Lifting device for replacing pole-mounted load switch

Abstract

The invention discloses a lifting device for replacing a pole-mounted load switch, and the lifting device mainly comprises a base, a middle frame body, an inner frame body, a loading platform, a driving mechanism, a plurality of fixed pulleys, traction ropes and the like, so that the pole-mounted switch placed on the loading platform can be lifted through the lifting device, the pole-mounted load switch can be rapidly lifted, and the pole-mounted load switch can be conveniently replaced. According to the lifting device, the problems of unstable lifting, poor safety, low efficiency, high personnel and device configuration, high crane installation and control difficulty and the like of an existing lifting mode and the like are effectively solved, the lifting operation of the load switch is realized without the help of a vehicle, the convenience of operation is greatly improved by using the lifting device, and the construction efficiency is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of electric power maintenance equipment, and in particular to a lifting device for replacing a column-mounted load switch. Background Art

[0002] With the development of power grids, the requirements for power supply reliability are increasing day by day, and it is imperative to replace the previous power outage maintenance with live working. As part of the distribution network line, the pole switch is responsible for important tasks such as line segmentation, connection, and diversion, and is a common equipment in the distribution network. Due to its own characteristics, the life of silicone rubber, the increase in power load, overvoltage, external force damage and other reasons, it often needs to be replaced. Due to the characteristics of the switch, it is generally installed on the main line or the branch user line with larger capacity. Once a fault occurs or capacity expansion is required, if a power outage is used for replacement, the main line will be out of service, causing a large-scale power outage, which not only affects the reliability of power supply, but also brings burdens to local industry and life. Some users cannot or cannot even shut down the power.

[0003] The lifting of existing pole-mounted switches is generally completed by vehicle hoisting or some lifting devices, which usually have the following problems: shaking may occur due to uneven force or unstable foundation, especially in severe weather such as strong winds and heavy rains, the shaking is more obvious, and severe cases may even cause collapse, affecting operational safety; using vehicles to lift the load switch requires the use of specific vehicles, which increases vehicle costs, and the operation is not convenient and the construction efficiency is low. Summary of the invention

[0004] In view of the above shortcomings, the present invention provides a lifting device for replacing a column-mounted load switch, which can solve the problems of unstable lifting and poor safety of existing hoisting lifting devices.

[0005] In order to achieve the above object, the present invention adopts the following technical scheme:

[0006] A lifting device for replacing a column-mounted load switch, comprising:

[0007] A base, with base side frames vertically arranged on both sides, a base side frame top crossbeam arranged on the top of the base side frame, and a fixed pulley arranged on the base side frame top crossbeam;

[0008] The middle frame is two in number and is arranged one by one on the inner sides of the base side frames located on both sides and can slide up and down along the inner sides of the base side frames. The top of the middle frame is provided with a middle frame top crossbeam, and the lower part of the middle frame is provided with a middle frame bottom crossbeam, and the middle frame top crossbeam and the middle frame bottom crossbeam are respectively provided with fixed pulleys;

[0009] The inner frame is two in number and is arranged one by one on the inner side of the middle frame located on both sides and can slide up and down along the inner side of the middle frame. The top of the inner frame is provided with an inner frame top crossbeam, the bottom of the inner frame is provided with an inner frame bottom crossbeam, and a fixed pulley is provided on the inner frame top crossbeam;

[0010] A driving mechanism, which is fixedly mounted on the base and is used to drive the middle frame bodies located on both sides to slide up and down;

[0011] A loading platform, which is located directly above the base;

[0012] The first ropes are in two groups and are respectively arranged on both sides, one end of the first rope is fixedly connected to the top cross beam of the base side frame, and the other end of the first rope is fixedly connected to the bottom cross beam of the inner frame on the same side after passing through the fixed pulley of the top cross beam of the middle frame on the same side;

[0013] The second ropes are divided into two groups and are respectively arranged on both sides. One end of the second rope is fixedly connected to the top cross beam of the middle frame, and the other end is fixedly connected to the load platform after passing around the fixed pulley of the top cross beam of the inner frame.

[0014] Further, the driving mechanism includes a driving motor, a third rope and a rotating shaft, the driving motor is fixedly mounted on the rear side of the base, the rotating shaft is connected to the output shaft of the driving motor and is driven to rotate by the driving motor;

[0015] Two fixed pulleys are arranged on the front side of the base;

[0016] A bottom crossbeam of the base side frame is provided at the bottom of the base side frame, and a fixed pulley is provided on the bottom crossbeam of the base side frame;

[0017] The third ropes are divided into two groups, one end of each group of the third ropes is wound around the rotating shaft, and respectively passes around a fixed pulley on the front side of the base, and after passing around the fixed pulley of the bottom beam of the base side frame, the fixed pulley of the top beam of the base side frame and the fixed pulley of the bottom beam of the middle frame in sequence, the other end is fixedly connected to the top beam of the base side frame.

[0018] Furthermore, the top cross beam of the base side frame and the bottom cross beam of the middle frame are provided with multiple fixed pulleys of the same number, which are arranged at the middle position of the top cross beam of the base side frame or the bottom cross beam of the middle frame. After the third rope passes around the fixed pulley on the bottom cross beam of the base side frame, it first passes around a fixed pulley of the top cross beam of the base side frame and then passes around a fixed pulley of the bottom cross beam of the middle frame. After passing around the fixed pulleys of the top cross beam of the base side frame and the bottom cross beam of the middle frame, it is fixedly connected to the top cross beam of the base side frame.

[0019] Furthermore, each group of the first ropes has two, and each of the top cross beams of the middle frame has two corresponding fixed pulleys, which are respectively located at the two end positions of the top cross beam of each middle frame, and one end of the two first ropes in each group is respectively fixedly connected to the two end positions of the top cross beam of the base side frame, and the other end is fixedly connected to the two end positions of the bottom cross beam of the inner frame on the same side.

[0020] Furthermore, each group of the second ropes has two, and each of the top cross beams of the inner frame has two corresponding fixed pulleys, which are respectively located at the two ends of the top cross beam of each inner frame. One end of the two second ropes in each group is respectively fixedly connected to the two ends of the top cross beam of the middle frame, and the other end is fixedly connected to a corner of the edge of the loading platform.

[0021] Furthermore, a limited pulley group is fixedly arranged at the top position of the two side frames of the base side frame, and the limited roller group includes two rollers arranged side by side, and the two rollers arranged side by side abut against the two side frames of the middle frame from both sides;

[0022] A limiting pulley group is fixedly arranged at the bottom position of the two side frames of the middle frame body, and the limiting roller group includes two rollers arranged side by side, and the two rollers arranged side by side abut against the two side frames of the base side frame from both sides.

[0023] Furthermore, a limited pulley group is fixedly arranged at the bottom position of the two side frames of the inner frame, and the limited roller group includes two rollers arranged side by side, and the two rollers arranged side by side abut against the two side frames of the middle frame from both sides;

[0024] A limiting pulley group is fixedly arranged at the top position of the two side frames of the middle frame, and the limiting roller group includes two rollers arranged side by side, and the two rollers arranged side by side abut against the two side frames of the inner frame from both sides.

[0025] Furthermore, a limiting pulley group is fixedly arranged at the four corners of the loading platform, and the limiting roller group includes two rollers arranged side by side, and the two rollers arranged side by side abut against the two side frames of the inner frame from both sides.

[0026] Furthermore, a diagonal brace is provided between the upper parts of the two side frames of the two base side frames at the rear side positions;

[0027] The two base side frames are respectively provided with mutually connected cross beams at the tops of the front and rear sides.

[0028] Furthermore, the load platform is made of insulating material.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The lifting device for replacing the load switch on the pole of the present invention can realize the rapid lifting of the load switch on the pole, and effectively solve the problems of unstable lifting, poor safety, low efficiency, high personnel and equipment configuration, and difficult crane installation and control in the existing hoisting methods;

[0031] The lifting device of the present invention can lift the load switch without the aid of a vehicle. The use of the lifting device greatly improves the convenience of operation and construction efficiency.

[0032] The load platform is insulated, and the load switch replacement operation can be completed under power-on conditions, avoiding the impact of power outages on users' electricity consumption. Especially during peak power consumption periods, the live operation mode ensures the continuity of power supply and greatly improves the reliability of power supply.

[0033] Compared with lifting load switches with the help of vehicles, the use of dedicated lifting devices can reduce vehicle usage costs and construction costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for describing the embodiments are briefly introduced below.

[0035] Figure 1 It is a structural schematic diagram of a lifting device for replacing a column-mounted load switch according to the present invention from one viewing angle;

[0036] Figure 2 It is a structural schematic diagram of the lifting device for replacing a column-mounted load switch of the present invention from another perspective;

[0037] Figure 3 It is a structural schematic diagram of the base and its upper parts from one viewing angle of the present invention;

[0038] Figure 4 It is a schematic structural diagram of the base and its upper parts from another perspective of the present invention;

[0039] Figure 5 It is a structural schematic diagram of the middle frame and its upper component of the present invention;

[0040] Figure 6 It is a structural schematic diagram of the inner frame and the upper component of the present invention;

[0041] Figure 7 It is a structural schematic diagram of the load platform and its upper component of the present invention;

[0042] Figure 8 It is a schematic structural diagram of the limiting roller group of the present invention.

[0043] Among them, the markings shown in the figure are: 10-base; 11-base side frame; 111-top crossbeam of base side frame; 112-bottom crossbeam of base side frame; 12-diagonal brace; 13-crossbeam; 20-middle frame; 21-top crossbeam of middle frame; 22-bottom crossbeam of middle frame; 30-inner frame; 31-top crossbeam of inner frame; 32-bottom crossbeam of inner frame; 40-fixed pulley; 50-loading platform; 61-first rope; 62-second rope; 63-third rope; 70-driving motor; 71-rotating shaft; 72-partition; 80-limiting roller group; 81-roller; 90-universal wheel. DETAILED DESCRIPTION

[0044] The technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all of the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] In the description of the present invention, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0046] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0047] Please refer to Figures 1 to 8 A preferred embodiment of the present invention provides a lifting device for replacing a pole-mounted load switch, the lifting device mainly includes a base 10, a middle frame 20, an inner frame 30, a load platform 50, a driving mechanism, some fixed pulleys 40 and a pulling rope, etc., so that the pole-mounted switch placed on the load platform 50 can be lifted by the lifting device.

[0048] The base 10 as a whole is preferably a square frame structure, which is arranged horizontally. Universal wheels 90 are respectively arranged at the four bottom parts of the base 10 to facilitate the overall movement of the lifting device. The universal wheels 90 are of self-locking type, so that when the lifting device moves to a certain position, the universal wheels 90 are self-locking and cannot continue to move.

[0049] The base 10 is provided with base side frames 11 vertically upward on both sides. The base side frames 11 are preferably square frame structures as a whole, and are vertically arranged and arranged on both sides of the base 10. The top of the base side frame 11 is provided with a base side frame top crossbeam 111, and the bottom of the base side frame 11 is provided with a base side frame bottom crossbeam 112, and the base side frame top crossbeam 111 preferably protrudes outwards compared with the base side frame bottom crossbeam 112 and the two side frames of the base side frame 11. Fixed pulleys 40 are respectively provided on the base side frame top crossbeam 111 and the base side frame bottom crossbeam 112.

[0050] In order to keep the base 10 and the base side frames 11 on both sides stable and firm, an X-shaped diagonal brace 12 is arranged between the upper parts of the two side frames at the rear side of the base side frames 11 on both sides, and mutually connected cross beams 13 are respectively arranged on the tops of the front and rear sides of the base side frames 11 on both sides, and the arrangement of the diagonal brace 12 and the cross beam 13 can also form a guardrail to play a protective role.

[0051] There are two middle frames 20, and the middle frames 20 are preferably square frame structures as a whole, and are arranged vertically, and are arranged one by one on the inner sides of the base side frames 11 located on both sides and can slide up and down along the inner sides of the base side frames 11. For example, vertical slide rails are arranged on the inner sides of the two side frames of the base side frames 11 on both sides, and the middle frame 20 slides up and down through the slide rails. The top of the middle frame 20 is provided with a middle frame top beam 21, and the lower part of the middle frame 20 is provided with a middle frame bottom beam 22, and fixed pulleys 40 are respectively arranged on the middle frame top beam 21 and the middle frame bottom beam 22.

[0052] In this exemplary embodiment, a limited pulley group 80 is fixedly provided at the top position of the two side frames of the base side frame 11, and the limited roller group 80 includes two rollers 81 arranged side by side, and the two rollers 81 arranged side by side abut the two side frames of the middle frame 20 from both sides, so as to limit the middle frame 20 through the two rollers 81 arranged side by side, and limit the middle frame 20 from both sides while ensuring that the middle frame 20 slides smoothly up and down, so as to prevent the middle frame 20 from detaching from the base side frame 11 from the left and right sides. In some preferred embodiments, rollers may also be provided on the front and rear sides of the two side frames of the middle frame 20, and the rollers are located in the slide rails on the inner sides of the two side frames of the base side frame 11, so as to abut the two side frames of the base side frame 11 from the front and rear sides to achieve smooth up and down sliding of the middle frame 20. A limiting pulley block 80 is fixedly arranged at the bottom position of the two side frames of the middle frame 20, and the limiting roller block 80 includes two rollers 81 arranged side by side, and the two rollers 81 arranged side by side abut the two side frames of the base side frame 11 from both sides, so as to limit the middle frame 20 through the two rollers 81 arranged side by side, and limit the middle frame 20 from both sides while ensuring that the middle frame 20 slides up and down smoothly, so as to prevent the middle frame 20 from being separated from the base side frame 11 from the left and right sides. In conjunction with the limiting pulley block 80 located at the top position of the two side frames of the base side frame 11, stability can be ensured by limiting at multiple locations.

[0053] There are two inner frames 30, and the inner frames 30 are preferably square frame structures as a whole, and are arranged vertically, and are arranged one by one on the inner sides of the middle frames 20 located on both sides and can slide up and down along the inner sides of the middle frames 20. For example, vertical slide rails are arranged on the inner sides of the frames on both sides of the middle frame 20, and the inner frames 30 slide up and down through the slide rails. The top of the inner frame 30 is provided with an inner frame top crossbeam 31, the bottom of the inner frame 30 is provided with an inner frame bottom crossbeam 32, and a fixed pulley 40 is arranged on the inner frame top crossbeam 31.

[0054] A limited pulley group 80 is fixedly arranged at the bottom position of the two side frames of the inner frame 30, and the limited roller group 80 includes two rollers 81 arranged side by side, and the two rollers 81 arranged side by side abut the two side frames of the middle frame 20 from both sides, so as to limit the inner frame 30 through the two rollers 81 arranged side by side, and limit the inner frame 30 from both sides when the inner frame 30 slides up and down smoothly, so as to prevent the inner frame 30 from being separated from the middle frame 20 from the left and right sides. In some preferred embodiments, rollers can also be arranged on the front and rear sides of the two side frames of the inner frame 30, and the rollers are located in the slide rails on the inner sides of the two side frames of the middle frame 20, so as to abut the two side frames of the middle frame 20 from the front and rear sides to achieve smooth sliding of the inner frame 30 up and down. A limiting pulley group 80 is fixedly arranged at the top position of the two side frames of the middle frame 20, and the limiting roller group 80 includes two rollers 81 arranged side by side, and the two rollers 81 arranged side by side abut the two side frames of the inner frame 30 from both sides, so as to limit the inner frame 30 through the two rollers 81 arranged side by side, and limit the inner frame 30 from both sides while ensuring that the inner frame 30 slides up and down smoothly, so as to prevent the inner frame 30 from being separated from the middle frame 20 from the left and right sides. In conjunction with the limiting pulley group 80 located at the bottom position of the two side frames of the middle frame 20, stability can be ensured by limiting at multiple locations.

[0055] The driving mechanism is fixedly mounted on the base 10, and is used to drive the middle frame 20 located on both sides to slide up and down. For example, in some embodiments, the driving mechanism is a telescopic structure such as an electric push rod, and the two ends are respectively connected to the bottom cross beam 112 of the base side frame and the bottom cross beam 22 of the middle frame, and the middle frame 20 is driven to slide up and down by the telescopic structure of the driving mechanism such as the electric push rod.

[0056] The loading platform 50 is located directly above the base 10. The loading platform 50 is made of insulating material, preferably high-strength insulating material, and can safely complete the replacement of the load switch under live conditions, effectively ensuring construction safety, while achieving non-stop operation and improving power supply reliability. In this exemplary embodiment, the loading platform 50 is a square flat plate structure as a whole, arranged horizontally, and is used to load the load switch. Of course, the operator can also be located on the loading platform 50.

[0057] There are two groups of first ropes 61, which are respectively arranged on both sides. One end of the first rope 61 is fixedly connected to the top cross beam 111 of the base side frame, and after passing the fixed pulley 40 of the top cross beam 21 of the middle frame on the same side, the other end is fixedly connected to the bottom cross beam 32 of the inner frame on the same side. The first rope 61 is used to pull the inner frame 30 to slide the inner frame 30 upward. In this exemplary embodiment, each group of first ropes 61 has two, and each middle frame top cross beam 21 has two corresponding fixed pulleys 40, which are respectively located at the two ends of each middle frame top cross beam 21. One end of the two first ropes 61 of each group is respectively fixedly connected to the two ends of the top cross beam 111 of the base side frame, and the other end is fixedly connected to the two ends of the bottom cross beam 32 of the inner frame on the same side. By pulling the bottom cross beam 32 of the inner frame from the two ends, the inner frame 30 can be smoothly lifted.

[0058] There are two groups of second ropes 62, which are respectively arranged on both sides. One end of the second rope 62 is fixedly connected to the top cross beam 21 of the middle frame, and after passing the fixed pulley 40 of the top cross beam 31 of the inner frame, the other end is fixedly connected to the load platform 50. The second rope 62 is used to pull the load platform 50 to slide the load platform 50 upward. In this exemplary embodiment, each group of second ropes 62 has two, and each fixed pulley 40 of the top cross beam 31 of the inner frame corresponds to two, which are respectively located at the two ends of each top cross beam 31 of the inner frame. One end of the two second ropes 62 of each group is respectively fixedly connected to the two ends of the top cross beam 21 of the middle frame, and the other end is fixedly connected to a corner of the edge of the load platform 50. By pulling the load platform 50 from the four corners of the load platform 50, the load platform 50 can be smoothly lifted.

[0059] A limiting pulley group 80 is fixedly set at the four corners of the loading platform 50. The limiting roller group 80 includes two rollers 81 arranged side by side. The two rollers 81 arranged side by side abut against the two side frames of the inner frame 30 from both sides, so as to limit the loading platform 50 through the two rollers 81 arranged side by side, thereby ensuring that the loading platform 50 slides smoothly up and down.

[0060] In this exemplary embodiment, the driving mechanism includes a driving motor 70, a third rope 63 and a rotating shaft 71. The driving motor 70 is fixedly mounted on the rear side of the base 10. The rotating shaft 71 is connected to the output shaft of the driving motor 70 and is driven to rotate by the driving motor 70. The rotating shaft 71 is separated into two mutually independent positions by three partitions 72. Two fixed pulleys 40 are arranged on the front side of the base 10, and the two fixed pulleys 40 are located in the middle of the base 10. The third ropes 63 are divided into two groups, one in each group. One end of each group of third ropes 63 is first tied and then wound around the rotating shaft 71, and each group of third ropes 63 is wound around an independent position separated by a partition 72 on the rotating shaft 71. Each group of third ropes 63 respectively passes around a fixed pulley 40 on the front side of the base 10, and after passing around the fixed pulley 40 on the bottom cross beam 112 of the base side frame, the fixed pulley 40 on the top cross beam 111 of the base side frame, and the fixed pulley 40 on the bottom cross beam 22 of the middle frame in sequence, the other end is fixedly connected to the top cross beam 111 of the base side frame. During implementation, the driving motor 70 drives the rotating shaft 71 to rotate to reel in the two sets of third ropes 63. When the third ropes 63 are reeled in, the middle frame 20 can be pulled to slide upward with the assistance of the fixed pulley 40 on the front side of the base 10, the fixed pulley 40 on the bottom beam 112 of the base side frame, the fixed pulley 40 on the top beam 111 of the base side frame, and the fixed pulley 40 on the bottom beam 22 of the middle frame. After the driving motor 70 drives the rotating shaft 71 to rotate in the reverse direction, the middle frame 20 slides downward under the self-weight of the middle frame 20, etc.

[0061] In a preferred embodiment, there are two fixed pulleys 40 on the top cross beam 111 of the base side frame and the bottom cross beam 22 of the middle frame, respectively, which are arranged at the middle position of the top cross beam 111 of the base side frame or the bottom cross beam 22 of the middle frame. After the third rope 63 passes around the fixed pulley 40 on the bottom cross beam 112 of the base side frame, it passes around the fixed pulley 40 of the top cross beam 111 of the base side frame first and then passes around the fixed pulley 40 of the bottom cross beam 22 of the middle frame. After passing around the fixed pulleys 40 of the top cross beam 111 of the base side frame and the bottom cross beam 22 of the middle frame, it is fixedly connected to the top cross beam 111 of the base side frame. By arranging multiple fixed pulleys 40 on the top cross beam 111 of the base side frame and the bottom cross beam 22 of the middle frame, the third rope 63 can be bent multiple times, and by cooperating with the fixed pulley 40, the rising of the middle frame 20 can be made more stable.

[0062] During implementation, the driving motor 70 drives the rotating shaft 71 to rotate and loosen the third rope 63. Under the dead weight of the middle frame 20, the inner frame 30 and the loading platform 50, the middle frame 20, the inner frame 30 and the loading platform 50 move downward, and the loading platform 50 is in a relatively low position. At this time, it is convenient to place the load switch on the loading platform 50, and then the driving motor 70 is controlled to drive the rotating shaft 71 to rotate and tighten the third rope 63. At this time, in the process of the third rope 63 retracting the rotating shaft 71, the middle frame 20 gradually slides upward and rises. At the same time, because one end of the first rope 61 is fixedly connected to the top crossbeam 111 of the base side frame The other end is fixedly connected to the bottom crossbeam 32 of the inner frame on the same side, so that during the gradual rise of the middle frame 20, the inner frame 30 can be driven to gradually slide upward and rise. At the same time, because one end of the second rope 62 is fixedly connected to the top crossbeam 21 of the middle frame, and the other end is fixedly connected to the load platform 50, during the gradual rise of the inner frame 30, the load platform 50 can be driven to gradually slide upward and rise. At this time, the load switch on the load platform 50 can be lifted. For example, in this exemplary embodiment, the overall lifting height of the device is 13 meters, and the load is 300 kilograms, which can achieve a certain height and a certain weight. When the load platform 50 needs to be lowered, it is only necessary to drive the motor 70 to drive the rotating shaft 71 to rotate and loosen the third rope 63. Under the dead weight of the middle frame 20, the inner frame 30 and the load platform 50, the middle frame 20, the inner frame 30 and the load platform 50 move downward, and the load platform 50 descends. In this way, a driving mechanism can be used to control the middle frame 20 and the inner frame 30 to slide upward and extend at the same time and drive the load platform 50 to rise, so as to realize the rapid lifting of the load switch on the pole, and the lifting of the load switch on the pole is stable, which effectively solves the problems of unstable lifting, poor safety, low efficiency, high personnel and equipment configuration, and difficult crane installation control in the existing hoisting method. The present invention can also be applied to operation scenes such as equipment maintenance and replacement on the pole, shortening the installation time of the equipment on the pole, and improving the efficiency of equipment maintenance and replacement on the pole, and has good promotion and application value.

[0063] The lifting device of the present invention does not need the aid of a vehicle to realize the lifting operation of the load switch. By using the lifting device, the convenience of the operation is greatly improved, and the construction efficiency is greatly improved; the device adopts insulation treatment, and can complete the replacement operation of the load switch under power-on conditions, avoiding the impact on user electricity consumption due to power outage construction, especially during peak power consumption periods. The live operation mode ensures the continuity of power supply and greatly improves the reliability of power supply; compared with the lifting operation of the load switch with the aid of a vehicle, the use of a special lifting device can reduce the vehicle usage fee and reduce the construction cost.

[0064] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A lifting device for replacing a column load switch, characterized in that: Included are: A base (10) having base side frames (11) arranged vertically upward on both sides thereof, a base side frame top crossbeam (111) being arranged on the top of the base side frame (11), and a fixed pulley (40) being arranged on the base side frame top crossbeam (111); The middle frame (20) is two in number and is arranged one by one on the inner sides of the base side frames (11) located on both sides and can slide up and down along the inner sides of the base side frames (11); the top of the middle frame (20) is provided with a middle frame top crossbeam (21); the lower part of the middle frame (20) is provided with a middle frame bottom crossbeam (22); and fixed pulleys (40) are respectively provided on the middle frame top crossbeam (21) and the middle frame bottom crossbeam (22); There are two inner frames (30), which are arranged one by one on the inner sides of the middle frames (20) located on both sides and can slide up and down along the inner sides of the middle frames (20); the top of the inner frames (30) is provided with an inner frame top crossbeam (31); the bottom of the inner frames (30) is provided with an inner frame bottom crossbeam (32); and a fixed pulley (40) is provided on the inner frame top crossbeam (31); A driving mechanism, which is fixedly mounted on the base (10) and is used to drive the middle frame (20) located on both sides to slide up and down; A loading platform (50) located directly above the base (10); Two sets of first ropes (61) are respectively arranged on both sides, one end of the first rope (61) is fixedly connected to the top crossbeam (111) of the base side frame, and after passing around the fixed pulley (40) of the top crossbeam (21) of the middle frame on the same side, the other end is fixedly connected to the bottom crossbeam (32) of the inner frame on the same side; The second rope (62) is divided into two groups and is respectively arranged on both sides. One end of the second rope (62) is fixedly connected to the top cross beam (21) of the middle frame, and the other end is fixedly connected to the load platform (50) after passing around the fixed pulley (40) of the top cross beam (31) of the inner frame.

2. The lifting device for replacing a column-mounted load switch according to claim 1, characterized in that: The driving mechanism comprises a driving motor (70), a third rope (63) and a rotating shaft (71); the driving motor (70) is fixedly mounted on the rear side of the base (10); the rotating shaft (71) is connected to the output shaft of the driving motor (70) and is driven to rotate by the driving motor (70); Two fixed pulleys (40) are arranged on the front side of the base (10); A base side frame bottom crossbeam (112) is provided at the bottom of the base side frame (11), and a fixed pulley (40) is provided on the base side frame bottom crossbeam (112); The third ropes (63) are divided into two groups. One end of each group of the third ropes (63) is wound around the rotating shaft (71) and respectively passes around a fixed pulley (40) on the front side of the base (10). After passing around the fixed pulley (40) of the bottom cross beam (112) of the base side frame, the fixed pulley (40) of the top cross beam (111) of the base side frame and the fixed pulley (40) of the bottom cross beam (22) of the middle frame in sequence, the other end is fixedly connected to the top cross beam (111) of the base side frame.

3. The lifting device for replacing a column-mounted load switch according to claim 2, characterized in that: The fixed pulleys (40) of the top cross beam (111) of the base side frame and the bottom cross beam (22) of the middle frame are respectively multiple and the number is the same and they are arranged at the middle position of the top cross beam (111) of the base side frame or the bottom cross beam (22) of the middle frame. After the third rope (63) passes around the fixed pulley (40) on the bottom cross beam (112) of the base side frame, it passes around the fixed pulley (40) of the top cross beam (111) of the base side frame first and then passes around the fixed pulley (40) of the bottom cross beam (22) of the middle frame. After passing around the fixed pulleys (40) of the top cross beam (111) of the base side frame and the bottom cross beam (22) of the middle frame, it is fixedly connected to the top cross beam (111) of the base side frame.

4. The lifting device for replacing a column-mounted load switch according to claim 1, characterized in that: Each group of the first ropes (61) has two ropes, and each of the middle frame top cross beams (21) has two corresponding fixed pulleys (40), which are respectively located at the two ends of each middle frame top cross beam (21). One end of each group of the two first ropes (61) is respectively fixedly connected to the two ends of the top cross beam (111) of the base side frame, and the other end is fixedly connected to the two ends of the bottom cross beam (32) of the inner frame on the same side.

5. The lifting device for replacing a column-mounted load switch according to claim 1, characterized in that: Each group of the second ropes (62) has two ropes, and each of the fixed pulleys (40) of the top cross beam (31) of the inner frame has two ropes, which are respectively located at the two ends of each of the top cross beams (31) of the inner frame. One end of each group of the two second ropes (62) is respectively fixedly connected to the two ends of the top cross beam (21) of the middle frame, and the other end is fixedly connected to a corner of the edge of the load platform (50).

6. The lifting device for replacing a column-mounted load switch according to claim 1, characterized in that: A limiting pulley group (80) is fixedly arranged at the top position of the two side frames of the base side frame (11), and the limiting roller group (80) includes two rollers (81) arranged side by side, and the two rollers (81) arranged side by side abut against the two side frames of the middle frame (20) from both sides; A limiting pulley group (80) is fixedly arranged at the bottom position of the two side frames of the middle frame (20), and the limiting roller group (80) includes two rollers (81) arranged side by side, and the two rollers (81) arranged side by side abut against the two side frames of the base side frame (11) from both sides.

7. The lifting device for replacing a column-mounted load switch according to claim 1, characterized in that: A limiting pulley group (80) is fixedly arranged at the bottom position of the two side frames of the inner frame (30), and the limiting roller group (80) includes two rollers (81) arranged side by side, and the two rollers (81) arranged side by side abut against the two side frames of the middle frame (20) from both sides; A limiting pulley group (80) is fixedly arranged at the top position of the two side frames of the middle frame (20), and the limiting roller group (80) includes two rollers (81) arranged side by side, and the two rollers (81) arranged side by side abut against the two side frames of the inner frame (30) from both sides.

8. The lifting device for replacing a column-mounted load switch according to claim 1, characterized in that: A limiting pulley group (80) is fixedly arranged at the four corners of the load platform (50), and the limiting roller group (80) includes two rollers (81) arranged side by side. The two rollers (81) arranged side by side abut against two side frames of the inner frame (30) from both sides.

9. The lifting device for replacing a column-mounted load switch according to claim 1, characterized in that: A diagonal brace (12) is provided between the upper parts of the two side frames of the two base side frames (11) at the rear side; The two base side frames (11) are respectively provided with mutually connected cross beams (13) at the tops of the front and rear sides.

10. The lifting device for replacing a column-mounted load switch according to claim 1, characterized in that: The load platform (50) is made of insulating material.

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