A unitarily installable pole top switch having a telescoping ladder structure

Abstract

The application discloses a pole-mounted switch with a telescopic ladder structure and integrally-mountable structure, and relates to the technical field of pole-mounted switches. The pole-mounted switch is designed to solve the technical problems of complicated assembly, long installation time and inability to maintain on the electric pole in the prior art. The pole-mounted switch comprises a switch assembly and a fixed ladder vertical support rod. The switch assembly comprises a shell main part, a left side plate fixedly connected to the left end of the shell main part, a right side plate fixedly connected to the right end of the shell main part, a bottom plate installed at the lower end of the shell main part, the left side plate and the right side plate, an upper cross arm inserted into the left end of the shell main part, positioning plates sleeved to the front and rear ends of the upper cross arm, and a lower cross arm clamped and connected to the lower end of the positioning plates. The pole-mounted switch can be assembled on the ground first, and is integrally mounted without the guidance of professional personnel, and is simple to install. The pole-mounted switch is hoisted through a hand crank and a first steel wire rope, and is connected to the electric pole through an upper U-shaped hoop and a lower U-shaped hoop. The pole-mounted switch is convenient to install, disassemble and maintain.

Description

Technical Field

[0001] This invention belongs to the field of pole-mounted switch technology, specifically relating to a pole-mounted switch with a retractable ladder structure that can be installed in one piece. Background Technology

[0002] Pole-mounted switches are a type of safety switch used on utility poles to ensure electrical safety. Their main function is to isolate high voltage in the circuit. Currently, most medium and high voltage outdoor pole-mounted switches in the industry are installed in a split configuration, consisting of the switch body, mounting bracket, clamps, and fasteners.

[0003] The split-type installation has the following shortcomings and defects: 1. There are many installation parts, which manufacturers are prone to sending the wrong or missing parts. Moreover, the assembly process is cumbersome for on-site installers and requires professional guidance; 2. When installing pole-mounted switches, installers must first fix the mounting bracket on the utility pole and then hoist the pole-mounted switch for assembly. The installation time is long, and the power outage time is generally limited, causing inconvenience to users; 3. During maintenance, because the split-type mounting bracket is added to the switch body and blocks the bottom cover, the switch usually needs to be removed for maintenance. Maintenance cannot be carried out on the utility pole. All of the above shortcomings cause inconvenience to on-site installation and maintenance, and may even cause huge losses to the company.

[0004] Therefore, the aforementioned problems of inconvenience in disassembly, assembly, and maintenance urgently need to be addressed in order to improve the usage scenarios of pole-mounted switches. Summary of the Invention

[0005] (1) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, the present invention aims to provide a pole-mounted switch with a retractable ladder structure that can be installed in one piece. This pole-mounted switch is designed to solve the technical problems of cumbersome assembly, long installation time, and inability to perform maintenance on the pole under existing technologies.

[0007] (2) Technical solution

[0008] To address the aforementioned technical problems, this invention provides an integrally installed pole-mounted switch with a retractable ladder structure. The pole-mounted switch includes a switch assembly and a fixed ladder vertical support rod. The switch assembly includes a main housing component, with a left side plate fixedly connected to its left end and a right side plate fixedly connected to its right end. A base plate is installed at the lower ends of the main housing component, the left side plate, and the right side plate. An upper crossarm is inserted into the left end of the main housing component. Positioning plates are sleeved at both ends of the upper crossarm, and a lower crossarm is engaged at the lower end of each positioning plate. First telescopic adjustment rods are installed at both ends of the main housing component. A second telescopic adjustment rod connected to the first telescopic adjustment rod is installed inside the lower crossarm. A switch body is installed at the upper end of the main housing component. Equally spaced fixed ladder reinforcing crossbars are fixedly connected between the fixed ladder vertical support rod and another fixed ladder vertical support rod. A groove is provided at the front end of the fixed ladder vertical support rod, and a lifting control component is installed in the groove. A vertically movable lifting ladder vertical support rod is installed at the left end of the lifting control component. Equally spaced lifting ladder reinforcing crossbars are fixedly connected between the lifting ladder vertical support rod and another lifting ladder vertical support rod. A hand crank is installed at the front end of the lifting ladder vertical support rod, and a first steel wire rope is installed at the lower end of the hand crank. A first lifting pulley, a second motor, and a fixing ring are installed sequentially from top to bottom on the outside of the fixed ladder vertical support rod. Guide rings are installed on the lower sides of both the front and rear ends of the lifting ladder vertical support rod. Second lifting pulleys are installed on the upper sides of both the front and rear ends of the lifting ladder vertical support rod. A winding reel is installed at the front end of the second motor, and a second steel wire rope is wound around the outside of the winding reel. An upper U-shaped clamp is movably connected to the left end of the upper crossarm, and a lower U-shaped clamp is movably connected to the left end of the lower crossarm.

[0009] When using the pole-mounted switch of this technical solution, the left and right side plates are fixed to both ends of the main housing component. Then, a base plate is installed at the lower end of the main housing component. The upper crossarm is inserted into the left end of the main housing component. A positioning plate is fitted over the outside of the upper crossarm, and the lower crossarm is connected to the lower end of the positioning plate. The main housing component is connected to the first telescopic adjusting rod, and the lower crossarm is connected to the second telescopic adjusting rod. Finally, the first and second telescopic adjusting rods are connected. The switch body is installed at the upper end of the main housing component, completing the assembly of the switch assembly. The fixed ladder vertical support rod is fixed to the pole, providing power to the lifting control assembly and the second... When the machine is powered on, the lifting control component in the groove is activated as needed, which raises the vertical support rod of the lifting ladder. At the same time, the second motor rotates, and the second wire rope on the outside of the winding reel slides within the first lifting pulley, the second lifting pulley, and the fixing ring. Meanwhile, the guide ring ensures the stability of the lower end of the second wire rope. The switch assembly is secured by the first wire rope. The machine climbs to the top by using the fixed ladder reinforcement crossbar and the lifting ladder reinforcement crossbar. The hand crank is rotated, the first wire rope is wound up, and the switch assembly is lifted. Then, the switch assembly is fixed to the pole by the upper and lower U-shaped clamps.

[0010] Furthermore, the main housing component and the first telescopic adjustment rod are connected by a first bolt, and the outer sides of both the upper and lower crossarms are threaded with second bolts for fixing the positioning plate.

[0011] Furthermore, a third bolt is provided between the lower crossarm and the second telescopic adjusting rod, and a fourth bolt is installed between the main housing component and the upper crossarm.

[0012] Furthermore, the lifting control assembly includes a ball screw, a first motor fixed at the bottom upper end of the groove, and a screw pair installed between the first motor and the ball screw.

[0013] Furthermore, a sealing ring is provided at the upper end of the base plate, and the first telescopic adjusting rod and the second telescopic adjusting rod are designed to be inclined.

[0014] Furthermore, one end of the second wire rope is connected to a fixed ring, and the other end of the fixed ring passes through a guide ring, a second lifting pulley, and a first lifting pulley in sequence and is connected to a winding reel.

[0015] Furthermore, the right end of the upper U-shaped clamp passes through the upper crossarm and is threaded to an upper fastening nut, and the right end of the lower U-shaped clamp passes through the lower crossarm and is threaded to a lower fastening nut.

[0016] Furthermore, a guide groove is provided at the left end of the vertical support rod of the lifting ladder, and a guide slider is slidably connected in the guide groove. A through hole is provided on the guide slider, and the lower end of the first steel wire rope extends downward through the through hole.

[0017] Furthermore, a fixed bracket is fixedly connected to the right end of the reinforcing crossbar of the fixed ladder, and the spacing between the fixed brackets does not exceed 80cm.

[0018] Furthermore, the adjustable height of the vertical support rod of the lifting ladder is greater than half the height of the fixed vertical support rod of the ladder.

[0019] (3) Beneficial effects

[0020] Compared with the prior art, the advantages of the present invention are as follows: The pole-mounted switch of the present invention can be assembled on the ground in advance and installed as a whole without the need for professional personnel guidance. The installation is simple. The telescopic ladder is formed by the fixed ladder vertical support rod and the lifting ladder vertical support rod, which facilitates the operation of the installers. The pole is hoisted by a hand crank and a first steel wire rope and connected to the pole by an upper U-shaped clamp and a lower U-shaped clamp, which effectively shortens the power outage time and brings convenience to the user. At the same time, the telescopic ladder can be used to carry out maintenance on the pole without disassembly. The installation, disassembly and maintenance are all relatively convenient. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural schematic diagram of a specific embodiment of the column-mounted switch of the present invention;

[0022] Figure 2 This is a schematic diagram of the assembly of the vertical support rod of the lifting ladder and the hand crank in a specific embodiment of the pole-mounted switch of the present invention;

[0023] Figure 3 This is a schematic diagram of the assembly of the fixed ladder vertical support rod and the lifting control component in a specific embodiment of the pole-mounted switch of the present invention;

[0024] Figure 4 This is a schematic diagram of the assembly of the switch assembly in a specific embodiment of the column-mounted switch of the present invention;

[0025] Figure 5 This is a schematic diagram of the installation structure of the second steel wire rope in a specific embodiment of the pole-mounted switch of the present invention;

[0026] Figure 6 This is a specific embodiment of the pole-mounted switch of the present invention. Figure 1 Enlarged structural diagram at point A in the middle.

[0027] The markings in the attached diagram are as follows: 1. Switch assembly; 101. Main housing component; 102. Left side plate; 103. Right side plate; 104. Base plate; 105. Upper crossarm; 106. Positioning plate; 107. Lower crossarm; 108. First telescopic adjusting rod; 109. Second telescopic adjusting rod; 110. Switch body; 111. First bolt; 112. Second bolt; 113. Third bolt; 114. Fourth bolt; 2. Fixed ladder vertical support rod; 3. Fixed ladder reinforcing crossbar; 4. Groove; 5. Lifting control assembly; 51. 52. Ball screw; 53. First motor; 54. Screw pair; 6. Vertical support rod of lifting ladder; 7. Reinforcing crossbar of lifting ladder; 8. Hand crank; 9. First wire rope; 10. First lifting pulley; 11. Second motor; 12. Fixed ring; 13. Guide ring; 14. Second lifting pulley; 15. Winding reel; 16. Second wire rope; 17. Upper U-shaped clamp; 18. Lower U-shaped clamp; 19. Upper fastening nut; 20. Lower fastening nut; 21. Guide groove; 22. Guide slider; 23. Through hole; 24. Fixed bracket. Detailed Implementation

[0028] This specific embodiment is a pole-mounted switch with a retractable ladder structure that can be installed in one piece. Its three-dimensional structural diagram is shown below. Figure 1 As shown, the assembly diagram of the vertical support rod 6 and hand crank 8 of the lifting ladder is as follows. Figure 2As shown, the column-mounted switch includes a switch assembly 1 and a fixed ladder vertical support rod 2. The switch assembly 1 includes a main housing component 101, a left side plate 102 fixedly connected to the left end of the main housing component 101, a right side plate 103 fixedly connected to the right end of the main housing component 101, a base plate 104 installed at the lower end of the main housing component 101, the left side plate 102, and the right side plate 103, an upper crossbeam 105 inserted into the left end of the main housing component 101, and positioning plates 106 sleeved at both ends of the upper crossbeam 105. The lower end of the positioning plate 106 is engaged with a lower crossbeam 107. First telescopic adjustment rods 108 are installed at both the front and rear ends of the main housing component 101. A second telescopic adjustment rod 109 connected to the first telescopic adjustment rod 108 is installed inside the lower crossbeam 107. A switch body 110 is installed at the upper end of the main housing component 101. Equally spaced fixed ladder reinforcing crossbeams 3 are fixedly connected between the fixed ladder vertical support rod 2 and another fixed ladder vertical support rod 2. A groove 4 is provided at the front end of the support rod 2. A lifting control component 5 is installed in the groove 4. A vertically movable lifting ladder vertical support rod 6 is installed at the left end of the lifting control component 5. Equally spaced lifting ladder reinforcing crossbars 7 are fixedly connected between the lifting ladder vertical support rod 6 and another lifting ladder vertical support rod 6. A hand crank 8 is installed at the front end of the lifting ladder vertical support rod 6. A first steel wire rope 9 is installed at the lower end of the hand crank 8. The outer side of the fixed ladder vertical support rod 2 is arranged from top to bottom as follows: The lifting ladder is equipped with a first lifting pulley 10, a second motor 11, and a fixing ring 12. Guide rings 13 are installed on the lower sides of both ends of the vertical support rod 6 of the lifting ladder. Second lifting pulleys 14 are installed on the upper sides of both ends of the vertical support rod 6 of the lifting ladder. A winding reel 15 is installed at the front end of the second motor 11. A second steel wire rope 16 is wound around the outside of the winding reel 15. An upper U-shaped clamp 17 is movably connected to the left end of the upper crossarm 105, and a lower U-shaped clamp 18 is movably connected to the left end of the lower crossarm 107.

[0029] The housing main component 101 and the first telescopic adjustment rod 108 are connected by a first bolt 111. The upper crossbeam 105 and the lower crossbeam 107 are both threaded with second bolts 112 for fixing the positioning plate 106. A third bolt 113 is provided between the lower crossbeam 107 and the second telescopic adjustment rod 109. A fourth bolt 114 is installed between the housing main component 101 and the upper crossbeam 105.

[0030] Meanwhile, the lifting control component 5 includes a ball screw 51, a first motor 52 fixed at the bottom upper end of the groove 4, a screw pair 53 installed between the first motor 52 and the ball screw 51, a sealing ring is provided at the upper end of the base plate 104, and the first telescopic adjustment rod 108 and the second telescopic adjustment rod 109 are designed to be inclined.

[0031] In addition, one end of the second wire rope 16 is connected to the fixed ring 12, and the other end of the fixed ring 12 passes through the guide ring 13, the second lifting pulley 14 and the first lifting pulley 10 in sequence and is connected to the winding reel 15. The right end of the upper U-shaped clamp 17 passes through the upper crossarm 105 and is threaded to the upper fastening nut 19. The right end of the lower U-shaped clamp 18 passes through the lower crossarm 107 and is threaded to the lower fastening nut 20. The left end of the vertical support rod 6 of the lifting ladder is provided with a guide groove 21. A guide slider 22 is slidably connected in the guide groove 21. A through hole 23 is provided on the guide slider 22. The lower end of the first wire rope 9 passes through the through hole 23 and extends downward.

[0032] In addition, a fixed bracket 24 is fixedly connected to the right end of the fixed ladder reinforcement crossbar 3. The spacing of the fixed brackets 24 does not exceed 80cm. The adjustable height of the lifting ladder vertical support rod 6 is greater than half the height of the fixed ladder vertical support rod 2.

[0033] The assembly diagram of the fixed ladder vertical support rod 2 and lifting control component 5 in the column switch is as follows: Figure 3 As shown, the assembly diagram of its switch component 1 is as follows: Figure 4 As shown, the installation structure diagram of its second wire rope 16 is as follows. Figure 5 As shown, its Figure 1 The enlarged structural diagram at point A is shown below. Figure 6 As shown.

[0034] When using the pole-mounted switch of this technical solution, the left side plate 102 and the right side plate 103 are respectively fixed to both ends of the main housing component 101. Then, the base plate 104 is installed at the lower end of the main housing component 101, the upper crossarm 105 is inserted into the left end of the main housing component 101, the positioning plate 106 is sleeved on the outside of the upper crossarm 105, and the lower crossarm 107 is connected to the lower end of the positioning plate 106. The main housing component 101 is connected to the first telescopic adjusting rod 108, and the lower crossarm 107 is connected to the second telescopic adjusting rod 109. Finally, the first telescopic adjusting rod 108 and the second telescopic adjusting rod 109 are connected. The switch body 110 is installed at the upper end of the main housing component 101, completing the assembly of the switch assembly 1. The fixed ladder vertical support rod 2 is fixed to the pole through the fixed bracket 24. The lifting control assembly 5 and the second motor 11 are powered on. According to the needs of use, the lifting control assembly 5 in the groove 4 is activated, and the first motor 52 drives... The ball screw 51 rotates, and the screw pair 53 on the outside of the ball screw 51 converts the rotational motion of the ball screw 51 into linear motion. The screw pair 53 drives the vertical support rod 6 of the lifting ladder to rise. The first motor 52 reverses and drives the vertical support rod 6 of the lifting ladder to fall. At the same time, the second motor 11 rotates, and the second steel wire rope 16 on the outside of the winding reel 15 slides in the first lifting pulley 10, the second lifting pulley 14 and the fixing ring 12. Meanwhile, the guide ring 13 ensures the stability of the lower end of the second steel wire rope 16. The switch assembly 1 is tied by the first steel wire rope 9. The switch assembly 1 is climbed to the top by the fixed ladder reinforcement bar 3 and the lifting ladder reinforcement bar 7. The hand crank 8 is rotated, the first steel wire rope 9 is wound up and the switch assembly 1 is lifted. As the switch assembly 1 rises, the guide slider 22 slides in the guide groove 21. Then, the switch assembly 1 is fixed to the pole by the upper U-shaped clamp 17 and the lower U-shaped clamp 18.

Claims

1. A column-mounted switch with a retractable ladder structure that can be installed in one piece, the column-mounted switch comprising a switch assembly (1) and a fixed ladder vertical support rod (2); characterized in that, The switch assembly (1) includes a housing main component (101), a left side plate (102) fixedly connected to the left end of the housing main component (101), a right side plate (103) fixedly connected to the right end of the housing main component (101), a base plate (104) installed at the lower end of the housing main component (101), the left side plate (102) and the right side plate (103), an upper crossarm (105) inserted into the left end of the housing main component (101), positioning plates (106) sleeved at both ends of the upper crossarm (105), and a lower crossarm engaged at the lower end of the positioning plates (106). (107) A first telescopic adjusting rod (108) is installed at both the front and rear ends of the main housing component (101). A second telescopic adjusting rod (109) connected to the first telescopic adjusting rod (108) is installed on the inner side of the lower crossbeam (107). A switch body (110) is installed at the upper end of the main housing component (101). Fixed ladder reinforcing crossbars (3) are fixedly connected between the fixed ladder vertical support rod (2) and another fixed ladder vertical support rod (2). A groove (4) is opened at the front end of the fixed ladder vertical support rod (2). A lifting control assembly (5) is installed in the groove (4). A vertical support rod (6) for the lifting ladder that can move vertically is installed at the left end of the lifting control assembly (5). Equally spaced lifting ladder reinforcing crossbars (7) are fixedly connected between the vertical support rod (6) and another vertical support rod (6). A hand crank (8) is installed at the front end of the vertical support rod (6). A first steel wire rope (9) is installed at the lower end of the hand crank (8). A first lifting pulley is installed sequentially from top to bottom on the outside of the fixed ladder vertical support rod (2). 10) The second motor (11) and the fixing ring (12) are provided. Guide rings (13) are installed on the lower sides of both ends of the vertical support rod (6) of the lifting ladder. Second lifting pulleys (14) are installed on the upper sides of both ends of the vertical support rod (6) of the lifting ladder. A winding disc (15) is installed at the front end of the second motor (11). A second steel wire rope (16) is wound around the outside of the winding disc (15). An upper U-shaped clamp (17) is movably connected to the left end of the upper crossarm (105). A lower U-shaped clamp (18) is movably connected to the left end of the lower crossarm (107).

2. A pole-mounted switch with a retractable ladder structure that can be installed in one piece according to claim 1, characterized in that, The main housing component (101) and the first telescopic adjustment rod (108) are connected by a first bolt (111), and the outer sides of the upper crossbeam (105) and the lower crossbeam (107) are threaded with second bolts (112) for fixing the positioning plate (106).

3. A pole-mounted switch with a retractable ladder structure that can be installed integrally according to claim 1, characterized in that, A third bolt (113) is provided between the lower crossarm (107) and the second telescopic adjusting rod (109), and a fourth bolt (114) is installed between the main housing component (101) and the upper crossarm (105).

4. A pole-mounted switch with a retractable ladder structure that can be installed in one piece according to claim 1, characterized in that, The lifting control assembly (5) includes a ball screw (51), a first motor (52) fixed at the bottom upper end of the groove (4), and a screw pair (53) installed between the first motor (52) and the ball screw (51).

5. A pole-mounted switch with a retractable ladder structure that can be installed in one piece according to claim 1, characterized in that, A sealing ring is provided at the upper end of the base plate (104), and the first telescopic adjustment rod (108) and the second telescopic adjustment rod (109) are designed to be inclined.

6. A pole-mounted switch with a retractable ladder structure that can be installed in one piece according to claim 1, characterized in that, One end of the second wire rope (16) is connected to the fixed ring (12), and the other end of the fixed ring (12) passes through the guide ring (13), the second lifting pulley (14) and the first lifting pulley (10) in sequence and is connected to the winding reel (15).

7. A pole-mounted switch with a retractable ladder structure that can be installed in one piece according to claim 1, characterized in that, The upper U-shaped clamp (17) is threaded through the upper crossbeam (105) and connected to the upper fastening nut (19). The lower U-shaped clamp (18) is threaded through the lower crossbeam (107) and connected to the lower fastening nut (20).

8. A pole-mounted switch with a retractable ladder structure that can be installed in one piece according to claim 1, characterized in that, The vertical support rod (6) of the lifting ladder has a guide groove (21) on its left end. A guide slider (22) is slidably connected in the guide groove (21). A through hole (23) is provided on the guide slider (22) and extends downward through the through hole (23). The lower end of the first steel wire rope (9) extends downward through the through hole (23).

9. A pole-mounted switch with a retractable ladder structure that can be installed integrally according to claim 1, characterized in that, The right end of the fixed ladder reinforcement crossbar (3) is fixedly connected to a fixed bracket (24), and the spacing between the fixed brackets (24) does not exceed 80cm.

10. A pole-mounted switch with a retractable ladder structure that can be installed integrally according to claim 1, characterized in that, The adjustable height of the vertical support rod (6) of the lifting ladder is greater than half the height of the fixed vertical support rod (2).

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