Three-pipeline pneumatic brake trailer control system and tractor

Abstract

The utility model relates to a three-pipeline pneumatic brake trailer control system and a tractor, the three-pipeline pneumatic brake trailer control system comprises a pre-brake solenoid valve, a single-pipeline trailer valve, a double-pipeline trailer valve, a parking solenoid valve and a shuttle valve, an interface A4 is communicated with one end of an air inlet pipeline, an interface A16 is communicated with the air inlet pipeline, and an interface A17 is communicated with a black brake pipeline; the joint A1 is communicated with the joint A16 and the air inlet pipeline, the joint A2 is communicated with the joint A5, the joint A8 is communicated with the joint A10, and a pipeline communicated between the joint A8 and the joint A1 is communicated with one end of the red brake pipeline; the interface A9 is communicated with the interface A14, the interface A11 is communicated with the interface A13, and the interface A15 is communicated with one end of the yellow brake pipeline; and the yellow brake pipeline is communicated with a connector A18 on the single-pipeline trailer valve. The utility model has the advantages of compact structure, reasonable design, coexistence of a single pipeline and double pipelines, capability of being selected by users, meeting the requirements of pneumatic brake trailers, and convenience in use.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor trailer brakes, in particular to a three-pipeline air brake trailer control system and a tractor. Background Art

[0002] As tractor speeds increase, the demand for safer tractor brakes is also increasing. Currently, pneumatic trailer brakes in tractors are limited to single-line or dual-line systems, which cannot meet the existing tractor trailer braking requirements. This utility model studies a three-line pneumatic trailer brake system with excellent versatility, fast response time, excellent braking performance, and high safety. Utility Model Content

[0003] The utility model provides a three-pipeline air brake trailer control system and a tractor, aiming to solve the problems in the prior art.

[0004] The technical solution of the utility model to solve the above technical problems is as follows:

[0005] A three-line air brake trailer control system includes a pre-brake solenoid valve, a single-line trailer valve, a dual-line trailer valve, a parking solenoid valve, and a shuttle valve. The pre-brake solenoid valve is provided with interfaces A1, A2, and A3, and interface A2 can communicate with interface A1 or interface A3. The dual-line trailer valve is provided with interfaces A4, A5, A8, and A9, and interface A4 can communicate with interface A8 or interface A9. Interface A4 is connected to the valve core cavity inside the dual-line trailer valve.

[0006] The single-line trailer valve is provided with an interface A16 and an interface A17, and the interface A16 is connected or disconnected with the interface A17; the parking solenoid valve is provided with an interface A10, an interface A11 and an interface A12, and the interface A11 can be connected with the interface A10 or the interface A12; the shuttle valve is provided with an interface A13, an interface A14 and an interface A15, and the interface A13 is connected with the interface A14, and the interface A15 is connected with the pipeline connecting the interface A13 and the interface A14;

[0007] The interface A4 is connected to one end of the air intake pipe, the interface A16 is connected to the air intake pipe through a pipe, and the interface A17 is connected to the black brake pipe; the interface A1 is connected to the connection point between the interface A16 and the air intake pipe through a pipe, the interface A2 is connected to the interface A5 through a pipe, the interface A8 is connected to the interface A10 through a pipe, and the pipe connecting the interface A8 and the interface A1 is connected to one end of the red brake pipe; the interface A9 is connected to the interface A14 through a pipe, the interface A11 is connected to the interface A13 through a pipe, and the interface A15 is connected to one end of the yellow brake pipe; the yellow brake pipe is connected to the interface A18 on the single-line trailer valve that is connected to its internal valve cavity through a pipe.

[0008] The beneficial effects of the utility model are as follows: during operation, the principle of the single-line trailer is as follows: when the foot pedal is stepped on, the oil flows into the dual-line trailer valve, and at the same time the pre-brake solenoid valve is energized, the interface A5 is connected, and pre-loading is performed in advance. At this time, the air path flows to: interface A9, interface A14, interface A15, interface A18 and the black brake line, so that the black handshake joint is cut off and the trailer is braked;

[0009] The principle of a dual-line trailer is as follows: when driving, the parking solenoid valve is energized to release the trailer brake;

[0010] When the foot pedal is depressed, the oil flows into the dual-line trailer valve. At the same time, the pre-brake solenoid valve is energized, and interface A5 is connected to preload in advance. At this time, the air path is: interface A9, interface A14, interface A15 and the yellow brake line; the yellow handshake connector is connected to the air source, and the trailer is braked.

[0011] The utility model has a compact structure and a reasonable design, and a single pipeline + a double pipeline coexist, which can be selected by users, meets the needs of air brake trailers, and is easy to use.

[0012] On the basis of the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, it also includes an air compressor, a main air storage cylinder and a drying tank. The drying tank is provided with an interface A19 and an interface A20, and the interface A19 is connected to the interface A20; the air compressor is connected to the interface A19 through a pipeline, and the interface A20 is connected to the top of the main air storage cylinder through a pipeline, and the main air storage cylinder is connected to the other end of the intake pipeline through a pipeline.

[0014] The beneficial effects of adopting the above further solution are simple structure, reasonable design, using an air compressor to provide an air source, and at the same time using a drying tank to dry the air source and then store it in the main air storage cylinder for use in trailer braking, making air source provision convenient.

[0015] Furthermore, the drying tank is provided with an interface A21, which is connected to the interface A20 through a pipeline; and further includes an auxiliary air storage cylinder, the space inside the auxiliary air storage cylinder is divided into an upper chamber and a lower chamber from top to bottom, the upper chamber is connected to the main air storage cylinder through a pipeline, and the lower chamber is connected to the interface A21 through a pipeline.

[0016] The beneficial effects of adopting the above-mentioned further scheme are simple structure and reasonable design. The air source is provided by an air compressor, and the air source is dried by a drying tank and then stored in the upper chambers of the main air storage cylinder and the auxiliary air storage cylinder. At the same time, part of the air source is stored in the lower chamber of the auxiliary air storage cylinder. The air source in the lower chamber of the auxiliary air storage cylinder can be reversed into the drying tank to backflush the moisture and oil in the drying tank, thereby ensuring the smooth progress of the drying operation.

[0017] Furthermore, a pressure gauge is installed on the top of the main air storage cylinder.

[0018] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and real-time monitoring of the pressure in the main air storage cylinder by a pressure gauge during operation, which is safe and reliable.

[0019] Furthermore, a pressure limiting valve is fixedly installed on the intake pipe near the other end thereof.

[0020] The beneficial effects of adopting the above further solution are simple structure, reasonable design, using the pressure limiting valve to limit pressure, ensuring safety, improving work efficiency and adapting to different work needs.

[0021] Furthermore, drainage outlets are respectively provided at the bottom of the main air storage cylinder, the bottom of the upper chamber and the bottom of the lower chamber, and drainage valves are respectively installed at the three drainage outlets.

[0022] The beneficial effects of adopting the above further solution are simple structure, reasonable design, and the use of the drain valve to facilitate the drainage of water in the lower chambers of the main air reservoir and the auxiliary air reservoir.

[0023] Furthermore, the interface A7 is connected to one end of the exhaust pipe.

[0024] The beneficial effects of adopting the above further solution are simple structure and reasonable design. When the operator releases the pedal, the gas in the dual-pipe trailer valve is connected through the exhaust pipe.

[0025] Furthermore, the interface A3 is connected to one end of the pedal oil circuit.

[0026] The beneficial effects of adopting the above further solution are simple structure and reasonable design. When the pedal is stepped on, the oil enters the dual-pipe trailer valve through the interface A3.

[0027] Furthermore, the single-line trailer valve is a two-position, two-way valve.

[0028] The beneficial effects of adopting the above further solution are reasonable selection of the two-position two-way valve, simple structure, fast response speed and low energy consumption.

[0029] The utility model also relates to a tractor, comprising the three-pipeline air brake trailer control system as described above.

[0030] The beneficial effect of adopting the above further solution is that the utility model also provides a tractor with a compact structure, reasonable design, single pipeline + double pipeline coexistence, which can be selected by users, meets the needs of air brake trailers, and is easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a structural diagram of the present utility model.

[0032] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0033] 1. Pre-brake solenoid valve; 2. Single-line trailer valve; 3. Dual-line trailer valve; 4. Parking solenoid valve; 5. Shuttle valve; 6. Black brake line; 7. Red brake line; 8. Yellow brake line; 9. Air compressor; 10. Main air reservoir; 11. Drying tank; 12. Auxiliary air reservoir; 13. Pressure gauge; 14. Pressure limiting valve; 15. Drain valve. DETAILED DESCRIPTION

[0034] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0035] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0036] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0037] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0038] Example 1

[0039] like Figure 1 As shown, this embodiment provides a three-line air brake trailer control system, including a pre-brake solenoid valve 1, a single-line trailer valve 2, a dual-line trailer valve 3, a parking solenoid valve 4, and a shuttle valve 5. The pre-brake solenoid valve 1 is provided with a port A1, a port A2, and a port A3, and the port A2 can be communicated with the port A1 or the port A3; the dual-line trailer valve 3 is provided with a port A4, a port A5, a port A8, and a port A9, and the port A4 can be communicated with the port A8 or the port A9. The port A4 is connected to the valve core cavity inside the dual-line trailer valve 3;

[0040] The single-line trailer valve 2 is provided with an interface A16 and an interface A17, and the interface A16 is connected or disconnected with the interface A17; the parking solenoid valve 4 is provided with an interface A10, an interface A11 and an interface A12, and the interface A11 can be connected with the interface A10 or the interface A12; the shuttle valve 5 is provided with an interface A13, an interface A14 and an interface A15, and the interface A13 is connected with the interface A14, and the interface A15 is connected with the pipeline connecting the interface A13 and the interface A14;

[0041] The interface A4 is connected to one end of the air intake pipe, the interface A16 is connected to the air intake pipe through a pipe, and the interface A17 is connected to the black brake pipe 6; the interface A1 is connected to the connection point between the interface A16 and the air intake pipe through a pipe, the interface A2 is connected to the interface A5 through a pipe, the interface A8 is connected to the interface A10 through a pipe, and the pipe connecting the interface A8 and the interface A1 is connected to one end of the red brake pipe 7; the interface A9 is connected to the interface A14 through a pipe, the interface A11 is connected to the interface A13 through a pipe, and the interface A15 is connected to one end of the yellow brake pipe 8; the yellow brake pipe is connected to the interface A18 on the single-line trailer valve that is connected to its internal valve cavity through a pipe.

[0042] During operation, the principle of a single-line trailer is as follows: when the foot pedal is pressed, the oil flows into the dual-line trailer valve, and at the same time the pre-brake solenoid valve is energized, and port A5 is connected, and pre-loading is performed in advance. At this time, the air path flows to port A9, port A14, port A15, port A18 and the black brake line, which cuts off the air in the black handshake joint and brakes the trailer;

[0043] The principle of a dual-line trailer is as follows: when driving, the parking solenoid valve is energized to release the trailer brake;

[0044] When the foot pedal is depressed, the oil flows into the dual-line trailer valve. At the same time, the pre-brake solenoid valve is energized, and interface A5 is connected to preload in advance. At this time, the air path is: interface A9, interface A14, interface A15 and the yellow brake line; the yellow handshake connector is connected to the air source, and the trailer is braked.

[0045] This embodiment has a compact structure and a reasonable design. Single-line + double-line coexistence is available for user selection, meeting the needs of air brake trailers and is easy to use.

[0046] Example 2

[0047] Based on Example 1, this embodiment further includes an air compressor 9, a main air reservoir 10 and a drying tank 11. The drying tank 11 is provided with an interface A19 and an interface A20, and the interface A19 is connected to the interface A20; the air compressor 9 is connected to the interface A19 through a pipeline, the interface A20 is connected to the top of the main air reservoir 10 through a pipeline, and the main air reservoir 10 is connected to the other end of the intake pipeline through a pipeline.

[0048] This solution has a simple structure and a reasonable design. It uses an air compressor 9 to provide an air source, and at the same time uses a drying tank 11 to dry the air source and then store it in a main air reservoir for use in trailer braking, making air source provision convenient.

[0049] Example 3

[0050] On the basis of Example 2, in this embodiment, the drying tank 11 is further provided with an interface A21, which is connected to the interface A20 through a pipeline; and further includes an auxiliary air reservoir 12, the space inside the auxiliary air reservoir 12 is divided into an upper chamber and a lower chamber from top to bottom, the upper chamber is connected to the main air reservoir 10 through a pipeline, and the lower chamber is connected to the interface A21 through a pipeline.

[0051] This solution has a simple structure and a reasonable design. It uses an air compressor 9 to provide an air source, and uses a drying tank 11 to dry the air source and then store it in the upper chambers of the main air storage cylinder 10 and the auxiliary air storage cylinder 12. At the same time, part of the air source is stored in the lower chamber of the auxiliary air storage cylinder 12. The air source in the lower chamber of the auxiliary air storage cylinder 12 can flow back into the drying tank 11 to backflush the moisture and oil in the drying tank 11, thereby ensuring the smooth progress of the drying operation.

[0052] Example 4

[0053] On the basis of Example 3, in this embodiment, a pressure gauge 13 is installed on the top of the main air reservoir 10 .

[0054] This solution has a simple structure and a reasonable design. During operation, the pressure gauge 13 is used to monitor the pressure in the main air storage cylinder 10 in real time, which is safe and reliable.

[0055] Example 5

[0056] On the basis of any one of Examples 3 to 4, in this embodiment, a pressure limiting valve 14 is fixedly installed on the intake pipe near the other end thereof.

[0057] This solution has a simple structure and a reasonable design. It uses the pressure-limiting valve 14 to perform pressure limiting processing, thereby ensuring safety, improving work efficiency, and adapting to different work requirements.

[0058] Example 6

[0059] On the basis of any one of Examples 3 to 5, in this embodiment, drainage outlets are respectively provided at the bottom of the main air storage cylinder 10, the bottom of the upper chamber, and the bottom of the lower chamber, and drainage valves 15 are respectively installed at the three drainage outlets.

[0060] This solution has a simple structure and a reasonable design, and utilizes the drain valve 15 to facilitate draining the water in the lower chambers of the main air reservoir 10 and the auxiliary air reservoir 12 .

[0061] Example 7

[0062] On the basis of the above embodiments, in this embodiment, the interface A7 is communicated with one end of the exhaust pipe.

[0063] The solution has a simple structure and a reasonable design. When the operator releases the pedal, the gas in the dual-pipe trailer valve is connected through the exhaust pipe.

[0064] Example 8

[0065] On the basis of the above embodiments, in this embodiment, the interface A3 is communicated with one end of the pedal oil circuit.

[0066] This solution has a simple structure and a reasonable design. When the pedal is stepped on, the oil enters the dual-pipe trailer valve through the interface A3.

[0067] Example 9

[0068] On the basis of the above embodiments, in this embodiment, the single-line trailer valve 2 is a two-position two-way valve.

[0069] The two-position two-way valve is reasonably selected, with simple structure, fast response speed and low energy consumption.

[0070] Example 10

[0071] On the basis of the above embodiments, this embodiment further provides a tractor, comprising the three-pipeline air brake trailer control system as described above.

[0072] This embodiment also provides a tractor with a compact structure, reasonable design, and coexistence of single pipeline and double pipeline for users to choose, meeting the needs of air brake trailers and being easy to use.

[0073] The working principle of this utility model is as follows:

[0074] During operation, the principle of a single-line trailer is as follows: when the foot pedal is pressed, the oil flows into the dual-line trailer valve through port A6. At the same time, the pre-brake solenoid valve is energized, port A5 is connected, and pre-loading is performed in advance. At this time, the air path flows to port A9, port A14, port A15, port A18 and the black brake line, which cuts off the air in the black handshake joint and brakes the trailer.

[0075] The principle of a dual-line trailer is as follows: when driving, the parking solenoid valve is energized to release the trailer brake;

[0076] When the foot pedal is depressed, the oil interface A6 flows into the dual-line trailer valve. At the same time, the pre-brake solenoid valve is energized, and the interface A5 is connected, and pre-loading is performed in advance. At this time, the air path direction is: interface A9, interface A14, interface A15 and the yellow brake line; the yellow handshake connector is connected to the air source, and the trailer is braked.

[0077] It should be noted that all electronic components involved in the present invention adopt existing technologies, and the above components are electrically connected to the controller, and the control circuits between the controller and the components are existing technologies.

[0078] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0079] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0080] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A three-pipeline air brake trailer control system, characterized by: The invention comprises a pre-brake solenoid valve (1), a single-line trailer valve (2), a double-line trailer valve (3), a parking solenoid valve (4) and a shuttle valve (5); the pre-brake solenoid valve (1) is provided with an interface A1, an interface A2 and an interface A3, and the interface A2 can be communicated with the interface A1 or the interface A3; the double-line trailer valve (3) is provided with an interface A4, an interface A5, an interface A8 and an interface A9, and the interface A4 can be communicated with the interface A8 or the interface A9, and the interface A4 is communicated with the valve core cavity inside the double-line trailer valve (3); The single-line trailer valve (2) is provided with an interface A16 and an interface A17, and the interface A16 is connected to or disconnected from the interface A17; the parking solenoid valve (4) is provided with an interface A10, an interface A11 and an interface A12, and the interface A11 can be connected to the interface A10 or the interface A12; the shuttle valve (5) is provided with an interface A13, an interface A14 and an interface A15, and the interface A13 is connected to the interface A14, and the interface A15 is connected to the pipeline connected between the interface A13 and the interface A14; The interface A4 is connected to one end of the air intake line, the interface A16 is connected to the air intake line through a pipeline, and the interface A17 is connected to the black brake line (6); the interface A1 is connected to the connection point between the interface A16 and the air intake line through a pipeline, the interface A2 is connected to the interface A5 through a pipeline, the interface A8 is connected to the interface A10 through a pipeline, and the pipeline connecting the interface A8 and the interface A1 is connected to one end of the red brake line (7); the interface A9 is connected to the interface A14 through a pipeline, the interface A11 is connected to the interface A13 through a pipeline, and the interface A15 is connected to one end of the yellow brake line (8); the yellow brake line (8) is connected to the interface A18 on the single-line trailer valve (2) that is connected to its internal valve cavity through a pipeline.

2. The three-pipeline air brake trailer control system according to claim 1, characterized in that: The invention also includes an air compressor (9), a main air storage cylinder (10) and a drying tank (11), wherein the drying tank (11) is provided with an interface A19 and an interface A20, wherein the interface A19 is in communication with the interface A20; the air compressor (9) is in communication with the interface A19 via a pipeline, the interface A20 is in communication with the top of the main air storage cylinder (10) via a pipeline, and the main air storage cylinder (10) is in communication with the other end of the air intake pipeline via a pipeline.

3. The three-pipeline air brake trailer control system according to claim 2, characterized in that: The drying tank (11) is further provided with an interface A21, which is communicated with the interface A20 via a pipeline; and further comprises an auxiliary air storage cylinder (12), wherein the space inside the auxiliary air storage cylinder (12) is divided into an upper chamber and a lower chamber from top to bottom, wherein the upper chamber is communicated with the main air storage cylinder (10) via a pipeline, and the lower chamber is communicated with the interface A21 via a pipeline.

4. The three-pipeline air brake trailer control system according to claim 3, characterized in that: A pressure gauge (13) is installed on the top of the main air storage cylinder (10).

5. The three-pipeline air brake trailer control system according to claim 3, characterized in that: A pressure limiting valve (14) is fixedly installed on the air intake pipe at a position close to the other end thereof.

6. The three-pipeline air brake trailer control system according to claim 3, characterized in that: The bottom of the main air storage cylinder (10), the bottom of the upper chamber, and the bottom of the lower chamber are respectively provided with drainage ports, and drainage valves (15) are respectively installed at the three drainage ports.

7. The three-pipeline air brake trailer control system according to any one of claims 1 to 6, characterized in that: The interface A7 is communicated with one end of the exhaust pipe.

8. The three-pipeline air brake trailer control system according to any one of claims 1 to 6, characterized in that: The interface A3 is communicated with one end of the pedal oil circuit.

9. The three-pipeline air brake trailer control system according to any one of claims 1 to 6, characterized in that: The single-line trailer valve (2) is a two-position, two-way valve.

10. A tractor, characterized in that: It comprises a three-pipeline air brake trailer control system as described in any one of claims 1-9.

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