Air path device for assisting pneumatic brake vehicle to control braking

Abstract

The invention discloses a gas circuit device for assisting a steam brake vehicle to control braking, and relates to the technical field of braking, the gas circuit device comprises a shell, one side of the shell is provided with a sealing cover, the other side of the shell is connected with a gas inlet, the interior of the shell is connected with a diaphragm, and the outer side of the shell is provided with a protection structure; and a drying structure is arranged on the outer side of the air inlet. By arranging the treatment box, the net box, the molecular sieve desiccant and the air inlet, when the brake air chamber is installed, the treatment box is fixed to the air inlet through the first connecting pipe, the net box is fixed to the magnetic attraction block on the inner wall of the treatment box in a magnetic attraction mode, and when an automobile brakes, compressed air enters the treatment box through the air pipe; compressed air is divided into a plurality of air flows by the plurality of flow dividing grooves in the net box, the air flows are dispersed and then penetrate through the flow dividing grooves to be in contact with the net box, then during flowing, the air flows are dried by the molecular sieve drying agent in the net box, water vapor is absorbed, and the dried air flows enter the brake air chamber shell through the air inlet.

Description

Technical Field

[0001] The invention relates to the technical field of brakes, and in particular to an air circuit device for assisting a gas brake vehicle in controlling the brakes. Background Art

[0002] ‌Air brake‌ is a type of automobile braking method that relies on compressed air to generate braking force. It is commonly used in large vehicles that require strong braking force, such as commercial trucks and heavy machinery. Medium and heavy-duty vehicles frequently use the main brake under conditions such as going down a long slope, which will cause the thermal load of the braking system to be very large, and the braking system cannot release the heat to the surrounding environment in time, causing the brake drum and brake shoe to overheat and wear quickly, causing the main brake to lose part or all of its braking efficiency, which will seriously affect the continuous braking efficiency of the main braking system, thereby affecting the safety of braking. The use of auxiliary braking devices can reduce the frequency of use of the main braking system and reduce a series of problems such as excessive brake temperature, reduced efficiency, and severe wear caused by continuous use of the brakes. Therefore, the application of auxiliary braking devices is becoming more and more extensive. The air circuit structure of auxiliary air brake vehicles generally includes air compressors, brake air chambers, protection valves, relay valves, brake valves, air storage tanks, air pressure pipelines, etc., among which the brake air chamber is an important component of the automobile braking system.

[0003] In the existing brake air chamber in the air circuit structure used for automobile brakes, when the gas enters the air chamber, it is easy to entrain water vapor. Multiple accumulation of water vapor can easily cause damage to the diaphragm and reduce its service life. Therefore, there is an urgent need for an air circuit device that assists in controlling the brakes of automobile brake vehicles. Summary of the invention

[0004] The purpose of the present invention is to provide an air circuit device for assisting vehicle brake control in order to solve the problems that when existing gas enters the air chamber, it is easy to entrain water vapor, and water vapor accumulates multiple times, which easily causes damage to the diaphragm and reduces its service life; the concentricity of the brake air chamber and the push rod is easy to deviate after a period of time. After the deviation occurs, the push rod pushes easily to cause errors; and the brake air chamber is exposed to the outside and is easily affected by high and low temperatures and hit by road objects, thereby causing damage.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an air circuit device for controlling the brakes of an auxiliary steam brake vehicle, comprising a shell, a sealing cover is provided on one side of the shell, and an air inlet is connected to the other side of the shell, a diaphragm is connected to the inside of the shell, and a protective structure is provided on the outside of the shell, a drying structure is provided on the outside of the air inlet, a supporting plate is fixed on the diaphragm, and a limiting structure is provided at the rear end of the supporting plate.

[0006] The drying structure includes a first connecting tube, a processing box is arranged at the end of the first connecting tube, a magnetic block is arranged on the inner wall of the processing box, and a movable cover is engaged with one side of the processing box, a mesh box is fixed on one side of the magnetic block, a diversion groove is opened on the inner side of the mesh box, and a molecular sieve desiccant is arranged inside the mesh box.

[0007] The limiting structure includes a telescopic rod, a limiting sleeve is arranged at the end of the telescopic rod, a sliding rod is movably engaged with the inner side of the limiting sleeve, a clamping seat is movably engaged with the inner side of the sealing cover, an air cushion is arranged on the outer wall of the clamping seat, and a ball is movably arranged on the inner side of the clamping seat.

[0008] The protection structure includes a protection box, a cover plate is connected to the front end of the protection box, and a pressure-resistant frame is arranged on the inner side of the protection box, a mounting frame is fixed to the outer wall of the protection box, an inner side of the pressure-resistant frame is connected to an inner protection cover, and a mounting seat is arranged on the inner wall of the inner protection cover.

[0009] Preferably, flanges are provided on the outer walls of the shell and the sealing cover, and the shell and the sealing cover are sealed and fixedly connected via the flange, a push rod is fixed to the end of the supporting plate, a return spring is provided on the outer side of the push rod, and a connecting fork is fixed to one side of the push rod, a limiting seat is provided at the end of the return spring, the limiting seat is fixedly installed on the inner wall of the sealing cover, and the two ends of the return spring are respectively fixedly connected to the supporting plate and the limiting seat.

[0010] Preferably, the end of the movable cover is connected to a second connecting pipe, the processing box is fixedly connected to the air inlet via a first connecting pipe, and the movable cover is movably connected to the processing box via threads.

[0011] Preferably, the net box and the processing box are fixed by magnetic attraction and snap engagement of a magnetic attraction block, and the number of the diversion slots is twelve.

[0012] Preferably, the telescopic rod is fixedly mounted on the inner wall of the shell, the limiting sleeve is movably connected to the sliding rod, the ball is fitted on the outer wall of the push rod, and the number of the clamping seat, the air cushion and the ball is four.

[0013] Preferably, the slide rod is fixedly connected to the support plate, a contraction groove matching the clamping seat is provided on the inner side of the sealing cover, and the clamping seat and the contraction groove are fixedly connected via an air cushion.

[0014] Preferably, the protection box is fixedly mounted on the automobile drive axle via a mounting frame, and the housing and the protection box are fixedly mounted via a mounting seat and bolts.

[0015] Preferably, the cover plate and the protection box are fixedly installed by means of locks, and the two ends of the pressure-resistant frame are fixedly connected to the protection box and the inner protection cover respectively.

[0016] Compared with the prior art, the present invention has the following beneficial effects: First, the present invention sets a treatment box, a mesh box, a molecular sieve desiccant and an air inlet. When the brake air chamber is installed, the treatment box is first fixed to the air inlet through a first connecting pipe, and the mesh box is magnetically fixed to the magnetic block on the inner wall of the treatment box. When the car brakes, compressed air enters the treatment box through the air pipe, and the compressed air is divided into several air flows by a plurality of diverter grooves on the mesh box. After the air flow is dispersed, it passes through the diverter grooves and contacts the mesh box. Then, when it flows, it is dried by the molecular sieve desiccant inside the mesh box to absorb water vapor. Then, the dry air flow enters the interior of the brake air chamber shell through the air inlet.

[0017] Second, the present invention provides a limiting sleeve, a sliding rod, a clamping seat, a ball and an air cushion. The compressed air increases continuously, which will push the supporting plate and the diaphragm to one side. When the supporting plate moves, it drives the push rod to extend and squeeze the return spring, so that after the push rod is subjected to force, it drives the adjusting arm to move through the connecting fork. The adjusting arm brakes the cam and presses the brake shoe friction plate against the brake drum to produce a braking effect and achieve braking. When the supporting plate moves, it drives the sliding rod at the rear end to slide in the limiting sleeve to limit the movement of the supporting plate. At the same time, when the push rod moves, four clamping seats are arranged on the inner side of the sealing cover. Under the elastic support of the end air cushion, the balls on the inner side of the clamping seat are always tightly fitted to the outer wall of the push rod. The four balls play the function of limiting support, so the push rod and the supporting plate are both limited in movement, thereby preventing the problem of concentricity deviation between the push rod and the housing.

[0018] Third, the present invention provides a protective box, a cover plate, a pressure-resistant frame and an inner protective cover. Before the brake air chamber housing is installed on the automobile drive axle, a protective structure is provided on it, the housing is installed inside the protective box through a mounting seat, and the push rod passes through the outside of the protective box, and then the cover plate and the protective box are sealed and fixed by a lock, so that the housing is in a relatively sealed environment. At this time, the protective box is fixed to the drive axle through the mounting frame on the outer wall, so that the brake air chamber is installed and fixed. The fixed protective box protects the brake air chamber housing from dust, rain and snow, and the pressure-resistant frame between the housing and the inner protective cover has a pressure-resistant and reduced pressure function against external impact force, thereby avoiding adverse effects of the impact on the housing. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a cross-sectional structural schematic diagram of the present invention; Figure 3 It is a schematic diagram of the inner protective cover of the present invention; Figure 4 It is a schematic diagram of the drying structure of the present invention; Figure 5 It is a schematic diagram of the diversion trough of the present invention; Figure 6 It is a schematic diagram of the slide bar of the present invention; Figure 7 It is a schematic diagram of the limiting sleeve of the present invention; Figure 8 It is a schematic diagram of the clamping seat of the present invention; Fig. 9 It is a schematic diagram of the protection structure of the present invention; Fig.10 It is a schematic diagram of a compression frame of the present invention.

[0020] In the figure: 1. shell; 2. flange; 3. sealing cover; 4. air inlet; 5. drying structure; 501. first connecting pipe; 502. processing box; 503. movable cover; 504. second connecting pipe; 505. magnetic block; 506. mesh box; 507. molecular sieve desiccant; 508. diverter trough; 6. supporting plate; 7. diaphragm; 8. limiting structure; 801. telescopic rod; 802. limiting sleeve; 803. sliding rod; 804. clamping seat; 805. air cushion; 806. ball; 9. push rod; 10. return spring; 11. limiting seat; 12. connecting fork; 13. protection structure; 1301. protection box; 1302. cover plate; 1303. mounting frame; 1304. mounting seat; 1305. inner protective cover; 1306. pressure-resistant frame. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1-Figure 5, an air circuit device for controlling the brake of an auxiliary vehicle, comprising a housing 1, a sealing cover 3 is arranged on one side of the housing 1, and an air inlet 4 is connected to the other side of the housing 1, a diaphragm 7 is connected to the inside of the housing 1, and a protective structure 13 is arranged on the outside of the housing 1, a drying structure 5 is arranged on the outside of the air inlet 4, a supporting plate 6 is fixed on the diaphragm 7, a limiting structure 8 is arranged at the rear end of the supporting plate 6, the drying structure 5 comprises a first connecting pipe 501, a processing box 502 is arranged at the end of the first connecting pipe 501, a magnetic block 505 is arranged on the inner wall of the processing box 502, and a magnetic block 505 is arranged on one side of the processing box 502 A movable cover 503 is engaged with the side of the support plate 6, a net box 506 is fixed on one side of the magnetic suction block 505, a diversion groove 508 is opened on the inner side of the net box 506, and a molecular sieve desiccant 507 is arranged inside the net box 506, the outer walls of the shell 1 and the sealing cover 3 are both provided with flanges 2, and the shell 1 and the sealing cover 3 are sealed and fixedly connected through the flange 2, a push rod 9 is fixed to the end of the support plate 6, a return spring 10 is arranged on the outer side of the push rod 9, and a connecting fork 12 is fixed to one side of the push rod 9, a limit seat 11 is arranged at the end of the return spring 10, and the limit seat 11 is fixedly installed with the inner wall of the sealing cover 3, and the return spring 10 is fixed to the inner wall of the sealing cover 3. The two ends of the spring 10 are fixedly connected to the support plate 6 and the limit seat 11 respectively, the end of the movable cover 503 is connected to the second connecting pipe 504, the processing box 502 is fixedly connected to the air inlet 4 through the first connecting pipe 501, the movable cover 503 is movably connected to the processing box 502 through a thread, the net box 506 is fixed to the processing box 502 through the magnetic block 505, and the number of the diverter slots 508 is twelve. When installing the brake air chamber, first fix the first connecting pipe 501 on one side of the processing box 502 to the air inlet 4, and then fix the net box 506 to the magnetic block on the inner wall of the processing box 502. 505 is fixed by magnetic attraction. After fixed installation, the movable cover 503 is screwed and fixed to the processing box 502 by threads. After fixation, the air pipe is fixedly connected to the second connecting pipe 504. When the car brakes, the compressed air enters the processing box 502 through the air pipe, and the compressed air is divided into several air flows by the multiple branch grooves 508 on the mesh box 506. After the air flow is dispersed, it passes through the branch grooves 508 and contacts with the mesh box 506. Then, when flowing, it is dried by the molecular sieve desiccant 507 inside the mesh box 506 to absorb water vapor. Then, the dry air flow enters the interior of the brake air chamber housing 1 through the air inlet 4.

[0023] See also Figure 6-Figure 8, an air circuit device for controlling the brakes of auxiliary steam brake vehicles, the limiting structure 8 includes a telescopic rod 801, a limiting sleeve 802 is provided at the end of the telescopic rod 801, a sliding rod 803 is movably engaged with the inner side of the limiting sleeve 802, a clamping seat 804 is movably engaged with the inner side of the sealing cover 3, an air cushion 805 is provided on the outer wall of the clamping seat 804, and a ball 806 is movably provided on the inner side of the clamping seat 804, the telescopic rod 801 is fixedly installed on the inner wall of the shell 1, the limiting sleeve 802 is movably sleeved with the sliding rod 803, the ball 806 is fitted with the outer wall of the push rod 9, and the number of the clamping seat 804, the air cushion 805 and the ball 806 is four, the sliding rod 803 is fixedly connected to the supporting plate 6, a contraction groove matching the clamping seat 804 is opened on the inner side of the sealing cover 3, and the clamping seat 804 is fixedly connected to the contraction groove through the air cushion 805, compressed air When the force increases continuously, the supporting plate 6 and the diaphragm 7 are pushed to one side. When the supporting plate 6 moves, the push rod 9 is extended and the return spring 10 is squeezed, so that the push rod 9 is forced to drive the adjusting arm to move through the connecting fork 12. The adjusting arm brakes the cam and presses the brake shoe friction plate to the brake drum to produce a braking effect and realize braking. When the supporting plate 6 moves, the sliding rod 803 at the rear end is driven to slide in the limiting sleeve 802 to limit the movement of the supporting plate 6. At the same time, when the push rod 9 moves, four clamping seats 804 are arranged on the inner side of the sealing cover 3. Under the elastic support of the end air cushion 805, the ball 806 on the inner side of the clamping seat 804 is always tightly fitted to the outer wall of the push rod 9. The four ball 806 play the function of limiting support. Then the push rod 9 and the supporting plate 6 are limited in movement, thereby preventing the concentricity deviation between the push rod 9 and the housing 1.

[0024] See also Figure 9-10, an air circuit device for controlling the brakes of an auxiliary steam brake vehicle, the protective structure 13 includes a protective box 1301, the front end of the protective box 1301 is connected to a cover plate 1302, and the inner side of the protective box 1301 is provided with a pressure-resistant frame 1306, the outer wall of the protective box 1301 is fixed with a mounting frame 1303, the inner side of the pressure-resistant frame 1306 is connected to an inner protective cover 1305, and the inner wall of the inner protective cover 1305 is provided with a mounting seat 1304, the protective box 1301 is fixedly installed with the automobile drive axle through the mounting frame 1303, and the shell 1 and the protective box 1301 are fixedly installed through the mounting seat 1304 and bolts, the cover plate 1302 and the protective box 1301 are fixedly installed through a lock, and the two ends of the pressure-resistant frame 1306 are respectively connected to the protective box 1301 and the inner protective cover 130 5 is fixedly connected. Before the brake air chamber housing 1 is installed with the automobile drive axle, a protective structure 13 is arranged thereon, the housing 1 is installed inside the protective box 1301 through the mounting seat 1304, and the push rod 9 penetrates to the outside of the protective box 1301, and then the cover plate 1302 and the protective box 1301 are sealed and fixed by a lock, so that the housing 1 is in a relatively sealed environment. At this time, the protective box 1301 is fixed to the drive axle through the mounting frame 1303 on the outer wall, so that the brake air chamber is installed and fixed. The fixed protective box 1301 protects the brake air chamber housing 1 from dust, rain and snow, and the pressure-resistant frame 1306 between the housing 1 and the internal protective cover 1305 has a pressure-resistant and mitigating function against external impact force, thereby avoiding the adverse effect of the impact on the housing 1.

[0025] Working principle: When the present invention is used, when the brake air chamber is installed, the first connecting pipe 501 on one side of the processing box 502 is first fixedly connected to the air inlet 4, and then the net box 506 is magnetically fixed to the magnetic block 505 on the inner wall of the processing box 502. After the fixed installation, the movable cover 503 is screwed and fixed to the processing box 502 by screw thread. After the fixation, the air pipe is fixedly connected to the second connecting pipe 504. When the car brakes, the compressed air enters the processing box 502 through the air pipe, and the compressed air is divided into several air flows by the multiple diverter grooves 508 on the net box 506. After the air flow is dispersed, it passes through the diverter grooves 508 and then connects with the net box 506. The air in the air box 506 contacts the mesh box 506, and then when it flows, it is dried by the molecular sieve desiccant 507 inside the mesh box 506 to absorb water vapor, and the dry airflow enters the interior of the brake air chamber housing 1 through the air inlet 4. The compressed air continues to increase, which will push the support plate 6 and the diaphragm 7 to one side. When the support plate 6 moves, it drives the push rod 9 to extend and squeeze the return spring 10, so that the push rod 9 drives the adjustment arm to move through the connecting fork 12 after being stressed, and the adjustment arm brakes the cam, presses the brake shoe friction plate to the brake drum, produces a braking effect, and realizes braking. When the support plate 6 moves, it drives the sliding rod 803 at the rear end to limit The sleeve 802 slides in the support plate 6 to limit the movement of the support plate 6. At the same time, when the push rod 9 moves, four clamping seats 804 are arranged on the inner side of the sealing cover 3. Under the elastic support of the end air cushion 805, the inner ball 806 of the clamping seat 804 is always tightly fitted to the outer wall of the push rod 9. The four balls 806 play the function of limiting support. Then the push rod 9 and the support plate 6 are limited in movement, thereby preventing the concentricity deviation between the push rod 9 and the housing 1. Before the brake air chamber housing 1 is installed with the automobile drive axle, a protective structure 13 is arranged on it, and the housing 1 is installed on the protective structure through the mounting seat 1304. The inside of the protective box 1301, and the push rod 9 passes through the outside of the protective box 1301, and then the cover plate 1302 and the protective box 1301 are sealed and fixed by locking buckles, so that the shell 1 is in a relatively sealed environment. At this time, the protective box 1301 is fixed on the drive axle through the mounting frame 1303 on the outer wall, so that the brake air chamber is installed and fixed. The fixed protective box 1301 protects the brake air chamber shell 1 from dust, rain and snow, and the pressure-resistant frame 1306 between the shell 1 and the internal protective cover 1305 has a pressure-resistant and reduced pressure function against external impact force, thereby avoiding the impact on the shell 1. The adverse effect.

[0026] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. An air circuit device for assisting a vehicle with a gas brake to control braking, comprising a housing (1), characterized in that: A sealing cover (3) is provided on one side of the shell (1), and an air inlet (4) is connected to the other side of the shell (1); a diaphragm (7) is connected to the inside of the shell (1), and a protective structure (13) is provided on the outside of the shell (1); a drying structure (5) is provided on the outside of the air inlet (4); a supporting plate (6) is fixed on the diaphragm (7), and a limiting structure (8) is provided at the rear end of the supporting plate (6); The drying structure (5) comprises a first connecting tube (501), a processing box (502) is arranged at the end of the first connecting tube (501), a magnetic block (505) is arranged on the inner wall of the processing box (502), a movable cover (503) is engaged on one side of the processing box (502), a net box (506) is fixed on one side of the magnetic block (505), a diversion groove (508) is provided on the inner side of the net box (506), and a molecular sieve desiccant (507) is arranged inside the net box (506); The limiting structure (8) comprises a telescopic rod (801), a limiting sleeve (802) is arranged at the end of the telescopic rod (801), a sliding rod (803) is movably engaged on the inner side of the limiting sleeve (802), a clamping seat (804) is movably engaged on the inner side of the sealing cover (3), an air cushion (805) is arranged on the outer wall of the clamping seat (804), and a ball (806) is movably arranged on the inner side of the clamping seat (804); The protection structure (13) comprises a protection box (1301), the front end of the protection box (1301) is connected to a cover plate (1302), and a pressure-resistant frame (1306) is arranged on the inner side of the protection box (1301), a mounting frame (1303) is fixed to the outer wall of the protection box (1301), the inner side of the pressure-resistant frame (1306) is connected to an inner protection cover (1305), and a mounting seat (1304) is arranged on the inner wall of the inner protection cover (1305).

2. The air circuit device for assisting the control of brakes of a vehicle with a gas brake according to claim 1, characterized in that: The outer walls of the shell (1) and the sealing cover (3) are both provided with flanges (2), and the shell (1) and the sealing cover (3) are sealed and fixedly connected via the flanges (2); a push rod (9) is fixed to the end of the support plate (6); a return spring (10) is provided on the outer side of the push rod (9), and a connecting fork (12) is fixed to one side of the push rod (9); a limit seat (11) is provided at the end of the return spring (10); the limit seat (11) is fixedly mounted on the inner wall of the sealing cover (3), and the two ends of the return spring (10) are respectively fixedly connected to the support plate (6) and the limit seat (11).

3. The air circuit device for assisting the control of brakes of a vehicle with a gas brake according to claim 1, characterized in that: The end of the movable cover (503) is connected to a second connecting pipe (504), the processing box (502) and the air inlet (4) are fixedly connected via the first connecting pipe (501), and the movable cover (503) and the processing box (502) are movably connected via threads.

4. The air circuit device for assisting the control of brakes of a vehicle with a gas brake according to claim 1, characterized in that: The net box (506) and the processing box (502) are fixed by magnetic engagement via a magnetic block (505), and the number of the diversion slots (508) is twelve.

5. The air circuit device for assisting the control of brakes of a vehicle with a gas brake according to claim 2, characterized in that: The telescopic rod (801) is fixedly mounted on the inner wall of the housing (1), the limiting sleeve (802) is movably sleeved on the sliding rod (803), the ball (806) is fitted on the outer wall of the push rod (9), and the number of the clamping seat (804), the air cushion (805) and the ball (806) is four.

6. The air circuit device for assisting the control of brakes of a vehicle with a gas brake according to claim 1, characterized in that: The sliding rod (803) is fixedly connected to the supporting plate (6), a contraction groove matching the clamping seat (804) is provided on the inner side of the sealing cover (3), and the clamping seat (804) and the contraction groove are fixedly connected via an air cushion (805).

7. The air circuit device for assisting the control of brakes of a vehicle with a gas brake according to claim 1, characterized in that: The protection box (1301) is fixedly mounted on the vehicle drive axle via a mounting frame (1303), and the housing (1) and the protection box (1301) are fixedly mounted via a mounting seat (1304) and bolts.

8. The air circuit device for assisting the control of brakes of a vehicle with a gas brake according to claim 1, characterized in that: The cover plate (1302) and the protection box (1301) are fixedly installed via a lock, and the two ends of the pressure-resistant frame (1306) are respectively fixedly connected to the protection box (1301) and the inner protection cover (1305).

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