CN202923447U - Hydraulic lifting system of mining dump truck - Google Patents
Hydraulic lifting system of mining dump truck Download PDFInfo
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- CN202923447U CN202923447U CN 201220611889 CN201220611889U CN202923447U CN 202923447 U CN202923447 U CN 202923447U CN 201220611889 CN201220611889 CN 201220611889 CN 201220611889 U CN201220611889 U CN 201220611889U CN 202923447 U CN202923447 U CN 202923447U
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- inserted valve
- oil
- lifting
- control cock
- valve
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Abstract
The utility model discloses a hydraulic lifting system of a mining dump truck. The hydraulic lifting system comprises an oil tank, a duplex lifting pump, a filter, a hydraulic control lifting system and a lifting cylinder, wherein the hydraulic oil in the oil tank is converged by the duplex lifting pump through the filter to form a convergence point to be delivered to the hydraulic control lifting system, and the lifting cylinder is controlled to work by controlling the hydraulic control lifting system; a first cartridge valve is arranged between the filter and an oil return tank and connected with a first control valve; and a first one-way valve is arranged between the filter and the convergence point. By adopting the structure, the security performance of the hydraulic lifting system of the mining dump truck can be improved, and the hydraulic lifting system can be better protected.
Description
Technical field
The utility model relates to quarry tipper, particularly the hydraulic lifting system of quarry tipper.
Background technology
Quarry tipper is mainly used in short-range transportation and loading and unloading ore, and for the ease of loading and unloading, the container of dumping car can overturn, and the action of its upset is normally realized by hydraulic efficiency pressure system.Existing quarry tipper hydraulic lifting system comprises fuel tank, steering pump, lifting pump, lifting valve, multiway valve, two Multi-stage lifting oil cylinders and pipeline.As being to be to be to disclose a kind of lifting control system of heavy mine dumper on March 16th, 2,011 18 Granted publication days of August in 2010 in the patent No. 201020507564.1 applyings date, comprise fuel tank, lifting pump, steering pump, described system also comprises multiway valve, lifting valve piece, described multiway valve comprises the load sensing oil circuit, and system also comprises the load sensing steering pump with the load sensing hydraulic fluid port; Multiway valve load sensing oil circuit is connected with the load sensing hydraulic fluid port of load sensing steering pump.The said system technical issues that need to address are: can not provide flow according to the needs of load, always there is the fluid of part to get back to fuel tank by the mode of overflow, these fluid are all in certain load underflow stream, therefore, relief power loss inevitably occurs.But, because the lifting of native system is by completing, when needs turn to by lifting pump and steering pump, the oil pressure of pump has offered handling maneuver due to transition, cannot realize the lifting action, in like manner, in case steering pump lost efficacy, but also can't realize lifting by lifting pump.Have, when the load of lifting was excessive, this system did not have safety precautions, easily damaged native system again.
Summary of the invention
For improving the safety performance of quarry tipper hydraulic lifting system, better protect hydraulic lifting system, the utility model provides a kind of quarry tipper hydraulic lifting system.
For achieving the above object, the quarry tipper hydraulic lifting system, comprise fuel tank, duplex lifting pump, filter, fluid control hoisting system and load lifting cylinder, the duplex lifting pump is transported to the fluid control hoisting system with the hydraulic oil in fuel tank through filter interflow formation junction of two streams, controls load lifting cylinder work by controlling the fluid control hoisting system; Be provided with the first inserted valve between filter and oil sump tank, be connected with the first control cock on the first inserted valve; Be provided with the first check valve between filter and junction of two streams.
As specializing, described hydraulic control system comprises inserted valve a, inserted valve b, inserted valve c, inserted valve d, control cock a, control cock b, control cock c and control cock d; The oil inlet of inserted valve a is connected with junction of two streams, and the oil outlet of inserted valve a is connected with the load lifting cylinder oil inlet, and the oil outlet of inserted valve a also is connected with the oil inlet of inserted valve b, and control cock a controls the work of inserted valve a; The oil outlet of inserted valve b is connected with oil sump tank, and control cock b controls inserted valve b work; The oil inlet of inserted valve c is connected with the oil inlet of inserted valve d, and the oil outlet of inserted valve is connected with oil sump tank, and control cock c controls the work of inserted valve c; The oil inlet of inserted valve d is connected with load lifting cylinder, and the oil outlet of inserted valve d is connected with oil sump tank, and control cock d controls the work of inserted valve d.
As improvement, be provided with balance cock on the mouth of load lifting cylinder.
The beneficial effects of the utility model are: owing to being provided with the first control cock and the first inserted valve; this first inserted valve is equivalent to by pass valve; when dumping car is being realized lifting when action; excessive in case load; control the first control cock action, the first inserted valve is opened, thereby realized the purpose of pressure release; to improve safe application performance, actv. has been protected hydraulic lifting system of the present utility model.Because lifting process is to realize separately by the duplex lifting pump, do not need the participation of steering pump, lifting action and handling maneuver can carry out separately simultaneously, therefore, lifting and turn to mutually interference-free.Described balance cock can be pressed its deadweight of cushioning balance and load and be improved hydraulic actuating cylinder or the stability of motion of perpendicular movement working part.
Description of drawings
Fig. 1 is hydraulic diagram of the present utility model.
The specific embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further elaborated.
As shown in Figure 1, the quarry tipper hydraulic lifting system comprises fuel tank 1, duplex lifting pump 2, high pressure filter 3, check valve 4, the first inserted valve 5, the first control cock 6, balance cock 7, fluid control hoisting system and load lifting cylinder 8.In the utility model, duplex lifting pump 2 is two oil outlets, forms twin pump, and the first inserted valve 5 is two, and the first control cock 6 is corresponding one first inserted valve 5 of controlling one by one.
Described the first control cock 6 is comprised of bi-bit bi-pass change-over valve and by pass valve, and in the utility model, the first inserted valve 5 is by pass valve.
As shown in Figure 1, duplex lifting pump 2 is transported to the hydraulic oil in fuel tank 1 in check valve 4 by high pressure filter 3, and after check valve 4, two-way hydraulic oil collaborates and forms junction of two streams.The input port of the first inserted valve 5 is connected with high pressure filter 3 delivery ports, and the mouth of the first inserted valve 5 is connected with oil sump tank, and in the utility model, oil sump tank is namely fuel tank 1, and described the first inserted valve 5 is controlled by the first control cock 6 and opened and closed.
Described hydraulic control system comprises inserted valve a, inserted valve b, inserted valve c, inserted valve d, control cock a, control cock b, control cock c and control cock d; The oil inlet of inserted valve a is connected with junction of two streams, and the oil outlet of inserted valve a is connected with load lifting cylinder 8 oil inlets, and the oil outlet of inserted valve a also is connected with the oil inlet of inserted valve b, and control cock a controls the work of inserted valve a; The oil outlet of inserted valve b is connected with oil sump tank 1, and control cock b controls inserted valve b work; The oil inlet of inserted valve c is connected with the oil inlet of inserted valve d, and the oil outlet of inserted valve is connected with oil sump tank 1, and control cock c controls the work of inserted valve c; The oil inlet of inserted valve d is connected with load lifting cylinder 8, and the oil outlet of inserted valve d is connected with oil sump tank 1, and control cock d controls the work of inserted valve d.Described control cock a and control cock d form by the bi-bit bi-pass change-over valve.Described control cock b and control cock d are comprised of change-over valve.
Be provided with balance cock 7 on the mouth of load lifting cylinder 8.
Quarry tipper hydraulic lifting system of the present utility model can be realized oil cylinder lifting, oil cylinder maintenance, oil-tank floating and oil cylinder down maneuver.Its process is respectively.
When lifting, control cock a and the first control cock 6 energisings, control cock d, control cock b and control cock c close, and namely lift inserted valve a and connect, and inserted valve c connects, and the first inserted valve 5 energisings are closed.
The composition of lifting fluid is: fuel tank 1-duplex lifting pump 2-high pressure filter 3-check valve 4-inserted valve a-load lifting cylinder rodless cavity-lifting rod chamber-balance cock 7-inserted valve c-fuel tank 1.
When load lifting cylinder 8 gave rise to terminal point, container touching travel switch 9, the first inserted valves 5 were opened, and realize overflow, stop the fuel feeding to lifting.Hydraulic oil through balance cock 7, returns to fuel tank 1 by inserted valve c from the load lifting cylinder rod chamber.
During the oil cylinder hold mode, the first control cock 6, control cock a, control cock b, control cock c and control cock d are all less than energising; Inserted valve a, b, c, d all do not open, and the first control cock 6 is connected, and the oil that Hydraulic Pump is pressed into returns to fuel tank 1 by the first inserted valve 5.
During the oil-tank floating state, control cock b and c energising, inserted valve b and c connect, and oil cylinder descends by gravity.Hydraulic oil returns to fuel tank 1 from inserted valve b.
When power descends, control cock d and wherein one first control cock 6 energisings, other control cock outages, inserted valve a disconnects, inserted valve d connects, and hydraulic oil flows back to fuel tank 1 by duplex lifting pump 2-high pressure filter 3-check valve 4-inserted valve d-balance cock 7-load lifting cylinder rod chamber-inserted valve b.
In the utility model; owing to being provided with the first control cock 6 and the first inserted valve 5; this first inserted valve 5 is equivalent to by pass valve; when realizing the lifting action, in case it is excessive to load, control the first control cock 6 actions when dumping car; the first inserted valve 5 is opened; thereby realize the purpose of pressure release, to improve safe application performance, actv. has been protected hydraulic lifting system of the present utility model.As shown in Figure 1, because lifting process is to realize separately by duplex lifting pump 2, steering pump 10 is realized separately turning to, and does not need the participation of steering pump 10, and lifting action and handling maneuver can carry out separately simultaneously, therefore, and lifting and turning to mutually not without interruption.Described balance cock 7 can be pressed its deadweight of cushioning balance and load and be improved hydraulic actuating cylinder or the stability of motion of perpendicular movement working part.
Claims (3)
1. quarry tipper hydraulic lifting system, comprise fuel tank, duplex lifting pump, filter, fluid control hoisting system and load lifting cylinder, the duplex lifting pump is transported to the fluid control hoisting system with the hydraulic oil in fuel tank through filter interflow formation junction of two streams, controls load lifting cylinder work by controlling the fluid control hoisting system; It is characterized in that: be provided with the first inserted valve between filter and oil sump tank, be connected with the first control cock on the first inserted valve; Be provided with the first check valve between filter and junction of two streams.
2. quarry tipper hydraulic lifting system according to claim 1, it is characterized in that: described hydraulic control system comprises inserted valve a, inserted valve b, inserted valve c, inserted valve d, control cock a, control cock b, control cock c and control cock d; The oil inlet of inserted valve a is connected with junction of two streams, and the oil outlet of inserted valve a is connected with the load lifting cylinder oil inlet, and the oil outlet of inserted valve a also is connected with the oil inlet of inserted valve b, and control cock a controls the work of inserted valve a; The oil outlet of inserted valve b is connected with oil sump tank, and control cock b controls inserted valve b work; The oil inlet of inserted valve c is connected with the oil inlet of inserted valve d, and the oil outlet of inserted valve is connected with oil sump tank, and control cock c controls the work of inserted valve c; The oil inlet of inserted valve d is connected with load lifting cylinder, and the oil outlet of inserted valve d is connected with oil sump tank, and control cock d controls the work of inserted valve d.
3. quarry tipper hydraulic lifting system according to claim 2, is characterized in that: be provided with balance cock on the mouth of load lifting cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611889 CN202923447U (en) | 2012-11-19 | 2012-11-19 | Hydraulic lifting system of mining dump truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220611889 CN202923447U (en) | 2012-11-19 | 2012-11-19 | Hydraulic lifting system of mining dump truck |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202923447U true CN202923447U (en) | 2013-05-08 |
Family
ID=48213441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220611889 Expired - Lifetime CN202923447U (en) | 2012-11-19 | 2012-11-19 | Hydraulic lifting system of mining dump truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202923447U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309551A (en) * | 2014-10-28 | 2015-01-28 | 广州电力机车有限公司 | Control system of 220t mine dump vehicle |
| CN111022394A (en) * | 2019-11-19 | 2020-04-17 | 一汽解放汽车有限公司 | Hydraulic integrated system |
-
2012
- 2012-11-19 CN CN 201220611889 patent/CN202923447U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104309551A (en) * | 2014-10-28 | 2015-01-28 | 广州电力机车有限公司 | Control system of 220t mine dump vehicle |
| CN104309551B (en) * | 2014-10-28 | 2017-07-07 | 广州电力机车有限公司 | 220 tons of quarry tipper control systems |
| CN111022394A (en) * | 2019-11-19 | 2020-04-17 | 一汽解放汽车有限公司 | Hydraulic integrated system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130508 |