Claw type self-tightening pile head device of transformer

Abstract

The utility model provides a claw type self-tightening pile head device of a transformer, which comprises a claw connecting seat which comprises a first connecting part and a second connecting part and can be screwed on a pile head of the transformer through the first connecting part; one end, deviating from the first connecting part, of the second connecting part is in a non-closed elastic deformation form, the second connecting part can generate radial opening and closing deformation action when the outer side is subjected to annular acting force, and the second connecting part can hold and press the electric wire when the second connecting part gets close to the circle center and deforms; the second connecting part is separated from the electric wire when the second connecting part is gradually opened towards the outer side; and the locking block is matched with the second connecting part in a screwing manner, and the screwing force of the locking block is pressed on the second connecting part, so that the second connecting part generates a radial tightening deformation action to press the electric wire. The locking block is sleeved on the second connecting part, the locking block is screwed in place, the claw petals generate radial deformation tightening action under the screwing force of the threads, so that the electric wire is held and clamped, the connection stability is improved, and the self-tightening connection of the claw petal connecting seat is realized through the locking block.

Description

Technical Field

[0001] The utility model belongs to the technical field of transformer connection devices, and in particular relates to a transformer claw-flap type self-tightening pile head device. Background Art

[0002] The connection of the external wires of the transformer is currently achieved by locking with bolts and nuts. Although this traditional method can achieve locking, it only uses axial pre-tightening force to achieve connection fixation, and the force point is small, resulting in insufficient fixing force and relatively poor connection stability. Utility Model Content

[0003] The utility model aims to provide a transformer claw-flap self-tightening pile head device, which is used to be installed on the transformer pile head and lock the connecting wires. The transformer claw-flap self-tightening pile head device comprises:

[0004] The claw-flap connector includes a first connector and a second connector, and can be screwed onto the transformer pile head through the first connector;

[0005] The second connection part is arranged at the other side of the first connection part, and the end of the second connection part away from the first connection part is in a non-closed elastically deformable form, and the wire can be inserted into the second connection part from one end, and the second connection part can produce a radial opening and closing deformation action when the outer side is subjected to a circumferential force, and when the second connection part deforms toward the center of the circle, it can hold and press the wire tightly; when the second connection part gradually opens outward, it is detached from the wire;

[0006] The locking block is screwed together with the second connection part and is configured so that when the locking block is screwed on the claw connection seat, the tightening force of the locking block is pressed on the second connection part, so that the second connection part produces a radial tightening deformation action to press the wire; when the locking block is gradually removed, the second connection part elastically returns to its original position and disengages from the wire.

[0007] A further implementation scheme of the utility model is that the first connecting part includes a main body part, a connecting position is concentrically provided on the main body part, the connecting position is a blind hole, and an internal thread is arranged in the connecting position, and the claw valve connecting seat is screwed on the transformer pile head through the connecting position.

[0008] A further implementation scheme of the utility model is that the main body portion is provided with a first deformation groove along its diameter, and the first connecting portion can be slightly deformed when subjected to a pressing force through the first deformation groove.

[0009] A further implementation scheme of the utility model is that first screw holes are symmetrically opened on both sides of the exterior of the main body, the first screw holes pass through the first deformation groove, and the first screw holes are used for screwing through. Under the tightening action, the connection position is pressed tightly on the transformer pile head.

[0010] A further implementation scheme of the utility model is that the second connecting portion includes a plurality of claw petals, and a second deformation groove is formed between adjacent claw petals. Under the action of the second deformation groove, the claw petals can undergo elastic deformation when subjected to radial force, and an internal thread is provided on the inner wall of one end of the claw petal.

[0011] A further embodiment of the present invention is that the outer portion of one end of the claw flap away from the first connecting portion has a draft angle, and the draft angle is between 1° and 5°.

[0012] A further implementation scheme of the utility model is that the second connection part is provided with an external threaded part, and the locking block is screwed together with the external threaded part so that the tightening force acts on the second connection part to make the claws press the wires.

[0013] A further implementation scheme of the utility model is that the second connecting part also includes an avoidance platform located between the external threaded part and the main body part, the avoidance platform is an equihexagonal platform, and no threads are arranged at the position corresponding to the avoidance platform inside the locking block. When the locking block is locked in place on the second connecting part, one end of the locking block fits into one end of the main body part.

[0014] A further implementation scheme of the utility model is that a second screw hole is provided on the external threaded portion, and a screw is used to pass through the second screw hole to abut against the outside of the electric wire.

[0015] A further implementation scheme of the utility model is that the claw flap connecting seat is integrally formed.

[0016] The beneficial effects of the utility model are:

[0017] The claw flap connector includes a first connecting part and a second connecting part, which are screwed and fixed on the transformer pole head by the first connecting part, and are tightened to the transformer pole head again after the screw passes through the first screw hole. The second connecting part is the insertion end of the wire. The second connecting part includes multiple claw flaps that can produce elastic deformation. The locking block is inserted into the second connecting part, and the locking block is screwed into place. The tightening force of the thread causes the claw flap to produce a radially deformed tightening action to embrace and clamp the wire. The wire is clamped with a larger embracing area, and a second screw hole is opened on the threaded part. After the screw passes through the second screw hole, it is pressed against the outside of the wire and tightened again, thereby improving the stability of the connection. The self-tightening connection of the claw flap connector is achieved through the locking block, and the operation is simple and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall assembly structure of the utility model;

[0019] Figure 2 The structure of the claw-flap connection seat of the utility model is shown in FIG. Figure 1 ;

[0020] Figure 3 The structure of the claw-flap connection seat of the utility model is shown in FIG. Figure 2 ;

[0021] Figure 4 It is a structural schematic diagram of the locking block;

[0022] Figure 5 It is a cross-sectional schematic diagram of the utility model. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0024] In the description of the present application, it should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0026] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0027] Example 1

[0028] like Figure 1 This embodiment provides a transformer claw-flap self-tightening pile head device, which is used to be installed on the transformer pile head and lock the connected wires. The transformer claw-flap self-tightening pile head device includes: a claw-flap connecting seat 1 and a locking block 2.

[0029] Wherein, the claw-flap connecting seat 1 is integrally formed.

[0030] like Figure 2 and Figure 3 As shown, the claw-flap connector 1 comprises a first connecting portion 10 and a second connecting portion 11 , and the first connecting portion 10 can be screwed onto the transformer pile head.

[0031] Specifically, the first connecting portion 10 includes a main body 100, on which a connecting position 101 is concentrically provided. The connecting position 101 is a blind hole, and an internal thread is arranged inside the connecting position 101. The claw-flap connecting seat 1 is screwed onto the transformer pile head through the connecting position 101. During installation, the connecting position 101 is first placed against the transformer pile head, and then the claw-flap connecting seat 1 is rotated for the first pre-tightening.

[0032] like Figure 2 The main body 100 has a first deformation groove 102 along its diameter, and the first deformation groove 102 enables the first connecting portion 10 to be slightly deformed when subjected to a clamping force. The width of the first deformation groove 102 is smaller than the diameter of the connecting position 101, and the depth of the first deformation groove 102 is smaller than the height of the main body 100.

[0033] More specifically, if Figure 3The first screw holes 103 are symmetrically opened on both sides of the outside of the main body 100, and the first screw holes 103 pass through the first deformation groove 102. The first screw holes 103 are used for screwing through. Under the tightening action, the connection position 101 is pressed tightly on the transformer pile head. The connection position 101 is used as the first pre-tightening. In order to tighten again, through the action of the screw and the first screw hole 103, that is, when the screw is tightened, the width of the first deformation groove 102 will become smaller, so that it is tightly fixed on the transformer pile head.

[0034] Secondly, the second connection part 11 is arranged on the other side of the first connection part 10, and the end of the second connection part 11 away from the first connection part 10 is in a non-closed elastically deformable state. The wire can be inserted from one end into the second connection part 11, and the second connection part 11 can produce a radial opening and closing deformation action when the outer side is subjected to a circumferential force. When the second connection part 11 deforms toward the center of the circle, it can hold and press the wire; when the second connection part 11 gradually opens outward, it detaches from the wire.

[0035] The locking block 2 is screwed together with the second connecting part 11, and is configured so that when the locking block 2 is screwed on the claw connecting seat 1, the tightening force of the locking block 2 is pressed on the second connecting part 11, so that the second connecting part 11 produces a radial tightening deformation action to press the wire; when the locking block 2 is gradually removed, the second connecting part 11 elastically returns to its original position and detaches from the wire.

[0036] Specifically, the second connecting portion 11 includes a plurality of claw flaps 110, and a second deformation groove 111 is formed between adjacent claw flaps 110. Under the action of the second deformation groove 111, the claw flap 110 can undergo elastic deformation when subjected to radial force. An internal thread is provided on the inner wall of one end of the claw flap 110, and an external thread portion 112 is provided on the outside of the second connecting portion 11. The interior of the locking block 2 is screwed together with the external thread portion 112, so that the tightening force acts on the second connecting portion 11 to enable the claw flap 110 to press the wire tightly.

[0037] The second connection portion 11 also includes an avoidance platform 113 located between the external threaded portion 112 and the main body 100. The avoidance platform 113 is an equihexagonal platform. There is no thread at the position corresponding to the avoidance platform 113 inside the locking block 2. When the locking block 2 is locked in place on the second connection portion 11, one end of the locking block 2 fits into one end of the main body 100.

[0038] In order to facilitate the insertion of the locking block 2 , a draft angle is provided on the outer side of the end of the claw 110 away from the first connecting portion 10 , and the draft angle is between 1° and 5°.

[0039] In this way, the second connecting part 11 is the insertion end of the wire, and the second connecting part 11 includes multiple claws 110 that can produce elastic deformation. The locking block 2 is inserted into the second connecting part 11, and the locking block 2 is tightened into place. The tightening force of the thread causes the claws 110 to produce a radial deformation and tightening action to embrace and clamp the wire. The wire is clamped with a larger embracing area, which improves the stability of the connection. The self-tightening connection of the claw connection seat 1 is achieved through the locking block 2, and the operation is simple and reliable.

[0040] Example 2

[0041] A transformer claw 110 type self-tightening pile head device is used for being installed on a transformer pile head and locking a connecting wire. The transformer claw 110 type self-tightening pile head device comprises: a claw connecting seat 1 and a locking block 2.

[0042] Wherein, the claw-flap connecting seat 1 is integrally formed.

[0043] The claw-flap connector 1 comprises a first connecting portion 10 and a second connecting portion 11 , and the first connecting portion 10 can be screwed onto the transformer pile head.

[0044] Specifically, the first connecting portion 10 includes a main body 100, on which a connecting position 101 is concentrically provided. The connecting position 101 is a blind hole, and an internal thread is arranged inside the connecting position 101. The claw-flap connecting seat 1 is screwed onto the transformer pile head through the connecting position 101. During installation, the connecting position 101 is first placed against the transformer pile head, and then the claw-flap connecting seat 1 is rotated for the first pre-tightening.

[0045] The main part 100 has a first deformation groove 102 along its diameter, and the first deformation groove 102 enables the first connecting part 10 to be slightly deformed when subjected to a clamping force. The width of the first deformation groove 102 is smaller than the diameter of the connecting position 101, and the depth of the first deformation groove 102 is smaller than the height of the main part 100.

[0046] More specifically, first screw holes 103 are symmetrically provided on both sides of the outside of the main body 100, and the first screw holes 103 pass through the first deformation groove 102. The first screw holes 103 are used for screwing the screws through. Under the tightening action, the connection position 101 is pressed tightly on the transformer pile head. The connection position 101 is used as the first pre-tightening. In order to tighten again, through the action of the screws and the first screw holes 103, that is, when the screws are tightened, the width of the first deformation groove 102 will become smaller, so that it is tightly fixed on the transformer pile head.

[0047] Secondly, the second connection part 11 is arranged on the other side of the first connection part 10, and the end of the second connection part 11 away from the first connection part 10 is in a non-closed elastically deformable state. The wire can be inserted from one end into the second connection part 11, and the second connection part 11 can produce a radial opening and closing deformation action when the outer side is subjected to a circumferential force. When the second connection part 11 deforms toward the center of the circle, it can hold and press the wire; when the second connection part 11 gradually opens outward, it detaches from the wire.

[0048] The locking block 2 is screwed together with the second connecting part 11, and is configured so that when the locking block 2 is screwed on the claw connecting seat 1, the tightening force of the locking block 2 is pressed on the second connecting part 11, so that the second connecting part 11 produces a radial tightening deformation action to press the wire; when the locking block 2 is gradually removed, the second connecting part 11 elastically returns to its original position and detaches from the wire.

[0049] Specifically, the second connecting portion 11 includes a plurality of claw flaps 110, and a second deformation groove 111 is formed between adjacent claw flaps 110. Under the action of the second deformation groove 111, the claw flap 110 can undergo elastic deformation when subjected to radial force. An internal thread is provided on the inner wall of one end of the claw flap 110, and an external thread portion 112 is provided on the outside of the second connecting portion 11. The interior of the locking block 2 is screwed together with the external thread portion 112, so that the tightening force acts on the second connecting portion 11 to enable the claw flap 110 to press the wire tightly.

[0050] The second connection portion 11 also includes an avoidance platform 113 located between the external threaded portion 112 and the main body 100. The avoidance platform 113 is an equihexagonal platform. There is no thread at the position corresponding to the avoidance platform 113 inside the locking block 2. When the locking block 2 is locked in place on the second connection portion 11, one end of the locking block 2 fits into one end of the main body 100.

[0051] In order to facilitate the insertion of the locking block 2 , a draft angle is provided on the outer side of the end of the claw 110 away from the first connecting portion 10 , and the draft angle is between 1° and 5°.

[0052] In this embodiment, a second screw hole 114 is opened on the external threaded portion 112, and a screw is used to pass through the second screw hole 114 to abut against the outside of the wire. After the screw passes through the second screw hole 114, it abuts against the outside of the wire and is tightened again, pre-tightening the wire in both radial and axial directions to improve the stability of the connection. The self-tightening connection of the claw-flap connecting seat 1 is achieved through the locking block 2, and the operation is simple and reliable.

[0053] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A transformer claw-type self-tightening pile head device, used to be installed on the transformer pile head and lock the connecting wires, characterized in that: The transformer claw-type self-tightening pile head device comprises: The claw-flap connector includes a first connector and a second connector, and can be screwed onto the transformer pile head through the first connector; The second connection part is arranged at the other side of the first connection part, and the end of the second connection part away from the first connection part is in a non-closed elastically deformable form, and the wire can be inserted into the second connection part from one end, and the second connection part can produce a radial opening and closing deformation action when the outer side is subjected to a circumferential force, and when the second connection part deforms toward the center of the circle, it can hold and press the wire tightly; when the second connection part gradually opens outward, it is detached from the wire; The locking block is screwed together with the second connection part and is configured so that when the locking block is screwed on the claw connection seat, the tightening force of the locking block is pressed on the second connection part, so that the second connection part produces a radial tightening deformation action to press the wire; when the locking block is gradually removed, the second connection part elastically returns to its original position and disengages from the wire.

2. A transformer claw-type self-tightening pile head device according to claim 1, characterized in that: The first connection part comprises a main body part, a connection position is concentrically arranged on the main body part, the connection position is a blind hole, and an internal thread is arranged in the connection position, and the claw valve connection seat is screwed on the transformer pile head through the connection position.

3. A transformer claw-type self-tightening pile head device according to claim 2, characterized in that: The main body portion is provided with a first deformation groove along its diameter, and the first connection portion can be slightly deformed when subjected to a pressing force through the first deformation groove.

4. A transformer claw-type self-tightening pile head device according to claim 3, characterized in that: The main body is provided with first screw holes symmetrically on both sides of its exterior. The first screw holes pass through the first deformation grooves. The first screw holes are used for screwing screws through. When tightened, the connection position is pressed against the transformer pile head.

5. A transformer claw-type self-tightening pile head device according to claim 4, characterized in that: The second connecting portion includes a plurality of claw petals, and a second deformation groove is formed between adjacent claw petals. Under the action of the second deformation groove, the claw petals can undergo elastic deformation when subjected to radial force, and an internal thread is provided on the inner wall of one end of the claw petal.

6. A transformer claw-type self-tightening pile head device according to claim 5, characterized in that: The outer portion of one end of the claw flap away from the first connecting portion has a draft angle, and the draft angle is between 1° and 5°.

7. The transformer claw-type self-tightening pile head device according to claim 5, characterized in that: The second connection part is provided with an external threaded part, and the locking block is screwed and matched with the external threaded part, so that the tightening force acts on the second connection part to make the claws press the wires.

8. The transformer claw-type self-tightening pile head device according to claim 7, characterized in that: The second connection part also includes an avoidance platform located between the external threaded part and the main body part. The avoidance platform is an equihexagonal platform. There is no thread at the position corresponding to the avoidance platform inside the locking block. When the locking block is locked in place on the second connection part, one end of the locking block fits into one end of the main body part.

9. The transformer claw-type self-tightening pile head device according to claim 7, characterized in that: The external threaded portion is provided with a second screw hole for a screw to pass through the second screw hole and abut against the outside of the electric wire.

10. The transformer claw-type self-tightening pile head device according to claim 1, characterized in that: The claw-flap connecting seat is integrally formed.

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