A clamping tool for multi-directional detection of brake calipers

Abstract

This invention relates to the field of brake caliper testing technology, specifically a clamping fixture for multi-directional testing of brake calipers. It includes a support mechanism, a rain / fog testing mechanism mounted on the support mechanism, a caliper pitch adjustment mechanism mounted within the rain / fog testing mechanism, a brake disc temperature control mechanism mounted on the support mechanism, and a caliper under test clamped on the caliper pitch adjustment mechanism. The support mechanism includes a frame, with a rotating spindle movably mounted in two plate sections at the top of the frame. By setting a positioning element within the existing test frame and inserting a horizontally positioned brake disc temperature control mechanism at the outer end of the rotating spindle, when the positioning element moves laterally along the internal groove of the frame until the top tube of the positioning element is inserted into the hole at the outer end of the piston head, high-temperature steam is transferred via an air pipe to the closed inner cavity of the two brake discs. This simulates the temperature change of the brake discs on an actual vehicle due to changes in ambient temperature. At this point, the caliper under test can perform high-precision braking testing in conjunction with the two brake discs after the temperature change.

Description

Technical Field

[0001] This invention relates to the field of brake caliper testing technology, specifically a clamping fixture for multi-directional testing of brake calipers. Background Technology

[0002] Brake caliper testing refers to the process of systematically inspecting and testing the calipers (also known as brake calipers or brake calipers), a key component of the automotive braking system, in order to ensure that they can work safely and reliably under various operating conditions.

[0003] Existing integrated test benches for brake calipers have certain drawbacks in practical operation. The clamping fixtures on existing test benches mainly use multiple support plates to support the simulated spindle. However, the existing single-structure clamping fixtures cannot simulate dynamic temperature control between the caliper under test and the simulated brake disc. Furthermore, the external heat radiation cannot directly act on the brake disc. Therefore, there is an error in the braking test accuracy of the brake caliper under test and the brake disc on the actual vehicle after dynamic heating.

[0004] In view of this, a clamping fixture for multi-directional detection of brake calipers was designed to solve the above problems. Summary of the Invention

[0005] The present invention aims to solve one of the technical problems existing in the prior art or related technologies.

[0006] Therefore, the technical solution adopted in this invention is as follows: A clamping fixture for multi-directional testing of brake calipers includes a support mechanism, a rain and fog testing mechanism mounted on the support mechanism, a caliper pitch adjustment mechanism mounted within the rain and fog testing mechanism, a brake disc temperature control mechanism mounted on the support mechanism, and a caliper to be tested clamped on the caliper pitch adjustment mechanism. The support mechanism includes a frame, with a rotating spindle movably mounted within two plate segments at the top of the frame, and a drive gear mounted on the rotating spindle. The rain and fog testing mechanism includes a bottom test cover disposed inside the frame, and four bottom test cover lengths are provided on the back of the bottom test cover. The studs, four long studs on the bottom cover, are mounted on two plate sections on the top of the test stand by nuts; the clamping adjustment mechanism includes two clamps mounted on the inner wall of the bottom test cover, and a truss is mounted on the outside of the two clamps. Two clamping plates are mounted on the truss, and a linkage component adapted to mesh with the drive gear is movably mounted inside the two clamping plates. A second lead screw is movably mounted inside the truss, and a slide is mounted on the second lead screw. Two load-bearing rods are mounted inside the slide, and two pads are provided on the load-bearing rods; the caliper to be tested is clamped on the inside of the four pads.

[0007] In a preferred embodiment, the present invention can be further configured as follows: a sliding groove is provided in the plate segment at the bottom of the platform, and a first lead screw is provided in the sliding groove. An I-shaped column head is provided on the rod end of the first lead screw that passes through the sliding groove, and a positioning member is snapped onto the outside of the I-shaped column head. An air pipe is installed in the pipe segment outside the positioning member, and the air pipe is adapted to communicate with the inner cavity of the positioning member.

[0008] In a preferred embodiment, the present invention may be further configured such that: an insertion hole is provided at the outer end of the rotating spindle; The vehicle body temperature control mechanism includes a column head installed in the socket, a plurality of evenly distributed guide slots are opened in the middle of the column head, and the guide slots are connected to the inner cavity of the column head. A spring is provided on the outside of the column head. The other end of the column head has a hole, and the tube section at the top of the positioning component is adapted to be inserted into the hole at the other end of the column head.

[0009] In a preferred embodiment, the present invention can be further configured such that: an insert plate is inserted into the rectangular slot at the outer end of the column head, and a locking bolt that presses against the insert plate is threaded onto the plate segment outside the column head; The top section of the positioning component has an annular groove, and the insert plate is fitted into the annular groove.

[0010] In a preferred embodiment, the present invention can be further configured as follows: a main clamp and a secondary clamp are provided on the outside of the column head, and two extension rods are provided on the side of the main clamp away from the spring, and two symmetrically distributed brake discs are inserted into the outside of the two extension rods. A sealing gasket is provided in the groove of the inner side of the brake disc, and a nut is installed on the threaded section of the extension rod extending to the outside of the secondary clamp.

[0011] In a preferred embodiment, the present invention may be further configured such that: the middle part of the brake disc has evenly distributed arc-shaped slots that are connected to the flow guide slot.

[0012] In a preferred embodiment, the present invention can be further configured as follows: two symmetrically distributed observation windows are installed in the slots on both sides of the bottom test cover, and a top test cover is provided on the top of the bottom test cover; two symmetrically distributed bottom cover short studs are provided on the back of both the bottom test cover and the top test cover; gaskets are installed on two adjacent bottom cover short studs; and a drain pipe is installed at the bottom of the bottom test cover. Both the bottom and top test covers are equipped with pipe clamps, and the oil pipe on the caliper under test extends through the two pipe clamps after they are closed.

[0013] In a preferred embodiment, the present invention can be further configured such that: a spray head is installed on the top test cover, the spray head is fixedly installed in the slot at the top of the spray head, and the nozzle at the bottom of the spray head is located directly above the brake disc and the caliper under test.

[0014] In a preferred embodiment, the present invention may be further configured such that: a ring is provided on the outside of the truss, and two combined bolts are installed in the truss and the ring; after closing, a bearing is installed in the circular hole formed by the truss and the ring, and the rotating spindle is installed in the bearing.

[0015] In a preferred embodiment, the present invention can be further configured as follows: the linkage is composed of a deflection gear, a shaft and a T-shaped gear, a gear disk is provided on the second lead screw segment and the T-shaped gear is adapted to mesh with the gear disk, and hydraulic components are fixedly installed in the two clamps, and the outer end of the hydraulic sub-rod in the hydraulic component is movably installed in the hole at the outer end of the T-shaped gear.

[0016] By adopting the above technical solution, the beneficial effects achieved by the present invention are as follows: 1. This invention sets up a positioning component in the existing test bench and inserts a horizontally placed disc temperature adjustment mechanism into the outer end of the rotating spindle. When the positioning component moves laterally along the internal slide groove of the bench until the top tube of the positioning component is inserted into the hole at the outer end of the column head, the high-temperature steam transferred to the inner cavity of the two brake discs after the closure is transferred through the air pipe can simulate the temperature change of the brake discs on the actual vehicle due to changes in ambient temperature. At this time, the caliper under test can cooperate with the two brake discs after the temperature change to perform high-precision braking tests.

[0017] 2. This invention sets the horizontally positioned clamping adjustment mechanism outside the rotating spindle, and fixes the horizontally positioned clamping adjustment mechanism on the inner wall of the bottom test cover. As the hydraulic components control the linkage components to move towards the drive gear until they mesh with each other, the second lead screw, which is assisted in rotation, will push the slide, the two load-bearing rods and the caliper under test towards the two brake discs to adjust the pressure. This improves the compressive strength of the caliper under test and can also detect the service life of the caliper under test after being subjected to pressure.

[0018] 3. By reducing the test space between the caliper and the brake disc, this invention can further reduce interference factors that could affect the test accuracy of the caliper. At the same time, the smaller test space allows for more precise dispensing of the test solution medium, which can improve the braking effect of the caliper on the brake disc under different pressure conditions. Furthermore, the test medium is easy to recycle, improving the cleanliness of the test platform. Attached Figure Description

[0019] Figure 1 This is a schematic diagram illustrating the use of the present invention; Figure 2 This is a three-dimensional schematic diagram of the present invention; Figure 3 This is an exploded schematic diagram of the rain and fog testing mechanism of the present invention; Figure 4 For the present invention Figure 2 A partial 3D schematic diagram; Figure 5This is a schematic diagram of the bearing mechanism of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of point A in the middle; Figure 7 This is an exploded view of the vehicle body temperature control mechanism of the present invention; Figure 8 For the present invention Figure 7 Enlarged view of point B in the middle; Figure 9 For the present invention Figure 4 A partial schematic diagram; Figure 10 This is an exploded view of the clamping adjustment mechanism of the present invention.

[0020] Figure label: 100. Bearing mechanism; 110. Frame; 120. First lead screw; 130. Rotary spindle; 140. Drive gear; 150. Spring; 160. Positioning component; 170. Air pipe; 200. Rain and fog testing mechanism; 210. Bottom test cover; 2101. Bottom cover long stud; 2102. Bottom cover short stud; 2103. Drain pipe; 220. Top test cover; 230. Spray head; 240. Gasket; 250. Pipe clamp; 260. Observation window; 300. Temperature control mechanism for the brake disc; 310. Column head; 3101. Flow guide slot; 320. Insert plate; 330. Locking bolt; 340. Main clamp; 350. Secondary clamp; 360. Brake disc; 3601. Arc-shaped slot; 370. Sealing gasket; 400. Clamping adjustment mechanism; 410. Truss; 4101. Clamping plate; 4102. Clamp; 420. Ring buckle; 4201. Combination bolt; 430. Bearing; 440. Hydraulic component; 450. Linkage component; 460. Second lead screw; 470. Slide; 480. Load-bearing rod; 490. Foot pad; 500. Caliper to be tested. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features described herein can be combined with each other.

[0022] It should be understood that these descriptions are merely exemplary and are not intended to limit the scope of the invention.

[0023] The following describes, with reference to the accompanying drawings, some embodiments of the present invention, a clamping fixture for multi-directional detection of brake calipers. Example

[0024] Combination Figures 1 to 10 As shown, the present invention provides a clamping fixture for multi-directional testing of brake calipers, comprising a support mechanism 100, a rain and fog testing mechanism 200 mounted on the support mechanism 100, a clamping distance adjustment mechanism 400 mounted within the rain and fog testing mechanism 200, a brake disc temperature control mechanism 300 mounted on the support mechanism 100, and a caliper 500 to be tested clamped on the clamping distance adjustment mechanism 400. The support mechanism 100 provides a support carrier for the rain and fog testing mechanism 200 and the brake disc temperature control mechanism 300. The rain and fog testing mechanism 200 reduces the testing space and minimizes interference factors that could affect the testing of the caliper 500. The brake disc temperature control mechanism 300 cooperates with the caliper 500 to perform dynamic braking testing. The clamping distance adjustment mechanism 400 controls the dynamic pressure of the caliper 500 on the brake disc temperature control mechanism 300, thereby improving the accuracy of braking testing of the caliper 500 under multiple factors.

[0025] The bearing mechanism 100 includes a frame 110. A rotating spindle 130 is movably installed in two plate sections at the top of the frame 110, and a drive gear 140 is installed on the rotating spindle 130. A sliding groove is opened in the plate section at the bottom of the frame 110, and a first lead screw 120 is provided in the sliding groove. An I-shaped column head is provided on the rod end of the first lead screw 120 that passes through the sliding groove, and a positioning member 160 is snapped onto the outside of the I-shaped column head. An air pipe 170 is installed in the pipe section outside the positioning member 160, and the air pipe 170 is adapted to connect to the inner cavity of the positioning member 160. A insertion hole is provided at the outer end of the rotating spindle 130; The rain and fog testing mechanism 200 includes a bottom test cover 210 disposed inside the test stand 110, and four bottom cover long studs 2101 are provided on the back of the bottom test cover 210. The four bottom cover long studs 2101 are installed on two plate sections on the top of the test stand 110 by nuts. The brake disc temperature control mechanism 300 includes a column head 310 installed in the insertion hole. The column head 310 has multiple evenly distributed guide slots 3101 in the middle, and the guide slots 3101 are connected to the inner cavity of the column head 310. A spring 150 is provided on the outside of the column head 310. A main clamp 340 and a secondary clamp 350 are provided on the outside of the column head 310. Two extension rods are provided on the side of the main clamp 340 away from the spring 150. Two symmetrically distributed brake discs 360 are inserted into the outside of the two extension rods. A sealing gasket 370 is provided in the groove of the inner disc opening of the brake disc 360. A nut is installed on the threaded section of the extension rod that extends through to the outside of the secondary clamp 350. The brake disc 360 has evenly distributed arc-shaped slots 3601 on the tube wall in the middle part, which are connected to the guide slots 3101. The other end of the column head 310 has a hole, and the tube section at the top of the positioning member 160 is adapted to be inserted into the hole at the other end of the column head 310. A plate 320 is inserted into a rectangular slot at the outer end of the column head 310, and a locking bolt 330 is installed on the inner thread of the plate segment outside the column head 310, which is pressed against the plate 320. The top pipe section of the positioning component 160 is provided with an annular groove, and the insert plate 320 is adapted to be snapped into the annular groove; The clamp adjustment mechanism 400 includes two clamps 4102 installed on the inner wall of the bottom test cover 210, and a truss 410 is installed on the outside of the two clamps 4102. Two clamping plates 4101 are installed on the truss 410, and a linkage 450 adapted to mesh with the drive gear 140 is movably installed in the two clamping plates 4101. A second lead screw 460 is movably installed inside the truss 410. A slide 470 is installed on the second lead screw 460. Two load-bearing rods 480 are installed in the slide 470, and two pads 490 are provided on the load-bearing rods 480. The caliper under test 500 is clamped inside the four feet 490.

[0026] Preferably, four symmetrically distributed T-shaped feet are provided on both sides of the bottom plate of the platform 110, and two pre-installed holes are provided in the T-shaped feet. In order to simulate the movement of the device and the actual vehicle on a bumpy road, expansion bolts are inserted into the pre-installed holes inside the T-shaped feet. The bearing mechanism 100 can be fixed to the external vibration platform by multiple expansion bolts. After the vibration platform is controlled to perform longitudinal high-frequency vibration by the external drive device, the fixed device can simulate the braking detection of the actual vehicle on a bumpy road. One end of the spring 150 is welded to a circular washer at the outer end of the rotating spindle 130, while the other end of the spring 150 is welded to the main clamp 340. Both the main clamp 340 and the auxiliary clamp 350 have multiple circumferentially distributed locking blocks on their inner sides. The outer wall of the brake disc 360 has multiple circumferentially distributed transverse grooves, and the locking blocks are adapted to engage in the transverse grooves to enhance the stability of the main clamp 340, the auxiliary clamp 350, and the two brake discs 360 after assembly. In addition, the truss 410 has two slides symmetrically distributed along the slide groove as the center, and the two load-bearing rods 480 pass through the two slides respectively. The rectangular plate segment in the middle of the slide block 470 is adapted to pass through the slide groove inside the truss 410. After the hydraulic component 440 is operated by the client, the hydraulic sub-rod in the hydraulic component 440 can reciprocate to control the engagement and disengagement of the linkage component 450 with the drive gear 140 and the second lead screw 460, which facilitates the dynamic adjustment of the spacing between the caliper 500 under test and the two brake discs 360. Example

[0027] Combination Figure 3 and Figure 7As shown, based on Embodiment 1, two symmetrically distributed observation windows 260 are installed in the slots on both sides of the bottom test cover 210, and a top test cover 220 is provided on the top of the bottom test cover 210. Two symmetrically distributed bottom cover short studs 2102 are provided on the back of both the bottom test cover 210 and the top test cover 220. Gaskets 240 are installed on two adjacent bottom cover short studs 2102, and a drain pipe 2103 is installed at the bottom of the bottom test cover 210. Both the bottom test cover 210 and the top test cover 220 are equipped with pipe clamps 250, and the oil pipe adapter on the caliper under test 500 extends through to the outside of the two pipe clamps 250 after they are closed. A spray head 230 is installed on the top test cover 220. The spray head 230 is fixedly installed in the slot at the top of the spray head 230, and the nozzle at the bottom of the spray head 230 is located directly above the brake disc 360 and the caliper under test 500.

[0028] Preferably, the inner walls of the bottom test cover 210 and the top test cover 220 are both smooth coated structures to avoid water mist from sticking to the walls during testing and to improve the efficient discharge of the solution after the test. Rubber sealing gaskets are fixedly installed on the adjacent ports of the bottom test cover 210 and the top test cover 220 to enhance the sealing of the inner cavity of the bottom test cover 210 and the top test cover 220 after closing. The external pipe section of the spray head 230 is connected to an external flexible hose. According to the actual test medium requirements, acidic, alkaline, high-temperature solutions or oils are selectively sprayed directly from the nozzle at the bottom of the spray head 230 onto the two brake discs 360 and the caliper under test 500 through the external flexible hose. Combined with the dynamic changes in pressure between the caliper under test 500 and the two brake discs 360, high-precision testing of the braking effect of the caliper under test 500 on the two brake discs 360 is achieved within the smallest test space. At the same time, it improves the cleanliness of the inner cavity of the bottom test cover 210 and the top test cover 220 after the test, which is convenient for subsequent maintenance. Example

[0029] Combination Figure 5 and Figure 10 As shown, in the above embodiment, a ring 420 is provided on the outside of the truss 410, and two combined bolts 4201 are installed in the truss 410 and the ring 420. After closing, a bearing 430 is installed in the circular hole formed by the truss 410 and the ring 420, and the rotating spindle 130 is installed in the bearing 430. The linkage 450 consists of a deflection gear, a shaft, and a T-shaped gear. A gear disk is provided on the second lead screw 460, and the T-shaped gear is adapted to mesh with the gear disk. Hydraulic components 440 are fixedly installed in the two clamps 4102, and the outer end of the hydraulic sub-rod in the hydraulic component 440 is movably installed in the hole at the outer end of the T-shaped gear.

[0030] Preferably, the truss 410 is also provided with a rectangular slot, and the gear disk in the second lead screw 460 is located in the middle of the rectangular slot. After the hydraulic component 440 is operated by the client, as the hydraulic rod in the hydraulic component 440 extends outward, the linkage component 450 pushed by the hydraulic rod will move towards the rotating main shaft 130 along the two clamping plates 4101. Finally, the deflection gear in the linkage component 450 will mesh with the drive gear 140. At the same time, the T-shaped gear will mesh with the gear disk. While the rotating main shaft 130 and the drive gear 140 drive the plate temperature adjustment mechanism 300 to rotate, they can also provide the linkage component 450 and the second lead screw 460 with the kinetic energy for rotation, which is convenient for dynamically adjusting the distance of the sliding block 470, the two load-bearing rods 480 and the four pads 490. The test caliper 500 held by the four pads 490 will be pressed and will adjust the pressure with the two brake discs 360. An anti-slip rubber pad is fixedly installed in the groove on the inner side of the foot 490.

[0031] The working principle and usage process of this invention are as follows: First, the horizontally placed test platform 110 is fixedly installed on the upper surface of the vibration platform using multiple expansion bolts. Then, the bottom test cover 210 is arranged inside the test platform 110 until the four bottom cover long studs 2101 on the back of the bottom test cover 210 are adapted to be inserted into the two plate sections at the top of the test platform 110. Then, the nuts on the threaded sections of the two load-bearing rods 480 are reversed using a wrench. Next, the two outermost pads 490 are removed, and the caliper 500 to be tested is inserted along the two load-bearing rods 480. The caliper 500 to be tested is then fixed and clamped with the help of the two outer pads 490 and the two nuts. At the same time, the outer wheel of the first lead screw 120 is rotated. As the first lead screw 120 reverses and moves laterally inward along the groove of the bottom plate of the platform 110, the first lead screw 120 after moving laterally will push the positioning member 160 towards the outer end of the column head 310. Finally, the tube section at the top of the positioning member 160 is fitted into the hole at the outer end of the column head 310. Then, the insert plate 320 is inserted along the rectangular groove at the outer end of the column head 310 until the arc-shaped port at the bottom of the insert plate 320 is fitted into the annular groove of the tube section at the top of the positioning member 160. The insert plate 320 is then fixed with locking bolts 330. When the caliper 500 under test needs to be tested, the hydraulic component 440 is operated through the client. As the hydraulic rod inside the hydraulic component 440 extends outward and drives the linkage 450 to move laterally outward along the inside of the two clamping plates 4101, the deflection gear inside the linkage 450 will mesh with the drive gear 140. As the rotating spindle 130 and the drive gear 140 rotate, the driven linkage 450 will assist the second lead screw 460 in rotating. The slide 470 and the two load-bearing rods 480 cooperate with the fixed caliper 500 under test to insert along the second lead screw 460 toward the outer surface of the two brake discs 360. When the caliper under test 500 is plugged into the outside of the two brake discs 360 after they are closed, the column head 310 driven by the high speed of the rotating spindle 130 will drive the two brake discs 360 to rotate at high speed. The two brake discs 360 will rotate along the inner groove of the caliper under test 500. The braking effect on the two brake discs 360 is detected by controlling the extension and retraction of the brake pads inside the caliper under test 500 through the client. During the braking test of the caliper 500, high-temperature steam is injected into the cylinder head 310 and the inner cavity of the two brake discs 360 through the air pipe 170 to simulate the temperature rise of the two brake discs 360 in different environments. The spray head 230, which is used in conjunction with the closed bottom test cover 210 and top test cover 220, can spray the corresponding test solution medium onto the rotating brake disc 360 and the caliper 500. At this time, the different solution media, together with the controllable temperature rise of the two brake discs 360, can dynamically simulate and detect the braking effect of the caliper 500, which is conducive to improving the test accuracy of the caliper 500 in dynamic state. At the same time, the high-frequency vibration of the entire device on the surface of the vibration platform can further simulate the braking effect of the caliper 500 on the actual vehicle wheel hub brake disc.

[0032] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A clamping fixture for multi-directional detection of brake calipers, comprising a support mechanism (100), characterized in that, It also includes a rain and fog testing mechanism (200) mounted on the carrier (100), a clamping adjustment mechanism (400) mounted in the rain and fog testing mechanism (200), a chassis temperature control mechanism (300) mounted on the carrier (100), and a test caliper (500) clamped on the clamping adjustment mechanism (400). The bearing mechanism (100) includes a frame (110), and a rotating spindle (130) is movably installed in two plate segments at the top of the frame (110), and a drive gear (140) is installed on the rotating spindle (130). The rain and fog testing mechanism (200) includes a bottom test cover (210) set inside the test stand (110), and four bottom cover long studs (2101) are provided on the back of the bottom test cover (210). The four bottom cover long studs (2101) are installed on two plate segments on the top of the test stand (110) by nuts. The clamp adjustment mechanism (400) includes two clamps (4102) installed on the inner wall of the bottom test cover (210), and a truss (410) is installed on the outside of the two clamps (4102). Two clamping plates (4101) are installed on the truss (410), and a linkage (450) adapted to mesh with the drive gear (140) is movably installed in the two clamping plates (4101). A second lead screw (460) is movably installed inside the truss (410), and a slide (470) is installed on the second lead screw (460). Two load-bearing rods (480) are installed in the slide (470), and two pads (490) are provided on the load-bearing rods (480). The caliper under test (500) is clamped inside the four feet (490).

2. The clamping fixture for multi-directional detection of brake calipers according to claim 1, characterized in that, The bottom plate section of the platform (110) is provided with a sliding groove, and a first lead screw (120) is provided in the sliding groove. The first lead screw (120) passes through the rod end in the sliding groove and is provided with an I-shaped column head. A positioning member (160) is snapped onto the outside of the I-shaped column head. An air pipe (170) is installed in the pipe section outside the positioning member (160), and the air pipe (170) is adapted to connect to the inner cavity of the positioning member (160).

3. The clamping fixture for multi-directional detection of brake calipers according to claim 1, characterized in that, The outer end of the rotating spindle (130) is provided with a insertion hole; The vehicle temperature control mechanism (300) includes a column (310) installed in the socket. The column (310) has a plurality of evenly distributed guide slots (3101) in the middle, and the guide slots (3101) are connected to the inner cavity of the column (310). A spring (150) is provided on the outside of the column (310). The other end of the column head (310) has a hole, and the tube section at the top of the positioning member (160) is adapted to be inserted into the hole at the other end of the column head (310).

4. A clamping fixture for multi-directional detection of brake calipers according to claim 3, characterized in that, A insert plate (320) is inserted into the rectangular slot at the outer end of the column head (310), and a locking bolt (330) that is pressed against the insert plate (320) is installed on the plate segment outside the column head (310). The top section of the positioning component (160) has an annular groove, and the insert plate (320) is adapted to be snapped into the annular groove.

5. A clamping fixture for multi-directional detection of brake calipers according to claim 3, characterized in that, The column head (310) is provided with a main clamp (340) and a secondary clamp (350) on its outside. The main clamp (340) is provided with two extension rods on the side away from the spring (150). Two symmetrically distributed brake discs (360) are inserted into the outside of the two extension rods. A sealing gasket (370) is provided in the groove of the inner disc opening of the brake disc (360). A nut is installed on the threaded section of the extension rod that extends through to the outside of the secondary clamp (350).

6. A clamping fixture for multi-directional detection of brake calipers according to claim 5, characterized in that, The brake disc (360) has evenly distributed arc-shaped slots (3601) on the tube wall in the middle part, which are connected to the guide slot (3101).

7. A clamping fixture for multi-directional detection of brake calipers according to claim 1, characterized in that, Two symmetrically distributed observation windows (260) are installed in the slots on both sides of the bottom test cover (210), and a top test cover (220) is provided on the top of the bottom test cover (210). Two symmetrically distributed bottom cover short studs (2102) are provided on the back of both the bottom test cover (210) and the top test cover (220). Gaskets (240) are installed on two adjacent bottom cover short studs (2102). A drain pipe (2103) is installed at the bottom of the bottom test cover (210). Both the bottom test cover (210) and the top test cover (220) are equipped with pipe clamps (250), and the oil pipe on the caliper to be tested (500) is adapted to extend through the two pipe clamps (250) after closure.

8. A clamping fixture for multi-directional detection of brake calipers according to claim 7, characterized in that, A spray head (230) is installed on the top test cover (220). The spray head (230) is fixedly installed in the slot at the top of the spray head (230), and the nozzle at the bottom of the spray head (230) is located directly above the brake disc (360) and the caliper (500) under test.

9. A clamping fixture for multi-directional detection of brake calipers according to claim 1, characterized in that, The truss (410) is provided with a ring (420) on the outside, and two combination bolts (4201) are installed in the truss (410) and the ring (420). After closing, a bearing (430) is installed in the circular hole formed by the truss (410) and the ring (420), and a rotating spindle (130) is installed in the bearing (430).

10. A clamping fixture for multi-directional detection of brake calipers according to claim 1, characterized in that, The linkage (450) is composed of a deflection gear, a shaft and a T-shaped gear. A gear disk is provided on the second lead screw (460) segment, and the T-shaped gear is adapted to mesh with the gear disk. A hydraulic component (440) is fixedly installed in the two clamps (4102), and the outer end of the hydraulic sub-rod in the hydraulic component (440) is movably installed in the hole at the outer end of the T-shaped gear.

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