CN205858825U - The shuttle valve of position unloading function and fluid motor-driven brakes in a kind of band - Google Patents
The shuttle valve of position unloading function and fluid motor-driven brakes in a kind of band Download PDFInfo
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- CN205858825U CN205858825U CN201620802708.3U CN201620802708U CN205858825U CN 205858825 U CN205858825 U CN 205858825U CN 201620802708 U CN201620802708 U CN 201620802708U CN 205858825 U CN205858825 U CN 205858825U
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- oil
- valve
- shuttle valve
- spool
- road
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Abstract
The utility model discloses shuttle valve and the fluid motor-driven brakes of position unloading function in a kind of band, belong to fluid motor-driven braking technology field.The top of shuttle valve valve pocket of the present utility model is connected with oil-out C by oil road, the bottom of described valve pocket is provided with back oil road, the inside of spool is machined with the through hole being vertically distributed, and the left and right two ends of spool are provided with elasticity reset device, when hydraulic system fuel cut-off, spool forced resetting is made, so that oil road, through hole and back oil road connection form the unloading channel of shuttle valve by elasticity reset device；Fluid motor-driven brakes of the present utility model, including acting on brake and the shuttle valve of hydraulic motor, the oil-out C of described shuttle valve is connected with the interface that surges of brake by pipeline, described shuttle valve employing shuttle valve described in any of the above-described item.This utility model can make shuttle valve carry out pressure release as requested such that it is able to ensures the normal brake application of brake, makes hydraulic motor gear drive normal work.
Description
Technical field
This utility model belongs to fluid motor-driven braking technology field, more particularly, it relates to position off-load in a kind of band
The shuttle valve of function and fluid motor-driven brakes.
Background technology
Along with economic develops rapidly, the carrying of wood mainly by log grapple, is grabbed wood by sawmill and relevant factory
Device is the important plant equipment in timber loader, and the quality of log grapple performance directly affects the work efficiency that timber captures.
And existing log grapple mainly includes that frame for movement and fluid pressure type two kinds, mechanical type are that the machine driving between relying part part drives and grabs wood
The Guan Bi of device or open, fluid pressure type is to control hydraulic rotary motor both forward and reverse directions by hydraulic pump to turn round, thus controls to grab wood
The motion of device, greatly reduces parts transmission.
Fluid pressure type revolution log grapple the most generally drives grab bucket to rotate by rotating driving device, and shows
The rotation having fluid pressure type revolution log grapple drives and mostly uses worm and gear driving means, owing to worm and gear driving means has
Good auto-lock function, it is not necessary to use extra brake unit to be braked, but worm screw is easily damaged in transmission process, needs
Often changing, thus affect the normal operation of log grapple, cause its work efficiency low, operating cost is greatly increased.
In order to solve problem above, applicant uses gear to drive replacement worm and gear driving means, such that it is able to reduce
The damage of device for revolving and driving and replacing, significantly improve the work efficiency of log grapple.It is to pass through hydraulic motor that said gear drives
Drive gear mechanism to make gyration, thus drive grab bucket to carry out rotating, but not there is due to gear auto-lock function, it is impossible to be real
Existing log grapple rotates the braking driven, it is therefore desirable to arranges special brake and is braked fluid motor-driven.Existing liquid
The brake that pressure motor drives generally uses normally closed type multiple disk brake, the oil-in of this brake and the oil-out of shuttle valve
It is connected, when by shuttle valve to the oil-in fuel feeding of brake, pushes piston open thus by brake by oil pressure counter spring force
Open, make fluid motor-driven run well；When closing hydraulic system, hydraulic system fuel cut-off, the oil pressure in brake
Release is also promoted piston by spring force, thus realizes the braking of hydraulic motor.But when fluid oil return in above-mentioned brake, by
Too high in hydraulic system return oil pressure, thus cause existing shuttle valve can not pressure release as requested, in turn resulting in brake can not be just
Often braking, affects the normal work of fluid motor-driven.
As, Chinese Patent Application No. 200820087350.6, filing date on 05 16th, 2008, invention and created name
For: hydraulic permeability reversing gear time delay buffer-braking mechanism, this application case includes the valve group connecting hydraulic motor, drives hydraulic motor rotary
The reversal valve in dynamic direction, and realize brake the brakes that hydraulic motor time delay buffers is sealedly connected in valve group,
During startup, hydraulic oil opens brake and balanced valve through reversal valve by high pressure shuttle and one-way throttle valve, makes whole slewing equipment
Normal work；The system pressure pop-off when stopping, due to the pressure holding function of one-way throttle valve, slowly releasing a part of oil pressure
Put, carry out the shut-in time of delay balance valve and brake such that it is able to realize pooling feature, make apparatus for rotating being used to when stopping
Property impact release, the purpose of impact thus the equipment that reaches operates steadily, eliminates.But the fluid in brake is the most not in this application case
Can smoothly oil return, thus cause brake can not normal brake application, affect normally working of fluid motor-driven.
Utility model content
1. utility model to solve the technical problem that
When the purpose of this utility model is to overcome existing fluid motor-driven to use gear to carry out transmission, due to hydraulic pressure system
System return oil pressure is too high, thus causes the brake can not the deficiency of normal brake application, it is provided that the shuttle of position unloading function in a kind of band
Valve and fluid motor-driven brakes.This utility model can effectively eliminate back pressure, makes shuttle valve carry out pressure release as requested,
It is thus possible to ensure the normal brake application of brake, hydraulic motor gear is made to drive normal work.
2. technical scheme
For reaching above-mentioned purpose, the technical scheme that this utility model provides is:
One, the shuttle valve of position unloading function in a kind of band of the present utility model, including valve body and spool, described valve inner
Being provided with valve pocket, spool is positioned at valve pocket inside and can move left and right along valve pocket；The left and right two ends of described valve pocket respectively with the first oil-feed
Mouth A1 and the second oil-in B1 is connected, and the top of described valve pocket is connected with oil-out C by oil road, the end of described valve pocket
Portion is provided with back oil road, and the middle part of spool is machined with step trough, and the left and right two ends of spool are provided with elasticity reset device, work as hydraulic pressure
During system fuel cut-off, make position in spool force revert by elasticity reset device, so that logical between oil road and back oil road
Cross step trough connection and form the unloading channel of shuttle valve.
Further, described elasticity reset device includes the first spring and the second spring, wherein, the two of the first spring
End is fixedly connected with the screw plug of valve pocket left end and the left end of spool respectively, the two ends of the second spring respectively with the screw plug of valve pocket right-hand member and
The right-hand member of spool is fixedly connected with, and when spool is in middle position, above-mentioned two spring is in without deformation state.
Further, the first described spring and the second spring are identical two springs.
Further, described oil road includes the first oil road, the second oil road and the 3rd oil road, when spool position
When valve pocket right-hand member, the first described oil-in A1 and the first oil road are unfolded into path；When spool is positioned at valve pocket left end,
The second described oil-in B1 and the 3rd oil road are unfolded into path；When spool is in middle position, the second described oil road
Formation off-load path is connected with between back oil road.
Further, described oil-out C is connected with the brake acting on hydraulic motor by pipeline；Described returns
Oil duct is connected with oil return opening D, and oil return opening D is connected with fuel tank by pipeline.
Its two, a kind of fluid motor-driven brakes of the present utility model, including the braking acting on hydraulic motor
Device and shuttle valve, the oil-out C of described shuttle valve is connected with the interface that surges of brake by pipeline, and described shuttle valve uses above-mentioned
One described shuttle valve.
Further, the back oil road of described shuttle valve is connected with oil return opening D, and oil return opening D is connected with fuel tank by pipeline.
Further, this brakes also includes that oil pump and reversal valve, the delivery outlet of described oil pump pass through one-way throttle
Valve is connected with the oil inlet P of reversal valve, and the oil return inlet T of described reversal valve is connected with fuel tank, two actuator ports of this reversal valve
A, B are connected with two oil-ins A1, B1 of shuttle valve and two oil-ins of hydraulic motor by pipeline respectively.
Further, described oil pump is connected with motor, and the oil-in of this oil pump is connected with fuel tank.
3. beneficial effect
Use the technical scheme that this utility model provides, compared with prior art, there is following remarkable result:
(1) shuttle valve of position unloading function in a kind of band of the present utility model, the top of described valve pocket is passed through oil road and is gone out
Hydraulic fluid port C is connected, and the bottom of described valve pocket is provided with back oil road, and the middle part of spool is machined with step trough, and the left and right two ends of spool
It is provided with elasticity reset device, when hydraulic system fuel cut-off, makes position in spool force revert by elasticity reset device, thus
Make between oil road with back oil road, to be connected the unloading channel forming shuttle valve by step trough.This utility model is filled by elastic reset
Put and the setting of unloading channel, such that it is able to the fluid in making brake is well on oil return by unloading channel, eliminate
Back pressure affects, overcome existing hydraulic motor brake can not the deficiency of normal brake application, thus advantageously ensure that hydraulic motor
The normal work driven.
(2) shuttle valve of position unloading function in a kind of band of the present utility model, described elasticity reset device includes the first bullet
Spring and the second spring, wherein, the two ends of the first spring are fixedly connected with the screw plug of valve pocket left end and the left end of spool respectively, the second bullet
The two ends of spring are fixedly connected with the screw plug of valve pocket right-hand member and the right-hand member of spool respectively, and when spool is in middle position, above-mentioned two bullet
Spring is in without deformation state, thereby may be ensured that when hydraulic system quits work, no matter hydraulic motor be in rotating forward or
Reversion, all can guarantee parking position accuracy and the smooth off-load system of brake of spool by the effect of the first spring and the second spring
Dynamic.
(3) shuttle valve of position unloading function in a kind of band of the present utility model, its oil road includes the first oil road, second goes out
Oil duct and the 3rd oil road, by being independently arranged the oil road under different operating state, such that it is able to prevent shuttle valve each
Interfering between hydraulic fluid port and different operating state, further ensure the normal work of shuttle valve and the normal brake application of brake and
Release braking.
(4) shuttle valve of position unloading function in a kind of band of the present utility model, its back oil road is connected with oil return opening D, and oil return
Mouth D is connected with fuel tank by pipeline, such that it is able to the fluid in brake is circulated utilization, prevents the wasting of resources.
(5) a kind of fluid motor-driven brakes of the present utility model, including the brake acting on hydraulic motor
And shuttle valve, by the structure of shuttle valve is optimized design so that it is there is middle position unloading function, thereby may be ensured that brake
Normal off-load and braking, fluid motor-driven normally works.
Accompanying drawing explanation
Fig. 1 is the structural representation of the shuttle valve of position unloading function in a kind of band of the present utility model；
Fig. 2 is the cross-sectional schematic in A-A direction along Fig. 1；
Fig. 3 is the operation principle schematic diagram of fluid motor-driven brakes of the present utility model.
Label declaration in schematic diagram:
1, valve body；2, spool；201, step trough；301, the first spring；302, the second spring；4, screw plug；501, first goes out
Oil duct；502, the second oil road；503, the 3rd oil road；6, back oil road；7, hydraulic motor；8, fuel tank；9, reversal valve；10, single
To choke valve；11, oil pump；12, motor；13, brake.
Detailed description of the invention
For further appreciating that content of the present utility model, in conjunction with drawings and Examples, this utility model is retouched in detail
State.
Embodiment 1
As shown in Figure 1 and Figure 2, the shuttle valve of position unloading function in a kind of band of the present embodiment, including valve body 1 and spool 2, institute
Stating valve body 1 inside and be provided with valve pocket, spool 2 is positioned at valve pocket inside and can move left and right along valve pocket；The left and right two ends of described valve pocket are divided
Not being connected with the first oil-in A1 and the second oil-in B1 by oil input channel, above-mentioned oil input channel is vertically arranged with valve pocket, described
The top of valve pocket is connected with oil-out C by oil road, and this oil-out C passes through pipeline and the brake acting on hydraulic motor
It is connected.In the present embodiment, the bottom of valve pocket is provided with back oil road 6, and the middle part of spool 2 is machined with step trough 201 and (will process by spool 2
For mid diameter less than the stepped cylindrical shape structure of two ends diameter), and the left and right two ends of spool 2 are provided with elasticity reset device, when
During hydraulic system fuel cut-off, make position in spool 2 force revert by elasticity reset device, so that oil road, step trough 201
And connection forms the unloading channel of shuttle valve between back oil road 6.
What deserves to be explained is, existing shuttle valve generally comprises only three paths, i.e. two oil-ins and an oil-out, works as liquid
Pressure system fuel cut-off, i.e. during the fluid oil return in brake, owing to hydraulic system return oil pressure is too high, thus causes existing shuttle
Valve can not carry out pressure release as requested, affects the normal brake application of brake, and this is also to use hydraulic motor gear to drive as driving
Ever-present problem during dynamic system, but suffer from and solved the most well.Inventor has been surprisingly found that through studying for a long period of time,
By using the shuttle valve of the present embodiment, i.e. by elasticity reset device and the setting of unloading channel, such that it is able to make brake
In fluid be well on oil return by unloading channel, eliminating back pressure affects, and overcomes the brake of existing hydraulic motor not
The deficiency of energy normal brake application, thus advantageously ensure that the normal work of fluid motor-driven.
Embodiment 2
As Figure 1-3, in a kind of band of the present embodiment, the shuttle valve of position unloading function, including valve body 1 and spool 2, described
Valve body 1 is internal is provided with valve pocket, and spool 2 is positioned at valve pocket inside and can move left and right along valve pocket；The left and right two ends of described valve pocket are respectively
Being connected with the first oil-in A1 and the second oil-in B1 by oil input channel, above-mentioned oil input channel is vertically arranged with valve pocket, thus one
Aspect can pass through the first oil-in A1 and second oil-in B1 oil-feed in shuttle valve valve pocket, on the other hand can also be by first
Oil-in A1 and the second oil-in B1 is to two oil-in A2, B2 oil-feeds of hydraulic motor 7.The top of above-mentioned valve pocket is by fuel-displaced
Road is connected with oil-out C, and this oil-out C is connected with the brake acting on hydraulic motor by pipeline.Valve in the present embodiment
The bottom in chamber is provided with back oil road 6, and the middle part of spool 2 is machined with step trough 201, and the left and right two ends of spool 2 are provided with elastic reset
Device, when hydraulic system fuel cut-off, makes position in spool 2 force revert by elasticity reset device so that oil road with
Formed the unloading channel of shuttle valve by step trough 201 connection between back oil road 6.
The elasticity reset device of the present embodiment includes the first spring 301 and the second spring 302, wherein, the first spring 301
Two ends are fixedly connected with the screw plug 4 of valve pocket left end and the left end of spool 2 respectively, the two ends of the second spring 302 respectively with valve pocket right-hand member
Screw plug 4 and the right-hand member of spool 2 be fixedly connected with, when spool 2 is in middle position, above-mentioned two spring is in without deformation state, i.e.
Recovering former length, thereby may be ensured that when hydraulic system quits work, no matter hydraulic motor 7 is in rotating forward or reversion, equal energy
The parking position accuracy of spool 2 and the smooth off-load system of brake 13 is guaranteed by the effect of the first spring 301 and the second spring 302
Dynamic.Above-mentioned first spring 301 and the second spring 302 are identical two springs, such that it is able to avoid due to spring itself
The error that pressure difference is caused, is further ensured that the normal brake application of brake.
The oil road of the present embodiment includes the first oil road the 501, second oil road 502 and the 3rd oil road 503, works as spool
2 when being positioned at valve pocket right-hand member, and the first described oil-in A1 and the first oil road 501 are unfolded into path, and fluid enters by first
Brake 13 is entered through oil-out C after hydraulic fluid port A1, the first oil road 501；When spool 2 is positioned at valve pocket left end, described second
Oil-in B1 and the 3rd oil road 503 are unfolded into path, fluid by after the second oil-in B1, the 3rd oil road 503 through going out
Hydraulic fluid port C enters brake 13；When spool 2 is in middle position, described second oil road 502 and back oil road 6 are interconnected formation
Off-load path, the fluid in brake carries out oil return through this off-load path.Above-mentioned back oil road 6 is connected with oil return opening D, and oil return opening
D is connected with fuel tank 8 by pipeline, such that it is able to the fluid in brake 13 is circulated utilization, prevents the wasting of resources.This reality
Execute example by being independently arranged by the oil road under different operating state, such that it is able to prevent each hydraulic fluid port of shuttle valve and different operating
Interfering between state, further ensures the normal work of shuttle valve and the normal brake application of brake and releasing braking.
A kind of fluid motor-driven brakes of the present embodiment, including acting on the brake 13 of hydraulic motor 7, shuttle
Valve, oil pump 11 and reversal valve 9, described oil pump 11 is connected with motor 12, and the oil-in of this oil pump 11 is connected with fuel tank 8, institute
The delivery outlet stating oil pump 11 is connected with the oil inlet P of reversal valve 9 by one-way throttle valve 10, the oil return inlet T of reversal valve 9 and fuel tank
8 are connected, and two actuator ports A, B of this reversal valve 9 are respectively by pipeline and two oil-ins A1, B1 of shuttle valve and hydraulic pressure horse
Reach 7 two oil-ins A2, B2 be connected (concrete, be by the first oil-in A1 and the second oil-in B1 in shuttle valve valve pocket
And two oil-in fuel feeding of hydraulic motor 7), the oil-out D of above-mentioned shuttle valve is by the interface that surges of pipeline with brake 13
Being connected, shuttle valve used herein uses the shuttle valve of position unloading function in the band of the present embodiment.
The operation principle schematic diagram of the fluid motor-driven brakes of the present embodiment is as it is shown on figure 3, its specific works
Process is as follows:
A, when oil pump 11 output fluid through reversal valve 9 A mouth export time, fluid by shuttle valve first oil-in A1 enter
Shuttle valve valve pocket, thus promote spool 2 to move right, the first oil-in A1 and the first oil road 501 are unfolded into path, other oil
Mouth is the most blocked, and pressure oil, by exiting into brake 13 through oil-out C after the first oil-in A1, the first oil road 501, solves
Except braking.Pressure oil enters the first working hole A2 of hydraulic motor 7 also by pipeline simultaneously, so that hydraulic motor 7 rotates forward, changes
It is its oil return opening to the B mouth of valve 9.
B, when the A mouth fuel cut-off of reversal valve 9, hydraulic motor 7 shuts down, and spool 2 is at the first spring 301 and second
Forced resetting under the effect of spring 302, position in i.e. recovering, so that the oil-out C and oil return opening D of shuttle valve connect, brake 13
Carry out pressure release such that it is able to the inertia of load is carried out effective brake.
C, when reversal valve 9 commutates, oil pump 11 output fluid through reversal valve 9 B mouth export and entered by the second of shuttle valve
Hydraulic fluid port B1 enters in the valve pocket of shuttle valve, thus promotes spool 2 to left movement, and the second oil-in B1 and the 3rd oil road 503 are opened
Forming path, other hydraulic fluid ports are the most blocked, and pressure oil is by entering through oil-out C after the second oil-in B1, the 3rd oil road 503
The interface that surges of brake 13, thus release braking, pressure oil enters the second working hole of hydraulic motor 7 also by pipeline simultaneously
B2, so that hydraulic motor 7 inverts, the A mouth of reversal valve 9 is its oil return opening.
Embodiment 3
A kind of log grapple gyroscopic drive system of the present embodiment, including hydraulic motor 7 and gear drive, passes through hydraulic pressure
Motor 7 drives gear drive to turn round, thus drives grab bucket to rotate, and the gyroscopic drive system of the present embodiment also wraps
Include the hydraulic motor brakes in embodiment 2.
Schematically being described this utility model and embodiment thereof above, this description does not has restricted, accompanying drawing
Shown in be also one of embodiment of the present utility model, actual structure is not limited thereto.So, if this area
Those of ordinary skill enlightened by it, creating in the case of objective without departing from this utility model, designing without creative
The frame mode similar to this technical scheme and embodiment, all should belong to protection domain of the present utility model.
Claims (9)
1. a shuttle valve for position unloading function in band, including valve body (1) and spool (2), described valve body (1) is internal is provided with valve pocket,
Spool (2) is positioned at valve pocket inside and can move left and right along valve pocket；The left and right two ends of described valve pocket respectively with the first oil-in A1 and
Second oil-in B1 is connected, and the top of described valve pocket is connected with oil-out C by oil road, it is characterised in that: described valve
The bottom in chamber is provided with back oil road (6), and the middle part of spool (2) is machined with step trough (201), and the left and right two ends of spool (2) are provided with
Elasticity reset device, when hydraulic system fuel cut-off, makes position in spool (2) force revert by elasticity reset device, thus
Make between oil road with back oil road (6), to be connected the unloading channel forming shuttle valve by step trough (201).
The shuttle valve of position unloading function in a kind of band the most according to claim 1, it is characterised in that: described elastic reset dress
Put and include the first spring (301) and the second spring (302), wherein, the two ends of the first spring (301) respectively with the spiral shell of valve pocket left end
The left side of stifled (4) and spool (2) is fixedly connected with, the two ends of the second spring (302) respectively with screw plug (4) and the spool of valve pocket right-hand member
(2) right side is fixedly connected with, and when spool (2) is in middle position, above-mentioned two spring is in without deformation state.
The shuttle valve of position unloading function in a kind of band the most according to claim 2, it is characterised in that: the first described spring
(301) and the second spring (302) is identical two springs.
4. according to the shuttle valve of position unloading function in a kind of band according to any one of claim 1-3, it is characterised in that: described
Oil road includes the first oil road (501), the second oil road (502) and the 3rd oil road (503), when spool (2) is positioned at valve pocket
During right-hand member, the first described oil-in A1 and the first oil road (501) are unfolded into path；When spool (2) is positioned at valve pocket left end
Time, the second described oil-in B1 and the 3rd oil road (503) are unfolded into path；When spool (2) is in middle position, described
Formation off-load path is connected between second oil road (502) with back oil road (6).
The shuttle valve of position unloading function in a kind of band the most according to claim 4, it is characterised in that: described oil-out C leads to
Piping is connected with the brake (13) acting on hydraulic motor；Described back oil road (6) is connected with oil return opening D, and oil return opening D
It is connected with fuel tank (8) by pipeline.
6. a fluid motor-driven brakes, including acting on brake (13) and the shuttle valve of hydraulic motor (7), described
The oil-out C of shuttle valve is connected with the interface that surges of brake (13) by pipeline, it is characterised in that: described shuttle valve uses right
Require the shuttle valve according to any one of 1-4.
A kind of fluid motor-driven brakes the most according to claim 6, it is characterised in that: the oil return of described shuttle valve
Road (6) is connected with oil return opening D, and oil return opening D is connected with fuel tank (8) by pipeline.
8. according to a kind of fluid motor-driven brakes described in claim 6 or 7, it is characterised in that: this brakes
Also including oil pump (11) and reversal valve (9), the delivery outlet of described oil pump (11) is by one-way throttle valve (10) and reversal valve (9)
Oil inlet P is connected, and the oil return inlet T of described reversal valve (9) is connected with fuel tank (8), two actuator ports A, B of this reversal valve (9)
It is connected with two oil-ins A1, B1 of shuttle valve and two oil-ins A2, B2 of hydraulic motor (7) by pipeline respectively.
A kind of fluid motor-driven brakes the most according to claim 8, it is characterised in that: described oil pump (11)
It is connected with motor (12), and the oil-in of this oil pump (11) is connected with fuel tank (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620802708.3U CN205858825U (en) | 2016-07-28 | 2016-07-28 | The shuttle valve of position unloading function and fluid motor-driven brakes in a kind of band |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620802708.3U CN205858825U (en) | 2016-07-28 | 2016-07-28 | The shuttle valve of position unloading function and fluid motor-driven brakes in a kind of band |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205858825U true CN205858825U (en) | 2017-01-04 |
Family
ID=57649419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620802708.3U Withdrawn - After Issue CN205858825U (en) | 2016-07-28 | 2016-07-28 | The shuttle valve of position unloading function and fluid motor-driven brakes in a kind of band |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205858825U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015147A (en) * | 2016-07-28 | 2016-10-12 | 安徽环球传动科技有限公司 | Shuttle valve with middle position unloading function and braking system for hydraulic motor drive |
| CN107513975A (en) * | 2017-10-13 | 2017-12-26 | 威海广泰空港设备股份有限公司 | Snow throwing throwing arm |
| CN107542057A (en) * | 2017-10-13 | 2018-01-05 | 威海广泰空港设备股份有限公司 | Remove the snow throwing snow vehicle |
| CN107700414A (en) * | 2017-10-13 | 2018-02-16 | 威海广泰空港设备股份有限公司 | Multifunctional snow blower |
-
2016
- 2016-07-28 CN CN201620802708.3U patent/CN205858825U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106015147A (en) * | 2016-07-28 | 2016-10-12 | 安徽环球传动科技有限公司 | Shuttle valve with middle position unloading function and braking system for hydraulic motor drive |
| CN106015147B (en) * | 2016-07-28 | 2017-12-15 | 安徽环球传动科技有限公司 | A kind of shuttle valve with middle position unloading function and fluid motor-driven brakes |
| CN107513975A (en) * | 2017-10-13 | 2017-12-26 | 威海广泰空港设备股份有限公司 | Snow throwing throwing arm |
| CN107542057A (en) * | 2017-10-13 | 2018-01-05 | 威海广泰空港设备股份有限公司 | Remove the snow throwing snow vehicle |
| CN107700414A (en) * | 2017-10-13 | 2018-02-16 | 威海广泰空港设备股份有限公司 | Multifunctional snow blower |
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