Grounding pay-off pulley arrangement

Abstract

The application discloses a grounding pay-off pulley device, which comprises a pulley frame, a pay-off pulley is axially connected in the pulley frame, a swing arm is axially connected on each side of the pulley frame, the swing arm and the pulley frame are fixedly connected through an extension rod, a grounding pulley is axially connected in the swing arm, the grounding pulley is electrically connected with a grounding wire, a nylon wire pressing wheel is arranged above the grounding pulley, the nylon wire pressing wheel is axially connected on a wire pressing wheel frame, the wire pressing wheel frame is connected with the swing arm through an adjusting bolt, metal pressing sheets are symmetrically arranged on both sides of the wire pressing wheel frame, the metal pressing sheets are parallel to the radial plane of the nylon wire pressing wheel, and the metal pressing sheets are electrically connected with the grounding wire. The grounding pay-off pulley device can improve the defects of the prior art and improve the grounding stability of the wire on the grounding pay-off pulley.

Description

TECHNICAL FIELD

[0001] The present application relates to a kind of electric power construction equipment, in particular a kind of ground pay-off pulley device. BACKGROUND

[0002] In the process of laying transmission line conductor, ground pay-off pulley is needed to be used for the transportation of conductor, and the ground wire on the pulley can input the current on the conductor due to accidental cause into the ground to ensure the safety of operating personnel.But the conductor grounding stability of the existing ground pay-off pulley is poor, thereby leading to potential safety hazard. SUMMARY

[0003] The technical problem to be solved by the present application is to provide a kind of ground pay-off pulley device, which can solve the deficiency of prior art, improve the grounding stability of conductor on ground pay-off pulley.

[0004] To solve the above technical problems, the technical solutions adopted by the present application are as follows.

[0005] A kind of ground pay-off pulley device, including pulley frame, pulley frame is connected with pay-off pulley in shaft, the two sides of pulley frame are respectively connected with rocker arm in shaft, rocker arm and pulley frame are fixedly connected by telescopic link, rocker arm is connected with ground pulley in shaft, ground pulley is electrically connected with ground wire, nylon line pressing wheel is arranged above ground pulley, nylon line pressing wheel is connected with line pressing wheel frame in shaft, line pressing wheel frame is connected with rocker arm by adjusting bolt, metal pressing sheet is symmetrically installed on the two sides of line pressing wheel frame, the radial plane of metal pressing sheet and nylon line pressing wheel is parallel, metal pressing sheet is electrically connected with ground wire.

[0006] As preferred, the contact surface of the ground pulley and the cable is uniformly provided with a plurality of threaded rods, and the top of the threaded rods is provided with a detachable nut.

[0007] As preferred, the nylon line pressing wheel is provided with a line pressing groove, a flexible gasket is arranged on the inner side of the line pressing groove, and springs are connected between the two sides of the line pressing groove and the flexible gasket.

[0008] As preferred, the outer side of the line pressing groove is connected with a flexible extension plate, and the flexible gasket covers the inner side surface of the flexible extension plate.

[0009] As preferred, one end of the metal pressing sheet connected with the line pressing wheel frame is provided with a strip-shaped hole, a fixing bolt passes through the strip-shaped hole to press and fix the metal pressing sheet on the line pressing wheel frame, and the free end of the metal pressing sheet is provided with an arc-shaped part.

[0010] As preferred, a plurality of mounting holes are arranged on the surface of the metal pressing sheet, a metal pressing plate is mounted on the mounting hole, and the metal pressing plate is press-fitted with the cable.

[0011] The beneficial effects brought by the technical scheme are as follows: the ground pulley and the nylon wire pressing wheel are installed on both sides of the pay-off pulley, so that the cable forms a stable three-point supporting structure at the pay-off pulley, ensuring the stability of the contact between the cable and the ground pulley, the metal pressing sheet can further improve the grounding area of the cable, and more importantly, the three-point supporting structure of the cable is reinforced from the outside. By adjusting the height of the screw rod and selecting a suitable shape of the nut, the cable of different sizes can be stably crimped, and the problem of reducing the grounding stability due to the relative sliding between the cable and the ground pulley is avoided. When the cable is crimped and limited by the wire pressing groove on the nylon wire pressing wheel, the flexible gasket clamps and fixes the cable from both sides, so that the cable of different thicknesses can be stably crimped. When the nylon wire pressing wheel is pressed down, the flexible extension plate is deformed under the extrusion of the nylon wire pressing wheel and the ground pulley, and the flexible gasket is folded at the edge of the wire pressing groove, which can ensure that the flexible gasket has sufficient length to move with the spring when the spring is elastically deformed, and can also form a lateral limiting clamping of the cable outside the wire pressing groove. By changing the relative position of the fixing bolt and the strip-shaped hole, the installation position of the metal pressing sheet can be adjusted, and according to the speed and tension state of the cable during the pay-off process, a triangular support can be formed between the metal pressing sheet, the metal pressing plate and the cable by installing a proper number of metal pressing plates at a suitable position of the metal pressing sheet, which cooperates with the three-point supporting structure of the cable, so as to further improve the stability of the cable during the pay-off process, and further improve the grounding connection stability of the cable. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 is a structural diagram of one specific embodiment of the present application.

[0013] Figure 2 is a partial enlarged view of the contact surface between the ground pulley and the cable in one specific embodiment of the present application.

[0014] Figure 3 is an axial sectional view of the nylon wire pressing wheel in one specific embodiment of the present application.

[0015] Figure 4 is a structural diagram of the metal pressing sheet in one specific embodiment of the present application.

[0016] In the figure: 1, pulley frame; 2, pay-off pulley; 3, rocker arm; 4, telescopic rod; 5, ground pulley; 6, grounding wire; 7, nylon wire pressing wheel; 8, wire pressing wheel frame; 9, adjusting bolt; 10, metal pressing sheet; 11, screw rod; 12, nut; 13, wire pressing groove; 14, flexible gasket; 15, spring; 16, flexible extension plate; 17, strip-shaped hole; 18, fixing bolt; 19, arc-shaped part; 20, mounting hole; 21, metal pressing plate. DETAILED DESCRIPTION

[0017] Referring to Figures 1-4 , one specific embodiment of the present application comprises a pulley frame 1, a pay-off pulley 2 is axially connected in the pulley frame 1, a swing arm 3 is axially connected on each side of the pulley frame 1, the swing arm 3 is fixedly connected with the pulley frame 1 through an extension rod 4, a ground-engaging pulley 5 is axially connected in the swing arm 3 Figure 1The middle dotted line refers to a known bracket and bearing for installing the grounding pulley 5, the grounding pulley 5 is electrically connected with the grounding wire 6, the nylon pressure cable wheel 7 is arranged above the grounding pulley 5, the nylon pressure cable wheel 7 is connected with the pressure cable wheel bracket 8, the pressure cable wheel bracket 8 is connected with the rocker arm 3 through the adjusting bolt 9, the metal pressure plate 10 is symmetrically arranged on both sides of the pressure cable wheel bracket 8, the metal pressure plate 10 is parallel to the radial plane of the nylon pressure cable wheel 7, the metal pressure plate 10 is electrically connected with the grounding wire 6. The cable is formed into a stable three-point supporting structure at the pay-off pulley 2 through the pay-off pulley 2, the grounding pulley 5 and the nylon pressure cable wheel 7, the stability of the contact between the cable and the grounding pulley 5 is ensured, the metal pressure plate 10 can further improve the grounding area of the cable, and more importantly, the three-point supporting structure of the cable is externally reinforced. A plurality of threaded connecting screw rods 11 are uniformly arranged on the contact surface between the grounding pulley 5 and the cable, and a detachable screw cap 12 is arranged on the top of the screw rod 11. By adjusting the height of the screw rod 11 and selecting a screw cap 12 with a suitable shape, the stable crimping of cables of different sizes can be realized, and the problem of reducing the grounding stability due to the relative sliding between the cable and the grounding pulley 5 can be avoided. The nylon pressure cable wheel 7 is provided with a pressure cable groove 13, the inner side of the pressure cable groove 13 is paved with a flexible gasket 14, and springs 15 are connected between the pressure cable groove 13 and the flexible gasket 14 on both sides. The outer side of the pressure cable groove 13 is connected with a flexible extension plate 16, the flexible gasket 14 is covered on the inner side of the flexible extension plate 16, and the lower edge of the flexible gasket 14 is fixedly connected with the lower edge of the flexible extension plate 16. When the pressure cable groove 13 on the nylon pressure cable wheel 7 limits the crimping of the cable, the flexible gasket 14 clamps and fixes the cable from both sides, so that the cables with different thicknesses can be stably crimped. When the nylon pressure cable wheel 7 is pressed down, the flexible extension plate 16 is deformed under the extrusion of the nylon pressure cable wheel 7 and the grounding pulley 5, so that the flexible gasket 14 is folded at the edge of the pressure cable groove 13. On the one hand, when the spring 15 is elastically deformed, the flexible gasket 14 has sufficient length to move with the spring 15, and on the other hand, the flexible gasket 14 can also form a lateral limiting clamping on the outer side of the pressure cable groove 13. The end of the metal pressure plate 10 connected with the pressure cable wheel bracket 8 is provided with a strip-shaped hole 17, a fixed bolt 18 passes through the strip-shaped hole 17 to crimp and fix the metal pressure plate 10 on the pressure cable wheel bracket 8, and the free end of the metal pressure plate 10 is provided with an arc-shaped part 19. A plurality of mounting holes 20 are arranged on the surface of the metal pressure plate 10, a metal pressure plate 21 is arranged on the mounting hole 20, and the metal pressure plate 21 is crimped with the cable. By changing the relative position of the fixed bolt 18 and the strip-shaped hole 17, the installation position of the metal pressure plate 10 can be adjusted, according to the speed and tension state of the cable during the pay-off process, a proper number of metal pressure plates 21 are arranged at a proper position of the metal pressure plate 10, a triangular support is formed between the metal pressure plate 10, the metal pressure plate 21 and the cable, and the three-point supporting structure of the cable is matched, so that the stability of the cable during the pay-off process is further improved, and the grounding connection stability of the cable is further improved.

[0018] The application can effectively improve the grounding stability of the wire on the grounding pay-off pulley and reduce the safety hidden danger in the pay-off operation process.

[0019] In the description of the present application, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0020] The basic principles and main features of the present application and the advantages of the present application are shown and described above. It should be understood by those skilled in the art that the present application is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A ground wire paying-off pulley device, comprising a pulley frame (1), a paying-off pulley (2) is connected with the pulley frame (1) through a shaft, characterized in that: The pulley frame (1) is respectively connected with a rocker arm (3) on both sides, and the rocker arm (3) and the pulley frame (1) are fixedly connected through the telescopic rod (4), the rocker arm (3) is connected with the ground pulley (5) on the inner shaft, the ground pulley (5) is electrically connected with the ground wire (6), the nylon wire pressing wheel (7) is arranged above the ground pulley (5), the nylon wire pressing wheel (7) is connected with the wire pressing wheel frame (8) on the shaft, the wire pressing wheel frame (8) is connected with the rocker arm (3) through the adjusting bolt (9), the wire pressing wheel frame (8) is symmetrically installed with the metal pressing sheet (10) on both sides, the metal pressing sheet (10) is parallel to the radial plane of the nylon wire pressing wheel (7), and the metal pressing sheet (10) is electrically connected with the ground wire (6); a plurality of threaded connecting screw rods (11) are uniformly arranged on the contact surface of the ground pulley (5) and the cable, the top of the screw rod (11) is provided with a detachable screw cap (12); the nylon wire pressing wheel (7) is provided with a wire pressing groove (13), the inner side of the wire pressing groove (13) is paved with a flexible gasket (14), and the spring (15) is connected between the two sides of the wire pressing groove (13) and the flexible gasket (14); the outer side of the wire pressing groove (13) is connected with a flexible extension plate (16), the flexible gasket (14) is covered on the inner side of the flexible extension plate (16), and the lower edge of the flexible gasket (14) is fixedly connected with the lower edge of the flexible extension plate (16).

2. The ground wire payout pulley assembly of claim 1, wherein: The metal pressing sheet (10) is provided with a strip-shaped hole (17) at one end connected with the wire pressing wheel frame (8), the fixed bolt (18) passes through the strip-shaped hole (17) to press and fix the metal pressing sheet (10) on the wire pressing wheel frame (8), and the free end of the metal pressing sheet (10) is provided with an arc-shaped part (19).

3. The ground line payout pulley assembly of claim 2, wherein: The metal pressing sheet (10) is provided with a plurality of mounting holes (20) on the surface, the metal pressing plate (21) is mounted on the mounting hole (20), and the metal pressing plate (21) is pressed and connected with the cable.

Images