A labor-saving anti-fall device

Abstract

The present invention provides a labor-saving anti-falling device, including an anti-falling device, the anti-falling device including a rotating member and a fixed member, the rotating member is rotatably arranged on the fixed member through a first rotating shaft, at least one hook is rotatably provided on the rotating member, and a limiting rod is provided on the fixed member, and the rotating member rotates to generate centrifugal force to enable the hook to hook the limiting rod, thereby achieving the limiting of the rotating member. The labor-saving anti-falling device also includes a ladder labor-saving device, the first rotating shaft is fixedly connected to the rotating member, the end of the first rotating shaft is connected to the ladder labor-saving device, and the ladder labor-saving device is limited by hooking the limiting rod. The centrifugal force generated by the rotation of the rotating member is used to throw the hook out to enable the hook to hook the limiting rod, and the centrifugal force is cleverly used to achieve the limiting, meet the anti-falling requirements, and at the same time prevent the rotating member from rotating too fast, that is, prevent the operator from moving too fast in the air, and play a speed limiting role.

Description

Technical Field

[0001] The invention relates to the technical field of anti-fall protection devices, and in particular to a labor-saving anti-fall device. Background Art

[0002] Tower cranes are large-scale mechanical equipment commonly used on construction sites. They are widely used because of their high lifting height and wide coverage area. The installers and drivers of tower cranes need to use the ladder on the tower crane to go up and down the tower crane. In order to facilitate people to go up and down the tower crane, a ladder labor-saving device is generally used to assist, that is, the weight of the personnel is reduced by counterweights, making it easier to go up and down the ladder, greatly reducing the difficulty of going up and down the tower crane and the labor intensity of the personnel.

[0003] Although the ladder labor-saving device can reduce the difficulty of workers going up and down the tower crane, there is still a situation where workers climb the ladder too fast, in which case they are prone to stepping on empty air. At the same time, if the workers are not focused or their feet slip, they may also step on empty air. Therefore, it is necessary to add corresponding anti-fall devices to prevent stepping on empty air and fall and control the workers' ladder climbing speed.

[0004] In summary, there is an urgent need for a labor-saving anti-falling device to solve the problems existing in the prior art. Summary of the invention

[0005] The object of the present invention is to provide a labor-saving anti-falling device, and the specific technical scheme is as follows:

[0006] A labor-saving anti-falling device comprises an anti-falling device, wherein the anti-falling device comprises a rotating part and a fixed part, wherein the rotating part is rotatably arranged on the fixed part through a first rotating shaft, at least one hook is rotatably provided on the rotating part, and a limiting rod is provided on the fixed part. The rotating part rotates to generate centrifugal force to enable the hook to hook the limiting rod, thereby limiting the rotating part.

[0007] Preferably in the above technical scheme, the fixing member comprises two fixing plates arranged opposite to each other, both fixing plates are provided with waist-shaped holes, and both ends of the limiting rod are respectively arranged on the fixing plates through the waist-shaped holes; the two fixing plates arranged opposite to each other are connected by at least two supporting members.

[0008] Preferably in the above technical solution, the rotating member is arranged between two fixed disks; the rotating member includes two rotating disks arranged opposite to each other, the two rotating disks are connected by a hook shaft group, and the hook is rotatably arranged on the hook shaft group.

[0009] Preferably in the above technical solution, the hook shaft group includes a hook shaft, and two rotating disks arranged opposite to each other are connected via the hook shaft, and the hook is rotatably arranged on the hook shaft and located between the two rotating disks.

[0010] Preferably in the above technical solution, the hook shaft assembly further includes two retaining rings, both of which are sleeved on the hook shaft and are respectively arranged between the hook and the adjacent rotating disk.

[0011] Preferably in the above technical solution, the hook shaft group and the hook are arranged in one-to-one correspondence, and the number of the hooks is at least two; and the plurality of hooks are evenly distributed on the rotating member.

[0012] Preferably in the above technical solution, the shape of the hook is an inverted T-shaped structure.

[0013] Preferably, the above technical solution also includes a ladder labor-saving device, wherein the first rotating shaft is fixedly connected to the rotating member, and the end of the first rotating shaft is connected to the ladder labor-saving device, and the ladder labor-saving device is limited by hooking the limit rod.

[0014] Preferably in the above technical solution, a first gear is provided at the end of the first rotating shaft, and the anti-fall device limits the ladder labor-saving device through the engagement of the first gear with the second gear in the ladder labor-saving device.

[0015] Preferably, in the above technical solution, the ladder-climbing labor-saving device comprises a first wire drum and a second wire drum arranged on a second rotating shaft, both ends of the second rotating shaft are arranged on a bearing seat through bearings, and a second gear is arranged at the end of the second rotating shaft;

[0016] A safety rope is wound around both the first wire drum and the second wire drum, and the winding direction of the safety rope on the first wire drum is opposite to the winding direction of the safety rope on the second wire drum.

[0017] The application of the technical solution of the present invention has the following beneficial effects:

[0018] (1) In the labor-saving anti-falling device of the present invention, the anti-falling device includes a rotating member and a fixed member, the rotating member is rotatably arranged on the fixed member through a first rotating shaft, at least one hook is rotatably provided on the rotating member, and a limit rod is provided on the fixed member. The rotating member rotates to generate centrifugal force to enable the hook to hook the limit rod, thereby achieving the limit of the rotating member. The centrifugal force generated by the rotation of the rotating member is used to throw the hook out to enable the hook to hook the limit rod, and the centrifugal force is cleverly used to achieve the limit, meeting the anti-falling requirements. The structure is simple and reliable, and only requires the rotation rate of the rotating member to meet the corresponding centrifugal force value. At the same time, the rotating member is prevented from rotating too fast, that is, the operator is prevented from moving too fast in the air, which plays a speed limiting role and effectively prevents accidents.

[0019] (2) The anti-fall device of the present invention can effectively prevent workers from falling or moving too fast on the ladder. If the worker climbs the ladder too fast, the centrifugal force generated by the rotating part will cause the hook to hook the limit rod, and the counterweight safety rope cannot be released further, which will prompt the worker to slow down and prevent accidents. If the worker falls from the ladder, the worker's movement speed in the air will increase suddenly, and the centrifugal force generated by the rotating part will also cause the hook to hook the limit rod, and the first and second wire drums will not continue to rotate, and the safety rope on the worker will not be released further, which will prevent the worker from falling.

[0020] (3) The hook of the anti-falling device of the present invention is in the shape of an inverted T-shaped structure. That is, the hook can hook the limit rod regardless of whether the rotating part is rotating forward or reverse. In addition, the hook of the T-shaped structure has a small bending angle, which is convenient for detaching from the limit rod. After the hook hooks the limit rod, the hook can be detached from the limit rod by rotating the rotating part in the opposite direction of the hooking direction.

[0021] (4) In the anti-falling device of the present invention, waist-shaped holes are provided on both fixing plates, and the waist-shaped holes facilitate the adjustment of the position of the limit rod, ensuring that the hook is effectively hooked with the limit rod, thereby achieving the limit; the adjustable setting of the limit rod can reduce the difficulty of assembling the anti-falling device and realize the installation of the limit rod in a suitable position.

[0022] In addition to the above-described purposes, features and advantages, the present invention has other purposes, features and advantages. The present invention will be further described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 It is a schematic diagram of the overall structure of the anti-falling device of the present invention;

[0025] Figure 2 is a cross-sectional view of the anti-falling device of the present invention;

[0026] Figure 3 yes Figure 1 A schematic diagram of the structure of the middle hook and the hook shaft assembly;

[0027] Figure 4 It is a schematic diagram of the structure of the anti-fall device and the ladder labor-saving device;

[0028] Figure 5 It is a schematic diagram of the labor-saving anti-falling device of the present invention applied to a construction hoist;

[0029] Among them, 1. rotating part, 2. fixing part, 3. hook, 4. limiting rod, 5. first rotating shaft, 6. first gear, 7. supporting part, 8. hook shaft group, 8.1. hook shaft, 8.2. retaining ring, 9. second gear, 10. bearing seat, 11. first wire drum, 12. second wire drum, 13. second rotating shaft, 14. base, 15. construction elevator, 15.1. hanging basket, 16. labor-saving anti-fall device, 17. counterweight. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below with reference to the accompanying drawings, but the present invention can be implemented in many different ways as defined and covered by the claims.

[0031] Embodiment 1:

[0032] See also Figure 1-4 A labor-saving anti-falling device includes an anti-falling device and a ladder climbing labor-saving device. The anti-falling device includes a rotating part 1 and a fixed part 2. The rotating part 1 is rotatably arranged on the fixed part 2 through a first rotating shaft 5. At least one hook 3 is rotatably provided on the rotating part 1. A limiting rod 4 is provided on the fixed part 2. The rotating part 1 rotates to generate centrifugal force to enable the hook 3 to hook the limiting rod 4, thereby limiting the rotating part 1.

[0033] Preferably, the rotating member, the fixed member and the first rotating shaft are coaxially arranged, the rotating member and the first rotating shaft are fixedly connected, the end of the first rotating shaft 5 is connected to the external device, and the hook 3 hooks the limiting rod 4 to achieve the limitation of the external device.

[0034] The fixing member 2 includes two fixing plates arranged opposite to each other, both fixing plates are provided with waist-shaped holes, and both ends of the limiting rod 4 are respectively arranged on the fixing plates through the waist-shaped holes; the two fixing plates arranged opposite to each other are connected by at least two supporting members 7.

[0035] Preferably, the length direction of the waist-shaped hole points to the center of the fixed disk.

[0036] The first rotating shaft 5 can be arranged on the fixed plate by using a bearing, so that the first rotating shaft can be rotatably arranged on the fixed component.

[0037] The support member includes a fastening bolt, a nut and a sleeve. The sleeve is arranged between two fixed plates. The fastening bolt passes through the sleeve. The two fixed plates are fastened by the fastening bolt and the nut. The sleeve is used to fix the distance between the two fixed plates.

[0038] The rotating member 1 is arranged between two fixed disks; the rotating member 1 includes two rotating disks arranged opposite to each other, and the two rotating disks are connected by a hook shaft group 8, and the hook 3 is rotatably arranged on the hook shaft group 8.

[0039] The hook shaft assembly 8 comprises a hook shaft 8.1, and two rotating disks arranged opposite to each other are connected via the hook shaft 8.1. The hook 3 is rotatably arranged on the hook shaft 8.1 and is located between the two rotating disks.

[0040] The hook shaft assembly 8 further comprises two retaining rings 8.2, both of which are sleeved on the hook shaft 8.1 and respectively arranged between the hook 3 and the adjacent rotating disk.

[0041] The hook shaft group 8 is arranged one by one with the hook 3, and the number of the hook 3 is at least two; multiple hooks 3 are evenly arranged on the rotating member, see Figure 2 , the number of the hooks is four.

[0042] Preferably, the hook 3 is in an inverted T-shaped structure. That is, the hook can hook the limit rod regardless of whether the rotating member rotates forward or reversely. In addition, the hook of the T-shaped structure has a small bending angle, which is convenient for detaching from the limit rod. After the hook in the anti-fall device hooks the limit rod, the hook can be detached from the limit rod by rotating the rotating member in the opposite direction of the hooking direction.

[0043] See also Figure 4 In this embodiment, a first gear 6 is provided at the end of the first rotating shaft 5, and the anti-falling device limits the ladder labor-saving device through the engagement of the first gear 6 with the second gear 9 in the ladder labor-saving device.

[0044] The ladder climbing labor-saving device includes a first wire drum 11 and a second wire drum 12 arranged on a second rotating shaft 13 , both ends of the second rotating shaft 13 are arranged on a bearing seat 10 through bearings, and a second gear 9 is arranged at the end of the second rotating shaft 13 .

[0045] The first wire drum and the second wire drum are both wound with a safety rope, and the winding direction of the safety rope on the first wire drum is opposite to the winding direction of the safety rope on the second wire drum. Specifically, the first wire drum and the second wire drum are used to retract and release the counterweight and the safety rope of the operator, respectively, that is, when the operator climbs up the ladder, the counterweight moves downward, and the counterweight plays a role in reducing the gravity of the operator, thereby reducing the difficulty of the operator climbing the ladder.

[0046] The anti-falling device is arranged on the base 14 through the fixing member 2, and the ladder climbing labor-saving device is arranged on the base 14 through the bearing seat 10.

[0047] The labor-saving anti-falling device in this embodiment can effectively prevent the operator from falling or moving too fast on the ladder. If the operator climbs the ladder too fast, the centrifugal force generated by the rotating part will cause the hook to hook the limit rod, and the counterweight safety rope cannot be released further, which has the effect of prompting the operator to slow down and prevent accidents; if the operator falls from the ladder, the operator's movement speed in the air will increase suddenly, and the centrifugal force generated by the rotating part will also cause the hook to hook the limit rod, and the first and second wire drums will not continue to rotate, and the safety rope on the operator will not be released further, which has the effect of preventing falling.

[0048] See also Figure 5 In addition to being used for climbing up and down ladders, the labor-saving anti-fall device in this embodiment can also be used on a construction elevator 15. The labor-saving anti-fall device 16 in this embodiment is arranged higher than the construction elevator. The safety ropes of the first wire drum and the second wire drum are respectively connected to the counterweight 17 and the hanging basket 15.1 in the construction elevator (a fixed pulley needs to be arranged between the hanging basket and the labor-saving anti-fall device). Its working principle is as described above, which can prevent the hanging basket from derailing or falling caused by the breaking (or loosening) of the standard section of the construction elevator, and can also limit the movement speed of the hanging basket.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A labor-saving anti-fall device, characterized in that: The anti-falling device comprises a rotating member (1) and a fixed member (2); the rotating member (1) is rotatably arranged on the fixed member (2) via a first rotating shaft (5); at least one hook (3) is rotatably arranged on the rotating member (1); a limiting rod (4) is arranged on the fixed member (2); the rotating member (1) rotates to generate centrifugal force so that the hook (3) hooks the limiting rod (4), thereby limiting the rotating member (1); The fixing member (2) comprises two fixing plates arranged opposite to each other, each of the two fixing plates being provided with a waist-shaped hole, and the two ends of the limiting rod (4) are respectively arranged on the fixing plates through the waist-shaped holes; the two fixing plates arranged opposite to each other are connected by at least two supporting members (7); The rotating member (1) is arranged between two fixed disks; the rotating member (1) comprises two rotating disks arranged opposite to each other, the two rotating disks are connected via a hook shaft group (8), and the hook (3) is rotatably arranged on the hook shaft group (8); The hook (3) is in the shape of an inverted T-shaped structure.

2. The labor-saving anti-falling device according to claim 1, characterized in that: The hook shaft assembly (8) comprises a hook shaft (8.1), two rotating disks arranged opposite to each other are connected via the hook shaft (8.1), and the hook (3) is rotatably arranged on the hook shaft (8.1) and is located between the two rotating disks.

3. The labor-saving anti-falling device according to claim 2, characterized in that: The hook shaft assembly (8) also includes two retaining rings (8.2), which are both sleeved on the hook shaft (8.1) and respectively arranged between the hook (3) and the adjacent rotating disk.

4. The labor-saving anti-falling device according to claim 3, characterized in that: The hook shaft group (8) and the hook (3) are arranged in one-to-one correspondence, and the number of the hooks (3) is at least two; and the plurality of hooks (3) are evenly distributed on the rotating member.

5. The labor-saving anti-falling device according to any one of claims 1 to 4, characterized in that: It also comprises a ladder labor-saving device, wherein the first rotating shaft (5) is fixedly connected to the rotating member (1), the end of the first rotating shaft (5) is connected to the ladder labor-saving device, and the ladder labor-saving device is limited by hooking the limit rod (4) with the hook (3).

6. The labor-saving anti-falling device according to claim 5, characterized in that: A first gear (6) is provided at the end of the first rotating shaft (5), and the anti-fall device position-limiting ladder labor-saving device is realized by meshing the first gear (6) with the second gear (9) in the ladder labor-saving device.

7. The labor-saving anti-falling device according to claim 6, characterized in that: The ladder climbing labor-saving device comprises a first wire drum (11) and a second wire drum (12) which are arranged on a second rotating shaft (13); both ends of the second rotating shaft (13) are arranged on a bearing seat (10) via bearings; a second gear (9) is arranged at the end of the second rotating shaft (13); a safety rope is wound around both the first wire drum and the second wire drum; the winding direction of the safety rope on the first wire drum is opposite to the winding direction of the safety rope on the second wire drum.

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