CN111561213B - Cross arm structure for combined electric power tower and use method - Google Patents
Cross arm structure for combined electric power tower and use method Download PDFInfo
- Publication number
- CN111561213B CN111561213B CN202010262043.2A CN202010262043A CN111561213B CN 111561213 B CN111561213 B CN 111561213B CN 202010262043 A CN202010262043 A CN 202010262043A CN 111561213 B CN111561213 B CN 111561213B
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- cross arm
- plate
- upper cross
- wall
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/02—Details
- H05B3/06—Heater elements structurally combined with coupling elements or holders
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Abstract
The invention discloses a combined cross arm structure for an electric power tower, which comprises an upper cross arm and a lower cross arm which are arranged on the tower, wherein suspension insulators are fixed on the lower side wall of the upper cross arm and the upper side wall of the lower cross arm, mounting openings are formed in the middle parts of the upper cross arm and the lower cross arm, two through openings communicated with the mounting openings are formed in the outer walls of the upper cross arm and the lower cross arm, threaded openings communicated with the mounting openings are formed in the middle parts of the upper cross arm and the lower cross arm, a U-shaped plate is inserted between the two through openings, fastening bolts matched with the threaded openings are connected to the U-shaped plate in a threaded manner, and baffles positioned on the outer sides of the suspension insulators are arranged on the two sides of the upper cross arm and the lower cross arm. According to the invention, the baffle is arranged to shield wind power, so that the influence of airflow on the suspension insulator is reduced, the stability of the whole body is ensured, and meanwhile, the heating wire is triggered to be connected with the power supply to heat when the temperature is low, so that the accumulation of accumulated snow is avoided, and the wind and snow resistance of the whole body is improved.
Description
Technical Field
The invention relates to the technical field of tower cross arms, in particular to a cross arm structure for a combined electric tower and a using method of the cross arm structure.
Background
The top of the telegraph pole is transversely fixed with angle iron, and a porcelain bottle is arranged on the angle iron and used for supporting the overhead wire. The function of the cross arm is as follows: the cross arm is an important component in a tower and is used for installing insulators and hardware fittings so as to support a conducting wire and a lightning conductor and keep a certain safety distance according to regulations.
An authorized bulletin number CN205422124U discloses a reinforced structure electric wire cross arm, which belongs to the technical field of electric power equipment and consists of a vertical reinforcing plate, a U-shaped bolt mounting hole, a horizontal reinforcing plate, a telegraph pole clamping hole, a bracket mounting hole, a clamping lug and a fastening hole. The vertical reinforcing plate and the horizontal reinforcing plate are of an integral direct structure, the U-shaped bolt mounting hole is formed in the vertical reinforcing plate surface, the telegraph pole clamping hole, the support mounting hole and the clamping lug are formed in the horizontal reinforcing plate surface, and the fastening hole is formed in the clamping lug; although birds can be prevented from nesting and certain strength is improved, the whole wind-proof and snow-proof performance is poor, the wind-proof and snow-proof performance cannot meet severe environments, the joint of the suspension insulator and the lead is easy to shake by the aid of the phoenix, and meanwhile, accumulated snow is easy to accumulate on the cross arm.
Disclosure of Invention
The invention aims to solve the problems in the background art, and provides a cross arm structure for a combined type electric power tower and a using method.
In order to achieve the purpose, the invention adopts the following technical scheme:
a cross arm structure for a combined electric power tower comprises an upper cross arm and a lower cross arm which are arranged on the tower, wherein suspension insulators are fixed on the lower side wall of the upper cross arm and the upper side wall of the lower cross arm, mounting openings are formed in the middle parts of the upper cross arm and the lower cross arm, two through openings communicated with the mounting openings are formed in the outer walls of the upper cross arm and the lower cross arm, threaded openings communicated with the mounting openings are formed in the middle parts of the upper cross arm and the lower cross arm, a U-shaped plate is inserted between the two through openings, fastening bolts matched with the threaded openings are in threaded connection with the U-shaped plate, baffle plates located on the outer sides of the suspension insulators are arranged on the two sides of the upper cross arm and the lower cross arm, connecting mechanisms are arranged between the baffle plates and the upper cross arm and the lower cross arm, two first inclined planes which are symmetrically arranged are arranged on the outer wall of the baffle plates, and round openings are formed in the middle parts of the, a sliding plate is arranged in the round opening in a sliding manner, a buffer spring is fixedly connected between the sliding plate and the inner wall of the round opening, the inner wall of the round opening is provided with an obliquely arranged air outlet communicated with the outer side of the baffle plate, the lower side wall of the upper cross arm is fixed with a liquid storage pipe, a piston is arranged on the inner wall of the liquid storage tube in a sliding manner, a return spring is fixed between the lower side wall of the piston and the lower side wall of the liquid storage tube, the space between the inner top wall of the liquid storage pipe and the upper side wall of the piston is filled with tangible liquid, the inner parts of the upper cross arm and the lower cross arm are both provided with heating wires, the lower side wall of the piston and the inner bottom wall of the liquid storage pipe are both fixed with L-shaped connecting rods, the end parts of the two connecting rods are fixed with electric contact pieces positioned on the same vertical line, one of the electric contacts is connected with the heating wire through a lead, and the other electric contact is connected with an external power supply through a lead.
Preferably, coupling mechanism is including fixing the diaphragm on the baffle inner wall, it is connected with the commentaries on classics board that is located diaphragm one side still to rotate on the inner wall of baffle, the cavity has all been seted up to the inside both ends of baffle, the spout that communicates in with the cavity is seted up to the one side that the baffle is close to mutually, it has the L template to slide in the spout, the tip threaded connection of baffle has the connecting bolt that the tip extends to in the cavity.
Preferably, two guide rods are fixed in the cavity, and one end of the L-shaped plate, which is positioned in the cavity, is slidably sleeved on the outer walls of the two guide rods.
Preferably, a reinforcing frame arranged in an X shape is fixedly connected between the two baffles positioned on the same side.
Preferably, the deformation liquid is one of alcohol and mercury.
Preferably, the side, close to each other, of each of the two transverse plates on the baffle is provided with a second inclined surface, and the thickness of each transverse plate is gradually reduced from outside to inside.
Preferably, the heating wires in the upper and lower cross arms are arranged in a multi-section and continuous bending manner.
A use method of a cross arm structure for a combined electric tower comprises the following steps:
1) sleeving the upper cross arm and the lower cross arm on a tower, inserting the U-shaped plate into the through hole, screwing the fastening bolt into the threaded hole, and tightly pressing the end part of the U-shaped plate against the outer wall of the tower to finish the fixation of the upper cross arm and the lower cross arm;
2) mounting suspension insulators on the lower side wall of the upper cross arm and the upper side wall of the lower cross arm;
3) placing a baffle plate on the outer walls of the upper cross arm and the lower cross arm, clamping the outer walls of the upper cross arm and the lower cross arm between the rotating plate and the transverse plate, screwing in a connecting bolt, sliding the L-shaped plate inwards on the outer wall of the guide rod, extruding the rotating plate by the end part of the L-shaped plate to rotate towards one side of the transverse plate, clamping the upper cross arm and the lower cross arm between the rotating plate and the transverse plate, completing the installation and fixation of the baffle plate, and ensuring that the baffle plate is positioned on the outer side of the suspension insulator;
4) fixing the reinforcing frame on the inner walls of the two baffles on the same side to finish the reinforcement of the baffles on the same side;
5) the liquid storage pipe is fixed on the lower side of the upper cross arm, and the two electric contact pieces are respectively connected with the heating wire and the external power supply through wires.
Compared with the prior art, the cross arm structure for the combined type electric power tower and the use method have the advantages that:
1. placing the baffle plates on the outer sides of the upper cross arm, the lower cross arm and the suspension insulator, enabling the cross arms and the lower cross arms to be positioned between the baffle plates, screwing in connecting bolts, enabling the L-shaped plate to slide inwards on the outer wall of the guide rod, enabling the end parts of the L-shaped plate to extrude the rotating plate to rotate towards one side of the transverse plate, enabling the upper cross arm and the lower cross arm to be clamped between the rotating plate and the transverse plate, and completing installation and fixation of the baffle plates;
2. when the air flow is contacted with the first inclined surface, the air flow flows upwards along the first inclined surface, so that the impact of the air flow on the baffle is reduced, the influence of the air flow on the suspension insulator is further reduced, and the suspension insulator is prevented from shaking;
3. when the temperature is lower, the volume of the deformation liquid contracts, the piston moves upwards under the reverse elasticity of the reset spring, the two electric contact pieces are in contact with each other, the connection between the electric heating wire and an external power supply is realized, the electric heating wire heats the upper cross arm and the lower cross arm to melt the accumulated snow, and the accumulated snow is prevented from being accumulated and increasing the burden on the upper cross arm and the lower cross arm.
Drawings
Fig. 1 is a schematic structural diagram of a cross arm structure for a combined electric tower and a use method thereof according to the present invention;
FIG. 2 is an enlarged view of the structure of portion A of FIG. 1;
fig. 3 is a side view of a cross arm structure for a combined electric power tower and a method for using the cross arm structure, wherein two baffles on the same side are connected;
FIG. 4 is an enlarged view of the structure of portion B of FIG. 3;
fig. 5 is a top view of an upper cross arm in the combined type electric power tower cross arm structure and the using method provided by the invention.
In the figure: 1 pole tower, 2 upper cross arms, 3 lower cross arms, 4 suspension insulators, 5 baffle plates, 6 round openings, 7 heating wires, 8 liquid storage pipes, 9 pistons, 10 deformation liquid, 11 return springs, 12 connecting rods, 13 electric contact pieces, 14 inclined plane I, 15 sliding plates, 16 buffer springs, 17 air outlets, 18 reinforcing frames, 19 transverse plates, 20 rotating plates, 21L-shaped plates, 22 guide rods, 23 connecting bolts, 24 mounting openings, 24U-shaped plates and 26 fastening bolts.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Referring to fig. 1-5, a combined cross arm structure for an electric power tower comprises an upper cross arm 2 and a lower cross arm 3 which are arranged on a tower 1, wherein suspension insulators 4 are fixed on the lower side wall of the upper cross arm 2 and the upper side wall of the lower cross arm 3, mounting openings 24 are respectively formed in the middle parts of the upper cross arm 2 and the lower cross arm 3, two through openings communicated with the mounting openings 24 are formed in the outer walls of the upper cross arm 2 and the lower cross arm 3, threaded openings communicated with the mounting openings 24 are also formed in the middle parts of the upper cross arm 2 and the lower cross arm 3, a U-shaped plate 25 is commonly inserted between the two through openings, fastening bolts 26 matched with the threaded openings are connected to the U-shaped plate 25 in a threaded manner, baffle plates 5 positioned on the outer sides of the suspension insulators 4 are respectively arranged on the two sides of the upper cross arm 2 and the lower cross arm 3, a reinforcing frame 18 arranged in an X shape is fixedly connected between the two baffle plates 5 positioned on the same side, the reinforcing, the bearing strength of the reinforced baffle 5 can better cope with the influence of wind power on the suspension insulator 4, and meanwhile, the baffle 5 is arranged on the outer side of the suspension insulator 4 to resist the airflow, so that the suspension insulator 4 is ensured not to shake.
Go up cross arm 2 and lower cross arm 3 cover back on shaft tower 1, insert U capable board 25 in two openings to in screw in fastening bolt 25 to the screw thread mouth, the tip of U template 25 supports tightly with the outer wall of shaft tower 1, accomplishes the fixed of upper cross arm 2 and lower cross arm 3.
The baffle 5 and the upper cross arm 2 and the lower cross arm 3 are provided with a connecting mechanism, the connecting mechanism comprises a cross plate 19 fixed on the inner wall of the baffle 5, the inner wall of the baffle 5 is also rotatably connected with a rotating plate 20 positioned on one side of the cross plate 19, the two ends of the baffle 5 are both provided with cavities, one side of the baffle 5 close to the cavity is provided with a chute communicated with the cavity, an L-shaped plate 21 is arranged in the chute, the end part of the baffle 5 is in threaded connection with a connecting bolt 23 of which the end part extends into the cavity, after the upper cross arm 2 and the lower cross arm 3 are fixed, the baffle 5 is placed on the outer sides of the upper cross arm 2, the lower cross arm 3 and the suspension insulator 4, the cross arm 2 and the lower cross arm 3 are positioned between the baffles 5, the connecting bolt 23 is screwed in, the L-shaped plate 21 slides inwards on the outer wall of the guide rod 22, the end part of the L-shaped plate 21 extrudes the rotating plate 20 to one side of the cross plate 19, and finishing the installation and fixation of the baffle 5.
Two guide rods 22 are fixed in the cavity, one end of the L-shaped plate 21, which is located in the cavity, is slidably sleeved on the outer walls of the two guide rods 22, and the L-shaped plate 21 slides on the outer wall of the guide rods 22 when sliding, so that the sliding stability of the L-shaped plate 21 is ensured.
The outer wall of the baffle 5 is provided with two inclined planes 14 which are symmetrically arranged, the inclined plane 14 is used for resisting air flow, when the air flow is contacted with the inclined plane 14, the air flow flows upwards along the inclined plane 14 to reduce the impact of the air flow on the baffle 5 and further reduce the influence of the air flow on the suspension insulator 4, the middle part of the baffle 5 is provided with a round opening 6, a sliding plate 15 is arranged in the round opening 6 in a sliding manner, a buffer spring 16 is fixedly connected between the sliding plate and the inner wall of the round opening 6, the inner wall of the round opening 6 is provided with an obliquely arranged air outlet 17 communicated with the outer side of the baffle 5, one side, close to two transverse plates 19 on the baffle 5, of each transverse plate is provided with an inclined plane II, the thickness of each transverse plate 9 is gradually reduced from outside to inside, when the air flow is large, the air flow is contacted with the sliding plate 15 to push the sliding plate 15 to move inwards to extrude the buffer spring, the influence of the air flow on the air outlet is reduced.
A liquid storage pipe 8 is fixed on the lower side wall of the upper cross arm 2, a piston 9 slides on the inner wall of the liquid storage pipe 8, a return spring 11 is fixed between the lower side wall of the piston 9 and the lower side wall of the liquid storage pipe 8, a shape-changing liquid 10 is filled between the inner top wall of the liquid storage pipe 8 and the upper side wall of the piston 9, the shape-changing liquid 10 adopts one of alcohol and mercury, the alcohol and the mercury have the characteristics of expansion with heat and contraction with cold, when the temperature is lower, the volume of the shape-changing liquid 10 is reduced, heating wires 7 are arranged inside the upper cross arm 2 and the lower cross arm 3, the heating wires 7 in the upper cross arm 2 and the lower cross arm 3 are arranged in a multi-section and continuous bending mode, the multi-section and continuous bending mode is arranged in a certain range, the length of the heating wires 7 can be increased, the effective heating length is increased, the heating is faster, connecting rods 12 arranged in an L mode are fixed on the lower side wall of the piston 9 and the inner bottom wall of, one of them electric contact piece 13 is connected with heater strip 7 through the wire, another electric contact piece 13 is connected with external power supply through the wire, when temperature is lower, the volume of deformation liquid 10 contracts, at reset spring 11's reverse elasticity, piston 9 moves up, two electric contact pieces 13 contact, realize being connected of heater strip 7 and external power supply, heater strip 7 heats upper cross arm 2 and lower cross arm 3, melt snow, avoid snow to pile up the burden that increases upper cross arm 2 and lower cross arm 3, guarantee upper cross arm 2 and lower cross arm 3's normal use.
A use method of a cross arm structure for a combined electric tower comprises the following steps:
1) sleeving the upper cross arm and the lower cross arm on a tower, inserting the U-shaped plate into the through hole, screwing the fastening bolt into the threaded hole, and tightly pressing the end part of the U-shaped plate against the outer wall of the tower to finish the fixation of the upper cross arm and the lower cross arm;
2) mounting suspension insulators on the lower side wall of the upper cross arm and the upper side wall of the lower cross arm;
3) placing a baffle plate on the outer walls of the upper cross arm and the lower cross arm, clamping the outer walls of the upper cross arm and the lower cross arm between the rotating plate and the transverse plate, screwing in a connecting bolt, sliding the L-shaped plate inwards on the outer wall of the guide rod, extruding the rotating plate by the end part of the L-shaped plate to rotate towards one side of the transverse plate, clamping the upper cross arm and the lower cross arm between the rotating plate and the transverse plate, completing the installation and fixation of the baffle plate, and ensuring that the baffle plate is positioned on the outer side of the suspension insulator;
4) fixing the reinforcing frame on the inner walls of the two baffles on the same side to finish the reinforcement of the baffles on the same side;
5) the liquid storage pipe is fixed on the lower side of the upper cross arm, and the two electric contact pieces are respectively connected with the heating wire and the external power supply through wires.
Further, unless otherwise specifically stated or limited, the above-described fixed connection is to be understood in a broad sense, and may be, for example, welded, glued, or integrally formed as is conventional in the art.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.
Claims (7)
1. A cross arm structure for a combined type electric power tower comprises an upper cross arm (2) and a lower cross arm (3) which are arranged on a tower (1), and is characterized in that suspension insulators (4) are fixed on the lower side wall of the upper cross arm (2) and the upper side wall of the lower cross arm (3), mounting openings (24) are formed in the middle parts of the upper cross arm (2) and the lower cross arm (3), two through openings communicated with the mounting openings (24) are formed in the outer walls of the upper cross arm (2) and the lower cross arm (3), threaded openings communicated with the mounting openings (24) are further formed in the middle parts of the upper cross arm (2) and the lower cross arm (3), a U-shaped plate (25) is inserted between the two through openings, fastening bolts (26) matched with the threaded openings are connected to the U-shaped plate (25) in a threaded manner, and baffles (5) positioned on the outer sides of the suspension insulators (4) are arranged on the two sides of the upper cross arm (2) and the lower cross arm (3), a connecting mechanism is arranged between the baffle (5) and the upper cross arm (2) and between the baffle (5) and the lower cross arm (3), two inclined planes I (14) which are symmetrically arranged are arranged on the outer wall of the baffle (5), a round opening (6) is formed in the middle of the baffle (5), a sliding plate (15) is arranged in the round opening (6) in a sliding manner, a buffer spring (16) is fixedly connected between the sliding plate and the inner wall of the round opening (6), and an obliquely arranged air outlet (17) communicated with the outer side of the baffle (5) is formed in the inner wall of the round opening (6);
the connecting mechanism comprises a transverse plate (19) fixed on the inner wall of the baffle plate (5), the inner wall of the baffle plate (5) is also rotatably connected with a rotating plate (20) positioned on one side of the transverse plate (19), cavities are formed in the two ends of the baffle plate (5), a sliding chute communicated with the cavities is formed in one side, close to the baffle plate (5), of the baffle plate, an L-shaped plate (21) is arranged in the sliding chute in a sliding mode, and the end part of the baffle plate (5) is in threaded connection with a connecting bolt (23) of which the end part extends into the cavities; two guide rods (22) are fixed in the cavity, and one end of the L-shaped plate (21) located in the cavity is slidably sleeved on the outer walls of the two guide rods (22).
2. The cross arm structure for the combined type electric power tower as claimed in claim 1, wherein a liquid storage pipe (8) is fixed on the lower side wall of the upper cross arm (2), a piston (9) is slid on the inner wall of the liquid storage pipe (8), a return spring (11) is fixed between the lower side wall of the piston (9) and the lower side wall of the liquid storage pipe (8), a variable liquid (10) is filled between the inner top wall of the liquid storage pipe (8) and the upper side wall of the piston (9), heating wires (7) are arranged inside the upper cross arm (2) and the lower cross arm (3), connecting rods (12) arranged in an L shape are fixed on the lower side wall of the piston (9) and the inner bottom wall of the liquid storage pipe (8), electric contact pieces (13) located on the same vertical line are fixed on the end portions of the two connecting rods (12), one of the electric contact pieces (13) is connected with the heating wire (7), the other electric contact (13) is connected with an external power supply through a lead.
3. A cross arm structure for a combined electric tower as claimed in claim 2, wherein a reinforcing frame (18) is fixedly connected between the two baffles (5) on the same side and arranged in an X shape.
4. The cross arm structure for the combined electric power tower as claimed in claim 2, wherein the deformation liquid (10) is one of alcohol and mercury.
5. The combined cross arm structure for the electric power tower as claimed in claim 1, wherein a second inclined surface is arranged on each side, close to each other, of the two transverse plates (19) on the baffle plate (5), and the thickness of the transverse plates (19) is gradually reduced from outside to inside.
6. A cross arm structure for a combined electric tower as claimed in claim 2, characterised in that the heating wires (7) in the upper cross arm (2) and the lower cross arm (3) are arranged in a multi-segment and continuous curve.
7. The use method of the cross arm structure for the combined type electric power tower as claimed in claim 3, is characterized by comprising the following steps:
1) sleeving the upper cross arm and the lower cross arm on a tower, inserting the U-shaped plate into the through hole, screwing the fastening bolt into the threaded hole, and tightly pressing the end part of the U-shaped plate against the outer wall of the tower to finish the fixation of the upper cross arm and the lower cross arm;
2) mounting suspension insulators on the lower side wall of the upper cross arm and the upper side wall of the lower cross arm;
3) placing a baffle plate on the outer walls of the upper cross arm and the lower cross arm, clamping the outer walls of the upper cross arm and the lower cross arm between the rotating plate and the transverse plate, screwing in a connecting bolt, sliding the L-shaped plate inwards on the outer wall of the guide rod, extruding the rotating plate by the end part of the L-shaped plate to rotate towards one side of the transverse plate, clamping the upper cross arm and the lower cross arm between the rotating plate and the transverse plate, completing the installation and fixation of the baffle plate, and ensuring that the baffle plate is positioned on the outer side of the suspension insulator;
4) fixing the reinforcing frame on the inner walls of the two baffles on the same side to finish the reinforcement of the baffles on the same side;
5) the liquid storage pipe is fixed on the lower side of the upper cross arm, and the two electric contact pieces are respectively connected with the heating wire and the external power supply through wires.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010262043.2A CN111561213B (en) | 2020-04-06 | 2020-04-06 | Cross arm structure for combined electric power tower and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010262043.2A CN111561213B (en) | 2020-04-06 | 2020-04-06 | Cross arm structure for combined electric power tower and use method |
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| Publication Number | Publication Date |
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| CN111561213A CN111561213A (en) | 2020-08-21 |
| CN111561213B true CN111561213B (en) | 2021-06-25 |
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| CN202010262043.2A Active CN111561213B (en) | 2020-04-06 | 2020-04-06 | Cross arm structure for combined electric power tower and use method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112622487B (en) * | 2020-11-27 | 2022-01-28 | 济宁市技师学院 | Financial management file storage device with dampproofing anticorrosive function |
| CN114718367B (en) * | 2022-05-05 | 2022-12-23 | 浙江和力电力设施有限公司 | Electric power cross arm |
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| FR2474616A1 (en) * | 1980-01-28 | 1981-07-31 | Lefebvre Michel | Slidable bracket for square section post - has screw to pivot inversely inclined collars together to give wedge effect |
| KR101200032B1 (en) * | 2011-08-04 | 2012-11-12 | 한국전력공사 | Multi band for steel crossarm |
| CN205422124U (en) * | 2016-03-16 | 2016-08-03 | 王长青 | Additional strengthening electric wire cross arm |
| CN206329136U (en) * | 2016-12-16 | 2017-07-14 | 青岛百斯特钢构有限公司 | A kind of electric force pole tower cross-arm |
| CN110060824A (en) * | 2019-05-21 | 2019-07-26 | 国家电网有限公司 | A kind of radix saposhnikoviae column support type composite insulator |
| CN209288255U (en) * | 2018-12-06 | 2019-08-23 | 盛旺汽车零部件（昆山）有限公司 | A kind of casting mould stalk heating device |
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2020
- 2020-04-06 CN CN202010262043.2A patent/CN111561213B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2474616A1 (en) * | 1980-01-28 | 1981-07-31 | Lefebvre Michel | Slidable bracket for square section post - has screw to pivot inversely inclined collars together to give wedge effect |
| KR101200032B1 (en) * | 2011-08-04 | 2012-11-12 | 한국전력공사 | Multi band for steel crossarm |
| CN205422124U (en) * | 2016-03-16 | 2016-08-03 | 王长青 | Additional strengthening electric wire cross arm |
| CN206329136U (en) * | 2016-12-16 | 2017-07-14 | 青岛百斯特钢构有限公司 | A kind of electric force pole tower cross-arm |
| CN209288255U (en) * | 2018-12-06 | 2019-08-23 | 盛旺汽车零部件（昆山）有限公司 | A kind of casting mould stalk heating device |
| CN110060824A (en) * | 2019-05-21 | 2019-07-26 | 国家电网有限公司 | A kind of radix saposhnikoviae column support type composite insulator |
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| CN111561213A (en) | 2020-08-21 |
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Effective date of registration: 20210528 Address after: 257000 Shengtuo road power supply institute, Kenli District, Dongying City, Shandong Province Applicant after: SHENGLI OILFIELD HENGYUAN ELECTRIC Co.,Ltd. Address before: 116024 Dalian University of Technology, 2 linggong Road, Ganjingzi District, Dalian, Liaoning Applicant before: Zhang Shengjun |
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