Guiding device for towing cable of electric hoist

Abstract

The utility model discloses a guide device for towing a cable of an electric hoist, which comprises a plurality of pairs of opposite and parallel side plates, and a first hole, a second hole and a third hole are formed in each pair of two side plates from top to bottom; bearings are respectively arranged at the first holes of the two side plates in each pair, are positioned on the inner sides of the two side plates, and are arranged on an I-shaped steel beam on which the electric hoist walks and move along the I-shaped steel beam; adjusting screw rods are mounted in the second holes of each pair of side plates, and two ends of each adjusting screw rod respectively extend out of the two side plates and are fastened by nuts; the third holes of each pair of side plates are provided with a suspension screw rod used for suspending and moving a cable suspension device, and two ends of the suspension screw rod respectively extend out of the two side plates and are fastened by nuts. The guide device drives the movable cable suspension device to advance by moving on the walking I-shaped steel beam of the electric hoist, assists in completing cable towing operation of the electric hoist, is simple in structure, convenient and rapid to construct and low in preparation cost, and can be used under the condition that the I-shaped steel beam is provided with an arc-shaped rail.

Description

Technical Field

[0001] This utility model relates to the technical field of auxiliary devices for electric hoist lifting equipment, and in particular to a guide device for electric hoist cable dragging. Background Technology

[0002] There are many types of lifting equipment. Those with large lifting capacities are generally beam cranes, while electric hoists can be used in applications where a particularly large lifting capacity is not required. The power supply methods also differ for different types of lifting equipment. Suspended monorail beam cranes or double-rail cranes have relatively large electrical loads and generally use safety conductor rails, rigid conductor rails, or angle steel conductor rails, which increases costs. For general electric hoist cranes, from an economic cost perspective, it is unnecessary to use these conductor rail power supply methods; mobile cable-stayed power supply is usually chosen.

[0003] In general, electric hoists mostly run on straight tracks, and the cable suspension methods vary. However, they are basically equipped with supports and cable guides on the outside of the I-beam track. In this way, when the electric hoist travels on the I-beam track, it can drag the cable along its guide to move together, realizing mobile cable power supply.

[0004] For example, the "sling-suspended mobile cable" power supply method uses a steel wire rope as a sling. Both ends of the steel wire rope are fixed to the ends of a support frame via tensioning devices. A "mobile cable suspension device" is installed on the steel wire rope. The mobile cable and the traction rope are fixed together to this suspension device and move together, achieving mobile cable power supply. Each section of the traction rope is shorter than that section of the mobile cable, and the traction rope is subjected to tension during movement to protect the cable.

[0005] For example, the "double angle steel rail suspended moving cable" power supply method involves welding a bracket every 2 meters on the top of the I-beam on which the electric hoist travels. Double angle steel rails are installed on these brackets, and two wheels of the two-wheel suspension device are mounted on these rails. The moving cable and traction rope (which can be...) are then... The steel wire ropes are fixed together on the two-wheel suspension device and move together to realize mobile cable power supply.

[0006] It is evident that the aforementioned cable-driven power supply method is only applicable to straight tracks. When encountering I-beam tracks with one or more curved radii, these suspended mobile cable-driven power supply methods are not suitable. Furthermore, if the cable-driven track is specially designed to conform to the curvature of the I-beam track, the cost of the electric hoist lifting equipment will increase significantly, resulting in poor practicality and limited widespread application.

[0007] In addition, some literature uses "open square tube slide rail fixed bracket" to move the cable. Although this method can be applied to curved tracks, it is only suitable for tracks with a large bending radius. Moreover, it is very difficult to ensure that the bending radius of the open square tube slide rail is consistent with the bending radius of the electric hoist's traveling I-beam. It is necessary to separately manufacture the curved open square tube slide rail in the processing plant. The manufacturing process is relatively complicated and its practicality is poor. Utility Model Content

[0008] Based on this, the purpose of this utility model is to provide a guiding device for electric hoist cable dragging. After being fixed to the electric hoist, the device allows the movable cable suspension device at its bottom to move flexibly under the action of the traction steel wire rope, thereby realizing cable dragging operation. This device has a simple structure, is easy to construct, and is low in cost, thus solving the problem that existing electric hoist cable dragging methods cannot meet the requirements of steel beam tracks with curved sections at a low cost. The above objective can be achieved through the following technical solutions:

[0009] This utility model provides a guiding device for an electric hoist cable, comprising: multiple pairs of opposite and parallel side plates, each pair of side plates having a first hole, a second hole, and a third hole from top to bottom on both sides; bearings are installed at the first holes of each pair of side plates, and the bearings are located on the inner side of the side plates, for placing on and moving on the lower flange of an I-beam; an adjusting screw is installed at the second hole of each pair of side plates, the two ends of the adjusting screw extending out of the side plates respectively, and nuts are screwed on the inner and outer sides of the side plates for fastening; a suspension screw is installed at the third hole of each pair of side plates, the two ends of the suspension screw extending out of the side plates respectively, and nuts are screwed on the inner and outer sides of the side plates for fastening, the suspension screw being used to suspend the mobile cable suspension device.

[0010] Optionally, the suspension screw is also fitted with two clamping nuts for fixing the suspended mobile cable suspension device.

[0011] Optionally, the mobile cable suspension device includes: a lifting ring and a clamping plate structure fixed to the bottom of the lifting ring. Each mobile cable suspension device is suspended on the suspension screw of each pair of side plates through the lifting ring. The cable passes through the clamping plate structure in each mobile cable suspension device in sequence. The traction steel wire rope is fixed to each lifting ring in sequence. The traction steel wire rope is shorter than the cable.

[0012] Optionally, the side plate is made of steel plate with a thickness of 8mm to 12mm.

[0013] Optionally, the first hole is located on the upper part of the side plate, and the second and third holes are both located on the lower part of the side plate, and the first, second and third holes are all located on the vertical line of the side plate.

[0014] Optionally, the side plate is 250mm long and 50mm wide; the first hole is located at 200mm from the side plate, the second hole is located at 100mm from the side plate, and the third hole is located at 50mm from the side plate.

[0015] Beneficial effects: The guide device provided by this utility model is suspended on the I-beam on which the electric hoist travels and moves along the wing plate, thereby driving the mobile cable suspension device to move forward, and thus assisting the electric hoist in completing the cable-pulling power supply operation. The guide device has a simple structure, is convenient and quick to construct, and has low manufacturing cost. Since the guide device is directly suspended and moves along the wing plate of the I-beam, even if the I-beam (track) has a curved section (i.e., the I-beam is an arc-shaped track), the guide device can still drive the mobile cable suspension device to move smoothly and flexibly, without the need to set up a separate support or a separate arc-shaped cable-pulling track on the support. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a guide device for an electric hoist cable in one embodiment of this utility model;

[0017] Figure 2 This is a side view of a guide device for an electric hoist cable in one embodiment of the present invention.

[0018] Figure 3 This is a schematic diagram of the installation of the traction steel wire rope and the moving cable when the electric hoist is dragging the cable in one embodiment of this utility model.

[0019] Reference numerals: side plate 10, bearing 11, adjusting screw 12, suspension screw 13, nut 14, clamping nut 15, fixing bolt 111, I-beam 20, moving cable suspension device 30, cable 31, traction wire rope 40. Detailed Implementation

[0020] The technical solution of this utility model will be clearly and completely described below with reference to its embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0021] Figure 1 The diagram schematically illustrates the structure of a guide device for an electric hoist cable according to a preferred embodiment of this application. Figure 2 A side view of the device is shown, along with a diagram illustrating the usage status of the guide device for the electric hoist cable.

[0022] The guide device for cable dragging of an electric hoist provided in this application is fixed to the electric hoist during use. Under the power of the electric hoist, it drives the bottom moving cable suspension device 30 to move, thereby completing the cable dragging operation. Furthermore, the head end (the foremost side plate) of the guide device can be welded and fixed to the electric hoist.

[0023] like Figure 1 and Figure 2 As shown, the guiding device includes multiple pairs of opposing and parallel side plates 10. Each pair of side plates 10 has a first hole, a second hole, and a third hole from top to bottom on both sides. A bearing 11 is installed at the first hole of each pair of side plates 10, with the bearing 11 located inside the side plates 10. The bearing 11 is used to rest on and move on the lower flange of the I-beam 20 on which the electric hoist travels. An adjusting screw 12 is installed at the second hole of each pair of side plates 10. Both ends of the adjusting screw 12 extend outside the side plates 10, and nuts 14 are screwed onto both the inner and outer sides of the side plates 10 for fastening. A suspension screw 13 is installed at the third hole of each pair of side plates 10. Both ends of the suspension screw 13 extend outside the side plates 10, and nuts 14 are screwed onto both the inner and outer sides of the side plates 10 for fastening. The suspension screw 13 is used to suspend the moving cable suspension device 30.

[0024] The side plate 10 can be made of steel plate with a thickness of 8mm to 12mm. To improve the stability of the device during use, the first hole is located on the upper part of the side plate 10, and the second and third holes are both located on the lower part of the side plate 10, with all three holes situated on the vertical center line of the side plate 10. For example, if the side plate 10 is 250mm long, the first hole is located at 200mm of the side plate 10, the second hole at 100mm of the side plate 10, and the third hole at 50mm of the side plate 10.

[0025] The guiding device for electric hoist cable provided by this utility model has the advantages of simple manufacturing and low cost. The manufacturing process of the guiding device for electric hoist cable is described below:

[0026] First, a side plate 10 with a length of 250mm and a width of 50mm is made from a steel plate with a thickness of 10mm. Holes are made at 50mm, 100mm and 200mm from bottom to top along the vertical line of the side plate 10, forming the third hole, the second hole and the first hole.

[0027] Secondly, a bearing 11 is installed on the inner side of each of the two side plates 10 at the 200mm opening. The bearings 11 can be fixed with bolts, and the bearings 11 act as pulleys for guiding the movement of the I-beam 20. Figure 1As shown, the fixing bolt 111 can be passed through the first hole and fixed with a nut 14 on the outside of the side plate 10. The size of the bearing 11 can be replaced according to the size of the on-site I-beam 20.

[0028] Next, a continuous threaded screw rod 12 is installed between the two side plates 10 at the 100mm opening. Both ends of the adjusting screw rod 12 pass through the outside of the two side plates 10, and nuts 14 are installed inside and outside each side plate 10 to lock it in place. The length of the adjusting screw rod 12 should be greater than the width of the I-beam 20 + 2 × the thickness of the side plate 10, ensuring it won't slip off after installation on the I-beam 20; for example, 300mm can be selected.

[0029] Finally, a continuous threaded rod 13 is installed between the two side plates 10 at the 50mm opening as a suspension rod 13. The length and installation method are the same as the adjusting rod 12 above. In addition, during installation, two clamping nuts 15 need to be screwed into the suspension rod 13 to fix the lifting ring in the moving cable suspension device 30 to the middle of the suspension rod 13, so as to improve the stability of the device when moving.

[0030] like Figures 1 to 2 As shown, the mobile cable suspension device 30 includes a lifting ring located at the top, which can be directly threaded onto the suspension screw 13. Below the lifting ring is a clamping plate structure used to clamp the cable 31 for movement. Figure 2 As shown, the cable 31 is sequentially inserted into the clamping structure of each movable cable suspension device 30. Specifically, the clamping structure includes an upper clamping plate and a lower clamping plate. The upper and lower clamping plates are connected on both sides by connectors, which can restrict the cable 31 from moving outward. The top of the upper clamping plate is fixed to the bottom of the lifting ring. In use, the suspension screw 13 can first pass through the lifting ring and clamping nut 15, and then be installed and fixed to the side plate 10.

[0031] Figure 3 A schematic diagram illustrating the installation of the traction wire rope and moving cable during electric hoist cable pulling in one embodiment is shown. Figure 3 As shown, the traction wire rope 40 is fixed to the boom of the mobile cable suspension device 30, and the cable 31 is fixed in the middle of the clamp.

[0032] When using, refer to Figure 2 As shown in the figure, four pairs of side plates are depicted in the guide device, with a movable cable suspension device hanging at the bottom of each pair of side plates; the traction steel wire rope 40 (not shown) is arranged according to... Figure 3The cables are fixed sequentially on each boom as shown in the figure. The cable 31 is passed through each clamp and fixed in the middle of the clamp. The electric hoist is welded and fixed to the front end of the guide device. When the electric hoist is powered on and moves, it will drag the guide device (under the action of the bearing) to run on the guide rail. After traveling a certain distance, it will drag the traction wire rope, thereby driving the cable to move forward or backward together. Each section of the traction wire rope is shorter than the cable to protect each section of the cable.

[0033] The guide device for electric hoist cable dragging provided by this utility model includes multiple pairs of side plates 10. In use, the multiple pairs of side plates 10 are directly suspended on the lower flange plate of the I-beam 20 on which the electric hoist travels through the cooperation of bearings 11, adjusting screws 12 and suspension screws 13, and can travel along the flange plate, thereby driving the moving cable suspension device 30 suspended at its lower end to move, that is, driving the cable 31 to travel. Thus, it can flexibly complete the electric hoist cable dragging operation on any straight I-beam 20 or I-beam 20 with a bending radius. For example, when the I-beam 20 is an arc track, the guide device can smoothly pass through the curved section. Since this utility model is directly suspended on the H-beam 20 of the electric hoist, it is particularly convenient to use, without the need for a separate support or an arc-shaped drag cable track; moreover, the addition of the adjusting screw 12 and the suspension screw 13 increases its applicability. The track of the H-beam 20 with different cross-sections can be adapted by adjusting the length of the screw 12, and the two screws set at the top and bottom also increase the stability of the device.

[0034] Compared with the prior art, the guiding device for electric hoist cable provided in this application also has the following advantages:

[0035] 1) It is highly versatile and applicable to both straight and curved I-beams, with its advantages being particularly prominent in curved tracks.

[0036] 2) It can share the same 20mm track with the electric hoist, which is very convenient and does not require separate cable support and cable track.

[0037] 3) The setting of adjusting screw 12 and suspension screw 13 increases the range of applicability. It is applicable to any I-beam 20 that is narrower than the length of the screw. For I-beam 20 tracks with different cross sections, the length of screw 12 can be adjusted for adaptation. In addition, the setting of two screws at the top and bottom increases the stability of the device.

[0038] 4) The guide device for the electric hoist cable is small and lightweight, and all connection parts are connected by bolts / nuts, making installation convenient.

[0039] The description of this utility model is given for illustrative and descriptive purposes only, and is not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical application of the utility model, and to enable those skilled in the art to understand the utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A guiding device for an electric hoist cable, characterized in that, include: Multiple pairs of opposite and parallel side plates, each pair of side plates has a first hole, a second hole and a third hole from top to bottom; In each pair of side plates, a bearing is installed at the first hole of each side plate, and the bearing is located on the inner side of the side plates for placing on the lower flange of the I-beam on which the electric hoist travels and moving thereon. An adjusting screw is installed at the second hole of each pair of side plates. The two ends of the adjusting screw extend out of the two side plates respectively, and nuts are screwed on the inner and outer sides of the two side plates for fastening. A suspension screw is installed at the third hole of each pair of side plates. The two ends of the suspension screw extend out of the two side plates respectively, and nuts are screwed on the inner and outer sides of the two side plates for fastening. The suspension screw is used to suspend the mobile cable suspension device.

2. The guiding device for the electric hoist cable according to claim 1, characterized in that, Two clamping nuts are also fitted on the suspension screw to fix the suspended mobile cable suspension device.

3. The guiding device for the electric hoist cable according to claim 2, characterized in that, The mobile cable suspension device includes a lifting ring and a clamping plate structure fixed to the bottom of the lifting ring. Each mobile cable suspension device is suspended from the suspension screw of each pair of side plates by the lifting ring. The cable passes through the clamping plate structure in each mobile cable suspension device in sequence. The traction steel wire rope is fixed to each lifting ring in sequence. The traction steel wire rope is shorter than the cable.

4. The guiding device for the electric hoist cable according to claim 1, characterized in that, The side plate is made of steel plate with a thickness of 8mm to 12mm.

5. The guiding device for the electric hoist cable according to claim 1, characterized in that, The first hole is located on the upper part of the side plate, and the second and third holes are both located on the lower part of the side plate, and the first, second and third holes are all located on the vertical center line of the side plate.

6. The guiding device for the electric hoist cable according to claim 1, characterized in that, The side plate is 250mm long and 50mm wide; the first hole is located at 200mm from the side plate, the second hole is located at 100mm from the side plate, and the third hole is located at 50mm from the side plate.

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