An air tightness detection equipment for processing automobile brake oil pipe

Abstract

The application relates to the technical field of automobile part detection, in particular to air tightness detection equipment for automobile brake oil pipe machining, which comprises a frame body, an air compressor, an air chamber, a straightening mechanism and a clamping mechanism, the air compressor and the air chamber are both in sliding connection with the frame body, the straightening mechanism comprises a displacement assembly, a power assembly, a first bidirectional screw rod, a supporting seat and two supporting plates, the frame body is provided with two guide grooves, the two supporting plates are respectively in sliding connection with the corresponding guide grooves, the supporting seat is fixedly connected with the frame body, the first bidirectional screw rod is in rotary connection with the supporting seat, the two supporting plates are all in threaded connection with the bidirectional screw rod, and the displacement assembly is installed on the frame body, so that the technical problem that the brake oil pipe is detected in a curved state, pressure gradient or stress concentration phenomenon appears at the bending part, and if there is a tiny leakage point at the bending part, the leakage point is difficult to be found due to uneven pressure distribution is solved.

Description

Technical Field

[0001] This invention relates to the field of automotive parts testing technology, and in particular to an airtightness testing device for automotive brake hose processing. Background Technology

[0002] Among automotive parts, brake lines are an important component. They are also commonly referred to as brake hoses, brake lines, or brake hoses. They are a key component of the automotive braking system. The main function of brake lines is to transmit the braking medium during vehicle braking, ensuring that the braking force is transmitted to the brake shoes or brake calipers to generate braking force, thereby making the braking effective at all times. During the manufacturing process of automotive brake lines, in order to ensure packaging quality and prevent leaks, high-pressure leak testing devices are usually used to test them for leaks.

[0003] For example, a high-pressure side leakage detection device with a clamping structure for brake hoses disclosed in prior art patent application number CN202022125674.8 can be used. By setting up a hydraulic telescopic rod, a lifting plate, a pipe rack, a U-shaped connecting block, and a tapered pipe, the brake hose can be clamped and fixed through their cooperation. By setting up an air compressor and an air chamber, and setting air pressure gauges on the front of the air compressor and the air chamber respectively, the difference in readings of the air pressure gauges on the air compressor and the air chamber can be used to detect whether there is a leak in the brake hose connected in series, thereby achieving the purpose of detecting the brake hose.

[0004] However, in the above method, the brake line is tested while bent, which causes pressure gradients or stress concentration at the bend. As a result, if there is a tiny leak at the bend, it will be difficult to detect due to uneven pressure distribution. Summary of the Invention

[0005] The purpose of this invention is to provide an airtightness testing device for automotive brake hose processing, which aims to solve the technical problem that in the prior art, brake hoses are tested in a bent state, which leads to pressure gradients or stress concentration at the bend, making it difficult to detect small leaks at the bend due to uneven pressure distribution.

[0006] To achieve the above objectives, the present invention employs an airtightness testing device for automotive brake hose processing, comprising a frame, an air compressor, an air chamber, a straightening mechanism, and a clamping mechanism. The air compressor and the air chamber are slidably connected to the frame, and both the air compressor and the air chamber are provided with tapered tubes. The straightening mechanism includes a displacement component, a power component, a first bidirectional screw, a support base, and two support plates. The frame has two guide grooves, and the two support plates are slidably connected to their respective guide grooves. The support base is fixedly connected to the frame, and the first bidirectional screw is rotatably connected to the support base. Both support plates are threadedly engaged with the bidirectional screw. The displacement component is mounted on the frame and is used to drive the power component to move. The power component is used to drive the first bidirectional screw to rotate. The clamping mechanism is used to clamp the automotive brake hose to be tested.

[0007] The power assembly includes a first motor, a driving gear, and a first driven gear. The first motor is mounted on the displacement assembly, and the output end of the first motor is fixedly connected to the driving gear. The first driven gear is fixedly connected to the first bidirectional screw, and the first driven gear meshes with the driving gear.

[0008] The displacement assembly includes a cylinder and a mounting plate. The mounting plate is slidably connected to the frame. The first motor is mounted on the mounting plate, and the cylinder is mounted on the frame. The output end of the cylinder is fixedly connected to the mounting plate.

[0009] The clamping mechanism includes a drive assembly, two sliding plates, two movable clamping members, two fixed clamping members, and a telescopic rod. The support plate has a sliding groove, and the sliding plate is slidably connected to the corresponding sliding groove. The two ends of the telescopic rod are respectively fixedly connected to the corresponding sliding plate. The two movable clamping members are respectively fixedly connected to the corresponding sliding plate, and the two fixed clamping members are respectively fixedly connected to the corresponding support plate. The drive assembly is used to drive the corresponding movable clamping members to move.

[0010] The drive assembly includes a second motor, a disc, a support rod, and a connector. The connector is fixedly connected to the corresponding moving clamp and has a force-receiving groove. The second motor is mounted on the corresponding support plate and its output end is fixedly connected to the disc. One end of the support rod is fixedly connected to the disc, and the other end of the support rod is placed in the force-receiving groove.

[0011] The connecting member includes a connecting block and a force-bearing block. The two ends of the connecting block are fixedly connected to the corresponding moving clamping member and the force-bearing block, respectively. The force-bearing groove is provided on the force-bearing block.

[0012] The airtightness testing equipment for processing automotive brake lines further includes a transmission assembly, a pulley assembly, and a second bidirectional screw. The second bidirectional screw is rotatably connected to the frame, and both the second bidirectional screws are threadedly engaged with the air compressor and the air chamber. The transmission assembly is rotatably connected to the frame, and the pulley assembly is disposed between the transmission assembly and the first bidirectional screw.

[0013] The transmission assembly includes a second driven gear and a support rod. The support rod is rotatably connected to the frame, and the second driven gear is fixedly connected to the support rod.

[0014] The pulley assembly includes a driving pulley, a driven pulley, and a transmission belt. The driving pulley and the driven pulley are fixedly connected to the support rod and the second bidirectional screw, respectively, and the transmission belt is disposed between the driving pulley and the driven pulley.

[0015] This invention discloses an airtightness testing device for automotive brake hose processing. In practical use, the brake hose to be tested is first clamped by the clamping mechanism. Then, the power assembly drives the first bidirectional screw to rotate. The first bidirectional screw drives two support plates to slide in corresponding guide grooves. The two support plates straighten the brake hose to be tested. Then, the air compressor and the air chamber are pushed, so that two tapered tubes are connected to the two ends of the brake hose. Subsequently, the air compressor supplies air, and the difference in readings of the air pressure gauges on the air compressor and the air chamber is used to detect whether there is a leak in the brake hose connected in series. This achieves the purpose of testing the brake hose. This method solves the technical problem in the prior art where the brake hose is tested in a bent state, which leads to pressure gradients or stress concentration at the bend, making it difficult to detect small leaks at the bend due to uneven pressure distribution. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention.

[0018] Figure 2 This is a front view of the first embodiment of the present invention.

[0019] Figure 3 This is the invention Figure 1 Enlarged view of the local structure at point A.

[0020] Figure 4 This is the invention Figure 2 BB line structural cross-sectional view.

[0021] Figure 5 This is a schematic diagram of the structure of the second embodiment of the present invention.

[0022] Figure 6 This is a structural schematic diagram of the third embodiment of the present invention.

[0023] 101-Frame, 102-Air compressor, 103-Air chamber, 104-First bidirectional screw, 105-Support base, 106-Support plate, 107-First motor, 108-Driving gear, 109-First driven gear, 110-Cylinder, 111-Mounting plate, 112-Slide plate, 113-Moving clamping component, 114-Fixed clamping component, 115-Telescopic rod, 116-Second motor, 117-Disc, 11 8-Holding rod, 119-Connecting block, 120-Force-bearing block, 121-Guide groove, 122-Slide groove, 123-Force-bearing groove, 124-Conical tube, 125-Pressure gauge, 201-Second bidirectional screw, 202-Second driven gear, 203-Support rod, 204-Driving wheel, 205-Driven wheel, 206-Transmission belt, 301-Electric cylinder, 302-Tensioning wheel, 303-Slider, 304-Mounting rod. Detailed Implementation

[0024] The embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, but should not be construed as limiting the present invention.

[0025] The first embodiment of this application is as follows: Please see Figures 1-4 ,in Figure 1 This is a structural schematic diagram of the first embodiment of the present invention. Figure 2 This is a front view of the first embodiment of the present invention. Figure 3 This is the invention Figure 1 Enlarged view of the local structure at point A. Figure 4 This is the invention Figure 2 BB line structural cross-sectional view.

[0026] This invention provides an airtightness testing device for automotive brake pipe processing, comprising a frame 101, an air compressor 102, an air chamber 103, a straightening mechanism, and a clamping mechanism. The straightening mechanism includes a displacement component, a power component, a first bidirectional screw 104, a support base 105, and two support plates 106. The power component includes a first motor 107, a drive gear 108, and a first driven gear 109. The displacement component includes a cylinder 110 and a mounting plate 111. The clamping mechanism includes a drive component and two sliding plates 106. 12. Two movable clamping parts 113, two fixed clamping parts 114 and a telescopic rod 115. The drive assembly includes a second motor 116, a disc 117, a support rod 118 and a connector. The connector includes a connecting block 119 and a force-bearing block 120. The aforementioned solution solves the technical problem in the prior art where the brake oil pipe is tested in a bent state, which leads to pressure gradients or stress concentration at the bend, making it difficult to detect small leaks at the bend due to uneven pressure distribution.

[0027] In this specific embodiment, both the air compressor 102 and the air chamber 103 are slidably connected to the frame 101. Both the air compressor 102 and the air chamber 103 are provided with tapered tubes 124. The difference in readings of the pressure gauges on the air compressor 102 and the air chamber 103 is used to detect whether there is a leak in the brake oil pipe connected in series with them.

[0028] The frame 101 has two guide grooves 121, and two support plates 106 are slidably connected to the corresponding guide grooves 121. The support base 105 is fixedly connected to the frame 101, and the first bidirectional screw 104 is rotatably connected to the support base 105. Both support plates 106 are threadedly engaged with the bidirectional screw. The displacement assembly is mounted on the frame 101 and is used to drive the power assembly to move. The power assembly is used to drive the first bidirectional screw 104 to rotate. The clamping mechanism is used to clamp the automotive brake hose to be tested. In specific use, the clamping mechanism first clamps the automotive brake hose to be tested, and then the power assembly drives the first bidirectional screw 104 to rotate. The first bidirectional screw 104 carries... The two support plates 106 slide within their respective guide grooves 121, straightening the brake hose to be tested. This then pushes the air compressor 102 and the air chamber 103, connecting the two tapered tubes 124 to both ends of the brake hose. The air compressor 102 then supplies air, and the difference in pressure readings between the air compressor 102 and the air chamber 103 is used to detect leaks in the connected brake hose. This achieves the purpose of inspecting the brake hose, solving the technical problem in the prior art where the brake hose is inspected while bent, leading to pressure gradients or stress concentrations at the bend, making it difficult to detect even minor leaks due to uneven pressure distribution.

[0029] Secondly, the first motor 107 is mounted on the displacement assembly. The output end of the first motor 107 is fixedly connected to the driving gear 108, and the first driven gear 109 is fixedly connected to the first bidirectional screw 104. The first driven gear 109 meshes with the driving gear 108. By starting the first motor 107, the output end of the first motor 107 drives the driving gear 108 to rotate. The driving gear 108 drives the first driven gear 109, which in turn drives the first bidirectional screw 104 to rotate.

[0030] Meanwhile, the mounting plate 111 is slidably connected to the frame 101, the first motor 107 is mounted on the mounting plate 111, the cylinder 110 is mounted on the frame 101, and the output end of the cylinder 110 is fixedly connected to the mounting plate 111. In actual use, the cylinder 110 is started, and the output end of the cylinder 110 drives the mounting plate 111 to move. The mounting plate 111 drives the first motor 107 to move, thereby causing the driving gear 108 to mesh with the first driven gear 109.

[0031] In addition, the support plate 106 has a sliding groove 122, the slide plate 112 is slidably connected to the corresponding sliding groove 122, the two ends of the telescopic rod 115 are respectively fixedly connected to the corresponding slide plate 112, the two moving clamping members 113 are respectively fixedly connected to the corresponding slide plate 112, and the two fixed clamping members 114 are respectively fixedly connected to the corresponding support plate 106. The drive assembly is used to drive the corresponding moving clamping member 113 to move. By placing the two ends of the car brake oil pipe on the corresponding fixed clamping member 114, the drive assembly is activated. The drive assembly drives the corresponding moving clamping member 113 to move down, and drives the other slide plate 112 to move down through the telescopic rod 115, so that the two moving clamping members 113 and the two fixed clamping members 114 cooperate to clamp and fix the car brake oil pipe.

[0032] Furthermore, the connecting member is fixedly connected to the corresponding moving clamping member 113. The connecting member has a force-receiving groove 123. The second motor 116 is mounted on the corresponding support plate 106. The output end of the second motor 116 is fixedly connected to the disc 117. One end of the abutment rod 118 is fixedly connected to the disc 117, and the other end of the abutment rod 118 is placed in the force-receiving groove 123. The two ends of the connecting block 119 are fixedly connected to the corresponding moving clamp 113 and the force-receiving block 120 respectively, and the force-receiving groove 123 is provided on the force-receiving block 120; By starting the second motor 116, the output end of the second motor 116 drives the disk 117 to rotate. The disk 117 drives the abutment rod 118 to slide in the force groove 123, thereby driving the force block 120 to move. The force block 120 drives the connecting block 119 to move, which in turn drives the corresponding moving clamp 113 to move.

[0033] In the application of the airtightness testing equipment for automotive brake hose processing according to this embodiment, the brake hose to be tested is first clamped by the clamping mechanism. Then, the first bidirectional screw 104 is rotated by the power component. The first bidirectional screw 104 drives the two support plates 106 to slide in the corresponding guide grooves 121. The two support plates 106 straighten the brake hose to be tested. Then, the air compressor 102 and the air chamber 103 are pushed, so that the two tapered tubes 124 are connected to the two ends of the brake hose. Subsequently, the air compressor 102 supplies air, and the difference in readings of the air pressure gauges on the air compressor 102 and the air chamber 103 is used to detect whether there is a leak in the brake hose connected in series. This achieves the purpose of testing the brake hose. This method solves the technical problem in the prior art where the brake hose is tested in a bent state, which leads to pressure gradients or stress concentration at the bend, making it difficult to detect small leaks at the bend due to uneven pressure distribution.

[0034] The second embodiment of this application is as follows: Based on the first embodiment, please refer to Figure 5 , Figure 5 This is a schematic diagram of the structure of the second embodiment of the present invention.

[0035] The present invention provides an airtightness testing device for processing automotive brake lines, which also includes a transmission assembly, a pulley assembly and a second bidirectional screw 201. The transmission assembly includes a second driven gear 202 and a support rod 203. The pulley assembly includes a driving pulley 204, a driven pulley 205 and a transmission belt 206.

[0036] In this specific embodiment, the second bidirectional screw 201 is rotatably connected to the frame 101, and the second bidirectional screw 201 is threadedly engaged with the air compressor 102 and the air chamber 103. The transmission assembly is rotatably connected to the frame 101, and the pulley assembly is disposed between the transmission assembly and the first bidirectional screw 104. The support rod 203 is rotatably connected to the frame 101, and the second driven gear 202 is fixedly connected to the support rod 203; After the car brake line is straightened, the output end of the cylinder 110 drives the mounting plate 111 to move, which in turn drives the drive gear 108 to mesh with the second driven gear 202. The first motor 107 drives the drive gear 108 to rotate, which in turn drives the second transmission gear to rotate. The second transmission gear drives the support rod 203 to rotate, which in turn drives the second bidirectional screw 201 to rotate through the pulley assembly. The second bidirectional screw 201 drives the air compressor 102 and the air compressor chamber to move towards each other, which drives the two tapered tubes 124 to connect to both ends of the brake line.

[0037] The driving wheel 204 and the driven wheel 205 are fixedly connected to the support rod 203 and the second bidirectional screw 201, respectively. The transmission belt 206 is disposed between the driving wheel and the driven wheel 205. When the support rod 203 rotates, it drives the driving wheel 204 to rotate. The driving wheel 204 drives the driven wheel 205 to rotate through the transmission belt 206, which in turn drives the second bidirectional screw 201 to rotate.

[0038] Using the air tightness testing equipment for processing automotive brake lines according to this embodiment, after the automotive brake lines are straightened, the output end of the cylinder 110 drives the mounting plate 111 to move, thereby driving the drive gear 108 to mesh with the second driven gear 202. The first motor 107 drives the drive gear 108 to rotate, which in turn drives the second transmission gear to rotate. The second transmission gear drives the support rod 203 to rotate, which in turn drives the second bidirectional screw 201 to rotate through the pulley assembly. The second bidirectional screw 201 drives the air compressor 102 and the air compressor chamber to move towards each other, driving the two tapered tubes 124 to connect to both ends of the brake lines.

[0039] The third embodiment of this application is as follows: Based on the second embodiment, please refer to Figure 6 , Figure 6 This is a structural schematic diagram of the third embodiment of the present invention.

[0040] The present invention provides an airtightness testing device for processing automotive brake lines, which also includes an electric cylinder 301, a sliding member and a tensioning wheel 302, wherein the sliding member includes a slider 303 and a mounting rod 304.

[0041] In this specific embodiment, the sliding member is slidably connected to the frame 101, the electric cylinder 301 is mounted on the frame 101, the output end of the motor is fixedly connected to the sliding member, the tension wheel 302 is disposed on the sliding member, and the tension wheel 302 is in contact with the transmission belt 206. By activating the electric cylinder 301, the output end of the electric cylinder 301 drives the sliding member to move, and the sliding member in turn drives the tension wheel 302 to move, thereby adjusting the tension of the transmission belt 206.

[0042] The slider 303 is slidably connected to the frame 101, the mounting rod 304 is rotatably connected to the slider 303, the mounting rod 304 is fixedly connected to the tension wheel 302, the output end of the electric cylinder 301 drives the slider 303 to move, and the slider 303 drives the mounting rod 304 to move.

[0043] Using the airtightness testing equipment for processing automotive brake lines according to this embodiment, by activating the electric cylinder 301, the output end of the electric cylinder 301 drives the sliding member to move, and the sliding member in turn drives the tensioning wheel 302 to move, thereby adjusting the tension of the transmission belt 206.

[0044] The above description discloses only one preferred embodiment of the present invention, and should not be construed as limiting the scope of the present invention. Those skilled in the art will understand that all or part of the processes of the above embodiments can be implemented, and equivalent changes made in accordance with the claims of the present invention are still within the scope of the invention.

Claims

1. An airtightness testing device for processing automotive brake lines, comprising a frame, an air compressor, and an air chamber, wherein the air compressor and the air chamber are slidably connected to the frame, and both the air compressor and the air chamber are provided with tapered tubes, characterized in that, It also includes a straightening mechanism and a clamping mechanism; The straightening mechanism includes a displacement component, a power component, a first bidirectional screw, a support base, and two support plates. The frame has two guide grooves, and the two support plates are slidably connected to the corresponding guide grooves. The support base is fixedly connected to the frame, and the first bidirectional screw is rotatably connected to the support base. Both support plates are threadedly engaged with the bidirectional screw. The displacement component is mounted on the frame and is used to drive the power component to move. The power component is used to drive the first bidirectional screw to rotate. The clamping mechanism is used to clamp the automotive brake hose to be tested.

2. The airtightness testing equipment for automotive brake hose processing as described in claim 1, characterized in that, The power assembly includes a first motor, a driving gear, and a first driven gear. The first motor is mounted on the displacement assembly, and the output end of the first motor is fixedly connected to the driving gear. The first driven gear is fixedly connected to the first bidirectional screw, and the first driven gear meshes with the driving gear.

3. The airtightness testing equipment for automotive brake hose processing as described in claim 2, characterized in that, The displacement assembly includes a cylinder and a mounting plate. The mounting plate is slidably connected to the frame. The first motor is mounted on the mounting plate, and the cylinder is mounted on the frame. The output end of the cylinder is fixedly connected to the mounting plate.

4. The airtightness testing equipment for automotive brake hose processing as described in claim 3, characterized in that, The clamping mechanism includes a drive assembly, two sliding plates, two movable clamping members, two fixed clamping members, and a telescopic rod. The support plate has a sliding groove, and the sliding plate is slidably connected to the corresponding sliding groove. The two ends of the telescopic rod are respectively fixedly connected to the corresponding sliding plate. The two movable clamping members are respectively fixedly connected to the corresponding sliding plate, and the two fixed clamping members are respectively fixedly connected to the corresponding support plate. The drive assembly is used to drive the corresponding movable clamping members to move.

5. The airtightness testing equipment for automotive brake hose processing as described in claim 4, characterized in that, The drive assembly includes a second motor, a disc, a support rod, and a connector. The connector is fixedly connected to the corresponding moving clamp and has a force-receiving groove. The second motor is mounted on the corresponding support plate and its output end is fixedly connected to the disc. One end of the support rod is fixedly connected to the disc, and the other end of the support rod is placed in the force-receiving groove.

6. The airtightness testing equipment for automotive brake hose processing as described in claim 5, characterized in that, The connector includes a connecting block and a force-bearing block. The two ends of the connecting block are fixedly connected to the corresponding moving clamp and the force-bearing block, respectively. The force-bearing groove is provided on the force-bearing block.

7. The airtightness testing equipment for automotive brake hose processing as described in claim 6, characterized in that, The air tightness testing equipment for processing automotive brake lines further includes a transmission assembly, a pulley assembly, and a second bidirectional screw. The second bidirectional screw is rotatably connected to the frame, and both the second bidirectional screws are threadedly engaged with the air compressor and the air chamber. The transmission assembly is rotatably connected to the frame, and the pulley assembly is disposed between the transmission assembly and the first bidirectional screw.

8. The airtightness testing equipment for automotive brake hose processing as described in claim 7, characterized in that, The transmission assembly includes a second driven gear and a support rod, the support rod being rotatably connected to the frame, and the second driven gear being fixedly connected to the support rod.

9. The airtightness testing equipment for automotive brake hose processing as described in claim 8, characterized in that, The pulley assembly includes a driving pulley, a driven pulley, and a transmission belt. The driving pulley and the driven pulley are fixedly connected to the support rod and the second bidirectional screw, respectively, and the transmission belt is disposed between the driving pulley and the driven pulley.

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