CN216812324U - Anti-deviation crawler walking hydraulic device - Google Patents
Anti-deviation crawler walking hydraulic device Download PDFInfo
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- CN216812324U CN216812324U CN202123006786.2U CN202123006786U CN216812324U CN 216812324 U CN216812324 U CN 216812324U CN 202123006786 U CN202123006786 U CN 202123006786U CN 216812324 U CN216812324 U CN 216812324U
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Abstract
The utility model relates to a deviation-preventing crawler traveling hydraulic device, and belongs to the technical field of hydraulic systems. Comprises a power module, a walking module and a control module; the power module and the control module are respectively communicated to the walking module; the power module comprises an oil tank, a hydraulic pump and a motor, wherein the hydraulic pump and the motor are connected with the oil tank; the walking module comprises a first walking motor and a second walking motor which are arranged in parallel, and the walking module is connected to the control module through the multi-way valve; the control module comprises a first precise pressure reducing valve, a second precise pressure reducing valve, a third precise pressure reducing valve and a fourth precise pressure reducing valve which are arranged in parallel, and the first precise pressure reducing valve, the second precise pressure reducing valve, the third precise pressure reducing valve and the fourth precise pressure reducing valve respectively control the forward rotation and the reverse rotation of the first walking motor and the second walking motor. The utility model can ensure the deviation prevention of the automatic drilling machine in the moving process, improve the passing capacity, automatically adjust the pressure output by the pump according to the external load change, reduce the energy loss of the hydraulic system, reduce the heating of the hydraulic system and improve the working efficiency of the hydraulic system.
Description
Technical Field
The utility model belongs to the technical field of hydraulic systems, and relates to a deviation-preventing crawler belt traveling hydraulic device.
Background
The traditional device adopts a mode of single pump and double motors to drive the crawler traveling device, and the rotation speeds of the left and right motors are asynchronous easily, so that the rotation speeds of the driving wheels of the left and right crawler are asynchronous, and the left and right crawler cannot be driven to keep synchronous traveling. Therefore, the common crawler traveling hydraulic system is easy to deviate when moving the crawler, and needs manual operation for correction every several meters of traveling.
SUMMERY OF THE UTILITY MODEL
In view of the above, the utility model aims to provide a deviation-preventing crawler belt traveling hydraulic device, which adopts a load-sensitive hydraulic system to automatically adjust the pressure output by a pump according to the external load change, and adopts a precise pressure reducing valve to control the precise displacement of a valve core of a load-sensitive multi-way valve, so as to keep the synchronous traveling of two motors.
In order to achieve the purpose, the utility model provides the following technical scheme:
a deviation-preventing crawler traveling hydraulic device comprises a power module, a traveling module and a control module; the power module and the control module are respectively communicated to the walking module; the power module comprises an oil tank, a hydraulic pump and a motor, wherein the hydraulic pump and the motor are connected with the oil tank; the walking module comprises a first walking motor and a second walking motor which are arranged in parallel, and the walking module is connected to the control module through the multi-way valve; the control module comprises a first precise pressure reducing valve, a second precise pressure reducing valve, a third precise pressure reducing valve and a fourth precise pressure reducing valve which are arranged in parallel, and the first precise pressure reducing valve, the second precise pressure reducing valve, the third precise pressure reducing valve and the fourth precise pressure reducing valve respectively control the forward rotation and the reverse rotation of the first walking motor and the second walking motor; the first precision pressure reducing valve, the second precision pressure reducing valve and the first hydraulic control switch valve are connected to the walking module in parallel; the third precision pressure reducing valve, the fourth precision pressure reducing valve and the second hydraulic control switch valve are connected to the walking module in parallel; the power module is connected to the walking module through a filter.
Optionally, the first precision pressure reducing valve, the second precision pressure reducing valve, the third precision pressure reducing valve and the fourth precision pressure reducing valve are all communicated to a pilot handle for controlling the walking module.
Optionally, the first hydraulic control switch valve and the second hydraulic control switch valve are connected to the walking module through a manual reversing valve.
Optionally, an oil outlet of the power module is connected with a port P of the multi-way valve, and a port T of the multi-way valve is connected with the oil tank; the M port of the multi-way valve is connected with a pressure gauge, the P port oil of the multi-way valve flows into a first valve block oil inlet and a second valve block oil inlet of the multi-way valve respectively through a bridge oil passage in the valve, a working oil port A and a working oil port B of a first valve block of the multi-way valve are connected with an oil inlet and an oil outlet of a first walking motor respectively, a working oil port A and a working oil port B of a second valve block of the multi-way valve are connected with an oil inlet and an oil outlet of a second walking motor respectively, the oil outlets of the first valve block and the second valve block flow back to an oil tank through an internal bridge oil passage, and an oil drainage port of the first walking motor and an oil drainage port of the second walking motor are connected with the oil tank so that the oil directly leaks back to the oil tank.
Optionally, the hydraulic pump in the power module is a load-sensitive pump, and a control oil port X is connected with a feedback oil port Ls of the multi-way valve; and a pilot oil port Pp of the multi-way valve is divided into two oil lines, one oil line is connected to the pilot handle, and the other oil line is connected to the manual reversing valve.
Optionally, one path of oil of the pilot oil port Pp of the multi-way valve is connected to an oil inlet of the manual reversing valve, an oil outlet of the manual reversing valve is divided into two paths of oil, the other path of oil is connected with a hydraulic control port of the first hydraulic control switch valve, the other path of oil is connected with a hydraulic control port of the second hydraulic control switch, and the first hydraulic control switch valve and the second hydraulic control switch valve are connected in parallel.
Optionally, the pilot handle is of a two-linkage and piece-splitting structure and comprises a first handle and a second handle, wherein two working oil ports a and B of the first handle are divided into two paths of oil, wherein one path of oil is respectively connected with oil inlets of a first precision pressure reducing valve and a second precision pressure reducing valve, an oil outlet of the first precision pressure reducing valve is connected with an upper hydraulic control port of a first linkage valve plate of the multi-way valve, and an oil outlet of the second precision pressure reducing valve is connected with a lower hydraulic control port of the first linkage valve plate of the multi-way valve; the other path of oil is respectively connected with an oil inlet of a first hydraulic control switch valve, an oil outlet of the first hydraulic control switch valve is provided with two paths of oil, one path of oil is connected with a first valve plate upper hydraulic control port of the multi-way valve, and the other path of oil is connected with a first valve plate lower hydraulic control port of the multi-way valve;
two working oil ports A and B of the second handle are divided into two paths of oil, wherein one path of oil is respectively connected with oil inlets of a third precision pressure reducing valve and a fourth precision pressure reducing valve, an oil outlet of the third precision pressure reducing valve is connected with an upper hydraulic control port of a second valve block of the multi-way valve, and an oil outlet of the fourth precision pressure reducing valve is connected with a lower hydraulic control port of the second valve block of the multi-way valve; and the other path of oil is respectively connected with an oil inlet of a second hydraulic switch valve, an oil outlet of the second hydraulic switch valve contains two paths of oil, one of the two paths of oil is connected with an upper hydraulic control port of a second valve block of the multi-way valve, and the other path of oil is connected with a lower hydraulic control port of the second valve block of the multi-way valve.
Optionally, the first precision pressure reducing valve, the second precision pressure reducing valve, the third precision pressure reducing valve and the fourth precision pressure reducing valve are all formed by connecting a fixed value pressure reducing valve and a check valve in parallel.
The utility model has the beneficial effects that:
the utility model discloses a deviation-preventing crawler belt walking hydraulic device, which can adjust a crawler belt to synchronously walk according to needs, and can keep the double crawler belts in synchronization all the time when the crawler belt is operated to walk again without frequent correction. When the system is applied to the traveling machinery, the deviation prevention of the traveling machinery in the moving process can be ensured and the passing capacity can be improved when the system moves the machine, particularly passes through a narrow road section. The adopted load sensitive hydraulic system can automatically adjust the pressure output by the pump according to the change of external load, thereby reducing the energy loss of the hydraulic system, reducing the heating of the hydraulic system and improving the working efficiency of the hydraulic system.
Additional advantages, objects, and features of the utility model will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the utility model. The objectives and other advantages of the utility model may be realized and attained by the means of the instrumentalities and combinations particularly pointed out hereinafter.
Drawings
For the purposes of promoting a better understanding of the objects, aspects and advantages of the utility model, reference will now be made to the following detailed description taken in conjunction with the accompanying drawings in which:
FIG. 1 is a schematic diagram of the system of the present invention.
Reference numerals: 1-an oil tank; 2, a motor; 3-a hydraulic pump; 4-a filter; 5-a manual reversing valve; 6-a pilot handle; 7-a first pilot-operated on-off valve; 8-a second hydraulic switch valve; 9-a first precision pressure reducing valve; 10-a second precision pressure reducing valve; 11-a third precision pressure reducing valve; 12-a fourth precision pressure reducing valve; 13-a multi-way valve; 14-a first travel motor; 15-a second travel motor; 16-pressure gauge.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The utility model is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention. It should be noted that the drawings provided in the following embodiments are only for illustrating the basic idea of the present invention in a schematic way, and the features in the following embodiments and examples may be combined with each other without conflict.
Wherein the showings are for the purpose of illustrating the utility model only and not for the purpose of limiting the same, and in which there is shown by way of illustration only and not in the drawings in which there is no intention to limit the utility model thereto; to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted.
The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there is an orientation or positional relationship indicated by terms such as "upper", "lower", "left", "right", "front", "rear", etc., based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not an indication or suggestion that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes, and are not to be construed as limiting the present invention, and the specific meaning of the terms may be understood by those skilled in the art according to specific situations.
Referring to fig. 1, the present invention mainly includes an oil tank 1, a motor 2, a hydraulic pump 3, a filter 4, a manual directional valve 5, a pilot handle 6, a first hydraulic control switch valve 7, a second hydraulic control switch valve 8, a first precision pressure reducing valve 9, a second precision pressure reducing valve 10, a third precision pressure reducing valve 11, a fourth precision pressure reducing valve 12, a multi-way valve 13, a first traveling motor 14, a second traveling motor 15, and a pressure gauge 16.
The oil tank 1 is a part for storing hydraulic oil in a hydraulic system, and also plays a role in cooling and radiating to a certain extent; the motor 2 is an intrinsically safe explosion-proof three-phase asynchronous motor and can provide power input for the hydraulic pump 3; the hydraulic pump 3 is a load-sensitive pump, can output corresponding flow according to the required control quantity, can realize the conversion from mechanical energy to hydraulic energy under the drive of the motor 2, and provides power for the whole hydraulic system; the filter 4 is a high-pressure filter, is a hydraulic auxiliary, and can filter impurities for a hydraulic system, so that the cleanliness of oil of the hydraulic system is ensured, and the oil pollution is prevented; the manual reversing valve 5 is a two-position three-way reversing valve, is provided with a steel ball positioning device, can switch the oil flow direction of oil through an operating handle, and can switch the hydraulic system between a deviation-preventing state and a common state; the pilot handle 6 is a hydraulic control duplex handle, comprises a left handle (a first handle) and a right handle (a second handle), and can control the first walking motor 14 and the second walking motor 15 to rotate anticlockwise and clockwise; the first hydraulic control switch valve 7 and the second hydraulic control switch valve 8 are two-position four-way switch valves; the first precise pressure reducing valve 9, the second precise pressure reducing valve 10, the third precise pressure reducing valve 11 and the fourth precise pressure reducing valve 12 are all composed of a fixed value pressure reducing valve and a one-way valve, control pressure from a pilot handle 6 can precisely control the valve core displacement of the multi-way valve 13 through the adjusting function of the precise pressure reducing valves, the multi-way valve 13 is a load sensitive multi-way valve, adopts a split structure and comprises a two-unit three-position four-way hydraulic reversing valve, the load sensitive multi-way valve is a valve which can feed back pressure, flow and power change signals to the multi-way valve to realize the control function, and can precisely control the flow of a first walking motor 14 and a second walking motor 15, so that the walking synchronization of a left crawler and a right crawler is ensured, and the deviation is prevented; the first traveling motor 14 and the second traveling motor 15 are hydraulic actuators capable of converting hydraulic energy into mechanical energy to realize forward and reverse bidirectional rotation, the first traveling motor 14 is mounted on a driving wheel of the left crawler belt, the second traveling motor 15 is mounted on a driving wheel of the right crawler belt, and forward, backward and turning of the crawler belt can be controlled by forward and reverse rotation of the first traveling motor 14 and the second traveling motor 15. Finally, the pressure gauge 16 is a hydraulic auxiliary for monitoring the pressure of the hydraulic system in real time.
The motor 2 is connected with the hydraulic pump 3, the hydraulic pump 3 is a load-sensitive pump, an oil suction port of the hydraulic pump is connected with the oil tank 1, an oil outlet of the hydraulic pump is connected with an oil inlet of the filter 4, an oil outlet of the filter 4 is connected with a port P of the multi-way valve 13, a port T of the multi-way valve is connected with the oil tank 1, a port M of the multi-way valve is connected with the pressure gauge 16, oil from the port P of the multi-way valve 13 flows into a first valve plate oil inlet and a second valve plate oil inlet of the multi-way valve 13 through a bridge oil path in the valve respectively, working oil ports (A and B) of the first valve plate of the multi-way valve 13 are connected with an oil inlet and an oil outlet of the first walking motor 14 respectively, working oil ports (A and B) of the second valve plate of the multi-way valve 13 are connected with an oil inlet and an oil outlet of the second walking motor 15 respectively, and oil outlets of the first valve plate and the second valve plate flow back to the oil tank 1 through an internal bridge oil path. The oil drainage ports of the first walking motor 14 and the second walking motor 15 are connected with the oil tank 1, so that oil in the walking motor shell can be directly drained back to the oil tank. Meanwhile, a control oil port (X port) of the hydraulic pump 3 is connected with a load feedback port (Ls port) of the multi-way valve 13, so that the load sensitivity of flow and pressure is realized. A pilot oil port (Pp port) of the load sensitive multi-way valve 13 is divided into two paths of oil, one path is connected with the pilot handle 6, and the other path is connected with the manual reversing valve 5.
The pilot handle 6 is of a two-connection and piece-separation type structure and comprises a left handle and a right handle, wherein two working oil ports (a port A and a port B) of the left handle are divided into two paths of oil, wherein one path of oil (containing two paths of oil) is respectively connected with oil inlets of a first precision pressure reducing valve 9 and a second precision pressure reducing valve 10, an oil outlet of the first precision pressure reducing valve 9 is connected with an upper hydraulic control port of a first connection valve plate of the multi-way valve 13, and an oil outlet of the second precision pressure reducing valve 10 is connected with a lower hydraulic control port of the first connection valve plate of the multi-way valve 13; another way fluid (containing two strands of fluid) is connected with the oil inlet of first hydraulic control ooff valve 7 respectively, and there are two strands of fluid in the oil-out of first hydraulic control ooff valve 7, and one of them fluid inserts the first allies oneself with valve block upper hydraulic control mouth of multiple unit valve 13, and another fluid inserts the first allies oneself with valve block lower hydraulic control mouth of multiple unit valve 13.
Similarly, two working oil ports (a port and a port B) of the right handle are divided into two paths of oil, wherein one path of oil (containing two paths of oil) is respectively connected with oil inlets of a third precision pressure reducing valve 11 and a fourth precision pressure reducing valve 12, an oil outlet of the third precision pressure reducing valve 11 is connected with an upper hydraulic control port of a second coupling valve plate of the multi-way valve 13, and an oil outlet of the fourth precision pressure reducing valve 12 is connected with a lower hydraulic control port of the second coupling valve plate of the multi-way valve 13; another way fluid (containing two strands of fluid) is connected with the oil inlet of second hydraulic switch valve 8 respectively, and the oil-out of second hydraulic switch valve 8 contains two strands of fluid, and wherein one strand of fluid inserts the second valve block of multiple unit valve 13 and goes up the liquid accuse mouth, and another strand of fluid inserts the second valve block of multiple unit valve 13 and goes down the liquid accuse mouth.
Meanwhile, the other path of oil from the pilot oil port (Pp port) of the multi-way valve 13 is connected to an oil inlet of the manual directional valve 5, an oil outlet of the manual directional valve 5 is divided into two paths of oil, one path of oil is connected with a hydraulic control port of the first hydraulic control switch valve 7, the other path of oil is connected with the second hydraulic control switch valve 8, and the first hydraulic control switch valve 7 and the second hydraulic control switch valve 8 are connected in parallel.
When the motor 2 rotates, the hydraulic pump 3 is driven to suck oil from the oil tank 1, the oil is filtered under the action of the high-pressure filter 4, the oil enters an oil inlet (P port) of the multi-way valve 13 and is shunted through the interior of the multi-way valve, and one path of oil forms a control oil source through a pilot oil port (Pp port) and acts on the manual reversing valve 5 and the pilot handle 6; the other path of oil forms a power oil source, flows into the first linkage valve plate and the second linkage valve through a bridge oil path in the multi-way valve 13, and is distributed to act on the first walking motor 14 and the second walking motor 15, so that the motors are driven to rotate, and the crawler belt is driven to walk. The positive rotation and the reverse rotation of the motor can be controlled through the control oil circuit, so that the crawler belt is driven to move forwards and backwards, and return oil in the multi-way valve 13 returns to the oil tank 1 through an oil return port (T port). The pressure gauge 16 is capable of monitoring the pressure of the system in real time.
The utility model mainly comprises two working states.
(I) deviation prevention state:
the manual reversing valve 5 is operated to place the handle in a deviation prevention state, the state shown in the attached drawing is that the handle is pushed upwards, the lower position of the manual reversing valve is connected, the control oil source from the Pp port only flows into the pilot handle 6, the handle of the manual reversing valve 5 is pulled downwards, the system is in the deviation prevention state, and the control oil flowing into the manual shifting valve (5) is cut off. Then, the control oil is divided into two paths to pass through a gap bridge oil path in the pilot handle 6, the two paths respectively enter the left handle and the right handle, the left handle and the right handle are operated by two hands according to the directions marked by the drawing, the handles are pulled to the left, at the moment, the control oil enters the oil, the left handle flows in from the first precise pressure reducing valve 9 and further acts on an upper hydraulic control port of a first link plate of the multi-way valve 13, at the moment, an upper machine of the first link plate is communicated, a power oil source from a main oil path flows into the first walking motor 14 through the upper machine, the first walking motor 14 rotates anticlockwise, and lower control oil of the first link plate finally flows back to the oil tank 1 through the one-way valve in the second precise pressure reducing valve 10 and oil is drained through the left handle. The right handle flows through the third precise pressure reducing valve 11 and flows into an upper hydraulic control port of a second linkage plate of the multi-way valve 13, at the moment, the upper machine of the second linkage plate can be communicated, a power oil source from a main oil way flows into the second walking motor 15 through the upper machine, the second walking motor 15 rotates anticlockwise, and lower control oil of the second linkage plate finally flows back to the oil tank 1 through the right handle oil drainage through the check valve inside the fourth precise pressure reducing valve 12.
Similarly, the left and right handles are operated by two hands to break the handles right, at this time, oil is controlled to enter, the left handle flows in from the second precise pressure reducing valve 10 and further acts on a lower hydraulic control port of a first linkage plate of the multi-way valve 13, at this time, a lower position of the first linkage plate can be switched on, power source oil from a main oil way flows into the first walking motor 14 through the lower position, the first walking motor 14 rotates clockwise, and upper control oil of the first linkage plate finally flows back to the oil tank 1 through oil drainage of the left handle through the check valve inside the first precise pressure reducing valve 9. The right handle flows through the fourth precise pressure reducing valve 12 and flows into a lower hydraulic control port of a second linkage plate of the multi-way valve 13, at the moment, a lower position machine of the second linkage plate can be communicated, a power source from a main oil way flows into a second walking motor 15 through the lower position, the second walking motor 15 rotates clockwise, and lower position control oil of the second linkage plate finally flows back to the oil tank 1 through oil drainage of the right handle through a check valve in the third precise pressure reducing valve 11.
(II) a common state:
the manual reversing valve 5 is operated, the handle is placed in a normal state, the state is shown in the drawing, namely the handle is pulled downwards, the upper part of the manual reversing valve is communicated, a control oil source from a pilot oil port (Pp port) is divided into two paths, one path of oil flows through the manual reversing valve 5 and then acts on the first hydraulic control switch valve 7 and the second hydraulic control switch valve 8, the lower parts of the first hydraulic control switch valve 7 and the second hydraulic control switch valve 8 are communicated at the moment, and the switch valves are opened to form a passage. The other path of the oil flows into a pilot handle 6, the control oil is divided into two paths to pass through a bridge oil passage in the pilot handle 6 and respectively enter a left handle and a right handle, the left handle and the right handle are operated by two hands according to the direction marked by the figure, the handles are pulled off leftwards, at the moment, the control oil enters the oil, the left handle flows in from a first hydraulic control switch valve 7 and further acts on an upper hydraulic control port of a first valve plate of a multi-way valve 13, at the moment, the upper machine of the first valve plate can be connected, a power oil source from a main oil passage flows into a first traveling motor 14 through the upper machine, the first traveling motor 14 rotates anticlockwise, lower control oil of the first valve plate flows out through the first hydraulic control switch valve 7, and finally the oil is drained back to the oil tank 1 through the left operating handle. The right handle controls the oil source to flow in through the second hydraulic control switch valve 8, and then acts on the upper hydraulic control port of the second linkage plate of the multi-way valve 13, at the moment, the upper machine of the second linkage plate can be switched on, the main oil way power source flows into the second walking motor 15 through the upper machine, the first walking motor 15 rotates anticlockwise, the upper control oil of the second linkage plate flows out through the second hydraulic control switch valve 8, and finally the oil is drained through the right operating handle and returns to the oil tank 1.
Similarly, according to the direction marked by the figure, the left and right operating handles are operated by two hands, the handles are pulled off to the right, at this time, oil is controlled to enter, the left handle flows in from the first hydraulic control switch valve 7 and further acts on the lower hydraulic control port of the first valve plate of the multi-way valve 13, at this time, the lower position of the first valve plate can be connected, the power source oil from the main oil way flows into the first traveling motor 14 through the lower position, and the first traveling motor 14 rotates clockwise; the upper control oil of the first linkage plate flows out through the first hydraulic control switch valve 7 and finally returns to the oil tank 1 through the oil drainage of the left operating handle. The right handle flows through the second hydraulic switch valve 8 and flows into a lower hydraulic control port of a second linkage plate of the multi-way valve 13, at the moment, a lower position machine of the second linkage plate can be connected, a power source from a main oil way flows into the second walking motor 15 through the lower position machine, the second walking motor 15 rotates clockwise, and upper control oil of the second linkage plate flows back to the oil tank 1 through oil drainage of the right handle through the second hydraulic switch valve 8.
The hydraulic pump 3 is a load-sensitive pump; the multi-way valve 13 is a load-sensitive multi-way valve, and a control oil port (an X port) of the hydraulic pump 3 is connected with a load-sensitive feedback port (an Ls port) of the multi-way valve 13. Through mutual cooperation of the load sensitive systems of the hydraulic pump 3 and the multi-way valve 13, when loads from the first walking motor 14 and the second walking motor 15 are changed, the hydraulic pump 3 and the multi-way valve 13 can correspondingly and automatically adjust output pressure, corresponding flow is output according to required control quantity, and 'supply on demand' is realized, so that the whole hydraulic system can realize the improvement of efficiency and reduce energy consumption loss.
Finally, the above embodiments are only intended to illustrate the technical solutions of the present invention and not to limit the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that modifications or equivalent substitutions may be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all of them should be covered by the claims of the present invention.
Claims (8)
1. The utility model provides a prevent off tracking crawler travel hydraulic means which characterized in that: comprises a power module, a walking module and a control module; the power module and the control module are respectively communicated to the walking module; the power module comprises an oil tank, a hydraulic pump and a motor, wherein the hydraulic pump and the motor are connected with the oil tank; the walking module comprises a first walking motor and a second walking motor which are arranged in parallel, and the walking module is connected to the control module through the multi-way valve; the control module comprises a first precise pressure reducing valve, a second precise pressure reducing valve, a third precise pressure reducing valve and a fourth precise pressure reducing valve which are arranged in parallel, and the first precise pressure reducing valve, the second precise pressure reducing valve, the third precise pressure reducing valve and the fourth precise pressure reducing valve respectively control the forward rotation and the reverse rotation of the first walking motor and the second walking motor; the first precision pressure reducing valve, the second precision pressure reducing valve and the first hydraulic control switch valve are connected to the walking module in parallel; the third precision pressure reducing valve, the fourth precision pressure reducing valve and the second hydraulic control switch valve are connected to the walking module in parallel; the power module is connected to the walking module through a filter.
2. The deviation-preventing crawler belt walking hydraulic device according to claim 1, wherein: the first precision reducing valve, the second precision reducing valve, the third precision reducing valve and the fourth precision reducing valve are all communicated to a pilot handle used for controlling the walking module.
3. The deviation-preventing crawler belt walking hydraulic device according to claim 2, wherein: the first hydraulic control switch valve and the second hydraulic control switch valve are connected to the walking module through manual reversing valves.
4. The deviation-preventing crawler belt walking hydraulic device according to claim 3, wherein: an oil outlet of the power module is connected with a port P of the multi-way valve, and a port T of the multi-way valve is connected with the oil tank; the M port of the multi-way valve is connected with a pressure gauge, the P port oil of the multi-way valve flows into a first valve block oil inlet and a second valve block oil inlet of the multi-way valve respectively through a bridge oil passage in the valve, a working oil port A and a working oil port B of a first valve block of the multi-way valve are connected with an oil inlet and an oil outlet of a first walking motor respectively, a working oil port A and a working oil port B of a second valve block of the multi-way valve are connected with an oil inlet and an oil outlet of a second walking motor respectively, the oil outlets of the first valve block and the second valve block flow back to an oil tank through an internal bridge oil passage, and an oil drainage port of the first walking motor and an oil drainage port of the second walking motor are connected with the oil tank so that the oil directly leaks back to the oil tank.
5. The deviation-preventing crawler belt walking hydraulic device according to claim 3, wherein: the hydraulic pump in the power module is a load sensitive pump, and a control oil port X port of the load sensitive pump is connected with a feedback oil port Ls port of the multi-way valve; and a pilot oil port Pp of the multi-way valve is divided into two oil lines, one oil line is connected to the pilot handle, and the other oil line is connected to the manual reversing valve.
6. The deviation-preventing crawler belt traveling hydraulic device according to claim 5, wherein: the oil of the pilot oil port Pp mouth of the multi-way valve is connected with the oil inlet of the manual reversing valve, the oil outlet of the manual reversing valve is divided into two ways of oil, the oil of the same way is connected with the hydraulic control port of the first hydraulic control switch valve, the other way is connected with the hydraulic control port of the second hydraulic control switch valve, and the first hydraulic control switch valve and the second hydraulic control switch valve are connected in parallel.
7. The deviation-preventing crawler belt walking hydraulic device according to claim 2, wherein: the pilot handle is of a two-connection and piece-splitting structure and comprises a first handle and a second handle, wherein two working oil ports A and B of the first handle are divided into two paths of oil, one path of oil is respectively connected with oil inlets of a first precision pressure reducing valve and a second precision pressure reducing valve, an oil outlet of the first precision pressure reducing valve is connected with an upper hydraulic control port of a first valve plate of the multi-way valve, and an oil outlet of the second precision pressure reducing valve is connected with a lower hydraulic control port of the first valve plate of the multi-way valve; the other path of oil is respectively connected with an oil inlet of a first hydraulic control switch valve, an oil outlet of the first hydraulic control switch valve is provided with two paths of oil, one path of oil is connected with a first valve plate upper hydraulic control port of the multi-way valve, and the other path of oil is connected with a first valve plate lower hydraulic control port of the multi-way valve;
two working oil ports A and B of the second handle are divided into two paths of oil, wherein one path of oil is respectively connected with oil inlets of a third precision pressure reducing valve and a fourth precision pressure reducing valve, an oil outlet of the third precision pressure reducing valve is connected with an upper hydraulic control port of a second coupling valve plate of the multi-way valve, and an oil outlet of the fourth precision pressure reducing valve is connected with a lower hydraulic control port of the second coupling valve plate of the multi-way valve; and the other path of oil is respectively connected with an oil inlet of a second hydraulic switch valve, an oil outlet of the second hydraulic switch valve contains two paths of oil, one of the two paths of oil is connected with an upper hydraulic control port of a second valve block of the multi-way valve, and the other path of oil is connected with a lower hydraulic control port of the second valve block of the multi-way valve.
8. The deviation-preventing crawler belt walking hydraulic device according to claim 1, wherein: the first precision pressure reducing valve, the second precision pressure reducing valve, the third precision pressure reducing valve and the fourth precision pressure reducing valve are all formed by connecting a fixed value pressure reducing valve and a check valve in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123006786.2U CN216812324U (en) | 2021-12-02 | 2021-12-02 | Anti-deviation crawler walking hydraulic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123006786.2U CN216812324U (en) | 2021-12-02 | 2021-12-02 | Anti-deviation crawler walking hydraulic device |
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| Publication Number | Publication Date |
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| CN216812324U true CN216812324U (en) | 2022-06-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2023097872A1 (en) * | 2021-12-02 | 2023-06-08 | 中煤科工集团重庆研究院有限公司 | Anti-deviation crawler travel hydraulic system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023097872A1 (en) * | 2021-12-02 | 2023-06-08 | 中煤科工集团重庆研究院有限公司 | Anti-deviation crawler travel hydraulic system |
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