Automobile hydraulic brake detector

Abstract

The utility model discloses an automobile hydraulic brake detector, comprising a test cylinder, two sides in the test cylinder are provided with circular cavities distributed along the length direction of the test cylinder, the bottom of the test cylinder is fixedly provided with an oil collection cabin, the upper part of the oil collection cabin is respectively communicated with the bottoms of the two circular cavities, and the bottom of the oil collection cabin is provided with an oil pipe joint. A top plate is fixedly installed at the top of the testing cylinder, hydraulic dampers extending into the two circular cavities are fixed to the two sides of the bottom of the top plate respectively, pistons matched with the circular cavities are connected to the output shaft ends of the bottoms of the hydraulic dampers, and electronic pressure gauges corresponding to the two hydraulic dampers respectively are further arranged at the upper end of the top plate; a detection displayer is electrically connected to the leading-out position away from the electronic pressure gauge, the hydraulic dampers are led into the circular cavities in the two sides through the oil injection hole and the oil inlet hole respectively, the pressures of the circular cavities in the two sides are equal, and therefore the top pressures borne by the hydraulic dampers on the two sides are also the same, the average value can be calculated after the detection end obtains data, and detection is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of automobile hydraulic brake detection, in particular to an automobile hydraulic brake detector. Background Art

[0002] Hydraulic brakes are mechanical parts that stop or slow down the moving parts of a machine. Currently, most automobile brakes are completed by hydraulic brakes. In the prior art, the location of automobile hydraulic failure is generally determined by the experience of automobile drivers and maintenance personnel. Automobile hydraulic brakes include the master cylinder and each sub-cylinder pipeline, etc., which have a large range. Sometimes it is not easy to judge where the failure occurs.

[0003] The patent document with the announcement number CN2304117Y discloses a vehicle hydraulic brake detector, which removes the oil pipe of the hydraulic brake part to be tested, selects a suitable connector according to the vehicle model, and the thread of one end of the connector must be the same as the thread of the oil pipe. If the pointer of the test meter slowly drops, it indicates that the hydraulic brake part has a fault and needs to be disassembled for repair. It avoids unnecessary losses in labor hours, materials, etc. caused by misjudgment based on experience.

[0004] The above-mentioned device and technical solution still have some shortcomings in use. For example, the exhaust screw on the exhaust joint is actually connected to the hose and the hydraulic oil circuit. During the process of twisting and deflation of the exhaust screw, especially in the latter stage of deflation, it is difficult to ensure that the oil in the pipeline will not overflow from the exhaust screw interface, and repeated operation and display are also troublesome, which brings inconvenience to the detection operation. Therefore, there is a need for a detection device with a simple structure, easy operation, and effective detection of hydraulic brake faults. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] Therefore, the purpose of the present invention is to provide an automobile hydraulic brake detector to solve the problem in the above background technology that a detection device with a simple structure, easy operation and capable of effectively detecting hydraulic brake faults is needed.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an automobile hydraulic brake detector, which includes a test cylinder, the test cylinder has circular cavities on both sides thereof and arranged along its length direction, an oil collecting tank is fixed to the bottom of the test cylinder, the upper part of the oil collecting tank is respectively connected with the bottoms of the two circular cavities, an oil pipe joint is arranged at the bottom of the oil collecting tank, a top plate is fixedly installed on the top of the test cylinder, hydraulic dampers are fixed on both sides of the bottom of the top plate and extend to the insides of the two circular cavities respectively, a piston is connected to the output shaft end at the bottom of the hydraulic damper and matches the circular cavity, and electronic pressure gauges corresponding to the two hydraulic dampers are also arranged on the upper end of the top plate, and a detection display is electrically connected to the lead-out position away from the electronic pressure gauge.

[0008] As a preferred solution of the automobile hydraulic brake detector described in the utility model, the bottom of the test cylinder has oil inlet holes connected to the corresponding circular cavity on both sides, and the top of the oil collecting tank has oil filling holes corresponding to the oil inlet holes on both sides.

[0009] As a preferred solution of the automobile hydraulic brake detector described in the utility model, the connection between the oil pipe joint and the oil collecting tank also has a connecting nut.

[0010] As a preferred solution of the automobile hydraulic brake detector described in the utility model, a wire is further connected between the detection display and the electronic pressure gauge.

[0011] As a preferred solution of the automobile hydraulic brake detector described in the utility model, a wire box covering the outside of the electronic pressure gauge is also provided on the upper end of the top plate, and a detachable box cover is also provided on the upper part of the wire box, and the wires pass through the wire box and are connected to the electronic pressure gauge.

[0012] As a preferred solution of the automobile hydraulic brake detector described in the utility model, the test tube is also provided with positioning ears 1 on both sides of the top, and the top plate is provided with positioning ears 2 corresponding to the positioning ears 1 on both sides, and a locking bolt is connected between the positioning ears 1 and 2.

[0013] Compared with the prior art, the beneficial effects of the utility model are as follows: when using the automobile hydraulic brake detector, the oil pipe joint is fixedly connected to the oil pipe of the hydraulic brake part to be detected, and then the automobile brake pedal is stepped on, and the hydraulic oil will be injected into the oil collecting tank through the oil pipe joint, and the oil will be respectively introduced into the circular cavities on both sides under the action of pressure, and the piston will form a pushing force on the hydraulic damper under the action of oil pressure. At the same time, the detection display can obtain the pressure value and fluctuation value of the two hydraulic dampers at the same time through the electronic pressure gauge, and then calculate the average value, so that the detection is more accurate. At the same time, the brake pedal can be stepped on continuously for about 20 seconds. If the reading of the electronic pressure gauge does not drop during this time period, it means that the hydraulic brake part is faulty and does not need to be repaired. If the reading of the electronic pressure gauge drops slowly or fluctuates irregularly during this time period, it means that the hydraulic brake part has a fault and needs to be disassembled and repaired. The operation is simple and the design is reasonable, and the purpose of efficient detection of hydraulic brake faults is achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the structure of the utility model after the top plate and the test tube are separated;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model when the internal brake is not applied;

[0017] Figure 4 This is a schematic diagram of the structure of the utility model when facing the internal brake.

[0018] In the figure: 100, test cylinder; 110, circular cavity; 120, oil inlet hole; 130, positioning ear one; 200, oil collecting tank; 210, oil filling hole; 300, oil pipe joint; 310, connecting nut; 400, top plate; 410, hydraulic damper; 420, piston; 430, electronic pressure gauge; 440, positioning ear two; 500, detection display; 510, wire; 600, junction box; 700, locking bolt. DETAILED DESCRIPTION

[0019] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0020] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0021] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Figure 1-Figure 4 The following is a schematic diagram of the entire structure of a vehicle hydraulic brake detector of the utility model. Figure 1-Figure 4 , an automobile hydraulic brake detector of the present embodiment includes a test cylinder 100, with circular cavities 110 arranged along the length direction on both sides of the inside of the test cylinder 100, an oil collecting tank 200 is fixed at the bottom of the test cylinder 100, the upper part of the oil collecting tank 200 is respectively connected with the bottoms of the two circular cavities 110, and an oil pipe joint 300 is arranged at the bottom of the oil collecting tank 200, and a top plate 400 is fixedly installed on the top of the test cylinder 100, and hydraulic dampers 41 are fixed on both sides of the bottom of the top plate 400 and extend to the insides of the two circular cavities 110 respectively, and the bottom output shaft end of the hydraulic damper 41 is connected to a piston 420 that matches the circular cavity 110, and the upper end of the top plate 400 is also provided with electronic pressure gauges 430 corresponding to the two hydraulic dampers 41, and a detection display 500 is electrically connected to the lead-out position away from the electronic pressure gauge 430.

[0023] The bottom of the test cylinder 100 has oil inlet holes 120 connected to the corresponding circular cavity 110 on both sides, and the top of the oil collecting tank 200 has oil filling holes 210 corresponding to the oil inlet holes 120 on both sides. During the test, after the oil in the hydraulic brake pipeline enters the oil collecting tank 200, it will be introduced into the circular cavity 110 on both sides through the oil filling holes 210 and the oil inlet holes 120 under pressure. Since the pressure of the circular cavity 110 on both sides is equal, the top pressure of the hydraulic damper 410 on both sides is also the same, which is conducive to the detection end to obtain data and calculate the average value, so that the test is more accurate. In addition, the hydraulic damper device used here has the characteristics of good vibration reduction effect, high-frequency shock and large load resistance, and is suitable for measuring the pressure of the hydraulic brake pipeline and whether abnormal fluctuations occur in this embodiment.

[0024] The connection between the oil pipe joint 300 and the oil collecting tank 200 also has a connecting nut 310. Here, due to the different types of vehicles being tested, the oil pipe joints 300 of different specifications can be replaced through the connecting nut 310 so that they can be adapted to the hydraulic brake pipelines of different types of vehicles, which is simple and practical.

[0025] A wire 510 is also connected between the detection display 500 and the electronic pressure gauge 430. In actual applications, the detection display 500 can be led out from the bottom of the vehicle through the wire 510, which is beneficial for staff to observe and inspect, and makes the detection operation more convenient.

[0026] Furthermore, a wiring box 600 is provided at the upper end of the top plate 400 and is covered on the outside of the electronic pressure gauge 430, and the upper part of the wiring box 600 also has a detachable box cover. At the same time, the wire 510 passes through the wiring box 600 and is connected to the electronic pressure gauge 430. The wiring box 600 can be provided with external protection for the electronic pressure gauge 430 to prevent it from being damaged by bumps during daily operation and maintenance. The box cover on the top of the wiring box 600 can be understood as an inspection cover, which can be opened to facilitate the maintenance and replacement of the electronic pressure gauge 430.

[0027] Furthermore, the test tube 100 has positioning ears 130 on both sides of the top, and the top plate 400 has positioning ears 440 on both sides corresponding to the positioning ears 130. A locking bolt 700 is connected between the positioning ears 130 and the positioning ears 440. With the cooperation of the positioning ears 130, the positioning ears 440 and the locking bolt 700, the top plate 400 and the test tube 100 can be easily disassembled and separated, thereby facilitating the disassembly, maintenance and replacement of the hydraulic damper 410, which is simple and practical.

[0028] In summary, when using a vehicle hydraulic brake detector of the present embodiment, first remove the oil pipe of the hydraulic brake part to be detected, then fix the oil pipe joint 300 to the end of the oil pipe, and then step on the vehicle brake pedal, the hydraulic oil will be injected into the oil collecting tank 200 through the oil pipe joint 300, and the oil will be introduced into the circular cavity 110 on both sides through the oil filling hole 210 and the oil inlet hole 120 under the action of pressure. The piston 420 will push the hydraulic damper 410 under the action of oil pressure. At the same time, the detection display 500 can obtain the pressure value and fluctuation value of the two hydraulic dampers 410 at the same time through the electronic pressure gauge 430, and then calculate the average value. The brake pedal can be stepped on continuously for about 20 seconds. If the reading of the electronic pressure gauge 430 does not drop during this time period, it means that the hydraulic brake part is faulty and does not need to be repaired. If the reading of the electronic pressure gauge 430 drops slowly or fluctuates irregularly during this time period, it means that the hydraulic brake part has a fault and needs to be disassembled and repaired. The operation is simple and the design is reasonable.

[0029] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An automobile hydraulic brake detector, characterized in that: The invention comprises a test cylinder (100), wherein the test cylinder (100) has circular cavities (110) arranged along the length direction on both sides thereof, an oil collecting tank (200) is fixed at the bottom of the test cylinder (100), the upper part of the oil collecting tank (200) is respectively connected to the bottoms of the two circular cavities (110), an oil pipe joint (300) is arranged at the bottom of the oil collecting tank (200), a top plate (400) is fixedly installed at the top of the test cylinder (100), hydraulic dampers (41) are fixed at both sides of the bottom of the top plate (400) and extend respectively into the insides of the two circular cavities (110), a piston (420) matching the circular cavities (110) is connected to the output shaft end at the bottom of the hydraulic damper (41), and electronic pressure gauges (430) respectively corresponding to the two hydraulic dampers (41) are also arranged at the upper end of the top plate (400), and a detection display (500) is electrically connected to the lead-out position away from the electronic pressure gauge (430).

2. The automobile hydraulic brake detector according to claim 1, characterized in that: The bottom of the test cylinder (100) is provided with oil inlet holes (120) on both sides thereof and connected to the corresponding circular cavity (110), and the top of the oil collecting tank (200) is provided with oil filling holes (210) on both sides thereof and corresponding to the oil inlet holes (120).

3. The automobile hydraulic brake detector according to claim 1, characterized in that: The connection between the oil pipe joint (300) and the oil collecting tank (200) is also provided with a connecting nut (310).

4. The automobile hydraulic brake detector according to claim 1, characterized in that: A wire (510) is also connected between the detection display (500) and the electronic pressure gauge (430).

5. The automobile hydraulic brake detector according to claim 1, characterized in that: The top end of the top plate (400) is also provided with a wire box (600) which is covered on the outside of the electronic pressure gauge (430), and the upper part of the wire box (600) is also provided with a detachable box cover, and the wire (510) passes through the wire box (600) and is connected to the electronic pressure gauge (430).

6. The automobile hydraulic brake detector according to claim 1, characterized in that: The test cylinder (100) also has positioning ears (130) on both sides of the top, and the top plate (400) has positioning ears (440) on both sides corresponding to the positioning ears (130). A locking bolt (700) is connected between the positioning ears (130) and the positioning ears (440).

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