CN218377124U - Hydraulic steering brake valve set of tracked vehicle - Google Patents
Hydraulic steering brake valve set of tracked vehicle Download PDFInfo
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- CN218377124U CN218377124U CN202222683354.3U CN202222683354U CN218377124U CN 218377124 U CN218377124 U CN 218377124U CN 202222683354 U CN202222683354 U CN 202222683354U CN 218377124 U CN218377124 U CN 218377124U
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Abstract
The utility model belongs to the technical field of the tracked vehicle transmission system and specifically relates to a tracked vehicle hydraulic steering brake valves and have hydraulic system of this valves, including steering brake valve block, check valve, proportion overflow valve, diverter valve, brake valve and fixed choke, the inside processing of steering brake valve block have a hydraulic pressure oil duct, check valve, proportion overflow valve, diverter valve and brake valve integration are installed in steering brake valve block, and check valve, proportion overflow valve, diverter valve and brake valve communicate each other through the inside oil duct of steering brake valve block, the utility model discloses can realize the automatic control of steering and driving braking, hydraulic system simple structure, degree of automation is high; the hydraulic system of the crawler can be simply modified on the basis of the original crawler hydraulic system, steering and braking are integrated, the structure of the crawler is greatly simplified, and the manufacturing cost is reduced.
Description
Technical Field
The utility model belongs to the technical field of tracked vehicle transmission system and specifically relates to a tracked vehicle hydraulic pressure turns to brake valve group and has hydraulic system of this valves.
Background
The existing transmission system adopts a tracked vehicle combining a mechanical gearbox and a hydrostatic transmission device, when steering is carried out, a steering oil cylinder in a vehicle hydraulic system enables a steering gear to be separated to cut off power, and then a brake friction plate is pressed to brake one side of the vehicle, so that the speed difference of two side tracks is realized, and the steering operation is finished; when the tracked vehicle is braked during running, a manual operation rod piece or a flexible shaft is needed to control the left steering arm and the right steering arm of the gearbox, so that the gearbox steering shifting fork compresses a brake friction plate, and the effect of running braking is further achieved. However, in the specific operation and use process, the tracked vehicle adopting the above structural system also has the following defects (such as a tracked mechanical hydraulic brake and steering mechanism with the application number of CN 201510956351.4):
1. when a rod piece or a flexible shaft is adopted to control service braking, a mounting position needs to be reserved on the tracked vehicle, the assembly and the adjustment are complicated, and labor and time are wasted;
2. service braking and steering are controlled by two different control systems, so that the control is complicated and the cost is increased;
3. with the rapid development of agricultural machinery automation, the tracked vehicle gradually develops towards remote control driving or automatic driving, and a steering braking system is inevitably automatically controlled, so that the existing structural system cannot meet the use requirement.
Disclosure of Invention
The utility model aims at providing a tracked vehicle hydraulic pressure turns to brake valve group and has hydraulic system of this valves, its overall structure design science, compact structure, operation convenient to use are reliable, can realize turning to and service brake's automatic control, will turn to and brake integration together, have reduced manufacturing cost.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a hydraulic steering brake valve group of a tracked vehicle comprises a steering brake valve block, a one-way valve, a proportional overflow valve, a steering valve, a brake valve and a fixed throttling port, wherein a hydraulic oil duct is processed inside the steering brake valve block, the one-way valve, the proportional overflow valve, the steering valve and the brake valve are integrally installed in the steering brake valve block, the one-way valve, the proportional overflow valve, the steering valve and the brake valve are mutually communicated through the internal oil duct of the steering brake valve block, and the fixed throttling port is integrally installed in the hydraulic oil duct in the steering brake valve block.
Furthermore, a first oil inlet, a first oil return port, a pressure feedback port, a first oil outlet, a second oil outlet and a second oil return port are arranged in the steering brake valve block, wherein the first oil inlet on the steering brake valve block is communicated with an oil inlet pipeline of a hydraulic oil pump, the first oil return port on the steering brake valve block is communicated with a hydraulic oil tank on the tracked vehicle through a pipeline, and the first oil outlet, the second oil outlet and the second oil return port on the steering brake valve block are respectively communicated with oil ports on the steering oil cylinder.
Further, in the steering brake valve block, an oil inlet of the one-way valve is communicated with the first oil inlet; an oil outlet of the one-way valve is communicated with a pressure feedback port in the steering brake valve block, an oil inlet of the proportional overflow valve and an oil inlet of the steering valve; two oil outlets of the steering valve are respectively communicated with a first oil outlet and a second oil outlet in the steering brake valve block; an oil inlet of the brake valve is communicated with an oil return port of the steering valve, and an oil outlet of the brake valve is communicated with an oil outlet of the proportional overflow valve and a first oil return port in the steering brake valve block; the fixed throttling port is communicated with the second oil return port and the first oil return port.
A tracked vehicle hydraulic system adopting a hydraulic steering brake valve bank comprises a hydraulic oil tank, an oil suction pipe, a hydraulic oil pump, a steering brake valve bank oil return pipe, a steering brake valve bank oil inlet pipe, a hydraulic steering brake valve bank, a steering oil cylinder oil return pipe, a steering oil cylinder right oil inlet pipe, a steering oil cylinder left oil inlet pipe, a steering oil cylinder and a gearbox, wherein an oil suction port of the hydraulic oil pump is communicated with an oil outlet of the hydraulic oil tank through the oil suction pipe, a first oil inlet of the hydraulic steering brake valve bank is communicated with the hydraulic oil pump through the steering brake valve bank oil inlet pipe, a first oil return port of the hydraulic steering brake valve bank is communicated with the hydraulic oil tank through the steering brake valve bank oil return pipe, a first oil outlet of the hydraulic steering brake valve bank is communicated with the steering oil cylinder through the steering oil cylinder left oil inlet pipe, a second oil outlet of the hydraulic steering brake valve bank is communicated with the steering oil cylinder through the steering oil inlet pipe, a second oil return port of the hydraulic steering brake valve bank is communicated with the steering oil cylinder through the steering oil return pipe, and the steering oil cylinder is installed on the gearbox into a whole.
Furthermore, a left piston rod and a right piston rod are arranged on the steering oil cylinder, a left oil inlet and a right oil inlet are arranged in the steering oil cylinder, the left piston rod is communicated with the inside of the left oil inlet in the steering oil cylinder, and the right piston rod is communicated with the inside of the right oil inlet of the steering oil cylinder.
Furthermore, a left brake rocker arm and a right brake rocker arm are arranged on the gearbox, the left brake rocker arm and the right brake rocker arm are mounted with the gearbox, the left piston rod is lapped on the left brake rocker arm of the gearbox, and the right piston rod is lapped on the right brake rocker arm of the gearbox.
The utility model has the advantages that: the utility model discloses a whole structural design science of tracked vehicle hydraulic pressure steering brake valves, operation simple to use, convenience, reliable has following technical characterstic and advantage in specific installation use:
1. the hydraulic steering brake valve group integrates the steering valve and the brake valve in the steering brake valve block, has compact integral structure, simple system and convenient installation, perfects the function of a hydraulic system, has reliable performance, and simultaneously adopts a proportional overflow valve to accurately control the output pressure, thereby realizing the accurate steering control of the tracked vehicle;
2. the tracked vehicle hydraulic system adopting the hydraulic steering brake valve group can realize automatic control of steering and service braking, and has simple structure and high automation degree;
3. adopt the utility model discloses the tracked vehicle hydraulic system of hydraulic steering brake valves can simply modify on original tracked vehicle hydraulic system's basis, will turn to and brake integrated together, very big simplification the tracked vehicle structure, reduced manufacturing cost.
Drawings
Fig. 1 is a schematic view of the structural principle of the initial state of the hydraulic steering brake valve set of the tracked vehicle of the present invention;
fig. 2 is a schematic view of the structural principle of the hydraulic steering brake valve set of the tracked vehicle in a left-turn state according to the present invention;
FIG. 3 is a schematic structural diagram of the hydraulic steering brake valve set of the tracked vehicle in a right-turn state according to the present invention;
FIG. 4 is a schematic view of the structural principle of the hydraulic steering brake valve set of the tracked vehicle in a braking state according to the present invention;
fig. 5 is a top view of a tracked vehicle hydraulic system employing a hydraulic steering and braking valve assembly in accordance with the present invention;
FIG. 6 is a front view of a tracked vehicle hydraulic system in which a hydraulic steering and braking valve assembly is employed in the present invention;
the reference numbers in the figures are: 1. a hydraulic oil tank; 2. an oil suction pipe; 3. A hydraulic oil pump; 4. an oil return pipe of the steering brake valve bank; 5. an oil inlet pipe of a steering brake valve group; 6. a hydraulic steering brake valve bank; 61. a one-way valve; 62. a steering brake valve block; 63. a steering valve; 64. fixing the throttling opening; 65. a brake valve; 66. a proportional relief valve; 7. an oil return pipe of the steering cylinder; 8. a right oil inlet pipe of the steering oil cylinder; 9. a left oil inlet pipe of the steering oil cylinder; 10. a steering cylinder; 101. a left piston rod; 102. A right piston rod; 11. a gearbox; 111. a left brake rocker arm; 112. and a right brake rocker arm.
Detailed Description
In order to make the technical solution of the present invention better understood, the present invention is further described in detail below with reference to the drawings and the detailed description of the specification, and it should be noted that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly or indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "left" and "right" used in this specification to denote orientation are used with reference to a particular structure shown in the drawings, and do not constitute a limitation on the structure.
Specific example 1: as shown in the attached drawing 1 of the specification, the hydraulic steering brake valve group 6 for the tracked vehicle provided by the present invention mainly comprises a check valve 61, a steering brake valve block 62, a steering valve 63, a fixed orifice 64, a brake valve 65 and a proportional overflow valve 66; the four components of the check valve 61, the proportional relief valve 66, the steering valve 63 and the brake valve 65 are integrally installed in the steering brake valve block 62 and are communicated with each other through the internal oil passage of the steering brake valve block 62, and the fixed throttle 64 is integrally installed in the oil passage in the steering brake valve block 62. A first oil inlet P, a first oil return port T, a pressure feedback port GP, a first oil outlet R, a second oil outlet L and a second oil return port ST are arranged in the steering brake valve block 62; the first oil inlet P on the steering brake valve block 62 is communicated with an oil inlet pipeline of the oil pump 3, the first oil return port T on the steering brake valve block 62 is communicated with a hydraulic oil tank 1 on the tracked vehicle through a hydraulic pipeline, and the first oil outlet R, the second oil outlet L and the second oil return port ST on the steering brake valve block 62 are respectively communicated with oil ports of the steering oil cylinder 10 through hydraulic pipelines. In the steering brake valve block 62, the oil inlet of the check valve 61 is communicated with the first oil inlet P; the oil outlet of the one-way valve 61 is communicated with a pressure feedback port GP in the steering brake valve block 62, the oil inlet of the proportional overflow valve 66 and the oil inlet of the steering valve 63; two oil outlets on the steering valve 63 are respectively communicated with a first oil outlet R and a second oil outlet L in the steering brake valve block; an oil inlet on the brake valve 65 is communicated with an oil return port of the steering valve 63; an oil outlet of the brake valve 65 is communicated with an oil outlet of the proportional overflow valve 66 and a first oil return port T in the steering brake valve block 62; the fixed orifice 64 communicates with the second return port ST and the first return port T.
Initial state: as shown in the attached drawing 1 of the specification, the steering valve 63 in the present invention is in the middle position under the action of left and right spring forces, the oil inlet of the steering valve 63 is communicated with the first oil outlet R of the steering brake valve block 62, the oil return port of the steering valve 63 is communicated with the second oil outlet L of the steering brake valve block 62, and the oil inlet and outlet of the steering valve 63 are communicated internally; the brake valve 65 is positioned at the left side under the action of the spring force, and an oil inlet of the brake valve 65 is communicated with an oil return port of the steering valve 63 and a first oil return port T of the steering brake valve block 62; the oil from the hydraulic oil pump 3 is communicated with the hydraulic oil tank 1 through the check valve 61, the steering valve 63, the brake valve 65 and the first oil return port T of the steering brake valve block 62.
Left-turn state: as shown in the attached drawing 2 of the specification, the steering valve 63 in the present invention is located at the right side position, the oil inlet of the steering valve 63 is communicated with the first oil outlet R of the steering brake valve block 62, and the oil return port of the steering valve 63 is communicated with the second oil outlet L of the steering brake valve block 62; the brake valve 65 is positioned at the left side, and an oil inlet of the brake valve 65 is communicated with an oil return port of the steering valve 63 and a first oil return port T of the steering brake valve block 62; oil from the oil pump 3 is communicated with a left piston 101 cavity of the steering oil cylinder 10 through a first oil outlet R of the one-way valve 61, the steering valve 63 and the steering brake valve block 62; when the steering cylinder 10 reaches the limit position or the pressure of the steering cylinder 10 exceeds the set pressure, the proportional overflow valve 66 is opened, and the oil from the hydraulic oil pump 3 is communicated with the hydraulic oil tank 1 through the proportional overflow valve 66 and the first oil return port T of the steering brake valve block 62.
And (3) a right-turn state: as shown in the attached drawing 3 of the specification, the steering valve 63 in the present invention is located at the left side, the oil inlet of the steering valve 63 is communicated with the first oil outlet L of the steering brake valve block 62, and the oil return port of the steering valve 63 is communicated with the second oil outlet R of the steering brake valve block 62; the brake valve 65 is positioned at the left side, and an oil inlet of the brake valve 65 is communicated with an oil return port of the steering valve 63 and a first oil return port T of the steering brake valve block 62; the oil from the hydraulic oil pump 3 is communicated with the cavity of the right piston 102 of the steering oil cylinder 10 through a first oil outlet L of the one-way valve 61, the steering valve 63 and the steering brake valve block 62; when the steering cylinder 10 reaches the limit position or the pressure of the steering cylinder 10 exceeds the set pressure, the proportional overflow valve 66 is opened, and the oil from the hydraulic oil pump 3 is communicated with the hydraulic oil tank 1 through the proportional overflow valve 66 and the first oil return port T of the steering brake valve block 62.
A braking state: as shown in the attached drawing 4 of the specification, the steering valve 63 in the present invention is in the middle position under the action of the left and right spring forces, the oil inlet of the steering valve 63 is communicated with the first oil outlet R of the steering brake valve block 62, the oil return port of the steering valve 63 is communicated with the second oil outlet L of the steering brake valve block 62, and the oil inlet and outlet of the steering valve 63 are internally communicated; the brake valve 65 is positioned at the right side, and the oil inlet of the brake valve 65 is disconnected with the oil return port of the steering valve 63 and the first oil return port T of the steering brake valve block 62; the incoming oil of the hydraulic oil pump 3 is respectively communicated with the left piston rod 101 and the right piston rod 102 of the steering oil cylinder 10 through the check valve 61, the steering valve 63, the first oil outlet R of the steering brake valve block 62 and the second oil return port L of the steering brake valve block 62, when the steering oil cylinder 10 reaches the limit position or the pressure of the steering oil cylinder 10 exceeds the set pressure, the proportional overflow valve 66 is opened, and the incoming oil of the hydraulic oil pump 3 is communicated with the hydraulic oil tank 1 through the proportional overflow valve 66 and the first oil return port T of the steering brake valve block 62.
The utility model also provides an adopt tracked vehicle hydraulic system of hydraulic steering brake valves, this hydraulic system includes above-mentioned hydraulic braking steering valve group 6, this hydraulic system specifically includes hydraulic tank 1, inhales oil pipe 2, hydraulic oil pump 3, steering brake valves returns oil pipe 4, steering brake valves oil inlet pipe 5, hydraulic steering brake valves 6, steering cylinder returns oil pipe 7, steering cylinder right side oil inlet pipe 8, steering cylinder left side oil inlet pipe 9, steering cylinder 10, gearbox 11; an oil suction port of a hydraulic oil pump 3 is communicated with an oil outlet of a hydraulic oil tank 1 through an oil suction pipe 2, a first oil inlet P of a hydraulic steering brake valve group 6 is communicated with the oil pump 3 through a steering brake valve group oil inlet pipe 5, a first oil return T of the hydraulic steering brake valve group 6 is communicated with the hydraulic oil tank 1 through a steering brake valve group oil return pipe 4, a first oil outlet R of the hydraulic steering brake valve group 6 is communicated with a steering oil cylinder 6 through a steering oil cylinder left oil inlet pipe 9, a second oil outlet L of the hydraulic steering brake valve group 6 is communicated with the steering oil cylinder 10 through a steering oil cylinder right oil inlet pipe 8, a second oil return L of the hydraulic steering brake valve group 6 is communicated with the steering oil cylinder 10 through a steering oil cylinder oil return pipe 7, the steering oil cylinder 10 is installed at the front end of a gearbox 11, a left piston rod 101 and a right piston rod 102 are arranged on the steering oil cylinder 10, a left oil inlet and a right oil inlet are arranged in the steering oil cylinder 10, the left piston rod 101 is communicated with the inside of the steering oil inlet of the steering oil cylinder 10, a right piston rod 102 is communicated with the inside of the steering oil cylinder 10, a left brake rocker arm 111 and a right brake rocker 112 are arranged on the gearbox 11, the left piston rod 101 of the gearbox 11 is lapped on the left brake rocker 111 of the gearbox 11, the left rocker 111, the left rocker 102 of the left rocker 11, the left rocker 111, and the right brake of the right rocker 102 of the right brake of the left rocker 11, the right rocker 11.
The utility model provides an adopt tracked vehicle hydraulic system of hydraulic steering brake valves at the during operation theory of specifically turning to as follows: as shown in the attached fig. 2 and the attached fig. 3 of the specification, when the right coil in the steering valve 63 is energized, the steering valve 63 is located at the right position, the hydraulic oil in the hydraulic oil pump 3 flows to the first oil inlet P of the steering brake valve group 6 through the steering brake valve group oil inlet pipe 5, then flows out through the first oil outlet R of the steering brake valve group 6, flows into the left piston rod 101 of the steering oil cylinder 10 through the steering oil cylinder left oil inlet pipe 9 and acts on the left piston rod 101, and at this time, the left piston rod 101 drives the left steering rocker arm 111 on the transmission case 11 to realize steering to one side. Similarly, when the coil at the left end of the steering valve 63 is energized, the steering valve 63 is located at the left side position, the hydraulic oil in the hydraulic oil pump 3 flows to the first oil inlet P of the steering brake valve group 6 through the steering brake valve group oil inlet pipe 5, then flows out through the second oil outlet L of the steering brake valve group 6, flows into the right piston rod 102 of the steering oil cylinder 10 through the steering oil cylinder right oil inlet pipe 8 and acts on the right piston rod 102, and at this time, the right piston rod 102 drives the right steering rocker arm 112 on the transmission case 11 to realize steering to the other side. The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention.
Claims (6)
1. The hydraulic steering brake valve bank of the tracked vehicle is characterized by comprising a steering brake valve block (62), a check valve (61), a proportional overflow valve (66), a steering valve (63), a brake valve (65) and a fixed throttling port (64), wherein a hydraulic oil duct is processed inside the steering brake valve block (62), the check valve (61), the proportional overflow valve (66), the steering valve (63) and the brake valve (65) are integrally installed in the steering brake valve block (62), the check valve (61), the proportional overflow valve (66), the steering valve (63) and the brake valve (65) are communicated with one another through the inside of the steering brake valve block (62), and the fixed throttling port (64) is integrally installed in the hydraulic oil duct inside the steering brake valve block (62).
2. The hydraulic steering brake valve group for the tracked vehicle according to claim 1, wherein a first oil inlet, a first oil return port, a pressure feedback port, a first oil outlet, a second oil outlet and a second oil return port are arranged in the steering brake valve block (62), wherein the first oil inlet on the steering brake valve block (62) is communicated with an oil inlet pipeline of a hydraulic oil pump, the first oil return port on the steering brake valve block (62) is communicated with a hydraulic oil tank on the tracked vehicle through a pipeline, and the first oil outlet, the second oil outlet and the second oil return port on the steering brake valve block (62) are respectively communicated with oil ports on a steering oil cylinder.
3. A hydraulic steering brake valve group for a tracked vehicle according to claim 1, wherein further, in the steering brake valve block (62), the oil inlet of the check valve (61) is in communication with the first oil inlet; an oil outlet of the check valve (61) is communicated with a pressure feedback port in the steering brake valve block (62), an oil inlet of the proportional overflow valve (66) and an oil inlet of the steering valve (63); two oil outlets of the steering valve (63) are respectively communicated with a first oil outlet and a second oil outlet in the steering brake valve block (62); an oil inlet of the brake valve (65) is communicated with an oil return port of the steering valve (63), and an oil outlet of the brake valve (65) is communicated with an oil outlet of the proportional overflow valve (66) and a first oil return port in the steering brake valve block (62); the fixed throttling port (64) is communicated with the second oil return port and the first oil return port.
4. A tracked vehicle hydraulic system adopting the hydraulic steering brake valve bank in claims 1-3, characterized by comprising a hydraulic oil tank (1), an oil suction pipe (2), a hydraulic oil pump (3), a steering brake valve bank oil return pipe (4), a steering brake valve bank oil inlet pipe (5), a hydraulic steering brake valve bank (6), a steering oil cylinder oil return pipe (7), a steering oil cylinder right oil inlet pipe (8), a steering oil cylinder left oil inlet pipe (9), a steering oil cylinder (10) and a gearbox (11), wherein the oil suction port of the hydraulic oil pump (3) is communicated with the oil outlet of the hydraulic oil tank (1) through the oil suction pipe (2), the first oil inlet of the hydraulic steering brake valve bank (6) is communicated with the hydraulic oil pump (3) through the steering brake valve bank oil inlet pipe (5), the first oil return port of the hydraulic steering brake valve bank (6) is communicated with the hydraulic oil tank (1) through the steering brake valve bank oil return pipe (4), the first oil outlet of the hydraulic steering brake valve bank (6) is communicated with the steering oil cylinder (10) through the steering oil return pipe (10), the second oil return port of the hydraulic steering brake valve bank (6) is communicated with the steering oil cylinder (10), the steering oil cylinder (10) is arranged on the gearbox (11) and is integrally arranged with the gearbox (11).
5. A tracked vehicle hydraulic system employing a hydraulic steering and braking valve group according to claim 4, characterized in that, further, a left piston rod (101) and a right piston rod (102) are provided on the steering cylinder (10), a left oil inlet and a right oil inlet are provided in the steering cylinder (10), the left piston rod (101) is communicated with the inside of the left oil inlet in the steering cylinder (10), and the right piston rod (102) is communicated with the inside of the right oil inlet in the steering cylinder (10).
6. The hydraulic system of claim 5, wherein the transmission (11) is provided with a left braking rocker (111) and a right braking rocker (112), the left braking rocker (111) and the right braking rocker (112) are mounted with the transmission (11), the left piston rod (101) is connected to the left braking rocker (111) of the transmission (11), and the right piston rod (102) is connected to the right braking rocker (112) of the transmission (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222683354.3U CN218377124U (en) | 2022-10-12 | 2022-10-12 | Hydraulic steering brake valve set of tracked vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222683354.3U CN218377124U (en) | 2022-10-12 | 2022-10-12 | Hydraulic steering brake valve set of tracked vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218377124U true CN218377124U (en) | 2023-01-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222683354.3U Active CN218377124U (en) | 2022-10-12 | 2022-10-12 | Hydraulic steering brake valve set of tracked vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218377124U (en) |
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2022
- 2022-10-12 CN CN202222683354.3U patent/CN218377124U/en active Active
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