Power supply sliding contact line of tower crane

Abstract

The utility model discloses a tower crane power supply sliding contact line, which comprises a bus duct, a rotary boss and a rotary concave platform, and is characterized by further comprising a mounting plate, one side of the bus duct is fixedly provided with the mounting plate, the other side of the bus duct is provided with a sliding groove in sliding connection with the mounting plate, and the mounting plate is detachably connected with the rotary boss and the rotary concave platform. The end, located in the sliding groove, of the mounting plate is an inclined face, a first threaded hole is formed in the inner wall of the sliding groove and penetrates through the outer wall of the bus duct, a screw is in threaded connection with the interior of the first threaded hole, a knob is fixedly arranged at the end, located outside the bus duct, of the screw, and the end, located in the bus duct, of the screw is rotationally connected with a control block abutting against the inclined face of the mounting plate. The inner wall of the sliding groove is symmetrically provided with return grooves, the inner wall, far away from the first threaded hole, of each return groove is fixedly provided with a return spring, and the return springs are fixedly connected with return blocks fixedly connected with the side wall of the mounting plate. According to the utility model, the rotary knob can be rotated to control the rotary boss to move back and forth, and the position of the rotary boss relative to the bus duct can be conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of busbars, in particular to a tower crane power supply busbar. Background Art

[0002] The busbar, also known as the sliding conductor, is a set of power transmission devices that supply power to mobile devices. Mobile devices need to constantly change their positions due to movement. At each different position, the mobile device must be able to obtain power at any time, otherwise it will not be able to continue moving. At this time, the busbar came into being. Several conductors are laid in parallel along the running track of the mobile device and connected to the power supply. On the mobile equipment, a collector that can draw electricity from the conductor is installed. Tower cranes are important equipment for construction hoisting operations in the construction industry. Most of the vertical transportation of building materials is completed by tower cranes, and the rotation of tower cranes can easily cause wires and cables to break.

[0003] The invention with publication number CN114498232A discloses a busbar connection structure for rotating power supply of a tower crane, comprising a rotatingly connected tower crane movable part and a tower crane fixed part, a busbar structure is arranged between the tower crane movable part and the tower crane fixed part; the busbar structure comprises a current collector and a busbar duct of annular structure, a plurality of busbar ducts are sequentially connected end to end to form a closed loop structure, a rotating boss and a rotating concave platform are respectively arranged at the head and tail ends of the busbar duct, two adjacent groups of the busbar ducts are rotatably connected through the rotating boss and the rotating concave platform, and the rotating boss or The rotating recessed table slides linearly on the corresponding bus duct, and a second adjusting screw is threadedly connected to the bus duct. One end of the second adjusting screw is connected to an inclined sliding block that slides linearly in the bus duct, and the inclined surface of the inclined sliding block slides linearly with the inclined surface of the corresponding rotating boss or rotating recessed table. The invention transforms the busbar into an arc-shaped closed-loop structure and uses it on a tower crane. The busbar with an arc-shaped closed-loop structure can prevent the wires and cables from twisting off during the rotating operation of the tower crane; and prevent the sudden breakage of the wires and cables that may cause a sudden power outage in the tower crane.

[0004] The above-mentioned existing scheme has the following problems: rotating the second adjusting screw drives the inclined sliding block to move vertically and linearly, and the inclined surface of the inclined sliding block and the inclined surface of the rotating boss are linearly slidably matched to drive the rotating boss to move horizontally and linearly relative to each other, thereby adjusting the distance between the threaded portion of the rotating boss and the through hole of the rotating recess, and adjusting the length of the two adjacent groups of bus ducts connected together. However, rotating the second adjusting screw to drive the inclined sliding block to move can only make the rotating boss move outward in one direction but cannot move the rotating boss in the direction of the bus duct, and cannot conveniently adjust the distance between the threaded portion of the rotating boss and the through hole of the rotating recess. Utility Model Content

[0005] The utility model aims to provide a tower crane power supply busbar to solve the above technical problems.

[0006] The cam is an assembly made of a plurality of independently controlled plates, the plurality of independently controlled plates having a plurality of independently controlled plates, are provided with a plurality of independently controlled plates at a plurality of opposite ends of the plurality of independently controlled plates, and the plurality of independently controlled plates are provided with a plurality of independently controlled plates at a plurality of opposite ends of the plurality of independently controlled plates.

[0007] Preferably, a rotating groove is provided on the control block, the outer wall of the screw located in the rotating groove is a smooth curved surface and is rotatably connected to the rotating groove, a bearing groove is provided on the inner wall at the bottom of the rotating groove, a bearing is rotatably provided in the bearing groove, and the inner ring of the bearing is fixedly connected to the outer wall of the screw.

[0008] Preferably, one end of the control block that contacts the inclined surface of the mounting plate is an arc surface, and the two side walls of the control block fit with the inner wall of the slide groove.

[0009] Preferably, the outer wall of the return block fits with the inner wall of the return groove, and the outer wall of the mounting plate fits with the inner wall of the slide groove.

[0010] Preferably, an insert plate is fixedly provided on one end of the rotating boss and the rotating recessed table close to the bus duct, a second threaded hole is penetrated through the insert plate, an embedding groove for inserting the insert plate is provided on the end of the mounting plate away from the bus duct, and a third threaded hole is provided on the mounting plate corresponding to the second threaded hole and extends to the bottom of the embedding groove.

[0011] Preferably, the inner wall of the embedding groove fits with the outer wall of the embedding plate, and the size of the second threaded hole is consistent with the size of the third threaded hole.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: through the arrangement of the mounting plate, the slide groove, the first threaded hole, the screw, the control block, the knob, the return groove, the return block and the return spring, the rotating boss can be adjusted to slide back and forth relative to the bus duct by rotating the knob, thereby facilitating and accurately adjusting the distance between the threaded portion of the rotating boss and the through hole of the rotating recess, thereby realizing the adjustment of the length of the two adjacent groups of bus ducts connected together; through the arrangement of the embedded plate, the embedded groove, the second threaded hole and the third threaded hole, the rotating boss and the rotating recess can be easily replaced when damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 Schematic diagram of the appearance of this embodiment;

[0015] Figure 2 This is a partial cross-sectional view of the mounting plate in this embodiment;

[0016] Figure 3 It is a partial diagram of the disassembled rotating boss and the mounting plate of this embodiment.

[0017] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0018] 1. Bus duct; 2. Rotating boss; 3. Rotating recess; 4. Mounting plate; 5. Slide groove; 6. First threaded hole; 7. Screw; 8. Control block; 9. Knob; 10. Return groove; 11. Return spring; 12. Return block; 13. Rotating groove; 14. Bearing groove; 15. Bearing; 16. Panel; 17. Embossed groove; 18. Second threaded hole; 19. Third threaded hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-3The utility model provides a technical solution: a tower crane power supply busbar, including a bus duct 1, a rotating boss 2 and a rotating recessed platform 3, and also includes a mounting plate 4, one side of the bus duct 1 is fixedly installed with the mounting plate 4, the other side of the bus duct 1 is provided with a slide groove 5 slidably connected to the mounting plate 4, the mounting plate 4 is detachably connected to the rotating boss 2 and the rotating recessed platform 3, one end of the mounting plate 4 located in the slide groove 5 is an inclined surface, the inner wall of the slide groove 5 is provided with a first threaded hole 6 and passes through the outer wall of the bus duct 1, the first threaded hole 6 is threadedly connected with a screw 7, the end of the screw 7 located outside the bus duct 1 is fixedly provided with a knob 9, the end of the screw 7 located in the bus duct 1 is rotatably connected with a control block 8 that abuts against the inclined surface of the mounting plate 4, the inner wall of the slide groove 5 is symmetrically provided with a return groove 10, the inner wall of the return groove 10 away from the first threaded hole 6 is fixedly provided with a return spring 11, and the return spring 11 is fixedly connected with a return block 12 fixedly connected to the side wall of the mounting plate 4.

[0021] Specifically, a rotation groove 13 is provided on the control block 8, and the outer wall of the part of the screw 7 located in the rotation groove 13 is a smooth curved surface and is rotatably connected to the rotation groove 13. A bearing groove 14 is provided on the inner wall at the bottom of the rotation groove 13, and a bearing 15 is rotatably provided in the bearing groove 14. The inner ring of the bearing 15 is fixedly connected to the outer wall of the screw 7, so that the screw 7 and the control block 8 are rotatably connected, and the control block 8 can move with the movement of the screw 7, and the rotational friction between the screw 7 and the control block 8 can be reduced. Turning the knob 9 drives the screw 7 to rotate, and the screw 7 moves in the first threaded hole 6 under the threaded connection with the first threaded hole 6, thereby driving the control block 8 to move vertically, and the control block 8 applies force to the inclined surface of the mounting plate 4, thereby controlling the movement of the mounting plate 4.

[0022] Specifically, the end of the control block 8 that contacts the inclined surface of the mounting plate 4 is an arc surface, which reduces the wear between the control block 8 and the inclined surface of the mounting plate 4. The two side walls of the control block 8 fit the inner wall of the slide groove 5 to prevent the control block 8 from rotating with the screw 7.

[0023] Specifically, the outer wall of the return block 12 fits with the inner wall of the return groove 10, so that the force of the return spring 11 remains sufficiently stable, and the outer wall of the mounting plate 4 fits with the inner wall of the slide groove 5, so that the mounting plate 4 slides in the slide groove 5 sufficiently stably.

[0024] Specifically, an inlay plate 16 is fixedly provided on one end of the rotating boss 2 and the rotating recess 3 close to the bus duct 1, and a second threaded hole 18 is penetrated through the inlay plate 16. An embedding groove 17 for inserting the inlay plate 16 is provided on the end of the mounting plate 4 away from the bus duct 1, and a third threaded hole 19 is provided on the mounting plate 4 corresponding to the second threaded hole 18 and extending to the bottom of the embedding groove 17. The inlay plate 16 of the rotating boss 2 and the rotating recess 3 is inserted into the embedding groove 17 until the rotating boss 2 and the rotating recess 3 are butted against the mounting plate 4. At this time, the second threaded hole 18 and the third threaded hole 19 are coaxially positioned and can be fixed by screwing in bolts, which can facilitate replacement of the rotating boss 2 or the rotating recess 3 when it is damaged.

[0025] Specifically, the inner wall of the embedding groove 17 fits with the outer wall of the embedding plate 16 to ensure the stability of the installation of the rotating boss 2 or the rotating recess 3. The size of the second threaded hole 18 is consistent with the size of the third threaded hole 19, so that after the bolt is screwed into the third threaded hole 19 and the second threaded hole 18, the rotating boss 2 and the rotating recess 3 are stably fixed.

[0026] A specific application example of this embodiment is:

[0027] When the device is in use, when the boss 2 needs to be rotated to extend, the knob 9 is rotated to drive the screw 7 to rotate. The screw 7 moves downward in the first threaded hole 6 under the threaded connection with the first threaded hole 6, thereby driving the control block 8 to move vertically downward. The control block 8 applies force to the inclined surface of the mounting plate 4, thereby controlling the mounting plate 4 to move away from the bus duct 1. The movement of the mounting plate 4 drives the return block 12 to move in the return groove 10. The movement of the return block 12 compresses the return spring 11. When the boss 2 needs to be retracted, the knob 9 is rotated in the opposite direction to make the control block 8 move vertically upward. Under the elastic force of the return spring 11, as the control block 8 moves upward, the mounting plate 4 moves toward the inner side of the bus duct 1, and the control block 8 is moved upward. The control knob 9 completes the back and forth movement of the rotating boss 2 relative to the bus duct 1, thereby facilitating and accurately adjusting the distance between the threaded portion of the rotating boss 2 and the through hole of the rotating recess 3, and realizing the adjustment of the length of the two adjacent groups of bus ducts connected together. The rotating boss 2 and the rotating recess 3 are detachable, and the rotating boss 2 and the rotating recess 3 can be disassembled by unscrewing the bolts. During installation, the inlay plate 16 of the rotating boss 2 and the rotating recess 3 is inserted into the inlay groove 17 until the rotating boss 2 and the rotating recess 3 are against the mounting plate 4. At this time, the second threaded hole 18 and the third threaded hole 19 are coaxial, and the bolts can be screwed in to fix them. It is convenient to replace the rotating boss 2 or the rotating recess 3 when it is damaged, thereby improving practicality.

[0028] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "top", "inside", "front", "center", "both ends" and the like indicate orientations or positional relationships based on the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0029] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation" and "screw-on" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integrated connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. Unless otherwise clearly defined, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0030] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that modifications may be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A tower crane power supply busbar, comprising a busbar duct (1), a rotating boss (2) and a rotating concave platform (3), characterized in that: The bus duct (1) further comprises a mounting plate (4), wherein the mounting plate (4) is fixedly mounted on one side of the bus duct (1), and a slide groove (5) slidably connected to the mounting plate (4) is provided on the other side of the bus duct (1), and the mounting plate (4) is detachably connected to the rotating boss (2) and the rotating recess (3), and one end of the mounting plate (4) located in the slide groove (5) is an inclined surface, and a first threaded hole (6) is provided on the inner wall of the slide groove (5) and passes through the outer wall of the bus duct (1), and the first threaded hole (6) is internally threadedly connected to a screw ( 7), a knob (9) is fixedly provided at one end of the screw rod (7) located outside the bus duct (1), and a control block (8) is rotatably connected to one end of the screw rod (7) located inside the bus duct (1) and abuts against the inclined surface of the mounting plate (4), and return grooves (10) are symmetrically provided on the inner wall of the slide groove (5), and a return spring (11) is fixedly provided on the inner wall of the return groove (10) away from the first threaded hole (6), and the return spring (11) is fixedly connected to a return block (12) fixedly connected to the side wall of the mounting plate (4).

2. A tower crane power supply busbar according to claim 1, characterized in that: The control block (8) is provided with a rotation groove (13); a portion of the outer wall of the screw rod (7) located in the rotation groove (13) is a smooth curved surface and is rotatably connected to the rotation groove (13); a bearing groove (14) is provided on the inner wall at the bottom of the rotation groove (13); a bearing (15) is rotatably arranged in the bearing groove (14); and an inner ring of the bearing (15) is fixedly connected to the outer wall of the screw rod (7).

3. The tower crane power supply busbar according to claim 1, characterized in that: One end of the control block (8) that contacts the inclined surface of the mounting plate (4) is an arc surface, and the two side walls of the control block (8) fit the inner wall of the slide groove (5).

4. The tower crane power supply busbar according to claim 1, characterized in that: The outer wall of the return block (12) fits in with the inner wall of the return groove (10), and the outer wall of the mounting plate (4) fits in with the inner wall of the slide groove (5).

5. The tower crane power supply busbar according to claim 1, characterized in that: An insert plate (16) is fixedly provided at one end of the rotating boss (2) and the rotating recess (3) close to the bus duct (1), and a second threaded hole (18) is provided through the insert plate (16). An insert groove (17) for inserting the insert plate (16) is provided at one end of the mounting plate (4) away from the bus duct (1), and a third threaded hole (19) is provided on the mounting plate (4) corresponding to the second threaded hole (18) and extending to the bottom of the insert groove (17).

6. A tower crane power supply busbar according to claim 5, characterized in that: The inner wall of the embedding groove (17) fits the outer wall of the embedding plate (16), and the size of the second threaded hole (18) is consistent with the size of the third threaded hole (19).

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