A ground discharge device for overhead crane

Abstract

The present invention discloses a ground discharge device for an overhead crane, comprising: a traveling frame, a trolley and a conductive box, wherein the conductive box is fixed on the surface of the trolley and the bottom is connected to the trolley in a close fit, a take-up reel is fixed inside the conductive box, the take-up reel comprises a connecting column and a baffle, two baffles are provided and are respectively provided at both ends of the connecting column, through holes are provided in the middle of the baffle and the connecting column, a winding groove is formed between the two baffles, a wire is wound and connected on the surface of the connecting column, and the end of the wire is grounded; a fixed tube is vertically fixed inside the conductive box, a conductive column is provided in the middle of the fixed tube, the lower end of the conductive column extends to the lower end of the conductive box and is connected to a conductive plate, and a plane spiral spring is provided inside the connecting column. The present invention arranges a conductive box on the trolley, and discharges by connecting one end of the wire to the conductive box and the other end to the ground, thereby reducing the influence of the current on the bearing and improving its service life.

Description

Technical Field

[0001] The invention relates to the technical field of cranes, and more specifically to a ground discharge device for an overhead crane. Background Art

[0002] Overhead crane is a lifting equipment that is horizontally mounted above workshops, warehouses and material yards to lift materials. Because its two ends are located on tall concrete columns or metal brackets, it looks like a bridge. The bridge of the overhead crane runs longitudinally along the tracks laid on the elevated platforms on both sides, and can make full use of the space under the bridge to lift materials without being hindered by ground equipment. It is the most widely used and largest type of lifting machinery.

[0003] At present, the existing overhead crane has the following problems: when the power supply system of the overhead crane is powered, the three-phase current will be unbalanced, so that the crane body will be charged, and the current will generally pass through the wheel hub bearings of the large wheel, and the current will seriously affect the bearing life. Therefore, a new solution needs to be designed to improve it. Summary of the invention

[0004] The purpose of the present invention is to provide a ground discharge device for an overhead crane, which solves the problems raised in the background technology and meets the actual use requirements.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a ground discharge device for an overhead crane, comprising: a frame, a trolley and a conductive box, wherein the conductive box is fixed on the surface of the trolley and the bottom is closely connected to the trolley, a wire take-up drum is fixed inside the conductive box, the wire take-up drum comprises a connecting column and a baffle, two baffles are provided and are respectively provided at both ends of the connecting column, through holes are provided in the middle of the baffle and the connecting column, a winding groove is formed between the two baffles, a wire is wound and connected to the surface of the connecting column, and the end of the wire is grounded; a fixed tube is vertically fixed inside the conductive box, a conductive column is provided in the middle of the fixed tube, the lower end of the conductive column extends to the lower end of the conductive box and is connected to a conductive plate, a planar volute spring is provided inside the connecting column, one end of the planar volute spring is fixedly connected to the inner wall of the connecting column, and the other end is fixedly connected to the fixed tube.

[0006] As a preferred embodiment of the present invention, a wire fixing nail is installed on the right side of the rack surface, and the right end of the wire extends to the right and is wound and connected with the wire fixing nail.

[0007] As a preferred embodiment of the present invention, the wire fixing nail includes a fixing column, a wire clamping plate 1, a wire clamping plate 2 and a stud. A threaded structure is arranged on the surface of the fixing column and the fixing column is fixedly connected to the rack with a nut. The wire clamping plate 1 is integrally formed at the right end of the fixing column. A screw hole is arranged at the right end of the fixing column. The wire clamping plate 2 is integrally formed at the right end of the stud, and the stud is threadedly connected to the screw hole.

[0008] As a preferred embodiment of the present invention, the wire is wound around the stud, a first card slot is opened on the right side wall of the first card slot, a second card slot is opened on the left side wall of the second card slot, and the second card slot is embedded and connected to the first card slot.

[0009] As a preferred embodiment of the present invention, the conductive plate, the conductive column and the take-up reel are all made of copper.

[0010] As a preferred embodiment of the present invention, mounting plates are fixed at both ends of the conductive box, mounting holes are provided on the mounting plates, the mounting plates are fixedly connected to the trolley by bolts, and a wire outlet hole is provided on the right side wall of the conductive box, and the wire passes through the wire outlet hole.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] (1) The crane ground discharge device is provided with a conductive box on the trolley. Discharge is performed by connecting one end of the wire to the conductive box and the other end to the ground, thereby reducing the impact of the current on the bearing and increasing its service life.

[0013] (2) The crane's ground discharge device has a take-up drum and a flat spiral spring installed in a conductive box. The wire is wound up by the take-up drum to prevent the wire from affecting the movement of the trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is the overall structural diagram of the ground discharge device of the overhead crane of the present invention;

[0015] Figure 2 This is a diagram showing the internal structure of the conductive box of the present invention;

[0016] Figure 3 It is a front view of the conductive box of the present invention;

[0017] Figure 4 A side view of the take-up reel of the present invention;

[0018] Figure 5 This is a structural diagram of the thread fixing nail described in the present invention.

[0019] In the figure: the frame 1; the trolley 2; the conductive box 3; the wire fixing nail 4; the wire reel 5; the fixing tube 6; the flat spiral spring 7; the conductive column 8; the mounting plate 9; the wire outlet hole 10; the conductive plate 11; the fixing column 12; the wire clamping plate 1 13; the wire clamping plate 2 14; the stud 15; the screw hole 16; the clamping slot 1 17; the clamping slot 2 18; the winding slot 19; the baffle 20; the through hole 21; the connecting column 22; the wire 23. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only 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.

[0021] See also Figure 1-5 The present invention provides a technical solution: a ground discharge device for an overhead crane, comprising: a traveling frame 1, a trolley 2 and a conductive box 3, wherein the conductive box 3 is fixed on the surface of the trolley 2, and the bottom is fitted and connected to the trolley 2, the conductive plate 11 at the bottom of the conductive box 3 is fitted with the trolley 2, and the surface of the trolley 2 is electrically conducted to the inside of the conductive box 3, a take-up drum 5 is fixed inside the conductive box 3, the take-up drum 5 comprises a connecting column 22 and a baffle 20, two baffles 20 are provided and are respectively provided at both ends of the connecting column 22, through holes 21 are provided in the middle of the baffle 20 and the connecting column 22, a winding groove 19 is formed between the two baffles 20, a wire 23 is wound and connected to the surface of the connecting column 22, the end of the wire 23 is grounded, and the wire 23 is moved out of the conductive box 3 and extends horizontally to the right end, and is connected to the fixed After the wire nail 4 is connected, the end of the wire 23 extends downward and is grounded; a fixing tube 6 is vertically fixed inside the conductive box 3, a conductive column 8 is arranged in the middle of the fixing tube 6, the lower end of the conductive column 8 extends to the lower end of the conductive box 3 and is connected to a conductive plate 11, and a plane volute spring 7 is arranged inside the connecting column 22, one end of the plane volute spring 7 is fixedly connected to the inner wall of the connecting column 22, and the other end is fixedly connected to the fixing tube 6, and the wire 23 will be pulled when the trolley 2 moves, and the wire 23 will drive the take-up drum 5 after being pulled out, and the take-up drum 5 will drive the plane volute spring 7 after rotating, and the plane volute spring 7 will store energy, and when the trolley 2 moves in the opposite direction, the plane volute spring 7 will rebound and drive the take-up drum 5, thereby releasing the wire 23, so that the conductive box 3 does not affect the operation of the trolley 2 during the conduction process.

[0022] Further improvement, such as Figure 1 As shown: a wire fixing nail 4 is installed on the right side of the surface of the rack 1, and the right end of the wire 23 extends to the right and is wound and connected with the wire fixing nail 4. The wire fixing nail 4 fixes the wire 23 to prevent the wire 23 from affecting the use of the trolley.

[0023] Further improvement, such as Figure 5 As shown: the wire fixing nail 4 includes a fixing column 12, a wire clamping plate 1 13, a wire clamping plate 2 14 and a stud 15. A threaded structure is arranged on the surface of the fixing column 12 and a nut is used to fix it to the rack 1. The wire clamping plate 1 13 is integrally formed at the right end of the fixing column 12. A screw hole 16 is provided at the right end of the fixing column 12. The wire clamping plate 2 14 is integrally formed at the right end of the stud 15. The stud 15 is threadedly connected to the screw hole 16. The wire fixing nail 4 is easy to install and use.

[0024] Further improvement, such as Figure 5 As shown: the wire 23 is wound around the stud 15, a clamping slot 17 is opened on the right wall of the clamping plate 13, and a clamping slot 2 18 is opened on the left wall of the clamping plate 2 14. The clamping plate 2 14 is embedded and connected with the clamping slot 17, and the clamping slot 17 and the clamping slot 2 18 have the effect of preventing them from falling off.

[0025] Further improvement, such as Figure 2 As shown: the conductive plate 11, the conductive column 8 and the take-up reel 5 are all made of copper, which has good electrical conductivity.

[0026] Specifically, mounting plates 9 are fixed at both ends of the conductive box 3 , mounting holes are provided on the mounting plates 9 , the mounting plates 9 are fixedly connected to the trolley 2 by bolts, and a wire outlet hole 10 is provided on the right side wall of the conductive box 3 , and the wire 23 passes through the wire outlet hole 10 .

[0027] When the present invention is used, the conductive box 3 is fixed to the surface of the trolley 2 by bolts, and then the internal wire 23 is pulled out and wound around the stud connected to the wire fixing nail 4. After the winding is completed, the wire clamping plate 2 14 is rotated to receive the wire clamping plate 2 14 into the clamping slot 17, which has the effect of preventing the wire 23 from falling off. The end of the wire 23 extends below the wire fixing nail 4 and is grounded. When the surface of the trolley 2 is charged, the conductive plate 11 guides the electricity to the conductive column 8, and the conductive column 8 guides the electricity to the wire take-up drum 5, so as to be grounded and conductive through the wire 23. When the trolley 2 runs in the opposite direction to the wire fixing nail 4, the wire 23 is pulled out from the inside of the conductive box 3 and drives the wire take-up drum 5 to rotate. After the wire take-up drum 5 rotates, it drives the plane scroll spring 7, and the plane scroll spring 7 stores energy. When the trolley 2 moves in the direction of the wire fixing nail 4, the plane scroll spring 7 drives the wire take-up drum 5 to reverse to receive the wire 23, so as to prevent the wire 23 from affecting the normal use of the trolley 2.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A ground discharge device for an overhead crane, comprising: A frame (1), a trolley (2) and a conductive box (3), characterized in that: the conductive box (3) is fixed on the surface of the trolley (2), and the bottom is closely connected to the trolley (2); a take-up drum (5) is fixed inside the conductive box (3); the take-up drum (5) includes a connecting column (22) and a baffle (20); two baffles (20) are provided and are respectively provided at both ends of the connecting column (22); a through hole (21) is provided in the middle of the baffle (20) and the connecting column (22); a winding groove (19) is formed between the two baffles (20); a wire (23) is wound around the surface of the connecting column (22), and the end of the wire (23) is grounded; A fixing tube (6) is vertically fixed inside the conductive box (3), a conductive column (8) is arranged in the middle of the fixing tube (6), the lower end of the conductive column (8) extends to the lower end of the conductive box (3) and is connected to a conductive plate (11), a planar scroll spring (7) is arranged inside the connecting column (22), one end of the planar scroll spring (7) is fixedly connected to the inner wall of the connecting column (22), and the other end is fixedly connected to the fixing tube (6); A wire fixing nail (4) is installed on the right side of the surface of the rack (1), and the right end of the wire (23) extends to the right and is wound and connected with the wire fixing nail (4); the wire fixing nail (4) includes a fixing column (12), a wire clamping plate 1 (13), a wire clamping plate 2 (14) and a stud (15); a threaded structure is provided on the surface of the fixing column (12) and a nut is used to fix it to the rack (1); the wire clamping plate 1 (13) is integrally formed at the right end of the fixing column (12), and a screw hole (16) is provided at the right end of the fixing column (12); the wire clamping plate 2 (14) is integrally formed at the right end of the stud (15), and the stud (15) is threadedly connected to the screw hole (16); the wire (23) is wound around the stud (15), a first clamping groove (17) is opened on the right side wall of the first clamping plate (13), a second clamping groove (18) is opened on the left side wall of the second clamping plate (14), and the second clamping plate (14) is embedded and connected with the first clamping groove (17); the conductive plate (11), the conductive column (8) and the take-up reel (5) are all made of copper material; mounting plates (9) are fixed at both ends of the conductive box (3), mounting holes are opened on the mounting plate (9), and the mounting plate (9) is fixedly connected to the trolley (2) by bolts, and a wire outlet hole (10) is opened on the right side wall of the conductive box (3), and the wire (23) passes through the wire outlet hole (10).

Images