CN219058379U

CN219058379U - Overload alarm device for tower crane

Info

Publication number: CN219058379U
Application number: CN202222477903.1U
Authority: CN
Inventors: 张建东; 徐丽娜
Original assignee: Weihai Feng Hui Building Industry Science And Technology Co ltd
Current assignee: Weihai Feng Hui Building Industry Science And Technology Co ltd
Priority date: 2022-09-19
Filing date: 2022-09-19
Publication date: 2023-05-23
Anticipated expiration: 2032-09-19

Abstract

The utility model discloses a tower crane overload alarm device, in particular to the field of tower crane overload alarms, which comprises a shell, wherein a tower crane pull rope is slidably arranged in the shell, a sliding rod is fixedly arranged at the bottom of the tower crane pull rope, a spring is sleeved on the outer wall of the sliding rod, a drag hook is fixedly arranged at the bottom of the shell, an auxiliary pull rope is slidably arranged in the shell, a fixed hook is sleeved at one end of the auxiliary pull rope, the bottom of the fixed hook is fixedly provided with the ground, and a second pulley is fixedly arranged at the top of the shell. According to the utility model, the second pulley is utilized to transmit the force during sliding down, so that the first pulley is driven to move by the sliding down force, the first pulley is matched with the rotating rod sleeve to tighten, the sliding down degree is reduced, the loss is avoided, meanwhile, the influence of wind power on the device can be reduced, excessive shaking during lifting can be avoided through the constraint of the auxiliary stay rope, and the tightening force of the first sliding block on the auxiliary stay rope can not realize lifting during overload.

Description

Overload alarm device for tower crane

Technical Field

The utility model relates to the technical field of tower crane overload alarming, in particular to a tower crane overload alarming device.

Background

The tower crane is a lifting device which is most commonly used on a building site, is also called as a tower crane, and is used for hoisting construction raw materials such as steel bars, wood ridges, concrete, steel pipes and the like for construction by lengthening one section by one section. The tower crane is an indispensable equipment on the site.

The existing tower crane alarm device can only alarm when in overload, however, under the condition of overload of the tower crane, the tower crane can move down in a deflection way, and because the worker is possibly injured by mistake due to the downward deflection caused by the overload, the material is also damaged, the existing tower crane can still lift up under the overload state, and the possibility of serious accidents caused by whether to alarm is caused or not is caused.

Disclosure of Invention

In order to overcome the defects in the prior art, the embodiment of the utility model provides a tower crane overload alarm device, which is used for rapidly unloading materials sliding down during overload by rotating a sliding rod in oil so as to solve the problems in the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a tower crane overload alarm device, includes the casing, the inside slidable mounting of casing has the tower crane stay cord, tower crane stay cord bottom fixed mounting has the slide bar, the slide bar outer wall has cup jointed the spring, casing bottom fixed mounting has the drag hook, the inside slidable mounting of casing has auxiliary stay cord, auxiliary stay cord one end has cup jointed the fixed hook, fixed hook bottom fixed mounting has ground, casing top fixed mounting has the second pulley, the drive belt has been cup jointed to the second pulley outer wall, the worm has been cup jointed to the one end of second pulley is kept away from to the drive belt, worm outer wall meshing has the worm wheel, worm wheel one side fixed mounting has the threaded rod, threaded rod outer wall screw thread installation has the thread bush, thread bush top fixed mounting has the connecting plate, connecting plate one side fixed mounting has first pulley, casing inner wall fixed mounting has the rotor bar cover, the bull stick is installed to the inside rotation of bull stick cover, bull stick outer wall fixed mounting has the blade.

In a preferred embodiment, the worm wheel is rotatably mounted on the inner wall of the shell, the blade is slidably mounted on the inner wall of the rotating rod sleeve, the rotating rod sleeve is internally filled with oil, the blade is internally provided with a through hole, and the sliding rod is slidably mounted on the inner wall of the shell.

The beneficial effects of adopting the further scheme are as follows: through the inside fluid of rotor bar cover for the blade rotates all the time inside fluid, and fluid passes through from the through-hole of blade, produces adhesive force, makes the bull stick can only slowly rotate.

In a preferred embodiment, the spring is fixedly arranged at the bottom of the shell, a bottom plate is fixedly arranged at the other end, far away from the shell, of the spring, a telescopic rod is fixedly arranged at the top of the bottom plate, and the telescopic rod is fixedly arranged at the bottom of the shell.

The beneficial effects of adopting the further scheme are as follows: the telescopic rod can assist the spring, provide friction and stabilize the base plate against deflection.

In a preferred embodiment, a triggering group is meshed with one side of the tower crane stay rope, a buzzer is electrically installed at one end of the triggering component, an alarm lamp is electrically installed at the other end of the triggering component, and the alarm lamp is fixedly installed at one side of the shell.

The beneficial effects of adopting the further scheme are as follows: the triggering component consists of a rack and a gear at the bottom of the tower crane stay cord, and the gear rotates to enable positive and negative electrodes of the power supply to be contacted so as to trigger the buzzer and the alarm lamp.

In a preferred embodiment, a limiting pull rope is fixedly arranged on the other side of the tower crane pull rope, a second sliding block is fixedly arranged at one end of the limiting pull rope, a tension spring is fixedly arranged on one side of the second sliding block, a disc is fixedly arranged at the bottom of the inner wall of the shell, a first sliding block is slidably arranged on the inner wall of the disc, and a fixing block is fixedly arranged on one side of the disc.

The beneficial effects of adopting the further scheme are as follows: the auxiliary stay rope and the shell can be locked under the overload state, so that the tower crane can not lift the material under the overload state.

In a preferred embodiment, the auxiliary stay cord is slidably mounted on the inner wall of the disc, a longitudinal slideway is formed at the joint of the disc and the first sliding block, and the first sliding block is arranged in a sliding connection state with the disc through the vertical slideway of the disc.

The beneficial effects of adopting the further scheme are as follows: the transverse slide way and the longitudinal slide way are used for guiding the first slide block and the second slide block, so that the first slide blocks are mutually extruded when the nylon rope is pulled.

In a preferred embodiment, a transverse slideway is arranged at the joint of the disc and the second sliding block, the second sliding block is arranged in a sliding connection state with the disc through the transverse slideway of the disc, and nylon ropes are arranged among the fixed block, the first sliding block and the second sliding block.

The beneficial effects of adopting the further scheme are as follows: avoiding serious accidents caused by continuous lifting of the tower crane in an overload state.

The utility model has the technical effects and advantages that:

1. according to the utility model, the second pulley is utilized to transmit the force during sliding down, so that the first pulley is driven to move by the sliding down force, the first pulley is matched with the rotating rod sleeve to tighten, the sliding down degree is reduced, the loss is avoided, the influence of wind power on the device can be reduced, and excessive shaking during lifting can be avoided by the constraint of the auxiliary stay rope;

2. according to the utility model, when the weight of the material is excessive, the clamping force of the first sliding block on the auxiliary stay cord is utilized, so that lifting cannot be realized when the material is overloaded, damage to a tower crane device caused by overload is avoided, and the life health of tower crane staff is ensured.

Drawings

FIG. 1 is a schematic illustration of a front cross-sectional structure of the present utility model;

FIG. 2 is an enlarged view of portion A of FIG. 1 in accordance with the present utility model;

FIG. 3 is a schematic diagram of the front structure of the present utility model;

FIG. 4 is a schematic view of a partial cross-sectional structure of the present utility model;

fig. 5 is a schematic view of the structure of the rotating rod of the present utility model.

FIG. 6 is a schematic diagram of an auxiliary rope according to the present utility model

The reference numerals are: 1. a housing; 2. a tower crane pull rope; 3. an auxiliary pull rope; 4. a telescopic rod; 5. a bottom plate; 6. a slide bar; 7. a spring; 8. a drag hook; 9. a fixed hook; 10. ground surface; 11. an alarm lamp; 12. a first pulley; 13. a rotating rod; 14. a transmission belt; 15. a worm; 16. a worm wheel; 17. a threaded rod; 18. a thread sleeve; 19. a connecting plate; 20. a second pulley; 21. a disc; 22. a trigger assembly; 23. a buzzer; 24. a rotating rod sleeve; 25. a blade; 26. a tension spring; 27. a first slider; 28. a fixed block; 29. a second slider; 30. nylon ropes; 31. limiting the pull rope.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Example 1, as shown in fig. 1-6: a tower crane overload alarm device comprises a shell 1, see fig. 1 in detail, tower crane pull ropes 2 are slidably installed inside the shell 1, slide bars 6 are fixedly installed at the bottoms of the tower crane pull ropes 2, round holes are formed in the bottoms of the shell 1, the slide bars 6 are convenient to pass through, springs 7 are sleeved on the outer walls of the slide bars 6, draw hooks 8 are fixedly installed at the bottoms of the shell 1, workers can conveniently hang materials on the draw hooks 8, auxiliary pull ropes 3 are slidably installed inside the shell 1, auxiliary positioning is achieved, excessive deviation of wind force caused by the device from ascending track is avoided, fixed hooks 9 are sleeved at one ends of the auxiliary pull ropes 3, ground 10 is fixedly installed at the bottoms of the fixed hooks 9, a second pulley 20 is fixedly installed at the tops of the shell 1, a transmission belt 14 is sleeved on the outer wall of the second pulley 20 through manual rotation, a worm 15 is sleeved on one end of the transmission belt 14, which is far away from the second pulley 20, a worm 16 is meshed with the outer wall of the transmission belt 15, a threaded rod 17 is fixedly installed on one side of the worm rod 17, a threaded sleeve 18 is threadedly installed on the outer wall of the threaded rod 17, a sliding rod is slidably installed inside the auxiliary pull ropes, a guide and a sliding rod is used for limiting rotation of the threaded sleeve, a second pulley 18 is fixedly installed on one side of the worm wheel sleeve 18, a rotating a connecting plate 13 is fixedly installed on one side of the first pulley 19 is fixedly installed on the inner wall of the first pulley 13, a connecting plate is fixedly installed on the side of the inner wall of the rotary pulley 13, and the rotary plate is fixedly installed on the inner wall of the rotary plate 13, and the rotary plate is fixedly installed on the side of the rotary rod 13, and the rotary rod is fixedly installed on the side of the rotary rod is 13, and the rotary rod is fixedly installed on the side, and the rotary rod is, and the rotary connecting plate is, and the rotary rod is.

Further, worm wheel 16 rotates to be installed in casing 1 inner wall, blade 25 slidable mounting in bull stick cover 24 inner wall, and bull stick cover 24 intussuseption is filled with fluid, and the through-hole has been seted up to blade 25 inside, and slide bar 6 slidable mounting is in casing 1 inner wall, and spring 7 fixed mounting is in casing 1 bottom, and spring 7 keeps away from the other end fixed mounting of casing 1 and has bottom plate 5, and bottom plate 5 top fixed mounting has telescopic link 4, and telescopic link 4 fixed mounting is in casing 1 bottom, and the meshing of tower crane stay cord 2 one side has trigger assembly 22, and trigger assembly 22 one end electric mounting has buzzer 23, buzzer 23 model is YS-PBZ14075, trigger assembly 22 other end electric mounting has warning light 11, warning light 11 fixed mounting is in casing 1 one side.

It should be noted that, wherein, the workman is with supplementary stay cord 3 cover on fixed hook 9, then the workman hangs the material that needs to go up and down on drag hook 8, under the antagonism effect with tower crane stay cord 2 of material weight, drag hook 8 pulls casing 1 makes spring 7 and telescopic link 4 retract, slide bar 6 slides into inside casing 1, make tower crane stay cord 2 shrink, drive trigger assembly 22, buzzer 23 rings under the overweight condition of material, alarm lamp 11 shines simultaneously, remind the overload, the material overweight influence leads to casing 1 quick skew and gliding, supplementary stay cord 3 can lean on second pulley 20 and drive second pulley 20 rotation, the power that second pulley 20 rotated drives worm 15 through drive belt 15 rotation, worm 16 rotation drives worm gear 16 rotation, threaded rod 17 rotation drives thread bush 18 and removes, the thread bush 18 removes and makes first pulley 12 promote supplementary stay cord 3 card in bull stick 13 surface, and the tighter card is more tight this moment, bull stick 13 needs to become inside rotation in the inside drive belt 14, receive slow impression 13, consequently, can avoid the material to slowly to drop down through the slow gliding force of the casing 1, can avoid the quick damage when unloading.

Example 2, as shown in fig. 1-6: referring to fig. 2 in detail, a limiting pull rope 31 is fixedly installed on the other side of the tower crane pull rope 2, referring to fig. 6 in detail, a second sliding block 29 is fixedly installed at one end of the limiting pull rope 31, a tension spring 26 is fixedly installed on one side of the second sliding block 29, the position of the second sliding block 29 can be restored when overload occurs, the first sliding block 27 loses clamping force, a disc 21 is fixedly installed at the bottom of the inner wall of the shell 1, the first sliding block 27 is slidably installed on the inner wall of the disc 21, and a fixing block 28 is fixedly installed on one side of the disc 21.

Further, the auxiliary stay cord 3 is slidably mounted on the inner wall of the disc 21, a longitudinal slideway is formed at the joint of the disc 21 and the first slider 27, the first slider 27 is slidably connected with the disc 21 through the vertical slideway of the disc 21, a transverse slideway is formed at the joint of the disc 21 and the second slider 29, the second slider 29 is slidably connected with the disc 21 through the transverse slideway of the disc 21, and a nylon rope 30 is arranged among the fixed block 28, the first slider 27 and the second slider 29.

It should be noted that, when the tower crane stay 2 moves upward, the limiting stay 31 is pulled, and the limiting stay 31 pulls the second slider 29 to slide, so that the first sliders 27 approach each other, and in the case of overload, the first sliders 27 clamp the auxiliary stay 3, so that the housing 1 cannot be lifted in the overload state.

The last points to be described are: first, in the description of the present application, it should be noted that, unless otherwise specified and defined, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be mechanical or electrical, or may be a direct connection between two elements, and "upper," "lower," "left," "right," etc. are merely used to indicate relative positional relationships, which may be changed when the absolute position of the object being described is changed;

secondly: in the drawings of the disclosed embodiments, only the structures related to the embodiments of the present disclosure are referred to, and other structures can refer to the common design, so that the same embodiment and different embodiments of the present disclosure can be combined with each other under the condition of no conflict;

finally: the foregoing description of the preferred embodiments of the utility model is not intended to limit the utility model to the precise form disclosed, and any such modifications, equivalents, and alternatives falling within the spirit and principles of the utility model are intended to be included within the scope of the utility model.

Claims

1. The utility model provides a tower crane overload alarm device, includes casing (1), its characterized in that: the utility model discloses a rotary rod (24) of a motor vehicle, including casing (1), casing (1) internally sliding mounting has tower crane stay cord (2), tower crane stay cord (2) bottom fixed mounting has slide bar (6), spring (7) have been cup jointed to slide bar (6) outer wall, casing (1) bottom fixed mounting has drag hook (8), casing (1) internally sliding mounting has auxiliary stay cord (3), fixed hook (9) have been cup jointed to auxiliary stay cord (3) one end, fixed hook (9) bottom fixed mounting has ground (10), casing (1) top fixed mounting has second pulley (20), second pulley (20) outer wall cup joints drive belt (14), worm (15) have been cup jointed to the one end that second pulley (20) were kept away from to drive belt (14), worm (15) outer wall meshing has worm wheel (16), threaded rod (17) are installed to worm wheel (16) one side fixed mounting, threaded rod (17) outer wall screw thread mount has thread bush (18), connecting plate (19) are installed at the top fixed mounting, connecting plate (19) one side fixed mounting has first pulley (12), casing (24) are installed in rotation bull rod (24), the outer wall of the rotating rod (13) is fixedly provided with a blade (25).

2. The tower crane overload warning device according to claim 1, wherein: the worm wheel (16) is rotatably arranged on the inner wall of the shell (1), the blades (25) are slidably arranged on the inner wall of the rotating rod sleeve (24), oil is filled in the rotating rod sleeve (24), through holes are formed in the blades (25), and the sliding rod (6) is slidably arranged on the inner wall of the shell (1).

3. The tower crane overload warning device according to claim 1, wherein: the spring (7) is fixedly arranged at the bottom of the shell (1), the other end, far away from the shell (1), of the spring (7) is fixedly provided with a bottom plate (5), the top of the bottom plate (5) is fixedly provided with a telescopic rod (4), and the telescopic rod (4) is fixedly arranged at the bottom of the shell (1).

4. The tower crane overload warning device according to claim 1, wherein: the utility model discloses a tower crane stay cord, including tower crane stay cord (2), trigger subassembly (22) are engaged to one side, trigger subassembly (22) one end electric installation has bee calling organ (23), trigger subassembly (22) other end electric installation has warning light (11), warning light (11) fixed mounting is in casing (1) one side.

5. The tower crane overload warning device according to claim 1, wherein: the utility model discloses a tower crane stay cord, including tower crane stay cord (2), first slider (27) of inner wall slidable mounting, fixed block (28) of one side fixed mounting of disc (21), tower crane stay cord (2) opposite side fixed mounting has restriction stay cord (31), restriction stay cord (31) one end fixed mounting has second slider (29), second slider (29) one side fixed mounting has extension spring (26), disc (21) are fixed mounting to the inner wall bottom of casing (1).

6. The tower crane overload warning apparatus of claim 5, wherein: the auxiliary stay cord (3) is slidably mounted on the inner wall of the disc (21), a longitudinal slide way is arranged at the joint of the disc (21) and the first slide block (27), and the first slide block (27) is slidably connected with the disc (21) through the vertical slide way of the disc (21).

7. The tower crane overload warning apparatus of claim 5, wherein: the connecting part of the disc (21) and the second sliding block (29) is provided with a transverse slideway, the second sliding block (29) is arranged in a sliding connection state with the disc (21) through the transverse slideway of the disc (21), and a nylon rope (30) is arranged among the fixed block (28), the first sliding block (27) and the second sliding block (29).