Strain clamp for aluminum alloy core aluminum stranded wire and assembly method of strain clamp

Abstract

The invention relates to the technical field of accessories for overhead transmission lines, and discloses a strain clamp for an aluminum alloy core aluminum stranded wire and an assembly method of the strain clamp. The sleeve main body is respectively in compression joint with the end part connecting part of the steel anchor main body, the exposed aluminum alloy core and the aluminum stranded wire without the exposed aluminum alloy core through the inner layer compression joint pipe and the outer layer compression joint pipe, so that the tightness and the protectiveness of the sleeve main body to the aluminum stranded wire main body with the aluminum alloy core can be effectively improved; the inner side and the outer side of the outer-layer crimping pipe are provided with crimping grooves with U-shaped structures, so that the tightness between the outer-layer crimping pipe and the sleeve main body can be effectively enhanced, and the crimping fixing effect on the aluminum alloy core aluminum stranded wire is further improved; the technical problem that an existing strain clamp is poor in crimping and fixing effect on an aluminum alloy core aluminum stranded wire is solved.

Description

Technical Field

[0001] The invention relates to the technical field of accessories for overhead power transmission lines, and in particular to a tension clamp for aluminum alloy core aluminum stranded wire and an assembly method thereof. Background Art

[0002] In overhead transmission lines, the application of aluminum alloy core aluminum stranded wire as transmission conductor has become more and more widespread, and has gradually replaced the original steel core stranded wire. The structure of aluminum alloy core aluminum stranded wire is that the inner layer is an aluminum alloy core, and the outer layer is covered with an outer layer formed by aluminum stranded wire or soft aluminum stranded wire. Aluminum alloy core aluminum stranded wire has high tensile strength and good sag characteristics, and can withstand thicker ice layers and larger wind loads. Among them, the important force carrier is mainly the aluminum alloy core, so when laying the conductor, it must be equipped with a tension clamp to anchor and clamp the aluminum alloy core. Correspondingly, the tension clamp should have the ability to withstand the tension of the conductor.

[0003] Patent No. CN103457219A discloses an "aluminum alloy core aluminum stranded wire tension clamp". Although it can be used to connect aluminum alloy core aluminum stranded wire, the aluminum alloy core aluminum stranded wire needs to be inserted into the aluminum tube therein, and the outer coating at the end of the aluminum alloy core aluminum stranded wire needs to be peeled off during actual installation. This results in the aluminum alloy core aluminum stranded wire extending into the aluminum tube having two sections with different diameters. One section has a smaller diameter and is the part with only the aluminum alloy core left, and the other section has a thicker diameter and is the part with the aluminum stranded wire wrapped around the outside of the aluminum alloy core. In this case, only using the aluminum tube to crimp the aluminum alloy core aluminum stranded wire inside it may result in poor crimping and fixing effect of the aluminum alloy core aluminum stranded wire.

[0004] Therefore, there is an urgent need in the art for a new type of tension clamp for aluminum alloy core aluminum stranded wire to solve the above problems. Summary of the invention

[0005] The invention provides a tension clamp for aluminum alloy core aluminum stranded wire and an assembly method thereof, which solves the technical problem that the existing tension clamp has poor crimping and fixing effect on the aluminum alloy core aluminum stranded wire.

[0006] A first aspect of the present invention provides a tension clamp for an aluminum alloy core aluminum stranded wire, comprising a sleeve body, a steel anchor body, an inner layer compression tube and an outer layer compression tube;

[0007] The end of the steel anchor body is inserted from one end of the sleeve body, and the other end of the sleeve body is used to connect the aluminum alloy core aluminum stranded wire body;

[0008] The inner layer compression tube is arranged on the outer side of the end of the steel anchor body and the outer side of the aluminum alloy core at the middle end of the aluminum alloy core aluminum stranded wire body;

[0009] The outer layer compression tube is arranged on the outside of the aluminum alloy core aluminum stranded wire body;

[0010] The outer wall of the outer layer crimping tube is provided with a crimping groove;

[0011] The inner layer compression tube and the outer layer compression tube are both arranged on the inner side of the sleeve body.

[0012] Optionally, the steel anchor body comprises a steel anchor ring body, a middle connecting part and an end connecting part which are connected in sequence;

[0013] The steel anchor ring is located outside the casing body;

[0014] The middle connecting portion and the end connecting portion are located inside the sleeve body;

[0015] The diameter of the middle connecting portion is greater than the diameter of the end connecting portion;

[0016] The inner layer compression tube is arranged on the outer side of the end connection part;

[0017] The outer layer compression tube is arranged on the outside of the aluminum alloy core aluminum stranded wire body;

[0018] The middle connecting portion and the end connecting portion are both provided with a plurality of annular grooves.

[0019] Optionally, a sealing outer cylinder is provided on one side of the steel anchor ring body;

[0020] The sealing outer cylinder is located outside the sleeve body, and absorbent cotton is filled between the sealing outer cylinder and the sleeve body;

[0021] A sealing ring is welded together between the sleeve body and one end of the outer layer compression tube away from the steel anchor body.

[0022] Optionally, absorbent cotton is filled between the middle connecting portion and the sleeve body.

[0023] Optionally, the sleeve body, the outer layer compression tube and the inner layer compression tube are all made of aluminum or aluminum alloy.

[0024] Optionally, it also includes a drainage plate body and a drainage wire clip;

[0025] The guide plate body is provided with a connecting through hole, and the sleeve body passes through the connecting through hole;

[0026] The guide plate body is fixed to the sleeve body by welding.

[0027] Optionally, two first connecting plates arranged parallel to each other are provided at one end of the drainage plate body close to the drainage wire clamp;

[0028] A U-shaped connecting groove is formed between the two first connecting plates;

[0029] The drainage wire clamp is provided with a second connecting plate at one end close to the drainage plate body;

[0030] The second connecting plate is embedded in the U-shaped connecting groove, and the second connecting plate is fixedly connected to the first connecting plate constituting the U-shaped connecting groove by bolts.

[0031] Optionally, the outer sides of the steel anchor ring and the drainage wire clamp are both provided with an insulating layer;

[0032] The insulating layer is made of rubber.

[0033] Optionally, a gripping portion is provided on the steel anchor ring body.

[0034] The second aspect of the present invention provides an assembly method for a tension clamp for an aluminum alloy core aluminum stranded wire, comprising:

[0035] Sleeve the inner layer compression tube onto the end connection part in the steel anchor body, wherein the sleeved part is crimped by a hydraulic press;

[0036] Sleeve the sleeve body and the outer layer compression tube onto the outside of the aluminum alloy core aluminum stranded wire body;

[0037] Inserting the aluminum alloy core from which the outer layer has been peeled off by a preset peeling length into the inner layer crimping tube, and pressing the inner layer crimping tube and the aluminum alloy core together by a hydraulic press;

[0038] Move the sleeve body and the outer layer crimping tube so that the sleeve body is located outside the inner layer crimping tube and the middle connecting portion;

[0039] The sleeve body is crimped with the middle connecting part, the sealing outer tube, the inner layer crimping tube and the outer layer crimping tube in sequence to anchor the aluminum alloy core aluminum stranded wire body.

[0040] It can be seen from the above technical solutions that the present invention has the following advantages:

[0041] The present invention adds an inner crimping tube and an outer crimping tube in the sleeve body, and the sleeve body is crimped with the end connection part of the steel anchor body, the exposed aluminum alloy core, and the aluminum stranded wire without exposed aluminum alloy core through the inner crimping tube and the outer crimping tube respectively, thereby effectively improving the tightness and protection of the sleeve body to the aluminum alloy core aluminum stranded wire body. At the same time, crimping grooves of a U-shaped structure are provided on both the inner and outer sides of the outer crimping tube, which can effectively enhance the tightness between the outer crimping tube and the sleeve body, and further improve the crimping and fixing effect of the aluminum alloy core aluminum stranded wire. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0043] Figure 1 This is a schematic structural diagram of a tension clamp for an aluminum alloy core aluminum stranded wire according to an embodiment of the present invention;

[0044] Figure 2 This is a schematic structural diagram of a steel anchor body in a tension clamp for an aluminum alloy core aluminum stranded wire according to an embodiment of the present invention;

[0045] Figure 3 It is a structural schematic diagram of the main body of the drainage plate in the tension clamp for aluminum alloy core aluminum stranded wire according to an embodiment of the present invention;

[0046] Figure 4 It is a schematic structural diagram of a drainage wire clamp in a tension wire clamp for an aluminum alloy core aluminum stranded wire according to an embodiment of the present invention;

[0047] Figure 5 It is a schematic structural diagram of the outer and inner lamination pipes of the tension clamp for the aluminum alloy core aluminum stranded wire according to the embodiment of the present invention;

[0048] Figure 6 This is a flowchart of the steps of an assembly method of a tension clamp for aluminum alloy core aluminum stranded wire according to an embodiment of the present invention;

[0049] The meanings of the reference numerals are as follows:

[0050] 1. Casing body; 2. Steel anchor body; 201. Steel anchor ring body; 202. Middle connecting part; 203. End connecting part; 204. Gripping part; 205. Sealing outer tube; 3. Inner layer crimping tube; 4. Outer layer crimping tube; 5. Aluminum alloy core; 6. Aluminum stranded wire; 7. Drainage plate body; 8. Drainage wire clamp; 9. Water-absorbing cotton; 10. Sealing ring. DETAILED DESCRIPTION

[0051] The embodiment of the present invention provides a tension clamp for aluminum alloy core aluminum stranded wire and an assembly method thereof, which are used to solve the technical problem that the existing tension clamp has poor crimping and fixing effect on the aluminum alloy core aluminum stranded wire.

[0052] In order to make the object, features, and advantages of the present invention more obvious and understandable, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the embodiments described below are only a part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0053] Please refer to Figure 1-Figure 5 , a strain clamp for an aluminum alloy core aluminum stranded wire provided by the present invention includes a sleeve body 1, a steel anchor body 2, an inner pressing tube 3, and an outer pressing tube 4;

[0054] The end of the steel anchor body 2 is inserted from one end of the sleeve body 1, and the other end of the sleeve body 1 is used to connect the aluminum alloy core aluminum stranded wire body;

[0055] The inner pressing tube 3 is arranged outside the end of the steel anchor body 2 and outside the aluminum alloy core 5 at the end in the aluminum alloy core aluminum stranded wire body;

[0056] The outer pressing tube 4 is arranged outside the aluminum alloy core aluminum stranded wire body;

[0057] A pressing groove is arranged on the outer wall of the outer pressing tube 4;

[0058] Both the inner pressing tube 3 and the outer pressing tube 4 are arranged inside the sleeve body 1.

[0059] In the embodiment of the present invention, an inner pressing tube 3 and an outer pressing tube 4 are added inside the sleeve body 1. The sleeve body 1 is respectively crimped to the connecting part 203 at the end of the steel anchor body 2, the exposed aluminum alloy core 5, and the aluminum stranded wire 6 without the exposed aluminum alloy core 5 through the inner pressing tube 3 and the outer pressing tube 4, so as to effectively improve the tightness and protection of the sleeve body 1 to the aluminum alloy core aluminum stranded wire body. At the same time, pressing grooves with a U-shaped structure are arranged on both the inner and outer sides of the outer pressing tube 4, which can effectively enhance the tightness between the outer pressing tube 4 and the sleeve body 1, and further improve the crimping and fixing effect on the aluminum alloy core aluminum stranded wire.

[0060] It should be noted that one end of the aluminum alloy core aluminum stranded wire body inserted into the inside of the sleeve body 1 needs to remove a section of the outer aluminum stranded wire 6, so as to expose a section of the aluminum alloy core 5. The inner crimping sleeve 3 is sleeved on the outside of this exposed part of the aluminum alloy core 5. The outer crimping sleeve 4 is arranged on the outside of the aluminum alloy core aluminum stranded wire body, that is, the aluminum stranded wire 6. The outer wall of the outer crimping sleeve 4 is provided with a plurality of crimping grooves, and the number of the crimping grooves is multiple and arranged at equal intervals. The crimping groove is of a U-shaped structure. During the crimping process, due to the existence of the U-shaped crimping groove, the tightness between it and the sleeve body 1 can be effectively enhanced. Both the inner crimping sleeve 3 and the outer crimping sleeve 4 are arranged inside the sleeve body 1. One end of the sleeve body 1 far from the steel anchor body 2 is provided with a tapered structure with a taper, which is easier for the staff to hold, so as to more conveniently realize the insertion of the aluminum alloy core aluminum stranded wire body.

[0061] Please refer to Figure 1 and Figure 2 As shown in and, a strain clamp for an aluminum alloy core aluminum stranded wire provided by the present invention, the steel anchor body 2 includes a steel anchor ring body 201, a middle connecting portion 202 and an end connecting portion 203 connected in sequence;

[0062] The steel anchor ring body 201 is located outside the sleeve body 1;

[0063] The middle connecting portion 202 and the end connecting portion 203 are located inside the sleeve body 1;

[0064] The diameter of the middle connecting portion 202 is larger than the diameter of the end connecting portion 203;

[0065] The inner crimping sleeve 3 is arranged outside the end connecting portion 203;

[0066] The outer crimping sleeve 4 is arranged outside the aluminum alloy core aluminum stranded wire body;

[0067] A plurality of annular grooves are provided on both the middle connecting portion 202 and the end connecting portion 203.

[0068] It should be noted that a plurality of annular grooves are provided on both the middle connecting portion 202 and the end connecting portion 203. The purpose of setting the annular grooves is that when the sleeve body 1 is crimped, the inner crimping sleeve 3 and the sleeve body 1 will deform and embed into the recesses, which greatly increases the radial friction force and makes it difficult for the aluminum alloy core 5 to slip off.

[0069] Please refer to Figure 1 and Figure 2 As shown in and, a strain clamp for an aluminum alloy core aluminum stranded wire provided by the present invention, a sealing outer cylinder 205 is provided on one side of the steel anchor ring body 201;

[0070] The sealing outer cylinder 205 is located outside the sleeve body 1, and absorbent cotton 9 is filled between the sealing outer cylinder 205 and the sleeve body 1;

[0071] A sealing ring 10 is welded together at one end of the sleeve body 1 and the outer layer compression tube 4 away from the steel anchor body 2 .

[0072] The space between the middle connecting portion 202 and the sleeve body 1 is filled with absorbent cotton 9 .

[0073] In the embodiment of the present invention, a sealing outer cylinder 205 is provided on one side of the steel anchor ring body 201. When the steel anchor body is inserted into the casing body 1, the sealing outer cylinder 205 is located on the outside of the casing body 1. In addition, absorbent cotton 9 is filled between the sealing outer cylinder 205 and the casing body 1. When the casing body 1 is pressed, the sealing outer cylinder 205 is also pressed on the outside of the casing body 1, and since the absorbent cotton 9 can be deformed, it does not cause any hindrance to the pressing process. Under the pressing action, the deformed sealing outer cylinder 205 is tightly attached to the outside of the casing body 1, and there is no gap between the two, and the absorbent cotton 9 is also filled between the two, so as to effectively improve the overall waterproof performance.

[0074] It should be noted that the sleeve body 1 and the outer layer compression tube 4 are welded together with a sealing ring 10 at one end away from the steel anchor body 2;

[0075] It should be noted that the surface of the steel anchor body 2 that abuts against the casing body 1 may be frosted. When the steel anchor body 2 is attached to the casing body 1, the rough surface can further improve the sealing performance of the two.

[0076] Furthermore, the sleeve body 1 itself is also subjected to rust and corrosion prevention treatment to increase its service life.

[0077] The rear end of the casing body 1 is provided with a sealing structure consisting of a steel anchor body 2 and a sealing outer cylinder 205, and the front end of the casing body 1 is provided with a sealing ring 10. At the same time, absorbent cotton 9 is filled between the sealing outer cylinder 205 and the casing body 1, and absorbent cotton 9 is filled between the middle connecting part 202 and the casing body 1. The synergistic effect of the front and rear two sealing structures, the filling of absorbent cotton 9 and the frosting treatment can effectively and significantly improve the overall waterproof performance.

[0078] It is worth mentioning that the absorbent cotton 9 can absorb moisture in the air to prevent the structural parts inside the sleeve body 1 from rusting.

[0079] It is worth mentioning that due to the different specifications and sizes of aluminum alloy core aluminum stranded wire, the specifications and sizes of the sealing ring 10 can be set according to actual needs. Therefore, it is only necessary to ensure that the distance between the inner wall of the sealing ring 10 and the outer skin of the aluminum alloy core aluminum stranded wire is less than the preset distance, for example, mm, which can effectively improve the sealing performance.

[0080] The sealing ring 10 has two functions:

[0081] First, the sealing performance of the sleeve body 1 and the outer layer crimping tube 4 is improved;

[0082] Secondly, tightening the outer layer crimping tube 4 can prevent the outer layer crimping tube 4 from falling out during the pressing or assembly process, which can effectively enhance the tightness between the outer layer crimping tube 4 and the sleeve body 1, and further improve the crimping and fixing effect of the aluminum alloy core aluminum stranded wire.

[0083] In the embodiment of the present invention, a sealing outer cylinder 205 is added, and absorbent cotton 9 is arranged between the sealing outer cylinder 205 and the casing body 1, and then the casing body 1 and the sealing outer cylinder 205 are pressed together, and the absorbent cotton 9 can further improve the overall waterproof performance. In addition, the casing body 1 and the end of the outer layer compression tube 4 away from the steel anchor body 2 are welded with a sealing ring 10, which can also further improve the overall sealing performance and prevent the outer layer compression tube 4 from falling out.

[0084] See also Figure 1 and Figure 2 The present invention provides a tension clamp for aluminum alloy core aluminum stranded wire, wherein the sleeve body 1, the outer layer compression tube 4 and the inner layer compression tube 3 are all made of aluminum or aluminum alloy.

[0085] It should be noted that the materials of the sleeve body 1, the outer layer crimping tube 4 and the inner layer crimping tube 3 are all aluminum or aluminum alloy, so that they have metal plasticity, allowing them to be deformed by mechanical pressing, thereby completing the crimping between the sleeve body 1 and the outer layer crimping tube 4 or the inner layer crimping tube 3 respectively.

[0086] See also Figure 1-Figure 4 The present invention provides a tension clamp for aluminum alloy core aluminum stranded wire, which also includes a drainage plate body 7 and a drainage clamp 8;

[0087] The guide plate body 7 is provided with a connecting through hole, and the sleeve body 1 passes through the connecting through hole;

[0088] The guide plate body 7 is fixed to the sleeve body 1 by welding.

[0089] It should be noted that the guide plate body 7 is provided with a connecting through hole, through which the sleeve body 1 passes. After the sleeve body 1 passes through the guide plate body 7, the front and rear sides of the guide plate body 7 are respectively welded and fixed to the sleeve body 1.

[0090] In actual use, the mechanical properties of the aluminum alloy core aluminum stranded wire body are transmitted to the steel anchor body 2 and then to the terminal through the inner layer crimping tube 3 and the sleeve body 1. The electrical properties of the aluminum alloy core aluminum stranded wire body are transmitted from the sleeve body 1 through the drainage plate body 7 to the drainage clamp 8.

[0091] See also Figure 1-Figure 4 The present invention provides a tension clamp for aluminum alloy core aluminum stranded wire, wherein one end of the drain plate body 7 close to the drain clamp 8 is provided with two first connecting plates arranged parallel to each other;

[0092] A U-shaped connecting groove is formed between the two first connecting plates;

[0093] The drainage wire clamp 8 is provided with a second connecting plate at one end close to the drainage plate body 7;

[0094] The second connecting plate is embedded in the U-shaped connecting groove, and the second connecting plate is fixedly connected to the first connecting plate constituting the U-shaped connecting groove by bolts.

[0095] In the embodiment of the present invention, two first connecting plates arranged parallel to each other are provided at one end of the drain plate body 7 close to the drain wire clamp 8, and a gap is provided between the two first connecting plates. A second connecting plate is provided at one end of the drain wire clamp 8 close to the drain plate body 7, and the second connecting plate can be inserted into the gap between the two first connecting plates, and the first connecting plate and the second connecting plate are fixed by two bolts. The connection method of clamping a second connecting plate with two first connecting plates can better achieve the fixation between the drain plate body 7 and the drain wire clamp 8, thereby effectively avoiding the problem of the second connecting plate on the drain wire clamp 8 being offset to the left or right or shaking. In addition, this structure is relatively simple, so the manufacturing cost is low.

[0096] It should be noted that when the electrical properties of the aluminum alloy core aluminum stranded wire body are transmitted from the sleeve body 1 through the drain plate body 7 , the electrical properties will be transferred from the first connecting plate to the second connecting plate, and finally transmitted to the drain wire clamp 8 .

[0097] See also Figure 1 and Figure 2 The present invention provides a tension clamp for aluminum alloy core aluminum stranded wire, wherein the outer sides of the steel anchor ring body 201 and the drainage clamp 8 are both provided with an insulating layer;

[0098] The insulating layer is made of rubber.

[0099] It should be noted that the outer sides of the steel anchor ring 201 and the drain wire clamp 8 are both provided with an insulating layer to prevent the risk of electric shock to the workers during installation. The material of the insulating layer includes but is not limited to rubber. The rubber material not only can insulate, but also has a good sense of comfort when gripping, has a low manufacturing cost, and improves the comfort of the workers at work, further improving the workers' work efficiency.

[0100] See also Figure 1 and Figure 2 The present invention provides a tension clamp for aluminum alloy core aluminum stranded wire, wherein the steel anchor ring body 201 is provided with a gripping portion 204 .

[0101] It should be noted that the steel anchor ring body 201 is an oblate ring structure, and a gripping portion 204 is provided on the steel anchor ring body 201. The gripping portion 204 is composed of a plurality of continuous concave grooves, which are adapted to the hands of workers and are convenient for workers to grip during assembly.

[0102] See also Figure 6 The present invention provides an assembly method for a tension clamp for an aluminum alloy core aluminum stranded wire, comprising:

[0103] Step 101: sleeve the inner layer crimping tube 3 onto the end connection portion 203 in the steel anchor body 2, wherein the sleeved portion is crimped by a hydraulic press.

[0104] Step 102: sleeve the sleeve body 1 and the outer layer crimping tube 4 onto the outside of the aluminum alloy core aluminum stranded wire body.

[0105] Step 103 , insert the aluminum alloy core 5 from which the outer skin of a preset outer layer peeling length has been stripped off in advance into the inner layer crimping tube 3 , and press the inner layer crimping tube 3 and the aluminum alloy core 5 together using a hydraulic press.

[0106] Step 104 , moving the sleeve body 1 and the outer crimping tube 4 , so that the sleeve body 1 is located outside the inner crimping tube 3 and the middle connecting portion 202 .

[0107] Step 105 , crimp the sleeve body 1 with the middle connecting part 202 , the sealing outer tube 205 , the inner crimping tube 3 and the outer crimping tube 4 in sequence to anchor the aluminum alloy core aluminum stranded wire body.

[0108] In the embodiment of the present invention, the inner layer compression tube 3 is completely sleeved over the end connection part 203 in the steel anchor body 2 before leaving the factory, and the sleeved part is crimped by a hydraulic press, and the two are pre-crimped into one in the factory;

[0109] First, the sleeve body 1 and the outer layer crimping tube 4 are inserted into the outside of the aluminum alloy core aluminum stranded wire body, and then the front end outer layer of the aluminum alloy core aluminum stranded wire body, i.e., the aluminum stranded wire 6, is stripped off a certain length to expose part of the aluminum alloy core 5;

[0110] Insert the aluminum alloy core 5 into the inner layer pressing tube 3, and use a hydraulic press to press the inner layer pressing tube 3 and the aluminum alloy core 5 together;

[0111] Move the sleeve body 1 and the outer layer crimping tube 4 so that the sleeve body 1 is located outside the inner layer crimping tube 3 and the middle connecting portion 202;

[0112] Finally, the sleeve body 1 is crimped with the middle connecting part 202, the sealing outer tube 205, the outer layer crimping tube 4 and other structures in sequence to anchor the aluminum alloy core aluminum stranded wire body.

[0113] The present invention adds an inner crimping tube 3 and an outer crimping tube 4 in the sleeve body 1. The sleeve body 1 is crimped with the end connection part 203 of the steel anchor body 2, the exposed aluminum alloy core 5, and the aluminum stranded wire 6 without the exposed aluminum alloy core 5 through the inner crimping tube 3 and the outer crimping tube 4, respectively, so as to effectively improve the tightness and protection of the sleeve body 1 to the aluminum alloy core aluminum stranded wire body. At the same time, crimping grooves of a U-shaped structure are provided on both the inner and outer sides of the outer crimping tube 4, which can effectively enhance the tightness between the outer crimping tube 4 and the sleeve body 1, and further improve the crimping and fixing effect of the aluminum alloy core aluminum stranded wire.

[0114] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0115] In the several embodiments provided in the present application, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0116] As described above, the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features thereof may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A tension clamp for aluminum alloy core aluminum stranded wire, characterized in that: It comprises a casing body (1), a steel anchor body (2), an inner layer press-fit pipe (3) and an outer layer press-fit pipe (4); The end of the steel anchor body (2) is inserted from one end of the sleeve body (1), and the other end of the sleeve body (1) is used to connect the aluminum alloy core aluminum stranded wire body; The inner layer compression tube (3) is arranged on the outside of the end of the steel anchor body (2) and on the outside of the aluminum alloy core (5) at the middle end of the aluminum alloy core aluminum stranded wire body; The outer layer compression tube (4) is arranged on the outer side of the aluminum alloy core aluminum stranded wire body; The outer wall of the outer layer crimping tube (4) is provided with a crimping groove; The inner layer compression tube (3) and the outer layer compression tube (4) are both arranged on the inner side of the sleeve body (1).

2. The tension clamp for aluminum alloy core aluminum stranded wire according to claim 1, characterized in that: The steel anchor body (2) comprises a steel anchor ring body (201), a middle connecting part (202) and an end connecting part (203) which are connected in sequence; The steel anchor ring (201) is located outside the casing body (1); The middle connection portion (202) and the end connection portion (203) are located inside the sleeve body (1); The diameter of the middle connecting portion (202) is greater than the diameter of the end connecting portion (203); The inner layer compression tube (3) is arranged on the outside of the end connection portion (203); The outer layer compression tube (4) is arranged on the outer side of the aluminum alloy core aluminum stranded wire body; A plurality of annular grooves are provided on the middle connecting portion (202) and the end connecting portion (203).

3. The tension clamp for aluminum alloy core aluminum stranded wire according to claim 2, characterized in that: A sealing outer cylinder (205) is provided on one side of the steel anchor ring body (201); The sealing outer cylinder (205) is located outside the sleeve body (1), and absorbent cotton (9) is filled between the sealing outer cylinder (205) and the sleeve body (1); A sealing ring (10) is welded together between the sleeve body (1) and the end of the outer layer compression tube (4) away from the steel anchor body (2).

4. The tension clamp for aluminum alloy core aluminum stranded wire according to claim 2, characterized in that: Water-absorbent cotton (9) is filled between the middle connecting portion (202) and the sleeve body (1).

5. The tension clamp for aluminum alloy core aluminum stranded wire according to claim 1, characterized in that: The sleeve body (1), the outer layer compression tube (4) and the inner layer compression tube (3) are all made of aluminum or aluminum alloy.

6. The tension clamp for aluminum alloy core aluminum stranded wire according to claim 2, characterized in that: It also includes a drainage plate body (7) and a drainage wire clamp (8); The guide plate body (7) is provided with a connecting through hole, and the sleeve body (1) passes through the connecting through hole; The guide plate body (7) is fixed to the sleeve body (1) by welding.

7. The tension clamp for aluminum alloy core aluminum stranded wire according to claim 6, characterized in that: Two first connecting plates arranged parallel to each other are provided at one end of the drainage plate body (7) close to the drainage wire clamp (8); A U-shaped connecting groove is formed between the two first connecting plates; A second connecting plate is provided at one end of the drainage wire clamp (8) close to the drainage plate body (7); The second connecting plate is embedded in the U-shaped connecting groove, and the second connecting plate is fixedly connected to the first connecting plate constituting the U-shaped connecting groove by bolts.

8. The tension clamp for aluminum alloy core aluminum stranded wire according to claim 6, characterized in that: The outer sides of the steel anchor ring body (201) and the drainage wire clamp (8) are both provided with an insulating layer; The insulating layer is made of rubber.

9. The tension clamp for aluminum alloy core aluminum stranded wire according to claim 2, characterized in that: The steel anchor ring body (201) is provided with a gripping portion (204).

10. An assembly method for a tension clamp for an aluminum alloy core aluminum stranded wire according to any one of claims 1 to 9, characterized in that: include: The inner layer compression tube (3) is sleeved onto the end connection portion (203) in the steel anchor body (2), wherein the sleeved portion is crimped by a hydraulic press; The sleeve body (1) and the outer layer crimping tube (4) are sleeved onto the outer side of the aluminum alloy core aluminum stranded wire body; Inserting the aluminum alloy core (5) from which the outer skin of a preset outer layer peeling length has been pre-stripped into the inner layer pressing tube (3), and pressing the inner layer pressing tube (3) and the aluminum alloy core (5) together using a hydraulic press; Moving the sleeve body (1) and the outer layer crimping tube (4) so ​​that the sleeve body (1) is located outside the inner layer crimping tube (3) and the middle connecting portion (202); The sleeve body (1) is sequentially crimped to the middle connecting portion (202), the sealing outer tube (205), the inner crimping tube (3) and the outer crimping tube (4) to anchor the aluminum alloy core aluminum stranded wire body.

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