CN108425539A - Clamping device for cross arm of tower - Google Patents

Abstract

The invention discloses the clamping device for cross arm of tower, including the first L-square and the second L-square, the first L-square and the second L-square are connected through the hinge；Eyelet, the first regulating tank are provided on the horizontal segment of first L-square, the second regulating tank is provided in the vertical section of first L-square, it is provided with lower eyelet, third regulating tank on the horizontal segment of second L-square, the 4th regulating tank is provided in the vertical section of the second L-square；Further include the first bolt, the second bolt and the nut to match with the first bolt, the second bolt, the size of first bolt and the size of the first regulating tank, third regulating tank match, and the size of the second bolt and the size of the second regulating tank, the 4th regulating tank match.The present invention is not necessarily to the trepanning in metal cross arm, easy to operate, time-consuming short, and the installation effectiveness of porcelain pole arm has been significantly increased, meanwhile, the present invention can be suitable for various sizes of cross-arm, have widely promotional value.

Description

Clamping mechanism for tower cross arm

technical field

The invention relates to the field of power distribution equipment, in particular to a clamping mechanism for a tower cross arm.

Background technique

The distribution network refers to the power network that receives electric energy from the transmission network or regional power plants, distributes it through power distribution facilities or distributes it to various users step by step according to voltage, and is composed of overhead lines, cables, towers, distribution transformers, isolating switches, wireless It is a network composed of power compensators and some ancillary facilities, which plays a role in distributing electric energy in the power grid.

According to the voltage level, the distribution network can be roughly divided into three categories: high-voltage distribution network, medium-voltage distribution network and low-voltage distribution network. Among them, the 10kV distribution network belongs to the medium voltage distribution network.

The tower plays the role of supporting the transmission line and is one of the important equipment of the distribution network. In the process of lapping the drain wires on the tower, the live lap drain wires are a common work in the distribution network without power interruption, which is of great significance for improving the power supply reliability of the power department.

In the prior art, when it is necessary to install the porcelain cross-arm on the metal cross-arm of the tower, since the metal cross-arm is not preset with eyelets, it is necessary for the staff to open holes for installing the porcelain cross-arm on the cross-arm on site. However, setting eyelets on the metal cross-arm and debugging the size of the opened eyeholes will take a lot of time and the work is difficult. The installation speed of the porcelain cross-arm is slow and the installation efficiency of the staff is low; at the same time , Long-term high-altitude live working, making the safety of the staff at risk.

Contents of the invention

The purpose of the present invention is to provide a clamping mechanism for the cross-arm of the pole tower, to solve the slow installation speed of the porcelain cross-arm caused by the staff needing to open holes on the cross-arm in the prior art to install the porcelain cross-arm Inefficiencies and risks to staff safety.

The present invention realizes through following technical scheme:

The clamping mechanism used for the cross-arm of the pole and tower includes a first right-angle plate and a second right-angle plate, and the first right-angle plate and the second right-angle plate are connected by hinges; the horizontal section of the first right-angle plate is provided with upper eyelets, The first adjustment groove, the vertical section of the first right-angle plate is provided with the second adjustment groove, the horizontal section of the second right-angle plate is provided with the lower eye hole, the third adjustment groove, and the vertical section of the second right-angle plate is provided with There is a fourth adjustment groove, wherein the positions of the first adjustment groove, the second adjustment groove, the third adjustment groove and the fourth adjustment groove are configured so that when the central axis of the upper eye hole is collinear with the central axis of the lower eye hole , the first adjustment slot is aligned with the third adjustment slot, and the second adjustment slot is aligned with the fourth adjustment slot; it also includes a first bolt, a second bolt, and a nut matching the first bolt and the second bolt, The size of the first bolt matches the size of the first adjusting slot and the third adjusting slot, and the size of the second bolt matches the size of the second adjusting slot and the fourth adjusting slot.

At present, in the process of hot lapping the drain wire, due to various reasons such as different cross-arm sizes and different requirements for the installation position of the porcelain cross-arm, the cross-arm is usually not preset with eyelets for installing the porcelain cross-arm. Therefore, the staff usually needs to open holes on the metal cross-arm on the spot, and this operation will bring many problems. First of all, it takes a certain amount of time to open the eyehole, which is usually longer, because the position of the hole needs to be calculated, whether the central axis of the eyehole is inclined during the hole opening process, etc. At the same time, the staff needs to bring more equipment to climb The operation of erecting the pole tower is more complicated; secondly, after the hole opening is completed, a series of operations such as adjusting the size of the eye hole will also prolong the working hours; thirdly, because the live work is carried out on the pole tower, the complicated work process makes the safety risk of the staff larger. To sum up, setting eyelets on site is not only time-consuming and cumbersome, but also leads to low installation efficiency. At the same time, there are risks to the safety of the staff. This method has no promotion value.

In order to solve the above problems, this device provides a clamping mechanism for the cross-arm of the tower. The clamping mechanism is used for clamping on the metal cross-arm, and the ceramic cross-arm can be installed by using its preset eyelets. The installation steps It is simple and time-consuming, which is conducive to improving the work efficiency of the staff and ensuring the safety of the staff.

Specifically, the device includes a first right-angle plate and a second right-angle plate. Both the first right-angle plate and the second right-angle plate include a horizontal section and a vertical section, wherein one end surface of the horizontal section is connected to one end surface of the vertical section, and the horizontal section and the vertical section are perpendicular to each other. The reason why the structure of the right-angle plate is used is that the metal cross-arm is an angle iron. Therefore, when in use, the horizontal sections of the first and second right-angle plates clamp the horizontal section of the metal cross-arm, while the first and second right-angle plates clamp the horizontal section of the metal cross-arm. The vertical section of the two right-angle plates clamps the vertical section of the metal cross arm. Those skilled in the art should understand that in order to clamp the angle steel, the size of the second right-angle plate should be smaller than the size of the first right-angle plate to adapt to the thickness of the angle steel itself. The first right-angle plate and the second right-angle plate are connected by a hinge, and the hinge connection enables the second right-angle plate to turn over relative to the first right-angle plate. 1. A pin hole is set on the second right-angle plate, and the pin shaft passes through the pin hole to complete the hinge joint between the first right-angle plate and the second right-angle plate, or by setting a pin hole on the first right-angle plate, setting The pin shaft constitutes the hinge. Since the hinge connection itself is a prior art, it will not be repeated here and does not limit the specific hinge implementation.

The horizontal section of the first right-angle plate is provided with an upper eye hole and a first adjustment groove, the vertical section of the first right-angle plate is provided with a second adjustment groove, and the horizontal section of the second right-angle plate is provided with a lower eye hole, The third adjustment groove, the fourth adjustment groove is arranged on the vertical section of the second rectangular plate. The above and below of the upper eyelet and the lower eyelet mentioned here are because when in use, the first right-angle plate is above the second right-angle plate, and the gap between the first right-angle plate and the second right-angle plate is used to clamp To hold a metal cross arm, therefore, for ease of understanding, the eyelets on the first rectangular plate are defined as upper eyelets, and the eyelets on the second rectangular plate are defined as lower eyelets, preferably, the upper eyelet and the lower eyelet same diameter. The positions of the first adjustment groove, the second adjustment groove, the third adjustment groove, and the fourth adjustment groove are configured such that when the central axis of the upper eye hole is collinear with the central axis of the lower eye hole, the first adjustment groove is aligned with the central axis of the lower eye hole. The third adjustment groove is aligned, and the second adjustment groove is aligned with the fourth adjustment groove. The term alignment mentioned here means that when the second right-angle plate is turned over and attached to the metal cross-arm, the central axis of the upper eye hole and the lower eye hole are aligned to form a connection between the upper surface of the first right-angle plate and the second The through hole on the lower surface of the right-angle plate is used to install the porcelain cross-arm. At the same time, the first adjustment groove and the third adjustment groove are aligned to form a horizontal adjustment groove connecting the upper surface of the first right-angle plate and the lower surface of the second right-angle plate. The horizontal adjustment groove is used to install the first bolt, and the second adjustment groove and the fourth adjustment groove are aligned to form a vertical adjustment groove connecting the outer surface of the first right-angle plate and the inner surface of the second right-angle plate. to install the second bolt. Through the fastening effect of the first bolt, the second bolt and their matching nuts, the first right-angle plate and the second right-angle plate can firmly clamp the cross arm between them, and at the same time, the first bolt can restrict The clamping mechanism moves along the horizontal direction, and the second bolt can limit the clamping mechanism's movement along the vertical direction, further improving stability. The size of the first bolt matches the size of the first adjustment slot and the third adjustment slot. The first bolt can pass through the first adjustment slot and the third adjustment slot, but at the same time the first bolt should have enough diameter to clamp The mechanism forms a limit in the horizontal direction; similarly, matching the size of the second bolt with the size of the second adjustment slot and the fourth adjustment slot means that the second bolt can pass through the second adjustment slot and the fourth adjustment slot, but at the same time The second bolt should have a sufficient diameter to form a vertical limit for the clamping mechanism. Preferably, the diameter of the first bolt is slightly smaller than the widths of the first adjusting groove and the third adjusting groove, and the diameter of the second bolt is slightly smaller than the width of the second adjusting groove. Preferably, the first adjustment groove, the second adjustment groove, the third adjustment groove, and the fourth adjustment groove are all bar-shaped grooves, that is, their length is greater than their width, so that the clamping mechanism can be adapted to metal cross-arms of different sizes , for example, when the horizontal section of the metal cross-arm is long, the position of the first bolt in the first adjustment groove and the third adjustment groove can be adjusted to form a stable clamping on the metal cross-arm, and for example, when the metal cross-arm When the vertical section is longer, the position of the second bolt in the second adjustment groove and the fourth adjustment groove can be adjusted. Through each adjustment slot, the device can be applied to cross arms of various sizes, greatly improving the application range of the device, and making the device have good universality.

When in use, workers wear a full set of insulating protective equipment, enter the operating bucket of the insulating arm truck, and then slowly enter the working position through the adjustment of the insulating arm, and then insulate and shield the surrounding electrified bodies and grounding bodies that may be touched. After the shielding is completed, remove the insulation shielding at the pre-selected installation position, place the first right-angle plate on the crossarm at the installation position, and adjust the position of the first right-angle plate so that the right-angle part of the first right-angle plate, that is The connecting part of the horizontal section and the vertical section is closely attached to the right-angle part of the cross arm, and then the second right-angle plate is turned towards the direction of the cross-arm, so that the second right-angle plate is in contact with the cross-arm, the first right-angle plate and the second right-angle plate It is clamped to the metal cross arm. Afterwards, pass the first bolt through the first adjustment groove and the third adjustment groove in turn, at the same time, the side of the first bolt is close to one end face of the metal cross arm and tighten the first bolt and nut; then pass the second bolt through The second adjustment slot and the fourth adjustment slot, while the side of the second bolt is close to the other end face of the metal cross arm and the second bolt and the nut are tightened.

Through the above-mentioned structure, when the staff is carrying out the work of live wiring, there is no need to open holes on the metal cross-arm, and only need to simply clamp the metal cross-arm and tighten the bolts to complete the installation of the clamping mechanism, and the clamping mechanism on the The eyelets are preset, and there is no need to adjust the size on site. The clamping mechanism of different sizes of eyelets can be used according to different needs. The operation is simple and time-consuming, which greatly improves the installation efficiency of the porcelain cross-arm. It avoids the transitional fatigue caused by the staff wearing insulating clothing for a long time, thus reducing the operating risk of the operator; in addition, through the first adjustment slot, the second adjustment slot, the third adjustment slot, and the fourth adjustment slot, the device The utility model can be applied to metal cross-arms of different sizes, greatly improves the application range of the device, and has extensive popularization value.

As the preferred hinge mode of the first right-angle plate and the second right-angle plate in the present invention, a rotary hinge is arranged on the end surface of the horizontal section of the first right-angle plate, and the end surface of the horizontal section of the second right-angle plate is connected with the rotary hinge . That is, one end face of the horizontal section of the first right-angle plate is connected with the vertical section, and a rotary hinge is arranged on the other end face. One end face is connected with the vertical section, and the other end face is connected with the rotary hinge, and the end face connected with the rotary hinge is the hinged end of the second right-angle plate. Through the above structure, one end face of the first right-angle plate and one end face of the second right-angle plate are hinged. A pin shaft is set on the horizontal section of the plate, so that the pin hole passes through the pin shaft to complete the hinge, or the pin shaft is set on the first right angle plate, and the pin hole is set on the second right angle plate, or it can be the first right angle plate and the second right angle plate. Protruding pin holes are all arranged on the two right-angle plates, and the pin holes of the two are then hinged by pin shafts passing through the pin holes. Through the above arrangement, the hinged end of the first right-angled plate and the hinged end of the second right-angled plate are connected through a rotary hinge. Preferably, the upper eyehole is located in the area between the first adjusting slot and the hinged end of the first right-angle plate, and the lower eyehole is located in the area between the second adjusting slot and the hinged end of the second right-angled plate.

Further, the length of the horizontal section of the first right-angle plate is longer than the length of the vertical section of the first right-angle plate, and the length of the horizontal section of the second right-angle plate is longer than the length of the vertical section of the second right-angle plate. Preferably, the length of the horizontal section of the first right-angle plate is 1.5-1.8 times the length of the vertical section of the first right-angle plate.

Further, as a preferred solution for the size of each adjustment groove, the dimensions of the first adjustment groove, the second adjustment groove, the third adjustment groove and the fourth adjustment groove are the same. The same size here means that the lengths of the four adjusting grooves are the same and the widths of the grooves are the same. And the length of the first adjusting groove is 2-5 times of the width of the first adjusting groove. If the length of the adjustment groove is too long, it will easily lead to poor mechanical properties of the first right-angle plate and the second right-angle plate. If the length of the adjustment groove is too short, the applicable range of the clamping mechanism will be narrow. On the premise that the plate and the second right-angle plate have sufficient mechanical properties, the length of the adjusting groove is set to be 2 to 5 times the width of the adjusting groove.

As a preferred embodiment of the present invention, the upper surface of the horizontal section of the first right-angle plate is provided with a first bolt protection mechanism, and the first bolt protection mechanism includes a track, and two housings are slidably arranged on the track, When the two housings are in contact with each other, a protection cavity is formed inside the two housings, and the protection cavity covers the first adjustment groove; two baffle plates are arranged in the protection cavity, and a spring is arranged on the baffle plate, and the The spring connects the housing.

During the actual application, it was found that in some areas, due to environmental factors such as acid rain, the acid rain continued to contact the thread of the first bolt during long-term use, and because the first bolt was set on the horizontal section, the acid rain could not flow, only It can volatilize slowly, so when the clamping mechanism is overhauled or replaced, it will be found that the first bolt is easy to rust and get stuck in the horizontal adjustment groove, which causes great troubles for the disassembly and overhaul of the staff, and not only prolongs the working time. time, and can only damage the clamping mechanism if it cannot be removed, resulting in increased use costs and increased operational difficulty.

In order to solve the above problems, the present invention provides a first bolt protection mechanism on the upper surface of the horizontal section of the first right-angle plate. The upper surface mentioned here is for easy understanding. The horizontal section of the right angle plate is placed on the horizontal section of the metal cross arm, the lower surface of the first right angle plate is in contact with the metal cross arm, and the first bolt protection mechanism for protecting the first bolt is arranged on the upper surface.

The first bolt protection mechanism includes rails, preferably, there are two rails, and the two rails are parallel to each other, and the two rails are symmetrical about the central axis of the first adjustment groove that communicates with the two ends of the first adjustment groove. There are two housings slidingly arranged on the track, that is, the two housings can slide toward each other or back along the track. Preferably, the cross section of the track can be I-shaped, so as to prevent the staff from causing the housing to be damaged due to improper operation during work. Get off the track. Preferably, the track can be coated with alkyd enamel to reduce the corrosion of part of the track by acid rain. Since the surface of the track is simpler than the thread structure of the surface of the first bolt and the second bolt, compared with the first bolt and the second bolt The acid rain remaining in the threads is not easy to remove, and the acid rain on the surface of the track is easier to volatilize and remove through the air flowing on the surface. Therefore, the anti-acid rain measures for the track can only be protected to a certain extent by coating similar alkyd enamel. The inside of the casing is hollow, and when the two casings are in contact with each other, a protective chamber with a closed top is formed inside the two casings, and the protective chamber covers the first adjustment groove, preventing rainwater from entering the protection chamber and interacting with the first adjustment groove, The third adjusting groove, the first bolt and the nut are in contact, thereby effectively preventing acid rain from corroding the parts in the above-mentioned protective chamber. Preferably, the upper surface of the housing is inclined, and the inclination direction is that the height of one end close to the other housing is higher than the height of the end far away from the other housing. Through this setting, the upper surface of the housing will not The rainwater is accumulated, and the rainwater will not enter the protective cavity inside the shell through the gap between the two shells. Two baffles are also provided in the protection cavity, and the baffles correspond to the housing one by one. Preferably, the two baffles are respectively located at the two ends of the first adjustment slot. A spring is arranged on the baffle, one end of the spring is fixed on the baffle, and the other end is fixed on the housing. The spring is always in a stretched state, that is, the spring always provides elastic force to make the housing move toward the corresponding baffle. Preferably, a gasket is provided between the housings to further eliminate the joint gap between the two housings and prevent rainwater from falling into the protection chamber from the gap.

When disassembling the first bolt, the worker first pushes the two housings away from each other to open the protective cavity and expose the first bolt, and then loosen the first bolt to complete the disassembly of the first bolt. When a bolt is used, similarly, the two housings are pushed away from each other to open the protection cavity, exposing the first adjusting groove, and then tighten the first bolt. After the first bolt is removed or installed, the casing is released, and the two casings slide toward each other along the track under the action of the spring, and finally fit together tightly. In the working state, the two shells are always tightly fitted together to avoid the impact of bad weather such as acid rain and hail on the first bolt, which greatly improves the service life of the first bolt and prevents the first bolt from being stuck in the horizontal position after being corroded. The situation that it cannot be taken out from the adjustment groove is convenient for the staff to disassemble and overhaul the clamping mechanism, which reduces the use cost and difficulty of overhauling the clamping mechanism. At the same time, the baffle, spring and part of the track are all located in the protection chamber, which can also avoid the corrosion of these parts by acid rain.

As a preferred implementation of the first bolt protection mechanism, a placement platform is provided on the side of the exterior of the housing, and a through hole is provided on the placement platform, and a positioning pin is slidably arranged in the through hole; the second A limit hole is arranged on the upper surface of the horizontal section of the right angle plate, and the size of the limit hole matches the size of the positioning pin. The above-mentioned mechanism enables the bottom ends of the positioning pins on the placement table of the two housings to fall into the limiting hole under the action of gravity when the positioning pin slides to the limiting hole when the staff pulls apart the two housings , so that the shell will not move on the track under the action of the elastic force, so that when the staff installs or removes the first bolt, it is not necessary to keep the two shells open by hand, which further simplifies the operation steps and improves the Work efficiency and work safety.

Further, the housing is provided with a toggle block. Since the worker wears insulating gloves during operation, the toggle block is beneficial for the worker to push away the two housings to expose the first bolt or the first adjusting groove, which further facilitates the worker to install or remove the first bolt.

As another preferred embodiment of the present invention, a second bolt protection mechanism is provided on the outer surface of the vertical section of the first right-angle plate, and the second bolt protection mechanism includes a fixing plate located above the second adjustment slot , the hinge on the fixed plate is connected with a turnover plate. The flipping plate has an L-shaped structure, and the outer surface of the vertical section of the first right-angled plate is provided with a socket above the fixing plate, and the socket is used to place the movable end of the flipping plate. Based on the same reasons for designing the first bolt protection mechanism, the present invention is designed with a second bolt protection mechanism. However, unlike the case of the first bolt, since the vertical section is in a vertical state during operation, the acid rain will gradually slide down under the action of gravity and finally break away from the vertical section. Therefore, it is only necessary to reduce the contact between the second bolt and the acid rain opportunity. In order to reduce the overall cost and weight of the clamping mechanism, the second bolt protection mechanism includes a fixed plate fixed on the outer wall of the vertical section of the second rectangular plate, the fixed plate is located above the second adjustment slot, preferably, the fixed plate is parallel to the horizontal plane , so that the fixed plate itself has a certain rain-shielding effect. The other end of the fixing plate is hinged to an L-shaped overturning plate, and the hinged connection can be in various ways mentioned above, which will not be repeated here. Through the hinge connection, one end of the flip plate can be turned up or down around the fixed plate. In the rainproof state, the inner wall of the vertical section of the flip plate and the lower surface of the fixed plate form a protective cavity to protect the second bolt and the third adjustment groove. , in the overhaul state, the staff can rotate the overturning plate around the hinged end, and insert the movable end of the overturning plate into the jack, after completing the installation or removal of the second bolt, put down the overturning plate, so that it is opposite to the second bolt and The third adjustment slot is protected. Through the above structure, the service life of the second bolt is improved, and the situation that the second bolt is corroded and stuck in the vertical adjustment groove and cannot be taken out is further facilitated for the staff to disassemble and repair the clamping mechanism, and further reduces the clamping mechanism. Cost of use and difficulty of maintenance operations.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. The present invention enables the staff to install the clamping mechanism simply by clamping the metal cross-arm and tightening the bolts without opening holes in the metal cross-arm when carrying out live wire-taking operations, and the clamping mechanism is installed The eyelets are preset, and there is no need to adjust the size on site. The clamping mechanism of different sizes of eyelets can be used according to different needs. The operation is simple and time-consuming, which greatly improves the installation efficiency of the porcelain cross-arm. Since the transitional fatigue caused by the staff wearing insulating clothing for a long time is avoided, the operating risk of the operator is reduced; in addition, through the first adjustment slot, the second adjustment slot, the third adjustment slot, and the fourth adjustment slot, the The device can be applied to metal cross-arms of different sizes, which greatly improves the application range of the device and has extensive promotion value;

2. The present invention uses the first bolt protection mechanism. In the working state, the two shells are always tightly fitted together, avoiding the influence of bad weather such as acid rain and hail on the first bolt, and greatly improving the service life of the first bolt , to avoid the situation that the first bolt is stuck in the horizontal adjustment groove and cannot be taken out after being corroded, it is convenient for the staff to disassemble and repair the clamping mechanism, and reduces the use cost and difficulty of maintenance of the clamping mechanism;

3. The present invention improves the service life of the second bolt through the second bolt protection mechanism, avoids the situation that the second bolt is stuck in the vertical adjustment groove after being corroded and cannot be taken out, and further facilitates the disassembly and maintenance of the clamping mechanism by the staff. The use cost and maintenance work difficulty of the clamping mechanism are further reduced.

Description of drawings

The drawings described here are used to provide a further understanding of the embodiments of the present invention, constitute a part of the application, and do not limit the embodiments of the present invention. In the attached picture:

Fig. 1 is the structural representation of the specific embodiment of the present invention;

Fig. 2 is the installation schematic diagram under the working state of the specific embodiment of the present invention;

Fig. 3 is the structural representation of the specific embodiment of the present invention;

Fig. 4 is a top view of the first bolt protection mechanism in the specific embodiment of the present invention.

Marks and corresponding parts names in the attached drawings:

1-first right-angle plate, 2-second right-angle plate, 3-rotary hinge, 4-first adjustment slot, 5-second adjustment slot, 6-third adjustment slot, 7-fourth adjustment slot, 8-up Eyelet, 9-lower eyehole, 10-crossarm, 11-first bolt, 12-second bolt, 13-housing, 14-toggle block, 15-locating pin, 16-placement table, 17-block Plate, 18-spring, 19-limiting hole, 20-fixed plate, 21-overturn plate, 22-jack, 23-track.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the examples and accompanying drawings. As a limitation of the present invention.

Example 1:

The clamping mechanism for the tower cross arm shown in Figure 1 and Figure 2 includes a first right-angle plate 1 and a second right-angle plate 2, and the first right-angle plate 1 and the second right-angle plate 2 are connected by a hinge; The horizontal section of the right-angle plate 1 is provided with upper eyelet 8 and the first adjustment groove 4, the vertical section of the first right-angle plate 1 is provided with the second adjustment groove 5, and the horizontal section of the second right-angle plate 2 is provided with The lower eyelet 9, the third adjustment groove 6, the fourth adjustment groove 7 is arranged on the vertical section of the second rectangular plate 2, wherein, the first adjustment groove 4, the second adjustment groove 5, the third adjustment groove 6, the first adjustment groove The positions of the four adjustment grooves 7 are configured such that when the central axis of the upper eye hole 8 is collinear with the central axis of the lower eye hole 9, the first adjustment groove 4 is aligned with the third adjustment groove 6, and the second adjustment groove 4 is aligned with the third adjustment groove 6. The groove 5 is aligned with the fourth adjusting groove 7; it also includes a first bolt 11, a second bolt 12 and nuts matched with the first bolt 11 and the second bolt 12, and the size of the first bolt 11 is consistent with that of the first adjusting groove 4. The size of the third adjustment slot 6 matches, the size of the second bolt 12 matches the size of the second adjustment slot 5 and the fourth adjustment slot 7; the end surface of the horizontal section of the first right angle plate 1 A rotary hinge 3 is provided, and the end face of the horizontal section of the second right-angle plate 2 is connected with the rotary hinge 3; the length of the horizontal section of the first right-angle plate 1 is greater than the length of the vertical section of the first right-angle plate 1, so The length of the horizontal section of the second rectangular plate 2 is greater than the length of the vertical section of the second rectangular plate 2; the first adjustment groove 4, the second adjustment groove 5, the third adjustment groove 6, the fourth adjustment groove 7 The dimensions are the same; the length of the first adjusting groove 4 is 2 to 5 times the width of the first adjusting groove 4 .

As the preferred size of the present invention, the thickness of the first right-angle plate 1 and the second right-angle plate 2 is 4mm, and the groove length of the first adjustment groove 4, the second adjustment groove 5, the third adjustment groove 6, and the fourth adjustment groove 7 is 60mm, the length of the horizontal section of the first right-angle plate 1 is 200mm, the length of the vertical section of the first right-angle plate 1 is 120mm, the width of the first right-angle plate 1 is 60mm, and the diameter of the upper eyelet 8 and the lower eyelet 9 is 16mm .

When in use, workers wear a full set of insulating protective equipment, enter the operating bucket of the insulating arm truck, and then slowly enter the working position through the adjustment of the insulating arm, and then insulate and shield the surrounding electrified bodies and grounding bodies that may be touched. After the shielding is completed, the insulation shielding on the pre-selected installation position is removed, the first right-angle plate 1 is placed on the cross-arm 10 at the installation position, and the position of the first right-angle plate 1 is adjusted so that the first right-angle plate 1 The right-angle part is closely attached to the right-angle part of the cross arm 10, and then the second right-angle plate 2 is turned over in the direction of the cross arm 10, so that the second right-angle plate 2 is in contact with the cross arm 10, the first right-angle plate 1 and the second right-angle plate 2 The cross arm 10 is clamped. Afterwards, pass the first bolt 11 through the first adjusting groove 4 and the third adjusting groove 6 in turn, and at the same time, the side surface of the first bolt 11 is close to an end face of the cross arm 10 and the first bolt 11 and the nut are tightened; The two bolts 12 pass through the second adjusting groove 5 and the fourth adjusting groove 7 in sequence, and at the same time, the side surface of the second bolt 12 is close to the other end surface of the cross arm 10 and the second bolt 12 and the nut are tightened.

Through the above-mentioned structure, the worker does not need to open holes on the cross-arm 10 when carrying out the live-wire operation, and only needs to simply clamp the cross-arm 10 and tighten the bolts to complete the installation of the clamping mechanism, and the clamping mechanism on the The eyelets are preset, and there is no need to adjust the size on site. The clamping mechanism of different sizes of eyelets can be used according to different needs. The operation is simple and time-consuming, which greatly improves the installation efficiency of the porcelain cross-arm. It avoids the transitional fatigue caused by the staff wearing insulating clothing for a long time, thus reducing the operating risk of the operator; in addition, through the first adjustment slot 4, the second adjustment slot 5, the third adjustment slot 6, and the fourth adjustment slot 7 , so that the device can be applied to cross-arms 10 of different sizes, greatly improving the application range of the device, and having extensive popularization value.

Example 2:

As shown in Figure 3 and Figure 4, on the basis of Embodiment 1, this embodiment is further provided with a first bolt protection mechanism and a second bolt protection mechanism. Specifically, a first bolt protection mechanism is provided on the upper surface of the horizontal section of the first right-angle plate 1, and the first bolt protection mechanism includes a track 23 on which two housings 13 are slidably arranged. When the housings 13 are in contact with each other, a protection cavity is formed inside the two housings 13, and the protection cavity covers the first adjustment groove 4; two baffles 17 are arranged in the protection cavity, and a spring 18 is arranged on the baffles 17 , the spring 18 is connected to the housing 13; the outer side of the housing 13 is provided with a placement platform 16, and the placement platform 16 is provided with a through hole, and a positioning pin 15 is slidably arranged in the through hole; The upper surface of the horizontal section of the first right angle plate 1 is provided with a limit hole 19, the size of the limit hole 19 matches the size of the positioning pin 15; the housing 13 is provided with a toggle block 14; The outer surface of the vertical section of the first right-angle plate 1 is provided with a second bolt protection mechanism, and the second bolt protection mechanism includes a fixed plate 20 positioned above the second adjustment groove 5, and the fixed plate 20 is hingedly connected with Turnover plate 21; the turnover plate 21 is an L-shaped structure, and the outer surface of the vertical section of the first rectangular plate 1 is provided with a jack 22 above the fixed plate 20, and the jack 22 is used to place the turnover plate 21 the active end.

When installing or dismounting the first bolt 11, by moving the toggle block 14, the two housings 13 are pushed apart along the track 23 to expose the inner protection cavity of the housing 13. When the housing 13 moves to the vicinity of the limit hole 19, The positioning pin 15 on the placement table 16 falls into the limit hole 19 due to gravity, so that the housing 13 no longer moves on the track 23. After the housing 13 is positioned, the staff can complete the installation or removal of the first bolt 11 After the work is completed, the positioning pin 15 is lifted, and the two shells 13 move with each other under the action of the spring 18 and finally fit together tightly to form a protective cavity with a closed top. The plate 17, the spring 18 and the first regulating tank 4 are protected to prevent acid rain from corroding the above parts. When installing or dismounting the second bolt 12, turn over the turning plate 21 and insert the movable end of the turning plate 21 into the jack 22, and then complete the installation or removal of the second bolt 12. After completion, put down the turning plate 21, turn the plate The protection cavity formed by the inner wall of the vertical section of 21 and the lower surface of the fixing plate 20 can protect the second bolt 12 and the third adjusting groove 6 to a certain extent.

Through the above mechanism, the service life of the first bolt 11 and the second bolt 12 is greatly improved, and the first bolt 11 and the second bolt 12 are prevented from being stuck in the adjustment groove after being corroded and cannot be taken out, which is convenient for the staff to disassemble and repair the clamping mechanism , which further reduces the use cost and maintenance difficulty of the clamping mechanism.

"First", "second", "third", "fourth" and so on (such as the first bolt protection mechanism, the second bolt protection mechanism, etc.) used herein are only for the purpose of describing the corresponding parts clearly The distinction is not intended to limit any order or emphasize importance, etc. In addition, the term "connection" used herein may be directly connected or indirectly connected via other components unless otherwise specified.

The specific embodiments described above have further described the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Protection scope, within the spirit and principles of the present invention, any modification, equivalent replacement, improvement, etc., shall be included in the protection scope of the present invention.

Claims (10)

1. The clamping mechanism for the cross-arm of the pole and tower is characterized in that it includes a first right-angle plate (1) and a second right-angle plate (2), and the first right-angle plate (1) and the second right-angle plate (2) Connected by a hinge; the horizontal section of the first right-angle plate (1) is provided with an upper eyelet (8) and the first adjustment slot (4), and the vertical section of the first right-angle plate (1) is provided with a second adjustment slot (5), the horizontal section of the second right-angle plate (2) is provided with the lower eyelet (9), the third adjustment groove (6), and the vertical section of the second right-angle plate (2) is provided with the fourth adjustment groove (7), wherein, the positions of the first adjustment groove (4), the second adjustment groove (5), the third adjustment groove (6), and the fourth adjustment groove (7) are configured as, when the upper eyelet (8) When the central axis of the center axis is collinear with the central axis of the lower eyelet (9), the first adjustment groove (4) is aligned with the third adjustment groove (6), and the second adjustment groove (5) is aligned with the fourth adjustment groove (7) alignment; also include the first bolt (11), the second bolt (12) and the nuts matched with the first bolt (11), the second bolt (12), the size of the first bolt (11) Match the size of the first adjustment slot (4) and the third adjustment slot (6), the size of the second bolt (12) is the same as the size of the second adjustment slot (5) and the fourth adjustment slot (7) match. 2. The clamping mechanism for pole tower cross arm according to claim 1, characterized in that, a rotary hinge (3) is arranged on the end face of the horizontal section of the first right-angle plate (1), and the second The end face of the horizontal section of the rectangular plate (2) is connected with the rotary hinge (3). 3. The clamping mechanism for the pole tower cross arm according to claim 1 or 2, characterized in that, the length of the horizontal section of the first right angle plate (1) is greater than the vertical length of the first right angle plate (1). The length of the section, the length of the horizontal section of the second right-angle plate (2) is greater than the length of the vertical section of the second right-angle plate (2). 4. The clamping mechanism for the pole and tower cross arm according to claim 1 or 2, characterized in that the first adjustment groove (4), the second adjustment groove (5), and the third adjustment groove (6) , The size of the 4th regulating groove (7) is identical. 5. The clamping mechanism for the pole and tower cross arm according to claim 4, characterized in that the length of the first adjustment groove (4) is 2 to 5 times the width of the first adjustment groove (4). 6. The clamping mechanism for the pole tower cross arm according to claim 1, characterized in that, the upper surface of the horizontal section of the first right-angle plate (1) is provided with a first bolt protection mechanism, and the first bolt protection mechanism The mechanism includes a track (23), on which two housings (13) are slidably arranged, and when the two housings (13) are in contact with each other, a protective chamber is formed inside the two housings (13), The protection cavity covers the first adjustment groove (4); two baffles (17) are arranged in the protection cavity, and a spring (18) is arranged on the baffle (17), and the spring (18) is connected to the casing (13). 7. The clamping mechanism for the pole and tower cross arm according to claim 6, characterized in that, a placing platform (16) is arranged on the outer side of the housing (13), and the placing platform (16) A through hole is provided, and a positioning pin (15) is slidably arranged in the through hole; a limiting hole (19) is arranged on the upper surface of the horizontal section of the first right-angle plate (1), and the limiting hole (19) ) size matches the size of the positioning pin (15). 8. The clamping mechanism for the pole and tower cross arm according to claim 6 or 7, characterized in that, a toggle block (14) is arranged on the housing (13). 9. The clamping mechanism for the pole tower cross arm according to claim 1 or 6, characterized in that, a second bolt protection mechanism is provided on the outer surface of the vertical section of the first right-angle plate (1), The second bolt protection mechanism includes a fixed plate (20) located above the second adjustment slot (5), and a turning plate (21) is hingedly connected to the fixed plate (20). 10. The clamping mechanism for the pole and tower cross arm according to claim 9, characterized in that, the flip plate (21) is an L-shaped structure, and the outer portion of the vertical section of the first right-angle plate (1) An insertion hole (22) located above the fixing plate (20) is opened on the surface, and the insertion hole (22) is used for placing the movable end of the turning plate (21).