CN2646448Y - High-low pressure switching valve for drawing concrete pump - Google Patents
High-low pressure switching valve for drawing concrete pump Download PDFInfo
- Publication number
- CN2646448Y CN2646448Y CN 200320101853 CN200320101853U CN2646448Y CN 2646448 Y CN2646448 Y CN 2646448Y CN 200320101853 CN200320101853 CN 200320101853 CN 200320101853 U CN200320101853 U CN 200320101853U CN 2646448 Y CN2646448 Y CN 2646448Y
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- Prior art keywords
- valve block
- low pressure
- concrete pump
- lower valve
- utility
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 238000004891 communication Methods 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 238000007789 sealing Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000000664 rectum Anatomy 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
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Abstract
The utility model relates to a high low pressure diverter valve of towed concrete pump, characteristics are become by spare parts such as last valve block, lower valve block, connecting bolt, O shape sealing washer, and upper and lower valve block is connected by connecting bolt. The hydraulic system driving cylinder and the main oil duct oil inlet and return pipe are collected in the lower valve block, the liquid can be communicated with the rod cavity or the rodless cavity of the driving cylinder through the communication with the internal oil duct of the upper valve block, and the communication state of the internal oil ducts of the valve block can be changed through the horizontal rotation of the upper valve block, so that the oil inlet and return conversion of the driving cylinder is realized. The utility model has the characteristics of easy operation, switch reliably, the fault rate is low, with low costs, loss of pressure is little etc, is the high-low pressure auto-change over device that can the wide application in concrete pump machine.
Description
One, technical field:
The utility model relates to a kind of towed concrete pump high low pressure switching valve, is used for the hydrovalve that the towed concrete pump hydraulic system realizes that the high low pressure working state is switched specifically, belongs to hydrovalve class cases of otherwise standard design field.
Two, background technique:
Domestic present existing technical scheme has two kinds: a kind of is that body cap is board-like, i.e. hub cap plate 180 degree.A kind of 2/2-way cartridge valve formula selector valve that is to use.The former body is big, and indexing big (180 degree) is taken over conversion inconvenient, the many and operation effort of leakage pollution.The latter is easy to operate, but because the machining accuracy height makes its cost higher, and because its latus rectum is little, so the pressure loss is big.
In the towed concrete pump hydraulic system, when the drive cylinder rod chamber leads to feed liquor, can realize the big discharge capacity work of pump machine low pressure, when rodless cavity leads to feed liquor, can realize the work of pump machine high pressure float amount, the use of switching valve can make the pump machine realize two kinds of change working, to satisfy the engineer operation demand to the full extent.Existing technology or hydraulic fluid leak pollute many, and the operation effort, or cost height and the pressure loss are big.
Three, goal of the invention:
The purpose of this utility model is provide at the deficiencies in the prior art part a kind of simple in structure, easy to operate, the armstrong's patent device realizes dragging the high low pressure switching function of pump hydraulic system cheaply, and the hydraulic fluid leak pollution and the pressure loss can be dropped to minimum a kind of towed concrete pump high low pressure switching valve, round structure of the present utility model has overcome aforesaid defective.
Four, summary of the invention:
The purpose of this utility model takes following measure to realize:
A kind of towed concrete pump high low pressure switching valve, it is characterized in that: uuper valve block, lower valve block connect as one by connecting bolt, be installed on O-ring seals in upper and lower valve piece joint, on lower valve block, be installed on the interface of hydraulic system drive cylinder and the interface of main oil gallery oil inlet and oil return pipe.
Uuper valve block, lower valve block profile are circular.Uuper valve block level conversion angle is 60 degree.
Five, invention effect:
The inside trapped fuel that the utility model uses is few, indexing little (60 degree).So when switching, oil liquid leakage is few.Not as good as body cap board-like 1/10th.Because simple in structure, processing that must the extra high valve opening of precision, so the too late cartridge valve class selector valve of manufacture cost 1/10th, it is big to have latus rectum simultaneously, the characteristics that the pressure loss is little.
All used the utility model in the pump product various the dragging of HBT60, HBTS90-12-110, the HBTS90-12-187 of our factory production, use condition is good.Be the typical structure that low-cost, simple in structure realization high low pressure switches, and become one of remarkable difference with domestic like product.
Six, accompanying drawing and drawing explanation:
Fig. 1 is a low-pressure state oil circuit connection diagram of the present utility model;
Fig. 2 is a high pressure conditions oil circuit connection diagram of the present utility model;
Fig. 3 is a structural representation of the present utility model.
Wherein: (1)-uuper valve block, (2)-lower valve block, (3)-connecting bolt, (4)-O-ring seals, (5)-drive cylinder, (6)-main oil gallery oil inlet and oil return pipe.
Seven, embodiment:
Below in conjunction with accompanying drawing enforcement of the present utility model is described in detail:
Switching valve of the present utility model divides two up and down, and profile is rounded.Inside has oil duct to communicate.Drive cylinder 5 and main oil gallery oil inlet and oil return pipe 6 come together on the lower valve block 2, by communicating with the inside oil duct of uuper valve block 1, can realize the rod chamber or the logical feed liquor of rodless cavity of drive cylinder 5, by horizontally rotating of uuper valve block 1, can change the communication state of the inner oil duct of valve piece, to realize that drive cylinder 5 advances, the conversion of oil return.
This device switches for armstrong's patent, shown in accompanying drawing 1,2,3, unclamps connecting bolt 3, and uuper valve block 1 is rotated counterclockwise 60 degree, tightens connecting bolt again, can finish oil circuit variation of 2 from accompanying drawing 1 to accompanying drawing, realizes that switching valve is by the conversion of low pressure to high pressure.
The utility model has the advantages that: simple in structure, easy to process, cost is low.
Claims (3)
1, a kind of towed concrete pump high low pressure switching valve, it is characterized in that: uuper valve block (1), lower valve block (2) connect as one by connecting bolt (3), be installed on O-ring seals (4) in upper and lower valve piece joint, on lower valve block, be installed on the interface of hydraulic system drive cylinder (5) and the interface of main oil gallery oil inlet and oil return pipe (6).
2, a kind of towed concrete pump high low pressure switching valve according to claim 1 is characterized in that: uuper valve block (1), lower valve block (2) profile are for circular.
3, a kind of towed concrete pump high low pressure switching valve according to claim 1 is characterized in that: uuper valve block (1) level conversion angle is 60 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320101853 CN2646448Y (en) | 2003-10-14 | 2003-10-14 | High-low pressure switching valve for drawing concrete pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320101853 CN2646448Y (en) | 2003-10-14 | 2003-10-14 | High-low pressure switching valve for drawing concrete pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2646448Y true CN2646448Y (en) | 2004-10-06 |
Family
ID=34304969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320101853 Expired - Lifetime CN2646448Y (en) | 2003-10-14 | 2003-10-14 | High-low pressure switching valve for drawing concrete pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2646448Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012062167A1 (en) * | 2010-11-12 | 2012-05-18 | 北汽福田汽车股份有限公司 | Hydraulic system |
| CN111287926A (en) * | 2018-11-21 | 2020-06-16 | 利勃海尔混凝土泵有限公司 | Concrete pump assembly |
-
2003
- 2003-10-14 CN CN 200320101853 patent/CN2646448Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012062167A1 (en) * | 2010-11-12 | 2012-05-18 | 北汽福田汽车股份有限公司 | Hydraulic system |
| CN111287926A (en) * | 2018-11-21 | 2020-06-16 | 利勃海尔混凝土泵有限公司 | Concrete pump assembly |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20131014 Granted publication date: 20041006 |