A tool for testing automobile parts

Abstract

The present invention provides a tool for automobile parts inspection, which belongs to the field of automobile parts inspection, and comprises a fixing platform, wherein the upper end of the fixing platform is provided with a tail pipe fixing assembly, a main muffler fixing assembly and an exhaust pipe fixing assembly in sequence from left to right. The present invention adopts the tail pipe fixing assembly, the main muffler fixing assembly and the exhaust pipe fixing assembly to stably clamp and seal the tail pipe end, the main muffler and the exhaust pipe end of the automobile muffler, respectively, which not only increases the clamping and fixing fulcrum of the automobile muffler, improves the clamping efficiency and clamping stability of the automobile muffler, but also can adjust the automobile muffler as a whole to a centered state during the clamping process, avoids the automobile muffler from being subjected to an unbalanced clamping force and affecting its stability during the air tightness detection process, ensures that the automobile muffler is tested for air tightness in a stable state, and thus improves the accuracy of the air tightness detection of the automobile muffler.

Description

Technical Field

[0001] The invention relates to the field of automobile parts detection, in particular to a tool for automobile parts detection. Background Art

[0002] The car muffler is one of the most common parts in a car. Its main function is to reduce the exhaust noise generated when the engine is running, and it can also help maintain the performance and efficiency of the engine. However, if there is a leak in the muffler, it may cause the leakage of exhaust gas that has not been fully treated, resulting in substandard emissions and a greatly reduced noise reduction effect. Therefore, it is very important to conduct air tightness testing on the car muffler during production. The car muffler is mainly composed of three parts: the exhaust pipe, the main muffler and the tail pipe. In the process of air tightness testing of the car muffler, the car muffler must first be fixed on a special test device, and then compressed air or other inert gas is filled into the muffler. Then, a detection instrument or sensor is used to detect the pressure changes inside the muffler, and the air tightness of the muffler is evaluated based on the pressure change trend and specific standards.

[0003] However, there are still the following problems in the process of fixing the automobile muffler before the air tightness test: (1) The clamping force of the commonly used clamping device is insufficient in the process of fixing the automobile muffler, and it is difficult to ensure that the automobile muffler is clamped and fixed in a centered and stable state. The automobile muffler is subjected to unbalanced clamping force, resulting in poor stability during the air tightness test, which affects the accuracy of the test results.

[0004] (2) Usually, independently controlled components are used to fix the tail pipe, main muffler and exhaust pipe of the automobile muffler. The stability between different components is poor, and they are prone to loosening or movement, resulting in low fixing efficiency. At the same time, the single-stage clamping force is difficult to ensure the stability of the automobile muffler during the air tightness test.

[0005] Therefore, in order to solve the problems existing in the process of fixing the automobile muffler before the air tightness test, the present invention provides a tool for automobile parts testing. Summary of the invention

[0006] The present invention provides a tool for detecting automobile parts, comprising a fixed platform, wherein the upper end of the fixed platform is provided with a tail pipe fixing assembly, a main muffler fixing assembly and an exhaust pipe fixing assembly in sequence from left to right; the tail pipe fixing assembly comprises a circular plugging cylinder which is arranged above the left side of the fixed platform and is symmetrical front and back, and a plugging column is installed on the inner wall of the right end of the circular plugging cylinder; the main muffler fixing assembly comprises an arc-shaped clamping plate which is symmetrical front and back arranged on the upper end of the fixed platform, and a driving assembly for driving the front and rear arc-shaped clamping plates to move synchronously is arranged at the lower end of the fixed platform; the exhaust pipe fixing assembly comprises a circular sleeve which is arranged on the front side of the upper right side of the fixed platform, a plugging rod is installed on the inner wall of the left end of the circular sleeve, and the circular sleeve is installed at the front end of a movable plate, and the movable plate A mounting rod is installed in the middle of the left end, and an arc-shaped abutment plate is installed at the left end of the mounting rod; a push plate is provided on the side of the movable plate away from the tail pipe fixing assembly, and pressure springs are connected between the movable plate and the corresponding push plate, and between the two circular plugging cylinders and the corresponding push plates. The ends of the left and right push plates away from each other are connected to the pushing end of the electric push rod, and a locking assembly is provided at the lower end of the fixed platform; the locking assembly includes a fixed plate installed at the lower end of the fixed platform, a sliding groove is provided at the upper end of the fixed plate, and two square plates distributed on the left and right and fixedly connected to the fixed sections of the two electric push rods are slidably installed in the sliding groove; a movable assembly is provided below the driving assembly, and a locking piece is provided between the movable assembly and the driving assembly.

[0007] In one possible implementation, an L-shaped rod is commonly installed between the lower ends of the front and rear circular blocking cylinders, an L-shaped rod is also installed at the lower end of the arc-shaped abutment plate, L-shaped support plates are provided on the sides where the left and right L-shaped rods are close to each other, a sliding groove is provided at the upper end of the fixed platform for slidingly connecting to the horizontal section of the L-shaped support plate left and right, a front-to-back symmetrical arc-shaped groove is provided at the upper end of the vertical section of the L-shaped support plate on the left, an arc-shaped groove is also provided in the middle of the upper end of the vertical section of the L-shaped support plate on the right, and a square frame is installed on the side of the vertical section of the L-shaped support plate close to the L-shaped rod.

[0008] In one possible implementation, a limit rod is rotatably installed at the middle of the upper end of the L-shaped pallet horizontal section on the left, and a front-to-back symmetrical limit rod is rotatably installed at the upper end of the L-shaped pallet horizontal section on the right, and the upper end of the limit rod is rotatably connected to a connecting frame fixedly connected to the L-shaped pallet horizontal section.

[0009] In one possible implementation, an auxiliary rod is provided on the side of the limit rod away from the corresponding L-shaped support plate, and the auxiliary rod is rotatably installed between the upper and lower mounting blocks. The upper and lower mounting blocks are respectively connected to the connecting frame and the horizontal section of the L-shaped support plate with adjustment springs.

[0010] In one possible implementation, a vertical plate located on the left side of the rear end of the movable plate is installed on the upper end of the fixed platform, a push rod sliding through the vertical plate is installed on the left end of the movable plate, and a telescopic spring connected between the vertical plate and the movable plate is sleeved on the outside of the push rod.

[0011] In one possible implementation, the lower front end of the arc-shaped clamping plate located on the rear side is equipped with tilting rods that are evenly arranged left and right and tilted downward, and the lower rear end of the arc-shaped clamping plate located on the front side is also equipped with tilting rods that are evenly arranged left and right and tilted downward. The tilting rods on the front side and the tilting rods on the rear side are cross-distributed left and right.

[0012] In one possible implementation, the lower front end of the arc-shaped clamping plate located on the rear side is equipped with tilting rods that are evenly arranged left and right and tilted downward, and the lower rear end of the arc-shaped clamping plate located on the front side is also equipped with tilting rods that are evenly arranged left and right and tilted downward. The tilting rods on the front side and the tilting rods on the rear side are cross-distributed left and right.

[0013] In one possible implementation, the moving component includes a transverse rack, and a transverse rack slidably connected to the inner wall of the sliding groove is installed on the rear side of the left square plate and the front side of the right square plate. A driving gear is meshed between the front and rear transverse racks, and the lower end of the driving gear is connected to the output shaft of the driving motor installed on the fixed plate.

[0014] In one possible implementation, the locking member includes a connecting shaft coaxially installed between the driven gear and the driving gear, a circular plate is provided on the external sliding sleeve of the connecting shaft, the circular plate is installed on the right end of the rectangular plate, and an automatic push rod is connected between the left end of the rectangular plate and the fixed platform.

[0015] In one possible implementation, a square card slot is opened in the middle of the lower end of the front and rear control panels, support plates are installed at the front and rear ends of the rectangular plate, the circular plate is located between the front and rear support plates, and a square card block that slides in correspondence with the square card slot is installed on the upper end of the support plate.

[0016] Beneficial effects of the present invention: 1. The present invention adopts a tail pipe fixing assembly, a main muffler fixing assembly and an exhaust pipe fixing assembly to firmly clamp and seal the tail pipe end, the main muffler and the exhaust pipe end of the automobile muffler, respectively, which not only increases the clamping and fixing fulcrum of the automobile muffler, improves the clamping efficiency and clamping stability of the automobile muffler, but also can adjust the automobile muffler as a whole to a centered state during the clamping process, avoids the automobile muffler from being subjected to an unbalanced clamping force and affecting its stability during the air tightness detection process, ensures that the automobile muffler is tested for air tightness in a stable state, thereby improving the accuracy of the air tightness detection of the automobile muffler.

[0017] 2. The locking assembly used in the present invention can simultaneously perform integrated connection and locking of the tail pipe fixing assembly, the main muffler fixing assembly and the exhaust pipe fixing assembly, thereby ensuring the structural stability and overall reliability of the three, performing multi-level locking of the automobile muffler, increasing the fixing strength of the automobile muffler, and effectively preventing the tail pipe fixing assembly, the main muffler fixing assembly and the exhaust pipe fixing assembly from loosening or moving during the air tightness detection process, thereby improving the fixing efficiency of the automobile muffler.

[0018] In addition to the technical problems solved by the embodiments of the present invention described above, the technical features that constitute the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions, other technical problems that can be solved by a tooling for automobile parts inspection provided by an embodiment of the present application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific implementation methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0020] Figure 1 It is a schematic diagram of the main stereoscopic structure of the present invention.

[0021] Figure 2 The present invention is a three-dimensional structural schematic diagram of a tail pipe fixing assembly, a main muffler pipe fixing assembly, an exhaust pipe fixing assembly and an automobile muffler.

[0022] Figure 3 It is a three-dimensional structural schematic diagram of the tail pipe fixing assembly, the main muffler pipe fixing assembly and the exhaust pipe fixing assembly of the present invention.

[0023] Figure 4 It is a schematic diagram of the three-dimensional structure of the tail pipe fixing assembly of the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the exhaust pipe fixing assembly of the present invention.

[0025] Figure 6 It is a three-dimensional structural schematic diagram of the main muffler fixing component, driving component and moving component of the present invention.

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the locking member of the present invention.

[0027] Figure 8This is a schematic diagram of the three-dimensional structure of a car muffler.

[0028] In the figure: 1, fixing platform; 11, tail pipe fixing assembly; 111, round plugging tube; 112, plug column; 12, main muffler fixing assembly; 121, arc clamping plate; 122, tilting rod; 123, control board; 124, rectangular through groove; 125, longitudinal rack; 126, driven gear; 13, exhaust pipe fixing assembly; 131, round sleeve; 132, plug rod; 133, moving plate; 134, vertical plate; 135, push rod; 136, telescopic spring; 137, arc-shaped abutment plate; 138, Push plate; 139, pressure spring; 140, electric push rod; 141, L-shaped rod; 142, L-shaped support plate; 143, sliding groove; 144, square frame; 145, limit rod; 146, auxiliary rod; 147, mounting block; 148, adjustment spring; 151, fixing plate; 152, square plate; 153, transverse rack; 154, driving gear; 155, driving motor; 156, connecting shaft; 157, circular plate; 159, automatic push rod; 161, support plate; 162, square block. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0030] See also Figure 1 and Figure 8 A tool for testing automobile parts includes a fixing platform 1, and a tail pipe fixing component 11, a main muffler fixing component 12 and an exhaust pipe fixing component 13 are arranged on the upper end of the fixing platform 1 from left to right in sequence.

[0031] See also Figure 1-Figure 5The tail pipe fixing assembly 11 includes a circular plugging cylinder 111 which is arranged on the upper left side of the fixing platform 1 and is symmetrical in front and back. A plugging column 112 is installed on the inner wall of the right end of the circular plugging cylinder 111. The exhaust pipe fixing assembly 13 includes a circular sleeve 131 which is arranged on the front side of the upper right side of the fixing platform 1. A plugging rod 132 is installed on the inner wall of the left end of the circular sleeve 131. Circular through holes are opened on the circular sleeve 131 and the plugging rod 132. The outside of the plugging column 112 and the outside of the plugging rod 132 are both sleeved with sealing rings. The circular sleeve 131 is installed at the front end of the moving plate 133. A vertical plate 134 located on the left side of the rear end of the moving plate 133 is installed on the upper end of the fixing platform 1. The left end of the moving plate 133 A pushing rod 135 is installed which slides through the vertical plate 134, and a telescopic spring 136 is sleeved on the outside of the pushing rod 135 and connected between the vertical plate 134 and the moving plate 133. A mounting rod is installed in the middle of the left end of the moving plate 133, and an arc-shaped abutment plate 137 is installed on the left end of the mounting rod. A push plate 138 is provided on the side of the moving plate 133 away from the tail pipe fixing assembly 11, and a pressure spring 139 is connected between the moving plate 133 and the corresponding push plate 138, and between the two circular plugging cylinders 111 and the corresponding push plates 138. The ends of the left and right push plates 138 away from each other are connected to the pushing end of the electric push rod 140, and a locking assembly is provided at the lower end of the fixed platform 1.

[0032] See also Figure 3 , Figure 4 and Figure 5 An L-shaped rod 141 is installed between the lower ends of the front and rear circular plugging cylinders 111, and an L-shaped rod 141 is also installed at the lower end of the arc-shaped abutment plate 137. An L-shaped support plate 142 is provided on the side close to the left and right L-shaped rods 141. A sliding groove 143 is provided on the upper end of the fixed platform 1 to be slidably connected to the horizontal section of the L-shaped support plate 142. A front-to-back symmetrical arc-shaped groove is provided on the upper end of the vertical section of the L-shaped support plate 142 on the left side, and an arc-shaped groove is also provided in the middle of the upper end of the vertical section of the L-shaped support plate 142 on the right side. A square is installed on the side of the vertical section of the L-shaped support plate 142 close to the L-shaped rod 141 Frame 144, a limiting rod 145 is rotatably installed in the middle of the upper end of the horizontal section of the L-shaped support plate 142 on the left, and a limiting rod 145 symmetrically installed front and rearward is rotatably installed on the upper end of the horizontal section of the L-shaped support plate 142 on the right. The upper end of the limiting rod 145 is rotatably connected to a connecting frame fixedly connected to the horizontal section of the L-shaped support plate 142. An auxiliary rod 146 is arranged on the side of the limiting rod 145 away from the corresponding L-shaped support plate 142. The auxiliary rod 146 is rotatably installed between the upper and lower mounting blocks 147. The upper and lower mounting blocks 147 are respectively connected to the connecting frame and the horizontal section of the L-shaped support plate 142 with an adjusting spring 148.

[0033] When working: First, place the automobile muffler to be tested for air tightness on the fixing table 1 (the structure of the automobile muffler is as follows Figure 8As shown), the front and rear tail pipes at the left end of the automobile muffler are placed in the front and rear arc grooves on the left L-shaped support plate 142, and the transverse section of the right end exhaust pipe is placed in the arc groove on the right L-shaped support plate 142 (see Figure 2 ), the L-shaped supporting plates 142 on the left and right sides can be used to support the automobile muffler to be placed horizontally above the fixed platform 1, so as to clamp the automobile muffler smoothly and stably later. In addition, in the process of placing the automobile muffler between the left and right L-shaped supporting plates 142, it is necessary to pass the left limiting rod 145 between the front and rear tail pipes at the left end of the automobile muffler, and at the same time, pass the transverse connecting section of the exhaust pipe and the main muffler between the front and rear limiting rods 145 on the right. With the cooperation of the limiting rods 145 on the left and right sides and the tail pipe and exhaust pipe of the automobile muffler, the limiting rods 145 can limit the position of the automobile muffler in the front and rear direction to ensure that the automobile muffler can be placed above the fixed platform 1 in a front-to-back centered state.

[0034] Then, the push plates 138 can be pushed toward the direction of the automobile muffler by the electric push rods 140 on the left and right sides at the same time. The left push plate 138 drives the front and rear circular plugging cylinders 111 to move to the right through the pressure spring 139, and the right push plate 138 drives the movable plate 133 to move to the left through the pressure spring 139. In this process, the plug posts 112 inside the front and rear circular plugging cylinders 111 are simultaneously inserted into the corresponding tail pipes of the automobile muffler until the inner wall of the left end of the circular plugging cylinder 111 is pressed against the tail pipe of the automobile muffler. At the same time, the movable plate 133 drives the circular sleeve 131 to gradually approach the detection air inlet of the exhaust pipe of the automobile muffler, and the plug post 112 inside the circular sleeve 131 is inserted into the tail pipe of the automobile muffler. 32 is gradually inserted into the detection air inlet of the exhaust pipe and finally pressed against the inner wall of the right end of the circular sleeve 131. During the movement, the movable plate 133 gradually squeezes the telescopic spring 136 and drives the pushing rod 135 to move to the left along the vertical plate 134 synchronously. Through the cooperation among the pushing rod 135, the telescopic spring 136 and the vertical plate 134, not only the rightward movement of the movable plate 133 is guided and supported, thereby improving the stability of the movable plate 133, but also the resistance encountered when the circular sleeve 131 is pressed against the detection air inlet of the exhaust pipe can be simulated, so as to balance the pressure applied by the movable plate 133 on the exhaust pipe, thereby ensuring that the exhaust pipe is subjected to a stable and uniform pressing force, thereby improving the stability of the exhaust pipe.

[0035] Secondly, the movable plate 133 also drives the arc-shaped abutment plate 137 to gradually press against the longitudinal section of the automobile muffler exhaust pipe through the mounting rod. Firstly, it assists the circular sleeve 131 to fix the exhaust pipe horizontally, further increasing the stability of the automobile muffler exhaust pipe. Secondly, it balances the force on the exhaust pipe to avoid deformation caused by force on one end of the exhaust pipe. In addition, the circular plugging cylinder 111 and the circular sleeve 131 respectively use sealing rings to press against the detection air inlet of the tail pipe and the exhaust pipe, which is beneficial to improving the sealing of the tail pipe and the exhaust pipe while ensuring the stability of the abutment force, and preventing the automobile muffler tail pipe or exhaust pipe from leaking during the airtightness detection process and affecting the overall airtightness detection. To ensure the accuracy of the test results, the air intake pipe of the existing air-tightness equipment can be inserted into the circular through holes of the circular sleeve 131 and the insertion rod 132, and then the air source can be injected into the automobile muffler from the air intake pipe through the existing air-tightness testing equipment, and the pressure change inside the automobile muffler can be monitored by the pressure sensor on the air-tightness testing equipment. During the test, observe whether the pressure is stable. If the pressure is stable, it means that the air-tightness performance is good. If the pressure drops or is unstable, there may be a leak. In addition, after keeping the air source injected for a period of time, turn off the air source and record the pressure holding time. The automobile muffler with good air-tightness performance can maintain stable pressure within the specified time.

[0036] Before the tail pipe and the exhaust pipe are tightly fixed, the circular plugging tube 111 and the arc-shaped abutment plate 137 drive the corresponding L-shaped rod 141 to move synchronously toward each other in advance. During this process, the horizontal section of the L-shaped rod 141 is gradually inserted into the square frame 144 and presses the vertical section of the L-shaped support plate 142. The square frame 144 can guide the movement of the L-shaped rod 141, so that the L-shaped support plate 142 drives the limiting rod 145 to move along the sliding groove 143 toward the direction of the automobile muffler. The auxiliary rod 146 moves synchronously with the L-shaped support plate 142 and the limiting rod 145 through the upper and lower mounting blocks 147 and the adjusting spring 148 until the left and right ends of the main muffler of the automobile are simultaneously pressed by the corresponding auxiliary rods 146. Under the action of the adjusting spring 148, the auxiliary rods 146 on the left and right sides can be automatically adjusted according to the actual state of the automobile muffler. It is adapted to press against the two ends of the main muffler to adjust the entire automobile muffler to a left-right centered state, so that the tail pipe, exhaust pipe and main muffler of the automobile muffler can be better and firmly clamped. During this process, the limiting rod 145 and the auxiliary rod 146 are in rotational contact with the corresponding tail pipe and exhaust pipe to reduce the friction between the limiting rod 145, the auxiliary rod 146 and the tail pipe and exhaust pipe. In addition, in the process of centering the entire automobile muffler, the tail pipe fixing assembly 11 and the exhaust pipe fixing assembly 13 simultaneously complete the fixation of the tail pipe and the exhaust pipe. After the subsequent L-shaped rod 141 moves away from the L-shaped support plate 142, the L-shaped support plate 142, the limiting rod 145 and the auxiliary rod 146 are all in an automatic sliding state and the pressing force on the main muffler of the automobile muffler is released, so that the automobile muffler can be smoothly removed after the air tightness test.

[0037] See also Figure 1 , Figure 2 , Figure 3 , Figure 6 and Figure 7 The main muffler fixing assembly 12 includes an arc-shaped clamping plate 121 symmetrically arranged at the upper end of the fixing platform 1, and a driving assembly for driving the front and rear arc-shaped clamping plates 121 to move synchronously in the opposite direction is provided at the lower end of the fixing platform 1. A tilting rod 122 evenly arranged left and right and tilted downward is installed at the lower end of the front side of the arc-shaped clamping plate 121 located at the rear side, and a tilting rod 122 evenly arranged left and right and tilted downward is also installed at the lower end of the rear side of the arc-shaped clamping plate 121 located at the front side. The tilting rod 122 located at the front side and the tilting rod 122 located at the rear side are cross-distributed left and right, and the driving assembly includes a control plate 123 installed at the lower ends of the front and rear arc-shaped clamping plates 121. A rectangular through groove 124 for the control plate 123 to slide forward and backward is opened on the fixing platform 1, and a longitudinal rack 125 slidably connected to the inner wall of the rectangular through groove 124 is installed at the lower right end of the control plate 123 located at the rear side and the lower left end of the control plate 123 located at the front side, and a driven gear 126 is meshed between the left and right longitudinal racks 125.

[0038] See also Figure 1 , Figure 6 and Figure 7 The locking assembly includes a fixed plate 151 installed at the lower end of the fixed platform 1, and a sliding groove is opened at the upper end of the fixed plate 151. Two square plates 152 distributed on the left and right and fixedly connected to the fixed sections of the two electric push rods 140 are slidably installed in the sliding groove. A moving assembly for controlling the synchronous movement of the left and right square plates 152 along the sliding groove is arranged below the driving assembly. A locking member is arranged between the moving assembly and the driving assembly. The moving assembly includes a transverse rack 153. The transverse rack 153 slidably connected to the inner wall of the sliding groove is installed on the rear side of the left square plate 152 and the front side of the right square plate 152. A driving gear 154 is meshed between the front and rear transverse racks 153, and the lower end of the driving gear 154 is connected to the output shaft of the driving motor 155 installed on the fixed plate 151.

[0039] See also Figure 6 and Figure 7 The locking member includes a connecting shaft 156 coaxially installed between the driven gear 126 and the driving gear 154, a circular plate 157 is slidably sleeved on the outside of the connecting shaft 156, the circular plate 157 is installed on the right end of the rectangular plate, and an automatic push rod 159 is connected between the left end of the rectangular plate and the fixed platform 1. The middle part of the lower end of the front and rear control plates 123 is provided with a square slot, and the front and rear ends of the rectangular plate are installed with a support plate 161. The circular plate 157 is located between the front and rear support plates 161, and the upper end of the support plate 161 is installed with a square block 162 that slides with the corresponding square slot.

[0040] During operation: the circular plate 157 in the initial state is located at the lower end of the connecting shaft 156. After the tail pipe of the automobile muffler is fixed to the exhaust pipe, the driving motor 155 can be used to drive the driving gear 154 to rotate, and the driven gear 126 can rotate synchronously through the connecting shaft 156 and drive the left and right longitudinal racks 125 to slide synchronously back and forth. The left and right longitudinal racks 125 drive the corresponding control plates 123 to slide synchronously along the inner wall of the rectangular through groove 124. Since the centering and stable limiting of the entire automobile muffler has been completed in advance, the control plate 123 drives the arc clamping plate 121 to move synchronously in the direction of the automobile muffler and finally press against the middle of the main muffler to ensure that the main muffler is subjected to a uniform and balanced clamping force, which is beneficial to the improvement of the overall stability of the automobile muffler. In the process of the front and rear arc clamping plates 121 approaching each other, the inclined rods 122 on the front and rear sides slide in contact and lock with each other to increase the relative stability between the front and rear arc clamping plates 121. In addition, rubber pads may be provided on the clamping surfaces of the arc-shaped clamping plate 121 and the arc-shaped abutting plate 137. The rubber pads can be used to increase the abutting friction force and prevent the main muffler and the exhaust pipe from being worn or deformed.

[0041] In the process of clamping and fixing the main muffler, the driving gear 154 always keeps rotating. As the driving gear 154 rotates, the front and rear transverse racks 153 drive the corresponding square plate 152 to move synchronously left and right along the sliding groove. The square plate 152 drives the corresponding electric push rod 140 to move synchronously in the direction of the automobile muffler. The electric push rod 140 squeezes the pressure spring 139 through the push plate 138 to drive the tail pipe fixing assembly 11 / exhaust pipe fixing assembly 13 to further move in the direction of the automobile muffler. Since the tail pipe fixing assembly 11 and the exhaust pipe fixing assembly 13 have already completed the tight fixation of the automobile muffler tail pipe and the exhaust pipe in advance, the tail pipe fixing assembly 11 and the exhaust pipe fixing assembly 13 are further locked and fixed to each other at this time, which increases the fixing strength of the tail pipe and the exhaust pipe, thereby ensuring the structural stability of the entire automobile muffler, and effectively preventing the tail pipe fixing assembly 11 and the exhaust pipe fixing assembly 13 from loosening or moving during the subsequent air tightness detection process.

[0042] When the main muffler assembly clamps the main muffler, the pressure spring 139 is in a fully compressed state, and then the rectangular plate and the circular plate 157 can be driven to move upward along the connecting shaft 156 through the automatic push rod 159, and the support plate 161 drives the square clamping block 162 to gradually insert into the square clamping groove at the lower end of the control plate 123. The clamped arc clamping plate 121 can be locked and limited by the cooperation of the square clamping block 162 and the square clamping groove, and the longitudinal rack 125 is also limited. Of course, the driven gear 126 and the driving gear 154 are also limited, so as to effectively prevent other external factors from interfering with the driving gear. The wheel 154 and the driven gear 126 rotate, resulting in unstable clamping of the tail pipe fixing assembly 11, the exhaust pipe fixing assembly 13 and the main muffler fixing assembly 12. With the cooperation of the driving assembly, the moving assembly and the locking piece, the tail pipe fixing assembly 11, the exhaust pipe fixing assembly 13 and the muffler fixing assembly are synchronously integrated and connected and locked, further increasing the overall reliability among the three, thereby improving the stability of the automobile muffler during air tightness testing. Subsequently, the automobile muffler after fixation can be tested for air tightness through existing air tightness testing equipment and existing technologies.

[0043] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0044] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A tool for testing automobile parts, comprising a fixing table (1), characterized in that: The upper end of the fixing platform (1) is provided with a tail pipe fixing assembly (11), a main muffler fixing assembly (12) and an exhaust pipe fixing assembly (13) in sequence from left to right; The tail pipe fixing assembly (11) comprises a circular plugging tube (111) which is arranged on the upper left side of the fixing platform (1) and is symmetrical in front and back, and a plugging column (112) is installed on the inner wall of the right end of the circular plugging tube (111); the main muffler fixing assembly (12) comprises an arc-shaped clamping plate (121) which is arranged on the upper end of the fixing platform (1) in a symmetrical manner in front and back, and a driving assembly for driving the front and rear arc-shaped clamping plates (121) to move synchronously is arranged at the lower end of the fixing platform (1); the exhaust pipe fixing assembly (13) comprises a circular sleeve (131) which is arranged on the front side of the upper right side of the fixing platform (1), and a plugging rod (132) is installed on the inner wall of the left end of the circular sleeve (131); the circular sleeve (131) is installed on the front end of a movable plate (133), a mounting rod is installed in the middle of the left end of the movable plate (133), and a curved abutment plate (137) is installed on the left end of the mounting rod; A push plate (138) is provided on the side of the movable plate (133) away from the tail pipe fixing assembly (11), a pressure spring (139) is connected between the movable plate (133) and the corresponding push plate (138), and between the two circular plugging cylinders (111) and the corresponding push plates (138), the ends of the left and right push plates (138) away from each other are connected to the pushing end of the electric push rod (140), and a locking assembly is provided at the lower end of the fixing platform (1); The locking assembly comprises a fixed plate (151) mounted at the lower end of the fixed platform (1); a sliding groove is provided at the upper end of the fixed plate (151); two square plates (152) are slidably mounted in the sliding groove and are distributed on the left and right and fixedly connected to the fixed sections of the two electric push rods (140) in a one-to-one correspondence; a moving assembly is arranged below the driving assembly; and a locking member is arranged between the moving assembly and the driving assembly.

2. The tooling for automobile parts inspection according to claim 1, characterized in that: An L-shaped rod (141) is installed between the lower ends of the front and rear circular blocking cylinders (111), and an L-shaped rod (141) is also installed at the lower end of the arc-shaped abutment plate (137). An L-shaped support plate (142) is provided on the sides of the left and right L-shaped rods (141) that are close to each other. A sliding groove (143) is provided on the upper end of the fixed platform (1) and is slidably connected to the horizontal section of the L-shaped support plate (142) to the left and right. A front-to-back symmetrical arc-shaped groove is provided on the upper end of the vertical section of the left L-shaped support plate (142), and an arc-shaped groove is also provided in the middle of the upper end of the vertical section of the right L-shaped support plate (142). A square frame (144) is installed on the side of the vertical section of the L-shaped support plate (142) that is close to the L-shaped rod (141).

3. The tooling for automobile parts inspection according to claim 2, characterized in that: A limiting rod (145) is rotatably mounted on the middle of the upper end of the horizontal section of the L-shaped support plate (142) located on the left side, and a front-to-back symmetrical limiting rod (145) is rotatably mounted on the upper end of the horizontal section of the L-shaped support plate (142) located on the right side, and the upper end of the limiting rod (145) is rotatably connected to a connecting frame fixedly connected to the horizontal section of the L-shaped support plate (142).

4. The tooling for automobile parts inspection according to claim 3, characterized in that: An auxiliary rod (146) is provided on one side of the limiting rod (145) away from the corresponding L-shaped support plate (142). The auxiliary rod (146) is rotatably mounted between upper and lower mounting blocks (147). Adjustment springs (148) are respectively connected between the upper and lower mounting blocks (147) and the connecting frame and the horizontal section of the L-shaped support plate (142).

5. The tooling for automobile parts inspection according to claim 1, characterized in that: The upper end of the fixed platform (1) is provided with a vertical plate (134) located on the left side of the rear end of the movable plate (133); the left end of the movable plate (133) is provided with a push rod (135) which slides through the vertical plate (134); the push rod (135) is sleeved with a telescopic spring (136) connected between the vertical plate (134) and the movable plate (133) on the outside.

6. The tooling for automobile parts inspection according to claim 1, characterized in that: The lower front end of the arc-shaped clamping plate (121) located at the rear side is equipped with tilting rods (122) that are evenly arranged left and right and tilted downward, and the lower rear end of the arc-shaped clamping plate (121) located at the front side is also equipped with tilting rods (122) that are evenly arranged left and right and tilted downward, and the tilting rods (122) located at the front side and the tilting rods (122) located at the rear side are cross-distributed left and right.

7. The tooling for automobile parts inspection according to claim 1, characterized in that: The driving assembly comprises a control panel (123) mounted at the lower ends of the front and rear arc-shaped clamping plates (121); a rectangular through slot (124) for the control panel (123) to slide forward and backward is provided on the fixed platform (1); a longitudinal rack (125) slidably connected to the inner wall of the rectangular through slot (124) is mounted at the lower right end of the control panel (123) at the rear side and the lower left end of the control panel (123) at the front side; a driven gear (126) is meshed between the left and right longitudinal racks (125).

8. The tooling for automobile parts inspection according to claim 7, characterized in that: The moving assembly comprises a transverse rack (153), and the transverse racks (153) slidably connected to the inner wall of the sliding groove are installed on the rear side of the left square plate (152) and the front side of the right square plate (152). A driving gear (154) is meshed between the front and rear transverse racks (153), and the lower end of the driving gear (154) is connected to the output shaft of a driving motor (155) installed on the fixed plate (151).

9. The tooling for automobile parts inspection according to claim 8, characterized in that: The locking member comprises a connecting shaft (156) coaxially mounted between a driven gear (126) and a driving gear (154); a circular plate (157) is slidably sleeved outside the connecting shaft (156); the circular plate (157) is mounted on the right end of the rectangular plate; and an automatic push rod (159) is connected between the left end of the rectangular plate and the fixed platform (1).

10. The tooling for automobile parts inspection according to claim 9, characterized in that: A square card slot is provided in the middle of the lower end of the front and rear control plates (123); support plates (161) are installed at the front and rear ends of the rectangular plate; the circular plate (157) is located between the front and rear support plates (161); and a square card block (162) slidably matched with the square card slot is installed at the upper end of the support plate (161).

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