into the first slot 201. A telescopic rod 203 is fixedly connected to the surface of the first plug 202. One end of the telescopic rod 203 is fixedly connected to a second plug 206. The second slot 205 is fixedly connected to the chute 102;

[0037] After connecting the connecting pipe 404 to the muffler pipe 402, loosen the fixing knob 105, then screw out and remove the adjusting screw rod 106 from the threaded sleeve 104. Next, insert the first plug block 202 into the first slot 201, and at the same time insert the second plug 206 into the second slot 205. Install the telescopic rod 203 and the first spring 204 between the slider 103 and the chute 102. When the temperature changes, the connecting pipe 404 and the muffler pipe 402 will undergo thermal expansion and contraction deformation. When the connecting mechanism 4 on the upper part of the buffer mechanism 3 undergoes thermal expansion and contraction, the buffer mechanism 3 will drive the slider 103 to slide along the chute 102. At this time, the telescopic rod 203 and the first spring 204 will undergo telescopic deformation, generating elastic force to compensate for the stress during the thermal expansion and contraction of the connecting mechanism 4, reducing the force exerted on the connection by the stress, and improving the stability of the connection. Embodiment

[0038] According to Figure 1 、 Figure 2 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7 As shown, the buffer mechanism 3 includes a connecting outer tube 303 and a second spring 305. The connecting outer tube 303 is fixedly connected to the slider 103, and a connecting inner tube 304 is slidably connected inside the connecting outer tube 303. A connecting plate 302 is fixedly connected to the top of the connecting inner tube 304, and a fixing frame 301 is fixedly connected to the surface of the connecting plate 302. One end of the second spring 305 is fixedly connected to the slider 103, and the other end of the second spring 305 is fixedly connected to the connecting plate 302.

[0039] The connecting plate 302 is slidably connected to the slider 103, the fixing frame 301 is movably connected to the slider 103. A limiting groove 309 is provided on the surface of the connecting outer tube 303, and a limiting block 307 is fixedly connected to the surface of the connecting inner tube 304. The limiting block 307 is located inside the limiting groove 309 and is slidably inserted into the connecting outer tube 303. A friction rubber block 306 is fixedly connected to the bottom of the connecting inner tube 304, and a friction rubber pad 308 is fixedly connected to the inside of the connecting outer tube 303. The friction rubber block 306 is in close contact with the inner wall of the connecting outer tube 303, and the surfaces of the friction rubber block 306 and the friction rubber pad 308 are in close contact.

[0040] During the use of the muffler pipe 402 and the connecting pipe 404, the air conditioner will generate vibrations. The connection is prone to damage under the long-term vibration. By moving the fixing frame 301 up and down along the slider 103, driving the connecting plate 302 and the connecting inner tube 304 to move up and down. At this time, the second spring 305 undergoes telescopic deformation to buffer the vibration. At the same time, the connecting inner tube 304 drives the friction rubber block 306 to slide along the surfaces of the connecting outer tube 303 and the friction rubber pad 308, frictionally releasing the impact force of the vibration, damping and buffering the connecting mechanism 4, and protecting the connection.

[0041] Usage method and working principle of this device: Weld the first pipeline fixed head 401 to the silencer pipeline 402, and at the same time weld the connecting pipeline 404 to the second pipeline fixed head 403. After the welding is completed, rotate the adjusting screw rod 106. At this time, the adjusting screw rod 106 will push the first plug 107, the third slot 108 and the connector 109 to move. At this time, under the pushing action of the connector 109, the slider 103 slides along the chute 102. During the movement of the slider 103, it drives the buffer mechanism 3 and the connecting mechanism 4 to move, so that the plug board 406 and the sound insulation board 407 on the surface of the first pipeline fixed head 401 are inserted into the second pipeline fixed head 403. After the second pipeline fixed head 403 is docked, it is threadedly fixed to the second pipeline fixed head 403 and the plug board 406 through the fixing bolt 405, which is convenient for connecting the silencer pipeline 402 and the connecting pipeline 404. During the docking process of the connecting pipeline 404 and the silencer pipeline 402, lock the threaded sleeve 104 and the adjusting screw rod 106 by tightening the fixing knob 105 to keep the positions of the first pipeline fixed head 401 and the second pipeline fixed head 403 stable, maintain their stable docking, and keep the interfaces of the silencer pipeline 402 and the connecting pipeline 404 neatly docked. When turning the adjusting screw rod 106 to push the slider 103 to move, the slider 103 is limited by the chute 102, and the docking of the connecting pipeline 404 and the silencer pipeline 402 is limited, improving the neatness of the interfaces of the silencer pipeline 402 and the connecting pipeline 404, and further reducing the leakage of noise. During the use of the air conditioner, the sound insulation board 407 insulates the leaked noise at the connection, reducing the noise;

[0042] After connecting the connecting pipeline 404 and the silencer pipeline 402, loosen the fixing knob 105, then screw out and remove the adjusting screw rod 106 from the threaded sleeve 104. Then insert the first plug block 202 into the first slot 201, and at the same time insert the second plug 206 into the second slot 205. Install the telescopic rod 203 and the first spring 204 between the slider 103 and the chute 102. When the temperature changes, the connecting pipeline 404 and the silencer pipeline 402 will undergo thermal expansion and contraction deformation. When the connecting mechanism 4 on the upper part of the buffer mechanism 3 undergoes thermal expansion and contraction, the buffer mechanism 3 will drive the slider 103 to slide along the chute 102. At this time, the telescopic rod 203 and the first spring 204 undergo telescopic deformation, generating elastic force to compensate for the stress during the thermal expansion and contraction of the connecting mechanism 4, reducing the force of the stress on the connection, and improving the stability of the connection;

[0043] Meanwhile, during the operation of the air conditioner, vibrations will be generated in the silencer pipe 402 and the connecting pipe 404. Under the long-term vibration, the connection is prone to damage. By moving the fixing bracket 301 up and down along the slider 103, the connecting plate 302 and the connecting inner pipe 304 are driven to move up and down. At this time, the second spring 305 undergoes telescopic deformation to buffer the vibration. At the same time, the connecting inner pipe 304 drives the friction rubber block 306 to slide along the surfaces of the connecting outer pipe 303 and the friction rubber pad 308, and the impact force of the vibration is released by friction, so as to shock-absorb and buffer the connecting mechanism 4 and protect the connection.

[0044] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A stainless steel silencer connecting pipe for an air conditioner, comprising a positioning mechanism (1), a compensation mechanism (2) is arranged inside the positioning mechanism (1), and a buffer mechanism (3) is arranged above the positioning mechanism (1), a connecting mechanism (4) is fixedly connected above the buffer mechanism (3), and it is characterized in that: The positioning mechanism (1) includes a base (101) and a threaded sleeve (104). A chute (102) is fixedly connected to the surface of the base (101). A slider (103) is slidably connected inside the chute (102). A connection head (109) is fixedly connected to the surface of the slider (103). A third socket (108) is rotatably connected to the surface of the connection head (109). A first plug (107) is inserted into the surface of the third socket (108). An adjustment screw rod (106) is fixedly connected to the surface of the first plug (107). The threaded sleeve (104) is fixedly connected to the chute (102). The adjustment screw rod (106) is threadedly connected to the threaded sleeve (104); The compensation mechanism (2) includes a first socket (201) and a second socket (205). The first socket (201) is fixedly connected to the slider (103), and a first plug block (202) is inserted into the first socket (201). A telescopic rod (203) is fixedly connected to the surface of the first plug block (202). A second plug (206) is fixedly connected to one end of the telescopic rod (203). The second socket (205) is fixedly connected to the chute (102); The buffer mechanism (3) includes a connecting outer tube (303) and a second spring (305). The connecting outer tube (303) is fixedly connected to the slider (103), and a connecting inner tube (304) is slidably connected inside the connecting outer tube (303). A connecting plate (302) is fixedly connected to the top of the connecting inner tube (304). A fixing frame (301) is fixedly connected to the surface of the connecting plate (302). One end of the second spring (305) is fixedly connected to the slider (103), and the other end of the second spring (305) is fixedly connected to the connecting plate (302); The connecting mechanism (4) includes a first pipe fixing head (401) and a second pipe fixing head (403). A muffler pipe (402) is fixedly connected to the surface of the first pipe fixing head (401), and a plug board (406) is fixedly connected to the surface of the first pipe fixing head (401). A connecting pipe (404) is fixedly connected to the surface of the second pipe fixing head (403). A sound insulation board (407) is fixedly connected to the surface of the first pipe fixing head (401). The plug board (406) is inserted into the second pipe fixing head (403). The sound insulation board (407) is inserted into the second pipe fixing head (403). A fixing bolt (405) is arranged on the surface of the second pipe fixing head (403). The fixing bolt (405) is threadedly connected to the second pipe fixing head (403), and the fixing bolt (405) is threadedly connected to the plug board (406); The surface of the threaded sleeve (104) is provided with a fixing knob (105). The fixing knob (105) is threadedly connected to the threaded sleeve (104), and the fixing knob (105) penetrates through the surface of the threaded sleeve (104) and is tightly pressed and fixed to the surface of the adjusting screw rod (106). The adjusting screw rod (106) penetrates through the surface of the sliding groove (102). The cross-section of the first plug (107) is circular, and the diameter of the first plug (107) is smaller than the diameter of the adjusting screw rod (106). The surface of the first plug block (202) is fixedly connected with a first spring (204). One end of the first spring (204) is fixedly connected with a second plug (206). Two telescopic rods (203) are arranged on the surface of the first plug block (202). The two telescopic rods (203) are symmetrically distributed on the surface of the first plug block (202), and the telescopic rods (203) are located inside the first spring (204); The buffer mechanism (3) includes two fixing frames (301). The two fixing frames (301) are respectively fixedly connected to the first pipeline fixed head (401) and the second pipeline fixed head (403). The connecting plate (302) is slidably connected to the slider (103). The fixing frame (301) is movably connected to the slider (103). A limiting groove (309) is arranged on the surface of the connecting outer pipe (303). A limiting block (307) is fixedly connected to the surface of the connecting inner pipe (304). The limiting block (307) is located inside the limiting groove (309) and is slidably inserted into the connecting outer pipe (303). A friction rubber block (306) is fixedly connected to the bottom of the connecting inner pipe (304). A friction rubber pad (308) is fixedly connected to the inside of the connecting outer pipe (303). The friction rubber block (306) is in close fit with the inner wall of the connecting outer pipe (303), and the surface of the friction rubber block (306) is in close fit with the friction rubber pad (308); Weld the first pipe fixing head (401) to the silencer pipe (402), and at the same time weld the connecting pipe (404) to the second pipe fixing head (403). After the welding is completed, rotate the adjusting screw rod (106). At this time, the adjusting screw rod (106) will push the first plug (107), the third slot (108) and the connecting head (109) to move. At this time, under the pushing action of the connecting head (109), the slider (103) slides along the chute (102). During the movement of the slider (103), the buffer mechanism (3) and the connecting mechanism (4) are driven to move, so that the plug board (406) and the sound insulation board (407) on the surface of the first pipe fixing head (401) are inserted into the second pipe fixing head (403). After the second pipe fixing head (403) is docked, it is threadedly fixed to the second pipe fixing head (403) and the plug board (406) through the fixing bolt (405), which is convenient for connecting the silencer pipe (402) and the connecting pipe (404). During the docking process of the connecting pipe (404) and the silencer pipe (402), lock the threaded sleeve (104) and the adjusting screw rod (106) by tightening the fixing knob (105) to keep the positions of the first pipe fixing head (401) and the second pipe fixing head (403) stable.

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