Automobile pipeline air pressure detection device

Abstract

The present invention relates to the technical field of hose sealing, and specifically to an automobile pipeline air pressure detection device, comprising a frame, on which a plurality of detection heads and plugging heads are arranged at intervals, each detection head and plugging head is provided with a sleeve mechanism and a clamping mechanism; the sleeve mechanism comprises a driving ring, on which a plurality of expansion components are arranged, and the plurality of expansion components are arranged equidistantly around the driving ring, and the expansion components can expand and contract the end of the pipeline during the movement of the driving ring. Through the arrangement of the detection head, the plugging head, the sleeve mechanism and the clamping mechanism, the staff only needs to place the end of the pipeline on the sleeve mechanism to automatically sleeve the end of the pipeline with the detection head and the plugging head, without the need for manual sleeve connection of the pipeline, and at the same time, through the interval arrangement of the detection head and the plugging head, the plugging head does not need to be individually blocked manually, so that the two ends of the pipeline can be sleeved at the same time, further reducing the burden on the staff.

Description

Technical Field

[0001] The invention relates to the technical field of hose sealing, in particular to an automobile pipeline air pressure detection device. Background Art

[0002] After the production of automotive internal rubber pipe fittings, their sealing performance needs to be tested to determine whether their sealing performance can meet the standards. If they fail, the product will need to be scrapped and then redesigned and studied until the product's sealing performance can meet customer requirements. According to existing technology, the existing testing fixtures can only be limited to low-pressure air tightness testing within 0.15MP for hoses, with poor sealing performance, low testing pressure, and low number of tests at one time; it is difficult to install, requires water medium for lubrication, and has high labor intensity.

[0003] Chinese patent CN104483124B discloses a hose air pressure detection clamping assembly device, and Chinese patent CN112747861B discloses a hose ring-type sealing air pressure detection fixture. Both can achieve clamping of the detection end, but a plugging head is generally required at the other end of the pipeline. Chinese patent CN112747861B manually seals the seal on the plugging head and the pipeline. Although this method can seal the pipeline, when large-scale pipeline detection is performed, the manual sealing of the plugging end of the pipeline still has the problem of high labor intensity for the staff, and the equipment needs to be manually operated, and the detection efficiency is low. At the same time, although the above two solutions can clamp the pipeline, the problem of the pipeline being sleeved on the detection end is still not solved, and the pipeline still needs to be manually sleeved, thereby further increasing the burden on the staff. Summary of the invention

[0004] In view of the above problems, a vehicle pipeline air pressure detection device is provided. Through the arrangement of a detection head, a plugging head, a sleeve connection mechanism and a clamping mechanism, the staff only needs to place the end of the pipeline on the sleeve connection mechanism to automatically sleeve the end of the pipeline with the detection head and the plugging head. There is no need to manually sleeve the pipeline. At the same time, through the interval arrangement of the detection head and the plugging head, the plugging head does not need to be manually sealed separately, so that the two ends of the pipeline can be sleeved at the same time, further reducing the burden on the staff.

[0005] To solve the problems of the prior art, an automobile pipeline air pressure detection device comprises a frame, on which a plurality of detection heads and plugging heads are arranged at equal intervals along the length direction of the frame, and the detection heads and the plugging heads are arranged at intervals, and both the detection heads and the plugging heads are cylindrical structures; each of the detection head and the plugging head is provided with a sleeve mechanism for driving the pipeline to move and a clamping mechanism for clamping the end of the pipeline sleeved on the detection head or the plugging head; the sleeve mechanism comprises a driving ring that can move along the axial direction of the detection head or the plugging head, and the driving ring is provided with a plurality of expansion components that can slide along the radial direction thereof, and the plurality of expansion components are equidistantly arranged around the driving ring, and the expansion components can expand and contract the end of the pipeline during the movement of the driving ring.

[0006] Preferably, the extension component includes an extension rod capable of sliding radially along the driving ring, a fixing plate is provided in the middle of the extension rod, a first elastic member is provided between the fixing plate and the inner wall of the driving ring, a support rod parallel to the axis of the driving ring is provided at one end of the extension rod close to the driving ring, and a sliding rod extending in a horizontal state is provided at the other end of the driving ring.

[0007] Preferably, trapezoidal plates are provided on the circumferential side of the driving ring, the number of which is the same as that of the expansion components and which correspond one to one, the two vertical sides of the trapezoidal plates are parallel to the axis of the driving ring, and the shorter vertical side is located on the side away from the driving ring, and the sliding rod can slide along the contour of the trapezoidal plates as the driving ring moves.

[0008] Preferably, a mounting plate is provided on one side of the trapezoidal plate close to the driving ring, a guide track extending along the axial direction of the driving ring is provided on the mounting plate, a guide rod matching the guide track is provided on the driving ring, and both the guide rod and the extension rod pass through the guide track.

[0009] Preferably, the clamping mechanism includes a fixing ring and a plurality of clamping rods, the fixing ring is fixedly connected to the frame, and the fixing ring is coaxially arranged with the driving ring, the diameter of the fixing ring is larger than the diameter of the driving ring, the plurality of clamping rods are equidistantly arranged around the fixing ring, and the clamping rods can be slidably arranged on the fixing ring along the radial direction of the fixing ring.

[0010] Preferably, the clamping mechanism also includes a transmission ring, a second elastic member and connecting rods that are the same in number and correspond one to one with the clamping rod. The transmission ring is located below the fixed ring and is coaxial with the fixed ring, and the transmission ring and the frame are connected by the second elastic member. The transmission ring can slide along the axial direction of the fixed ring. When the driving ring moves to the bottom of the detection head or the sealing head, it can drive the transmission ring to move toward the frame. The connecting rod is located between the transmission ring and the clamping rod, and both ends of the connecting rod are respectively hinged to one end of the center of the force-carrying fixed ring on the clamping rod and the transmission ring.

[0011] Preferably, the bottoms of the detection head and the plugging head are both provided with steps that shrink toward the center of the circle.

[0012] Preferably, the plugging head is a hollow structure, and a valve core that can slide along its axial direction is provided on the top of the plugging head. The valve core is elastically connected to the bottom of the plugging head. A plurality of air holes surrounding its axis are provided on the side wall of the plugging head. An expandable rubber ring is provided on the outer side of the air hole, and the valve core is moved by the gas in the pipeline.

[0013] Preferably, a sealing ring is provided on the valve core.

[0014] Preferably, a driving plate for driving the multiple driving rings to move synchronously is provided below the frame, and the driving plate is driven by a linear drive.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The driving ring of the present invention is located at the top of the detection head or the plugging head in the initial state, and the multiple expansion components are in a retracted state. The two ends of the pipeline to be detected are respectively placed on the multiple expansion components of the sleeve mechanism above the detection head and the plugging head. By starting the driving ring, the driving ring moves from high to low along the axial direction of the detection head or the plugging head, and at the same time, the multiple expansion components move along the radial direction of the driving ring toward the side away from the center of the driving ring. As a result, the multiple expansion components expand the end of the pipeline, so that the diameter of the end of the pipeline is larger than the diameter of the detection head or the plugging head, so that the pipeline can be sleeved on the detection head and the plugging head under the action of the driving ring and the expansion components, and then the pipeline sleeved on the detection head or the plugging head is clamped by the clamping mechanism, the bottom of the detection head is connected to the air pressure detection device, and the plugging head is a sealed cavity. During testing, gas is ejected from the detection head and fills the entire pipeline. The sealing head is used to seal the end of the pipeline so that a certain air pressure value is maintained in the pipeline. By pressurizing or maintaining the pressure on the pipeline, the change in the air pressure in the pipeline is detected. If there is no change, the pipeline is qualified. If the air pressure in the pipeline fluctuates greatly or the air pressure is far away from the set threshold, the pipeline is unqualified. The air pressure of the pipeline is detected in the above manner. Compared with the prior art through the setting of the socket mechanism, the staff only needs to place the end of the pipeline on the socket mechanism to automatically socket the end of the pipeline with the detection head and the plugging head. There is no need to manually socket the pipeline. At the same time, through the interval setting of the detection head and the plugging head, the plugging head does not need to be manually sealed separately, so that the two ends of the pipeline can be socketed at the same time, further reducing the burden on the staff. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a front view of an automobile pipeline air pressure detection device.

[0018] Figure 2 The invention is a three-dimensional structural diagram of a detection head, a plugging head and a pipeline in an automobile pipeline air pressure detection device.

[0019] Figure 3 The invention is a three-dimensional structural schematic diagram of a detection head and a plugging head in an automobile pipeline air pressure detection device.

[0020] Figure 4 The invention is a three-dimensional structural schematic diagram of a detection head, a sleeve connection mechanism and a clamping mechanism in an automobile pipeline air pressure detection device.

[0021] Figure 5 It is a state of operation of the sleeve mechanism and clamping mechanism in the automobile pipeline air pressure detection device. Figure 1 .

[0022] Figure 6 It is a state of operation of the sleeve mechanism and clamping mechanism in the automobile pipeline air pressure detection device. Figure 2 .

[0023] Figure 7 This is a schematic diagram of the cross-sectional results of the plugging head in the automobile pipeline air pressure detection device Figure 1 .

[0024] Figure 8 This is a schematic diagram of the cross-sectional results of the plugging head in the automobile pipeline air pressure detection device Figure 2 .

[0025] Fig. 9 The invention is a three-dimensional structural schematic diagram of a clamping mechanism in an automobile pipeline air pressure detection device.

[0026] Fig.10 The invention is a three-dimensional structural schematic diagram of a sleeve connection mechanism in an automobile pipeline air pressure detection device.

[0027] The numbers in the figure are:

[0028] 1-frame; 11-detection head; 12-sealing head; 121-valve core; 1211-sealing ring; 122-rubber ring; 123-air hole; 13-step; 14-drive plate; 141-linear drive; 142-fixing rod; 2-sleeve mechanism; 21-drive ring; 211-guide rod; 22-extension assembly; 221-extension rod; 222-fixing plate; 223-first elastic member; 224-support rod; 225-sliding rod; 226-trapezoidal plate; 227-mounting plate; 228-guide rail; 3-clamping mechanism; 31-fixing ring; 32-clamping rod; 33-transmission ring; 331-second elastic member; 332-connecting rod; 4-pipeline. DETAILED DESCRIPTION

[0029] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0030] like Figures 1 to 6 As shown: an automobile pipeline air pressure detection device comprises a frame 1, on which a plurality of detection heads 11 and plugging heads 12 are arranged at equal intervals along the length direction of the frame 1, and the detection heads 11 and the plugging heads 12 are arranged at intervals, and both the detection heads 11 and the plugging heads 12 are cylindrical structures; each of the detection heads 11 and the plugging heads 12 is provided with a sleeve connection mechanism 2 for driving the pipeline 4 to move and a clamping mechanism 3 for clamping the end of the pipeline 4 sleeved on the detection head 11 or the plugging head 12; the sleeve connection mechanism 2 comprises a driving ring 21 which can move along the axial direction of the detection head 11 or the plugging head 12, and the driving ring 21 is provided with a plurality of expansion components 22 which can slide along the radial direction thereof, and the plurality of expansion components 22 are arranged around the driving ring 21 at equal intervals, and the expansion components 22 can expand and contract the end of the pipeline 4 during the movement of the driving ring 21.

[0031] The driving ring 21 of the sleeve connection mechanism 2 on the detection head 11 and the plugging head 12 is located at the top of the detection head 11 or the plugging head 12 in the initial state, and the multiple expansion components 22 are in a retracted state. The multiple expansion components 22 are moved toward the center side of the driving ring 21 along the radial direction. At this time, the two ends of the pipeline 4 to be detected are respectively placed on the multiple expansion components 22 of the sleeve connection mechanism 2 above the detection head 11 and the plugging head 12. By starting the driving ring 21, the driving ring 21 is moved from high to low along the axial direction of the detection head 11 or the plugging head 12. At the same time, the multiple expansion components 22 are moved along the radial direction of the driving ring 21 away from the center side of the driving ring 21, thereby the multiple expansion components 22 expand the end of the pipeline 4, so that the end of the pipeline 4 The diameter of the part is larger than the diameter of the detection head 11 or the plugging head 12, so that the pipe 4 can be sleeved on the detection head 11 and the plugging head 12 under the action of the drive ring 21 and the expansion component 22. After the sleeve is completed, since the pipe 4 is made of rubber, the pipe 4 has strong elasticity, and multiple expansion components 22 will return to their initial positions on the drive ring 21 to drive the pipe 4 to reset, so that the pipe 4 is connected to the detection head 11 and the plugging head 12, and then the pipe 4 sleeved on the detection head 11 or the plugging head 12 is clamped by the clamping mechanism 3 to make the pipe 4 sealed. It should be noted that the movement of the drive ring 21 and the expansion component 22 can be achieved by a cylinder or an electric push cylinder. There are many existing technologies, which will not be elaborated again.

[0032] The bottom of the detection head 11 is connected to the air pressure detection device, and the plugging head 12 is a sealed cavity. During the air pressure detection, gas is ejected from the detection head 11 to fill the entire pipeline 4. The plugging head 12 is used to plug the end of the pipeline 4 so that a certain air pressure value is maintained in the pipeline 4. By pressurizing or maintaining the pressure on the pipeline 4, the change of the air pressure in the pipeline 4 is detected. If there is no change, the pipeline 4 is qualified. If the air pressure in the pipeline 4 fluctuates greatly or the air pressure is far away from the set threshold, the pipeline 4 is unqualified. The air pressure of the pipeline 4 is detected in the above manner. Compared with the prior art through the setting of the socket mechanism 2, the staff only needs to place the end of the pipeline 4 on the socket mechanism 2 to automatically socket the end of the pipeline 4 with the detection head 11 and the plugging head 12, without the need for manual socketing of the pipeline 4. At the same time, through the interval setting of the detection head 11 and the plugging head 12, the plugging head 12 does not need to be manually blocked separately, so that the two ends of the pipeline 4 can be socketed at the same time, further reducing the burden on the staff.

[0033] like Figures 1 to 6 and Fig.10 As shown: the extension component 22 includes an extension rod 221 that can slide radially along the driving ring 21, a fixing plate 222 is provided in the middle of the extension rod 221, a first elastic member 223 is provided between the fixing plate 222 and the inner wall of the driving ring 21, a support rod 224 parallel to the axis of the driving ring 21 is provided on one end of the extension rod 221 close to the driving ring 21, and a sliding rod 225 extending in a horizontal state is provided on the other end of the driving ring 21.

[0034] In the initial state of the sleeve mechanism 2, the multiple support rods 224 are all located on one side of the driving ring 21 close to the center of the circle. When it is necessary to drive the pipe 4 to sleeve, the end of the pipe 4 is sleeved on the multiple support rods 224, and the multiple expansion rods 221 surrounding the driving ring 21 are driven by the support rods 224 connected thereto to move radially along the driving ring 21. Since the axes of the support rods 224 and the driving ring 21 are parallel to each other, the support rods 224 can pull the end of the pipe 4 to expand, causing the end of the pipe 4 to deform. At this time, the support rods 224 can drive the end of the pipe 4 to move. As the driving ring 21 moves along the axial direction of the detection head 11 or the plugging head 12, the end of the pipe 4 is driven to be sleeved onto the detection head 11 or the plugging head 12, thereby completing the sleeve connection of the pipe 4, so that the pipe 4 can be automatically sleeved on the detection head 11 and the plugging head 12. Through the setting of the first elastic member 223 and the fixing plate 222, the expansion rod 221 can maintain the same position in the initial state of the elastic member. When it is necessary to drive the expansion rod 221, the sliding rod 225 is pulled to drive the entire expansion rod 221 to move, thereby expanding the end of the pipe 4.

[0035] like Figures 1 to 6 and Fig.10 As shown: the circumferential side of the driving ring 21 is provided with trapezoidal plates 226 of the same number and one-to-one correspondence as the extension components 22, the two vertical sides of the trapezoidal plates 226 are parallel to the axis of the driving ring 21, and the shorter vertical side is located on the side away from the driving ring 21, and the sliding rod 225 can slide along the contour of the trapezoidal plates 226 as the driving ring 21 moves.

[0036] By setting the trapezoidal plate 226, the extension rod 221 will be driven to move during the movement of the driving ring 21, and the extension rod 221 will drive the sliding rod 225 in a horizontal state to move. Due to the action of the first elastic member 223, the extension rod 221 is always located on the side of the driving ring 21 close to its center. When the extension rod 221 drives the sliding rod 225 to move onto the trapezoidal plate 226, the sliding rod 225 will slide along the outer contour of the trapezoidal plate 226, thereby driving the extension rod 221 to move away from the center side of the driving ring 21, thereby enabling the extension rod 221 to drive the end of the pipe 4 to unfold through the support rod 224, so that the support rod 224 can drive the pipe 4 to be mounted on the detection head 11 or the sealing head 12. By setting the trapezoidal plate 226, the extension component 22 can realize its sliding along the driving ring 21 without adding a driving source, thereby reducing the cost of the equipment.

[0037] like Figures 1 to 6 and Fig.10 As shown: a mounting plate 227 is provided on one side of the trapezoidal plate 226 close to the driving ring 21, a guide track 228 extending along the axial direction of the driving ring 21 is provided on the mounting plate 227, a guide rod 211 matching the guide track 228 is provided on the driving ring 21, and the guide rod 211 and the extension rod 221 both pass through the guide track 228.

[0038] By setting the guide rail 228 and the guide rod 211, the drive ring 21 can slide along the guide rail 228 through the guide rod 211, thereby limiting the movement of the drive ring 21. By setting the mounting plate 227 and the trapezoidal plate 226, the socket mechanism 2 has a supporting platform, so that the drive ring 21 can be accurately guided and can also drive the expansion component 22 to move.

[0039] like Figures 1 to 6 and Fig. 9 As shown: the clamping mechanism 3 includes a fixed ring 31 and a plurality of clamping rods 32. The fixed ring 31 is fixedly connected to the frame 1, and the fixed ring 31 is coaxially arranged with the driving ring 21. The diameter of the fixed ring 31 is larger than the diameter of the driving ring 21. The plurality of clamping rods 32 are equidistantly arranged around the fixed ring 31, and the clamping rods 32 can be slidably arranged on the fixed ring 31 along the radial direction of the fixed ring 31.

[0040] The diameter of the fixing ring 31 is larger than the diameter of the driving ring 21, and the fixing ring 31 is coaxially arranged with the driving ring 21, so that the driving ring 21 will not be affected by the fixing ring 31 when it moves. The plurality of clamping rods 32 move along the mirror image of the fixing ring 31, and the pipe 4 mounted on the detection head 11 or the plugging head 12 is clamped by the clamping rods 32. The shape of one end of the clamping rod 32 close to the detection head 11 or the plugging head 12 is preferably an arc shape, so that the ends of the plurality of clamping rods 32 can form a circular ring that matches the detection head 11 or the plugging head 12, so that the clamping rods 32 can better seal the pipe 4 when clamping the pipe 4, thereby improving the air tightness of the detection head 11 and the plugging head 12.

[0041] like Figures 1 to 6 and Fig. 9 As shown: the clamping mechanism 3 also includes a transmission ring 33, a second elastic member 331 and connecting rods 332 of the same number and corresponding to the clamping rod 32. The transmission ring 33 is located below the fixed ring 31 and is coaxial therewith, and the transmission ring 33 is connected to the frame 1 through the second elastic member 331. The transmission ring 33 can slide along the axial direction of the fixed ring 31. When the driving ring 21 moves to the bottom of the detection head 11 or the sealing head 12, it can drive the transmission ring 33 to move toward the frame 1. The connecting rod 332 is located between the transmission ring 33 and the clamping rod 32. The two ends of the connecting rod 332 are respectively hinged to one end of the center of the force-carrying fixed ring 31 on the clamping rod 32 and the transmission ring 33.

[0042] In the initial state, the transmission ring 33 is acted upon by the second elastic member 331 so that there is a gap between the transmission ring 33 and the frame 1. At this time, the connecting rod 332 hinged to the transmission rod makes the end of the clamping rod 32 close to the center of the fixing ring 31 be located beside the inner wall of the fixing ring 31. When the driving ring 21 drives the pipe 4 to move, the driving ring 21 moves to the bottom of the detection head 11 and the plugging head 12, thereby the driving ring 21 drives the transmission ring 33 located below the fixing ring 31, thereby compressing the second elastic member 331. At this time, the movement of the transmission ring 33 drives the movement of multiple connecting rods 332, and the movement of the connecting rods 332 drives multiple clamping rods 3 2, so that the plurality of clamping rods 32 slide along the radial direction of the fixing ring 31 toward the center side of the fixing ring 31, so that the end of the clamping rod 32 abuts against the pipe 4 sleeved on the detection head 11 or the plugging head 12, thereby sealing the pipe 4 and improving the air tightness on the detection head 11 and the plugging head 12. When the driving ring 21 returns to the initial position, the transmission ring 33 can drive the clamping rod 32 to return to the initial position under the action of the elastic force of the second elastic member 331. Through the arrangement of the transmission ring 33 and the second elastic member 331, the clamping mechanism 3 can clamp and release the detection head 11 or the plugging head 12 without adding a driving source.

[0043] like Figure 7 , Figure 8 and Fig.10 As shown, the bottoms of the detection head 11 and the plugging head 12 are both provided with steps 13 that shrink toward the center of the circle.

[0044] When the pipe 4 is driven to be sleeved on the detection head 11 and the plugging head 12 by the sleeve mechanism 2, after the sleeve is completed, the sleeve mechanism 2 is away from the pipe 4, and the pipe 4 needs to be manually removed, which increases the burden on the staff. If the sleeve mechanism 2 is not removed, due to the presence of the support rod 224, there is a gap between the pipe 4 and the plugging head 12 and the detection head 11. Even if the clamping mechanism 3 clamps the pipe 4, there is still a risk of leakage during air pressure detection. Through the setting of the step 13, the support rod 224 on the extension rod 221 will shrink again with the extension rod 221 after moving to the step 13. At this time, the driving ring 21 remains in this position, and the clamping ring will clamp the pipe 4. The part of the pipe 4 located on the step 13 will keep in contact with the detection head 11 or the plugging head 12, and its bottom will have a margin connected to the support rod 224. As a result, after the detection is completed, the sleeve mechanism 2 can still drive the pipe 4 to be removed without affecting the air pressure detection.

[0045] like Figure 7 and Figure 8 As shown: the plugging head 12 is a hollow structure, and a valve core 121 that can slide along its axial direction is arranged on the top of the plugging head 12, and the valve core 121 is elastically connected to the bottom of the plugging head 12, and a plurality of air holes 123 surrounding its axis are arranged on the side wall of the plugging head 12, and an expandable rubber ring 122 is sleeved on the outer side of the air hole 123, and the valve core 121 is moved by the gas in the pipeline 4.

[0046] After the pipe 4 is connected with the plugging head 12 and the detection head 11, the air pressure detection device will inject air into the pipe 4 from the detection head 11 end. The gas can drive the valve core 121 to move along the axial direction of the plugging head 12, thereby squeezing the air inside the plugging head 12, so that the air enters the rubber ring 122 from the air hole 123. The expansion of the rubber ring 122 fills the gap between the plugging head 12 and the pipe 4, thereby further increasing the sealing box. At the same time, the clamping mechanism 3 will clamp the part of the plugging head 12 with the rubber ring 122, and the outer wall of the pipe 4 is squeezed by the clamping mechanism 3, and the rubber ring 122 squeezes the inner wall of the pipe 4, so that the sealing box between the pipe 4 and the plugging head 12 is improved, thereby ensuring the detection effect and accuracy of the equipment.

[0047] It should be noted that during air pressure detection, the air pressure will maintain a relatively high pressure, and the valve core 121 will be driven to move by the air pressure. By detecting the fluctuation of air pressure, it is possible to determine whether the pipeline 4 is leaking or not. The impact of the movement of the valve core 121 on the air pressure fluctuation is smaller than the range of the air pressure fluctuation during detection.

[0048] like Figure 8 As shown: a sealing ring 1211 is provided on the valve core 121.

[0049] By setting the sealing ring 1211, the valve core 121 has a sealing effect when moving, and the gas will not enter the interior of the plugging head 12, thereby avoiding damage to the rubber ring 122 and ensuring the normal operation of the valve core 121.

[0050] like Figure 1 , Figure 4 and Figure 5 As shown, a driving plate 14 for driving a plurality of driving rings 21 to move synchronously is arranged below the frame 1 , and the driving plate 14 is driven by a linear driver 141 .

[0051] The driving ring 21 is provided with a fixed rod 142 connected to the driving rod. The fixed rod 142 is sleeved on the frame 1 and slidably cooperates with the frame 1. The linear driver 141 is preferably a cylinder, which drives the driving plate 14 through the movement of the cylinder. The fixed rods 142 of multiple driving rings 21 are driven to move through the driving plate 14, so that the driving rings 21 can move along their respective detection heads 11 and sealing heads 12, thereby completing the sleeve connection of the ends of the pipelines 4. In this way, the detection efficiency can be greatly improved, so that the equipment can perform synchronous detection on multiple pipelines 4.

[0052] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. An automobile pipeline air pressure detection device, comprising a frame (1), It is characterized in that The frame (1) is provided with a plurality of detection heads (11) and plugging heads (12) which are arranged at equal intervals along the length direction of the frame (1), and the detection heads (11) and plugging heads (12) are arranged at intervals, and both the detection heads (11) and plugging heads (12) are cylindrical structures; Each detection head (11) and plugging head (12) is provided with a sleeve connection mechanism (2) for driving the pipeline (4) to move, and a clamping mechanism (3) for clamping the end of the pipeline (4) sleeved on the detection head (11) or the plugging head (12); The sleeve connection mechanism (2) comprises a drive ring (21) capable of moving along the axial direction of the detection head (11) or the plugging head (12). The drive ring (21) is provided with a plurality of expansion components (22) that can slide in the radial direction thereof, and the plurality of expansion components (22) are arranged around the drive ring (21) at equal intervals, and the expansion components (22) can expand and contract the end of the pipe (4) during the movement of the drive ring (21); The extension assembly (22) comprises an extension rod (221) which can slide radially along the drive ring (21); a fixing plate (222) is arranged in the middle of the extension rod (221); a first elastic member (223) is arranged between the fixing plate (222) and the inner wall of the drive ring (21); a support rod (224) which is parallel to the axis of the drive ring (21) is arranged at one end of the extension rod (221) close to the drive ring (21); and a sliding rod (225) which extends in a horizontal state is arranged at the other end of the drive ring (21); The driving ring (21) is provided with the same number of trapezoidal plates (226) as the number of the extension components (22) and corresponding to each other on a one-to-one basis, the two vertical sides of the trapezoidal plates (226) are parallel to the axis of the driving ring (21), and the shorter vertical side is located on the side away from the driving ring (21), and the sliding rod (225) can slide along the contour of the trapezoidal plates (226) when moving with the driving ring (21); A mounting plate (227) is provided on one side of the trapezoidal plate (226) close to the driving ring (21); a guide track (228) extending along the axial direction of the driving ring (21) is provided on the mounting plate (227); a guide rod (211) matching the guide track (228) is provided on the driving ring (21); the guide rod (211) and the extension rod (221) both pass through the guide track (228); The clamping mechanism (3) comprises a fixing ring (31) and a plurality of clamping rods (32); the fixing ring (31) is fixedly connected to the frame (1), and the fixing ring (31) is coaxially arranged with the driving ring (21); the diameter of the fixing ring (31) is larger than the diameter of the driving ring (21); the plurality of clamping rods (32) are arranged around the fixing ring (31) at equal distances, and the clamping rods (32) are arranged on the fixing ring (31) so as to be slidable along the radial direction of the fixing ring (31); The clamping mechanism (3) further comprises a transmission ring (33), a second elastic member (331) and connecting rods (332) of the same number and corresponding to the clamping rod (32); the transmission ring (33) is located below the fixed ring (31) and is coaxial therewith, and the transmission ring (33) and the frame (1) are connected via the second elastic member (331); the transmission ring (33) can slide along the axial direction of the fixed ring (31); when the drive ring (21) moves to the bottom of the detection head (11) or the sealing head (12), the transmission ring (33) can be driven to move toward the frame (1); the connecting rod (332) is located between the transmission ring (33) and the clamping rod (32); and the two ends of the connecting rod (332) are respectively hinged to one end of the center of the force-carrying fixed ring (31) on the clamping rod (32) and the transmission ring (33); The plugging head (12) is a hollow structure. A valve core (121) capable of sliding along its axial direction is arranged at the top of the plugging head (12). The valve core (121) is elastically connected to the bottom of the plugging head (12). A plurality of air holes (123) surrounding its axis are arranged on the side wall of the plugging head (12). An expandable rubber ring (122) is sleeved on the outer side of the air hole (123). The valve core (121) moves through the gas in the pipeline (4).

2. The automobile pipeline air pressure detection device according to claim 1, It is characterized in that The bottoms of the detection head (11) and the plugging head (12) are both provided with steps (13) that shrink toward the center of the circles.

3. The automobile pipeline air pressure detection device according to claim 1, It is characterized in that A sealing ring (1211) is provided on the valve core (121).

4. The automobile pipeline air pressure detection device according to claim 1, It is characterized in that A driving plate (14) for driving a plurality of driving rings (21) to move synchronously is arranged below the frame (1), and the driving plate (14) is driven by a linear driver (141).

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