CN206857944U - A kind of energy-saving hydraulic staircase - Google Patents
A kind of energy-saving hydraulic staircase Download PDFInfo
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- CN206857944U CN206857944U CN201720791031.2U CN201720791031U CN206857944U CN 206857944 U CN206857944 U CN 206857944U CN 201720791031 U CN201720791031 U CN 201720791031U CN 206857944 U CN206857944 U CN 206857944U
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- variable displacement
- displacement motor
- hydraulic
- energy
- staircase
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Abstract
The utility model discloses a kind of energy-saving hydraulic staircase, including controller, down escalator, up staircase while first variable displacement motor and the second variable displacement motor, reversal valve with pump and motor operating conditions, and latter three forms hydraulic circuit；The output shaft of first variable displacement motor is connected with the power transmission shaft of down escalator, and the output shaft of the second variable displacement motor is connected with the power transmission shaft of up staircase；When the downstream rate of down escalator is more than predetermined threshold value, reversal valve is in the first station, and its oil inlet connects with the pump condition hydraulic fluid port of the first variable displacement motor, and oil return opening connects with its motor operating conditions hydraulic fluid port；When the downstream rate of down escalator is less than predetermined threshold value, reversal valve is in second station, and oil inlet connects with the motor operating conditions hydraulic fluid port of the first variable displacement motor, and oil return opening connects with its pump condition hydraulic fluid port.The gravitional force of down escalator is converted to pressure energy by the utility model, and for driving up staircase to operate, energy conversion link is brief, efficiency high, occupies little space, and cost is cheap.
Description
Technical field
Elevator technology field is the utility model is related to, more particularly to a kind of energy-saving hydraulic staircase.
Background technology
With expanding economy, escalator makes in the public place such as market, hotel, station, airport, subway, hospital
Dosage is continuously increased.In these application scenarios, escalator is continuously operated in more than 12 hours for substantially one day.AT STATION,
In the public transit facilities such as airport, escalator is even more to run all through the night.One group of common escalator, power are generally
8kW every, if daily working 12 hours, the power consumption of 1 year is up to 70,000 kilowatts.Therefore, to the energy-conservation of escalator
Control technology is studied significant to energy-saving and emission-reduction.
Escalator is segmented into two working conditions of uplink and downlink, and up consumption electric energy overcomes the friction inside staircase
Power is done work, descending to consume gravitional force by brake apparatus.If can reclaim staircase it is descending when the gravitional force that loads, can
To substantially reduce the power consumption of staircase.The method of currently used recovery staircase down load gravitional force has two schemes.Wherein
A kind of scheme is to utilize mechanical device, allows down escalator to go to drive up staircase.For example, up escalator is by up driving machine
Structure is driven and run, and descending escalator is driven and run by downlink drive mechanism, the up driving gear of up drive mechanism
Directly or indirectly engaged with the descending driving gear of downlink drive mechanism, and rotation direction is on the contrary, in this way, can be in particular case
Under up escalator operation driven by descending escalator.This solution principle is simple, i.e., by the gravity of descending escalator
Potential energy is mechanical energy and is directly passed to up escalator, drives up staircase to run.Second scheme is to utilize electricity
The load gravitional force of down escalator is converted to electric energy by device device.For example, when descending, in the presence of gravitional force is loaded,
The motor of down escalator is in regenerative braking state, and motor can be carried equivalent to generator, caused electric energy by related device
Supply up motor or feed back to power network.
The power save mode of current energy-saving escalator is to reach simple by improving the mechanical structure of escalator mostly
The effect of energy-conservation.But the space of staircase arrangement is often very compact, Design of Mechanical Structure is more complicated to be difficult to, and is pacified
Dress difficulty is larger, in addition, the scheme to be generated electricity by electrical installation, equipment cost is too high, and exists to power network and impact,
Using recovery electric energy when, be converted to mechanical energy again again, after energy multiple conversions, energy loss is higher.
Therefore, the energy-conservation of staircase is realized how convenient and simplely, while avoids taking additional space, is reduced cost, is carried
High-energy recovery utilization rate, it is those skilled in the art's technical problem urgently to be resolved hurrily.
Utility model content
The purpose of this utility model is to provide a kind of energy-saving hydraulic staircase, can realize the section of staircase convenient and simplely
Can, while avoid taking additional space, cost is reduced, improves energy regenerating utilization rate.
In order to solve the above technical problems, the utility model provides a kind of energy-saving hydraulic staircase, including it is down escalator, up
Staircase while there is the first variable displacement motor and the second variable displacement motor of pump and motor operating conditions, reversal valve and controller, and described
One variable displacement motor, the second variable displacement motor and reversal valve form hydraulic circuit；
The output shaft of first variable displacement motor is connected with the power transmission shaft of the down escalator, second variable displacement motor
Output shaft is connected with the power transmission shaft of the up staircase；
When the downstream rate of the down escalator is more than predetermined threshold value, the controller makes the reversal valve be in first
Station, and its oil inlet connects with the pump condition hydraulic fluid port of first variable displacement motor, its oil return opening and first variable displacement motor
Motor operating conditions hydraulic fluid port connection；
When the downstream rate of the down escalator is less than predetermined threshold value, the controller makes the reversal valve be in second
Station, and its oil inlet connects with the motor operating conditions hydraulic fluid port of first variable displacement motor, its oil return opening and the first variable horse
The pump condition hydraulic fluid port connection reached.
Preferably, in addition to the oil inlet of the reversal valve connect, for being in pump work in first variable displacement motor
The accumulator for storing its hydraulic energy during condition.
Preferably, in addition to the signal input part of the controller it is connected, for detecting first variable displacement motor
The speed probe of rotating speed is exported, and when the detected value of the speed probe is less than rotating speed it is expected, the controller control
The discharge capacity for making first variable displacement motor reduces；When the detected value of the speed probe is higher than rotating speed it is expected, the control
Device controls the discharge capacity increase of first variable displacement motor.
Preferably, in addition to the oil inlet of the reversal valve connect, enter first variable displacement motor for adjusting
Or the choke valve of the hydraulic fluid flow rate flowed out from the pump condition hydraulic fluid port of first variable displacement motor.
Preferably, the reversal valve is specially three-position four-way electromagnetic directional valve.
Preferably, in addition to the oil inlet of the choke valve connect, the pressure for detecting the pressure in hydraulic circuit
Sensor, and the main pump for supply pressure oil, the pressure sensor are connected with the signal input part of the controller, with
The controller is set to control the rotating speed of the servomotor for driving the main pump operating.
Preferably, in addition to the oil-out of the main pump connect, for making first variable displacement motor or the second variable
The liquid braking device of motor braking.
Preferably, in addition to the oil inlet of the liquid braking device connect, for controlling it fuel-displaced with the main pump
The switch valve of mouth break-make.
Preferably, in addition to it is communicated between the liquid braking device and switch valve, for adjusting the liquid braking device
Braking time brake throttle.
Preferably, the choke valve and/or the brake throttle are electro-hydraulic proportional throttle valve.
Energy-saving hydraulic staircase provided by the utility model, mainly including down escalator, up staircase, the first variable horse
Reach, the second variable displacement motor, reversal valve and controller.Wherein, the first variable displacement motor, the second variable displacement motor and reversal valve form hydraulic pressure
Loop.The output shaft of first variable displacement motor is connected with the power transmission shaft of down escalator, and the output shaft of the second variable displacement motor is helped with up
The power transmission shaft of ladder is connected.Importantly, the first variable displacement motor and the second variable displacement motor are provided simultaneously with the function of pump and motor, when
When the two is in pump condition, pump condition hydraulic fluid port output high-pressure is oily, and the low pressure oil of fuel tank output is oily from its motor operating conditions
Mouth enters；When the two is in motor operating conditions, high-pressure oil enters motor operating conditions hydraulic fluid port, while pump condition hydraulic fluid port output low pressure
Pressure oil is to fuel tank.Control is selected for the operating mode of the first variable displacement motor (or second variable displacement motor), is completed by reversal valve.When
When the downstream rate of down escalator is more than predetermined threshold value, now the pedestrian on down escalator is more, and gravitional force is larger, descending to help
For ladder when down operating, the gravitional force of pedestrian is partially converted into the kinetic energy to down escalator, and drives the first variable displacement motor
Output shaft reversely rotates, and now the first variable displacement motor is in pump condition, externally exports energy, meanwhile, reversal valve is in the first work
Position, and the oil inlet of reversal valve connects with the pump condition hydraulic fluid port of the first variable displacement motor, the horse of oil return opening and the first variable displacement motor
Connected up to operating mode hydraulic fluid port, so so that currently returned as the first variable displacement motor pressure oil output that pump uses by reversal valve
Hydraulic main circuit or fuel tank, the up staircase of power drive as main pump are operated.And when the downstream rate of down escalator is small
When threshold value is set, pedestrian's negligible amounts on down escalator, gravitional force is relatively low, can not drive the output shaft of the first variable displacement motor
Reversion, now reversal valve is switched to second station, and the oil inlet of reversal valve connects with the motor operating conditions hydraulic fluid port of the first variable displacement motor,
Its oil return opening connects with the pump condition hydraulic fluid port of the first variable displacement motor, and such first variable displacement motor is in motor operating conditions, is come by main pump
Hydraulic oil driving, drive down escalator operating.Therefore, energy-saving hydraulic staircase provided by the utility model, is helped when descending
When the load of ladder is larger, the output shaft for driving the first variable displacement motor by the gravitional force of the pedestrian on down escalator inverts, and makes the
One variable displacement motor is in pump condition, and pressure oil output auxiliary main pump drives up staircase to be operated, equivalent to by down escalator
Gravitional force be converted to pressure energy, for driving up staircase to operate, while also ensure the normal operation of itself, compared to existing
There is technology, energy conversion link is brief, high conversion efficiency, and need not install extra mechanical device, is not take up exceptional space,
Therefore the energy-conservation of staircase can be realized convenient and simplely, reduces cost, improve energy regenerating utilization rate.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the required accompanying drawing used is briefly described in description of the prior art, it should be apparent that, drawings in the following description are only
It is embodiment of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, also
Other accompanying drawings can be obtained according to the accompanying drawing of offer.
Fig. 1 is a kind of hydraulic structure schematic diagram of embodiment provided by the utility model.
Wherein, in Fig. 1：
Down escalator -1, up staircase -2, the first variable displacement motor -3, the second variable displacement motor -4, reversal valve -5, store
Energy device -6, speed probe -7, choke valve -8, pressure sensor -9, main pump -10, servomotor -11, hydraulic braking
Device -12, switch valve -13, brake throttle -14.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the embodiment of the utility model is carried out
Clearly and completely describing, it is clear that described embodiment is only the utility model part of the embodiment, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belong to the scope of the utility model protection.
Fig. 1 is refer to, Fig. 1 is a kind of hydraulic structure schematic diagram of embodiment provided by the utility model
In a kind of embodiment provided by the utility model, energy-saving hydraulic staircase mainly includes down escalator
1st, up staircase 2, the first variable displacement motor 3, the second variable displacement motor 4, reversal valve 5 and controller.Certainly, each hydraulic system is gone back
Servomotor 11 rotated including fuel tank, overflow valve, main pump 10 and driving main pump 10 etc..
Wherein, the first variable displacement motor 3, the second variable displacement motor 4 and reversal valve 5 form hydraulic circuit.First variable displacement motor 3
Output shaft is connected with the power transmission shaft of down escalator 1, and the output shaft of the second variable displacement motor 4 is connected with the power transmission shaft of up staircase 2.This
Place is preferably due to which the locus of down escalator 1 and up staircase 2 is mutually staggered, and both are only mutually in hydraulic system
It is vertical, therefore the first variable displacement motor 3 and the second variable displacement motor 4 can form parallel form, i.e. going out from main pump 10 in hydraulic circuit
The hydraulic oil of hydraulic fluid port outflow, it is divided to two strands to separately flow into the first variable displacement motor 3 and the second variable displacement motor 4, both progress of independent driving
Operating, is independent of each other.
Importantly, the first variable displacement motor 3 and the second variable displacement motor 4 have pump and motor operating conditions simultaneously, i.e., " pump motor ",
Under given conditions, the first variable displacement motor 3 and the second variable displacement motor 4 may be at pump condition, under another specified conditions, the
One variable displacement motor 3 and the second variable displacement motor 4 may be at motor operating conditions.Specifically, in the first variable displacement motor 3 and the second variable horse
Two hydraulic fluid ports, respectively pump condition hydraulic fluid port and motor operating conditions hydraulic fluid port (i.e. A hydraulic fluid ports and B hydraulic fluid ports) are provided with simultaneously on up to 4, when the two
During in pump condition, pump condition hydraulic fluid port output high-pressure oil, the low pressure oil of fuel tank output enters from its motor operating conditions hydraulic fluid port
Enter；When the two is in motor operating conditions, high-pressure oil enters motor operating conditions hydraulic fluid port, while pump condition hydraulic fluid port output low pressure
Oil is to fuel tank.
Control is selected for the operating mode of the first variable displacement motor 3 (or second variable displacement motor 4), reversal valve 5 is controlled by controller
Current station complete.Specifically, when the downstream rate of down escalator 1 is more than predetermined threshold value, now on down escalator 1
Pedestrian is more, and gravitional force is larger, and when down operating, the gravitional force of pedestrian is partially converted into be helped descending down escalator 1
The kinetic energy of ladder 1, and drive the output shaft of the first variable displacement motor 3 to reversely rotate, now the first variable displacement motor 3 is in pump condition, right
Outer output energy, meanwhile, controller control reversal valve 5 is in the first station, and the oil inlet of reversal valve 5 and the first variable horse
Pump condition hydraulic fluid port up to 3 connects, and oil return opening connects with the motor operating conditions hydraulic fluid port of the first variable displacement motor 3, so so that current conduct
The pressure oil output of the first variable displacement motor 3 that pump uses is dynamic as main pump 10 by the hydraulic return major loop of reversal valve 5 or fuel tank
Power drives up staircase 2 to be operated.And when the downstream rate of down escalator 1 is less than and sets threshold value, the pedestrian on down escalator 1
Negligible amounts, gravitional force is relatively low, and the output shaft of the first variable displacement motor 3 can not be driven to invert, now controller control reversal valve 5
In second station, and the oil inlet of reversal valve 5 connects with the motor operating conditions hydraulic fluid port of the first variable displacement motor 3, its oil return opening with
The pump condition hydraulic fluid port connection of first variable displacement motor 3, such first variable displacement motor 3 is in motor operating conditions, by the hydraulic pressure of main pump 10
Oil driving, drives down escalator 1 to operate.
Therefore, the energy-saving hydraulic staircase that the present embodiment is provided, when the downstream rate of down escalator 1 is larger, under
The gravitional force of pedestrian on row staircase 1 drives the output shaft reversion of the first variable displacement motor 3, the first variable displacement motor 3 is in pump
Operating mode, pressure oil output auxiliary main pump 10 drive up staircase 2 to be operated, turned equivalent to by the gravitional force of down escalator 1
Pressure energy is changed to, for driving up staircase 2 to operate, while also ensures the normal operation of itself, compared to prior art, energy
Conversion links are brief, high conversion efficiency, and need not install extra mechanical device, are not take up exceptional space, therefore can be square
Just the energy-conservation of staircase is simply realized, reduces cost, improves energy regenerating utilization rate.
It should be noted that up staircase 2 and down escalator 1 can exchange, i.e., up staircase 2 is also used as down
Row staircase 1, and down escalator 1 is also used as up staircase 2, both directions are that reverse tune can be made according to actual conditions
Whole.Accordingly, the first variable displacement motor 3 and the second variable displacement motor 4 can also exchange, and above-mentioned reversal valve 5 is for the first variable horse
Operating mode up to 3 selects control, can equally be adapted on the second variable displacement motor 4, and specific action principle and the first variable horse
Identical up to 3, here is omitted.Following examples are in " descending " state with down escalator 1, and up staircase 2 be in " on
OK " it is described exemplified by state.
In a kind of preferred embodiment on reversal valve 5, the reversal valve 5 concretely three position four-way directional control valve 5, and
And can also be solenoid directional control valve 5 for the ease of host computer control.Certainly, the concrete structure of reversal valve 5, which is carried out, is not limited in three
Four-way electromagnetic reversing valve 5, such as two grades of four-way pilot operated directional control valve 5 can equally use for remaining.
Furthermore, it is contemplated that when the first variable displacement motor 3 is in pump condition, the first variable displacement motor 3 is drawn oily and right from fuel tank
Outer pressure oil output, this strand of pressure oil flow back into major loop after the outflow of its pump condition hydraulic fluid port by the oil inlet of reversal valve 5
In, to avoid causing flow-reversing impingement to main pump 10, check valve can be set in the exit of main pump 10.Similarly, can also be in major loop
It is upper that the accumulator 6 that is connected with the oil inlet of reversal valve 5 is set, when being easy to the first variable displacement motor 3 to be in pump condition, output it
Partial pressure oil is stored (another part directly drives up staircase 2 and operated).
Further, it is contemplated that escalator keeps stable, evenly operated, it is necessary to try one's best in the running, avoids to row
It is artificial into the dangerous situation such as rocking, pin is on the other hand, be additionally arranged the output rotating speed for detecting the first variable displacement motor 3 in the present embodiment
Speed probe 7.The speed probe 7 is connected with the signal input part of controller, when the detected value of speed probe 7 is less than
When it is expected rotating speed, illustrate that the pedestrian on down escalator 1 is less, load is relatively low, and gravitional force is smaller, the lower scanning frequency of down escalator 1
Degree is slower, and now controller controls the discharge capacity of the first variable displacement motor 3, it is suitably reduced, so that the rotating speed of its output shaft is appropriate
Increase.Certainly, if the discharge capacity of the first variable displacement motor 3 it is adjusted to it is minimum when, the downstream rate of down escalator 1 still is below the phase
Hope rotating speed, then illustrate that down load is too small, be not enough to drive the first variable displacement motor 3 to go to recover energy, at this moment can only just cut
The station of reversal valve 5 is changed, the first variable displacement motor 3 is worked in motor operating conditions.When the detected value of speed probe 7 turns higher than expectation
When fast, illustrating that the pedestrian on down escalator 1 is more, load is higher, and gravitional force is larger, and the downstream rate of down escalator 1 is very fast,
Now controller controls the discharge capacity of the first variable displacement motor 3, it is suitably increased, so that the rotating speed after its output suitably reduces.Such as
This, output shaft Rotating speed measring and feedback by speed probe 7 to the first variable displacement motor 3, can make controller control is descending to help
The real-world operation speed of ladder 1, it is kept to stablize, at the uniform velocity.
Further, the present embodiment is also additionally arranged choke valve 8 in hydraulic circuit.Specifically, the choke valve 8 can be with changing
Connected to the oil inlet of valve 5, be mainly used in the pressure oil flow that regulation is entered in the first variable displacement motor 3, be back to control
The uninterrupted of pressure oil in hydraulic main circuit；Or the pressure that regulation is flowed out from the pump condition hydraulic fluid port of the first variable displacement motor 3
Oil stream amount, to control the pressure oil at main pump 10 to enter the uninterrupted of the first variable displacement motor 3；And then control the first variable horse
Up to 3 speed of service.Herein preferably, the choke valve 8 concretely electro-hydraulic proportional throttle valve.Certainly, the choke valve 8 can also be
The choke valve of remaining type.
Moreover, the present embodiment is also additionally arranged pressure sensor 9 in hydraulic circuit.The pressure sensor 9 can be with section
The oil inlet for flowing valve 8 connects, or the oil-out directly with main pump 10 connects, mainly for detection of the pressure in hydraulic main circuit
Size.And the pressure sensor 9 is connected with the signal input part of controller, and the pressure value that can be detected is sent to control
Device, and controller can control servomotor 11 according to plug-in accordingly after the detection signal of pressure sensor 9 is received
Rotating speed.The servomotor 11 is mainly used in driving main pump 10 to move, in this way, can be real by the detection signal of pressure sensor 9
When control hydraulic main circuit in pressure size.
In another embodiment that the present embodiment is provided, it is contemplated that escalator needs under some operating modes
Brake, liquid braking device 12 is additionally arranged in the present embodiment.Specifically, the liquid braking device 12 can set two simultaneously, wherein one
Individual to coordinate with the output shaft of the first variable displacement motor 3, the output shaft of another and the second variable displacement motor 4 coordinates, and this two
Oil-out of the liquid braking device 12 with main pump 10 connects, when the pressure oil being mainly used in main pump 10 drives its operating, by
The output axis clamping of one variable displacement motor 3 or the second variable displacement motor 4, braking, such as hydraulic chuck etc..
Meanwhile the present embodiment is also additionally arranged the switch valve connected with the oil inlet of liquid braking device 12 in hydraulic circuit
13.Specifically, the switch valve 13 can be 2/2-way reversal valve 5, the hydraulic oil and hydraulic pressure system for being mainly used in controlling at main pump 10
The break-make of the oil inlet of dynamic device 12.Such as when switch valve 13 is in the first station, the oil-out and liquid braking device of main pump 10
12 oil inlet connects, now output shaft system of the liquid braking device 12 to the first variable displacement motor 3 or the second variable displacement motor 4
It is dynamic, conversely, then loosening to the output shaft of the two.
Further, in order to more precisely control liquid braking device 12 to the first variable displacement motor 3 or the second variable displacement motor 4
Output shaft braking time, the present embodiment is also additionally arranged brake throttle 14 between liquid braking device 12 and switch valve 13.
The brake throttle 14 equally can be electro-hydraulic proportional throttle valve, can by adjusting the uninterrupted of the pressure oil by its hydraulic fluid port
Relatively accurately to control the working condition of liquid braking device 12.
The foregoing description of the disclosed embodiments, professional and technical personnel in the field are enable to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can be realized in other embodiments in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (10)
- A kind of 1. energy-saving hydraulic staircase, it is characterised in that including down escalator (1), up staircase (2) at the same have pump and The first variable displacement motor (3) and the second variable displacement motor (4), the reversal valve (5) and controller of motor operating conditions, and the first variable horse Hydraulic circuit is formed up to (3), the second variable displacement motor (4) and reversal valve (5)；The output shaft of first variable displacement motor (3) is connected with the power transmission shaft of the down escalator (1), second variable displacement motor (4) output shaft is connected with the power transmission shaft of the up staircase (2)；When the downstream rate of the down escalator (1) is more than predetermined threshold value, the controller makes the reversal valve (5) be in the One station, and its oil inlet connects with the pump condition hydraulic fluid port of first variable displacement motor (3), its oil return opening and first variable The motor operating conditions hydraulic fluid port connection of motor (3)；When the downstream rate of the down escalator (1) is less than predetermined threshold value, the controller makes the reversal valve (5) be in the Two stations, and its oil inlet connects with the motor operating conditions hydraulic fluid port of first variable displacement motor (3), its oil return opening becomes with described first Measure the pump condition hydraulic fluid port connection of motor (3).
- 2. energy-saving hydraulic staircase according to claim 1, it is characterised in that also include entering with the reversal valve (5) Hydraulic fluid port connection, the accumulator (6) for storing its hydraulic energy when first variable displacement motor (3) is in pump condition.
- 3. energy-saving hydraulic staircase according to claim 2, it is characterised in that also include defeated with the signal of the controller Enter end connection, the speed probe (7) of output rotating speed for detecting first variable displacement motor (3), and work as the rotating speed When the detected value of sensor (7) is less than rotating speed it is expected, the controller controls the discharge capacity of first variable displacement motor (3) to reduce； When the detected value of the speed probe (7) is higher than rotating speed it is expected, the controller controls first variable displacement motor (3) Discharge capacity increases.
- 4. energy-saving hydraulic staircase according to claim 3, it is characterised in that also include entering with the reversal valve (5) Hydraulic fluid port connects, enters first variable displacement motor (3) or the pump condition hydraulic fluid port from first variable displacement motor (3) for adjusting The choke valve (8) of the hydraulic fluid flow rate of outflow.
- 5. energy-saving hydraulic staircase according to claim 4, it is characterised in that the reversal valve (5) is specially three four Electric change valve.
- 6. energy-saving hydraulic staircase according to claim 4, it is characterised in that also include entering with the choke valve (8) Hydraulic fluid port connection, the pressure sensor (9) for detecting the pressure in hydraulic circuit, and the main pump for supply pressure oil (10), the pressure sensor (9) is connected with the signal input part of the controller, so that the controller is controlled for driving The rotating speed of the servomotor (11) of main pump (10) operating.
- 7. energy-saving hydraulic staircase according to claim 6, it is characterised in that also include fuel-displaced with the main pump (10) Mouth connection, the liquid braking device (12) for making first variable displacement motor (3) or the second variable displacement motor (4) braking.
- 8. energy-saving hydraulic staircase according to claim 7, it is characterised in that also include and the liquid braking device (12) Oil inlet connection, for controlling its switch valve (13) with the oil-out break-make of the main pump (10).
- 9. energy-saving hydraulic staircase according to claim 8, it is characterised in that also include being communicated in the liquid braking device (12) brake throttle (14) of the braking time between switch valve (13), for adjusting the liquid braking device (12).
- 10. energy-saving hydraulic staircase according to claim 9, it is characterised in that the choke valve (8) and/or the system Dynamic choke valve (14) is electro-hydraulic proportional throttle valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720791031.2U CN206857944U (en) | 2017-06-29 | 2017-06-29 | A kind of energy-saving hydraulic staircase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720791031.2U CN206857944U (en) | 2017-06-29 | 2017-06-29 | A kind of energy-saving hydraulic staircase |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206857944U true CN206857944U (en) | 2018-01-09 |
Family
ID=60829723
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720791031.2U Expired - Fee Related CN206857944U (en) | 2017-06-29 | 2017-06-29 | A kind of energy-saving hydraulic staircase |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206857944U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140514A (en) * | 2017-06-29 | 2017-09-08 | 广东工业大学 | A kind of energy-saving hydraulic staircase |
| CN109626179A (en) * | 2019-02-12 | 2019-04-16 | 潘林玥 | A kind of energy-saving hydraulic elevator with balance weight |
-
2017
- 2017-06-29 CN CN201720791031.2U patent/CN206857944U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107140514A (en) * | 2017-06-29 | 2017-09-08 | 广东工业大学 | A kind of energy-saving hydraulic staircase |
| CN109626179A (en) * | 2019-02-12 | 2019-04-16 | 潘林玥 | A kind of energy-saving hydraulic elevator with balance weight |
| CN109626179B (en) * | 2019-02-12 | 2023-12-26 | 潘林玥 | Energy-saving hydraulic lifter with balancing weight |
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