A safety protection device for climbing power transmission towers

Abstract

This invention discloses a safety protection device for climbing power transmission towers, belonging to the technical field of power transmission line maintenance. The device includes a mounting body serving as the installation carrier. A collar is installed at the top of the mounting body and fits around the outside of the tower foot spikes. An installation groove is formed in the middle of the mounting body, and a connecting mechanism is installed inside the groove. Clamping mechanisms that cooperate with the connecting mechanism are symmetrically arranged at the top of both ends of the mounting body. Driving mechanisms that cooperate with the connecting mechanism are symmetrically arranged on both sides of the mounting body. This invention uses a fastening mechanism to ensure a stable connection between the mounting body and the tower foot spikes. Combined with the connecting and clamping mechanisms, it further prevents the collar from slipping after it is fitted onto the tower foot spikes, thereby significantly improving the stability of the connection between the entire safety protection device and the tower foot spikes.

Description

Technical Field

[0001] This invention belongs to the field of power transmission line maintenance technology, specifically involving a new type of safety protection device for climbing power transmission towers. Background Technology

[0002] During the maintenance of power transmission lines on power towers, workers need to climb to the top of the tower and then cross the crossarm to enter the work area. Currently, the common safety measures used by workers during high-altitude tower climbing include rail-mounted fall protection and alternating double safety belts. The double safety belt method involves adding a protective belt to a traditional safety belt to form a double safety belt. The two safety belts are used alternately for climbing to ensure that at least one safety belt can connect the person to the tower during the climb, thus preventing falls.

[0003] Currently, when the safety harness of power workers is connected to the tower footings on the power tower, directly slipping the safety harness's collar onto the footings makes it difficult for the collar to stay securely in place. If the collar detaches from the footing, the safety protection for the power worker is lost. Furthermore, simply using a structure to limit the collar is insufficient to improve the stability of the connection between the safety harness collar and the footings. Additionally, if a power worker accidentally falls during climbing, the safety harness will exert a significant downward force on the safety harness on the footings, easily causing it to slip and reducing the stability of the connection. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide a safety protection device for climbing power transmission towers.

[0005] The technical solution adopted to solve the above-mentioned technical problems is: a safety protection device for climbing power transmission towers, including an installation body as an installation carrier, a collar installed at the top of the installation body and sleeved on the outside of the tower foot nail, an installation groove opened at the middle position of the installation body, a connecting mechanism provided inside the installation groove, clamping mechanisms that cooperate with the connecting mechanism symmetrically arranged at the top of both ends of the installation body, driving mechanisms that cooperate with the connecting mechanism symmetrically arranged on both sides of the installation body, limiting mechanisms that cooperate with the driving mechanism symmetrically arranged on both sides of the collar, and a fastening mechanism that cooperates with the connecting mechanism installed at one end of the installation body.

[0006] Furthermore, the connecting mechanism includes four sets of sliding rods located inside the mounting groove. A sliding block is sleeved on the outer side of the four sets of sliding rods. A strip plate is installed at the middle position of the bottom end of the sliding block. A square through groove is opened in the inner bottom of the mounting groove. The bottom end of the strip plate passes through the square through groove and is installed with an annular connector. A first return spring is sleeved on the outer side of the sliding rod, and the top and bottom ends of the first return spring are fixedly connected to the sliding block and the inner bottom of the mounting groove, respectively.

[0007] Through the above technical solution, when the annular connector is subjected to a large downward force, the annular connector pulls the sliding block to slide downward on the slide rod through the strip plate, while the first return spring is shortened by force and stores elastic potential energy, which buffers the downward force on the annular connector, thereby improving the tensile strength of the entire safety protection device when subjected to downward pulling force.

[0008] Furthermore, the clamping mechanism includes a fixing column, and two sets of fixing columns are provided, which are symmetrically distributed at the middle position of the top of both ends of the mounting body. Two sets of mutually cooperating semi-circular frames are sleeved on the outside of the fixing column. A torsion spring is sleeved at the middle position of the outside of the fixing column, and the two ends of the torsion spring are respectively fixedly connected to the two sets of semi-circular frames. Push-pull rods that cooperate with sliding blocks are installed at the bottom of both sets of semi-circular frames.

[0009] With the above technical solution, when the sliding block moves upward, it pushes the two sets of push-pull rods away from each other, thereby allowing the two sets of semi-circular frames to rotate and open around the fixed column. The torsion spring is subjected to force and stores torque. After the sliding block no longer applies force to the two sets of push-pull rods, the torque of the torsion spring forces the two sets of semi-circular frames to rotate around the fixed column to form a complete ring and fit onto the tower foot nail, ensuring the stability of the ring after it is fitted onto the tower foot nail.

[0010] Furthermore, the driving mechanism includes racks located on both sides of the strip plate, and strip-shaped through holes communicating with the interior of the mounting groove are symmetrically opened on both sides of the mounting body. A rotating shaft is provided at the bottom of the strip-shaped through hole, and an incomplete gear that meshes with the rack is installed on the outer side of the rotating shaft. A manual lever is installed on the outer side of the incomplete gear.

[0011] With the above technical solution, hold the outside of the mounting body and press the two sets of manual levers. Using the transmission of incomplete gears and racks, push the strip plate and slide block upwards slightly. During the process, the slide block pushes the push-pull rod to drive the semi-circular frame to rotate around the fixed column as the axis, so that the two pairs of semi-circular frames unfold. After releasing the pressure on the manual levers, the torque of the torsion spring can make the two sets of semi-circular frames re-merge into a ring and fix it to the outside of the tower foot nail.

[0012] Furthermore, the limiting mechanism includes two sets of movable frames located on both sides of the collar. Spring grooves are symmetrically provided at both ends of the inner side of the movable frame. Two sets of sliding columns are symmetrically installed on both sides of the collar, and one end of each set of sliding columns on the same side passes through the spring groove and is equipped with an anti-detachment block. A second return spring is sleeved on the outer side of the sliding column. The two ends of the second return spring are respectively fixedly connected to one end of the collar and the inside of the spring groove. Arc-shaped grooves that cooperate with the semi-circular frame are symmetrically provided at both ends of the inner side of the movable frame.

[0013] Through the above technical solution, when the annular connector is subjected to a downward force, the transmission of the incomplete gear and rack drives the two sets of manual levers to rotate upward around the rotation axis until the bottom ends of the two sets of manual levers are tightly pressed against the outside of the moving frame and push the moving frame to slide on the sliding column. This allows the arc-shaped groove to be tightly pressed against the outside of the semi-circular frame, so that the two sets of semi-circular frames can be stably formed into an annular ring without separating. At this time, the second return spring is compressed and stores elastic potential energy. When the manual levers are no longer in contact with the moving frame, the elastic potential energy of the second return spring can make the arc-shaped groove no longer press against the outside of the semi-circular frame.

[0014] Furthermore, the fastening mechanism includes a U-shaped frame located at the top of one end of the mounting body. A trapezoidal movable block that cooperates with the tower foot nail is hinged at the middle position of the bottom of the U-shaped frame. A T-shaped plate is installed on the outer side of the trapezoidal movable block. Two sets of connecting tension springs that are fixedly connected to the outer side of the mounting body are installed on the top of the inner side of the T-shaped plate. Limiting blocks are symmetrically installed on the bottom ends of both sides of the T-shaped plate. A mounting plate is installed on the end of the sliding block near the U-shaped frame. A wedge block that cooperates with the T-shaped plate is installed on the top of the outer side of the mounting plate. Pushing blocks that cooperate with the limiting blocks are symmetrically installed on the bottom of the outer side of the mounting plate.

[0015] Through the above technical solution, by utilizing the tension of the connecting spring in conjunction with the T-shaped plate, the top of the trapezoidal movable block can be pressed against the outside of the tower foot nail. This prevents the collar from easily slipping after being fitted onto the outside of the tower foot nail. When the user presses the two sets of manual levers, the strip plate drives the sliding block to slide upward on the sliding rod. At this time, the push block on the mounting plate, in conjunction with the limit stop, pushes the trapezoidal movable block to rotate and open around its hinge axis with the U-shaped frame. This prevents the top of the trapezoidal movable block from pressing against the outside of the tower foot nail. When the annular connector is subjected to a large downward force and descends to the lowest position, the wedge on the mounting plate presses tightly against the bottom of the inner side of the T-shaped plate, forcing the top of the trapezoidal movable block to press tightly against the outside of the tower foot nail, ensuring the stability of the entire safety protection device connected to the tower foot nail.

[0016] Furthermore, limit sliders are symmetrically installed at the middle positions of both ends of the strip plate, and limit grooves adapted to the limit sliders are symmetrically opened at the middle positions of both ends of the square through groove.

[0017] With the above technical solution, during the lifting and lowering process of the sliding block inside the mounting groove, the strip plate also slides in the square through groove, while the limiting slider slides in the limiting groove, which helps to improve the stability of the strip plate and the sliding block during the lifting and lowering process.

[0018] Furthermore, the top of the outer side of the fixing post is provided with an installation thread, and a limit nut is provided at the top of the outer side of the fixing post through the installation thread.

[0019] Using the above technical solution, the semi-circular frame and torsion spring can be removed from the fixed column after the limit nut is unscrewed with a tool.

[0020] Furthermore, connecting bearings are symmetrically installed at the bottom of both ends of the two sets of strip-shaped through holes, and the two ends of the outer side of the rotating shaft are fixedly connected to the inner rings of the two sets of connecting bearings on the same side.

[0021] Through the above technical solution, when the manual lever drives the rotating shaft and the incomplete gear to rotate, the connecting bearing helps to improve the stability of the rotation of the incomplete gear and the manual lever.

[0022] Furthermore, a rubber protective sleeve is provided on the outer side of the manual lever, and a groove that cooperates with the manual lever is provided at the middle position of the outer side of the movable frame.

[0023] The above technical solution effectively improves the user's comfort when pressing the manual lever. When the manual lever is rotated to the vertical position, the top of the outer side of the manual lever rests against the groove on the outer side of the moving frame, improving the stability of the manual lever's force on the moving frame. At this time, the rubber protective sleeve can also protect the manual lever and the moving frame, reducing collision damage between them.

[0024] The beneficial effects of the present invention are as follows: (1) Through the cooperation of the connecting mechanism and the clamping mechanism, the present invention can prevent the collar from slipping on the tower foot nail due to shaking after it is put on the tower foot nail, thereby effectively improving the stability of the collar after it is put on the tower foot nail; (2) The present invention can make the mounting body stably connected to the tower foot nail through the fastening mechanism, and with the cooperation of the connecting mechanism and the clamping mechanism, it can further prevent the collar from slipping after it is put on the tower foot nail, thereby fully improving the stability of the connection between the entire safety protection device and the tower foot nail; (3) The present invention, through the connection mechanism and the clamping mechanism, can prevent the collar from slipping on the tower foot nail, thereby fully improving the stability of the connection between the entire safety protection device and the tower foot nail; The coordination of the driving mechanism and the limiting mechanism allows the safety belt connected to the ring connector to exert a downward force on the ring connector. This effectively limits the semi-circular frame, ensuring that the two pairs of semi-circular frames are stably arranged into two sets of rings and securely fitted onto the tower foot spikes. The addition of the collar further enhances the stability of the connection between the entire safety protection device and the tower foot spikes. Simultaneously, the coordination of the connecting mechanism and the fastening mechanism allows the trapezoidal movable block to press firmly against the bottom of the outer side of the tower foot spikes, thus providing effective safety protection for power workers climbing the tower. Attached Figure Description

[0025] Figure 1 This is a first-view structural diagram of the present invention in use;

[0026] Figure 2 This is a second-view structural diagram of the present invention in use;

[0027] Figure 3 This is a first-view structural diagram of the cooperation between the driving mechanism and the limiting mechanism of the present invention;

[0028] Figure 4 This is a second-view structural diagram of the cooperation between the driving mechanism and the limiting mechanism of the present invention;

[0029] Figure 5 This is a three-dimensional schematic diagram of the invention when it is not in use;

[0030] Figure 6 This is a longitudinal cross-sectional schematic diagram of the present invention;

[0031] Figure 7 This is a three-dimensional schematic diagram of the connecting mechanism of the present invention under stress;

[0032] Figure 8 This is a first-view structural diagram of the cooperation between the driving mechanism and the connecting mechanism of the present invention;

[0033] Figure 9 This is a second-view structural diagram of the cooperation between the driving mechanism and the connecting mechanism of the present invention;

[0034] Figure 10 This is a three-dimensional schematic diagram of the clamping mechanism of the present invention;

[0035] Figure 11 This is a split schematic diagram of the clamping mechanism of the present invention;

[0036] Figure 12 This is a first-view structural diagram of the connection between the sliding block and the strip plate of the present invention;

[0037] Figure 13 This is a second-view structural diagram of the connection between the sliding block and the strip plate of the present invention;

[0038] Figure 14 This is a three-dimensional schematic diagram of the limiting mechanism of the present invention;

[0039] Figure 15 This is a first-view structural diagram of the fastening mechanism of the present invention;

[0040] Figure 16 This is a second-view structural diagram of the fastening mechanism of the present invention.

[0041] Reference numerals: 1. Tower foot spike; 2. Collar; 3. Mounting body; 4. Mounting groove; 5. Connecting mechanism; 501. Sliding rod; 502. Sliding block; 503. Strip plate; 504. First return spring; 505. Annular connector; 506. Limiting slider; 507. Limiting groove; 508. Square through groove; 6. Clamping mechanism; 601. Fixed column; 602. Semi-circular frame; 603. Push-pull rod; 604. Torsion spring; 605. Arc-shaped anti-slip strip; 606. Limiting nut; 7. Drive mechanism; 7 01. Strip-shaped through hole; 702. Rotating shaft; 703. Incomplete gear; 704. Manual lever; 705. Rack; 8. Limiting mechanism; 801. Sliding column; 802. Moving frame; 803. Anti-detachment block; 804. Spring groove; 805. Second return spring; 806. Arc groove; 9. Fastening mechanism; 901. U-shaped frame; 902. Trapezoidal movable block; 903. T-shaped plate; 904. Connecting tension spring; 905. Limiting stop block; 906. Mounting plate; 907. Wedge block; 908. Push block. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0043] like Figures 1-9 and Figures 12-13As shown, this embodiment of a power tower climbing safety protection device includes a mounting body 3 as a mounting carrier. A collar 2 is installed at the top of the mounting body 3 and is fitted onto the outside of the tower foot nail 1. A mounting groove 4 is provided in the middle of the mounting body 3. A connecting mechanism 5 is provided inside the mounting groove 4. The connecting mechanism 5 includes four sets of sliding rods 501 located inside the mounting groove 4. A sliding block 502 is fitted on the outside of the four sets of sliding rods 501. A strip plate 503 is installed at the middle of the bottom end of the sliding block 502. A square through groove 508 is provided at the bottom of the mounting groove 4. The bottom end of the strip plate 503 passes through the square through groove 508 and is fitted with an annular connector 505. A first return spring 504 is fitted on the outside of the sliding rod 501, and the top and bottom ends of the first return spring 504 are respectively connected to the sliding block 501. 2 is fixedly connected to the inner bottom of the mounting groove 4. Limiting sliders 506 are symmetrically installed at the middle positions of both ends of the strip plate 503. Limiting grooves 507 adapted to the limiting sliders 506 are symmetrically opened at the middle positions of both ends of the square through groove 508. First, the collar 2 at the top of the mounting body 3 is put on the outside of the tower foot nail 1 on the power tower. Then, the safety belt on the power worker is connected to the ring connector 505. When the ring connector 505 is subjected to a large downward force, the ring connector 505 pulls the sliding block 502 to slide downward on the sliding rod 501 through the strip plate 503. The first return spring 504 is shortened by force and stores elastic potential energy, which buffers the downward force on the ring connector 505, thereby improving the tensile strength of the entire safety protection device when subjected to downward force.

[0044] like Figures 1-5 and Figures 10-11As shown, in this embodiment, clamping mechanisms 6 that cooperate with connecting mechanisms 5 are symmetrically arranged at the top of both ends of the mounting body 3. The clamping mechanisms 6 include fixing posts 601, with two sets of fixing posts 601 symmetrically distributed at the middle position of the top of both ends of the mounting body 3. Two sets of cooperating semi-circular frames 602 are sleeved on the outer side of the fixing posts 601. A torsion spring 604 is sleeved at the middle position of the outer side of the fixing posts 601, and both ends of the torsion spring 604 are fixedly connected to the two sets of semi-circular frames 602 respectively. Push-pull rods 603 that cooperate with sliding blocks 502 are installed at the bottom of both sets of semi-circular frames 602. The top of the outer side of the column 601 is provided with an installation thread. The top of the outer side of the fixed column 601 is provided with a limit nut 606 through the installation thread. When the sliding block 502 moves upward, it pushes the two sets of push-pull rods 603 away from each other, so that the two sets of semi-circular frames 602 can rotate and open around the fixed column 601. The torsion spring 604 is subjected to force and stores torque. After the sliding block 502 no longer applies force to the two sets of push-pull rods 603, the torque of the torsion spring 604 forces the two sets of semi-circular frames 602 to rotate around the fixed column 601 to form a complete ring and fit onto the tower foot nail 1, ensuring the stability of the collar 2 after it is fitted onto the tower foot nail 1.

[0045] like Figures 1-9 and Figures 12-14As shown, in this embodiment, the mounting body 3 has symmetrically arranged drive mechanisms 7 that cooperate with the connecting mechanism 5 on both sides, and the collar 2 has symmetrically arranged limiting mechanisms 8 that cooperate with the drive mechanisms 7 on both sides. The drive mechanism 7 includes racks 705 located on both sides of the strip plate 503. The mounting body 3 has symmetrically opened strip-shaped through holes 701 communicating with the inside of the mounting groove 4 on both sides. A rotating shaft 702 is provided at the bottom of the strip-shaped through hole 701, and an incomplete gear 703 that meshes with the rack 705 is installed on the outside of the rotating shaft 702. A manual lever 704 is installed on the outside of the incomplete gear 703. Connecting bearings are symmetrically installed at the bottom of both ends of the two sets of strip-shaped through holes 701. The two ends of the collar 2 are fixedly connected to the inner rings of two sets of connecting bearings on the same side. The limiting mechanism 8 includes two sets of movable frames 802 located on both sides of the collar 2. Spring grooves 804 are symmetrically opened at both ends of the inner side of the movable frame 802. Two sets of sliding columns 801 are symmetrically installed on both sides of the collar 2. One end of the two sets of sliding columns 801 on the same side passes through the spring groove 804 and is equipped with an anti-detachment block 803. A second return spring 805 is sleeved on the outer side of the sliding column 801. The two ends of the second return spring 805 are fixedly connected to the collar 2 and one end inside the spring groove 804, respectively. Arc-shaped grooves 806 that cooperate with the semi-circular frame 602 are symmetrically opened at both ends of the inner side of the movable frame 802. A rubber sleeve is sleeved on the outer side of the manual lever 704. The protective sleeve has a groove at the middle of the outer side of the movable frame 802 that mates with the manual lever 704. Holding the outside of the mounting body 3, pressing the two sets of manual levers 704 causes the strip plate 503 to move slightly upwards along with the sliding block 502, driven by the incomplete gear 703 and rack 705. During this process, the sliding block 502 pushes the push-pull rod 603, causing the semi-circular frame 602 to rotate around the fixed column 601, unfolding the two pairs of semi-circular frames 602. Releasing the pressure on the manual levers 704 allows the torque of the torsion spring 604 to reassemble the two sets of semi-circular frames 602 into a ring, fixed to the outside of the tower foot spike 1. Meanwhile, the annular connector 505 is subjected to downward... When the force is applied, the transmission of the incomplete gear 703 and rack 705 drives the two sets of manual levers 704 to rotate upward around the rotating shaft 702 until the bottom ends of the two sets of manual levers 704 are tightly pressed against the outside of the moving frame 802 and push the moving frame 802 to slide on the sliding column 801. This allows the arc-shaped groove 806 to press tightly against the outside of the semi-circular frame 602, so that the two sets of semi-circular frames 602 can stably form a ring without separating. At this time, the second return spring 805 is shortened by force and stores elastic potential energy. When the manual lever 704 is no longer in contact with the moving frame 802, the elastic potential energy of the second return spring 805 can make the arc-shaped groove 806 no longer press against the outside of the semi-circular frame 602.

[0046] like Figures 1-5 , Figures 12-13 and Figures 15-16As shown, in this embodiment, a fastening mechanism 9 cooperating with the connecting mechanism 5 is installed at one end of the mounting body 3. The fastening mechanism 9 includes a U-shaped frame 901 located at the top of one end of the mounting body 3. A trapezoidal movable block 902 cooperating with the tower foot nail 1 is hinged at the middle position of the bottom of the U-shaped frame 901. A T-shaped plate 903 is installed on the outer side of the trapezoidal movable block 902. Two sets of connecting tension springs 904 fixedly connected to the outer side of the mounting body 3 are installed at the top of the inner side of the T-shaped plate 903. Limiting blocks 905 are symmetrically installed at the bottom ends of both sides of the T-shaped plate 903. A mounting plate 906 is installed at the end of the sliding block 502 near the U-shaped frame 901. A wedge block 907 cooperating with the T-shaped plate 903 is installed at the top of the outer side of the mounting plate 906. Pushing blocks 908 cooperating with the limiting blocks 905 are symmetrically installed at the bottom of the outer side of the mounting plate 906. The tension of spring 904, in conjunction with T-shaped plate 903, allows the top of trapezoidal movable block 902 to abut against the outside of tower foot nail 1, thus preventing the collar 2 from easily slipping after being fitted onto the outside of tower foot nail 1. When the user presses the two sets of manual levers 704, strip plate 503 drives sliding block 502 to slide upward on sliding rod 501. At this time, push block 908 on mounting plate 906, in conjunction with limit stop block 905, pushes trapezoidal movable block 902 to rotate and open around the hinge axis that is hinged to U-shaped frame 901, thus preventing the top of trapezoidal movable block 902 from abutting against the outside of tower foot nail 1. When the annular connector 505 is subjected to a large downward force and descends to the lowest position, wedge block 907 on mounting plate 906 presses tightly against the bottom of the inner side of T-shaped plate 903, forcing the top of trapezoidal movable block 902 to press tightly against the outside of tower foot nail 1.

[0047] The working principle of this embodiment is as follows: First, the safety belt on the power worker is connected to the ring connector 505. Then, the power worker holds the outside of the mounting body 3 with one hand and presses the two sets of manual levers 704, forcing the strip plate 503 to drive the sliding block 502 to rise slightly inside the mounting groove 4. During the process, the top of the sliding block 502 abuts against the two pairs of push-pull rods 603 and pushes the push-pull rods 603 to drive the semi-circular frame 602 to rotate around the fixed column 601. At this time, both pairs of semi-circular frames 602 are unfolded, and the push block 908, in conjunction with the limit stop block 905, pushes the T-shaped plate 903 to rotate downward and open with its hinge axis with the U-shaped frame 901 as the axis. Then, the collar 2 at the top of the mounting body 3 is put on the outside of the tower foot nail 1 on the power tower. Then, the pressure on the manual lever 704 is released, so that both pairs of semi-circular frames 602 are clamped on the outside of the tower foot nail 1, and the top of the trapezoidal movable block 902 abuts against the bottom of the tower foot nail 1.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. A safety protection device for climbing power transmission towers, comprising a mounting body (3) as a mounting carrier, characterized in that: The top of the mounting body (3) is fitted with a collar (2), and the collar (2) is fitted on the outside of the tower foot nail (1). The mounting body (3) has a mounting groove (4) in the middle position. The mounting groove (4) is equipped with a connecting mechanism (5). The top of both ends of the mounting body (3) are symmetrically equipped with clamping mechanisms (6) that cooperate with the connecting mechanism (5). The sides of the mounting body (3) are symmetrically equipped with driving mechanisms (7) that cooperate with the connecting mechanism (5). The sides of the collar (2) are symmetrically equipped with limiting mechanisms (8) that cooperate with the driving mechanism (7). One end of the mounting body (3) is equipped with a fastening mechanism (9) that cooperates with the connecting mechanism (5). The connecting mechanism (5) includes four sets of sliding rods (501) located inside the mounting groove (4). A sliding block (502) is sleeved on the outer side of the four sets of sliding rods (501). A strip plate (503) is installed at the middle position of the bottom end of the sliding block (502). A square through groove (508) is opened in the inner bottom of the mounting groove (4). The bottom end of the strip plate (503) passes through the square through groove (508) and is installed with an annular connector (505). A first return spring (504) is sleeved on the outer side of the sliding rod (501). The top and bottom ends of the first return spring (504) are fixedly connected to the sliding block (502) and the inner bottom of the mounting groove (4), respectively. The clamping mechanism (6) includes a fixed column (601), and two sets of fixed columns (601) are provided. The two sets of fixed columns (601) are symmetrically distributed at the middle position of the top of both ends of the mounting body (3). Two sets of semi-circular frames (602) that cooperate with each other are sleeved on the outside of the fixed column (601). A torsion spring (604) is sleeved at the middle position of the outside of the fixed column (601). The two ends of the torsion spring (604) are fixedly connected to the two sets of semi-circular frames (602) respectively. The bottom of the two sets of semi-circular frames (602) is equipped with a push-pull rod (603) that cooperates with the sliding block (502). The drive mechanism (7) includes racks (705) located on both sides of the strip plate (503). The mounting body (3) has symmetrical strip-shaped through holes (701) communicating with the inside of the mounting groove (4) on both sides. A rotating shaft (702) is provided at the bottom of the strip-shaped through hole (701), and an incomplete gear (703) that meshes with the rack (705) is installed on the outside of the rotating shaft (702). A manual lever (704) is installed on the outside of the incomplete gear (703). The limiting mechanism (8) includes two sets of movable frames (802) located on both sides of the collar (2). Spring grooves (804) are symmetrically opened at both ends of the inner side of the movable frame (802). Two sets of sliding columns (801) are symmetrically installed on both sides of the collar (2). One end of the two sets of sliding columns (801) on the same side passes through the spring groove (804) and is equipped with an anti-detachment block (803). A second return spring (805) is sleeved on the outer side of the sliding column (801). The two ends of the second return spring (805) are fixedly connected to one end of the collar (2) and the inside of the spring groove (804), respectively. Arc grooves (806) that cooperate with the semi-circular frame (602) are symmetrically opened at both ends of the inner side of the movable frame (802). The fastening mechanism (9) includes a U-shaped frame (901) located at the top of one end of the mounting body (3). A trapezoidal movable block (902) that cooperates with the tower foot nail (1) is hinged at the middle position of the bottom of the U-shaped frame (901). A T-shaped plate (903) is installed on the outside of the trapezoidal movable block (902). Two sets of connecting tension springs (904) that are fixedly connected to the outside of the mounting body (3) are installed on the top of the inner side of the T-shaped plate (903). Limiting blocks (905) are symmetrically installed on the bottom ends of both sides of the T-shaped plate (903). A mounting plate (906) is installed on the end of the sliding block (502) near the U-shaped frame (901). A wedge block (907) that cooperates with the T-shaped plate (903) is installed on the top of the outer side of the mounting plate (906). A pushing block (908) that cooperates with the limiting block (905) is symmetrically installed on the bottom of the outer side of the mounting plate (906).

2. The safety protection device for climbing power transmission towers according to claim 1, characterized in that, Limiting sliders (506) are symmetrically installed at the middle positions of both ends of the strip plate (503), and limiting grooves (507) adapted to the limiting sliders (506) are symmetrically opened at the middle positions of both ends of the square through groove (508).

3. The safety protection device for climbing power transmission towers according to claim 1, characterized in that, The top of the outer side of the fixing post (601) is provided with an installation thread, and a limit nut (606) is provided on the top of the outer side of the fixing post (601) through the installation thread.

4. The safety protection device for climbing power transmission towers according to claim 1, characterized in that, Connecting bearings are symmetrically installed at the bottom of both ends of the two sets of strip-shaped through holes (701), and the two ends of the outer side of the rotating shaft (702) are fixedly connected to the inner rings of the two sets of connecting bearings on the same side.

5. The safety protection device for climbing power transmission towers according to claim 1, characterized in that, The manual lever (704) is covered with a rubber protective sleeve on its outer side, and a groove that cooperates with the manual lever (704) is provided at the middle position of the outer side of the movable frame (802).

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