Comprehensive testing fixture for lower pipe frame of automobile

Abstract

The utility model relates to a comprehensive testing fixture for an automobile lower pipe frame, which relates to the field of automobile spare parts and comprises a testing workbench, a plurality of supporting seats arranged on the testing workbench and used for supporting the lower pipe frame, a positioning device used for positioning the lower pipe frame and a detecting device used for detecting connecting holes of the lower pipe frame. Detection holes in one-to-one correspondence with the connecting holes of the lower pipe frame are vertically formed in the top of the supporting seat; the detection device is provided with detection rods which are in one-to-one correspondence with the detection holes, can vertically penetrate through the connecting holes of the lower pipe frame and are inserted into the detection holes; the positioning device comprises a tail limiting block used for limiting and fixing the tail of the lower pipe frame and a head end fixing assembly used for magnetically attracting the head end of the lower pipe frame so as to be close to and fixed to the supporting base. The automobile lower pipe frame detection device has the effect of improving the detection efficiency of the automobile lower pipe frame.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to a comprehensive inspection tool for an automobile lower pipe rack. Background Art

[0002] The automobile lower tube frame refers to the automobile lower arm bracket, which is an important part of the automobile suspension system. It plays the role of supporting the vehicle body and ensuring that the vehicle remains stable during driving.

[0003] The automobile lower tube rack is made of metal material, and its surface is provided with several connection holes for connection. Due to processing errors in the production process, the position of the connection holes may deviate, which may cause safety hazards when the lower tube rack is installed on the automobile. Therefore, the position of the connection holes needs to be inspected after the automobile lower tube rack is manufactured. In the factory, there are usually special quality inspectors to inspect the connection holes of the lower tube rack, and measure the relative position between the connection holes and the adjacent connection holes through tools such as vernier calipers, but the above measurement method is inefficient and needs to be improved. Utility Model Content

[0004] In order to improve the detection efficiency of the automobile lower tube rack, the utility model provides a comprehensive inspection tool for the automobile lower tube rack.

[0005] The utility model provides a comprehensive inspection tool for automobile lower pipe racks, which adopts the following technical solutions:

[0006] A comprehensive inspection tool for automobile lower tube racks comprises a test workbench, and also comprises a plurality of support seats arranged on the test workbench and used to support the lower tube racks, a positioning device for positioning the lower tube racks, and a detection device for detecting the connection holes of the lower tube racks; detection holes corresponding to the connection holes of the lower tube racks are vertically opened on the top of the support seats; the detection device comprises a detection rod corresponding to the detection holes and capable of vertically penetrating the connection holes of the lower tube racks and being inserted into the detection holes; the positioning device comprises a tail limit block for limiting and fixing the tail of the lower tube rack and a head end fixing component for magnetically attracting the head end of the lower tube rack to be fixed close to the support seat.

[0007] By adopting the above technical solution, when the position of the connection hole of the lower tube rack is detected, after the lower tube rack is placed on the support seat, the tail of the lower tube rack is first limited and fixed by the tail limit block, and then the head end of the lower tube rack is magnetically attracted by the head end fixing assembly to bring it close and fix it on the support seat, which can improve the installation stability of the lower tube rack on the support seat to ensure the stability of the detection process. After the installation of the lower tube rack is completed, the detection rods are inserted into the detection holes of the support seat through the connection holes of the lower tube rack one by one without being pulled out. When all the detection holes can be inserted by all the detection rods at the same time, it means that the position of the connection holes of the lower tube rack is qualified. Compared with direct measurement by vernier caliper, the above structure and method for detecting the connection holes of the lower tube rack are more convenient to operate and greatly improve the detection efficiency.

[0008] Optionally, the detection device includes a manual detection mechanism and an automatic detection mechanism, both of which have a detection rod; the manual detection mechanism also includes a placement seat for inserting the detection rod, and the placement seat corresponds to the detection rod one by one.

[0009] By adopting the above technical solution, the detection rod of the detection device is divided into a manual part and an automatic part. When the automatic part can be used, the lower pipe rack is detected by the detection rod of the automatic part, which is more efficient. When the automatic part cannot be used, the lower pipe rack is manually detected by the detection rod of the manual part, which can also improve the detection efficiency to a certain extent compared with measuring with a vernier caliper.

[0010] Optionally, the head-end fixing assembly includes a fixing seat and a fixing block mounted on the fixing seat, and the fixing block is embedded with a magnetic sheet that is magnetically attracted to the end of the lower pipe rack.

[0011] By adopting the above technical solution, when the lower pipe rack is installed on the support seat, the tail limit block can first limit the tail of the lower pipe rack, and then the magnetic suction piece in the head end fixing assembly can be attracted to the lower pipe rack to fix the lower pipe rack on the support seat, thereby improving the installation stability of the lower pipe rack on the support seat and preventing it from being offset when the detection rod is performing detection.

[0012] Optionally, the fixed seat is vertically provided with a sliding groove, the fixed block is vertically slidably installed in the sliding groove, the fixed block has a supporting portion for supporting the lower part of the head end of the lower pipe rack, and the upper and lower ends of the fixed block are respectively connected to an upper spring and a lower spring.

[0013] By adopting the above technical solution, when the head end of the lower pipe rack is installed on the fixed seat, the supporting part can support the lower pipe rack, and when the fixed seat slides in the vertical direction, it is acted upon by the upper spring and the lower spring, so that the lower pipe rack can be installed on the supporting seat and is not prone to collision and wear.

[0014] Optionally, the fixed seat is provided with elastic sheets on both sides of the sliding groove, and the fixed block has an initial state and a downward pressing state. When the fixed block is in the initial state, the elastic sheet abuts against the lower end of the fixed block, and when the fixed block is in the downward pressing state, the fixed block drives the elastic sheet to deform and move downward.

[0015] By adopting the above technical solution, when the lower pipe rack is installed on the fixed seat, the lower pipe rack can be attracted by the magnetic sheet, and under the dual gravity of the lower pipe rack and the fixed seat, the fixed seat can overcome the limitation of the elastic sheet and move downward, and finally when the lower pipe rack abuts against the support seat, the upper spring and the magnetic sheet can work together to further press the lower pipe rack onto the support seat.

[0016] Optionally, the automatic detection mechanism further includes a driving assembly for installing the detection rod and driving the detection rod to move downward, and a triggering assembly for limiting the driving assembly to trigger the detection rod to move downward.

[0017] By adopting the above technical solution and setting a trigger assembly, the placing process of the lower pipe rack and the detecting process of the detecting rod can be carried out successively under certain conditions, thereby avoiding the danger caused by the descending of the detecting rod when placing the lower pipe rack.

[0018] Optionally, the driving assembly includes a driving seat fixed to the test workbench, a sliding seat vertically sliding on the driving seat and used for mounting the detection rod, and a deceleration spring arranged on the driving seat and used to drive the sliding seat to slowly descend.

[0019] By adopting the above technical solution, when the sliding seat and the detection rod move vertically downward on the driving seat, the deceleration spring can exert an upward elastic force on the sliding seat, so that the detection rod can slowly descend. When the detection rod cannot be accurately inserted into the connecting hole of the lower pipe rack, the detection rod and the lower pipe rack are not easily damaged.

[0020] Optionally, the trigger assembly includes a locking piece slidably mounted on the driving seat and abutting against the bottom of the sliding seat, an unlocking block slidably mounted on the test workbench and used to unlock the locking piece, and an ejection block vertically sliding on the support seat and used to drive the unlocking block to slide; the support seat is provided with an ejection groove on one side of the detection hole and the ejection block vertically slides in the ejection groove, and the ejection block extends out of the top of the support seat and abuts against the bottom of the lower pipe rack.

[0021] By adopting the above technical solution, when the lower pipe rack is installed on the support seat, the bottom of the lower pipe rack can abut against the top of the ejection block. Only when the lower pipe rack is accurately installed on the support seat, the lower pipe rack can press all the ejection blocks on the support seat back into the ejection groove, thereby triggering the unlocking of the locking piece, avoiding the situation where the detection device detects abnormally due to the inaccurate installation of the lower pipe rack, and improving the detection efficiency.

[0022] Optionally, one end of the unlocking block is connected to the ejection block via a flexible strip, and the other end is connected to the test workbench via a reset spring; one side of the unlocking block is provided with an unlocking groove for the locking piece to slide horizontally into.

[0023] Optionally, the locking member includes a left locking portion, a right locking portion and a driving spring connecting the two to drive the two to move away from each other at both ends so that the sliding seat can slide downward along the height direction of the driving seat; the bottom of the locking member has a locking tongue corresponding to the detection hole one by one; the locking member has a locked state and an unlocked state, and when the locking member is in the locked state, the locking tongue abuts against the side wall of each unlocking block, and the locking member locks the sliding seat at this time; when the locking member is in the unlocked state, each ejection block moves downward and drives the unlocking groove to face the locking tongue, and the driving spring drives each locking tongue to slide horizontally and get into the unlocking groove, and at this time the sliding seat moves downward under the action of gravity.

[0024] By adopting the above technical solution, when all the ejection blocks are pressed back into the ejection grooves by the lower pipe rack, all the locking tongues can be aligned with the unlocking grooves of the unlocking blocks and thus snap into the unlocking grooves, at which time the locking piece can be unlocked and the detection rod can be lowered. If any of the ejection blocks is not fully retracted, the locking piece cannot be unlocked and the detection rod cannot move downward, thus avoiding the situation where the detection device detects abnormally due to the inaccurate installation of the lower pipe rack, and improving the detection efficiency.

[0025] In summary, the present invention includes at least one of the following beneficial technical effects:

[0026] A comprehensive inspection fixture for automobile lower tube racks. When inspecting the positions of the connection holes of the lower tube rack, after placing the lower tube rack on a support seat, first limit and fix the tail of the lower tube rack by a tail limit block, and then magnetically attract the head end of the lower tube rack by a head end fixing assembly to bring it close and fix it on the support seat, which can improve the installation stability of the lower tube rack on the support seat to ensure the stability of the inspection process. When the lower tube rack is installed, the inspection rods are inserted into the inspection holes of the support seat through the connection holes of the lower tube rack one by one without being pulled out. When all the inspection holes can be inserted by all the inspection rods at the same time, it means that the positions of the connection holes of the lower tube rack are qualified. Compared with direct measurement by a vernier caliper, the above-mentioned structure and method for inspecting the connection holes of the lower tube rack are more convenient to operate and greatly improve the inspection efficiency;

[0027] When the lower tube rack is installed on the support seat, the tail limit block can first limit the tail of the lower tube rack, and then the magnetic suction piece in the head end fixing assembly can be attracted with the lower tube rack to fix the lower tube rack on the support seat, thereby improving the installation stability of the lower tube rack on the support seat, and it is not easy to deviate when the detection rod is detecting;

[0028] When the lower tube rack is installed on the support seat, the bottom of the lower tube rack can abut against the top of the ejection block. When all the ejection blocks are pressed back into the ejection groove by the lower tube rack, all the locking tongues can face the unlocking grooves of the unlocking blocks and snap into the unlocking grooves. At this time, the locking piece can be unlocked and the detection rod can be lowered. If any of the ejection blocks is not fully retracted, the locking piece cannot be unlocked and the detection rod cannot move downward, thus avoiding the situation where the detection device detects abnormally due to the inaccurate installation of the lower tube rack, thereby improving the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the overall structure of a comprehensive inspection tool for a lower pipe rack of an automobile according to an embodiment of the utility model;

[0030] Figure 2 It is a structural schematic diagram of a support base and a positioning device according to an embodiment of the utility model;

[0031] Figure 3 It is a structural schematic diagram of the head end fixing assembly of an embodiment of the utility model;

[0032] Figure 4 It is a structural schematic diagram of the automatic detection mechanism of an embodiment of the utility model;

[0033] Figure 5 It is a structural schematic diagram of a trigger component of an embodiment of the utility model;

[0034] Figure 6 It is a structural schematic diagram of a locking member according to an embodiment of the utility model.

[0035] The parts indicated by the numbers in the above figures are as follows: 1. Test workbench; 2. Support seat; 21. Detection hole; 22. Ejection slot; 3. Positioning device; 31. Tail limit block; 311. Groove position; 32. Head end fixing assembly; 321. Fixing seat; 322. Fixing block; 323. Sliding slot; 324. Magnetic sheet; 325. Supporting part; 326. Upper spring; 327. Lower spring; 328. Elastic sheet; 4. Detection device; 41. Manual detection mechanism; 411. Placement Seat; 42, automatic detection mechanism; 421, driving assembly; 4211, driving seat; 4212, sliding seat; 4213, deceleration spring; 4214, driving slot; 422, trigger assembly; 4221, locking piece; 42211, left locking part; 42212, right locking part; 42213, driving spring; 42214, locking tongue; 4222, unlocking block; 42221, unlocking slot; 4223, ejection block; 4224, flexible strip; 4225, reset spring; 43, detection rod. DETAILED DESCRIPTION

[0036] The utility model is further described in detail below in conjunction with the accompanying drawings and embodiments.

[0037] The utility model embodiment discloses a comprehensive inspection tool for a lower pipe rack of an automobile.

[0038] Reference Figure 1 A comprehensive inspection tool for automobile lower tube racks includes a test workbench 1, a support seat 2, a positioning device 3 and a detection device 4. The support seat 2, the positioning device 3 and the detection device 4 are all installed on the test workbench 1. The support seat 2 is used for installing and supporting the automobile lower tube rack, the positioning device 3 is used to limit and fix the two ends of the lower tube rack, and the detection device 4 is used to detect the connection holes of the lower tube rack. When detecting the connection holes of the lower tube rack, the lower tube rack is first installed on the support seat 2, so that the two ends of the lower tube rack are limited on the positioning device 3, and finally the connection holes are detected by the detection device 4.

[0039] Reference Figure 1 and Figure 2 There are several support seats 2, which are located below the lower pipe rack according to the shape and direction of the lower pipe rack and fixed to the test workbench 1. A detection hole 21 is opened on the top of the support seat 2, and the number of the detection holes 21 corresponds to the number of the connection holes of the lower pipe rack, and when the lower pipe rack is accurately installed on the support seat 2, the connection holes and the detection holes 21 are directly opposite in the vertical direction.

[0040] Reference Figure 1 and Figure 2 The positioning device 3 includes a tail limit block 31 and a head end fixing component 32.

[0041] The tail limiting block 31 is located at the tail position of the lower tube rack and is used to limit the tail of the lower tube rack. A groove 311 matching the shape of the tail of the lower tube rack is formed on the tail limiting block 31.

[0042] Reference Figure 1 and Figure 3 The head end fixing assembly 32 is located at the head end of the lower tube rack and is used to limit the head end of the lower tube rack. The head end fixing assembly 32 includes a fixing seat 321 and a fixing block 322 installed on the test workbench 1. The fixing seat 321 is provided with a sliding groove 323 in the vertical direction, and the fixing block 322 slides vertically in the sliding groove 323. A magnetic sheet 324 is embedded on the side of the fixing block 322 facing the lower tube rack, and the lower end of the magnetic sheet 324 is integrally connected to the fixing block 322 with a supporting portion 325, and the supporting portion 325 extends out of the end surface of the magnetic sheet 324 to support the lower tube rack.

[0043] An upper spring 326 and a lower spring 327 are respectively disposed at the upper and lower ends of the fixing block 322 , and elastic sheets 328 are disposed on both sides of the sliding groove 323 of the fixing seat 321 , so that the fixing block 322 has an initial state and a downward pressing state.

[0044] When the fixing block 322 is in the initial state, the lower pipe rack has not yet been placed on the support seat 2 and has not abutted against the positioning device 3. At this time, the elastic sheet 328 abuts against the bottom of the fixing block 322, thereby limiting the fixing block 322 above the elastic sheet 328. The sum of the upward elastic force of the elastic sheet 328 and the upward elastic force of the lower spring 327 is greater than the sum of the elastic force of the upper spring 326 and the weight of the fixing block 322.

[0045] When the fixed block 322 is in a downward pressure state, the lower tube rack is placed on the support seat 2 and the lower tube rack is in contact with the positioning device 3. At this time, the supporting portion 325 supports the lower part of the head end of the lower tube rack and the magnetic sheet 324 is attracted to the head end face of the lower tube rack. When the gravity of the lower tube rack is increased, the sum of the upward elastic force of the elastic sheet 328 and the upward elastic force of the lower spring 327 is less than the sum of the elastic force of the upper spring 326, the gravity of the fixed block 322 and the gravity of the lower tube rack. At this time, the fixed block 322 drives the elastic sheet 328 to deform and shrink so that the fixed block 322 slides vertically downward so that the lower tube rack is in contact with the top of the support seat 2. And because the magnetic sheet 324 attracts the lower tube rack and the upper spring 326 applies downward pressure, the lower tube rack is pressed against the top of the support seat 2.

[0046] When the lower pipe rack is removed, since the upward elastic force of the lower spring 327 is greater than the sum of the elastic force of the upper spring 326 and the weight of the fixing block 322, the lower spring 327 drives the fixing block 322 to slide vertically upward and reset.

[0047] Reference Figure 1The detection device 4 includes a manual detection mechanism 41 and an automatic detection mechanism 42, both of which are arranged on the test workbench 1. The difference between the two is that the manual detection mechanism 41 needs to be manually operated, while the automatic detection mechanism 42 can be operated automatically. When the automatic detection mechanism 42 cannot operate normally, the manual detection mechanism 41 can be used to operate.

[0048] Reference Figure 1 and Figure 2 The manual detection mechanism 41 includes a placement seat 411 and a detection rod 43. The placement seat 411 is fixedly mounted on the test workbench 1, and the number of the placement seats 411 corresponds to the number of connection holes of the lower tube rack. The detection rod 43 is plugged into the placement seat 411, and each placement seat 411 is plugged with a detection rod 43. When the lower tube rack is installed on the support seat 2, the detection rod 43 is pulled out from the placement seat 411, and vertically penetrated from top to bottom through the connection hole of the lower tube rack and then inserted into the detection hole 21. If all the detection rods 43 can be inserted into the detection hole 21 after passing through the connection hole without error, it means that the connection hole position on the lower tube rack is accurate.

[0049] Reference Figure 1 and Figure 4 The automatic detection mechanism 42 is the same as the manual detection mechanism 41, and also includes a detection rod 43, and also includes a driving component 421 and a triggering component 422. The driving component 421 is used for installing the detection rod 43 and driving the detection rod 43 to move vertically downward, and the triggering component 422 is used to limit the driving component 421 and unlock it under a specific trigger condition so that the detection rod 43 can automatically move downward.

[0050] The driving assembly 421 includes a driving seat 4211, a sliding seat 4212 and a deceleration spring 4213. The driving seat 4211 is fixedly mounted on the test workbench 1, and a driving groove 4214 is vertically opened on one side of the driving seat 4211. The sliding seat 4212 slides vertically in the driving groove 4214, and one end thereof is always located in the driving groove 4214, and the other end is always located above the lower pipe rack. The detection rod 43 is installed at the bottom of one end of the sliding seat 4212 away from the driving seat 4211, and the number of the detection rods 43 is consistent with the number of the connection holes of the lower pipe rack. The detection rod 43 is always arranged vertically, and it is directly opposite to the connection hole of the lower pipe rack. The deceleration spring 4213 is arranged in the driving groove 4214, one end of which is connected to the sliding seat 4212, and the other end is connected to the driving seat 4211. When the sliding seat 4212 moves vertically downward, the deceleration spring 4213 can decelerate and buffer the sliding seat 4212, so that the detection rod 43 can be slowly inserted into the connecting hole of the lower pipe rack and enter the detection hole 21.

[0051] Reference Figure 1 , Figure 4 and Figure 5The trigger assembly 422 includes a locking piece 4221 , an unlocking block 4222 and an ejecting block 4223 .

[0052] Each support seat 2 is vertically provided with an ejection slot 22 on one side of the detection hole 21, and an ejection block 4223 is vertically slidably installed in the ejection slot 22. The unlocking block 4222 is horizontally slidably installed on the test workbench 1, one end of which is connected to the ejection block 4223 through a flexible strip 4224, and the other end is connected to the test workbench 1 through a reset spring 4225. The flexible strip 4224 is made of flexible material, and its length cannot be extended, but it can be bent.

[0053] The unlocking block 4222 has a first working state and a second working state. When the lower pipe rack is not placed on the support frame, the return spring 4225 drives the unlocking block 4222 to slide in the first working state, and the unlocking block 4222 drives the ejection block 4223 to move upward and extend out of the top of the support seat 2 through the flexible strip 4224. When the lower pipe rack is installed on the support seat 2, the bottom of the lower pipe rack abuts against the ejection block 4223 and drives the ejection block 4223 to retract into the ejection groove 22. At this time, the ejection block 4223 drives the unlocking block 4222 to slide in the second working state through the flexible strip 4224, and the return spring 4225 is compressed.

[0054] Reference Figure 1 , Figure 4 and Figure 6 The locking member 4221 includes a left locking portion 42211, a right locking portion 42212 and a driving spring 42213. The left locking portion 42211 and the right locking portion 42212 are both horizontally slidable on the driving seat 4211 and the top of the test workbench 1. The ends of the left locking portion 42211 and the right locking portion 42212 are both extended into the driving groove 4214 of the driving seat 4211 and abut against the bottom of the sliding seat 4212. The driving spring 42213 is arranged between the left locking portion 42211 and the right locking portion 42212 and has a tendency to drive the left locking portion 42211 and the right locking portion 42212 away from each other so that the ends of the left locking portion 42211 and the right locking portion 42212 withdraw from the driving groove 4214.

[0055] The bottom of the left locking part 42211 and the right locking part 42212 are both provided with a locking tongue 42214. When the driving spring 42213 drives the locking member 4221 to move, the locking tongue 42214 moves synchronously. The total number of the locking tongues 42214 corresponds to the number of the detection holes 21 one by one.

[0056] Reference Figure 4 , Figure 5 and Figure 6 An unlocking groove 42221 is provided on one side of the unlocking block 4222, and the unlocking groove 42221 is adapted to the locking tongue 42214.

[0057] When the unlocking block 4222 is in the first working position, the locking tongue 42214 abuts against one side of the unlocking block 4222 but is not inserted into the unlocking slot 42221. At this time, the driving spring 42213 is in a compressed state and the end of the left locking portion 42211 and the end of the right locking portion 42212 both extend into the driving slot 4214 of the driving seat 4211, so the detection rod 43 is locked and cannot move down.

[0058] When the unlocking block 4222 is in the second working position, the locking tongue 42214 is opposite to the unlocking slot 42221 of the unlocking block 4222, and the driving spring 42213 drives the locking piece 4221 to move horizontally and makes the locking tongue 42214 snap into the unlocking slot 42221, and the end of the left locking part 42211 and the end of the right locking part 42212 both withdraw from the driving slot 4214. At this time, the bottom of the sliding seat 4212 is not in contact with the locking piece 4221 and can therefore move downward under the action of gravity, and the detection rod 43 can slowly move downward and be inserted into the detection hole 21.

[0059] When all the detection rods 43 can be inserted into the detection holes 21 through the connection holes of the lower pipe rack at the same time, it means that the connection holes of the lower pipe rack are normal.

[0060] In this embodiment, only when the lower pipe rack is accurately placed on the support seat 2 and all the ejection blocks 4223 are retracted into the ejection grooves 22 at the same time, can all the locking tongues 42214 be synchronously and respectively snapped into the unlocking grooves 42221 of the corresponding unlocking blocks 4222. When any of the ejection blocks 4223 is not fully retracted, the locking member 4221 cannot be unlocked, and the detection rod 43 cannot move downward.

[0061] Combination Figures 1 to 6 The implementation principle of the utility model embodiment of a comprehensive inspection tool for automobile tube racks is as follows: the comprehensive inspection tool for automobile tube racks has manual inspection function and automatic inspection function. When manual inspection is adopted, the tube rack is placed on the support seat 2 and the inspection rods 43 are inserted into the inspection holes 21 of the support seat 2 through the connection holes of the tube rack one by one. When all the inspection rods 43 can be inserted correctly, it means that the tube rack is qualified. When automatic inspection is adopted, the tube rack is accurately placed on the support seat 2, and the tube rack drives all the ejection blocks 4223 to press down, so that the locking tongue 42214 cooperates with the unlocking block 4222 to unlock the unlocking piece, and the inspection rod 43 located on the sliding seat 4212 can move vertically downward slowly on the driving seat 4211 along with the sliding seat 4212 and insert into the inspection hole 21 of the support seat 2 through the connection holes of the tube rack. When all the inspection rods 43 can be inserted correctly, it means that the tube rack is qualified.

[0062] The above is only a preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A comprehensive inspection tool for a pipe rack under an automobile, comprising a test workbench (1), characterized in that: The test bench (1) also comprises a plurality of support seats (2) arranged on the test workbench (1) and used to support the lower pipe rack, a positioning device (3) used to position the lower pipe rack, and a detection device (4) used to detect the connection holes of the lower pipe rack; the top of the support seat (2) is vertically provided with detection holes (21) corresponding one-to-one to the connection holes of the lower pipe rack; the detection device (4) comprises a detection rod (43) corresponding one-to-one to the detection holes (21) and capable of vertically penetrating the connection holes of the lower pipe rack and being inserted into the detection holes (21); the positioning device (3) comprises a tail stop block (31) used to limit and fix the tail of the lower pipe rack, and a head end fixing component (32) used to magnetically attract the head end of the lower pipe rack so as to be close to the support seat (2) and fixed.

2. The comprehensive inspection fixture for automobile lower pipe rack according to claim 1 is characterized in that: The detection device (4) comprises a manual detection mechanism (41) and an automatic detection mechanism (42), wherein both the manual detection mechanism (41) and the automatic detection mechanism (42) have a detection rod (43); the manual detection mechanism (41) further comprises a placement seat (411) for inserting the detection rod (43), and the placement seat (411) corresponds one-to-one to the detection rod (43).

3. The comprehensive inspection fixture for automobile lower pipe rack according to claim 1 is characterized in that: The head end fixing assembly (32) comprises a fixing seat (321) and a fixing block (322) mounted on the fixing seat (321), wherein the fixing block (322) is embedded with a magnetic attraction sheet (324) that is magnetically attracted to the end of the lower pipe rack.

4. The comprehensive inspection fixture for automobile lower pipe rack according to claim 3 is characterized in that: The fixing seat (321) is vertically provided with a sliding groove (323), the fixing block (322) is vertically slidably installed in the sliding groove (323), the fixing block (322) has a supporting portion (325) for supporting the lower portion of the head end of the lower pipe rack, and the upper and lower ends of the fixing block (322) are respectively connected to an upper spring (326) and a lower spring (327).

5. The comprehensive inspection fixture for automobile lower pipe rack according to claim 4 is characterized in that: The fixing seat (321) is provided with elastic sheets (328) on both sides of the sliding groove (323); the fixing block (322) has an initial state and a downward pressing state; when the fixing block (322) is in the initial state, the elastic sheet (328) abuts against the lower end of the fixing block (322); when the fixing block (322) is in the downward pressing state, the fixing block (322) drives the elastic sheet (328) to deform and move downward.

6. The comprehensive inspection fixture for automobile lower pipe rack according to claim 2 is characterized in that: The automatic detection mechanism (42) further comprises a driving assembly (421) for mounting the detection rod (43) and driving the detection rod (43) to move downward, and a triggering assembly (422) for limiting the driving assembly (421) to trigger the detection rod (43) to move downward.

7. The comprehensive inspection fixture for automobile lower pipe rack according to claim 6 is characterized in that: The driving assembly (421) comprises a driving seat (4211) fixed to the testing workbench (1), a sliding seat (4212) vertically sliding on the driving seat (4211) and used for mounting the detection rod (43), and a deceleration spring (4213) arranged on the driving seat (4211) and used for driving the sliding seat (4212) to slowly descend.

8. The comprehensive inspection fixture for automobile lower pipe rack according to claim 7 is characterized in that: The trigger assembly (422) comprises a locking member (4221) slidably mounted on the driving seat (4211) and abutting against the bottom of the sliding seat (4212), an unlocking block (4222) slidably mounted on the test workbench (1) and used for unlocking the locking member (4221), and an ejection block (4223) vertically slidable on the support seat (2) and used for driving the unlocking block (4222) to slide; the support seat (2) is provided with an ejection groove (22) on one side of the detection hole (21), and the ejection block (4223) vertically slides in the ejection groove (22), and the ejection block (4223) protrudes from the top of the support seat (2) and abuts against the bottom of the lower pipe rack.

9. The comprehensive inspection fixture for automobile lower pipe rack according to claim 8, characterized in that: One end of the unlocking block (4222) is connected to the ejection block (4223) via a flexible strip (4224), and the other end is connected to the test workbench (1) via a return spring (4225); one side of the unlocking block (4222) is provided with an unlocking groove (42221) for the locking member (4221) to slide horizontally and snap into.

10. The comprehensive inspection fixture for automobile lower pipe rack according to claim 9, characterized in that: The locking member (4221) comprises a left locking portion (42211), a right locking portion (42212), and a driving spring (42213) which connects the left locking portion (42211) and drives the left locking portion (42212) to move away from the right locking portion (42212) and allows the sliding seat (4212) to slide downward along the height direction of the driving seat (4211). The bottom of the locking member (4221) has a locking tongue (42214) which corresponds to the detection hole (21) one by one. The locking member (4221) has a locked state and an unlocked state. When the locking member (4221) is in the locked state, the locking tongue (42214) is in the unlocked state. 2214) abuts against the side wall of each unlocking block (4222), and at this time, the locking member (4221) locks the sliding seat (4212); when the locking member (4221) is in the unlocking state, each ejection block (4223) moves downward and drives the unlocking groove (42221) to face the locking tongue (42214), and the driving spring (42213) drives each locking tongue (42214) to slide horizontally and get into the unlocking groove (42221), and at this time, the sliding seat (4212) moves downward under the action of gravity.

Images