Electric hoist cable towing device and method

Abstract

The invention discloses an electric hoist cable towing device and method, comprising a suspension beam, a plurality of electric hoists, a slideway and a plurality of insulating fixed blocks, wherein the suspension beam is suspended and fixed on a top plate of a hydraulic support by an anchor cable, the plurality of electric hoists are all suspended on the suspension beam, the slideway is arranged relatively parallel to the suspension beam, one electric hoist corresponds to one slideway, the plurality of insulating fixed blocks are fixedly connected to form a fixing device by first steel wire ropes at intervals, the fixing device is located on the slideway and is slidably connected to the slideway, one end of the fixing device close to the electric hoist is fixedly connected to the electric hoist by a second steel wire rope, an electrical control box is connected to the head end of the cable, the cable is tied to the plurality of insulating fixed blocks in intervals and sections, the tail end of the cable is wound around the second steel wire rope and is connected to the power supply of the electric hoist; the invention has the advantage that safety accidents such as leakage and electric shock can be avoided during the cable towing process.

Description

Technical Field

[0001] The present invention relates to the field of coal mine construction, and more particularly to an electric hoist cable towing device and method. Background Art

[0002] Electric hoist is a special lifting equipment, installed on the overhead crane and gantry crane. It has the characteristics of small size, light weight, simple operation and convenient use. It is used in industrial and mining enterprises, warehouses, docks and other places. The electric hoist has a compact structure, and the electric hoist with the motor axis perpendicular to the drum axis adopts a worm gear transmission device.

[0003] The existing electric hoist adopts a handheld wired controller for operation during the initial installation design, without considering the layout of the power cable and the control cable. As a result, during use, the power cable and the control cable must be dragged by a dedicated person as the electric hoist moves. Due to the accumulation of water and the narrow space at the maintenance point, it is easy for the power cable to be dragged in the water, which may cause safety accidents such as leakage and electric shock. Secondly, it is easy to cause the power cable to be squeezed and damaged, causing safety accidents such as leakage and electric shock.

[0004] Chinese patent announcement number CN202138961U discloses a split structure of an electric hoist and its electrical control system, which comprises an electric hoist and an electrical control box connected to the electric hoist through a towing cable, the electrical control box is arranged on a maintenance platform or the ground through a control box bracket, and the towing cable is suspended on a steel cable set tight along an I-beam track through a pulley; one end of the steel cable is fixed to the front end of the I-beam track, and the other end is fixed to the end of the I-beam track, and the steel cable is tightened by a basket bolt. The utility model belongs to the modification of the existing setting mode of the electric hoist and its electrical control system, and the advantages after the modification are: saving manpower and time resources; facilitating timely maintenance, reducing the difficulty of operation, and ensuring the life safety of maintenance personnel. It is mainly a modification of the setting mode of the electric hoist and its electrical control system. There is no electric hoist towing cable device, which cannot avoid safety accidents such as leakage and electric shock caused by the power cable being dragged in the accumulated water or the power cable being squeezed and damaged. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the prior art lacks an electric hoist cable towing device and method and cannot avoid safety accidents such as leakage and electric shock.

[0006] The present invention solves the above-mentioned technical problems through the following technical means: an electric hoist towing device, comprising a suspension beam, a plurality of electric hoists, a slideway and a plurality of insulating fixed blocks, the suspension beam is fixed on the top plate of the hydraulic support chamber by an anchor cable, the plurality of electric hoists are all suspended on the suspension beam, the slideway is arranged relatively parallel to the suspension beam, one electric hoist corresponds to a slideway, the plurality of insulating fixed blocks are fixedly connected to form a fixing device at intervals through a first steel wire rope, the fixing device is located on the slideway and is slidably connected to the slideway, one end of the fixing device close to the electric hoist is fixedly connected to the electric hoist through a second steel wire rope, an electrical control box is connected to the head end of the cable, the cable is tied to the plurality of insulating fixed blocks in sections at intervals, the tail end of the cable is wound around the second steel wire rope and connected to the power supply of the electric hoist.

[0007] The present invention binds the cables of the electric hoist on the several insulating fixed blocks in sections at intervals, drags the electric hoist, and the electric hoist slides on the suspension beam, driving the insulating fixed blocks connected to it to move. The insulating fixed blocks slide on the slideway in the movement direction of the electric hoist, driving other insulating fixed blocks fixedly connected to it at intervals to slide on the slideway in the movement direction of the electric hoist, and move with the insulating fixed blocks, thereby realizing the overall movement of the cables. The cables are suspended at the position of the slideway and will not be dragged into accumulated water or squeezed and damaged by the power cable, thereby avoiding the occurrence of safety accidents such as leakage and electric shock.

[0008] Preferably, the electric hoist towing cable device also includes a plurality of motors and an electric hoist control circuit, the electric hoist control circuit includes a plurality of relays, an emergency stop relay, a wireless transmitting device and a wireless receiving device, the electric hoist is electrically connected to the plurality of motors, each motor is individually connected to a contact of a relay, one end of the contact of the relay is connected to the output end of the wireless receiving device through a coil, the other end of the contact of the relay is connected to the remote control power supply through the normally open contact of the emergency stop relay, and the wireless transmitting device is communicatively connected to the wireless receiving device.

[0009] Preferably, the wireless transmitting device and the wireless receiving device are F21-E1B wireless control devices.

[0010] Preferably, each of the electric hoists includes an electric hoist control circuit, and the frequency of the wireless control device in each electric hoist control circuit is different.

[0011] Preferably, the electrical control box is a BJX explosion-proof junction box.

[0012] Preferably, the insulating fixed block is an insulating porcelain bottle, the slideway is a steel wire rail, and a plurality of insulating porcelain bottles are fixedly connected to form a fixing device at intervals by a first steel wire rope. The fixing device is located on the slideway, and the steel wire rail passes through the through holes in the centers of a plurality of insulating porcelain bottles in sequence. The insulating porcelain bottles are slidably connected to the slideway, and the insulating porcelain bottle at one end of the fixing device close to the electric hoist is fixedly connected to the electric hoist by a second steel wire rope.

[0013] Preferably, the slideway and the suspension beam are arranged relatively parallel to each other with a distance between them, and the slideway and the suspension beam are located in the same plane.

[0014] Preferably, the slideway and the suspension beam are arranged relatively parallel and there is a distance between the slideway and the suspension beam, and the slideway and the suspension beam are located in different planes.

[0015] The present invention also provides a method for an electric hoist towing cable device, the method comprising: dragging the electric hoist, the electric hoist slides on the suspension beam, driving the insulating fixed block connected to it to move, the insulating fixed block slides on the slideway in the direction of movement of the electric hoist, driving other insulating fixed blocks fixedly connected to it at intervals to slide on the slideway in the direction of movement of the electric hoist, and the cables are tied to the several insulating fixed blocks in intervals and sections, and move with the insulating fixed blocks.

[0016] The advantages of the present invention are:

[0017] (1) The present invention achieves overall movement of the cable by binding the cable of the electric hoist to the plurality of insulating fixed blocks at intervals and segments, dragging the electric hoist, causing the electric hoist to slide on the suspension beam, driving the insulating fixed block connected thereto to move, and the insulating fixed block slides on the slideway in the direction of movement of the electric hoist, driving other insulating fixed blocks fixedly connected thereto at intervals to slide on the slideway in the direction of movement of the electric hoist, and moving with the insulating fixed blocks, thereby achieving overall movement of the cable. The cable is suspended at the position of the slideway, and will not be dragged into accumulated water or squeezed and damaged by the power cable, thereby avoiding safety accidents such as leakage and electric shock.

[0018] (2) In the prior art, the cables are too close to the hoisting object due to line constraints, which poses a certain safety hazard to the operator. In the present invention, the cables are tied to the insulating fixing block and the insulating fixing block is on the slide. The operator does not need to drag the cables near the hoisting object, thus avoiding safety hazards.

[0019] (3) The present invention controls the electric hoist through a wireless control device, so that the operator and other maintenance personnel will not interfere with each other during work, thereby improving labor efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic structural diagram of an electric hoist towing cable device disclosed in an embodiment of the present invention;

[0021] Figure 2 The present invention is a schematic diagram of an electric hoist control circuit in an electric hoist towing cable device disclosed in an embodiment of the present invention. DETAILED DESCRIPTION

[0022] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in combination with the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0023] like Figure 1 As shown, an electric hoist towing cable device includes a suspension beam 1, a plurality of electric hoists 2, a slideway 3 and a plurality of insulating fixed blocks 4. The suspension beam 1 is suspended and fixed on the top plate (not shown) of the hydraulic support chamber by an anchor cable (not shown in the figure), the plurality of electric hoists 2 are all suspended on the suspension beam 1, the slideway 3 is arranged relatively parallel to the suspension beam 1, and one electric hoist 2 corresponds to one slideway 3. The plurality of insulating fixed blocks 4 are fixedly connected to form a fixing device by a first steel wire rope 5 at intervals, the fixing device is located on the slideway 3 and is slidably connected to the slideway 3, and one end of the fixing device close to the electric hoist 2 is fixedly connected to the electric hoist 2 by a second steel wire rope (not shown in the figure), and the electrical control box is connected to the head end of the cable 6, and the cable 6 is tied to the plurality of insulating fixed blocks 4 at intervals and sections, and the tail end of the cable 6 is wound on the second steel wire rope and connected to the power supply of the electric hoist 2. The electrical control box is a BJX explosion-proof junction box. Both ends of the slideway 3 are fixed on the support beam 7, and the support beam 7 is perpendicular to the top plate of the hydraulic support chamber.

[0024] In the embodiment of the present invention, the insulating fixing block 4 is an insulating porcelain bottle, but is not limited to an insulating porcelain bottle, as long as it is made of insulating material and can fix the cable 6 and can slide on the slide 3. The slide 3 is a steel wire rail but is not limited to a steel wire rail, as long as the insulating fixing block 4 can slide on it, for example, the insulating fixing block 4 is an insulating porcelain bottle, the insulating porcelain bottle is an empty cylinder with a through hole in the center, the steel wire rail passes through the through hole in the center of the insulating porcelain bottle, the insulating porcelain bottle is suspended on the steel wire rail and is slidably connected to the steel wire rail, the slide 3 can also be a track with a groove, the insulating fixing block 4 is a structure with a protrusion, and the protrusion of the insulating fixing block 4 is snapped into the groove of the slide 3, so that the insulating fixing block 4 can slide on the slide 3. In the embodiment of the present invention, there are two electric hoists 2 and two corresponding slideways 3. Taking a group of electric hoists 2 and slideways 3 as an example, the first steel wire rope 5 has strength and rigidity, and the outer side surface of each insulating porcelain bottle is fixedly connected to the outer side surface of the adjacent insulating porcelain bottle by a first steel wire rope 5. The fixing method can be that one end of the first steel wire rope 5 is wrapped with a vise around the outer side surface of an insulating porcelain bottle for one or more turns, and the other end of the first steel wire rope 5 is wrapped with a vise around the outer side surface of an insulating porcelain bottle adjacent to the insulating porcelain bottle for one or more turns. In this way, two adjacent insulating porcelain bottles are fixed by the first steel wire rope 5, and all insulating porcelain bottles are fixed in this way. The connection between every two insulating porcelain bottles requires a first steel wire rope 5. Several insulating porcelain bottles are fixedly connected to form a fixing device through the first steel wire rope 5 at intervals. All insulating porcelain bottles are connected and fixed in series to achieve one-to-many, and one insulating porcelain bottle is dragged to drive multiple insulating porcelain bottles. The fixing device is located on one of the slideways 3, and the steel wire rail passes through the through holes in the centers of several insulating porcelain bottles in turn. The insulating porcelain bottle is slidably connected to the slideway 3, and one end of the fixing device close to the electric hoist 2 The insulating porcelain bottle is fixedly connected to the electric hoist 2 through a second steel wire rope, and the second steel wire rope also has strength and rigidity. One end of the second steel wire rope is wound around the electric hoist 2 with a vise, and the other end of the second steel wire rope is wound around the outer side of the insulating porcelain bottle near one end of the electric hoist 2 with a vise for one or more turns. The electric hoist 2 maintains a certain distance from the fixing device, so that during the movement of the electric hoist 2, since the electrical control box is connected to the head end of the cable 6, the cable 6 is tied to the several insulating porcelain bottles in sections at intervals, that is, the cable 6 is tied in sections at intervals. On the fixing device, the tail end of the cable 6 is wound around the second steel wire rope and connected to the power supply of the electric hoist 2, so the electric hoist 2 drives the second steel wire rope to move and thereby drives the fixing device to move, so that the cable 6 tied to the second steel wire rope and the fixing device also moves with the movement of the electric hoist 2. During the movement, the cable 6 has been tied and fixed to the second steel wire rope and the fixing device, and will not be hard dragged and will not be directly piled on the ground. It will not be dragged into accumulated water or the power cable 6 will be squeezed and damaged, thereby avoiding safety accidents such as leakage and electric shock.

[0025] The present invention does not limit the relative height of the slideway 3 and the suspension beam 1, that is, whether they are in the same plane does not affect the operation of the device of the present application, as long as the slideway 3 and the suspension beam 1 maintain a certain distance so that the insulating porcelain bottle will not rub against the suspension beam 1 when dragging. Therefore, the slideway 3 and the suspension beam 1 are arranged relatively parallel and there is a distance between the slideway 3 and the suspension beam 1, and the slideway 3 and the suspension beam 1 are located in the same plane. The slideway 3 and the suspension beam 1 can also be located in different planes.

[0026] The electric hoist towing cable device also includes a plurality of motors and an electric hoist control circuit. The electric hoist control circuit includes a plurality of relays, an emergency stop relay, a wireless transmitter and a wireless receiver. The electric hoist 2 is electrically connected to the plurality of motors. Each motor is individually connected to a contact of a relay. One end of the contact of the relay is connected to the output end of the wireless receiver through a coil. The other end of the contact of the relay is connected to the remote control power supply through the normally open contact of the emergency stop relay. The wireless transmitter is communicatively connected to the wireless receiver.

[0027] The wireless transmitting device and the wireless receiving device are F21-E1B wireless control devices. Each electric hoist 2 includes an electric hoist control circuit, and the wireless control device frequency in each electric hoist control circuit is different to avoid mutual interference.

[0028] like Figure 2As shown, two groups of relays and contacts are taken as examples. The control principles of other relays are the same and will not be described in detail. The left side of the figure is a schematic diagram of an infinite receiving device. "||" indicates that the signal is connected. The K1 switch and the K2 switch in the figure are limit switches. TF1 is a transformer, L is an inductor, X1 and X2 are connected to both ends of the power supply, and the coil MC01 and the normally open contact MC02 form an emergency stop relay. The coil MC61 and the normally closed contact MC62 form a group of relays, and the coil MC51 and the normally closed contact MC52 form a group of relays. When the coil MC61 receives a signal from the infinite receiving device, the coil MC61 is energized, the normally closed contact MC62 is disconnected, and the motor connected to the normally closed contact MC62 does not work. When the coil MC61 is energized, the normally closed contact MC52 connected to it is energized, and the motor connected to the normally closed contact MC52 works. When the coil MC51 receives the signal from the wireless receiving device, the coil MC61 loses power, the normally closed contact MC62 changes from disconnection to attraction, the motor connected to the normally closed contact MC62 works, the coil MC51 gets power, the normally closed contact MC52 changes from closing to disconnection, and the motor connected to the normally closed contact MC52 does not work. The motor is not shown in the figure, but the motor connected to the normally closed contact MC62 is different from the motor connected to the normally closed contact MC52. One motor can control the electric hoist 2 forward, and one motor can control the electric hoist 2 backward, and the locking control. Similarly, other motors can control the lifting hook of the electric hoist 2 to rise and fall. This is briefly explained without further elaboration. For example, the motor connected to the line where the coil MC41 and the normally closed contact MC32 are located controls the lifting hook to descend rapidly, and the motor connected to the line where the coil MC31 and the normally closed contact MC42 are located controls the lifting hook to rise rapidly.

[0029] The present invention also provides a method for an electric hoist towing cable device, the method comprising: dragging an electric hoist 2, the electric hoist 2 slides on a suspension beam 1, driving an insulating fixed block 4 connected thereto to move, the insulating fixed block 4 slides on a slideway 3 in the direction of movement of the electric hoist 2, driving other insulating fixed blocks 4 fixedly connected thereto at intervals to slide on the slideway 3 in the direction of movement of the electric hoist 2, cables 6 are tied to the several insulating fixed blocks 4 at intervals and sections, and move with the insulating fixed blocks 4, thereby realizing the overall movement of the cables 6, and the cables 6 are suspended at the position of the slideway 3, and will not be dragged into accumulated water or the power cable 6 will be squeezed and damaged, thereby avoiding the occurrence of safety accidents such as leakage and electric shock.

[0030] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An electric hoist towing cable device, characterized in that: It includes a suspension beam, a plurality of electric hoists, a slideway and a plurality of insulating fixed blocks. The suspension beam is fixed on the top plate of the hydraulic support chamber by an anchor cable. The plurality of electric hoists are all suspended on the suspension beam. The slideway is arranged relatively parallel to the suspension beam. One electric hoist corresponds to one slideway. The plurality of insulating fixed blocks are fixedly connected to form a fixing device at intervals by a first steel wire rope. The fixing device is located on the slideway and is slidably connected to the slideway. One end of the fixing device close to the electric hoist is fixedly connected to the electric hoist by a second steel wire rope. The electrical control box is connected to the head end of the cable. The cable is tied to the plurality of insulating fixed blocks in intervals and sections. The tail end of the cable is wound around the second steel wire rope and connected to the power supply of the electric hoist. The insulating fixed block is an insulating porcelain bottle, the slideway is a steel wire rail, a plurality of insulating porcelain bottles are fixedly connected to form a fixing device at intervals by a first steel wire rope, the fixing device is located on the slideway, the steel wire rail passes through the through holes in the centers of the plurality of insulating porcelain bottles in sequence, the insulating porcelain bottles are slidably connected to the slideway, and the insulating porcelain bottle at one end of the fixing device close to the electric hoist is fixedly connected to the electric hoist by a second steel wire rope; The first steel wire rope has strength and rigidity, and the outer side surface of each insulating porcelain bottle is fixedly connected to the outer side surface of an adjacent insulating porcelain bottle by a first steel wire rope, and the fixing method is that one end of the first steel wire rope is wrapped around the outer side surface of an insulating porcelain bottle by one or more turns with a vise, and the other end of the first steel wire rope is wrapped around the outer side surface of an insulating porcelain bottle adjacent to the insulating porcelain bottle by one or more turns with a vise, and the two adjacent insulating porcelain bottles are fixedly connected by the first steel wire rope; The slideway is arranged relatively parallel to the suspension beam and there is a distance between them. The slideway and the suspension beam are located in the same plane or in different planes. Each electric hoist is equipped with a group of insulating fixing blocks and each group of insulating fixing blocks is located on a different slideway.

2. The electric hoist towing cable device according to claim 1, characterized in that: It also includes several motors and an electric hoist control circuit. The electric hoist control circuit includes several first relays, an emergency stop relay, a wireless transmitter and a wireless receiver. The electric hoist is electrically connected to the several motors. Each motor is individually connected to a contact of a first relay. One end of the contact of the first relay is connected to the output end of the wireless receiver through a coil, and the other end of the contact of the first relay is connected to a remote control power supply through a normally open contact of the emergency stop relay. The wireless transmitter is communicatively connected to the wireless receiver.

3. The electric hoist cable towing device according to claim 1, characterized in that: Each of the electric hoists comprises an electric hoist control circuit, and the frequency of the wireless control device in each electric hoist control circuit is different.

4. The electric hoist cable towing device according to claim 1, characterized in that: The electrical control box is a BJX explosion-proof junction box.

5. A method for using the electric hoist towing cable device according to any one of claims 1 to 4, characterized in that: The method comprises: dragging the electric hoist, the electric hoist slides on the suspension beam, driving the insulating fixed block connected thereto to move, the insulating fixed block slides on the slideway in the direction of movement of the electric hoist, driving other insulating fixed blocks fixedly connected thereto at intervals to slide on the slideway in the direction of movement of the electric hoist, and cables are tied to the several insulating fixed blocks in intervals and sections, and move with the insulating fixed blocks.

Images