A special tool for lifting outdoor high-voltage branch boxes

Abstract

This utility model discloses a special tool for lifting outdoor high-voltage branch boxes, including a lifting device that is fitted onto the high-voltage branch box during the lifting process. The lifting device includes: a main body, a lifting plate, a first horizontal plate, a load-bearing rod, and a connecting frame. The main body, the load-bearing rod, and the connecting frame form a cuboid frame structure. The connecting frame is connected to the main body, and the first horizontal rod serves as an axis, allowing the connecting frame to rotate around the axis. In this utility model, by adjusting the spacing between the load-bearing rods, the entire lifting device is fitted onto the branch box from top to bottom. By readjusting the spacing between the load-bearing rods and connecting the load-bearing rods and the connecting frame, the branch box is fixed inside the lifting device, effectively preventing the branch box from falling and being damaged, and improving work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of power transmission technology in mines, and in particular to a special tool for lifting outdoor high-voltage branch boxes. Background Technology

[0002] High-voltage branch boxes are crucial equipment in power systems used for branching high-voltage cables. They serve as intermediate components connecting cables to each other or to other electrical equipment. Their connection methods are simple, convenient, compact, neat, and flexible, offering features such as full insulation, full enclosure, corrosion resistance, maintenance-free operation, and high reliability. Therefore, they are widely used in mine power transmission. Furthermore, pure electric engineering machinery is more environmentally friendly and has lower power costs compared to machinery powered by fuel. This has led to a significant increase in electrically powered mining machinery and a corresponding increase in mine power transmission facilities. The frequent relocation of power transmission routes due to equipment movement also results in frequent lifting of branch boxes.

[0003] Currently, some high-voltage branch boxes have their telescopic lifting crossbars located at the bottom of the box, making ordinary lifting tools unsuitable. Using only ropes for binding can easily damage the branch box, and the rope fixation is unstable, posing a risk of the branch box falling and creating a safety hazard.

[0004] Currently, a search reveals that Chinese utility model patent CN204847756U discloses a special lifting tool for box-type transformers, including: a hook, rope loop, support rod, box-type transformer, pin, rope, and bolts. While this patent can lift the box-type structure, it still has the following technical drawbacks:

[0005] On the one hand, lifting is done by passing ropes through rope loops, which poses a risk of the rope loops breaking.

[0006] On the other hand, the connection to the bottom of the box structure is unstable and there is a risk of it falling off, as it is only connected by ropes to the pins.

[0007] In view of the shortcomings and deficiencies of the above-mentioned hoisting tools, which are unstable and rely solely on ropes for hoisting, the key to solving the above technical problems lies in developing a more practical and efficient special tool for hoisting outdoor high-voltage branch boxes. Summary of the Invention

[0008] In view of the many defects and deficiencies existing in the above-mentioned background technology, this utility model has made improvements and innovations, with the aim of providing a special tool for lifting outdoor high-voltage branch boxes. The tool consists of a frame structure composed of a main body, a load-bearing rod, and a connecting frame, which effectively ensures the stability of the branch box during the lifting process.

[0009] Another objective of this invention is to limit the branch box laterally by setting a limiting component, thereby providing a better fixing effect for the branch box and preventing lateral displacement and falling of the branch box during the lifting process.

[0010] Another objective of this invention is to provide a load-bearing rod so that the lifting crossbar at the bottom of the branch box can be attached to the load-bearing rod, thus providing support during the lifting process.

[0011] To solve the above problems and achieve the objectives of the invention, this utility model provides a special tool for lifting outdoor high-voltage branch boxes by adopting the following design structure and the following technical solution:

[0012] A special tool for lifting outdoor high-voltage branch boxes includes a lifting device that is fitted onto the high-voltage branch box during the lifting process, the lifting device comprising:

[0013] The main body is a symmetrically arranged L-shaped frame structure, consisting of horizontal and vertical sections. A hanging plate is fixedly connected to the middle of the horizontal section, and the vertical section is connected to the first horizontal plate.

[0014] The lifting platform is set between the L-shaped frames, with a perforated lifting ring in the middle for connecting the lifting device to the lifting equipment;

[0015] The first horizontal plate is located at the end of the longitudinal section;

[0016] The load-bearing rods are symmetrically arranged, with their two ends connected to the connecting frame and the first horizontal plate, respectively.

[0017] The connecting frame is a rectangular structure composed of symmetrical horizontal and vertical bars. Its first horizontal bar is hinged to the end of the main horizontal section, and the second horizontal bar is detachably connected to the load-bearing bar.

[0018] The main body, load-bearing rods, and connecting frame form a cuboid frame structure. The connecting frame is connected to the main body with the first horizontal bar as the axis, allowing the connecting frame to rotate around the axis.

[0019] Preferably, the first horizontal plate has symmetrical first waist holes at both ends, allowing the load-bearing rod to move laterally within the first waist holes and to be fixed by the first fixing bolt.

[0020] Preferably, one end of the load-bearing rod is a threaded post, and the other end is provided with a connecting nut, the opening direction of the connecting nut being perpendicular to the axis of the load-bearing rod;

[0021] One end of the threaded column is engaged with the first fixing bolt to fix the load-bearing rod to the first horizontal plate.

[0022] Preferably, the first crossbar on the connecting frame is hinged to the end of the transverse section by symmetrically arranged hinge bolts, and the second crossbar is connected to the load-bearing bar by a locking member;

[0023] Among them, the symmetrically arranged locking parts pass through the connecting nuts at one end of the load-bearing rod and are connected to the second crossbar.

[0024] Preferably, the lifting device further includes:

[0025] The limiting component is an L-shaped structure, symmetrically arranged on the side wall of the transverse section and perpendicular to the transverse section, used to limit the branch box laterally;

[0026] The third reinforcing component is a right-angled triangle structure, symmetrically arranged on both sides of the limiting component. Its right-angled side is fixedly connected to the transverse section and the limiting component to enhance the fixing effect.

[0027] Preferably, a first reinforcing member is provided at the connection between the first horizontal plate and the longitudinal section. The first reinforcing member is a right-angled triangle structure, and its right-angled side is fixedly connected to the longitudinal section and the first horizontal plate.

[0028] Preferably, the lifting device further includes:

[0029] The second horizontal plate is located in the middle of the longitudinal section, and the two ends of the second horizontal plate are symmetrically provided with second waist holes;

[0030] A tension bolt is inserted, which passes through the second waist hole and is threadedly connected to the second fixing bolt. The tension bolt is used to cooperate with the rope so that the rope is re-fixed after it wraps around the branch box.

[0031] The second reinforcing member is a right-angled triangle structure, with its right-angled sides connecting the second horizontal plate and the longitudinal section respectively, thus enhancing the fixing effect.

[0032] Preferably, a trapezoidal structure is provided at the connection between the transverse and longitudinal segments to increase the stability of the connection.

[0033] Preferably, several lifting crossbars are symmetrically arranged at the bottom of the branch box, which are connected to the load-bearing bar.

[0034] The working principle is as follows: During the use of the outdoor high-voltage branch box lifting tool with the above-mentioned design structure, after loosening and removing the locking part 152, the load-bearing rod 14 and the connecting frame 15 are separated. The first fixing bolt 132 at the connection between the load-bearing rod 14 and the first horizontal plate 13 is loosened, so that the load-bearing rod 14 is displaced in the first waist hole 131. After adjusting the distance between the two load-bearing rods 14 to the maximum, the lifting equipment is used to pass through the lifting plate 12 and the lifting tool 1 is completely placed on the branch box 2. Then the distance between the load-bearing rods 14 is shortened so that the lifting horizontal bar 21 overlaps on the load-bearing rod 14. The first fixing bolt 132 is tightened and the locking part 152 is tightened, so that the main body 11, the load-bearing rod 14 and the connecting frame 15 form a whole. The branch box 2 is laterally limited by the limiting part 17 to complete the fixing of the branch box 2, and then the lifting operation begins.

[0035] After placing the lifting device 1 on the ground, the operator can unscrew the locking piece 152. Since the first horizontal bar 153 on the connecting frame 15 is hinged to the end of the transverse section 111, the operator can flip the connecting frame 15 upward and lift it. The other operators can then move the branch box 2 into the lifting device 1 by carrying it. At this time, the limiting piece 17 is engaged with the side wall of the branch box 2. Then, the lifting horizontal bars 21 on both sides of the bottom of the branch box 2 are respectively attached to the load-bearing bars 14. If the distance between the load-bearing bars 14 is insufficient or too wide, the first fixing bolt 132 is loosened to adjust the distance between the load-bearing bars 14 so that the lifting horizontal bars 21 are all attached to the load-bearing bars 14. The locking piece 152 is then tightened to complete the fixing of the branch box 2. The lifting equipment is then used to lift and transport it to the designated location.

[0036] After securing the branch box 2, the operator uses a rope to pass through the tension bolts 3 on the second horizontal plate 16 in sequence, and then knots it around the side wall of the branch box 2. The rope is further tightened by rotating the tension bolts 3 to ensure that the branch box 2 is securely fixed.

[0037] In summary, the beneficial effects of this utility model compared with the prior art are as follows:

[0038] 1. This utility model has a first horizontal plate with a first waist hole. After adjusting the two load-bearing rods to the maximum distance, the lifting device is directly sleeved on the branch box. Then, by shortening the distance between the load-bearing rods, the lifting horizontal rod is overlapped on the load-bearing rod, which quickly and effectively fixes the branch box, ensuring the stability during lifting and improving work efficiency.

[0039] 2. Because this utility model is equipped with a connecting frame, the branch box is transported to the lifting frame structure by means of handling after the connecting frame is flipped open. By adjusting the spacing between the load-bearing bars, the lifting crossbar is overlapped on the load-bearing bar, and the branch box is lifted, which quickly connects the branch box and improves work efficiency.

[0040] 3. Because the present invention is equipped with a limiting component, it prevents the branch box from shifting laterally during the lifting process, which could lead to tilting or falling off, thus effectively preventing damage to the branch box.

[0041] 4. This utility model sets up a second horizontal plate and connects a tension bolt to the second horizontal plate. After the branch box is fixed, a rope is passed through the tension bolt and wrapped around the branch box for fixation. The rope is further tightened by rotating the tension bolt to ensure that the branch box is fixed and stable during lifting and transportation.

[0042] 5. By setting reinforcing members at the connection points of the first horizontal plate, the second horizontal plate, and the limiting member with the main body, this utility model ensures the stability of the overall structure and increases the service life of the lifting device;

[0043] 6. This utility model increases the overall strength of the main structure by setting a trapezoidal structure at the connection between the horizontal and vertical sections. Attached Figure Description

[0044] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0045] Figure 1 This is a schematic diagram of the usage state of this utility model;

[0046] Figure 2 This is one of the schematic diagrams of the overall structure of this utility model;

[0047] Figure 3 This is the second schematic diagram of the overall structure of this utility model;

[0048] Figure 4 This is a side view of the overall structure of this utility model;

[0049] Figure 5 This is a schematic diagram of the overall exploded structure of this utility model;

[0050] Figure 6 This is a schematic diagram of the connecting frame 15 of this utility model;

[0051] Figure 7 This is a schematic diagram of the movement of the load-bearing rod 14 of this utility model;

[0052] Figure 8 This is a schematic diagram of the flipped connecting frame 15 of this utility model;

[0053] Figure 9 This is one of the schematic diagrams of the usage state of Embodiment 1 of this utility model;

[0054] Figure 10 This is the second schematic diagram of the usage state of Embodiment 1 of this utility model;

[0055] Figure 11 This is one of the schematic diagrams of the usage state of Embodiment 2 of this utility model;

[0056] Figure 12 This is the second schematic diagram of the usage state of Embodiment 2 of this utility model;

[0057] In the figure, the following labels are used: 1—lifting device, 11—main body, 12—lifting plate, 13—first horizontal plate, 14—load-bearing rod, 15—connecting frame, 16—second horizontal plate, 17—limiting component, 111—transverse section, 112—longitudinal section, 131—first waist hole, 132—first fixing bolt, 141—connecting nut, 151—hinged bolt, 152—locking component, 161—second waist hole, 162—second reinforcing component, 163—second fixing bolt, 171—third reinforcing component, 1111—trapezoidal structure;

[0058] 2—Branch box, 21—Lifting crossbar;

[0059] 3—Tighten the bolts. Detailed Implementation

[0060] To make the technical means, inventive features, and achieved objectives and effects of this utility model readily understandable, the technical solution of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0061] Example 1

[0062] like Figures 1 to 10 The illustrated outdoor high-voltage branch box lifting tool includes a lifting device 1 that is fitted onto the high-voltage branch box 2 during the lifting process. The lifting device 1 includes:

[0063] Main body 11 is a symmetrically arranged L-shaped frame structure, consisting of a transverse section 111 and a longitudinal section 112. A hanging plate 12 is fixedly connected to the middle of the transverse section 111, and the longitudinal section 112 is connected to the first transverse plate 13.

[0064] The lifting plate 12 is set between the L-shaped frames and has a perforated lifting ring in the middle for connecting the lifting device 1 to the lifting equipment.

[0065] The first horizontal plate 13 is disposed at the end of the longitudinal section 112;

[0066] The load-bearing rod 14 is symmetrically arranged, and its two ends are respectively connected to the connecting frame 15 and the first horizontal plate 13;

[0067] The connecting frame 15 is a rectangular structure composed of symmetrical horizontal and vertical bars. Its first horizontal bar 153 is hinged to the end of the horizontal section 111 of the main body 11, and the second horizontal bar 154 is detachably connected to the load-bearing bar 14.

[0068] The main body 11, the load-bearing rod 14 and the connecting frame 15 form a cuboid frame structure. The connecting frame 15 is connected to the main body 11 with the first crossbar 153 as the axis, so that the connecting frame 15 can rotate around the axis.

[0069] Before using the outdoor high-voltage branch box lifting tool with the above-mentioned design structure, the operator first assembles the lifting tool 1, such as... Figure 5 As shown, the hanging plate 12 is connected to the main body 11. At this time, the hanging plate 12 is located between the symmetrically arranged transverse sections 111. The first transverse plate 13 is connected to the end of the longitudinal section 112, and the first reinforcing member is welded at the connection position, so that the right-angled side of the first reinforcing member is connected to the longitudinal section 112 and the first transverse plate 13 respectively. The limiting member 17 is connected at the symmetrical position on the side wall of the transverse section 111. At this time, the limiting member 17 is perpendicular to the transverse section 111. The third reinforcing member 171 is welded to both sides of the limiting member 17, so that the right-angled side of the third reinforcing member 171 is connected to the transverse section 111 and the limiting member 17 respectively. After the threaded end of the load-bearing rod 14 passes through the first waist hole 131, it is connected to the first transverse plate 13 by the first fixing bolt 132. Then, the hinge bolt 151 is used to pass through the end of the transverse section 111 on both sides of the main body 11 and is connected to the first transverse bar 153 set in the connecting frame 15. At this time, the connecting frame 15 rotates around the axis with the hinge bolt 151 and the first transverse bar 153 as the axis. Figure 8 As shown, the locking piece 152 is then used to connect the connecting nut 141 at one end of the load-bearing rod 14 and the second crossbar 154, thereby connecting the main body 11, the load-bearing rod 14, and the connecting frame 15 into a frame structure, as shown. Figure 2 As shown, the assembly of this utility model is now complete.

[0070] In use, the operator loosens and removes the locking piece 152, loosens the first fixing bolt 132 connected to the threaded end of the load-bearing rod 14, adjusts the distance between the two load-bearing rods 14 to the maximum distance, connects the lifting equipment and the lifting plate 12, lifts the entire lifting device 1, and after the operator adjusts its position, it is placed on the branch box 2 from top to bottom. Figure 9 As shown, at this time, the lifting crossbar 21 at the bottom of the branch box 2 is located on one side of the load-bearing bar 14, and the branch box 2 is located between the limiting members 17. The limiting members 17 are used to laterally limit the branch box 2, shorten the distance between the load-bearing bars 14, and make the lifting crossbar overlap the load-bearing bar 14. Tighten the first fixing bolt 132, use the locking member 152 to connect the load-bearing bar 14 and the connecting frame 15. Finally, after the branch box 2 is lifted to the designated position by the lifting equipment, unscrew the locking member 152, loosen the first fixing bolt 132, adjust the distance between the load-bearing bars 14 to the maximum position, and lift the entire lifting device 1 again to complete the lifting and transfer operation of the branch box 2. After the lifting device 1 is transported to the fixed location, adjust the distance between the load-bearing bars 14 and tighten the first fixing bolt 132 and the locking member 152 for the next use.

[0071] Furthermore, when the operator is transferring the branch box 2, they unscrew the locking piece 152 and loosen the first fixing bolt 132. Because the first crossbar 153 on the connecting frame 15 is hinged to the main body 11, the operator flips the connecting frame 15 to open it and lifts it up. The other operators then move the branch box 2 into the frame structure of the lifting device 1. Figure 10 As shown, lower the connecting frame 15. At this time, the limiting piece 17 contacts the side wall of the branch box 2 and limits the branch box 2 laterally. Adjust the spacing between the load-bearing rods 14 so that the lifting crossbar overlaps the load-bearing rod 14. Tighten the first fixing bolt 132 and tighten the locking piece 152. After using the lifting equipment to lift the branch box 2 to the designated position, unscrew the locking piece 152 and flip the connecting frame 15 to open it. Take out the branch box 2 by handling, lower the connecting frame 15, and tighten the locking piece 152 for the next use.

[0072] Example 2

[0073] This embodiment 2 is the same as embodiment 1, except that a second horizontal plate 16 and a tensioning bolt 3 are also provided on the longitudinal section 112. After the branch box 2 is placed into the lifting device 1, the rope is passed through the tensioning bolt 3 in sequence, and then tied after being tightened around the side wall of the branch box 2. Figure 11 As shown, the operator further tightens the rope by rotating the tension bolt 3, and uses the second fixing bolt 163 to fix the tension bolt 3 to prevent the tension bolt 3 from loosening during the lifting process and causing the rope to fail to fix. Then, after using the lifting equipment to lift the branch box 2 to the designated position, the operator loosens the second fixing bolt 163, unties the rope, unscrews the locking piece 152 and loosens the first fixing bolt 132, adjusts the spacing between the load-bearing rods 14 to the maximum position, and lifts the entire lifting device 1 again to complete the lifting and transfer operation of the branch box 2.

[0074] In this utility model, the connection is either a fixed connection or a detachable connection. The fixed connection is either a welded connection or a directly machined integral structure, while the detachable connection is either an internal or external threaded connection, a snap-fit ​​connection, or a plug-in structure connection.

[0075] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A special tool for hoisting an outdoor high-voltage branch box, comprising a lifting device (1) sleeved on the high-voltage branch box (2) during hoisting, characterized in that, The lifting device (1) includes: The main body (11) is a symmetrically arranged L-shaped frame structure, consisting of a horizontal section (111) and a vertical section (112). A hanging plate (12) is fixedly connected in the middle of the horizontal section (111), and the vertical section (112) is connected to the first horizontal plate (13). The lifting plate (12) is set between the L-shaped frames and has a perforated lifting ring in the middle for connecting the lifting device (1) to the lifting equipment. The first horizontal plate (13) is located at the end of the longitudinal section (112); The load-bearing rod (14) is symmetrically arranged, and its two ends are connected to the connecting frame (15) and the first horizontal plate (13) respectively. The connecting frame (15) is a rectangular structure composed of symmetrical horizontal and vertical bars. Its first horizontal bar (153) is hinged to the end of the horizontal section (111) of the main body (11), and the second horizontal bar (154) is detachably connected to the load-bearing bar (14). The main body (11), the load-bearing rod (14) and the connecting frame (15) form a cuboid frame structure. The connecting frame (15) is connected to the main body (11) with the first crossbar (153) as the axis, so that the connecting frame (15) can rotate around the axis.

2. The outdoor high-voltage branch box hoisting special tool according to claim 1, characterized in that, The first horizontal plate (13) has symmetrical openings at both ends of the first waist hole (131) so that the load-bearing rod (14) can move laterally in the first waist hole (131) and be fixed by the first fixing bolt (132).

3. The outdoor high-voltage branch box hoisting special tool according to claim 2, characterized in that, One end of the load-bearing rod (14) is a threaded column, and the other end is provided with a connecting nut (141). The opening direction of the connecting nut (141) is perpendicular to the axis of the load-bearing rod (14). One end of the threaded column is engaged with the first fixing bolt (132) to fix the load-bearing rod (14) onto the first horizontal plate (13).

4. The outdoor high-voltage branch box hoisting special tool according to claim 1, characterized in that, The first crossbar (153) on the connecting frame (15) is hinged to the end of the transverse section (111) by symmetrically arranged hinge bolts (151), and the second crossbar (154) is connected to the load-bearing bar (14) by locking member (152). Among them, the symmetrically arranged locking parts (152) pass through the connecting nuts (141) set at one end of the load-bearing rod (14) and are connected to the second crossbar (154).

5. The outdoor high-voltage branch box hoisting special tool according to claim 1, characterized in that, The lifting device (1) also includes: Limiting component (17) is an L-shaped structure, symmetrically arranged on the side wall of the transverse section (111) and perpendicular to the transverse section (111), used to limit the branch box (2) laterally; The third reinforcing member (171) is a right-angled triangle structure, symmetrically arranged on both sides of the limiting member (17). Its right-angled side is fixedly connected to the transverse section (111) and the limiting member (17) to enhance the fixing effect.

6. The outdoor high-voltage branch box hoisting special tool according to claim 2, characterized in that, A first reinforcing member is also provided at the connection between the first horizontal plate (13) and the longitudinal section (112). The first reinforcing member is a right-angled triangle structure, and its right-angled side is fixedly connected to the longitudinal section (112) and the first horizontal plate (13).

7. The outdoor high-voltage branch box hoisting special tool according to claim 1, characterized in that, The lifting device (1) also includes: The second horizontal plate (16) is located in the middle of the longitudinal section (112), and the two ends of the second horizontal plate (16) are symmetrically provided with second waist holes (161). The tension bolt (3) passes through the second waist hole (161) and is threadedly connected to the second fixing bolt (163). The tension bolt (3) is used to cooperate with the rope so that the rope can be fixed again after wrapping around the branch box (2). The second reinforcing member (162) is a right-angled triangle structure, with its right-angled sides connecting the second horizontal plate (16) and the longitudinal section (112) respectively, to enhance the fixing effect.

8. The outdoor high-voltage branch box hoisting special tool according to claim 1, characterized in that, A trapezoidal structure (1111) is provided at the connection between the transverse segment (111) and the longitudinal segment (112) to increase the stability of the connection.

9. A special lifting tool for outdoor high-voltage branch boxes according to claim 1, characterized in that, The bottom of the branch box (2) is symmetrically provided with several hoisting crossbars (21), which are connected to the load-bearing bar (14).

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