Auxiliary hoisting device for high-voltage coil and low-voltage coil of dry-type transformer
By designing a lifting auxiliary device for the high and low voltage coils of the dry-type transformer, the pre-connection lifting of the high and low voltage coils is achieved by using a bracket and a gear set, which solves the problem of the existing technology that requires paying attention to multiple side collisions at the same time, and achieves the effect of easy lifting.
Patent Information
- Application Number
- CN202422745273.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-11
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-11-11
AI Technical Summary
When installing high-voltage coils and low-voltage coils in existing dry-type transformers, care must be taken during the hoisting process to avoid collisions between the two and with the iron core, making assembly more difficult.
A lifting auxiliary device for high- and low-voltage coils of dry-type transformers is designed, which includes four brackets and four connecting pieces. Sliding blocks and stops are provided on the brackets. The movement of the sliding blocks is realized by a gear set, ensuring that the high-voltage coil and the low-voltage coil can be lifted simultaneously after being installed. The coils are fixed by connecting pieces, simplifying the lifting process.
This ensures that only one side needs to be paid attention to during hoisting, which reduces the difficulty of assembly and improves the convenience and safety of hoisting.
Smart Images
Figure CN223357193U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of dry-type transformers, and more specifically to a hoisting auxiliary device for high- and low-voltage coils of dry-type transformers. Background Art
[0002] A dry-type transformer is a transformer whose core and winding are not immersed in insulating oil. It mainly consists of an iron core made of silicon steel sheets and high-voltage and low-voltage coils cast with epoxy resin.
[0003] When installing high voltage coils and low voltage coils, Figure 1 As shown, the iron core 90 and the bottom pad 91 are installed first. Then, since the low-voltage coil 92 has an outward-extending plug strip, the high-voltage coil 93 is first hoisted above the pad, and then the low-voltage coil 92 is hoisted to the inner side of the high-voltage coil 93. At the same time, the low-voltage coil 92 is located on the outside of the iron core 90. It is obvious that during the above hoisting process, when hoisting the low-voltage coil 92, attention must be paid to avoiding collision between the low-voltage coil 92 and the inner iron core 90, and part of the attention must be paid to avoiding collision between the low-voltage coil 92 and the high-voltage coil 93. Assembly is difficult.
[0004] Therefore, there is a need to provide a lifting auxiliary device for high and low voltage coils of a dry-type transformer that only requires attention to one side during lifting and is easy to lift. Summary of the Invention
[0005] The main purpose of the present application is to provide a hoisting auxiliary device for high and low voltage coils of a dry-type transformer, which is used for hoisting high-voltage coils and low-voltage coils at the same time, wherein the high-voltage coil is sleeved on the outside of the low-voltage coil, wherein the hoisting auxiliary device for high and low voltage coils of the dry-type transformer includes four brackets and four connecting pieces, the four brackets are arranged in a ring shape, and the top surface of each bracket is provided with a first stop block and two sliding blocks, the two sliding blocks are slidably arranged on the bracket, and the two sliding blocks move toward or away from each other, and when the sliding block slides a predetermined distance, one of the sliding blocks abuts against the outer wall of the low-voltage coil. The other sliding block abuts against the inner wall of the high-voltage coil, and the first stop block abuts against the outer wall of the high-voltage coil. In the circumferential direction of the high-voltage coil, a connecting piece is provided between each of the two adjacent brackets, and the two ends of the connecting piece are respectively connected to the corresponding brackets. The bottom support and position fixation of the high-voltage coil and the low-voltage coil are achieved through the brackets and the connecting piece. Subsequently, the high-voltage coil and the low-voltage coil are hoisted as a whole and installed on the bottom pad. Compared with the existing technology, it has the advantage of being easy to hoist because you only need to pay attention to the collision on one side during hoisting.
[0006] Another object of the present application is to provide a lifting auxiliary device for high and low voltage coils of a dry-type transformer, wherein the lifting auxiliary device for high and low voltage coils of a dry-type transformer also includes a plurality of vertically arranged gear sets, and each of the two sliding blocks on the bracket has a rack portion on the opposite side, and each of the brackets has a gear set rotatably mounted thereon, and the gear set is located between the two rack portions, and the gear set is simultaneously engaged with the two rack portions, and the rotation of the gear set enables the two sliding blocks to move toward or away from each other.
[0007] In order to achieve at least one of the above-mentioned invention objectives, the present application provides a hoisting auxiliary device for high- and low-voltage coils of a dry-type transformer, which is used to simultaneously hoist a high-voltage coil and a low-voltage coil, wherein the high-voltage coil is sleeved on the outside of the low-voltage coil, wherein the hoisting auxiliary device for high- and low-voltage coils of a dry-type transformer comprises:
[0008] Four brackets, the four brackets are arranged in a ring shape, the top surface of each bracket is provided with a first stopper and two sliding blocks, the two sliding blocks are slidably arranged on the bracket, and the two sliding blocks move toward or away from each other, when the sliding blocks slide a predetermined distance, one sliding block abuts against the outer side wall of the low-voltage coil, the other sliding block abuts against the inner side wall of the high-voltage coil, and the first stopper abuts against the outer side wall of the high-voltage coil; and
[0009] Four connecting pieces, in the circumferential direction of the high-voltage coil, one connecting piece is provided between two adjacent brackets, and both ends of the connecting piece are respectively connected to the corresponding brackets.
[0010] In one or more embodiments of the present application, the auxiliary lifting device for the high and low voltage coils of the dry-type transformer also includes a plurality of vertically arranged gear sets, and each of the two sliding blocks on the bracket has a rack portion on the opposite side, and each of the brackets has a gear set rotatably mounted thereon, and the gear set is located between the two rack portions, and the gear set is engaged with the two rack portions at the same time.
[0011] In one or more embodiments of the present application, each of the gear sets has a slot on the top.
[0012] In one or more embodiments of the present application, a second stopper is provided at one end of the two brackets facing away from the first stopper, and the second stopper abuts against the inner wall of the low-voltage coil.
[0013] In one or more embodiments of the present application, both ends of the connecting member are detachably connected to the corresponding brackets.
[0014] In one or more embodiments of the present application, the auxiliary lifting device for the high and low voltage coils of the dry-type transformer also includes two first auxiliary frames, and the bottoms of the two brackets provided with the second stop blocks each have a groove, and the middle section of each first auxiliary frame extends into the groove, and the two ends of each first auxiliary frame are bent at a predetermined angle and fixedly connected to the two connecting members respectively.
[0015] In one or more embodiments of the present application, the auxiliary lifting device for the high and low voltage coils of the dry-type transformer also includes two second auxiliary frames, and a notch groove is provided on both sides of the bottom of the other two brackets, one end of the second auxiliary frame is fixedly connected to the corresponding connecting member, and the other end of the second auxiliary frame extends into the notch groove.
[0016] In one or more embodiments of the present application, the groove width is greater than or equal to the sum of the maximum distance from the connecting member to the end of the bracket facing away from the second stopper and the width of the first auxiliary frame.
[0017] In an embodiment of the present application, a lifting auxiliary device for high and low voltage coils of a dry-type transformer is used to simultaneously lift high-voltage coils and low-voltage coils, including four brackets and four connecting pieces. The four brackets are arranged in a ring, and the top surface of each bracket is provided with a first stop block and two sliding blocks. The two sliding blocks are slidably set on the bracket. When the sliding block slides a predetermined distance, one sliding block abuts against the outer wall of the low-voltage coil, and the other sliding block abuts against the inner wall of the high-voltage coil, and the first stop abuts against the outer wall of the high-voltage coil. In the circumferential direction of the high-voltage coil, a connecting piece is provided between each adjacent bracket, and the two ends of the connecting piece are respectively connected to the corresponding brackets. The bottom support and position fixation of the high-voltage coil and the low-voltage coil are then achieved through the bracket and the connecting piece. The high-voltage coil and the low-voltage coil are then lifted as a whole and installed on the bottom pad. Compared with the existing technology, it has the advantage of only needing to pay attention to the collision on one side during lifting, and is easy to lift. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] These and / or other aspects and advantages of the present application will become more clear and easier to understand from the following detailed description of the embodiments of the present application in conjunction with the accompanying drawings, in which:
[0019] Figure 1 The figure shows a schematic diagram of the existing installation of high-voltage coils and low-voltage coils;
[0020] Figure 2 The figure shows a schematic structural diagram of a lifting auxiliary device for high and low voltage coils of a dry-type transformer according to the present invention;
[0021] Figure 3 Pictured Figure 2 A local enlarged view of point C;
[0022] Figure 4The figure shows a schematic diagram of a lifting auxiliary device for high and low voltage coils of a dry-type transformer, in which the high and low voltage coils are installed on the outside of the iron core;
[0023] Figure 5 The figure shows a structural schematic diagram of a bracket at a certain perspective. DETAILED DESCRIPTION
[0024] The terms and words used in the following description and claims are not limited to the literal meanings, but are merely used by the inventor to enable a clear and consistent understanding of the present application. Therefore, it will be apparent to those skilled in the art that the following description of various embodiments of the present application is provided for illustration purposes only and not for the purpose of limiting the present application as defined by the appended claims and their equivalents.
[0025] It is to be understood that the term "one" should be understood as "at least one" or "one or more", that is, in one embodiment, the number of an element may be one, while in another embodiment, the number of the elements may be multiple, and the term "one" should not be understood as a limitation on the quantity.
[0026] Although ordinal numbers such as "first," "second," and the like will be used to describe various components, these are not intended to limit those components. The terms are used solely to distinguish one component from another. For example, a first component could be referred to as a second component, and similarly, a second component could be referred to as a first component without departing from the teachings of the utility model. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.
[0027] The terms used herein are for the purpose of describing various embodiments only and are not intended to be limiting. As used herein, the singular is intended to include the plural, unless the context clearly indicates otherwise. It will also be understood that the terms "comprising" and / or "having" when used in this specification specify the presence of a stated feature, number, step, operation, component, element, or combination thereof, and do not preclude the presence or addition of one or more other features, numbers, steps, operations, components, elements, or groups thereof.
[0028] Schematic diagram of the auxiliary device for lifting high and low voltage coils of dry-type transformers, refer to Figures 2 to 5 According to a preferred embodiment of the present invention, a hoisting auxiliary device for high and low voltage coils 92 of a dry-type transformer is used to simultaneously hoist a high voltage coil 93 and a low voltage coil 92, wherein the high voltage coil 93 is sleeved on the outside of the low voltage coil 92.
[0029] Further, if Figure 2 As shown, the auxiliary device for hoisting the high and low voltage coils of the dry-type transformer includes four brackets 10 and four connecting pieces 20.
[0030] Specifically, if Figures 2 to 5 As shown, the four brackets 10 are arranged in a ring shape, and the top surface of each bracket 10 is provided with a first stop block 101 and two sliding blocks 102. The two sliding blocks 102 are both slidably set on the bracket 10, and the two sliding blocks 102 move toward or away from each other. When the sliding blocks 102 slide a predetermined distance, one sliding block 102 abuts against the outer wall of the low-voltage coil 92, and the other sliding block 102 abuts against the inner wall of the high-voltage coil 93, and the first stop block 101 abuts against the outer wall of the high-voltage coil 93.
[0031] In addition, in the circumferential direction of the high-voltage coil 93 , a connecting member 20 is provided between two adjacent brackets 10 , and both ends of the connecting member 20 are respectively connected to the corresponding brackets 10 .
[0032] It should be noted that before the high-voltage coil 93 and the low-voltage coil 92 are hoisted to the outside of the iron core 90 and positioned on the bottom pad 91, the high-voltage coil 93 and the low-voltage coil 92 are first hoisted to the hoisting auxiliary device of the high and low voltage coils of the dry-type transformer. After the high-voltage coil 93 and the low-voltage coil 92 are connected through the hoisting auxiliary device of the high and low voltage coils of the dry-type transformer, the high-voltage coil 93, the low-voltage coil 92 and the hoisting auxiliary device of the high and low voltage coils of the dry-type transformer are hoisted as a whole to the outside of the iron core 90 and positioned on the bottom pad 91. It is worth mentioning that in the above-mentioned hoisting process, the high-voltage coil 93 and the low-voltage coil 92 are first placed on the hoisting auxiliary device of the high and low voltage coils of the dry-type transformer. At this time, when hoisting the low-voltage coil 92, you only need to be careful not to let the low-voltage coil 92 collide with the high-voltage coil 93. Then, you only need to lift the hoisting auxiliary device of the high and low voltage coils of the dry-type transformer upwards. When the low-voltage coil 92 and the high-voltage coil 93 placed thereon are hoisted to the outside of the iron core 90 together, you only need to be careful not to let the low-voltage coil 92 collide with the iron core 90. The low-voltage coil 92 and the high-voltage coil 93 can be completely installed on the outside of the iron core 90 and placed on the bottom pad 91. It is obvious that compared with the prior art in which it is necessary to pay attention to both the low-voltage coil 92 and the high-voltage coil 93 and the iron core 90, the embodiment of the present application realizes the pre-connection of the high-voltage coil 93 and the low-voltage coil 92 by providing a lifting auxiliary device for the high and low-voltage coils of the dry-type transformer, so that during the entire lifting process, only one side of the low-voltage coil 92 needs to be paid attention to, which has the advantage of being easy to lift as only one side needs to be paid attention to.
[0033] Further, if Figures 3 to 5As shown, the auxiliary lifting device for the high and low voltage coils of the dry-type transformer also includes a plurality of vertically arranged gear sets 30. The two sliding blocks 102 on each of the brackets 10 have a rack portion 1021 on the opposite side. Each of the brackets 10 is rotatably mounted with a gear set 30, and the gear set 30 is located between the two rack portions 1021, and the gear set 30 is simultaneously engaged with the two rack portions 1021. Each of the gear sets 30 is composed of a plurality of gears and a rotating shaft, and the plurality of gears are sleeved on the rotating shaft.
[0034] It should be noted that when the gear set 30 rotates circumferentially, the two rack portions 1021 move toward or away from each other, and the two sliding blocks 102 move toward or away from each other, so that one sliding block 102 presses against the outer wall of the low-voltage coil 92, and the other sliding block 102 presses against the inner wall of the high-voltage coil 93.
[0035] Furthermore, in order to facilitate the rotation of the gear set 30, as shown in FIG. Figure 3 and Figure 5 As shown, each of the gear sets 30 has a slot 301 on the top. Specifically, the slot 301 is located on the rotating shaft.
[0036] It should be noted that, after the low-voltage coil 92 and the high-voltage coil 93 are both placed on the four brackets 10, the installer can insert a rod-shaped plug into the slot 301 between the high-voltage coil 93 and the low-voltage coil 92, and drive the gear set 30 to rotate circumferentially by rotating the rod-shaped plug.
[0037] Furthermore, to improve the firmness, Figures 3 to 5 As shown, a second stopper 103 is provided at one end of the two brackets 10 away from the first stopper 101 , and the second stopper 103 abuts against the inner wall of the low-voltage coil 92 .
[0038] The installation process is briefly described below: the installer first places the high-voltage coil 93 on the bracket 10, and makes the four first blocks 101 respectively abut against the outer wall of the high-voltage coil 93, then places the low-voltage coil 92 on the inner side of the high-voltage coil 93, and makes the bottom of the low-voltage coil 92 fit with the top surface of the two brackets 10, and the inner wall of the low-voltage coil 92 abuts against the second block 103, then inserts the rod-shaped plug into the slot 301 on the gear set 30, through By rotating the rod-shaped plunger, the two sliding blocks 102 on each of the brackets 10 move toward each other until one sliding block 102 abuts against the outer wall of the low-voltage coil 92 and the other sliding block 102 abuts against the inner wall of the high-voltage coil 93. The positions of the low-voltage coil 92 and the high-voltage coil 93 are then fixed. At this point, the connector 20 is lifted again, and the low-voltage coil 92, the high-voltage coil 93, and the auxiliary lifting device for the high and low-voltage coils of the dry-type transformer are integrally installed on the outside of the iron core 90. It should be added that the bracket 10 and the connector 20 are both staggered with the bottom pad 91 to prevent interference between the bracket 10 or the connector 20 and the bottom pad 91 during downward movement.
[0039] Furthermore, in order to facilitate the installation of the bracket 10 and the connector 20, Figure 2 and Figure 4 As shown, each of the connecting members 20 has a hanging hole 201 .
[0040] Furthermore, the two ends of the connecting member 20 are respectively connected to the corresponding bracket 10 in a detachable manner by bolts. It should be noted that after the low-voltage coil 92 and the high-voltage coil 93 are installed on the outside of the iron core 90, the bolts on the connecting member 20 and the corresponding bracket 10 can be loosened to remove the connecting member 20. When each of the connecting members 20 is removed, since there is no support at the bottom of each bracket 10, a downward pressure is applied to each bracket 10 to remove the bracket 10.
[0041] Furthermore, in order to improve the connection strength between the bracket 10 and the connector 20, as shown in FIG. Figure 2 、 Figure 3 and Figure 5 As shown, the auxiliary lifting device for the high and low voltage coils of the dry-type transformer also includes two first auxiliary frames 40. The bottoms of the two brackets 10 provided with the second stopper 103 each have a groove 104. The middle section of each first auxiliary frame 40 extends into the groove 104, and the two ends of each first auxiliary frame 40 are bent at a predetermined angle and fixedly connected to the bottom surfaces of the two connecting members 20 respectively, and the fixed connection method includes but is not limited to welding.
[0042] In addition, if Figure 2 As shown, the auxiliary lifting device for the high and low voltage coils of the dry-type transformer also includes two second auxiliary frames 50. A notch groove 105 is provided on both sides of the bottom of the other two brackets 10. One end of the second auxiliary frame 50 is fixedly connected to the bottom surface of the corresponding connecting member 20. The fixed connection method includes but is not limited to welding. The other end of the second auxiliary frame 50 extends into the notch groove 105 and provides supporting force.
[0043] In addition, refer to Figure 5 The width of the groove 104 is greater than or equal to the sum of the maximum distance from the connecting member 20 to the end of the bracket 10 away from the second stopper 103 and the width of the first auxiliary frame 40.
[0044] It should be noted that after loosening the bolts on the connecting member 20, in order to remove the connecting member 20 and the first auxiliary frame 40 and the second auxiliary frame 50 fixedly connected to the connecting member 20, the connecting member 20 must first be moved a predetermined distance toward the side of the high-voltage coil 93 away from the low-voltage coil 92, until the vertical projection of the bottom surface of the connecting member 20 and the top surface of the bracket 10 do not coincide. It should be pointed out that at this time, the middle section of the first auxiliary frame 40 moves to the side of the groove 104 away from the iron core 90, and the second auxiliary frame 50 slides out of the notch groove 105. Subsequently, the connecting member 20 is moved downward again, and the first auxiliary frame 40 is disengaged from the groove 104. At this time, the connecting member 20, the first auxiliary frame 40 and the second auxiliary frame 50 can be completely removed.
[0045] In summary, the auxiliary device for lifting high and low voltage coils of the dry-type transformer based on the embodiment of the present application is explained, which provides the auxiliary device for lifting high and low voltage coils of the dry-type transformer with advantages such as only needing to pay attention to one side during lifting and easy lifting.
[0046] It is worth mentioning that in the embodiments of this application, the auxiliary hoisting device for the high- and low-voltage coils of the dry-type transformer has a simple structure, does not involve complex manufacturing processes and expensive materials, and is highly economical. Furthermore, for manufacturers, the auxiliary hoisting device for the high- and low-voltage coils of the dry-type transformer provided in this application is easy to produce and low in cost, which is more conducive to controlling production costs and further promoting product promotion and use.
[0047] Those skilled in the art will appreciate that the embodiments of the present invention described above and shown in the accompanying drawings are provided for illustrative purposes only and are not intended to limit the present invention. The objectives of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been demonstrated and illustrated in the embodiments. Any variations or modifications may be made to the embodiments of the present invention without departing from these principles.
Claims
1. A device for hoisting high and low voltage coils of a dry-type transformer, used for simultaneously hoisting high-voltage coils and low-voltage coils, wherein the high-voltage coil is sheathed outside the low-voltage coil, and characterized in that: The auxiliary device for hoisting the high and low voltage coils of the dry-type transformer includes: Four brackets, the four brackets are arranged in a ring shape, the top surface of each bracket is provided with a first stopper and two sliding blocks, the two sliding blocks are slidably arranged on the bracket, and the two sliding blocks move toward or away from each other, when the sliding blocks slide a predetermined distance, one sliding block abuts against the outer side wall of the low-voltage coil, the other sliding block abuts against the inner side wall of the high-voltage coil, and the first stopper abuts against the outer side wall of the high-voltage coil; as well as Four connecting pieces, in the circumferential direction of the high-voltage coil, one connecting piece is provided between two adjacent brackets, and both ends of the connecting piece are respectively connected to the corresponding brackets.
2. The auxiliary device for hoisting high and low voltage coils of dry-type transformers according to claim 1 is characterized in that: The auxiliary lifting device for the high and low voltage coils of the dry-type transformer also includes several vertically arranged gear sets, and each of the two sliding blocks on the bracket has a rack portion on the opposite side. Each of the brackets has a gear set rotatably mounted thereon, and the gear set is located between the two rack portions, and the gear set is engaged with the two rack portions at the same time.
3. The auxiliary device for hoisting high and low voltage coils of dry-type transformers according to claim 2 is characterized in that: The top of each gear set is provided with a slot.
4. The auxiliary device for hoisting high and low voltage coils of dry-type transformers according to claim 3 is characterized in that: A second stopper is provided at one end of the two brackets away from the first stopper, and the second stopper abuts against the inner side wall of the low-voltage coil.
5. The auxiliary device for hoisting high and low voltage coils of dry-type transformer according to claim 4 is characterized in that: Both ends of the connecting member are detachably connected to the corresponding brackets.
6. The auxiliary device for hoisting high and low voltage coils of dry-type transformer according to claim 5, characterized in that: The auxiliary device for lifting the high and low voltage coils of the dry-type transformer also includes two first auxiliary frames. The bottoms of the two brackets provided with the second stopper each have a groove, the middle section of each first auxiliary frame extends into the groove, and the two ends of each first auxiliary frame are bent at a predetermined angle and fixedly connected to the two connecting members respectively.
7. The auxiliary device for hoisting high and low voltage coils of dry-type transformer according to claim 6, characterized in that: The auxiliary lifting device for the high and low voltage coils of the dry-type transformer also includes two second auxiliary frames, and a notch is provided on both sides of the bottom of the other two brackets. One end of the second auxiliary frame is fixedly connected to the corresponding connecting piece, and the other end of the second auxiliary frame extends into the notch.
8. The auxiliary device for hoisting high and low voltage coils of a dry-type transformer according to claim 7, characterized in that: The groove width is greater than or equal to the sum of a maximum distance between the connecting member and an end portion of the bracket facing away from the second stopper and a width of the first auxiliary frame.