Clamping structure of plane wound core

Abstract

The utility model relates to the technical field of iron core clamping pieces, and discloses a clamping structure of a plane wound iron core, which comprises an upper clamping piece, a lower clamping piece and a drawstring, the upper clamping piece is provided with two groups of through holes along the length direction, the lower clamping piece is also provided with two groups of through holes along the length direction, and the drawstring is arranged on the upper clamping piece. And the drawstring sequentially penetrates through the four groups of through holes of the upper clamping piece and the lower clamping piece and is connected end to end. According to the utility model, the drawstring has a clamping effect on the upper clamping piece and the lower clamping piece while fastening the iron core, and is suitable for the iron core with light weight, and the structure of the clamping piece has no redundancy design, so that the weight of a transformer body can be reduced, and the manufacturing cost can also be reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of core clamp spare, especially a kind of clamping structure of plane roll core. BACKGROUND

[0002] Plane roll core is the core of one or more roll core single frame combination into plane arrangement. Compared with the lamination core, it has the advantages of relatively simplified manufacturing process, low no-load loss, small noise, high material utilization, etc., so it is widely used in various transformers.

[0003] Referring to Figure 1 , the clamping structure of traditional plane roll core includes upper clamp, lower clamp, pull rod and pull belt, the pull belt is wound around the core for preliminary restraint, the upper clamp and the lower clamp clamp the core together with the pull belt, the two ends of the pull rod are fixed on the upper clamp and the lower clamp by bolts, and the pull rod applies tension to the upper clamp and the lower clamp, so that the upper clamp and the lower clamp can clamp the core.

[0004] The existing clamping structure has many inconveniences in assembly and disassembly process, which increases the complexity and time cost of operation. UTILITY MODEL CONTENT

[0005] In view of the shortcomings of the prior art, the utility model aims to provide a clamping structure of plane roll core to solve one or more problems in the prior art.

[0006] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0007] A clamping structure of plane roll core, comprising upper clamp, lower clamp and pull belt, the upper clamp is provided with two groups of through holes along its length direction, the lower clamp is also provided with two groups of through holes along its length direction, and the pull belt passes through the four groups of through holes of the upper clamp and the lower clamp in sequence and is connected end to end.

[0008] Through the above scheme, the pull belt tightens the core while clamping the upper clamp and the lower clamp, which is suitable for the core with small weight, and the clamp structure has no redundant design, which not only reduces the weight of transformer body, but also reduces the manufacturing cost.

[0009] Further, it further includes pull rod, and the pull rod is connected between the upper clamp and the lower clamp.

[0010] Through the above scheme, for the heavy weight large capacity core, the pull rod is the main force structure, which makes up for the problem of insufficient tensile strength of the pull belt connection.

[0011] Further, the upper clamp is provided with a fixing hole, the lower clamp is provided with a hanging hole, one end of the pull rod passes through the fixing hole and is fixed to the upper clamp by a bolt, and the other end of the pull rod is in the form of a hook and is hooked in the hanging hole of the lower clamp.

[0012] Through the above scheme, the pull rod only needs to be connected to the upper clamp by a bolt at one end, and half of the assembly time is reduced while the connection stability is still ensured.

[0013] Further, the upper clamp is further provided with a fixing member, and the fixing member is provided with a waist-shaped hole.

[0014] Through the above scheme, the bolt mounting hole is provided for fixing to an external structure, so that the clamp structure is more stable when being fixed to the external structure.

[0015] Further, the fixing member is detachably connected to the upper clamp by a bolt.

[0016] Further, the upper clamp and the lower clamp have the same structure.

[0017] Through the above scheme, the upper clamp and the lower clamp have the same structure, and large-scale production is facilitated.

[0018] Compared with the prior art, the clamping method has the beneficial technical effects that the clamping method has simple structure, is convenient to operate, and is easy to assemble and disassemble. The upper clamp and the lower clamp of the clamping structure are consistent, the overall structure has no redundant design, is light in weight, is suitable for large-scale automatic production, and is low in manufacturing cost. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 The clamping structure of the planar iron core in the prior art is shown.

[0020] Figure 2 The clamping structure of the iron core with small mass is shown.

[0021] Figure 3 The structural schematic view of the upper clamp is shown.

[0022] Figure 4 The clamping structure of the iron core with large mass is shown.

[0023] Figure 5 The structural schematic view of the pull rod is shown.

[0024] The drawings show that: 1, the upper clamp; 2, the lower clamp; 3, the pull rod; 4, the pull belt; 5, the through hole; 6, the fixing hole; 7, the hanging hole; 8, the fixing member; 81, the waist-shaped hole; 9, the mounting hole. DETAILED DESCRIPTION

[0025] A clamping structure of a planar wound core, referring to Figure 2 , comprises an upper clamp 1, a lower clamp 2 and a pull belt 4. The upper clamp 1 is provided with two groups of through holes 5 along its length direction, the lower clamp 2 is also provided with two groups of through holes 5 along its length direction, and the pull belt 4 is sequentially threaded through the four groups of through holes 5 of the upper clamp 1 and the lower clamp 2 and connected end to end.

[0026] The upper clamp 1 and the lower clamp 2 are the same in structure. The upper clamp 1 is taken as an example for introduction, referring to Figure 3 , the upper clamp 1 is a U-shaped bent piece, and the upper clamp 1 comprises a main body and two side edges bent at both sides of the main body. The through holes 5 are all provided on the main body of the upper clamp 1, and the main body of the upper clamp 1 is further provided with two groups of fixing holes 6. The two groups of fixing holes 6 and the two groups of through holes 5 correspond to each other one to one, and the fixing holes 6 are located on the side away from the center of the main body corresponding to the through holes 5, so as to avoid interference on the position of the pull belt 4.

[0027] Although the upper clamp 1 and the lower clamp 2 are the same in structure, there are still some differences in actual use. The upper clamp 1 is additionally provided with a fixing piece 8. The fixing piece 8 is detachably connected to the upper clamp 1 through the cooperation of the bolt and the fixing hole 6. The fixing piece 8 is provided with a waist-shaped hole 81.

[0028] The above-mentioned clamping structure is suitable for the core with small mass, and the weight of the core can be borne by the self-strength of the pull belt 4. For the core with larger mass, the pull belt 4 alone is easy to break when connecting the upper clamp and the lower clamp, and the clamping structure at this time further comprises a pull rod 3 connected between the upper clamp 1 and the lower clamp 2, and the pull rod 3 is taken as the main force structure, as shown in Figure 4 .

[0029] Referring to Figure 5 , one end of the pull rod 3 is provided with a thread, and the other end is a U-shaped hook. In order to cooperate with the use of the pull rod 3, the upper clamp 1 and the lower clamp 2 are both provided with fixing holes 6 and hanging holes 7, as shown in Figure 3 . Among them, the fixing holes 6 are provided on the main body of the corresponding clamp, and the hanging holes 7 are provided on the side edge of the corresponding clamp. In use, as shown in Figure 4 , the threaded end of the pull rod 3 is vertically upward through the fixing hole 6 of the upper clamp 1 and is fixed to the upper clamp 1 by a bolt, and the U-shaped end of the pull rod 3 is hooked in the hanging hole 7 of the lower clamp 2.

[0030] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combination of the technical features does not exist contradictory, it should be considered as the scope of the present disclosure.

[0031] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A clamping structure of a planar wound core comprising an upper clamp (1), a lower clamp (2) and a tension band (4), characterized in that: The upper clamp (1) is provided with two groups of through holes (5) along its length direction, the lower clamp (2) is also provided with two groups of through holes (5) along its length direction, the pull belt (4) is sequentially threaded through the four groups of through holes (5) of the upper clamp (1) and the lower clamp (2) and connected in a head-to-tail mode.

2. The clamping structure for a flat rolled core as set forth in claim 1, wherein: A pull rod (3) is further included, which is connected between the upper clamp (1) and the lower clamp (2).

3. The clamping structure for a flat rolled core as set forth in claim 2, wherein: The upper clamp (1) is provided with a fixing hole (6), the lower clamp (2) is provided with a hanging hole (7), one end of the pull rod (3) is threaded through the fixing hole (6) and fixed to the upper clamp (1) by a bolt, and the other end of the pull rod (3) is in the form of a hook and hooked in the hanging hole (7) of the lower clamp (2).

4. The clamping structure for a flat rolled core as set forth in claim 1, wherein: A fixing member (8) is further fixed to the upper clamp (1), and the fixing member (8) is provided with a waist-shaped hole (81).

5. The clamping structure of a planar wound core according to claim 4, wherein: The fixing member (8) is detachably connected to the upper clamp (1) by a bolt.

6. A clamping structure for a flat rolled core as claimed in claim 5, wherein: The upper clamp (1) and the lower clamp (2) are of the same structure.

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