CN116239023A - Load protection system of tubular pile mould handling driving - Google Patents
Load protection system of tubular pile mould handling driving Download PDFInfo
- Publication number
- CN116239023A CN116239023A CN202310508260.9A CN202310508260A CN116239023A CN 116239023 A CN116239023 A CN 116239023A CN 202310508260 A CN202310508260 A CN 202310508260A CN 116239023 A CN116239023 A CN 116239023A
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- Prior art keywords
- module
- load
- crane
- protection
- tubular pile
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C13/00—Other constructional features or details
- B66C13/16—Applications of indicating, registering, or weighing devices
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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
- B66C13/22—Control systems or devices for electric drives
- B66C13/30—Circuits for braking, traversing, or slewing motors
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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
- B66C15/00—Safety gear
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/54—Safety gear
- B66D1/58—Safety gear responsive to excess of load
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/12—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect
- B66D5/14—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes with axial effect embodying discs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/02—Crane, lift hoist, or winch brakes operating on drums, barrels, or ropes
- B66D5/24—Operating devices
- B66D5/30—Operating devices electrical
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D5/00—Braking or detent devices characterised by application to lifting or hoisting gear, e.g. for controlling the lowering of loads
- B66D5/32—Detent devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0852—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load directly responsive to abnormal temperature by using a temperature sensor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/085—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load
- H02H7/0854—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against excessive load responsive to rate of change of current, couple or speed, e.g. anti-kickback protection
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/09—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against over-voltage; against reduction of voltage; against phase interruption
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
- H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
- H02H7/08—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors
- H02H7/093—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for dynamo-electric motors against increase beyond, or decrease below, a predetermined level of rotational speed
Abstract
The invention belongs to the technical field of emergency protection, and discloses a load protection system for a tubular pile die lifting crane, which is characterized in that a load monitor module, a control module, a load triggering module and the like are arranged, wherein the load monitor module is arranged at a fixed end of a crane wire rope and used for detecting the load force of the crane wire rope, and transmitting the detected load force information to the control module, the control module is connected with the control system of the crane and used for controlling the stopping of a crane and the crane in a load state, so that the load condition of the crane can be effectively detected, the crane is protected, and the overload protection module, the overheat phase-failure protection module and the overspeed protection module are connected with the control module and used for protecting motors of the crane and the crane, and the crane system is effectively protected.
Description
Technical Field
The invention belongs to the technical field of emergency protection, and particularly relates to a load protection system of a tubular pile die lifting crane.
Background
One of the important rings in the pipe pile production line is hoisting of the pipe pile and the die, and the pipe pile or the die can be well moved only by using a crane and a hoisting tool to be matched with each other because the pipe pile is heavy. The traditional pipe pile hoisting equipment generally pulls a plurality of high-strength steel cables below a travelling crane, the lower ends of the steel cables are connected with a lifting hook, and when a hoisting mould is needed or needed, a worker hangs the lifting hook on a pipe pile or a hanging hole of the pipe pile mould and then lifts the pipe pile or the hanging hole of the pipe pile mould to move.
In order to improve the safety during hoisting, the existing travelling crane is provided with a load protection device, so that the power supply of the travelling crane can be disconnected when overload is detected, the danger caused by continuous operation is avoided, and the safety coefficient is improved. The utility model provides an overload protection bridge crane, it can lift by crane the in-process and lift by crane when transshipping, can in time cut off and lift by crane the power to will lift by crane the part card and die, in order to prevent that the heavy object whereabouts from taking place the incident or taking place to lift by crane the damage of thing, still be equipped with overload alarm function to in time carry out overload suggestion to operating personnel.
In the above patent, although the lifting power supply can be cut off in time when overload occurs and the lifting part is blocked to prevent safety accidents caused by falling of the heavy objects or damage of the lifted objects, the lifting power supply is weak in protection of a travelling system.
Disclosure of Invention
The invention aims to provide a load protection system of a tubular pile die lifting crane, which aims to solve the problems in the prior art in the background art.
In order to achieve the above purpose, the invention adopts the following technical scheme:
a load protection system for a tubular pile die handling trolley, comprising: the load monitor module is connected with the control module; the load triggering module is connected with the control module; the load monitor module is arranged at the fixed end of the travelling crane steel wire rope and used for detecting the loading force of the travelling crane steel wire rope and transmitting the detected loading force information to the control module, the control module is connected into a travelling crane control system and used for controlling the running crane and the trolley to stop under a load state, the load trigger module is controlled to lock the steel wire rope winding drum on the trolley, and the load trigger module is arranged on a brake disc of the steel wire rope winding drum; a slow-falling component connected in a traveling crane hook box and used for connecting a lifting hook, wherein the slow-falling component is used for falling the lifting hook after the trolley stops; the electric protection device comprises an overcurrent protection module, an overheat and open-phase protection module, a voltage loss and zero protection module and an overspeed protection module; the over-current protection module, the overheat and open-phase protection module and the overspeed protection module are connected with the control module and used for protecting motors of the cart and the trolley; the voltage loss and zero protection module is connected to a control system of the traveling crane and used for controlling the starting and stopping of the traveling crane.
Further, the load monitor module comprises: a sensor; a controller connected to the sensor; the elastic body of the sensor is tightly abutted against the steel wire rope and fastened through the U-shaped bolt, the sensor is connected with the controller through a four-core shielding wire, and the controller is arranged on a hand-operated door of a running vehicle or in a cab.
Further, the control module includes: a first signal receiving module connected with the controller; the signal transmission module is connected with the first microprocessor module; the signal sending module is connected with the load triggering module.
Further, the load triggering module includes: a second signal receiving module connected with the signal transmitting module; a microprocessor module II connected with the signal receiving module II and an electric push rod connected with the microprocessor module II; the electric push rod is installed on the trolley through the support, and a locking piece for locking the wire rope winding drum is connected to the electric push rod.
Further, the locking member includes: fixing the jaw; a movable jaw engaged with the fixed jaw; the fixed tooth is fixedly connected to the outer side of the brake disc, and the movable tooth is connected to the support through a guide rod and is embedded with the fixed tooth under the drive of the electric push rod.
Further, a mounting hole is formed in the surface of the support, and a linear bearing sleeved outside the guide rod is fixed in the mounting hole; the upper part of the guide rod is fixed with a connecting rod, and the electric push rod is arranged between the connecting rod and the bracket.
Further, the slow-falling assembly comprises: an internal thread sleeve fixed at the bottom of the travelling crane hook box;
the screw rod is connected in the internal thread sleeve, and the driver is connected to the upper end of the screw rod; the driver is arranged at the top of the inner side of the lifting hook box of the traveling crane, and the lifting hook is arranged at the lower end of the screw rod.
Further, the driver comprises a positive motor and a negative motor and a gearbox with a locking function, an output shaft of the positive motor is connected to a driving shaft of the gearbox, and an output shaft of the gearbox is connected with a screw rod through a connecting piece. The connector includes: a connecting pipe; the connecting rod is movably inserted into the connecting pipe; the upper end of the connecting pipe is fixed at the output shaft of the gearbox, and the lower end of the connecting rod is fixed at the upper end of the screw rod; the cross sections of the connecting pipe and the connecting rod are rectangular structures.
The invention has the technical effects and advantages that: compared with the prior art, the load protection system of the tubular pile die lifting crane provided by the invention has the following advantages:
according to the invention, the load monitor module, the control module, the load triggering module and the like are arranged, wherein the load monitor module is arranged at the fixed end of the travelling steel wire rope and used for detecting the load force of the travelling steel wire rope, and transmitting the detected load force information to the control module, the control module is connected with the control system of the travelling crane and used for controlling the stop of the travelling crane and the travelling crane in a load state, so that the load condition of the travelling crane can be effectively detected, and the overload protection module, the overheat phase-failure protection module and the overspeed protection module are connected with the control module and used for protecting the motors of the travelling crane and effectively protecting the travelling crane system.
Drawings
Fig. 1 is a block diagram of a load protection system of a tubular pile die lifting crane in an embodiment of the invention;
FIG. 2 is a schematic diagram of a driving structure according to an embodiment of the present invention;
FIG. 3 is a schematic perspective view of a locking member according to an embodiment of the present invention;
FIG. 4 is an exploded view of the locking element according to the embodiment of the present invention;
FIG. 5 is a schematic view of a structure of a drop-down assembly according to an embodiment of the present invention;
FIG. 6 is a schematic cross-sectional view of a connecting pipe according to an embodiment of the present invention;
FIG. 7 is a circuit diagram of an overspeed protection module according to an embodiment of the present invention.
In the figure: 1. an electric push rod; 2. a bracket; 3. fixing the jaw; 4. a movable jaw; 5. a guide rod; 6. a mounting hole; 7. a linear bearing; 8. a connecting rod; 9. an internal thread sleeve; 10. a screw; 11. a forward and reverse motor; 12. a gearbox; 13. a connecting pipe; 14. a connecting rod; 15. a cart; 16. a trolley; 17. a crane hook box; 18. and (5) a lifting hook.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. The specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The embodiment of the invention provides a load protection system of a tubular pile die lifting crane, which is exemplified as shown in fig. 1 and 2. The emergency protection system includes: the load trigger module is connected with the control module.
The load monitor module is arranged at the fixed end of the travelling crane steel wire rope and used for detecting the loading force of the travelling crane steel wire rope, and transmitting the detected loading force information to the control module, the control module is connected with a control system of the travelling crane and used for controlling the stop of a cart 15 and a cart 16 of the travelling crane in a load state, and controlling the load trigger module to lock the steel wire rope winding drum on the cart, and the load trigger module is arranged on a brake disc of the steel wire rope winding drum and can effectively detect the loading condition of the travelling crane and protect the travelling crane.
In addition, the specific structure and working principle of the driving control system, the cart 15 and the cart 16 are mature prior art, and will not be described herein. The general driving structure comprises: the travelling crane generally has lifting of a main hook and an auxiliary hook, and the trolley moves. The main hook is responsible for heavy load lifting, the auxiliary hook is small in lifting weight and plays an auxiliary lifting role, and small pieces are hung flexibly. The electric device mainly comprises a motor, a speed regulating resistor, a cam controller, a safety box, a protection device, an illumination device, an electric bell and other auxiliary devices. The cart is provided with two motors which are respectively arranged at two ends of the girder. The main loop of the travelling crane comprises hook head control and big and small car control.
In some embodiments, an electrical protection device connected to the load monitor module is also included, including an over-current protection module, an over-temperature and phase failure protection module, a voltage loss and zero protection module, and an overspeed protection module.
Wherein the overcurrent protection module, the overheat and open-phase protection module and the overspeed protection module are connected with the control module and used for protecting motors of the cart and the trolley, and when the current exceeding the allowable value flows in the motor, the overcurrent relay acts to stop the motor from working when the power is off.
The overcurrent protection module comprises a power supply circuit and a communication circuit, and comprises a microcontroller circuit, a current acquisition circuit, an overcurrent protection module circuit and a relay combination circuit; the power supply circuit is connected with the overcurrent protection module and is used for supplying power to the communication circuit, the microcontroller circuit, the current acquisition circuit, the overcurrent protection module circuit and the relay combination circuit respectively;
the overcurrent protection module circuit is used for responding in time when overcurrent occurs and turning off all outputs; the overcurrent protection module circuit comprises a relay control circuit, a main controller, a comparator and a current sensor, wherein the signals at the input end of the comparator are a current acquisition signal and an overcurrent reference point OCREF signal respectively, when the current acquisition signal is greater than the overcurrent reference point OCREF signal, an overcurrent protection module occurs, the signals at the output end of the comparator are turned over to trigger the relay control circuit, and all power supply loops are disconnected to realize the function of the overcurrent protection module.
The motor operation signal detection circuit is used for detecting the motor operation state by the overheat and open-phase protection module;
a current transformer for detecting the stator current of the motor; the current conversion circuit is connected with the current transformer and is used for processing signals returned by the current transformer; the central processing unit is respectively connected with the motor operation signal detection circuit and the current conversion circuit, processes information transmitted back by the motor operation signal detection circuit and the current conversion circuit, and sends out control alarm, motor power supply disconnection and switching-on signals after detecting that the motor input has the conditions of open phase, undercurrent, overcurrent or motor overheat; the control output relay is connected with the central processing unit, responds to the control signal sent by the central processing unit, controls the alarm circuit to alarm, and cuts off the motor power supply and the brake power supply; when a motor running signal is given, detecting the current of a motor stator through a current transformer, and when the current of the stator is larger than a undercurrent set value and has no other faults and reaches a set time, controlling the action of an output relay by a central processing unit, and giving a brake opening signal to control a brake to open; when the motor stops running, or other conditions not meeting the opening conditions, the central processing unit controls the output relay to act, gives a closing signal and controls the brake to close.
An overspeed protection module comprising: the input signal conditioning circuit is used for conditioning the original detection signals acquired by the sensor to form signals suitable for processing; the central processing unit is used for carrying out A/D conversion and algorithm processing on the conditioned signals; the communication interface circuit is in bidirectional communication connection with the central processing unit and is used for communication connection between the central processing unit and the outside, and the communication interface circuit comprises communication connection between the central processing unit and the outside in a direct and system bus way; and the analog quantity current output circuit is used for converting the digital signal processed by the central processing unit into corresponding analog quantity current and outputting the analog quantity current.
The voltage loss and zero protection module is connected to the control system of the travelling crane, and can automatically resume operation after the system resumes power supply when the system loses power. Zero protection can avoid automatic operation of the mechanism caused by the fact that the controller handle is not in zero position after the power is turned on.
When the zero protection in the zero protection module is started, and the zero protection is performed after the zero is set on the handle of the controller, the mechanism or all motors can be started, and the protection measure is called zero protection. The motor of the mechanism can be started, and the motor is used for protecting the voltage loss of a control power supply of the motor when the control screens of the master controller and the contactor are controlled, and consists of a zero protection contactor coil, a self-locking contact of the zero protection contactor and a zero contact of the master controller.
The step-down protection is that the total loop must be automatically cut off when the power supply is interrupted, and the total power supply cannot be switched on without manual operation when the power supply is restored. The checking method includes that when the motor of the mechanism is controlled by a control screen of a main controller and a contactor, an emergency switch is moved to release a main power contactor, a handle of the controller is moved away from a zero position, the emergency switch is closed, a starting button is pressed to enable the main power contactor to be connected, the main power can be connected, but the motor cannot be started at the same time, and the motor of the mechanism can be started only after the handle of the controller is placed at the zero position and then the handle of the controller is placed at an operating position.
The driving control system further comprises a driving variable frequency control system which consists of a 1# variable frequency control cabinet, a 2# variable frequency control cabinet and a 3# variable frequency control resistance cabinet. As shown in fig. 7, the overspeed protection module includes a control circuit, which includes upper and lower gear control switches KA1 and KA2 and second and third gear speed control switches KA3 and KA4, which are all connected to the frequency converter a1000. And a reset circuit RST, a starting unit, a fault fireproof circuit, a braking system and a host are connected to the frequency converter A1000. Wherein, the braking system is connected with the host; the brake system is composed of a small relay resistor K1 and a brake contact resistor KM1, and the brake contact resistor KM1 is controlled by the small relay resistor K1 to realize prolonged change, so that the service life of the contact is more reliable.
The control circuit is controlled by ascending and descending three-gear speed regulation, the speeds are respectively 10HZ of first gear, 25HZ of second gear and 48HZ of third gear, and the control mode adopts a PG-free vector control mode.
In some embodiments, the lifting moment is sufficient due to the travelling crane, and the phenomenon of sliding hooks is avoided. And the original travelling crane brake is provided with a multifunctional control contact of the frequency converter, when the lifting hook is controlled to ascend by controlling the brake contactor LC1D09 contactor 380V, the An Chuan A1000 frequency converter outputs control moment through parameter setting, and meanwhile, the multifunctional contact is opened to open the brake. The brake motor is controlled with 3-4 contactors LCD09, 380V. The first is driving frequency converter control. The second is control handle zero control. And thirdly, controlling the contactor by a rising and falling signal. To prevent interference, a signal controls a contactor. The 3-4 contactor main circuits are connected in series. Only when three signals work simultaneously, the brake motor can be opened, and the lifting hook is ensured to be started normally.
Further, the load monitor module includes: a sensor; a controller connected to the sensor; the elastic body of the sensor is tightly abutted against the steel wire rope and fastened through the U-shaped bolt, the sensor is connected with the controller through a four-core shielding wire, and the controller is arranged on a hand-operated door of a running vehicle or in a cab. The sensor and the controller form a lifting weight limiter, and have the functions of sound alarm, immediate alarm, cutting off the loop of a lifting motor of the crane, displaying the weight of a lifting weight and the like. When the lifting machine lifts the heavy object, the weight is transmitted to the sensor to enable the sensor to generate micro voltage change, and the micro voltage change is amplified by the instrument amplifier and then is changed into a digital signal by the high-resolution A/D converter. The digital signal is directly read by a single chip computer, and converted into a weight value after being processed. The value is compared with the rated value which reaches 110%, a pair of passive relay contact signals (normally closed) are output for cutting off the power supply of the lifting motor, and in addition, the weight value can be sent to the controller for processing according to the command of the controller to display the rated weight, and the lifting weight pre-alarm and alarm sound are displayed.
Further, the control module includes: a first signal receiving module connected with the controller; the signal transmission module is connected with the first microprocessor module; the signal sending module is connected with the load triggering module. The load monitor module is arranged at the fixed end of the travelling crane steel wire rope and used for detecting the loading force of the travelling crane steel wire rope, and transmitting the measured loading force information to the control module, and the control module is connected into the control system of the travelling crane and used for controlling the break and stop of the large car and the small car of the travelling crane under the load state.
Further, the load triggering module includes: a second signal receiving module connected with the signal transmitting module; a microprocessor module II connected with the signal receiving module II and an electric push rod 1 connected with the microprocessor module II; the electric push rod 1 is arranged on the trolley through the bracket 2, and a locking piece for locking the wire rope winding drum is connected to the electric push rod. The electric push rod 1 drives the locking piece to lock the steel wire rope winding drum, so that the pressure of the steel wire rope winding drum is reduced.
As shown in fig. 3 and 4, the locking member includes: a fixed jaw 3, a movable jaw 4 butted with the fixed jaw 3; the fixed jaw 3 is fixedly connected to the outer side of the brake disc, and the movable jaw 4 is connected to the support 2 through a guide rod 5 and is driven by the electric push rod 1 to be separated from the fixed jaw 3. When load occurs, the electric push rod 1 pushes the movable jaw 4 to drive the movable jaw 4 to be meshed with the fixed jaw 3, and the brake disc can be locked by the limit of the guide rod 5, so that the winding drum is locked. In addition, the guide rods 5 can be provided with a plurality of groups, and connecting rods 8 are fixed on the plurality of groups of the guide rods 5, and the electric push rod 1 is arranged between the connecting rods 8 and the bracket 2.
In order to improve stability of the guide rod 5, in this embodiment, a mounting hole 6 is formed on the surface of the bracket 2, and a linear bearing 7 sleeved outside the guide rod 5 is fixed inside the mounting hole 6, so that movement of the guide rod 5 is facilitated, and the position of the guide rod can be limited.
In this embodiment, in order to put down the suspended object in the case of power failure, a slow-falling component for connecting the hanging hook is connected in the crane hook box, and is used for falling down the hanging hook after the trolley stops.
As shown in fig. 5 and 6, the drop-down assembly includes: an internal thread sleeve 9 fixed at the bottom of the travelling crane hook box 17; a screw 10 connected to the female screw sleeve 9, and a driver connected to the upper end of the screw 10; wherein the driver is installed at the inner top of the traveling crane hook box, and the hooks 18 are installed at the lower ends of the screws 10. The driver comprises a positive and negative motor 11 and a gearbox 12 with a locking function, wherein an output shaft of the positive and negative motor 11 is connected to a driving shaft of the gearbox 12, and an output shaft of the gearbox 12 is connected with a screw rod 10 through a connecting piece.
The normal state positive and negative motor 11 can not be connected with the power supply, so that cable damage is avoided, and the external power supply can be connected when needed. It is stated that the screw 10 and the internal thread sleeve 9 can be in a locked state without random loosening due to the action of gravity, so that the falling of the lifting hook is avoided. Under the condition of power failure during running, the screw rod 10 is driven to rotate by the positive and negative motor 11, so that the suspended object is conveniently put down.
The connector includes: the connecting pipe 13 is movably inserted into the connecting rod 14 inside the connecting pipe 13; wherein, the upper end of the connecting pipe 13 is fixed on the output shaft of the gearbox 12, and the lower end of the connecting rod 14 is fixed on the upper end of the screw 10; the cross sections of the connecting pipe 13 and the connecting rod 14 are rectangular structures. Through the setting of connecting pipe 13 and connecting rod 14, can make screw rod 10 can reciprocate in the pivoted to be convenient for put down the suspended solid, avoid suspended solid unsettled for a long time, the protection driving that can be better.
Finally, it should be noted that: the foregoing description is only illustrative of the preferred embodiments of the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present invention.
Claims (10)
1. The utility model provides a load protection system of tubular pile mould handling driving which characterized in that includes: a load monitor module; a control module connected to the load monitor module; the load triggering module is connected with the control module; the electric protection device comprises an overcurrent protection module, an overheat and open-phase protection module, a voltage loss and zero protection module and an overspeed protection module; the over-current protection module, the overheat and open-phase protection module and the overspeed protection module are connected with the control module and used for protecting motors of the cart and the trolley; the voltage loss and zero protection module is connected to a control system of the traveling crane and used for controlling the starting and stopping of the traveling crane.
2. The load protection system of the tubular pile die lifting crane according to claim 1, wherein the load monitor module is arranged at the fixed end of a crane wire rope and used for detecting the load force of the crane wire rope and transmitting the detected load force information to the control module, the control module is connected with the control system of the crane and used for controlling the stopping of a crane and a trolley of the crane in a load state and controlling the load trigger module to lock a wire rope drum on the trolley, and the load trigger module is arranged on a brake disc of the wire rope drum; and the slow-falling component is connected in the traveling crane hook box and used for connecting a lifting hook, and the slow-falling component is used for falling the lifting hook after the trolley stops.
3. The load protection system of a tubular pile die handling trolley of claim 2, wherein the load monitor module comprises: a sensor; a controller connected to the sensor; the elastic body of the sensor is tightly abutted against the steel wire rope and fastened through the U-shaped bolt, the sensor is connected with the controller through a four-core shielding wire, and the controller is arranged on a hand-operated door of a running vehicle or in a cab.
4. A load protection system for a tubular pile die handling trolley according to claim 3, wherein the control module comprises: a first signal receiving module connected with the controller; the signal transmission module is connected with the first microprocessor module; the signal sending module is connected with the load triggering module.
5. The load protection system of a tubular pile die lifting crane of claim 4, wherein: the load triggering module comprises: a second signal receiving module connected with the signal transmitting module; a microprocessor module II connected with the signal receiving module II and an electric push rod connected with the microprocessor module II; the electric push rod is installed on the trolley through the support, and a locking piece for locking the wire rope winding drum is connected to the electric push rod.
6. The load protection system of a tubular pile die handling trolley of claim 5, wherein the locking member comprises: fixing the jaw; a movable jaw engaged with the fixed jaw; the fixed tooth is fixedly connected to the outer side of the brake disc, and the movable tooth is connected to the support through a guide rod and is embedded with the fixed tooth under the drive of the electric push rod.
7. The load protection system of a tubular pile die lifting crane of claim 6, wherein: the surface of the bracket is provided with a mounting hole, and a linear bearing sleeved outside the guide rod is fixed in the mounting hole; the upper part of the guide rod is fixed with a connecting rod, and the electric push rod is arranged between the connecting rod and the bracket.
8. The load protection system of a tubular pile die handling trolley of claim 2, wherein the drop down assembly comprises: an internal thread sleeve fixed at the bottom of the travelling crane hook box; the screw rod is connected in the internal thread sleeve, and the driver is connected to the upper end of the screw rod; the driver is arranged at the top of the inner side of the lifting hook box of the traveling crane, and the lifting hook is arranged at the lower end of the screw rod.
9. The load protection system of the tubular pile die lifting crane according to claim 8, wherein the driver comprises a positive motor and a negative motor and a gearbox with a locking function, an output shaft of the positive motor is connected to a driving shaft of the gearbox, and an output shaft of the gearbox is connected with a screw through a connecting piece.
10. The load protection system of a tubular pile die handling trolley of claim 9, wherein the connector comprises: a connecting pipe; the connecting rod is movably inserted into the connecting pipe; the upper end of the connecting pipe is fixed at the output shaft of the gearbox, and the lower end of the connecting rod is fixed at the upper end of the screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310508260.9A CN116239023A (en) | 2023-05-08 | 2023-05-08 | Load protection system of tubular pile mould handling driving |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310508260.9A CN116239023A (en) | 2023-05-08 | 2023-05-08 | Load protection system of tubular pile mould handling driving |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116239023A true CN116239023A (en) | 2023-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310508260.9A Pending CN116239023A (en) | 2023-05-08 | 2023-05-08 | Load protection system of tubular pile mould handling driving |
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| CN (1) | CN116239023A (en) |
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