Cross arm convenient to install and auxiliary installation device

Abstract

The invention relates to the field of electric power maintenance auxiliary tools, in particular to a cross arm convenient to install and an auxiliary installation device.The cross arm convenient to install comprises an auxiliary frame, the width size of the auxiliary frame is equal to the width size of a frame body, the top end of the auxiliary frame is provided with an insertion pin matched with an insertion hole in the frame body, and the insertion pin is inserted into the insertion hole to fix the frame body; the clamping ring is arranged in the auxiliary frame, and a sliding piece is arranged on the inner wall of the clamping ring; the rope hooks are symmetrically arranged at the two ends of the auxiliary frame, the two rope hooks are vertically arranged, and winding ropes are arranged on the rope hooks; the foundation plate is horizontally arranged under the auxiliary frame and is fixed in position; the rolling wheels are symmetrically arranged at the two ends of the foundation plate, the two rolling wheels and the two rope hooks are arranged in a vertical plane, and the rolling wheels and the rope hooks are connected through rolling ropes; the two winding wheels are arranged under the two rope hooks. The method has the effect of improving the mounting speed and the mounting precision of the cross arm on the telegraph pole.

Description

Technical Field

[0001] The present application relates to the field of power maintenance auxiliary tools, and in particular to a cross arm and an auxiliary installation device that are easy to install. Background Art

[0002] At present, in the process of power transmission network construction, crossarms are widely used as one of the important components. The crossarms on the poles are the horizontal fixing mechanisms used to support the conductors and lightning conductors in the power lines. They are installed with insulators and hardware to maintain the specified safety distance of the conductors.

[0003] Under the existing technology, crossarms are generally fixed to the towers by bolts. Although this installation method is relatively strong, it has problems such as long installation time, high precision requirements and difficulty in adjustment in actual operation. Specifically, the installer needs to manually install the crossarm in the preset position, and repeatedly adjust and ensure the alignment of the crossarm in the horizontal, vertical and vertical directions. When the transmission line is laid remotely, it is necessary to ensure that the crossarms on adjacent poles remain parallel, which places high demands on the accuracy of the installation position and angle of the crossarms. Therefore, the traditional method of repeatedly manually measuring and positioning, and visually measuring the angle and height is inefficient.

[0004] In addition, the existing improved designs for crossarms use snap-on or latch-type connections to simplify the installation process, but these methods still cannot meet the needs of fast installation and removal, and perform poorly in complex and changing working environments. In view of the above-mentioned related technologies, any design of a new crossarm that can ensure both installation speed and installation accuracy has become an urgent problem to be solved. Summary of the invention

[0005] In order to improve the installation speed and installation accuracy of the cross arm on the electric pole, the present invention provides a cross arm and an auxiliary installation device which are easy to install.

[0006] On the one hand, the present invention provides a cross arm that is easy to install, which adopts the following technical solution: A cross arm and auxiliary installation device that is easy to install, comprising two frames with the same structure and hinged at one side edge of the end, and a connecting assembly is provided at the hinged end of the two frames to connect the two frames; A plurality of snap rings are arranged facing each other inside the two frames; A clamping rod is arranged inside the frame, and a plurality of clamping rings are slidably connected to the clamping rod; a sliding member for sliding the clamping rings is arranged inside the clamping rod; The bottom sides of the two frames are provided with plugging holes along the length direction of the frames.

[0007] By adopting the above technical solution, the two frames of the same structure are hinged and spliced ​​at the opposite ends to form a cross arm as a whole, which simplifies the traditional method of separately plugging the two ends of the cross arm into the electric pole and then tightening the bolts to fix the joint, and simplifies it to hinge splicing, which can greatly improve the splicing speed; Specifically, the installer disassembles the connection components at both ends of the cross arm, and the two ends of the cross arm rotate around the hinge side. The clamp rings between the two cross arms separate with the rotation of the two ends of the cross arm to form an opening at a certain angle. The width of the opening is adapted to the diameter of the electric pole, so that the installer can insert the cross arm into the electric pole. After inserting into the electric pole, the two ends of the cross arm rotate around the hinge side and connect. The installer reconnects the cross arm into a straight pole structure through the connection component. At this time, the cross arm is not fixedly mounted on the electric pole, and can be adjusted in height by sliding vertically along the electric pole. The two clamps on the cross arm rotate synchronously with the two ends of the cross arm. With the engagement of the cross arm, the two clamps are symmetrically distributed. The clamps are fed toward each other with the sliding member so that the two ends of the clamps are engaged to form a horizontal ring covering the pole body. The sliding member maintains the feeding state so that the two ends of the clamps are pressed against the surface of the pole body. The sliding member stops feeding and remains in this position so that the clamps are pressed against each other to complete the fixation. A plug-in hole is provided at the bottom edge of the cross arm for connecting and fixing the cross arm with the auxiliary installation assembly.

[0008] Optionally, the sliding member includes: A screw rod is rotatably connected to the inner walls of both ends of the clamp rod in parallel to the length direction of the clamp rod, and a screw rod slider is threadedly connected on the screw rod; the screw rod extends out of the end of the clamp rod; the top and bottom sides of the screw rod slider extend out of the surface of the clamp rod and are connected to the clamp ring; The top and bottom side walls of the clamping rod are both provided with sliding grooves adapted to the screw rod slider.

[0009] By adopting the above technical solution, a screw drive method is adopted, and the screw rotates to drive the screw slider to slide along the screw, and the two sides of the screw slider slide against the inner wall of the clamping rod. When the screw rotates, the screw slider is restricted by the inner walls of the two opposite sides of the clamping rod and slides along the length direction of the inside of the clamping rod, thereby driving the above-mentioned clamping ring to slide; In the above scheme, the slide groove is vertically opened so that the clamping rod is divided into two parts, and the side walls of the clamping rod on two opposite sides should be fixed to the opposite sides of the frame to avoid the slide groove reducing the fixing capacity of the clamping rod; The connection method of the screw slider transmission has the advantages of high stability and strong self-locking ability. After the front end clamping ring is fixed, the screw slider can stop rotating and be fixed at the current angle.

[0010] On the other hand, the present invention provides an auxiliary installation device for a cross arm that is easy to install, which adopts the following technical solution: An auxiliary installation device for a cross arm that is easy to install, comprising: The auxiliary frame has a width dimension equal to that of the frame body, and a plug pin adapted to the plug hole on the frame body is provided at the top of the auxiliary frame, and the plug pin is plugged into the plug hole to fix the frame body; A clamp ring is arranged inside the auxiliary frame, and a sliding member is arranged on the inner wall of the clamp ring; Rope hooks are symmetrically arranged at two ends of the auxiliary frame, the two rope hooks are vertically arranged, and a winding rope is arranged on the rope hooks; A base plate is horizontally arranged directly below the auxiliary frame and is fixed in position; The reels are symmetrically arranged at the two ends of the base plate, the two reels and the two rope hooks are arranged in the one vertical plane, and the reels and the rope hooks are connected by the reel; the two reels are arranged directly below the two rope hooks.

[0011] By adopting the above technical solution, the auxiliary frame and the base plate are the main structures of the auxiliary installation device of the cross arm, wherein the base plate is fixed at the bottom of the electric pole to play a bottom support role, and the auxiliary frame is raised and lowered along the electric pole. During the lifting process of the auxiliary frame, the reel on the base plate is connected to the rope hook on the auxiliary frame through the reel; under the action of the reel, the reel remains in a straightened state, and since the reel at both ends of the auxiliary frame and the base plate remains straight, the two ends of the auxiliary frame remain horizontal during the rising process, and no tilt in the vertical plane occurs; Furthermore, the winding rope is kept in a straightened state, and the rising height of the current auxiliary frame can be calculated by measuring the extended length of the winding rope and coordinating with the original extended length of the winding rope, that is, the technician can instantly know the current height of the auxiliary frame through the extended length data of the winding rope; the auxiliary frame is provided with a plug pin corresponding to the plug hole provided on the frame body, and the technician installs the cross arm on the auxiliary frame before the auxiliary frame rises, and the plug pin is connected with the plug hole to fix the cross arm on the auxiliary frame, and the cross arm rises stably with the auxiliary frame; The sliding mode of the auxiliary frame is realized by the sliding piece on the clamp ring, the inner wall of the clamp ring is pressed against the electric pole and slides along the electric pole; the auxiliary frame is driven to rise and fall by the high friction force; It should be noted that steel rope is generally chosen for winding rope in practical applications.

[0012] Optionally, the auxiliary frame is composed of a frame body hinged at both ends; correspondingly, the clamp ring is composed of multiple parts with the same structure, and the structures of the multiple clamp rings are symmetrically arranged at two parts of the auxiliary frame.

[0013] By adopting the above technical solution, the hinged connection of the frame parts at both ends of the auxiliary frame allows the frame parts at both ends of the auxiliary frame to rotate to a state with an angle, and the middle clamping ring part is opened to enable the auxiliary frame to be clamped with the pole body. The auxiliary frame is opened by hinged means, which improves the traditional manual installation sequence of plug-in, installation, and bolt connection, thereby improving installation efficiency.

[0014] Optionally, the sliding member includes a plurality of vertically arranged rollers, the rollers are rotatably connected to the inner wall of the clamp ring, and are horizontally distributed at equal angles along the circumference of the clamp ring, and the wheel surfaces of the rollers abut against the surface of the utility pole.

[0015] By adopting the above technical solution, the roller is the main structural member for realizing the lifting and lowering of the auxiliary frame. The roller surface is pressed against the surface of the electric pole body, increasing the friction between the roller surface and the surface of the electric pole body. The pressing makes the roller prevent the auxiliary frame from falling due to the roller slipping, that is, the lifting and lowering of the auxiliary frame must be realized by the rotation of the roller body; Thus, the auxiliary frame can be raised and lowered by rotating the roller in the positive and negative directions. Combined with the measurement of the extension length of the winding rope, the auxiliary frame equipped with the cross arm can be easily lifted to the preset position, thereby improving the lifting efficiency of the auxiliary frame.

[0016] Optionally, the clamping ring is provided with a driving member on the opposite sides of the plurality of rollers corresponding to each other, so as to drive the rollers to slide radially.

[0017] By adopting the above technical solution, the driving member drives the multiple clamping rings to slide toward or away from each other synchronously, and the multiple clamping rings slide toward each other to reduce the radius of the clamping ring distribution circle, so that the roller surface is pressed against the electric pole, and the driving member maintains the driving state, so that the roller on the clamping ring continues to press against the electric pole; When the cross arm is installed and the auxiliary frame is lowered, in order to prevent the auxiliary frame from sliding down uncontrollably under the action of gravity, the driving member should remain in the driving state so that the auxiliary frame can only be lowered by the rolling of the rollers.

[0018] Optionally, the base plate is composed of two hinged plate structures of the same area.

[0019] By adopting the above technical solution, the hinged structure of the base plate is the same as the auxiliary frame and the cross arm, and the center part of the base plate is divided into two, providing a structure for the base plate to be clamped to the electric pole; Specifically, the base plate rotates around the two ends of the hinge structure at a certain angle, so that the opened base plate can be clamped with the electric pole.

[0020] Optionally, a plurality of cylindrical walls are vertically formed in the central portion of the base plate, and the plurality of cylindrical walls are symmetrically distributed on two hinged components of the base plate, and the plurality of cylindrical walls are connected to the base plate by sliding toward each other.

[0021] By adopting the above technical solution, the cylinder wall in the center part of the base plate forms a cylindrical structure for covering the electric pole. The cylinder walls slide toward each other to reduce the distance between the cylinder walls, so that the inner wall of the cylinder wall is pressed against the electric pole, and the friction force is used to fix the base plate at a preset height. Generally, the base plate is placed on the ground, at the bottom of the electric pole, and the base plate is fixed by the cylinder wall so that the base plate is stably placed, providing a structural basis for straightening the rope.

[0022] In summary, the present application includes at least one of the following beneficial technical effects: 1. By setting up two hinged frames and connecting components, the cross arm can be easily unfolded and folded during the installation process, which significantly reduces the operating difficulty and time cost of the cross arm installation operation, and improves the installation efficiency and operation safety; 2. The sliding design of the clamping ring and the clamping rod, especially the combination of the screw rod and the screw rod slider, realizes the precise adjustment of the clamping ring on the clamping rod. The position of the clamping ring can be accurately adjusted according to specific needs. The high stability and high self-locking property of the screw rod slider are used to enhance the adaptability and stability of the cross arm. 3. The plug-in holes set on the bottom side and the plug-in pin design of the auxiliary installation device ensure that the crossarm can be quickly and accurately fixed at the preset position, avoiding the cumbersome steps in the traditional fixing method, further simplifying the installation process and greatly reducing labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0024] Figure 2 It is a structural schematic diagram used to highlight the snap ring in the embodiment of the present application.

[0025] Figure 3 It is a structural schematic diagram used to highlight the plug pin in the embodiment of the present application.

[0026] Figure 4 It is a structural schematic diagram made to highlight the auxiliary installation device in the embodiment of the present application.

[0027] Figure 5 It is a structural schematic diagram used to highlight the base plate in the embodiment of the present application.

[0028] Figure 6 It is a structural schematic diagram made to highlight the internal structure of the auxiliary frame in the embodiment of the present application.

[0029] Explanation of the reference numerals: 1. cross arm; 11. frame; 12. clamping ring; 13. clamping rod; 14. screw slider; 15. slide groove; 16. plug-in hole; 2. base plate; 21. reel; 22. arc plate; 23. cylinder wall; 24. reel; 3. auxiliary frame; 31. rope hook; 32. plug pin; 33. roller; 34. clamping ring; 35. electric cylinder; 4. electric pole. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-6 This application is described in further detail.

[0031] First, the embodiment of the present application discloses a cross arm that is easy to install. Figure 1A cross arm that is easy to install includes two frames 11. The two frames 11 have the same structure and are both rectangular frames with a length greater than the width. The vertical side edges of the two frames 11 facing each other are hinged, so that the two frames 11 can rotate around the hinged side and can be at any reasonable angle; semi-circular arc grooves of the same diameter are symmetrically opened on the facing ends of the two frames 11. As the two frames 11 rotate around the hinged side, the facing ends are fitted into a whole to form a cross arm 1, and the two semi-circular arc grooves are spliced ​​into a circular groove with a diameter greater than the radius of the horizontal section of the pole 4; thus, the technicians clamp the cross arm 1 on the main body of the pole 4 through the opening and closing process of the middle part of the cross arm 1 of the hinged structure. In the above process, connecting components are arranged on the facing ends of the two frames 11 constituting the crossarm 1 to fix the two frames 11 constituting the crossarm 1; specifically, the connecting components include connecting plates formed on a vertical side edge of the facing ends of the two frames 11 away from the hinged side, and the two connecting plates are arranged in parallel and perpendicular to the length direction of the frames 11. Bolt grooves are penetrated in the centers of the plate surfaces of the two connecting plates, and bolts are inserted and nuts are installed to fix the two frames 11.

[0032] Reference Figure 1 and Figure 2 A clamping rod 13 is fixedly connected inside the frame 11 in parallel with the length direction of the frame 11. The length of the clamping rod 13 is smaller than the length of the frame 11, so that the clamping rod 13 can be completely accommodated in the frame 11. The inside of the clamping rod 13 is hollowed out so that the clamping rod 13 is barrel-packed. A screw rod is rotatably connected inside the clamping rod 13 in parallel with the length direction of the clamping rod 13. A screw rod slider 14 is slidably connected and penetrated on the screw rod. The size of the slider is adapted to the size of the clamping rod 13 and is constrained by the structure of the opposite side walls of the clamping rod 13. Therefore, the screw rod is rotated and the screw rod slider 14 slides along the inside of the clamping rod 13. A slide groove 15 is provided in the middle part of the top side wall and the bottom side wall of the clamping rod 13 to connect the inside and the outside of the clamping rod 13, and the slide groove 15 extends along the length direction of the clamping rod 13 to the opposite ends of the two clamping rods 13; two slide grooves 15 extend from the top and bottom sides of the slider, and two snap rings 12 are formed on the part extending from the two slide grooves 15. The two snap rings 12 have the same structure and are vertically distributed in a vertical plane. They slide toward each other along the slide groove 15 as the slider is fed; the annular surface of multiple snap rings 12 is semicircular, so that as the snap rings 12 are fed, the snap rings 12 at the opposite ends of the two clamping rods 13 are pressed against the surface of the main body of the electric pole 4, stopping the rotation of the screw rod, and the snap rings 12 are fixed at this position and kept in a pressed state by the self-locking property of the screw rod.

[0033] Reference Figure 2 In this embodiment, in order to enable the technician to rotate the screw rod, the screw rod extends out of the opposite ends of the two clamping rods 13, and a knob is installed. The technician turns the knob to realize the rotation of the screw rod.

[0034] Reference Figure 1 and Figure 2The opening of the slide groove 15 reduces the structural area of ​​the clamping rod 13, that is, reduces the structural stability of the clamping rod 13. In order to maintain the structural stability under the condition of supporting the power transmission line for a long time, the two relative vertical sides of the clamping rod 13 are connected to the frame 11 through a steel rod structure to improve the structural stability of the clamping rod 13.

[0035] Reference Figure 3 A plurality of plug holes 16 are provided on the edges of the two length sides of the bottom side of the cross arm 1 , and the plug holes 16 are evenly spaced along the length sides of the frame body 11 .

[0036] The implementation principle of a cross arm that is easy to install in the embodiment of the present application is: using a hinged structure to change the traditional bolt connection method to improve the installation efficiency of the cross arm 1 on the pole body of the utility pole 4.

[0037] Before installation, the technicians rotate the two ends of the crossarm 1 around the hinged side until the arc groove in the middle of the crossarm 1 is open, and then clamp the crossarm 1 on the electric pole 4, so that the frames 11 at both ends of the crossarm 1 rotate around the hinged side to close the arc groove, and fix the crossarm 1 by inserting the bolts on the mounting plate, thereby completing the clamping of the crossarm 1 and the electric pole 4.

[0038] The technician turns the knob of the screw rod to make the two clamp rings 34 slide toward each other, and the inner walls of the multiple clamp rings 34 press against the surface of the pole body of the electric pole 4, and the cross arm 1 is fixed to the electric pole 4 by pressing friction.

[0039] On the other hand, the embodiment of the present application provides an auxiliary installation device for a cross arm that is easy to install, which is applied to the installation of the cross arm 1 on the electric pole 4. Figure 3 and Figure 4An auxiliary installation device for a cross arm that is easy to install includes an auxiliary frame 3 and a base plate 2. The base plate 2 is composed of two plate surface parts with the same area and symmetrical structure. One end of the two plate surface parts facing each other is hinged vertically, and the hinged end is a width end. The two plates with the same area and symmetrical structure rotate around the hinged side in the horizontal plane to form the base plate 2; the middle part of the two plate surfaces of the base plate 2 is provided with a semi-circular arc groove, which is hinged to the base plate 2 as the two plate surface parts rotate, and the two semi-circular arc grooves are connected to form a circular arc groove. The size of the circular arc groove is larger than the size of the electric pole 4, which is used for the clamping of the base plate 2 and the electric pole 4. The top walls of the two side panels constituting the base plate 2 are formed with vertically arranged arc plates 22 corresponding to the arc grooves. The horizontal cross-sections of the two arc plates 22 are fan-shaped, and the two arc plates 22 are distributed on a circular line; a cylinder wall 23 is vertically arranged on the inner walls of the two arc plates 22 facing each other, and a horizontally arranged screw is penetrated and threadedly connected in the middle part of the two arc plates 22. The screw is rotatably connected to the cylinder wall 23, and by screwing the screw, the two cylinder walls 23 are fed toward each other and pressed against the pole body of the electric pole 4; a mounting plate is formed on the facing ends of the two panel surfaces constituting the base plate 2 and a vertical side away from the hinged side, and bolt holes are opened in the middle part of the two mounting plates. The technicians insert the bolts into the bolt holes and install the bolts to stabilize the two components of the base plate 2.

[0040] Reference Figure 4 , the two opposite ends of the plate surface constituting the base plate 2 are fixedly connected with horizontally arranged reels 21, and a winding rope 24 is wound on the reel 21. This embodiment does not restrict the material of the winding rope 24, as long as it can withstand a large load. In practical applications, it is recommended to select a steel cable with a diameter between 2cm and 3.5cm. The line between the two reels 21 is parallel to the length direction of the base plate 2. Furthermore, this embodiment preferably sets a motor (not shown in the figure) corresponding to the axis of the reel 21, and the motor corresponds to the reel 21 axle one by one, and applies active rotational force to the reel 21 axle to tighten the rope.

[0041] Reference Figure 3 and Figure 5 The auxiliary frame 3 is in the shape of a flat rectangular frame with a length greater than width, and a width greater than height. Similar to the base plate 2 and the cross arm 1, the auxiliary frame 3 is also formed by combining two hinged parts. The edges of one side of the two end structures of the auxiliary frame 3 facing each other are hinged, and the hinge axis is vertically arranged. The top and bottom sides of the other side of the facing ends are formed with mounting plates. Bolt holes are horizontally penetrated in the middle part of the mounting plate, and bolts are inserted and the mounting nuts are tightened to complete the connection of the auxiliary frame 3. Semi-arc grooves are opened in the middle part of the facing ends of the two end structures constituting the center frame. With the connection of the above-mentioned mounting plates, the two semi-arc grooves are connected into an arc groove. The size of the arc groove is larger than the size of the electric pole 4. When the above-mentioned auxiliary frame 3 opens the arc groove from the hinged state, the technicians install the auxiliary frame 3 on the electric pole 4 to assemble the auxiliary frame 3.

[0042] Reference Figure 5 , a plurality of arc plates 22 are circumferentially distributed in the part corresponding to the arc groove inside the auxiliary frame 3, the plate surface of the arc plate 22 is vertically arranged, and the bottom end is formed on the bottom side of the auxiliary frame 3, the plate surface of the arc plate 22 is an arc surface, and the plurality of arc plates 22 are circumferentially distributed at equal angles on a circumference line with the center of the arc groove as the center. A clamping ring 34 is distributed on the opposite sides of each arc plate 22, and the size of the clamping ring 34 is smaller than the plate surface size of the arc plate 22. An electric cylinder 35 is horizontally arranged on the opposite sides of each arc plate 22, and the plurality of electric cylinders 35 are arranged radially along the arc plate 22, the cylinder body of the electric cylinder 35 is fixedly connected to the arc plate 22, and the piston rod of the electric cylinder 35 horizontally penetrates the arc plate 22 and is fixedly connected to a side wall of the clamping ring 34 close to the arc plate 22; thus, the radial sliding of the clamping ring 34 is realized by extending and retracting the piston rod of the electric cylinder 35. The opposite side of the clamp ring 34 is rotatably connected with a roller 33 , and the wheel surface of the roller 33 is vertical. With the vertical movement of the clamp ring 34 , the wheel surface of the roller 33 abuts against the electric pole 4 .

[0043] Reference Figure 5 The two opposite length sides of the top side wall of the auxiliary frame 3 are formed with vertically arranged plug pins 32, and the plug pins 32 are distributed corresponding to the plug holes 16 of the above-mentioned cross arm 1 and are used to plug into the plug holes 16. The plug pins 32 are plugged into the plug holes 16 to complete the installation of the cross arm 1 on the auxiliary frame 3.

[0044] Reference Figure 5 Rope hooks 31 are fixedly connected at both ends of the bottom side of the auxiliary frame 3. The two rope hooks 31 and the two reels 21 at both ends of the base plate 2 are located in a vertical plane. The rope hooks 31 correspond to the reels 21 one by one. One end of the rope on the reel 21 is wound around the reel 21, and the other end is fixed to the rope hook 31.

[0045] Reference Figure 5 The length of the auxiliary frame 3 is equal to that of the base plate 2, so that the rope 24 between the rope hook 31 and the reel 21 is in a vertical state. The width of the auxiliary frame 3 is equal to that of the cross arm 1, so that the plug holes 16 on the cross arm 1 correspond to the plug pins 32 on the auxiliary frame 3.

[0046] It should be noted that the diameters of the arc grooves of the base plate 2 , the auxiliary frame 3 , and the cross arm 1 in the embodiment of the present application should be designed according to the diameter of the largest pole body of the electric pole 4 for power transmission among the standard sizes of electric poles 4 .

[0047] The implementation principle of the auxiliary installation device for the cross arm that is easy to install in the embodiment of the present application is as follows: the technician first surrounds the base plate 2 around the hinged part to open the arc groove, and clamps the electric pole 4 in the arc groove, the cylinder wall 23 is in the initial position, and the base plate 2 is in a state of free sliding along the electric pole 4. The technician places the base plate 2 horizontally according to the horizontal angle of the cross arm 1, so that the length direction of the base plate 2 is parallel to the pre-installed length direction of the cross arm 1.

[0048] After determining the orientation of the cross arm 1 , the technician tightens the knob to drive the cylinder wall 23 to slide radially and tightly fix the electric pole 4 .

[0049] The technicians install the auxiliary frame 3 and the cross arm 1 on the electric pole 4 in sequence, align and plug the plug pins 32 on the auxiliary frame 3 with the plug holes 16 on the cross arm 1 , and complete the fixation of the cross arm 1 on the auxiliary frame 3 .

[0050] The technicians control multiple electric cylinders 35 to extend the piston rods synchronously, so that the wheel surface of the roller 33 is pressed against the pole body of the electric pole 4. The electric cylinder 35 keeps the piston rod extension length unchanged and is in a self-locking state, so that the wheel surface of the roller 33 continues to press against the electric pole 4. The roller 33 is pressed tightly, and the friction force causes the roller 33 to rotate, and the reverse rotation can drive the auxiliary frame 3 to rise and fall. The rotation of the roller 33 can be achieved by a micro motor, which can be driven by a motor set corresponding to the wheel shaft of the roller 33. The technology is relatively existing, and the principle of this implementation will not be repeated.

[0051] After the auxiliary frame 3 rises to the preset height, the electric cylinder 35 needs to keep the piston rod extended to keep the wheel surface of the roller 33 pressed tightly to ensure friction and prevent the roller 33 from slipping under the action of gravity and causing the auxiliary frame 3 to slide down.

[0052] During the lifting process of the auxiliary frame 3, the motor can drive the reel 21 to rotate in the opposite direction to keep the rope roll in a straightened state. The setting of the motor can also be used to measure the elongation length of the rope roll, that is, the rising distance of the rope hook 31, and then measure the current height of the auxiliary frame 3.

[0053] Mainly, the straightened rope is wound around the auxiliary frame 3 and the two ends of the base plate 2 to limit the rotation deviation of the auxiliary frame 3 through the tensioning force, and the wheel surface rotation restriction of the roller 33 on the auxiliary frame 3 makes the auxiliary frame 3 only able to rise and fall vertically and cannot rotate in the horizontal plane.

[0054] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A cross arm that is easy to install, characterized in that: It comprises two frames (11) with the same structure and hingedly connected at one side edge of the end, and a connecting component is provided at the hinged end of the two frames (11) to connect the two frames (11); A plurality of clamping rings (12) are arranged facing each other inside the two frames (11); A clamping rod (13) is arranged inside the frame (11), and a plurality of clamping rings (12) are slidably connected to the clamping rod (13); a sliding member for the sliding of the clamping rings (12) is arranged inside the clamping rod (13); The bottom sides of the two frames (11) are provided with plug-in holes (16) along the length direction of the frames (11).

2. A cross arm that is easy to install according to claim 1, characterized in that: The sliding member comprises: A screw rod is rotatably connected to the inner walls of both ends of the clamp rod (13) in parallel with the length direction of the clamp rod (13); the screw rod is threadedly connected and penetrated by a screw rod slider (14); the screw rod extends out of the end of the clamp rod (13); the top and bottom sides of the screw rod slider (14) extend out of the surface of the clamp rod (13) and are connected to the clamp ring (12); The top and bottom side walls of the clamping rod (13) are both provided with sliding grooves (15) adapted to fit the screw rod slider (14).

3. An auxiliary installation device for a cross arm that is easy to install as claimed in claim 2, characterized in that: include: The auxiliary frame (3) has a width dimension equal to that of the frame body (11); a plug pin (32) adapted to the plug hole (16) on the frame body (11) is provided at the top of the auxiliary frame (3); the plug pin (32) is plugged into the plug hole (16) to fix the frame body (11); A clamp ring (34) is arranged inside the auxiliary frame (3), and a sliding member is arranged on the inner wall of the clamp ring (34); Rope hooks (31) are symmetrically arranged at two ends of the auxiliary frame (3), the two rope hooks (31) are vertically arranged, and a winding rope (24) is arranged on the rope hooks (31); A base plate (2) is horizontally arranged directly below the auxiliary frame (3) and is fixed in position; The reels (21) are symmetrically arranged at two ends of the base plate (2); the two reels (21) and the two rope hooks (31) are arranged in the one vertical plane; the reels (21) and the rope hooks (31) are connected by the reel (24); and the two reels (21) are arranged directly below the two rope hooks (31).

4. The auxiliary installation device for a cross arm that is easy to install according to claim 3, characterized in that: The auxiliary frame (3) is composed of a frame body (11) hinged at both ends; accordingly, the clamping ring (34) is composed of multiple parts with the same structure, and the structures of the multiple clamping rings (34) are symmetrically arranged at the two parts of the auxiliary frame (3).

5. The auxiliary installation device for a cross arm that is easy to install according to claim 3, characterized in that: The sliding member comprises a plurality of vertically arranged rollers (33), the rollers (33) being rotatably connected to the inner wall of the clamp ring (34) and being horizontally and equiangularly distributed along the circumference of the clamp ring (34), and the wheel surfaces of the rollers (33) abutting against the surface of the electric pole (4).

6. The auxiliary installation device for a cross arm that is easy to install according to claim 5, characterized in that: The clamping ring (34) is provided with driving members on opposite sides corresponding to the plurality of rollers (33) to drive the rollers (33) to slide radially.

7. The auxiliary installation device for a cross arm that is easy to install according to claim 3, characterized in that: The base plate (2) is composed of two plate-like structures of the same area which are hinged together.

8. The auxiliary installation device for a cross arm that is easy to install according to claim 7, characterized in that: The central part of the base plate (2) is vertically formed with a plurality of cylindrical walls (23), the plurality of cylindrical walls (23) are symmetrically distributed on the two hinged components of the base plate (2), and the plurality of cylindrical walls (23) are connected to the base plate (2) by sliding toward each other.

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