Auxiliary wheel push-pull device and method special for heavy transformer

Abstract

The invention discloses an auxiliary wheel push-and-pull device and method special for a heavy-duty transformer, and belongs to the technical field of heavy-duty transformers. The auxiliary wheel push-and-pull device comprises two supporting shafts, bearings are installed at the two ends of each supporting shaft; the four supporting and positioning blocks are installed at the bottom of the heavy-duty transformer, first jackscrew inner threaded holes in the vertical direction are formed in the supporting and positioning blocks, supporting jackscrews are connected to the first jackscrew inner threaded holes, and the length of the supporting jackscrews is larger than the height of the supporting and positioning blocks; the limiting block is installed on the side wall of the supporting and positioning block and comprises a first limiting part used for installing a supporting shaft and a second limiting part used for installing an inclined strut jackscrew; an inclined groove is formed in the side wall of the first limiting part, the two ends of the supporting shaft are in lap joint in the inclined groove, a second jackscrew inner threaded hole perpendicular to the supporting shaft is formed in the second limiting part, and an outer thread matched with the second jackscrew inner threaded hole is arranged on the inclined supporting jackscrew. By the adoption of the technical scheme, the heavy transformer can be conveniently carried.

Description

Technical Field

[0001] This invention belongs to the field of heavy-duty transformer technology, specifically relating to a push-pull device and method for a special auxiliary wheel of a heavy-duty transformer. Background Technology

[0002] As is well known, a transformer is an electrical device that operates based on the principle of electromagnetic induction, and its main function is to transform alternating current (AC) voltage. Structurally, a transformer mainly consists of three parts: the primary winding, the secondary winding, and the iron core (or magnetic core) used to enhance the magnetic circuit. In practical applications, transformers play multiple important roles in various electrical devices and wireless circuits, including but not limited to realizing voltage step-up and step-down, impedance matching, and providing safety isolation. Especially in power systems, transformers are indispensable key equipment, undertaking the important tasks of power transmission and distribution.

[0003] In recent years, with the continuous advancement and deepening of industrialization, the demand for heavy-duty transformers has been increasing in specific industrial sectors such as power, metallurgy, and chemicals. These heavy-duty transformers have significant characteristics compared to traditional transformers: firstly, they are enormous in size, and secondly, they are incredibly heavy. Their weight ranges widely, from several tons to tens of tons. Therefore, conventional manual handling methods are simply insufficient for transporting or moving these heavy transformers; large lifting equipment is essential. However, in actual operation, special conditions are often encountered, such as working inside mine tunnels or installing equipment in compact factory areas. Due to limited working space or height restrictions, conventional large lifting equipment cannot enter or operate. In such cases, specially designed auxiliary handling devices are required. Summary of the Invention

[0004] The purpose of this invention is to provide a push-pull device and method for auxiliary wheels for heavy transformers, which facilitates the handling of heavy transformers.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A push-pull device for auxiliary wheels of heavy-duty transformers, comprising:

[0007] Two support shafts, each with bearings installed at both ends;

[0008] Four support positioning blocks are installed at the bottom of the heavy transformer. A first threaded hole for a vertical set screw is opened on the support positioning block. A support set screw is connected to the first threaded hole for a vertical set screw. The length of the support set screw is greater than the height of the support positioning block.

[0009] A limiting block installed on the side wall of the supporting positioning block, wherein:

[0010] The limiting block includes a first limiting part for installing a support shaft and a second limiting part for installing a diagonal brace set screw; an inclined groove is provided on the side wall of the first limiting part, and the two ends of the support shaft overlap in the inclined groove; the second limiting part is provided with a second set screw internal thread hole perpendicular to the support shaft; and the diagonal brace set screw is provided with an external thread that mates with the second set screw internal thread hole.

[0011] Preferably, the inclined support screw has a connector for connecting to the handle rod.

[0012] Preferably, the inclined groove is a U-shaped groove.

[0013] Preferably, the height of the lower edge of the U-shaped groove opening is greater than the height of the groove bottom.

[0014] Preferably, the first limiting part and the second limiting part are welded together.

[0015] Preferably, the angle between the second set screw internal thread hole and the horizontal plane is in the range of 30 degrees to 60 degrees.

[0016] Preferably, the angle between the second set screw internal thread hole and the horizontal plane is 30 degrees, 40 degrees, 50 degrees, or 60 degrees.

[0017] The second objective of this invention is to provide a method for pushing and pulling an auxiliary wheel specifically for heavy-duty transformers, comprising:

[0018] S1. Preparations before pushing and pulling: Adjust the support screw and the diagonal brace screw so that the bearing contacts the ground and the lower end of the support positioning block leaves the ground.

[0019] S2. Push and pull the heavy transformer to the destination;

[0020] S3. After pushing and pulling, the reset operation is carried out by adjusting the support screw and the diagonal brace screw so that the bearing leaves the ground and the lower end of the support positioning block contacts the ground.

[0021] Preferably, S1 includes alternately performing the following two steps:

[0022] By rotating the support screw, the lower end of the support positioning block gradually lifts off the ground;

[0023] By rotating the inclined support screw, the bearing gradually makes contact with the ground.

[0024] Preferably, S3 includes alternately performing the following two steps:

[0025] By rotating the support screw, the lower end of the support positioning block gradually contacts the ground;

[0026] By rotating the inclined support screw, the bearing is gradually lifted off the ground.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] By adopting the above technical solution, this invention can effectively realize the convenient handling of heavy transformers, significantly improve work efficiency, and reduce manual labor intensity. Specifically:

[0029] This invention features bearings installed at both ends of the support shaft. This design fully utilizes the low-friction rotational characteristics of the bearings during practical use, converting sliding friction into rolling friction, significantly reducing the frictional resistance between the equipment and the ground. This makes moving and transporting heavy transformers much easier and more convenient. Simultaneously, the symmetrical arrangement of the bearings ensures uniform force distribution, further enhancing the stability of the handling process.

[0030] This invention also includes a support system consisting of a support positioning block and adjustable support screws. The precision-threaded support screws allow for millimeter-level accurate adjustment. Operators can smoothly control the gap between the heavy transformer and the ground by simply rotating the support screws, enabling the equipment to be slowly raised or lowered. This gradual adjustment method not only ensures the smooth and controllable lifting and lowering of the equipment but also effectively avoids impact damage caused by sudden forces, greatly improving the safety and reliability of handling operations. Attached Figure Description

[0031] Figure 1 A structural diagram provided for a preferred embodiment of the present invention;

[0032] Figure 2 A front view provided for a preferred embodiment of the present invention;

[0033] Figure 3 A top view provided for a preferred embodiment of the present invention;

[0034] Figure 4 A right view provided for a preferred embodiment of the present invention;

[0035] Figure 5 This is a structural diagram of a limiting block provided in a preferred embodiment of the present invention.

[0036] Among them: 1. Bearing; 2. Support shaft; 3. Support positioning block; 4. Support set screw; 5. Limiting block; 5-1. First limiting part; 5-2. Second limiting part; 6. Diagonal brace set screw. Detailed Implementation

[0037] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0038] Example 1:

[0039] Please see Figures 1 to 5 As shown, a push-pull device for auxiliary wheels of heavy-duty transformers mainly includes:

[0040] Two support shafts 2, each with a bearing 1 installed at both ends;

[0041] In this embodiment, two parallel support shafts 2 are provided, maintaining a strict parallel relationship during installation. Bearing assemblies 1 are installed at both ends of each support shaft 2. These bearings 1 are made of high-quality metal materials to ensure their load-bearing capacity and rotational performance. During the actual handling of heavy transformers, due to the significant weight of the transformer, the bearings 1 at both ends of the support shafts 2 will directly contact the ground and bear the main load. The smooth rolling action of the bearings 1 effectively reduces ground friction resistance, thereby easily achieving the smooth movement of the heavy transformer. This greatly improves handling efficiency.

[0042] Four support positioning blocks 3 are installed at the bottom of the heavy transformer. A first threaded hole for a vertical set screw is opened on the support positioning block 3. A support set screw 4 is connected to the first threaded hole for a vertical set screw. The length of the support set screw 4 is greater than the height of the support positioning block 3.

[0043] In this embodiment, for clarity, the two support shafts are named Support Shaft No. 1 and Support Shaft No. 2, respectively. The four support positioning blocks 3 are divided into two groups, one group cooperates with Support Shaft No. 1, and the other group cooperates with Support Shaft No. 2. The minimum distance between the two support positioning blocks in the one group is greater than the length of Support Shaft No. 1, and the minimum distance between the two support positioning blocks in the other group is greater than the length of Support Shaft No. 2.

[0044] The limiting blocks 5 are installed on the side wall of the support positioning block 3. There are four limiting blocks 5, that is, each limiting block corresponds to one support positioning block; the limiting blocks can be welded to the side wall of the support positioning block.

[0045] Please see Figure 5The limiting block 5 includes a first limiting part 5-1 for installing the support shaft 2 and a second limiting part 5-2 for installing the inclined support screw 6; an inclined groove is provided on the side wall of the first limiting part 5-1, and the two ends of the support shaft 2 overlap in the inclined groove; the second limiting part 5-2 is provided with a second screw internal thread hole perpendicular to the support shaft 2; and the inclined support screw 6 is provided with an external thread that mates with the second screw internal thread hole.

[0046] The inclined support screw 6 is provided with an interface for connecting to the handle rod. The function of the handle rod is to facilitate operation, that is, the operator can use the handle rod to control the inclined support screw 6 while standing upright. The handle rod can be made of metal.

[0047] The inclined groove is a U-shaped groove, and the second limiting part 5-2 is located outside the opening of the U-shaped groove.

[0048] The height of the lower edge of the U-shaped groove opening is greater than the height of the groove bottom. That is, during the tightening of the inclined support screw 6, the support shaft 2 will be pressed downward, so that the bearing 1 will contact the ground.

[0049] The first limiting part 5-1 and the second limiting part 5-2 are welded together.

[0050] The angle between the second set screw internal thread hole and the horizontal plane ranges from 30 degrees to 60 degrees.

[0051] The angle between the second set screw internal thread hole and the horizontal plane is 30 degrees, 40 degrees, 50 degrees, or 60 degrees.

[0052] Example 2:

[0053] A method for pushing and pulling auxiliary wheels for heavy-duty transformers includes:

[0054] S1. Preparations before pushing and pulling: By adjusting the support screw 4 and the diagonal brace screw 6, the bearing 1 gradually contacts the ground and the lower end of the support positioning block 3 gradually leaves the ground.

[0055] S2. Push and pull the heavy transformer to the destination;

[0056] S3. After pushing and pulling, the reset operation is carried out by adjusting the support screw 4 and the diagonal brace screw 6 so that the bearing 1 leaves the ground and the lower end of the support positioning block 3 contacts the ground.

[0057] To better understand the specific working process of Embodiment 2, the following is a non-limiting description:

[0058] S1 includes alternately performing the following two steps:

[0059] By rotating the support screw 4, the lower end of the support positioning block 3 gradually leaves the ground;

[0060] By rotating the inclined support screw 6, the bearing 1 gradually comes into contact with the ground.

[0061] The present invention employs alternating rotating support screws 4 and inclined support screws 6, so that the lower end of the support positioning block 3 gradually leaves the ground and the bearing 1 gradually contacts the ground;

[0062] In the initial state of S1, the lower end of the support screw 4 is in contact with the ground, while the bearing 1 may or may not be in contact with the ground; that is, in the initial state, the weight of the heavy transformer is entirely borne by the support positioning block 3. The effect of this alternating operation is that the weight of the heavy transformer is gradually shifted from being borne by the support positioning block 3 to being borne by the bearing 1.

[0063] S3 includes alternately performing the following two steps:

[0064] By rotating the support screw 4, the lower end of the support positioning block 3 gradually contacts the ground;

[0065] By rotating the inclined support screw 6, the bearing 1 is gradually lifted off the ground.

[0066] In the initial state of S3, the lower end of bearing 1 is in contact with the ground, while the support positioning block 3 may or may not be in contact with the ground; that is, in the initial state, the weight of the heavy transformer is entirely borne by bearing 1. The effect of this alternating operation is that the weight of the heavy transformer is gradually shifted from bearing 1 to support positioning block 3.

[0067] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0068] Although embodiments of the 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A push-pull device for auxiliary wheels of heavy-duty transformers, characterized in that, include: Two support shafts (2), each with a bearing (1) installed at both ends; Four support positioning blocks (3) are installed at the bottom of the heavy transformer. A first set screw internal thread hole in the vertical direction is opened on the support positioning block (3). A support set screw (4) is connected at the first set screw internal thread hole. The length of the support set screw (4) is greater than the height of the support positioning block (3). The limiting block (5) installed on the side wall of the supporting positioning block (3) includes: The limiting block (5) includes a first limiting part (5-1) for installing the support shaft (2) and a second limiting part (5-2) for installing the inclined support screw (6); an inclined groove is provided on the side wall of the first limiting part (5-1), and the two ends of the support shaft (2) overlap in the inclined groove; a second set screw internal thread hole perpendicular to the support shaft (2) is provided on the second limiting part (5-2), and an external thread that mates with the second set screw internal thread hole is provided on the inclined support screw (6).

2. The heavy-duty transformer auxiliary wheel push-pull device according to claim 1, characterized in that: The inclined support screw (6) is provided with a plug interface for connecting to the handle rod.

3. The push-pull device for auxiliary wheels of heavy-duty transformers according to claim 1, characterized in that: The inclined groove is a U-shaped groove.

4. The heavy-duty transformer auxiliary wheel push-pull device according to claim 3, characterized in that: The height of the lower edge of the U-shaped groove opening is greater than the height of the groove bottom.

5. The heavy-duty transformer auxiliary wheel push-pull device according to claim 1, characterized in that: The first limiting part (5-1) and the second limiting part (5-2) are welded together.

6. The heavy-duty transformer auxiliary wheel push-pull device according to any one of claims 1-5, characterized in that, The angle between the second set screw internal thread hole and the horizontal plane ranges from 30 degrees to 60 degrees.

7. The heavy-duty transformer auxiliary wheel push-pull device according to claim 6, characterized in that: The angle between the second set screw internal thread hole and the horizontal plane is 30 degrees, 40 degrees, 50 degrees, or 60 degrees.

8. A method for pushing and pulling auxiliary wheels for heavy-duty transformers, characterized in that, include: S1. Preparations before pushing and pulling: By adjusting the support screw (4) and the inclined support screw (6), the bearing (1) is made to contact the ground and the lower end of the support positioning block (3) is lifted off the ground. S2. Push and pull the heavy transformer to the destination; S3. After pushing and pulling, the reset work is carried out by adjusting the support screw (4) and the diagonal brace screw (6) so that the bearing (1) leaves the ground and the lower end of the support positioning block (3) contacts the ground.

9. The method for pushing and pulling auxiliary wheels for heavy-duty transformers according to claim 8, characterized in that, S1 includes alternately performing the following two steps: By rotating the support screw (4), the lower end of the support positioning block (3) gradually leaves the ground; By rotating the inclined support screw (6), the bearing (1) gradually comes into contact with the ground.

10. The method for pushing and pulling auxiliary wheels for heavy-duty transformers according to claim 8, characterized in that, S3 includes alternately performing the following two steps: By rotating the support screw (4), the lower end of the support positioning block (3) gradually contacts the ground; By rotating the inclined support screw (6), the bearing (1) is gradually lifted off the ground.

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