CN111173798A - Hydraulic power system for variable counterweight and lifting system with hydraulic power system - Google Patents

Hydraulic power system for variable counterweight and lifting system with hydraulic power system Download PDF

Info

Publication number
CN111173798A
CN111173798A CN202010081683.3A CN202010081683A CN111173798A CN 111173798 A CN111173798 A CN 111173798A CN 202010081683 A CN202010081683 A CN 202010081683A CN 111173798 A CN111173798 A CN 111173798A
Authority
CN
China
Prior art keywords
hydraulic
storage device
liquid storage
hydraulic motor
power system
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010081683.3A
Other languages
Chinese (zh)
Inventor
杜杰
肖鸿雁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to CN202010081683.3A priority Critical patent/CN111173798A/en
Publication of CN111173798A publication Critical patent/CN111173798A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
    • F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
    • F15B13/00—Details of servomotor systems ; Valves for servomotor systems
    • F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B66—HOISTING; LIFTING; HAULING
    • B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
    • B66B11/00—Main component parts of lifts in, or associated with, buildings or other structures
    • B66B11/04—Driving gear ; Details thereof, e.g. seals
    • B66B11/0423—Driving gear ; Details thereof, e.g. seals actuated pneumatically or hydraulically
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
    • F16F2230/00—Purpose; Design features
    • F16F2230/06—Fluid filling or discharging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B50/00—Energy efficient technologies in elevators, escalators and moving walkways, e.g. energy saving or recuperation technologies

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fluid Mechanics (AREA)
  • Elevator Control (AREA)

Abstract

The invention discloses a hydraulic power system for a variable counterweight and a lifting system with the same, wherein the hydraulic power system comprises a transmission speed change mechanism in transmission connection with a driving wheel, a hydraulic motor group, a first liquid storage device and a second liquid storage device; the hydraulic motor group comprises at least one hydraulic motor, and a height difference is formed between the first liquid storage device and the second liquid storage device; the first liquid storage device is communicated with a first interface of the hydraulic motor group through a first pipeline, and the second liquid storage device is communicated with a second interface of the hydraulic motor group through a second pipeline; the device also comprises a reversing component which is provided with at least two working positions and is configured to: and the first interface is a liquid inlet, the second interface is a liquid outlet so as to enable the hydraulic motor group to work in a motor mode, and the first interface is a liquid outlet and the second interface is a liquid inlet so as to enable the hydraulic motor group to work in a pump mode. The hydraulic power system is used for balancing the gravity imbalance caused by load change and reducing the power loss of the traction machine.

Description

Hydraulic power system for variable counterweight and lifting system with hydraulic power system
Technical Field
The invention relates to the technical field of lifting machinery, in particular to a hydraulic power system for a variable counterweight and a lifting system with the hydraulic power system.
Background
The present elevator system is usually provided with a fixed counterweight for balancing load or traction power, and some elevator systems, such as escalators, are not provided with a counterweight and can also be understood as a counterweight fixed, namely zero.
In practical application, because the load of an elevator system is changed and the load and a fixed counterweight are often unbalanced, the traction machine needs to provide not only traction power but also balance force for the load and the counterweight, so that the energy conservation of the elevator is not facilitated, and the requirement on the traction machine is high.
Similar problems exist for other hoisting systems, such as hoists and the like, in addition to the elevator system described above.
Therefore, how to design a hydraulic power system can solve the problem of power loss caused by mismatching of the load and the counterweight of the lifting system and ensure the stable operation of the lifting system is a technical problem to be solved by the technical personnel in the field.
Disclosure of Invention
The invention aims to provide a hydraulic power system for a variable counterweight and a lifting system with the hydraulic power system, wherein the hydraulic power system can balance the gravity imbalance of a lifting kinematic pair of the lifting system, reduce the power and electric energy requirements on a power source and ensure the stable operation of the lifting system.
In order to solve the technical problem, the invention provides a hydraulic power system for a variable counterweight, which comprises a transmission speed change mechanism, a hydraulic motor set, a first liquid storage device and a second liquid storage device, wherein the transmission speed change mechanism is in transmission connection with a driving wheel of a lifting system;
the hydraulic motor group comprises at least one hydraulic motor, the first liquid storage device is positioned above the second liquid storage device, and a set height difference is formed between the first liquid storage device and the second liquid storage device;
the first liquid storage device is communicated with a first interface of the hydraulic motor group through a first pipeline, and the second liquid storage device is communicated with a second interface of the hydraulic motor group through a second pipeline;
the reversing component is provided with at least two working positions and is configured to: and the hydraulic motor group works in a motor mode and is positioned at a second working position, the first interface is a liquid outlet, and the second interface is a liquid inlet so as to ensure that the hydraulic motor group works in a pump mode.
The hydraulic power system provided by the invention is provided with a hydraulic motor group, a first liquid storage device and a second liquid storage device which are positioned at different heights, the first liquid storage device and the second liquid storage device are connected through related pipelines, and a reversing component is arranged to enable the hydraulic motor group to be switched between a motor working mode and a pump working mode, wherein the hydraulic motor group is in transmission connection with a traction sheave of the lifting system through a transmission speed change mechanism, and the hydraulic motor group has two working modes of a motor and a pump, the hydraulic motor group can provide power torque or resistance torque to the traction sheave, so that in practical applications, the hydraulic motor set may be controlled to provide motive or resistive torque in response to changes in load during operation of the lift system, the gravity imbalance of the lifting kinematic pair caused by load change is balanced, the power and electric energy requirements of the traction machine are reduced, and the running stability of the lifting system is ensured. In addition, the installation height difference of the first liquid storage device and the second liquid storage device can be selected according to actual conditions, and the application is convenient.
In the hydraulic power system, the first liquid storage device and the second liquid storage device each include more than one liquid storage tank.
According to the hydraulic power system, the hydraulic motor group comprises more than two hydraulic motors, and the hydraulic motors are arranged in parallel;
the first pipeline comprises first branch pipelines with the same number as the hydraulic motors, and the hydraulic motors are communicated with the first liquid storage device through the first branch pipelines;
the second pipeline comprises second branch pipelines with the same number as the hydraulic motors, and the hydraulic motors are communicated with the second liquid storage device through the second branch pipelines;
the reversing component comprises reversing valve groups with the same number as the hydraulic motors, and each reversing valve group is arranged on a connecting pipeline of each hydraulic motor and used for switching the working modes corresponding to the hydraulic motors.
In the hydraulic power system, the reversing component further has a third working position, and the first pipeline and the second pipeline are both in a non-conducting state in the third working position.
The hydraulic power system further comprises a controller, wherein the controller is used for switching the working position of the reversing component according to the running information of the lifting system, so that the hydraulic motor group forms a balance torque to balance the gravity imbalance of the lifting kinematic pair.
The hydraulic power system as described above, wherein the operation information of the lifting system includes a load operation direction of the lifting system and a difference between the load and a fixed counterweight of the lifting system.
The invention also provides a lifting system, which comprises a driving wheel and a power system, wherein the power system comprises a power source for driving the driving wheel to rotate, and the power system also comprises any one of the hydraulic power systems.
Since the hydraulic power system has the technical effects, the lifting system comprising the hydraulic power system also has the same technical effects, and the discussion is not repeated here.
The lifting system is characterized in that the power source and the hydraulic motor set are in transmission connection with the same transmission speed change mechanism; or the power system further comprises a speed changing device, and the power source is in transmission connection with the driving wheel through the speed changing device.
The lifting system further comprises a driving rope wound by the driving wheel, and two ends of the driving rope are respectively connected with a load and a fixed counterweight.
The lifting system is specifically an elevator system, the power source is a traction motor, and the driving wheel is a traction sheave.
Drawings
Fig. 1 is a schematic structural view of an embodiment of a hydraulic power system for a variable counterweight of a lifting system provided in the present invention;
FIG. 2 is a schematic illustration of the operating principles of the lift system in an exemplary embodiment;
FIG. 3 is a simplified structural diagram of a first embodiment of a lift system provided in accordance with the present invention;
FIG. 4 is a simplified structural diagram of a second embodiment of a lift system provided in accordance with the present invention;
fig. 5 is a schematic structural diagram of a third embodiment of the elevator system provided in the present invention.
Description of reference numerals:
the hydraulic power system 10, the hydraulic motor group 101, the hydraulic motor 111, the first liquid storage device 102, the second liquid storage device 103, the first pipeline 104, the first branch pipeline 141, the second pipeline 105, the second branch pipeline 151 and the reversing valve 106;
the power source 20, the transmission speed change mechanism 31 and the speed change device 32;
a drive wheel 41, a drive rope 42, a load 43, and a fixed counterweight 44.
Detailed Description
The core of the invention is to provide a hydraulic power system for a variable counterweight and a lifting system with the hydraulic power system, wherein the hydraulic power system can balance the gravity imbalance of a lifting kinematic pair of the lifting system, reduce the power and electric energy requirements on a power source, and simultaneously ensure the stable operation of the lifting system.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
For the sake of understanding and simplicity of description, the following description is taken in conjunction with a hydraulic power system and a lifting system having the same, and the beneficial effects will not be repeated.
Referring to fig. 1 and 2, fig. 1 is a schematic structural diagram of an embodiment of a hydraulic power system for a variable counterweight of a lifting system according to the present invention; fig. 2 presents a simplified diagram of the operating principle of the elevator in a concrete embodiment.
The lifting system comprises a power source 20 and a load 43, wherein the power source 20 can drive the load 43 to lift, and normally, the power source 20 drives the driving wheel 41 to rotate to drive the load 43 to lift. The power source 20 may be a motor.
Normally, the elevator system will be provided with a fixed counterweight 44 to balance the load 43 for energy saving, although there are also elevator systems without a counterweight, and the fixed counterweight can be considered zero.
In practical application, the load 43 of the lifting system can be changed according to requirements or actual operation conditions, the fixed counterweight 44 is difficult to balance the load 43 under different working conditions, and the hydraulic power system 10 provided by the invention is matched with the fixed counterweight 44, is equivalent to a variable counterweight and can balance according to the change of the load 43.
In the lifting system provided with the fixed counterweight 44, the fixed counterweight 44 and the load 43 are connected to both ends of the drive rope 42 passing around the drive wheel 41, respectively, and when the power source 20 drives the drive wheel 41 to rotate, power is transmitted by the friction force between the drive wheel 41 and the drive rope 42, thereby lifting and lowering the load 43.
In this embodiment, the hydraulic power system 10 includes a hydraulic motor set 101, a first reservoir 102 and a second reservoir 103, the hydraulic motor set 101 includes at least one hydraulic motor 111, the first reservoir 102 is located above the second reservoir 102 with a set height difference therebetween, and the hydraulic motor set 101 is in transmission connection with the driving wheels 41 through the transmission mechanism 31.
In actual setting, the set height difference may be set according to application environment, requirements, and the like, and the liquid stored in the first liquid storage device 102 and the second liquid storage device 103 may be a liquid medium such as water.
Wherein, the first liquid storage device 102 is communicated with a first interface of the hydraulic motor group 101 through a first pipeline 104, the second liquid storage device 103 is communicated with a second interface of the hydraulic motor group 101 through a second pipeline 105, a reversing component is arranged on the relevant pipeline, the reversing component has at least two working positions and is configured as follows:
the hydraulic motor group 101 is located at a first working position, a first interface of the hydraulic motor group 101 is a liquid inlet, and a second interface of the hydraulic motor group 101 is a liquid outlet, so that the hydraulic motor group 101 works in a motor mode, that is, liquid in the first liquid storage device 102 located above flows to the second liquid storage device 103 located below through the hydraulic motor group 101, the potential energy of the liquid is reduced, the liquid is converted into mechanical energy which is output through an output shaft of the hydraulic motor group 101, and power torque is provided for the driving wheel 41;
and the hydraulic motor group 101 is located at the second working position, the first interface of the hydraulic motor group 101 is a liquid outlet, and the second interface is a liquid inlet, so that the hydraulic motor group 101 works in a pump mode, that is, liquid in the second liquid storage device 103 located below flows to the first liquid storage device 102 located above through the hydraulic motor group 101, the potential energy of the liquid is increased, and through the transmission speed change mechanism 31, the hydraulic motor group 101 provides power for increasing the potential energy of the liquid, that is, the hydraulic motor group 101 provides resistance torque for the driving wheel 41.
As described above, after the hydraulic power system 10 is added to the power system of the lifting system, in practical application, the hydraulic motor set 101 may be controlled to provide the power torque or the resistance torque according to the change of the load 43 during the operation of the lifting system, so as to balance the gravity imbalance of the lifting kinematic pair caused by the change of the load 43, reduce the power and the electric energy requirements of the power source 20, and ensure the stability of the operation of the lifting system.
It will be appreciated that the lifting kinematic pair of the lifting system comprises a load 43, and when a fixed counterweight 44 is provided, a fixed counterweight 44 and a drive rope 42 connecting the fixed counterweight 44 and the load 43.
Meanwhile, the installation of the first liquid storage device 102 and the second liquid storage device 103 is not limited by factors such as the height of the application environment of the lifting system, and the like, and can be set according to actual conditions, so that the application is convenient.
Further, the reversing component has a third operating position, and in the third operating position, the first pipeline 104 and the second pipeline 105 are both in a non-conducting state, that is, the hydraulic power system 10 does not operate.
In a specific scheme, the first liquid storage device 102 and the second liquid storage device 103 both comprise more than one liquid storage tank.
When more than two liquid storage tanks are arranged on each liquid storage device, the heights of the liquid storage tanks of the first liquid storage device 102 are not required to be consistent, and likewise, the heights of the liquid storage tanks of the second liquid storage device 103 are not required to be consistent, so that the liquid storage tanks are convenient to flexibly arrange. However, it is understood that the reservoirs of the first reservoir 102 and the corresponding reservoirs of the second reservoir 103 should have a height differential to allow fluid potential energy and mechanical energy to be converted to each other to achieve either a motive torque output or a resistive torque output of the hydraulic power system 10.
In a specific embodiment, the hydraulic motor group 101 includes two or more hydraulic motors 111, and the hydraulic motors 111 are arranged in parallel.
In the solution shown in fig. 1, the first liquid storage device 102 and the second liquid storage device 103 are both provided with only one liquid storage tank, and the hydraulic motor group 101 is specifically three hydraulic motors 111 arranged in parallel, it should be noted that fig. 1 is only a simple illustration of each component, and does not show an actual structure. This example will be specifically described below.
In the embodiment shown in fig. 1, the first pipeline 104 includes three first branch pipelines 141, one end of each of the three first branch pipelines 141 is communicated with the first liquid storage device 102, and the other end is communicated with the first ports of the three hydraulic motors 111; the second pipeline 105 includes three second branch pipelines 151, one end of each of the three second branch pipelines 151 is communicated with the second liquid storage device 103, and the other end is communicated with the second ports of the three hydraulic motors 111.
On this basis, the reversing component specifically includes three reversing valve groups 106, the reversing valve group 106 includes more than one reversing valve, and each reversing valve group 106 is used for switching the working mode of the corresponding hydraulic motor 111, that is, each hydraulic motor 111 can be independently controlled. In practical applications, the directional valves of the directional valve set 106 may be electronically controlled directional valves, etc. to communicate with a controller of the lifting system to achieve automatic control.
In practical applications, the hydraulic motor group 101 may also have only one hydraulic motor 111, or have more hydraulic motors 111, and each hydraulic motor 111 may have a single-cylinder structure or a multi-cylinder structure, or may have other structural forms; according to the specific type of the hydraulic motor 111, the structure of the reversing valve group 106 corresponding to each hydraulic motor 111 can be set as required, so that the flow of the hydraulic motor group 101 can be adjusted as required, the output torque of the hydraulic motor 111 can be accurately controlled, and energy waste is avoided.
Specifically, the number of the directional valves of the directional valve group 106 is related to the number of the power channels of the corresponding hydraulic motor 111, so that each power channel of the hydraulic motor 111 can be independently controlled, the working positions of the directional valves are switched according to requirements, and the opening and closing conditions and the opening number of the power channels of the hydraulic motors 111 are adjusted, so that the hydraulic motor group 101 generates the required torque and output power.
The controller of the lifting system is used for switching the working position of the reversing component according to the running information of the lifting system, so that the hydraulic motor group 101 forms a balance torque to balance the gravity imbalance of the lifting kinematic pair. That is, in actual control, the torque generated by the hydraulic power system 10 is only used to balance the gravity imbalance of the lifting kinematic pair. Wherein the operation information of the elevator system includes the operation direction of the load 43 and the difference between the load 43 and the fixed pair 44.
As such, the arrangement of the hydraulic power system 10 may be considered as a supplement to the fixed counterweight 44, with the understanding that the hydraulic power system 10 and the fixed counterweight 44 together comprise a dynamically adjustable counterweight.
Specifically, the controller of the lifting system may pre-store the relevant information of the hydraulic power system 10, including the liquid level difference between the first liquid storage device 102 and the second liquid storage device 103, the number of the hydraulic motors 111 in the hydraulic motor group 101, the relevant parameters of each hydraulic motor 111, and the like; in use, the controller can take the magnitude of the load imbalance and the direction of travel of the load 43 and control the number of hydraulic motors 111 actually engaged in operation in order for the hydraulic power system 10 to produce torque that is only used to balance the unbalanced torque of the elevator kinematic pair.
It will be understood that the unbalanced torque of the lifting kinematic pair, whose direction is correlated to the direction of movement, will be briefly described below in connection with fig. 2, in which the working principle of the hydraulic power system 10 is illustrated in each operating state of the lifting system.
When the gravity of the lifting kinematic pair is unbalanced and the weight M1 of the side where the load 43 is located is greater than the weight M2 of the side where the fixed counterweight 44 is located, in the state shown in fig. 2, a counterclockwise torque is generated due to the gravity deviation of the lifting kinematic pair, and at this time, the hydraulic power system 10 is controlled to provide a clockwise torque to balance the counterclockwise torque, and when the lifting system is operated, the output torque M of the power source 20 is controlled to be equal to the counterclockwise torquein1The potential energy conversion of the liquid storage device is used for overcoming dynamic force and moment and balancing potential energy change of the lifting kinematic pair.
Under the above condition, if the load 43 of the lifting system moves upwards, the potential energy of the lifting kinematic pair increases, and the reversing component of the hydraulic power system 10 should be switched to the first working position, so that the hydraulic motor group 101 works in the motor mode, and the output torque M is outputin2For power torque, the potential energy of the hydraulic power system 10 is reduced; if the load 43 of the lifting system runs downwards, the potential energy of the lifting kinematic pair is reduced, the reversing component of the hydraulic power system 10 should be switched to the second working position, so that the hydraulic motor group 101 works in the pump mode, and the output torque M isin2To resist torque, the potential energy of the hydraulic power system 10 is increased.
When the gravity of the lifting kinematic pair is unbalanced and the gravity M1 on the side of the load 43 is smaller than the weight M2 on the side of the fixed counterweight 44, in the state shown in fig. 2, a counterclockwise torque is generated due to the gravity deviation of the lifting kinematic pair, and at this time, the hydraulic power system 10 is controlled to provide the counterclockwise torque to balance the clockwise torque, and when the lifting system operates, the output torque M of the power source 20 is controlledin1The potential energy conversion of the liquid storage device is used for overcoming dynamic force and moment and balancing potential energy change of the lifting kinematic pair.
Under the above condition, if the load 43 of the lifting system moves upwards, the potential energy of the lifting kinematic pair is reduced, and the reversing component of the hydraulic power system 10 should be switched to the second working position, so that the hydraulic motor group 101 works in the pump mode, and the output torque M isin2To resist torque, the potential energy of the hydraulic power system 10 is increased; if the load 43 of the lifting system moves downwards, the potential energy of the lifting kinematic pair increases, and the reversing component of the hydraulic power system 10 should be switched to the first working position to enable the hydraulic fluid to flow downwardsThe motor group 101 operates in a motor mode and outputs a torque Min2The potential energy of the hydraulic power system 10 is reduced for motive torque.
Referring to fig. 3, fig. 3 is a schematic diagram showing a first embodiment of the hydraulic power system 10 applied to a lifting system.
As shown in fig. 3, the lifting system is not provided with a fixed counterweight, and in practical applications, the lifting system may be an escalator, the hydraulic power system 10 and the power source 20 are in transmission connection with the same transmission speed change mechanism 31, and the transmission speed change mechanism 31 is in transmission connection with the driving wheel 41. When the elevator system is an escalator, the power source 20 may be a traction motor, and the driving wheel 41 may be a traction sheave.
Referring to fig. 4, fig. 4 is a schematic diagram showing a second embodiment of the hydraulic power system 10 applied to a lifting system.
As shown in fig. 4, the lifting system is provided with a fixed counterweight 44, in practical application, the lifting system may be a straight ladder, the fixed counterweight 44 and the load 43 are disposed on two sides of the driving wheel 41 through the driving rope 42, and in the illustrated embodiment, the hydraulic power system 10 and the power source 20 are also in transmission connection with the same transmission mechanism 31.
When the elevator system is a vertical elevator, the load 43 specifically includes a car and passengers or load, and similarly, the power source 20 may be a traction motor, and the driving pulley 41 may be a traction sheave.
Referring to fig. 5, fig. 5 is a schematic diagram showing a third embodiment of the hydraulic power system 10 applied to a lifting system.
As shown in fig. 5, the lifting system is also provided with a fixed counterweight 44, the fixed counterweight 44 and a load 43 are arranged on both sides of the driving wheel 41 through a driving rope 42, in the illustrated embodiment, the hydraulic power system 10 is in transmission connection with the driving wheel 41 through a transmission speed change mechanism 31, and the power source 20 is in transmission connection with the driving wheel 41 through a speed change device 32.
Specifically, the lifting system is provided with two driving wheels 41, the driving rope 42 sequentially passes through the two driving wheels 41, the hydraulic power system 10 is in transmission connection with one of the driving wheels 41, and the power source 20 is in transmission connection with the other driving wheel 41, so that flexible arrangement of the hydraulic power system 10 is facilitated. The lifting system may also be a straight ladder.
Above-mentioned staircase and vertical ladder belong to elevator system together, with aforementioned hydraulic power system application to elevator system in, can realize that dynamic adjustment is to heavy, tow the moment of torsion of motor and can effectively turn into the power of motion, improve passenger's comfort level.
The hydraulic power system for the variable counterweight and the lifting system with the hydraulic power system are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (10)

1. The hydraulic power system for the variable counterweight comprises a transmission speed change mechanism, and is characterized by further comprising a hydraulic motor set, a first liquid storage device and a second liquid storage device, wherein the hydraulic motor set is in transmission connection with the transmission speed change mechanism;
the hydraulic motor group comprises at least one hydraulic motor, the first liquid storage device is positioned above the second liquid storage device, and a set height difference is formed between the first liquid storage device and the second liquid storage device;
the first liquid storage device is communicated with a first interface of the hydraulic motor group through a first pipeline, and the second liquid storage device is communicated with a second interface of the hydraulic motor group through a second pipeline;
the reversing component is provided with at least two working positions and is configured to: and the hydraulic motor group works in a motor mode and is positioned at a second working position, the first interface is a liquid outlet, and the second interface is a liquid inlet so as to ensure that the hydraulic motor group works in a pump mode.
2. The hydraulic power system of claim 1, wherein the first and second fluid reservoirs each include more than one fluid reservoir.
3. The hydraulic power system of claim 2, wherein the hydraulic motor pack includes more than two hydraulic motors, each of the hydraulic motors being arranged in parallel;
the first pipeline comprises first branch pipelines with the same number as the hydraulic motors, and the hydraulic motors are communicated with the first liquid storage device through the first branch pipelines;
the second pipeline comprises second branch pipelines with the same number as the hydraulic motors, and the hydraulic motors are communicated with the second liquid storage device through the second branch pipelines;
the reversing component comprises reversing valve groups with the same number as the hydraulic motors, and each reversing valve group is arranged on a connecting pipeline of each hydraulic motor and used for switching the working modes corresponding to the hydraulic motors.
4. The hydraulic power system of claim 3, wherein the direction changing component further has a third operating position in which the first and second lines are both non-conductive.
5. The hydraulic power system as claimed in any one of claims 1 to 4, further comprising a controller for switching the operating positions of the reversing members according to the operation information of the lifting system so that the hydraulic motor group forms a balance torque for balancing the gravity imbalance of the lifting kinematic pair.
6. The hydraulic power system of claim 5, wherein the operating information of the lift system includes a load operating direction of the lift system and a difference between the load and a fixed counterweight of the lift system.
7. A lifting system comprising a drive wheel and a power system comprising a power source for driving the drive wheel in rotation, characterized in that the power system further comprises a hydraulic power system according to any one of claims 1-6.
8. The lift system of claim 7, wherein the power source and the hydraulic motor set are drivingly connected to the same transmission gear; or the power system further comprises a speed changing device, and the power source is in transmission connection with the driving wheel through the speed changing device.
9. The lift system of claim 7, further comprising a drive rope routed around the drive wheel, wherein the drive rope is connected at each end to a load and a fixed counterweight.
10. A hoisting system as claimed in any one of claims 7-9, characterized in that the hoisting system is embodied as an elevator system, the power source is a traction motor and the drive wheel is a traction sheave.
CN202010081683.3A 2020-02-06 2020-02-06 Hydraulic power system for variable counterweight and lifting system with hydraulic power system Pending CN111173798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010081683.3A CN111173798A (en) 2020-02-06 2020-02-06 Hydraulic power system for variable counterweight and lifting system with hydraulic power system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010081683.3A CN111173798A (en) 2020-02-06 2020-02-06 Hydraulic power system for variable counterweight and lifting system with hydraulic power system

Publications (1)

Publication Number Publication Date
CN111173798A true CN111173798A (en) 2020-05-19

Family

ID=70625183

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010081683.3A Pending CN111173798A (en) 2020-02-06 2020-02-06 Hydraulic power system for variable counterweight and lifting system with hydraulic power system

Country Status (1)

Country Link
CN (1) CN111173798A (en)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1124607A (en) * 1964-12-02 1968-08-21 Raoul Albert Rougemont Improvements in or relating to passenger and freight elevators
US20040173412A1 (en) * 2001-11-16 2004-09-09 Hugo Birbaumer Hydraulic elevator with a pressure accumulator and method for controlling and adjusting said elevator
CN201458471U (en) * 2009-08-25 2010-05-12 陈莹胤 Balanced energy saver of elevator
CN103241619A (en) * 2013-05-22 2013-08-14 太原理工大学 Energy saving elevator and operation control method thereof
CN106144855A (en) * 2016-08-19 2016-11-23 湖南电气职业技术学院 The method and apparatus that a kind of tractive driving apparatus of load balance and energy regenerating utilize
CN106395514A (en) * 2016-11-01 2017-02-15 湖南科技大学 Method and device for realizing dynamic balance, energy saving and self-weight requirement reduction of traction elevator
CN209411562U (en) * 2019-01-16 2019-09-20 国新电梯科技股份有限公司 A kind of energy-conserving elevator

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1124607A (en) * 1964-12-02 1968-08-21 Raoul Albert Rougemont Improvements in or relating to passenger and freight elevators
US20040173412A1 (en) * 2001-11-16 2004-09-09 Hugo Birbaumer Hydraulic elevator with a pressure accumulator and method for controlling and adjusting said elevator
CN1589224A (en) * 2001-11-16 2005-03-02 布奇尔液压公司 Hydraulic elevator with a pressure accumulator and method for controlling and adjusting said elevator
CN201458471U (en) * 2009-08-25 2010-05-12 陈莹胤 Balanced energy saver of elevator
CN103241619A (en) * 2013-05-22 2013-08-14 太原理工大学 Energy saving elevator and operation control method thereof
CN106144855A (en) * 2016-08-19 2016-11-23 湖南电气职业技术学院 The method and apparatus that a kind of tractive driving apparatus of load balance and energy regenerating utilize
CN106395514A (en) * 2016-11-01 2017-02-15 湖南科技大学 Method and device for realizing dynamic balance, energy saving and self-weight requirement reduction of traction elevator
CN209411562U (en) * 2019-01-16 2019-09-20 国新电梯科技股份有限公司 A kind of energy-conserving elevator

Similar Documents

Publication Publication Date Title
CN202612232U (en) Hydraulic motor driving device and long spiral drilling machine main winch adopting same
CN107420384B (en) System is used in the storage of lifting device gravitional force P-V
CN202379608U (en) Boarding rotating hydraulic control system and crane provided with same
CN103298727B (en) Lift facility
CN201105952Y (en) Telescopic boom crane lift hook lifting compensating gear
CN105539132B (en) Dual power drive system, engineering machinery vehicle and control method
CN103507633A (en) Control system circuit of heavy-duty hydraulic plate transportation vehicle
CN201269045Y (en) Emergency hoisting and automatic bit feeding apparatus of oil-well rig
WO2013086882A1 (en) Crane, and closed-type hoist negative power control system for use with crane
KR20010021249A (en) Crane apparatus
CN102917972A (en) Apparatus for controlling raise speed of working machine for heavy equipment
CN102515025B (en) Superstructure rotary hydraulic control system and crane with same
CN102320510A (en) Hydraulic elevator
CN102992150A (en) Hydraulic pressure variable counterweight elevator
CN111173798A (en) Hydraulic power system for variable counterweight and lifting system with hydraulic power system
CN113511601A (en) Rotary hydraulic system, engineering machinery and rotary control method
CN111237294B (en) Hydraulic system of walking pile driver
CN106949105A (en) The two-way proportional balanced valve and its application system in a kind of over-running load speed limit loop
CN104590995B (en) Full hydraulic control trolley system of bridge crane
CN114183416A (en) Three-way stacking type forklift hydraulic system
CN115402928A (en) Diesel engine monorail crane locomotive driving clamping automatic control system
WO2013076790A1 (en) Elevator device, and method for raising and lowering car and balance weight in elevator device
CN114212715A (en) Control method of hydraulic system of crane
US5975246A (en) Hydraulically balanced elevator
CN105236226A (en) Counterweight and car self-balancing energy-saving elevator

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication

Application publication date: 20200519

RJ01 Rejection of invention patent application after publication