Large-span steel truss hoisting limiter connecting structure

Abstract

The utility model relates to the technical field of large-span steel truss hoisting limiters, in particular to a large-span steel truss hoisting limiter connecting structure which comprises a shell and transverse plates, the transverse plates are symmetrically and fixedly connected to the outer wall of the shell, a limiting device is arranged on the inner wall of the shell, and an auxiliary limiting device is arranged on the outer wall of the shell. According to the large-span steel truss hoisting limiting stopper connecting structure, through cooperation of the auxiliary limiting device and the shell, the frame can push the lower side surface of one end of the pawl, so that the pawl does not make contact with the ratchet wheel any more, and the ratchet wheel does not make contact with the ratchet wheel any more; the large-span steel truss can be slowly put down, the large-span steel truss can be installed, the unfolding speed of the steel wire rope is reduced through friction force between the sliding plates and the top blocks on the two sides, when a fault occurs, the falling speed of the steel truss can be reduced, and the safety of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of large-span steel truss hoisting limiters, in particular to a large-span steel truss hoisting limiter connection structure. Background Art

[0002] Steel trusses refer to trusses made of steel. Roof structures of industrial and civil buildings, crane beams, bridges and hydraulic gates often use steel trusses as the main load-bearing components. Various towers, such as mast towers, TV towers and transmission line towers, often use spatial steel trusses composed of three-sided, four-sided or multi-sided plane trusses.

[0003] For example, the authorization announcement number is "CN220011845U", which is a large-span steel truss hoisting limiter connection structure. The air bag pushes the hoisting limiter body, and then adjusts the distance between the hoisting limiter bodies on the left and right sides. It does not need to be adjusted manually, which is convenient for operation and improves work efficiency. However, when the device is hoisting the steel truss, it is not convenient to control the deceleration when the steel truss is lowered. As a result, when the limiter fails when the device is lowering the steel truss, the steel truss hoisted by the device will fall quickly, which reduces the safety of the device. At the same time, the limiter of the device is not convenient for various adjustments, which makes the device inconvenient when hoisting the steel truss. Utility Model Content

[0004] The utility model aims to solve the problems of low safety and inconvenience in use of the device, and proposes a large-span steel truss hoisting limiter connection structure.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A large-span steel truss hoisting limiter connection structure is designed, including an outer shell and a cross plate, the outer wall of the outer shell is symmetrically fixedly connected with the cross plate, the inner wall of the outer shell is provided with a limit device, the outer wall of the outer shell is provided with an auxiliary limit device, one side of the cross plate on both sides is fixedly connected with a support rod, one end of the support rod on both sides is fixedly connected with a bottom plate, the inner wall of the outer shell is rotatably connected to the protruding parts of one end of two reels through bearings, one end of the reels on both sides are respectively fixedly connected to the two ends of the connecting rod, and the outer wall of the connecting rod is fixedly connected with a ratchet and a first gear.

[0007] Preferably, the auxiliary limiting device includes a box body and a first motor, the box body is fixedly connected to the outer wall of the shell, the outer wall of the output shaft of the first motor is rotatably connected to the protruding part of the box body through a bearing, the inner wall of the box body is fixedly connected to the first motor through a motor frame, one end of the output shaft of the first motor is fixedly connected to the first bevel gear, the first bevel gear is meshed with the second bevel gear, the second bevel gear is fixedly connected to the outer wall of the threaded rod, both ends of the threaded rod are rotatably connected to the inner wall of the box body through bearings, the threaded rod is threadedly connected to the threaded block, the outer wall of the threaded block is movably connected to one end of two rotating rods through a pin shaft, the other end of the rotating rods on both sides are movably connected to two slides through pin shafts, the protruding parts of the slides on both sides are slidably connected to the inner wall of the box body, and one end of the slides on both sides passes through the box body.

[0008] Preferably, the outer wall of the shell is symmetrically fixedly connected with a top block, one side of the top block on both sides is slidably connected to the steel wire rope, and one end of the steel wire rope on both sides is fixedly connected with a hook.

[0009] Preferably, one end of the steel wire ropes on both sides passes through the outer shell and is wound around the outer walls of the drums on both sides, the first gear is meshed with the second gear, the second gear is fixedly connected to the output shaft of the second motor, the output shaft of the second motor is rotatably connected to the support plate through a bearing, and one end of the support plate is fixedly connected to the inner wall of the outer shell.

[0010] Preferably, the limiting device includes a hydraulic cylinder and a frame, the hydraulic cylinder is fixedly connected to the inner wall of the outer shell, the telescopic end of the hydraulic cylinder is fixedly connected to the frame, the telescopic end of the hydraulic cylinder and the inside of the frame are respectively fixedly connected to the two ends of the inclined rod, the outer wall of the frame is slidingly connected to the through hole opened on the surface of the outer shell, the inner wall of the outer shell is symmetrically fixedly connected with circular plates, the circular plates on both sides are movably connected to the pawls through pins, and one end of the spring is fixedly connected to one side of the pawl.

[0011] Preferably, one end of the spring is fixedly connected to the inner wall of the housing, and one end of the pawl is engaged with the ratchet.

[0012] The utility model discloses a large-span steel truss lifting limiter connection structure, the beneficial effect is that: through the cooperation of the auxiliary limit device and the shell, when the large-span steel truss is lowered and installed, the output shaft of the first motor rotates to drive the first bevel gear to rotate, so that the threaded block can push the rotating rods on both sides to move synchronously, and the rotating rods on both sides can drive the slide plates on both sides to expand synchronously, so that one end of the slide plates on both sides cooperates with the top blocks on both sides respectively and presses tightly against the surfaces of the steel wire ropes on both sides. According to the above-mentioned reverse operation, the telescopic end of the hydraulic cylinder is extended, so that the frame can push the lower surface of one end of the ratchet claw, so that the ratchet claw no longer contacts with the ratchet wheel, and the output shaft of the second motor is started to rotate in the opposite direction, so that the steel wire ropes on both sides are expanded, so that the large-span steel truss can be slowly lowered, and the large-span steel truss can be installed. The expansion speed of the steel wire rope is slowed down by the friction between the slide plates and the top blocks on both sides. When a fault occurs, the falling speed of the steel truss can also be slowed down, thereby improving the safety of the device.

[0013] Through the cooperation of the limit device and the shell, the hooks on both sides are hung on the large-span steel truss, and the connecting rod can be driven to rotate synchronously while the ratchet can be driven to rotate synchronously. The ratchet can continuously push the pawl to move around the hinge with the circular plate, and the pawl can be returned to its original position under the push of the spring, so that the pawl can always be in contact with the ratchet to prevent the ratchet from reversing. When it rises to the specified height, the second motor is stopped, and the telescopic end of the hydraulic cylinder is shortened to drive the frame to move synchronously, so that the frame is pressed against the upper outer wall of the pawl, and the pawl is pressed against the ratchet, and the ratchet cannot rotate, so that the height position of the large-span steel truss is more stable. The ratchet and the pawl can be adjusted so that the device can be locked and rotated normally, making the device more convenient when hoisting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 for Figure 1 A front cross-sectional view of

[0016] Figure 3 is a top sectional view of the housing;

[0017] Figure 4 for Figure 1 A partial side sectional view of

[0018] Figure 5 for Figure 2 Schematic diagram of part A;

[0019] Figure 6 for Figure 4 Schematic diagram of part B.

[0020] In the figure: 1, housing, 2, auxiliary limiting device, 201, box, 202, first motor, 203, first bevel gear, 204, threaded rod, 205, second bevel gear, 206, threaded block, 207, rotating rod, 208, slide plate, 3, hook, 4, reel, 5, wire rope, 6, connecting rod, 7, ratchet, 8, first gear, 9, limiting device, 901, hydraulic cylinder, 902, frame, 903, pawl, 904, spring, 905, round plate, 906, oblique rod, 10, horizontal plate, 11, top block, 12, support rod, 13, bottom plate, 14, second motor, 15, support plate, 16, second gear. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings:

[0022] See attached Figure 1-6 : In the present embodiment, a large-span steel truss hoisting limiter connection structure comprises a shell 1 and a cross plate 10, the outer wall of the shell 1 is symmetrically fixedly connected with the cross plate 10, the inner wall of the shell 1 is provided with a limit device 9, the outer wall of the shell 1 is provided with an auxiliary limit device 2, one side of the cross plates 10 on both sides is fixedly connected with a support rod 12, one end of the support rods 12 on both sides is fixedly connected with a bottom plate 13, the inner wall of the shell 1 is rotatably connected with the protruding part of one end of the two drums 4 through a bearing, the drums 4 on both sides can reel in the wire rope 5, one end of the drums 4 on both sides are respectively fixedly connected to the two ends of the connecting rod 6, the outer wall of the connecting rod 6 is fixedly connected with a ratchet 7 and a first gear 8, and the connecting rod 6 can make the drums 4 on both sides rotate synchronously;

[0023] The outer wall of the shell 1 is symmetrically fixed with a top block 11, and one side of the top blocks 11 on both sides is slidably connected to the wire rope 5. The top blocks 11 on both sides can press the wire rope 5 together with the slide plate 208, so that the wire rope 5 can move more slowly. One end of the wire rope 5 on both sides is fixedly connected with a hook 3, and one end of the wire rope 5 on both sides passes through the shell 1 and is wound around the outer walls of the reels 4 on both sides. The first gear 8 is meshed with the second gear 16, and the second gear 16 is fixedly connected to the output shaft of the second motor 14. The second gear 16 can drive the first gear 8 to rotate synchronously, and the second gear 16 can be driven by the second motor 14 to rotate. The second motor 14 can meet the work needs according to actual needs. The output shaft of the second motor 14 is rotatably connected to the support plate 15 through a bearing, and one end of the support plate 15 is fixedly connected to the inner wall of the shell 1, and one end of the spring 904 is fixedly connected to the inner wall of the shell 1. One end of the pawl 903 is engaged with the ratchet 7, and the pawl 903 can limit the reverse rotation of the ratchet 7.

[0024] The auxiliary limiting device 2 includes a box body 201 and a first motor 202. The box body 201 is fixedly connected to the outer wall of the outer shell 1. The outer wall of the output shaft of the first motor 202 is rotatably connected to the protruding part of the box body 201 through a bearing. The inner wall of the box body 201 is fixedly connected to the first motor 202 through a motor frame. The first motor 202 can meet the working needs according to actual needs. The first motor 202 can drive the first bevel gear 203 to collect. One end of the output shaft of the first motor 202 is fixedly connected to the first bevel gear 203. The first bevel gear 203 is meshed with the second bevel gear 205. The first bevel gear 203 can drive the second bevel gear 205 to rotate.

[0025] The second bevel gear 205 is fixedly connected to the outer wall of the threaded rod 204, and both ends of the threaded rod 204 are rotatably connected to the inner wall of the box body 201 through bearings, fixing the rotation center of the threaded rod 204, and the threaded rod 204 is threadedly connected to the threaded block 206. The threaded rod 204 can drive the threaded block 206 to rise and fall, and the outer wall of the threaded block 206 is movably connected to one end of the two rotating rods 207 through a pin shaft, and the threaded block 206 can drive the rotating rods 207 on both sides to move synchronously, and the other ends of the rotating rods 207 on both sides are movably connected to the two slides 208 through the pin shaft, respectively, and the rotating rods 207 on both sides can drive the slides 208 on both sides to move synchronously, and the protruding parts of the slides 208 on both sides are slidably connected to the inner wall of the box body 201, fixing the movement tracks of the slides 208 on both sides, and one end of the slides 208 on both sides passes through the box body 201, and one end of the slides 208 on both sides is provided with rubber pads to increase the friction between the rubber pads and the wire rope 5.

[0026] The limiting device 9 includes a hydraulic cylinder 901 and a frame 902. The hydraulic cylinder 901 is fixedly connected to the inner wall of the shell 1. The telescopic end of the hydraulic cylinder 901 is fixedly connected to the frame 902. The hydraulic cylinder 901 can meet the working needs according to actual needs. The hydraulic cylinder 901 can drive the frame 902 to move, so that the height position of the frame 902 can be adjusted, so that the frame 902 can limit the position of the pawl 903. The telescopic end of the hydraulic cylinder 901 and the inside of the frame 902 are respectively fixedly connected to the two ends of the inclined rod 906. The outer wall of the frame 902 is slidably connected to the through hole opened on the surface of the shell 1. The inner wall of the shell 1 is symmetrically fixedly connected with circular plates 905. The circular plates 905 on both sides are movably connected to the pawl 903 through pins. One end of a spring 904 is fixedly connected to one side of the pawl 903. The elastic coefficient of the spring 904 can meet the working needs according to actual needs. The spring 904 can push the pawl 903 to reset.

[0027] Working principle:

[0028] When hoisting a large-span steel truss:

[0029] The limiter of the device is composed of a limit device 9 and a ratchet 7.

[0030] The hooks 3 on both sides are hung on the large-span steel truss, the external power supply of the second motor 14 is connected, the output shaft of the second motor 14 is started to rotate to drive the second gear 16 to rotate, and the second gear 16 can drive the first gear 8 to rotate, so that the first gear 8 can drive the connecting rod 6 to rotate synchronously, so that the connecting rod 6 can drive the drums 4 on both sides to rotate synchronously, so that the drums 4 on both sides can reel in the wire rope 5, and the wire ropes 5 on both sides can drive the hooks 3 on both sides to move upward, so that the hooks 3 on both sides can lift the large-span steel truss, and the large-span steel truss can be transported. When the connecting rod 6 rotates, it can drive the ratchet 7 The ratchet 7 can continuously push the pawl 903 to move around the hinge with the circular plate 905, and the pawl 903 can be returned to its original position under the push of the spring 904, so that the pawl 903 can always be in contact with the ratchet 7 to prevent the ratchet 7 from reversing. When it rises to the specified height, the second motor 14 is stopped, the external power supply of the hydraulic cylinder 901 is turned on, and the telescopic end of the hydraulic cylinder 901 is started to shorten and drive the frame 902 to move synchronously, so that the frame 902 is pressed against the upper outer wall of the pawl 903, and the pawl 903 is pressed against the ratchet 7, and the ratchet 7 cannot rotate, so that the height position of the large-span steel truss is more stable.

[0031] Descending process:

[0032] When the large-span steel truss is lowered for installation, the external power supply of the first motor 202 is connected, and the output shaft of the first motor 202 is started to rotate to drive the first bevel gear 203 to rotate. The first bevel gear 203 can drive the second bevel gear 205 to rotate, so that the second bevel gear 205 can drive the threaded rod 204 to rotate synchronously. The threaded rod 204 can drive the threaded block 206 to move upward, so that the threaded block 206 can push the rotating rods 207 on both sides to move synchronously. The rotating rods 207 on both sides can drive the slides 208 on both sides to expand synchronously to both sides, so that the rubber at one end of the slides 208 on both sides can be moved upward. The pads cooperate with the top blocks 11 on both sides respectively and fit with the surfaces of the steel wire ropes 5 on both sides to increase the friction with the surfaces of the steel wire ropes 5. The friction between the top block 11 and the slide plate 208 is less than the gravity of the steel truss. According to the above reverse operation, the telescopic end of the hydraulic cylinder 901 is extended, so that the frame 902 can push the lower surface of one end of the pawl 903, so that the pawl 903 no longer contacts the ratchet 7, and the output shaft of the second motor 14 is started to rotate in the opposite direction to unfold the steel wire ropes 5 on both sides. Due to the increase in the friction between the top block 11 and the surfaces of the steel wire ropes 5, the long-span steel truss can be slowly lowered, and the long-span steel truss can be installed.

[0033] Although the present invention has been shown and described with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein within the scope of the claims.

Claims

1. A large-span steel truss hoisting stopper connection structure, comprising a housing (1) and a transverse plate (10), wherein the outer wall of the housing (1) is symmetrically fixedly connected to the transverse plate (10), characterized in that: The inner wall of the shell (1) is provided with a limit device (9), the outer wall of the shell (1) is provided with an auxiliary limit device (2), one side of the horizontal plates (10) on both sides is fixedly connected to a support rod (12), one end of the support rod (12) on both sides is fixedly connected to a bottom plate (13), the inner wall of the shell (1) is rotatably connected to the protruding parts of one end of the two reels (4) through a bearing, one end of the reels (4) on both sides is fixedly connected to the two ends of the connecting rod (6), and the outer wall of the connecting rod (6) is fixedly connected to a ratchet (7) and a first gear (8).

2. The large-span steel truss hoisting limiter connection structure according to claim 1 is characterized in that: The auxiliary limiting device (2) comprises a box (201) and a first motor (202); the box (201) is fixedly connected to the outer wall of the housing (1); the outer wall of the output shaft of the first motor (202) is rotatably connected to the protruding part of the box (201) via a bearing; the inner wall of the box (201) is fixedly connected to the first motor (202) via a motor frame; one end of the output shaft of the first motor (202) is fixedly connected to a first bevel gear (203); the first bevel gear (203) is meshed with a second bevel gear (205); the second bevel gear (205) is meshed with a screw The threaded rod (204) is fixedly connected to the outer wall, and both ends of the threaded rod (204) are rotatably connected to the inner wall of the box (201) through bearings. The threaded rod (204) is threadedly connected to the threaded block (206), and the outer wall of the threaded block (206) is movably connected to one end of two rotating rods (207) through a pin shaft. The other ends of the rotating rods (207) on both sides are movably connected to two slide plates (208) through pin shafts respectively. The protruding parts of the slide plates (208) on both sides are slidably connected to the inner wall of the box (201), and one end of the slide plates (208) on both sides penetrates the box (201).

3. The large-span steel truss hoisting limiter connection structure according to claim 1 is characterized in that: The outer wall of the housing (1) is symmetrically fixedly connected with a top block (11), one side of the top block (11) on both sides is slidably connected to a steel wire rope (5), and one end of the steel wire rope (5) on both sides is fixedly connected with a hook (3).

4. The large-span steel truss hoisting limiter connection structure according to claim 3 is characterized in that: One end of the steel wire rope (5) on both sides passes through the outer casing (1) and is wound around the outer walls of the drums (4) on both sides; the first gear (8) is meshed with the second gear (16); the second gear (16) is fixedly connected to the output shaft of the second motor (14); the output shaft of the second motor (14) is rotationally connected to the support plate (15) via a bearing; one end of the support plate (15) is fixedly connected to the inner wall of the outer casing (1).

5. The large-span steel truss hoisting limiter connection structure according to claim 1 is characterized in that: The limiting device (9) comprises a hydraulic cylinder (901) and a frame (902); the hydraulic cylinder (901) is fixedly connected to the inner wall of the outer shell (1); the telescopic end of the hydraulic cylinder (901) is fixedly connected to the frame (902); the telescopic end of the hydraulic cylinder (901) and the interior of the frame (902) are respectively fixedly connected to the two ends of the inclined rod (906); the outer wall of the frame (902) is slidably connected to a through hole opened on the surface of the outer shell (1); a circular plate (905) is symmetrically fixedly connected to the inner wall of the outer shell (1); the circular plates (905) on both sides are movably connected to the pawls (903) through pins; one side of the pawl (903) is fixedly connected to one end of the spring (904).

6. A large-span steel truss hoisting limiter connection structure according to claim 5, characterized in that: The other end of the spring (904) is fixedly connected to the inner wall of the housing (1), and one end of the pawl (903) is engaged with the ratchet wheel (7).

Images