CN111891924A - Monorail crane car and hydraulic system thereof - Google Patents
Monorail crane car and hydraulic system thereof Download PDFInfo
- Publication number
- CN111891924A CN111891924A CN202010921781.3A CN202010921781A CN111891924A CN 111891924 A CN111891924 A CN 111891924A CN 202010921781 A CN202010921781 A CN 202010921781A CN 111891924 A CN111891924 A CN 111891924A
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- Prior art keywords
- hydraulic
- control valve
- hydraulic control
- port
- assembly
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/18—Control systems or devices
- B66C13/20—Control systems or devices for non-electric drives
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- 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
- F15B1/00—Installations or systems with accumulators; Supply reservoir or sump assemblies
- F15B1/02—Installations or systems with accumulators
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- 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
- F15B13/06—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with two or more servomotors
- F15B13/08—Assemblies of units, each for the control of a single servomotor only
- F15B13/0803—Modular units
- F15B13/0807—Manifolds
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/14—Actuating mechanisms for brakes; Means for initiating operation at a predetermined position
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2121/00—Type of actuator operation force
- F16D2121/02—Fluid pressure
- F16D2121/04—Fluid pressure acting on a piston-type actuator, e.g. for liquid pressure
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- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D2125/00—Components of actuators
- F16D2125/02—Fluid-pressure mechanisms
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Automation & Control Theory (AREA)
- Braking Systems And Boosters (AREA)
Abstract
The invention discloses a monorail crane vehicle and a hydraulic system thereof, which comprise a hydraulic liquid supply assembly for providing hydraulic oil, a hydraulic pipeline for connecting each assembly and a travelling crane assembly for braking or travelling of a locomotive, wherein the hydraulic liquid supply assembly is communicated with the travelling crane assembly through the hydraulic pipeline, and the hydraulic pipeline is provided with a hydraulic control valve for controlling the flowing direction of an oil way and a hydraulic energy accumulator for adjusting the pressure of the hydraulic pipeline. Through the technical scheme of the monorail crane locomotive hydraulic system provided by the application, the automatic control of removing parking brake, real-time parking brake and implementing emergency brake is realized, the automation degree is high, the safe operation of the locomotive is realized, the friction wheel ensures enough positive pressure through the effect of the compression oil cylinder, enough adhesive force is provided for the operation of the locomotive, and the walking of the monorail crane locomotive is realized.
Description
Technical Field
The invention belongs to the technical field of monorail cranes, and particularly relates to a monorail crane and a hydraulic system thereof.
Background
The coal mine electric monorail crane is important transportation equipment in coal mine production, and the hoisting is preferably carried out through a hydraulic system due to the fact that the hoisting weight is usually large. The hydraulic control valve is an element for controlling the pressure, flow and direction of liquid, and comprises a main oil inlet (port P), a main oil return port (port T) and a working oil inlet or return port (port A or port B). The parking system and the hoisting system of the hydraulic system of the traditional monorail crane are separated, and the parking brake is usually controlled manually, so that the requirement of automation is not met, and the potential safety hazard of incomplete braking exists.
Accordingly, further developments and improvements are still needed in the art.
Disclosure of Invention
In order to solve the above problems, a monorail crane and a hydraulic system thereof are proposed. The invention provides the following technical scheme:
the hydraulic system of the monorail crane comprises a hydraulic liquid supply assembly for providing hydraulic oil, a hydraulic pipeline for connecting the assemblies and a traveling crane assembly for braking or traveling of the locomotive, wherein the hydraulic liquid supply assembly is communicated with the traveling crane assembly through the hydraulic pipeline, and a hydraulic control valve for controlling the flowing direction of an oil way and a hydraulic energy accumulator for adjusting the pressure of the hydraulic pipeline are arranged on the hydraulic pipeline.
Furthermore, the hydraulic control valve comprises a first hydraulic control valve and a second hydraulic control valve, a port P of the first hydraulic control valve is connected with the oil outlet end of the hydraulic liquid supply assembly, a port A of the first hydraulic control valve is connected with a port P of the second hydraulic control valve, a port A of the second hydraulic control valve is connected with the traveling crane assembly, and a port T of the second hydraulic control valve is connected with the oil return end of the hydraulic liquid supply assembly.
Furthermore, the hydraulic control valve also comprises a third hydraulic control valve and a fourth hydraulic control valve, wherein a port B of the first hydraulic control valve is connected with a port P of the third hydraulic control valve, a port A of the third hydraulic control valve is connected with a port P of the fourth hydraulic control valve, a port A of the fourth hydraulic control valve is connected with the traveling crane assembly, and a port T of the fourth hydraulic control valve is connected with an oil return end of the hydraulic liquid supply assembly.
The hydraulic control system is characterized by further comprising a hoisting hydraulic assembly for hoisting the locomotive, the hydraulic liquid supply assembly is communicated with the hoisting hydraulic assembly through a hydraulic pipeline, a port B of a third hydraulic control valve is connected with the hoisting hydraulic assembly, and a port T of the third hydraulic control valve is connected with an oil return end of the hydraulic liquid supply assembly.
Furthermore, the hydraulic accumulator is arranged on a hydraulic pipeline between the first hydraulic control valve and the second hydraulic control valve, and a first pressure sensor for detecting the pressure of the section of hydraulic pipeline is further arranged on the hydraulic pipeline between the first hydraulic control valve and the second hydraulic control valve.
Furthermore, a fifth hydraulic control valve used for adjusting the pressure of a pipeline connected with the fourth hydraulic control valve is arranged between the oil inlet pipeline and the oil return pipeline of the fourth hydraulic control valve, and a second pressure sensor is arranged on a hydraulic pipeline corresponding to the fifth hydraulic control valve.
Furthermore, the traveling crane assembly comprises a spring brake for pressing the track and a pressing oil cylinder for pressing a locomotive traveling wheel, the spring brake is connected with the port A of the second hydraulic control valve, and the pressing oil cylinder is connected with the port A of the fourth hydraulic control valve.
Furthermore, the driving assembly comprises a plurality of spring brakes, each spring brake is connected with the port A of the second hydraulic control valve, and each pressing oil cylinder is connected with the port A of the fourth hydraulic control valve.
Furthermore, the hoisting hydraulic assembly comprises a hoisting hydraulic control valve and a hoisting hydraulic motor, a port P of the hoisting hydraulic control valve is connected with a port B of the third hydraulic control valve, a port T of the hoisting hydraulic control valve is connected with an oil return end of an oil tank, and a port A and a port B of the hoisting hydraulic control valve are connected with an inlet and an outlet of the hoisting hydraulic motor.
A monorail crane vehicle comprises a monorail crane vehicle hydraulic system.
Has the advantages that:
through the technical scheme of the monorail crane locomotive hydraulic system provided by the application, the automatic control of removing parking brake, real-time parking brake and implementing emergency brake is realized, the automation degree is high, the safe operation of the locomotive is realized, the friction wheel ensures enough positive pressure through the effect of the compression oil cylinder, enough adhesive force is provided for the operation of the locomotive, and the walking of the monorail crane locomotive is realized.
Drawings
FIG. 1 is a schematic diagram of a connection structure of a hydraulic system of a monorail crane in an embodiment of the invention.
In the drawings: 1-a first hydraulic control valve; 2-a second hydraulic control valve; 3-a third hydraulic control valve; 4-a fourth hydraulic control valve; 5-a fifth hydraulic control valve; 6-lifting the hydraulic control valve; 7-an oil tank; 8-a hydraulic pump; 9-hoisting the hydraulic motor; 10-a hydraulic accumulator; 11-a first pressure sensor; 12-a second pressure sensor; 13-a spring brake; and 14, pressing the oil cylinder.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following description of the technical solutions of the present invention with reference to the accompanying drawings of the present invention is made clearly and completely, and other similar embodiments obtained by a person of ordinary skill in the art without any creative effort based on the embodiments in the present application shall fall within the protection scope of the present application. In addition, directional terms such as "upper", "lower", "left", "right", etc. in the following embodiments are directions with reference to the drawings only, and thus, the directional terms are used for illustrating the present invention and not for limiting the present invention.
Example 1
As shown in figure 1, the hydraulic system of the monorail crane comprises a hydraulic liquid supply assembly for supplying hydraulic oil, a hydraulic pipeline for connecting the assemblies and a travelling crane assembly for braking or travelling of the locomotive, wherein the hydraulic liquid supply assembly is communicated with the travelling crane assembly through the hydraulic pipeline, and a hydraulic control valve for controlling the flowing direction of an oil way and a hydraulic accumulator 10 for regulating the pressure of the hydraulic pipeline are arranged on the hydraulic pipeline.
Furthermore, the hydraulic control valve comprises a first hydraulic control valve 1 and a second hydraulic control valve 2, a port P of the first hydraulic control valve 1 is connected with an oil outlet end of the hydraulic liquid supply assembly, a port A of the first hydraulic control valve 1 is connected with a port P of the second hydraulic control valve 2, a port A of the second hydraulic control valve 2 is connected with a traveling crane assembly, and a port T of the second hydraulic control valve 2 is connected with an oil return end of the hydraulic liquid supply assembly.
Furthermore, the hydraulic control valve also comprises a third hydraulic control valve 3 and a fourth hydraulic control valve 4, a port B of the first hydraulic control valve 1 is connected with a port P of the third hydraulic control valve 3, a port A of the third hydraulic control valve 3 is connected with a port P of the fourth hydraulic control valve 4, a port A of the fourth hydraulic control valve 4 is connected with a traveling crane assembly, and a port T of the fourth hydraulic control valve 4 is connected with an oil return end of a hydraulic liquid supply assembly.
Furthermore, the hydraulic control system also comprises a hoisting hydraulic assembly for hoisting the locomotive, the hydraulic liquid supply assembly is communicated with the hoisting hydraulic assembly through a hydraulic pipeline, a port B of the third hydraulic control valve 3 is connected with the hoisting hydraulic assembly, and a port T of the third hydraulic control valve 3 is connected with an oil return end of the hydraulic liquid supply assembly.
Further, the hydraulic accumulator 10 is disposed on a hydraulic pipeline between the first hydraulic control valve 1 and the second hydraulic control valve 2, and a first pressure sensor 11 for detecting the pressure of the hydraulic pipeline is further disposed on the hydraulic pipeline between the first hydraulic control valve 1 and the second hydraulic control valve 2.
Further, a fifth hydraulic control valve 5 for adjusting the pressure of a pipeline connected with the fourth hydraulic control valve 4 is further arranged between the oil inlet pipeline and the oil return pipeline of the fourth hydraulic control valve 4, and a second pressure sensor 12 is arranged on a hydraulic pipeline corresponding to the fifth hydraulic control valve 5.
Further, the travelling assembly comprises a spring brake 13 for pressing the track and a pressing oil cylinder 14 for pressing the travelling wheels of the locomotive, the spring brake 13 is connected with the port A of the second hydraulic control valve 2, and the pressing oil cylinder 14 is connected with the port A of the fourth hydraulic control valve 4. Through the action of the pressing oil cylinder 14, the friction wheel ensures enough positive pressure, so that enough adhesive force is provided for the running of the locomotive, and the running of the monorail crane is realized.
Further, the traveling crane assembly comprises a plurality of spring brakes 13, each spring brake 13 is connected with the port A of the second hydraulic control valve 2, and each hold-down cylinder 14 is connected with the port A of the fourth hydraulic control valve 4. Through setting up a plurality of parallelly connected driving subassemblies, strengthen the compressing tightly or the braking effect of driving or parking in-process, ensure the production security of driving or parking process.
Furthermore, the hoisting hydraulic assembly comprises a hoisting hydraulic control valve 6 and a hoisting hydraulic motor 9, a port P of the hoisting hydraulic control valve 6 is connected with a port B of the third hydraulic control valve 3, a port T of the hoisting hydraulic control valve 6 is connected with an oil return end of an oil tank 7, and the port A and the port B of the hoisting hydraulic control valve 6 are connected with an inlet and an outlet of the hoisting hydraulic motor 9. The lifting hydraulic assembly is matched with the traveling crane assembly, a set of hydraulic oil system is shared, hydraulic resources are fully utilized, unified regulation and control are more accurate, the number of accessories of the locomotive can be reduced by the aid of the common hydraulic system, and the whole locomotive is compact in structure.
Further, the hydraulic liquid supply assembly comprises an oil tank 7 with two ports, namely an oil outlet end and an oil return end, and a hydraulic pump 8 arranged at the oil outlet end of the oil tank 7.
The following examples of the system control process in different operating states are given:
when the system is in an initial state, the hydraulic pump 8 is in a non-working state, the left oil way of the first hydraulic control valve 1 is opened, the right oil way of the second hydraulic control valve 2 is opened, the middle oil way of the third hydraulic control valve 3 is opened, the right oil way of the fourth hydraulic control valve 4 is opened, the left oil way of the fifth hydraulic control valve 5 is opened, the spring elasticity of the spring brake 13 is the dominant force, the spring brake 13 is in a braking state, the spring is released for a stroke, so that the track is pressed to generate braking force, the right oil way of the fourth hydraulic control valve 4 is opened, the left oil way of the fifth hydraulic control valve 5 is opened, and the pressing oil.
When the system works, the hydraulic pump 8 works, the first pressure sensor 11 is in signal connection with the control system, the pressure signal of the hydraulic pipeline is fed back to the control system, the hydraulic accumulator 10 is preset with set pressure, when the pressure value of the hydraulic accumulator 10 is smaller than the set pressure value, the right oil way of the first hydraulic control valve 1 is opened, the hydraulic oil pump presses hydraulic oil in the oil tank into the hydraulic accumulator 10 until the pressure value of the hydraulic accumulator 10 detected by the first pressure sensor 11 reaches the set pressure value, the first pressure sensor 11 sends the pressure signal to the control system, and the control system controls the left oil way of the first hydraulic control valve 1 to be opened and reset. After entering through the first hydraulic control valve 1P port, the hydraulic oil output by the hydraulic oil pump enters through the first hydraulic control valve 1B port into the third hydraulic control valve 3P port, and then returns to the oil return end of the oil tank 7 through the third hydraulic control valve 3T port.
When the locomotive starts, the compression oil cylinder 14 needs to be compressed, and the spring brake 13 needs to release braking, so that the left oil path of the second hydraulic control valve 2 is opened, the hydraulic oil stored in the hydraulic energy accumulator 10 enters from the port P of the second hydraulic control valve 2 and enters the spring brake 13 through the port a of the second hydraulic control valve 2, and the hydraulic oil compresses the spring in the spring brake 13 to lift the brake rod, so that the braking state of the locomotive is released. Meanwhile, the left oil way of the third hydraulic control valve 3 is opened, hydraulic oil is pressed in from the port P of the first hydraulic control valve 1 by the hydraulic pump 8, is pressed in from the port P of the third hydraulic control valve 3 through the port B of the first hydraulic control valve 1, is pressed in from the port P of the fourth hydraulic control valve 4 through the port A of the third hydraulic control valve 3, the left oil way of the fourth hydraulic control valve 4 is opened, and the hydraulic oil enters a hydraulic oil cylinder through the port A of the fourth hydraulic control valve 4, so that the locomotive travelling wheel compression effect is realized, and the travelling adhesive force can be provided. Meanwhile, the second pressure sensor 12 detects the pressure of the pipeline in the loop in real time and reports the pressure to the control system, and according to the requirement of the compression oil cylinder 14, the control system performs pressurization or pressure relief operation on the loop by adjusting the fifth hydraulic control valve 5, so that the compression balance pressure required by the compression system is automatically adjusted in real time.
The emergency stop brake is the stop brake implemented when the locomotive meets emergency in the running process, when the emergency stop is needed, the right oil way of the second hydraulic control valve 2 is opened, and the hydraulic oil returns to the oil return end of the oil tank 7 from the spring brake 13 through the T port of the second hydraulic control valve 2.
When the whole machine is parked, the left oil way of the first hydraulic control valve 1 is opened, the right oil way of the second hydraulic control valve 2 is opened, the middle oil way of the third hydraulic control valve 3 is opened, the right oil way of the fourth hydraulic control valve 4 is opened, the left oil way of the fifth hydraulic control valve 5 is opened, and meanwhile, the hydraulic pump 8 stops working. The left oil way of the first hydraulic control valve 1 is opened, the oil tank 7 does not supply oil for the pipeline of the second hydraulic control valve 2 any more, the right oil way of the second hydraulic control valve 2 is opened, the hydraulic oil in the spring brake 13 returns to the oil return end of the oil tank 7 through the T port of the second hydraulic control valve 2, the hydraulic pressing force of the spring brake 13 is relieved, the spring is released for stroke, so that the rail is pressed to generate braking force, the right oil way of the fourth hydraulic control valve 4 is opened, the left oil way of the fifth hydraulic control valve 5 is opened, the hydraulic oil in the pressing oil cylinder 14 returns to the oil return end of the oil tank 7 through the T port of the fourth hydraulic control valve 4, the pressing oil cylinder 14 is in a non-oil.
When the hydraulic component needs to be lifted to work, the hydraulic pump 8 works, the left oil way of the first hydraulic control valve 1 is opened, the right oil way of the second hydraulic control valve 2 is opened, the spring brake 13 is in a braking state, the right oil way of the third hydraulic control valve 3 is opened, the right oil way of the fourth hydraulic control valve 4 is opened, the left oil way of the fifth hydraulic control valve 5 is opened, and the pressing oil cylinder 14 is in a non-oil supply state. The hydraulic pump 8 presses hydraulic oil into a port P of the first hydraulic control valve 1, enters a port P of the third hydraulic control valve 3 through a port B of the first hydraulic control valve 1, flows into a port P of the lifting hydraulic control valve 6 through a port B of the third hydraulic control valve 3, completes a hydraulic oil circuit loop through a port A and a port B of the lifting hydraulic control valve 6, and returns to an oil return end of the oil tank 7 through a port T of the lifting hydraulic control valve 6.
Example 2
A monorail crane vehicle comprises a monorail crane vehicle hydraulic system, and the monorail crane vehicle hydraulic system adopts the technical scheme of the monorail crane vehicle hydraulic system in embodiment 1.
The present invention has been described in detail, and it should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention.
Claims (10)
1. The hydraulic system of the monorail crane is characterized by comprising a hydraulic liquid supply assembly for providing hydraulic oil, a hydraulic pipeline for connecting the assemblies and a traveling assembly for braking or traveling of a locomotive, wherein the hydraulic liquid supply assembly is communicated with the traveling assembly through the hydraulic pipeline, and a hydraulic control valve for controlling the flowing direction of an oil way and a hydraulic energy accumulator for adjusting the pressure of the hydraulic pipeline are arranged on the hydraulic pipeline.
2. The hydraulic system of a monorail crane as defined in claim 1, wherein said hydraulic control valves comprise a first hydraulic control valve and a second hydraulic control valve, the port P of the first hydraulic control valve is connected to the oil outlet end of the hydraulic supply assembly, the port a of the first hydraulic control valve is connected to the port P of the second hydraulic control valve, the port a of the second hydraulic control valve is connected to the travelling crane assembly, and the port T of the second hydraulic control valve is connected to the oil return end of the hydraulic supply assembly.
3. The hydraulic system of a monorail crane as defined in claim 2, wherein said hydraulic control valves further comprise a third hydraulic control valve and a fourth hydraulic control valve, the port B of the first hydraulic control valve is connected to port P of the third hydraulic control valve, the port a of the third hydraulic control valve is connected to port P of the fourth hydraulic control valve, the port a of the fourth hydraulic control valve is connected to the travelling crane assembly, and the port T of the fourth hydraulic control valve is connected to the oil return end of the hydraulic fluid supply assembly.
4. The hydraulic system of a monorail crane vehicle as defined in claim 3, further comprising a hoisting hydraulic assembly for hoisting the vehicle, wherein said hydraulic fluid supply assembly is connected to the hoisting hydraulic assembly through a hydraulic pipeline, the port B of the third hydraulic control valve is connected to the hoisting hydraulic assembly, and the port T of the third hydraulic control valve is connected to the oil return end of the hydraulic fluid supply assembly.
5. The monorail crane hydraulic system of claim 2, wherein the hydraulic accumulator is disposed on the hydraulic line between the first hydraulic control valve and the second hydraulic control valve, and a first pressure sensor for detecting the pressure of the hydraulic line is disposed on the hydraulic line between the first hydraulic control valve and the second hydraulic control valve.
6. The hydraulic system of a monorail crane as defined in claim 3, wherein a fifth hydraulic control valve for adjusting the pressure of a line connected to the fourth hydraulic control valve is further provided between the oil inlet line and the oil return line of the fourth hydraulic control valve, and a second pressure sensor is provided on a hydraulic line corresponding to the fifth hydraulic control valve.
7. The monorail crane hydraulic system of claim 3, wherein the trolley assembly comprises a spring brake for pressing against the rail and a hold-down cylinder for pressing against the road wheels of the locomotive, the spring brake being connected to port A of the second hydraulic control valve, the hold-down cylinder being connected to port A of the fourth hydraulic control valve.
8. A monorail crane hydraulic system as defined in claim 7, wherein said travelling assembly includes a plurality of spring brakes, each spring brake being connected to port a of said second hydraulic control valve, and each hold-down cylinder being connected to port a of said fourth hydraulic control valve.
9. The hydraulic system of the monorail crane vehicle as defined in claim 4, wherein the hoisting hydraulic assembly comprises a hoisting hydraulic control valve and a hoisting hydraulic motor, the port P of the hoisting hydraulic control valve is connected with the port B of the third hydraulic control valve, the port T of the hoisting hydraulic control valve is connected with the oil return end of an oil tank, and the port A and the port B of the hoisting hydraulic control valve are connected with the inlet and the outlet of the hoisting hydraulic motor.
10. A monorail hoist vehicle comprising a monorail hoist hydraulic system as defined in any one of claims 1 to 9.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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CN202010921781.3A CN111891924A (en) | 2020-09-04 | 2020-09-04 | Monorail crane car and hydraulic system thereof |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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CN202010921781.3A CN111891924A (en) | 2020-09-04 | 2020-09-04 | Monorail crane car and hydraulic system thereof |
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CN111891924A true CN111891924A (en) | 2020-11-06 |
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CN202010921781.3A Withdrawn CN111891924A (en) | 2020-09-04 | 2020-09-04 | Monorail crane car and hydraulic system thereof |
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CN (1) | CN111891924A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114873461A (en) * | 2022-06-24 | 2022-08-09 | 尤洛卡(山东)矿业科技有限公司 | Hydraulic control system for lifting beam of monorail crane and working method of hydraulic control system |
EP4306374A1 (en) * | 2022-07-15 | 2024-01-17 | KNORR-BREMSE Systeme für Schienenfahrzeuge GmbH | Assembly and method for auxiliary release of a brake of a rail vehicle, and rail vehicle |
-
2020
- 2020-09-04 CN CN202010921781.3A patent/CN111891924A/en not_active Withdrawn
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN114873461A (en) * | 2022-06-24 | 2022-08-09 | 尤洛卡(山东)矿业科技有限公司 | Hydraulic control system for lifting beam of monorail crane and working method of hydraulic control system |
CN114873461B (en) * | 2022-06-24 | 2024-05-07 | 尤洛卡(山东)矿业科技有限公司 | Hydraulic control system for lifting beam of monorail crane and working method of hydraulic control system |
EP4306374A1 (en) * | 2022-07-15 | 2024-01-17 | KNORR-BREMSE Systeme für Schienenfahrzeuge GmbH | Assembly and method for auxiliary release of a brake of a rail vehicle, and rail vehicle |
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Application publication date: 20201106 |