CN221235135U - Crane power-off heavy object safe lowering control device - Google Patents
Crane power-off heavy object safe lowering control device Download PDFInfo
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- CN221235135U CN221235135U CN202323073072.2U CN202323073072U CN221235135U CN 221235135 U CN221235135 U CN 221235135U CN 202323073072 U CN202323073072 U CN 202323073072U CN 221235135 U CN221235135 U CN 221235135U
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- Control And Safety Of Cranes (AREA)
Abstract
The utility model discloses a crane outage heavy object safe lowering control device which comprises a storage battery and an electric hydraulic brake, wherein the storage battery is electrically connected with a double-function inverter, the double-function inverter is electrically connected with a first bypass control contactor and a second bypass control contactor, the electric hydraulic brake comprises a hydraulic motor and a motor push rod, the motor push rod is electrically connected with the first bypass control contactor, the hydraulic motor is electrically connected with the second bypass control contactor, the storage battery supplies power to the electric hydraulic brake, the electric hydraulic brake works so that suspended heavy objects fall, the electric hydraulic brake is powered by the storage battery under the condition of outage, so that the labor intensity of workers is reduced, and the potential safety hazards of the workers and equipment are also reduced as long as one person operates the electric hydraulic brake.
Description
Technical Field
The utility model relates to the technical field of cranes, in particular to a crane power-off heavy object safe lowering control device.
Background
At present, in the production process of the concrete pipe pile industry, the lifting of the pipe pile is generally finished by adopting a double-beam double-hook or single-beam single-hook crane. Because the national standard length of the pipe pile is from 5 to 15 meters, holes are formed in the centers of the two ends, namely, the axial central line of the pipe pile is hollow, and the lifting is carried out by directly hooking the central holes of the two ends of the pipe pile by using a lifting hook during lifting. Because the tubular pile is made of concrete, ring cracks or fractures often appear in the middle part in the lifting process, particularly the condition that a crane is suddenly powered off or powered off, the power off time is longer, the ring cracks of the tubular pile are continuously enlarged and increased, the tubular pile is easier to fracture, potential safety hazards exist, safety accidents occur, and the occurrence of the conditions in the industry is caused.
At present, a manual method is usually adopted to solve the problems, and at least three persons cooperate to complete the method. One person coordinates and commands the lower part, the other two persons pick up the brake push rods on the two lifting brakes respectively by using a crow bar, and the weight (pipe pile) slowly drops to the ground under the action of gravity.
The mode of releasing the brake lever by using the crow bar is indeed inconvenient, and has the following defects:
Firstly, the operation is troublesome and the efficiency is low, the coordination is easy to make mistakes, and the potential safety hazard is large. The crane operation is generally operated by only one person, when the power is suddenly cut off, the number of people on site is often small, more people need to be found to lower the tubular pile, the time for using is long, the operation is troublesome, the coordination of people is required, errors are easy to occur, and the safety risk is high. Secondly, the multi-point position is operated simultaneously, the weight is easy to walk the hook, and safety accidents are easy to occur. The crane lifting brake mechanism is complex, multiple persons operate at multiple points, the applied force is uneven, the hook is easy to slip, and safety accidents are caused.
Disclosure of utility model
The utility model aims to provide a crane power-off heavy object safe lowering control device so as to solve the problems in the background technology.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the control device comprises a storage battery pack and an electric hydraulic brake, wherein the storage battery pack is electrically connected with a dual-function inverter, and the dual-function inverter is electrically connected with a first bypass control contactor and a second bypass control contactor;
The double-function inverter can convert direct current into alternating current or alternating current into direct current, can convert two modes simultaneously, can provide direct current and alternating current when power is off, and can supply power for various devices;
The electric hydraulic brake comprises a hydraulic motor and a motor push rod, the motor push rod is electrically connected with the first bypass control contactor, and the hydraulic motor is electrically connected with the second bypass control contactor;
The accumulator battery supplies power to the electric hydraulic brake, and the electric hydraulic brake works to enable the suspended weight to fall, so that the weight can be safely placed on the ground only by one person operating the electric hydraulic brake.
Further, the dual-function inverter is provided with an R input end, an S input end and a T input end, the storage battery pack is electrically connected with the R input end, the S input end and the T input end, the dual-function inverter is provided with a U output end, a V output end and a W output end, the input ends of the first bypass control contactor and the second bypass control contactor are electrically connected with the U output end, the V output end and the W output end, correct circuit connection is ensured, and stable power supply can be realized when the dual-function inverter is used.
Further, the storage battery surface is equipped with the mount, the mount is connected with the insulating shell, insulating shell upper surface is equipped with the handle, uses the handle to be convenient for remove storage battery, storage battery has the protection circuit board through the wire connection, dual function dc-to-ac converter is also connected with the protection circuit board through the electric wire, protection circuit board electric connection has the mouth that charges, and when excessive pressure overflows, protection circuit board disconnection circuit protects storage battery.
Compared with the prior art, the utility model has the beneficial effects that:
(1) The electric hydraulic brake is powered by the storage battery pack under the condition of power failure, so that only one person operates the electric hydraulic brake, the labor intensity of staff is reduced, the potential safety hazards of the staff and equipment are also reduced, and the concrete pipe pile can be prevented from being broken when the concrete pipe pile is lifted.
(2) The method has the advantages that the method does not need to be matched with a plurality of persons to operate, the problem of error coordination is avoided, the falling time of the heavy object can be shortened, the heavy object is prevented from being suspended in the air for a long time, the safety accident is not easy to occur, the method can be suitable for double-beam double-trolley double-hook cranes, and can also be suitable for single-beam cranes with similar brakes, and the application range is wide.
Drawings
FIG. 1 is a schematic block diagram of the present utility model;
FIG. 2 is a schematic view of the connection between the insulating housing and the handle according to the present utility model;
fig. 3 is a schematic view of the structure of the inside of the insulating case of the present utility model.
In the figure: 1. a battery pack; 2. a dual-function inverter; 3. a first bypass control contactor; 4. a second bypass control contactor; 5. an electro-hydraulic brake; 501. a hydraulic motor; 502. a motor push rod; 6. an insulating case; 7. a handle; 8. a charging port; 9. a protective circuit board; 10. and a fixing frame.
Detailed Description
The following description of the embodiments of the present utility model 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 utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Examples:
Referring to fig. 1-3, the present utility model provides a technical solution: the utility model provides a hoist outage heavy object safety control device that descends, includes storage battery 1 and electric hydraulic brake 5, and storage battery 1 electric connection has dual-function inverter 2, and dual-function inverter 2 electric connection has first bypass control contactor 3 and second bypass control contactor 4;
The storage battery pack 1 is an independent power supply, and when the mains supply fails, the storage battery pack 1 can be used for temporarily supplying power, so that the crane can be operated to a safe state;
The electric hydraulic brake 5 comprises a hydraulic motor 501 and a motor push rod 502, the motor push rod 502 controls the braking and releasing of the crane through expansion and contraction, the motor push rod 502 is electrically connected with the first bypass control contactor 3, and the hydraulic motor 501 is electrically connected with the second bypass control contactor 4;
The battery pack 1 supplies power to the electrohydraulic brake 5, and the electrohydraulic brake 5 is operated to drop the suspended weight.
In this embodiment, as shown in fig. 1, the dual-function inverter 2 has an R input end, an S input end, and a T input end, the battery pack 1 is electrically connected with the R input end, the S input end, and the T input end, the dual-function inverter 2 has an R input end, an S input end, and a T input end, and is further connected with a three-phase ac power, the three-phase ac power and the battery pack 1 are not electrified, and the diode has a unidirectional conductive characteristic, and the three-phase ac power and the battery pack 1 can be disconnected by using the diode.
In this embodiment, as shown in fig. 1, the dual-function inverter 2 has a U output end, a V output end, and a W output end, and the input ends of the first bypass control contactor 3 and the second bypass control contactor 4 are electrically connected to the U output end, the V output end, and the W output end, so as to independently supply power to the first bypass control contactor 3 and the second bypass control contactor 4, prevent the first bypass control contactor 3 and the second bypass control contactor 4 from interfering with each other, and improve the stability of the circuit.
In this embodiment, as shown in fig. 3, a fixing frame 10 is provided on the surface of the battery pack 1, the fixing frame 10 is connected with an insulating shell 6, a handle 7 is provided on the upper surface of the insulating shell 6, and the fixing frame 10 and the insulating shell 6 cooperate to better protect the battery pack 1 and avoid the battery pack 1 from shaking.
In this embodiment, as shown in fig. 3, the storage battery 1 is connected with a protection circuit board 9 through an electric wire, the dual-function inverter 2 is also connected with the protection circuit board 9 through an electric wire, the protection circuit board 9 is electrically connected with a charging port 8, and the protection circuit board 9 is powered off during overvoltage and overcurrent to avoid the ignition of the circuit.
Specifically, when the crane is used, the lifting mechanism of the double-beam double-hook crane is in a winch mode, the lifting motor is in transmission connection with the speed reducer, the power output shaft of the speed reducer is connected with the lifting hook steel wire rope reel, the downward braking of a heavy object on the lifting hook is realized through the electric hydraulic brake 5, and the suspension of the heavy object is realized through the clamping of the brake wheel by the brake block of the electric hydraulic brake 5; when the weight is lowered, the hydraulic motor 501 is electrified to run, the motor push rod 502 drives the brake pad to loosen the brake wheel, the brake is released, and the weight on the lifting hook can be lowered under the action of gravity under the condition that the lifting motor is electrified to be lowered to run or not electrified;
When the double-beam double-hook crane is suddenly powered off, if the heavy object is safely lowered, a rated alternating current power supply is only supplied to a braking system of the double-beam double-hook crane, and the heavy object is safely controlled;
When the commercial power is used for the double-beam double-hook crane, the double-beam double-hook crane normally works, the double-beam double-hook crane ascends or descends to operate, the electric hydraulic brake 5 is electrified to operate at the same time, three-phase alternating current is directly output from the U\V\W output end without inversion from the R\S\T input end of the double-function inverter 2, the first bypass control contactor 3 and the second bypass control contactor 4 are electrified, the hydraulic motor 501 and the motor push rod 502 are controlled to work through a circuit system of the double-beam double-hook crane, when the hydraulic motor 501 and the motor push rod 502 are electrified, the electric hydraulic brake 5 is in an open state, and when the electric hydraulic brake 5 is in power failure, the weight is kept not lowered due to gravity;
When the power is off (no commercial power is supplied), the lifting motor of the double-beam double-hook crane cannot work and cannot control lifting of the heavy object, at the moment, the power of the storage battery pack 1 is inverted through the double-function inverter 2 to form three-phase alternating current, the three-phase alternating current is output from the U\V\W output end, the first bypass control contactor 3 and the second bypass control contactor 4 are powered, the first bypass control contactor 3 supplies power to the motor push rod 502, the second bypass control contactor 4 supplies power to the hydraulic motor 501, the electric hydraulic brake 5 can work, the brake wheel of the Liang Shuanggou crane is not braked, the gravity of the heavy object is utilized to naturally fall to the ground, the heavy object can be prevented from being in the air all the time when the power is off, and the heavy object is lifted more safely.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The crane outage heavy object safe lowering control device is characterized by comprising a storage battery pack (1) and an electric hydraulic brake (5), wherein the storage battery pack (1) is electrically connected with a double-function inverter (2), and the double-function inverter (2) is electrically connected with a first bypass control contactor (3) and a second bypass control contactor (4);
The electric hydraulic brake (5) comprises a hydraulic motor (501) and a motor push rod (502), the motor push rod (502) is electrically connected with the first bypass control contactor (3), and the hydraulic motor (501) is electrically connected with the second bypass control contactor (4);
The accumulator (1) supplies power to an electrohydraulic brake (5), and the electrohydraulic brake (5) is operated to drop suspended loads.
2. The crane outage weight safety lowering control device according to claim 1, wherein: the double-function inverter (2) is provided with an R input end, an S input end and a T input end, and the storage battery pack (1) is electrically connected with the R input end, the S input end and the T input end.
3. The crane outage weight safety lowering control device according to claim 2, wherein: the double-function inverter (2) is provided with a U output end, a V output end and a W output end, and the input ends of the first bypass control contactor (3) and the second bypass control contactor (4) are electrically connected with the U output end, the V output end and the W output end.
4. The crane outage weight safety lowering control device according to claim 1, wherein: the storage battery pack is characterized in that a fixing frame (10) is arranged on the surface of the storage battery pack (1), the fixing frame (10) is connected with an insulating shell (6), and a lifting handle (7) is arranged on the upper surface of the insulating shell (6).
5. The crane outage weight safety lowering control device according to claim 1, wherein: the storage battery pack (1) is connected with a protection circuit board (9) through an electric wire, the dual-function inverter (2) is also connected with the protection circuit board (9) through an electric wire, and the protection circuit board (9) is electrically connected with a charging port (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323073072.2U CN221235135U (en) | 2023-11-14 | 2023-11-14 | Crane power-off heavy object safe lowering control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323073072.2U CN221235135U (en) | 2023-11-14 | 2023-11-14 | Crane power-off heavy object safe lowering control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221235135U true CN221235135U (en) | 2024-06-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323073072.2U Active CN221235135U (en) | 2023-11-14 | 2023-11-14 | Crane power-off heavy object safe lowering control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221235135U (en) |
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2023
- 2023-11-14 CN CN202323073072.2U patent/CN221235135U/en active Active
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