CN210859420U - Crawler-type aerial working platform hydraulic system - Google Patents
Crawler-type aerial working platform hydraulic system Download PDFInfo
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- CN210859420U CN210859420U CN201921687359.5U CN201921687359U CN210859420U CN 210859420 U CN210859420 U CN 210859420U CN 201921687359 U CN201921687359 U CN 201921687359U CN 210859420 U CN210859420 U CN 210859420U
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- 238000006073 displacement reaction Methods 0.000 claims description 15
- 238000001816 cooling Methods 0.000 claims description 8
- 230000009471 action Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 claims description 4
- 238000013021 overheating Methods 0.000 claims description 3
- 230000001105 regulatory effect Effects 0.000 claims description 3
- 239000002699 waste material Substances 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 2
- 230000007246 mechanism Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Abstract
The utility model discloses a crawler-type aerial working platform hydraulic system, include: the driving loop and the braking loop are connected to the same oil inlet oil way; the oil circuit of the driving circuit is provided with a power unit, a throttling component, a walking proportional flow valve, a walking buffer valve and a driving component, and the throttling component, the walking proportional flow valve, the walking buffer valve and the driving component are all connected with an oil supply pump through uniform oil circuit pipelines. The utility model discloses in, this crawler-type aerial working platform hydraulic system adopts the sensitive system of variable formula load, have the advantage of discharge capacity adjustable, minimum discharge capacity to maximum discharge capacity can be followed to the scope of discharge capacity regulation, and can provide the flow of corresponding needs according to the size of the proportional valve opening of system, unnecessary flow can not produce, do not produce extra power waste, and the system generates heat for a short time, the combination of three pump before having optimized, the problem of all actuating mechanism has been solved to technically realized a pump.
Description
Technical Field
The utility model relates to a hydraulic control system technical field especially relates to a crawler-type aerial working platform hydraulic system.
Background
The crawler aerial work platform is one of aerial work platforms, adopts a crawler walking technology, can accurately move to a mm level, adopts hydraulic drive for the rubber crawler self-propelled aerial work platform, and utilizes a hydraulic telescopic arm to enable the work platform to be lifted to a certain high space, and workers can carry out various operations in the work platform.
However, the conventional crawler-type scissor hydraulic control system is in a mode of controlling the whole vehicle through a closed pump and a group of series gear pumps, the pressure of the hydraulic control system is determined by the load acting on a working medium, when the hydraulic control system only needs a part of flow to work, the rest of flow can flow back to the oil tank through a compensation valve, so that the hydraulic control system generates extremely high power waste, a large amount of heat is generated in the hydraulic control system, and the safety and stability of the operation of the crawler-type aerial work platform hydraulic system are reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a crawler-type aerial work platform hydraulic system.
In order to achieve the above purpose, the utility model adopts the following technical scheme: a crawler-type aerial work platform hydraulic system comprising: the driving loop and the braking loop are connected to the same oil inlet oil way;
a brake component is arranged on an oil way of the brake circuit;
the oil circuit of the driving circuit is provided with a power unit, a throttling component, a walking proportional flow valve, a walking buffer valve and a driving component;
the throttling component, the walking proportional flow valve, the walking buffer valve and the driving component are all connected with the oil supply pump through a uniform oil pipeline, and the oil pipeline is provided with an on-off component.
As a further description of the above technical solution:
the walking proportional flow valve comprises a left walking proportional flow valve and a right walking proportional flow valve;
the left walking proportional flow valve is used for controlling the walking speed of the crawler belt, the left crawler belt can be driven from 0 to the maximum walking speed, and meanwhile, when the proportional flow of the left walking proportional flow valve is large, left-turning walking is realized;
the right walking proportional flow valve is used for controlling the walking speed of the crawler belt, the right crawler belt can be driven from 0 to the maximum walking speed, and meanwhile, when the proportional flow of the right walking proportional flow valve is large, the right walking is achieved through turning to the right.
As a further description of the above technical solution:
the walking proportional flow valve also comprises a speed proportional flow valve;
the speed proportional flow valve is used for controlling the flow rate when the lifting support and the fixed support leg act, namely the driving speed.
As a further description of the above technical solution:
the device also comprises a pilot oil source valve block;
the pilot oil source valve block is used for controlling variable displacement control of the walking motor, and the effect of controlling the large displacement and the small displacement of the walking motor is achieved.
As a further description of the above technical solution:
the walking buffer valve comprises a left crawler walking buffer valve and a right crawler walking buffer valve;
the left crawler traveling buffer valve is used for controlling the buffer braking action when the left crawler travels to start and stop and controlling the forward and reverse rotation speed of the left crawler traveling motor;
the right crawler walking buffer valve is used for controlling the buffer braking action when the right crawler walks to start and stop and controlling the forward and reverse rotation speed of the right crawler walking motor.
As a further description of the above technical solution:
the device also comprises a lifting oil cylinder balance valve;
the lifting oil cylinder balance valve is a locking oil cylinder after the lifting oil cylinder is lifted, and can keep a safe and stable state of a lifting state.
As a further description of the above technical solution:
the throttling component comprises a variable pump and a variable pump pressure regulator;
the variable pump can adjust the swash plate swing angle of the variable pump according to the load of the lifting aerial work platform, so as to adjust the flow output by the variable pump;
one variable pump pressure regulator is used for regulating the pressure difference between the outlet of the variable pump and a load so as to regulate the flow of the flow valve, and the other variable pump pressure regulator is used for ensuring that the maximum output pressure value of the variable pump does not exceed the allowable range of the system.
As a further description of the above technical solution:
the cooling fan is used for cooling the high temperature of the hot oil, thereby preventing the hydraulic system from overheating and causing damage to the hydraulic components.
Advantageous effects
The utility model provides a crawler-type aerial working platform hydraulic system. The method has the following beneficial effects:
(1): the crawler-type aerial work platform hydraulic system adopts a variable load sensitive system, and compared with the hydraulic system with a closed middle position, the crawler-type aerial work platform hydraulic system has the advantage of adjustable displacement, the displacement can be adjusted from the minimum displacement to the maximum displacement, the displacement adjustment and the use requirements in a large range are met, and the crawler-type aerial work platform hydraulic system is extremely high in applicability.
(2): this crawler-type aerial working platform hydraulic system can provide the flow of corresponding needs according to the size of the proportional valve opening of system, compares in the structural design of gear pump, can not have unnecessary flow to produce, does not produce extra power waste to the system generates heat for a short time, has optimized the combination of three pump before, has realized technically that a pump solves all actuating mechanism's problem, has stronger practicality.
Drawings
Fig. 1 is the utility model provides a crawler-type aerial work platform hydraulic system's flow schematic diagram.
Illustration of the drawings:
1. a pilot oil source valve block; 2. a left crawler walking buffer valve; 3. a right crawler travel buffer valve; 4. lifting a balance valve of the oil cylinder; 5. a variable displacement pump; 6. a variable pump pressure regulator; 7. a cooling fan; 8. a power unit; 9. a left travel proportional flow valve; 10. a right travel proportional flow valve; 11. speed proportional flow valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
As shown in fig. 1, a crawler-type aerial work platform hydraulic system includes: the driving loop and the braking loop are connected to the same oil inlet oil way;
a brake component is arranged on an oil way of the brake circuit;
the oil circuit of the driving circuit is provided with a power unit 8, a throttling component, a walking proportional flow valve, a walking buffer valve and a driving component;
the throttling component, the walking proportional flow valve, the walking buffer valve and the driving component are all connected with the oil supply pump through a uniform oil pipeline, and the oil pipeline is provided with an on-off component.
The walking proportional flow valve comprises a left walking proportional flow valve 9 and a right walking proportional flow valve 10; the left walking proportional flow valve 9 is used for controlling the walking speed of the crawler belt, the left crawler belt can be driven from 0 to the maximum walking speed, and meanwhile, when the proportional flow of the left walking proportional flow valve 9 is large, walking in a left turning mode is achieved; the right walking proportional flow valve 10 is used for controlling the walking speed of the crawler belt, the walking speed of the right crawler belt from 0 to the maximum can be achieved, and meanwhile, when the proportional flow of the right walking proportional flow valve 10 is large, the right-turning walking is achieved.
The walking proportional flow valve also comprises a speed proportional flow valve 11; the speed proportional flow valve 11 is used for controlling the flow rate when the lifting support and the fixed support leg act, namely the driving speed.
The device also comprises a pilot oil source valve block 1; the pilot oil source valve block 1 is used for controlling variable displacement control of the walking motor, and the effect of controlling the large displacement and the small displacement of the walking motor is achieved.
The walking buffer valve comprises a left crawler walking buffer valve 2 and a right crawler walking buffer valve 3; the left crawler walking buffer valve 2 is used for controlling the buffer braking action when the left crawler walks to start and stop and controlling the forward and reverse rotation speed of the left crawler walking motor; the right crawler traveling buffer valve 3 is used for controlling the buffer braking action when the right crawler traveling is started and stopped, and controlling the forward and reverse rotation speed of the right crawler traveling motor.
The device also comprises a lifting oil cylinder balance valve 4; the lifting oil cylinder balance valve 4 is a locking oil cylinder after the lifting oil cylinder is lifted, can keep a safe and stable state of a lifting state, can overflow when the load pressure is too high, can also protect the oil cylinder from cylinder explosion caused by too high pressure, and can also keep the lifting oil cylinder in a stable state in a descending process without shaking.
The throttling component comprises a variable pump 5 and a variable pump pressure regulator 6; the variable pump 5 can adjust the swash plate swing angle of the variable pump 5 according to the load of the lifting aerial work platform, so as to adjust the flow output by the variable pump 5; the variable pump pressure regulator 6 is used for regulating the pressure difference between the outlet of the variable pump 5 and the load so as to regulate the flow of a flow valve, and is used for ensuring that the maximum output pressure value of the variable pump 5 does not exceed the allowable range of the system.
Also includes a cooling fan 7; the cooling fan 7 is used to cool the high temperature of the hot oil, thereby preventing the hydraulic system from overheating and causing damage to the hydraulic components.
In the description herein, references to the description of "one embodiment," "an example," "a specific example," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (8)
1. The utility model provides a crawler-type aerial working platform hydraulic system which characterized in that includes: the driving loop and the braking loop are connected to the same oil inlet oil way;
a brake component is arranged on an oil way of the brake circuit;
the oil circuit of the driving circuit is provided with a power unit (8), a throttling component, a walking proportional flow valve, a walking buffer valve and a driving component;
the throttling component, the walking proportional flow valve, the walking buffer valve and the driving component are all connected with the oil supply pump through a uniform oil pipeline, and the oil pipeline is provided with an on-off component.
2. The crawler-type aerial work platform hydraulic system of claim 1, wherein the walking proportional flow valves comprise a left walking proportional flow valve (9) and a right walking proportional flow valve (10);
the left walking proportional flow valve (9) is used for controlling the walking speed of the crawler belt, the left crawler belt can be driven to move from 0 to the maximum walking speed, and meanwhile, when the proportional flow of the left walking proportional flow valve (9) is large, left-turning walking is achieved;
the right walking proportional flow valve (10) is used for controlling the walking speed of the crawler belt, the right crawler belt can be driven to walk from 0 to the maximum walking speed, and meanwhile, when the proportional flow of the right walking proportional flow valve (10) is large, the right walking steering is achieved.
3. The tracked aerial work platform hydraulic system of claim 2, wherein the walking proportional flow valve further comprises a speed proportional flow valve (11);
the speed proportional flow valve (11) is used for controlling the flow rate when the lifting support and the fixed support leg act, namely the driving speed.
4. A tracked aerial work platform hydraulic system according to claim 2, further comprising a pilot oil source valve block (1);
the pilot oil source valve block (1) is used for controlling variable displacement control of the walking motor, and the effect of controlling the large displacement and the small displacement of the walking motor is achieved.
5. A tracked aerial work platform hydraulic system according to claim 1, wherein the walking cushion valve comprises a left crawler walking cushion valve (2) and a right crawler walking cushion valve (3);
the left crawler walking buffer valve (2) is used for controlling the buffer braking action when the left crawler walks to start and stop and controlling the forward and reverse rotation speed of the left crawler walking motor;
the right crawler walking buffer valve (3) is used for controlling the buffer braking action when the right crawler walks to start and stop and controlling the forward and reverse rotation speed of the right crawler walking motor.
6. The hydraulic system of a crawler-type aerial work platform according to claim 1, further comprising a lift cylinder balancing valve (4);
the lifting oil cylinder balance valve (4) is a locking oil cylinder after the lifting oil cylinder is lifted, and can keep a safe and stable state of a lifting state.
7. A tracked aerial work platform hydraulic system according to claim 1, wherein the throttling means comprises a variable pump (5) and a variable pump pressure regulator (6);
the variable pump (5) can adjust the swash plate swing angle of the variable pump (5) according to the load of the lifting aerial work platform, so that the flow output by the variable pump (5) is adjusted;
one variable pump pressure regulator (6) is used for regulating the pressure difference between the outlet of the variable pump (5) and a load so as to regulate the flow of the flow valve, and the other variable pump pressure regulator is used for ensuring that the maximum output pressure value of the variable pump (5) does not exceed the allowable range of the system.
8. A tracked aerial work platform hydraulic system according to claim 1, further comprising a cooling fan (7);
the cooling fan (7) is used for cooling the high temperature of the hot oil, thereby preventing the hydraulic system from overheating and causing damage to hydraulic components.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921687359.5U CN210859420U (en) | 2019-10-10 | 2019-10-10 | Crawler-type aerial working platform hydraulic system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921687359.5U CN210859420U (en) | 2019-10-10 | 2019-10-10 | Crawler-type aerial working platform hydraulic system |
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| Publication Number | Publication Date |
|---|---|
| CN210859420U true CN210859420U (en) | 2020-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921687359.5U Expired - Fee Related CN210859420U (en) | 2019-10-10 | 2019-10-10 | Crawler-type aerial working platform hydraulic system |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911974A (en) * | 2021-09-26 | 2022-01-11 | 常州新兰陵电力辅助设备有限公司 | New forms of energy high altitude platform energy-saving control device |
| CN113958543A (en) * | 2021-09-27 | 2022-01-21 | 太原重工股份有限公司 | Traveling mechanism control system and control method thereof |
| CN114933267A (en) * | 2022-06-14 | 2022-08-23 | 湖南星邦智能装备股份有限公司 | Walking control method, device and equipment for aerial work platform and storage medium |
-
2019
- 2019-10-10 CN CN201921687359.5U patent/CN210859420U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113911974A (en) * | 2021-09-26 | 2022-01-11 | 常州新兰陵电力辅助设备有限公司 | New forms of energy high altitude platform energy-saving control device |
| CN113958543A (en) * | 2021-09-27 | 2022-01-21 | 太原重工股份有限公司 | Traveling mechanism control system and control method thereof |
| CN114933267A (en) * | 2022-06-14 | 2022-08-23 | 湖南星邦智能装备股份有限公司 | Walking control method, device and equipment for aerial work platform and storage medium |
| CN114933267B (en) * | 2022-06-14 | 2024-02-23 | 湖南星邦智能装备股份有限公司 | Walking control method, device, equipment and storage medium for aerial working platform |
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Granted publication date: 20200626 |