CN219388279U - Novel single pump tandem drive hydraulic circuit - Google Patents
Novel single pump tandem drive hydraulic circuit Download PDFInfo
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- CN219388279U CN219388279U CN202223478726.5U CN202223478726U CN219388279U CN 219388279 U CN219388279 U CN 219388279U CN 202223478726 U CN202223478726 U CN 202223478726U CN 219388279 U CN219388279 U CN 219388279U
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Abstract
The utility model discloses a novel single-pump serial driving hydraulic circuit, which comprises: the hydraulic device comprises an inclined shaft type plunger pump, an anti-falling winch hydraulic device and a main drum hydraulic device, wherein an oil inlet of the inclined shaft type plunger pump is connected with an oil tank, and an oil outlet of the inclined shaft type plunger pump is simultaneously connected with a first three-position four-way electromagnetic valve and a second three-position four-way electromagnetic valve; the first three-position four-way electromagnetic valve is connected with the anti-falling winch hydraulic device; the second three-position four-way electromagnetic valve is connected with the main winding drum hydraulic device; wherein, the first three-position four-way electromagnetic valve is provided with a first electromagnetic reversing device and a second electromagnetic reversing device; a third electromagnetic reversing device and a fourth electromagnetic reversing device are arranged on the second three-position four-way electromagnetic valve; the electromagnetic ball valve added in the hydraulic motor control loop of the anti-falling winch can meet the requirement of synchronous rope releasing under various working conditions, and the utility model does not need on-site adjustment of operators, thereby greatly improving the working efficiency.
Description
Technical Field
The utility model relates to the technical field of gearbox lubrication hydraulic systems, in particular to a novel single-pump serial driving hydraulic circuit.
Background
For safety purposes, the loading mechanism of the garbage transfer truck can be disassembled by a certain steel wire traction type carriage, and two groups of steel wire ropes of the main drum hydraulic winch and the anti-falling hydraulic winch are arranged to draw and release a carriage container. The steel wire rope driven by the main winding drum winch is used for bearing main load, and the steel wire rope of the anti-falling winch is used for preventing the main winding drum winch from being broken accidentally, and the carriage container is continuously pulled to ensure that the carriage container cannot fall to cause personnel or equipment damage.
The existing vehicle is provided with a set of duplex pump set driven by the vehicle engine and a corresponding hydraulic system for controlling the two winches, so that independent rope unreeling and rope reeling actions of the main reel winch and the anti-falling winch can be realized; the steel wire ropes of the two winches can be hung on a carriage container at the same time, so that the purposes of synchronous rope unreeling and synchronous rope reeling are achieved.
In the prior art, a duplex pump in the form of a gear pump is driven by a through-shaft plunger pump, and power oil is respectively provided for winches driven by two groups of hydraulic motors; because the volume and weight of the tandem pump exceeds the upper limit of the power take-off of the vehicle gearbox, additional universal drive shafts and pump stack support mechanisms are required for installation, i.e., increased cost also results in difficult installation.
When the anti-falling motor in the hydraulic circuit in the prior art is in synchronous rope releasing working condition, a manually-adjusted one-way speed regulating valve is adopted to control the speed for matching with the main reel hydraulic motor; the synchronous rope releasing aim can be achieved only under a specific condition, and once the working condition is changed, manual adjustment is not needed synchronously, so that the working efficiency is low.
Disclosure of Invention
In view of the above, the present utility model aims to provide a novel single-pump tandem drive hydraulic circuit.
In order to achieve the above purpose, the technical scheme adopted by the utility model is as follows:
a novel single pump tandem drive hydraulic circuit, comprising:
the oil outlet of the inclined shaft type plunger pump is simultaneously connected with a first three-position four-way electromagnetic valve and a second three-position four-way electromagnetic valve;
the first three-position four-way electromagnetic valve is connected with the anti-falling winch hydraulic device;
the second three-position four-way electromagnetic valve is connected with the main winding drum hydraulic device;
the first three-position four-way electromagnetic valve is provided with a first electromagnetic reversing device and a second electromagnetic reversing device, and the first electromagnetic reversing device or the second electromagnetic reversing device is electrically used for changing the position inside the first three-position four-way electromagnetic valve; a third electromagnetic reversing device and a fourth electromagnetic reversing device are arranged on the second three-position four-way electromagnetic valve, and the third electromagnetic reversing device and the fourth electromagnetic reversing device are electrically used for changing the position inside the second three-position four-way electromagnetic valve;
the anti-falling winch hydraulic device comprises: the electromagnetic ball valve is connected with the first motor and the first three-position four-way electromagnetic valve in parallel, and a fifth electromagnetic reversing device is arranged on the electromagnetic ball valve;
the main spool hydraulic device includes: the second motor is connected with the second three-position four-way electromagnetic valve;
the first electromagnetic reversing device, the second electromagnetic reversing device, the third electromagnetic reversing device, the fourth electromagnetic reversing device or the fifth electromagnetic reversing device is powered on or powered off to control the first motor or the second motor to rotate positively or reversely.
The novel single pump tandem drive hydraulic circuit, wherein, prevent weighing down winch hydraulic means still includes: and the anti-falling loop overflow valve is connected with the electromagnetic ball valve and the first motor in parallel.
The novel single-pump serial driving hydraulic circuit is characterized in that an oil return port of the first three-position four-way electromagnetic valve and an oil return port of the second three-position four-way electromagnetic valve are connected with the oil tank.
The novel single-pump serial driving hydraulic circuit is characterized in that a main winding drum overflow valve is arranged between the inclined shaft type plunger pump and the first three-position four-way electromagnetic valve.
The novel single pump tandem drive hydraulic circuit, wherein, prevent weighing down winch hydraulic means still includes: the speed regulating valve is connected with the electromagnetic ball valve in series, and the whole body of the speed regulating valve and the electromagnetic ball valve after being connected is connected with the first motor in parallel.
The novel single-pump serial driving hydraulic circuit, wherein the first motor rotates positively to drive the anti-falling winch hydraulic device to retract ropes, and the first motor rotates reversely to drive the anti-falling winch hydraulic device to place ropes; the second motor rotates forward to drive the main drum hydraulic device to retract ropes, and rotates reversely to drive the main drum hydraulic device to place ropes.
The novel single-pump serial driving hydraulic circuit, wherein the first electromagnetic reversing device is powered, and the anti-falling winch hydraulic device is independently used for rope collection; the second electromagnetic reversing device is powered, and the anti-falling winch hydraulic device independently unreels ropes; the third electromagnetic reversing device is powered, and the main drum hydraulic device independently receives ropes; and the fourth electromagnetic reversing device is electrified, and the main winding drum hydraulic device independently unreels ropes.
The novel single-pump serial driving hydraulic circuit, wherein the first electromagnetic reversing device and the third electromagnetic reversing device are powered simultaneously, and the main winding drum hydraulic device synchronously receive ropes; the fourth electromagnetic reversing device and the fifth electromagnetic reversing device are powered on simultaneously, and the main winding drum hydraulic device synchronously unwind ropes.
The utility model adopts the technology, so that compared with the prior art, the utility model has the positive effects that:
(1) After the utility model is changed into a single-pump series oil supply loop, the purchase of expensive duplex pumps can be avoided, and the utility model has obvious economic benefit; after changing into a single pump series oil supply loop, the auxiliary transmission shaft, namely the mounting bracket, can be removed, so that the space occupation is reduced, and the vehicle adaptability is greatly improved.
(2) The electromagnetic ball valve added in the hydraulic motor control loop of the anti-falling winch can meet the requirement of synchronous rope releasing under various working conditions, and the utility model does not need on-site adjustment of operators, thereby greatly improving the working efficiency.
(3) The utility model adopts the single pump to supply oil and the multi-way valve, thereby reducing corresponding hydraulic pipelines, reducing assembly work and improving reliability.
Drawings
Fig. 1 is a schematic diagram of the prior art of the present utility model.
Fig. 2 is a schematic illustration of a prior art hydraulic circuit of the present utility model.
Fig. 3 is an electronically controlled schematic of the prior art of the present utility model.
Fig. 4 is a schematic diagram of a prior art physical connection of the present utility model.
Fig. 5 is a schematic diagram of a novel single pump tandem drive hydraulic circuit of the present utility model.
Fig. 6 is a schematic illustration of the physical connection of the novel single pump tandem drive hydraulic circuit of the present utility model.
Fig. 7 is an electronically controlled schematic of the novel single pump tandem drive hydraulic circuit of the present utility model.
Fig. 8 is a schematic illustration of the physical connection of the novel single pump tandem drive hydraulic circuit of the present utility model.
Fig. 9 is a schematic diagram of a first three-position four-way solenoid valve of the novel single pump tandem drive hydraulic circuit of the present utility model.
Fig. 10 is a schematic diagram of a first three-position four-way solenoid valve and a second three-position four-way solenoid valve of the novel single pump tandem drive hydraulic circuit of the present utility model.
In the accompanying drawings: 1. a main spool winch motor; 11. a main reel winch wire rope set; 2. anti-falling winch hydraulic motor; 21. an anti-falling winch steel wire rope set; 3. a duplex pump; 31. a pump set support mechanism; 32. a universal drive shaft; 33. a power take-off port of a vehicle gearbox; 4. a manual one-way speed regulating valve; 5. inclined shaft type plunger pump; 6. an anti-falling loop overflow valve; 7. a first three-position four-way solenoid valve; 8. a speed regulating valve; 9. an anti-falling winch hydraulic device; 10. a main spool winch hydraulic device; 11. a second three-position four-way electromagnetic valve; 12. a main spool overflow valve; 13. an electromagnetic ball valve; 71. a first electromagnetic reversing device; 72. a second electromagnetic reversing device; 111. a third electromagnetic reversing device; 112. and a fourth electromagnetic reversing device.
Detailed Description
The utility model is further described below with reference to the drawings and specific examples, which are not intended to be limiting.
FIG. 1 is a schematic illustration of the prior art of the present utility model; FIG. 2 is a schematic illustration of a prior art hydraulic circuit of the present utility model; FIG. 3 is an electronically controlled schematic of the prior art of the present utility model; fig. 4 is a schematic illustration of a prior art physical connection of the present utility model, with reference to fig. 1-4, showing a prior art main spool hydraulic winch and fall arrest hydraulic winch, comprising: the duplex pump 3, the hydraulic system for controlling the two winches, the main drum winch wire rope group 11 and the anti-falling winch wire rope group 21 can realize independent rope unreeling and rope reeling actions of the main drum winch and the anti-falling winch; the steel wire ropes of the two winches can be hung on a carriage container at the same time, so that the purposes of synchronous rope unreeling and synchronous rope reeling are achieved. The duplex pump 3 provides power oil for winches driven by two groups of hydraulic motors respectively;
YV1, YV2, YV3, YV4, and YV5 in fig. 2 correspond to YV1, YV2, YV3, YV4, and YV5, respectively, in the table of fig. 3, with+ representing power; namely, the YV1 power-on anti-falling winch hydraulic motor 2 is independently used for rope collection; the YV2 power-on anti-falling winch hydraulic motor 2 is independently used for rope releasing; the YV3 power-obtaining main winding drum winch motor 1 is used for independently winding ropes; the YV4 power-obtaining main winding drum winch motor 1 is used for independently paying off ropes; YV1 and YV3 simultaneously obtain electricity to synchronously retract ropes by a main reel winch motor 1 and an anti-falling winch hydraulic motor 2; YV1 and YV3 simultaneously obtain electricity and synchronously unwind ropes by a main winding drum winch motor 1 and an anti-falling winch hydraulic motor 2.
As shown in fig. 2, the prior art further includes:
and the falling-preventing loop overflow valve 6 is used for limiting the working pressure of the falling-preventing hydraulic loop.
The two three-position four-way electromagnetic valve is used for controlling the start and stop of the rotation action of the anti-falling winch hydraulic motor 2 and the rotation direction of the anti-falling winch hydraulic motor, and controlling the start and stop of the rotation action of the main drum winch hydraulic motor and the rotation direction of the main drum winch hydraulic motor.
A manual one-way speed control valve 84 for controlling the rope payout speed of the anti-fall winch hydraulic motor 2.
An anti-falling winch hydraulic motor 2 and a main drum winch hydraulic motor.
Main spool loop relief valve: for defining the operating pressure of the main spool hydraulic circuit.
The through-shaft plunger pump of the duplex pump 3, which is close to the PTO, is used for supplying oil to the main winding drum and the gear pump connected in series at the rear part is used for supplying oil to the anti-falling winch hydraulic motor 2.
However, because the volume and weight of the tandem pump 3 exceeds the upper limit of the vehicle transmission power take-off port 33, additional universal drive shafts 32 and pump stack support mechanisms 31 are required for installation, i.e., increased cost, also results in difficult installation.
In the prior art, when the anti-falling motor in the hydraulic circuit is in synchronous rope releasing working condition, a manual one-way speed regulating valve 84 is required to control the speed for matching with the main drum hydraulic motor; the synchronous rope releasing aim can be achieved only under a specific condition, and once the working condition is changed, manual adjustment is not needed synchronously, so that the working efficiency is low.
As shown in fig. 4, the duplex pump 3 in the prior art cannot be directly installed due to the limitation of the installation space and bearing capacity of the power take-off port 33 of the vehicle gearbox, and a set of universal transmission shaft 32 and an oil pump installation bracket are required to be additionally arranged; the structure is complicated, the installation and the use on the vehicle are not facilitated, and the cost is high.
As shown in fig. 3, when the two motors are designed to synchronously unwind, only the two electromagnets for controlling the hydraulic motors to separately unwind are powered on simultaneously, and the unwinding speed of the anti-falling winch needs to be matched with the main winding drum by adjusting the manual speed regulating valve 8 to achieve synchronization. When the operating conditions change, such as: the speed of the engine, or the load weight, changes, and the speed valve 8 needs to be manually adjusted again to be matched again, thus resulting in low vehicle operation efficiency.
The hydraulic part selected in the prior art is of a plate-type mounting structure, and is limited by the structure to belong to different hydraulic integrated valve groups, so that the hydraulic part has larger mounting size and is connected with a plurality of hydraulic pipelines, and time and labor are wasted in construction.
FIG. 5 is a schematic diagram of a novel single pump tandem drive hydraulic circuit of the present utility model; FIG. 6 is a schematic illustration of the physical connection of the novel single pump tandem drive hydraulic circuit of the present utility model; FIG. 7 is an electronically controlled schematic of the novel single pump tandem drive hydraulic circuit of the present utility model; FIG. 8 is a schematic illustration of the physical connection of the novel single pump tandem drive hydraulic circuit of the present utility model; FIG. 9 is a schematic illustration of a first three-position four-way solenoid valve of the novel single pump tandem drive hydraulic circuit of the present utility model; fig. 10 is a schematic diagram of a first three-position four-way solenoid valve and a second three-position four-way solenoid valve of the novel single-pump tandem drive hydraulic circuit of the present utility model, referring to fig. 1 to 10, showing a novel single-pump tandem drive hydraulic circuit of a preferred embodiment, comprising: the hydraulic device comprises an inclined shaft type plunger pump 5, an anti-falling winch hydraulic device 9 and a main drum hydraulic device, wherein an oil inlet of the inclined shaft type plunger pump 5 is connected with an oil tank, and an oil outlet of the inclined shaft type plunger pump 5 is simultaneously connected with a first three-position four-way electromagnetic valve 7 and a second three-position four-way electromagnetic valve 11; the first three-position four-way electromagnetic valve 7 is connected with the anti-falling winch hydraulic device 9; the second three-position four-way electromagnetic valve 11 is connected with a main drum hydraulic device; wherein, the first three-position four-way electromagnetic valve 7 is provided with a first electromagnetic reversing device 71 and a second electromagnetic reversing device 72, and the first electromagnetic reversing device 71 or the second electromagnetic reversing device 72 is electrified to change the machine position inside the first three-position four-way electromagnetic valve 7; a third electromagnetic reversing device 111 and a fourth electromagnetic reversing device 112 are arranged on the second three-position four-way electromagnetic valve 11, and the third electromagnetic reversing device 111 and the fourth electromagnetic reversing device 112 are electrically used for changing the machine position inside the second three-position four-way electromagnetic valve 11; the fall preventing winch hydraulic device 9 includes: the electromagnetic ball valve 13 is connected with the first motor in parallel, the electromagnetic ball valve 13 is connected with the first motor and the first three-position four-way electromagnetic valve 7 in parallel, and a fifth electromagnetic reversing device is arranged on the electromagnetic ball valve 13; the main spool hydraulic device includes: the second motor is connected with a second three-position four-way electromagnetic valve 11; the first electromagnetic reversing device 71, the second electromagnetic reversing device 72, the third electromagnetic reversing device 111, the fourth electromagnetic reversing device 112 or the fifth electromagnetic reversing device is powered on or powered off to control the first motor or the second motor to rotate positively or reversely.
In a preferred embodiment, the fall arrest winch hydraulic arrangement 9 further comprises: the fall protection circuit relief valve 6, the fall protection circuit relief valve 6 and the electromagnetic ball valve 13 are connected in parallel.
In a preferred embodiment, the return port of the first three-position four-way solenoid valve 7 and the return port of the second three-position four-way solenoid valve 11 are both connected to the tank.
In a preferred embodiment, a main spool relief valve 12 is provided between the tilt-axis plunger pump 5 and the first three-position four-way solenoid valve 7.
The foregoing is merely a preferred embodiment of the present utility model, and is not intended to limit the embodiments and the protection scope of the present utility model.
The present utility model has the following embodiments based on the above description:
in a further embodiment of the utility model, the anti-fall winch hydraulic device 9 further comprises: the speed regulating valve 8, the speed regulating valve 8 and the electromagnetic ball valve 13 are connected in series, and the whole body of the speed regulating valve 8 and the electromagnetic ball valve 13 after being connected is connected with the first motor in parallel.
In a further embodiment of the utility model, the first motor rotates positively to drive the anti-falling winch hydraulic device 9 to retract the rope, and the first motor rotates reversely to drive the anti-falling winch hydraulic device 9 to unwind the rope; the second motor rotates forward to drive the main drum hydraulic device to retract the ropes, and the second motor rotates reversely to drive the main drum hydraulic device to place the ropes.
In a further embodiment of the utility model, the first electromagnetic reversing device 71 is powered, and the anti-falling winch hydraulic device 9 is independently used for rope collection; the second electromagnetic reversing device 72 is powered, and the anti-falling winch hydraulic device 9 independently unreels ropes; the third electromagnetic reversing device 111 is powered, and the main drum hydraulic device independently receives ropes; the fourth electromagnetic directional 112 is powered and the main spool hydraulic is independently unreeled.
In a further embodiment of the utility model, the first electromagnetic reversing device 71 and the third electromagnetic reversing device 111 are powered simultaneously, and the main spool hydraulic device synchronously receive ropes; the fourth electromagnetic reversing device 112 and the fifth electromagnetic reversing device are powered simultaneously, and the main drum hydraulic device synchronously unwind ropes.
In a preferred embodiment, as shown in fig. 8, the present apparatus reduces the size and weight of the hydraulic pump to allow it to be mounted directly to the vehicle transmission power take-off 33 without the need for additional auxiliary transmission while maintaining the existing functionality. When the rope is synchronously released, the novel technology can ensure that the two groups of hydraulic winches are always synchronous and do not disorder ropes.
In a preferred embodiment, the device employs a compact spool pump 5 which is adapted to be directly mounted to the vehicle transmission power take-off 33.
In a preferred embodiment, the oil supply circuit of two groups of hydraulic motors is changed from the simultaneous oil supply of the prior art duplex pump 3 to the serial oil supply of a single pump, and an electrically controlled multi-way valve with a more compact structure is adopted to replace the prior art plate type electromagnetic valve.
In a preferred embodiment, the device adds an electromagnetic ball valve 13 in the control loop of the anti-falling winch hydraulic device 9 and changes the control object of the speed regulating valve 8; the rope releasing action of the anti-falling winch hydraulic device 9 under the same rope releasing working condition is changed from the active oil inlet speed regulation in the prior art into the passive rope releasing according to the rope releasing of the main winding drum; the speed regulating valve 8 in the loop is only used for limiting the highest lowering speed and preventing personnel or equipment damage caused by accelerated falling of the load after the main reel steel wire rope is accidentally broken.
In a preferred embodiment, the device can avoid purchasing expensive duplex pumps 3 after being changed into a single-pump serial oil supply loop, and has obvious economic benefit.
In a preferred embodiment, after the device is changed into a single-pump series oil supply loop, the auxiliary transmission shaft, namely the mounting bracket, can be removed, so that the space occupation is reduced, and the vehicle adaptability is greatly improved.
In a preferred embodiment, the electromagnetic ball valve 13 added in the control loop of the anti-falling winch hydraulic device 9 can meet the synchronous rope releasing requirement under various working conditions, and the operation efficiency is greatly improved without on-site adjustment of operators.
In a preferred embodiment, the device also reduces corresponding hydraulic pipelines, reduces assembly work and improves reliability after adopting a single pump for oil supply and a multi-way valve.
In a preferred embodiment, the device comprises a tilt-axis plunger pump 5: simultaneously, hydraulic power oil is provided for the loops where the two hydraulic motors are located.
In a preferred embodiment, the fall protection circuit relief valve 6 of the present device is used to define the working pressure of the fall protection winch circuit.
In a preferred embodiment, the first three-position four-way electromagnetic valve 7 of the device is used for controlling the starting and stopping of the rotation action of the anti-falling motor and the rotation direction.
In a preferred embodiment, the speed valve 8 of the present device is used to define the maximum rope payout speed of the anti-crash motor under passive rope payout conditions.
In a preferred embodiment, the second three-position four-way solenoid valve 11 of the device is used for controlling the start and stop of the rotation action of the main drum motor and the rotation direction.
In a preferred embodiment, the main spool relief valve 12 of the present apparatus is used to define the main spool circuit operating pressure.
In a preferred embodiment, the solenoid valve 13 of the device is used to open the freewheel condition of the fall-preventing winch hydraulic means 9.
In a preferred embodiment, the device changes two groups of hydraulic motors into a series oil supply mode, and the action effect which can only be achieved by the separate oil supply of the duplex pump 3 in the prior art can be achieved by using a single pump. Meanwhile, the novel design and the selected inclined shaft type plunger pump 5 are compact in appearance and light in weight, can be directly installed at the power take-off port 33 of the vehicle gearbox, greatly simplify installation, and have outstanding economic benefits compared with the prior art.
In a preferred embodiment, the device is provided with an electromagnetic ball valve 13 at the oil port of the anti-falling winch hydraulic device 9AB on the basis of satisfying the functions of the prior art.
In a preferred embodiment, when the two motors of the device synchronously unwind, the main drum hydraulic motor performs active rope unwinding action as in the prior art, and the anti-falling winch hydraulic device 9 activates the fifth electromagnetic reversing device to enable the first motor to enter a free wheel state; the first motor is free from external oil supply, an AB oil port of the first motor is communicated and shorted by the electromagnetic ball valve 13, and a steel wire rope on the anti-falling winch can follow the passive rope releasing under the action of load gravity; therefore, the problem of rope disorder caused by the asynchronous operation under the working condition of synchronous rope releasing of the two groups of hydraulic motors is thoroughly solved, and the vehicle working efficiency is improved.
In a preferred embodiment, the device is further connected in series with a speed regulating valve 8 for limiting the highest rotating speed of the anti-falling winch hydraulic device 9 and preventing the phenomenon of load acceleration and sliding down after the wire rope of the main winding drum is broken.
In a preferred embodiment, the device adopts an electrically controlled multi-way valve to replace a plate-type mounting valve structure in the prior art, thereby improving the system integration, simplifying the hydraulic pipeline and indirectly improving the reliability.
The foregoing is merely illustrative of the preferred embodiments of the present utility model and is not intended to limit the embodiments and scope of the present utility model, and it should be appreciated by those skilled in the art that equivalent substitutions and obvious variations may be made using the description and illustrations of the present utility model, and that such variations are intended to be included in the protection of the present utility model.
Claims (8)
1. A novel single pump tandem drive hydraulic circuit, comprising:
the oil outlet of the inclined shaft type plunger pump is simultaneously connected with a first three-position four-way electromagnetic valve and a second three-position four-way electromagnetic valve;
the first three-position four-way electromagnetic valve is connected with the anti-falling winch hydraulic device;
the second three-position four-way electromagnetic valve is connected with the main winding drum hydraulic device;
the first three-position four-way electromagnetic valve is provided with a first electromagnetic reversing device and a second electromagnetic reversing device, and the first electromagnetic reversing device or the second electromagnetic reversing device is electrically used for changing the position inside the first three-position four-way electromagnetic valve; a third electromagnetic reversing device and a fourth electromagnetic reversing device are arranged on the second three-position four-way electromagnetic valve, and the third electromagnetic reversing device and the fourth electromagnetic reversing device are electrically used for changing the position inside the second three-position four-way electromagnetic valve;
the anti-falling winch hydraulic device comprises: the electromagnetic ball valve is connected with the first motor and the first three-position four-way electromagnetic valve in parallel, and a fifth electromagnetic reversing device is arranged on the electromagnetic ball valve;
the main spool hydraulic device includes: the second motor is connected with the second three-position four-way electromagnetic valve;
the first electromagnetic reversing device, the second electromagnetic reversing device, the third electromagnetic reversing device, the fourth electromagnetic reversing device or the fifth electromagnetic reversing device is powered on or powered off to control the first motor or the second motor to rotate positively or reversely.
2. The novel single pump tandem drive hydraulic circuit of claim 1, wherein the anti-roll-off winch hydraulic device further comprises: and the anti-falling loop overflow valve is connected with the electromagnetic ball valve and the first motor in parallel.
3. The novel single pump tandem drive hydraulic circuit of claim 1, wherein the return port of the first three-position four-way solenoid valve and the return port of the second three-position four-way solenoid valve are both connected to the tank.
4. The novel single pump tandem drive hydraulic circuit of claim 1, wherein a main spool relief valve is provided between the tilt-shaft plunger pump and the first three-position four-way solenoid valve.
5. The novel single pump tandem drive hydraulic circuit of claim 1, wherein the anti-roll-off winch hydraulic device further comprises: the speed regulating valve is connected with the electromagnetic ball valve in series, and the whole body of the speed regulating valve and the electromagnetic ball valve after being connected is connected with the first motor in parallel.
6. The novel single pump tandem drive hydraulic circuit of claim 1, wherein the first motor rotates forward to drive the anti-fall winch hydraulic device to retract a rope, and the first motor rotates backward to drive the anti-fall winch hydraulic device to place a rope; the second motor rotates forward to drive the main drum hydraulic device to retract ropes, and rotates reversely to drive the main drum hydraulic device to place ropes.
7. The novel single pump tandem drive hydraulic circuit of claim 6, wherein said first electromagnetic reversing device is powered and said anti-fall winch hydraulic device is independently rope retracted; the second electromagnetic reversing device is powered, and the anti-falling winch hydraulic device independently unreels ropes; the third electromagnetic reversing device is powered, and the main drum hydraulic device independently receives ropes; and the fourth electromagnetic reversing device is electrified, and the main winding drum hydraulic device independently unreels ropes.
8. The novel single pump tandem drive hydraulic circuit of claim 7 wherein said first electromagnetic reversing device and said third electromagnetic reversing device are energized simultaneously, said main spool hydraulic device and said main spool hydraulic device being synchronized to retract; the fourth electromagnetic reversing device and the fifth electromagnetic reversing device are powered on simultaneously, and the main winding drum hydraulic device synchronously unwind ropes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223478726.5U CN219388279U (en) | 2022-12-26 | 2022-12-26 | Novel single pump tandem drive hydraulic circuit |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223478726.5U CN219388279U (en) | 2022-12-26 | 2022-12-26 | Novel single pump tandem drive hydraulic circuit |
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| Publication Number | Publication Date |
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| CN219388279U true CN219388279U (en) | 2023-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223478726.5U Active CN219388279U (en) | 2022-12-26 | 2022-12-26 | Novel single pump tandem drive hydraulic circuit |
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| CN (1) | CN219388279U (en) |
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- 2022-12-26 CN CN202223478726.5U patent/CN219388279U/en active Active
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