Air brake system with feedback for tractor

Abstract

The utility model relates to an air brake system with feedback for a tractor, and belongs to the field of tractors. Comprising a self-circulation air compressor, a drying tank, a plurality of air storage tanks, a pressure limiting valve, a one-way air brake mechanism, a two-way air brake mechanism and an air cover connector. The self-circulation air compressor is connected with the drying tank, the drying tank is connected with the multiple air storage tanks, the multiple air storage tanks are connected with one another, the air storage tanks are connected with the pressure limiting valve, the pressure limiting valve is connected with the single-path air brake mechanism and the double-path air brake mechanism, and the single-path air brake mechanism is connected with the double-path air brake mechanism. The one-way pneumatic brake mechanism and the two-way pneumatic brake mechanism are both connected with the gas cover connector, and the two-way pneumatic brake mechanism is connected with a hydraulic oil tank of the tractor. According to the self-circulation air brake trailer, compatibility of a single-pipeline air brake trailer and a double-pipeline air brake trailer is facilitated, the air compressor control loop is additionally arranged between the self-circulation air compressor and the drying tank, energy consumption and the exhaust frequency of the exhaust valve are reduced, and the service life of the exhaust valve is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of tractors, in particular to an air brake system with feedback for tractors. Background Art

[0002] With the increasing popularity of high-horsepower tractors, the use of tractors adapted to trailers is increasing both domestically and internationally. This has led to increasing customer demands for tractor trailer brakes, particularly regarding the ergonomics and reliability of the trailer brake system. Currently, tractor trailer brake systems have a single function, with exhaust volume varying with engine speed. Once the engine speed stabilizes, the air compressor delivers compressed air at full capacity. This reduces the life of the exhaust valve and increases the frequency of exhaust valve exhaust, which is accompanied by a sharp exhaust sound, seriously impacting the driver's experience. Furthermore, due to regulatory adjustments in some regions, single- and dual-circuit air brake trailers are now available on the market. Traditional single-configuration tractor trailer brake systems feature either a single- or dual-circuit brake system, significantly inconvenient for customers, who must use at least two tractors with different configurations to adapt their trailers. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide an air brake system with feedback for a tractor to solve the above problems.

[0004] The utility model provides a technical solution to the above-mentioned technical problems as follows: a tractor air brake system with feedback, comprising: a self-circulating air compressor, a drying tank, multiple air storage tanks, a pressure limiting valve, a single-way air brake mechanism, a dual-way air brake mechanism and an air cover joint; the self-circulating air compressor is connected to the drying tank, the drying tank is connected to the multiple air storage tanks, the multiple air storage tanks are connected to each other, the air storage tanks are connected to the pressure limiting valve, the pressure limiting valve is connected to the single-way air brake mechanism and the dual-way air brake mechanism, the single-way air brake mechanism and the dual-way air brake mechanism are both connected to the air cover joint, and the dual-way air brake mechanism is connected to the tractor hydraulic oil tank.

[0005] The beneficial effects of the present invention are as follows: the single-circuit air brake mechanism and the dual-circuit air brake mechanism are conducive to compatibility with single-line air brake trailers and dual-line air brake trailers; at the same time, the mutual connection between the self-circulating air compressor and the drying tank also increases the air compressor control circuit, when the trailer brake system is inflated to the set pressure value, the piston valve of the air compressor is opened, so that the two pistons of the air compressor are connected for self-circulation, which reduces energy consumption and can also greatly reduce the exhaust frequency of the exhaust valve, which also greatly improves the service life of the exhaust valve; in addition, since an air compressor with a self-circulation function is selected, only a small amount of gas participates in the circulation when the air compressor is self-circulating, compared with an air compressor without self-circulation, an air compressor with a larger displacement can be selected to adapt to the tractor.

[0006] On the basis of the above technical solution, the present invention can also be improved as follows.

[0007] Furthermore, a pressure regulating valve, a filter and an exhaust valve are provided in the drying tank, the outlet port of the self-circulating air compressor is connected to the filter through a pipeline, the filter is connected to the multiple air storage tanks through a pipeline, and the exhaust valve is connected to the feedback port of the self-circulating air compressor through a pipeline.

[0008] The beneficial effects of adopting the above further scheme are: the pressure regulating valve is conducive to stably delivering the pressurized air source in the drying tank to the air storage tank for storage of the pressurized air source; the filter is conducive to filtering the gas generated in the air compressor before delivering it to the air storage tank for storage; the exhaust valve is conducive to delivering the pressure to the self-circulating air compressor after the pressure value of the trailer braking system reaches the preset pressure, thereby allowing the self-circulating air compressor to enter the self-circulating state.

[0009] Furthermore, the air cap joint includes: a first air cap joint, a second air cap joint and a third air cap joint; the single-way air brake mechanism is connected to the first air cap joint and the third air cap joint, and the dual-way air brake mechanism is connected to the second air cap joint and the third air cap joint.

[0010] The beneficial effect of adopting the above further solution is that the single-line air brake mechanism and the dual-line air brake mechanism are connected to the trailer through different air cover connectors, which is conducive to compatible braking of single-line trailers and dual-line trailers.

[0011] Furthermore, the single-circuit air brake mechanism is a single-line trailer valve, the air outlet port of the pressure limiting valve is connected to the single-circuit trailer valve through a pipeline, and the single-circuit trailer valve is connected to the first air cap connector and the third air cap connector.

[0012] The beneficial effect of adopting the above further solution is that the pressure limiting valve is connected to the single-line trailer valve, which is conducive to inputting the compressed gas stored in the gas tank into the single-line trailer valve, thereby achieving braking of the single-line trailer.

[0013] Furthermore, the dual-circuit air brake mechanism includes: a pre-brake solenoid valve, a dual-circuit trailer valve, a parking solenoid valve and a double check valve; the outlet port of the pressure limiting valve is connected to the pre-brake solenoid valve and the dual-circuit trailer valve through a pipeline, the pre-brake solenoid valve and the dual-circuit trailer valve are connected through a pipeline, the dual-circuit trailer valve is divided into three pipelines and are respectively connected to the second air cap connector, the parking solenoid valve and the double check valve, the parking solenoid valve and the double check valve are connected through a pipeline, and the double check valve is connected to the third air cap connector through a pipeline.

[0014] The beneficial effects of adopting the above-mentioned further scheme are: the pre-brake solenoid valve is conducive to making the trailer enter the braking state in advance, avoiding the rear trailer from colliding with the front tractor in the braking state; the double one-way valve is conducive to allowing the pressure air source to enter the third air cover joint through the double one-way valve when the dual-pipeline trailer valve is reversed, thereby controlling the trailer braking; the parking solenoid valve is conducive to releasing the parking brake after the power is reversed.

[0015] Furthermore, the dual-line trailer valve is connected to the tractor hydraulic oil tank through a service brake oil circuit.

[0016] The beneficial effect of adopting the above further solution is that the service brake oil circuit is conducive to applying the service brake pressure oil of the tractor to the dual-line trailer valve when the external brake pedal is stepped on, thereby reversing the dual-line trailer valve.

[0017] Furthermore, a drain valve for discharging liquid in the gas storage tank is provided on the side wall of the gas storage tank.

[0018] The beneficial effect of adopting the above further solution is that the drain valve is conducive to discharging the liquid mixed in the compressed air, thereby preventing the liquid in the compressed air from participating in braking along with the compressed air.

[0019] Furthermore, a pressure gauge for detecting the internal pressure of the gas storage tank is also provided on the side wall of the gas storage tank.

[0020] The beneficial effect of adopting the above further solution is that the pressure gauge is conducive to real-time detection of the pressure value of the compressed air in the gas storage tank, ensuring sufficient compressed air in multiple gas storage tanks while improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a schematic diagram of the overall connection provided by an embodiment of the present utility model.

[0022] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0023] 1. Self-circulating air compressor; 2. Drying tank; 3. Air storage tank; 4. Pressure limiting valve; 5. Single-way air brake mechanism; 6. Dual-way air brake mechanism; 7. Air cap connector; 31. Drain valve; 32. Pressure gauge; 61. Pre-brake solenoid valve; 62. Dual-line trailer valve; 63. Parking solenoid valve; 64. Double one-way valve; 65. Service brake oil circuit; 71. First air cap connector; 72. Second air cap connector; 73. Third air cap connector. DETAILED DESCRIPTION

[0024] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0025] like Figure 1As shown, a tractor air brake system with feedback includes: a self-circulating air compressor 1, a drying tank 2, multiple air storage tanks 3, a pressure limiting valve 4, a single-way air brake mechanism 5, a dual-way air brake mechanism 6 and an air cap connector 7; the self-circulating air compressor 1 is connected to the drying tank 2, the drying tank 2 is connected to the multiple air storage tanks 3, the multiple air storage tanks 3 are connected to each other, the air storage tanks 3 are connected to the pressure limiting valve 4, the pressure limiting valve 4 is connected to the single-way air brake mechanism 5 and the dual-way air brake mechanism 6, the single-way air brake mechanism 5 and the dual-way air brake mechanism 6 are both connected to the air cap connector 7, and the dual-way air brake mechanism 6 is connected to the tractor hydraulic oil tank.

[0026] It should be noted that: in the technical solution of the present utility model, the self-circulating air compressor 1 is a prior art, so its principle is not described in detail;

[0027] The single-way air brake mechanism 5 and the dual-way air brake mechanism 6 are used selectively, that is, when using the air brake system of the present application to connect a trailer, it is necessary to choose to connect with the single-way air brake mechanism 5 or the dual-way air brake mechanism 6.

[0028] The beneficial effects of the present invention are as follows: the single-circuit air brake mechanism and the dual-circuit air brake mechanism are conducive to compatibility with single-line air brake trailers and dual-line air brake trailers; at the same time, the mutual connection between the self-circulating air compressor and the drying tank also increases the air compressor control circuit, when the trailer brake system is inflated to the set pressure value, the piston valve of the air compressor is opened, so that the two pistons of the air compressor are connected for self-circulation, which reduces energy consumption and can also greatly reduce the exhaust frequency of the exhaust valve, which also greatly improves the service life of the exhaust valve; in addition, since an air compressor with a self-circulation function is selected, only a small amount of gas participates in the circulation when the air compressor is self-circulating, compared with an air compressor without self-circulation, an air compressor with a larger displacement can be selected to adapt to the tractor.

[0029] Preferably, Figure 1 As shown, a pressure regulating valve, a filter and an exhaust valve are provided in the drying tank 2. The outlet port of the self-circulating air compressor 1 is connected to the filter through a pipeline. The filter is connected to the multiple air storage tanks 3 through a pipeline. The exhaust valve is connected to the feedback port of the self-circulating air compressor 1 through a pipeline.

[0030] The beneficial effects of adopting the above preferred scheme are: the pressure regulating valve is conducive to stably delivering the pressurized air source in the drying tank to the air storage tank for storage of the pressurized air source; the filter is conducive to filtering the gas generated in the air compressor and then delivering it to the air storage tank for storage; the exhaust valve is conducive to delivering the pressure to the self-circulating air compressor after the pressure value of the trailer braking system reaches the preset pressure, thereby allowing the self-circulating air compressor to enter the self-circulating state.

[0031] Preferably, Figure 1 As shown, the air cap connector 7 includes: a first air cap connector 71, a second air cap connector 72 and a third air cap connector 73; the single-way air brake mechanism 5 is connected to the first air cap connector 71 and the third air cap connector 73, and the dual-way air brake mechanism 6 is connected to the second air cap connector 72 and the third air cap connector 73.

[0032] It should be noted that in the technical solution of the present invention, the first gas cap connector 71, the second gas cap connector 72 and the third gas cap connector 73 are black, red and yellow respectively. This setting complies with industry standards in certain regions and is convenient for users to connect wires.

[0033] The beneficial effect of adopting the above preferred solution is that the single-way air brake mechanism and the dual-way air brake mechanism are connected to the trailer through different air cover connectors, which is conducive to compatible braking of single-line trailers and dual-line trailers.

[0034] Preferably, Figure 1 As shown, the single-circuit air brake mechanism 5 is a single-line trailer valve, the outlet port of the pressure limiting valve 4 is connected to the single-circuit trailer valve through a pipeline, and the single-circuit trailer valve is connected to the first air cap connector 71 and the third air cap connector 73.

[0035] The beneficial effect of adopting the above preferred solution is that the pressure limiting valve is connected to the single-line trailer valve, which is conducive to inputting the compressed gas stored in the gas tank into the single-line trailer valve, thereby achieving braking of the single-line trailer.

[0036] Preferably, Figure 1 As shown, the dual-circuit air brake mechanism 6 includes: a pre-brake solenoid valve 61, a dual-circuit trailer valve 62, a parking solenoid valve 63 and a double check valve 64; the outlet port of the pressure limiting valve 4 is connected to the pre-brake solenoid valve 61 and the dual-circuit trailer valve 62 through a pipeline, the pre-brake solenoid valve 61 and the dual-circuit trailer valve 62 are connected through a pipeline, the dual-circuit trailer valve 62 is divided into three pipelines and are respectively connected to the second air cap connector 72, the parking solenoid valve 63 and the double check valve 64, the parking solenoid valve 63 and the double check valve 64 are connected through a pipeline, and the double check valve 64 is connected to the third air cap connector 73 through a pipeline.

[0037] The beneficial effects of adopting the above-mentioned preferred scheme are: the pre-brake solenoid valve is conducive to making the trailer enter the braking state in advance, avoiding the rear trailer from colliding with the front tractor in the braking state; the double one-way valve is conducive to allowing the pressure air source to enter the third air cover joint through the double one-way valve when the dual-pipeline trailer valve is reversed, thereby controlling the trailer braking; the parking solenoid valve is conducive to releasing the parking brake after the power is reversed.

[0038] Preferably, Figure 1 As shown, the dual-line trailer valve 62 is connected to the tractor hydraulic oil tank through the service brake oil line 65.

[0039] The beneficial effect of adopting the above preferred solution is that the service brake oil circuit is conducive to applying the service brake pressure oil of the tractor to the dual-line trailer valve when the external brake pedal is stepped on, thereby reversing the dual-line trailer valve.

[0040] Preferably, Figure 1 As shown, a drain valve 31 for draining the liquid in the gas storage tank 3 is provided on the side wall of the gas storage tank 3 .

[0041] The beneficial effect of adopting the above preferred solution is that the drain valve is conducive to discharging the liquid mixed in the compressed air, thereby preventing the liquid in the compressed air from participating in braking along with the compressed air.

[0042] Preferably, Figure 1 As shown, a pressure gauge 32 for detecting the internal pressure of the gas storage tank 3 is also provided on the side wall of the gas storage tank 3 .

[0043] The beneficial effect of adopting the above preferred solution is that the pressure gauge is conducive to real-time detection of the pressure value of the compressed air in the gas storage tank, ensuring sufficient compressed air in multiple gas storage tanks while improving safety.

[0044] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to 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 should not be understood as a limitation to the present invention.

[0045] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature specified as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of this utility model, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0046] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0047] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0048] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0049] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are illustrative and cannot be understood as limitations on the present invention. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A tractor air brake system with feedback, characterized in that: include: A self-circulating air compressor (1), a drying tank (2), a plurality of air storage tanks (3), a pressure limiting valve (4), a single-way air brake mechanism (5), a dual-way air brake mechanism (6), and an air cover connector (7); The self-circulating air compressor (1) is connected to the drying tank (2), the drying tank (2) is connected to a plurality of the air storage tanks (3), the plurality of the air storage tanks (3) are connected to each other, the air storage tanks (3) are connected to the pressure limiting valve (4), the pressure limiting valve (4) is connected to the single-way air brake mechanism (5) and the dual-way air brake mechanism (6), the single-way air brake mechanism (5) and the dual-way air brake mechanism (6) are both connected to the air cover connector (7), and the dual-way air brake mechanism (6) is connected to the tractor hydraulic oil tank.

2. The air brake system with feedback for tractors according to claim 1, characterized in that: A pressure regulating valve, a filter and an exhaust valve are provided in the drying tank (2); the air outlet port of the self-circulating air compressor (1) is connected to the filter via a pipeline; the filter is connected to the plurality of air storage tanks (3) via a pipeline; and the exhaust valve is connected to the feedback port of the self-circulating air compressor (1) via a pipeline.

3. The air brake system with feedback for tractors according to claim 1, characterized in that: The air cap joint (7) comprises: a first air cap joint (71), a second air cap joint (72) and a third air cap joint (73); the single-way air brake mechanism (5) is connected to the first air cap joint (71) and the third air cap joint (73); and the dual-way air brake mechanism (6) is connected to the second air cap joint (72) and the third air cap joint (73).

4. The air brake system with feedback for tractors according to claim 3, characterized in that: The single-circuit air brake mechanism (5) is a single-circuit trailer valve, the air outlet port of the pressure-limiting valve (4) is connected to the single-circuit trailer valve via a pipeline, and the single-circuit trailer valve is connected to the first air cap connector (71) and the third air cap connector (73).

5. The air brake system with feedback for tractors according to claim 3, characterized in that: The dual-circuit air brake mechanism (6) comprises: a pre-brake solenoid valve (61), a dual-circuit trailer valve (62), a parking solenoid valve (63) and a dual-check valve (64); the outlet port of the pressure-limiting valve (4) is connected to the pre-brake solenoid valve (61) and the dual-circuit trailer valve (62) through a pipeline, the pre-brake solenoid valve (61) and the dual-circuit trailer valve (62) are connected through a pipeline, the dual-circuit trailer valve (62) is divided into three pipelines, which are respectively connected to the second air cover connector (72), the parking solenoid valve (63) and the dual-check valve (64), the parking solenoid valve (63) and the dual-check valve (64) are connected through a pipeline, and the dual-check valve (64) is connected to the third air cover connector (73) through a pipeline.

6. The air brake system with feedback for tractors according to claim 5, characterized in that: The dual-line trailer valve (62) is connected to the tractor hydraulic oil tank via a service brake oil circuit (65).

7. The air brake system with feedback for tractors according to claim 1, characterized in that: A drain valve (31) for draining liquid from the gas storage tank (3) is provided on the side wall of the gas storage tank (3).

8. The air brake system with feedback for tractors according to claim 1, characterized in that: A pressure gauge (32) for detecting the internal pressure of the gas storage tank (3) is also provided on the side wall of the gas storage tank (3).

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