Dry-type step-down transformer installation equipment for test

Abstract

The utility model relates to the technical field of transformer installation, in particular to dry-type step-down transformer installation equipment for a test, which comprises a main body bracket, a main body support and a main body support, the lifting frame is arranged in the main body bracket in a lifting manner; the lifting mechanism is arranged on the main body bracket and is used for driving the lifting frame to move up and down; the pushing mechanism is arranged on the lifting frame and used for bearing the transformer parts and pushing the transformer parts outwards; the pushing mechanism comprises a driving assembly, a pushing assembly and a pushing assembly, and the driving assembly is fixedly installed on the lifting frame; the two part conveying assemblies are symmetrically arranged on the lifting frame and push parts out through the driving assemblies; the supporting plate is fixedly connected with the two part conveying assemblies and used for bearing the transformer parts; the workpiece conveying assembly comprises a supporting bottom plate fixedly connected with the lifting frame; the feeding bracket is fixedly mounted on the supporting bottom plate; the bearing plate is horizontally and slidably arranged on the conveying support and is controlled to slide through a driving assembly; and the connecting strip is fixedly connected with the bearing plate.

Description

Technical Field

[0001] This utility model relates to the technical field of transformer installation, and in particular to an installation device for a test dry-type step-down transformer. Background Technology

[0002] Dry-type step-down transformers are widely used in power systems, scientific research, and other fields. The accuracy and efficiency of their installation directly affect subsequent test results and equipment operational stability. Traditional dry-type step-down transformer testing and installation typically relies on a combination of manual handling and simple mechanical assistance. This method has several drawbacks: firstly, manual handling is not only labor-intensive and inefficient, but also makes it difficult to ensure the stability of transformer components during transport, easily leading to damage and affecting the transformer's performance and lifespan; secondly, simple mechanical assistance equipment lacks height adjustment and precise pushing functions, making it difficult to accurately install transformer components to designated positions, especially in space-constrained or high-precision testing scenarios, where traditional methods are insufficient. Furthermore, the existing installation equipment has an unreasonable structural design and poor coordination between components, failing to achieve efficient and stable installation operations, significantly hindering the testing and installation of dry-type step-down transformers. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a test dry-type step-down transformer installation device that improves installation efficiency and accuracy while reducing labor intensity and risk.

[0004] This utility model discloses an installation device for a test dry-type step-down transformer, comprising:

[0005] The main support frame is installed on the ground.

[0006] The lifting frame has its lifting mechanism housed within the main support structure.

[0007] The lifting mechanism, mounted on the main support frame, is used to drive the lifting frame to move up and down;

[0008] The pushing mechanism, mounted on the lifting frame, is used to carry transformer parts and push them outwards;

[0009] The push notification providers include:

[0010] The drive assembly is fixedly mounted on the lifting frame.

[0011] Two feeding assemblies are symmetrically arranged on the lifting frame, and the parts are pushed out by the drive assembly;

[0012] The pallet, fixedly connected to two feeding assemblies, is used to carry transformer parts;

[0013] The delivery components include:

[0014] The supporting base plate is fixedly connected to the lifting frame.

[0015] The delivery bracket is fixedly installed on the support base plate;

[0016] The load-bearing plate is horizontally slidably mounted on the delivery bracket, and its sliding is controlled by a drive assembly.

[0017] The connecting strip is fixedly connected to the load-bearing plate, and the top of the connecting strip is fixedly connected to the support plate.

[0018] As a preferred embodiment of this utility model, the delivery assembly further includes:

[0019] Multiple guide wheels: Two rows of guide wheels are symmetrically arranged on both sides of the feeding bracket, with multiple guide wheels on each side;

[0020] Two guide rails are symmetrically arranged at the top of the load-bearing plate, and the two guide rails slide and cooperate with the guide wheels on both sides respectively.

[0021] As a preferred embodiment of this utility model, a protective rubber pad is provided at the top of the tray.

[0022] As a preferred embodiment of this utility model, the driving component includes:

[0023] The delivery transmission box is fixedly installed on the lifting frame, and the delivery transmission box is powered by a motor.

[0024] The delivery drive rod is rotatably mounted on the lifting frame and is driven to rotate by the delivery transmission box.

[0025] Two first transmission boxes are fixedly connected to the support base plates of two feeding assemblies, respectively;

[0026] Two gears, each driven to rotate via two first transmission boxes;

[0027] Two racks are fixedly installed at the bottom of the load-bearing plates of the two feeding assemblies, and the racks mesh with the gears.

[0028] As a preferred embodiment of this utility model, the lifting mechanism includes:

[0029] The lifting transmission box is located at the top of the main support frame and is powered by a motor.

[0030] The lifting drive rod is rotatably mounted on the top of the main support frame and is driven to rotate by the lifting transmission box.

[0031] Two second transmission boxes are symmetrically fixedly installed on the top of the main support frame and are powered by a lifting drive rod.

[0032] Two screws are vertically mounted on the main support and are threaded into the lifting frame. The screws are driven to rotate through the second transmission box.

[0033] As a preferred embodiment of this utility model, four vertical guide rails are vertically arranged on the main support, and four guide sliders are arranged at the four corners of the lifting frame, with the four guide sliders slidingly engaging with the four vertical guide rails respectively.

[0034] As a preferred embodiment of this utility model, four travel brackets are provided at the four corners of the bottom of the main support, and a limiting post is provided on each group of travel brackets. The limiting post is used to limit the descent travel of the lifting frame.

[0035] As a preferred embodiment of this utility model, four anti-slip pads are provided at the four corners of the bottom of the main support.

[0036] Compared with existing technologies, the advantages of this utility model are as follows: the equipment achieves rapid and accurate installation of transformer parts through an automated pushing mechanism, greatly improving installation efficiency; the coordinated work of the lifting and pushing mechanisms allows the equipment to flexibly adjust its height and pushing distance to adapt to the needs of different installation scenarios, improving installation accuracy; automated operation reduces the labor intensity of manual handling and lowers the risk of damage to parts due to improper manual operation; the height adjustment function of the equipment enables it to accurately and stably install transformer parts to the designated position even in test scenarios with limited space or high installation accuracy requirements; the smooth installation process reduces damage to parts from impacts, helping to maintain the performance and service life of the transformer; in summary, this test dry-type step-down transformer installation equipment, through its unique working process, effectively solves many drawbacks of traditional installation methods, improves installation efficiency and accuracy, reduces labor intensity and risk, adapts to the needs of complex installation scenarios, and promotes the smooth progress of test installation work. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of this utility model;

[0038] Figure 2 This is a schematic diagram of the installation structure of the drive components of the push mechanism;

[0039] Figure 3 This is a schematic diagram of the connection structure of the delivery assembly;

[0040] Figure 4 yes Figure 1 Enlarged structural diagram of section A in the middle;

[0041] The attached diagram shows the following components: 1. Main support frame; 11. Lifting frame; 12. Anti-slip pad; 21. Feeding transmission box; 22. Feeding drive rod; 23. First transmission box; 24. Gear; 25. Rack; 26. Pallet; 201. Support base plate; 202. Feeding bracket; 203. Guide wheel; 204. Guide strip; 205. Load-bearing plate; 206. Connecting strip; 31. Lifting transmission box; 32. Lifting drive rod; 33. Second transmission box; 34. Screw; 35. Vertical guide rail; 36. Guide slider; 37. Stroke bracket; 38. Limiting post. Detailed Implementation

[0042] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0043] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0044] Reference Figures 1-4 This embodiment provides a test dry-type step-down transformer installation device, including:

[0045] Main support frame 1 is mounted on the ground;

[0046] The lifting frame 11 is located in the main support 1.

[0047] The lifting mechanism is mounted on the main support 1 and is used to drive the lifting frame 11 to move up and down.

[0048] The pushing mechanism, mounted on the lifting frame 11, is used to carry transformer parts and push them outward.

[0049] The push notification providers include:

[0050] The drive assembly is fixedly mounted on the lifting frame 11.

[0051] Two feeding assemblies are symmetrically arranged on the lifting frame 11, and the parts are pushed out by the drive assembly;

[0052] The pallet 26 is fixedly connected to two feeding assemblies and is used to carry transformer parts;

[0053] The delivery components include:

[0054] The base plate 201 is fixedly connected to the lifting frame 11;

[0055] The delivery bracket 202 is fixedly installed on the support base plate 201;

[0056] The load-bearing plate 205 is horizontally slidably mounted on the delivery bracket 202, and its sliding is controlled by the drive assembly.

[0057] The connecting strip 206 is fixedly connected to the load-bearing plate 205, and the top end of the connecting strip 206 is fixedly connected to the support plate 26.

[0058] In this embodiment, the pushing mechanism is mounted on the lifting frame 11. Its core function is to carry transformer parts and accurately and stably push them to the designated position. The pushing mechanism consists of a drive assembly and two symmetrically arranged feeding assemblies. The drive assembly is fixedly mounted on the lifting frame 11 and provides power to the feeding assemblies. In the feeding assemblies, the support base plate 201 is fixedly connected to the lifting frame 11, and the feeding bracket 202 is fixedly mounted on the support base plate 201 to form a stable support structure. The load-bearing plate 205 is horizontally slidably mounted on the feeding bracket 202, and the sliding is achieved by the control of the drive assembly. The connecting strip 206 fixes the load-bearing plate 205 to the pallet 26, so that the pallet 26 can move with the sliding of the load-bearing plate 205. When the drive assembly is started, it drives the load-bearing plate 205 to slide horizontally on the feeding bracket 202, and then pushes the pallet 26 outward through the connecting strip 206, accurately pushing the transformer parts to the designated position. The equipment uses an automated pushing machine. This innovative design enables rapid and accurate installation of transformer components, significantly improving installation efficiency. The coordinated operation of the lifting and pushing mechanisms allows for flexible adjustment of height and pushing distance, adapting to different installation scenarios and enhancing installation precision. Automated operation reduces the labor intensity of manual handling and lowers the risk of component damage due to improper manual operation. The height adjustment function allows for accurate and stable installation of transformer components to designated positions even in space-constrained or high-precision testing environments. The smooth installation process reduces component damage from impacts, helping to maintain transformer performance and service life. In summary, this experimental dry-type step-down transformer installation equipment, through its unique working process, effectively solves many drawbacks of traditional installation methods, improves installation efficiency and precision, reduces labor intensity and risk, adapts to complex installation scenarios, and facilitates the smooth progress of experimental installation work.

[0059] As a preferred embodiment of the above technical solution, such as Figure 3 As shown, the delivery assembly also includes:

[0060] Multiple guide wheels 203 are provided on the two side walls of the feeding bracket 202, with two rows of guide wheels 203 symmetrically arranged and rotating, and multiple guide wheels 203 on each side;

[0061] Two guide rails 204 are symmetrically arranged at the top of the load-bearing plate 205. The two guide rails 204 are respectively slidably engaged with the guide wheels 203 on both sides.

[0062] In this embodiment, since two guide strips 204 are symmetrically arranged at the top of the load-bearing plate 205, and two rows of guide wheels 203 are symmetrically and rotatably arranged on both sides of the delivery bracket 202, with multiple guide wheels 203 on each side, when the load-bearing plate 205 slides, the guide strips 204 will slide along the surface of the guide wheels 203; the guide wheels 203 can rotate, which can reduce the friction between the guide strips 204 and the delivery bracket 202, making the sliding of the load-bearing plate 205 smoother; the load-bearing plate 205 is fixedly connected to the support plate 26 through the connecting strip 206, so the sliding of the load-bearing plate 205 will drive the support plate 26 to move together, thereby pushing the transformer parts placed on the support plate 26 outward; the guide wheels 203 convert the sliding friction between the guide strips 204 and the delivery bracket 202 into rolling friction, greatly reducing the friction. The reduced friction makes it easier for the drive assembly to push the load-bearing plate 205, reducing energy consumption and improving equipment operating efficiency. Multiple guide wheels 203 are symmetrically arranged on both sides of the delivery bracket 202, and two guide strips 204 are symmetrically arranged on the top of the load-bearing plate 205. This symmetrical structure ensures the stability of the load-bearing plate 205 during sliding, effectively preventing swaying or displacement of the load-bearing plate 205 during sliding, thus ensuring the stability of transformer parts during the pushing process and reducing the risk of damage from impacts. Reduced friction and improved sliding stability reduce wear on various equipment components, extending the equipment's service life. Simultaneously, it reduces the probability of malfunctions caused by component wear or unstable sliding, enhancing the reliability and stability of the equipment.

[0063] Specifically, such as Figure 1 As shown, a protective rubber pad is provided at the top of the tray 26;

[0064] In this embodiment, a certain degree of vibration and impact will inevitably occur during the handling, pushing, and installation of transformer parts. The protective rubber pad has good elasticity, and when the parts are placed on the pallet 26 or the pallet 26 moves, the rubber pad can absorb and disperse this vibration and impact energy, playing a role in buffering and shock absorption. Compared with a pallet without a protective rubber pad, it can effectively reduce the hard collision between the parts and the pallet, thereby reducing the possibility of damage to the parts and ensuring the performance and service life of the transformer. The surface of the rubber pad usually has a certain roughness, which increases the friction between the top of the pallet 26 and the transformer parts. During the pushing process, the friction can prevent the parts from sliding or displacing on the pallet 26, ensuring that the parts can move stably with the pallet 26 and accurately reach the designated installation position. The surface of transformer parts often has specific process requirements, and even slight scratches may affect their appearance quality and may even have a potential impact on the internal structure and performance. The protective rubber pad is soft and will not scratch the surface of the parts when in contact with them, thus protecting the integrity of the surface of the parts and meeting the surface quality requirements of the parts.

[0065] Furthermore, such as Figures 2 to 3 As shown, the driving component includes:

[0066] The delivery transmission box 21 is fixedly installed on the lifting frame 11, and the delivery transmission box 21 is powered by a motor.

[0067] The delivery drive rod 22 is rotatably mounted on the lifting frame 11 and is driven to rotate by the delivery transmission box 21.

[0068] Two first transmission boxes 23 are fixedly connected to the support base plates 201 of the two feeding assemblies, respectively;

[0069] Two gears 24 are driven to rotate by two first transmission boxes 23 respectively;

[0070] Two racks 25 are fixedly installed at the bottom of the load-bearing plates 205 of the two feeding assemblies, and the racks 25 mesh with the gears 24.

[0071] In this embodiment, when transformer parts need to be pushed, the motor starts and transmits power to the delivery transmission box 21. The power processed by the delivery transmission box 21 is transmitted to the delivery drive rod 22, which drives the delivery drive rod 22 to rotate on the lifting frame 11. The delivery drive rod 22 is connected to the two first transmission boxes 23, and the rotational power of the delivery drive rod 22 is transmitted to the two first transmission boxes 23. The two first transmission boxes 23 are respectively fixed on the support base plates 201 of the two delivery components, and they further transmit the input power to drive the two gears 24 connected to them to rotate. The two gears 24 respectively mesh with the two racks 25 fixedly installed at the bottom of the load-bearing plates 205 of the two delivery components. When the gears 24 rotate, due to the meshing action of the gears and racks, the racks 25 will move linearly along the rotation direction of the gears 24. Because the load-bearing plates 205 are fixedly connected to the racks 25, and the load-bearing plates 205 are horizontally slidably arranged on the delivery bracket 202, the racks 25... Linear motion causes the load-bearing plate 205 to slide horizontally on the delivery bracket 202. Since the pallet 26 is fixedly connected to the load-bearing plate 205 via the connecting strip 206, the sliding of the load-bearing plate 205 causes the pallet 26 to move synchronously, thus pushing the transformer parts carried on the pallet 26 outwards. The gear and rack transmission features accurate transmission ratio and smooth movement. Through the precise meshing of gear 24 and rack 25, the sliding distance and speed of the load-bearing plate 205 can be accurately controlled, thereby achieving precise pushing of the transformer parts and effectively improving installation accuracy and the reliability of test results. The use of two symmetrically arranged delivery components, with the two gears 24 driven by the same delivery drive rod 22 via two first transmission boxes 23, allows the two delivery components to move synchronously. This ensures that the pallet 26 maintains stable horizontal movement during the pushing process, avoiding problems such as part tilting and shaking caused by asynchronous pushing on both sides, further improving the stability and accuracy of the installation.

[0072] More specifically, such as Figure 1 As shown, the lifting mechanism includes:

[0073] The lifting transmission box 31 is located at the top of the main support 1 and is powered by a motor.

[0074] The lifting drive rod 32 is rotatably mounted on the top of the main support 1 and is driven to rotate by the lifting transmission box 31.

[0075] Two second transmission boxes 33 are symmetrically fixedly installed on the top of the main support 1 and are powered by the lifting drive rod 32.

[0076] Two screws 34 are vertically and rotatably mounted on the main support 1. Both screws 34 are threadedly engaged with the lifting frame 11. The screws 34 are driven to rotate through the second transmission box 33.

[0077] In this embodiment, the motor is started, and the motor transmits power to the lifting transmission box 31; the lifting transmission box 31 processes the power input from the motor accordingly; the power processed by the lifting transmission box 31 is transmitted to the lifting drive rod 32, causing the lifting drive rod 32 to rotate at the top of the main support 1; the lifting drive rod 32 is connected to two second transmission boxes 33, and the rotational power of the lifting drive rod 32 is transmitted to the two second transmission boxes 33; the two second transmission boxes 33 are symmetrically fixedly installed at the top of the main support 1, and they further transmit the input power, respectively driving the two screws 34 connected to them to rotate vertically on the main support 1; both screws 34 are threadedly engaged with the lifting frame 11; when the screws 34 rotate, due to the self-locking and transmission characteristics of the threads, the lifting frame 11 will rotate along... The screw 34 generates linear motion along its axis. By controlling the forward and reverse rotation of the motor and the number of rotations, the lifting height and speed of the lifting frame 11 can be precisely controlled to meet different installation height requirements. The threaded engagement between the screw and the lifting frame 11 is a high-precision transmission method. By precisely controlling the rotation of the motor, the number of rotations and angle of the screw 34 can be accurately adjusted, thereby achieving precise control of the height of the lifting frame 11. This effectively improves installation accuracy and ensures the accuracy of subsequent test results and the stability of equipment operation. The screw drive has self-locking properties. When the motor stops rotating, the threaded engagement between the screw 34 and the lifting frame 11 prevents the lifting frame 11 from accidentally sliding down due to its own weight or other external forces, ensuring the stability and safety of the equipment during installation.

[0078] Furthermore, such as Figure 1 As shown, four vertical guide rails 35 are vertically arranged on the main support 1, and four guide sliders 36 are arranged on the four corners of the lifting frame 11. The four guide sliders 36 are respectively slidably engaged with the four vertical guide rails 35.

[0079] In this embodiment, four guide sliders 36 are respectively embedded in four vertically arranged vertical guide rails 35 on the main support 1. As the lifting frame 11 rises or falls, the guide sliders 36 slide linearly along the extension direction of the vertical guide rails 35. The vertical guide rails 35 provide a fixed path and constraint for the movement of the guide sliders 36, ensuring that the guide sliders 36 can only move in the vertical direction. During the lifting process of the lifting frame 11, due to the close cooperation between the guide sliders 36 and the vertical guide rails 35, the vertical guide rails 35 restrict the horizontal displacement and swaying of the lifting frame 11 in the front-back, left-right and upward directions. The lifting frame 11 can only rise or fall smoothly along the vertical direction specified by the vertical guide rail 35. During the installation of dry-type step-down transformer parts, the lifting frame 11 needs to bear heavy parts, and the lifting action needs to be kept smooth to ensure installation accuracy and equipment safety. The cooperation between the vertical guide rail 35 and the guide slider 36 provides a reliable guiding effect for the lifting frame 11, which can effectively prevent the lifting frame 11 from tilting, swaying or deviating during the lifting process, so that the lifting frame 11 always maintains stable vertical movement, thereby improving the stability of the entire installation equipment during the lifting process.

[0080] Furthermore, such as Figure 1 and Figure 4 As shown, four travel brackets 37 are provided at the four corners of the bottom of the main support 1. Each travel bracket 37 is provided with a limiting post 38, which is used to limit the descent travel of the lifting frame 11.

[0081] In this embodiment, when the lifting frame 11 descends to contact the limiting post 38, the limiting post 38 will prevent the lifting frame 11 from moving further downward. At this time, even if the motor is still running and attempts to drive the screw 34 to continue rotating and lower the lifting frame 11, the lifting frame 11 cannot descend further due to the obstruction of the limiting post 38, thus limiting the descent stroke of the lifting frame 11. During the installation of the dry-type step-down transformer, the lifting frame 11 carries transformer parts and related equipment. If the descent stroke of the lifting frame 11 is not restricted, it may descend excessively, causing a violent collision with the bottom of the main support 1 or other components, resulting in equipment damage, and may even cause damage to transformer parts. The lifting frame 11 could fall and endanger the personal safety of on-site personnel. The limit post 38 can effectively prevent this from happening. By limiting the descent stroke of the lifting frame 11, it prevents it from falling excessively, thus ensuring the safety of the entire installation equipment and operators. Excessive descent can not only damage the lifting frame 11 itself, but may also damage the pushing mechanism installed on the lifting frame 11, transformer parts, and other components on the main support 1. This can lead to damage to transformer parts, affecting the performance and service life of the transformer. By limiting the descent stroke, the limit post 38 prevents these components from being subjected to unnecessary impact and damage due to excessive descent, reducing the maintenance cost of the equipment and the frequency of component replacement.

[0082] Furthermore, such as Figure 1 As shown, four anti-slip feet 12 are provided at the four corners of the bottom of the main support 1;

[0083] In this embodiment, the four anti-slip feet 12 increase the friction between the equipment and the ground, effectively preventing the equipment from sliding on the ground and ensuring that the equipment remains in a stable position during installation. This ensures that the transformer parts can be accurately installed in the designated positions, improving installation accuracy. During equipment operation, actions such as the lifting of the lifting frame 11 and the pushing of the pushing mechanism will generate vibration and impact. The anti-slip feet 12, through their own elasticity and close contact with the ground, can absorb and buffer some of the vibration energy, reduce the swaying amplitude of the equipment, make the equipment run more smoothly, and improve the stability and reliability of the equipment operation. If the equipment is in direct contact with the ground, its bottom is prone to collision and friction with the ground when moved or subjected to external impact, leading to wear, scratches, or even damage to the bottom of the equipment. The anti-slip pad 12, as a buffer layer between the equipment and the ground, can effectively reduce the damage to the bottom of the equipment caused by such collisions and friction, and extend the service life of the equipment. In some places where the ground needs protection, such as laboratories and workshops, placing the equipment directly on the ground may cause scratches, indentations, and other damage to the ground. The anti-slip pad 12 can disperse the pressure of the equipment on the ground, reduce the damage caused by excessive local pressure, and protect the integrity and aesthetics of the ground.

[0084] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A test dry-type step-down transformer installation apparatus, characterized by, The utility model relates to a kind of transformer parts pushing device, including: Main support, support is arranged on ground; Lifting frame, lifting is arranged in the main support; Lifting mechanism, it is arranged on the main support, for driving the lifting frame up and down movement; Push mechanism, it is arranged on the lifting frame, for carrying transformer parts, and push outward; Wherein, the push mechanism includes: Drive assembly, the drive assembly is fixedly installed on the lifting frame; Two piece feeding assemblies, symmetrically arranged on the lifting frame, push out parts by drive assembly; Supporting plate, fixedly connected with the lifting frame, for carrying transformer parts; The piece feeding assembly includes: Supporting bottom plate, fixedly connected with the lifting frame; Piece feeding support, fixedly installed on the supporting bottom plate; Bearing plate, horizontally slidingly arranged on the piece feeding support, sliding is controlled by the drive assembly; Connecting strip, fixedly connected with the bearing plate, the top end of the connecting strip is fixedly connected with the supporting plate.

2. A test dry-type step-down transformer mounting apparatus as claimed in claim 1, characterized in that, The piece feeding assembly further includes: Multiple guide wheels, two rows of guide wheels are symmetrically rotatably arranged on the side walls of the piece feeding support, multiple guide wheels are arranged on each side; Two guide sliding strips, two guide sliding strips are symmetrically arranged at the top end of the bearing plate, and the two guide sliding strips are respectively in sliding engagement with the guide wheels on the two sides.

3. A test dry-type step-down transformer mounting apparatus as claimed in claim 1, wherein The top end of the supporting plate is provided with a protective rubber pad.

4. A test dry-type step-down transformer mounting apparatus as set forth in claim 1, wherein The drive assembly includes: Piece feeding transmission box, fixedly installed on the lifting frame, the piece feeding transmission box is powered by motor; Piece feeding drive rod, rotatably arranged on the lifting frame, driven to rotate by the piece feeding transmission box; Two first transmission boxes, two first transmission boxes are respectively fixedly connected with the supporting bottom plates of two piece feeding assemblies; Two gears, two gears are respectively driven to rotate by two first transmission boxes; Two racks, two racks are respectively fixedly installed at the bottom end of the bearing plate of two piece feeding assemblies, and the racks are in engagement with the gears.

5. A test dry-type step-down transformer mounting apparatus as set forth in claim 1, wherein The lifting mechanism includes: Lifting transmission box, arranged at the top end of the main support, powered by motor; Lifting drive rod, rotatably arranged at the top end of the main support, driven to rotate by the lifting transmission box; Two second transmission boxes, two second transmission boxes are symmetrically fixedly installed at the top end of the main support, powered by the lifting drive rod; Two screw rods, two screw rods are both vertically rotatably installed on the main support, and the two screw rods are both in threaded engagement with the lifting frame, and the screw rods are driven to rotate by the second transmission boxes.

6. A test dry-type step-down transformer mounting apparatus as claimed in claim 5, wherein Four vertical guide rails are vertically arranged on the main support, and four guide sliding blocks are arranged on the four corners of the lifting frame, and the four guide sliding blocks are respectively in sliding engagement with the four vertical guide rails.

7. A test dry-type step-down transformer mounting apparatus as claimed in claim 5, wherein Four travel supports are arranged on the four corners of the bottom of the main support, one limiting column is arranged on each set of travel supports, and the limiting column is used to limit the lowering stroke of the lifting frame.

8. A test dry-type step-down transformer mounting apparatus as set forth in claim 1, wherein Four anti-skid feet are arranged on the four corners of the bottom end of the main support.

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