CN219953786U - Double-speed hydraulic system of multi-motor driving rotary mechanism - Google Patents
Double-speed hydraulic system of multi-motor driving rotary mechanism Download PDFInfo
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- CN219953786U CN219953786U CN202223057649.6U CN202223057649U CN219953786U CN 219953786 U CN219953786 U CN 219953786U CN 202223057649 U CN202223057649 U CN 202223057649U CN 219953786 U CN219953786 U CN 219953786U
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- 230000007246 mechanism Effects 0.000 title claims abstract description 37
- 239000003921 oil Substances 0.000 claims abstract description 128
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 23
- 230000008901 benefit Effects 0.000 abstract description 5
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000012530 fluid Substances 0.000 description 6
- 238000005553 drilling Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Abstract
A two-speed hydraulic system for a multi-motor driven swing mechanism, characterized by: one end of the double-speed valve group is connected to the load oil circuit A and the other end of the load oil circuit B, and the other ends of the double-speed valve group are respectively connected to the upper hydraulic motor and the lower hydraulic motor; the motor is connected with the variable pump, the oil suction port of the variable pump is connected to the oil tank, the pressure gauge is arranged on an oil outlet pipeline of the variable pump, the oil outlet of the variable pump is connected to an oil inlet of the load sensitive valve, a load port of the load sensitive valve is connected to the load oil port A and the load oil path B, a feedback port of the load sensitive valve is connected to a feedback port of the variable pump, and a control oil port of the pilot hydraulic control handle is connected to a control oil port of the load sensitive valve. The utility model has the advantages that: the double-speed rotation working condition is realized through the interconnection of the double-speed valve blocks and the four hydraulic motors, the requirement of the actual working condition is met, the pipeline arrangement is replaced by the hydraulic oil way valve blocks, the production cost and the maintenance cost are reduced, and the economic benefit of enterprises is improved.
Description
Technical Field
The utility model relates to the technical field of hydraulic pressure, in particular to a double-speed hydraulic system of a multi-motor driving slewing mechanism.
Background
At present, with the continuous increase of the diameter of a gas extraction hole under a coal mine, higher requirements are put forward on the rotation torque of a crawler type full-hydraulic tunnel drilling machine, and a compact type hydraulic motor driven rotation mechanism is required due to the limited working space under the coal mine. With the increase of the output torque of the slewing mechanism of the drilling machine, under the condition of keeping the speed ratio of the reduction gearbox basically unchanged, the number of the hydraulic motors is increased from 1 to 2 or even more, and the continuous increase of the output torque of the slewing mechanism can be realized. Because of different geological conditions under the coal mine, unnecessary power loss can be generated by uniformly increasing the torque and the rotating speed of the slewing mechanism. When the existing hydraulic system realizes simultaneous operation of a plurality of motors, a plurality of reversing valves are required to simultaneously operate, the connection of hydraulic pipelines is disordered, and the maintenance is difficult.
Disclosure of Invention
The utility model aims to provide a double-speed hydraulic system with a plurality of motors for driving a rotary mechanism, which has the advantages of compact structure of the rotary device, reasonable hydraulic pipeline, and capability of meeting the actual working condition demands under different working conditions and reducing the power loss of a drilling machine.
The utility model provides a double-speed hydraulic system of a multi-motor driving slewing mechanism, which is characterized in that: the double-speed hydraulic system of the multi-motor driving slewing mechanism comprises an oil tank, a motor, a variable pump, a pressure gauge, a load sensitive valve, a pilot hydraulic control handle, a load oil circuit A, a load oil circuit B, a hydraulic motor and a double-speed valve group;
wherein: one end of the double-speed valve group is connected to the load oil circuit A and the other end of the load oil circuit B, and the other ends of the double-speed valve group are respectively connected to the upper hydraulic motor and the lower hydraulic motor; the motor is connected with the variable pump, the oil suction port of the variable pump is connected to the oil tank, the pressure gauge is arranged on an oil outlet pipeline of the variable pump, the oil outlet of the variable pump is connected to an oil inlet of the load sensitive valve, a load port of the load sensitive valve is connected to the load oil circuit A and the load oil circuit B, a feedback port of the load sensitive valve is connected to a feedback port of the variable pump, and a control oil port of the pilot hydraulic control handle is connected to a control oil port of the load sensitive valve.
The double-speed valve group comprises a reversing valve and a hydraulic oil way valve block;
the middle position of the reversing valve can be an M-shaped two-position four-way reversing valve, the reversing valve is arranged on the hydraulic oil way valve block, and an oil port of the reversing valve is communicated with a corresponding oil passage on the hydraulic oil way valve block.
The SA port of the hydraulic oil way valve block is respectively connected with A1 and A2 of the upper hydraulic motor, and the SB port is respectively connected with B1 and B2 of the upper hydraulic motor to form a parallel oil way of the double upper hydraulic motors; the XA port is respectively connected with A3 and A4 of the lower hydraulic motor, and the XB port is respectively connected with B3 and B4 of the lower hydraulic motor to form a parallel oil path of the double lower hydraulic motors; the oil drain port L is connected with an oil return tank after being converged;
the middle position function of the reversing valve is an M-shaped plate type two-position four-way manual reversing valve which is arranged on a hydraulic oil way valve block, oil ports are correspondingly connected, and when the middle position function is an M-shaped reversing valve at an initial position, the oil ports P of the reversing valve are communicated with T, and A and B are respectively sealed. The initial position is the high rotational speed of slewing mechanism, low torque output operating mode, and fluid passes through load oil circuit A gets into hydraulic circuit valve piece A mouth, directly gets into the A1 of the hydraulic motor of two upper portions, A2 mouth through the SA mouth, and the motor is parallelly connected rotatory, and output torque, then fluid by the B1 of the hydraulic motor of two upper portions, B2 mouth pass through hydraulic circuit valve piece SB mouth gets into the switching-over valve, through P, T mouth and hydraulic circuit piece XA mouth, inflow two lower hydraulic motor's A3, A4, the hydraulic motor of two lower portions with the series follow-up of two upper portions, finally fluid is returned the oil tank by the B3 of the hydraulic motor of two lower portions, the T mouth of load oil circuit B, load sensitive valve. The reversing valve core is reversed to the right position, the reversing mechanism is under the working condition of low rotating speed and high torque output at the moment, oil enters the port A of the hydraulic oil way valve block through the load oil way A, one path of oil directly enters the ports A1 and A2 of the hydraulic motors at the double upper parts through the oil port SA, the other path of oil directly enters the ports A3 and A4 of the hydraulic motors at the double lower parts through the load port A, T of the reversing valve and the port XA of the hydraulic oil way block, the four motors are rotated in parallel to output torque, and the oil return oil of the hydraulic motors at the upper parts enters the reversing valve P, B port through the oil valves of the hydraulic oil way block and the oil return oil B3 and B4 of the hydraulic motors at the double lower parts are converged, and finally the oil returns to the oil tank through the load oil way B and the load sensitive valve.
The number of the hydraulic motors is 4.
The reversing valve is of a manual, hydraulic or electric control structure.
The reversing valve can be a hydraulic control reversing valve, and the control end is communicated with the control handle and used for switching the working position of the reversing valve.
The reversing valve can also be an electromagnetic reversing valve, and the controller is used for controlling the electrifying and the de-electrifying of the reversing valve, so that the switching of the working positions of the reversing valve is realized.
The hydraulic motors are 4 in number and are respectively arranged at four corners of the slewing mechanism to jointly form a slewing device of the drilling machine, the whole structure is compact, and the slewing mechanism is driven to output torque through rotation of the hydraulic motors. One end of the double-speed valve group is connected to the load oil circuit A and the load oil circuit B, and the other end of the double-speed valve group is connected to the upper double-hydraulic motor and the lower double-hydraulic motor respectively. And by switching the double-speed valve group, the double-speed rotation of the slewing mechanism is driven, so that the high rotating speed, the low torque output or the low rotating speed and the high torque output of the slewing mechanism are realized.
The variable pump oil suction port is connected to the oil tank, the oil outlet is connected to the load sensitive valve oil inlet, the load port of the load sensitive valve is connected to the load oil path A and the load oil path B respectively, the load sensitive valve feedback port is connected to the variable pump feedback port, and the control oil port of the pilot hydraulic control handle is connected to the control oil port of the load sensitive valve. The opening size of the valve core of the load sensitive valve is proportionally controlled by pushing and pulling the angle change of the valve rod of the pilot hydraulic control handle, so that the speed of the hydraulic motor is controlled, and the revolving speed is ensured to be changed along with the angle proportion of the valve rod of the push-pull handle in the respective working condition of the revolving mechanism under the double-speed working condition.
The utility model has the advantages that:
according to the double-speed hydraulic system of the multi-motor driving slewing mechanism, the double-speed valve blocks and the four hydraulic motors are connected with each other, so that the double-speed slewing working condition is realized, the requirements of actual working conditions, namely high rotating speed, low torque, low rotating speed and high torque are met, the slewing mechanism is output, meanwhile, the hydraulic oil way valve blocks are used for replacing pipeline arrangement, the production cost and the maintenance cost are reduced, and the economic benefit of enterprises is improved.
Drawings
The utility model will be described in further detail with reference to the accompanying drawings and embodiments:
FIG. 1 is a schematic diagram of the principle and structure of a hydraulic system;
FIG. 2 is a front view of a hydraulic motor installation;
FIG. 3 is a side view of a hydraulic motor installation;
in the figure, 1, an oil tank, 2, a motor, 3, a variable pump, 4, a pressure gauge, 5, a load sensitive valve, 6, a pilot hydraulic control handle, 7, a load oil circuit A,8, a load oil circuit B,9, a hydraulic motor, 10 and a double-speed valve group.
Detailed Description
Example 1
The present embodiment provides a two-speed hydraulic system of a multi-motor driven swing mechanism, characterized in that: the double-speed hydraulic system of the multi-motor driving slewing mechanism comprises an oil tank 1, a motor 2, a variable pump 3, a pressure gauge 4, a load sensitive valve 5, a pilot hydraulic control handle 6, a load oil circuit A7, a load oil circuit B8, a hydraulic motor 9 and a double-speed valve group 10;
wherein: one end of the double-speed valve group 10 is connected to the load oil circuit A7 and the load oil circuit B8, and the other end is connected to the upper and lower hydraulic motors 9 respectively; the motor 2 is connected with the variable pump 3, an oil suction port of the variable pump 3 is connected to the oil tank 1, the pressure gauge 4 is arranged on an oil outlet pipeline of the variable pump 3, an oil outlet of the variable pump 3 is connected to an oil inlet of the load sensitive valve 5, a load port of the load sensitive valve 5 is connected to the load oil circuit A7 and the load oil circuit B8, a feedback port of the load sensitive valve 5 is connected to a feedback port of the variable pump 3, and a control oil port of the pilot hydraulic control handle 6 is connected to a control oil port of the load sensitive valve 5.
The double-speed valve group 10 comprises a reversing valve and a hydraulic oil way valve block; the middle position of the reversing valve can be an M-shaped two-position four-way reversing valve, the reversing valve is arranged on the hydraulic oil way valve block, and an oil port of the reversing valve is communicated with a corresponding oil passage on the hydraulic oil way valve block.
The middle position of the reversing valve can be an M-shaped two-position four-way reversing valve, the reversing valve is arranged on the hydraulic oil way valve block, and an oil port of the reversing valve is communicated with a corresponding oil passage on the hydraulic oil way valve block.
The SA port of the hydraulic oil way valve block is respectively connected with A1 and A2 of the upper hydraulic motor, and the SB port is respectively connected with B1 and B2 of the upper hydraulic motor to form a parallel oil way of the double upper hydraulic motors; the XA port is respectively connected with A3 and A4 of the lower hydraulic motor, and the XB port is respectively connected with B3 and B4 of the lower hydraulic motor to form a parallel oil path of the double lower hydraulic motors; the oil drain port L is connected with an oil return tank after being converged;
the middle position function of the reversing valve is an M-shaped plate type two-position four-way manual reversing valve which is arranged on a hydraulic oil way valve block, oil ports are correspondingly connected, and when the middle position function is an M-shaped reversing valve at an initial position, the oil ports P of the reversing valve are communicated with T, and A and B are respectively sealed. The initial position is the high rotational speed of rotation mechanism, low torque output operating mode, and fluid passes through load oil circuit A gets into hydraulic circuit valve piece A mouth, directly gets into the A1 of the hydraulic motor of two upper portions, A2 mouth through the SA mouth, and the motor is parallelly connected rotatory, and output torque, then fluid by the B1 of the hydraulic motor of two upper portions, B2 mouth pass through hydraulic circuit valve piece SB mouth gets into the switching-over valve, through P, T mouth and hydraulic circuit piece XA mouth, inflow two lower hydraulic motor's A3, A4, the hydraulic motor of two lower portions with the series follow-up of two upper portions, finally fluid returns oil tank 1 by the B3 of the hydraulic motor of two lower portions, B4 mouth through load oil circuit B8, the T mouth of load sensitive valve 5. The reversing valve core is reversed to the right position, the reversing mechanism is under the working condition of low rotating speed and high torque output at the moment, oil enters the port A of the hydraulic oil way valve block through the load oil way A, one path of oil directly enters the ports A1 and A2 of the hydraulic motors at the double upper parts through the oil port SA, the other path of oil directly enters the ports A3 and A4 of the hydraulic motors at the double lower parts through the load port A, T of the reversing valve and the port XA of the hydraulic oil way block, the four motors are rotated in parallel to output torque, and the oil return oil of the hydraulic motors at the upper parts enters the reversing valve P, B port through the oil valves of the hydraulic oil way block and the oil return oil B3 and B4 of the hydraulic motors at the double lower parts are converged, and finally the oil returns to the oil tank through the load oil way B and the load sensitive valve.
The reversing valve is of a manual structure.
The hydraulic motors are 4 in number and are respectively arranged at four corners of the slewing mechanism to jointly form a slewing device of the drilling machine, the whole structure is compact, and the slewing mechanism is driven to output torque through rotation of the hydraulic motors. One end of the double-speed valve group is connected to the load oil circuit A and the load oil circuit B, and the other end of the double-speed valve group is connected to the upper double-hydraulic motor and the lower double-hydraulic motor respectively. And by switching the double-speed valve group, the double-speed rotation of the slewing mechanism is driven, so that the high rotating speed, the low torque output or the low rotating speed and the high torque output of the slewing mechanism are realized.
The variable pump oil suction port is connected to the oil tank, the oil outlet is connected to the load sensitive valve oil inlet, the load port of the load sensitive valve is connected to the load oil path A and the load oil path B respectively, the load sensitive valve feedback port is connected to the variable pump feedback port, and the control oil port of the pilot hydraulic control handle is connected to the control oil port of the load sensitive valve. The opening size of the valve core of the load sensitive valve is proportionally controlled by pushing and pulling the angle change of the valve rod of the pilot hydraulic control handle, so that the speed of the hydraulic motor is controlled, and the revolving speed is ensured to be changed along with the angle proportion of the valve rod of the push-pull handle in the respective working condition of the revolving mechanism under the double-speed working condition.
Referring to fig. 2 and 3, four hydraulic motors are respectively arranged at four corners of the slewing mechanism, and the combined slewing device is compact in structure.
Example 2
The embodiment provides a double-speed hydraulic system of a multi-motor driving slewing mechanism, wherein a reversing valve is a hydraulic control reversing valve, and a control end is communicated with a control handle and is used for switching working positions of the reversing valve.
Example 3
The embodiment provides a double-speed hydraulic system of a multi-motor driving slewing mechanism, wherein a reversing valve is an electromagnetic reversing valve, and a controller is used for controlling the electrifying and the de-electrifying of the reversing valve, so that the switching of the working positions of the reversing valve is realized.
While the utility model has been described above by way of illustration in the drawings, it will be understood by those skilled in the art that the present disclosure is not limited to the embodiments described above, and various changes, modifications and substitutions may be made without departing from the scope of the utility model.
Claims (4)
1. A two-speed hydraulic system for a multi-motor driven swing mechanism, characterized by: the double-speed hydraulic system of the multi-motor driving slewing mechanism comprises an oil tank (1), a motor (2), a variable pump (3), a pressure gauge (4), a load sensitive valve (5), a pilot hydraulic control handle (6), a load oil circuit A (7), a load oil circuit B (8), a hydraulic motor (9) and a double-speed valve group (10);
wherein: one end of the double-speed valve group (10) is connected to the load oil circuit A (7) and the load oil circuit B (8), and the other end is connected to the upper and lower hydraulic motors (9) respectively; the motor (2) is connected with the variable pump (3), an oil suction port of the variable pump (3) is connected to the oil tank (1), the pressure gauge (4) is arranged on an oil outlet pipeline of the variable pump (3), an oil outlet of the variable pump (3) is connected to an oil inlet of the load sensitive valve (5), a load port of the load sensitive valve (5) is connected to the load oil circuit A (7) and the load oil circuit B (8), a feedback port of the load sensitive valve (5) is connected to a feedback port of the variable pump (3), and a control oil port of the pilot hydraulic control handle (6) is connected to a control oil port of the load sensitive valve (5).
2. The two-speed hydraulic system of a multi-motor driven swing mechanism according to claim 1, wherein: the double-speed valve group (10) comprises a reversing valve and a hydraulic oil way valve block; the middle position of the reversing valve can be an M-shaped two-position four-way reversing valve, the reversing valve is arranged on the hydraulic oil way valve block, and an oil port of the reversing valve is communicated with a corresponding oil passage on the hydraulic oil way valve block.
3. The two-speed hydraulic system of a multi-motor driven swing mechanism according to claim 1, wherein: the number of the hydraulic motors (9) is 4.
4. The two-speed hydraulic system of a multi-motor driven swing mechanism according to claim 2, wherein: the reversing valve is of a manual, hydraulic or electric control structure.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222192437 | 2022-08-19 | ||
| CN2022221924372 | 2022-08-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219953786U true CN219953786U (en) | 2023-11-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223057649.6U Active CN219953786U (en) | 2022-08-19 | 2022-11-17 | Double-speed hydraulic system of multi-motor driving rotary mechanism |
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| Country | Link |
|---|---|
| CN (1) | CN219953786U (en) |
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2022
- 2022-11-17 CN CN202223057649.6U patent/CN219953786U/en active Active
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