Running-in test bench

Abstract

The utility model relates to a running-in test bench. The test bench comprises a test device and a gas path system. The testing device comprises a base and an adjustable-speed motor, a wheel set shaft is erected on the base through a set of supports, a set of wheels are fixedly arranged on the wheel set shaft, and the wheel set shaft is in transmission connection with the output end of the adjustable-speed motor; a brake is arranged on each of the front side and the rear side of each wheel on the base; the air path system comprises four two-position three-way electromagnetic valves, the inlet ends of the two-position three-way electromagnetic valves can be communicated with an air source, and the two outlet ends of the two-position three-way electromagnetic valves are correspondingly connected to an air inlet and an air outlet of the same brake through quick connectors respectively. The utility model has the beneficial effects of simple structure, high safety performance, simple operation and high efficiency, and the PLC is adopted to monitor each detection data.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle braking, in particular to a running-in test bench. Background Art

[0002] Brake is a device that has the function of slowing down, stopping or keeping a moving part (or moving machinery) stopped. It is a mechanical part that stops or slows down the moving parts in the machinery. Commonly known as brakes or gates.

[0003] As a device that stops or slows down the movement of a moving machine, the brake plays an important role in the safe operation of the moving machine. Therefore, the performance of the brake is extremely important for the vehicle. However, the existing brake test bench is relatively complex, and it is difficult for technicians to operate it during use. The complex operation reduces the efficiency of the brake test bench.

[0004] Therefore, a running-in test bench is proposed, which has simple structure, high safety performance, simple operation and high efficiency. Utility Model Content

[0005] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a running-in test bench, which has a simple structure, high safety performance, uses PLC to monitor various detection data, is easy to operate, can simultaneously perform running-in tests on multiple brakes, and is highly efficient.

[0006] The purpose of this utility model is achieved through the following technical solutions:

[0007] The running-in test bench includes a test device and an air circuit system; the test device includes a base and a speed regulating motor, a wheelset shaft is mounted on the base through a group of brackets, a group of wheels is fixed on the wheelset shaft, and the wheelset shaft is connected to the output end of the speed regulating motor by transmission; a brake is provided on the front and rear sides of the wheel on the base; the air circuit system includes four two-position three-way solenoid valves, the inlet end of the two-position three-way solenoid valve can be connected to the air source, and the two outlet ends of the two-position three-way solenoid valve are respectively connected to the air inlet and air outlet of the same brake through a quick connector; when the two-position three-way solenoid valve is connected to the corresponding brake air inlet, the brake shoe of the brake contacts the corresponding wheel for braking. This solution is provided with two wheels on the wheelset shaft, and a brake can be installed on each side of the wheel, so that this solution can perform running-in tests on four brakes at the same time.

[0008] In a preferred embodiment of this scheme, the speed regulating motor is arranged in the middle of the base, and the flat belt is sleeved between the output end of the speed regulating motor and the wheel pair shaft. The speed regulating motor drives the wheel pair shaft to rotate through the flat belt, the structure is simple and reasonable, and the overall space occupied by the equipment is small.

[0009] In a preferred embodiment of the present scheme, a belt cavity housing for protecting the flat belt is provided outside the flat belt; a mounting bracket is provided on one side of the belt cavity housing, and the belt cavity housing is mounted on the base via the mounting bracket.

[0010] In a preferred embodiment of this solution, the brake is mounted on a brake fixing plate, and the brake fixing plate, bracket, and speed regulating motor are respectively mounted on a base via screws or bolts; and a plurality of shockproof feet are provided at the bottom of the base, which can help to avoid vibration during the operation of the equipment and affect the test results.

[0011] In a preferred embodiment of the present scheme, the running-in test bench also includes a processor, which includes a PLC and a touch screen; a speed sensor is provided at the shaft end of the wheelset shaft to measure the rotational speed of the wheelset shaft, a displacement sensor is respectively installed on the brake shoe of the brake to measure the braking state and release state of the corresponding brake, and an air pressure sensor is provided at the inlet end of the two-position three-way solenoid valve to monitor the working air pressure of the corresponding brake; the speed sensor, displacement sensor, air pressure sensor, touch screen, and speed control motor are respectively electrically connected to the PLC.

[0012] In a preferred embodiment of the present scheme, the gas circuit system also includes an air storage tank; the air storage tank is connected to the air source through an air inlet pipe, and a second ball valve is provided on the air inlet pipe; the air storage tank is also connected to one end of the air supply pipe, and the inlet ends of four two-position three-way solenoid valves are respectively connected in parallel to the other end of the air supply pipe through a ball valve; the air supply pipe is also provided with a first air pressure gauge.

[0013] In a preferred embodiment of the present scheme, the top of the gas storage tank is connected to the first end of the five-way valve, the second end of the five-way valve is connected to a spring safety valve, the third end is connected to a second air pressure gauge, the fourth end is connected to the input end of the ball valve 1, the fifth end is connected to the input end of the spare pipeline, and the spare pipeline is provided with a spare ball valve; the output end of the ball valve 1 is connected to one end of the air supply pipe.

[0014] In a preferred embodiment of this solution, a pressure relief pipe is provided at the bottom of the gas storage tank, and a safety ball valve is provided on the pressure relief pipe, which can help ensure the safety of the gas circuit system.

[0015] In a preferred embodiment of this solution, the air inlet pipe is also provided with an air source triplex, which can filter the moisture in the air source.

[0016] The beneficial effects of the utility model are:

[0017] (1) In this scheme, a wheelset shaft is provided on the base, and the wheelset shaft is driven to rotate by a speed regulating motor. The wheelset shaft is provided with two wheels, and a brake can be installed on each side of the wheel. Thus, this scheme can simultaneously perform the running-in test of four brakes, and has high efficiency. At the same time, the speed regulating motor is arranged in the middle of the base, and the output end of the speed regulating motor is connected to the wheelset shaft through a flat belt. The structure is simple and compact, and the equipment occupancy is reduced;

[0018] (2) In this solution, the speed sensor, displacement sensor, air pressure sensor, touch screen, speed regulating motor, and four two-position three-way solenoid valves are electrically connected to the PLC respectively. The speed regulating motor and the brake can be started through the touch screen. The speed sensor, displacement sensor, and air pressure sensor can transmit the detection data to the PLC for calculation and analysis to determine the performance of the brake;

[0019] (3) In this scheme, the air source of the air circuit system enters the air tank and is then transported to the four brakes. The inlet end of the air tank is provided with an air source triplet to filter the air source. A pressure relief port is provided at the bottom of the air tank and a spring safety valve is provided at the top of the air tank to ensure air pressure safety and improve the safety of this scheme during the test. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the utility model;

[0021] Figure 2 It is a three-dimensional schematic diagram of the utility model;

[0022] Figure 3 It is a schematic diagram of the gas circuit system of the utility model. DETAILED DESCRIPTION

[0023] The technical solution of the present utility model is further described in detail below in conjunction with the accompanying drawings, but the protection scope of the present utility model is not limited to the following.

[0024] like Figure 1 to Figure 3 As shown, the running-in test bench includes a test device, an air circuit system, and a processing machine; the test device includes a base 01 and a speed regulating motor 06, on which a wheelset shaft 03 is mounted through a group of brackets 02, on which a group of wheels 04 are fixed, and the wheelset shaft 03 is transmission-connected to the output end of the speed regulating motor 06; on the base, a brake 08 is respectively provided on the front and rear sides of the wheel 04; the air circuit system includes four two-position three-way solenoid valves 21, the inlet end of the two-position three-way solenoid valve 21 can be connected to the air source, and the two outlet ends of the two-position three-way solenoid valve 21 are respectively connected to the air inlet and the air outlet of the same brake 08 through a quick connector; when the two-position three-way solenoid valve 21 is connected to the corresponding air inlet of the brake 08, the brake shoe of the brake 08 contacts the corresponding wheel 4 for braking.

[0025] At the same time, in this embodiment, the processor includes a PLC, a speed sensor is provided at the shaft end of the wheelset shaft 03, a displacement sensor is installed on each brake shoe of the brake 08, and an air pressure sensor is provided at the inlet end of each two-position three-way solenoid valve 21; the speed sensor, the displacement sensor, the air pressure sensor, the touch screen, the speed regulating motor 06, and the two-position three-way solenoid valve 21 are electrically connected to the PLC respectively.

[0026] In this solution, the air pressure sensor can monitor whether the working air pressure of the brake 08 meets the requirements. Only when the requirements are met can the test be carried out and recorded as a parameter. The speed sensor monitors the wheel speed, which is used as a parameter and can be recorded during an action. The displacement sensor monitors the braking state and relief state of the brake. The air pressure sensor can detect the air pressure value during the braking process to determine the braking force. The above sensors transmit the detected data information to the PLC, which calculates and determines whether the performance and safety reliability of the brake meet the requirements.

[0027] In this embodiment, the processor also includes a touch screen. After the device is powered on, the position calibration and parameter configuration of each brake can be performed after entering the touch screen, and the rotation of the wheelset shaft 03 or the start of the operation of each brake can be operated on the touch screen; and the initial and final speeds of the wheelset operation can be set on the touch screen; after the test is completed, the touch screen can also display the working status of each brake unit according to the test results, and the working status can be good braking, poor braking, good relief, and poor relief.

[0028] Furthermore, in this solution, the speed regulating motor 6 is arranged in the middle of the base 01, and the flat belt 07 is installed between the output end of the speed regulating motor 06 and the wheelset shaft 03; a belt cavity shell 09 for protecting the flat belt 07 is provided on the outside of the flat belt 07; a mounting bracket is provided on one side of the belt cavity shell 09, and is mounted on the base 01 via the mounting bracket.

[0029] In this embodiment, the base 01 is a rectangular frame base formed by connecting multiple channel steels. The brake 08 is installed on the brake fixing plate 05. The brake fixing plate 05, the bracket 02, and the speed regulating motor 06 are respectively installed on the channel steel via screws or bolts. A plurality of shock-proof pads 017 are provided at the bottom of the channel steel on the four sides.

[0030] Furthermore, in the present embodiment, the gas circuit system also includes an air storage tank 9; the air storage tank 9 is connected to the gas source through an air intake pipe, and a ball valve 2 5 and an air source triplet 8 are provided on the air intake pipe; the air storage tank 9 is also connected to one end of the air supply pipe, and the inlet ends of four two-position three-way solenoid valves 21 are respectively connected in parallel to the other end of the air supply pipe through a ball valve 20; a first air pressure gauge 17 is also provided on the air supply pipe.

[0031] Furthermore, in the present scheme, the gas storage tank 9 is connected to the first end of the five-way valve 12 through the external thread connector three 10, the second end of the five-way valve 12 is connected to the spring safety valve 13, the third end is connected to the second pressure gauge 11, the fourth end is connected to the input end of the ball valve 14, the fifth end is connected to the spare pipeline, and the spare pipeline is provided with a spare ball valve; the output end of the ball valve 14 is connected to the first end of the three-way valve 18 through the air supply pipe, the second end and the third end of the three-way valve 18 are respectively connected to a ball valve 21 through a pipeline, and the inlet ends of the two ball valves 21 are also connected to another ball valve 21 respectively through an external thread head four 19, thereby forming four ball valves 21 connected in parallel to one end of the air supply pipe.

[0032] In this embodiment, the air inlet pipe is further provided with an air source triplet 8, the input end of the air source triplet 8 is connected to one end of the ball valve 2 5, and the other end of the ball valve 2 5 is connected to the air source through the external thread 4.

[0033] Furthermore, in this solution, a pressure relief port is also provided at the bottom of the gas storage tank 9, and the pressure relief port is connected to a safety valve 3 through an elbow 1 and a male thread straight connector 2.

[0034] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. Running-in test bench, characterized by: Including testing equipment and gas circuit system; The testing device comprises a base (01) and a speed regulating motor (06); a wheelset shaft (03) is mounted on the base (01) via a group of brackets (02); a group of wheels (04) is fixedly mounted on the wheelset shaft (03); and the wheelset shaft (03) is drivingly connected to the output end of the speed regulating motor (06); On the base, a brake (08) is provided on the front and rear sides of the wheel (04) respectively; The gas circuit system comprises four two-position three-way solenoid valves (21), the inlet end of the two-position three-way solenoid valve (21) can be connected to the gas source, and the two outlet ends of the two-position three-way solenoid valve (21) are respectively connected to the air inlet and the air outlet of the same brake (08) through a quick connector; When the two-position three-way solenoid valve (21) is connected to the air inlet of the corresponding brake (08), the brake shoe of the brake (08) contacts the corresponding wheel (04) to perform braking.

2. The running-in test bench according to claim 1, characterized in that: The speed regulating motor (06) is arranged in the middle of the base (01), and the flat belt (07) is sleeved between the output end of the speed regulating motor (06) and the wheelset shaft (03).

3. The running-in test bench according to claim 2, characterized in that: The flat belt (07) is provided with a belt cavity housing (09) on the outside for protecting the flat belt (07); The belt cavity housing (09) is provided with a mounting bracket on one side thereof, and is mounted on the base (01) via the mounting bracket.

4. The running-in test bench according to claim 3, characterized in that: The brake (08) is mounted on the brake fixing plate (05), and the brake fixing plate (05), the bracket (02), and the speed regulating motor (06) are respectively mounted on the base (01) via screws or bolts; The bottom of the base (01) is provided with a plurality of shock-proof feet (017).

5. The running-in test bench according to any one of claims 1 to 4, characterized in that: The running-in test bench also includes a processor, which includes a PLC and a touch screen; A speed sensor is provided at the shaft end of the wheelset shaft (03) to measure the rotation speed of the wheelset shaft (03); a displacement sensor is installed on each brake shoe of the brake (08) to measure the braking state and release state of the corresponding brake (08); and an air pressure sensor is provided at the inlet end of the two-position three-way solenoid valve (21) to monitor the working air pressure of the corresponding brake (08); The speed sensor, displacement sensor, air pressure sensor, touch screen, speed regulating motor (06), and two-position three-way solenoid valve (21) are electrically connected to the PLC respectively.

6. The running-in test bench according to claim 1, characterized in that: The gas circuit system further comprises a gas storage tank (9); The gas storage tank (9) is connected to the gas source through an air inlet pipe, and a second ball valve (5) is provided on the air inlet pipe; The gas storage tank (9) is also connected to one end of the gas supply pipe, and the inlet ends of the four two-position three-way solenoid valves (21) are respectively connected in parallel to the other end of the gas supply pipe through a ball valve (20); The air supply pipe is also provided with a first air pressure gauge (17).

7. The running-in test bench according to claim 6, characterized in that: The top of the gas storage tank (9) is connected to the first end of a five-way valve (12), the second end of the five-way valve (12) is connected to a spring safety valve (13), the third end is connected to a second air pressure gauge (11), the fourth end is connected to an input end of a ball valve 1 (14), and the fifth end is connected to an input end of a spare pipeline, and a spare ball valve is provided on the spare pipeline; The output end of the ball valve 1 (14) is connected to one end of the air supply pipe.

8. The running-in test bench according to claim 7, characterized in that: The bottom of the gas storage tank (9) is also provided with a pressure relief pipe, and a safety ball valve (3) is provided on the pressure relief pipe.

9. The running-in test bench according to claim 8, characterized in that: The air inlet pipe is also provided with an air source triplex (8).

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