Electric power steel pipe pole connecting and fastening device

Abstract

The utility model relates to the technical field of electric power equipment, in particular to an electric power steel pipe pole connecting and fastening device. The device is mainly composed of the joint pipes and the connecting fasteners used for connecting and fastening the adjacent joint pipes, the structure of the joint pipes is the same as that of an existing joint pipe, the joint pipes do not need to be modified, and the connecting fasteners are mainly composed of the carrying bases, the protruding shafts, the expansion sleeves, the positioning protrusions and the fastening screws. The flange plates of the corresponding section pipes are installed on the corresponding positioning protrusions, then the fastening screws are screwed inwards, the corresponding cylindrical section pipe bodies are extruded and locked through the expansion sleeves, in this way, tedious bolt fastening operation is not needed, and rapid assembling and disassembling operation can be achieved only by adjusting one fastening screw. And the butt joint smoothness is also greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric power equipment, in particular to an electric power steel pipe pole connection and fastening device. Background Art

[0002] The electric steel pipe pole is made of polygonal steel pipe, circular steel pipe and other steel materials, and is treated with hot-dip galvanizing or hot-spray zinc coating for corrosion protection. It is mainly used for power line erection and is an alternative to traditional cement poles. The small footprint is the main advantage of steel poles, which is generally about 1 / 3 of the self-supporting iron tower, which can save a lot of land expenses. In order to ensure the appropriate height, the electric steel pipe pole is composed of multiple sections, and adjacent sections are connected. At present, flanges and bolts are mostly used for hoisting and installation during construction. In actual operation, the requirements for hoisting operation are high, and it is difficult to accurately position the flange; at the same time, it is locked by bolts, the burden of the bolts is large, and the overall connection strength is defective.

[0003] To this end, the patent document with the publication number CN218408060U discloses a connection and fastening device for electric steel pipe poles, including an upper pole and a lower pole, wherein the opposite ends of the upper pole and the lower pole are respectively provided with a first flange and a second flange; a connection assembly is provided between the upper pole and the lower pole, and the connection assembly includes an inner clamp ring and an inner insert rod, wherein the inner insert rod is provided at the center position of the inner clamp ring, and the upper and lower ends of the inner insert rod are respectively inserted into the interior of the upper pole and the lower pole. By providing the connection assembly to be inserted into the interior of the upper pole and the lower pole, the overall strength is improved; and the inner insert rod significantly improves the alignment and installation efficiency of the upper pole; the retaining ring is covered on the outer ring side of the first flange and the second flange, further improving the overall stability and reliability, and reducing the burden of the bolts.

[0004] However, this type of electric steel pipe pole connection and fastening device still has some shortcomings when used. First, it requires the installation of a large number of bolts, which makes the installation operation cumbersome; second, the outer diameter of the inner rod is fixed. In order to ensure the supporting effect, its outer diameter needs to be coordinated with the inner diameter of the rod, which makes it difficult to plug in smoothly. Therefore, it is necessary to optimize and improve its structure. Utility Model Content

[0005] The purpose of the utility model is to overcome the above problems existing in the traditional technology and provide an electric steel pipe pole connection and fastening device.

[0006] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0007] An electric steel pipe pole connection and fastening device comprises a tube section and a connection fastener for fastening adjacent tube sections;

[0008] The joint pipe comprises a cylindrical joint pipe body and flanges arranged at both ends thereof, and the flanges are evenly provided with a plurality of positioning holes along the circumferential direction;

[0009] The connecting fastener comprises a carrier, two convex shafts are symmetrically arranged on both sides of the carrier, a clamping sleeve is arranged on the outside of each convex shaft of the carrier, a plurality of positioning protrusions are evenly arranged on the periphery of the clamping sleeve of the carrier, an annular cavity is arranged inside the clamping sleeve, the inner end of the annular cavity is connected with the adjusting cavity through radial oil pipe and axial oil pipe, a fastening screw is installed on the outer end of the adjusting cavity, and the annular cavity, radial oil pipe, axial oil pipe and adjusting cavity are filled with hydraulic medium; when the hydraulic medium in the annular cavity of the clamping sleeve receives the pressure from the fastening screw, it expands evenly inward and outward, thereby generating even surface pressure on the convex shaft and the joint pipe in contact with it.

[0010] Furthermore, in the above-mentioned electric steel pipe pole connection and fastening device, the number of the positioning protrusions and the positioning holes are equal, and the positioning protrusions can be inserted into the corresponding positioning holes.

[0011] Furthermore, in the above-mentioned electric steel pipe pole connection and fastening device, a fastening groove is provided in the carrier to facilitate the inward movement of the fastening screw.

[0012] Furthermore, in the above-mentioned electric steel pipe pole connection and fastening device, the carrier is located on the outer side of the fastening groove and is provided with a pointed head for marking the direction of the corresponding expansion sleeve.

[0013] Furthermore, in the above-mentioned electric steel pipe pole connection and fastening device, the inner end of the fastening screw is provided with a sealing piston that cooperates with the adjustment cavity.

[0014] Furthermore, in the above-mentioned electric steel pipe pole connection and fastening device, the carrier is provided with a weight-reducing hole in the convex shaft, and a cross-shaped supporting rib is arranged in the weight-reducing hole.

[0015] The beneficial effects of the utility model are:

[0016] The utility model device is mainly composed of a joint pipe and a connection fastener for connecting and fastening adjacent joint pipes, wherein the structure of the joint pipe is the same as the existing joint pipe structure and does not need to be modified, wherein the connection fastener is mainly composed of a carrier, a convex shaft, a tightening sleeve, a positioning protrusion and a tightening screw. When a connection and tightening operation is required, the flange of the corresponding joint pipe is installed on the corresponding positioning protrusion, and then the tightening screw is screwed inwardly and the corresponding cylindrical joint pipe body is squeezed and locked by the tightening sleeve. In this way, there is no need to perform cumbersome bolt tightening operations, and only one tightening screw needs to be adjusted to achieve quick assembly and disassembly operations, and the smoothness of docking is also greatly improved.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the above advantages at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 It is a schematic diagram of the use state of the utility model;

[0020] Figure 2 It is a schematic diagram of the structure of the utility model after being separated as a whole;

[0021] Figure 3 It is a structural schematic diagram of the middle section pipe of the utility model;

[0022] Figure 4 It is a half-section schematic diagram of the connection fastener in the utility model;

[0023] Figure 5 It is a schematic diagram of the main structure of the connecting fastener in the utility model;

[0024] Figure 6 It is a schematic diagram of the top view of the structure of the connecting fastener in the utility model;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1-joint tube, 101-cylindrical joint tube body, 102-flange, 103-positioning hole, 2-connecting fastener, 201-carrier, 202-convex shaft, 203-expansion sleeve, 204-positioning protrusion, 205-annular cavity, 206-radial oil pipe, 207-axial oil pipe, 208-adjusting cavity, 209-fastening screw. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] like Figure 1-Figure 6 As shown, this embodiment is a connection and fastening device for electric steel pipe poles, comprising a tube section 1 and a connection and fastening device 2 for connecting and fastening adjacent tube sections 1 .

[0029] In this embodiment, the joint pipe 1 includes a cylindrical joint pipe body 101 and flanges 102 arranged at both ends thereof. The flange 102 is evenly provided with a plurality of positioning holes 103 along the circumferential direction.

[0030] In this embodiment, the connection fastener 2 includes a carrier 201, two convex shafts 202 are symmetrically arranged on both sides of the carrier 201, a clamping sleeve 203 is arranged on the outside of each convex shaft 202 of the carrier 201, and a plurality of positioning protrusions 204 are evenly arranged on the periphery of the clamping sleeve 203 of the carrier 201. An annular cavity 205 is arranged inside the clamping sleeve 203, and the inner end of the annular cavity 205 is connected with the adjustment cavity 208 through the radial oil pipe 206 and the axial oil pipe 207. A tightening screw 209 is installed on the outer end of the adjustment cavity 205, and the annular cavity 205, the radial oil pipe 206, the axial oil pipe 207 and the adjustment cavity 208 are filled with hydraulic medium. When the hydraulic medium in the annular cavity 205 of the clamping sleeve 203 receives the pressure from the tightening screw 209, it expands evenly inward and outward, thereby generating uniform surface pressure on the convex shaft 202 and the joint pipe 1 in contact with it.

[0031] In this embodiment, the number of the positioning protrusions 204 and the number of the positioning holes 103 are equal, and the positioning protrusions 204 can be inserted into the corresponding positioning holes 103 .

[0032] In this embodiment, a fastening groove is provided in the carrier 201 to facilitate the inward movement of the fastening screw 209 .

[0033] In this embodiment, the carrier 201 is provided with a pointed head located on the outer side of the fastening groove for marking the direction of the corresponding expansion sleeve 203 .

[0034] In this embodiment, a sealing piston cooperating with the adjustment chamber 208 is provided at the inner end of the fastening screw 209 .

[0035] In this embodiment, a weight-reducing hole is opened in the convex shaft 202 of the carrier 201, and a cross-shaped supporting rib is arranged in the weight-reducing hole.

[0036] A specific application of this embodiment is: this device is mainly composed of a joint pipe 1 and a connecting fastener 2 for connecting and fastening adjacent joint pipes 1, wherein the structure of the joint pipe 1 is the same as the existing joint pipe structure and does not need to be modified, wherein the connecting fastener 2 is mainly composed of a carrier 201, a convex shaft 202, a tightening sleeve 203, a positioning protrusion 204 and a tightening screw 209. When a connection and tightening operation is required, the flange 102 of the corresponding joint pipe 1 is installed on the corresponding positioning protrusion 204, and then the tightening screw 209 is screwed inwardly, and the corresponding cylindrical joint pipe body 101 is squeezed and locked by the tightening sleeve 203. In this way, there is no need to perform cumbersome bolt tightening operations, and only one tightening screw 209 needs to be adjusted to achieve quick assembly and disassembly operations, and the smoothness of docking is also greatly improved.

[0037] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to only specific implementation methods. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is only limited by the claims and their full scope and equivalents.

Claims

1. A power steel pipe pole connection and fastening device, characterized in that: It includes a joint pipe and a connection fastener for connecting and fastening adjacent joint pipes; The joint pipe comprises a cylindrical joint pipe body and flanges arranged at both ends thereof, and the flanges are evenly provided with a plurality of positioning holes along the circumferential direction; The connecting fastener comprises a carrier, two convex shafts are symmetrically arranged on both sides of the carrier, a clamping sleeve is arranged on the outside of each convex shaft of the carrier, a plurality of positioning protrusions are evenly arranged on the periphery of the clamping sleeve of the carrier, an annular cavity is arranged inside the clamping sleeve, the inner end of the annular cavity is connected with the adjusting cavity through radial oil pipe and axial oil pipe, a fastening screw is installed on the outer end of the adjusting cavity, and the annular cavity, radial oil pipe, axial oil pipe and adjusting cavity are filled with hydraulic medium; when the hydraulic medium in the annular cavity of the clamping sleeve receives the pressure from the fastening screw, it expands evenly inward and outward, thereby generating even surface pressure on the convex shaft and the joint pipe in contact with it.

2. The electric power steel pipe pole connection and fastening device according to claim 1 is characterized in that: The number of the positioning protrusions is equal to the number of the positioning holes, and the positioning protrusions can be inserted into the corresponding positioning holes.

3. The electric power steel pipe pole connection and fastening device according to claim 1 is characterized in that: The carrier is provided with a fastening groove which facilitates the inward movement of the fastening screw.

4. The electric power steel pipe pole connection and fastening device according to claim 3 is characterized in that: The carrier is provided with a pointed head on the outer side of the fastening groove for marking the direction of the corresponding expansion sleeve.

5. The electric power steel pipe pole connection and fastening device according to claim 1 is characterized in that: The inner end of the fastening screw is provided with a sealing piston matched with the adjusting cavity.

6. The electric power steel pipe pole connection and fastening device according to claim 1, characterized in that: The carrier is provided with a weight-reducing hole in the convex shaft, and a cross-shaped supporting rib is arranged in the weight-reducing hole.

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