Substation main transformer accessory hoisting butt joint system

Abstract

This invention discloses a substation main transformer accessory hoisting and docking system, relating to the field of substation construction technology. It further includes a guiding device, a docking detection module, and a controller. The guiding device includes: a lower rail, which is suspended below the pre-installed position of the heat dissipation unit and extends along the length of the main transformer body; a connector 1, detachably connected to the lower rail and the pre-installed fixing frame of the heat dissipation unit; and multiple guide trolleys slidably connected to the lower rail. The heat dissipation unit is placed on the upper part of the guide trolley on the lower rail. The docking detection module includes a detection unit 1 located at the front and rear ends of the guide trolley, and a detection unit 2 located on the upper part of the guide trolley with its detection end facing upwards. The controller is electrically connected to the docking detection module and the hoisting device and is used to send detection information to at least the hoisting device. This application has the effect of improving construction safety and reducing manpower occupation.

Description

Technical Field

[0001] This application relates to the field of substation construction technology, and in particular to a substation main transformer accessory hoisting and docking system. Background Technology

[0002] A substation is a core facility in a power transmission and transformation system used to transform voltage, receive and distribute electrical energy, and control the direction of power flow. The main equipment in a substation includes transformers, insulators, disconnecting switches, and control and protection equipment. Among them, transformers are divided into main transformers and station transformers. Station transformers are usually used to supply power to the equipment within the station, while main transformers are used to supply power to the outside. Therefore, the size and scale of main transformers are often relatively large.

[0003] A main transformer typically consists of a transformer body, an oil tank, and a cooling device. Because the main transformer is large (6-12m*3-5m*3-6m), the cooling device, as an accessory, is often also relatively large. During its installation, not only do cranes need to be used, but multiple workers also need to stand on the top, side, and bottom of the transformer body to work together to support the cooling device and precisely align it with the docking structure on the side of the transformer body for installation and fixation.

[0004] While the above process can complete the installation of the corresponding accessories, it requires a lot of manpower during construction. Furthermore, since the main consideration in the design stage of the main transformer is its electrical performance, rather than how people can stand on the main transformer for construction, the main transformer lacks a structure to guide the construction. Workers standing on the main transformer often stand on the edge and lean against the fixing frame (pipe) of the heat dissipation device to support the heat dissipation unit. If the worker is not tall enough, leaning or supporting is very difficult, resulting in relatively poor construction safety. Therefore, this application proposes a new technical solution. Summary of the Invention

[0005] To improve construction safety and reduce manpower requirements, this application provides a substation main transformer accessory hoisting and docking system.

[0006] This application provides a substation main transformer accessory hoisting and docking system, which adopts the following technical solution:

[0007] A substation main transformer accessory hoisting and docking system includes a hoisting device, characterized in that it further includes a guiding device, a docking detection module, and a controller, wherein the guiding device includes:

[0008] The lower track is installed above the pre-installed position of the heat dissipation unit, and its length extends along the length of the main transformer body.

[0009] Connector 1, which is detachably connected to the pre-installed mounting bracket of the lower rail and the heat dissipation unit;

[0010] The guide car, which is slidably connected to the lower track, and there are multiple of them;

[0011] The heat dissipation unit is placed on the upper part of the guide vehicle on the lower track. The docking detection module includes a detection unit one set at the front and rear ends of the guide vehicle and a detection unit two set on the upper part of the guide vehicle with the detection end facing upward.

[0012] The controller is electrically connected to the docking detection module and the lifting device and is used to send detection information to at least the lifting device.

[0013] Optionally, the upper part of the guide vehicle is fixed with an elastic pad and a baffle, the baffle being located on the side of the guide vehicle closer to the main transformer body;

[0014] The docking detection module also includes a detection unit three disposed on the baffle, wherein the detection end of the detection unit three faces the side of the baffle away from the main transformer body;

[0015] The detection unit one and detection unit three include a distance measuring sensor, and the detection unit two includes a pressure sensor.

[0016] Optionally, the lower track includes multiple unit rails, which are laterally distributed and the ends of two adjacent unit rails are close to each other. Each unit rail is detachably connected to multiple connectors along its length.

[0017] Optionally, the distance sensor of the first detection unit is embedded in the guide vehicle and electrically connected to the controller. The controller is configured to adjust the moving speed of the lifting device based on the distance data fed back by the distance sensor.

[0018] Optionally, the guide vehicle includes two unit bodies, with an adjusting rod between the two unit bodies. The adjusting rod has multiple bolt holes along its length, and the opposite side walls of the unit bodies have mounting holes for inserting the adjusting rod.

[0019] Optionally, the connector includes a clamp and an L-plate. The clamp is fitted onto the pre-installed mounting bracket of the heat dissipation unit. One end of the L-plate is fixed upward to the bottom of the clamp, and the other end is fixed laterally to the side of the lower track.

[0020] The guiding device further includes:

[0021] The upper rail is located above the pre-installed mounting bracket of the heat dissipation unit;

[0022] Connector 2, which is detachably connected to the pre-installed mounting bracket of the upper rail and the heat dissipation unit;

[0023] The multi-functional fastener has one end that slides onto the upper track, and the other end that passes over the upper part of the heat dissipation device and points downwards.

[0024] The force-sharing hook is connected to the downward end of the multi-functional fastener by a rope;

[0025] The multi-functional fastener includes two unit fastener plates arranged side by side, with the opposing sides of the two unit fastener plates symmetrically recessed to form a notch for the lifting rope of the lifting device to pass through;

[0026] The lifting rope of the lifting device is fixed with a limiting block, which is located below the notch of the unit buckle plate and has a cross-sectional area larger than the notch.

[0027] The lower track unit rail is fixed to a locking post on the side away from the main transformer body. The force-shaping hook hooks onto the locking post, and the inner wall of the force-shaping hook is embedded with ball bearings.

[0028] Optionally, a support is installed on the lifting rope of the lifting device, and a hydraulic cylinder is installed on the support. The telescopic end of the hydraulic cylinder faces downward and is fixed to the limiting block. The opposing sidewalls of the unit buckle plate are symmetrically concave to form a notch for the telescopic end of the hydraulic cylinder to pass through. The hydraulic cylinder is electrically connected to the controller.

[0029] Optionally, the multifunctional fastener is slidably connected to one end of the upper track and fixed with a sliding component. The sliding component includes a sliding block and a vertical guide block. The sliding block is slidably connected to the upper track and its bottom end is in-between with the upper track. The vertical guide block is fixed to the side of the sliding block near the unit fastener plate, and the end of the unit fastener plate is slidably connected to the vertical guide block.

[0030] In summary, this application has the following beneficial technical effects: This application uses a guide vehicle to hoist the heat dissipation unit (i.e., a single heat dissipation device) onto the lower rail. Therefore, as long as the position of the lower rail is correct, the crane operator can determine whether the heat dissipation unit is hoisted into place by observing the detection values ​​fed back by detection unit one and detection unit two. This process no longer requires too many staff to support and guide the heat dissipation unit, reducing manpower occupation and improving construction safety and efficiency. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the overall structure of this application;

[0032] Figure 2 This is a schematic diagram of the lower track structure in this application;

[0033] Figure 3 This is a schematic diagram of the guiding device in this application;

[0034] Figure 4 This is an end view of this application;

[0035] Figure 5 This is a schematic diagram of the controller connection in this application.

[0036] Explanation of reference numerals in the attached drawings: 1. Main transformer; 11. Pre-installed mounting bracket; 2. Guiding device; 21. Lower rail; 211. Unit rail; 212. Locking post; 22. Connector 1; 221. Clamp 1; 222. L-plate; 23. Guide car; 231. Elastic pad; 232. Baffle; 233. Unit car body; 234. Adjusting rod; 24. Upper rail; 25. Connector 2; 26. Unit buckle plate; 27. Force distribution hook; 28. Sliding component; 281. Vertical guide block; 282. Sliding block; 3. Docking detection module; 31. Detection unit 1; 32. Detection unit 2; 33. Detection unit 3; 4. Controller; 5. Heat dissipation unit; 61. Lifting rope; 62. Support; 63. Limiting block; 64. Hydraulic cylinder. Detailed Implementation

[0037] The following is in conjunction with the appendix Figures 1-5 This application will be described in further detail.

[0038] This application discloses a substation main transformer accessory hoisting and docking system.

[0039] Reference Figure 1 The substation main transformer accessory hoisting and docking system includes a hoisting device, which can be a crawler crane. In the current scenario, the main transformer 1 is located on the side of the crane and has a horizontally placed cuboid structure. Both are existing technologies and will not be described in detail here.

[0040] The system also includes a guiding device 2, a docking detection module 3, and a controller 4. In use, the crane operator uses the guiding device 2 to guide the heat dissipation device (such as a large radiator) to move laterally from one end of the main transformer 1 with the help of the crane. The operator judges whether the device is in place based on the feedback from the docking detection module 3. The controller 4 analyzes and processes the data during this process and provides the results for the crane operator and other staff to refer to.

[0041] The following are explanations:

[0042] The guiding device 2 includes a lower rail 21, a connector 22, and a guiding vehicle 23. The lower rail 21 is suspended below the pre-installed position of the heat dissipation unit 5, that is, below the front of the two long pipes at the front of the main transformer 1. The length of the lower rail 21 extends along the length direction of the main transformer 1 body.

[0043] Connector 22 is detachably connected to the pre-installed mounting bracket 11 of the lower rail 21 and the heat dissipation unit 5 to enable installation of the lower rail 21. It can be understood that the pre-installed mounting bracket 11 of the heat dissipation unit 5 refers to the two large pipes at the front of the main transformer 1, which are installed on the side wall of the main transformer 1. The pre-installed mounting bracket 11 is essentially a coolant circulation pipe. For example, the lower pipe connects to an external pipe, which connects to the interface at the bottom of the heat dissipation unit 5. Then, the medium requiring heat exchange flows out from the pipe at the top of the heat dissipation unit 5 and into the upper pipe, thus forming a circulation. The structure of the main transformer 1 is existing technology and will not be described further.

[0044] The guide vehicle 23 is slidably connected to the lower track 21 in multiple ways. In this embodiment, the heat dissipation unit 5 is generally rectangular and is placed on the upper part of the guide vehicle 23.

[0045] The docking detection module 3 includes a detection unit 31 located at the front and rear ends of the guide vehicle 23 and a detection unit 32 located on the upper part of the guide vehicle 23 with the detection end facing upward. The front and rear ends of the guide vehicle 23 are the two ends in the length direction of the main transformer 1. The detection unit 31 is used to detect the relative position of the guide vehicle 23, and the detection unit 32 is used to assist in verifying whether the heat dissipation unit 5 is placed on the guide vehicle 23, so as to ensure that the position of the heat dissipation unit 5 is as correct as possible during the use stage.

[0046] The controller 4 is electrically connected to the docking detection module 3 and the control system of the lifting device and is used to send detection information to the lifting device at least.

[0047] Example of use:

[0048] First, install the lower rail 21, then place a guide trolley 23 at one end of the lower rail 21. After that, attach the hoisted heat dissipation unit 5 to the guide trolley 23. At this time, the detection unit 2 32 detects and outputs the distance difference relative to the heat dissipation unit 5, so that the crane operator can determine whether the vertical position adjustment of the heat dissipation unit 5 has been completed. Note: The heat dissipation device includes multiple heat dissipation units 5 as individual units.

[0049] Afterwards, the crane lifts the heat dissipation unit 5 and moves it along the lower track 21. During this process, the heat dissipation unit 5 moves the guide trolley 23 to the other end of the lower track 21, and the staff checks whether the lateral position is in place. If it is in place, the lateral lifting stops, and the heat dissipation unit 5 is fixed (with bolts). Subsequently, when other heat dissipation units 5 move laterally, the staff no longer needs to visually track the position of the heat dissipation unit 5; they only need to observe the detection value fed back by the detection unit 31.

[0050] According to the above settings, in this application, the heat dissipation unit 5 (i.e., the single unit of the heat dissipation device) is lifted by the guiding vehicle 23 on the lower track. Therefore, as long as the position of the lower track 21 is correct, the crane driver can judge whether the heat dissipation unit 5 is hoisted in place by observing the detection values fed back by the detection unit one 31 and the detection unit two 32. In this process, there is no need for too many workers to support and guide the heat dissipation unit 5, which reduces the manpower occupation and improves the construction safety and efficiency.

[0051] Referring to Figure 2 , in another embodiment of this application, the lower track 21 has a long plate structure, and two parallel wheel grooves are opened on the upper part, thus forming a structure with a "mountain" shape in end view; the guiding vehicle 23 includes a flat plate body and a plurality of wheels that are rotatably connected to the bottom and are evenly distributed. The wheels fall into the wheel grooves, so that the guiding vehicle 23 can move horizontally on the lower track 21 relatively stably.

[0052] An elastic cushion plate 231 and a baffle 232 are fixed to the upper part of the guiding vehicle 23. Among them, the elastic cushion plate 231 can be made of rubber. The setting of the elastic cushion plate 231 is beneficial to the effective contact between the heat dissipation unit 5 and the upper part of the guiding vehicle 23, but it does not directly and completely fall on the guiding vehicle 23, because in this embodiment, the heat dissipation unit 5 will not apply most of its gravity to the guiding vehicle 23 to prevent the lower track 21 and the first connector 22 from bending. The baffle 232 is vertically fixed on one side of the guiding vehicle 23 close to the main transformer 1 body. This setting does not block the heat dissipation unit 5 from quickly being connected to the guiding vehicle 23 and effectively reduces the possibility of the heat dissipation unit 5 deviating towards the main transformer 1.

[0053] The docking detection module 3 further includes a detection unit three 33 embedded in the baffle 232. The detection end of the detection unit three 33 faces the side of the baffle 232背离主变1本体的一侧 (this part seems to be incorrect in the original Chinese, please check and correct it). There are multiple detection unit threes 33 and they are distributed along the length direction of the baffle 232. The detection unit three 33 and the above-mentioned detection unit one 31 include distance measuring sensors, and the above-mentioned detection unit two 32 includes a pressure sensor. The pressure sensor is hidden in the elastic cushion plate 231 or at the bottom of the elastic cushion plate 231.

[0054] It can be understood that in order to achieve signal transmission, etc., a vehicle-mounted control module should be installed inside the guiding vehicle 23. The vehicle-mounted controller 4 is electrically connected to the distance measuring sensor and the pressure sensor, and a wireless communication unit (such as: 4G / 5G module) is integrally installed. The above-mentioned controller 4 can be installed in the cab of the crane, and it is interconnected with the vehicle-mounted control module through another wireless communication unit to achieve remote data sharing.

[0055] According to the above settings, the detection value of detection unit 1 31 can determine whether the position of the guide vehicle 23 is correct in the length direction relative to the main transformer 1. The detection value of detection unit 2 32 can determine whether the heat dissipation unit 5 is connected to the guide vehicle 23 (i.e., whether the vertical position of the heat dissipation unit 5 is correct). The detection value of detection unit 3 33 can determine whether the front and rear position of the heat dissipation unit 5 relative to the main transformer 1 is correct.

[0056] That is, by using multiple ranging sensors and pressure sensors in conjunction, this application can guide the crane operator to install the heat dissipation unit 5 with high precision without much assistance from others, thereby improving installation quality and ease of construction.

[0057] In another embodiment of this application, the controller 4 is configured to output track-direction hoisting deceleration prompt information based on the distance data fed back by the detection unit 31 facing the hoisting direction.

[0058] Example: When the distance data fed back by the distance measuring sensor is ≤ a, the track will output a warning message indicating that the hoisting will slow down; where a is a preset value obtained by the staff based on repeated tests, such as 50cm.

[0059] Based on the aforementioned speed reduction settings, it is possible to effectively prevent situations such as the guide vehicle 23 colliding with adjacent guide vehicles 23 due to excessive speed, failing to slow down in time and misaligning its position, or swaying due to excessive deceleration.

[0060] Regarding the determination of the detection unit 31 facing the hoisting direction, for example: the parameters of the crane are moving from the negative X-axis. The first guide vehicle 23 detects two distance measuring sensors, P1 and P2, and P1 is facing the negative X-axis. Then it is determined that the current P1 is the detection unit 31 facing the hoisting direction.

[0061] In another embodiment of this application, the lower track 21 includes a plurality of unit tracks 211, which are laterally distributed and the ends of two adjacent unit tracks 211 are close to each other. A unit track 211 is detachably connected to a plurality of connectors 22 along its length, and the plurality of connectors 22 are fixed more stably and balanced.

[0062] Based on the above configuration, the lower rail 21 is divided into multiple unit rails 211, which can better accommodate main transformers 1 of various sizes.

[0063] Reference Figure 3 and Figure 4In another embodiment of this application, each guide vehicle 23 is divided into two parts from the middle, comprising two unit vehicles 233. An adjusting rod 234 is provided between the two unit vehicles 233. The adjusting rod 234 has multiple bolt holes along its length, and matching bolts are inserted into the vehicle body. The opposite side walls of the two unit vehicles 233 have mounting holes for inserting the adjusting rod 234. The upper parts of the two unit vehicles 233 are level. When it is necessary to adjust the size of the guide vehicle 23, the depth of the adjusting rod 234 inserted into the mounting hole can be changed, and then it is fixed by bolts. With the above configuration, the guide vehicle 23 is sufficient to accommodate heat dissipation units 5 of different sizes.

[0064] More importantly:

[0065] Under these conditions, once the position of the first heat dissipation unit 5 is determined manually by the staff, the length of each guide vehicle 23 can be adjusted just right so that when the second guide vehicle 23 touches (closes to) the first guide vehicle 23, the heat dissipation unit 5 on its upper part is matched in the correct position, thereby reducing the chance of the heat dissipation unit 5 being accidentally damaged by collision during the installation process and simplifying the docking difficulty.

[0066] Reference Figure 3 and Figure 4 In another embodiment of this application, connector 22 includes clamp 221 and L plate 222. Clamp 221 can be an openable and closable annular fastener that is bolted on. After clamp 221 is fitted with the pre-installed fixing bracket 11 of heat dissipation unit 5, it is locked with bolts. One end of L plate 222 is welded upward to the bottom of clamp 221, and the other end is horizontally fixed to the side of lower track 21. The fixing method can be fixing with bolts.

[0067] The lower rail 21 can be installed in the above manner. However, without using ultra-high strength materials, the lower rail 21 is often unable to directly bear heavy weights, otherwise it is prone to bending and deformation, making it impossible to move horizontally in conjunction with the sensor-guided heat dissipation unit 5. Therefore, the following settings are also made:

[0068] Reference Figure 3 and Figure 4 The aforementioned guide device 2 also includes an upper rail 24, a second connector 25, a multi-functional fastener, and a force-sharing hook 27. The upper rail 24 is located above the pre-installed fixing frame 11 of the heat dissipation unit 5, that is, above the front horizontal pipe of the main transformer 1. This is different from the orientation of the lower rail 21, because it is necessary to avoid interfering with the crane ropes.

[0069] Connector 25 is detachably connected to the pre-installed mounting bracket 11 of the upper rail 24 and the heat dissipation unit 5. Connector 25 includes clamp 2 and vertical support leg. The structure of clamp 2 is the same as clamp 1 221. The upper part of the support leg is bolted to the bottom of the upper rail 24. Clamp 2 and the lower part of the support leg are welded together.

[0070] One end of the aforementioned multifunctional fastener is slidably connected to the upper rail 24, and the other end passes around the upper part of the heat dissipation device and extends downward, which plays a certain role in restricting each heat dissipation unit 5 and preventing the heat dissipation unit 5 from shifting arbitrarily in a direction away from the front of the main transformer 1.

[0071] The aforementioned multifunctional fastener includes two unit fastener plates 26 arranged side by side. The opposing sides of the two unit fastener plates 26 are symmetrically concave to form a notch for the lifting rope 61 of the lifting device to pass through. When the two unit fastener plates 26 come into contact, they can be temporarily fixed together into one by a C-shaped buckle.

[0072] The lifting rope 61 of the lifting device is fixed with a limiting block 63. The limiting block 63 is located below the notch of the unit buckle plate 26 and its cross-sectional area is larger than the notch. The limiting block 63 is used to support the multi-functional fastener.

[0073] The force-sharing hook 27 is connected to the downward end of the multi-functional fastener via a rope, and is used to assist in fixing the heat dissipation unit 5. The unit rail 211 of the lower rail 21 is fixed with a locking post 212 on the side opposite to the main transformer 1 body. The force-sharing hook 27 hooks onto the locking post 212, and the inside of the force-sharing hook 27 is embedded with ball bearings, which facilitates the sliding of the force-sharing hook 27 on the locking post 212.

[0074] In use, first slide one unit buckle plate 26 onto the upper rail 24, then hoist the heat dissipation unit 5 onto the guide trolley 23, then install another pair of unit buckle plates 26, then close the two unit buckle plates 26 together and temporarily join them together with C-shaped buckles; at this time, the multi-functional fastener rests on the limiting block 63, so after the force-shaping hook 27 is hooked onto the lower rail 21, the gravity on the lower rail 21 will be transmitted upward through the rope of the force-shaping hook 27 to the multi-functional fastener, becoming a downward force, and the downward force on the multi-functional fastener will be transmitted to the limiting block 63, and the limiting block 63 fixes the hoisting rope 61, so the lower rail 21 is supported and relatively less prone to deformation.

[0075] The reason for setting two unit fasteners 26 is that the hoisting device has a hoisting rope 61. As can be seen from the above process, the hoisting rope 61 must be a multi-functional fastener. Therefore, if it is not divided into two units, it will be impossible to install.

[0076] Reference Figure 4 and Figure 5In another embodiment of this application, a support 62 is fixed on the lifting rope 61 of the lifting device. Example of support 62: It is I-shaped in front view, and the lifting rope 61 passes through the center and is fixed. A hydraulic cylinder 64 is installed on the support 62. The telescopic end of the hydraulic cylinder 64 extends downward and is fixed to the limiting block 63. The opposing sidewalls of the unit buckle plate 26 are symmetrically concave to form a notch for the telescopic end of the hydraulic cylinder 64 to pass through. The hydraulic cylinder 64 is electrically connected to the controller 4.

[0077] During the work process:

[0078] If the hoisting device is not operated properly, causing the heat dissipation unit 5 to move too far downward, theoretically the heat dissipation unit 5 will fall completely onto the lower rail 21, and the lower rail 21 will be subjected to excessive force.

[0079] At this point, the lower track 21 should theoretically be able to use the rope of the component hook 27 to lift the upper suspension rope 61 to the limiting block 63 for leverage, but the limiting block 63 itself has already moved downwards, losing the condition for being able to use leverage.

[0080] To achieve this, the above settings are made so that the hydraulic cylinder 64 is shortened, pulling the limiting block 63 back to its original position, allowing the force-sharing hook 27 to use its strength to distribute the weight of the lower track 21.

[0081] Furthermore, to prevent the heat dissipation unit 5 from accidentally shifting upwards too much during hoisting and damaging the functional fasteners, the following setting is made in another embodiment of this application:

[0082] The multi-functional fastener is slidably connected to one end of the upper rail 24 and is provided with a sliding component 28. The sliding component 28 includes a sliding block 282 and a vertical guide block 281. The sliding block 282 is slidably connected to the upper rail 24 and its bottom end is in-between with the upper rail 24, that is, it is a C-shaped opening with a downward opening when viewed from the side. The vertical guide block 281 is fixed to the side of the sliding block 282 near the unit fastener plate 26. The vertical guide block 281 has a vertical groove. The end of the unit fastener plate 26 is slidably connected to the groove of the vertical guide plate through a matching slider.

[0083] With the above settings, if the heat dissipation unit 5 is accidentally pulled upwards during the horizontal lifting process of the crane, the multi-functional fastener can move upwards a little along with it, preventing it from being deformed by being pushed upwards and effectively reducing the probability of bending of the unit fastener plate 26.

[0084] Understandably, to prevent the rope of the multi-functional fastener from pulling the force hook 27 upwards and damaging the lower track 21 when the multi-functional fastener is moved up slightly, the rope of the force hook 27 is preferably slightly elastic, or a little bit of rope slack is left when initially installing the force hook 27.

[0085] Example: The bottom of the locking post 212 is covered with another elastic pad 231 (3-5cm thick), and the bottom of the elastic pad 231 is covered with a thin metal plate. When the heat dissipation unit 5 is installed, the rope of the force-shaping hook 27 is straightened, but it will not excessively flatten the elastic pad 231 of the locking post 212. In this way, the heat dissipation unit 5 drives the multi-functional fastener to move up a little, and the rope will not immediately pull up the track 21. When the heat dissipation unit 5 moves down a little, it presses on the elastic pad 231 on the upper part of the guide car 23.

[0086] To prevent the force-sharing hook 27 from detaching at will, the locking post 212 has a larger diameter, so that even if the rope of the force-sharing hook 27 is slightly loosened, it will not be positioned below the lowest point of the locking post 212.

[0087] Regarding how to determine whether the heat dissipation unit 5 is moving up or down, this can be determined by checking the pressure sensor on the guide vehicle 23.

[0088] In summary, after applying this application, apart from the crane operator, in extreme cases only one person is needed to load the heat dissipation unit 5 onto the guide vehicle 23. The crane operator can determine the hoisting and docking status of the heat dissipation unit 5 based on sensor feedback. After the heat dissipation unit 5 is hoisted into place, the worker can use a movable ladder to climb up and fix it with bolts. The entire installation process requires less manpower and is safer.

[0089] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A substation main transformer accessory hoisting and docking system, comprising a hoisting device, characterized in that: It also includes a guiding device (2), a docking detection module (3), and a controller (4), wherein the guiding device (2) includes: The lower track (21) is suspended below the pre-installed position of the heat dissipation unit (5) and its length extends along the length direction of the main transformer (1). Connector 1 (22) is detachably connected to the lower rail (21) and the pre-installed mounting bracket (11) of the heat dissipation unit (5). The guide vehicle (23) is slidably connected to the lower track (21) and there are multiple of them; Among them, the heat dissipation unit (5) is placed on the upper part of the guide vehicle (23) on the lower track (21), and the docking detection module (3) includes a detection unit one (31) set at the front and rear ends of the guide vehicle (23) and a detection unit two (32) set on the upper part of the guide vehicle (23) with the detection end facing upward. The controller (4) is electrically connected to the docking detection module (3) and the lifting device and is used to send detection information to at least the lifting device.

2. The substation main transformer accessory hoisting and docking system according to claim 1, characterized in that: The upper part of the guide vehicle (23) is fixed with an elastic pad (231) and a baffle (232), and the baffle (232) is located on the side of the guide vehicle (23) close to the main transformer (1) body; The docking detection module (3) also includes a detection unit three (33) disposed on the baffle (232), and the detection end of the detection unit three (33) faces the side of the baffle (232) away from the main transformer (1) body; The first detection unit (31) and the third detection unit (33) include a distance sensor, and the second detection unit (32) includes a pressure sensor.

3. The substation main transformer accessory hoisting and docking system according to claim 1, characterized in that: The lower track (21) includes multiple unit tracks (211), which are laterally distributed and the ends of two adjacent unit tracks (211) are close to each other. Each unit track (211) is detachably connected to multiple connectors (22) along its length.

4. The substation main transformer accessory hoisting and docking system according to claim 3, characterized in that: The distance sensor of the detection unit (31) is embedded in the guide vehicle (23) and the distance sensor is electrically connected to the controller (4). The controller (4) is configured to adjust the moving speed of the lifting device based on the distance data fed back by the distance sensor.

5. The substation main transformer accessory hoisting and docking system according to claim 4, characterized in that: The guide vehicle (23) includes two unit bodies (233), and an adjusting rod (234) is provided between the two unit bodies (233). The adjusting rod (234) has multiple bolt holes along its length, and the opposite side walls of the unit bodies (233) have mounting holes for inserting the adjusting rod (234).

6. The substation main transformer accessory hoisting and docking system according to claim 3, characterized in that: The connector 1 (22) includes a clamp 1 (221) and an L plate (222). The clamp 1 (221) is fitted onto the pre-installed fixing frame (11) of the heat dissipation unit (5). One end of the L plate (222) is fixed upward to the bottom of the clamp 1 (221), and the other end is fixed horizontally to the side of the lower track (21). The guiding device (2) further includes: The upper track (24) is located above the pre-installed mounting bracket (11) of the heat dissipation unit (5); Connector 2 (25) is detachably connected to the upper rail (24) and the pre-installed mounting bracket (11) of the heat dissipation unit (5). A multi-functional fastener, one end of which is slidably connected to the upper rail (24), and the other end passes over the upper part of the heat dissipation device and points downward; The force-shaping hook (27) is connected to the downward end of the multi-functional fastener by a rope; The multifunctional fastener includes two unit fastener plates (26) arranged side by side, and the opposing sides of the two unit fastener plates (26) are symmetrically concave to form a notch for the lifting rope (61) of the lifting device to pass through; The lifting rope (61) of the lifting device is fixed with a limiting block (63), which is located below the notch of the unit buckle plate (26) and has a cross-sectional area larger than the notch. The unit rail (211) of the lower rail (21) is fixed to a locking post (212) on the side away from the main transformer (1) body. The force hook hooks onto the locking post (212), and the inner wall of the force hook is embedded with balls.

7. The substation main transformer accessory hoisting and docking system according to claim 6, characterized in that: A support (62) is installed on the lifting rope (61) of the lifting device, and a hydraulic cylinder (64) is installed on the support (62). The telescopic end of the hydraulic cylinder (64) faces downward and is fixed to the limiting block (63). The opposing sidewalls of the unit buckle plate (26) are symmetrically concave to form a notch for the telescopic end of the hydraulic cylinder (64) to pass through. The hydraulic cylinder (64) is electrically connected to the controller (4).

8. The substation main transformer accessory hoisting and docking system according to claim 6, characterized in that: The multifunctional fastener is slidably connected to one end of the upper rail (24) and a sliding member (28) is fixed thereon. The sliding member (28) includes a sliding block (282) and a vertical guide block (281). The sliding block (282) is slidably connected to the upper rail (24) and its bottom end is inwardly fastened to the upper rail (24). The vertical guide block (281) is fixed to the side of the sliding block (282) near the unit fastener plate (26). The end of the unit fastener plate (26) is slidably connected to the vertical guide block (281).

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