A quick positioning and detecting device for automobile wheel hub

Abstract

The application discloses a kind of automobile hub quick positioning detection devices, it is related to automobile hub detection technical field, including workbench, the workbench is provided with hydraulic fixing assembly, placement table assembly and threaded drive assembly;The placement table assembly includes fixedly installed installation cylinder in the center of workbench, and installation cylinder top is fixed with mounting ring plate;The application utilizes the buffer support component, i.e. cooperation of supporting spring, piston column and supporting spring, is automatically compressed when placing hub, buffer adapts to different weights, to avoid rigid impact;At the same time, when placing hub, the greater its weight, the greater the distance of placement table drops, at the same time, tripod moves downward along with placement table, and under the action of guide wheel, push tripod and movable frame to extend outward, to be able to adaptively adjust the support range of placement table according to the specification of automobile hub, and improve the stability when placing automobile hub.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile hub detection, and in particular to a rapid positioning and detection device for automobile hub. BACKGROUND

[0002] In the field of automobile hub manufacturing and quality detection, accurate positioning and rapid detection of automobile hubs of various specifications are key links to ensure product quality and production efficiency. Currently, the positioning and detection of such hubs are usually based on fixed workbenches.

[0003] The support structure of a conventional workbench is usually fixed or has a limited adjustment range. This rigid design is difficult to adapt to hubs of different specifications, resulting in the inability of the hub to be stably placed at the center detection reference position. In particular, for large-size truck hubs, the mismatch between the support points and the back structure of the hub can cause tilting risks, limiting the versatility of the equipment. At the same time, there is usually a large static friction force between the workbench surface (usually made of metal or hard composite material) and the bottom surface of the hub. After the operator or the mechanical hand initially places the hub on the workbench, additional physical effort or complex fine-tuning actions are often required to overcome this friction force in order to accurately move the hub to the preset detection reference point or clamping position. This not only increases the operation difficulty and labor intensity, but also seriously slows down the positioning efficiency. Finally, to solve the problem of friction, some improved schemes embed a ball structure on the surface of the workbench. This design indeed effectively reduces the resistance of the hub moving on the surface of the workbench, making it easier to push. However, this simple ball structure has a key defect: it has no active or passive auxiliary positioning function. When the operator tries to push the hub to the target position or when the automatic clamping mechanism starts to act, the hub lacking effective limiting or guiding is prone to uncontrolled sliding or deviation on the ball. This "sliding" phenomenon not only greatly reduces the positioning accuracy, causing the detection reference to be misaligned, but also can cause the hub to be misaligned during clamping and even cause safety risks such as damage to the equipment or the hub, so the existing technology has great limitations. SUMMARY

[0004] The purpose of the present application is to provide a rapid positioning and detection device for automobile hub to solve the problems raised in the background art.

[0005] The technical solution of the present application is: a rapid positioning and detection device for automobile hub, comprising a workbench, a hydraulic fixing assembly, a placement table assembly, and a threaded drive assembly are arranged on the workbench.

[0006] The placing table assembly comprises a mounting cylinder fixedly installed at the center of the workbench, a mounting ring plate fixed to the top of the mounting cylinder, and a placing table arranged above the mounting ring plate, wherein a buffer support assembly is arranged between the placing table and the mounting ring plate, a plurality of sliding grooves are formed in the placing table, a through groove is formed in the bottom of each sliding groove, and a movable frame is slidably installed in each sliding groove; and the movable frame and the top of the placing table are rollingly installed with uniformly distributed rolling balls.

[0007] A triangular frame is slidably installed in each through groove, the triangular frame is fixedly connected with the movable frame, a return spring one is fixedly connected to one side of the triangular frame and one end of the through groove, the top of the mounting ring plate is fixedly installed with equidistantly distributed support rods, and the top end of each support rod is rotatably installed with a guide wheel matched with the inclined surface of the triangular frame.

[0008] The top of the workbench is fixedly installed with a plurality of pairs of mounting seats, each pair of mounting seats is provided with a torsion spring shaft, a positioning support arm is fixed to the torsion spring shaft, and a pair of roller bodies one is rotatably installed at the top of the positioning support arm.

[0009] Preferably, the buffer support assembly comprises a plurality of supporting cylinders fixedly installed on the mounting ring plate, a piston column is slidably installed in each supporting cylinder, a supporting spring is fixed between the bottom of the piston column and the bottom of the supporting cylinder, and the top ends of the plurality of piston columns are connected to the bottom of the placing table.

[0010] Preferably, each positioning support arm has an L-shaped structure, and a groove is formed in the top of each positioning support arm.

[0011] Preferably, a contact ring frame coaxially arranged is movably sleeved on the outside of the mounting cylinder, a roller body two is rotatably installed at the bottom end of each positioning support arm, and the roller body two is in contact with the bottom of the contact ring frame.

[0012] Preferably, the hydraulic fixing assembly comprises an oil storage tank fixedly installed on the workbench and an annular mother pipe arranged above the workbench, a plurality of support hoop frames are fixed to the outer wall of the annular mother pipe, and the support hoop frames are fixed to the surface of the workbench.

[0013] Preferably, the bottom of the oil storage tank is fixedly connected with a bottom through pipe, the other end of the bottom through pipe is fixedly penetrated through the corresponding support hoop frame and fixedly connected with the annular mother pipe.

[0014] Preferably, a plurality of uniformly distributed branch pipes are fixedly connected to the inner side of the annular mother pipe, each branch pipe is fixedly penetrated through the support hoop frame, a piston push rod is slidably installed in each branch pipe, a rubber block is fixedly installed at the end of each piston push rod, and a return spring two is fixed between the piston push rod and the branch pipe.

[0015] Preferably, the threaded drive assembly comprises a drive motor fixedly installed at the bottom end of the mounting cylinder, and the output shaft of the drive motor is fixedly connected with a threaded lead screw, and the threaded lead screw is threadedly connected with a threaded cylinder, the bottom end of the threaded cylinder is fixedly installed with a pressure sensor, and the bottom end of the pressure sensor is fixedly connected with a piston plate, and the piston plate is sealingly and slidably connected with the oil storage tank.

[0016] Preferably, the outer peripheral wall of the threaded cylinder is fixedly connected with a plurality of guide insertion rods, the bottom outer wall of the abutting ring frame is fixedly connected with a plurality of stand columns, and the stand columns are slidably connected with the workbench in the vertical direction, each of the stand columns is provided with an oblong slot matched with the guide insertion rod, and the guide insertion rod and the inner bottom of the oblong slot are fixedly connected with an abutting spring.

[0017] Preferably, the top of the workbench is fixedly installed with a gantry stand, and the middle end of the gantry stand is fixedly connected with an electric telescopic rod, and the end of the electric telescopic rod is fixedly connected with a detection module.

[0018] The present application provides a rapid positioning detection device for an automobile hub by improving the prior art, which has the following improvements and advantages compared with the prior art.

[0019] Firstly, the buffer support assembly, i.e., the supporting cylinder, the piston column and the supporting spring, are matched with each other to automatically compress when the automobile hub is placed, so as to buffer and adapt to different weights and avoid rigid impact; at the same time, when the automobile hub is placed, the greater the weight, the greater the descending distance of the placing table, and at the same time, the tripod moves downward with the placing table and is pushed outward to extend under the action of the guide wheel, so as to adaptively adjust the supporting range of the placing table according to the specifications of the automobile hub and improve the stability when the automobile part is placed.

[0020] Secondly, the balls are arranged, which is beneficial to reducing the friction between the surface of the placing table and the automobile hub during clamping, positioning and fixing of the hub; when the abutting ring frame moves downward, the plurality of positioning support arms can be pushed upward to overturn by abutting with the roller bodies, so as to play an auxiliary lifting role, so as to facilitate further positioning and clamping of the hub; at the same time, the pressure between the hub and the placing table can be reduced during the lifting process, so that the balls are arranged to further reduce the pressure and the friction, so as to facilitate the movement of the hub on the surface of the placing table and improve the convenience of positioning and clamping.

[0021] Thirdly, when the driving motor is controlled to start, the threaded screw rod can be driven to rotate, and under the action of the column and the guide rod, the threaded cylinder and the piston plate move downward, and under the action of the hydraulic pressure, the plurality of piston push rods extend out and perform clamping and fixing operations; the pressure sensor can monitor the downward pressure of the piston plate in real time, and the external controller drives the motor to adjust the clamping force, so as to avoid part deformation caused by local overload or uneven clamping. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the specific embodiments of the present application or the technical solutions in the prior art, the drawings needed in the specific embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0023] Figure 1 It is a whole first perspective three-dimensional structure schematic diagram of the present application.

[0024] Figure 2 It is a whole second perspective three-dimensional structure schematic diagram of the present application.

[0025] Figure 3 It is a workbench three-dimensional structure schematic diagram of the present application.

[0026] Figure 4 It is a hydraulic fixing assembly three-dimensional structure schematic diagram of the present application.

[0027] Figure 5 It is a workbench partial cut structure schematic diagram of the present application.

[0028] Figure 6 It is a Figure 5 enlarged structure schematic diagram of A in the present application.

[0029] Figure 7 It is a positioning support arm three-dimensional structure schematic diagram of the present application.

[0030] Figure 8 It is a placement table cut structure schematic diagram of the present application.

[0031] Figure 9 It is a placement table assembly exploded structure schematic diagram of the present application.

[0032] Figure 10 It is a threaded cylinder, column and piston plate three-dimensional structure schematic diagram of the present application.

[0033] Figure 11 It is a Figure 5 enlarged structure schematic diagram of B in the present application.

[0034] Reference signs:

[0035] 1, workbench; 2, annular mother pipe; 3, gantry stand; 4, placing table; 5, movable frame; 6, tripod; 7, reset spring I; 8, sliding groove; 9, through groove; 10, branch pipe; 11, support hoop frame; 12, electric telescopic rod; 13, detection module; 14, ball; 15, oil storage tank; 16, bottom through pipe; 17, piston push rod; 18, rubber stop block; 19, reset spring II; 20, mounting cylinder; 21, driving motor; 22, threaded screw; 23, threaded cylinder; 24, pressure sensor; 25, piston plate; 26, stand column; 27, long circular groove; 28, guide insertion rod; 29, support rod; 30, guide wheel; 31, mounting ring plate; 32, supporting cylinder; 33, piston column; 34, supporting spring; 35, positioning support arm; 36, mounting seat; 37, roller body I; 38, roller body II; 39, torsional spring shaft; 40, abutting ring frame; 41, abutting spring. DETAILED DESCRIPTION

[0036] The present application will be described in detail below, and the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, not all. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] The present application provides a kind of automobile wheel hub quick positioning detection device by improving, and the technical solutions of the present application are:

[0038] As Figures 1 to 11 shown, the present application provides a kind of automobile wheel hub quick positioning detection device, including workbench 1, workbench 1 is provided with hydraulic fixing assembly, placing table assembly and threaded drive assembly;Hydraulic fixing assembly is set, for realizing the fixation of wheel hub by hydraulic action, and makes each clamping point force consistent.

[0039] Placing table assembly includes fixedly installed in the center of workbench 1 installation cylinder 20, and installation cylinder 20 top is fixed with mounting ring plate 31, and mounting ring plate 31 top is provided with placing table 4, and buffer support assembly is arranged between placing table 4 and mounting ring plate 31, a plurality of sliding grooves 8 are formed in placing table 4, and through groove 9 is formed in the bottom of sliding groove 8, movable frame 5 is slidably installed in each sliding groove 8, and uniformly distributed ball 14 is rollingly installed on the top of movable frame 5 and placing table 4;By setting ball 14, it is beneficial to reduce the friction between the surface of placing table 4 and automobile wheel hub in clamping, positioning and fixing wheel hub.

[0040] The triangular frame 6 is slidably installed in each through groove 9, the triangular frame 6 is fixedly connected with the movable frame 5, one side of the triangular frame 6 is fixedly connected with a reset spring 7 at one end of the through groove 9, the top of the mounting ring plate 31 is fixedly installed with equidistantly distributed support rods 29, and the top end of the support rod 29 is rotatably installed with a guide wheel 30 matched with the inclined surface of the triangular frame 6; by the above structure, when the automobile hub is placed on the placing table 4, under the action of the gravity of the automobile hub, the placing table 4 can be pressed to move downward; when the automobile hub is placed, the greater the weight, the greater the descending distance of the placing table 4, at the same time, the triangular frame 6 moves downward with the placing table 4, and under the action of the guide wheel 30, the triangular frame 6 and the movable frame 5 are pushed to extend outward, thereby the support range of the placing table 4 can be adaptively adjusted according to the specifications of the automobile hub, and the stability when the automobile parts are placed is improved.

[0041] The top of the workbench 1 is fixed with a plurality of pairs of mounting seats 36, each pair of mounting seats 36 is provided with a torsion spring shaft 39, and the torsion spring shaft 39 is fixed with a positioning support arm 35, and the top of the positioning support arm 35 is rotatably installed with a pair of roller bodies 37.

[0042] As a further scheme of the present application, as shown in the figure, Figures 7-9 The buffer support assembly includes a plurality of support barrels 32 fixed at equal distances on the mounting ring plate 31, each support barrel 32 is slidably installed with a piston column 33, the bottom of the piston column 33 and the inner bottom of the support barrel 32 are fixed with a support spring 34, and the top ends of the plurality of piston columns 33 are connected to the bottom of the placing table 4; through the above structure, the piston column 33, the support spring 34 and the support barrel 32 are matched with each other, which can play a certain buffering effect when the automobile hub is placed; at the same time, the descending distance can be adaptively adjusted according to the weight of the automobile hub.

[0043] Further, each positioning support arm 35 is in L-shaped structure, and a groove is formed in the top of each positioning support arm 35; the groove can avoid direct interference between the positioning support arm 35 and the movable frame 5.

[0044] As a further scheme of the present application, as shown in the figure, Figures 8-10As shown, the outer side of the mounting cylinder 20 is movably sleeved with the abutting ring frame 40 arranged coaxially, and the bottom end of each positioning support arm 35 is rotatably installed with the roller body two 38 in contact with the bottom of the abutting ring frame 40; through the above structure, when the abutting ring frame 40 moves downward, the multiple positioning support arms 35 can be pushed to overturn upward by abutting against the roller body two 38, thereby playing an auxiliary lifting role, so as to facilitate further positioning and clamping of the hub; at the same time, during the lifting process, the pressure between the hub and the placement table 4 can be reduced, so that in the case of being provided with the ball 14, the pressure is further reduced and the friction is reduced, thereby facilitating the movement of the hub on the surface of the placement table 4, improving the convenience of positioning and clamping, and avoiding the "slip" situation during hydraulic clamping.

[0045] As a further scheme of the present application, the hydraulic fixing assembly comprises an oil storage tank 15 fixedly installed on the workbench 1 and an annular mother pipe 2 arranged above the workbench 1, and the outer wall of the annular mother pipe 2 is fixedly provided with multiple support hoop frames 11, and each support hoop frame 11 is fixed to the surface of the workbench 1.

[0046] Further, the bottom of the oil storage tank 15 is fixedly communicated with a bottom communication pipe 16, and the other end of the bottom communication pipe 16 is fixedly penetrated through the corresponding support hoop frame 11 and fixedly communicated with the annular mother pipe 2.

[0047] Further, the inner side of the annular mother pipe 2 is fixedly communicated with multiple uniformly distributed branch pipes 10, each of which is fixedly penetrated through the support hoop frame 11, and each of the branch pipes 10 is slidably installed with a piston push rod 17, and the end of the piston push rod 17 is fixedly installed with a rubber abutting block 18. In order to reset the multiple piston push rods 17 when the hydraulic pressure in the annular mother pipe 2 is reduced, the piston push rod 17 and the branch pipe 10 are fixedly provided with a reset spring two 19; through the above structure, when the hydraulic pressure in the annular mother pipe 2 is increased, the multiple piston push rods 17 can be pushed to extend outward, and under the action of the hydraulic pressure, the extrusion force applied by the end of each piston push rod 17 can be ensured to be consistent, avoiding the situation that the clamping force is not uniform, thereby affecting the clamping effect.

[0048] As a further scheme of the present application, as shown in Figure 5 、 Figure 7 、 Figure 8 and Figure 10As shown, the threaded drive assembly includes a drive motor 21 fixedly installed at the bottom end of the mounting cylinder 20, and the output shaft of the drive motor 21 is fixedly connected with a threaded lead screw 22, the threaded lead screw 22 is threadedly connected with a threaded cylinder 23, the bottom end of the threaded cylinder 23 is fixedly installed with a pressure sensor 24, the bottom end of the pressure sensor 24 is fixedly connected with a piston plate 25, and the piston plate 25 is sealingly and slidably connected with the oil storage tank 15. It should be noted that the thread angle of the threaded lead screw 22 and the threaded cylinder 23 in the present application is less than the friction angle, thereby ensuring the stability of the hydraulic fixing assembly for fixing the automobile hub. At the same time, the pressure sensor 24 is electrically connected with an external controller, and the external controller is electrically connected with the drive motor 21. By using the pressure sensor 24, the pressure under the piston plate 25 can be monitored in real time, and the drive motor 21 adjusts the clamping force through the external controller, so as to avoid deformation of the parts caused by local overload or uneven clamping.

[0049] Further, the outer peripheral wall of the threaded cylinder 23 is fixedly connected with a plurality of guide insertion rods 28, the bottom outer wall of the abutting ring frame 40 is fixedly connected with a plurality of stand columns 26, and the stand columns 26 are slidably connected with the workbench 1 in the vertical direction. Each stand column 26 is provided with an oblong slot 27 matched with the guide insertion rod 28, and the guide insertion rod 28 and the inner bottom of the oblong slot 27 are fixedly connected with an abutting spring 41.

[0050] Through the above structure, when the drive motor 21 is controlled to start, the threaded lead screw 22 can be driven to rotate, and under the action of the stand column 26 and the guide insertion rod 28, the threaded cylinder 23 and the piston plate 25 can move downward, and the plurality of piston push rods 17 can be extended and clamped and fixed by hydraulic action. At the same time, when the guide insertion rod 28 moves downward, the abutting spring 41 applies pressure to the stand column 26, and the stand column 26 pulls the abutting ring frame 40 to move downward, and the plurality of positioning support arms 35 are lifted to support the hub in cooperation with the roller body 37.

[0051] Further, the top of the workbench 1 is fixedly installed with a gantry stand 3, and the middle end of the gantry stand 3 is fixedly connected with an electric telescopic rod 12, and the end of the electric telescopic rod 12 is fixedly connected with a detection module 13. When detecting the automobile hub, the electric telescopic rod 12 can be used to push the detection module 13 to move vertically to realize the detection of the automobile hub. The detection module 13 can be flexibly selected according to the detection items, for example, an industrial CCD camera can be selected to detect the appearance defects of the automobile hub, and an ultrasonic flaw detector can be selected to detect the automobile hub.

[0052] Specific working method is: use, car wheel hub is placed on the placing table 4, utilize car wheel hub gravity compression buffer support component, specific piston column 33 is down, support spring 34 is stored energy, and make placing table 4 sink;When placing car wheel hub, its weight is greater, the falling distance of placing table 4 is greater, at the same time, tripod 6 follows placing table 4 and moves downward, and under the action of guide wheel 30, push tripod 6 and movable frame 5 to extend to the outside, further according to the specification of car wheel hub, self-adapting adjustment support range of placing table 4, and improve the stability when placing car parts;

[0053] Control starting drive motor 21, drive screw rod 22 to rotate, at the same time, under the action of column 26 and guide plug rod 28, make threaded cylinder 23 and piston plate 25 move downward, and utilize hydraulic action, make multiple piston push rods 17 extend and carry out clamping fixed job;Utilize the pressure sensor 24 set, real-time monitoring piston plate 25 down pressure, through external controller, drive motor 21 adjusts clamping force, to avoid local overload or clamping unevenly caused by part deformation;At the same time, when guide plug rod 28 moves downward, by the pressure applied to column 26 by abutting spring 41, and through column 26, pull abutting ring frame 40 to move downward, and promote multiple positioning support arms 35 to lift, cooperate with roller body one 37, support wheel hub;Specifically, when abutting ring frame 40 moves downward, by abutting with roller body two 38, push multiple positioning support arms 35 to turn upward, so as to play the auxiliary lifting role, so as to facilitate further positioning and clamping of wheel hub;At the same time, in the lifting process, reduce the pressure between wheel hub and placing table 4, so that in the case of setting ball 14, further reduce the pressure and reduce the friction, so as to facilitate the movement of wheel hub on the surface of placing table 4, to improve the convenience of positioning and clamping;Finally, when detecting car wheel hub, the detection module 13 can be pushed to move vertically by using the electric telescopic rod 12 set, to realize the detection of car wheel hub, wherein the detection module 13 can be flexibly selected according to detection items, for example, industrial CCD camera can be selected to detect the appearance defect of car wheel hub;And selecting ultrasonic flaw detector, then the car wheel hub is detected.

[0054] The above description enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the application. Accordingly, the present application is not to be limited to the embodiments shown herein but is to be accorded the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. A quick positioning detection device for automobile wheel hub, comprising a workbench (1), characterized in that, The workbench (1) is provided with a hydraulic fixing assembly, a placing table assembly and a threaded drive assembly; The placing table assembly comprises an installation cylinder (20) fixedly installed at the center of the workbench (1), and an installation ring plate (31) is fixed to the top of the installation cylinder (20), and a placing table (4) is arranged above the installation ring plate (31), and a buffer support assembly is arranged between the placing table (4) and the installation ring plate (31), a plurality of sliding grooves (8) are formed in the placing table (4), and a through groove (9) is formed in the bottom of each sliding groove (8), and a movable frame (5) is slidably installed in each sliding groove (8), and the movable frame (5) and the placing table (4) are rollingly installed with evenly distributed rolling balls (14) on the top thereof; A tripod (6) is slidably installed in each through groove (9), and the tripod (6) is fixedly connected with the movable frame (5), and a reset spring (7) is fixedly connected to one side of the tripod (6) and one end of the through groove (9), and the top of the installation ring plate (31) is fixedly installed with support rods (29) which are evenly distributed, and the top end of the support rod (29) is rotatably installed with a guide wheel (30) which is matched with the inclined surface of the tripod (6); The top of the workbench (1) is fixed with a plurality of pairs of mounting seats (36), each pair of mounting seats (36) is provided with a torsion spring shaft (39), and the torsion spring shaft (39) is fixedly provided with a positioning support arm (35), and a pair of roller bodies (37) are rotatably installed on the top of the positioning support arm (35); The outer side of the installation cylinder (20) movably sheathes a coaxially arranged abutting ring frame (40), and the bottom end of each positioning support arm (35) is rotatably installed with a roller body (38), and the roller body (38) is in contact with the bottom of the abutting ring frame (40); The threaded drive assembly comprises a drive motor (21) fixedly installed at the bottom end of the installation cylinder (20), and the output shaft of the drive motor (21) is fixedly connected with a threaded lead screw (22), and the threaded lead screw (22) is threadedly connected with a threaded cylinder (23), and the bottom end of the threaded cylinder (23) is fixedly installed with a pressure sensor (24), and the bottom end of the pressure sensor (24) is fixedly connected with a piston plate (25), and the piston plate (25) is sealingly and slidably connected with an oil storage tank (15); The outer peripheral wall of the threaded cylinder (23) is fixedly connected with a plurality of guide insertion rods (28), the bottom outer wall of the abutting ring frame (40) is fixedly connected with a plurality of vertical columns (26), and the vertical columns (26) are slidably connected with the workbench (1) in the vertical direction, each vertical column (26) is provided with an oblong slot (27) matched with the guide insertion rod (28), and the abutting spring (41) is fixedly connected between the guide insertion rod (28) and the inner bottom of the oblong slot (27).

2. The quick positioning detection device for automobile wheel hub according to claim 1, characterized in that: The buffer support assembly comprises a plurality of support cylinders (32) fixedly installed on the installation ring plate (31), and a piston column (33) is slidably installed in each support cylinder (32), and a supporting spring (34) is fixed between the bottom of the piston column (33) and the inner bottom of the support cylinder (32), and the top ends of the plurality of piston columns (33) are jointly connected to the bottom of the placing table (4).

3. The quick positioning detection device for automobile wheel hub according to claim 1, characterized in that: Each positioning support arm (35) is in L-shaped structure, and a groove is formed in the top of each positioning support arm (35).

4. The quick positioning detection device for automobile wheel hub according to claim 1, characterized in that: The hydraulic fixing assembly comprises an oil storage tank (15) fixedly installed on the workbench (1) and an annular mother pipe (2) arranged above the workbench (1), a plurality of support hoops (11) are fixed to the outer wall of the annular mother pipe (2), and the support hoops (11) are fixed to the surface of the workbench (1).

5. The quick positioning detection device for automobile wheel hub according to claim 4, characterized in that: The bottom of the oil storage tank (15) is fixedly connected with a bottom through pipe (16), and the other end of the bottom through pipe (16) penetrates through the corresponding support hoop (11) and is fixedly connected with the annular mother pipe (2).

6. The quick positioning detection device for automobile wheel hub according to claim 5, characterized in that: A plurality of uniformly distributed branch pipes (10) are fixedly connected to the inner side of the annular mother pipe (2), each branch pipe (10) penetrates through the support hoop (11), a piston push rod (17) is slidably installed in each branch pipe (10), a rubber block (18) is fixedly installed at the end of the piston push rod (17), and a reset spring (19) is fixed between the piston push rod (17) and the branch pipe (10).

7. The rapid positioning and detecting device for automobile wheel hub according to any one of claims 1-6, characterized in that: The top of the workbench (1) is fixedly installed with a gantry stand (3), the middle end of the gantry stand (3) is fixedly connected with an electric telescopic rod (12), and the end of the electric telescopic rod (12) is fixedly connected with a detection module (13).

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