Lifting equipment for electrical equipment installation

Abstract

The utility model provides lifting equipment for electrical equipment installation, which comprises a base, a lifting seat is arranged on the upper side of the base, two first shear plates and two second shear plates are arranged between the lifting seat and the base, the two first shear plates are respectively and rotatably connected with the two second shear plates through rotating shafts, and the two second shear plates are respectively and rotatably connected with the lifting seat through rotating shafts. A transverse plate is installed between the two first shear plates, a jack is rotationally installed in the middle of the transverse plate, two supporting lugs are rotationally installed at the cylinder end of the jack through a shaft rod, a positioning lug is rotationally installed at the lower end of each first shear plate and fixedly connected with the base, and a reinforcing piece is installed between each shaft rod and the corresponding positioning lug. The lifting device has the advantages that counter-acting force borne by the jack is dispersed to multiple portions of the base, and the requirement for the structural strength of the connecting portion of the base and the jack is lowered.

Description

A lifting device for installing electrical equipment Technical Field

[0001] This utility model is a lifting device for electrical equipment installation, belonging to the field of electrical equipment installation. Background Technology

[0002] A jack-driven electrical equipment lifting device, consisting of a scissor-fork support frame, a base, and a lifting seat, is a common and practical auxiliary tool for equipment installation, widely used in the installation of various electrical equipment. When the jack is lifted, the crossing angle of the scissor-fork support frame changes, thereby raising or lowering the lifting seat. Its ingenious structural design allows for a large lifting height within a small space and provides good stability. During the lifting of electrical equipment, the reaction force generated by the equipment on the jack acts on the connection between the jack and the base. Because the connection area between the jack and the base is small, the reaction force on the jack is entirely concentrated at this small connection point, requiring high structural strength at this connection. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this utility model is to provide a lifting device for the installation of electrical equipment to solve the problems mentioned in the background art. This utility model distributes the reaction force of the jack to multiple parts of the base, reducing the structural strength requirements of the connection between the base and the jack.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a lifting device for installing electrical equipment, comprising a base, a lifting seat on the upper side of the base, two first scissor plates and a second scissor plate between the lifting seat and the base, the two first scissor plates being rotatably connected to the two second scissor plates respectively via a rotating shaft, a horizontal plate being installed between the two first scissor plates, a jack being rotatably installed at the middle of the horizontal plate, two lugs being rotatably installed at the cylinder end of the jack via a shaft, the lugs being fixedly connected to the base, the upper end of the first scissor plates being rotatably connected to the lifting seat, a positioning lug being rotatably installed at the lower end of the first scissor plates, the positioning lug being fixedly connected to the base, a reinforcing member being installed between the shaft and the positioning lug, and the two ends of the second scissor plates being connected to the base and the lifting seat respectively via guide members.

[0005] Furthermore, the guide includes a slide block, with slide blocks rotatably mounted on both ends of the second scissor plate. L-shaped guide rails that slide in contact with the slide blocks are provided on both sides of the slide blocks. The L-shaped guide rail closer to the base is connected and fixed to the base, and the L-shaped guide rail closer to the lifting seat is connected and fixed to the lifting seat. The slide block at one end of the second scissor plate is slidably mounted in the space formed by the lifting seat and the corresponding two L-shaped guide rails, and the slide block at the other end of the second scissor plate is slidably mounted in the space formed by the base and the corresponding two L-shaped guide rails.

[0006] Furthermore, the reinforcing member includes a retaining plate, and two symmetrically arranged retaining plates are snapped onto the base. The retaining plates have an L-shaped structure and are connected to the base by multiple first screws. Both sides of the support lug are provided with insertion ears, which are connected and fixed to the retaining plates. The two ends of the shaft are respectively inserted into the two insertion ears. A second mating plate is installed at the end of the retaining plate away from the insertion ears, and a first mating plate that fits against the second mating plate is installed at one end of the positioning ear. The first mating plate is connected to the second mating plate by fasteners formed by multiple sets of second screws and nuts.

[0007] Furthermore, a limiting plate for restricting the position of the second screw head is provided on the side of the second docking plate opposite to the first docking plate. There is a gap between the limiting plate and the second docking plate. The limiting plate is connected and fixed to the clamping plate. One end of the second screw passes through the limiting plate, the second docking plate and the first docking plate in sequence and is threaded with a nut.

[0008] Furthermore, the limiting plate has a plurality of first through holes evenly distributed on one side, the second docking plate has a plurality of second through holes aligned with the first through holes on one side, and the first docking plate has a plurality of third through holes aligned with the second through holes on one side, and the second screw passes through the channel formed by the first through holes, the second through holes and the third through holes.

[0009] Furthermore, the first docking plate and the positioning ear are integrally formed, and the second docking plate and the clamping plate are integrally formed.

[0010] Furthermore, the upper surface of the card plate is evenly provided with multiple screw holes, and the area of ​​the upper surface of the base covered by the card plate is provided with multiple positioning holes that cooperate with the screw holes. The first screw is threaded into the screw hole, and one end of the first screw is inserted into the positioning hole.

[0011] Furthermore, a rim is installed at the edge of the upper surface of the lifting seat, and the rim has a "U" shaped structure.

[0012] Furthermore, a first rectangular opening is formed by a recess in the middle of the upper surface of the base, a second rectangular opening is formed by a recess in the middle of the upper surface of the lifting seat, a protective plate is provided on the upper side of the lifting seat, a plurality of column heads are evenly installed on the lower surface of the protective plate, a plurality of pin holes are evenly opened on the upper surface of the lifting seat, the column heads are inserted into the pin holes, and a third rectangular opening is opened in the middle of the upper surface of the protective plate, which is aligned with the second rectangular opening.

[0013] Furthermore, the parts of the lifting seat that contact the corresponding slide and the parts of the base that contact the corresponding slide are recessed to form grooves, and a portion of the slide is slidably installed in the grooves.

[0014] The beneficial effects of this utility model are:

[0015] a. After the clamping plate is attached to the base, the end of the shaft is inserted into the insertion ear. Then, multiple first screws are used to limit the relative position of the clamping plate and the base. Then, the clamping plate and the positioning ear are connected by fasteners formed by second screws and nuts. Thus, during the extension and retraction of the jack, the reaction force of the electrical equipment on the lifting seat on the jack is distributed to multiple points on the base through the clamping plate. At the same time, the clamping plate and the base cooperate with each other to improve the stability of the positioning ear installation, so that the reaction force on the jack is distributed to multiple points on the base, reducing the structural strength requirements of the connection between the base and the jack.

[0016] b. When using the fastener formed by the second screw and nut to connect the first mating plate and the second mating plate, the second screw passes through the limiting plate, the second mating plate and the first mating plate and then the nut is screwed on. Under the restriction of the limiting plate, there is a gap between the head of the second screw and the second mating plate. When the second screw and nut are difficult to separate using conventional tools, the second screw can be cut off using the space between the second mating plate and the limiting plate, which facilitates the subsequent separation of the clamping plate and the positioning ear.

[0017] c. Insert a protective plate into the lifting seat, so that when the electrical equipment slides on the surface of the lifting seat, the protective plate will prevent the electrical equipment from causing wear on the surface of the lifting seat, thus protecting the lifting seat. Attached Figure Description

[0018] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0019] Figure 1 is a structural schematic diagram of a lifting device for installing electrical equipment according to this utility model;

[0020] Figure 2 is a perspective view of a lifting device for installing electrical equipment according to this utility model.

[0021] Figure 3 is an enlarged view of point A in Figure 1;

[0022] Figure 4 is a schematic diagram of the assembly of the first scissor plate, jack and clamping plate in the lifting device for electrical equipment installation according to the present invention.

[0023] Figure 5 is a schematic diagram of the assembly of the L-shaped guide rail, positioning ear and base in a lifting device for installing electrical equipment according to this utility model.

[0024] In the diagram: 1-base, 2-clamping plate, 3-first scissor plate, 4-slide seat, 5-L-shaped guide rail, 6-insertion ear, 7-shaft rod, 8-support ear, 9-jack, 10-second scissor plate, 11-lifting seat, 12-edge, 13-positioning ear, 14-first docking plate, 15-second docking plate, 16-second screw, 17-limiting plate, 18-first screw, 19-horizontal plate, 20-positioning hole. Detailed Implementation

[0025] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0026] Please refer to Figures 1, 2, and 5. This utility model provides a technical solution: a lifting device for installing electrical equipment, including a base 1, a lifting seat 11 on the upper side of the base 1, a rim 12 installed at the edge of the upper surface of the lifting seat 11, the rim 12 having a "U"-shaped structure, a first rectangular opening formed by a recess in the middle of the upper surface of the base 1, and a second rectangular opening formed by a recess in the middle of the upper surface of the lifting seat 11. The design of the first and second rectangular openings reduces the material consumption in the production of the base 1 and the lifting seat 11. The lifting seat 11 has a protective plate 21 on its upper side. Multiple column heads are evenly installed on the lower surface of the protective plate 21. Multiple pin holes are evenly opened on the upper surface of the lifting seat 11. The column heads are inserted into the pin holes. A third rectangular opening is opened in the middle of the upper surface of the protective plate 21, which is aligned with the second rectangular opening. The protective plate 21 is inserted into the lifting seat 11. When the electrical equipment slides on the surface of the lifting seat 11, the protective plate 21 blocks the electrical equipment from causing wear on the surface of the lifting seat 11, thus protecting the lifting seat 11.

[0027] Referring to Figures 1-5, two first shear plates 3 and second shear plates 10 are provided between the lifting seat 11 and the base 1. The two first shear plates 3 are rotatably connected to the two second shear plates 10 respectively via rotating shafts. A horizontal plate 19 is installed between the two first shear plates 3. A jack 9 is rotatably installed in the middle of the horizontal plate 19. Two lugs 8 are rotatably installed on the cylinder end of the jack 9 via a shaft 7. The lugs 8 are connected and fixed to the base 1. The upper end of the first shear plate 3 is rotatably connected to the lifting seat 11. A positioning lug 13 is rotatably installed on the lower end of the first shear plate 3. The positioning lug 13 is connected and fixed to the base 1. Slide seats 4 are rotatably installed on both ends of the second shear plates 10. L-shaped guide rails 5 are provided on both sides of the slide seats 4 for sliding contact with the slide seats 4. The L-shaped guide rail 5 is connected and fixed to the base 1. The L-shaped guide rail 5 near the lifting seat 11 is connected and fixed to the lifting seat 11. The slide 4 at one end of the second scissor plate 10 is slidably installed in the space formed by the lifting seat 11 and the corresponding two L-shaped guide rails 5. The slide 4 at the other end of the second scissor plate 10 is slidably installed in the space formed by the base 1 and the corresponding two L-shaped guide rails 5. The parts of the lifting seat 11 that contact the corresponding slide 4 and the parts of the base 1 that contact the corresponding slide 4 are recessed to form grooves. A part of the slide 4 is slidably installed in the grooves to control the extension and retraction of the jack 9, thereby changing the height of the scissor fork support frame formed by the first scissor plate 3 and the second scissor plate 10. At this time, the distance between the lifting seat 11 and the base 1 changes.

[0028] Referring to Figures 1-5, two symmetrically arranged clamping plates 2 are snapped onto the base 1. The clamping plates 2 have an L-shaped structure and are connected to the base 1 by multiple first screws 18. Multiple screw holes are evenly distributed on the upper surface of the clamping plates 2. Multiple positioning holes 20 that mate with the screw holes are distributed on the upper surface of the base 1, covering the area of ​​the clamping plates 2. The first screws 18 are threaded into the screw holes, with one end of each screw inserted into the positioning hole 20. Insertion ears 6 are provided on both sides of the support lug 8, and are connected and fixed to the clamping plates 2. Both ends of the shaft 7 are respectively inserted into the two insertion ears 6. A second mating plate 15 is installed on the end of the clamping plate 2 away from the insertion ears 6. A first mating plate 14 that fits against the second mating plate 15 is installed on one end of the positioning ear 13. The first mating plate 14 is connected to the second mating plate 15 by fasteners formed by multiple sets of second screws 16 and nuts. Multiple first through-holes are evenly distributed on one side of the limiting plate 17. The second connecting plate 15 has multiple second through holes aligned with the first through hole on one side, and the first connecting plate 14 has multiple third through holes aligned with the second through holes on one side. The second screw 16 passes through the channel formed by the first through hole, the second through hole, and the third through hole, so that after the clamping plate 2 is clamped onto the base 1, the end of the shaft 7 is inserted into the insertion ear 6. Then, multiple first screws 18 are used to limit the relative position of the clamping plate 2 and the base 1. Then, the clamping plate 2 and the positioning ear 13 are connected by fasteners formed by the second screw 16 and the nut. Thus, during the extension and retraction of the jack 9, the reaction force of the electrical equipment on the lifting seat 11 on the jack 9 is distributed to multiple points on the base 1 through the clamping plate 2. At the same time, the clamping plate 2 and the base 1 cooperate with each other to improve the stability of the installation of the positioning ear 13, so that the reaction force on the jack 9 is distributed to multiple points on the base 1, reducing the structural strength requirements of the connection between the base 1 and the jack 9.

[0029] Referring to Figures 1 and 3-5, the first mating plate 14 and the positioning ear 13 are integrally formed, and the second mating plate 15 and the clamping plate 2 are integrally formed. A limiting plate 17 for limiting the position of the head of the second screw 16 is provided on the side of the second mating plate 15 opposite to the first mating plate 14. There is a gap between the limiting plate 17 and the second mating plate 15. The limiting plate 17 is connected and fixed to the clamping plate 2. One end of the second screw 16 passes through the limiting plate 17, the second mating plate 15, and the first mating plate 14 in sequence, and is threaded with a nut. When the fastener formed by the screw 16 and the nut connects the first mating plate 14 and the second mating plate 15, the second screw 16 passes through the limiting plate 17, the second mating plate 15 and the first mating plate 14 and then the nut is screwed on. Under the restriction of the limiting plate 17, there is a gap between the head of the second screw 16 and the second mating plate 15. When the second screw 16 and the nut are difficult to separate using conventional tools, the second screw 16 can be cut off by using the space between the second mating plate 15 and the limiting plate 17, which facilitates the subsequent separation of the clamping plate 2 and the positioning ear 13.

[0030] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A lifting device for installing electrical equipment, comprising a base (1), characterized in that: The base (1) is provided with a lifting seat (11) on the upper side. Two first scissor plates (3) and two second scissor plates (10) are provided between the lifting seat (11) and the base (1). The two first scissor plates (3) are rotatably connected to the two second scissor plates (10) respectively through a rotating shaft. A horizontal plate (19) is installed between the two first scissor plates (3). A jack (9) is rotatably installed in the middle of the horizontal plate (19). Two support ears (8) are rotatably installed on the cylinder end of the jack (9) through a shaft (7). The support ears (8) are connected and fixed to the base (1). The upper end of the first scissor plate (3) is rotatably connected to the lifting seat (11). A positioning ear (13) is rotatably installed on the lower end of the first scissor plate (3). The positioning ear (13) is connected and fixed to the base (1). A reinforcing member is installed between the shaft (7) and the positioning ear (13). The two ends of the second scissor plate (10) are connected to the base (1) and the lifting seat (11) respectively through guide members.

2. The lifting device for installing electrical equipment according to claim 1, characterized in that: The guide includes a slide (4), and slides (4) are rotatably mounted on both ends of the second scissor plate (10). L-shaped guide rails (5) that slide in contact with the slide (4) are provided on both sides of the slide (4). The L-shaped guide rail (5) near the base (1) is connected and fixed to the base (1), and the L-shaped guide rail (5) near the lifting seat (11) is connected and fixed to the lifting seat (11). The slide (4) at one end of the second scissor plate (10) is slidably installed in the space formed by the lifting seat (11) and the two corresponding L-shaped guide rails (5). The slide (4) at the other end of the second scissor plate (10) is slidably installed in the space formed by the base (1) and the two corresponding L-shaped guide rails (5).

3. The lifting device for installing electrical equipment according to claim 1, characterized in that: The reinforcing member includes a clamping plate (2). Two symmetrically arranged clamping plates (2) are clamped on the base (1). The clamping plate (2) has an L-shaped structure. The clamping plate (2) is connected to the base (1) by multiple first screws (18). Both sides of the support ear (8) are provided with insertion ears (6). The insertion ears (6) are connected and fixed to the clamping plate (2). The two ends of the shaft (7) are respectively inserted into the two insertion ears (6). A second docking plate (15) is installed at the end of the clamping plate (2) away from the insertion ears (6). A first docking plate (14) that fits against the second docking plate (15) is installed at one end of the positioning ear (13). The first docking plate (14) is connected to the second docking plate (15) by fasteners formed by multiple sets of second screws (16) and nuts.

4. An electrical equipment installation lifting apparatus according to claim 3, characterised in that: The second docking plate (15) is provided with a limiting plate (17) on the side opposite to the first docking plate (14) to limit the position of the head of the second screw (16). There is a gap between the limiting plate (17) and the second docking plate (15). The limiting plate (17) is connected and fixed to the clamping plate (2). One end of the second screw (16) passes through the limiting plate (17), the second docking plate (15) and the first docking plate (14) in sequence and is then threaded with a nut.

5. A lifting device for installing electrical equipment according to claim 4, characterized in that: The limiting plate (17) has a plurality of first through holes evenly opened on one side, the second docking plate (15) has a plurality of second through holes aligned with the first through holes on one side, the first docking plate (14) has a plurality of third through holes aligned with the second through holes on one side, and the second screw (16) passes through the channel formed by the first through holes, the second through holes and the third through holes.

6. A lifting device for installing electrical equipment according to claim 4, characterized in that: The first docking plate (14) and the positioning ear (13) are integrally formed, and the second docking plate (15) and the clamping plate (2) are integrally formed.

7. A lifting device for installing electrical equipment according to claim 3, characterized in that: The upper surface of the card plate (2) is evenly provided with multiple screw holes, and the area covered by the card plate (2) on the upper surface of the base (1) is provided with multiple positioning holes (20) that cooperate with the screw holes. The first screw (18) is threaded into the screw hole, and one end of the first screw (18) is inserted into the positioning hole (20).

8. A lifting device for installing electrical equipment according to claim 1, characterized in that: The lifting seat (11) has a rim (12) installed at the edge of its upper surface. The rim (12) has a "U" shaped structure.

9. An electrical equipment installation lifting apparatus according to claim 1, characterised in that: The base (1) has a recessed middle position on the upper surface to form a first rectangular opening, and the lifting seat (11) has a recessed middle position on the upper surface to form a second rectangular opening. The lifting seat (11) has a guard plate (21) on its upper side. Multiple column heads are evenly installed on the lower surface of the guard plate (21). Multiple pin holes are evenly opened on the upper surface of the lifting seat (11). The column heads are inserted into the pin holes. A third rectangular opening is opened at the middle position on the upper surface of the guard plate (21) and is aligned with the second rectangular opening.

10. An electrical equipment installation lifting apparatus according to claim 1, characterised in that: The part of the lifting seat (11) that contacts the corresponding slide (4) and the part of the base (1) that contacts the corresponding slide (4) are recessed to form a groove, and a part of the slide (4) is slidably installed in the groove.

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