A safety protection device for power transmission tower maintenance

Abstract

This invention relates to the field of power construction technology, specifically to a safety protection device for the maintenance of transmission towers. It includes: a fixed plate; a lifting ring, the outer wall of which is fixedly connected to the outer wall of the fixed plate; an adjusting mechanism, the outer wall of which is slidably connected to the inner wall of the fixed plate; and a supporting mechanism, the outer wall of which is rotatably connected to the inner wall of the adjusting mechanism. This invention, by setting up a supporting mechanism, allows a first and second supporting plate to rotate and unfold on a sliding plate. A push rod enters a limiting cylinder on the inner wall of the second supporting plate, firmly locking the locking pin within the limiting cylinder and preventing it from moving. This connects the first and second supporting plates, and provides support through the push rod and supporting pipe. This allows workers to perform maintenance by standing or sitting on the first and second supporting plates, facilitating rapid maintenance.

Description

Technical Field

[0001] This invention relates to the field of power construction technology, specifically to a safety protection device for the maintenance of transmission towers. Background Technology

[0002] Transmission towers are the support points for overhead lines. A transmission tower with one circuit is a single-circuit transmission tower, while a transmission tower with two circuits is a double-circuit transmission tower. A single circuit means that one load has one power supply circuit; a double circuit means that one load has two power supply circuits.

[0003] However, in current technology, power maintenance workers often manually climb to the top of transmission towers during maintenance. To ensure safety and ease of operation, they are secured to the tower with a safety rope they carry. However, transmission towers are mostly constructed of multiple poles, and the support surface for workers is relatively small. They often need to use one hand to support the tower while performing maintenance work with one hand, which is very inconvenient. Furthermore, standing on the horizontal poles of the transmission tower is very unstable and poses a low level of safety. Summary of the Invention

[0004] To address the shortcomings of existing technologies, the technical solution adopted by this invention is as follows: a safety protection device for transmission tower maintenance, comprising: a fixed plate; a lifting ring, the outer wall of which is fixedly connected to the outer wall of the fixed plate; an adjusting mechanism, the outer wall of which is slidably connected to the inner wall of the fixed plate; a supporting mechanism, the outer wall of which is rotatably connected to the inner wall of the adjusting mechanism; a fixing mechanism, the outer wall of which is fixedly connected to the top end of the fixed plate; the adjusting mechanism includes a sliding plate, a supporting block fixedly connected to the bottom end of the sliding plate, a limit rod slidably connected to the inner wall of the top end of the sliding plate, a toggle plate fixedly connected to the outer wall of the limit rod, a pull spring fixedly connected to the outer wall of the toggle plate, a rotating rod rotatably connected to the inner wall of the end of the limit rod away from the toggle plate, and a locking block fixedly connected to the outer wall of the rotating rod.

[0005] The invention is further configured such that the outer wall of the sliding plate is slidably connected to the inner wall of the fixed plate, positioning holes are provided at both ends of the inner wall of the fixed plate, the outer wall of the actuating plate is slidably connected to the inner wall of the sliding plate, the outer wall of the limiting rod is slidably connected to the inner wall of the positioning hole, and the outer wall of the locking block is slidably connected to the outer wall of the fixed plate. The sliding plate can move within the fixed plate for height adjustment. When the height is adjusted to the appropriate position, the limiting rod is moved by the actuating plate until it passes through the positioning hole. Then, the locking block is rotated so that it crosses the limiting rod. When the actuating plate is released, the locking block is pulled back into the positioning hole by the pull spring, preventing the limiting rod from moving and thus preventing the sliding plate from sliding on the fixed plate.

[0006] The invention is further configured such that the support mechanism includes a first support plate, a handle rotatably connected to the outer wall of the first support plate, a second support plate rotatably connected to the end of the handle away from the first support plate, sliding blocks symmetrically slidably connected to the inner wall of the first support plate, a return spring fixedly connected to the outer wall of the sliding block, a push rod rotatably connected to the outer wall of the sliding block, and a locking pin fixedly connected to the outer wall of the push rod. When the two fixed plates are pulled outwards away from each other, the first and second support plates rotate and unfold on the sliding plate respectively through the support mechanism until they contact the bottom support block, so that the first and second support plates are fully unfolded and horizontal.

[0007] The invention is further configured such that the end of the return spring away from the sliding block is fixedly connected to the inner wall of the first support plate, and a limiting cylinder is fixedly connected to the inner wall of the second support plate. A curved groove is formed in the wall of the limiting cylinder. The outer wall of the push rod is slidably connected to the inner wall of the limiting cylinder, and the outer wall of the locking pin is slidably connected to the inner wall of the curved groove. The outer walls of the first and second support plates are rotatably connected to the inner wall of the sliding plate, and the outer walls of the first and second support plates are slidably connected to the outer wall of the support block. The sliding block slides on the inner wall of the first support plate, causing the push rod and locking pin to enter the limiting cylinder on the inner wall of the second support plate. When the push rod cannot move, the push rod is rotated, causing the locking pin to slide within the curved groove. The sliding block is then released, and under the action of the return spring, the push rod is pulled to return to its original position, thus firmly locking the locking pin within the limiting cylinder and preventing it from moving.

[0008] The invention is further configured such that the fixing mechanism includes a fixing hook, a push plate slidably connected to the inner wall of the fixing hook, a slide rod fixedly connected to the top of the push plate, a push spring fixedly connected to the top of the push plate, an L-shaped rod fixedly connected to the bottom of the push plate, and a limit block fixedly connected to the outer wall of the fixing hook. The invention is further configured such that the outer wall of the fixing hook is fixedly connected to the outer wall of the fixing plate, the outer wall of the slide rod is slidably connected to the inner wall of the fixing hook, and the end of the push spring away from the push plate is fixedly connected to the inner wall of the fixing hook. When the fixing hooks on the two fixing plates are hung on the crossbar of the transmission tower, under the action of gravity, the displacement rod slides on the inner wall of the fixing hook, driving the L-shaped rod to move upward, thereby forming a closed loop with the fixing hook and the L-shaped rod, and fixing it to the crossbar.

[0009] The present invention is further configured such that a toggle rod is rotatably connected to the outer wall of the L-shaped rod, a displacement rod is slidably connected to the top end of the toggle rod, a displacement spring is fixedly connected to the outer wall of the displacement rod, the end of the displacement spring away from the displacement rod is fixedly connected to the outer wall of the toggle rod, and the outer wall of the displacement rod is slidably connected to the outer wall of the limiting block.

[0010] The beneficial effects of this invention are as follows: 1. This invention uses a fixing mechanism to attach a fixing hook to the crossbar of a transmission tower. Under the action of gravity, the displacement rod slides on the inner wall of the fixing hook, causing the L-shaped rod to move upward. This forms a closed loop between the fixing hook and the L-shaped rod, fixing them to the crossbar. The displacement rod is then engaged in a limiting block, further securing the fixing hook and the L-shaped rod. The operation is simple and allows for quick and easy connection of the entire device to the transmission tower.

[0011] 2. By setting up a support mechanism, the first support plate and the second support plate rotate and unfold on the sliding plate respectively. The push rod enters the limiting cylinder on the inner wall of the second support plate, so that the locking pin is firmly locked in the limiting cylinder and cannot move. Thus, the first support plate and the second support plate are connected and supported by the push rod and the support tube. This allows the staff to perform maintenance by standing or sitting on the first support plate and the second support plate, which facilitates quick maintenance.

[0012] 3. This invention, by setting an adjustment mechanism, allows the sliding plate to move within the fixed plate, thereby driving the support mechanism to adjust its height. Once adjusted to the appropriate position, the limiting rod is passed through the positioning hole by a toggle plate. Then, the locking block is rotated, and under the pull of the spring, the locking block is locked back into the positioning hole, preventing the limiting rod from moving. This prevents the sliding plate from sliding on the fixed plate, thus completing the height adjustment. This facilitates adjustment by workers when inspecting different height positions. Attached Figure Description

[0013] Figure 1 This is the front view of the present invention; Figure 2 This is a cross-sectional view of the present invention; Figure 3 This is a schematic diagram of the adjustment mechanism of the present invention; Figure 4 This is a schematic diagram of the rotating rod of the present invention; Figure 5 This is a schematic diagram of the support mechanism of the present invention; Figure 6 This is the present invention. Figure 5 Enlarged view of the structure at point A; Figure 7 This is a schematic diagram of the fixing mechanism of the present invention; Figure 8 This is the present invention. Figure 7 Enlarged view of the structure at point B.

[0014] In the diagram: 1. Fixed plate; 2. Adjusting mechanism; 21. Sliding plate; 22. Support block; 23. Limiting rod; 24. Pulling spring; 25. Locking block; 26. Actuating plate; 27. Rotating rod; 3. Supporting mechanism; 31. First support plate; 32. Second support plate; 33. Rotating handle; 34. Return spring; 35. Sliding block; 36. Push rod; 37. Locking post; 38. Limiting cylinder; 39. Curved groove; 4. Fixed mechanism; 41. Fixed hook; 42. Sliding rod; 43. Pushing spring; 44. L-shaped rod; 45. Limiting block; 46. Actuating rod; 47. Displacement spring; 48. Displacement rod; 49. Push plate; 5. Lifting ring; 6. Positioning hole. Detailed Implementation

[0015] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments. The embodiments of the present invention are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the invention to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described to better illustrate the principles and practical application of the invention, and to enable those skilled in the art to understand the invention and design various embodiments with various modifications suitable for a particular purpose.

[0016] Example: Please see Figure 1 - Figure 8 This invention provides a technical solution: a safety protection device for the maintenance of transmission towers, comprising: a fixed plate 1; a lifting ring 5, the outer wall of which is fixedly connected to the outer wall of the fixed plate 1; an adjusting mechanism 2, the outer wall of which is slidably connected to the inner wall of the fixed plate 1; a supporting mechanism 3, the outer wall of which is rotatably connected to the inner wall of the adjusting mechanism 2; a fixing mechanism 4, the outer wall of which is fixedly connected to the top end of the fixed plate 1; the adjusting mechanism 2 includes a sliding plate 21, a supporting block 22 fixedly connected to the bottom end of the sliding plate 21, a limiting rod 23 slidably connected to the inner wall of the top end of the sliding plate 21, a toggle plate 26 fixedly connected to the outer wall of the limiting rod 23, a pulling spring 24 fixedly connected to the outer wall of the toggle plate 26, a rotating rod 27 rotatably connected to the inner wall of the end of the limiting rod 23 away from the toggle plate 26, and a locking block 25 fixedly connected to the outer wall of the rotating rod 27.

[0017] The outer wall of the sliding plate 21 is slidably connected to the inner wall of the fixed plate 1. Positioning holes 6 are provided at both ends of the inner wall of the fixed plate 1. The outer wall of the actuating plate 26 is slidably connected to the inner wall of the sliding plate 21. The outer wall of the limiting rod 23 is slidably connected to the inner wall of the positioning hole 6. The outer wall of the locking block 25 is slidably connected to the outer wall of the fixed plate 1. The sliding plate 21 can move within the inner wall of the fixed plate 1, driving the support mechanism 3 to adjust its height. When the height is adjusted to the appropriate level, the actuating plate 26 moves the fixedly connected limiting rod 23 until it passes through the positioning hole 6. Then, the locking block 25 is rotated so that it intersects with the limiting rod 23. Under the pull of the pulling spring 24, the locking block 25 is locked back into the positioning hole 6, preventing the limiting rod 23 from moving.

[0018] The support mechanism 3 includes a first support plate 31, with a handle 33 rotatably connected to the outer wall of the first support plate 31. A second support plate 32 is rotatably connected to the end of the handle 33 away from the first support plate 31. Sliding blocks 35 are symmetrically slidably connected to the inner wall of the first support plate 31. A return spring 34 is fixedly connected to the outer wall of the sliding block 35. A push rod 36 is rotatably connected to the outer wall of the sliding block 35. A locking pin 37 is fixedly connected to the outer wall of the push rod 36. When the two fixed plates 1 are moved away from each other, the first support plate 31 and the second support plate 32 rotate and unfold on the inner wall of the sliding plate 21 through the support mechanism 3 until they contact the outer wall of the bottom support block 22, so that the first support plate 31 and the second support plate 32 are fully unfolded and reach a horizontal position.

[0019] The end of the return spring 34 away from the sliding block 35 is fixedly connected to the inner wall of the first support plate 31. The inner wall of the second support plate 32 is fixedly connected to the limiting cylinder 38, and a curved groove 39 is formed in the wall of the limiting cylinder 38. The outer wall of the push rod 36 is slidably connected to the inner wall of the limiting cylinder 38, and the outer wall of the locking post 37 is slidably connected to the inner wall of the curved groove 39. The outer walls of the first support plate 31 and the second support plate 32 are rotatably connected to the inner wall of the sliding plate 21, and the outer walls of the first support plate 31 and the second support plate 32 are slidably connected to the outer wall of the support block 22.

[0020] The fixing mechanism 4 includes a fixing hook 41, a push plate 49 slidably connected to the inner wall of the fixing hook 41, a slide rod 42 fixedly connected to the top of the push plate 49, a push spring 43 fixedly connected to the top of the push plate 49, and an L-shaped rod 44 fixedly connected to the bottom of the push plate 49. A limit block 45 is fixedly connected to the outer wall of the fixing hook 41. The outer wall of the fixing hook 41 is fixedly connected to the outer wall of the fixing plate 1, the outer wall of the slide rod 42 is slidably connected to the inner wall of the fixing hook 41, and the end of the push spring 43 away from the push plate 49 is fixedly connected to the inner wall of the fixing hook 41. When the fixing hook 41 is hung on the crossbar of the transmission tower, under the action of gravity, the outer wall of the displacement rod 48 slides on the inner wall of the fixing hook 41, and drives the fixedly connected L-shaped rod 44 to move upward, thereby forming a closed loop with the fixing hook 41 and the L-shaped rod 44, which is fixed to the crossbar.

[0021] A toggle lever 46 is rotatably connected to the outer wall of the L-shaped rod 44. A displacement rod 48 is slidably connected to the top of the toggle lever 46. A displacement spring 47 is fixedly connected to the outer wall of the displacement rod 48. The end of the displacement spring 47 away from the displacement rod 48 is fixedly connected to the outer wall of the toggle lever 46. The outer wall of the displacement rod 48 is slidably connected to the outer wall of the limiting block 45. Rotating the toggle lever 46 until it is flush with the limiting block 45, the displacement rod 48 is pulled upward, causing it to slide on the outer wall of the toggle lever 46 until it enters the limiting block 45. Under the pull of the fixedly connected displacement spring 47, the displacement rod 48 has a downward force and is locked into the limiting block 45, thereby further fixing the fixing hook 41 and the L-shaped rod 44.

[0022] Working principle: In use, when workers carry this device to the required maintenance location on the transmission tower, they use the fixing mechanism 4 to hook the fixing hooks 41 on the two fixing plates 1 onto the crossbar of the transmission tower. Under the action of gravity, the displacement rod 48 slides on the inner wall of the fixing hook 41, driving the L-shaped rod 44 to move upward, thus forming a closed loop with the fixing hook 41 and the L-shaped rod 44, which is fixed to the crossbar. Then, the actuating rod 46 is rotated to a position flush with the limiting block 45. The displacement rod 48 is then pulled upward, causing it to slide on the actuating rod 46 until it enters the limiting block 45. The displacement rod 48 is then released, and the displacement spring... Pulling 47 causes the displacement rod 48 to have a downward force and engage with the limiting block 45, thereby further fixing the fixing hook 41 and the L-shaped rod 44, thus completing the fixing of the two fixing plates 1 and the crossbar. When the fixing plate 1 needs to be removed, disconnect the displacement rod 48 from the limiting block 45 and lift the fixing plate 1 upward. Without the action of gravity, push the spring 43 to push the push plate 49 to move. Under the limitation of the sliding rod 42, the push plate 49 moves downward inside the fixing hook 41, and causes the L-shaped rod 44 to move. At this time, the fixing hook 41 and the L-shaped rod 44 are no longer closed, and the fixing plate 1 can be removed from the crossbar of the transmission tower. After the two fixed plates 1 are fixed, they are pulled outwards to move them away from each other. At this time, through the support mechanism 3, the first support plate 31 and the second support plate 32 rotate and unfold on the sliding plate 21 until they contact the bottom support block 22, so that the first support plate 31 and the second support plate 32 are fully unfolded and reach a horizontal position. Under the connection of the rotating handle 33, the two fixed plates 1 cannot move. Then, the sliding block 35 is pushed to slide on the inner wall of the first support plate 31, which drives the push rod 36 to move, so that the push rod 36 and the locking pin 37 enter the limiting cylinder 38 on the inner wall of the second support plate 32, so that the locking pin... When push rod 36 cannot move, push rod 36 is rotated to make locking pin 37 slide in groove 39. Then slide block 35 is released and sliding block 35 is pulled under the action of return spring 34, giving push rod 36 the force to return and move, so that locking pin 37 is firmly locked in limit cylinder 38 and cannot move. Thus, the first support plate 31 and the second support plate 32 are connected and supported by push rod 36. At this time, workers can stand or sit on the first support plate 31 and the second support plate 32 for maintenance, and can also fix the safety rope to the lifting ring 5 to further protect the workers. When height adjustment is required, the adjusting mechanism 2 is used to rotate the locking block 25, causing it to rotate on the limiting rod 23 via the rotating rod 27 until it coincides with the limiting rod 23. At this point, without the blocking block 25 obstructing the movement, the pulling spring 24 pulls the limiting rod 23 to move back to its original position until it retracts into the sliding plate 21. The sliding plate 21 can then move within the fixed plate 1, driving the support mechanism 3 to adjust the height. Once the height is adjusted to the appropriate level, the limiting rod 23 is moved by the actuating plate 26 until it passes through the positioning hole 6. Then, the locking block 25 is rotated again so that it crosses the limiting rod 23. When the actuating plate 26 is released, the pulling spring 24 causes the locking block 25 to engage again in the positioning hole 6, preventing the limiting rod 23 from moving. Consequently, the sliding plate 21 cannot slide on the fixed plate 1, thus completing the height adjustment.

[0023] Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art and related fields based on the embodiments of the present invention without inventive effort should fall within the scope of protection of the present invention. Structures, devices, and operating methods not specifically described and explained in the present invention, unless otherwise specified or limited, shall be implemented according to conventional means in the art.

Claims

1. A safety protection device for the maintenance of a power transmission tower, characterized in that, include: Fixed plate (1); lifting ring (5), the outer wall of the lifting ring (5) is fixedly connected to the outer wall of the fixed plate (1); adjusting mechanism (2), the outer wall of the adjusting mechanism (2) is slidably connected to the inner wall of the fixed plate (1); supporting mechanism (3), the outer wall of the supporting mechanism (3) is rotatably connected to the inner wall of the adjusting mechanism (2); fixing mechanism (4), the outer wall of the fixing mechanism (4) is fixedly connected to the top of the fixed plate (1); the adjusting mechanism (2) includes a sliding plate (21), the bottom end of the sliding plate (21) is fixedly connected to a supporting block (22), the inner wall of the top of the sliding plate (21) is slidably connected to a limiting rod (23), the outer wall of the limiting rod (23) is fixedly connected to a toggle plate (26), the outer wall of the toggle plate (26) is fixedly connected to a pulling spring (24), the inner wall of the end of the limiting rod (23) away from the toggle plate (26) is rotatably connected to a rotating rod (27), the outer wall of the rotating rod (27) is fixedly connected to a locking block (25); The support mechanism (3) includes a first support plate (31), a handle (33) is rotatably connected to the outer wall of the first support plate (31), a second support plate (32) is rotatably connected to the end of the handle (33) away from the first support plate (31), a sliding block (35) is symmetrically slidably connected to the inner wall of the first support plate (31), a return spring (34) is fixedly connected to the outer wall of the sliding block (35), a push rod (36) is rotatably connected to the outer wall of the sliding block (35), and a locking pin (37) is fixedly connected to the outer wall of the push rod (36); the fixing mechanism (4) includes a fixing hook (41), a push plate (49) is slidably connected to the inner wall of the fixing hook (41), a slide rod (42) is fixedly connected to the top of the push plate (49), a push spring (43) is fixedly connected to the top of the push plate (49), an L-shaped rod (44) is fixedly connected to the bottom of the push plate (49), and a limit block (45) is fixedly connected to the outer wall of the fixing hook (41).

2. The safety protection device for the maintenance of a power transmission tower according to claim 1, characterized in that: The outer wall of the sliding plate (21) is slidably connected to the inner wall of the fixed plate (1). The inner walls of the fixed plate (1) are provided with positioning holes (6) at both ends. The outer wall of the actuating plate (26) is slidably connected to the inner wall of the sliding plate (21). The outer wall of the limiting rod (23) is slidably connected to the inner wall of the positioning hole (6). The outer wall of the locking block (25) is slidably connected to the outer wall of the fixed plate (1).

3. The safety protection device for the maintenance of a power transmission tower according to claim 1, characterized in that: The end of the reset spring (34) away from the sliding block (35) is fixedly connected to the inner wall of the first support plate (31). The inner wall of the second support plate (32) is fixedly connected to the limiting cylinder (38). A curved groove (39) is provided in the wall of the limiting cylinder (38). The outer wall of the push rod (36) is slidably connected to the inner wall of the limiting cylinder (38). The outer wall of the locking post (37) is slidably connected to the inner wall of the curved groove (39).

4. The safety protection device for the maintenance of a power transmission tower according to claim 3, characterized in that: The outer walls of the first support plate (31) and the second support plate (32) are rotatably connected to the inner wall of the sliding plate (21), and the outer walls of the first support plate (31) and the second support plate (32) are slidably connected to the outer wall of the support block (22).

5. The safety protection device for the maintenance of a power transmission tower according to claim 1, characterized in that: The outer wall of the fixed hook (41) is fixedly connected to the outer wall of the fixed plate (1), the outer wall of the slide rod (42) is slidably connected to the inner wall of the fixed hook (41), and the end of the push spring (43) away from the push plate (49) is fixedly connected to the inner wall of the fixed hook (41).

6. A safety protection device for transmission tower maintenance according to claim 1, characterized in that: The outer wall of the L-shaped rod (44) is rotatably connected to a toggle rod (46), the top end of the toggle rod (46) is slidably connected to a displacement rod (48), the outer wall of the displacement rod (48) is fixedly connected to a displacement spring (47), the end of the displacement spring (47) away from the displacement rod (48) is fixedly connected to the outer wall of the toggle rod (46), and the outer wall of the displacement rod (48) is slidably connected to the outer wall of the limiting block (45).

Images