CN211116849U - Hydraulic pressing and obstacle avoidance control system of snow removing car belly shovel - Google Patents
Hydraulic pressing and obstacle avoidance control system of snow removing car belly shovel Download PDFInfo
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- CN211116849U CN211116849U CN201921790054.7U CN201921790054U CN211116849U CN 211116849 U CN211116849 U CN 211116849U CN 201921790054 U CN201921790054 U CN 201921790054U CN 211116849 U CN211116849 U CN 211116849U
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Abstract
The utility model belongs to the technical field of hydraulic control, especially, relate to a hydraulic pressure of snow removing car belly shovel pushes down and keeps away barrier control system, a serial communication port includes the motor, the hydraulic control device who is connected with this motor, this hydraulic control device includes cartridge valves, the energy storage ware that is connected with this cartridge valves, the lift cylinder who is connected with cartridge valves and energy storage ware respectively, cartridge valves includes the decompression overflow valve, the check valve who establishes ties with this decompression overflow valve, with the differential overflow valve that decompression overflow valve and check valve are parallelly connected, there is the starting valve that the rod chamber is connected with lift cylinder's hydro-cylinder, with this starting valve parallel and parallel connection control the plunger rod of differential overflow valve overflow. The utility model is simple in operation, it is controllable to ground pressure when abdomen shovel pushes down, pushes down and can not continue the increase after reaching regulated pressure, can not appear abdomen shovel too big and lead to damaging ground with ground relative pressure.
Description
Technical Field
The utility model belongs to the technical field of hydraulic control, especially, relate to a hydraulic pressure of snow removing car abdomen shovel pushes down and keeps away barrier control system.
Background
The belly shovel is a snow removing shovel which is installed between a front axle and a rear axle of a heavy truck (a truck or a dump truck), and when the snow removing shovel is pressed down, the truck moves forwards to compact the ground, so that ice and snow are pushed to the roadside through a certain angle. In the prior art, the pressure on the ground and the obstacle avoidance of the belly shovel of the snow removing vehicle during snow removing work are generally realized through a mechanical structure, and the mechanical obstacle avoidance stroke is limited, the stress variation range is large, the operation is not visual, the controllability on the ground pressure is poor, the snow removing effect is not ideal, and the road surface can be damaged due to too much pressing.
Disclosure of Invention
The utility model aims at providing a hydraulic pressure of snow removing car belly shovel pushes down and keeps away barrier control system, can demonstrate directly perceivedly when the snow removing to ground pressure and easy operation, can regulate and control and solve to ground pressure and push down excessively to lead to the road surface damage.
The purpose of the utility model is realized by the following technical scheme:
the hydraulic pressing and obstacle avoidance control system of the snow removing belly shovel of the utility model is characterized by comprising an electric motor, a hydraulic control device connected with the electric motor, a lifting oil cylinder, a hydraulic control device and a lifting oil cylinder, wherein the hydraulic control device comprises a plug-in valve set, an energy accumulator connected with the plug-in valve set, and the lifting oil cylinder is respectively connected with the plug-in valve set and the energy accumulator,
the cartridge valve group comprises a pressure reducing overflow valve, a check valve connected with the pressure reducing overflow valve in series, a differential overflow valve connected with the pressure reducing overflow valve and the check valve in parallel, a starting valve connected with a rod cavity of an oil cylinder of the lifting oil cylinder, and a plunger connected with the starting valve in parallel and controlling the overflow of the differential overflow valve.
The energy accumulator is connected with the rodless cavity of the oil cylinder of the lifting oil cylinder in parallel.
The differential overflow valve is connected with the rodless cavity of the oil cylinder of the lifting oil cylinder in parallel.
The utility model has the advantages that:
(1) the utility model discloses a snow removing car abdomen shovel's hydraulic pressure pushes down and keeps away barrier control system, easy operation, and it is controllable to ground pressure when abdomen shovel pushes down, pushes down can not continue the increase after reaching regulating pressure, can not appear abdomen shovel too big and lead to damaging ground with ground relative pressure.
(2) The utility model discloses a snow removing car belly shovel's hydraulic pressure pushes down and keeps away barrier control system, and the during operation is safe controllable with ground pressure change, and the energy storage ware can respond to pressure change rapidly and do not hinder the road surface, and when operating pressure exceeded controllable pressure, hydraulic oil initiative off-load did not harm system and belly shovel structure.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The following further describes the embodiments of the present invention with reference to the drawings.
As shown in figure 1, the hydraulic pressing and obstacle avoidance control system of the snow removing belly shovel of the utility model is characterized by comprising an electric motor, a hydraulic control device connected with the electric motor, a hydraulic energy accumulator 1 connected with the hydraulic control device, a lifting oil cylinder 2 respectively connected with the hydraulic energy accumulator 1 and the hydraulic valve group,
the cartridge valve group comprises a pressure reducing overflow valve 3, a check valve 5 connected with the pressure reducing overflow valve 3 in series, a differential overflow valve 4 connected with the pressure reducing overflow valve 3 and the check valve 5 in parallel, a starting valve 6 connected with a rod cavity of the oil cylinder of the lifting oil cylinder 2, and a plunger 7 connected with the starting valve 6 in parallel and controlling the overflow of the differential overflow valve 4. The plunger 7 is connected with the starting valve 6 in parallel and controls the overflow of the differential overflow valve 4 at the same time, so that the abdomen shovel realizes the lifting action.
The energy accumulator 1 is connected with the rodless cavity of the oil cylinder of the lifting oil cylinder 2 in parallel.
The differential overflow valve 4 is connected in parallel with the rodless cavity of the oil cylinder of the lifting oil cylinder 2.
The utility model discloses a snow removing car belly shovel's hydraulic pressure pushes down and keeps away barrier control system working process as follows:
before snow removal, the abdomen shovel is operated to a working state (the abdomen shovel is pressed down after swinging for a certain angle), when the abdomen shovel is pressed down, the starting valve 6 is electrified, meanwhile, pressure oil enters the system from a port A group, the hydraulic oil enters a rodless cavity of the abdominal shovel oil cylinder 2 and the energy accumulator 1 through a pressure reducing overflow valve 3 at a set pressure P1 through a one-way valve 5, at the moment, due to the dead weight of the abdominal shovel, the hydraulic oil can preferentially enter the rodless cavity of the oil cylinder 2, when the belly shovel contacts and is supported by the ground, hydraulic oil can fill the energy accumulator 1, the pressure of the belly shovel on the ground can be gradually increased until the pressure reaches the pressure P1 set by the pressure reduction overflow valve 3, the pressure is not increased, redundant hydraulic oil can overflow through the pressure reduction overflow valve 3 and return to a system oil return pipeline, the position of the belly shovel reaches a working state at the moment, (the belly shovel does not need to be pressed down any more, a power source motor stops working, and the valve head of the starting valve 6 is kept electrified);
when the snow remover is started to drive the belly shovel to shovel snow, the ground can have uneven or suddenly raised obstacles and the like. When the ground surface is raised and the shovel edge of the belly shovel is increased by the ground reverse force to extrude the oil cylinder 2, a piston rod of the oil cylinder retracts, the stroke is reduced, part of oil without a rod cavity enters the energy accumulator 1, the energy is stored, the system pressure is temporarily raised, but the maximum pressure cannot exceed the highest design pressure P2 of the system; when the snow shovel crosses the uplifting position, the ground height is lowered, the energy accumulator 1 releases the energy stored by the energy accumulator, oil is supplemented to the rodless cavity of the oil cylinder 2, the piston rod extends out, the stroke is reset, the working pressure is restored to P1 at the moment, and the snow shovel continues to work; the same applies when the ground is low.
When snow removal is completed and the belly shovel is in a lifting and rotating state, pressure oil enters the system starting valve 6 from the port B group to be electrified, the hydraulic oil enters the rod cavity of the oil cylinder 2, meanwhile, pressure is applied to the plunger 7, the plunger 7 jacks the differential overflow valve 4, and the hydraulic oil in the rod-free cavity of the oil cylinder 2 returns to the port A through the differential overflow valve 4 to return oil.
Therefore, the snow removing device is simple to operate when snow is removed, the working pressure is controllable when obstacles are avoided, and the road surface is not damaged.
Claims (3)
1. A hydraulic pressing and obstacle avoidance control system of a snow removing car belly shovel is characterized by comprising a motor, a hydraulic control device connected with the motor, a lifting oil cylinder, a hydraulic control device and a control system, wherein the hydraulic control device comprises a plug-in valve group, an energy accumulator connected with the plug-in valve group, the lifting oil cylinder is respectively connected with the plug-in valve group and the energy accumulator,
the cartridge valve group comprises a pressure reducing overflow valve, a check valve connected with the pressure reducing overflow valve in series, a differential overflow valve connected with the pressure reducing overflow valve and the check valve in parallel, a starting valve connected with a rod cavity of an oil cylinder of the lifting oil cylinder, and a plunger connected with the starting valve in parallel and controlling the overflow of the differential overflow valve.
2. The hydraulic hold-down and obstacle avoidance control system for a snow removing belly shovel according to claim 1, wherein said accumulator is connected in parallel with the rodless cavity of said lift cylinder.
3. The hydraulic depression and obstacle avoidance control system for a snow removing belly shovel according to claim 1, characterized in that said differential relief valve is connected in parallel with the rodless cavity of said lift cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921790054.7U CN211116849U (en) | 2019-10-24 | 2019-10-24 | Hydraulic pressing and obstacle avoidance control system of snow removing car belly shovel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921790054.7U CN211116849U (en) | 2019-10-24 | 2019-10-24 | Hydraulic pressing and obstacle avoidance control system of snow removing car belly shovel |
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| Publication Number | Publication Date |
|---|---|
| CN211116849U true CN211116849U (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921790054.7U Active CN211116849U (en) | 2019-10-24 | 2019-10-24 | Hydraulic pressing and obstacle avoidance control system of snow removing car belly shovel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671371A (en) * | 2019-10-24 | 2020-01-10 | 鞍山森远路桥股份有限公司 | Hydraulic pressing and obstacle avoidance control system of snow removing car belly shovel |
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2019
- 2019-10-24 CN CN201921790054.7U patent/CN211116849U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110671371A (en) * | 2019-10-24 | 2020-01-10 | 鞍山森远路桥股份有限公司 | Hydraulic pressing and obstacle avoidance control system of snow removing car belly shovel |
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