CN113247766A - Novel hydraulic self-locking anti-climbing device - Google Patents
Novel hydraulic self-locking anti-climbing device Download PDFInfo
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- CN113247766A CN113247766A CN202110679510.6A CN202110679510A CN113247766A CN 113247766 A CN113247766 A CN 113247766A CN 202110679510 A CN202110679510 A CN 202110679510A CN 113247766 A CN113247766 A CN 113247766A
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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
- B66C9/00—Travelling gear incorporated in or fitted to trolleys or cranes
- B66C9/18—Travelling gear incorporated in or fitted to trolleys or cranes with means for locking trolleys or cranes to runways or tracks to prevent inadvertent movements
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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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
- F15B11/08—Servomotor systems without provision for follow-up action; Circuits therefor with only one servomotor
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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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
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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
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
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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
- F16H—GEARING
- F16H47/00—Combinations of mechanical gearing with fluid clutches or fluid gearing
- F16H47/02—Combinations of mechanical gearing with fluid clutches or fluid gearing the fluid gearing being of the volumetric type
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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
- F15B13/04—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor
- F15B13/044—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors for use with a single servomotor operated by electrically-controlled means, e.g. solenoids, torque-motors
- F15B2013/0448—Actuation by solenoid and permanent magnet
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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)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Actuator (AREA)
Abstract
The invention discloses a novel hydraulic self-locking anti-climbing device which comprises a connecting support and supporting side plates, wherein a hydraulic cylinder is arranged between the two supporting side plates, one side of one supporting side plate is provided with a hydraulic power unit for driving the hydraulic cylinder, the bottom end of the hydraulic cylinder is rotatably connected with a first rotating shaft, a piston rod of the hydraulic cylinder extends upwards, the end part of the piston rod is rotatably connected with a pull rod lifting shaft, the pull rod lifting shaft is hinged with the top end of an iron wedge connecting rod through a lever component, the piston rod of the hydraulic cylinder drives an anti-sliding wedge block to lift through the lever component, a central valve block of the hydraulic power unit is used for maintaining the pressure of the hydraulic cylinder in a motor power-off state, and a spring limiting component for controlling the opening and closing of a motor and placing the anti-sliding wedge block under a wheel tread is arranged between the pull rod lifting shaft and the first rotating shaft. The invention can avoid the problems that the oil temperature is increased, the sealing element is easy to damage and the lifting power small iron wedge is easy to pedal and die due to the continuous work of the electric hydraulic pusher in the existing wind-proof iron wedge brake.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a novel hydraulic self-locking anti-climbing device.
Background
The crane is one of the most important materials handling machines, is widely applied in various industries, and has to be a portal crane in the industries of machine manufacturing, metallurgy, steel, wharf container shipping and the like, wherein the outdoor portal crane has the lifting range from several tons to dozens of tons or even hundreds of tons, has larger self volume and occupied area, and is generally installed in an external field. The gantry crane has a large windward area, and in some areas with multiple wind damages, when the gantry crane is in a non-working state, the gantry crane is likely to move, overturn, derail and the like along the sliding rail without being operated by people under the thrust action of strong wind, so that potential safety hazards of personal safety and economic loss are caused.
At present, in order to avoid the phenomena of pulley, overturn, derailment and the like of the crane under the action of wind, except for a braking system of the crane, various types of wind-proof devices are mostly used for stabilizing the crane, such as: the electric hydraulic windproof iron wedge brake is widely applied, the electric hydraulic windproof iron wedge brake takes an electric hydraulic thruster as a power source, a lever and a connecting rod are taken as a lifting mechanism to realize automatic lifting, releasing and wedge wheel, when the electric hydraulic thruster is powered on, a push rod of the electric hydraulic thruster acts, the iron wedge is lifted through the lever and a transmission mechanism, so that the crane works normally, when the power is off, the push rod of the thruster is under the action of a spring force, the iron wedge is placed under a wheel tread in contact with a rail through the lever, when the crane is blown by burst gust wind, a wheel rolls onto the inclined plane of the iron wedge, the wheel pressure of the iron wedge by the crane is utilized to generate sliding friction force between the iron wedge and the rail surface, the crane is prevented from creeping, the whole machine is wedged, and the safety protection effect is achieved.
However, the power source of the iron wedge brake can provide less power, only 80Kg, when the track is not flat, the wheel of the crane has the condition that one side is higher and the other side is lower, the gravity of the whole crane can be borne by the lower wheel more, and after the inclined plane of the iron wedge at the side is pressed by the wheel, the iron wedge can not be lifted by the traditional iron wedge brake, so that the operation and the production of the crane are influenced. Meanwhile, if the traditional iron wedge brake needs to keep the iron wedge in a lifting state all the time, the electric hydraulic thruster needs to work all the time continuously, and the temperature rise of the motor is overhigh (can reach more than 100 ℃ at most), so that the motor is burnt out; and simultaneously, the oil temperature is increased, and the hydraulic sealing element is easy to damage at high temperature, so that the oil leakage problem is caused, and the normal production of the crane is influenced.
Disclosure of Invention
The invention aims to provide a novel hydraulic self-locking anti-climbing device, which solves the problems of overhigh motor temperature rise, high oil temperature rise, easy damage of a sealing element and small lifting power caused by continuous work of an electric hydraulic pusher in the existing wind-proof iron wedge brake.
In order to solve the problems, the invention adopts the following technical scheme:
a novel hydraulic self-locking anti-climbing device comprises a connecting support, one end of the connecting support is fixed at the end part of a lower end beam of a crane, the other end of the connecting support is vertically provided with two oppositely arranged supporting side plates, the top of one side of the two supporting side plates, which is far away from the connecting support, is provided with a buffer support, an anti-collision buffer is arranged on the buffer support, an iron wedge connecting rod and a connecting rod fulcrum shaft are arranged between the two supporting side plates, the bottom of the lower side of the iron wedge connecting rod is rotatably connected with an anti-sliding wedge block, a hydraulic cylinder is arranged between the two supporting side plates, one side of one of the two supporting side plates is provided with a hydraulic power unit for driving the hydraulic cylinder, the hydraulic power unit comprises an oil cylinder, a motor, a gear pump and a central valve block, the bottom of the hydraulic cylinder is rotatably connected with a first rotating shaft, the first rotating shaft is arranged between the two supporting side plates, a piston rod of the hydraulic cylinder extends upwards, and the end part of the piston rod is rotatably connected with a pull rod lifting shaft, the pull rod lifting shaft is hinged to the top end of the iron wedge connecting rod through the lever assembly, after the motor-driven gear pump finishes pumping oil to the hydraulic cylinder, a piston rod of the hydraulic cylinder drives the anti-slip wedge block to lift through the lever assembly, a central valve block of the hydraulic power unit is used for maintaining pressure of the hydraulic cylinder under a motor power-off state, and a spring limiting assembly used for controlling the motor to open and close and used for placing the anti-slip wedge block under a wheel tread is arranged between the pull rod lifting shaft and the first rotating shaft.
Optionally, in the hydraulic power unit, the motor is in transmission connection with the gear pump, an oil suction pipe of the gear pump extends into the oil cylinder, a filter screen is arranged on the oil suction pipe, a pressure oil inlet, a pressure oil outlet and an oil return port are arranged on the central valve block, the pressure oil inlet is communicated with the gear pump, the pressure oil outlet is communicated with a rodless cavity of the hydraulic cylinder through a pump oil pipe, the oil return port is communicated with the oil cylinder, a normally open type electromagnetic valve, an overflow valve and a stop valve are inserted on the central valve block, the pressure oil inlet is respectively connected with an oil inlet of the overflow valve and an oil inlet of the normally open type electromagnetic valve, the oil outlet of the normally open type electromagnetic valve is connected with an inlet of the stop valve, and the oil return port is respectively connected with an oil outlet of the overflow valve and an outlet of the stop valve.
Optionally, the spring limiting assembly comprises a spring cylinder, a compression spring, a spring pull rod, a limiting contact rod and a limiting switch, the spring pull rod is slidably connected in the spring cylinder, the bottom of the spring cylinder is rotatably connected to the first rotating shaft, the top end of the spring pull rod extends out of the spring cylinder and then is fixedly connected with a pull rod lifting shaft, the compression spring is located in the spring cylinder, two ends of the compression spring are respectively fixedly connected with the top wall of the spring cylinder and the bottom end of the spring pull rod, the limiting contact rod is fixedly connected to the spring pull rod, the limiting switch is installed on the upper portion of the spring cylinder, and when the limiting contact rod contacts with a swing rod of the limiting switch, the motor is powered off and the normally open type electromagnetic valve is powered on for pressure maintaining.
Optionally, the hydraulic cylinder is a single-acting hydraulic cylinder, an exhaust inlet is formed in the oil cylinder, and the exhaust inlet is connected with a rod cavity of the hydraulic cylinder through an exhaust pipe.
Optionally, the lever assembly comprises a first lever arm, a second lever arm and two second rotating shafts, the two second rotating shafts are arranged in parallel and are connected between the two supporting side plates in a rotating mode, the two second rotating shafts are in meshed transmission through two identical gears, one end of the first lever arm and one end of the second lever arm are fixed to the second rotating shafts respectively, the other end of the first lever arm is connected with the pull rod lifting shaft in a rotating mode, and the other end of the second lever arm is hinged to the top end of the iron wedge connecting rod.
Optionally, the length of the first lever arm is equal to or greater than the length of the second lever arm.
Optionally, the spring limiting assemblies are provided with two sets and located on two sides of the hydraulic cylinder respectively.
Optionally, a manual release lever is detachably and fixedly connected to an end portion of one of the second rotating shafts, and an axis of the manual release lever is perpendicular to an axis of the second rotating shaft.
Optionally, a support shaft sleeve is respectively arranged between the first lever arm and the two support side plates, the support shaft sleeve is sleeved on the second rotating shaft, and two ends of the second rotating shaft and two ends of the connecting rod fulcrum shaft are respectively rotatably connected with bearing chambers fixedly arranged on the support side plates through bearings.
Optionally, be connected with a plurality of back shafts between two support curb plates, the rain-proof cover of frame is installed on the top of two support curb plates, installs the rain-proof cover of motor on the support curb plate, and the rain-proof cover of motor is located the top of motor.
By adopting the technical scheme, the invention has the following advantages:
compared with a traditional electric hydraulic thruster power source, the hydraulic power unit provided by the invention has the advantages that the generated thrust is huge, hundreds of kilograms of thrust to dozens of tons of thrust can be realized, the anti-slip wedge block can be normally pulled out from the bottom of a wheel, and the condition that the anti-slip wedge block cannot be pulled out due to being pedaled by the wheel is prevented.
Meanwhile, under the working state of the crane, the hydraulic power unit and the spring limiting assembly are matched for use, the anti-slip wedge block can be in a lifting state all the time under the power-off state of the motor, meanwhile, the limiting pressure supplementing effect can be realized, the problems that the motor is easily burnt out due to continuous work of the electric hydraulic thruster and overhigh temperature rise of the motor in the traditional iron wedge can be avoided, and the oil leakage problem caused by hydraulic sealing elements due to overhigh oil temperature in the continuous operation process of the electric hydraulic thruster is avoided.
When the anti-slip wedge block is required to be placed under the wheel tread surface of a wheel in contact with a rail, the spring pull rod pulls the pull rod lifting shaft under the action of the gravity of the anti-slip wedge block through the spring limiting assembly, the anti-slip wedge block is placed under the wheel tread surface through the lever assembly, when the crane is blown by sudden gusts of wind, the wheel pressure of the crane on the anti-slip wedge block can be utilized to enable the anti-slip wedge block and the rail surface to generate sliding friction force, the crane is prevented from crawling, the whole machine is wedged, and the safety protection effect is achieved.
In the hydraulic power unit, the central valve block integrates various hydraulic valves, so that the connection of pipelines can be simplified, the overall structure is simple and compact, the assembly is convenient, and the assembly is convenient and rapid when a hydraulic element is damaged and replaced; the hydraulic valves are connected without pipes, and leakage, vibration or noise caused by oil pipes, pipe joints and the like is eliminated.
In addition, the transmission part of the invention adopts equidistant levers and two same gears for transmission, and the piston rod of the hydraulic cylinder and the iron wedge connecting rod can realize synchronous action; by adopting a double-spring structure, the anti-slip wedge block is easier to wedge at the bottom of a traveling wheel of the crane, and the normal wedging of the wheel is ensured and the wheel is not blown by strong wind; the bearing is adopted at the joint of the rotating shaft and the supporting side plate, so that the problem that the rotating shaft and the supporting side plate are directly rubbed and easily clamped in the traditional hydraulic windproof iron wedge can be solved.
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the internal structure of the present invention;
FIG. 3 is a schematic cross-sectional view of a hydraulic power unit of the present invention;
FIG. 4 is a front view of the present invention;
FIG. 5 is a right side view of FIG. 4;
FIG. 6 is a rear view of FIG. 4;
FIG. 7 is one of the operating schematic diagrams of the hydraulic power unit of the present invention (with the anti-skid wedge held up);
fig. 8 is a second schematic diagram of the operation of the hydraulic power unit of the present invention (the anti-skid wedge is placed in the tread surface state).
Reference numerals: 1. a connecting support, 2, a supporting side plate, 3, a buffer bracket, 4, a crash cushion, 5, an iron wedge connecting rod, 6, a connecting rod support shaft, 7, an anti-slip wedge, 8, a hydraulic cylinder, 9, a cylinder, 10, a motor, 11, a gear pump, 12, a central valve block, 13, a first rotating shaft, 14, a pull rod lifting shaft, 15, a spring cylinder, 16, a compression spring, 17, a spring pull rod, 18, a limit contact rod, 19, a limit switch, 20, an oil suction pipe, 21, a filter screen, 22, a pump oil pipe, 23, an exhaust pipe, 24, a normally open type electromagnetic valve, 25, an overflow valve, 26, a stop valve, 27, a check valve, 28, an exhaust inlet, 29, an oil filling port, 30, an oil discharge port, 31, an oil level observation window, 32, a first lever arm, 33, a second lever arm, 34, a second rotating shaft, 35, a manual release lever, 36, a supporting shaft sleeve, 37, a bearing chamber, 38 and a supporting shaft, 39. frame rain-proof cover, 40, motor rain-proof cover, 41, gear, 42, slip filament plate.
Detailed Description
In order to make the technical purpose, technical solutions and advantages of the present invention more clear, the technical solutions of the present invention are further described below with reference to fig. 1 to 8 and specific embodiments.
An embodiment of a novel hydraulic self-locking anti-climbing device:
a novel hydraulic self-locking anti-climbing device comprises a connecting support 1, one end of the connecting support 1 is fixed at the end part of a beam at the lower end of a crane, two supporting side plates 2 which are arranged oppositely are vertically arranged at the other end of the connecting support 1, a buffer support 3 is arranged at the top part of one side, far away from the connecting support 1, of the two supporting side plates 2, an anti-collision buffer 4 is arranged on the buffer support 3, a wedge connecting rod 5 and a connecting rod fulcrum 6 are arranged between the two supporting side plates 2, the connecting rod fulcrum 6 is rotatably connected between the two supporting side plates 2, the lower side of the wedge connecting rod 5 is erected on the connecting rod fulcrum 6, the relationship between the wedge connecting rod 5 and the connecting rod fulcrum 6 is a conventional structure in the prior art, the whole wedge connecting rod 5 is of a large-angle V-shaped structure, when the top end of the wedge connecting rod 5 rotates around a hinge point, the connecting rod fulcrum 6 rolls on the lower side surface of the wedge connecting rod 5 without sliding, the connecting rod fulcrum shaft 6 plays a limiting role, the bottom of the lower side of the iron wedge connecting rod 5 is rotatably connected with an anti-sliding wedge block 7, a hydraulic cylinder 8 is arranged between the two supporting side plates 2, a hydraulic power unit for driving the hydraulic cylinder 8 is installed on one side of one of the supporting side plates 2, the hydraulic power unit comprises an oil cylinder 9, a motor 10, a gear pump 11 and a central valve block 12, the bottom end of the hydraulic cylinder 8 is rotatably connected with a first rotating shaft 13, the first rotating shaft 13 is arranged between the two supporting side plates 2 in a penetrating manner, a piston rod of the hydraulic cylinder 8 extends upwards, the end part of the piston rod is rotatably connected with a pull rod lifting shaft 14, the pull rod lifting shaft 14 is hinged with the top end of the iron wedge connecting rod 5 through a lever assembly, the motor 10 drives the gear pump 11 to pump oil towards the hydraulic cylinder 8, the piston rod of the hydraulic cylinder 8 drives the anti-sliding wedge block 7 to lift through the lever assembly, and the central valve block 12 of the hydraulic power unit is used for maintaining the hydraulic cylinder 8 under the power-off state of the motor 10, the anti-skid wedge 7 is kept in a lifting state, and a spring limiting assembly for controlling the opening and closing of the motor 10 and placing the anti-skid wedge 7 under the wheel tread is arranged between the pull rod lifting shaft 14 and the first rotating shaft 13.
Further, as shown in fig. 7 and 8, in the hydraulic power unit, the motor 10 is in transmission connection with the gear pump 11, the oil suction pipe 20 of the gear pump 11 extends into the oil cylinder 9, the oil suction pipe 20 is provided with the filter screen 21, so that adverse effects caused by unclean oil in the oil cylinder 9 can be avoided, the service lives of the central valve block 12 and the hydraulic components can be prolonged, the failure rate can be reduced, the central valve block 12 is provided with a pressure oil inlet, a pressure oil outlet and an oil return port, the pressure oil inlet is communicated with the gear pump 11, the pressure oil outlet is communicated with the rodless cavity of the hydraulic cylinder 8 through the pump oil pipe 22, the oil return port is communicated with the oil cylinder 9, the central valve block 12 is inserted with the normally open type electromagnetic valve 24, the overflow valve 25 and the stop valve 26, the pressure oil inlet is respectively connected with the oil inlet of the overflow valve 25 and the oil inlet of the normally open type electromagnetic valve 24, the oil outlet of the normally open type electromagnetic valve 24 is connected with the inlet of the stop valve 26, the oil return port is respectively connected with an oil outlet of the overflow valve 25 and an outlet of the stop valve 26.
The central valve block 12 further comprises a check valve 27, and the check valve 27 is connected between the pressure oil inlet and the oil inlet of the normally open type electromagnetic valve 24 to prevent the oil in the oil chamber of the hydraulic cylinder 8 from flowing back to the gear pump 11 from the main oil path.
The central valve block 12 integrates various hydraulic valves, so that the connection of pipelines can be simplified, the overall structure is simple and compact, the assembly is convenient, and the assembly is convenient and rapid when hydraulic elements are damaged and replaced; the hydraulic valves are connected without pipes, and leakage, vibration or noise caused by oil pipes, pipe joints and the like is eliminated.
The overflow valve 25 can adjust the system pressure, the stop valve 26 can adjust the system flow, the check valve 27 can prevent the oil from flowing backwards, and the normally open type electromagnetic valve 24 is in a normal state (a normal state is a power-off state) with the oil inlet and the oil outlet communicated and is disconnected when being powered on. When the crane works and the anti-slip wedge 7 needs to be lifted, power is transmitted to the hydraulic power unit, the motor 10 and the normally-open type electromagnetic valve 24 are powered on, the gear pump 11 works, oil is pumped to the oil cavity of the hydraulic cylinder 8 through the central valve block 12, after a piston cylinder of the hydraulic cylinder 8 rises to a certain height, the limiting contact rod 18 in the spring limiting assembly is in contact with the oscillating rod of the limiting switch 19, the power supply of the motor 10 is cut off, the gear pump 11 stops pumping the oil, at the moment, the normally-open type electromagnetic valve 24 is still in a power-on state and is in a closed state, meanwhile, the stop valve 26 in the central valve block 12 is in a closed state, the normally-open type electromagnetic valve 24 can play a role in maintaining pressure of the hydraulic cylinder 8, the force for keeping the lifting state of the anti-slip wedge 7 is maintained by means of sealing of oil in the oil cavity of the hydraulic cylinder 8, the motor 10 does not need to work continuously, the pressure in the system is close to zero, and the temperature rise of hydraulic oil can be avoided.
When the anti-slip wedge 7 is kept in the lifting state, once the piston rod of the hydraulic cylinder 8 descends, the limit contact rod 18 leaves the limit switch 19, the power supply of the motor 10 is connected, the gear pump 11 works, oil is pumped to an oil cavity of the hydraulic cylinder 8 through the central valve block 12 for pressure compensation, the anti-slip wedge 7 is always in the lifting state, and the pressure compensation process is equivalent to inching.
When the anti-slip wedge 7 needs to be placed under the wheel tread of the contact between the wheel and the track, the power supply sent to the hydraulic power unit is cut off, the motor 10 does not work after being powered off, the normally open type electromagnetic valve 24 is communicated with the oil outlet after being powered off, meanwhile, the stop valve 26 is opened to release pressure, the oil in the oil chamber of the hydraulic cylinder 8 returns to the oil cylinder 9 through the normally open electromagnetic valve 24 and the stop valve 26, under the action of the gravity of a compression spring 16 and the anti-skid wedge 7 in the spring limiting assembly, the pull rod lifting shaft 14 is pulled through the spring pull rod 17, and then the anti-slip wedge block 7 is placed under the wheel tread through the lever assembly, when the crane is blown by sudden gust of wind, the wheel rolls on the inclined plane of the anti-slip wedge 7, and the wheel pressure of the crane on the anti-slip wedge 7 is utilized to generate sliding friction force between the anti-slip wedge 7 and the rail surface, so that the crawling of the crane is prevented, the whole machine is wedged, and the safety protection effect is achieved.
In the above working process, the circuit for supplying power to the motor 10 and the normally open type solenoid valve 24 is a conventional control circuit, and details are not repeated.
Further, as shown in fig. 2 and 5, the spring position limiting assembly includes a spring cylinder 15, a compression spring 16, a spring pull rod 17, a position limiting contact rod 18 and a position limiting switch 19, the spring pull rod 17 is slidably connected in the spring cylinder 15, a sliding wire plate 42 is detachably and fixedly connected to a bottom end of the spring pull rod 17, the spring pull rod 17 slides up and down in the spring cylinder 15 through the sliding wire plate 42, a bottom of the spring cylinder 15 is rotatably connected to the first rotating shaft 13, a top end of the spring pull rod 17 extends out of the spring cylinder 15 and is fixedly connected to the pull rod lifting shaft 14, the compression spring 16 is located in the spring cylinder 15, two ends of the compression spring 16 are respectively and fixedly connected to a top wall of the spring cylinder 15 and a bottom end of the spring pull rod 17, the position limiting contact rod 18 is detachably and fixedly connected to the spring pull rod 17 or the sliding wire plate 42 at the bottom end of the spring pull rod 17, the position limiting switch 19 is installed at an upper portion of the spring cylinder 15, and when the position limiting contact rod 18 is in contact with a swing rod of the position limiting switch 19, the motor 10 is powered off and the normally open solenoid valve is energized for pressure maintaining. The limiting contact rod 18 is L-shaped, the horizontal section of the limiting contact rod 18 is fixed on the spring pull rod 17 or a sliding wire plate 42 at the bottom end of the spring pull rod 17, and the vertical section of the limiting contact rod 18 moves upwards along with the spring pull rod 17 and then contacts with the swing rod of the limiting switch 19.
The spring limiting assembly can realize limiting pressure compensation on the hydraulic cylinder 8, when the anti-slip wedge 7 is lifted in place, the motor 10 is powered off, the central valve block 12 maintains pressure for the hydraulic cylinder 8, the anti-slip wedge 7 is always in a lifted state, if a piston rod of the hydraulic cylinder 8 descends due to external force, the spring limiting assembly can control the motor 10 to be re-started, oil is pumped for the hydraulic cylinder 8, and the anti-slip wedge 7 is always in a lifted state.
Further, the hydraulic cylinder 8 is a single-acting hydraulic cylinder, the oil cylinder 9 is provided with an exhaust inlet 28, and the exhaust inlet 28 is connected with a rod cavity of the hydraulic cylinder 8 through an exhaust pipe 23. During the extension of the piston rod, the gas in the rod cavity is released through the exhaust pipe 23, which is beneficial to the extension of the piston rod.
The oil cylinder 9 is also provided with an oil filling port 29, an oil discharge port 30 and an oil level observation window 31. The oil condition in the oil cylinder 9 is observed through the oil level observation window 31, so that oil can be conveniently added or discharged in time.
Further, the lever assembly comprises a first lever arm 32, a second lever arm 33 and two second rotating shafts 34, the two second rotating shafts 34 are arranged in parallel and are connected between the two supporting side plates 2 in a rotating mode, the two second rotating shafts 34 are in meshing transmission through two identical gears 41, one end of each of the first lever arm 32 and one end of each of the second lever arms 33 are fixed to the corresponding second rotating shaft 34, the other end of each of the first lever arms 32 is connected with the pull rod lifting shaft 14 in a rotating mode, and the other end of each of the second lever arms 33 is hinged to the top end of the iron wedge connecting rod 5.
Further, the length of first lever arm 32 is equal to or greater than the length of second lever arm 33, namely, the lever subassembly can be the equidistance lever, also can be laborsaving lever, and when adopting equidistance lever, the pin joint displacement distance of 8 piston rods of pneumatic cylinder and pull rod lift axle 14 and the pin joint displacement distance of second lever arm 33 and indisputable wedge connecting rod 5 are the same, and 8 piston rods of pneumatic cylinder and indisputable wedge connecting rod 5 simultaneous action can be laborsaving when adopting laborsaving lever.
Further, the spring limiting assemblies are provided with two groups and are respectively located on two sides of the hydraulic cylinder 8. By adopting a double-spring structure, the anti-slip wedge 7 is easier to wedge at the bottom of a traveling wheel of the crane, and the normal wedging of the wheel is guaranteed and the wheel is not blown by strong wind.
Further, a manual release lever 35 is detachably and fixedly connected to an end portion of one of the second rotating shafts 34, and an axis of the manual release lever 35 is perpendicular to an axis of the second rotating shaft 34. Through manual release lever 35, can make anti-skidding voussoir 7 promote through pressing manual release lever 35 when hydraulic power unit or other control circuit go wrong, close stop valve 26 and make anti-skidding voussoir 7 be in the lift state all the time, ensure hoist equipment normal operating.
Furthermore, support shaft sleeves 36 are respectively arranged between the first lever arm 32 and the two support side plates 2 and between the second lever arm 33 and the two support side plates 2, the support shaft sleeves 36 are sleeved on the second rotating shaft 34, and two ends of the second rotating shaft 34 and two ends of the connecting rod fulcrum shaft 6 are respectively in rotating connection with bearing chambers 37 fixedly arranged on the support side plates 2 through bearings. Through bearing chamber 37 and bearing, can solve traditional hydraulic pressure and prevent wind the problem that the pivot is with supporting curb plate 2 direct friction, easy jamming in the iron wedge.
Further, be connected with a plurality of back shafts 38 between two support curb plates 2, rain-proof cover 39 of frame is installed on the top of two support curb plates 2, installs motor rain-proof cover 40 on the support curb plate 2, and motor rain-proof cover 40 is located the top of motor 10.
The frame rain cover 39 and the motor rain cover 40 are arranged, so that the rainproof device is higher than the traditional rainproof protection measures, and the problem that the motor 10 of the traditional electric hydraulic thruster is burnt out or leaks electricity due to rainwater can be solved.
Compared with a traditional electric hydraulic thruster power source, the hydraulic power unit of the invention has the advantages that the generated thrust is huge, the thrust of hundreds of kilograms to dozens of tons can be realized, and the anti-skid wedge 7 can be normally pulled out from the bottom of the wheel (in the traditional iron wedge, the thrust of the electric hydraulic thruster is 80KG, and the anti-skid wedge 7 is easy to be stepped on by the wheel and can not be pulled out).
Meanwhile, the hydraulic power unit and the spring limiting assembly are matched for use, the anti-slip wedge 7 can be always in a lifting state under the power-off state of the motor 10, meanwhile, the limiting pressure supplementing effect can be realized, the problem that the motor 10 is easily burnt out when the electric hydraulic pusher continuously works in the traditional iron wedge can be avoided, and the problem that the oil leakage caused by hydraulic sealing elements is easily damaged when the electric hydraulic pusher continuously operates is avoided.
The above embodiments are not intended to limit the shape, material, structure, etc. of the present invention in any way, and any simple modification, equivalent change and modification made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.
Claims (10)
1. The utility model provides a novel hydraulic pressure auto-lock anticreeper, includes the connection support, and the one end of connection support is fixed at the tip of hoist lower extreme roof beam, and the vertical support curb plate of installing two relative settings of the other end of connection support, two support curb plates keep away from one side top of connection support and install the buffer support, install the anticollision buffer on the buffer support, install iron wedge connecting rod and connecting rod counter roll between two support curb plates, and iron wedge connecting rod downside bottom is rotated and is connected with swift current voussoir, its characterized in that: a hydraulic cylinder is arranged between the two supporting side plates, a hydraulic power unit for driving the hydraulic cylinder is arranged on one side of one of the supporting side plates, the hydraulic power unit comprises an oil cylinder, a motor, a gear pump and a central valve block, the bottom end of the hydraulic cylinder is rotatably connected with a first rotating shaft, the first rotating shaft penetrates between the two supporting side plates, a piston rod of the hydraulic cylinder extends upwards, the end part of the piston rod is rotatably connected with a pull rod lifting shaft, the pull rod lifting shaft is hinged with the top end of the iron wedge connecting rod through a lever component, after the motor drives the gear pump to pump oil to the hydraulic cylinder, a piston rod of the hydraulic cylinder drives the anti-slip wedge block to lift through the lever component, a central valve block of the hydraulic power unit is used for maintaining pressure for the hydraulic cylinder in a motor power-off state, and a spring limiting assembly used for controlling the opening and closing of the motor and used for placing the anti-slip wedge block under the wheel tread is arranged between the pull rod lifting shaft and the first rotating shaft.
2. The novel hydraulic self-locking anti-climbing device according to claim 1, characterized in that: in the hydraulic power unit, the motor is connected with the gear pump in a transmission manner, an oil suction pipe of the gear pump extends into the oil cylinder, a filter screen is arranged on the oil suction pipe, a pressure oil inlet, a pressure oil outlet and an oil return port are arranged on the central valve block, the pressure oil inlet is communicated with the gear pump, the pressure oil outlet is communicated with a rodless cavity of the hydraulic cylinder through the oil pump pipe, the oil return port is communicated with the oil cylinder, a normally-open electromagnetic valve, an overflow valve and a stop valve are inserted on the central valve block, the pressure oil inlet is respectively connected with an oil inlet of the overflow valve and an oil inlet of the normally-open electromagnetic valve, the oil outlet of the normally-open electromagnetic valve is connected with an inlet of the stop valve, and the oil return port is respectively connected with an oil outlet of the overflow valve and an outlet of the stop valve.
3. The novel hydraulic self-locking anti-climbing device according to claim 2, characterized in that: the spring limiting component comprises a spring cylinder, a compression spring, a spring pull rod, a limiting contact rod and a limiting switch, the spring pull rod is connected in the spring cylinder in a sliding mode, the bottom of the spring cylinder is connected to a first rotating shaft in a rotating mode, the top end of the spring pull rod extends out of the spring cylinder and then is fixedly connected with a pull rod lifting shaft, the compression spring is located in the spring cylinder, the two ends of the compression spring are respectively fixedly connected with the top wall of the spring cylinder and the bottom end of the spring pull rod, the limiting contact rod is fixedly connected onto the spring pull rod, the limiting switch is installed on the upper portion of the spring cylinder, when the limiting contact rod is in contact with a swing rod of the limiting switch, the motor is powered off, and the normally-open type electromagnetic valve is powered on for pressure maintaining.
4. The novel hydraulic self-locking anti-climbing device according to claim 2, characterized in that: the pneumatic cylinder is single-action pneumatic cylinder, has seted up the exhaust entry on the hydro-cylinder, and the exhaust entry passes through the blast pipe to be connected with the pole chamber of pneumatic cylinder.
5. The novel hydraulic self-locking anti-climbing device according to claim 1, characterized in that: the lever assembly comprises a first lever arm, a second lever arm and two second rotating shafts, the two second rotating shafts are arranged in parallel and are connected between the two supporting side plates in a rotating mode, the two second rotating shafts are in meshed transmission through two identical gears, one end of the first lever arm and one end of the second lever arm are fixed to the second rotating shafts respectively, the other end of the first lever arm is connected with the pull rod lifting shaft in a rotating mode, and the other end of the second lever arm is hinged to the top end of the iron wedge connecting rod.
6. The novel hydraulic self-locking anti-climbing device according to claim 5, characterized in that: the length of the first lever arm is equal to or greater than the length of the second lever arm.
7. The novel hydraulic self-locking anti-climbing device according to claim 3, characterized in that: the spring limiting assemblies are provided with two groups and are respectively positioned on two sides of the hydraulic cylinder.
8. The novel hydraulic self-locking anti-climbing device according to claim 5, characterized in that: and the end part of one second rotating shaft is detachably and fixedly connected with a manual release lever, and the axis of the manual release lever is perpendicular to the axis of the second rotating shaft.
9. The novel hydraulic self-locking anti-climbing device according to claim 5, characterized in that: and supporting shaft sleeves are respectively arranged between the first lever arm and the two supporting side plates, the supporting shaft sleeves are sleeved on the second rotating shaft, and the two ends of the second rotating shaft and the two ends of the connecting rod support shaft are respectively in rotating connection with bearing chambers fixedly arranged on the supporting side plates through bearings.
10. The novel hydraulic self-locking anti-creep device according to any one of claims 1 to 9, characterized in that: be connected with a plurality of back shafts between two support curb plates, the rain-proof cover of frame is installed on the top of two support curb plates, installs the rain-proof cover of motor on the support curb plate, and the rain-proof cover of motor is located the top of motor.
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| CN202110679510.6A CN113247766A (en) | 2021-06-18 | 2021-06-18 | Novel hydraulic self-locking anti-climbing device |
| CN202122719786.0U CN215048098U (en) | 2021-06-18 | 2021-11-09 | Novel hydraulic self-locking anti-climbing device |
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| CN202110679510.6A CN113247766A (en) | 2021-06-18 | 2021-06-18 | Novel hydraulic self-locking anti-climbing device |
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| CN202122719786.0U Active CN215048098U (en) | 2021-06-18 | 2021-11-09 | Novel hydraulic self-locking anti-climbing device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113734226A (en) * | 2021-09-03 | 2021-12-03 | 内蒙古上海庙矿业有限责任公司 | Monorail crane car arrester |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115611147B (en) * | 2022-09-06 | 2023-10-20 | 中铁城建集团第二工程有限公司 | Subway tunnel advertising lamp box transportation trolley |
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| CN215048098U (en) | 2021-12-07 |
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Application publication date: 20210813 |