Extensible traction plate for high-voltage transmission line construction

Abstract

The invention relates to the technical field of power electronic components in an intelligent power grid, and discloses an extensible traction plate for high-voltage transmission line construction, the traction plate is provided with n traction plate combination layers, n is a positive integer greater than or equal to 2, all the traction plate combination layers are sequentially arranged from top to bottom, n traction plate main bodies which are distributed left and right are arranged in the nth traction plate combination layer, and one traction plate main body of the upper traction plate combination layer is located over the two traction plate main bodies of the lower traction plate combination layer; one traction plate main body of the upper traction plate combination layer is in pivot rotation connection with the two traction plate main bodies of the corresponding lower traction plate combination layer, and at least three fixing joints are arranged on the lower side wall of each traction plate main body at intervals; the traction device has the beneficial effects of being capable of expanding the traction number, convenient to assemble, convenient to construct and maintain, low in cost and the like.

Description

Technical Field

[0001] The present invention belongs to the technical field of power electronic components in smart grids, and more specifically relates to a tension stringing construction tool for high-voltage transmission lines. In particular, the present invention discloses an expandable traction plate for high-voltage transmission line construction. Background Art

[0002] The traction walking plate is an essential tool for the tension pay-out construction of multi-split overhead conductors in high-voltage transmission lines. Its principle is to connect the conductor to be laid at a fixed distance (equal to the spacing between the corresponding pay-out pulley wheels) to the tail of the traction walking plate, and to pull the walking plate forward through a traction wire rope. When the traction walking plate passes the pay-out pulley on the base tower, each pulled conductor can fall into the corresponding pay-out pulley wheel groove.

[0003] In the prior art, CN108390316A discloses a walking plate anti-twisting device for auxiliary power construction, including a traction plate, a positioning plate fixedly installed on the left side of the traction plate, a guide plate fixedly installed on the side of the traction plate away from the positioning plate, the number of the guide plates is two, and the two guide plates are evenly distributed on the side of the traction plate away from the positioning plate, a groove is provided on the right side of the front face of the traction plate, the number of the grooves is two, and the two grooves are evenly distributed on the right side of the front face of the traction plate, a connecting rod is movably sleeved inside the groove, and the end of the connecting rod away from the traction plate is movably sleeved with the walking plate, a connecting groove is provided on the left side of the walking plate, the number of the connecting grooves is two, and the two connecting grooves are evenly distributed on the left side of the walking plate, one end of the connecting rod is movably sleeved with the left side of the walking plate through the connecting groove, and the right side of the walking plate is fixedly installed with a connecting plate The outer surface of the positioning rod is movably connected to the inner wall of the guide plate, and the inner wall of the guide plate and the connecting rod are connected with the fixing rod at the bottom.

[0004] The above-mentioned existing technology has the following defects: the connecting plate that can be used for pulling cables cannot be expanded. When more cables need to be pulled, multiple pulling or multiple sets of pulling plates need to be carried, which has low construction efficiency; once damaged, the walking plate needs to be replaced as a whole, and the cost of replacement and maintenance is high. Summary of the Invention

[0005] In order to solve the above problems, the purpose of the present invention is to provide an expandable traction plate for high-voltage transmission line construction, which is achieved by the following technical solutions.

[0006] A scalable traction plate for high-voltage transmission line construction, comprising n traction plate assembly layers, where n is a positive integer greater than or equal to 2, and all traction plate assembly layers are arranged in sequence from top to bottom. The nth traction plate assembly layer comprises n traction plate bodies distributed left and right, wherein one traction plate body of an upper traction plate assembly layer is located directly above two traction plate bodies of a lower traction plate assembly layer, and one traction plate body of an upper traction plate assembly layer is pivotally connected to the corresponding two traction plate bodies of the lower traction plate assembly layer, and two adjacent traction plate bodies of the same traction plate assembly layer are placed side by side, and the lower side wall of each traction plate body is provided with at least three fixed joints at intervals.

[0007] In the expandable traction plate for high-voltage transmission line construction described above, the leftmost fixed joint and the rightmost fixed joint of the lowest traction plate assembly layer are each hinged with a hinged tail hammer.

[0008] The above-mentioned expandable traction plate for high-voltage transmission line construction has a connecting component provided in the upper middle part of the traction plate body, a fixed joint provided on the leftmost side of the lower side wall of the traction plate body, and a fixed joint provided on the rightmost side of the lower side wall of the traction plate body. The leftmost fixed joint of the traction plate body of the upper traction plate assembly layer is pivotally connected to the connecting component of the traction plate body corresponding to the lower traction plate assembly layer, and the rightmost fixed joint of the traction plate body of the upper traction plate assembly layer is pivotally connected to the connecting component of the traction plate body corresponding to the lower traction plate assembly layer.

[0009] The above-mentioned expandable traction plate for high-voltage transmission line construction has a connecting component composed of two movable components, the movable component consisting of a movable component and a traction plate housing, the movable component consisting of a movable plate, a slide rod and a spring, the right ends of the slide rod and the spring are fixed to the left side wall of the movable plate, and the spring is located below the slide rod; The traction plate body is composed of a traction plate shell body. An upwardly opening movable cavity is provided on the upper middle side of the traction plate shell body. A spring accommodating cavity and a sliding hole are provided on the left side wall of the movable cavity. The sliding hole is located above the spring accommodating cavity. A spring accommodating cavity and a sliding hole are provided on the right side wall of the movable cavity. The sliding holes on both sides are symmetrical, and the spring accommodating cavities on both sides are symmetrical. The sliding rod of the left movable component is slidably connected to the sliding hole on the left, the spring of the left movable component is located in the spring cavity on the left, and the left end of the spring is fixed to the left wall of the spring cavity, the sliding rod of the right movable component is slidably connected to the sliding hole on the right, the spring of the right movable component is located in the spring cavity on the right, and the right end of the spring is fixed to the right wall of the spring cavity, and the movable sheet can move left and right in the movable cavity.

[0010] The expandable traction plate for high-voltage transmission line construction described above comprises the following: the two leftmost movable plates of the lower traction plate assembly layer are located on either side of the corresponding leftmost fixed joint of the upper layer, and the two movable plates are pivotally connected to the corresponding fixed joints; the two rightmost movable plates of the lower traction plate assembly layer are located on either side of the corresponding rightmost fixed joint of the upper layer, and the two movable plates are pivotally connected to the corresponding fixed joints; When there are multiple traction board bodies in the same traction board assembly layer, in two adjacent traction board bodies, the rightmost fixed joint of the traction board body on the left is fitted with the leftmost fixed joint of the traction board body on the right, and the two fitted fixed joints are pivotally connected to the two movable pieces of the corresponding traction board body of the next traction board assembly layer, and the two movable pieces are located on both sides of the two fixed joints.

[0011] The above-mentioned expandable traction plate for high-voltage transmission line construction, when the spring is not subjected to external force, the movable piece on the left is located at the leftmost side of the movable cavity, and the movable piece on the right is located at the rightmost side of the movable cavity, and the front and rear inner walls of the movable cavity are provided with two pairs of limiting expansion heads, one pair of limiting expansion heads is close to the left wall of the movable cavity, and the other pair of limiting expansion heads is close to the right wall of the movable cavity, and the distance between the two pairs of limiting expansion heads is twice the thickness of the movable piece, when the movable piece on the left is located to the right of the pair of limiting expansion heads on the left, the pair of limiting expansion heads on the left limit the movable piece on the left to move to the left, and when the movable piece on the right is located to the left of the pair of limiting expansion heads on the right, the pair of limiting expansion heads on the right limit the movable piece on the right to move to the right; The movable piece on the left side of the leftmost traction plate body of the same traction plate assembly layer is located on the right side of a pair of limiting telescopic heads on the left side of the leftmost traction plate body, and the movable piece on the right side of the rightmost traction plate body is located on the left side of a pair of limiting telescopic heads on the right side of the rightmost traction plate body.

[0012] In the above-mentioned expandable traction plate for high-voltage transmission line construction, in the lowest traction plate assembly layer, the two fitted fixed joints are commonly connected to a second connector.

[0013] In the above-mentioned expandable traction plate for high-voltage transmission line construction, in the lowest traction plate assembly layer, except for the fixed joint connected to the hinged tail hammer and the fixed joints fitted to each other, the remaining fixed joints are connected to a first connector.

[0014] The above-mentioned expandable traction plate for high-voltage transmission line construction has a first through hole running through the left and right sides on the movable plate above the slide rod, a second through hole running through the left and right sides on the fixed joint, and a rotating shaft is set in the second through hole of the fixed joint and the corresponding first through hole of the movable plate.

[0015] The material of the traction plate shell of the expandable traction plate for high-voltage transmission line construction described above is steel.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The effect of increasing the traction position can be achieved by increasing the number of layers of the traction plate body, thereby realizing the function of traction of more cables.

[0017] The traction plate body is easy to assemble and can be assembled on site during construction.

[0018] The traction plate body has multiple layers, and the traction plate bodies of adjacent layers are pivotally connected, so that the traction plate bodies of adjacent layers can be bent, which makes it more convenient to pull the cable.

[0019] All traction plates have the same main structure. During construction and maintenance, only a sufficient number of traction plate main bodies and first connectors and second connectors need to be carried without carrying various other accessories. Construction and maintenance are more convenient and cost-effective.

[0020] The two movable pieces can move left and right, and can better adapt to the fixed joints of the upper traction plate body, thereby improving installation efficiency.

[0021] The position-limiting expansion head is provided to locate the movable piece so that the upper traction plate body is always located directly above the corresponding two lower traction plate bodies, so that the entire traction plate is evenly stressed during stretching.

[0022] The second connecting head also serves to fix two adjacent pulling plate bodies.

[0023] When the traction plate body of the modular design is damaged, it can be used again by simply replacing the corresponding traction plate body without scrapping the entire body, thus saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the present invention.

[0025] Figure 2 It is a schematic diagram of the three-dimensional structure of the traction plate main body according to an embodiment of the present invention.

[0026] Figure 3 It is a front view of the traction plate main body according to an embodiment of the present invention.

[0027] Figure 4 2 is a top view of the traction plate body according to an embodiment of the present invention.

[0028] Figure 5 It is a schematic diagram of the three-dimensional structure of the movable component of an embodiment of the present invention.

[0029] Figure 6 2 is a cross-sectional view of a traction plate housing according to an embodiment of the present invention.

[0030] Figure 7 2 is a cross-sectional view of a traction plate body according to an embodiment of the present invention.

[0031] In the figure, the names of the figures corresponding to the figure numbers are: 1. traction plate main body, 11. movable component, 111. movable plate, 112. first through hole, 113. sliding rod, 114. spring, 12. traction plate shell, 121. traction plate shell main body, 122. spring cavity, 123. sliding hole, 124. movable cavity, 125. limiting telescopic head, 126. fixed joint, 2. hinged tail hammer, 3. first connecting head, 4. second connecting head. DETAILED DESCRIPTION

[0032] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that, unless there is a conflict, the embodiments and features in the embodiments of the present application can be combined with each other.

[0033] The following detailed description is an exemplary description, which is intended to provide further detailed description of the present invention. Unless otherwise indicated, all technical terms used in the present invention have the same meaning as those generally understood by those skilled in the art. The terms used in the present invention are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present invention.

[0034] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. 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, unless otherwise specified, "multiple" means two or more. In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] like Figures 1 to 7 An expandable traction plate for high-voltage transmission line construction has six traction plate bodies 1 and two hinged tail hammers 2. The traction plate body 1 is composed of a movable assembly 11 and a traction plate housing 12. The movable assembly 11 is composed of a movable piece 111, a slide rod 113 and a spring 114. The right ends of the slide rod 113 and the spring 114 are fixed to the left side wall of the movable piece 111. The spring 114 is located below the slide rod 113. A first through hole 112 is provided on the movable piece 111 above the slide rod 113. The traction plate housing 12 is composed of a traction plate housing body 121, two pairs of limiting telescopic heads 125 and three fixed joints 126. The fixed joints 126 are provided with second through holes that pass through left and right. The three fixed joints 126 are fixed to the lower side wall of the traction plate housing body 121 at equal intervals. The left side wall of the left fixed joint 126 is located in the same plane as the left side wall of the traction plate housing body 121. The right side wall of the right fixed joint 126 is located in the same plane as the right side wall of the traction plate housing body 121. An active cavity 124 with an upward opening is provided on the upper middle side of the traction plate housing body 121. The left side wall of the active cavity 124 is provided with A spring cavity 122 and a sliding hole 123 are provided. The sliding hole 123 is located above the spring cavity 122. A spring cavity 122 and a sliding hole 123 are provided on the right side wall of the movable cavity 124. The sliding holes 123 on both sides are symmetrical. The spring cavities 122 on both sides are symmetrical. The limiting expansion joints 125 are located on the front and rear inner walls of the movable cavity 124. One pair of limiting expansion joints 125 are close to the left side wall of the movable cavity 124, and the other pair of limiting expansion joints 125 are close to the right side wall of the movable cavity 124. The distance between the two pairs of limiting expansion joints 125 is twice the thickness of the movable sheet 111. The slide rod 113 of the left movable assembly 11 is slidably connected to the slide hole 123 on the left, the spring 114 of the left movable assembly 11 is located in the spring cavity 122 on the left, and the left end of the spring 114 is fixed to the left side wall of the spring cavity 122, the slide rod 113 of the right movable assembly 11 is slidably connected to the slide hole 123 on the right, the spring 114 of the right movable assembly 11 is located in the spring cavity 122 on the right, and the right end of the spring 114 is fixed to the right side wall of the spring cavity 122, and the movable sheet 111 can be in the movable cavity 124. Left and right movement: when the spring is not subjected to external force, the movable piece 111 on the left is located at the leftmost side of the movable cavity 124, and the movable piece 111 on the right is located at the rightmost side of the movable cavity 124. When the movable piece 111 on the left is located on the right side of the pair of limiting telescopic heads 125 on the left, the pair of limiting telescopic heads 125 on the left limit the movable piece 111 on the left to move leftward. When the movable piece 111 on the right is located on the left side of the pair of limiting telescopic heads 125 on the right, the pair of limiting telescopic heads 125 on the right limit the movable piece 111 on the right to move rightward. The six traction plate bodies 1 are divided into three layers from top to bottom. The first layer has one traction plate body 1, the second layer has two traction plate bodies 1, and the third layer has three traction plate bodies 1. During installation, the two movable pieces 111 of the traction plate bodies 1 of the first layer are located between the two pairs of limiting expansion joints 125, and the two first through holes 112 are combined for fixing with the towing cable. The fixed joint 126 on the left side of the traction board body 1 of the first layer is pivotally connected to the two movable pieces 111 on the left side of the traction board body 1 of the second layer, and the two movable pieces 111 are located on both sides of the corresponding fixed joint 126. The fixed joint 126 on the right side of the traction board body 1 of the first layer is pivotally connected to the two movable pieces 111 on the right side of the traction board body 1 of the second layer, and the two movable pieces 111 are located on both sides of the corresponding fixed joint 126. The fixed joint 126 on the left side of the traction plate body 1 on the left side of the second layer is pivotally connected to the two movable pieces 111 of the traction plate body 1 on the left side of the third layer, and the two movable pieces 111 are located on both sides of the corresponding fixed joint 126. The fixed joint 126 on the right side of the traction plate body 1 on the right side of the second layer is pivotally connected to the two movable pieces 111 of the traction plate body 1 on the right side of the third layer, and the two movable pieces 111 are located on both sides of the corresponding fixed joint 126. The fixed joint 126 on the right side of the traction plate body 1 on the left side of the second layer and the fixed joint 126 on the left side of the traction plate body 1 on the right side of the second layer are simultaneously pivotally connected to the two movable pieces 111 of the traction plate body 1 in the middle of the third layer, and the two movable pieces 111 are located on both sides of the corresponding two fixed joints 126. The fixed joint 126 on the left side of the traction plate body 1 on the left side of the third layer is connected to a hinged tail hammer 2, and the fixed joint 126 on the right side of the traction plate body 1 on the right side of the third layer is connected to another hinged tail hammer 2; The middle fixed joint 126 of the third-layer traction plate body 1 is connected to a first connector 3, and the two fixed joints 126 that are attached to the two third-layer traction plate bodies 1 are commonly connected to a second connector 4. The first connector 3 and the second connector 4 are used to connect the cables that need to be pulled.

[0037] The above-mentioned expandable traction plate for high-voltage transmission line construction, the movable piece 111 on the left side of the traction plate body 1 on the left side of the third layer is located on the right side of a pair of limiting telescopic heads 125 on the left side of the traction plate body 1 on the left side of the third layer, and the movable piece 111 on the right side of the traction plate body 1 on the right side of the third layer is located on the left side of a pair of limiting telescopic heads 125 on the right side of the traction plate body 1 on the right side of the third layer.

[0038] In the above-mentioned expandable traction plate for high-voltage transmission line construction, the fixed joint 126 and the corresponding movable piece 111 are pivotally connected by setting a rotating shaft in the second through hole of the fixed joint 126 and the first through hole 112 of the movable piece 111.

[0039] In the above-mentioned expandable traction plate for high-voltage transmission line construction, the traction plate housing 12 is made of steel.

[0040] Furthermore, the number of layers of the traction plate body 1 can be any number greater than or equal to two layers.

[0041] Furthermore, the number of the fixed joints 126 below the traction plate body 1 can be any number greater than or equal to 3.

[0042] The present invention has the following beneficial effects: 1. The effect of increasing the traction position can be achieved by increasing the number of layers of the traction plate body 1, thereby realizing the function of traction of more cables.

[0043] 2. The traction plate body 1 is easy to assemble and can be assembled on site during construction.

[0044] 3. The traction board body 1 has multiple layers, and the traction board bodies 1 of adjacent layers are pivotally connected, so that the traction board bodies 1 of adjacent layers can be bent, which is more convenient for pulling cables.

[0045] 4. All traction plate bodies 1 have the same structure. During construction and maintenance, you only need to carry a sufficient number of traction plate bodies 1 and the first connectors 3 and the second connectors 4 for assembly. There is no need to carry various other accessories, which makes construction and maintenance more convenient and less costly.

[0046] 5. The two movable pieces 111 can move left and right, and can better adapt to the fixed joints 126 of the upper traction plate body 1, thereby improving installation efficiency.

[0047] 6. A limiting expansion head 125 is provided to position the movable piece 111 so that the upper traction plate body 1 is always located above the middle of the two corresponding lower traction plate bodies 1, so that the entire traction plate is evenly stressed during stretching.

[0048] 7. The second connecting head 4 also serves to fix two adjacent traction plate bodies 1 .

[0049] 8. Modular design. When the traction plate body 1 is damaged, it can be used again by simply replacing the corresponding traction plate body 1 without scrapping the entire body, thus saving costs.

[0050] Throughout this specification, references to terms such as "one embodiment," "example," or "specific example" indicate that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0051] It is understood from common technical knowledge that the present invention may be implemented by other embodiments that do not depart from its spirit or essential features. Therefore, the embodiments disclosed above are, in all respects, merely illustrative and not exclusive. All modifications within the scope of the present invention or equivalent to the scope of the present invention are intended to be encompassed by the present invention.

Claims

1. An expandable traction plate for high-voltage transmission line construction, comprising n traction plate assembly layers, where n is a positive integer greater than or equal to 2, characterized in that: All traction plate assembly layers are arranged in sequence from top to bottom, and the nth traction plate assembly layer has n traction plate bodies (1) distributed left and right, one traction plate body (1) of the upper traction plate assembly layer is located directly above two traction plate bodies (1) of the lower traction plate assembly layer, and one traction plate body (1) of the upper traction plate assembly layer is pivotally connected to the corresponding two traction plate bodies (1) of the lower traction plate assembly layer, and two adjacent traction plate bodies (1) of the same traction plate assembly layer are placed side by side and attached to each other, and the lower side wall of each traction plate body (1) is provided with at least three fixed joints (126) at intervals.

2. The expandable traction plate for high-voltage transmission line construction according to claim 1, characterized in that: The leftmost fixed joint (126) and the rightmost fixed joint (126) of the lowest traction plate assembly layer are each hingedly connected to a hinged tail hammer (2).

3. The expandable traction plate for high-voltage transmission line construction according to claim 2, characterized in that: A connecting component is provided at the upper middle portion of the traction plate body (1); a fixed joint (126) is provided at the leftmost side of the lower side wall of the traction plate body (1); a fixed joint (126) is provided at the rightmost side of the lower side wall of the traction plate body (1); the fixed joint (126) at the leftmost side of the traction plate body (1) of the upper traction plate assembly layer is pivotally connected to the connecting component of the corresponding traction plate body (1) of the lower traction plate assembly layer; and the fixed joint (126) at the rightmost side of the traction plate body (1) of the upper traction plate assembly layer is pivotally connected to the connecting component of the corresponding traction plate body (1) of the lower traction plate assembly layer.

4. The expandable traction plate for high-voltage transmission line construction according to claim 3, characterized in that: The connecting component is composed of two movable components (11), the movable component (11) is composed of a movable component (11) and a traction plate housing (12), the movable component (11) is composed of a movable sheet (111), a slide rod (113) and a spring (114), the right ends of the slide rod (113) and the spring (114) are fixed to the left side wall of the movable sheet (111), and the spring (114) is located below the slide rod (113); The traction plate body (1) is composed of a traction plate shell body (121), a movable cavity (124) with an opening facing upward is provided on the upper middle side of the traction plate shell body (121), a spring accommodating cavity (122) and a sliding hole (123) are provided on the left side wall of the movable cavity (124), and the sliding hole (123) is located above the spring accommodating cavity (122), a spring accommodating cavity (122) and a sliding hole (123) are provided on the right side wall of the movable cavity (124), and the sliding hole (123) is located above the spring accommodating cavity (122), the sliding holes (123) on both sides are symmetrical, and the spring accommodating cavities (122) on both sides are symmetrical; The slide rod (113) of the left movable assembly (11) is slidably connected to the left slide hole (123), the spring (114) of the left movable assembly (11) is located in the left spring cavity (122), and the left end of the spring (114) is fixed to the left side wall of the spring cavity (122), the slide rod (113) of the right movable assembly (11) is slidably connected to the right slide hole (123), the spring (114) of the right movable assembly (11) is located in the right spring cavity (122), and the right end of the spring (114) is fixed to the right side wall of the spring cavity (122).

5. The expandable traction plate for high-voltage transmission line construction according to claim 4, characterized in that: The two leftmost movable pieces (111) of the next traction plate assembly layer are located on both sides of the leftmost fixed joint (126) corresponding to the previous layer, and the two movable pieces (111) are pivotally connected to the corresponding fixed joint (126); the two rightmost movable pieces (111) of the next traction plate assembly layer are located on both sides of the rightmost fixed joint (126) corresponding to the previous layer, and the two movable pieces (111) are pivotally connected to the corresponding fixed joint (126); When a plurality of traction plate bodies (1) are provided in the same traction plate assembly layer, the rightmost fixed joint (126) of the left traction plate body (1) and the leftmost fixed joint (126) of the right traction plate body (1) of two adjacent traction plate bodies (1) are affixed, and the two affixed fixed joints (126) are pivotally connected to the two movable pieces (111) of the corresponding traction plate body (1) of the next traction plate assembly layer, and the two movable pieces (111) are located on both sides of the two fixed joints (126).

6. The expandable traction plate for high-voltage transmission line construction according to claim 5, characterized in that: When the spring is not subjected to external force, the movable piece (111) on the left is located at the leftmost side of the movable cavity (124), and the movable piece (111) on the right is located at the rightmost side of the movable cavity (124). Two pairs of limiting telescopic heads (125) are provided on the front and rear inner walls of the movable cavity (124). One pair of limiting telescopic heads (125) is close to the left side wall of the movable cavity (124), and the other pair of limiting telescopic heads (125) is close to the right side wall of the movable cavity (124). The distance between the two pairs of limiting telescopic heads (125) is twice the thickness of the movable piece (111). When the movable piece (111) on the left is located on the right side of the pair of limiting telescopic heads (125) on the left, the pair of limiting telescopic heads (125) on the left limit the movable piece (111) on the left to move leftward. When the movable piece (111) on the right is located on the left side of the pair of limiting telescopic heads (125) on the right, the pair of limiting telescopic heads (125) on the right limit the movable piece (111) on the right to move rightward. The movable piece (111) on the left side of the leftmost traction plate body (1) of the same traction plate assembly layer is located on the right side of a pair of position-limiting telescopic heads (125) on the left side of the leftmost traction plate body (1), and the movable piece (111) on the right side of the rightmost traction plate body (1) is located on the left side of a pair of position-limiting telescopic heads (125) on the right side of the rightmost traction plate body (1).

7. The expandable traction plate for high-voltage transmission line construction according to claim 6, characterized in that: In the bottommost traction plate assembly layer, two fitted fixed joints (126) are commonly connected to a second connecting joint (4).

8. The expandable traction plate for high-voltage transmission line construction according to claim 7, characterized in that: In the lowest traction plate assembly layer, except for the fixed joint (126) connected to the hinged tail hammer (2) and the fixed joints (126) that fit each other, the remaining fixed joints (126) are connected to a first connector (3).

9. The expandable traction plate for high-voltage transmission line construction according to claim 8, characterized in that: A first through hole (112) extending leftward and rightward is provided on the movable piece (111) above the slide bar (113), a second through hole extending leftward and rightward is provided on the fixed joint (126), and a rotating shaft is provided in the second through hole of the fixed joint (126) and the corresponding first through hole (112) of the movable piece (111).

10. The expandable traction plate for high-voltage transmission line construction according to claim 9, characterized in that: The material of the traction plate housing (12) is steel.

Images