Auxiliary lifting device for transformer installation

Abstract

The present invention discloses a transformer installation auxiliary lifting device, which relates to the field of transformer auxiliary installation, and includes a lift base, a lift seat, a drive motor, a first threaded rod, a movable rod, a first connecting block, a first connecting rod, a second connecting rod, a second connecting block, and a protective mechanism. The present invention provides an unlocking mechanism, wherein the output end of the drive motor rotates through mechanical transmission to drive the transformer upward. Since two racks are provided, the movement of the two racks drives the rotation of a third spur gear, which rotates through mechanical transmission to drive the transformer upward. Simultaneously, a protective column resets and moves. This structure facilitates the retraction of the protective column protecting the transformer into the interior of the lift seat when the transformer rises to a preset height. Simultaneously, the movable plate moves to drive the transformer upward. The transformer moves to a certain height, which facilitates the horizontal handling of the raised transformer by staff.

Description

Technical Field

[0001] The invention relates to the field of transformer auxiliary installation, in particular to a transformer installation auxiliary lifting device. Background Art

[0002] A transformer is a static electrical device used to convert AC voltage and current and transmit AC power. It realizes electrical energy transmission based on the principle of electromagnetic induction. Transformers can be divided into power transformers, test transformers, instrument transformers and special-purpose transformers according to their uses: power transformers are necessary equipment for power transmission and distribution, and power distribution to power users; test transformers are equipment for withstand voltage (boost) tests on electrical equipment; instrument transformers are used for electrical measurement and relay protection of distribution systems (PT, CT); special-purpose transformers include electric furnace transformers for smelting, welding transformers, rectifier transformers for electrolysis, small voltage-regulating transformers, etc. Current transformers need to be raised to a certain height during installation. Due to the heavy weight of the transformer itself, a lift is often used for lifting the transformer. The lifting work platform is a multi-functional lifting mechanical equipment, which can be divided into fixed and mobile types, guide rail type, crank arm type, scissors type, chain type, loading and unloading platform, etc.

[0003] At present, when a transformer is lifted or lowered, a lift is mostly used to lift the transformer. The transformer needs to be placed on the lifting seat of the lift before the lifting operation is performed. During the movement of the transformer, the staff needs to manually support the transformer to avoid the center of gravity shifting during the lifting operation of the transformer. When the transformer rises to a predetermined height, the staff needs to carry the transformer horizontally by hand. The transformer is carried horizontally from the lifting seat to the bracket used to support the transformer. The transformer bracket is fixed on the utility pole before the transformer. When the transformer is manually carried, the bottom end of the transformer fits into the top end of the lifting seat, and the space between the bottom end of the transformer and the lifting seat is small. It is not easy to reach into the bottom end of the transformer, and thus it is not easy to carry the raised transformer. Summary of the Invention

[0004] The purpose of the present invention is to provide a transformer installation auxiliary lifting device in order to solve the problem that the gap between the transformer and the lifting seat is small and inconvenient to carry.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solution: a transformer installation auxiliary lifting device, comprising a lifting base, a lifting base for placing the transformer is provided at the top of the lifting base, a driving motor for providing power is fixed inside the lifting base by bolts, an output end of the driving motor is connected to a first threaded rod through a coupling, an outer wall of the first threaded rod is connected to a moving rod by a thread, two moving rods are provided, first connecting blocks are fixed on both sides of the moving rod by welding, a first connecting rod is rotatably connected to the top of the first connecting block, a second connecting rod is connected to the inside of the first connecting rod by a rotating shaft, and a second connecting block is rotatably connected to the top of the second connecting rod, a protective mechanism, the protective mechanism comprises a movable plate provided at the top of the lifting base, an L-shaped rod extending into the interior of the lifting base is fixed to the bottom end of the movable plate by bolts, a protective column extending into the interior of the lifting base for protecting the transformer at the top of the lifting base is provided at the top of the lifting base, the protective column is located on one side of the L-shaped rod, the bottom end of the protective column is connected to the second threaded rod by a thread, and the bottom end of the second threaded rod is fixed to a second spur gear by welding;

[0006] The unlocking mechanism includes an extrusion column fixed to the bottom end of the movable plate by welding, the bottom end of the extrusion column is sleeved with a movable column, the outer wall of the movable column is connected to a rotating column by a thread, and the bottom end of the rotating column is fixed with a third spur gear by welding.

[0007] As a further solution of the present invention: the protection mechanism also includes an extrusion block fixed to both sides of the L-shaped rod by welding, the bottom end of the extrusion block is fixed with a sliding column by welding, the bottom end of the sliding column is sleeved with a rotating column, the bottom end of the rotating column is fixed with a first spur gear by welding, and the first spur gear is meshed with the second spur gear.

[0008] As a further solution of the present invention: the first threaded rod is rotatably connected to the inner wall of the elevator base through a bearing, and rollers are provided on both sides of the moving rod, the interior of the elevator base is provided with limiting rails matching the rollers on both sides of the moving rod, and the interior of the lifting seat is provided with limiting sliding grooves matching the second connecting block.

[0009] As a further solution of the present invention: two L-shaped rods are provided and symmetrically arranged at both ends of the bottom end of the movable plate, and a moving groove matching the moving track of the L-shaped rod and the extrusion block is provided inside the lifting seat.

[0010] As a further solution of the present invention: the bottom end of the first spur gear is rotatably connected to the inner wall of the lifting seat via a rotating shaft, and the bottom end of the second spur gear is rotatably connected to the inner wall of the lifting seat via a rotating shaft.

[0011] As a further solution of the present invention: the outer wall of the sliding column is provided with a ball, the inner wall of the rotating column is formed with a spiral groove that matches the movement trajectory of the ball on the outer wall of the sliding column, and the outer wall of the protective column is formed with a protrusion, and the inner wall of the lifting seat is provided with a sliding groove that matches the protrusion on the outer wall of the protective column.

[0012] As a further solution of the present invention: the unlocking mechanism also includes a cross bar fixed between the two second connecting blocks by welding, a rack is fixed to one end of the cross bar by welding, the third spur gear and the rack are at the same horizontal height, and a spring is provided at the bottom end of the extrusion column, and the spring is located inside the moving column.

[0013] As a further solution of the present invention: a protruding disk is formed at the bottom end of the extrusion column, and a movable slide matching the protruding disk at the bottom end of the extrusion column is provided inside the movable column, and the bottom end of the third spur gear is rotatably connected to the inner wall of the lifting seat through a rotating shaft.

[0014] As a further solution of the present invention: a limiting L rod is provided on the outer wall of the movable column, and a limiting groove matching the moving track of the limiting L rod on the outer wall of the movable column is provided on the top of the lifting seat.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention provides an unlocking mechanism, and the output end of the driving motor rotates to drive the transformer upward through mechanical transmission. Since two racks are provided, the movement of the two racks drives the third spur gear to rotate, and the rotation of the third spur gear drives the transformer upward through mechanical transmission, and at the same time the protective column resets and moves. This structure is conducive to retracting the protective column protecting the transformer into the interior of the lifting seat when the transformer rises to a preset height, and at the same time the moving plate moves to drive the transformer upward. The transformer moves and rises to a certain height, which is convenient for the staff to perform horizontal transportation operations on the raised transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the internal structure of the lift base and lift seat of the present invention;

[0019] Figure 3 For the present invention Figure 2 A in the figure shows the enlarged structural diagram;

[0020] Figure 4 This is a schematic diagram of the internal structure of the lift base and lift seat from another perspective of the present invention;

[0021] Figure 5 For the present invention Figure 4 A schematic diagram of the structure at point B in FIG.

[0022] Figure 6 This is a schematic diagram of the internal explosion structure of the rotating column and the moving column of the present invention;

[0023] Figure 7 Schematic diagram of the internal structure of the rotating column of the present invention.

[0024] In the figure: 1. Lifter base; 2. Lifting seat; 3. Driving motor; 4. Protection mechanism; 401. Moving plate; 402. L-shaped rod; 403. Protection column; 404. Extrusion block; 405. Sliding column; 406. Rotating column; 407. First spur gear; 408. Second spur gear; 409. Second threaded rod; 5. Unlocking mechanism; 501. Extrusion column; 502. Rotating column; 503. Third spur gear; 504. Cross bar; 505. Rack; 506. Spring; 507. Moving column; 508. Limiting L rod; 6. First threaded rod; 7. Moving rod; 8. First connecting block; 9. First connecting rod; 10. Second connecting rod; 11. Second connecting block. DETAILED DESCRIPTION

[0025] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and should not be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, they can be fixedly connected, detachably connected, or connected in one piece; they can be mechanically connected or electrically connected; they can be directly connected, or indirectly connected through an intermediate medium, or they can be internal connections between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following describes an embodiment of the present invention based on its overall structure.

[0027] See also Figures 1 to 7 In an embodiment of the present invention, a transformer installation auxiliary lifting device includes a lift base 1, a lifting seat 2 for placing a transformer is provided at the top of the lift base 1, a driving motor 3 for providing power is fixed to the interior of the lift base 1 by bolts, an output end of the driving motor 3 is connected to a first threaded rod 6 through a coupling, an outer wall of the first threaded rod 6 is connected to a moving rod 7 through a thread, two moving rods 7 are provided, and first connecting blocks 8 are fixed on both sides of the moving rod 7 by welding, a first connecting rod 9 is rotatably connected to the top of the first connecting block 8, and a second connecting rod 9 is connected to the interior of the first connecting rod 9 through a rotating shaft. Rod 10, the top end of the second connecting rod 10 is rotatably connected to the second connecting block 11, and the protection mechanism 4 includes a movable plate 401 provided on the top of the lifting base 2. The bottom end of the movable plate 401 is fixed by bolts to an L-shaped rod 402 extending into the interior of the lifting base 2. The top end of the lifting base 2 is provided with a protection column 403 extending into the interior of the lifting base 2 for protecting the transformer on the top of the lifting base 2. The protection column 403 is located on one side of the L-shaped rod 402. The bottom end of the protection column 403 is threadedly connected to a second threaded rod 409. The bottom end of the second threaded rod 409 is fixed by welding to a second spur gear 408;

[0028] The unlocking mechanism 5 includes an extrusion column 501 fixed to the bottom end of the movable plate 401 by welding, the bottom end of the extrusion column 501 is sleeved with a movable column 507, the outer wall of the movable column 507 is connected to a rotating column 502 by a thread, and the bottom end of the rotating column 502 is fixed with a third spur gear 503 by welding.

[0029] In this embodiment: by driving the motor 3, the first threaded rod 6, the moving rod 7, the first connecting block 8, the first connecting rod 9, the second connecting rod 10 and the second connecting block 11, it is convenient to lift the transformer on the top of the lifting seat 2; by setting the protection mechanism 4, it is convenient to protect the transformer placed on the top of the movable plate 401, and avoid the displacement of the transformer when the lifting seat 2 is lifted and lowered. Compared with the traditional manual transformer support, the stability of the transformer during lifting is improved; by setting the unlocking mechanism 5, it is convenient to retract the protection column 403 protecting the transformer into the inside of the lifting seat 2 when the transformer rises to a preset height; at the same time, the moving plate 401 moves to drive the transformer upward, and the transformer moves to a certain height, which is convenient for the staff to carry the raised transformer horizontally.

[0030] Please refer to Figures 1 to 4The protection mechanism 4 also includes an extrusion block 404 fixed to both sides of the L-shaped rod 402 by welding, and a sliding column 405 is fixed to the bottom end of the extrusion block 404 by welding, and a rotating column 406 is sleeved on the bottom end of the sliding column 405. The bottom end of the rotating column 406 is fixed with a first spur gear 407 by welding, and the first spur gear 407 is meshed with the second spur gear 408; the first threaded rod 6 is rotatably connected to the inner wall of the elevator base 1 through a bearing, and rollers are provided on both sides of the moving rod 7, and the interior of the elevator base 1 is provided with a limiting track matching the rollers on both sides of the moving rod 7, and the interior of the lifting seat 2 is provided with a limiting sliding groove matching the second connecting block 11. ; Two L-shaped rods 402 are provided, and are symmetrically arranged at both ends of the bottom end of the movable plate 401. The interior of the lifting seat 2 is provided with a moving groove that matches the moving trajectory of the L-shaped rod 402 and the extrusion block 404; the bottom end of the first spur gear 407 is rotatably connected to the inner wall of the lifting seat 2 through a rotating shaft, and the bottom end of the second spur gear 408 is rotatably connected to the inner wall of the lifting seat 2 through a rotating shaft; the outer wall of the sliding column 405 is provided with a ball bearing, and the inner wall of the rotating column 406 is formed with a spiral groove that matches the moving trajectory of the ball bearing on the outer wall of the sliding column 405, and the outer wall of the protective column 403 is formed with a protrusion, and the inner wall of the lifting seat 2 is provided with a sliding groove that matches the protrusion on the outer wall of the protective column 403.

[0031] In this embodiment, when the transformer needs to be lifted, the transformer to be lifted is first placed on the top of the movable plate 401. The transformer squeezes the movable plate 401 and moves downward. The movement of the movable plate 401 drives the L-shaped rod 402 to move. The movement of the L-shaped rod 402 drives the squeezing block 404 to move. The movement of the squeezing block 404 drives the sliding column 405 to move downward. The movement of the sliding column 405 drives the ball on the outer wall of the sliding column 405 to move downward. The ball moves in the spiral groove on the inner wall of the rotating column 406, thereby driving the rotating column 406 to rotate. The rotation of the rotating column 406 drives the first spur gear 407 to rotate. The rotation of the first spur gear 407 drives the second spur gear 408 to rotate. Since the diameter of the first spur gear 407 is larger than the diameter of the second spur gear 408, the rotation of the first spur gear 407 drives the second spur gear 408 to rotate more circles, and the rotation of the second spur gear 408 drives the second threaded rod 409 to rotate, and the rotation of the second threaded rod 409 drives the protective column 403 to move upward, and the protective column 403 is moved out from the inside of the lifting base 2, thereby protecting both ends of the transformer. This structure is conducive to the protection of the transformer placed on the top of the movable plate 401, and avoids the transformer from being offset when the lifting base 2 is lifted and lowered. Compared with the traditional manual transformer support, the stability of the transformer during lifting is improved.

[0032] Please refer to Figures 1 to 4The unlocking mechanism 5 also includes a cross bar 504 fixed between the two second connecting blocks 11 by welding, and a rack 505 is fixed to one end of the cross bar 504 by welding. The third spur gear 503 and the rack 505 are at the same horizontal height. The bottom end of the extrusion column 501 is provided with a spring 506, and the spring 506 is located inside the moving column 507; the bottom end of the extrusion column 501 is formed with a protruding disk, and the interior of the moving column 507 is provided with a moving slide matching the protruding disk at the bottom end of the extrusion column 501. The bottom end of the third spur gear 503 is rotatably connected to the inner wall of the lifting seat 2 through a rotating shaft; the outer wall of the moving column 507 is provided with a limiting L rod 508, and the top of the lifting seat 2 is provided with a limiting groove matching the moving trajectory of the limiting L rod 508 on the outer wall of the moving column 507.

[0033] In this embodiment, when the transformer is lifted, the driving motor 3 works, and the output end of the driving motor 3 rotates to drive the first threaded rod 6 to rotate. The rotation of the first threaded rod 6 drives the two moving rods 7 to move toward each other. The movement of the moving rod 7 drives the two first connecting blocks 8 to move toward each other. The movement of the first connecting block 8 drives the first connecting rod 9 and the second connecting rod 10 to rotate. The rotation of the first connecting rod 9 and the second connecting rod 10 drives the two second connecting blocks 11 to move toward each other. The movement of the second connecting block 11 drives the cross bar 504 to move. The movement of the cross bar 504 drives the rack 505 to move. The second connecting blocks 11 move toward each other and simultaneously drive the lifting seat 2 to move upward. The movement of the lifting seat 2 drives the moving plate 401 to move. The movement of the moving plate 401 drives the transformer to move upward. This structure is convenient for the lifting and lowering operation of the transformer. After the transformer is placed on the top of the moving plate 401, the moving plate 401 moves downward. The movement of the moving plate 401 drives the extrusion column 501 to move downward, and the spring 506 is squeezed. When the transformer rises to a predetermined position, the rack 505 moves and aligns with the first The three spur gears 503 are engaged, and the rack 505 moves to drive the third spur gear 503 to rotate. Since there are two racks 505, the movement of the two racks 505 drives the third spur gear 503 to rotate, thereby increasing the rotational force of the third spur gear 503. The rotation of the third spur gear 503 drives the rotating column 502 to rotate, and the rotation of the rotating column 502 drives the moving column 507 to move upward. When the moving column 507 moves upward, the squeezing spring 506 and the squeezing column 501 move upward. The squeezing column 501 moves to drive the moving plate 401 to move upward. The movement of the moving plate 401 drives the transformer to move upward. At the same time, the movement of the moving plate 401 drives multiple protective columns 403 to reset and move through mechanical transmission. The protective columns 403 reset and move and retract into the interior of the lifting base 2. This structure is conducive to retracting the protective columns 403 protecting the transformer into the interior of the lifting base 2 when the transformer rises to a preset height. At the same time, the movement of the moving plate 401 drives the transformer upward. The transformer moves to a certain height, which is convenient for the staff to perform horizontal transportation operations on the raised transformer.

[0034] The above is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A transformer installation auxiliary lifting device, comprising a lifting base (1), a protection mechanism (4), and an unlocking mechanism (5), wherein a lifting seat (2) for placing a transformer is provided at the top of the lifting base (1), a driving motor (3) for providing power is fixed inside the lifting base (1) by bolts, an output end of the driving motor (3) is connected to a first threaded rod (6) through a coupling, an outer wall of the first threaded rod (6) is connected to a moving rod (7) by a thread, two moving rods (7) are provided, first connecting blocks (8) are fixed on both sides of the moving rod (7) by welding, a top end of the first connecting block (8) is rotatably connected to a first connecting rod (9), an interior of the first connecting rod (9) is connected to a second connecting rod (10) by a rotating shaft, and a top end of the second connecting rod (10) is rotatably connected to a second connecting block (11), characterized in that A protection mechanism (4), the protection mechanism (4) comprising a movable plate (401) arranged at the top of the lifting seat (2), the bottom end of the movable plate (401) being fixed with an L-shaped rod (402) extending into the interior of the lifting seat (2) by means of bolts, the top end of the lifting seat (2) being provided with a protection column (403) extending into the interior of the lifting seat (2) for protecting a transformer placed on the top end of the lifting seat (2), the protection column (403) being located on one side of the L-shaped rod (402), the bottom end of the protection column (403) being connected with a second threaded rod (409) by means of a thread, and the bottom end of the second threaded rod (409) being fixed with a second spur gear (408) by means of welding; An unlocking mechanism (5), the unlocking mechanism (5) comprising an extrusion column (501) fixed to the bottom end of the movable plate (401) by welding, a movable column (507) being sleeved on the bottom end of the extrusion column (501), a rotating column (502) being threadedly connected to the outer wall of the movable column (507), and a third spur gear (503) being fixed to the bottom end of the rotating column (502) by welding; The unlocking mechanism (5) further comprises a crossbar (504) fixed between the two second connecting blocks (11) by welding, a rack (505) being fixed to one end of the crossbar (504) by welding, the third spur gear (503) and the rack (505) being at the same level, a spring (506) being provided at the bottom end of the extrusion column (501), and the spring (506) being located inside the moving column (507).

2. The transformer installation auxiliary lifting device according to claim 1, characterized in that: The protection mechanism (4) further comprises an extrusion block (404) fixed to both sides of the L-shaped rod (402) by welding, a sliding column (405) being fixed to the bottom end of the extrusion block (404) by welding, a rotating column (406) being sleeved on the bottom end of the sliding column (405), a first spur gear (407) being fixed to the bottom end of the rotating column (406) by welding, and the first spur gear (407) being meshed with a second spur gear (408).

3. The transformer installation auxiliary lifting device according to claim 1, characterized in that: The first threaded rod (6) is rotatably connected to the inner wall of the elevator base (1) through a bearing, and rollers are provided on both sides of the moving rod (7). The interior of the elevator base (1) is provided with a limiting track that matches the rollers on both sides of the moving rod (7), and the interior of the lifting seat (2) is provided with a limiting sliding groove that matches the second connecting block (11).

4. The transformer installation auxiliary lifting device according to claim 2, characterized in that: Two L-shaped rods (402) are provided and symmetrically arranged at the two ends of the bottom end of the movable plate (401). The interior of the lifting seat (2) is provided with a moving groove that matches the moving track of the L-shaped rod (402) and the extrusion block (404).

5. The transformer installation auxiliary lifting device according to claim 2, characterized in that: The bottom end of the first spur gear (407) is rotatably connected to the inner wall of the lifting seat (2) via a rotating shaft, and the bottom end of the second spur gear (408) is rotatably connected to the inner wall of the lifting seat (2) via a rotating shaft.

6. The transformer installation auxiliary lifting device according to claim 2, characterized in that: The outer wall of the sliding column (405) is provided with a ball bearing, the inner wall of the rotating column (406) is formed with a spiral groove that matches the movement trajectory of the ball bearing on the outer wall of the sliding column (405), and the outer wall of the protective column (403) is formed with a protrusion, and the inner wall of the lifting seat (2) is provided with a sliding groove that matches the protrusion on the outer wall of the protective column (403).

7. The transformer installation auxiliary lifting device according to claim 1, characterized in that: The bottom end of the extrusion column (501) is formed with a protruding disc, and the interior of the movable column (507) is provided with a movable slide matching the protruding disc at the bottom end of the extrusion column (501). The bottom end of the third spur gear (503) is rotatably connected to the inner wall of the lifting seat (2) via a rotating shaft.

8. The transformer installation auxiliary lifting device according to claim 1, characterized in that: The outer wall of the movable column (507) is provided with a limiting L-rod (508), and the top end of the lifting seat (2) is provided with a limiting groove that matches the moving track of the limiting L-rod (508) on the outer wall of the movable column (507).

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