Assembled conductor connection device for tension tower

Abstract

The present invention provides an assembled conductor connection device for a tension tower, which belongs to the technical field of high-voltage power transmission, and includes a connecting sleeve, a power grid steel anchor, two locking sleeves and an installation mechanism. One end of the connecting sleeve is sleeved on the outside of the steel core aluminum stranded wire, and notches extending along the axial direction are provided at both ends of the connecting sleeve. One end of the power grid steel anchor is inserted into the other end of the connecting sleeve, and the steel core of the steel core aluminum stranded wire is inserted into the power grid steel anchor. Two locking sleeves are respectively inserted into the two ends of the connecting sleeve, and a locking mechanism is provided in the locking sleeve. The present invention can facilitate the change of the diameter of the two ends of the connecting sleeve under the action of external force by providing the notch on the connecting sleeve, and also by providing the locking sleeve and providing the locking mechanism in the locking sleeve to drive the connecting sleeve to contract radially, so that the two ends of the connecting sleeve are respectively fixed to the steel core conductor and the power grid steel anchor, so as to realize the connection between the steel core aluminum stranded wire and the tension tower.

Description

Technical Field

[0001] The invention belongs to the technical field of high-voltage power transmission, and more specifically, relates to an assembled conductor connection device for a tension tower. Background Art

[0002] High-voltage power transmission is a method of transmitting power by using a transformer in a power plant to step up the voltage output by the generator. The reason for adopting this method of power transmission is that under the condition of the same power transmission, the higher the voltage, the smaller the current. In this way, high-voltage power transmission can reduce the current during transmission, thereby reducing the heat loss caused by the current and reducing the material cost of long-distance power transmission.

[0003] The conductors used in high-voltage power transmission are generally steel-core aluminum stranded wires, which are reinforced conductors with single-layer or multi-layer aluminum strands twisted on the outside of galvanized steel core wires. They have the characteristics of simple structure, convenient installation and maintenance, low line cost, large transmission capacity, and are conducive to laying across rivers and valleys and other special geographical conditions. They have good electrical conductivity and sufficient mechanical strength, high tensile strength, and can be enlarged in tower distance.

[0004] However, in the actual construction of high-voltage overhead transmission lines, due to the long transmission distance, it is usually necessary to use straight towers and tension towers to support the conductors. At present, the commonly used conductor tension connection method between the conductor and the tension tower is to use a hydraulic press to hydraulically crimp the conductor tension clamp. However, it is difficult to operate a hydraulic press at high altitude, which has a high safety risk. In addition, due to the influence of high voltage, high current and high-altitude working environment, the quality of conductor crimping is difficult to guarantee, and conductor breakage occurs from time to time, thus affecting the construction efficiency of high-voltage overhead lines. Summary of the invention

[0005] The object of the present invention is to provide an assembled conductor connection device for a tension tower, so as to solve the problem of difficulty in high-altitude construction work in the existing connection method between the tension tower and the steel-core aluminum stranded wire.

[0006] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is: to provide an assembled wire connection device for a tension tower, comprising a connecting sleeve, a power grid steel anchor, and two locking sleeves, both ends of the connecting sleeve are provided with notches extending along the axial direction of the connecting sleeve and one end is sleeved on the outside of the steel-core aluminum stranded wire; one end of the power grid steel anchor is inserted into the other end of the connecting sleeve, and the steel core of the steel-core aluminum stranded wire is inserted into the power grid steel anchor; two locking sleeves are respectively inserted into the two ends of the connecting sleeve, and a locking mechanism is provided in the locking sleeve, the locking mechanism abuts against the connecting sleeve, the connecting sleeve moves into the locking sleeve, and the locking mechanism drives the connecting sleeve to contract radially, so that one end of the connecting sleeve is fixed on the steel-core aluminum stranded wire, and the other end of the connecting sleeve is fixed on the power grid steel anchor.

[0007] In a possible implementation, the inner hole of the locking sleeve is a reducing hole, which includes a large diameter section having the same diameter as the outer diameter of the connecting sleeve, a small diameter section having the same diameter as the outer diameter of the steel core aluminum stranded wire, and a reducing section connected between the large diameter section and the small diameter section.

[0008] In a possible implementation, guide members are provided at both ends of the connecting sleeve, and the guide members are arranged with diameters from large to small from an end close to the connecting sleeve to an end away from the connecting sleeve; the locking mechanism includes a reducing section of the inner hole of the locking sleeve, the reducing section is arranged between the large diameter section and the small diameter section, the reducing section is conical, and the reducing section is adapted to the guide member, and the reducing section can guide the guide member to slide along the side wall of the reducing section so as to radially contract the two ends of the connecting sleeve.

[0009] In a possible implementation, the inner hole of the locking sleeve is a reducing hole, including a locking section, a passing section and a reducing section, the locking mechanism includes the locking section, the diameter of the passing section is the same as the outer diameter of the steel core aluminum stranded wire, the diameter of one end of the locking section is the same as the diameter of the connecting sleeve, and the diameter of the other end of the locking section is smaller than the diameter of the connecting sleeve, and as the connecting sleeve is inserted into the locking sleeve, the locking section can drive the end of the connecting sleeve to contract radially; a guide is provided at the end of the connecting sleeve, and the guide is inserted into the reducing section.

[0010] In a possible implementation, the steel anchor includes a fixing rod and a fixing ring, wherein the fixing ring is fixedly disposed at one end of the fixing rod, and the steel core of the steel-core aluminum stranded wire is inserted into the fixing rod; relative to the end provided with the fixing ring, the other end of the fixing rod is provided with a reducing groove, and the reducing groove partially penetrates the fixing rod along the axial direction of the fixing rod, so that the diameter of the fixing rod can be reduced under the action of external force to clamp the steel core inserted in the fixing rod.

[0011] In a possible implementation, it also includes an installation mechanism, which includes a first thread provided on the outer wall of the connecting sleeve and a second thread provided on the inner wall of the locking sleeve, and the first thread is adapted to the second thread so that the locking sleeve can be screwed onto the connecting sleeve.

[0012] In a possible implementation, a connecting ring is provided at one end of the two locking sleeves that is close to each other. The connecting ring is provided with a connecting hole, and the bolt is screwed to the two connecting rings through the connecting hole.

[0013] In a possible implementation, a first screw plate is provided on the outer wall of the connecting sleeve, the cross-section of the first screw plate is a regular hexagon, and the first screw plate is arranged in the middle part of the connecting sleeve; a second screw plate is provided on the outer wall of the locking sleeve, and the cross-section of the second screw plate is a regular hexagon.

[0014] In a possible implementation, it also includes a mounting mechanism, which includes a connecting ring and a bolt. The connecting ring is arranged at one end of the locking sleeve, and a connecting hole is provided on the connecting ring. The bolt is screwed to the two connecting rings through the connecting hole.

[0015] In a possible implementation, a plurality of first protrusions are provided on the inner wall of the connecting sleeve, and the first protrusions are evenly arranged; a plurality of second protrusions are provided on the inner wall of the power grid steel anchor, and the second protrusions are evenly arranged.

[0016] The beneficial effect of the assembled wire connection device for the tension tower provided by the present invention is that: compared with the prior art, the present invention can facilitate the radial contraction of the two ends of the connecting sleeve under the action of external force by setting a notch on the connecting sleeve, and by setting a locking sleeve and a locking mechanism in the locking sleeve, the locking mechanism abuts against the connecting sleeve, and the connecting sleeve moves into the locking sleeve, and the locking mechanism drives the connecting sleeve to contract radially. Because the steel core aluminum stranded wire is inserted at one end of the connecting sleeve and the power grid steel anchor is inserted at the other end of the connecting sleeve, when the two ends of the connecting sleeve contract radially, one end of the connecting sleeve and the steel core aluminum stranded wire are fixed to each other, and the other end of the connecting sleeve is fixed to the power grid steel anchor, thereby facilitating the connection between the steel core aluminum stranded wire and the tension tower. The technical solution of the present application can realize the connection between the steel core aluminum stranded wire and the tension tower without performing night pressure operations, reduces the difficulty of high-altitude operations, improves the connection quality of the wires, and can effectively prevent the occurrence of dangerous accidents. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, 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.

[0018] Figure 1 A schematic structural diagram of an assembled conductor connection device for a tension tower provided in Embodiment 1 of the present invention;

[0019] Figure 2 A schematic cross-sectional view of an assembled conductor connection device for a tension tower provided in the first embodiment of the present invention;

[0020] Figure 3for Figure 2 A magnified view of part A;

[0021] Figure 4 This is a structural schematic diagram of a connecting sleeve according to an embodiment of the present invention;

[0022] Figure 5 A schematic structural diagram of a locking sleeve provided in Embodiment 1 of the present invention;

[0023] Figure 6 A schematic diagram of the structure of a power grid steel anchor provided in Embodiment 1 of the present invention;

[0024] Figure 7 A schematic diagram of the structure of a variable diameter section is provided for an embodiment of the present invention;

[0025] Figure 8 A schematic cross-sectional view of an assembled conductor connection device for a tension tower provided in the second embodiment of the present invention;

[0026] Fig. 9 This is a schematic cross-sectional structure diagram of an assembled conductor connection device for a tension tower provided in Embodiment 3 of the present invention.

[0027] Among them, the reference numerals in the figures are as follows:

[0028] 1. Connecting sleeve; 2. Locking sleeve; 3. Power grid steel anchor; 4. Steel core aluminum stranded wire;

[0029] 101, notch; 102, first screw plate; 103, first protrusion; 104, guide member;

[0030] 201, second screw plate; 202, connecting ring; 203, bolt; 204, connecting hole; 205, reducing section; 206, filling glue; 207, baffle; 208, film;

[0031] 301, fixing rod; 302, fixing ring; 303, reducing groove; 304, second protrusion. DETAILED DESCRIPTION

[0032] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0033] It should be further explained that the drawings and implementation modes of the present invention mainly describe the concept of the present invention. On the basis of this concept, the specific forms and settings of some connection relationships, positional relationships, power mechanisms, power supply systems, hydraulic systems and control systems may not be fully described. However, on the premise that those skilled in the art understand the concept of the present invention, those skilled in the art can implement the above-mentioned specific forms and settings in a well-known manner.

[0034] When an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or indirectly connected to the other element.

[0035] The directions or positional relationships indicated by terms such as “length”, “width”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside” and “outside” are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the present invention.

[0036] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "multiple" means two or more, and "several" means one or more, unless otherwise clearly and specifically defined.

[0037] The assembled wire connection device for the tension tower provided by the present invention is now described.

[0038] See also Figure 1 and Figure 2 The invention discloses an assembled conductor connection device for a tension tower, comprising a connecting sleeve 1, both ends of which are provided with a notch 101 extending axially along the connecting sleeve 1, and one end is sleeved on the outside of the steel-core aluminum stranded wire; one end of a power grid steel anchor is inserted into the other end of the connecting sleeve 1, and the steel core of the steel-core aluminum stranded wire is inserted into the power grid steel anchor, and two locking sleeves 2 are respectively inserted into the two ends of the connecting sleeve 1, and a locking mechanism is provided in the locking sleeve 2, and the locking mechanism abuts against the connecting sleeve 1, and the connecting sleeve 1 moves into the locking sleeve 2, and the locking mechanism drives the connecting sleeve 1 to contract radially, so that one end of the connecting sleeve 1 is fixed on the steel-core aluminum stranded wire, and the other end of the connecting sleeve 1 is fixed on the power grid steel anchor.

[0039] The beneficial effects of the assembled wire connection device for the tension tower provided in the present embodiment are as follows: the present embodiment provides that by providing the notch 101 on the connecting sleeve 1, the two ends of the connecting sleeve 1 can be easily contracted radially under the action of external force, and by providing the locking sleeve 2 and providing a locking mechanism in the locking sleeve 2, the locking mechanism abuts against the connecting sleeve 1, the connecting sleeve 1 moves into the locking sleeve 2, and the locking mechanism drives the connecting sleeve 1 to contract radially. Because the steel core aluminum stranded wire is inserted at one end of the connecting sleeve 1 and the power grid steel anchor is inserted at the other end of the connecting sleeve 1, when the two ends of the connecting sleeve 1 contract radially, one end of the connecting sleeve 1 and the steel core aluminum stranded wire are fixed to each other, and the other end of the connecting sleeve 1 and the power grid steel anchor are fixed, thereby facilitating the connection between the steel core aluminum stranded wire and the tension tower. The technical solution of the present application can realize the connection between the steel core aluminum stranded wire and the tension tower without performing night pressure operation, which reduces the difficulty of high-altitude operation, improves the connection quality of the wire, and can effectively prevent the occurrence of dangerous accidents.

[0040] Embodiment 1

[0041] Based on the above design concept, the inner hole of the locking sleeve 22 of the present invention is a variable diameter hole, including a large diameter section with the same diameter as the outer diameter of the connecting sleeve 1, and a small diameter section with the same diameter as the outer diameter of the steel core aluminum stranded wire. In actual use, the steel core aluminum stranded wire 4 needs to pass through the locking sleeve 22, and the side wall of the small diameter section of the inner hole of the locking sleeve 2 needs to abut against the side wall of the steel core aluminum stranded wire 4.

[0042] like Figure 2 and Figure 3 As shown, guide members 104 are provided at both ends of the connecting sleeve 1. The guide members 104 are tapered, and the diameters of the guide members 104 are arranged from large to small from one end close to the connecting sleeve 1 to one end far away from the connecting sleeve 1.

[0043] Specifically, the locking mechanism includes a reducing section 205 of the inner hole of the locking sleeve 2, the reducing section 205 is arranged between the large diameter section and the small diameter section, the reducing section 205 is tapered, and the reducing section 205 is adapted to the guide member 104. When the connecting sleeve 1 is inserted into the locking sleeve 2, the side wall of the guide member 104 first abuts against the side wall of the reducing section 205, and as the insertion length continues to increase, the reducing section 205 can guide the guide member 104 to slide along the side wall of the reducing section 205, so that the two ends of the connecting sleeve 1 contract radially, thereby fixing one end of the connecting sleeve 1 to the steel core aluminum stranded wire 4, and fixing the other end of the connecting sleeve 1 to the power grid steel anchor 3.

[0044] As a preferred solution, Figure 6As shown, the steel anchor includes a fixing rod 301 and a fixing ring 302. The fixing ring 302 is fixedly arranged at one end of the fixing rod 301, and the steel core of the steel core aluminum stranded wire is inserted into the fixing rod 301. A diameter reduction groove 303 is arranged at the other end of the fixing rod 301 relative to the end provided with the fixing ring 302, and the diameter reduction groove 303 penetrates a part of the fixing rod 301 along the axial direction of the fixing rod 301.

[0045] When the locking sleeve 2 drives the two ends of the connecting sleeve 1 to contract radially, the connecting sleeve 1 applies pressure to the fixing rod 301, thereby driving the fixing rod 301 to reduce its diameter, so as to clamp the steel core inserted in the fixing rod 301. It is worth noting that in order to facilitate the reduction of the diameters of the connecting sleeve 1 and the fixing rod 301, the length of the fixing rod 301 inserted into the connecting sleeve 1 is smaller than the length of the reducing groove 303 along the axial direction of the fixing rod 301.

[0046] like Figure 7 As shown, a baffle 207 and a filling glue 206 are arranged in the diameter-reducing section, and the baffle 207, the filling glue 206 and the side wall of the diameter-reducing section enclose an accommodating cavity, in which the filling glue 206 is arranged. The baffle 207 is arranged along the axial direction of the locking sleeve 2, and the filling glue 206 is arranged along the radial direction of the locking sleeve 2.

[0047] When the guide pierces the filling glue 206 and enters the diameter-reducing section and abuts against the side wall of the diameter-reducing section, a first gap is provided between the top of the connecting sleeve 1 and the baffle 207, and a second gap is provided between the guide and the baffle 207. The first gap is connected to the inner hole of the connecting sleeve 1, and the guide squeezes the filling glue 206 through the first gap and flows into between the connecting sleeve 1 and the steel-core aluminum stranded wire. The setting of the second gap ensures that the baffle 207 will not hinder the guide, so that the top of the connecting sleeve 1 has a tendency to shrink in the radial direction.

[0048] Combination Figure 4 and Figure 5 As shown, a mounting mechanism is provided between the connecting sleeve 1 and the locking sleeve 2, and the mounting mechanism includes a first thread provided on the outer wall of the connecting sleeve and a second thread provided on the inner wall of the locking sleeve 2. The first thread is adapted to the second thread so that the locking sleeve 2 can be screwed onto the connecting sleeve 1, thereby fixing the connecting sleeve 1 and the locking sleeve 2 to each other.

[0049] In addition, the mutual cooperation between the first thread and the second thread can also facilitate the insertion of the connecting sleeve 1 into the locking sleeve 2, and transform the locking that requires axial force into that completed by twisting between the connecting sleeve 1 and the locking sleeve 2, which is more convenient to use.

[0050] In this embodiment, a connecting ring 202 is provided at one end of the two locking sleeves 2 that is close to each other, and a connecting hole 204 is provided on the connecting ring 202. Bolts 203 are screwed on the two connecting rings 202 through the connecting holes 204. Since the two ends of the connecting sleeve 1 are respectively inserted into the two locking sleeves 2 in opposite directions of twisting, the connecting sleeve 1 is also twisted in opposite directions when it is pulled out of the locking sleeve 2. The two connecting rings are connected together by the bolts 203, and the two locking sleeves 2 can only be twisted in the same direction. Since the twisting of the two locking sleeves 2 will interfere with each other, loosening between the locking sleeve 2 and the connecting sleeve 1 is prevented.

[0051] In order to facilitate the pivoting between the connecting sleeve 1 and the locking sleeve 2, a first screw plate 102 is provided on the outer wall of the connecting sleeve 1, and the cross section of the first screw plate 102 is a regular hexagon, so that it can be tightened by various wrenches. Preferably, in order to prevent the first screw plate 102 from interfering with the locking sleeve 2, the first screw plate 102 is provided in the middle of the connecting sleeve 1. A second screw plate 201 is provided on the outer wall of the locking sleeve 2, and the cross section of the second screw plate 201 is a regular hexagon.

[0052] Finally, a plurality of first protrusions 103 are arranged evenly on the inner wall of the connecting sleeve 1, and a plurality of second protrusions 304 are arranged evenly on the inner wall of the power grid steel anchor 3. The arrangement of the first protrusions 103 and the second protrusions 304 can increase friction.

[0053] Embodiment 2

[0054] In this embodiment, Figure 8 As shown, the inner hole of the locking sleeve 2 is a variable diameter hole, including a locking section, a passing section and a variable diameter section, and the passing section has the same outer diameter as the steel core aluminum stranded wire. In actual use, the steel core aluminum stranded wire 4 needs to pass through the locking sleeve 2, and the side wall of the passing section of the inner hole of the locking sleeve 2 needs to abut against the side wall of the steel core aluminum stranded wire 4.

[0055] The locking mechanism includes a locking section, one end of which has the same diameter as the connecting sleeve 1, and the other end of which has a smaller diameter than the connecting sleeve 1. As the connecting sleeve 1 is inserted into the locking sleeve 2, the locking section can drive the diameter of the end of the connecting sleeve 1 to contract radially, thereby fixing one end of the connecting sleeve 1 to the steel core aluminum stranded wire 4 and fixing the other end of the connecting sleeve 1 to the power grid steel anchor 3. A guide is provided at the end of the connecting sleeve 1, and after the connecting sleeve 1 is fixed to the steel core aluminum stranded wire, the guide is inserted into the diameter reducing section.

[0056] As a preferred solution, Figure 6As shown, the steel anchor includes a fixing rod 301 and a fixing ring 302. The fixing ring 302 is fixedly arranged at one end of the fixing rod 301, and the steel core of the steel core aluminum stranded wire is inserted into the fixing rod 301. A diameter reduction groove 303 is arranged at the other end of the fixing rod 301 relative to the end provided with the fixing ring 302, and the diameter reduction groove 303 penetrates a part of the fixing rod 301 along the axial direction of the fixing rod 301.

[0057] When the locking sleeve 2 drives the two ends of the connecting sleeve 1 to contract radially, the connecting sleeve 1 applies pressure to the fixing rod 301, thereby driving the fixing rod 301 to reduce its diameter, so as to clamp the steel core inserted in the fixing rod 301. It is worth noting that in order to facilitate the reduction of the diameters of the connecting sleeve 1 and the fixing rod 301, the length of the fixing rod 301 inserted into the connecting sleeve 1 is smaller than the length of the diameter reduction groove 303 along the axial direction of the fixing rod 301.

[0058] like Figure 7 As shown, a baffle 207 and a filling glue 206 are arranged in the diameter-reducing section, and the baffle 207, the filling glue 206 and the side wall of the diameter-reducing section enclose an accommodating cavity, in which the filling glue 206 is arranged. The baffle 207 is arranged along the axial direction of the locking sleeve 2, and the filling glue 206 is arranged along the radial direction of the locking sleeve 2.

[0059] When the guide pierces the filling glue 206 and enters the diameter-reducing section and abuts against the side wall of the diameter-reducing section, a first gap is provided between the top of the connecting sleeve 1 and the baffle 207, and a second gap is provided between the guide and the baffle 207. The first gap is connected to the inner hole of the connecting sleeve 1, and the guide squeezes the filling glue 206 through the first gap and flows into between the connecting sleeve 1 and the steel-core aluminum stranded wire. The setting of the second gap ensures that the baffle 207 will not hinder the guide, so that the top of the connecting sleeve 1 has a tendency to shrink in the radial direction.

[0060] Combination Figure 4 and Figure 5 As shown, a mounting mechanism is provided between the connecting sleeve 1 and the locking sleeve 2, and the mounting mechanism includes a first thread provided on the outer wall of the connecting sleeve and a second thread provided on the inner wall of the locking sleeve 2. The first thread is adapted to the second thread so that the locking sleeve 2 can be screwed onto the connecting sleeve 1, thereby fixing the connecting sleeve 1 and the locking sleeve 2 to each other.

[0061] In addition, the mutual cooperation between the first thread and the second thread can also facilitate the insertion of the connecting sleeve 1 into the locking sleeve 2, and transform the locking that requires axial force into that completed by twisting between the connecting sleeve 1 and the locking sleeve 2, which is more convenient to use.

[0062] In this embodiment, a connecting ring 202 is provided at one end of the two locking sleeves 2 that is close to each other, and a connecting hole 204 is provided on the connecting ring 202. Bolts 203 are screwed on the two connecting rings 202 through the connecting holes 204. Since the two ends of the connecting sleeve 1 are respectively inserted into the two locking sleeves 2 in opposite directions of twisting, the connecting sleeve 1 is also twisted in opposite directions when it is pulled out of the locking sleeve 2. The two connecting rings are connected together by the bolts 203, and the two locking sleeves 2 can only be twisted in the same direction. Since the twisting of the two locking sleeves 2 will interfere with each other, loosening between the locking sleeve 2 and the connecting sleeve 1 is prevented.

[0063] In order to facilitate the pivoting between the connecting sleeve 1 and the locking sleeve 2, a first screw plate 102 is provided on the outer wall of the connecting sleeve 1, and the cross section of the first screw plate 102 is a regular hexagon, so that it can be tightened by various wrenches. Preferably, in order to prevent the first screw plate 102 from interfering with the locking sleeve 2, the first screw plate 102 is provided in the middle of the connecting sleeve 1. A second screw plate 201 is provided on the outer wall of the locking sleeve 2, and the cross section of the second screw plate 201 is a regular hexagon.

[0064] Finally, a plurality of first protrusions 103 are arranged evenly on the inner wall of the connecting sleeve 1, and a plurality of second protrusions 304 are arranged evenly on the inner wall of the power grid steel anchor 3. The arrangement of the first protrusions 103 and the second protrusions 304 can increase friction.

[0065] Embodiment 3

[0066] The inner hole of the locking sleeve 2 of this embodiment is a variable diameter hole, including a large diameter section having the same diameter as the outer diameter of the connecting sleeve 1, and a small diameter section having the same diameter as the outer diameter of the steel core aluminum stranded wire. In actual use, the steel core aluminum stranded wire 4 needs to pass through the locking sleeve 2, and the side wall of the small diameter section of the inner hole of the locking sleeve 2 needs to abut against the side wall of the steel core aluminum stranded wire 4.

[0067] like Figure 2 and Figure 3 As shown, guide members 104 are provided at both ends of the connecting sleeve 1. The guide members 104 are tapered, and the diameters of the guide members 104 are arranged from large to small from one end close to the connecting sleeve 1 to one end far away from the connecting sleeve 1.

[0068] Specifically, the locking mechanism includes a reducing section 205 of the inner hole of the locking sleeve 2, the reducing section 205 is arranged between the large diameter section and the small diameter section, the reducing section 205 is tapered, and the reducing section 205 is adapted to the guide member 104. When the connecting sleeve 1 is inserted into the locking sleeve 2, the side wall of the guide member 104 first abuts against the side wall of the reducing section 205, and as the insertion length continues to increase, the reducing section 205 can guide the guide member 104 to slide along the side wall of the reducing section 205, so that the two ends of the connecting sleeve 1 contract radially, thereby fixing one end of the connecting sleeve 1 to the steel core aluminum stranded wire 4, and fixing the other end of the connecting sleeve 1 to the power grid steel anchor 3.

[0069] As a preferred solution, Figure 6 As shown, the steel anchor includes a fixing rod 301 and a fixing ring 302. The fixing ring 302 is fixedly arranged at one end of the fixing rod 301, and the steel core of the steel core aluminum stranded wire is inserted into the fixing rod 301. A diameter reduction groove 303 is arranged at the other end of the fixing rod 301 relative to the end provided with the fixing ring 302, and the diameter reduction groove 303 penetrates a part of the fixing rod 301 along the axial direction of the fixing rod 301.

[0070] When the locking sleeve 2 drives the two ends of the connecting sleeve 1 to contract radially, the connecting sleeve 1 applies pressure to the fixing rod 301, thereby driving the fixing rod 301 to reduce its diameter, so as to clamp the steel core inserted in the fixing rod 301. It is worth noting that in order to facilitate the reduction of the diameters of the connecting sleeve 1 and the fixing rod 301, the length of the fixing rod 301 inserted into the connecting sleeve 1 is smaller than the length of the diameter reduction groove 303 along the axial direction of the fixing rod 301.

[0071] like Figure 7 As shown, a baffle 207 and a filling glue 206 are arranged in the diameter-reducing section, and the baffle 207, the filling glue 206 and the side wall of the diameter-reducing section enclose an accommodating cavity, in which the filling glue 206 is arranged. The baffle 207 is arranged along the axial direction of the locking sleeve 2, and the filling glue 206 is arranged along the radial direction of the locking sleeve 2.

[0072] When the guide pierces the filling glue 206 and enters the diameter-reducing section and abuts against the side wall of the diameter-reducing section, a first gap is provided between the top of the connecting sleeve 1 and the baffle 207, and a second gap is provided between the guide and the baffle 207. The first gap is connected to the inner hole of the connecting sleeve 1, and the guide squeezes the filling glue 206 through the first gap and flows into between the connecting sleeve 1 and the steel-core aluminum stranded wire. The setting of the second gap ensures that the baffle 207 will not hinder the guide, so that the top of the connecting sleeve 1 has a tendency to shrink in the radial direction.

[0073] like Fig. 9As shown, a mounting mechanism is provided between the connecting sleeve 1 and the locking sleeve 2, and the mounting mechanism includes a connecting ring 202 and a bolt 203. The connecting ring 202 is provided at one end of the locking sleeve 2, and a connecting hole 204 is provided on the connecting ring 202. The bolt 203 is screwed on the two connecting rings 202 through the connecting hole 204. The cooperation between the connecting ring 202 and the bolt 203 enables the two locking sleeves 2 to be sleeved on both ends of the connecting sleeve 1 and cannot fall off. On the other hand, the distance between the two locking sleeves 2 can be shortened by twisting the bolt 203, thereby forcing the connecting sleeve 1 to be inserted into the locking sleeve 2, and the locking that needs to be completed by axial force is converted to that completed by twisting the bolt 203, which is more convenient to use.

[0074] Finally, a plurality of first protrusions 103 are arranged evenly on the inner wall of the connecting sleeve 1, and a plurality of second protrusions 304 are arranged evenly on the inner wall of the power grid steel anchor 3. The arrangement of the first protrusions 103 and the second protrusions 304 can increase friction.

[0075] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An assembled wire connection device for a tension tower, characterized in that: include: A connecting sleeve (1), both ends of which are provided with notches (101) extending along the axial direction of the connecting sleeve (1), and one end of which is sleeved on the outside of the steel core aluminum stranded wire; A power grid steel anchor (3), one end of which is inserted into the other end of the connecting sleeve (1), and the steel core of the steel core aluminum stranded wire is inserted into the power grid steel anchor; Two locking sleeves (2) are respectively inserted at the two ends of the connecting sleeve (1); a locking mechanism is provided in the locking sleeve (2); the locking mechanism abuts against the connecting sleeve (1); the connecting sleeve moves into the locking sleeve; the locking mechanism can drive the connecting sleeve (1) to contract radially, so that one end of the connecting sleeve (1) is fixed to the steel core aluminum stranded wire, and the other end of the connecting sleeve (1) is fixed to the power grid steel anchor (3); The inner hole of the locking sleeve (2) is a variable diameter hole, the variable diameter hole comprising a large diameter section having the same diameter as the outer diameter of the connecting sleeve (1), a small diameter section having the same diameter as the outer diameter of the steel core aluminum stranded wire, and a variable diameter section connected between the large diameter section and the small diameter section; Guide members (104) are provided at both ends of the connecting sleeve (1), and the diameter of the guide members (104) is arranged from large to small from an end close to the connecting sleeve (1) to an end far from the connecting sleeve (1); The locking mechanism comprises a diameter-reducing section (205) of the inner hole of the locking sleeve (2), and the diameter-reducing section (205) is adapted to the guide member (104), and the diameter-reducing section (205) can guide the guide member (104) to slide along the side wall of the diameter-reducing section (205), so that the two ends of the connecting sleeve (1) are contracted in the radial direction; A baffle (207) and a film (208) are provided in the diameter-changing section, and the baffle (207), the film (208) and the side wall of the diameter-changing section enclose an accommodating cavity, and a filling glue (206) is provided in the accommodating cavity; the baffle (207) is arranged along the axial direction of the locking sleeve (2), and the film (208) is arranged along the radial direction of the locking sleeve (2); when the guide member abuts against the diameter-changing section, a first gap is provided between the top end of the connecting sleeve (1) and the baffle (207), and a second gap is provided between the guide member and the baffle, and the first gap is connected to the inner hole of the connecting sleeve, and the guide member squeezes the filling glue to flow through the first gap into between the connecting sleeve and the steel-core aluminum stranded wire (4).

2. The assembled conductor connection device for a tension tower according to claim 1, characterized in that: The steel anchor comprises a fixing rod (301) and a fixing ring (302), wherein the fixing ring (302) is fixedly arranged at one end of the fixing rod (301), and the steel core of the steel-core aluminum stranded wire is inserted into the fixing rod (301); Relative to the end provided with the fixing ring (302), the other end of the fixing rod (301) is provided with a diameter-reducing groove (303), and the diameter-reducing groove (303) penetrates a portion of the fixing rod (301) along the axial direction of the fixing rod (301), so that the diameter of the fixing rod (301) can be reduced under the action of an external force to clamp the steel core inserted in the fixing rod (301).

3. The assembled conductor connection device for a tension tower according to claim 1, characterized in that: It also includes a mounting mechanism, the mounting mechanism comprising a first thread provided on the outer wall of the connecting sleeve and a second thread provided on the inner wall of the locking sleeve (2), the first thread being compatible with the second thread so that the locking sleeve (2) can be screwed onto the connecting sleeve (1).

4. The assembled conductor connection device for a tension tower according to claim 3, characterized in that: A connecting ring (202) is provided at one end of the two locking sleeves (2) that is close to each other. A connecting hole (204) is provided on the connecting ring (202). A bolt (203) is screwed onto the two connecting rings (202) through the connecting hole (204).

5. The assembled conductor connection device for a tension tower according to claim 4, characterized in that: A first screw plate (102) is provided on the outer wall of the connecting sleeve (1), the cross section of the first screw plate (102) is a regular hexagon, and the first screw plate (102) is arranged in the middle of the connecting sleeve (1); a second screw plate (201) is provided on the outer wall of the locking sleeve (2), the cross section of the second screw plate (201) is a regular hexagon.

6. The assembled conductor connection device for a tension tower according to claim 1, characterized in that: It also comprises a mounting mechanism, the mounting mechanism comprising a connecting ring (202) and a bolt (203), the connecting ring (202) being arranged at one end of the locking sleeve (2), the connecting ring (202) being provided with a connecting hole (204), and the bolt (203) being screwed onto the two connecting rings (202) through the connecting hole (204).

Images