CN202251173U - Non-differential floating double-cylinder assembly - Google Patents
Non-differential floating double-cylinder assembly Download PDFInfo
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- CN202251173U CN202251173U CN2011203768081U CN201120376808U CN202251173U CN 202251173 U CN202251173 U CN 202251173U CN 2011203768081 U CN2011203768081 U CN 2011203768081U CN 201120376808 U CN201120376808 U CN 201120376808U CN 202251173 U CN202251173 U CN 202251173U
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- check valve
- valve
- oil
- hydraulic fluid
- fluid port
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Abstract
The utility model discloses a non-differential floating double-cylinder assembly. In the non-differential floating double-cylinder assembly, a main oil cylinder is connected and communicated with a first damping check valve; an auxiliary oil cylinder is connected and communicated with a second damping check valve; the oil inlet end of the first damping check valve is connected and communicated with the oil inlet end of the second damping check valve; the main oil cylinder is connected and communicated with a first hydraulic control check valve; the auxiliary oil cylinder is connected and communicated with a second hydraulic control check valve; the forward end of the first hydraulic control check valve is reversely connected and communicated with the oil outlet end of the second hydraulic control check valve; the hydraulic control end of the first hydraulic control check valve is connected and communicated with a rod cavity oil port of the main oil cylinder; the hydraulic control end of the second hydraulic control check valve is connected and communicated with a rod cavity oil port of the auxiliary oil cylinder; a check valve is connected between a first floating oil port and a second floating oil port of a cylinder body of the main cylinder body; and a two-way cartridge valve is connected between the first floating oil port and a rod-free cavity oil port of the main oil cylinder. The non-differential floating double-cylinder assembly can lift double cylinders synchronously, and the problem that a cab is not stressed uniformly is solved. The too high pressure of a system, which is caused by too heavy cab, is solved.
Description
Technical field
The utility model belongs to the automobile hydraulic technology, is specifically related to a kind of oil hydraulic cylinder assembly system of commercial-vehicle cab upender.
Background technique
At present, commercial-vehicle cab upender hydraulic cylinder assembly adopts single cylinder or differential unsteady lifting twin-tub, and single cylinder is installed in operator cabin one side, causes the operator cabin discontinuity; Though differential lifting twin-tub has solved the problem of operator cabin discontinuity, system pressure is big.More heavier than its operator cabin of commercial car of higher-end for configuration, general differential lifting twin-tub can't satisfy client's needs.
Summary of the invention
The purpose of the utility model is to provide a kind of non-differential unsteady twin-tub assembly, to satisfy its driver's cab turnover requirement of heavier commercial car.
The technological scheme of the utility model is: non-differential unsteady twin-tub assembly; It comprises master cylinder and auxiliary oil cylinder; The first damping one-way valve of master cylinder rod chamber hydraulic fluid port and oil-feed direction connects; The second damping one-way valve of auxiliary oil cylinder rod chamber hydraulic fluid port and oil-feed direction connects, and the oil inlet end of the first damping one-way valve and the second damping one-way valve connects; First Pilot operated check valve of master cylinder rodless cavity hydraulic fluid port and oil-feed direction connects; Second Pilot operated check valve of auxiliary oil cylinder rodless cavity hydraulic fluid port and oil-feed direction connects, and the oil outlet end of the forward end of first Pilot operated check valve and second Pilot operated check valve oppositely connects; The hydraulic control end of first Pilot operated check valve and master cylinder rod chamber hydraulic fluid port connect, and the hydraulic control end of second Pilot operated check valve and auxiliary oil cylinder rod chamber hydraulic fluid port connect; Offer the first unsteady hydraulic fluid port and the second unsteady hydraulic fluid port on the master cylinder cylinder body; First floats is connected with one-way valve between the hydraulic fluid port and the second unsteady hydraulic fluid port; First floats is connected two-way plug-in valve between hydraulic fluid port and the master cylinder rodless cavity hydraulic fluid port, and the oil inlet end of the two-way plug-in valve and second Pilot operated check valve connects.
Be connected with the 3rd damping one-way valve between the forward end of the two-way plug-in valve and second Pilot operated check valve.
First floats is connected in series with two one-way valves between the hydraulic fluid port and the second unsteady hydraulic fluid port, has connected first orifice valve between two one-way valves.
Connected second orifice valve between second Pilot operated check valve and the auxiliary oil cylinder rod chamber hydraulic fluid port.
The first damping one-way valve, first Pilot operated check valve, second Pilot operated check valve, one-way valve and two-way plug-in valve are integrated on the master cylinder.
Also be integrated with the 3rd damping one-way valve on the master cylinder.
The second damping one-way valve is integrated on the auxiliary oil cylinder.
The non-differential unsteady lifting twin-tub assembly of commercial-vehicle cab upender is realized the twin-tub synchronous lifting, solves the problem of operator cabin discontinuity.Solution is overweight because of operator cabin, causes the higher difficult problem of system pressure.
Description of drawings
The non-differential unsteady twin-tub assembly hydraulic schematic diagram of Fig. 1.
The integrated schematic representation of Fig. 2 master cylinder bonnet.
Embodiment
As shown in Figure 1; The casing wall of master cylinder 30 is provided with the first unsteady hydraulic fluid port 31 and the second unsteady hydraulic fluid port 32; First hydraulic fluid port 31 and second that floats floats to have connected between the hydraulic fluid port 32 and is in series with one- way valve 20,17, one-way valve 20, has connected orifice valve 21 between 17.Be connected with two-way plug-in valve 15 between the rodless cavity hydraulic fluid port D1 of the first unsteady hydraulic fluid port 31 and master cylinder 30.The first unsteady hydraulic fluid port 31 is connected with the reverse port 15.1 of two-way plug-in valve 15, and the rodless cavity hydraulic fluid port D1 of master cylinder 30 is connected with the first forward port 15.2 of two-way plug-in valve 15.
The rod chamber hydraulic fluid port B1 of master cylinder 30 is connected with the first damping one-way valve 11; The rod chamber hydraulic fluid port B2 of auxiliary oil cylinder 40 is connected with the second damping one-way valve 41; The first damping one-way valve 11 and the second damping one-way valve 41 all are damping one-way valves of band filter screen; The oil inlet end of the first damping one-way valve 11 and the second damping one-way valve 41 connects.
The rodless cavity hydraulic fluid port D1 of master cylinder 30 is connected with Pilot operated check valve 13, and the rod chamber hydraulic fluid port B1 of the hydraulic control end of Pilot operated check valve 13 and master cylinder 30 connects.The rodless cavity hydraulic fluid port D2 of auxiliary oil cylinder 40 is connected with Pilot operated check valve 8 through orifice valve 6, and the hydraulic control end of Pilot operated check valve 8 and the oil inlet end of the second damping one-way valve 41 connect.The backward end of the forward end of Pilot operated check valve 13 and Pilot operated check valve 8 connects.
The second forward port 15.3 of two-way plug-in valve 15 is connected with the forward end of Pilot operated check valve 8, and the forward end of Pilot operated check valve 8 also is connected with the 3rd damping one-way valve 3.
Above-mentioned assembly is connected with oil pump assy, and concrete oil pump assy comprises oil pump 51, one-way valve 52, overflow safety valve 53 and two position four-way valves 54.The A mouth that connects between the second forward port 15.3 of the 3rd damping one-way valve 3 and two-way plug-in valve 15 with two position four-way valves 54 connects, the first damping one-way valve 11 and the second damping one-way valve 41 be connected and the B mouth of two position four-way valves 54 connects.
As shown in Figure 2, the first damping one-way valve 11, first Pilot operated check valve 13, second Pilot operated check valve 8, one- way valve 20,17, orifice valve 21 and two-way plug-in valve 15, the 3rd damping one-way valve 3 is all integrated is on the bonnet 33 of master cylinder 30.13.1 is ball valve cores of first Pilot operated check valve 13 among the figure, and 8.1 is ball valve cores of second Pilot operated check valve 8, is hydraulic control spool 10, the hydraulic control valve ball core 12 of two first Pilot operated check valves 13 and second Pilot operated check valve 8 between ball valve core 13.1 and the ball valve core 8.1.4-pipe joint component 5-band throttle valve 6 joint components.
The working principle of this assembly is like Fig. 1, shown in 2:
1, lifting (not going out floating zone): the high pressure oil that oil pump pumps flows to master cylinder bonnet A mouth through flexible pipe, and one the tunnel flows to two-way plug-in valve 15 through pipeline a-b, and high pressure oil flows to hole 1, gets into the master cylinder rodless cavity; Another road is through the 3rd damping one-way valve 3; Overcome the ball valve core 8.1 that spring force is pushed second Pilot operated check valve 8 open through pipeline c-d; Difference flow ipe e and f-g; High pressure oil through pipeline e flows to auxiliary oil cylinder D2 mouth (directly communicating with its auxiliary oil cylinder rodless cavity) from the D1 mouth through flexible pipe, and the ball valve core 12,13.1 of pushing part first Pilot operated check valve 13 through the high pressure oil of pipeline f-g open flows to hole 1, gets into the master cylinder rodless cavity; Act on then piston rod is stretched out, ouput force lifting operator cabin.The oil of master cylinder rod chamber flows back to oil sump through the first damping one-way valve 11 from the B mouth through hole 3 through main oil pipe, the oil of auxiliary oil cylinder rod chamber through main oil pipe from B mouth oil return pond.
Lifting (cross floating zone): because the secondary oil pipe of master cylinder has high pressure oil to cut off fluid flows to hole 1 from b passage through the pre-compression force that the spool upper end that passage h-i acts on two-way plug-in valve 15 adds upper spring 16.This moment the high pressure oil that pumps of oil pump from the A mouth through the 3rd damping one-way valve 3, flow channel c-d, ball valve core 8.1, one road flow channel e that pushes second Pilot operated check valve 8 open flows to auxiliary oil cylinder D2 mouth; One the tunnel through passage f-g overcome first Pilot operated check valve 13 spring 14 pre-compression forces push the ball valve core 13.1 of first Pilot operated check valve 13 open; High pressure oil flows to hole 1; Get into the master cylinder rodless cavity, act on then piston rod is stretched out, ouput force lifting operator cabin.The oil of master cylinder rod chamber through main oil pipe through hole 9 through the first damping one-way valve 11 from B mouth oil return pond, the oil of auxiliary oil cylinder rod chamber through main oil pipe from B mouth oil return pond.
Descend: the high pressure oil that oil pump pumps flows to the B2 mouth of master cylinder and auxiliary oil cylinder respectively through flexible pipe; High pressure oil flows to hole 9 through the first damping one-way valve 11; Flow into loculus through main oil pipe and act on the ring belt, promote the pre-compression force that hydraulic control spool 10 overcomes spring 10.1 simultaneously, elder generation promotes hydraulic control valve ball core 12 and then pushes the ball valve core 13.1 of first Pilot operated check valve 13 open; The oil that makes the master cylinder rodless cavity is 1 flow channel g-f-e from the hole; Push the ball valve core 8.1 of second Pilot operated check valve 8 then open, make the oil of auxiliary oil cylinder rodless cavity and the oil while flow channel d-f of master cylinder rodless cavity, through flowing back to oil sump behind the 3rd damping one-way valve 3 throttling current stabilizations.。When main oil cylinder piston gets into floating zone, (continue fuel feeding), still descend by hydraulic control spool 10 control oil cylinders.
Come-up: (the oil pump selector valve must be in right position lowering position) is pressed into the B2 mouth for moving on the auxiliary oil cylinder piston with rod chamber fluid; Flow to master cylinder B1 mouth through flexible pipe; 9 through master cylinder main oil pipe entering master cylinder rod chamber from the hole; This moment, main oil cylinder piston moved on also, will certainly be at B1 mouth and the relative high pressure oil of rod chamber generation.Part high pressure oil overcomes the pre-compression force of the spring of one-way valve 20 through pipeline h-i through secondary oil pipe; Push one-way valve 20 open, make fluid flow into the j chamber, further overcome one-way valve 22; 2 flow into the master cylinder rodless cavity through the hole; Promote hydraulic control spool 10 simultaneously and make the unnecessary fluid of master cylinder rodless cavity 1 flow ipe g-f-e flows to the auxiliary oil cylinder rodless cavity through the hole, the auxiliary oil cylinder rodless cavity sucks fluid through a-c-d from oil sump simultaneously, replenishes the fluid of disappearance.
Float downward: (the oil pump selector valve must be in right position lowering position) auxiliary oil cylinder piston moves down rodless cavity fluid through the D mouth; Passage e-d has 8 sealings of second Pilot operated check valve; Fluid can only converge with the fluid that master cylinder does not have bar through the ball valve core 13.1 that passage f-g pushes first Pilot operated check valve 13 open, pushes the spool of two-way plug-in valve 15 simultaneously open, make fluid through b-a from A mouth oil return pond; This moment, rod chamber sucked fluid through the B1 mouth from oil sump, replenished the fluid of disappearance.
Operator cabin (removes floating zone) at an arbitrary position to be stopped.Mainly prevent that through two plug-in mountings 15, first Pilot operated check valve 13 and second Pilot operated check valve 8 fluid from flowing back to oil sump, thereby guarantee the realization of this function.
Prevent to connect the flexible pipe explosion and cause not controlled whereabouts in the operator cabin lifting process.The unexpected explosion of high pressure hose when master cylinder assembly D1 mouth connects is sealed by two cartridge valves 15, second Pilot operated check valve 8 jointly, guarantees externally seepage of the big chamber of master cylinder fluid, prevents whereabouts not controlled in the operator cabin lifting.
Claims (7)
1. non-differential unsteady twin-tub assembly; It comprises master cylinder and auxiliary oil cylinder; The first damping one-way valve that it is characterized in that master cylinder rod chamber hydraulic fluid port and oil-feed direction connects; The second damping one-way valve of auxiliary oil cylinder rod chamber hydraulic fluid port and oil-feed direction connects, and the oil inlet end of the first damping one-way valve and the second damping one-way valve connects; First Pilot operated check valve of master cylinder rodless cavity hydraulic fluid port and oil-feed direction connects; Second Pilot operated check valve of auxiliary oil cylinder rodless cavity hydraulic fluid port and oil-feed direction connects, and the oil outlet end of the forward end of first Pilot operated check valve and second Pilot operated check valve oppositely connects; The hydraulic control end of first Pilot operated check valve and master cylinder rod chamber hydraulic fluid port connect, and the hydraulic control end of second Pilot operated check valve and auxiliary oil cylinder rod chamber hydraulic fluid port connect; Offer the first unsteady hydraulic fluid port and the second unsteady hydraulic fluid port on the master cylinder cylinder body; First floats is connected with one-way valve between the hydraulic fluid port and the second unsteady hydraulic fluid port; First floats is connected two-way plug-in valve between hydraulic fluid port and the master cylinder rodless cavity hydraulic fluid port, and the oil inlet end of the two-way plug-in valve and second Pilot operated check valve connects.
2. non-according to claim 1 differential unsteady twin-tub assembly is characterized in that being connected with the 3rd damping one-way valve between the forward end of the two-way plug-in valve and second Pilot operated check valve.
3. non-according to claim 1 differential unsteady twin-tub assembly is characterized in that being connected in series with two one-way valves between the first unsteady hydraulic fluid port and the second unsteady hydraulic fluid port, has connected first orifice valve between two one-way valves.
4. non-according to claim 1 differential unsteady twin-tub assembly is characterized in that having connected second orifice valve between second Pilot operated check valve and the auxiliary oil cylinder rod chamber hydraulic fluid port.
5. non-according to claim 1 differential unsteady twin-tub assembly is characterized in that the first damping one-way valve, first Pilot operated check valve, second Pilot operated check valve, one-way valve and two-way plug-in valve are integrated on the master cylinder.
6. like the said non-differential unsteady twin-tub assembly of claim 5, it is characterized in that also being integrated with on the master cylinder the 3rd damping one-way valve.
7. non-according to claim 1 differential unsteady twin-tub assembly is characterized in that the second damping one-way valve is integrated on the auxiliary oil cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203768081U CN202251173U (en) | 2011-09-30 | 2011-09-30 | Non-differential floating double-cylinder assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203768081U CN202251173U (en) | 2011-09-30 | 2011-09-30 | Non-differential floating double-cylinder assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251173U true CN202251173U (en) | 2012-05-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203768081U Expired - Lifetime CN202251173U (en) | 2011-09-30 | 2011-09-30 | Non-differential floating double-cylinder assembly |
Country Status (1)
| Country | Link |
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| CN (1) | CN202251173U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671334A (en) * | 2013-12-12 | 2014-03-26 | 中联重科股份有限公司 | Hydraulic control system for synchronous rising and falling of oil-gas suspension oil cylinders and engineering vehicle |
| CN103661670A (en) * | 2013-12-31 | 2014-03-26 | 东风汽车公司 | Automobile auxiliary wheel device |
| CN104154164A (en) * | 2014-07-25 | 2014-11-19 | 安徽德鸿机件制造有限公司 | Damping oil cylinder for overturning of driving cabs of medium and heavy trucks |
| CN107255091A (en) * | 2017-08-16 | 2017-10-17 | 实用动力(中国)工业有限公司 | A kind of non-differential type truck cap overturning oil cylinder |
| CN109538548A (en) * | 2018-12-18 | 2019-03-29 | 北奔重型汽车集团有限公司 | A kind of non-differential cab lifting system |
| CN111608978A (en) * | 2020-04-29 | 2020-09-01 | 浙江科力车辆控制系统有限公司 | Non-differential servo type synchronous double-cylinder lifting mechanism |
-
2011
- 2011-09-30 CN CN2011203768081U patent/CN202251173U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103671334A (en) * | 2013-12-12 | 2014-03-26 | 中联重科股份有限公司 | Hydraulic control system for synchronous rising and falling of oil-gas suspension oil cylinders and engineering vehicle |
| CN103671334B (en) * | 2013-12-12 | 2016-01-27 | 中联重科股份有限公司 | A kind of hydraulic control system of oleo-pneumatic suspension oil cylinder synchronization lifting and engineering vehicle |
| CN103661670A (en) * | 2013-12-31 | 2014-03-26 | 东风汽车公司 | Automobile auxiliary wheel device |
| CN104154164A (en) * | 2014-07-25 | 2014-11-19 | 安徽德鸿机件制造有限公司 | Damping oil cylinder for overturning of driving cabs of medium and heavy trucks |
| CN104154164B (en) * | 2014-07-25 | 2015-12-30 | 安徽德鸿机件制造有限公司 | A kind of damping oil cylinder for medium-heavy automobile driver's cab turnover |
| CN107255091A (en) * | 2017-08-16 | 2017-10-17 | 实用动力(中国)工业有限公司 | A kind of non-differential type truck cap overturning oil cylinder |
| CN107255091B (en) * | 2017-08-16 | 2019-01-04 | 实用动力(中国)工业有限公司 | A kind of non-differential type truck cap overturning oil cylinder |
| CN109538548A (en) * | 2018-12-18 | 2019-03-29 | 北奔重型汽车集团有限公司 | A kind of non-differential cab lifting system |
| CN109538548B (en) * | 2018-12-18 | 2024-03-15 | 北奔重型汽车集团有限公司 | Non-differential cab lifting system |
| CN111608978A (en) * | 2020-04-29 | 2020-09-01 | 浙江科力车辆控制系统有限公司 | Non-differential servo type synchronous double-cylinder lifting mechanism |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Dongfeng (Shiyan) Vehicle Hydraulic Power Co., Ltd. Assignor: Dongfeng Car Co. Contract record no.: 2015420000142 Denomination of utility model: Non-differential floating double-cylinder assembly Granted publication date: 20120530 License type: Exclusive License Record date: 20150721 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |