KR102135448B1 - Brake hose check device - Google Patents

Abstract

The present invention is to provide a brake hose pressure measuring device capable of automatically performing a pressure test, which is compatible with brake hoses of various standards ranging from 20 to 30 types.
That is, the present invention is a first docking portion 12 for clamping the first bracket (2) of the brake hose (1) is moved up and down on the z-axis guide (11), and fastened to the first bracket (2) A vertical pressure check stage 10 provided with an injection nozzle 14 for inputting compressed air; A second dock to move the x, y-axis guides 21 and 23 from the lower part of the first docking part 12 to the x and y axes, and to clamp the second bracket 3 of the brake hose 1 A horizontal pressure check stage (20) is provided with a shut-off valve (24) for closing the second part (3) and the second bracket (3); A pneumatic inspection unit 30 connected to the injection nozzle 14 to supply high and low pressure compressed air; It characterized in that it comprises a; control unit 40 for setting the position and angle of the first and second docking portion (12, 22) corresponding to the type of brake hose (1).

Description

Brake hose check device}

The present invention relates to a brake hose pressure gauge device, and more specifically, to a brake hose pressure gauge device capable of automatically performing a pressure test in compliance with brake hoses of 20 to 30 types.

In general, the brake hose, which is one of the components constituting the brake system of a vehicle, is a pipe for transmitting hydraulic pressure between a chassis and a wheel, and is configured by selectively combining a pimel bracket and an eye joint bracket on both ends of the hose. However, since the shape, outer diameter, angle, and length of each bracket are provided for each vehicle type, the work artist assembles the brake hose and bracket configuration by hand, as well as a pressure leak tester that is appropriately set according to the type of brake hose. After the first inspection by injecting it, it was re-injected into the clogging inspection device, followed by the cumbersome problem that each of the second inspections had to be performed manually.

Accordingly, in the conventionally disclosed patent publication No. 10-2017-0028519, the hose fitting is supplied from the supply unit to inspect the concentricity of the seat surface of the hose fitting, and a concentricity inspection unit to distinguish good products from defective products, and a good quality determination from the concentricity inspection unit A complex inspection unit that distinguishes good and bad products by performing any one or more of hole inspection, nipple depth inspection, flange stamping inspection, brazing inspection, overall dimension inspection, upper whipping inspection, hole real chip inspection, and nipple defect inspection Although the technology consisting of has been previously disclosed, it is impossible to perform general-purpose work on nipples having various shapes, outer diameters, angles, and lengths of each type, and in particular, there are limitations that cannot be performed for pressure leak and clogging defect tests for different types of fittings. .

In addition, in another prior art Patent Publication No. 10-2017-0105219, as an automatic assembly device inspection device for checking the fastening state of the hose and the bracket, the first to check the fastening state of the one end of the hose and the straight mold An inspection unit and a second inspection unit for confirming the fastening state of the other end of the hose and the curved bracket, the first inspection unit and the second inspection unit, a pressure gauge providing air pressure to the fastening portion of the hose and the bracket, the A technology including a support assembly including a pressure assembly having a rotary motor providing rotational movement power of a pressure gauge, and a linear motor coupled to one side of the pressure detection assembly and providing linear movement power of the pressure gauge assembly has been previously disclosed. However, this is a dedicated machine limited to the inspection that checks the fastening state of the hose and the bracket by providing air pressure inside the product, and the hose clogging defect is accompanied by a cumbersome problem that must be inspected by a separate equipment or the naked eye.

In the present invention, in order to solve the above-mentioned problems in the prior art, a new technology was devised, and various brake hose varieties divided into 20-30 types by a combination of pimel brackets and eye joint brackets having different shapes, outer diameters, angles, and lengths. It is an object of the present invention to provide a brake hose pressure measuring device that is compatible with and automatically performs a pressure checking operation.

In addition, the brake hose is inspected continuously in a short time without any pressure leak due to high and low pressure compressed air being injected into the brake hose through the injection nozzle with one bracket closed or open by the shutoff valve. The purpose is to provide a device.

In order to achieve this object, a feature of the present invention is that the first bracket 2 composed of a pimel bracket is fastened to one end of the brake hose 1, and the second bracket composed of a pimel bracket or an eye joint bracket at the other end ( 3) In the brake hose pressure measuring device formed by the fastening, the z-axis guide (11) is moved up and down position, the first docking portion (12) for clamping the first bracket (2) of the brake hose (1) , Longitudinal longitudinal pressure stage 10 is fastened to the first bracket (2) is provided with an injection nozzle 14 for introducing compressed air; The second docking part 22 and the second bracket (22) clamping the second bracket (3) of the brake hose (1) by moving the front and rear positions by riding the horizontal axis guide (21) under the first docking part (12) 3) the horizontal pressure check stage 20 is provided with a shut-off valve 24 to close; A pneumatic inspection unit 30 connected to the injection nozzle 14 to supply high and low pressure compressed air, and provided to measure pressure leak and clogging defects in the brake hose 1; A control unit for setting the position and angle of the first and second docking parts 12 and 22 corresponding to the type of brake hose 1 including the shapes, angles, and intervals of the first and second brackets 2 and 3 (40); And clamping the brake hose 1 to load and unload the first and second brackets 2 and 3 to the first and second docking parts 12 and 22 by the operation of the robot arm 52. It characterized in that it comprises a; transfer hand unit (50).

According to a specific means for solving the above-described problem, the present invention is a type, a cross-axis compression stage according to the type of brake hose divided into 20-30 types by a combination of pimel brackets and eye joint brackets having different shapes, outer diameters, angles, and lengths. The position of the 1st and 2nd docking parts is simply varied, improving the universal compatibility of the pressure check process. In particular, high and low pressure compressed air is introduced into the brake hose through the injection nozzle with one bracket closed or open by a shutoff valve. Is injected, the pressure leak and clogging defect inspection process is continuously performed in a short time.

1 is a perspective view showing a brake hose pressure gauge according to an embodiment of the present invention as a whole.
Figure 2 is a block diagram showing a brake hose pressure measuring device according to an embodiment of the present invention on the side.
Figure 3 is an enlarged configuration diagram showing a brake hose pressure gauge according to an embodiment of the present invention.
Figure 4 is an enlarged configuration diagram showing a longitudinal axis pressure stage of the brake hose pressure gauge according to an embodiment of the present invention.
Figure 5 is an enlarged configuration diagram showing the transverse pressure stage of the brake hose pressure measuring device according to an embodiment of the present invention.
Figure 6 is a block diagram showing a modified example of the horizontal pressure detection stage shut-off valve of the brake hose pressure measuring device according to an embodiment of the present invention.
7 to 9 is a block diagram of a brake hose pressure measuring device according to an embodiment of the present invention, the horizontal axis of the pressure detection stage is a configuration diagram showing a position and angle set state corresponding to the type of brake hose.
10 is a block diagram showing a transfer hand portion of the brake hose pressure measuring device according to an embodiment of the present invention.
11 is a block diagram showing a pneumatic inspection unit of the brake hose pressure measuring device according to an embodiment of the present invention.
12 is a block diagram showing a high and low pressure valve of the brake hose pressure measuring device according to an embodiment of the present invention.
13 is a block diagram showing a high, low pressure valve operating state of the brake hose pressure measuring device according to an embodiment of the present invention.
14 is a block diagram showing the operating state of the pneumatic inspection unit of the brake hose pressure measuring device according to an embodiment of the present invention.

Hereinafter, specific contents for carrying out the present invention will be described with reference to the accompanying drawings. In the description of the present invention, when it is determined that the gist of the present invention may unnecessarily obscure the related well-known functions to those skilled in the art, detailed description thereof will be omitted.

The present invention is a first hose (2) consisting of a pimel bracket on one end of the hose (1), the other end of the pimel bracket or a second bracket (3) composed of an Ijoint bracket is fastened to produce a brake hose As a device for inspecting, it is possible to inspect the existing brake hose varieties divided into 30 types by varying the positions of the 1st and 2nd docking parts of the longitudinal and transverse compression stages, thereby significantly improving the universal compatibility of the inspection process. As shown in Figure 1, the vertical axis pressure stage 10, the horizontal axis pressure stage 20, the pneumatic inspection unit 30, the control unit 40, and consists of a main configuration including a transfer hand unit 50.

The longitudinal axis pressure stage 10 according to the present invention is a first docking portion 12 and a first docking part 12 for moving the up and down position on the z-axis guide 11 and clamping the first bracket 2 of the brake hose 1 It is fastened to the bracket (2) is provided with an injection nozzle 14 for injecting compressed air. The longitudinal axis pressure stage 10 is vertically transported along the z-axis guide 11 by the driving unit along the length of the brake hose 1, and is an upright structure supporting the brake hose 1 in the longitudinal direction as shown in FIGS. 1 to 3. Therefore, it is possible to simultaneously inspect a plurality of brake hoses in a narrow space.

In FIG. 4, the first docking portion 12 includes a first pressure chamber 12a into which the first bracket 2 is fitted and a first bracket 2 accommodated in the first pressure chamber 12a by a pivoting operation. ) Is composed of a first stop piece (12b) for restraining. The first pressure chamber 12a is formed with a'U'-shaped groove in which a small-diameter portion of the first bracket 2 is fitted on one side, and the first bracket 2 accommodated in the'U'-shaped groove is pivoted by a driving unit It is constrained by the first stop piece 12b being operated. Subsequently, the injection nozzle 14 descends by the driving unit and is pressed against the first bracket 2.

In addition, the horizontal axis pressure stage 20 according to the present invention is moved to the x, y axis by riding the x, y axis guides 21 and 23 from the lower part of the first docking part 12, and the brake hose 1 A second docking portion 22 for clamping the second bracket 3 of, and a shut-off valve 24 for closing the second bracket 3 are provided. The horizontal axis pressure stage 20 is transferred to the x and y axes by driving the x and y axis guides 21 and 23 by the driving unit according to the angles of the first and second brackets (2) and (3), and the first bracket ( It is provided to close the second bracket (3) of the brake hose (1) forming a straight or inclined angle based on 2).

In FIG. 5, the second docking portion 22 includes a second pressure chamber 22a into which the second bracket 3 is fitted and a second bracket 3 accommodated in the second pressure chamber 22a by a pivoting operation. ) Is composed of a second stop piece (22b) for restraining. The second pressure chamber 22a is formed with a'U'-shaped groove into which a small-diameter portion of the second bracket 3 is fitted on one side, and the second bracket 3 accommodated in the'U'-shaped groove is pivoted by a driving unit It is constrained by the second stop piece 22b being operated. Thereafter, the shut-off valve 24 is transferred by the driving unit to pressurize and close the second bracket 3.

At this time, the shut-off valve 24 is provided in one place so as to be fastened in one direction to the pimel bracket type as shown in Figure 6 (a), or to be provided in a pair to be fastened in both directions to the eye joint bracket type as shown in Figure 6 (b). Can.

In addition, the horizontal axis pressure stage 20 rides on the x and y axis guides 21 and 23, and the base plate 25 is transferred to the x and y axes, and the longitudinal axis 25a is centered on the base plate 25. It consists of an X-axis plate (26) that is rotated, and a Y-axis plate (28) that is pivoted around the horizontal axis (28a) on the X-axis plate (26), and on which the second docking portion (22) is mounted.

As described above, the base plate 25, the X-axis plate 26, and the Y-axis plate 28 are precisely controlled by the servo motor, and the second docking part (while the brake hose maintains a straight line according to the first and second bracket angles) 22) the position is adjusted to accommodate the second bracket, wherein the position of the base plate 25, X-axis plate 26 and Y-axis plate 28 according to the type of brake hose is stored in each control unit 40 Afterwards, when inspecting the relevant breed, the breeding input process through the control unit 40 or the breeding detection process for the sensor is used to automatically set the position of the species and the horizontal axis of the pressure check stage 10 and 20. That is, the control unit 40 corresponds to the type of brake hose 1 including the shapes, angles, and intervals of the first and second brackets 2 and 3, and the first and second docking units 12 and 22. It is provided to set the position and angle.

FIG. 7 shows a state in which the first and second docking portions 12 and 22 are set to face on a straight line, and the brake hose 1 composed of the pimel bracket-pimel bracket combination is loaded, and FIGS. 8 to 9 are The angle of the second docking portion 22 of the transverse pressure gauge stage 20 is adjusted to show a state in which the brake hose 1 composed of the pimel bracket-Ijoint bracket combination is loaded.

The pneumatic inspection unit 30 according to the present invention is for inspecting pressure leaks and clogging defects of the manufactured brake hose 1, and is connected to the injection nozzle 14 to supply high-pressure compressed air to the brake hose. .

In FIG. 11, the pneumatic inspection unit 30 is connected to the main pipe 31 and the main pipe 31 connected to the injection nozzle 14, and high and low pressure flow paths 32a and 32b are formed, thereby forming a high pressure. A pressure chamber (32) in which the sensor (33) is installed, and a high pressure valve (300) for controlling on/off control of high pressure compressed air movement supplied through the high pressure line (L1) by opening and closing the high pressure flow path (32a), A drain valve 35 that controls on/off the movement of the low-pressure compressed air supplied through the low-pressure line L2 by opening and closing the low-pressure flow path 32b and discharges compressed air in the main conduit 31 during the on operation. A low pressure valve (300') is provided, a low pressure sensor (37) is provided on the low pressure line (L2) to measure low pressure compressed air pressure, and is supplied to the low pressure valve (300') through the low pressure line (L2). It comprises a check valve (38) for blocking the back flow of low pressure compressed air and a normally closed valve (39) for controlling the supply of low pressure compressed air through the low pressure line (L2).

Here, the high pressure line (L1) is a piping configuration in which high pressure compressed air is injected and moved into the pressure gauge to check the pressure leak of the manufactured brake hose, and the low pressure line (L) is a brake immediately after the pressure leak inspection is completed. It is a piping configuration in which low-pressure compressed air is injected and moved to check for clogging defects in the hose (1).

And, the low pressure compressed air supplied to the normally closed valve 39 transmits a supply error message when the pressure value is less than or equal to the set limit by the constant pressure sensor.

In FIG. 12, the high and low pressure valves 300 and 300 ′ are provided in the valve cylinder 320 provided with the supply port 322 and the discharge port 324 and the valve cylinder 320 and penetrated through the center. The needle seat portion 340 in which the hole 342 is formed, and inserted into the valve cylinder 320 and linearly transferred by the driving cylinder 310 and provided to open and close the through hole 342 of the needle seat portion 340 It is composed of a needle 360 and a ceramic ball 380 that is detachably installed in an intaglio groove at the end of the needle 360 and directly contacts the through hole 342.

13 (a), the driving cylinder 310 is the inner piston 314 is transferred downward by the elastic body 312, the through-hole 342 is always closed by the needle 360, and the Fig. 13 ( As shown in b), as the piston 314 is moved upward by the pneumatic pressure supplied into the driving cylinder 310, the needle 360 is provided to open the through hole 342 to allow pneumatic movement.

As described above, since the closing force of the needle 360 always acts by the elastic body 312, the opening force of the needle 360 is generated by temporarily supplying hydraulic pressure into the driving cylinder 310 only during the opening operation, and thus 150 to 170 kgf In order to prevent the high pressure compressed air from moving, a separate constant high pressure drive source is unnecessary, thereby simplifying the equipment.

In addition, a ceramic ball 380 is detachably provided at the end of the needle 360 that opens and closes the through-hole 342 of the needle seat portion 340, so that the wear rate is significantly reduced in the process of controlling the high-pressure compressed air and wear is reduced. Due to this, there is an advantage of reducing the maintenance cost by partially replacing the ceramic ball 380 when a leak occurs.

In addition, a discharge port 324 of the high pressure valve 300 is connected to the high pressure flow passage 32a of the pressure chamber 32, and a low pressure valve 300 ′ is supplied to the low pressure flow passage 32b of the pressure chamber 32. Port 322 is connected. Thus, while a single valve can be used for both high and low pressure valves 300 and 300', high pressure compressed air injection through the supply port 322 of the high pressure valve 300 and supply port 322 of the low pressure valve 300' ) Through the low pressure compressed air injection is made in a complex.

Figure 14 (a) is a state diagram showing the flow of the high pressure line during the pneumatic inspection using a brake hose pressure gauge, the pressure leak test using the pneumatic inspection unit 30 (for example, the first and second brackets (2) (3) ) In the case of pressure leak inspection of the fastening part), the injection nozzle 14 and the shut-off valve 24 are fastened to the brake hose 1, the first and second brackets 2, 3, and the low pressure valve 300' is turned off. After that, the high pressure valve 300 is turned on, and the high pressure compressed air is supplied into the brake hose 1 through the pressure chamber 32 and the main pipe 31, and then the high pressure valve 300 is turned off to operate the control unit 40 ), it is determined whether the pressure is leaked by the pressure fluctuation value measured through the high pressure sensor 33 during the set time.

Specifically, 150~170kgf of high-pressure compressed air is supplied for 2~5 seconds through the operation of the high-pressure valve 300, and the pressure is stabilized for 4-6 seconds by the operation of the high-pressure valve 300 off, and then the high-pressure sensor It detects the pressure displacement of 33) and determines that a leak occurs when the pressure difference between the start and end points of the pressure measurement is 2 kgf or more, and the differential pressure value is provided to be adjustable by the control unit. On the other hand, after the pressure leak test is completed, the disconnection valve 24 and the two brackets 3 are disconnected to exhaust the pressure inside the brake hose 1 for 2-3 seconds.

14 (b) is a state diagram showing the flow of a low pressure line during a pneumatic inspection using a brake hose pressure measuring device, when using the pneumatic inspection unit 30 to inspect the clogging of the brake hose 1, the brake hose 1 The injection hole 14 is fastened to the first bracket 2, the shut-off valve 24 is released from the second bracket 3, and after the high pressure valve 300 is operated off, the low pressure valve 300' and the normally closed The low pressure sensor 37 is measured while the low pressure compressed air passes through the brake hose 1 through the pressure chamber 32 and the main pipeline 31 through the second bracket 3 through the valve 39 on operation. If the value is measured over the set value, the control unit 40 is judged as a clogging failure.

Specifically, when the low pressure valve (300') is operated, 2-4 kgf low pressure compressed air is supplied for 2-4 seconds, and if the measured value of the low pressure sensor (37) is 1.1 kgf or more while the low pressure compressed air is supplied, clogging is defective. It is judged as normal. On the other hand, after the inspection of the clogging defect is completed, the injection nozzle 14 and the first bracket 2 are disconnected to exhaust the pressure inside the brake hose 1.

The brake hose pressure measuring device provided in the present invention is provided with a transfer hand unit 50 to clamp the brake hose 1 to operate the robot arm 52 to operate the first and second brackets 2 and 3 first. , Loading and unloading to the two docking parts 12 and 22 is performed automatically.

10(a) to 10(c) show a state in which the gap between the fixed clamp 56 and the floating clamp 58 is adjusted in correspondence with the length of the brake hose 1. The transfer hand unit 50 is fixed to a guide rail 54 connected to the robot arm 52, a fixed clamp 56 fixed to one end of the guide rail 54 and clamping one end of the brake hose 1, Consisting of the clamp (56) is transported on the guide rail (54) is composed of a fluid clamp (58) for clamping the other end of the brake hose (1). At this time, the fixed clamp 56 and the flow clamp 58 are adjusted at intervals along the length of the brake hose 1 to be clamped at both end positions adjacent to the first and second brackets, and thereafter a predetermined expansion force acts to apply the brake hose 1 ) As both ends are pulled and loaded in a state in which tension is maintained in a straight line, loading precision of the first and second brackets 2 and 3 and the first and second docking parts 12 and 22 may be improved.

When a plurality of the fixed clamp 56 and the floating clamp 58 are provided, at least 2 to 4 brake hoses 1 are simultaneously loaded and unloaded in one cycle operation of the robot arm 52, so many brake hoses are inspected at the same time. can do.

As described above, in the detailed description of the present invention, the most preferred embodiments of the present invention have been described, but various modifications may be made without departing from the scope of the present invention. Therefore, the protection scope of the present invention should not be limited to the above-described embodiments, but the protection scope should be recognized from the technologies of the claims to be described later and the technical means equivalent to these technologies.

1: brake hose 2: first bracket 3: second bracket
10: longitudinal axis pressure stage 11: z-axis guide
12: 1st docking part 12a: 1st pressure chamber 12b: 1st stop piece
14: injection nozzle
20: Transverse pressure check stage 21: X-axis guide
22: second docking portion 22a: second pressure chamber 22b: second stop piece
23: y-axis guide
24: Shut-off valve 25: Base plate 25a: Vertical axis
26: X-axis plate 28: Y-axis plate 28a: Horizontal axis
30: pneumatic inspection unit
31: main pipe 32: pressure chamber 32a, 32b: high, low pressure flow path
33: high pressure sensor 35: drain valve 37: low pressure sensor
38: check valve 39: normally closed valve
40: control unit 50: transfer hand unit 52: robot arm
54: guide rail 56: fixed clamp 58: floating clamp
300, 300': high and low pressure valves
310: driving cylinder 312: elastic body 314: piston
320: valve cylinder 322: supply port 324: discharge port
340: Needle seat portion 342: Through hole 360: Needle
380: ceramic ball L1: high pressure line L2: low pressure line

Claims (9)

The brake hose (1), the first bracket (2) made of a pimel bracket is fastened to one end, the second end (3) composed of a pimel bracket or an eye joint bracket is fastened to the brake hose pressure measuring device In,
The z-axis guide (11) is moved up and down, and the first docking part (12) for clamping the first bracket (2) of the brake hose (1) and the first bracket (2) are fastened to pressurized air. Longitudinal longitudinal pressure stage 10 is provided with an injection nozzle 14;
A second dock to move the x, y-axis guides 21 and 23 from the lower part of the first docking part 12 to the x and y axes, and to clamp the second bracket 3 of the brake hose 1 Transverse pressure check stage 20 is provided with a shut-off valve 24 for closing the second 22 and the second bracket (3);
A pneumatic inspection unit 30 connected to the injection nozzle 14 to supply high and low pressure compressed air to measure pressure leak and clogging defects in the brake hose 1;
A control unit for setting the position and angle of the first and second docking portions 12 and 22 corresponding to the type of brake hose 1 including the shapes, angles, and intervals of the first and second brackets 2 and 3 (40); is made, including,
The pneumatic inspection unit 30 is connected to the main pipe 31 connected to the injection nozzle 14, the main pipe 31, and high and low pressure flow paths 32a and 32b are formed while the high pressure sensor 33 The pressure chamber 32 is installed, the high-pressure valve (300) for controlling the on/off control of the high-pressure compressed air supplied through the high-pressure line (L1) by opening and closing the high-pressure flow path (32a), and the low-pressure flow path ( A low pressure valve equipped with a drain valve (35) for controlling on/off control of low pressure compressed air movement supplied through the low pressure line (L2) by opening/closing operation of the 32b) and exhausting compressed air in the main conduit (31) during on operation. (300'), a low pressure sensor (37) provided in the low pressure line (L2) for measuring low pressure compressed air pressure, and low pressure compressed air backflow supplied to the low pressure valve (300') through the low pressure line (L2) And a check valve (38) for blocking off, and a normally closed valve (39) for controlling the supply of low pressure compressed air through the low pressure line (L2).
According to claim 1,
The first and second docking portions 12 and 22 are first and second pressure chambers 12a and 22a into which the first and second brackets 2 and 3 are fitted, and the first by the turning operation. , Two pressure chambers (12a) (22a), the first and second brackets (2) (3) housed in the first and second stop pieces (12b) (22b), characterized in that it consists of a brake hose pressure measuring device.
According to claim 1,
The horizontal axis pressure stage 20 is mounted on the x and y axis guides 21 and 23, and the base plate 25 is transferred in the x and y axis directions, and the longitudinal axis 25a is centered on the base plate 25. It is composed of a pivoting X-axis plate 26 and a Y-axis plate 28 that is pivoted on the X-axis plate 26 around the horizontal axis 28a and on which the second docking portion 22 is mounted. Brake hose pressure gauge.
According to claim 1,
The brake hose pressure monitoring device clamps the brake hose (1) to load and unload the first and second brackets (2) and (3) to the first and second docking parts (12 and 22) by operating the robot arm (52). Further comprising a transfer hand unit 50 provided to load,
The transfer hand unit 50 is fixed to a guide rail 54 connected to the robot arm 52, a fixed clamp 56 fixed to one end of the guide rail 54 and clamping one end of the brake hose 1, Brake hose pressure measuring device characterized in that it consists of a flow clamp (58) to be transported on the guide rail (54) based on the clamp (56) to clamp the other end of the brake hose (1).
According to claim 1,
When the pressure leak is inspected using the pneumatic inspection unit 30, the injection nozzle 14 and the shutoff valve 24 are fastened to the brake hose 1 first and second brackets 2 and 3, and the low pressure valve 300 ') After the off operation, the high pressure valve 300 is turned on, and the high pressure compressed air is supplied into the brake hose 1 through the pressure chamber 32 and the main pipeline 31, and then the high pressure valve 300 is turned off. , The control unit 40 is configured to determine whether the pressure is leaked by the pressure fluctuation value measured through the high pressure sensor 33 during the set time.
According to claim 1,
When inspecting the clogging defect of the brake hose 1 using the pneumatic inspection unit 30, the injection hose 14 is fastened to the brake hose 1 first bracket 2, and the second bracket 3 is a shut-off valve (24) is released, and after the high pressure valve (300) is turned off, the low pressure compressed air is braked through the pressure chamber (32) and the main pipe (31) by operating the low pressure valve (300') and the normally closed valve (39). Brake hose characterized in that it is configured to determine if the low pressure sensor (37) measured value exceeds the set value while passing through the inside of the hose (1) and exhausted through the second bracket (3) Suppression device.
According to claim 1,
The high and low pressure valves 300 and 300' are provided in a valve cylinder 320 provided with a supply port 322 and a discharge port 324, and a through hole 342 provided in the center of the valve cylinder 320. The needle seat portion 340 and the needle 360 which is inserted into the valve cylinder 320 and is linearly transported by the driving cylinder 310 and is provided to open and close the through hole 342 of the needle seat portion 340. And, the needle 360 is configured to be detachably installed in the intaglio groove of the ceramic ball 380 is in direct contact with the through-hole 342, the drive cylinder 310 is an internal piston 314 by an elastic body 312 ) As the through hole 342 is always closed by the needle 360 as the feed is downward, the needle 360 is penetrated while the piston 314 is moved upward by the pneumatic pressure supplied into the drive cylinder 310. Brake hose pressure measuring device characterized in that it is provided to allow the pneumatic movement by opening the hole (342).
The method of claim 7,
A discharge port 324 of the high pressure valve 300 is connected to the high pressure flow passage 32a of the pressure chamber 32, and a supply port of the low pressure valve 300 ′ to the low pressure flow passage 32b of the pressure chamber 32 ( 322) brake hose pressure measuring device characterized in that the connection.
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