Cement pole reinforcement cage positioning and welding tool

Abstract

The present application relates to a kind of cement pole reinforcement cage positioning welding tool, including welding structure, end positioning structure, electric control cabinet, electric welding machine and electric control cabinet are arranged side by side in one side of welding base frame, cable pipeline groove is arranged in one side of welding base frame, welding structure is connected in one side of welding base frame, and welding structure is connected electric control cabinet and electric welding machine by cable pipeline groove, welding structure can be transversely slid on the side of welding base frame, end positioning structure is oppositely connected on welding base frame, support structure is arranged between two side end positioning structures, and support structure is connected on welding base frame, end positioning structure, support structure can be transversely slid on welding base frame.The present application optimizes the setting of cement inductance reinforcement cage positioning welding tool, improves a kind of tool structure with straightening, positioning steel bar, while can be realized on tool quick welding structure, reduces the time and operation difficulty of reinforcement cage positioning welding, and simple structure, it is convenient to steel bar preset laying, it is suitable for use.

Description

Technical Field

[0001] This invention relates to the field of precast concrete components, and more particularly to a positioning and welding fixture for the reinforcing cage of a cement pole. Background Technology

[0002] Traditional positioning and welding of reinforced concrete pole cages relies heavily on manual adjustment of the reinforcing bars, which is inefficient and lacks precision, leading to uneven spacing and misalignment of the bars, resulting in inconsistent cage quality. Some existing fixtures lack effective rebar straightening capabilities, requiring additional straightening before welding, increasing production time and costs. Furthermore, existing welding fixtures are often single-function, unable to simultaneously position, support, straighten, and automate welding of the rebars, and their component adjustments are inflexible, failing to meet the production needs of different specifications of reinforced concrete pole cages. Moreover, existing fixtures often employ simple fixing methods, lacking precise markings and reliable interlocking mechanisms, making them prone to positional shifts during welding, affecting weld quality and the overall strength of the cage. These problems severely restrict the production efficiency and product quality of reinforced concrete pole cages. Therefore, a new positioning and welding fixture for reinforced concrete pole cages is designed. Summary of the Invention

[0003] The purpose of this invention is to provide a positioning and welding fixture for the reinforcing cage of a cement pole to solve the above-mentioned technical problems. To achieve the above objective, the invention adopts the following technical solution:

[0004] A welding fixture for positioning and welding steel cages of cement poles includes a welding base frame, a welding structure, an end positioning structure, a support structure, a cable conduit trough, an electrical control cabinet, and a welding machine. The welding machine and the electrical control cabinet are arranged side by side on one side of the welding base frame, and the cable conduit trough is arranged parallel to one side of the welding base frame. The welding structure is connected to one side of the welding base frame and connects the electrical control cabinet and the welding machine through the cable conduit trough. The welding structure can slide laterally on the side of the welding base frame. The end positioning structures are arranged opposite each other and are connected to the welding base frame. The support structures are arranged between the two end positioning structures and are connected to the welding base frame. The end positioning structures and the support structures can slide laterally on the welding base frame.

[0005] Based on the above technical solution, the welding base frame consists of a base frame, a side sliding track, a front sliding track, and a graduated positioning groove. The front sliding track is located on the square part of the base frame, and the side sliding track is located on the upper side of the base frame. The side sliding track and the front sliding track are arranged side by side and parallel to each other. The center bottom side of the front sliding track is provided with a graduated positioning groove. The welding structure is connected inside the side sliding track and can slide laterally inside the side sliding track. The end positioning structure and the support structure are connected inside the front sliding track and can slide laterally inside the front sliding track. The bottom side of the end positioning structure and the support structure can be fitted and fixed onto the graduated positioning groove.

[0006] Based on the above technical solution, the end positioning structure consists of an end loading plate, end mounting rollers, an adjustable mounting lifting column, a loading plate positioning tip bolt, and a loading plate side moving pulley. The loading plate side moving pulleys are connected to the two ends of the end loading plate in opposite arrangements. The adjustable mounting lifting column is fixed at the center position of the end loading plate. Positioning screw holes are opened on the end loading plate on both sides of the adjustable mounting lifting column. The loading plate positioning tip bolt is threaded through the positioning screw holes. The end mounting roller is connected to one side of the top of the adjustable mounting lifting column.

[0007] Based on the above technical solution, the supporting structure consists of an end loading plate, an adjustable installation lifting column, a loading plate positioning tip bolt, a loading plate side moving pulley, and a supporting plate. The loading plate side moving pulleys are connected to the two ends of the end loading plate in opposite arrangements. The adjustable installation lifting column is fixed at the center of the end loading plate. Positioning screw holes are opened on the end loading plates on both sides of the adjustable installation lifting column. The loading plate positioning tip bolt is threaded through the positioning screw holes. The supporting plate is fixed to the top of the adjustable installation lifting column. The end loading plate in the end positioning structure and the supporting structure is set on the straight slide rail, and the loading plate side moving pulley is engaged in the side grooves of the straight slide rail. The bottom end of the loading plate positioning tip bolt passes through the positioning screw hole and is engaged and fixed with the graduated positioning tooth groove.

[0008] Based on the above technical solution, the welding structure comprises a welding torch head, a welding torch fixing platform, a lifting motor assembly, lifting gears, lifting rails, lifting teeth within the rails, a translation platform, platform pulleys, and a translation drive motor assembly. The welding torch head is fixed to the welding torch fixing platform. The lifting rails are fixed oppositely to the translation platform. The platform pulleys are oppositely connected to the two corners of the translation platform. Lifting teeth are provided on the opposite inner sides of the lifting rails. The translation drive motor assembly is fixed to one side of the translation platform, and the translation drive motor assembly is poweredly connected to the platform pulley on one side. Next, the lifting motor assembly is fixed on one side of the welding torch fixing platform, and the lifting gears are arranged oppositely on both sides of the welding torch fixing platform. The lifting motor assembly is poweredly connected to the lifting gear on one side. The welding torch fixing platform is embedded between the lifting rails, and the lifting gears are meshed with the lifting teeth inside the lifting rails. The lifting motor assembly and the translation drive motor assembly are electrically connected to the electrical control cabinet through cable conduit. The welding torch head is integrally connected to the welding machine through cable conduit. The translation platform is embedded in the side sliding rail, and the platform pulleys are embedded in the side grooves of the side sliding rail.

[0009] Based on the above technical solution, the end-mounting rollers in the end-positioning structures on both sides are set to different sizes. Each end-mounting roller consists of a round roller, a roller shaft, and a roller bearing. The roller shaft is connected to the center of the round roller via the roller bearing. Several sets of L-shaped end-mounting grooves are formed on the outer surface of the round roller, with these grooves arranged at equal circumferential angles. The shorter groove surface of each L-shaped end-mounting groove is located on the outer surface of the round roller. The adjustable lifting column consists of an upper fixed head, a lifting gear column, a lower fixed cylinder, a hand crank, a lifting gearbox, and a locking ratchet. The handle, lifting gearbox, and locking ratchet are coaxially arranged. The locking ratchet and the hand crank are opposite each other on both sides of the lifting gearbox. The lifting gearbox is fixed to one side of the top of the lower fixed cylinder. The upper fixed head is located at the top of the lifting gear column and is integrally formed with the lifting gear column. The lifting gear column is inserted vertically into the lower fixed cylinder, and the side of the lifting gearbox is meshed with the side of the lifting gear column. The roller shaft of the end mounting roller is fixed to the upper fixed head. The support plate of the support structure is fixed to the upper fixed head. The lower fixed cylinder is correspondingly fixed to the center of the end loading plate.

[0010] Compared with the prior art, the present invention has the following advantages: The present invention optimizes the setting of the cement inductive rebar cage positioning welding fixture, and improves it into a fixture structure that can straighten and position the rebar, and can realize rapid welding on the fixture. This reduces the time and difficulty of positioning welding of the rebar cage, and the structure is simple, convenient for pre-laying of rebar, and is suitable for widespread use. Attached Figure Description

[0011] Figure 1 This is a diagram showing the overall appearance of the present invention.

[0012] Figure 2 This is a schematic diagram showing the structural breakdown of the present invention.

[0013] Figure 3 This is a schematic diagram of the welding base frame of the present invention.

[0014] Figure 4 This is a schematic diagram of the end positioning structure of the present invention.

[0015] Figure 5 This is a schematic diagram of the support structure of the present invention.

[0016] Figure 6 This is a schematic diagram showing the disassembled welding structure of the present invention.

[0017] Figure 7 This is a schematic diagram of the end-mounted rollers and adjustable lifting column of the present invention.

[0018] In the diagram: 1. Welding base frame; 2. Welding structure; 3. End positioning structure; 4. Support structure; 5. Cable tray; 6. Electrical control cabinet; 7. Welding machine.

[0019] Base frame 1-1, side sliding rail 1-2, front sliding rail 1-3, graduated positioning groove 1-4

[0020] End loading plate 3-1, end mounting roller 3-2, adjustable mounting lifting column 3-3, loading plate positioning tip bolt 3-4, loading plate side moving pulley 3-5, support plate 3-6, positioning screw hole 3-7;

[0021] 2-1 Welding torch head, 2-2 Welding torch fixing platform, 2-3 Lifting motor assembly, 2-4 Lifting gear, 2-5 Lifting rail, 2-6 Lifting gear inside the rail, 2-7 Translation platform, 2-8 Platform pulley, 2-9 Translation drive motor assembly;

[0022] 32-1 round roller, 32-2 roller shaft, 32-3 roller bearing, 32-4 L-shaped end groove;

[0023] Upper fixing head 33-1, lifting gear column 33-2, lower fixing cylinder 33-3, hand crank handle 33-4, lifting gear box 33-5, locking ratchet 33-6. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0025] A welding fixture for positioning and welding steel cages of cement poles includes a welding base frame 1, a welding structure 2, an end positioning structure 3, a support structure 4, a cable conduit trough 5, an electrical control cabinet 6, and a welding machine 7. The welding machine 7 and the electrical control cabinet 6 are arranged side by side on one side of the welding base frame 1. The cable conduit trough 5 is arranged parallel to one side of the welding base frame 1. The welding structure 2 is connected to one side of the welding base frame 1 and is connected to the electrical control cabinet 6 and the welding machine 7 through the cable conduit trough 5. The welding structure 2 can slide laterally on the side of the welding base frame 1. The end positioning structures 3 are arranged opposite each other and are connected to the welding base frame 1. The support structures 4 are arranged between the two end positioning structures 3 and are connected to the welding base frame 1. The end positioning structures 3 and the support structures 4 can slide laterally on the welding base frame 1.

[0026] The welding base frame 1 consists of a base frame 1-1, a side sliding track 1-2, a front sliding track 1-3, and a graduated positioning groove 1-4. The front sliding track 1-3 is located on the square part of the base frame 1-1, and the side sliding track 1-2 is located on the upper side of the base frame 1-1. The side sliding track 1-2 and the front sliding track 1-3 are arranged side by side and parallel to each other. The center bottom side of the front sliding track 1-3 is provided with a graduated positioning groove 1-4. The welding structure 2 is connected inside the side sliding track 1-2 and can slide laterally inside the side sliding track 1-2. The end positioning structure 3 and the support structure 4 are connected inside the front sliding track 1-3 and can slide laterally inside the front sliding track 1-3. The bottom side of the end positioning structure 3 and the support structure 4 can be fitted and fixed onto the graduated positioning groove 1-4.

[0027] The end positioning structure 3 consists of an end loading plate 3-1, an end mounting roller 3-2, an adjustable mounting lifting column 3-3, a loading plate positioning tip bolt 3-4, and a loading plate side moving pulley 3-5. The loading plate side moving pulleys 3-5 are connected to the two ends of the end loading plate 3-1 in an opposing manner. The adjustable mounting lifting column 3-3 is fixed at the center position of the end loading plate 3-1. Positioning screw holes 3-7 are opened on the end loading plate 3-1 on both sides of the adjustable mounting lifting column 3-3. The loading plate positioning tip bolt 3-4 is threaded through and connected to the positioning screw hole 3-7. The end mounting roller 3-2 is connected to the top side of the adjustable mounting lifting column 3-3.

[0028] The supporting structure 4 consists of an end loading plate 3-1, an adjustable lifting column 3-3, a loading plate positioning tip bolt 3-4, side moving pulleys 3-5, and a support plate 3-6. The side moving pulleys 3-5 are arranged oppositely and connected to both ends of the end loading plate 3-1. The adjustable lifting column 3-3 is fixed at the center of the end loading plate 3-1. Positioning screw holes 3-7 are provided on the end loading plate 3-1 on both sides of the adjustable lifting column 3-3. The loading plate positioning tip bolt 3-4 is threaded through and connected to the positioning screw hole 3-7. The support plate 3-6 is fixed to the top of the adjustable installation lifting column 3-3. The end loading plate 3-1 in the end positioning structure 3 and the support structure 4 is set on the positive slide rail 1-3, and the side moving pulley 3-5 of the loading plate is embedded in the side grooves of the positive slide rail 1-3. The bottom end of the loading plate positioning tip bolt 3-4 passes through the positioning screw hole 3-7 and is engaged and fixed with the graduated positioning tooth groove 1-4.

[0029] The welding structure 2 comprises a welding torch head 2-1, a welding torch fixing platform 2-2, a lifting motor assembly 2-3, a lifting gear 2-4, a lifting rail 2-5, lifting teeth 2-6 within the rail, a translation platform 2-7, platform pulleys 2-8, and a translation drive motor assembly 2-9. The welding torch head 2-1 is fixed to the welding torch fixing platform 2-2. The lifting rail 2-5 is fixed oppositely to the translation platform 2-7. The platform pulleys 2-8 are oppositely connected to the two corners of the translation platform 2-7. The inner sides of the lifting rail 2-5 are provided with lifting teeth 2-6 within the rail. The translation drive motor assembly 2-9 is fixed to one side of the translation platform 2-7 and is poweredly connected to one side of the platform pulley 2-8. The lifting motor assembly 2-3 is fixed on one side of the welding torch fixing platform 2-2. The lifting gears 2-4 are arranged oppositely on both sides of the welding torch fixing platform 2-2, and the lifting motor assembly 2-3 is poweredly connected to the lifting gear 2-4 on one side. The welding torch fixing platform 2-2 is embedded between the lifting rails 2-5, and the lifting gears 2-4 are meshed with the lifting gears 2-6 inside the rails 2-5. The lifting motor assembly 2-3 and the translation drive motor assembly 2-9 are electrically connected to the electrical control cabinet 6 through the cable conduit 5. The welding torch head 2-1 is integrally connected to the welding machine 7 through the cable conduit 5. The translation platform 2-7 is embedded in the side sliding rail 1-2, and the platform pulleys 2-8 are embedded in the side grooves on both sides of the side sliding rail 1-2.

[0030] The end mounting rollers 3-2 in the end positioning structures 3 on both sides are of different sizes. Each end mounting roller 3-2 consists of a round roller 32-1, a roller shaft 32-2, and a roller bearing 32-3. The roller shaft 32-2 is connected to the center of the round roller 32-1 through the roller bearing 32-3. The outer side of the round roller 32-1 has several sets of L-shaped end slots 32-4. These L-shaped end slots 32-4 are arranged at equal circumferential angles on the outside of the round roller 32-1, and the short groove surface of the L-shaped end slots 32-4 is located on the outer side of the round roller 32-1. The adjustable mounting lifting column 3-3 consists of an upper fixed head 33-1, a lifting gear column 33-2, a lower fixed cylinder 33-3, a hand crank 33-4, a lifting gear box 33-5, and a locking ratchet 33-6. The hand crank 33-4 and the lifting gear... The wheel box 33-5 and the locking ratchet 33-6 are coaxially arranged. The locking ratchet 33-6 and the hand crank 33-4 are oppositely arranged on both sides of the lifting gear box 33-5. The lifting gear box 33-5 is fixed to one side of the top of the lower fixed cylinder 33-3. The upper fixed head 33-1 is set at the top of the lifting gear column 33-2, and the upper fixed head 33-1 and the lifting gear column 33-2 are integrally arranged. The lifting gear column 33-2 is inserted into the lower fixed cylinder 33-3, and the side of the lifting gear box 33-5 is meshed with the side of the lifting gear column 33-2. The roller shaft 32-2 in the end mounting roller 3-2 is fixed on the upper fixed head 33-1. The support plate 3-6 in the support structure 4 is fixed on the upper fixed head 33-1. The lower fixed cylinder 33-3 is correspondingly fixed at the center of the end loading plate 3-1.

[0031] In practical applications, the combination of welding machine 7 and welding torch head 2-1 can be achieved using a MIG / MAG welding machine or a resistance welding machine.

[0032] The working principle of this equipment tooling during operation is as follows: First, based on the diameter and length parameters of the steel reinforcement cage of the cement pole to be processed, the end positioning structure 3 and the supporting structure 4 slide along the sliding track 1-3 of the welding base frame 1. The spacing is precisely adjusted through the graduated positioning grooves 1-4 to ensure that it meets the size requirements of the steel reinforcement cage. Then, the positioning tip bolts of the loading plate are tightened to complete the fixation and enhance the structural stability. Subsequently, the height of the adjustable installation lifting column 3-3 is adjusted by cranking the hand crank handle 33-4 so that the height of the L-shaped end groove 32-4 of the end mounting roller 3-2 and the supporting plate 3-6 matches the diameter of the steel reinforcement, thereby ensuring that the steel reinforcement is placed stably and aligned. Because the long steel bars of the cement pole steel reinforcement cage are bent at both ends, the bent ends of the steel bars can be directly embedded into the L-shaped end grooves 32-4 of the end mounting rollers 3-2 on both sides, with the middle resting on the supporting plate 3-6. The rotation characteristics of the end mounting rollers 3-2 are used to straighten the steel bars and maintain their positioning, avoiding bending or displacement of the steel bars and ensuring the accuracy of subsequent welding. Start the electrical control cabinet. The translation drive motor unit moves the translation platform along the side sliding track to the welding position. The lifting motor unit drives the welding torch fixing platform to adjust the height of the welding torch head along the lifting track, ensuring the welding torch head is accurately aligned with the rebar welding node. Power is supplied to the welding torch head through the cable conduit of the welding machine. Set appropriate welding parameters. After completing a single-point weld, rotate the end-mounted roller 3-2 to adjust the angle of the rebar. Repeat the translation and lifting actions to achieve full-circumference welding of the rebar cage, ensuring uniform, firm, and complete welds. After welding, loosen the positioning tip bolts 3-4 on the loading plate, carefully remove the formed rebar cage, and perform a preliminary inspection to ensure the welding quality meets standards. Finally, clean the work area for future use.

[0033] The above description represents a preferred embodiment of the present invention. For those skilled in the art, any changes, modifications, substitutions, and variations made to the implementation methods without departing from the principles and spirit of the present invention, based on the teachings of the present invention, still fall within the protection scope of the present invention.

Claims

1. A positioning and welding fixture for the reinforcing cage of a cement pole, characterized in that, The system includes a welding base frame (1), a welding structure (2), an end positioning structure (3), a support structure (4), a cable tray (5), an electrical control cabinet (6), and an electric welding machine (7). The electric welding machine (7) and the electrical control cabinet (6) are arranged side by side on one side of the welding base frame (1). The cable tray (5) is arranged parallel to one side of the welding base frame (1). The welding structure (2) is connected to one side of the welding base frame (1), and the welding structure (2) is connected to the electric welding machine (7) through the cable tray (5). The control cabinet (6) and the welding machine (7) are provided. The welding structure (2) can slide laterally on the side of the welding base frame (1). The end positioning structure (3) is set opposite to each other and is connected to the welding base frame (1). The support structure (4) is arranged between the two end positioning structures (3) and is connected to the welding base frame (1). The end positioning structure (3) and the support structure (4) can slide laterally on the welding base frame (1).

2. The positioning and welding fixture for the reinforcing cage of a cement pole according to claim 1, characterized in that, The welding base frame (1) consists of a base frame (1-1), a side slide rail (1-2), a front slide rail (1-3), and a graduated positioning groove (1-4). The front slide rail (1-3) is located on the square part of the base frame (1-1), and the side slide rail (1-2) is located on the upper side of the base frame (1-1). The side slide rail (1-2) and the front slide rail (1-3) are arranged side by side and parallel to each other. The center bottom side of the front slide rail (1-3) is provided with a graduated groove. The positioning groove (1-4) is connected to the side slide rail (1-2), and the welding structure (2) can slide laterally in the side slide rail (1-2). The end positioning structure (3) and the supporting structure (4) are connected to the front slide rail (1-3), and the end positioning structure (3) and the supporting structure (4) can slide laterally in the front slide rail (1-3). The bottom side of the end positioning structure (3) and the supporting structure (4) can be fitted and fixed on the graduated positioning groove (1-4).

3. The positioning and welding fixture for the reinforcing cage of a cement pole according to claim 2, characterized in that, The end positioning structure (3) consists of an end loading plate (3-1), an end mounting roller (3-2), an adjustable mounting lifting column (3-3), a loading plate positioning tip bolt (3-4), and a loading plate side moving pulley (3-5). The loading plate side moving pulley (3-5) is connected to both ends of the end loading plate (3-1) in an opposing arrangement. The adjustable mounting lifting column (3-3) is fixed at the center of the end loading plate (3-1). Positioning screw holes (3-7) are provided on the end loading plate (3-1) on both sides of the adjustable mounting lifting column (3-3). The loading plate positioning tip bolt (3-4) is threaded through and connected to the positioning screw hole (3-7). The end mounting roller (3-2) is connected to the top side of the adjustable mounting lifting column (3-3).

4. The positioning and welding fixture for the reinforcing cage of a cement pole according to claim 3, characterized in that, The supporting structure (4) consists of an end loading plate (3-1), an adjustable lifting column (3-3), a loading plate positioning tip bolt (3-4), a loading plate side moving pulley (3-5), and a support plate (3-6). The loading plate side moving pulley (3-5) is connected to both ends of the end loading plate (3-1) in an opposing manner. The adjustable lifting column (3-3) is fixed at the center of the end loading plate (3-1). Positioning screw holes (3-7) are provided on the end loading plate (3-1) on both sides of the adjustable lifting column (3-3). The loading plate positioning tip bolt (3-4) is threaded through and connected to the positioning screw hole (3-7). The support plate (3-6) is fixed to the top of the adjustable installation lifting column (3-3). The end loading plate (3-1) in the end positioning structure (3) and the support structure (4) is set on the positive slide rail (1-3). The side moving pulley (3-5) of the loading plate is embedded in the side grooves of the positive slide rail (1-3). The bottom end of the loading plate positioning tip bolt (3-4) passes through the positioning screw hole (3-7) and is engaged and fixed with the graduated positioning tooth groove (1-4).

5. The positioning and welding fixture for the reinforcing cage of a cement pole according to claim 2, characterized in that, The welding structure (2) consists of a welding torch head (2-1), a welding torch fixing platform (2-2), a lifting motor assembly (2-3), a lifting gear (2-4), a lifting rail (2-5), lifting teeth inside the rail (2-6), a translation platform (2-7), platform pulleys (2-8), and a translation drive motor assembly (2-9). The welding torch head (2-1) is fixed on the welding torch fixing platform (2-2). The lifting rail (2-5) is fixed opposite to each other on the translation platform (2-7). The platform pulleys (2-8) are opposite to each other on the two corners of the translation platform (2-7). The lifting rail (2-5) is provided with lifting teeth (2-6) inside the rail on opposite sides. The translation drive motor assembly (2-9) is fixed on one side of the translation platform (2-7), and the translation drive motor assembly (2-9) is poweredly connected to the platform pulley (2-8) on one side. The lifting motor assembly (2-3) is fixed on one side of the welding torch fixing platform (2-2). The lifting gears (2-4) are arranged opposite to each other on both sides of the welding torch fixing platform (2-2). The lifting motor assembly (2-3) is poweredly connected to the lifting gear (2-4) on one side. The welding torch fixing platform (2-2) is embedded between the lifting rails (2-5). The lifting gear (2-4) is meshed with the lifting gear (2-6) inside the rail on the inner side of the lifting rail (2-5). The lifting motor assembly (2-3) and the translation drive motor assembly (2-9) are electrically connected to the electrical control cabinet (6) through the cable conduit groove (5). The welding torch head (2-1) is integrally connected to the welding machine (7) through the cable conduit groove (5). The translation platform (2-7) is embedded in the side sliding rail (1-2). The platform pulley (2-8) is embedded in the side grooves on both sides of the side sliding rail (1-2).

6. The positioning and welding fixture for the reinforcing cage of a cement pole according to claim 4, characterized in that, The end mounting rollers (3-2) in the end positioning structures (3) on both sides are set in different sizes. The end mounting rollers (3-2) are composed of a round roller (32-1), a roller shaft (32-2), and a roller bearing (32-3). The roller shaft (32-2) is connected to the center of the round roller (32-1) through the roller bearing (32-3). Several sets of L-shaped end slots (32-4) are opened on the outer side of the round roller (32-1). 32-4) The circumferential angle is set outside the circular roller (32-1), and the short groove surface of the L-shaped end groove (32-4) is set on the outer side of the circular roller (32-1). The adjustable installation lifting column (3-3) is composed of an upper fixed head (33-1), a lifting gear column (33-2), a lower fixed cylinder (33-3), a hand crank (33-4), a lifting gear box (33-5), and a locking ratchet (33-6). The hand crank (33-4) and the lifting gear... The gearbox (33-5) and locking ratchet (33-6) are coaxially arranged. The locking ratchet (33-6) and the hand crank (33-4) are oppositely arranged on both sides of the lifting gearbox (33-5). The lifting gearbox (33-5) is fixed to one side of the top of the lower fixed cylinder (33-3). The upper fixed head (33-1) is located at the top of the lifting gear column (33-2), and the upper fixed head (33-1) and the lifting gear column (33-2) are integrally formed. (33-2) is inserted into the lower fixed cylinder (33-3) and the side of the lifting gear box (33-5) is meshed with the side of the lifting gear column (33-2). The roller shaft (32-2) in the end mounting roller (3-2) is fixed on the upper fixed head (33-1). The support plate (3-6) in the support structure (4) is fixed on the upper fixed head (33-1). The lower fixed cylinder (33-3) is fixed at the center of the end loading plate (3-1).

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