Air pressure sealing test device for automotive brake

Abstract

An automobile brake air pressure sealing test device belongs to the technical field of test equipment and comprises a bottom plate, a fixed table, a simulation brake disc, an air compressor, a pressure sensor, a detection tube, a PLC, a pneumatic tightening gun, an air cylinder, a linear sliding table, a detection tube, an electromagnetic valve and a floating mechanism. The fixing table, the simulation brake disc, the air compressor, the pressure sensor, the detection pipe, the PLC, the pneumatic tightening gun, the air cylinder, the linear sliding table, the detection pipe, the electromagnetic valve, the floating mechanism and the bottom plate are installed together. The brake can be automatically fixed and disassembled through the electric tightening gun, the oil return end seat of the brake can be automatically blocked, compressed air is input into the brake shell through the oil inlet end seat, and the sealing performance of the oil return end seat and the oil inlet end seat can be kept all the time when the caliper clamps the upper end of the simulated brake disc and the upper end of the brake shell to perform relative transverse displacement. In the whole detection process, only detection personnel need to take and place the brake, so that convenience is brought to the detection personnel, and the detection efficiency is correspondingly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to detection equipment technical field, especially a kind of automobile brake air pressure seal test device. BACKGROUND

[0002] Automobile brake is a very important safety component on vehicle, when working, after driver steps on brake pedal, hydraulic oil enters its inside via oil inlet hole, brake's piston pushes brake pad (caliper) movement clamping vehicle brake disc, and then wheel stops movement (the oil inlet pipe base and oil return pipe base of automobile brake are respectively located at the upper end of its shell two sides, oil inlet pipe base and the outlet pipe of hydraulic oil pump are connected via pipeline, oil return pipe base and the return pipe of hydraulic oil pump are connected via pipeline). In actual situation, when the sealing performance of relevant components in brake shell and oil inlet pipe base, oil return pipe base is not good, it will have great influence on braking performance, directly related to the driving safety of vehicle, therefore, brake manufacturer and relevant manufacturers need to detect its sealing performance after production.

[0003] In prior art, for the sealing performance detection mechanism of brake, it generally includes fixed table, simulated brake disc, air compressor, pressure sensor, detection pipe, etc., when detecting, detection personnel install brake on fixed table (the right side end of brake is installed on the side end of fixed table via bolt, and the caliper of brake is located at the two side ends of simulated brake disc), then seal brake's oil return pipe base via screw plug, and screw the rear end of detection pipe into oil inlet pipe base via thread, then open the valve of air compressor, after compressed air enters brake shell, close the valve, after a period of time, detection personnel obtain the sealing performance data of brake by observing the pressure data of pressure sensor in mutual communication between air inlet pipe and detection pipe (the lower the pressure, the worse the sealing performance of brake, on the contrary, the better the sealing performance). Although the sealing performance detection mechanism of existing brake meets the needs of detection work to some extent, since brake, screw plug, detection pipe and the like need to be fixed and removed by detection personnel one by one manually, it brings inconvenience to detection personnel, and the relative detection efficiency is relatively low. UTILITY MODEL CONTENTS

[0004] In order to overcome the drawbacks of existing sealing performance detection mechanism of brake due to structure limitation, the utility model provides a kind of automobile brake air pressure seal test device, under the joint action of relevant mechanism, after detection personnel place brake on fixed table, it can automatically complete the fixation and removal of brake, and can automatically seal the oil return end base of brake, input compressed air into brake shell via oil inlet end base, and can always maintain the sealing performance of oil return end base and oil inlet end base when caliper clamps simulated brake disc and the upper end of brake shell moves relatively horizontally, thereby bringing convenience to detection personnel, and accordingly improving detection efficiency.

[0005] The utility model discloses a technical scheme that solves its technical problems is:

[0006] A kind of automobile brake air pressure sealing test device, including bottom plate, fixed platform, simulation brake disc, air compressor, pressure sensor, detection pipe, PLC, pneumatic tightening gun, cylinder, linear slide table, solenoid valve, still have floating mechanism;The fixed platform is fixedly installed at bottom plate front end, simulation brake disc lower end is installed at fixed platform one side end, the cylinder body of pneumatic tightening gun is fixedly installed on fixed plate, fixed plate lower end is installed on the sliding block of linear slide table, the lower end of linear slide table is fixedly installed on the other side end of fixed platform, the cylinder body of cylinder is installed on the side end of linear slide table, the piston rod of cylinder and fixed plate side end are installed together;The floating mechanism includes rear support seat, cylinder A, linear slide table A, cylinder B, connecting plate, mounting plate, rear support seat lower end is installed at bottom plate rear side end, connecting plate rear side end is installed on rear support seat upper end, the cylinder body of cylinder A is installed on connecting plate side end, the piston rod side end of cylinder A and the cylinder body side end of cylinder B are fixedly installed together, linear slide table A is fixedly installed on connecting plate front side end, the cylinder body rear side end of cylinder B is fixedly installed on the sliding block front portion of linear slide table A;The upper end of mounting plate is fixedly installed on the piston rod lower end of cylinder B, the lower end of mounting plate one side is provided with plug, the lower end of mounting plate other side is provided with contact pipe, detection pipe is installed at rear support station outer side end, one end of detection pipe and the upper end of contact pipe are connected together through hose, the other end of detection pipe and one end of solenoid valve are connected, the other end of solenoid valve and the gas holder of air compressor are connected through pipeline, the inlet pipe of pressure sensor and detection pipe outside are fixedly installed together.

[0007] Further, the solenoid valve is a normally closed valve core solenoid valve.

[0008] Further, the side end of the fixed platform has a tap hole.

[0009] Further, the plug and the lower end of the contact pipe are both provided with a gasket, and the lower side ends of the plug and the contact pipe are in the same plane.

[0010] Further, the distance between the plug and the contact pipe is consistent with the distance between the oil return end seat and the oil inlet end seat of the brake, and the inner diameters of the oil return end seat and the oil inlet end seat are smaller than the outer diameters of the plug and the contact pipe.

[0011] Compared with the prior art, the utility model has the beneficial effects that under the joint action of the related mechanism, the detection personnel can automatically complete the fixing and dismounting of the brake through the electric tightening gun after putting the brake on the fixing table and pressing the control button of PLC, and can automatically seal the oil return end seat of the brake, input compressed air into the brake shell through the oil inlet end seat, and always maintain the sealing property of the oil return end seat and the oil inlet end seat when the caliper clamps the simulated brake disc and the shell of the brake moves relatively in the horizontal direction, thereby bringing convenience to the detection personnel and improving the detection efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model will be further explained in connection with the drawings and examples.

[0013] Figure 1 It is the three-dimensional structure schematic diagram between the utility model and the brake.

[0014] Figure 2 It is the local structure schematic diagram of the utility model. CONCRETE EMBODIMENT

[0015] Figure 1 、 2The utility model discloses a kind of automobile brake air pressure sealing test devices, including bottom plate 1, fixed platform 2, simulation brake disc 3, air compressor (not shown in drawing), pressure sensor (not shown in drawing), detection pipe (not shown in drawing), PLC (not shown in drawing), pneumatic tightening gun 4, cylinder 5, linear slide 6, solenoid valve (not shown in drawing), also have floating mechanism 7;Fixed platform 2 is fixedly installed in the middle of bottom plate 1 front end, simulation brake disc 3 lower end is fixedly installed on the bottom plate 1 of fixed platform 1 left side end, pneumatic tightening gun 4 at least has two sets, the lower part of the cylinder of two sets of pneumatic tightening gun 4 is installed on a fixed plate 8 with a certain distance interval, fixed plate 8 lower end is fixedly installed with a certain distance interval on the sliding block of two sets of linear slide 6 respectively, the lower end of two sets of linear slide 6 is fixedly installed with a certain distance interval on the bottom plate 1 of fixed platform right side end respectively, the lower end of the cylinder of cylinder 5 is transversely installed on the upper right side end of front-end linear slide 6, the left side end of the piston rod of cylinder 5 and the right side end of fixed plate 8 are fixedly installed together;The floating mechanism 7 includes rear support seat 71, cylinder A 72, linear slide A 73, cylinder B 74, connecting plate 75, mounting plate 76, rear support seat 71 lower end is welded on the middle of bottom plate 1 rear side end, connecting plate 75 rear side end is fixedly installed on rear support seat 71 front upper end, connecting plate 75 left side end is "┌" type structure, connecting plate 75 middle has an opening, the cylinder right side of cylinder A 72 is fixedly installed on the left side end of connecting plate 75 and the piston rod of cylinder A 72 is located in the opening (the inner diameter of opening is greater than the outer diameter of piston rod), linear slide A 73 has two sets, the upper and lower ends of the rear side end of two sets of linear slide A 73 are fixedly installed with a certain distance interval on the upper and lower parts of connecting plate 75 front side end respectively, the cylinder rear side end of cylinder B 74 is fixedly installed on the sliding block front part of two sets of linear slide A 73 respectively, the right side end of the piston rod of cylinder A 73 and the left side end of the cylinder of cylinder B 74 are fixedly installed together;The upper end rear side of mounting plate 76 is fixedly installed on the lower side end of the piston rod of cylinder B 74, one cylindrical plug 77 is installed on the left front lower end of mounting plate, the right front lower end of mounting plate 76 has an opening, one contact pipe 78 is welded in the opening, detection pipe is installed on the rear outer side end of rear support seat 71, one end of detection pipe and the upper end of contact pipe 78 are connected together through high-strength rubber tube, the other end of detection pipe 78 and one end of solenoid valve are connected through screw thread, the other end of solenoid valve and the gas tank exhaust pipe of air compressor are connected through pipeline.The PLC is installed in the electric control box, the power input end of the PLC and the two poles of the AC 220V power source are connected through wires respectively, the 11-way power output end of the PLC and the inlet and outlet electromagnetic valves of the cylinder body upper and lower parts of the cylinder 5, the cylinder A72 and the cylinder B74, and the two sets of inlet and outlet electromagnetic valves of the cylinder body of the two sets of electric tightening guns 4 are connected through wires respectively, the inlet and outlet electromagnetic valves of the cylinder body upper and lower parts of the cylinder 5, the cylinder A72 and the cylinder B74, and the two sets of inlet and outlet electromagnetic valves of the cylinder body of the two sets of electric tightening guns and the air tank exhaust pipe of the compressed air are connected through hoses in parallel respectively, and the inlet pipe and the middle outer side end of the detection pipe of the pressure sensor are fixed and installed together and communicate with each other.

[0016] Figure 1 、 2 As shown in the figure, the electromagnetic valve is a normally closed valve core electromagnetic valve. The right side of the fixed table 2 has two fixed wire holes with a front and back interval distance, and the interval distance of the two wire holes is consistent with the interval distance of the fixed hole of the right side of the brake 10. The side end of the cylindrical plug 77 is glued with a sealing rubber pad (sealing effect), and the lower end of the contact pipe 78 is glued with a ring-shaped hollow sealing rubber pad A (sealing effect), and the lower side end of the plug 77 and the contact pipe 78 is in the same plane. The interval distance between the plug 77 and the contact pipe 78 is consistent with the interval distance between the oil return end seat and the oil inlet end seat of the brake, and the inner diameter of the oil return end seat and the oil inlet end seat is smaller than the outer diameter of the plug and the contact pipe. The left end sleeve of the two sets of pneumatic tightening guns is respectively welded with a fixed bolt.

[0017] Figure 1 、 2The new workflow is shown as follows. (1) The tester puts the brake 10 on the fixed table 2 (the calipers of the brake are located at both sides of the brake disc), presses the control button of the PLC, and then the PLC controls the cylinder body rear end of the cylinder 5 to work for a period of time. The piston rod of the cylinder pushes the two sets of pneumatic tightening guns 4 to move a distance towards the left end. The left end of the two sets of pneumatic tightening guns 4 is bolted to the fixed hole at the right end of the brake 10 (at the same time, the PLC controls one of the two sets of pneumatic tightening guns 4 to work for a period of time. The sleeve of the electric tightening gun rotates clockwise, and the bolt is screwed into the fixed table thread seat, fixing the brake on the fixed table). (2) The PLC controls the left or right end of the cylinder A72 to work for a period of time. The piston rod of the cylinder A72 drives the cylinder B74 and the plug and contact tube to move a distance left or right, so that the lower end of the plug and contact tube 78 can be vertically located on the upper end of the oil return end seat and the oil inlet end seat of the brake, respectively (after the tester adjusts the position of the cylinder A72 for the first time, the subsequent detection PLC can skip this step). (3) The PLC controls the cylinder B74 to work for a period of time. The piston rod of the cylinder B74 drives the plug 77 and the contact tube 78 to move a distance downwards, so that the lower end of the plug and the contact tube 78 (gas enters the brake through the contact tube 78) can tightly contact the upper end of the oil return end seat and the oil inlet end seat of the brake 10, respectively. (4) The PLC controls the electromagnetic valve to work for a period of time, and then controls the electromagnetic valve to lose power. The compressed air output by the air compressor enters the inside of the brake 10 to detect its sealing performance (within a period of time, if the pressure reading of the pressure sensor does not decrease, it means that there is no air leakage in the brake, and the quality is good, otherwise the quality is poor). In actual situation, the automatic plugging of the oil return end seat through the oil inlet end seat of the brake shell inputs compressed air into the brake shell. The upper end of the brake shell (including the oil return end seat and the oil inlet end seat) will displace horizontally relative to the caliper, because the two air inlet and exhaust electromagnetic valves of the cylinder A72 are not powered, and the cylinder B is installed at the front side of the linear slide A73, so that the lower end of the plug 77 and the contact tube 78 can displace synchronously and tightly contact the upper end of the oil return end seat and the oil inlet end seat of the brake 10, respectively, and the pressure detection effect is more real and reliable.(5) after the detection is completed, the detection personnel press the control button of the PLC again, and the other air inlet and exhaust electromagnetic valve of the two sets of pneumatic tightening guns 4 controlled by the PLC is powered on for a period of time, the sleeve of the electric tightening gun rotates counterclockwise, the bolt gradually rotates out of the fixed table thread seat, and the brake is no longer fixed on the fixed table (at the same time, the cylinder body front end air inlet and exhaust electromagnetic valve of the PLC controlled cylinder 5 is powered on for a period of time, the piston rod of the cylinder moves the two sets of pneumatic tightening guns 4 towards the rear end by a distance, the left end bolt of the two sets of pneumatic tightening guns 4 and the fixing hole on the right end of the brake 10 are separated; (6) the cylinder body lower end air inlet and exhaust electromagnetic valve of the PLC controlled cylinder B74 is powered on for a period of time, the piston rod of the cylinder B74 drives the plug 77 and the contact pipe 78 to move upwards by a distance, so that the lower end of the plug and the contact pipe 78 and the upper end of the oil return end seat and the oil inlet end seat of the brake 10 are separated, so that the detection personnel can take down the detected brake. Through the above, the present application brings convenience to the detection personnel in the whole detection process, and the detection efficiency is improved.

[0018] It is apparent for those skilled in the art that the present application is not limited to the details of the above-described exemplary embodiments, and the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Accordingly, the embodiments should be considered in a descriptive sense only, and not for purposes of limitation. The scope of the present application is defined by the appended claims rather than the foregoing description, and it is intended that all changes and modifications that come within the meaning and range of equivalents of the claims are embraced therein. Any reference numerals in the claims should not be construed as limiting the scope of the claims to the specific embodiments to which the reference numerals are attached.

[0019] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. An automobile brake air pressure sealing test device, comprising a base plate, a fixed table, a simulated brake disc, an air compressor, a pressure sensor, a detection tube, a PLC, a pneumatic tightening gun, a pneumatic cylinder, a linear slide, a solenoid valve, characterized in that, It also has a floating mechanism; the fixed table is fixedly installed at the front end of the bottom plate, the lower end of the simulated brake disc is installed at one side end of the fixed table, the cylinder body of the pneumatic tightening gun is fixedly installed on the fixed plate, the lower end of the fixed plate is installed on the sliding block of the linear slide table, the lower end of the linear slide table is fixedly installed on the other side end of the fixed table, the cylinder body of the pneumatic cylinder is installed at the side end of the linear slide table, the piston rod of the pneumatic cylinder is installed together with the side end of the fixed plate; the floating mechanism comprises a rear support seat, a pneumatic cylinder A, a linear slide table A, a pneumatic cylinder B, a connecting plate and a mounting plate, the rear support seat is installed at the rear side end of the bottom plate, the connecting plate is installed at the upper end of the rear support seat, the cylinder body of the pneumatic cylinder A is installed at the side end of the connecting plate, the side end of the piston rod of the pneumatic cylinder A and the cylinder body of the pneumatic cylinder B are fixedly installed together, the linear slide table A is fixedly installed at the front side end of the connecting plate, the cylinder body of the pneumatic cylinder B is fixedly installed at the front part of the sliding block of the linear slide table A; the upper end of the mounting plate is fixedly installed at the lower end of the piston rod of the pneumatic cylinder B, a plug is installed at one side of the lower end of the mounting plate, a contact pipe is installed at the other side of the lower end of the mounting plate, a detection pipe is installed at the outer side end of the rear support table, one end of the detection pipe and the upper end of the contact pipe are connected together through a hose, the other end of the detection pipe and one end of an electromagnetic valve are connected, the other end of the electromagnetic valve and a gas storage tank of an air compressor are connected through a pipeline, and an air inlet pipe of a pressure sensor is fixedly installed together with the outer side of the detection pipe.

2. The automobile brake air pressure sealing test device according to claim 1, wherein The electromagnetic valve is a normally closed valve core electromagnetic valve.

3. The automobile brake air pressure sealing test device according to claim 1, wherein The side end of the fixed table has a wire hole.

4. The automobile brake air pressure sealing test device according to claim 1, wherein The plug and the contact pipe are both installed with sealing pads, and the lower side ends of the plug and the contact pipe are in the same plane.

5. The device for testing the air pressure seal of an automobile brake according to claim 1, wherein The spacing between the plug and the contact pipe is consistent with the spacing between the oil return end seat and the oil inlet end seat of the brake, and the inner diameters of the oil return end seat and the oil inlet end seat are smaller than the outer diameters of the plug and the contact pipe.

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