CN211310616U - Overload alarm protector for crane - Google Patents
Overload alarm protector for crane Download PDFInfo
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- CN211310616U CN211310616U CN201921517110.XU CN201921517110U CN211310616U CN 211310616 U CN211310616 U CN 211310616U CN 201921517110 U CN201921517110 U CN 201921517110U CN 211310616 U CN211310616 U CN 211310616U
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- connecting device
- hanger
- wire rope
- crane
- hoist
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Abstract
The utility model provides an overweight warning protection device of hoist belongs to the hoist field, a serial communication port, including wire rope, hoist connecting device, last wire rope connecting hole, the wire rope connector, the weight monitor, signal transmitter, the display screen of being provided with of hoist connecting device, through the real-time measurement to jack-up goods weight, report to the police when overweight to protective apparatus safety and engineering personnel's personal safety. The utility model has the characteristics of simple structure, convenient to use, easy to maintain, application scope extensively etc.
Description
Technical Field
The utility model relates to the hoist field particularly, relates to an overweight warning protection device of hoist.
Background
The crane refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range. Also known as crown blocks, navigation cranes and cranes. The bridge crane is a hoisting device which is transversely arranged above workshops, warehouses and stockyards to hoist materials. Since its two ends are seated on a tall concrete column or a metal bracket, it is shaped like a bridge. The bridge frame of the bridge crane runs longitudinally along the rails laid on the elevated frames at two sides, so that the space below the bridge frame can be fully utilized to hoist materials without being hindered by ground equipment. The lifting machine has the widest application range and the largest quantity.
The hoisting equipment has the working characteristics of intermittent movement, namely corresponding mechanisms for taking materials, transporting, unloading and the like in one working cycle work alternately, so that the development and the use of the crane in the market are more and more extensive in order to facilitate the engineering operation activities of engineering personnel.
Along with the development of the technology, the structure and the functions of the crane are more and more perfect, technicians pay more attention to the safety problem of equipment on the basis of meeting working requirements, and the potential safety hazard is eliminated starting from details. Although the technical personnel have made many researches in the field and achieved a series of results, a lot of potential safety hazards still exist in the use process of the crane. In the actual use, the staff often can not weigh the weight of the heavy object in advance for convenient operation, when the weight of the heavy object is greater than the weight limit that wire rope can bear or the traction force limit of hoist engine, can lead to the bursting apart of wire rope or the destruction of hoist engine, seriously influences the safety of engineering, brings very big hidden danger to staff's personal safety.
In order to solve the problem, technicians explore a plurality of weighing systems and alarm systems to provide corresponding solutions, and a Chinese patent CN201520705787.1 discloses a novel portal crane weighing system which comprises a gantry crane PLC controller, a lifting frequency converter, a switching frequency converter, a variable amplitude frequency converter, a rotary frequency converter I and a rotary frequency converter II, a lifting motor, a switching motor, a variable amplitude motor, a rotary motor I and a rotary motor II and an overweight alarm device; the lifting frequency converter transmits lifting parameters of a lifting motor acquired in real time to a gantry crane PLC controller; the switching frequency converter transmits switching parameters of a switching motor acquired in real time to a PLC (programmable logic controller) of the gantry crane; a communication module and a weighing processing module are arranged in the gantry crane PLC controller; the communication module is used for receiving and transmitting the lifting parameters and the opening and closing parameters to the weighing processing module; the weighing processing module processes the lifting parameters and the opening and closing parameters to obtain load weight and an overweight signal, and controls the overweight alarm device to start and the lifting motor and the opening and closing motor to stop. The technical scheme better solves the problems of detection and alarm of overweight of the crane, but has certain limitation in application because the technical scheme has relatively complex equipment and higher requirement on crane types and is not suitable for some types of cranes, such as tower cranes and the like.
Therefore, it is very important to obtain an overweight alarm protection suitable for most types of cranes, and the inventor of the utility model also provides a technical solution with universality after a series of exploration.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a can send alarm signal's device when the overweight goods is lifted by crane for the hoist to the safety of engineering equipment such as protection hoist ensures engineering personnel's personal safety, guarantees overweight alarm protection device simultaneously and can have the universality, can extensively apply to various types of hoisting equipment.
Based on above purpose, the utility model provides an overweight warning protection device of hoist, including wire rope 1, hoist connecting device 2, 2 upper ends of hoist connecting device are provided with wire rope connecting hole 4, wire rope 1 is connected to through wire rope connecting hole 4 on the hoist connecting device 2. The center of the hanger connecting device 2 is provided with a through hole A with the diameter a and a slotted hole B with the upper end opening diameter B, wherein phi a is less than phi B, and a detachable hanger connector 5 is arranged in the slotted hole B of the hanger connecting device 2. The upper end of the lifting appliance penetrates through the through hole A to be connected to the lifting appliance connector 5, the lifting appliance connector 5 is arranged in the slotted hole B, and the lifting appliance and the steel wire rope 1 which are connected through the lifting appliance connecting device 2 are connected more closely, meanwhile, due to the limitation of the lifting appliance connector 5 and the through hole A, the friction of the lifting appliance and the steel wire rope 1 in the using process in the traditional connecting mode is avoided, the abrasion of the steel wire rope 1 is reduced, and a good protection effect is achieved.
Further, a weight monitor 6 is provided in the hanger connecting device 2, and the weight monitor 6 is disposed in the slot B of the hanger connecting device 2 and below the hanger connector 5. When a load is suspended from the spreader, the weight monitor 6 placed under the spreader connector 5 can detect the weight of the load in real time due to the pressure applied by the spreader connector 5.
Further, a signal emitter 3 is arranged on the hanger connecting device 2, and the signal emitter 3 is arranged on the outer surface of the hanger connecting device 3 and connected with the weight monitor 6. The signal emitter 3 can convert the electric signal from the weight monitor 6 into a digital signal in real time and send the digital signal to a digital display screen of a crane cab, an operator can visually observe the weight of a heavy object lifted by the crane, when the weight exceeds the lifting limit of the crane, an alarm is given out, and the operator stops lifting operation after receiving the alarm.
Further, the signal emitter 3 is an infrared signal emitter or an ultrasonic signal emitter.
Further, a display screen 7 is arranged on the lifting appliance connecting device 2, and the display screen 7 is installed on the outer surface of the lifting appliance connecting device 2. The display screen attaches on hoist connecting device 2, the weight of the goods of lifting by crane of direct display, and the staff who is responsible for hanging the heavy object can directly read the weight of the goods of lifting by crane from the display screen, and after overweight, the staff can make timely adjustment, changes the weight of the goods of lifting by crane.
Furthermore, the display 7 is a more power-saving LCD display.
The utility model discloses a directly set up weight detector 6, signal transmitter, display screen 7 etc. on hoist connecting device 3 for just can realize detecting the weight of jack-up goods and reporting to the police to overweight through the hoist connecting device 2 that directly uses corresponding model, can extensively be applicable to most types of hoist, have characteristics such as simple structure, convenient to use, easy to maintain, application scope extensively.
Drawings
Fig. 1 is a schematic structural diagram of an overweight alarm protection device of a crane, fig. 2 is a top view of a slotted hole, and fig. 3 is a schematic three-dimensional structural diagram of a through hole A and a slotted hole B.
Wherein 1, steel wire ropes; 2. a spreader connection device; 3. a signal transmitter; 4. connecting holes for steel wire ropes; 5. a hanger connector; 6. a weight monitor; 7. a display screen.
Detailed Description
In order to further describe the present invention in more detail, the present invention is described in detail by the following embodiments.
Example 1
An overweight alarm protection device of a crane comprises a steel wire rope 1 and a hanger connecting device 2, wherein the upper end of the hanger connecting device 2 is provided with a steel wire rope connecting hole 4, and the steel wire rope 1 is connected to the hanger connecting device 2 through the steel wire rope connecting hole 4; the diameter of the hanger connecting device 2 is 300mm, and the center of the hanger connecting device is provided with a through hole A with the diameter of 80mm and a slotted hole B with the upper end open diameter of 150 mm; a detachable hanger connector 5 is arranged in the slotted hole B of the hanger connecting device 2, and the connection part of the upper end of the hanger penetrates through the through hole A to be connected with the hanger connector 5; a weight monitor 6 is arranged in the hanger connecting device 2, and the weight monitor 6 is also arranged in the slotted hole B of the hanger connecting device 2 and below the hanger connector 5; the hanger connecting device 2 is provided with an infrared signal emitter 3, and the signal emitter 3 is arranged on the outer surface of the hanger connecting device 3 and is connected with a weight monitor 6 through a lead.
In the implementation process of the embodiment, when the crane performs the hoisting operation, after the hoisting goods are suspended on the lifting appliance and lifted for a short distance, the lifting goods can drive the lifting appliance connector 5 to apply pressure to the weight monitor 6 under the action of gravity, the weight monitor 6 measures the weight of the lifting goods according to the pressure, the signal is transmitted to the infrared signal transmitter 3 in an electric signal mode, the infrared signal transmitter 3 converts the secondary electric signal into a digital signal and transmits the digital signal to a digital display screen of a cab, an operator can read the weight of the lifted goods from the display screen in real time, when the weight of the lifted goods exceeds the lifting limit of the crane, and an alarm is sent out in a cab to remind an operator to stop the hoisting operation, so that the weight of the hoisted goods is reduced, and when the weight is within the hoisting range, the hoisting operation is carried out.
Example 2
An overweight alarm protection device of a crane comprises a steel wire rope 1 and a hanger connecting device 2, wherein the upper end of the hanger connecting device 2 is provided with a steel wire rope connecting hole 4, and the steel wire rope 1 is connected to the hanger connecting device 2 through the steel wire rope connecting hole 4; the diameter of the hanger connecting device 2 is 380mm, and the center of the hanger connecting device is provided with a through hole A which is vertically penetrated and has the diameter of 100mm and a slotted hole B of which the upper end is opened and has the diameter of 180 mm; a detachable hanger connector 5 is arranged in the slotted hole B of the hanger connecting device 2, and the connection part of the upper end of the hanger penetrates through the through hole A to be connected with the hanger connector 5; a weight monitor 6 is arranged in the hanger connecting device 2, and the weight monitor 6 is also arranged in the slotted hole B of the hanger connecting device 2 and below the hanger connector 5; the hanger connecting device 2 is provided with an infrared signal emitter 3, and the infrared signal emitter 3 is arranged on the outer surface of the hanger connecting device 3 and is connected with a weight monitor 6 through a lead; the lifting appliance connecting device 2 is provided with an LCD display screen 7, and the LCD display screen 7 is installed on the outer surface of the lifting appliance connecting device 2.
In the implementation process of this embodiment, be different from embodiment 1, increased a LCD display screen that is located 2 surface of hoist connecting device in this embodiment, this display screen is after the staff hangs the jack-up goods on the hoist, and after the jack-up goods lifted its short distance, the weight of this jack-up goods is shown, and after the weight of jack-up goods is overweight, the operating personnel of driver's cabin put down the jack-up goods, and the staff is timely adjusts the jack-up goods, lifts by crane the operation once more after the adjustment. Therefore, the working efficiency of the hoisting operation can be improved, and the work of workers and people is facilitated; in addition, the sizes of the hanger connecting device 2, the through hole A and the slotted hole B are also changed, so that the hanger connecting device is suitable for different working environments, the sizes in all the embodiments are not further limited, and the hanger connecting device can have other different sizes according to different working environments.
Example 3
An overweight alarm protection device of a crane comprises a steel wire rope 1 and a hanger connecting device 2, wherein the upper end of the hanger connecting device 2 is provided with a steel wire rope connecting hole 4, and the steel wire rope 1 is connected to the hanger connecting device 2 through the steel wire rope connecting hole 4; the diameter of the hanger connecting device 2 is 380mm, and the center of the hanger connecting device is provided with a through hole A which is vertically penetrated and has the diameter of 100mm and a slotted hole B of which the upper end is opened and has the diameter of 180 mm; a detachable hanger connector 5 is arranged in the slotted hole B of the hanger connecting device 2, and the connection part of the upper end of the hanger penetrates through the through hole A to be connected with the hanger connector 5; a weight monitor 6 is arranged in the hanger connecting device 2, and the weight monitor 6 is also arranged in the slotted hole B of the hanger connecting device 2 and below the hanger connector 5; the lifting appliance connecting device 2 is provided with an ultrasonic signal transmitter 3, and the ultrasonic signal transmitter 3 is arranged on the outer surface of the lifting appliance connecting device 3 and is connected with a weight monitor 6 through a lead; the hanger connecting device 2 is provided with an LCD display screen 7, and the LCD display screen 7 is arranged on the outer surface of the hanger connecting device 2; and a shell is sleeved outside the lifting appliance connecting device 2.
In the implementation process of the embodiment, different from embodiment 2, a shell is added outside the hanger connecting device 2 in the embodiment, the shell can be made of plastics, soft silica gel, aluminum and the like, and when the weather of rain and snow occurs, the shell can play a role in keeping off rain, so that the damage of the crane overweight alarm protection device caused by the erosion of rain is avoided; secondly, in the present embodiment, the type of the signal emitter 3 is replaced by infrared, and ultrasonic waves are more stable and wider in coverage area compared to infrared, so that the effect is relatively better in the using process.
Claims (2)
1. The crane overweight alarm protection device is characterized by comprising a steel wire rope (1) and a lifting appliance connecting device (2), wherein the upper end of the lifting appliance connecting device (2) is provided with a steel wire rope connecting hole (4), and the steel wire rope (1) is connected to the lifting appliance connecting device (2) through the steel wire rope connecting hole (4);
a through hole A with the diameter of a and a slotted hole B with the open diameter of B are arranged at the center of the hanger connecting device (2), wherein φ a is less than φ B, and a detachable hanger connector (5) is arranged in the slotted hole B of the hanger connecting device (2);
a weight monitor (6) is arranged in the hanger connecting device (2), and the weight monitor (6) is arranged in a slotted hole B of the hanger connecting device (2) and below the hanger connector (5);
the lifting appliance connecting device (2) is provided with a signal transmitter (3), and the signal transmitter (3) is installed on the outer surface of the lifting appliance connecting device (2) and is connected with the weight monitor (6).
2. A crane overload alarm protection device according to claim 1, wherein a display screen (7) is arranged on the spreader attachment means (2), and the display screen (7) is mounted on the outer surface of the spreader attachment means (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921517110.XU CN211310616U (en) | 2019-09-12 | 2019-09-12 | Overload alarm protector for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921517110.XU CN211310616U (en) | 2019-09-12 | 2019-09-12 | Overload alarm protector for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211310616U true CN211310616U (en) | 2020-08-21 |
Family
ID=72076216
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921517110.XU Active CN211310616U (en) | 2019-09-12 | 2019-09-12 | Overload alarm protector for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211310616U (en) |
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2019
- 2019-09-12 CN CN201921517110.XU patent/CN211310616U/en active Active
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