Secondary processing device for avoiding skew of ceramic cross arm and processing technology thereof

Abstract

The application discloses a ceramic cross arm secondary processing device capable of avoiding skew and a processing technology thereof and belongs to the technical field of ceramic cross arm processing. The ceramic cross arm secondary processing device capable of avoiding skew and the processing technology thereof comprise a support rack and a hole expanding processing table, further comprise a cross arm retaining frame arranged on one side of the hole expanding processing table, and horizontal rails are arranged on the two sides of the top of the support rack. In order to solve the problem that the contact area between the cross arm and the clamping equipment is relatively small due to the influence of the design of the surface of the cross arm, dislocation and deviation are prone to occur in the process of processing the cross arm, the expanded rubber shaft wheel can be attached to the surface on the inner side of the groove of the ceramic cross arm, the contact area and the frictional resistance between the rubber shaft wheel and the ceramic cross arm are increased at this time, the expanded triangular shaft plate can play a role in transversely supporting the whole ceramic cross arm structure by means of the rubber shaft wheel, the ceramic cross arm can be effectively clamped and fixed as a whole, and deviation and slippage are avoided in the drilling process.

Description

Technical Field

[0001] This invention relates to the field of ceramic crossbeam processing technology, specifically to a secondary processing device for ceramic crossbeams to prevent skewing and its processing technology. Background Technology

[0002] Crossarms are an important component of towers. Their function is to install insulators and fittings to support conductors and lightning protection wires and maintain a certain safe distance as required. Crossarms have a wide range of applications and their demand is increasing. According to field investigations, there are two solutions to the problem of ceramic crossarms being skewed due to the inability to install shear bolts: one is to replace the crossarm; the other is to perform secondary processing on the iron crossarm on site.

[0003] Chinese Patent Publication No. CN213317849U discloses a power crossarm processing device. This device, through the cooperation of a guide rod, a stop block, a moving block, a guide hole, an L-shaped groove, a first threaded hole, a second threaded hole, a first screw, a second screw, and a knob, can fix the moving block to the right end of the crossarm. When the crossarm moves to the right on the fixed bar, it can drive the moving block to move together. When the right side of the moving block overlaps with the left side of the stop block, the position of the hole to be drilled on the crossarm can be determined, thus facilitating the quick determination of the drilling position on the crossarm.

[0004] In the aforementioned patent, due to the design of the crossarm surface, the contact area between the crossarm and the clamping device is relatively small, which makes it easy for misalignment and displacement to occur during the processing of the crossarm; therefore, it does not meet the existing requirements. In response, a secondary processing device and processing technology for ceramic crossarms to avoid skewness have been proposed. Summary of the Invention

[0005] The purpose of this invention is to provide a secondary processing device and process for preventing skewing of ceramic crossarms. After expansion, the rubber axle will fit against the inner surface of the groove of the ceramic crossarm. At this time, the contact area and frictional resistance between the rubber axle and the ceramic crossarm will increase. In this way, the expanded triangular axle plate can play a lateral support role for the entire ceramic crossarm structure with the help of the rubber axle, which can effectively clamp the entire ceramic crossarm and prevent deviation and slippage during drilling, thus solving the problems in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a secondary processing device for ceramic crossarms to avoid skewing, comprising a support frame and a reaming processing table, and a crossarm retaining frame disposed on one side of the reaming processing table. Horizontal rails are provided on both sides of the top of the support frame, and the crossarm retaining frame is slidably connected to the support frame via the horizontal rails. A frame bottom compartment is provided inside the support frame, and a clamping motor is provided inside the frame bottom compartment. A synchronous track is provided at one end of the clamping motor, extending through track perforations to the top of the support frame. Telescopic support rods are provided on both the upper and lower sides of one end of the clamping motor, and the clamping motor is connected to the support frame via the telescopic support rods. The reaming processing table includes a reaming motor and a gantry shaft frame, and the reaming motor and the gantry shaft frame are connected by bolts.

[0007] Preferably, one end of the reaming motor is provided with a locking bearing, which extends to the inner side of the gantry frame. A reaming drill bit is provided inside the locking bearing. The reaming drill bit is rotatably connected to the reaming motor through the locking bearing, and one end of the reaming drill bit is connected to the reaming motor through a slot.

[0008] Preferably, a spring connecting rod is provided between the gantry shaft frames, and the spring connecting rod is telescopically connected to the gantry shaft frames. A rubber corner shaft is provided on the inner side of the gantry shaft frame, and the rubber corner shaft is connected to the gantry shaft frame through a spring storage groove.

[0009] Preferably, there are four crossarm retaining frames, and two sets of hydraulic struts are arranged between the crossarm retaining frames. One end of each crossarm retaining frame is provided with a keyed shaft, which extends through to the other end of the crossarm retaining frame. One end of the keyed shaft is provided with an integrally formed transmission pulley, and the keyed shaft is connected to the synchronous track through the transmission pulley. The outer surface of the keyed shaft is provided with multiple toothed collars, which are rotatably connected to the crossarm retaining frames through the keyed shaft.

[0010] Preferably, the inner side of the crossbeam fixing frame is provided with multiple inclined grooves, and the interior of the inclined grooves is provided with a transverse expansion support frame. The transverse expansion support frame includes a limiting support plate, which is connected to the inclined groove by a snap fastener. A triangular shaft plate is provided between the limiting support plates. There are two triangular shaft plates, and the triangular shaft plates are slidably connected to the limiting support plates.

[0011] Preferably, one end of the triangular shaft plate is provided with a rubber axle wheel, which is rotatably connected to the triangular shaft plate. The other end of the triangular shaft plate is provided with an integrally formed bevel tenon. A top cone is provided between the bevel tenons, which is fitted and connected to the bevel tenon and extends into the interior of the beveled groove.

[0012] Preferably, the inner side of the top cone is provided with an integrally formed toothed plate, which extends to the bottom of the toothed collar. The toothed plate is engaged with the toothed collar and slidably connected to the crossbeam retainer.

[0013] A processing technology for a secondary processing device for ceramic crossarms that avoids skewness includes the following steps:

[0014] Step 1: Insert the ceramic crossarm from the reaming table between the two sets of vertically arranged crossarm retaining frames, with the end with the mounting hole located at the reaming table. Then, move the two sets of crossarm retaining frames inward using the track. During the movement, adjust the position of the ceramic crossarm so that the groove on the crossarm corresponds to the horizontal reaming support frame.

[0015] Step 2: After initial clamping, rotate the ceramic crossarm to align the hole with the reaming drill bit. Then start the clamping motor, which drives the keyed shafts on the two sets of crossarm retaining frames to rotate in opposite directions via the synchronous crawler. The rotation of the keyed shafts will push the toothed plate and the top cone out toward the inclined groove. During the pushing process, the top cone will squeeze the triangular shaft plates on both sides.

[0016] Step 3: The extended triangular shaft plate drives the rubber axle wheel to fit against both sides of the groove on the surface of the crossarm. During the rotation, the crossarm fixing frame located above can be controlled to retract downward through the cooperation of the telescopic support rod and the hydraulic support rod, thus completing the clamping and fixing operation of the entire crossarm structure.

[0017] Step 4: Finally, turn on the reaming motor and use the reaming drill bit to ream the installation hole. During the process, the rubber angle shaft on the inside of the gantry frame can clamp the crossbeam, which facilitates the reaming operation.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. In this invention, the expanded rubber axle wheel will fit against the inner surface of the groove of the ceramic crossarm. At this time, the contact area and frictional resistance between the rubber axle wheel and the ceramic crossarm will increase. In this way, the expanded triangular shaft plate can use the rubber axle wheel to provide lateral support for the entire ceramic crossarm structure, which can effectively clamp the ceramic crossarm as a whole and prevent displacement and slippage during drilling. At the same time, the rubber axle wheel can also play a certain role in buffering and shock absorption, preventing the ceramic crossarm and triangular shaft plate from being worn due to vibration during drilling.

[0020] 2. In this invention, the reaming drill bit is designed with a two-section structure. The diameters of the two sections are different. The diameter of the front drill bit is smaller than that of the tail drill bit, and slightly larger than the current ceramic crossarm mounting hole diameter. During the reaming operation, the front drill bit first performs a small-scale reaming operation on the mounting hole, and then the tail drill bit performs a second reaming operation on this basis, so that the mounting hole diameter meets the requirements. This can avoid the ceramic crossarm from cracking due to the reaming progress being too fast. Attached Figure Description

[0021] Figure 1This is the overall front view of the present invention;

[0022] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the hole-reaming table structure of the present invention;

[0024] Figure 4 This is a schematic diagram of the crossarm retaining frame structure of the present invention;

[0025] Figure 5 This is a schematic diagram of the bonded shaft structure of the present invention;

[0026] Figure 6 This is a schematic diagram of the transverse expansion support structure of the present invention.

[0027] In the diagram: 1. Support frame; 2. Reaming table; 3. Crossbeam retainer; 101. Horizontal track; 102. Frame base; 103. Clamping motor; 104. Synchronous track; 1031. Telescopic support rod; 1041. Track perforation; 201. Reaming motor; 202. Gantry shaft frame; 2011. Locking bearing; 2012. Reaming drill bit; 2021. Spring connecting rod; 2 022, Spring storage groove; 2023, Rubber angle shaft; 301, Hydraulic strut; 302, Horizontal expansion support; 303, Keyed shaft; 304, Angled mounting groove; 3021, Limiting support plate; 3022, Triangular shaft plate; 3023, Rubber shaft wheel; 3024, Gear plate; 3025, Top cone; 3026, Angled tenon; 3031, Transmission pulley; 3032, Gear collar. Detailed Implementation

[0028] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0029] To address the issues of misalignment and offset that easily occur during the processing of crossarms using existing equipment, please refer to... Figure 1-2 This embodiment provides the following technical solution:

[0030] A secondary processing device for ceramic crossarms to prevent tilting includes a support frame 1 and a reaming table 2, and a crossarm retaining frame 3 disposed on one side of the reaming table 2. Horizontal rails 101 are provided on both sides of the top of the support frame 1. The crossarm retaining frame 3 is slidably connected to the support frame 1 via the horizontal rails 101, allowing for movement of the crossarm retaining frame 3 to facilitate adjustment according to the size of the ceramic crossarm. The support frame 1 has a base compartment 102 inside. The frame bottom compartment 102 is equipped with a clamping motor 103. One end of the clamping motor 103 is equipped with a synchronous track 104. The synchronous track 104 extends to the top of the support frame 1 through the track through hole 1041. Telescopic support rods 1031 are provided on both the upper and lower sides of one end of the clamping motor 103. The clamping motor 103 is connected to the support frame 1 through the telescopic support rods 1031. The hole reaming table 2 includes a hole reaming motor 201 and a gantry shaft frame 202. The hole reaming motor 201 and the gantry shaft frame 202 are connected by bolts.

[0031] The working principle of the above is as follows: The ceramic crossarm is inserted from the reaming table 2 into the space between two sets of vertically arranged crossarm retaining frames 3, with the end with the mounting hole located at the reaming table 2. Then, the two sets of crossarm retaining frames 3 are moved inward by the track. During the movement, the position of the ceramic crossarm is adjusted so that the groove on the crossarm corresponds to the horizontal reaming support frame 302. After the initial clamping is completed, the ceramic crossarm is rotated to align the hole with the reaming drill bit 2012. Finally, the reaming motor 201 is turned on, and the reaming drill bit 2012 is used to ream the mounting hole.

[0032] To address the problem of cracking in ceramic crossarms caused by excessively rapid hole expansion in existing technologies, please refer to [link to relevant documentation]. Figure 2-3 This embodiment provides the following technical solution:

[0033] A locking bearing 2011 is provided at one end of the reaming motor 201, extending to the inner side of the gantry shaft bracket 202. A reaming drill bit 2012 is housed inside the locking bearing 2011. The reaming drill bit 2012 is rotatably connected to the reaming motor 201 via the locking bearing 2011. One end of the reaming drill bit 2012 is connected to the reaming motor 201 via a slot. The reaming drill bit 2012 is designed as a two-section structure with different diameters between the two sections. The diameter of the front section is smaller than that of the rear section, and slightly larger than the diameter of the current ceramic crossarm mounting hole. During the enlargement operation, the front drill bit first enlarges the mounting hole within a small range, and then the tail drill bit enlarges the hole a second time on the basis, so that the mounting hole diameter meets the requirements. This can avoid the ceramic crossarm from cracking due to excessively fast enlargement. A spring connecting rod 2021 is provided between the gantry shaft brackets 202. The spring connecting rod 2021 is telescopically connected to the gantry shaft brackets 202. A rubber angle shaft 2023 is provided on the inner side of the gantry shaft brackets 202. The rubber angle shaft 2023 is connected to the gantry shaft brackets 202 through the spring storage groove 2022.

[0034] To address the issue that existing technologies often employ a corrugated surface structure for ceramic crossarms, resulting in insufficient contact area between the crossarm and the clamping device and thus failing to provide effective reinforcement, please refer to... Figure 4-6 This embodiment provides the following technical solution:

[0035] There are four crossarm retaining frames 3. Two sets of hydraulic struts 301 are arranged between the crossarm retaining frames 3. The hydraulic struts 301 are used to connect the upper and lower crossarm retaining frames 3 on the same side. One end of the crossarm retaining frame 3 is provided with a keyed shaft 303, which extends through to the other end of the crossarm retaining frame 3. One end of the keyed shaft 303 is provided with an integrally formed transmission pulley 3031. The keyed shaft 303 is connected to the synchronous track 104 through the transmission pulley 3031. The outer surface of the keyed shaft 303 is provided with multiple toothed collars 3032. The toothed collars 3032 are rotatably connected to the crossarm retaining frame 3 through the keyed shaft 303. The inner side of the crossarm retaining frame 3 is provided with multiple inclined grooves 304. The interior of the mounting groove 304 is equipped with a transverse expansion support frame 302, which includes a limiting support plate 3021. The limiting support plate 3021 is connected to the inclined mounting groove 304 by a snap-fit. Two triangular shaft plates 3022 are provided between the limiting support plates 3021. The triangular shaft plates 3022 are slidably connected to the limiting support plates 3021. A spring tension structure is provided between the triangular shaft plates 3022 and the limiting support plates 3021. When the triangular shaft plates 3022 expand to both sides, the springs are stretched. When the triangular shaft plates 3022 lose the expansion pressure, the springs help the triangular shaft plates 3022 return to their original position. A rubber wheel 3023 is provided at one end of the triangular shaft plate 3022. The rubber axle wheel 3023 is rotatably connected to the triangular shaft plate 3022. After expansion, the rubber axle wheel 3023 will fit against the surface of the groove of the ceramic crossarm. At this time, the frictional resistance between the rubber axle wheel 3023 and the ceramic crossarm increases. At the same time, the expanded triangular shaft plate 3022 can provide lateral support for the entire ceramic crossarm structure with the help of the rubber axle wheel 3023, solving the problem that the contact area between the traditional reinforcement device and the ceramic crossarm is too small to provide an effective reinforcement effect. At the same time, the rubber axle wheel 3023 can also play a certain role in buffering and shock absorption, avoiding wear on the ceramic crossarm and the triangular shaft plate 3022 due to vibration during drilling. The other end of the triangular shaft plate 3022 is provided with an integrally formed bevel tenon. A top cone 3025 is provided between the head 3026 and the beveled tenon 3026. The top cone 3025 is fitted and connected to the beveled tenon 3026. The top cone 3025 extends into the interior of the beveled groove 304. An integrally formed toothed plate 3024 is provided on the inner side of the top cone 3025. The toothed plate 3024 extends to the bottom of the toothed collar 3032. The toothed plate 3024 is engaged and connected to the toothed collar 3032. The toothed plate 3024 is slidably connected to the crossbeam retainer 3. The rotation of the toothed collar 3032 can control the toothed plate 3024 to slide back and forth, thus controlling the movement of the top cone 3025. The top cone 3025, in conjunction with the beveled tenon 3026, pushes the triangular shaft plate 3022 to both sides to expand.

[0036] The working principle of the above is as follows: The synchronous track 104 drives the keyed shafts 303 on the two sets of crossarm retaining frames 3 to rotate in opposite directions. The rotation of the keyed shafts 303 will push the toothed plate 3024 and the top cone 3025 outward towards the inclined groove 304. During the pushing process, the top cone 3025 will squeeze the triangular shaft plates 3022 on both sides. The expanded triangular shaft plates 3022 drive the rubber axle wheel 3023 to fit against the two sides of the groove on the surface of the crossarm. During the rotation, through the cooperation of the telescopic support rod 1031 and the hydraulic support rod 301, the crossarm retaining frame 3 located above can be controlled to retract downward, completing the clamping and fixing operation of the entire crossarm structure.

[0037] Please see Figure 1-6 A processing technology for a secondary processing device for ceramic crossarms to avoid skewing includes the following steps:

[0038] Step 1: Insert the ceramic crossarm from the reaming table 2 into the space between the two sets of vertically arranged crossarm retaining frames 3, with the end with the mounting hole located at the reaming table 2. Then, move the two sets of crossarm retaining frames 3 inward via the track. During the movement, adjust the position of the ceramic crossarm so that the groove on the crossarm corresponds to the horizontal expansion support frame 302.

[0039] Step 2: After initial clamping, rotate the ceramic crossarm to align the hole with the reaming drill bit 2012. Then start the clamping motor 103, which drives the keyed shafts 303 on the two sets of crossarm retaining frames 3 to rotate in opposite directions via the synchronous crawler 104. The rotation of the keyed shafts 303 will push the toothed plate 3024 and the top cone 3025 out toward the inclined groove 304. During the pushing process, the top cone 3025 will squeeze the triangular shaft plates 3022 on both sides.

[0040] Step 3: The extended triangular shaft plate 3022 drives the rubber shaft wheel 3023 to fit against both sides of the groove on the surface of the crossarm. During the rotation, through the cooperation of the telescopic support rod 1031 and the hydraulic support rod 301, the crossarm fixing frame 3 located above can be controlled to retract downwards, thus completing the clamping and fixing operation of the entire crossarm structure.

[0041] Step 4: Finally, turn on the reaming motor 201 and use the reaming drill bit 2012 to ream the installation hole. During the process, the rubber angle shaft 2023 on the inner side of the gantry shaft bracket 202 can clamp the crossbeam, which facilitates the reaming operation.

[0042] Working principle: The ceramic crossarm is inserted from the reaming table 2 between two sets of vertically arranged crossarm retaining frames 3, with the end with the mounting hole located at the reaming table 2. Then, the two sets of crossarm retaining frames 3 are moved inward via a track. During the movement, the position of the ceramic crossarm is adjusted so that the groove on the crossarm corresponds to the horizontal reaming support frame 302. After initial clamping, the ceramic crossarm is rotated to align the hole with the reaming drill bit 2012. The synchronous crawler 104 drives the keyed shafts 303 on the two sets of crossarm retaining frames 3 to rotate in opposite directions. The rotation of the keyed shafts 303 will cause the toothed plate 30... 24 and the top cone 3025 are pushed out towards the inclined groove 304. During the pushing out process, the top cone 3025 will squeeze the triangular shaft plates 3022 on both sides. The expanded triangular shaft plates 3022 drive the rubber shaft wheel 3023 to fit against both sides of the groove on the surface of the crossarm. During the rotation, through the cooperation of the telescopic support rod 1031 and the hydraulic support rod 301, the crossarm fixing frame 3 located above can be controlled to retract downwards to complete the clamping and fixing operation of the entire crossarm structure. Finally, the hole reaming motor 201 is turned on, and the hole reaming drill bit 2012 is used to ream the installation hole.

[0043] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0044] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A secondary processing device for ceramic crossbeams to prevent skewing, comprising a support frame (1) and a reaming processing table (2), characterized in that: It also includes a crossbeam retainer (3), which is set on one side of the reaming table (2). Horizontal rails (101) are provided on both sides of the top of the support frame (1). The crossbeam retainer (3) is slidably connected to the support frame (1) through the horizontal rails (101). The support frame (1) is provided with a frame bottom compartment (102) inside. A clamping motor (103) is provided inside the frame bottom compartment (102). A synchronous track (10) is provided at one end of the clamping motor (103). 4) The synchronous track (104) extends to the top of the support frame (1) through the track perforation (1041). The clamping motor (103) is provided with telescopic support rods (1031) on both the upper and lower sides of one end. The clamping motor (103) is connected to the support frame (1) through the telescopic support rods (1031). The hole-expanding processing table (2) includes a hole-expanding motor (201) and a gantry shaft frame (202). The hole-expanding motor (201) and the gantry shaft frame (202) are connected by bolts. There are four crossarm retaining frames (3), and two sets of hydraulic struts (301) are arranged between the crossarm retaining frames (3). The hydraulic struts (301) are used to connect the upper and lower crossarm retaining frames (3) on the same side. One end of the crossarm retaining frame (3) is provided with a keyed shaft (303), which extends through to the other end of the crossarm retaining frame (3). One end of the keyed shaft (303) is provided with an integrally formed transmission pulley (3031), and the keyed shaft (303) is connected to the transmission pulley (3031). Connected to the synchronous track (104), the outer surface of the keyed shaft (303) is provided with multiple toothed collars (3032), which are rotatably connected to the crossarm retaining frame (3) through the keyed shaft (303); the inner side of the crossarm retaining frame (3) is provided with multiple inclined grooves (304), and the interior of the inclined grooves (304) is provided with a transverse expansion support frame (302), which includes a limiting support plate (3021), and the limiting support plate (3021) and the inclined grooves (3032) are connected to the crossarm retaining frame (304). 04) A triangular shaft plate (3022) is provided between the limiting support plate (3021) via a snap-fit ​​connection. There are two triangular shaft plates (3022), and the triangular shaft plates (3022) are slidably connected to the limiting support plate (3021). A rubber axle wheel (3023) is provided at one end of the triangular shaft plate (3022), and the rubber axle wheel (3023) is rotatably connected to the triangular shaft plate (3022). An integrally formed oblique tenon (3026) is provided at the other end of the triangular shaft plate (3022). A top cone (3025) is provided between the heads (3026), the top cone (3025) is fitted and connected to the bevel tenon (3026), and the top cone (3025) extends into the interior of the beveled groove (304); an integrally formed toothed plate (3024) is provided on the inner side of the top cone (3025), the toothed plate (3024) extends to the bottom of the toothed collar (3032), the toothed plate (3024) is engaged and connected to the toothed collar (3032), and the toothed plate (3024) is slidably connected to the crossbeam retainer (3).

2. The secondary processing device for avoiding skewing of the ceramic crossbeam according to claim 1, characterized in that: One end of the reaming motor (201) is provided with a locking bearing (2011), which extends to the inner side of the gantry frame (202). The locking bearing (2011) is provided with a reaming drill bit (2012), which is rotatably connected to the reaming motor (201) through the locking bearing (2011). One end of the reaming drill bit (2012) is connected to the reaming motor (201) through a slot.

3. The secondary processing device for avoiding skewing of the ceramic crossbeam according to claim 2, characterized in that: A spring connecting rod (2021) is provided between the gantry shaft brackets (202), and the spring connecting rod (2021) is telescopically connected to the gantry shaft brackets (202). A rubber angle shaft (2023) is provided on the inner side of the gantry shaft brackets (202), and the rubber angle shaft (2023) is connected to the gantry shaft brackets (202) through a spring storage groove (2022).

4. A processing technology for a secondary processing device for a ceramic crossarm that avoids skewness, implemented based on the secondary processing device for a ceramic crossarm that avoids skewness as described in claim 3, wherein, Includes the following steps: Step 1: Insert the ceramic crossarm from the reaming table (2) into the space between the two sets of vertically arranged crossarm retaining frames (3), with the end with the mounting hole located at the reaming table (2). Then, move the two sets of crossarm retaining frames (3) inward through the track. During the movement, adjust the position of the ceramic crossarm so that the groove on the crossarm corresponds to the horizontal expansion support frame (302). Step 2: After completing the initial clamping, rotate the ceramic crossarm and align the hole position with the reaming drill bit (2012). Then start the clamping motor (103), and drive the keyed shafts (303) on the two sets of crossarm fixing frames (3) to rotate in opposite directions through the synchronous crawler (104). The rotation of the keyed shafts (303) will push the toothed plate (3024) and the top cone (3025) out toward the inclined groove (304). During the pushing process, the top cone (3025) will squeeze the triangular shaft plates (3022) on both sides. Step 3: The extended triangular shaft plate (3022) drives the rubber shaft wheel (3023) to fit against both sides of the groove on the surface of the crossarm. During the rotation, through the cooperation of the telescopic support rod (1031) and the hydraulic support rod (301), the crossarm fixing frame (3) located above can be controlled to retract downwards, thus completing the clamping and fixing operation of the entire crossarm structure. Step 4: Finally, turn on the reaming motor (201) and use the reaming drill bit (2012) to ream the installation hole. During the process, the rubber angle shaft (2023) on the inner side of the gantry frame (202) can clamp the crossbeam, which facilitates the reaming operation.

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