Electric power iron tower H-shaped steel cutting device

Abstract

The invention relates to a steel cutting device, in particular to an electric iron tower H-shaped steel cutting device. Comprising a supporting frame, supporting columns, an electric sliding rail, a supporting rod, a rotating motor, a circular saw blade, a conveying shaft, a connecting piece and a first elastic piece, the supporting columns are symmetrically arranged at the top end of the supporting frame front and back, the supporting rod is slidably connected between the two supporting columns, the electric sliding rail is arranged in the supporting column on the rear side, and a moving piece of the electric sliding rail is connected with the supporting rod; a rotating motor is arranged on the supporting rod, a circular saw blade is connected to an output shaft of the rotating motor, a conveying shaft is rotationally connected to the top end of the supporting frame, connecting pieces are arranged at the front end and the rear end of the conveying shaft, and first elastic pieces are arranged in the connecting pieces. Through the linkage design that the blocking plate is driven by the screw to be matched with the graduated scale and the scale pointer, accurate adjustment of the cutting length is achieved, and the error problem caused by traditional manual measurement is effectively solved.

Description

Technical Field

[0001] The present invention relates to a steel cutting device, and particularly to an H-shaped steel cutting device for power transmission towers. Background Art

[0002] The H-shaped steel cutting device for power transmission towers is a highly efficient special device designed for the fixed-length cutting of H-shaped steel in the construction of power transmission towers. In modern power transmission systems, power transmission towers play a crucial role. They not only support high-voltage transmission lines but also withstand various harsh weather conditions. Therefore, the construction quality of the towers is of utmost importance, and the H-shaped steel, as the core material of the main structure of the towers, is of self-evident importance.

[0003] In some existing H-shaped steel cutting devices for power transmission towers, during the process of cutting the H-shaped steel, it is usually mainly dependent on manual measurement of the length of the H-shaped steel to be cut. Manual measurement is prone to errors, resulting in inconsistent cutting lengths and affecting subsequent assembly. There are also some H-shaped steel cutting devices for power transmission towers designed with a stop plate. After the H-shaped steel touches the stop plate, the distance between the stop plate and the circular saw blade is measured as the basis for the cutting length of the H-shaped steel, and then the H-shaped steel is cut. However, since the H-shaped steel is in hard contact with the stop plate, after the H-shaped steel collides with the stop plate, under the action of the reaction force, the H-shaped steel will rebound to a certain extent. If the distance between the stop plate and the circular saw blade is still used as the measurement basis at this time, it will cause deviations in the cutting of the H-shaped steel. Summary of the Invention

[0004] In order to overcome the shortcomings in the above background art that some H-shaped steel cutting devices for power transmission towers rely on manual measurement of the length of the H-shaped steel to be cut, which is prone to errors, and some H-shaped steel cutting devices for power transmission towers are prone to cutting deviations, the purpose of the present invention is to provide an H-shaped steel cutting device for power transmission towers.

[0005] The technical solution of the present invention is as follows: A cutting device for H-shaped steel of a power transmission tower, comprising a support frame, support columns, an electric slide rail, support rods, a rotating motor, a circular saw blade, a conveying shaft, a connecting piece, a gear, a first elastic member, a rack, a connecting rod, a blocking plate, a screw rod, a scale and a scale pointer. Support columns are symmetrically arranged at the front and rear of the top of the support frame. A support rod is slidably connected between the two support columns. An electric slide rail is arranged inside the rear support column. The moving member of the electric slide rail is connected to the support rod. A rotating motor is arranged on the support rod. The output shaft of the rotating motor is connected with a circular saw blade. The top of the support frame is rotatably connected with a conveying shaft. Connecting pieces are arranged at both the front and rear ends of the conveying shaft. A first elastic member is arranged inside the connecting piece. Gears are arranged on the connecting pieces. Connecting rods are symmetrically arranged at the front and rear of the left end of the support rod. The bottom end of the connecting rod is connected with a rack, and the rack can be meshed with the gear. A blocking plate is slidably connected to the right side of the top of the support frame. A screw rod is rotatably connected to one side of the top of the support frame. The screw rod is threadedly connected to the blocking plate. A scale is arranged on the right side of the front end of the support frame. A scale pointer is arranged at the front end of the blocking plate, and the scale pointer indicates the scale.

[0006] Preferably, it further comprises a water tank, a water storage pipe, a piston rod, a first water pipe, a second water pipe, an expansion water bag, a spray head and a one-way valve. A water tank is arranged at the top of the support column. Rectangular through holes are opened on both support columns. Water storage pipes are arranged at the mutually remote ends of the two support columns. A second water pipe is connected between the water storage pipe and the water tank. A one-way valve is arranged on the second water pipe. A piston rod is slidably connected inside the water storage pipe. Both piston rods pass through the rectangular through holes and are connected to the support rod. The bottom end of the water storage pipe is connected with a first water pipe. The other end of the first water pipe is connected with an expansion water bag. The other end of the expansion water bag is connected with a spray head, and the spray head is connected to the protective shell on the circular saw blade.

[0007] Preferably, it further comprises a pressing rod, a square pressing block and a spring. Pressing rods are slidably connected to both the left and right ends of the support rod. Square pressing blocks are connected to the bottom ends of the pressing rods. Springs are connected between the square pressing blocks and the support rod.

[0008] Preferably, it further comprises a U-shaped extrusion block, a push rod, a second elastic member and a cylindrical protrusion. U-shaped extrusion blocks are symmetrically and slidably connected to the front and rear of the top of the support frame. A second elastic member is connected between the U-shaped extrusion block and the support frame. Cylindrical protrusions are symmetrically arranged on the left and right sides inside the U-shaped extrusion block. Push rods are symmetrically arranged at the front and rear of the support rod, and the push rods are in contact with the cylindrical protrusions.

[0009] Preferably, it further comprises a roller path, a driving motor and a belt pulley transmission member. Roller paths are rotatably connected to the top of the support frame in sequence at intervals from left to right. A driving motor is connected to the left side of the support frame. The output shaft of the driving motor is connected to the leftmost roller path. Belt pulley transmission members are connected between adjacent roller paths.

[0010] Preferably, it further includes wheels. The four corners at the bottom end of the support frame are rotatably connected with wheels, and stop switches are arranged on the wheels.

[0011] Preferably, it further includes protective shells. Protective shells are installed at both the front and rear ends of the support frame.

[0012] Preferably, it further includes a rotating disk and a sponge sleeve. The right end of the screw rod is connected with the rotating disk. An eccentric handle is arranged at the right end of the rotating disk, and a sponge sleeve is sleeved outside the handle of the rotating disk.

[0013] Preferably, it further includes a guide rod. A guide rod is arranged at the rear side of the top end of the support frame, and the guide rod is slidably connected with the blocking plate.

[0014] Preferably, the connecting piece is composed of two connecting shafts. One side of the connecting shaft is fixedly connected with the conveying shaft, and one side of the connecting shaft is rotatably connected with the support frame. The two connecting shafts are in contact with each other. Semi-circular convex blocks are circumferentially arranged at intervals at the ends of the two connecting shafts close to each other. The first elastic member is located in the connecting shaft connected with the support frame. The scales on the scale gradually increase from left to right, and the leftmost end of the scale is flush with the circular saw blade.

[0015] Beneficial effects: Through the linkage design of the screw rod driving the blocking plate in cooperation with the scale and the scale pointer, the present invention realizes the precise adjustment of the cutting length, effectively solves the error problem caused by traditional manual measurement. The design that the leftmost end of the scale is aligned with the circular saw blade ensures the consistency between the measurement reference and the cutting position, and avoids the cutting deviation caused by the deviation of the measurement reference; the unique gear-rack transmission and the design in cooperation with the connecting piece enable the automatic calibration of the H-shaped steel during the downward movement of the support rod; after the H-shaped steel contacts the blocking plate and rebounds, the connecting piece will drive the conveying shaft, so that the H-shaped steel abuts against the blocking plate, automatically compensating for the small displacement caused by the contact, and completely solving the rebound error problem caused by traditional hard contact. Description of the Drawings

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0017] Figure 2 It is a three-dimensional structural schematic diagram of components such as wheels of the present invention.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of components such as roller paths of the present invention.

[0019] Figure 4 It is a three-dimensional structural schematic diagram of components such as the blocking plate of the present invention.

[0020] Figure 5 It is a three-dimensional structural schematic diagram of components such as support columns of the present invention.

[0021] Figure 6Schematic three-dimensional structure diagram of components such as the connecting piece of the present invention.

[0022] Figure 7 Schematic three-dimensional structure diagram of components such as the U-shaped extrusion block of the present invention.

[0023] Figure 8 Schematic three-dimensional structure diagram of components such as the push rod of the present invention.

[0024] Figure 9 Schematic three-dimensional structure diagram of components such as the cylindrical protrusion of the present invention.

[0025] Figure 10 Schematic three-dimensional structure diagram of components such as the pressure bar of the invention.

[0026] Figure 11 Schematic three-dimensional structure diagram of components such as the water tank of the invention.

[0027] Reference numerals in the drawings: 1 - support frame, 101 - wheel, 102 - protective shell, 3 - roller path, 301 - drive motor, 302 - pulley transmission member, 4 - support column, 401 - electric slide rail, 402 - support rod, 403 - rotating motor, 404 - circular saw blade, 405 - rectangular through hole, 5 - conveying shaft, 501 - connecting piece, 503 - gear, 513 - first elastic member, 504 - rack, 514 - connecting rod, 6 - blocking plate, 601 - screw rod, 602 - guide rod, 603 - rotating disk, 604 - scale, 614 - scale pointer, 605 - sponge sleeve, 7 - water tank, 701 - water storage pipe, 702 - piston rod, 703 - first water pipe, 713 - second water pipe, 704 - expansion water bag, 705 - nozzle, 706 - one-way valve, 8 - pressure bar, 801 - square pressure block, 802 - spring, 9 - U-shaped extrusion block, 902 - push rod, 903 - second elastic member, 904 - cylindrical protrusion. Detailed implementation manners

[0028] The present invention will be further described below in conjunction with the drawings and specific implementation manners.

[0029] A cutting device for H-shaped steel of a power transmission tower, as Figures 1 - 8As shown in the figure, it includes a support frame 1, support columns 4, an electric slide rail 401, support rods 402, a rotary motor 403, a circular saw blade 404, a conveying shaft 5, connecting pieces 501, gears 503, a first elastic member 513, a rack 504, a connecting rod 514, a baffle 6, a screw rod 601, a scale 604 and a scale pointer 614. Support columns 4 are symmetrically arranged at the front and back of the top end of the support frame 1. A support rod 402 is slidably connected between the two support columns 4. An electric slide rail 401 is arranged inside the rear support column 4. The moving member of the electric slide rail 401 is connected to the support rod 402. The electric slide rail 401 can drive the support rod 402 to move up and down. A rotary motor 403 is arranged on the support rod 402. A circular saw blade 404 is connected to the output shaft of the rotary motor 403. The rotary motor 403 is responsible for driving the circular saw blade 404 to rotate to complete the cutting operation of the H-shaped steel. The conveying shaft 5 is rotatably connected to the top end of the support frame 1. Connecting pieces 501 are arranged at both the front and back ends of the conveying shaft 5. A first elastic member 513 is arranged inside the connecting pieces 501. Gears 503 are arranged on the connecting pieces 501. Connecting rods 514 are symmetrically arranged at the front and back of the left end of the support rod 402. A rack 504 is connected to the bottom end of the connecting rod 514. The rack 504 can be meshed with the gear 503. During the downward movement of the support rod 402, the rack 504 will drive the gear 503 to rotate, thereby driving the conveying shaft 5 to rotate. A baffle 6 is slidably connected to the right side of the top end of the support frame 1. A screw rod 601 is rotatably connected to the right side of the top end of the support frame 1. The screw rod 601 is threadedly connected to the baffle 6. A scale 604 is arranged on the front right side of the support frame 1. A scale pointer 614 is arranged at the front end of the baffle 6. The scale pointer 614 indicates the scale 604. Rotating the screw rod 601 will cause the baffle 6 to move left and right along the support frame 1, thereby causing the scale pointer 614 to indicate different scales on the scale 604.

[0030] As Figure 1 and Figure 11As shown in the figure, it further includes a water tank 7, a water storage pipe 701, a piston rod 702, a first water pipe 703, a second water pipe 713, an expansion water bag 704, a spray head 705 and a one-way valve 706. A water tank 7 is provided at the top end of the support column 4. Rectangular through holes 405 are opened on both support columns 4. Water storage pipes 701 are provided at one end of each of the two support columns 4 away from each other. A second water pipe 713 is connected between the water storage pipe 701 and the water tank 7. A one-way valve 706 is provided on the second water pipe 713. A piston rod 702 is slidably connected in the water storage pipe 701. Both piston rods 702 pass through the rectangular through holes 405 and are connected to the support rod 402. The bottom end of the water storage pipe 701 is connected to a first water pipe 703. The other end of the first water pipe 703 is connected to an expansion water bag 704. The other end of the expansion water bag 704 is connected to a spray head 705. The spray head 705 is connected to the protective shell on the circular saw blade 404. The flow rate of the water sprayed from the spray head 705 is determined by the pressure at the expansion water bag 704. During the downward movement of the support rod 402, the support rod 402 drives the piston rod 702 to move downward along the water storage pipe 701. The piston rod 702 squeezes the water in the water storage pipe 701. Since the water flow rate pushed out of the water storage pipe 701 by the piston rod 702 is much larger than the water flow rate sprayed from the spray head 705, part of the water is sprayed out from the spray head 705 through the first water pipe 703 via the expansion water bag 704, and the other part of the water accumulates in the expansion water bag 704, and the volume of the expansion water bag 704 increases accordingly, and the pressure in the expansion water bag 704 also gradually increases. At this time, the water flow rate sprayed from the spray head 705 gradually increases (during this process, the spray head 705 moves downward following the circular saw blade 404). When the circular saw blade 404 does not cut the H-shaped steel, the water flow rate is small. During the process of the circular saw blade 404 cutting the H-shaped steel, the increasing water flow continuously cools the circular saw blade 404 to prevent the circular saw blade 404 from being damaged due to overheating. When the support rod 402 moves upward, it will drive the piston rod 702 to move upward, and the water in the water tank 7 flows into the water storage pipe 701 through the one-way valve 706, so that the water storage pipe 701 is filled with water.

[0031] As Figure 1 and Figure 10 shown in the figure, it further includes a pressure rod 8, a square pressing block 801 and a spring 802. Pressure rods 8 are slidably connected to the left and right ends of the support rod 402. Square pressing blocks 801 are connected to the bottom ends of the pressure rods 8. Springs 802 are connected between the square pressing blocks 801 and the support rod 402. During the process of the circular saw blade 404 cutting the H-shaped steel, the pressure rod 8 always presses the upper end of the H-shaped steel to prevent the H-shaped steel from moving.

[0032] As Figures 7 - 9As shown in the figure, it further includes a U-shaped extrusion block 9, a push rod 902, a second elastic member 903, and a cylindrical protrusion 904. The top end of the support frame 1 is symmetrically and slidably connected with the U-shaped extrusion block 9 before and after. A second elastic member 903 is connected between the U-shaped extrusion block 9 and the support frame 1. Cylindrical protrusions 904 are symmetrically arranged on the left and right sides inside the U-shaped extrusion block 9. Push rods 902 are symmetrically arranged on the support rod 402 before and after. The push rod 902 is in contact with the cylindrical protrusion 904. During the process of the circular saw blade 404 cutting the H-shaped steel, the two U-shaped extrusion blocks 9 are responsible for clamping the front and rear ends of the H-shaped steel.

[0033] As Figures 1 - 3 shown in the figure, it further includes a roller path 3, a driving motor 301, and a pulley transmission member 302. The top end of the support frame 1 is successively and rotatably connected with the roller path 3 at intervals from left to right. The driving motor 301 is connected to the left side of the support frame 1. The output shaft of the driving motor 301 is connected to the leftmost roller path 3. A pulley transmission member 302 is connected between adjacent roller paths 3. The driving motor 301 drives the leftmost roller path 3 to rotate, and drives the remaining roller paths 3 to rotate through the pulley transmission member 302. The rotating roller path 3 can be used for the conveying of the H-shaped steel.

[0034] As Figure 1 and Figure 2 shown in the figure, it further includes wheels 101 and protective shells 102. The four corners at the bottom end of the support frame 1 are all rotatably connected with wheels 101. The design of the wheels 101 facilitates people to move this device when needed. A stop switch is provided on the wheels 101. Protective shells 102 are installed at the front and rear ends of the support frame 1. The protective shells 102 cover the outside of the driving motor 301 and the pulley transmission member 302, which can protect the driving motor 301 and the pulley transmission member 302, and can also prevent people from accidentally touching the pulley transmission member 302.

[0035] As Figure 1 and Figure 4 shown in the figure, it further includes a guide rod 602, a rotating disk 603, and a sponge sleeve 605. A guide rod 602 is provided at the rear side of the top end of the support frame 1. The guide rod 602 is slidably connected with the blocking plate 6. During the movement of the blocking plate 6, the guide rod 602 guides the blocking plate 6. The right end of the screw rod 601 is connected with a rotating disk 603. An eccentric position at the right end of the rotating disk 603 is provided with a handle. By rotating the rotating disk 603, the screw rod 601 can be rotated, and then the blocking plate 6 can be moved. A sponge sleeve 605 is sleeved outside the handle of the rotating disk 603, and the sponge sleeve 605 improves the comfort of the handle.

[0036] As Figure 1 and Figure 6As shown, the connecting member 501 is composed of two connecting shafts. One side of the connecting shaft is fixedly connected to the conveying shaft 5, and the other side of the connecting shaft is rotatably connected to the support frame 1. The two connecting shafts are in contact with each other. Semicircular convex blocks are circumferentially spaced at one end of the two connecting shafts close to each other. The first elastic member 513 is located in the connecting shaft connected to the support frame 1. The scales on the scale 604 gradually increase from left to right, and the leftmost end of the scale 604 is flush with the circular saw blade 404.

[0037] Before using this device, first, the position of the baffle 6 should be adjusted to determine the cutting length of the H-beam. Hold the handle on the rotating disk 603 and rotate the rotating disk 603 so that the screw 601 drives the baffle 6 to move. Observe the scale indicated by the scale pointer 614 on the scale 604. When the scale indicated by the scale pointer 614 is consistent with the required cutting length of the H-beam, stop rotating the rotating disk 603. Place the H-beam to be cut on the left roller path 3 at the top of the support frame 1, start the drive motor 301, and the drive motor 301 drives the leftmost roller path 3 to rotate. The power is transmitted through the pulley transmission part 302 to drive the remaining roller paths 3 to rotate. The roller paths 3 transmit the H-beam to the right. When the right end of the H-beam touches the baffle 6, turn off the drive motor 301 and start the rotating motor 403. The rotating motor 403 drives the circular saw blade 404 to rotate. At the same time, the moving part of the electric slide rail 401 drives the support rod 402 to move downward. During the downward movement of the support rod 402, the connecting rod 514 moves downward to drive the rack 504 to mesh with the gear 503, and the gear 503 drives the connecting part 501 to rotate, thereby making the conveying shaft 5 rotate. The conveying shaft 5 transmits the H-beam to the right, making the H-beam touch and closely adhere to the left end of the baffle 6. When the H-beam touches the left end of the baffle 6, the rack 504 continues to drive the gear 503 to rotate. However, at this time, since the H-beam does not move to the right, under the action of the H-beam, the conveying shaft 5 will receive the frictional force from the H-beam. When this frictional force is greater than the transmission force between the two connecting shafts on the connecting part 501, the conveying shaft 5 will stop rotating, and the connecting shafts connected to the conveying shaft 5 will also stop moving. The semi-circular protrusions on the two connecting shafts rub against each other, and the connecting shaft connected to the support frame 1 will be compressed towards one side of the support frame 1. The first elastic member 513 changes from the initial state to the compressed state. After that, the connecting shaft connected to the support frame 1 will rotate by itself under the drive of the rack 504. Left and right clamping: During the downward movement of the support rod 402, the lower vertical rod part of the push rod 902 first contacts the cylindrical protrusion 904. During this process, the position of the U-shaped extrusion block 9 does not change. When the middle inclined rod part of the push rod 902 contacts the cylindrical protrusion 904, the U-shaped extrusion blocks 9 on both sides of the H-beam will approach the H-beam and fix and clamp the H-beam. The H-beam touches and closely adheres to the left end of the baffle 6, which is achieved before the U-shaped extrusion block 9 clamps the H-beam. When the upper vertical rod part of the push rod 902 contacts the cylindrical protrusion 904, the fixing and clamping of the H-beam by the U-shaped extrusion block 9 remain unchanged. Up and down clamping: When the bottom end of the square pressing block 801 touches the H-beam, the support rod 402 continues to move downward, and the upper part of the square pressing block 801 passes through the upper side of the support rod 402. During this process, the spring 802 changes from the initial state to the compressed state. Under the action of the spring 802, the square pressing block 801 presses down on the H-beam. After that, the circular saw blade 404 contacts the H-beam and cuts the H-beam. After the circular saw blade 404 rotates to cut the H-beam, turn off the rotating motor 403.The electric slide rail 401 drives the support rod 402 to move upward, the push rod 902 moves upward, and re-squeezes the cylindrical protrusion 904, causing the two U-shaped extrusion blocks 9 to move away from each other and no longer clamp the H-shaped steel. At this time, people can take away the cut H-shaped steel on the support frame 1, start the drive motor 301 again, and repeat the above operations to cut the remaining H-shaped steel again.

[0038] Although the present disclosure has been shown and described with reference to specific exemplary embodiments thereof, those skilled in the art should understand that various changes in form and detail may be made therein without departing from the spirit and scope of the present disclosure as defined by the appended claims and their equivalents. Therefore, the scope of the present disclosure should not be limited to the above embodiments, but should be determined not only by the appended claims but also by the equivalents of the appended claims.

Claims

1. A cutting device for H-shaped steel of a power transmission tower, comprising a support frame (1), characterized in that: It further includes support columns (4), electric slide rails (401), support rods (402), rotary motors (403), circular saw blades (404), conveying shafts (5), connecting pieces (501), gears (503), first elastic members (513), racks (504), connecting rods (514), blocking plates (6), screws (601), scale rulers (604) and scale pointers (614). Support columns (4) are symmetrically arranged at the front and rear of the top end of the support frame (1). A support rod (402) is slidably connected between the two support columns (4). An electric slide rail (401) is arranged inside the rear support column (4). The moving member of the electric slide rail (401) is connected to the support rod (402). A rotary motor (403) is arranged on the support rod (402). A circular saw blade (404) is connected to the output shaft of the rotary motor (403). A conveying shaft (5) is rotatably connected to the top end of the support frame (1). Connecting pieces (501) are arranged at both the front and rear ends of the conveying shaft (5). A first elastic member (513) is arranged inside the connecting piece (501). Gears (503) are arranged on the connecting pieces (501). Connecting rods (514) are symmetrically arranged at the front and rear of the left end of the support rod (402). A rack (504) is connected to the bottom end of the connecting rod (514). The rack (504) can be meshed with the gear (503). A blocking plate (6) is slidably connected to the right side of the top end of the support frame (1). A screw (601) is rotatably connected to one side of the top end of the support frame (1). The screw (601) is threadedly connected to the blocking plate (6). A scale ruler (604) is arranged on the right side of the front end of the support frame (1). A scale pointer (614) is arranged at the front end of the blocking plate (6). The scale pointer (614) indicates the scale ruler (604).

2. A cutting device for H-shaped steel of a power transmission tower according to claim 1, characterized in that: It further includes a water tank (7), a water storage pipe (701), a piston rod (702), a first water pipe (703), a second water pipe (713), an expansion water bag (704), a spray head (705) and a one-way valve (706). A water tank (7) is arranged at the top end of the support column (4). Rectangular through holes (405) are formed in both support columns (4). Water storage pipes (701) are arranged at the mutually remote ends of the two support columns (4). A second water pipe (713) is connected between the water storage pipe (701) and the water tank (7). A one-way valve (706) is arranged on the second water pipe (713). A piston rod (702) is slidably connected inside the water storage pipe (701). Both piston rods (702) pass through the rectangular through holes (405) and are connected to the support rod (402). The bottom end of the water storage pipe (701) is connected to a first water pipe (703). The other end of the first water pipe (703) is connected to an expansion water bag (704). The other end of the expansion water bag (704) is connected to a spray head (705). The spray head (705) is connected to the protective shell on the circular saw blade (404).

3. A cutting device for H-shaped steel of a power transmission tower according to claim 2, characterized in that: It further includes a pressure rod (8), a square pressing block (801) and a spring (802). The left and right ends of the support rod (402) are both slidably connected with the pressure rod (8). The bottom ends of the pressure rods (8) are both connected with the square pressing block (801). A spring (802) is connected between the square pressing block (801) and the support rod (402).

4. A cutting device for H-shaped steel of a power transmission tower according to claim 3, characterized in that: It further includes a U-shaped extrusion block (9), a push rod (902), a second elastic member (903) and a cylindrical protrusion (904). The top end of the support frame (1) is symmetrically and slidably connected with the U-shaped extrusion block (9) front and back. A second elastic member (903) is connected between the U-shaped extrusion block (9) and the support frame (1). Cylindrical protrusions (904) are symmetrically arranged on the left and right sides inside the U-shaped extrusion block (9). Push rods (902) are symmetrically arranged on the support rod (402) front and back. The push rods (902) are in contact with the cylindrical protrusions (904).

5. A cutting device for H-shaped steel of a power transmission tower according to claim 4, characterized in that: It further includes a roller path (3), a driving motor (301) and a pulley transmission member (302). The top end of the support frame (1) is sequentially and rotatably connected with the roller path (3) at intervals from left to right. The driving motor (301) is connected to the left side of the support frame (1). The output shaft of the driving motor (301) is connected to the leftmost roller path (3). A pulley transmission member (302) is connected between adjacent roller paths (3).

6. An H-shaped steel cutting device for a power transmission tower according to claim 5, characterized in that: It further includes wheels (101). The four corners of the bottom end of the support frame (1) are all rotatably connected with the wheels (101). A stop switch is provided on the wheels (101).

7. An H-shaped steel cutting device for a power transmission tower according to claim 6, characterized in that: It further includes a protective shell (102). The protective shells (102) are installed at the front and back ends of the support frame (1).

8. A cutting device for H-shaped steel of a power transmission tower according to claim 7, characterized in that: It further includes a rotating disc (603) and a sponge sleeve (605). The right end of the screw rod (601) is connected with the rotating disc (603). A handle is provided at the eccentric position at the right end of the rotating disc (603). A sponge sleeve (605) is sleeved outside the handle of the rotating disc (603).

9. A cutting device for H-shaped steel of a power transmission tower according to claim 8, characterized in that: It further includes a guide rod (602). The guide rod (602) is provided at the rear side of the top end of the support frame (1). The guide rod (602) is slidably connected with the blocking plate (6).

10. A cutting device for H-shaped steel of a power transmission tower according to claim 9, characterized in that: The connecting member (501) is composed of two connecting shafts. One connecting shaft is fixedly connected with the conveying shaft (5), and one connecting shaft is rotatably connected with the support frame (1). The two connecting shafts are in contact with each other. Semi-circular protrusions are circumferentially arranged at intervals at the ends of the two connecting shafts close to each other. The first elastic member (513) is located in the connecting shaft connected with the support frame (1). The scales on the scale (604) gradually increase from left to right. The leftmost end of the scale (604) is flush with the circular saw blade (404).

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