A hoisting apparatus for transformer installation

Abstract

The utility model relates to a hoisting equipment for transformer installation belongs to the electric power equipment assembly technical field, aims at solving the problem of big intensity of labour and low efficiency brought by artificial frequent adjustment bandage spacing in traditional hoisting operation. Its core technical scheme lies in: in hoisting equipment and winding addition limiting mechanism, this mechanism is by contact lever and two rotatory connection support rod constitute, and the support rod upper end is contacted with the bandage vertical drop position, through the drive member control support rod included angle, and then adjust the opening amplitude of bandage. The utility model carries out control to the bandage spacing with the aid of automation mode, avoided the operation of artificial head up arm, effectively reduced the intensity of labour, improved the assembly efficiency and safety, is applicable to the efficient installation of dry-type transformer winding.

Description

Technical Field

[0001] This utility model relates to the field of power equipment assembly technology, and in particular to a hoisting device for transformer installation. Background Technology

[0002] During the installation of dry-type transformers, the hoisting and assembly of the windings are achieved using hoisting equipment and slings for transport. Traditional methods require manual wrapping of the slings around the side of the winding at least two to three times, with knots or metal clips used to secure the ends of the slings to ensure relative stability between the windings and the slings during hoisting. Although this method has been used in the industry for a long time, it is highly dependent on manual labor, lacks sufficient automation, and cannot meet the demands of modern power equipment for efficient and precise assembly.

[0003] A key issue with existing technology is that adjusting the strap spacing requires manual intervention. When the straps drop from both ends of the lifting hook, gravity naturally reduces their spacing. If the drop width is less than the winding width, the operator must tilt their head back and manually spread the strap ends outwards to complete the winding and securing operation. Continuous observation and adjustment are necessary during assembly, but manual operation easily leads to errors, such as dimensional and positional errors, which affect assembly accuracy. To reduce this impact, more precise assembly methods and equipment, such as adjustment and lamination, are needed to ensure assembly accuracy.

[0004] Traditional hoisting methods also have significant efficiency limitations. During the installation of large transformers, to ensure safety and precision, preparatory work such as strap wrapping and spacing adjustment must be performed before each hoisting operation. While these steps are necessary, they result in longer hoisting times for individual units, significantly impacting overall assembly efficiency. Furthermore, the instability of manual operation can lead to uneven stress on the straps, causing winding tilting or collisions, further increasing rework rates, especially in the hoisting of windings weighing several tons.

[0005] In terms of safety, operators need to support the harnesses on the ground at a height, and the act of looking up and raising their arms can easily lead to neck and shoulder muscle fatigue, increasing the risk of falls. Furthermore, if the hoisting equipment suddenly starts or the harness breaks while manually adjusting the harnesses, operators face a high risk of mechanical injury due to the lack of effective protection. The traditional 'manually-driven' model severely restricts installation efficiency and safety. Utility Model Content

[0006] To address the limitations of existing technologies, this invention proposes a lifting device for transformer installation. This device can automatically control the distance between the dangling ends of the straps, reducing the workload of operators and ensuring balanced strap tension, thereby guaranteeing the safety of the lifting operation.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: A lifting device for transformer installation includes a lifting device with a strap hanging on its lower side. The two ends of the strap are movably connected to the winding. A limit mechanism is provided between the lifting device and the winding. The limit mechanism is fixedly connected to the middle section of the strap. The limit mechanism includes a contact rod. Two support rods are rotatably connected to the side end of the contact rod. The upper ends of the two support rods abut against the lower side of the strap. Furthermore, a driving member is provided between each support rod and the contact rod. When the distance between the lifting device and the winding is shortened, the included angle between the two support rods decreases under the drive of the driving member.

[0008] Preferably, the driving component includes a follower rod disposed on the upper end of the contact rod and slidably connected to the contact rod axially. The follower rod and the far end of the contact rod respectively abut against the winding and the hoisting equipment. The driving component also includes a collar disposed on the upper end of the contact rod and slidably connected to the contact rod axially. The side end of the collar is rotatably connected to two support rods. Furthermore, the collar maintains a completely opposite trend in motion state to the follower rod through a transmission component.

[0009] Preferably, the transmission component includes a U-shaped transmission tube with an upward opening, and two vertical sections of the transmission tube are respectively sealed and slidably connected with mating parts. The two mating parts correspond to the collar and the follower rod respectively, and the two mating parts are fixedly connected to the collar and the follower rod respectively.

[0010] Preferably, a return spring is provided between the follower rod and the contact rod, with the two axial ends of the return spring abutting against the near ends of the follower rod and the contact rod, respectively. Furthermore, when the return spring is not affected by external force, the distance between the follower rod and the contact rod is at its maximum value.

[0011] Preferably, the follower rod has receiving grooves on its left and right sides, and the strap is embedded in the receiving grooves and fixedly connected to the follower rod.

[0012] Preferably, the upper end of the follower rod is provided with a positioning groove, the upper end of the positioning groove is an open structure, and the lower end face of the positioning groove is an arc-shaped surface, and the lower end face of the positioning groove is in contact with the hoisting equipment.

[0013] Preferably, the upper end of the support rod has a notch or groove, and the strap is located inside the notch or groove.

[0014] Preferably, the upper end of the support rod is fixedly connected to a positioning plate with a vertical U-shaped structure, the strap is located inside the U-shaped opening of the positioning plate, and the end face of the positioning plate that contacts the strap is an arc-shaped surface.

[0015] Preferably, the two ends of the strap are respectively fixedly connected to a limiting plate with a vertical U-shaped surface and the U-shaped opening facing upwards, the winding is embedded inside the U-shaped opening of the limiting plate, and the side end of the winding abuts against the two vertical sections of the limiting plate.

[0016] Preferably, an elastic pad is fixedly connected inside the U-shaped opening of each of the limiting plates, and the elastic pad abuts against the limiting plate.

[0017] Compared with the prior art, the beneficial effects of this utility model are: This invention incorporates a limiting mechanism, including a contact rod, a support rod, and a drive component, between the hoisting equipment and the winding. The drive component enables automated control of the support rod angle and dynamic adjustment of the opening and closing gap of the drooping straps, preventing the strap spacing from becoming smaller than the winding width due to gravity. This eliminates the need for manual strap opening, simplifying the operation. Furthermore, the automated adjustment design prevents operators from tilting their heads and raising their arms, significantly reducing neck and shoulder fatigue and alleviating labor intensity. In addition, the mechanical structure replaces manual strap positioning, precisely adjusting the strap spacing, reducing winding tilting and collisions, ensuring stable installation quality, and thus improving the safety and efficiency of dry-type transformer assembly. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the overall structure of the hoisting equipment of this utility model; Figure 3 This is a schematic diagram showing the cooperation relationship between the follower rod and the contact rod of this utility model; Figure 4 This is a schematic diagram showing the fit between the spring support rod and the collar of this utility model; Figure 5 This is a schematic diagram showing the positional relationship between the support rod and the collar of this utility model; Figure 6 This is a schematic diagram showing the connection relationship between the transmission component and the collar of this utility model.

[0019] In the diagram: 1. Lifting equipment; 2. Limiting mechanism; 201. Follower rod; 202. Contact rod; 203. Support rod; 204. Collar; 205. Transmission component; 2051. Mating part; 2052. Transmission pipe; 206. Return spring; 207. Positioning plate; 208. Receiving groove; 209. Positioning groove; 3. Winding; 4. Binding strap; 5. Elastic pad; 6. Limiting plate. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] A hoisting device 1 for transformer installation is primarily designed to simplify the operator's workflow, improve the overall assembly efficiency of dry-type transformers, and thus effectively shorten the assembly cycle. Furthermore, by automatically controlling the opening and closing range of the binding strap 4, the device eliminates the cumbersome action of operators having to tilt their heads back and raise their arms to receive the binding strap 4, effectively reducing physical exertion and further lowering labor intensity.

[0023] Please see Figure 1 Similar to existing devices, the lower end (i.e., the lifting hook / claw of the lifting device 1) of the hoisting equipment 1 (traffic crane or corresponding hoisting tool) in this application is equipped with a binding strap 4. In existing devices, by wrapping the binding strap 4 around the side end of the winding 3 (the binding strap 4 is wrapped up and down), the binding strap 4 and the winding 3 are relatively fixed by using a knot, thereby achieving the technical effect of hoisting the winding 3 to complete the assembly by cooperating with the hoisting equipment 1 and the binding strap 4.

[0024] Please see Figure 1 and Figure 2 Unlike existing technology devices, this device has a limiting mechanism 2 between the hoisting equipment 1 and the winding 3. The limiting mechanism 2 is fixedly connected to the middle section of the binding strap 4, so that the limiting mechanism 2 and the binding strap 4 can be regarded as a relatively fixed structure. This can reduce additional connection procedures. That is, the operator only needs to insert the lifting hook into the gap between the binding strap 4 and the limiting mechanism 2 to simultaneously complete the fixing of the binding strap 4 and the hoisting equipment 1.

[0025] Specifically, please refer to Figure 2 The limiting mechanism 2 includes a contact rod 202, with two support rods 203 on its side. The upper ends of the two support rods 203 abut against the lower side of the strap 4 (i.e., the lower side of the strap 4 at both ends of the lifting hook). This utilizes the rotatable connection between the support rods 203 and the contact rod 202. In actual operation, by changing the included angle between the two support rods 203, the support rods 203 can be used to support the strap 4, preventing the width of the strap 4 between the ends of the lifting hook from being less than the width of the winding 3 due to gravity. This avoids the need for operators to perform additional operations on the ends of the strap 4, thereby reducing operational steps and lowering the operator's workload.

[0026] It is worth noting that a driving component is provided between each support rod 203 and the contact rod 202. The driving component can control the distance between a single support rod 203 and the contact rod 202 (combined with the characteristic that the lower end of the support rod 203 is rotatably connected to the contact rod 202, changing the distance between the two by the driving component is equivalent to changing the rotation angle of a single support rod 203), that is, controlling the included angle between the two support rods 203.

[0027] In practical applications, the driving component can be either electrically driven or mechanically driven. Electrical drive utilizes an electric actuator or lead screw structure to control the distance between the upper end of a single support rod 203 and the contact rod 202. During this process, it is crucial to ensure a smooth rotational connection between the upper end of the support rod 203 and the driving component to prevent stroke conflicts.

[0028] Meanwhile, it is worth noting that the process of controlling the rotation of a single support rod 203 by the driving component can either increase the included angle between the two support rods 203 before the hook falls, keeping the distance between the two ends of the strap 4 greater than the distance of the winding 3, and then control the hook to drive the limiting mechanism 2 and the strap 4 to move downward; or it can be that the hook is first controlled to drive the limiting mechanism 2 and the strap 4 to move downward, and during the downward movement of the limiting mechanism 2 and the strap 4, the technical effect of increasing the included angle between the two support rods 203 is achieved by controlling the limiting mechanism 2.

[0029] From the perspective of reducing assembly time, this device stipulates that when the distance between the hoisting equipment 1 and the winding 3 is shortened, that is, when the hoisting hook drives the limiting mechanism 2 and the binding strap 4 to move downward, the included angle between the two support rods 203 is reduced under the drive of the drive component. This can reduce the operation time of the initial drive mechanism to control the increase of the included angle between the two support rods 203.

[0030] Furthermore, due to the complex on-site assembly environment (multiple processes require components that interfere with each other), and the fact that the limiting mechanism 2 needs to move up and down with the strap 4 in actual operation, as shown in the figure, this device specifies that the driving component adopts a mechanical driving method. This can avoid conflicts between the corresponding power lines and control lines and other structures on site.

[0031] Specifically, please refer to Figure 3 , Figure 4 The driving component includes a follower rod 201 disposed on the upper end of the contact rod 202 and axially slidably connected to the contact rod 202 (vertical sliding connection). The follower rod 201 is fixedly connected to the strap 4, and the lifting hook passes through the gap between the follower rod 201 and the strap 4. In actual operation, by limiting the contact rod 202 and the follower rod 201 to only a sliding connection (the follower rod 201 is designed as an inverted T-shaped structure), it is ensured that the limiting mechanism 2 and the lifting hook can move synchronously, achieving the expected technical effect.

[0032] It is worth noting that, since only the contact rod 202 and the follower rod 201 are slidably connected here, when the hook moves upward, the distance between the follower rod 201 and the contact rod 202 increases (the follower rod 201 keeps synchronized with the hook, and the contact rod 202 is delayed relative to the hook). After the distance between the follower rod 201 and the contact rod 202 reaches its maximum value, the contact rod 202 moves synchronously with the hook.

[0033] Therefore, this device also has a collar 204 axially slidably connected to the upper end of the contact rod 202, and the side end of the collar 204 is rotatably connected to the two support rods 203. At this time, by utilizing the difference between the diameter of the collar 204 and the distance from the lower end of the support rod 203 to the central axis of the contact rod 202, the collar 204 can be moved upward, and at the same time, the included angle between the support rod 203 and the contact rod 202 gradually decreases, achieving the expected technical effect.

[0034] Based on this, the device constrains the collar 204 to maintain a completely opposite motion state to the follower rod 201 through the transmission component. That is, in actual operation, after the lifting hook rises and moves above the winding 3 (the distance between the contact rod 202 and the follower rod 201 is at its maximum, and through the transmission component, the collar 204 is at its lowest point of travel, and the angle between the two support rods 203 is at its maximum), the lifting hook drives the strap 4 and the limiting mechanism 2 to move downward. During this process, the distance between the contact rod 202 and the follower rod 201 gradually decreases (at this time, the contact rod 202 abuts against the winding 3, and only the follower rod 201 moves downward with the lifting hook), the transmission component drives the collar 204 to rise, and at the same time, the distance between the two support rods 203 gradually decreases, closely fitting the outside of the winding 3. This step requires the end of the strap 4 to first be horizontal with the winding 3, and then to make close contact with the winding 3. This avoids the operator manually grabbing the end of the strap 4. Furthermore, this measure also avoids the support rod 203 bearing a large horizontal reaction force during the hoisting of winding 3, thereby fully ensuring equipment safety.

[0035] It is worth noting that in actual operation, there are several ways to achieve the reverse motion between the follower rod 201 and the collar 204. For example, by using the meshing of a gear and rack, the reverse motion between the follower rod 201 and the collar 204 can be achieved by utilizing the different transmission directions on both sides of the gear.

[0036] In addition, such as Figure 2 , Figure 6As shown, a transmission tube 2052 with a U-shaped vertical structure and an upward-facing U-shaped opening can also be fixedly connected to the contact rod 202. The transmission tube 2052 has two sealing sliding fittings 2051 inside its two vertical sections. These fittings 2051 correspond one-to-one with and are fixedly connected to the collar 204 and the follower rod 201, respectively. This utilizes the invariant characteristics of the sealing cavity between the two fittings 2051 to achieve the transmission effect between the collar 204 and the follower ring.

[0037] It should be noted that in actual operation, depending on the actual working conditions, the transmission pipe 2052 can be filled with liquid (such as special hydraulic oil) between the two mating parts 2051, or air can be used directly for transmission.

[0038] Furthermore, a return spring 206 is provided between the follower rod 201 and the contact rod 202. The two ends of the return spring 206 are in close contact with the follower rod 201 and the contact rod 202 respectively, providing continuous power for the reset between the two rods. This ensures that even if wear or corrosion occurs during long-term use, the distance between the follower rod 201 and the contact rod 202 can remain adjustable, thereby maintaining the effective support of the support rod 203 for the strap 4.

[0039] Therefore, this device stipulates that when the return spring 206 is not affected by external force, the distance between the follower rod 201 and the contact rod 202 is at its maximum value.

[0040] Furthermore, to prevent horizontal movement between the strap 4 and the support rod 203, which would cause the support rod 203 to lose its supporting effect on the strap 4, this device has a notch groove at the upper end of the support rod 203, and the strap 4 is located inside the notch groove.

[0041] Specifically, the upper end of the support rod 203 is fixedly connected to a positioning plate 207 with a vertical U-shaped structure. The strap 4 is located inside the U-shaped opening of the positioning plate 207 (the U-shaped opening faces upward, which can avoid clamping the strap 4, thereby ensuring that the strap 4 can move freely relative to the support rod 203, that is, ensuring that the strap 4 can move downward relative to the support rod 203 under the action of gravity during the downward movement of the lifting hook, thereby ensuring sufficient binding length).

[0042] Furthermore, this device specifies that the end face of the positioning plate 207 that contacts the strap 4 is an arc-shaped surface. This increases the contact area between the positioning plate 207 and the strap 4, reduces the contact pressure, and effectively prevents excessive wear of the strap 4.

[0043] Furthermore, the device has a positioning groove 209 at the upper end of the follower rod 201. This utilizes the open structure of the upper end of the positioning groove 209 to ensure that the lifting hook can be embedded in the positioning groove 209, thereby improving the positional constraint effect between the follower rod 201 and the lifting hook, and ensuring that the lifting hook can press the follower rod 201 to move downward when it moves downward.

[0044] It is worth noting that this device specifies that the lower end face of the positioning groove 209 is an arc-shaped surface, and the lower end face of the positioning groove 209 is in contact with the lifting equipment 1 (lifting hook). This ensures sufficient contact area between the positioning groove 209 and the lifting hook. At the same time, the arc-shaped surface design increases the depth, further enhancing the constraint on the lifting hook and effectively preventing horizontal sliding between the follower rod 201 and the lifting hook.

[0045] It should be noted that the device has a receiving groove 208 at the upper end of the follower rod 201, and the strap 4 is located inside the receiving groove 208 and fixedly connected to the follower rod 201, so as to ensure that the strap 4 can drive the limiting mechanism 2 to move upward during the upward movement of the lifting hook.

[0046] Specifically, in actual operation, this device can be equipped with corresponding plugs inside the receiving groove 208 and around the strap 4. The plugs, by applying a clamping force, work together with the frictional resistance between the strap 4 and the follower rod 201 to achieve relative fixation between the strap 4 and the follower rod 201. At the same time, this method of using plugs also allows the strap 4 to be replaced in practice, ensuring that the wear value of the strap 4 remains within the expected value during long-term use.

[0047] In addition, in actual operation, the width of the receiving groove 208 can be controlled to be smaller than the thickness of the strap 4, so that the strap 4 located in the receiving groove 208 directly forms a strong mutual force with the follower rod 201, thereby achieving fixation.

[0048] Please refer to Figure 2 , Figure 4 Furthermore, in order to save assembly time and reduce binding time, the device has a vertical U-shaped limiting plate 6 fixedly connected to both ends of the binding strap 4 with the U-shaped opening facing upward. This design cleverly utilizes the U-shaped opening of the limiting plate 6 to embed the winding 3, ensuring that the winding 3 can rise synchronously when the binding strap 4 rises with the lifting hook.

[0049] It is worth noting that since the single limiting plate 6 is subjected to force on one side (the reaction force of the winding 3), in actual operation, in order to avoid the limiting plate 6 from tilting during its upward movement and thus avoid point contact between the limiting plate 6 and the winding 3, which would damage the covering layer on the surface of the winding 3, this device specifies that the side end of the winding 3 abuts against the two vertical sections of the limiting plate 6. In this way, the structural features of the limiting plate 6 can effectively constrain the winding 3, ensuring that the main force point is in the horizontal section of the limiting plate 6, thereby reducing the pressure on the surface of the winding 3 by increasing the contact area.

[0050] Furthermore, in order to fully avoid the limiting plate 6 from damaging the surface coating of the winding 3, an elastic pad 5 (made of nitrile rubber with a Shore hardness of 60, which has both cushioning and wear resistance) is fixedly connected inside the U-shaped opening of the limiting plate 6. The elastic pad 5 abuts against the limiting plate 6.

[0051] It is worth noting that the elastic pad 5 will deform under pressure. To enhance the structural strength of the limiting plate 6, this device adds trapezoidal reinforcing ribs between the vertical and horizontal sections connecting the limiting plate 6 and the strap 4. Figure 4 As shown. After the winding 3 compresses the elastic pad 5 and causes it to deform, the outer end of the winding 3 comes into contact with the vertical part of the reinforcing rib, thereby achieving a tight fit between the side end of the winding 3 and the vertical sections on both sides of the limiting plate 6, achieving the expected technical effect.

[0052] In practical applications, this utility model is as follows: 1. Initial state: The return spring 206 is in a naturally extended state, the distance between the follower rod 201 and the contact rod 202 reaches its maximum value, the collar 204 is in the lowest position of its stroke, the included angle between the two support rods 203 reaches its maximum, and the opening distance between the limiting plates 6 at both ends of the strap 4 is greater than the width of the winding 3.

[0053] 2. Lowering the lifting hook: The lifting equipment 1 drives the lifting hook to move downwards, and the lifting hook is embedded in the positioning groove 209 of the follower rod 201, applying pressure to the follower rod 201 to make it move downwards synchronously. The follower rod 201 drives the binding strap 4 and the limiting mechanism 2 to move downwards as a whole through the receiving groove 208.

[0054] 3. Contact winding 3 and angle adjustment: After the lower end of the contact rod 202 contacts the upper end surface of the winding 3, it stops moving downwards, while the follower rod 201 continues to move downwards, compressing the return spring 206. The follower rod 201 drives the upper mating part 2051 inside the transmission tube 2052 to move downwards, and pushes the lower mating part 2051 and the collar 204 upwards through hydraulic oil; the upward movement of the collar 204 drives the two support rods 203 to rotate around the contact rod 202, the included angle between the support rods 203 decreases, and the binding strap 4 is restrained inwards by the notch and the positioning plate 207, and the U-shaped opening of the limiting plate 6 gradually fits against both sides of the winding 3.

[0055] 4. Limiting and fixing: The follower rod 201 moves downward to the limit position, the included angle of the support rod 203 reaches the minimum value, the limiting plates 6 at both ends of the strap 4 completely wrap the winding 3, and the elastic pad 5 deforms under pressure and comes into close contact with the side end of the winding 3, thereby realizing the automatic centering and fixing of the winding 3.

[0056] 5. Lifting process: The lifting hook pulls the follower rod 201 upward, causing the winding 3 to rise smoothly. At the same time, the support rod 203 maintains a stable angle under the support of the return spring 206, effectively preventing the winding 3 from swaying during the lifting process.

[0057] 6. Lowering and unlocking: After the winding 3 is hoisted to the predetermined position, the lifting hook is slowly lowered, and the limiting plate 6 is then separated from the winding 3. After that, the lifting hook moves upward and the follower rod 201 moves upward relative to the contact rod 202. During this process, the collar 204 moves downward and causes the included angle of the support rod 203 to expand, thus successfully completing the hoisting and unlocking process.

[0058] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lifting device for transformer installation, comprising a lifting device with straps attached to its lower side, the two ends of which are movably connected to the windings, characterized in that: A limit mechanism is provided between the hoisting equipment and the winding, and the limit mechanism is fixedly connected to the middle section of the binding strap. The limiting mechanism includes a contact rod, with two support rods rotatably connected to the side end of the contact rod. The upper ends of the two support rods abut against the lower side of the strap. Furthermore, a driving component is provided between each support rod and the contact rod. When the distance between the hoisting equipment and the winding is shortened, the included angle between the two support rods decreases under the drive of the driving component.

2. The hoisting equipment for transformer installation according to claim 1, characterized in that: The driving component includes a follower rod disposed at the upper end of the contact rod and slidably connected to the contact rod axially, the follower rod and the far end of the contact rod respectively abutting against the winding and the hoisting equipment; The driving component also includes a collar disposed on the upper end of the contact rod and slidably connected to the contact rod axially. The side end of the collar is rotatably connected to two support rods. Furthermore, the collar maintains a completely opposite trend in motion to the follower rod through a transmission component.

3. The hoisting equipment for transformer installation according to claim 2, characterized in that: The transmission component includes a U-shaped transmission tube with an upward opening. The two vertical sections of the transmission tube are respectively sealed and slidably connected with mating parts. The two mating parts correspond to the collar and the follower rod respectively, and the two mating parts are fixedly connected to the collar and the follower rod respectively.

4. The hoisting equipment for transformer installation according to claim 2, characterized in that: A return spring is provided between the follower rod and the contact rod. The two axial ends of the return spring abut against the near ends of the follower rod and the contact rod, respectively. When the return spring is not affected by external force, the distance between the follower rod and the contact rod is at its maximum value.

5. The hoisting equipment for transformer installation according to claim 2, characterized in that: The follower rod has receiving slots on its left and right sides, and the strap is embedded in the receiving slots and fixedly connected to the follower rod.

6. The hoisting equipment for transformer installation according to claim 2, characterized in that: The upper end of the follower rod is provided with a positioning groove. The upper end of the positioning groove is an open structure, and the lower end face of the positioning groove is an arc-shaped surface. The lower end face of the positioning groove is in contact with the hoisting equipment.

7. The hoisting equipment for transformer installation according to claim 1, characterized in that: The upper end of the support rod has a notch, and the strap is located inside the notch.

8. The hoisting equipment for transformer installation according to claim 7, characterized in that: The upper end of the support rod is fixedly connected to a positioning plate with a vertical U-shaped structure. The strap is located inside the U-shaped opening of the positioning plate, and the end face of the positioning plate that contacts the strap is an arc-shaped surface.

9. The hoisting equipment for transformer installation according to claim 1, characterized in that: The two ends of the strap are respectively fixedly connected to a limiting plate with a vertical U-shaped surface and the U-shaped opening facing upwards. The winding is embedded inside the U-shaped opening of the limiting plate. At the same time, the side end of the winding abuts against the two vertical sections of the limiting plate.

10. A hoisting device for transformer installation according to claim 9, characterized in that: An elastic pad is fixedly connected inside the U-shaped opening of each of the limiting plates, and the elastic pad abuts against the limiting plate.

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