CN111237362B - Electric cylinder hydraulic disc brake system and brake method - Google Patents
Electric cylinder hydraulic disc brake system and brake method Download PDFInfo
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- CN111237362B CN111237362B CN202010037193.3A CN202010037193A CN111237362B CN 111237362 B CN111237362 B CN 111237362B CN 202010037193 A CN202010037193 A CN 202010037193A CN 111237362 B CN111237362 B CN 111237362B
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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
- F16D55/00—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes
- F16D55/02—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members
- F16D55/22—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads
- F16D55/228—Brakes with substantially-radial braking surfaces pressed together in axial direction, e.g. disc brakes with axially-movable discs or pads pressed against axially-located rotating members by clamping an axially-located rotating disc between movable braking members, e.g. movable brake discs or brake pads with a separate actuating member for each side
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/085—Servomotor systems incorporating electrically operated control means using a data bus, e.g. "CANBUS"
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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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/08—Servomotor systems incorporating electrically operated control means
- F15B21/087—Control strategy, e.g. with block diagram
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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
- F16D2121/00—Type of actuator operation force
- F16D2121/18—Electric or magnetic
- F16D2121/24—Electric or magnetic using motors
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Braking Arrangements (AREA)
Abstract
The invention belongs to the field of mine hoisting equipment, and discloses an electric cylinder hydraulic disc brake system and a brake method thereof, wherein the system comprises a disc brake device, a gas station, an electric cylinder device and a control driving system, wherein the electric cylinder device comprises an electric cylinder and a linear motor device; an oil port of the electric cylinder, an oil outlet of the gas station and a brake oil port of the disc brake device are all connected with a system main pipeline, a movable end of the linear motor device is fixedly connected with an electric cylinder piston positioned in the electric cylinder, and a control driving system is used for driving the linear motor device to move; the brake piston is arranged in the brake cylinder, one end of the connecting bolt is fixedly connected with the brake piston, the other end of the connecting bolt penetrates through the brake cylinder and is fixedly connected with the lining plate, the disc spring group is arranged on the periphery of the connecting bolt and is located in the cylinder body of the lining plate, and the brake block is fixedly arranged on the outer side of the lining plate and is opposite to the brake disc. The invention has simple structure, reliable operation and high efficiency, and can be widely applied to the field of mine hoisting equipment.
Description
Technical Field
The invention belongs to the field of mine hoisting equipment, and particularly relates to an electric cylinder hydraulic disc brake system and a brake method thereof.
Background
The disc brake system is mainly applied to the brake and brake systems of various hoisting and transporting mechanical equipment such as belt conveyors, aerial ropeways, ship lifts and the like, in particular to the brake and brake systems of mine hoisting equipment. A disc brake system of mine hoisting equipment in the prior art is completed based on a disc brake system of hydraulic transmission and hydraulic proportional control and comprises a disc brake device, a hydraulic station, a control system, a hydraulic pipeline and a connecting cable. The disc brake device is a brake execution unit which applies positive pressure to a brake disc of the lifting equipment by adopting assemblies such as a disc spring, an oil cylinder, a brake block and the like. The hydraulic station is a power and control device which can provide adjustable pressure oil for a brake system actuating mechanism to realize work braking and safe braking. The working brake is a deceleration and stop operation process commonly used for normal work of the lifting equipment, the safety brake is an abnormal phenomenon of the lifting equipment, and when emergency stop is needed, an emergency brake process can be implemented according to a preset program.
In the disc brake system, the change of the braking force can be realized by adjusting the oil pressure of a hydraulic station matched with the brake system. The electro-hydraulic pressure regulating device on the hydraulic station controls the change of oil pressure, and the electro-hydraulic pressure regulating device is controlled by a brake handle on the operation table in a manual operation mode and is controlled by a closed loop of an electric control system in full-automatic lifting. When the lifting equipment needs emergency braking due to an emergency in the lifting process, the oil pressure value of a braking system is quickly reduced to a preset value, after the preset time is delayed, the oil pressure is quickly reduced to zero, the brake acts on a brake disc with the maximum positive pressure, the friction force between the brake disc and the brake disc is the maximum braking force of the lifting system, and the lifting equipment is in a safe braking state.
According to the working principle of a disc brake system, a hydraulic station is a key component in the brake system, is a source spring of brake energy and a brake torque adjusting controller, and comprises a large oil tank, an oil pump motor, an oil pump, a proportional overflow valve, a one-way valve, an electromagnetic directional valve and a large number of hydraulic protection and control devices. The system has poor anti-pollution capability, high cost, complex system, large maintenance workload and low reliability, and the production efficiency of the equipment is often improved due to the influence of the fault of the hydraulic station. If equipment maintenance is somewhat inadvertent, a significant safety hazard may occur during safety braking. In order to overcome the defects of the hydraulic station, a disc brake system using electric transmission to replace hydraulic transmission is proposed, for example, a disc brake device driven by a voice coil motor special for a mine hoist is proposed, and the problem of braking of small-sized mining hoisting equipment is solved. However, the existing linear motor technology such as a large-torque voice coil motor is not mature, and the size is large, so that the application of the linear motor technology to large-scale hoisting equipment is limited.
Disclosure of Invention
The invention overcomes the defects of the prior art, and solves the technical problems that: the utility model provides an electronic jar hydraulic pressure disc braking system and braking method thereof to realize the electric drive braking of large-scale lifting means.
In order to solve the technical problems, the invention adopts the technical scheme that: an electric cylinder hydraulic disc brake system comprising: the device comprises a disc brake device, a gas station, an electric cylinder device and a control driving system, wherein the electric cylinder device comprises an electric cylinder and a linear motor device; the oil port of the electric cylinder, the oil outlet of the gas station and the brake oil port of the disc brake device are all connected with a system main pipeline, the movable end of the linear motor device is fixedly connected with an electric cylinder piston positioned in the electric cylinder, and the control driving system is used for driving the linear motor device to move;
the disc brake device is including organizing the stopper floodgate that sets up respectively in the brake disc both sides, the stopper floodgate includes the brake release hydro-cylinder, brake piston, casing, connecting bolt, takes welt, brake pads and the belleville spring group of barrel, the brake piston sets up in the brake release hydro-cylinder, and connecting bolt's one end and brake piston fixed connection, the other end pass brake release hydro-cylinder and welt fixed connection, the belleville spring group sets up in the connecting bolt periphery and is located in the barrel of welt, the brake pads is fixed to be set up the welt outside to just to the position of brake disc.
The electric cylinder hydraulic disc brake system further comprises a pressure sensor and a pressure gauge which are arranged on a system main pipeline, an oil outlet of the gas station is connected with the system main pipeline through an oil outlet branch, and a quick-change connector, a manual switch and a one-way valve are sequentially arranged on the oil outlet branch; and a ventilation screw is arranged on the shell of the disc brake device and used for deflating.
The electric cylinder hydraulic disc brake system comprises a plurality of disc brake devices and a plurality of electric cylinder devices; the plurality of disc brake devices, the plurality of electric cylinder devices and the control drive system constitute a distributed integrated brake system.
The hydraulic disc brake system of the electric cylinder further comprises an emergency oil discharge device, wherein the emergency oil discharge device comprises an electromagnetic directional valve and an oil tank, one end of the electromagnetic directional valve is connected with a main system pipeline, and the other end of the electromagnetic directional valve is connected with the oil tank.
Control actuating system includes first PLC controller, second PLC controller, switch, UPS power supply unit, industrial computer and multichannel servo driver, first PLC controller, second PLC controller pass through the switch and are connected with the industrial computer, the industrial computer passes through the switch and is connected with remote monitering system, and the output of first PLC controller, second PLC controller is connected with multichannel servo driver's control end, multichannel servo driver is used for driving a plurality of linear electric motor device works, UPS power supply unit is used for control actuating system and linear electric motor device provide uninterrupted power source.
According to the electric cylinder hydraulic disc brake system, a hydraulic medium is replaced by a gas medium, the gas station is replaced by a gas source, and the brake cylinder is replaced by a brake cylinder.
In addition, the invention also provides a braking method of the electric cylinder hydraulic disc brake system, which comprises the following steps:
s1, connecting the disc brake device, the gas station, the emergency oil discharge device and the electric cylinder device with a system pipeline;
s2, opening a manual switch, and filling oil to the whole system through a one-way valve at the oil pressure of 0.5 Mpa;
s3, loosening the ventilation screw of the disc brake, discharging air in a system pipeline until the oil is blown out and no air bubble exists, tightening the ventilation screw, continuously adding oil until the pressure gauge shows a critical state of 0.5Mpa residual pressure, and closing the manual switch;
s4, when braking is needed, the current of the linear motor device is reduced by controlling the driving system, so that the electric cylinder piston moves outwards, the system pipeline pressure is reduced, the prestress of the disc spring group pushes the brake block to a brake disc to generate braking force, when the brake needs to be released, the current of the linear motor device is increased by controlling the driving system, so that the electric cylinder piston moves inwards, the system pipeline pressure is increased, and the brake piston overcomes the prestress of the disc spring group to pull the brake block to leave the brake disc for a certain distance; when emergency braking is needed, the control driving system sends a control signal to enable the current of the linear motor device to return to a set current, the oil pressure of the system returns to a buffering set value, the current returns to a zero point after a delay of several seconds, the piston of the electric cylinder returns to a set position, the oil pressure of a system pipeline is released to a brake set value, namely the residual pressure or the negative pressure is reduced, and the disc brake device rapidly brakes to realize safe braking.
The electric cylinder hydraulic disc brake system comprises a plurality of disc brake devices and a plurality of electric cylinder devices, wherein the disc brake devices are arranged at different positions on two sides of a brake disc in pairs; the plurality of disc brake devices, the plurality of electric cylinder devices and the control driving system form a distributed integrated brake system; the plurality of electric cylinder devices are divided into two or more groups, and are successively put into operation according to the groups during braking, so that a two-stage or multi-stage constant torque braking mode is realized.
According to the braking method of the electric cylinder hydraulic disc braking system, the electric cylinder device is configured to be in a double-secondary braking constant-torque braking mode according to the braking torque requirements of ascending and descending of the elevator.
The emergency safety braking mode is also configured with dedicated constant deceleration control software to be in a constant deceleration braking mode.
Compared with the prior art, the invention has the following beneficial effects:
1) the hydraulic station is replaced by the electric cylinder, the hydraulic station system is removed from the whole mine hoisting equipment system, electromagnetic valve devices such as a high-noise oil pump motor, an oil pump, a cooling device, a proportional overflow valve and the like are not needed, the problems of leakage and pollution of oil liquid in the hydraulic station, complex system, difficult maintenance and the like are solved, and the mine hoisting equipment system has the advantages of simple structure, reliable operation and high efficiency; the novel system has the advantages of low noise, energy conservation, cleanness, high rigidity, impact resistance, super-long service life and simple operation and maintenance.
2) Closed-loop servo control can be performed, and the control precision reaches 0.01 mm; the thrust is precisely controlled, and the control precision can reach 1%; the device is easy to be connected with control systems such as a PLC and the like, and high-precision motion control is realized. Outstanding precision and repeatability, connection and automatic synchronization process, convenient remote control, and bringing conditions for realizing the high-speed development of electrification, informatization and intelligent technologies of the braking technology of the mine hoisting equipment.
3) The inventive brake system may be arranged as a distributed integrated brake system. The actuator of the distributed integrated brake system is close to the lifting equipment brake, so that the brake response is fast and the dynamic characteristic of the brake pressure is good. The braking force of all the brakes can be independently controlled and adjusted, and the brake system has the advantages of flexible control, high braking force control precision and the like. The distributed independent electric cylinder braking systems are connected in parallel in the whole integrated system, one system fails, and other systems can replace the failed system to complete work, so that the redundancy and reliability of the system work are increased, the production efficiency of mines is improved, and the development direction of the next generation of braking systems is provided.
4) Electrification converts hydraulic and pneumatic operations into electrical motion, and machine performance can be significantly improved and cost advantages can be obtained through electrification. The cost of the electric actuator is lower than that of a hydraulic and pneumatic system with the same function. In particular, compared with the existing hydraulic constant-deceleration braking system, the cost is saved by at least 50% by adopting the electric cylinder constant-deceleration braking system. And because the electric cylinder is maintenance-free, the installation and debugging are easy, and a large amount of after-sale service cost is reduced.
5) The integration level of the servo linear motor system is high: the controller, the motor and the sensor can be integrally designed, and the high power density and miniaturization design of the motor device are realized. Greatly reducing the area of the lifting equipment garage. On the premise of achieving the same function, the electric linear actuator is installed more quickly and conveniently than a plurality of hydraulic and pneumatic components. The method is more significant for underground lifting equipment or derrick type lifting equipment.
Drawings
FIG. 1 is a schematic structural diagram of an electric cylinder hydraulic disc brake system according to an embodiment of the present invention;
FIG. 2 is a schematic view showing an installation structure of a disc brake apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of the operation of the control drive system in an embodiment of the present invention;
fig. 4 is a left side view of fig. 3.
In the figure: 1-linear motor device, 2-electric cylinder piston, 3-electric cylinder, 4-electric cylinder oil port, 5-gas station, 6-manual switch, 7-one-way valve, 8-electromagnetic directional valve, 9-brake piston, 10-disc spring group, 11-brake disc, 12-brake block, 13-ventilation screw, 14-disc brake device, 15-brake oil inlet, 16-system pipeline, 17-emergency oil discharge device, 18-quick change connector, 19-pressure sensor, 20-pressure gauge, 21-control driving system, 22-UPS, 23-brake release oil cylinder, 25-shell, 26-connecting bolt, 27-lining plate, 30-oil tank, 31-oil outlet branch, 1 a-brake shoe abrasion indicator, 2 a-disc spring fatigue indicator, 3 a-brake, 4 a-bracket, 5 a-oil inlet pipe, 6 a-fixing bolt, 7 a-leakage oil pipe and 8 a-oil collector.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides an electric cylinder hydraulic disc brake system including: a disc brake device 14, a gasoline station 5, an electric cylinder device including an electric cylinder 3 and a linear motor device 1, and a control drive system 21; the oil port 4 of the electric cylinder 3, the oil outlet of the gas station 5 and the brake oil port 15 of the disc brake device 14 are all connected with a system main pipeline 16, the movable end of the linear motor device 1 is fixedly connected with the electric cylinder piston 2 positioned in the electric cylinder 3, and the control driving system 21 is used for driving the linear motor device 1 to move.
The disc brake device 14 comprises a brake releasing oil cylinder 23, a brake piston 9, a shell 25, a connecting bolt 26, a lining plate 27 with a cylinder body, a brake block 12 and a disc spring group 10, wherein the brake piston 9 is arranged in the brake releasing oil cylinder 23, one end of the connecting bolt 26 is fixedly connected with the brake piston 9, the other end of the connecting bolt passes through the brake releasing oil cylinder 23 and is fixedly connected with the lining plate 27, the disc spring group 10 is arranged on the periphery of the connecting bolt 26 and is located in the cylinder body of the lining plate 27, and the brake block 12 is fixedly arranged on the outer side of the lining plate 27 and is just opposite to the position of the brake disc 11.
Specifically, as shown in fig. 1, the electric cylinder hydraulic disc brake system provided by this embodiment further includes a pressure sensor 19 and a pressure gauge 20 that are arranged on a system main pipe 16, an oil outlet of the gas station 5 is connected to the system main pipe 16 through an oil outlet branch 31, and the oil outlet branch 31 is provided with a quick-change connector 18, a manual switch 6 and a check valve 7 in sequence; the housing 25 of the disc brake device 14 is provided with ventilation screws 13, and the ventilation screws 13 are used for air release. Wherein the gasoline station 5 can be a small mobile fast gasoline station.
Further, in the present embodiment, the electric cylinder hydraulic disc brake system may include a plurality of disc brake devices 14 and a plurality of electric cylinder devices, as shown in fig. 2, which is a schematic view of the installation of 2 disc brake devices 14, and the disc brake devices 14 include a brake 3a, a bracket 4a, an oil inlet pipe 5a, an oil leakage pipe 7a, a brake shoe wear indicator 1a, a disc spring fatigue indicator 2a, an oil collector 8a, and the like. The braking torque of the brake is the friction torque generated when the brake shoes press the brake disc axially, and in order to prevent the brake disc from generating additional deformation, the main shaft does not bear additional axial force, and the disc brakes are used in pairs, each pair is called a pair of brake brakes. The brake brakes 3 are fastened on the brackets 4a of the disc brakes in pairs by the fixing bolts 6a, 1, 2, 3 and 4 or even more pairs of disc brakes can be simultaneously installed on each bracket, the specification and the number of pairs of disc brakes are determined according to the requirement of lifting equipment on the braking torque, the specification of the disc brakes is larger when the lifting equipment is larger, and the number of pairs of the disc brakes is larger, so that the requirement of the mine lifting equipment on the braking torque is met. In the present embodiment, the plurality of disc brake devices 14, the plurality of electric cylinder devices, and the control drive system 21 constitute a distributed integrated brake system. The distributed disc brakes with different numbers are configured with the same number of electric cylinder devices to form the same number of electric cylinder hydraulic disc brake systems, and the independent working systems are all connected through oil pipes to form an integral hydraulic brake system. The intelligent mine hoisting equipment can quickly establish brake release pressure, has quick dynamic response, flexible control of the braking force of the hoisting equipment and high control precision of the brake release pressure, and meets the requirement of carrying out high-precision following control on the brake release pressure of a dynamic target when the unattended intelligent operation mine hoisting equipment is automatically braked. In addition, when one electric cylinder of the distributed integrated brake system cannot work due to faults (such as sudden fault of a motor device and blockage of a special screw rod device), the rest brake systems can still work by providing brake release oil pressure for the fault brake system through pipelines due to the connection of system pipelines. The method is equivalent to multi-path parallel operation, and the redundancy of the working brake is increased.
Further, as shown in fig. 3, in this embodiment, control driving system 21 includes first PLC controller, second PLC controller, switch, industrial computer and multichannel servo driver, first PLC controller, second PLC controller pass through the switch and are connected with the industrial computer, the industrial computer passes through the switch and is connected with remote monitoring system, and the output of first PLC controller, second PLC controller is connected with multichannel servo driver's control end, multichannel servo driver is used for driving a plurality ofly linear electric motor device 1 works. In the embodiment of the invention, the braking torque and the process control are uniformly controlled by an intelligent control driving device 21, and the control driving device comprises two sets of redundant Programmable Logic Controllers (PLC), a multi-output servo driver, a switch, a remote monitoring device, an industrial personal computer and various data acquisition sensor devices. The Programmable Logic Controllers (PLC) which are redundant mutually control the servo driving device to control the plurality of servo motors to work according to the design requirements according to the requirements of control signals, the working parameters can be displayed and recorded through the industrial personal computer, remote real-time monitoring can be realized, and the intelligent control requirements are met. The servo motor controller employs a microprocessor-based printed circuit board and is equipped with additional software that allows communication between remote networks, supported by a built-in CAN bus, and continuous monitoring of motor critical parameters (e.g., voltage, speed, force and temperature) CAN protect the actuator and machine by preventing movement beyond normal ranges. The built-in stroke end limit switch is installed in the actuator, ensuring smooth and repeatable operation and protecting the connecting equipment and the actuator. The device CAN additionally communicate with any other equipment with a CAN field bus.
The lifting equipment has various specifications and models, large lifting equipment lifts more cargoes, the braking torque of the large lifting equipment needs to be correspondingly large to effectively brake the cargoes, and for brakes with different torques, according to the Pascal law that the closed liquid pressure is equal everywhere, the electric cylinder hydraulic disc braking system provided by the embodiment of the invention can correspondingly design and manufacture different areas of the electric cylinder piston according to the area of the brake piston. Thus, the requirement of braking of all mine hoisting equipment can be met.
Specifically, the electric cylinder hydraulic disc brake system provided by the embodiment further includes an emergency oil discharge device 17, where the emergency oil discharge device 17 includes an electromagnetic directional valve 8 and an oil tank 30, and one end of the electromagnetic directional valve 8 is connected to the system main pipe 16, and the other end is connected to the oil tank 30. The emergency oil drainage device is used as a parallel redundant oil return channel of the mine hoisting equipment, and because the system is a distributed integrated braking system, a plurality of sets of independent electric cylinder hydraulic disc brake devices are connected through pipelines, the emergency oil drainage device is equivalent to a multi-channel parallel redundant oil return channel and is far higher than the safety redundancy requirement of the national coal mine safety code on the brakes. During emergency braking, a relay coil of an electromagnetic directional valve 8 of an emergency oil drainage device 17 is triggered to electrify the electromagnetic directional valve 8, oil in a system pipeline 16 is put into an oil tank 30 through the electromagnetic directional valve 8, oil pressure of the system pipeline is rapidly released to be residual pressure, a brake block 12 approaches to a brake disc 11 at the fastest speed until the brake block is completely contacted, a disc spring group 10 releases residual precompression force to the brake disc 11, and the brake block 12 and the brake disc 11 generate friction force, so that the mine lifting equipment is decelerated according to certain deceleration and safe parking is realized.
Further, in the present embodiment, as shown in fig. 1, the electric cylinder hydraulic disc brake system further includes a UPS power supply device 22, and the UPS power supply device 22 is configured to provide an uninterruptible power supply to the control drive system 21 and the linear motor device 1. When the mine hoisting equipment encounters a power failure fault, the system must be braked emergently to prevent the faults of vehicle sliding and galloping due to the potential energy load of the equipment. The embodiment of the invention is provided with a power failure safety backup protection link of a mine hoisting equipment system, when the system has a power failure fault, the control driving system is still in a normal working state due to the power supply of a UPS device, a safety loop power failure signal acts to trigger and control the linear motor device 1 to quickly return to a set current under the condition of emergency power failure, and the linear motor device quickly returns to a zero point after a delay of several seconds, so that the electric cylinder piston 2 is driven to quickly return to a set position first, the linear motor device quickly returns to an original position after a delay of several seconds, the oil pressure of a system pipeline is quickly released to a set value, the oil pressure is quickly reduced to residual pressure or even negative pressure after a delay of several seconds, and the brake is quickly braked. The brake block 12 approaches the brake disc 11 at the fastest speed until the brake block is completely contacted, the disc spring assembly 10 releases the residual pre-compression force to the brake disc 11, and the brake block 12 generates a friction force with the brake disc 11, so that the mine hoisting equipment is decelerated according to a certain deceleration and a safe stopping function is realized. The emergency braking in power failure also executes a two-stage or multi-stage constant torque braking mode in the well, so that the condition that the lifting equipment system generates excessive braking deceleration or gravity freely slides due to power failure is prevented, and the safety of the lifting equipment is guaranteed.
The working principle of the invention is as follows:
the hydraulic disc brake device of the electric cylinder of the mine hoisting equipment generates braking force by a disc spring in a disc brake, and the hydraulic pressure transmitted and controlled by the electric cylinder overcomes the braking force of the disc spring to release the brake. In the braking state, the spring force of the disc spring group is used for braking. When the current of the servo linear motor is reduced to zero from the maximum (braking process), the spring force generated by the pretightening of the disc spring acts on a brake block (brake block) through the lining plate 27, and the applied positive spring force enables the brake block to be attached to the brake disc to generate a braking positive pressure, so that the rotation trend of the brake disc can be restricted. When the brake is released, the current of the servo linear motor is increased, when the current is gradually increased to the rated working current, a brake piston connected with the brake block 12 is driven to overcome the pretightening force of the disc spring group and compress the disc spring to generate displacement in the opposite direction of the brake disc, the piston drives the brake block 12 to move backwards through the connecting stud and the disc spring middle connecting shaft, a gap is formed between the brake block 12 and the brake disc, so that the brake positive pressure acting on the brake disc is relieved, and the brake is in the released state.
The working process is as follows:
after the control driving system 21 energizes the stator coil of the linear motor device 1 of the electric cylinder 3, the rotor rotates under the action of the magnetic field, and in order to ensure the control precision, the linear motor devices all adopt servo linear motor devices; the rotary motion of the linear motor device 1 is converted into linear motion with certain increment thrust after passing through a special lead screw, the electric cylinder piston 2 is pushed to the non-motor side, the pressure of a system closed hydraulic system begins to increase, and pressure oil enters a brake release oil cylinder 23 through a brake oil inlet 15 of the disc brake 14 through the system connecting pipeline 16. Along with the increase of the current of the linear motor device 1, the thrust of the electric cylinder piston 2 is also increased, the pressure of the system pipeline 16 is also increased, and the pressure is applied to the brake releasing oil cylinder 23 of the disc brake device 14, the brake piston 9 of the disc brake device 14 overcomes the prestress of the disc spring set 10, the brake block 12 is driven to move away from the brake disc 11, the current of the servo motor is continuously increased to the maximum designed current value through the operating platform handle, the thrust of the linear motor device 1 is maximum, and the disc spring set 10 is in the maximum pre-compression state. The brake block 12 is spaced from the brake disc 11, which is the brake release state. The gap is generally adjusted to be (1-2) mm, and the brake releasing process is finished. When braking is needed, the control handle of the operating platform rotates reversely, the current of the linear motor device 1 is reduced, the pressure of a system pipeline 16 is also reduced, under the pushing of the internal force released by the disc spring set 10, the thrust of the brake piston 9 of the disc brake device 14 is smaller than the prestress of the disc spring set 10, the brake block 12 is driven to move towards the brake disc direction, the current of the motor is continuously reduced to the minimum current value, the thrust of the linear motor device 1 is minimum, the disc spring set 10 releases the residual pre-compression force to the brake disc 11, the lifting device is in a braking state, and the force at the moment is the maximum braking force generated by the disc brake device 14. The braking process is ended. The above processes are repeated repeatedly, and the brake releases and brakes repeatedly. The disc brake 14 repeatedly works in a braking state and a brake releasing state under the control of the operating platform handle according to the process requirements of the mine hoisting equipment, and the normal working braking function of the mine hoisting equipment is realized.
When the mine hoisting equipment needs emergency safety braking due to an abnormal emergency in the hoisting process, no matter the electric cylinder piston 2 works at any position, because the servo motor device 1 is designed with the functions of quickly returning to a set current value in an emergency power-off mode and quickly returning to a zero point after delaying for several seconds, the servo motor device can drive the electric cylinder piston 2 to quickly return to the set position and quickly return to an original point after delaying for several seconds, so that the oil pressure of a system is quickly reduced to a buffering set value, quickly reduced to residual pressure or even negative pressure after delaying for several seconds, the oil pressure of a system pipeline is quickly released into the residual pressure or even the negative pressure, and the brake is quickly braked to realize safety braking. The brake block 12 approaches the brake disc 11 at the fastest speed until the brake block is completely contacted, the disc spring assembly 10 releases the residual pre-compression force to the brake disc 11, and the brake block 12 and the brake disc 11 generate a friction force, so that the mine hoisting equipment is decelerated according to a certain deceleration and a safe stopping function is realized.
In mine hoisting equipment, the brakes are used symmetrically in pairs and are fixedly mounted on the brake device. The number of pairs of the lifting devices is different according to the size of the lifting devices, the lifting load of the small lifting devices is light, 1 pair of brake brakes are installed on one brake device, the lifting load of the large lifting device is heavy, and 2-4 pairs of brake brakes are usually used. The brake devices are distributed on two sides of the winding drum, the single-roller mine hoisting equipment uses two sets of brake devices, and the double-roller mine hoisting equipment uses four sets of brake devices, so that additional side loads cannot be generated on the brake disc and the winding drum. In the embodiment of the invention, a scheme that one set of electric cylinder controls one set of brake device is adopted, and one set of mine hoisting equipment needs 2-4 sets of brake devices, namely 2-4 sets of electric cylinder hydraulic disc brake devices are needed by one set of mine hoisting equipment, and each set of electric cylinder hydraulic disc brake device simultaneously controls 1-4 pairs of brake brakes. 2-4 sets of electric cylinder hydraulic disc brake devices of a mine hoisting device are all connected through oil pipes to form an integrated integral hydraulic system, the 2-4 sets of electric cylinder hydraulic disc brake devices are respectively distributed at different positions of the hoisting device, the multiple sets of independent brake devices are connected in parallel through pipelines to form a unified brake system, and the mode of respectively controlling the brakes nearby is adopted, so that the integrated brake system is called as a distributed integrated brake system. The intelligent mine hoisting equipment can quickly establish brake pressure, has rapid dynamic response, flexible control of the brake force of the hoisting equipment and high control precision of the brake pressure, and meets the requirement of high-precision follow-up control on the dynamic target brake pressure when the unattended intelligent operation mine hoisting equipment automatically brakes. And has the following advantages: 1) when one set of electric cylinder of the distributed integrated brake system cannot work due to self faults (such as sudden fault of a motor device and blockage of a special screw rod device), the rest brake systems can provide working pressure for the fault brake system through pipelines due to the connection of system pipelines, and the system can still work. The method is equivalent to multi-path parallel operation, and the redundancy of the working brake is increased. 2) In order to reduce the impact on the mine hoisting equipment during safe emergency braking, in the process of 6.4.1 safe braking, each independent system in the distributed braking system can work in a segmented mode according to time delay, namely, a group of independent brake devices are firstly put into work, and a second group (Nth group) of independent brake devices are put into work after preset time intervals, so that a two-stage (multi-stage) constant torque braking mode can be realized. The specific process is that one set of electric cylinder device can make the linear motor device quickly return to the original point, and instantaneous braking can generate the first-stage braking torque, so that the lifting equipment can generate the deceleration meeting the regulation of coal mine safety regulations, and the whole lifting system can be ensured to be stably and reliably decelerated. After the calculated time is delayed for a period, the other 1 set of electric cylinder devices quickly return to the original point, and the second-stage braking torque is completely applied, so that the lifting equipment generates the braking torque meeting the regulation of coal mine safety regulations, and finally, the lifting equipment is safely in a static state. 3) In order to reduce the impact on the mine hoisting equipment during safe emergency braking, the distributed braking system can brake according to the working mode of reducing the oil pressure in stages, thereby forming the function of reducing the speed in stages. Therefore, a multistage constant torque braking mode or a constant deceleration braking mode is realized, and the safety of the mine hoisting equipment is guaranteed to the maximum extent.
Further, in the embodiment, the hydraulic medium in the system is replaced by a gas medium, the gas station 5 is replaced by a gas source, and the brake cylinder is replaced by a brake cylinder. In this embodiment, if the hydraulic medium is changed to a gas medium, the above-mentioned brake operation process can be also completed, and the operation device and the operation principle are not changed.
The electric cylinder hydraulic disc brake system provided by the embodiment of the invention omits a hydraulic station part, so that the hydraulic transmission common problems of oil pollution, high failure rate, inconvenient maintenance, running, leakage and the like which are difficult to solve, low production efficiency and the like caused by the hydraulic station are thoroughly solved. The structure is simple, and the cost is obviously reduced. Meanwhile, the distributed servo motor is easy to control, high in precision and high in safety redundancy, and basically belongs to a maintenance-free system. In addition, in the embodiment of the invention, the servo motor device 1 is internally provided with a communication device and an integrated current monitoring function, when the motor of the electric cylinder runs and is overloaded, the device can automatically cut off the power supply, so that the motor cannot be burnt, and meanwhile, a fault feedback signal is sent to an electric control system of the hoist, so that the safe running of the mine hoisting equipment is ensured.
On the other hand, the embodiment of the invention also provides a braking method of the above electric cylinder hydraulic disc brake system, which comprises the following steps:
s1, connecting the disc brake device 14, the gas station 5, the emergency oil discharge device 17 and the electric cylinder device with the system piping 16.
S2, opening the manual switch 6, and filling oil to the whole system at the oil pressure of 0.5Mpa through the check valve 7.
S3, loosening the disc brake vent screw 13, discharging air in a system pipeline until air bubbles do not exist in the oil bleeding, tightening the vent screw 13, continuing to add oil until the pressure gauge 20 shows a critical state of 0.5Mpa residual pressure, closing the manual switch 6, and ending the oil adding work. At this time, the electromagnetic directional valve 8 in the emergency oil drainage device 17 is in a cut-off state because of being not electrified in a non-emergency braking state, so that the hydraulic pressure of the system forms a pressure critical state close to the residual pressure of 0.5Mpa, and the preparation work of the system is finished. The gasoline station 5 can be evacuated and also can maintain the connected state.
S4, when braking is needed, the current of the linear motor device 1 is reduced by controlling the driving system 21, the electric cylinder piston 2 moves outwards, the pressure of a system pipeline 16 is reduced, the prestress of the disc spring group 10 pushes the brake block 12 to the brake disc 11 to generate braking force, when the braking is needed, the current of the linear motor device 1 is increased by controlling the driving system 21, the electric cylinder piston 2 moves inwards, the pressure of the system pipeline 16 is increased, and the brake piston 9 overcomes the prestress of the disc spring group 10 to pull the brake block 12 to be away from the brake disc 11 by a certain distance; when emergency braking is needed, the current of the linear motor device 1 is reduced by controlling the driving system 21, the electric cylinder piston 2 is enabled to move outwards, the pressure of a system pipeline 16 is reduced, the prestress of the disc spring group 10 pushes the brake block 12 to the brake disc 11 to generate braking force, when the brake is needed to be released, the current of the linear motor device 1 is increased by controlling the driving system 21, the electric cylinder piston 2 is enabled to move inwards, the pressure of the system pipeline 16 is increased, and the brake piston 9 overcomes the prestress of the disc spring group 10 to pull the brake block 12 to be away from the brake disc 11 for a certain distance; when emergency braking is needed, the control driving system 21 sends a control signal to enable the current of the linear motor device 1 to return to the set current first, and the current returns to the zero point after being delayed for several seconds; at this time, the electric cylinder piston 2 quickly returns to the buffering set position, and quickly returns to the original point after a delay of several seconds, so that the oil pressure of the system pipeline 16 is firstly released to the buffering set value, and quickly falls to the band-type brake set value after a delay of several seconds, the band-type brake set value of the oil pressure is residual pressure or negative pressure, and the disc brake device 14 is rapidly band-type braked, thereby realizing safe braking.
Further, in the present embodiment, the electric-cylinder hydraulic disc brake system includes a plurality of disc brake devices 14 and a plurality of electric-cylinder devices, the plurality of disc brake devices 14 being provided in pairs at different positions on both sides of the brake disc 11; the plurality of disc brake devices 14, the plurality of electric cylinder devices and the control drive system 21 constitute a distributed integrated brake system; the plurality of electric cylinder devices are divided into two or more groups, and are successively put into operation according to the groups during braking, so that a two-stage or multi-stage constant torque braking mode is realized.
Further, in the present embodiment, the electric cylinder device is configured to a double-stage braking constant torque braking mode based on direction automatic recognition according to the braking torque requirements for raising and lowering the hoist. The automatic direction identification control system for lifting and lowering the lifting equipment is provided, and secondary braking is implemented according to different requirements of different emergency braking torques in the lifting and lowering working conditions and different emergency braking requirements, so that the requirement of the direction automatic identification double-secondary braking constant torque braking function is met. In addition, no hardware facilities are required to be added, and the emergency safety braking mode can be designed into a constant deceleration braking mode by matching with special constant deceleration control software.
When the mine hoisting equipment encounters a power failure fault, the system must be braked emergently to prevent the faults of vehicle sliding and galloping due to the potential energy load of the equipment. The embodiment of the invention is provided with a power failure safety backup protection link of a mine hoisting equipment system, when the system has a power failure fault, the control driving system 21 is still in a normal working state due to the power supply of the UPS device, the emergency power failure of the servo motor device 1 which is triggered by the power failure signal of the safety loop and supplied by the UPS device is quickly returned to a set current value firstly, the emergency power failure of the servo motor device 1 which is delayed for a plurality of seconds is quickly returned to a zero point function, the control driving system can drive the electric cylinder piston 2 to quickly return to the set position for a plurality of seconds and then quickly return to the original point position, the oil pressure of a system pipeline is quickly reduced to a set value firstly, the oil pressure is quickly reduced to residual pressure or even negative pressure after. The brake block 12 approaches the brake disc 11 at the fastest speed until the brake block is completely contacted, the disc spring assembly 10 releases the residual pre-compression force to the brake disc 11, and the brake block 12 and the brake disc 11 generate a friction force, so that the mine hoisting equipment is decelerated according to a certain deceleration and a safe stopping function is realized. The emergency braking in power failure is carried out in the well according to 6.4.2, a two-stage or multi-stage constant torque braking mode is carried out at the well mouth, a one-stage constant torque braking mode is carried out at the well mouth, the lifting equipment system is prevented from entering a gravity free sliding state due to power failure, and the safety of the lifting equipment is guaranteed.
In addition, in the embodiment of the invention, each set of hydraulic disc brake device with the electric cylinder carries out emergency braking by rapidly returning to zero through the electric cylinder, and is also provided with an emergency oil drainage device as a parallel redundant oil return channel of the mine hoisting equipment. Because the embodiment is a distributed integrated braking system, a plurality of sets of independent electric cylinder hydraulic disc brake devices are connected through pipelines, which is equivalent to a multi-channel parallel redundant oil return channel, and any one set of emergency oil drainage device can realize an emergency braking function when working, and the safety redundancy requirement of the national coal mine safety regulation on the brake is far higher. During emergency braking, a relay coil of the electromagnetic directional valve 8 is triggered to electrify the electromagnetic directional valve 8, oil in a system pipeline 16 is put into an oil tank through the electromagnetic directional valve 8, oil pressure of the system pipeline is rapidly released to be residual pressure, the brake block 12 approaches to the direction of the brake disc 11 at the fastest speed until the brake block is completely contacted, the disc spring group 10 releases residual precompression force to the brake disc 11, and the brake block 12 and the brake disc 11 generate friction force, so that the mine hoisting equipment is decelerated according to certain deceleration and safe parking is realized.
And after the emergency braking is finished, repairing the fault causing the emergency braking, and checking that the mine hoist has no problem. When the normal state is to be recovered, the following steps are executed:
s5, opening the manual switch 6, and filling oil to the whole system at the oil pressure of 0.5Mpa through the check valve 7.
S6, loosening the disc brake vent screw 13, discharging air in a system pipeline until air bubbles do not exist in the oil bleeding, tightening the vent screw 13, continuing to add oil until the pressure gauge 20 shows a critical state of 0.5Mpa residual pressure, closing the manual switch 6, and ending the oil adding work. At this time, the electromagnetic directional valve 8 in the emergency oil drainage device 17 is in a cut-off state because of being not electrified in a non-emergency braking state, so that the hydraulic pressure of the system forms a pressure critical state close to the residual pressure of 0.5Mpa, and the preparation work of the system is finished. The gasoline station 5 can be evacuated and also can maintain the connected state. The system is restored to a normal operating state.
The invention can be applied to mine hoisting equipment such as mine hoists, mine hoisting winches and the like, and can also be applied to belt transmission equipment, building winches, ship lifts, cranes and elevator equipment, and the braking working principle of the invention is consistent with that of the mine hoisting equipment, and description is not repeated. The invention is easy to realize for reforming the existing equipment because the original hydraulic station power source is changed into the electric cylinder power source, the disc brake of the actuating device adopts the original device, and the mechanical size of the brake of the original mine hoisting equipment is not changed. Has wide application prospect.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. An electric cylinder hydraulic disc brake system, comprising: a disc brake device (14), a gasoline station (5), an electric cylinder device and a control drive system (21), wherein the electric cylinder device comprises an electric cylinder (3) and a linear motor device (1); an oil port (4) of the electric cylinder (3), an oil outlet of the gas station (5) and a brake oil port (15) of the disc-shaped brake device (14) are all connected with a system main pipeline (16), the movable end of the linear motor device (1) is fixedly connected with an electric cylinder piston (2) positioned in the electric cylinder (3), and the control driving system (21) is used for driving the linear motor device (1) to move;
disc brake device (14) include that 2 sets up the brake floodgate in brake disc (11) both sides respectively, the brake floodgate includes that brake-releasing hydro-cylinder (23), brake piston (9), casing (25), connecting bolt (26), lining board (27), brake pads (12) and belleville spring group (10) of taking the barrel, brake piston (9) set up in brake-releasing hydro-cylinder (23), the one end and brake piston (9) fixed connection of connecting bolt (26), the other end passes brake-releasing hydro-cylinder (23) and lining board (27) fixed connection, belleville spring group (10) set up in connecting bolt (26) periphery and are located in the barrel of lining board (27), brake pads (12) are fixed to be set up in the lining board (27) outside to just to the position of brake disc (11).
2. The electric cylinder hydraulic disc brake system according to claim 1, further comprising a pressure sensor (19) and a pressure gauge (20) arranged on a system main pipeline (16), wherein an oil outlet of the gasoline station (5) is connected with the system main pipeline (16) through an oil outlet branch (31), and a quick-change connector (18), a manual switch (6) and a one-way valve (7) are sequentially arranged on the oil outlet branch (31); a ventilation screw (13) is arranged on a shell (25) of the disc-shaped brake device (14), and the ventilation screw (13) is used for exhausting air.
3. An electric cylinder hydraulic disc brake system according to claim 2, including a plurality of disc brake devices (14) and a plurality of electric cylinder devices; the plurality of disc brake devices (14), the plurality of electric cylinder devices and the control drive system (21) constitute a distributed integrated brake system.
4. An electric cylinder hydraulic disc brake system according to claim 3, further comprising an emergency oil drain (17), the emergency oil drain (17) comprising a solenoid directional valve (8) and an oil tank (30), one end of the solenoid directional valve (8) being connected to the system main line (16) and the other end being connected to the oil tank (30).
5. An electric cylinder hydraulic disc brake system according to claim 1, wherein the control drive system (21) comprises a first PLC controller, a second PLC controller, a switch, a UPS (uninterrupted power supply) device (22), an industrial personal computer and a multi-way servo driver, the first PLC controller and the second PLC controller are connected with the industrial personal computer through the switch, the industrial personal computer is connected with a remote monitoring system through the switch, the output ends of the first PLC controller and the second PLC controller are connected with the control end of the multi-way servo driver, the multi-way servo driver is used for driving the linear motor devices (1) to work, and the UPS (22) is used for providing an uninterrupted power supply for the control drive system (21) and the linear motor devices (1).
6. An electric cylinder hydraulic disc brake system according to any one of claims 4-5, characterized in that the hydraulic medium in the system is replaced by a gas medium, the gasoline station (5) is replaced by a gas source, and the brake-release cylinder (23) is replaced by a brake cylinder.
7. A method of braking an electric cylinder hydraulic disc brake system according to claim 1, characterised by the steps of:
s1, connecting the disc brake device (14), the gas station (5), the emergency oil discharge device (17) and the electric cylinder device with a system main pipeline (16);
s2, opening the manual switch (6), and filling oil to the whole system at the oil pressure of 0.5MPa through the one-way valve (7);
s3, loosening the disc brake vent screw (13), discharging air in a system pipeline until the oil is blown out and no air bubble exists, tightening the vent screw (13), continuously filling oil until the pressure gauge (20) displays a critical state of 0.5MPa residual pressure, and closing the manual switch (6);
s4, when braking is needed, the current of the linear motor device (1) is reduced by controlling the driving system (21), the electric cylinder piston (2) moves outwards, the pressure of the system main pipeline (16) is reduced, the prestress of the disc spring set (10) pushes the brake block (12) to the brake disc (11) to generate braking force, when the brake is needed to be released, the current of the linear motor device (1) is increased by controlling the driving system (21), the electric cylinder piston (2) moves inwards, the pressure of the system main pipeline (16) is increased, and the brake piston (9) overcomes the prestress of the disc spring set (10) to pull the brake block (12) to be away from the brake disc (11) for a certain distance; when emergency braking is needed, the control driving system (21) sends a control signal to enable the current of the linear motor device (1) to return to a set current, the oil pressure of the system returns to a buffering set value, the current returns to a zero point after a delay of several seconds, the electric cylinder piston (2) returns to a set position, the oil pressure of the main pipeline (16) of the system is released to a brake set value, namely the residual pressure or the negative pressure is reduced, and the disc brake device (14) is rapidly braked to achieve safe braking.
8. A braking method of an electric cylinder hydraulic disc brake system according to claim 1, characterized in that the electric cylinder hydraulic disc brake system includes a plurality of disc brake devices (14) and a plurality of electric cylinder devices, the plurality of disc brake devices (14) being arranged in pairs at different positions on both sides of a brake disc (11); the plurality of disc brake devices (14), the plurality of electric cylinder devices and the control drive system (21) form a distributed integrated brake system; the plurality of electric cylinder devices are divided into two or more groups, and are successively put into operation according to the groups during braking, so that a two-stage or multi-stage constant torque braking mode is realized.
9. The method of braking an electric cylinder hydraulic disc brake system according to claim 8, wherein the electric cylinder devices are configured in a dual secondary braking constant torque braking mode based on the braking torque requirements of the hoist raising and lowering.
10. The method of claim 8, wherein the emergency safety braking mode is further configured with dedicated constant deceleration control software to the constant deceleration braking mode.
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| CN1041703C (en) * | 1993-11-26 | 1999-01-20 | 中国矿业大学 | Self-adaptive compensation booster brake for elevator |
| BRPI0605236A (en) * | 2006-12-06 | 2008-07-22 | Weatherford Ind E Com Ltda | remote braking system |
| CN100526833C (en) * | 2007-04-26 | 2009-08-12 | 中国矿业大学 | Disc type brake performance detection method and device |
| CN201901554U (en) * | 2010-10-13 | 2011-07-20 | 铁法威跃矿山配件制造有限公司 | Winch for integral transportation of hydraulic bracket |
| CN110552980B (en) * | 2019-08-13 | 2020-08-07 | 赵瑞峰 | Electromechanical actuator for increasing axial force braking and mine hoisting equipment braking system |
| CN212225830U (en) * | 2020-01-14 | 2020-12-25 | 山西卓仕科技有限公司 | Hydraulic disc brake system of electric cylinder |
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Effective date of registration: 20240208 Address after: 030082, No. 206, Xijia North Street, Tanghuai Industrial Park, Shanxi Transformation and Comprehensive Reform Demonstration Zone, Taiyuan City, Shanxi Province Patentee after: Shanxi Xinfusheng Heavy Machinery Co.,Ltd. Country or region after: China Address before: 030032 No. 706-17, 7th floor, block a, Shengjiu building, No. 52, Longsheng street, Tanghuai Park, Shanxi comprehensive reform demonstration zone, Xiaodian District, Taiyuan City, Shanxi Province Patentee before: Shanxi Zhuoshi Technology Co.,Ltd. Country or region before: China |
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