Air path structure for assisting pneumatic brake vehicle to control braking

Abstract

The utility model relates to the technical field of braking, and discloses a gas circuit structure for assisting a steam brake vehicle to control braking. The air path structure assisting the pneumatic brake vehicle to control braking comprises an upper valve assembly, a lower valve assembly is arranged at the bottom end of the upper valve assembly, and a mounting plate is arranged at the top end of the upper valve assembly. Through the arrangement of the movable sleeve, the supporting sleeve and the folding cover, when a driver slightly steps on the pedal, the pedal drives the connecting plate and the connecting rod to move downwards after being stressed, the connecting plate drives the rubber sheet and the movable sleeve to move downwards, and the movable sleeve can be inserted into the annular groove to be folded after completely moving downwards; meanwhile, the folding cover at the bottom end of the connecting plate moves downwards and is folded along with movement of the connecting rod, the movable sleeve, the supporting sleeve and the folding cover are all arranged on the outer side of the connecting rod and located below the pedal, dust can be effectively prevented from entering the upper valve assembly through a gap between the connecting rod and the upper valve assembly, and dual dust prevention is achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to brake braking technical field, concretely is a kind of air path structure of auxiliary steam brake vehicle control brake. BACKGROUND

[0002] ‌Air brake‌ is a kind of automobile brake mode that relies on compressed air to generate braking force, commonly seen in large vehicles that require strong braking force, such as commercial trucks and heavy machinery, and the use of main brake in long downhill and other working conditions of medium and heavy vehicles will make the thermal load of brake system very large, and the brake system cannot release heat to the surrounding environment in time, which makes the temperature of brake drum and brake shoe too high and wears out quickly, so that the main brake loses part or all of its braking efficiency, which seriously affects the efficiency of continuous braking of the main brake system, thereby affecting the safety of braking, and the use of auxiliary brake device can reduce the use frequency of main brake system, reduce the high temperature of brake due to continuous use, and reduce a series of problems such as efficiency decline and serious wear, therefore, the application of auxiliary brake device is more and more widely, the air path structure of auxiliary air brake vehicle generally includes air compressor, protection valve, relay valve, brake valve, air tank, air pressure pipeline, etc., wherein the brake valve is divided into air brake valve and hydraulic brake valve.

[0003] The brake valve in the existing air path structure for air brake vehicle has a foldable black folding cover on the outside of its connecting rod and at the bottom end of the pedal during operation to prevent dust, but the folding cover is prone to cracking after long-term use due to wear and aging, which causes dust to enter the interior of the brake valve, therefore, there is an urgent need for an air path structure for auxiliary steam brake vehicle control brake. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an air path structure for auxiliary steam brake vehicle control brake to solve the problem of cracking of the dustproof folding cover after long-term use due to wear and aging, which causes dust to enter the interior of the brake valve and the poor sealing effect of the connection part between the brake valve and air pipe, and the problem of air leakage.

[0005] To solve the above technical problems, the utility model provides the following technical scheme: an air path structure for auxiliary steam brake vehicle control brake, comprising an upper valve assembly, a lower valve assembly is arranged at the bottom end of the upper valve assembly, an installation plate is arranged at the top end of the upper valve assembly, a first air inlet and a first air outlet are respectively connected to the two sides of the upper valve assembly, a sealing structure is arranged on the first air inlet, a dustproof structure is arranged at the top end of the installation plate, a rotating seat is arranged on one side of the dustproof structure, a pedal is movably arranged at the top end of the rotating seat, and a rotating frame is arranged on one side of the rotating seat.

[0006] The dustproof structure comprises a supporting sleeve, a movable sleeve is sleeved at the outer side of the supporting sleeve, a rubber sheet is connected to the inner wall of the movable sleeve, an annular groove is formed in the top of the mounting plate, and a folding cover is connected to the top end of the mounting plate.

[0007] The sealing structure comprises a first mounting head, a threaded sleeve is connected to one side of the first mounting head, a clamping sleeve is sleeved at the outer side of the first mounting head, the outer side of the threaded sleeve is clamped with a second mounting head, a sealing ring is connected to the outer wall of the threaded sleeve, and an air pipe is arranged at one side of the second mounting head.

[0008] Preferably, the bottom end of the rotating frame is fixed with a connecting rod, a pressing spring is arranged at the outer side of the connecting rod, and a piston is mounted at the bottom end of the connecting rod, a channel is formed in the piston, and an upward spring is connected to the bottom end of the piston, the two sides of the lower valve assembly are respectively connected with a second air inlet and a second air outlet, and the bottom end of the lower valve assembly is provided with an exhaust guide seat.

[0009] Preferably, the pedal and the mounting plate are movably connected through a rotating seat, the top end of the connecting rod is provided with a connecting plate, and the pedal and the connecting rod are movably connected through the rotating frame and the connecting plate, the inside of the upper valve assembly is provided with a spring seat matched with the connecting rod, and the two ends of the pressing spring are fixedly connected with the connecting plate and the spring seat respectively, and the channel is matched in size with the second air inlet and the second air outlet.

[0010] Preferably, the supporting sleeve is fixed at the top end of the mounting plate, and a sliding groove is formed in the outer wall of the supporting sleeve, a sliding block is fixed to the inner wall of the movable sleeve, and the movable sleeve and the supporting sleeve are movably connected through the sliding block and the sliding groove.

[0011] Preferably, the inner side of the rubber sheet is provided with a mounting groove matched with the connecting plate, and the rubber sheet and the connecting rod are fixedly connected through the mounting groove, the connecting plate and the glue, the two ends of the folding cover are fixedly connected with the connecting plate and the mounting plate respectively, and the movable sleeve is movably clamped with the annular groove.

[0012] Preferably, the first air inlet, the first air outlet, the second air inlet and the second air outlet are all provided with a sealing structure, a thread is formed in the outer wall of the first mounting head, and the clamping sleeve is movably connected with the first mounting head through the thread.

[0013] Preferably, the second mounting head and the first mounting head are fixedly connected through the threaded sleeve, and the sealing ring is located at the connecting gap between the first mounting head and the second mounting head.

[0014] Compared with the prior art, the present application has the following advantages:

[0015] Compared with the prior art, the present application has the following advantages:First, the utility model discloses a folding cover, support sleeve and folding cover are set up, and the driver light presses the pedal, and the pedal is forced to drive the connecting plate and the connecting rod to move down, and the connecting plate drives the rubber sheet and the movable sleeve to move down, and the movable sleeve can be inserted into the annular groove to fold after moving down completely, and the folding cover at the bottom of the connecting plate also moves down and folds along with the activity of the connecting rod, and the movable sleeve, support sleeve and folding cover are all set up on the outside of the connecting rod and below the pedal, which can effectively prevent dust from entering the inside of the upper valve assembly through the gap between the connecting rod and the upper valve assembly, realizing double dustproof.

[0016] Second, the utility model discloses a sealing ring, clamping sleeve, first mounting head and threaded sleeve are set up, and the sealing ring is sleeved on the outer wall of the threaded sleeve in advance, and then four second mounting heads are fixedly connected through the threaded sleeve and the first mounting head on the first gas outlet, second gas outlet, first air inlet and second air inlet, and the sealing ring is located at the connecting gap between the first mounting head and the second mounting head, then the clamping sleeve is screwed, and the clamping sleeve rotates on the outer wall of the first mounting head through the thread, and moves to the side of the sealing ring through rotation, and the clamping sleeve continuously extrudes the sealing ring, so that the sealing ring is extruded and extends to both sides, thereby filling the entire gap at the connecting place of the first mounting head and the second mounting head, and the gap is filled, so that the sealing property of the gap can be enhanced, and gas leakage can be prevented when the gas circuit is operated. DRAWINGS

[0017] Figure 1 It is the whole structure schematic diagram of the utility model;

[0018] Figure 2 It is the right section structure schematic diagram of the utility model;

[0019] Figure 3 It is the dustproof structure schematic diagram of the utility model;

[0020] Figure 4 It is the movable sleeve schematic diagram of the utility model;

[0021] Figure 5 It is the rubber sheet schematic diagram of the utility model;

[0022] Figure 6 It is the sliding block schematic diagram of the utility model;

[0023] Figure 7 It is the sealing structure schematic diagram of the utility model;

[0024] Figure 8 It is the clamping sleeve structure schematic diagram of the utility model.

[0025] Wherein: 1, upper valve assembly; 2, lower valve assembly; 3, mounting plate; 4, rotating seat; 5, pedal; 6, rotating frame; 7, dustproof structure; 701, support sleeve; 702, movable sleeve; 703, rubber sheet; 704, sliding block; 705, annular groove; 706, folding cover; 8, connecting rod; 9, pressing spring; 10, piston; 11, upper spring; 12, channel; 13, first air outlet; 14, second air outlet; 15, first air inlet; 16, second air inlet; 17, sealing structure; 1701, first mounting head; 1702, threaded sleeve; 1703, second mounting head; 1704, sealing ring; 1705, clamping sleeve; 18, air pipe; 19, exhaust guide seat. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0027] Please refer to Figures 1-6The utility model provides an air path structure of auxiliary steam brake vehicle control brake, including upper valve assembly 1, the bottom of upper valve assembly 1 is provided with lower valve assembly 2, and the top of upper valve assembly 1 is provided with mounting plate 3, and the both sides of upper valve assembly 1 are connected with first air outlet 13, second air outlet 14 respectively, and the top of mounting plate 3 is provided with dustproof structure 7, one side of dustproof structure 7 is provided with rotating seat 4, the top of rotating seat 4 is movably provided with pedal 5, and one side of rotating seat 4 is provided with rotating frame 6, dustproof structure 7 includes support sleeve 701, the outer side of support sleeve 701 is sleeved with movable sleeve 702, the inner wall of movable sleeve 702 is connected with rubber sheet 703, the top of mounting plate 3 is provided with annular groove 705, and the top of mounting plate 3 is connected with folding cover 706, the bottom of rotating frame 6 is fixed with connecting rod 8, the outer side of connecting rod 8 is provided with down spring 9, and the bottom of connecting rod 8 is provided with piston 10, the bottom of piston 10 is connected with upper spring 11, the both sides of lower valve assembly 2 are connected with first air inlet 15, second air inlet 16 respectively, and the bottom of lower valve assembly 2 is provided with exhaust guide seat 19, pedal 5 is movably connected with mounting plate 3 through rotating seat 4, the top of connecting rod 8 is provided with connecting plate, and pedal 5 is movably connected with connecting rod 8 through rotating frame 6 and connecting plate, the inside of upper valve assembly 1 is provided with spring seat matched with connecting rod 8, and the both ends of down spring 9 are fixedly connected with connecting plate and spring seat, the size of channel 12 is matched with first air inlet 15 and second air inlet 16, support sleeve 701 is fixed at the top of mounting plate 3, the outer wall of support sleeve 701 is provided with sliding slot, the inner wall of movable sleeve 702 is fixedly provided with sliding block 704, and movable sleeve 702 is movably connected with support sleeve 701 through sliding block 704 and sliding slot, the inside of rubber sheet 703 is provided with installation groove matched with connecting plate, and rubber sheet 703 is fixedly connected with connecting rod 8 through installation groove, connecting plate and glue, the both ends of folding cover 706 are fixedly connected with connecting plate and mounting plate 3, movable sleeve 702 is movably connected with annular groove 705, when needing brake during the car driving, the driver slightly treads pedal 5, pedal 5 is forced to rotate to one side through rotating seat 4, and falls gradually when rotating, and the connecting plate and connecting rod 8 are extruded through the rotating frame 6 at the bottom when falling, simultaneously, the connecting plate drives rubber sheet 703 and movable sleeve 702 to move downwards, so that movable sleeve 702 moves downwards through sliding block 704 and sliding slot on the outer wall of support sleeve 701, movable sleeve 702 can be inserted into annular groove 705 to fold after moving downwards completely, simultaneously, the folding cover 706 at the bottom of connecting plate also moves downwards and folds along with the movement of connecting rod 8, movable sleeve 702, support sleeve 701 and folding cover 706 are all arranged on the outer side of connecting rod 8 and below pedal 5, can effectively prevent dust from entering the inside of upper valve assembly 1 through the gap between connecting rod 8 and upper valve assembly 1, realizes double dustproof,And the active sleeve 702, support sleeve 701 can protect the rubber folding cover 706, increase the service life of folding cover 706.

[0028] Please refer to Figures 7-8 A kind of auxiliary steam brake vehicle control brake air path structure, the sealing structure 17 includes first mounting head 1701, one side of first mounting head 1701 is connected with threaded sleeve 1702, and the outer side of first mounting head 1701 is sleeved with clamping sleeve 1705, the outer side of threaded sleeve 1702 is clamped with second mounting head 1703, and the outer wall of threaded sleeve 1702 is connected with sealing ring 1704, one side of second mounting head 1703 is provided with air pipe 18, first gas outlet 13, second gas outlet 14, first gas inlet 15 and second gas inlet 16 are all provided with sealing structure 17, the outer wall of first mounting head 1701 is provided with thread, and clamping sleeve 1705 is movably connected with first mounting head 1701 by thread, second mounting head 1703 is fixed with first mounting head 1701 by threaded sleeve 1702, sealing ring 1704 is located at the connecting gap of first mounting head 1701 and second mounting head 1703, first mounting head 1701 on threaded sleeve 1702 is sleeved with sealing ring 1704 in advance, then four second mounting heads 1703 are fixedly connected with first mounting head 1701 on first gas outlet 13, second gas outlet 14, first gas inlet 15 and second gas inlet 16 by threaded sleeve 1702, so that the end of first gas outlet 13, second gas outlet 14, first gas inlet 15 and second gas inlet 16 is connected with air pipe 18, at this time, sealing ring 1704 is located at the connecting gap of first mounting head 1701 and second mounting head 1703, then clamping sleeve 1705 is screwed, clamping sleeve 1705 is rotated on the outer wall of first mounting head 1701 by thread, moves to the side of sealing ring 1704 by rotating, clamping sleeve 1705 constantly extrudes sealing ring 1704, so that sealing ring 1704 is extruded and extends to both sides, to fill the entire gap of the connecting place of first mounting head 1701 and second mounting head 1703, fill the gap, so as to strengthen the sealing property of gap, prevent gas leakage when air path runs.

[0029] In use, the sealing ring 1704 is sleeved on the outer wall of the threaded sleeve 1702 in advance, and then the four second mounting heads 1703 are fixedly connected with the first mounting head 1701 on the first gas outlet 13, the second gas outlet 14, the first air inlet 15 and the second air inlet 16 through the threaded sleeve 1702, so that the end portions of the first gas outlet 13, the second gas outlet 14, the first air inlet 15 and the second air inlet 16 are all connected with the air pipe 18. At this time, the sealing ring 1704 is located at the connecting gap between the first mounting head 1701 and the second mounting head 1703, and then the clamping sleeve 1705 is screwed. The clamping sleeve 1705 rotates on the outer wall of the first mounting head 1701 through threads, moves to the side of the sealing ring 1704 by rotating, and continuously extrudes the sealing ring 1704. After the sealing ring 1704 is extruded, it extends to both sides, thereby filling the entire gap at the connection between the first mounting head 1701 and the second mounting head 1703, filling the gap, which can enhance the sealing performance of the gap and prevent gas leakage during the operation of the air path. When the car needs to brake during driving, the driver steps on the pedal 5 lightly. After the pedal 5 is stressed, it rotates to one side through the rotating seat 4 and gradually falls during rotation. When falling, the connecting plate and the connecting rod 8 are extruded through the rotating frame 6 at the bottom. At the same time, the connecting plate drives the rubber sheet 703 and the movable sleeve 702 to move downward, so that the movable sleeve 702 moves downward on the outer wall of the supporting sleeve 701 through the sliding block 704 and the sliding groove. After the movable sleeve 702 completely moves downward, it can be inserted into the annular groove 705 for folding. At the same time, the folding cover 706 at the bottom of the connecting plate also moves downward and folds with the movement of the connecting rod 8. The movable sleeve 702, the supporting sleeve 701 and the folding cover 706 are all arranged outside the connecting rod 8 and below the pedal 5, which can effectively prevent dust from entering the inside of the upper valve assembly 1 through the gap between the connecting rod 8 and the upper valve assembly 1, realize double dust prevention, and protect the folding cover 706 of rubber material through the movable sleeve 702 and the supporting sleeve 701, thereby increasing the service life of the folding cover 706. In the air path structure, the first air inlet 15 and the second air inlet 16 are connected with the gas tank, the first gas outlet 13 and the second gas outlet 14 are connected with the relay valve, the air compressor is connected with the brake pedal 5, and the piston 10 closes the first air inlet 15 and the second air inlet 16 when the pedal 5 is not stepped on. When the brake pedal 5 is stepped on, the connecting rod 8 drives the piston 10 to move downward, the channel 12 inside the piston 10 is aligned with the first air inlet 15 and the second air inlet 16 on both sides, so that the gas flows. The gas flows through the relay valve through the air pipe 18, the relay valve is opened, so that the gas flows to the brake chamber, the brake chamber converts the gas pressure into a mechanical action, the high-pressure gas pushes the diaphragm in the brake chamber to drive the lever to activate the brake, and then the brake is activated. When the piston 10 moves, the area of overlap between the channel 12 and the first air inlet 15 and the second air inlet 16 can be adjusted, thereby adjusting the brake strength.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An air path structure for assisting a vehicle control brake, comprising a valve assembly (1), characterized in that: The bottom end of the upper valve assembly (1) is provided with a lower valve assembly (2), and the top end of the upper valve assembly (1) is provided with a mounting plate (3), and the two sides of the upper valve assembly (1) are respectively connected with a first air outlet (13) and a second air outlet (14), the first air outlet (13) is provided with a sealing structure (17), the top end of the mounting plate (3) is provided with a dustproof structure (7), one side of the dustproof structure (7) is provided with a rotating seat (4), the top end of the rotating seat (4) is movably provided with a pedal (5), and one side of the rotating seat (4) is provided with a rotating frame (6). The dustproof structure (7) comprises a supporting sleeve (701), the outer side of the supporting sleeve (701) is sleeved with a movable sleeve (702), the inner wall of the movable sleeve (702) is connected with a rubber sheet (703), the top of the mounting plate (3) is provided with an annular groove (705), and the top of the mounting plate (3) is connected with a folding cover (706). The sealing structure (17) comprises a first mounting head (1701), one side of the first mounting head (1701) is connected with a threaded sleeve (1702), the outer side of the first mounting head (1701) is sleeved with a clamping sleeve (1705), the outer side of the threaded sleeve (1702) is clamped with a second mounting head (1703), the outer wall of the threaded sleeve (1702) is connected with a sealing ring (1704), and one side of the second mounting head (1703) is provided with an air pipe (18).

2. The air path structure for controlling the brake of an auxiliary steam brake vehicle according to claim 1, characterized in that: The bottom end of the rotating frame (6) is fixedly connected with a connecting rod (8), the outer side of the connecting rod (8) is provided with a pressing spring (9), the bottom end of the connecting rod (8) is provided with a piston (10), the piston (10) is provided with a channel (12), and the bottom end of the piston (10) is connected with an upper spring (11), the two sides of the lower valve assembly (2) are respectively connected with a first air inlet (15) and a second air inlet (16), and the bottom end of the lower valve assembly (2) is provided with an exhaust guide seat (19).

3. The air path structure for controlling the brake of an auxiliary steam brake vehicle according to claim 2, characterized in that: The pedal (5) and the mounting plate (3) are movably connected through the rotating seat (4), the top end of the connecting rod (8) is provided with a connecting plate, and the pedal (5) and the connecting rod (8) are movably connected through the rotating frame (6) and the connecting plate, the inside of the upper valve assembly (1) is provided with a spring seat matched with the connecting rod (8), and the two ends of the pressing spring (9) are fixedly connected with the connecting plate and the spring seat, respectively, and the channel (12) is matched in size with the first air inlet (15) and the second air inlet (16).

4. The air path structure for controlling the brake of an auxiliary steam brake vehicle according to claim 1, characterized in that: The supporting sleeve (701) is fixedly connected to the top end of the mounting plate (3), and the outer wall of the supporting sleeve (701) is provided with a sliding groove, the inner wall of the movable sleeve (702) is fixedly connected with a sliding block (704), and the movable sleeve (702) and the supporting sleeve (701) are movably connected through the sliding block (704) and the sliding groove.

5. The air path structure for controlling the brake of an auxiliary gas brake vehicle according to claim 1, characterized in that: The inner side of the rubber sheet (703) is provided with a mounting groove matched with the connecting plate, and the rubber sheet (703) is fixedly connected with the connecting rod (8) through the mounting groove, the connecting plate and the glue.

6. The air path structure for controlling the brake of an auxiliary steam brake vehicle according to claim 2, characterized in that: Sealing structures (17) are arranged on the first air outlet (13), the second air outlet (14), the first air inlet (15) and the second air inlet (16), a thread is formed in the outer wall of the first mounting head (1701), and the clamping sleeve (1705) is movably connected with the first mounting head (1701) through the thread.

7. The air path structure for controlling the brake of an auxiliary steam brake vehicle according to claim 1, characterized in that: The second mounting head (1703) is fixedly connected with the first mounting head (1701) through the threaded sleeve (1702), and the sealing ring (1704) is located at the connecting gap between the first mounting head (1701) and the second mounting head (1703).

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