CN212716404U - Ladder stand device for overhead transmission line mountain area high outcrop foundation - Google Patents
Ladder stand device for overhead transmission line mountain area high outcrop foundation Download PDFInfo
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- CN212716404U CN212716404U CN202020946048.2U CN202020946048U CN212716404U CN 212716404 U CN212716404 U CN 212716404U CN 202020946048 U CN202020946048 U CN 202020946048U CN 212716404 U CN212716404 U CN 212716404U
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Abstract
A ladder stand device for a high-outcrop foundation in a mountain area of an overhead transmission line comprises a ladder stand device main body arranged on a foundation upright post, wherein the ladder stand device main body is provided with a plurality of steps of ladder stands, and each step of ladder stand comprises a stepping rod, two support rods and two connecting sleeves; the two ends of the stepping rod are perpendicularly connected with the two support rods, the support rods are connected with the connecting sleeves, the connecting sleeves are arranged inside the concrete of the foundation column, and fastening pieces are arranged at the connecting positions of the two ends of the stepping rod and the two support rods. The utility model discloses the construction installation is simple and convenient, the safety in utilization is high, anticorrosive mode is reliable, the commonality is strong.
Description
Technical Field
The utility model relates to a pre-buried formula cat ladder device, concretely relates to overhead transmission line mountain area high for head basis cat ladder device.
Background
With the development of economy and the gradual development and growth of power grid construction scale in China, power transmission lines are often required to be wired in mountains and greens with rugged terrain and inconvenient transportation conditions. When the high-low legs of the iron tower are configured to be not completely adaptive to the terrain, the high-outcrop foundation is inevitably used for protecting the environment, reducing the earth excavation of the tower position and preventing water and soil loss. In order to ensure that the line can be safely operated and maintained conveniently, a ladder climbing device is generally required to be arranged on the foundation with the height of a pure dew head exceeding 1500mm, so that the personnel can conveniently go to the tower for operation.
The conventional power transmission line high-outcrop foundation crawling ladder has the following types:
(1) and (4) separating and inserting. A plurality of galvanized round steel bars or ribbed steel bars are bent in advance to form a [ -shape and then inserted into the base upright posts at certain intervals to complete the installation of the ladder stand. The integral forming can be pre-buried immediately when the foundation upright post is poured with concrete, but the template is complex to manufacture and inconvenient to remove; the column can be installed by using bonding materials such as bar-planting glue and the like after secondary drilling on the concrete surface of the column after pouring of the column is finished, an electric drill is needed in the process, the construction electricity consumption under the mountain region condition is difficult to guarantee, and the durability of the bar-planting bonding material is poor in the field environment.
(2) And (4) separating a welding mode. The anchor plate and the straight anchor bar are welded and then embedded into the upright post concrete to serve as a welding connection support of the separated ladder stand. The method is characterized in that welding and butt welding joint secondary anticorrosion treatment are required, and the anticorrosion effect is not good except that welding power consumption is difficult to guarantee.
(3) And a separate bolt connection type. The nut sleeves are embedded into the foundation upright posts, and then the special ladder stand part and the nut sleeves are connected through bolts to form the ladder stand. Its characteristics are convenient change, but easily stolen simultaneously, and the cat ladder is the special-purpose member, and the process is complicated, and the price is higher.
(4) The whole is connected. This type cat ladder generally is whole prefabricated welding spare, adopts hot-dip galvanizing anticorrosive, only needs to connect in basic top surface and ground department, does not influence masterplate installation and concrete placement. The steel consumption is large, the steel needs to be customized according to different basic open head values, the universality is poor, and the steel is easy to be stolen and cut.
Disclosure of Invention
The utility model aims to solve the technical problem that, overcome prior art not enough, provide a cat ladder device for overhead transmission line mountain area high outcrop basis that simple manufacture, anticorrosive mode are reliable, simple to operate, commonality are strong.
The technical scheme adopted by the utility model for solving the technical problems is that the ladder stand device for the overhead transmission line mountain high-outcrop foundation comprises a ladder stand device main body arranged on a foundation upright post, wherein the ladder stand device main body is provided with a plurality of steps of ladder stands, and each of the plurality of steps of ladder stands comprises a step rod, two support rods and two connecting sleeves; the two ends of the stepping rod are perpendicularly connected with the two support rods, the support rods are connected with the connecting sleeves, the connecting sleeves are arranged inside the concrete of the foundation column, and fastening pieces are arranged at the connecting positions of the two ends of the stepping rod and the two support rods.
Furthermore, a positioning connecting rod is arranged inside the concrete of the foundation column and used for controlling the positioning accuracy of the two connecting sleeves.
Furthermore, the mark time pole is the round bar, and the external diameter at its both ends is less than the external diameter at middle part, and both ends are equipped with the screw thread.
Further, the support rod is a round rod, and the tail part of one end of the support rod is provided with a long round hole perpendicular to the axial direction of the support rod and used for connecting the stepping rod; the other end is provided with a thread which is used for connecting with the connecting sleeve.
Furthermore, one end of the connecting sleeve is welded and fixed with the positioning connecting rod, the other end of the connecting sleeve is provided with an internal thread in threaded connection with the support rod, and an opening at the end of the internal thread extends out of the concrete.
Further, the fastener is a ball type anti-dismounting nut.
Further, the material of the step rod is HRB 400-grade ribbed steel bars.
Further, the material of the support rod is Q345-grade round steel.
Further, the material of connecting sleeve is Q345 level round steel.
Further, the material of the positioning connecting rod is Q235 grade 4x40 flat steel.
The utility model discloses compare in current conventional cat ladder type, have following advantage:
(1) all the components of the ladder climbing device can be manufactured in a processing factory, and only the ladder climbing device needs to be assembled on a construction site according to steps without welding operation and drilling operation, so that power generation equipment and welding equipment are prevented from being transported for a welding process in a mountain power transmission line with inconvenient traffic.
(2) The raw materials of the component are only ribbed steel bars, round steel and steel plates, the processing steps are simple, and only common equipment such as a lathe, a thread rolling machine and the like is needed; the ladder stand stepping rod is processed by the ribbed steel bars, and the surface rib lines of the ladder stand stepping rod can be directly used as anti-skidding measures of the ladder stand, so that the safety is high.
(3) The hot-dip galvanizing anticorrosion is adopted after the components are processed in factories, and the coating anticorrosion is adopted after the components are welded on site with a conventional crawling ladder, so that the effect is more reliable, meanwhile, the anticorrosion operation on a construction site is also avoided, and the construction and installation process is simplified.
(4) The components are connected tightly, the connection mode is similar to that of a wooden structure 'mortise and tenon', and the ring is buckled with each other: the support rods are screwed into the connecting sleeves fixed on the concrete of the foundation columns, the two ends of the stepping rods are inserted into the oblong holes in the ends of the two support rods respectively, the support rods can be prevented from further rotating, and finally the two ends of the stepping rods are fastened by adopting ball type anti-dismounting nuts, so that the whole structure can be fixed and locked. This cat ladder structure biography power is clear, and the type is simple, and other cat ladder structural style that use bolted connection are more reliable in the theftproof effect.
Drawings
Fig. 1 is an installation diagram of an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic view of the stepping bar structure of FIG. 1 and its connection to the support bar;
fig. 4 is a schematic view of the support rod structure of fig. 1 and its connection to the connecting sleeve.
In the figure: 1-basic upright post, 2-ladder climbing device body, 21-ladder climbing, 211-step rod, 2111-two ends of step rod, 2112-middle part of step rod, 2113-thread of step rod, 212-support rod, 2121-long round hole of support rod, 2122-thread of support rod, 213-positioning connecting rod, 3-ball type anti-unloading nut, 4-connecting sleeve and 41-internal thread of connecting sleeve.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Referring to fig. 1-4, the embodiment includes a ladder climbing device main body 2 installed on a base upright 1, the ladder climbing device main body 2 is provided with a plurality of ladder climbing stages 21, each ladder climbing stage 21 includes a stepping rod 211, two support rods 212 and two connecting sleeves 4, two ends 2111 of the stepping rod are vertically connected with the two support rods 212, the support rods 212 are connected with the connecting sleeves 4, the connecting sleeves 4 are connected with a positioning connecting rod 213 and are all arranged inside concrete of the base upright 1, and the positioning connecting rod 213 is used for positioning precision of the two connecting sleeves 4 and can be optionally not used when necessary. Fasteners are arranged at the joints of the two ends 2111 of the stepping rod and the two support rods 212.
The vertical installation distance and the number of the crawling ladder 21 on the base upright post 1 are determined by the height of the base upright post 1, and the distance is generally 400-500 mm, so that the crawling ladder is convenient for people to use and is arranged on the principle.
The stepping rod 211 is a round rod, the outer diameters of the two ends 2111 of the stepping rod are smaller than the outer diameter of the middle portion 2112, and threads 2113 are arranged at the two ends. The stepping bar 211 is made of HRB400 grade phi 20mm ribbed steel bars.
The support rod 212 is a round rod, one end of which is connected with the stepping rod 211, and the other end is connected with the connecting sleeve 4. The tail part of one end of the connecting stepping rod 211 is provided with a long round hole 2121 vertical to the axial direction of the support rod 212; the end connected to the connecting sleeve 4 is provided with a thread 2122 and the support rod 212 is made of round steel of 40mm phi, grade Q345.
When the device is installed, the stepping rod 211 is perpendicular to the two support rods 212, and two ends of the stepping rod 211 are respectively inserted into the oblong holes 2121 at two ends of the support rods 212 and are fastened through the ball type anti-dismounting nuts 3.
The support rod 212 is screwed to the connecting sleeve 4. One end of the connecting sleeve 4 is welded and fixed to the positioning link 213, and the other end is provided with an internal thread 41 connected to the support rod thread 2122. The connecting sleeve 4 is made of Q345-grade 32 mm round steel. The axis direction of the connecting sleeve 4 is horizontally placed and is vertical to the axis direction of the stepping rod 211, the outer surface of the end of the internal thread 41 is flush with the outer vertical surface of the concrete of the foundation upright post 1 and is embedded into the concrete of the foundation upright post 1, the opening of the end of the internal thread 41 extends out of the concrete of the foundation upright post 1, and the connecting sleeve can be fixed after the concrete of the foundation upright post 1 is poured and solidified.
The positioning link 213 is made of Q235 grade 4x40 flat steel.
The following explains the processing sequence and the construction and installation process of the main components of the present embodiment with reference to the accompanying drawings:
(1) the stepping rod 211, the support rod 212 and the connecting sleeve 4 are processed independently, and then are subjected to hot-dip galvanizing and corrosion prevention together with the ball type anti-unloading nut 3, the positioning connecting rod 213 can be free from hot-dip galvanizing, and then are welded with the galvanized connecting sleeve 4 after being processed; and after finishing, transporting the processed component to a construction site.
(2) Before pouring concrete on the foundation upright post 1, steel bar binding and formwork erecting operation are firstly carried out according to a conventional foundation construction mode.
(3) If a wood mold is adopted, a circular hole can be drilled on the surface of the mold plate by using a flashlight and is used for fixing the connecting sleeve 4; if a steel template is adopted, the connecting sleeve 4 and the positioning connecting rod 213 can be welded into a whole and bound on the basic stirrup; the ends of the connecting sleeves 4 of the two installation modes are required to be tightly propped against the surface of the template, and the connecting sleeves 4 can be plugged by flexible materials to avoid plugging.
(4) And (4) finishing concrete pouring and form removal of the foundation upright post 1 in a conventional mode.
(5) After the concrete strength of the foundation column 1 meets the requirement, the ladder stand device main body 2 is installed, and the installation sequence of the ladder stands 21 in each step is as follows: firstly, connecting and screwing the two support rods 212 and the corresponding connecting sleeves 4, and adjusting the internal threads 41 at the end parts of the two connecting sleeves 4 to enable the directions to be consistent; one end of the stepping rod 211 penetrates into the long round hole 2121 of the end part of one support rod from the middle to the two sides, and the other end of the stepping rod 211 penetrates into the long round hole of the end part of the other support rod; the ball type anti-dismounting nuts 3 are used for mounting and fastening from two ends of the stepping rod 211 until the stepping rod 211 is not loosened any more, and the mounting is finished.
Various modifications and variations of the present invention may be made by those skilled in the art, and they are still within the scope of the present invention, provided they are within the scope of the claims and their equivalents.
What is not described in detail in the specification is prior art that is well known to those skilled in the art.
Claims (10)
1. The utility model provides an overhead transmission line mountain area high outcrop basis is with cat ladder device, is including installing the cat ladder device main part on the foundation column, cat ladder device main part is equipped with a plurality of rank cat ladders, its characterized in that: the ladder stands comprise a stepping rod, two support rods and two connecting sleeves; the two ends of the stepping rod are perpendicularly connected with the two support rods, the support rods are connected with the connecting sleeves, the connecting sleeves are arranged inside the concrete of the foundation column, and fastening pieces are arranged at the connecting positions of the two ends of the stepping rod and the two support rods.
2. The ladder climbing device for the overhead transmission line mountain area high-outcrop foundation of claim 1, characterized in that: and a positioning connecting rod is arranged in the concrete of the foundation column and is used for controlling the positioning accuracy of the two connecting sleeves.
3. The ladder climbing device for the overhead transmission line mountain area high-outcrop foundation of claim 2, characterized in that: the stepping rod is a round rod, the outer diameters of the two ends of the stepping rod are smaller than that of the middle of the stepping rod, and threads are arranged at the two ends of the stepping rod.
4. The ladder climbing device for the overhead transmission line mountain area high-outcrop foundation of claim 3, wherein: the support rod is a round rod, and the tail part of one end of the support rod is provided with a long round hole vertical to the axial direction of the support rod and used for connecting the stepping rod; the other end is provided with a thread which is used for connecting with the connecting sleeve.
5. The ladder climbing device for the overhead transmission line mountain area high-outcrop foundation of claim 4, wherein: one end of the connecting sleeve is welded and fixed with the positioning connecting rod, the other end of the connecting sleeve is provided with an internal thread in threaded connection with the support rod, and an opening at the end of the internal thread extends out of the concrete.
6. The ladder stand device for the overhead transmission line mountain area high outcrop foundation according to any one of claims 1 to 5, characterized in that: the fastener is a ball type anti-dismounting nut.
7. The ladder stand device for the overhead transmission line mountain area high outcrop foundation according to any one of claims 1 to 5, characterized in that: the material of the step rod is HRB 400-grade ribbed steel bars.
8. The ladder stand device for the overhead transmission line mountain area high outcrop foundation according to any one of claims 1 to 5, characterized in that: the material of the support rod is Q345-grade round steel.
9. The ladder stand device for the overhead transmission line mountain area high outcrop foundation according to any one of claims 1 to 5, characterized in that: the connecting sleeve is made of Q345-grade round steel.
10. The ladder stand device for the overhead transmission line mountain area high outcrop foundation of any one of claims 2 to 5, wherein: the positioning connecting rod is made of Q235-grade 4x40 flat steel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020946048.2U CN212716404U (en) | 2020-05-29 | 2020-05-29 | Ladder stand device for overhead transmission line mountain area high outcrop foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020946048.2U CN212716404U (en) | 2020-05-29 | 2020-05-29 | Ladder stand device for overhead transmission line mountain area high outcrop foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212716404U true CN212716404U (en) | 2021-03-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020946048.2U Active CN212716404U (en) | 2020-05-29 | 2020-05-29 | Ladder stand device for overhead transmission line mountain area high outcrop foundation |
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| Country | Link |
|---|---|
| CN (1) | CN212716404U (en) |
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2020
- 2020-05-29 CN CN202020946048.2U patent/CN212716404U/en active Active
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