CN207419362U - The front shovel of snow sweeper floats pressure automatic regulating apparatus - Google Patents
The front shovel of snow sweeper floats pressure automatic regulating apparatus Download PDFInfo
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- CN207419362U CN207419362U CN201721416385.5U CN201721416385U CN207419362U CN 207419362 U CN207419362 U CN 207419362U CN 201721416385 U CN201721416385 U CN 201721416385U CN 207419362 U CN207419362 U CN 207419362U
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- 241001417527 Pempheridae Species 0.000 title claims abstract description 33
- 230000001105 regulatory effect Effects 0.000 title claims abstract description 15
- 239000002828 fuel tank Substances 0.000 claims description 21
- 208000028804 PERCHING syndrome Diseases 0.000 claims description 3
- 239000003921 oil Substances 0.000 claims 22
- 230000005611 electricity Effects 0.000 claims 1
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 7
- 230000001680 brushing effect Effects 0.000 description 4
- 239000012530 fluid Substances 0.000 description 4
- 238000005096 rolling process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 244000007853 Sarothamnus scoparius Species 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 201000004569 Blindness Diseases 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000035558 fertility Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000001141 propulsive effect Effects 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
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Abstract
A kind of front shovel of snow sweeper floats pressure automatic regulating apparatus, and snow sweeper includes vehicle chassis bindiny mechanism, lifting cylinder is set in vehicle chassis bindiny mechanism；Front shovel stent is connected corresponding to the position in the left side of vehicle chassis connection with lifting cylinder, and the bottom at the both ends of long side direction is each provided with wheel；One group of front shovel, this group of front shovel, which follows, to be hinged on the left of the long side direction of front shovel stent on front shovel stent；Front shovel, which floats pressure automatic regulating apparatus, includes the hydraulic control station being located on snow sweeper car body, and hydraulic control station is connected with lifting cylinder hydraulic circuit and is connected with the Vehicle Controller of snow sweeper, feature：The hydraulic circuit that hydraulic control station is connected with lifting cylinder hydraulic circuit is equipped with to perceive the lifting cylinder operating pressure detecting sensor of the pressure of lifting cylinder, and lifting cylinder operating pressure detecting sensor is connected with Vehicle Controller.The wheel for ensuring to support front shovel stent obtains good ground pressure, ensures the clear snow effect of one group of front shovel.
Description
Technical field
The invention belongs to airport and road snow removing facility technology fields, and in particular to it is automatic that a kind of front shovel of snow sweeper floats pressure
Adjusting apparatus.
Background technology
In Snowfall, if the accumulated snow on airport particularly takeoff and landing runway cannot be removed in time in time, that
The Normal Take-Off And Landing of aircraft, which can unquestionably be influenced, can even lead to security incident.In view of this, snow removing vehicle for aerodrome is special into airport
It is the indispensable facility on the dual-use airport of the northern area of China.
Technical information on snow sweeper can be seen in disclosed Chinese patent literature, such as document A：CN201520951U
Recommendation has " front wheel driving middle snow sweeping roller brush type airport snow removal truck "；Document B：202705979U is provided with " a kind of airport, high speed
Snow sweep vehicle for highway "；Document C：CN103362097A introductions have " a kind of multifunction snow removing car "；Document D：CN204163041U is public
It is provided with " a kind of snow removal truck used in airport ", etc.；Document E：CN101694092B " snow removing vehicle for aerodrome " etc..
By the reading to being not limited to patent document exemplified above, the structural system as snow sweeper is usually wrapped
Include chassis, front shovel i.e. " snow pushing device " (also referred to as " snow blade "), the roller positioned at chassis middle part lower section positioned at headstock front lower place
Broom (also referred to as " roller brush ", the same below) and the blowing mechanism positioned at vehicle tail, deposite snow is pushed away remove by front shovel, Jin Eryou
The rolling and brushing brush of rolling and brushing brush roller cleans residual accumulated snow, then blows down the residual snow left when rolling and brushing brush cleans by blowing mechanism, by three
Road snow removing substantially can be fully on the level ground of removing machine place accumulated snow, road snow removing is similarly.
According to professional general knowledge, the lower edge of front shovel cannot be contacted with terrace, more particularly mounted on front shovel lower edge
The lower edge of front shovel perching knife, that is, clear snow knife needs to keep rational gap between terrace, otherwise can cause snow blade and airport terrace
All damages, therefore the penitent snow less than 10mm can be still left after front shovel clear snow on the terrace of airport, which is by drum broom
Rolling and brushing brush is cleared away.
In order to make between front shovel and terrace keep reasonably distance as the aforementioned be less than 10mm distance, thus usually by with
The lifting cylinder of the structural system of the vehicle chassis bindiny mechanism of vehicle chassis connection for the front shovel stent of installation front shovel to applying
Pressure (front shovel stent is connected with the lifting cylinder column of foregoing lifting cylinder), since front shovel stent is by front shovel stent supporting walking machine
Structure (i.e. " snow blade stent walking mechanism ") supports, thus substantially by foregoing lifting cylinder to front shovel stent supporting walking machine
The wheel rotation that is structural system and corresponding to front shovel both ends bottom corresponding to front shovel stent both ends bottom of structure adds presses over the ground
Power, this structure can be found in " the snow pushing dress of multifunction snow removing car of 105040625 A of Chinese invention patent publication No. CN recommendations
It puts ".Further, since front shovel is hinged by upper and lower strut and front shovel stent, and its during the work time on float downward
It is dynamic and swing, thus it is essentially front shovel pressure that foregoing front shovel, which floats pressure, it equally can be by C N to this
The reading of 105040625 A is understood.
Theoretically, as long as the pressure (hydraulic fluid pressure) of foregoing lifting cylinder is made to maintain a certain numerical value for example
The distance between 2MPa, front shovel and terrace can be protected, but during the snow removing of snow sweeper reality, often be present with
Various different situations, the typical example of this different situations is such as：Become with the length of different sizes, the snowfall time of snowfall
Snow deposit thickness difference under change, the difference of outdoor environment temperature, same background, etc., the thickness for gathering snow on the ground are each
It differs, so if only theoretically considering the ground pressure that lifting cylinder applies aforementioned wheel, then may be considered
Blindness, because during front shovel clear snow, the pressure of lifting cylinder can be varied from, it is difficult to remain at a default pressure
Force value degree.In view of this, if wheel ground pressure is too small, clear snow less effective if ground pressure is excessive, and can make vehicle
Preceding sedan-chair wheel soil fertility mitigation, influence the propulsive performance of snow sweeper, and pressure is excessive that also result in front shovel structure big because loading
And it is easily damaged.
In conclusion during snow sweeper snow removing, the knot of foregoing front shovel stent supporting walking mechanism is only always ensured that
The ground pressure of the wheel of structure system is just avoided that above-mentioned drawback, however in China and foreign countries' patent disclosed so far and non-patent
Be showed no in document it is all have referential technical inspiration, technical solution described below is to generate in this background
's.
The content of the invention
The task of the present invention, which is to provide, a kind of to be helped dynamically to predict the pressure change of lifting cylinder and makes lifting
The pressure of oil cylinder maintain the pressure value of setting always and use ensure for support front shovel stent wheel obtain it is good right
Ground pressure and avoid front shovel because avenge it is thick caused by reaction force generate bounce and the snow sweeper that ensures front shovel clear snow effect
Front shovel floats pressure automatic regulating apparatus.
The task of the present invention is so come what is completed, a kind of front shovel of snow sweeper floats pressure automatic regulating apparatus, and described removes
Sled includes a vehicle chassis bindiny mechanism being connected with the front on the chassis of snow sweeper car body, in the vehicle chassis bindiny mechanism
On be provided with lifting cylinder；One front shovel stent, the front shovel stent is in the position in the left side corresponding to the vehicle chassis bindiny mechanism
It puts and is connected with the lifting cylinder, and wheel is each provided in the bottom at the both ends of the long side direction of the front shovel stent；One
Group front shovel, this group of front shovel follow the left side of the long side direction of front shovel stent and are hinged on front shovel stent with state one by one
On；The front shovel, which floats pressure automatic regulating apparatus, includes the hydraulic control station being arranged on the snow sweeper car body, the hydraulic pressure
Control station is connected with the lifting cylinder hydraulic circuit and is connected with the Vehicle Controller electrical control of snow sweeper, is characterized in that
It is provided with to perceive lifting cylinder on the hydraulic circuit being connected with the lifting cylinder hydraulic circuit at the hydraulic control station
Pressure lifting cylinder operating pressure detecting sensor, the lifting cylinder operating pressure detecting sensor and the vehicle-mounted control
Device is electrically connected.
In the specific embodiment of the present invention, the right side of described one group of front shovel respectively by front shovel upper connecting rod and
Front shovel lower link and the left side of the front shovel stent are hinged.
In another specific embodiment of the present invention, front shovel shovel is respectively fixed in the lower part of one group of front shovel
Knife.
In another specific embodiment of the present invention, the lifting cylinder has a upper cylinder half chamber and once cylinder chamber,
Upper and lower cylinder chamber is separated by the oil cylinder column piston of the oil cylinder column of lifting cylinder, and the hydraulic control station includes fuel tank, oil pump, the
One valve block, the second valve block, overflow valve, pressure-biased valve, the first reversal valve, the second reversal valve, solenoid valve, electromagnetic relief valve and section
Valve is flowed, fuel tank is arranged on the snow sweeper car body, and oil pump is disposed on fuel tank, and the oil pump oil inlet of the oil pump is by oil pump oil inlet
Pipe is communicated with fuel tank, and the oil pump out of the mouth of oil pump is connected by oil pump outlet line with the first reversal valve, overflow valve, pressure-loaded
Valve, the first reversal valve and the second reversal valve are arranged on the first valve block, the tank drainback pipe of overflow valve and fuel tank and described
Oil pump outlet line communicate, pressure-biased valve is equally communicated with tank drainback pipe and oil pump outlet line, the first reversal valve with oil
Oil pump outlet line is communicated and communicated by the first pipeline with solenoid valve, and the second reversal valve passes through the second pipeline and tank drainback pipe phase
It is logical, and also communicated by the 3rd pipeline with the upper cylinder half chamber of the lifting cylinder, solenoid valve, electromagnetic relief valve and throttle valve are set
It puts on the second valve block, solenoid valve is communicated by the 4th pipeline with throttle valve, and the throttle valve passes through the 5th pipeline and lifting oil
The lower cylinder chamber of cylinder communicates, electromagnetic relief valve communicated with the 3rd pipeline and the electromagnetic relief valve also by the 6th pipeline with
The tank drainback pipe communicates, and the first valve block and the second valve block are arranged on the top of fuel tank；The front shovel stent
It is connected with the oil cylinder column；The lifting cylinder operating pressure detecting sensor is by pressure detecting sensor oil pipe in correspondence
Position between lifting cylinder and electromagnetic relief valve is connected with the 3rd pipeline.
In another specific embodiment of the present invention, set in the position of the oil pump oil inlet corresponding to the oil pump
There is oil filter.
In specific embodiment there are one the present invention, the upper cylinder half chamber of the 3rd pipeline and the lifting cylinder
It communicates, the 5th pipeline is communicated with the lower cylinder chamber of the lifting cylinder.
Technical solution provided by the invention is due to the hydraulic circuit being connected at hydraulic control station with lifting cylinder hydraulic circuit
It is upper to be provided with lifting cylinder operating pressure detecting sensor, thus dynamically felt by the lifting cylinder operating pressure detecting sensor
The pressure change of lifting cylinder is known, when the pressure of lifting cylinder is above or below pressure set points, by the work at hydraulic control station
Make and the pressure of lifting cylinder is made to maintain the pressure extent value of setting always, it is ensured that obtained for supporting the wheel of front shovel stent
Good ground pressure avoids one group of front shovel from using the shovel for ensureing one group of front shovel due to reaction force caused by avenging thickness is beated
Avenge effect.
Description of the drawings
Fig. 1 is the embodiment of the present invention schematic diagram.
Fig. 2 is the hydraulic control station of the present invention and lifting cylinder and lifting cylinder operating pressure detecting sensor and hydraulic pressure
The schematic diagram of control station hydraulic circuit connection.
Fig. 3 is the schematic diagram of the upper cylinder half chamber oil return of lifting cylinder shown in Fig. 2 and lower cylinder chamber oil inlet.
Specific embodiment
In order to which the technical spirit and advantageous effect of the present invention is more clearly understood, applicant is below with embodiment
Mode elaborate, but to the description of embodiment be not the limitation to the present invention program, it is any according to structure of the present invention
Think made only formal but not substantive equivalent transformation and be regarded as technical scheme scope.
The concept of every directionality for being related to upper, lower, left, right, front and rear or directionality is all in the following description
For the location of scheming for being described state, thus it cannot be understood as to technical solution provided by the invention
Be particularly limited to.
Fig. 1 is referred to, shows that the one of the structural system of snow sweeper is connected with the front on the chassis 11 of snow sweeper car body 1
Vehicle chassis bindiny mechanism 2 is provided with lifting cylinder 21 in the vehicle chassis bindiny mechanism 2；One front shovel stent 3, the front shovel
Stent 3 is connected in the position in the left side corresponding to aforementioned vehicle chassis bindiny mechanism 2 with foregoing lifting cylinder 21, and at this
The bottom at the both ends of the long side direction of front shovel stent 3 is each provided with wheel 31；One group of front shovel 4, this group of front shovel 4 follow front shovel branch
The left side of the long side direction of frame 3 is hinged on state one by one on front shovel stent 3.Due to the aforementioned structure of snow sweeper
Belong to the prior art, see, for example, the patent document that applicant refers in background technology column above and be particularly
CN105040625A, thus the not reinflated explanation of applicant.
Fig. 2 is referred to, front shovel is shown in FIG. 2 floats the structural system of pressure automatic regulating apparatus and be arranged on foregoing snow removing
A hydraulic control station 5 on vehicle car body 1, the hydraulic control station 5 be connected with foregoing 21 hydraulic circuit of lifting cylinder and with snow removing
The Vehicle Controller electrical control connection of vehicle.
Technical essential as technical solution provided by the invention：In aforementioned hydraulic control station 5 and foregoing lifting cylinder 21
The lifting cylinder operating pressure for being provided with to perceive the pressure of lifting cylinder 21 on the hydraulic circuit of hydraulic circuit connection perceives
Sensor 6, the lifting cylinder operating pressure detecting sensor 6 are electrically connected with foregoing Vehicle Controller.
As shown in Figure 1, the right side of one group of foregoing front shovel 4 is respectively by front shovel upper connecting rod 41 and front shovel lower link 42 with before
The left side for stating front shovel stent 3 is hinged, and a front shovel perching knife 43 is respectively fixed in the lower part of one group of front shovel 4.
As shown in Figure 2, foregoing lifting cylinder 21 has a upper cylinder half chamber 211 and an once cylinder chamber 212, upper and lower cylinder chamber 211,
212 are separated by the oil cylinder column piston 2131 of the oil cylinder column 213 of lifting cylinder 21, foregoing hydraulic control station 5 include fuel tank 51,
Oil pump 52, the first valve block 53, the second valve block 54, overflow valve 55a, pressure-biased valve 55b, the first reversal valve 55c, the second reversal valve
55d, solenoid valve 55e, electromagnetic relief valve 55f and throttle valve 55g, fuel tank 51 are arranged on foregoing snow sweeper car body 1, and oil pump 52 is matched somebody with somebody
It is located on fuel tank 51, the oil pump oil inlet of the oil pump 52 is communicated by pump inlet pipe 521 with fuel tank 51, and the oil pump of oil pump 52
Oil outlet is connected by oil pump outlet line 522 with the first reversal valve 55c, overflow valve 55a, pressure-biased valve 55b, the first reversal valve
55c and the second reversal valve 55d are arranged on the first valve block 53, the tank drainback pipe 511 of overflow valve 55a and fuel tank 51 and
Foregoing oil pump outlet line 522 communicates, pressure-biased valve 55b equally with 522 phase of tank drainback pipe 511 and oil pump outlet line
Logical, the first reversal valve 55c is communicated with oil pump outlet line 522 and communicated by the first pipeline 56a with solenoid valve 55e, and second changes
It is communicated to valve 55d by the second pipeline 56b with tank drainback pipe 511, and also passes through the 3rd pipeline 56c and foregoing lifting cylinder
21 upper cylinder half chamber 211 communicates, and solenoid valve 55e, electromagnetic relief valve 55f and throttle valve 55g are arranged on the second valve block 54, electromagnetism
Valve 55e is communicated by the 4th pipeline 56d with throttle valve 55g, and throttle valve 55g passes through the 5th pipeline 56e and lifting cylinder 21
Lower cylinder chamber 212 communicate, electromagnetic relief valve 55f is communicated with the 3rd foregoing pipeline 56c and electromagnetic relief valve 55f also passes through
6th pipeline 56f is communicated with foregoing tank drainback pipe 511, and the first foregoing valve block 53 and the second valve block 54 are arranged on fuel tank
51 top；Foregoing front shovel stent 3 is connected with foregoing oil cylinder column 213；Foregoing lifting cylinder operating pressure detecting sensor 6 is logical
Excess pressure detecting sensor oil pipe 61 is corresponding to the position between lifting cylinder 21 and electromagnetic relief valve 55f and the foregoing 3rd pipe
Road 56c connections.
Preferably, the position of the oil pump oil inlet corresponding to foregoing oil pump 52 is provided with oil filter 523.
As shown in Figure 2, the 3rd foregoing pipeline 56c is communicated with the upper cylinder half chamber 211 of foregoing lifting cylinder 21, and the foregoing the 5th
Pipeline 56e is communicated with the lower cylinder chamber 212 of foregoing lifting cylinder 21.
Applicant combines Fig. 1 and Fig. 2 and is illustrated so that one group of front shovel 4 declines as an example, with dash-dot arrows in figure
I.e. with dotted arrowIt represents oil return, oil inlet is represented with solid arrow " → ".When one group of front shovel 4 declines, by foregoing vehicle-mounted
The PLC (programmable controller) of controller, which sends instruction, makes the oil pump 52 at hydraulic control station 5 work, at this point, pressure-loaded is electric
Magnet valve 55b must be electrically turn off and (usually in opening state, and fluid be backed into fuel tank 51 by tank drainback pipe 511), and second
Reversal valve 55d is opened, and solenoid valve 55e and electromagnetic relief valve 55f are opened, and the pressure that electromagnetic relief valve 55f is set is 2MPa.
The high pressure oil for coming from oil pump 52 at this time enters the first reversal valve 55c through oil pump outlet line 522, then enters liter through the 3rd pipeline 56c
The upper cylinder half chamber 211 of the top of the oil cylinder column piston 2131 of oil cylinder 21 is dropped, promotes 213 downlink of oil cylinder column, the liquid of this cylinder chamber 212 at present
Pressure oil is successively through the 5th pipeline 56e, throttle valve 55g, the 4th pipeline 56d, solenoid valve 55e, the first pipeline 56a, the first reversal valve
55c, the second pipeline 56b and tank drainback pipe 511, into fuel tank 51.In aforementioned process, when the pressure oil that oil pump 52 exports
Pressure it is excessive when, i.e., more than 2MPa when, the electromagnetic relief valve 55f on oil circuit opens (overcome and opened under contained spring pressure),
Fluid backs into oil pipe 51 through the 6th pipeline 56f and tank drainback pipe 511 successively, make lifting cylinder 21 remain it is certain over the ground
Pressure forces aforementioned wheel 31 to generate certain ground pressure by lifting cylinder 21, active force is 7000N- over the ground for this
10000N.That is, the oil liquid pressure of the lower cylinder chamber 212 of lifting cylinder cavity of resorption, that is, lifting cylinder 2 remains at a 2MPa left sides
The right side, the ground pressure of one group of front shovel 4 increase to 7000-10000N, and one group of front shovel 4 is prevented (also may be used by thickness snow resistance in clear snow
Claim " pressure ") it generates and lifts situation and influence clear snow effect.
Refer to Fig. 3, and with reference to Fig. 1, illustrated so that one group of front shovel 4 rises as an example, the arrow connotation in Fig. 3 as
Description to Fig. 2.When one group of front shovel 4 rises, high pressure oil and oil return trend are as shown in figure 3, be specifically：By Vehicle Controller
PLC, which sends instruction, closes solenoid valve 55e, the second reversal valve 55d commutations, and the pressure oil that oil pump 52 pumps out is fuel-displaced through oil pump successively
Pipe 522, the second reversal valve 55d, the first pipeline 56a, solenoid valve 55e, the 4th pipeline 56d, throttle valve 55g and the 5th pipeline 56e,
Into the lower cylinder chamber 212 of lifting cylinder 21,213 uplink of oil cylinder column.Fluid in the upper cylinder half chamber 211 of lifting cylinder 21 passes through successively
3rd pipeline 56c, the second reversal valve 55d, the second pipeline 56b and tank drainback pipe 511 back into fuel tank.
211 oil inlet of upper cylinder half chamber of foregoing lifting cylinder 21 and lower 212 oil return of cylinder chamber or lower 212 oil inlet of cylinder chamber and upper cylinder half chamber
211 oil returns, i.e., the foregoing displacement downward or upward of oil cylinder column 213 is each depended on to be felt by lifting cylinder operating pressure detecting sensor 6
Know and signal is fed back into Vehicle Controller after the pressure of the 3rd pipeline 56c, Vehicle Controller comes from lifting cylinder in acquisition
Hydraulic control station 5 is just issued instructions to after the signal of operating pressure sensor 6.
In conclusion technical solution provided by the invention compensates for the shortcoming in prior art, invention has been favorably accomplished
Task has faithfully fulfilled the technique effect that applicant refers in technical effect column above.
Claims (6)
1. a kind of front shovel of snow sweeper floats pressure automatic regulating apparatus, the snow sweeper includes a bottom with snow sweeper car body (1)
The vehicle chassis bindiny mechanism (2) of the front connection of disk (11), lifting cylinder is provided in the vehicle chassis bindiny mechanism (2)
(21)；One front shovel stent (3), the front shovel stent (3) the position in the left side corresponding to the vehicle chassis bindiny mechanism (2) with
Lifting cylinder (21) connection, and it is each provided with wheel in the bottom at the both ends of the long side direction of the front shovel stent (3)
(31)；One group of front shovel (4), this group of front shovel (4) follow the left side of the long side direction of front shovel stent (3) with shape one by one
State is hinged on front shovel stent (3)；The front shovel, which floats pressure automatic regulating apparatus, to be included being arranged on the snow sweeper car body (1)
A hydraulic control station (5), the hydraulic control station (5) be connected with the lifting cylinder (21) hydraulic circuit and with snow sweeper
Vehicle Controller electrical control connects, it is characterised in that in the hydraulic control station (5) and the lifting cylinder (21) hydraulic oil
The lifting cylinder operating pressure for being provided with to perceive the pressure of lifting cylinder (21) on the hydraulic circuit of road connection perceives sensing
Device (6), the lifting cylinder operating pressure detecting sensor (6) are electrically connected with the Vehicle Controller.
2. the front shovel of snow sweeper according to claim 1 floats pressure automatic regulating apparatus, it is characterised in that before described one group
The right side of shovel (4) is respectively hinged by front shovel upper connecting rod (41) and front shovel lower link (42) and the left side of the front shovel stent (3).
3. the front shovel of snow sweeper according to claim 2 floats pressure automatic regulating apparatus, it is characterised in that at described one group
The lower part of front shovel (4) is respectively fixed with a front shovel perching knife (43).
4. the front shovel of snow sweeper according to claim 1 floats pressure automatic regulating apparatus, it is characterised in that the lifting oil
Cylinder (21) has a upper cylinder half chamber (211) and once cylinder chamber (212), and upper and lower cylinder chamber (211,212) is by the oil cylinder of lifting cylinder (21)
The oil cylinder column piston (2131) of column (213) separates, and the hydraulic control station (5) includes fuel tank (51), oil pump (52), the first valve
Block (53), the second valve block (54), overflow valve (55a), pressure-biased valve (55b), the first reversal valve (55c), the second reversal valve
(55d), solenoid valve (55e), electromagnetic relief valve (55f) and throttle valve (55g), fuel tank (51) are arranged on the snow sweeper car body
(1) on, oil pump (52) is disposed on fuel tank (51), and the oil pump oil inlet of the oil pump (52) is by pump inlet pipe (521) and fuel tank
(51) communicate, and the oil pump out of the mouth of oil pump (52) is connected by oil pump outlet line (522) with the first reversal valve (55c), overflow
Valve (55a), pressure-biased valve (55b), the first reversal valve (55c) and the second reversal valve (55d) are arranged on the first valve block (53)
On, overflow valve (55a) is communicated with the tank drainback pipe (511) and the oil pump outlet line (522) of fuel tank (51), and pressure adds
It carries valve (55b) equally to communicate with tank drainback pipe (511) and oil pump outlet line (522), the first reversal valve (55c) goes out with oil pump
Oil pipe (522) is communicated and communicated by the first pipeline (56a) with solenoid valve (55e), and the second reversal valve (55d) passes through the second pipe
Road (56b) is communicated with tank drainback pipe (511), and also passes through the 3rd pipeline (56c) and the upper cylinder half of the lifting cylinder (21)
Chamber (211) communicates, and solenoid valve (55e), electromagnetic relief valve (55f) and throttle valve (55g) are arranged on the second valve block (54), electricity
Magnet valve (55e) is communicated by the 4th pipeline (56d) with throttle valve (55g), and the throttle valve (55g) passes through the 5th pipeline (56e)
Communicated with the lower cylinder chamber (212) of lifting cylinder (21), electromagnetic relief valve (55f) communicated with the 3rd pipeline (56c) and
The electromagnetic relief valve (55f) is also communicated by the 6th pipeline (56f) with the tank drainback pipe (511), first valve
Block (53) and the second valve block (54) are arranged on the top of fuel tank (51)；The front shovel stent (3) connects with the oil cylinder column (213)
It connects；The lifting cylinder operating pressure detecting sensor (6) is by pressure detecting sensor oil pipe (61) corresponding to lifting
Position between oil cylinder (21) and electromagnetic relief valve (55f) is connected with the 3rd pipeline (56c).
5. the front shovel of snow sweeper according to claim 4 floats pressure automatic regulating apparatus, it is characterised in that corresponding to described
The position of the oil pump oil inlet of oil pump (52) is provided with oil filter (523).
6. the front shovel of snow sweeper according to claim 4 floats pressure automatic regulating apparatus, it is characterised in that the 3rd pipe
Road (56c) is communicated with the upper cylinder half chamber (211) of the lifting cylinder (21), the 5th pipeline (56e) and the lifting cylinder
(21) lower cylinder chamber (212) communicates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721416385.5U CN207419362U (en) | 2017-10-30 | 2017-10-30 | The front shovel of snow sweeper floats pressure automatic regulating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721416385.5U CN207419362U (en) | 2017-10-30 | 2017-10-30 | The front shovel of snow sweeper floats pressure automatic regulating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207419362U true CN207419362U (en) | 2018-05-29 |
Family
ID=62310223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721416385.5U Withdrawn - After Issue CN207419362U (en) | 2017-10-30 | 2017-10-30 | The front shovel of snow sweeper floats pressure automatic regulating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207419362U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604872A (en) * | 2017-10-30 | 2018-01-19 | 常熟华东汽车有限公司 | The floating pressure automatic regulating apparatus of the front shovel of snow sweeper |
-
2017
- 2017-10-30 CN CN201721416385.5U patent/CN207419362U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107604872A (en) * | 2017-10-30 | 2018-01-19 | 常熟华东汽车有限公司 | The floating pressure automatic regulating apparatus of the front shovel of snow sweeper |
| CN107604872B (en) * | 2017-10-30 | 2023-12-08 | 常熟华东汽车有限公司 | Front shovel floating pressure automatic adjusting device of snow remover |
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