Pressure measurement detection device and system for automobile brake calipers

Abstract

The invention relates to the technical field of automobile detection, in particular to a pressure detection device and system for automobile brake calipers, which comprises a test board, a mounting bracket, a to-be-detected caliper, a hydraulic pump and a detection mechanism, and is characterized in that the detection mechanism comprises a mounting base, a mounting arm, a positive and negative tooth lead screw group, two sliding seats, two adjustable cross arms, two adjusting arms and two detection modules; when the detection module is used for detecting the to-be-detected calipers, the positive and negative tooth lead screw group is started to drive the two sliding seats to move on the mounting arm in the opposite or opposite directions, so that the height of the detection module is adjusted, the position of the adjusting arm is adjusted through the adjustable cross arm, and then the detection module corresponds to a piston of the to-be-detected calipers. Through cooperation of the detection module and the hydraulic pump, detection of the to-be-detected calipers is completed, by adopting the above structure, because the height and the position of the detection module are adjustable, the detection module can detect the to-be-detected calipers of different specifications, and the universality is higher.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile detection, and in particular to a pressure testing device and system for automobile brake calipers. Background Art

[0002] With the vigorous development of the automobile industry, the configuration of vehicle braking systems has become increasingly advanced, from early drum brakes to later front discs and rear drums, and then to the current common four-wheel disc brakes. Nowadays, some high-end cars, especially high-performance models, not only use four-wheel disc brakes, but also their brake calipers have been upgraded from common floating calipers to fixed opposed multi-piston calipers. This opposed multi-piston caliper uses the master cylinder to push each piston to pop out together and push the two brake pads to the brake disc together. After releasing the master cylinder, the piston loses its force and no longer applies pressure to the brake pad. Its braking pressure is more uniform and it is convenient to increase the effective braking area of ​​the brake pad. Unlike the traditional large single-piston floating caliper, the release of its braking force puts higher requirements on the return ability of each piston, thereby avoiding the problem of eccentric brake wear. In order to better detect the return ability and movement resistance of the piston, a detection device suitable for multi-piston calipers is urgently needed to facilitate the detection of the piston movement state.

[0003] In order to solve the above problems, a pressure test device for automobile brake calipers is disclosed in the patent document with publication number CN220398897U, which includes: a test bench, a mounting plane is provided on the top of the test bench, a mounting bracket and a detection bracket are vertically installed on the mounting plane, and a mounting hole for fixing the caliper to be tested is provided on one side of the mounting bracket; a detection module, the detection module is arranged on the detection bracket, and a detection channel is provided between two opposite pistons in the caliper to be tested, and the two ends of the detection channel cooperate with detection columns, and a spring is provided between the two opposite detection columns. This technical solution provides a pressure test device for automobile brake calipers, and the detection column in the detection module applies a return thrust to the released piston under the action of the spring, and intuitively detects the reset status of the piston through the pointer and the degree of the scale, thereby providing an accurate test basis for research and development tests.

[0004] However, the structures of the detection bracket and the detection module in the existing pressure testing device for automobile brake calipers are relatively simple, and the position of the detection channel on the detection module is fixed, which cannot adapt to brake calipers of different specifications to be tested and has poor versatility. Summary of the invention

[0005] The purpose of the present invention is to provide a pressure testing device and system for automobile brake calipers, aiming to solve the technical problems that the structures of the detection bracket and the detection module in the existing pressure testing device for automobile brake calipers are relatively simple, the position of the detection channel on the detection module is fixed, and it cannot adapt to brake calipers to be tested of different specifications, and the versatility is poor.

[0006] To achieve the above-mentioned object, the present invention provides a pressure test device for automobile brake calipers, comprising a test bench, a mounting bracket, a caliper to be tested, a hydraulic pump and a detection mechanism, wherein the mounting bracket is mounted on the upper surface of the test bench, the caliper to be tested is mounted on the mounting bracket, the output end of the hydraulic pump is connected to the caliper to be tested through an oil pipe, and pistons are arranged on both sides of the interior of the caliper to be tested;

[0007] The detection mechanism includes a mounting base, a mounting arm, a positive and negative threaded screw group, two sliding seats, two adjustable cross arms, two adjustment arms and two detection modules. The mounting base is mounted on the upper surface of the test bench, the mounting arm is arranged on the upper surface of the mounting base, two sliding seats are slidably arranged on the mounting arm, the positive and negative threaded screw group is arranged inside the mounting arm, the positive and negative threaded screw group is used to drive the two sliding seats to move synchronously, each sliding seat is mounted with the adjustable cross arm, the output end of each adjustable cross arm is arranged with the adjustment arm, and the detection module is arranged at one end of each adjustment arm close to the caliper to be tested.

[0008] Among them, the forward and reverse thread screw group includes a first servo motor, a forward and reverse threaded rod and two ball screw nut pairs, the first servo motor is installed inside the mounting arm, the forward and reverse threaded rod is arranged at the output end of the first servo motor, the ball screw nut pairs are arranged at both ends of the forward and reverse threaded rod, and each of the ball screw nut pairs is respectively connected to one of the sliding seats.

[0009] Among them, each of the adjustable cross arms includes an arm body, a driving component and a sliding block, the arm body is installed on the sliding seat, the sliding block is slidably arranged on the arm body, the driving component is arranged inside the arm body, the output end of the driving component is connected to the sliding block, and the adjusting arm is installed on the sliding block.

[0010] Among them, each of the driving components includes a second servo motor, a screw and a screw sleeve. The second servo motor is installed inside the arm body. The output end of the second servo motor is provided with the screw. The screw sleeve is provided on the screw, and the screw sleeve is connected to the corresponding sliding block.

[0011] Among them, each of the detection modules includes a detection block, two detection columns, a spring and a scale, the detection block is installed at the top of the adjusting arm, a detection channel is set through the detection block, the detection columns are slidably set at both ends of the detection channel, the spring is set between the two detection columns, the scale is set at the top of the detection block, and a pointer is set at one end of each detection column located inside the detection channel, the pointer extends to the outside of the detection block through a slide groove set on the detection channel and corresponds to the scale.

[0012] Among them, the pressure testing device of the automobile brake caliper also includes two protective plates, each of the sliding blocks is penetrated by a through slot, the protective plate is installed at the through slot, and the end of the protective plate is connected to the corresponding end of the arm body.

[0013] Wherein, fixing blocks are arranged on both sides of the end of each protective plate, and the fixing blocks are connected to the side walls of the corresponding end of the arm body.

[0014] Wherein, the inner bottom of each through groove is provided with a plurality of mounting holes, and a ball is provided inside each mounting hole.

[0015] An auxiliary support is provided at one end of the positive and negative threaded rod away from the first servo motor, one end of the auxiliary support is installed outside the positive and negative threaded rod, and the other end of the auxiliary support is connected to the mounting arm.

[0016] The present invention also provides a pressure measurement and detection system for automobile brake calipers, comprising the pressure measurement and detection device for automobile brake calipers as described above, and also comprising a hydraulic source, wherein the output end of the hydraulic source is connected to the input end of the hydraulic pump through an oil pipe.

[0017] The present invention provides a pressure testing device and system for an automobile brake caliper. When the detection module is used to detect the caliper to be tested, the forward and reverse screw groups are started to drive the two sliding seats to move toward or away from each other on the mounting arm, thereby adjusting the height of the detection module, and adjusting the position of the adjustment arm through the adjustable cross arm, so that the detection module is made to correspond to the piston of the caliper to be tested, so that the detection of the caliper to be tested is completed through the cooperation of the detection module and the hydraulic pump. With the above structure, since the height and position of the detection module are adjustable, the detection module can detect calipers to be tested of different specifications, and the versatility is stronger. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a schematic structural diagram of a pressure testing device for a vehicle brake caliper according to a first embodiment of the present invention.

[0020] Figure 2 The present invention provides Figure 1 A magnified view of the local structure at A.

[0021] Figure 3 It is a schematic structural diagram of the detection mechanism in the first embodiment of the present invention.

[0022] Figure 4 The present invention provides Figure 3 A magnified view of the local structure at B.

[0023] Figure 5 The present invention provides Figure 3 A schematic diagram of the structure from another perspective.

[0024] Figure 6 The present invention provides Figure 5 A magnified view of the local structure at C.

[0025] Figure 7 It is a schematic structural diagram of the detection mechanism in the second embodiment of the present invention.

[0026] Figure 8 2 is a schematic diagram of the structure of the sliding block in the second embodiment of the present invention.

[0027] Fig. 9 The present invention is a schematic structural diagram of a pressure testing system for automobile brake calipers.

[0028] 101-test bench, 102-mounting bracket, 103-caliper to be tested, 104-hydraulic pump, 105-mounting base, 106-mounting arm, 107-sliding seat, 108-adjusting arm, 109-first servo motor, 110-positive and negative threaded rod, 111-ball screw nut pair, 112-arm body, 113-sliding block, 114-second servo motor, 115-screw, 116-screw sleeve, 117-detection block, 118-detection column, 119-spring, 120-scale, 121-piston, 122-pointer, 123-slide, 201-protective plate, 202-through slot, 203-fixed block, 204-mounting hole, 205-ball, 206-auxiliary support, 301-hydraulic source. DETAILED DESCRIPTION

[0029] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0030] First embodiment:

[0031] See also Figures 1 to 6 ,in Figure 1 is a schematic structural diagram of a pressure testing device for a vehicle brake caliper according to a first embodiment, Figure 2 yes Figure 1 The enlarged view of the local structure at A. Figure 3 is a schematic diagram of the structure of the detection mechanism in the first embodiment, Figure 4 yes Figure 3 The enlarged view of the local structure at B, Figure 5 yes Figure 3 A structural diagram from another perspective, Figure 6 yes Figure 5 A magnified view of the local structure at C.

[0032] The present invention provides a pressure test device for automobile brake calipers, comprising a test bench 101, a mounting bracket 102, a caliper to be tested 103, a hydraulic pump 104 and a detection mechanism, wherein the detection mechanism comprises a mounting base 105, a mounting arm 106, a positive and negative thread screw group, two sliding seats 107, two adjustable cross arms, two adjustment arms 108 and two detection modules, wherein the positive and negative thread screw group comprises a first servo motor 109, a positive and negative threaded rod 110 and two ball bearings 205, a screw nut pair 111, each of the adjustable cross arms comprises an arm body 112, a drive assembly and a sliding block 113, each of the drive assemblies comprises a second servo motor 114, a screw 115 and a screw sleeve 116, and each of the detection modules comprises a detection block 117, two detection columns 118, a spring 119 and a scale 120. The above-mentioned scheme solves the problems that the structures of the detection bracket and the detection module in the existing pressure testing device for automobile brake calipers are relatively simple, the position of the detection channel on the detection module is fixed, it cannot adapt to brake calipers to be tested of different specifications, and the versatility is poor. It can be understood that the above-mentioned scheme can be used in the structure of the pressure testing device for automobile brake calipers.

[0033] According to this specific embodiment, the mounting bracket 102 is installed on the upper surface of the test bench 101, and the caliper 103 to be tested is installed on the mounting bracket 102. The output end of the hydraulic pump 104 is connected to the caliper 103 to be tested through an oil pipe, and pistons 121 are provided on both sides of the interior of the caliper 103 to be tested. The mounting base 105 is installed on the upper surface of the test bench 101, and the mounting arm 106 is provided on the upper surface of the mounting base 105. Two sliding seats 107 are slidably provided on the mounting arm 106, and the positive and negative thread screw group is provided inside the mounting arm 106. The positive and negative thread screw group is used to drive the two sliding seats 107 to move synchronously, and the adjustable cross arm is installed on each sliding seat 107, and the output end of each adjustable cross arm is provided with the adjusting Arm 108, each of the adjusting arms 108 is provided with the detection module at one end close to the caliper 103 to be tested. When the caliper 103 to be tested is tested using the detection module, the forward and reverse screw groups are started to drive the two sliding seats 107 to move toward or away from each other on the mounting arm 106, thereby adjusting the height of the detection module, and adjusting the position of the adjusting arm 108 through the adjustable cross arm, so that the detection module corresponds to the piston 121 of the caliper 103 to be tested, so that the detection module and the hydraulic pump 104 cooperate to complete the detection of the caliper 103 to be tested. With the above structure, since the height and position of the detection module are adjustable, the detection module can detect the calipers 103 to be tested of different specifications, and is more versatile.

[0034] Among them, the first servo motor 109 is installed inside the mounting arm 106, and the output end of the first servo motor 109 is provided with the positive and negative threaded rod 110, and the two ends of the positive and negative threaded rod 110 are provided with the ball 205 screw nut pair 111, and each of the ball 205 screw nut pair 111 is respectively connected to one of the sliding seats 107. When the first servo motor 109 is started, the positive and negative threaded rod 110 is driven to rotate. Since each of the ball 205 screw nut pair 111 is respectively connected to one of the sliding seats 107, the two sliding seats 107 are driven to move toward or away from each other on the mounting arm 106.

[0035] Secondly, the arm body 112 is installed on the sliding seat 107, and the sliding block 113 is slidably set on the arm body 112. The driving component is set inside the arm body 112, and the output end of the driving component is connected to the sliding block 113. The adjusting arm 108 is installed on the sliding block 113. The driving component is started. Since the output end of the driving component is connected to the sliding block 113, the sliding block 113 is driven to slide on the arm body 112, thereby completing the adjustment of the position of the adjusting arm 108.

[0036] At the same time, the second servo motor 114 is installed inside the arm body 112, and the output end of the second servo motor 114 is provided with the screw rod 115, and the screw rod sleeve 116 is provided on the screw rod 115. The screw rod sleeve 116 is connected to the corresponding sliding block 113. When the second servo motor 114 is started, the screw rod 115 is driven to rotate. Since the screw rod sleeve 116 is connected to the sliding block 113, the sliding block 113 is driven to slide on the arm body 112.

[0037] In addition, the detection block 117 is installed at the top of the adjustment arm 108, and a detection channel is set through the detection block 117. The detection columns 118 are slidably set at both ends of the detection channel, and the spring 119 is set between the two detection columns 118. The scale 120 is set at the top of the detection block 117, and a pointer 122 is set at one end of each detection column 118 located inside the detection channel. The pointer 122 extends to the outside of the detection block 117 through a slide groove 123 set on the detection channel and corresponds to the scale 120. After the detection module corresponds to the piston 121, hydraulic oil is transported to the inside of the caliper 103 to be tested through the hydraulic pump 104 to push the piston 121 out, so that The detection column 118 is pushed toward the inside of the detection channel so that the outer end surface of the detection column 118 is flush with the outer wall of the detection block 117. At this time, the spring 119 is compressed. When the hydraulic pump 104 is released, the piston 121 loses its force. Under the action of the spring 119, the detection column 118 resets the piston 121. The coefficient of the spring 119 is set according to the diameter of each piston 121 in the caliper 103 to be tested, so as to meet the return thrust of the piston 121. The tester observes the reset state of the piston 121 through the cooperation of the scale 120 and the pointer 122 to judge whether the movement state of the piston 121 of the caliper 103 to be tested is qualified, thereby meeting the factory and after-sales inspection requirements of the product.

[0038] When using the pressure testing device of a vehicle brake caliper of the present embodiment, when the caliper 103 to be tested is tested using the testing module, the forward and reverse screw groups are started to drive the two sliding seats 107 to move toward or away from each other on the mounting arm 106, thereby adjusting the height of the testing module, and adjusting the position of the adjusting arm 108 through the adjustable cross arm, so that the testing module corresponds to the piston 121 of the caliper 103 to be tested, thereby completing the testing of the caliper 103 to be tested through the cooperation of the testing module and the hydraulic pump 104. With the above structure, since the height and position of the testing module are adjustable, the testing module can test the calipers 103 to be tested of different specifications, and has stronger versatility. When the testing module corresponds to the piston 121, the hydraulic pump 104 is used to move the adjusting arm 108 to the mounting arm 106. Hydraulic oil is transported inside the caliper 103 to push out the piston 121, so that the detection column 118 is pushed into the interior of the detection channel, so that the outer end surface of the detection column 118 is flush with the outer wall of the detection block 117. At this time, the spring 119 is compressed. When the hydraulic pump 104 is released, the piston 121 loses its force. Under the action of the spring 119, the detection column 118 resets the piston 121. The coefficient of the spring 119 is set according to the diameter of each piston 121 in the caliper 103 to be tested, so as to meet the return thrust of the piston 121. The tester observes the reset state of the piston 121 through the cooperation of the scale 120 and the pointer 122 to judge whether the movement state of the piston 121 of the caliper 103 to be tested is qualified, thereby meeting the factory and after-sales inspection requirements of the product.

[0039] Second embodiment:

[0040] Based on the first embodiment, please refer to Figure 7 and Figure 8 , Figure 7 is a schematic diagram of the structure of the detection mechanism in the second embodiment, Figure 8 FIG. 1 is a schematic diagram of the structure of the sliding block in the second embodiment.

[0041] The present invention provides a pressure testing device for an automobile brake caliper, which also includes two protection plates 201 .

[0042] According to this specific embodiment, each of the sliding blocks 113 is penetrated by a through slot 202, and the protective plate 201 is installed at the through slot 202. The end of the protective plate 201 is connected to the corresponding end of the arm body 112. The end face of the arm body 112 is protected by the protective plate 201 to prevent the external environment from affecting the operation of the driving component.

[0043] Among them, fixing blocks 203 are arranged on both sides of the end of each protective plate 201, and the fixing blocks 203 are connected to the side walls of the corresponding end of the arm body 112. The installation of the protective plate 201 is completed by the setting of the fixing blocks 203.

[0044] Secondly, a plurality of mounting holes 204 are provided at the inner bottom of each through groove 202, and a ball bearing 205 is provided inside each mounting hole 204. Through the setting of the mounting holes 204 and the ball bearings 205, the sliding block 113 can slide more smoothly on the protective plate 201.

[0045] In addition, an auxiliary support member 206 is provided at one end of the proximal and reciprocal threaded rod 110 away from the first servo motor 109, one end of the auxiliary support member 206 is installed on the outside of the proximal and reciprocal threaded rod 110, and the other end of the auxiliary support member 206 is connected to the mounting arm 106. Through the setting of the auxiliary support member 206, the proximal and reciprocal threaded rod 110 is supported, so that the structure of the proximal and reciprocal threaded rod 110 is more stable when the proximal and reciprocal threaded rod 110 rotates.

[0046] When using the pressure testing device of an automobile brake caliper of this embodiment, the end face of the arm body 112 is protected by the protective plate 201 to prevent the external environment from affecting the operation of the driving component, and the setting of the mounting hole 204 and the ball 205 makes it possible for the sliding block 113 to slide on the protective plate 201 more smoothly. At the same time, the auxiliary support member 206 is used to support the positive and negative threaded rod 110, so that the positive and negative threaded rod 110 has a more stable structure when rotating.

[0047] See also Fig. 9 The present invention also provides a pressure measurement and detection system for automobile brake calipers, including the pressure measurement and detection device for automobile brake calipers as described above, and also including a hydraulic source 301, the output end of the hydraulic source 301 is connected to the input end of the hydraulic pump 104 through an oil pipe.

[0048] In this embodiment, hydraulic oil is provided to the entire detection device through the provision of the hydraulic source 301 .

[0049] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A pressure test device for automobile brake calipers, comprising a test bench, a mounting bracket, a caliper to be tested and a hydraulic pump, wherein the mounting bracket is mounted on the upper surface of the test bench, the caliper to be tested is mounted on the mounting bracket, the output end of the hydraulic pump is connected to the caliper to be tested through an oil pipe, and pistons are arranged on both sides of the caliper to be tested, characterized in that: It also includes testing agencies; The detection mechanism includes a mounting base, a mounting arm, a positive and negative threaded screw group, two sliding seats, two adjustable cross arms, two adjustment arms and two detection modules. The mounting base is mounted on the upper surface of the test bench, the mounting arm is arranged on the upper surface of the mounting base, two sliding seats are slidably arranged on the mounting arm, the positive and negative threaded screw group is arranged inside the mounting arm, the positive and negative threaded screw group is used to drive the two sliding seats to move synchronously, each sliding seat is mounted with the adjustable cross arm, the output end of each adjustable cross arm is arranged with the adjustment arm, and the detection module is arranged at one end of each adjustment arm close to the caliper to be tested.

2. The pressure testing device for automobile brake calipers according to claim 1, characterized in that: The forward and reverse thread screw group includes a first servo motor, a forward and reverse thread rod and two ball screw nut pairs. The first servo motor is installed inside the mounting arm. The forward and reverse thread rod is provided at the output end of the first servo motor. The ball screw nut pairs are provided at both ends of the forward and reverse thread rod, and each ball screw nut pair is connected to one of the sliding seats respectively.

3. The pressure testing device for automobile brake calipers according to claim 2, characterized in that: Each of the adjustable cross arms includes an arm body, a driving assembly and a sliding block. The arm body is installed on the sliding seat. The sliding block is slidably arranged on the arm body. The driving assembly is arranged inside the arm body. The output end of the driving assembly is connected to the sliding block. The adjusting arm is installed on the sliding block.

4. The pressure testing device for automobile brake calipers according to claim 3, characterized in that: Each of the driving components includes a second servo motor, a screw and a screw sleeve. The second servo motor is installed inside the arm body. The output end of the second servo motor is provided with the screw. The screw sleeve is provided on the screw, and the screw sleeve is connected to the corresponding sliding block.

5. The pressure testing device for automobile brake calipers according to claim 4, characterized in that: Each of the detection modules includes a detection block, two detection columns, a spring and a scale. The detection block is installed at the top of the adjusting arm. A detection channel is provided through the detection block. The detection columns are slidably provided at both ends of the detection channel. The spring is provided between the two detection columns. The scale is provided at the top of the detection block. A pointer is provided at one end of each detection column located inside the detection channel. The pointer extends to the outside of the detection block through a slide groove provided on the detection channel and corresponds to the scale.

6. The pressure testing device for automobile brake calipers according to claim 5, characterized in that: The pressure testing device for the automobile brake caliper also includes two protective plates. A through slot is provided through each sliding block, and the protective plate is installed at the through slot. The end of the protective plate is connected to the corresponding end of the arm body.

7. The pressure testing device for automobile brake calipers according to claim 6, characterized in that: Both sides of the end of each protective plate are provided with fixing blocks, and the fixing blocks are connected to the side walls of the corresponding end of the arm body.

8. The pressure testing device for automobile brake calipers according to claim 7, characterized in that: The inner bottom of each through slot is provided with a plurality of mounting holes, and a ball is arranged inside each mounting hole.

9. The pressure testing device for automobile brake calipers according to claim 8, characterized in that: An auxiliary support is provided at one end of the positive and negative threaded rod away from the first servo motor, one end of the auxiliary support is installed outside the positive and negative threaded rod, and the other end of the auxiliary support is connected to the mounting arm.

10. A pressure test system for automobile brake calipers, comprising the pressure test device for automobile brake calipers according to claim 9, characterized in that: It also includes a hydraulic source, the output end of which is connected to the input end of the hydraulic pump through an oil pipe.

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