Climbing tower crane safety protection device

Abstract

The application provides a climbing tower crane safety protection device, which comprises a shell, a U-shaped body with an open end, a movable block buckled to the open end, and a safety rope between the movable block and the opening; an adjustable limiting unit, which comprises a U-shaped block slidingly connected to the shell, a limiting block arranged on the U-shaped block, and an adjustable piece connecting the U-shaped block and the limiting block, and the adjustable piece is used for adjusting the distance between the U-shaped block and the limiting block; a pressing unit, which is rotatably arranged on the shell and abuts against the U-shaped block, and the pressing unit drives the U-shaped block to move towards the opening of the shell when the pressing unit rotates; and a locking unit, which is arranged on the opening of the shell and connected with the movable block, and is used for driving the movable block to cooperate with or separate from the opening of the shell. The distance between the limiting block and the movable block is changed through the adjustable piece, the safety rope with different diameters is applicable, the applicability of the application is improved, the safety rope is always enclosed in the shell, the safety rope cannot be taken out of the shell during the movement of the shell following the maintenance personnel, and the safety is indirectly ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of high-altitude operation anti-falling devices, and particularly relates to a climbing tower crane safety protection device. BACKGROUND

[0002] At present, tower cranes are basically used for transportation operation at construction sites, and the tower crane operation height is high, which seriously endangers the safety of tower crane maintenance personnel and operators when they climb up and down. In order to solve this problem, the safety rope is generally arranged at the upper and lower top of the tower crane, and the maintenance personnel are equipped with related safety protection devices on the safety rope to prevent safety hazards. For example, a Chinese invention patent with the patent number CN113666309A discloses a "wire rope locker for a hanging basket", which can cooperate with the safety rope to ensure the safety of the maintenance personnel and the operators. However, as known from the specification and the drawings, the safety rope locking position of the locker is a fixed structure, which leads to the fact that the distance between the safety rope and the locking position is not adjustable, and the locker can only be applied to one type of safety rope, and the applicability is not high. Moreover, the locking position has two notches, which leads to the risk of the safety rope being shaken out in the high altitude. SUMMARY

[0003] In view of the deficiencies in the prior art, the present application provides a climbing tower crane safety protection device, which solves the problems of the prior art that the distance between the safety rope and the locking position is not adjustable, and the safety rope has the risk of being shaken out in the high altitude.

[0004] According to an embodiment of the present application, a climbing tower crane safety protection device comprises:

[0005] A shell is in a U shape with one end being open, and a movable block is buckled to the open end, and the safety rope is located between the movable block and the opening;

[0006] An adjustable limiting unit comprises a U-shaped block slidingly connected to the shell, a limiting block arranged on the U-shaped block, and an adjustable piece connecting the U-shaped block and the limiting block, and the adjustable piece is used to adjust the distance between the U-shaped block and the limiting block;

[0007] A pressing unit is rotationally arranged on the shell and abuts against the U-shaped block, and the pressing unit drives the U-shaped block to move towards the opening of the shell when the pressing unit rotates;

[0008] A locking unit is arranged on the opening of the shell and connected with the movable block, and is used to drive the movable block to cooperate with or separate from the opening of the shell.

[0009] Preferably, the adjustable piece comprises:

[0010] A driving rod is rotationally arranged in an installation channel formed in the U-shaped block, and the limiting block is buckled in the installation channel;

[0011] A moving block is slidably arranged in the mounting channel and engages with the screw thread of the driving rod;

[0012] An adjusting rod is rotatably arranged between the moving block and the limiting block and forms an included angle with the limiting block and the driving rod, and the two inner staggered angles of the adjusting rod are increased or decreased correspondingly when the driving rod rotates.

[0013] Preferably, a clamping groove is formed in the U-shaped block, and a clamping block is arranged on the limiting block and slidably arranged in the clamping groove.

[0014] Preferably, the extrusion unit comprises:

[0015] An extrusion member is a cam rotatably arranged in the housing, and the protrusion of the cam abuts against the U-shaped block;

[0016] A handle is arranged on the side of the housing and opposite to the protrusion, and a mounting hole is further formed in the handle; and

[0017] A resilient member is arranged to drive the cam to return to the original position.

[0018] Preferably, the resilient member is a tension spring, and the housing and the handle are both correspondingly provided with a pull ring, and the tension spring is arranged between the two pull rings.

[0019] Preferably, the extrusion member is a rotating block and a connecting frame movably arranged on the rotating block, the rotating block is rotatably arranged in the housing and connected with the handle, the U-shaped block is provided with a rotating seat, and the connecting frame is rotatably arranged in the rotating seat.

[0020] Preferably, the locking unit comprises:

[0021] A mounting rod is arranged between the two mounting seats corresponding to the opening of the housing, and an adjusting groove is formed in the mounting rod, and the adjusting groove forms a horizontal groove and a vertical groove;

[0022] A protrusion is arranged in the through hole of the movable block and clamped in the horizontal groove or the vertical groove; when the protrusion is clamped in the horizontal groove, the movable block is separated from the opening, and when the protrusion is clamped in the vertical groove, the movable block is engaged with the opening.

[0023] A pressure member arranged on the mounting rod and a locking member arranged on the movable block.

[0024] Preferably, the pressure member comprises a fixed frame arranged on the mounting rod and a pressure spring, the fixed frame is arranged on the movable block, and the pressure spring abuts against the top of the fixed frame.

[0025] Preferably, the pressure member comprises a nut threadedly connected to the top end of the mounting rod, and the nut abuts against the fixed frame.

[0026] Preferably, the locking member comprises a connecting pin arranged on the movable block and a connecting block arranged on the opening, and when the protrusion is clamped in the vertical groove, the connecting pin is arranged in the connecting block.

[0027] Compared with the prior art, the present application has the following beneficial effects:

[0028] In use, the movable block can be opened and closed to install and limit the safety rope in the opening part of the shell. When the maintenance personnel instantaneously descend, the extrusion unit is driven to rotate to abut against the U-shaped block, so that the limiting block is pressed on the safety rope by the extrusion of the U-shaped block, the safety rope is clamped by the cooperation of the limiting block and the movable block, the maintenance personnel is prevented from falling, and safety is ensured.

[0029] Secondly, the U-shaped block and the limiting block are connected through an adjustable part. When the safety rope is located between the opening and the movable block, the distance between the U-shaped block and the limiting block is adjusted through the adjustable part until the limiting block contacts the safety rope, so that the limiting block can be pressed on the safety rope to complete the self-locking work under the movement of the U-shaped block. The distance between the limiting block and the movable block is changed through the adjustable part, which is suitable for safety ropes of different diameters, and the applicability of the present application is improved.

[0030] Furthermore, the movable block is an integral arc panel structure, which can be completely fixed and buckled in the opening part of the shell under the action of the locking unit, so that the safety rope is always enclosed in the shell, and the safety rope will not come out of the shell during the movement of the shell with the maintenance personnel, which indirectly ensures safety. BRIEF DESCRIPTION OF DRAWINGS

[0031] Figure 1 is a schematic view of the three-dimensional structure of the present application.

[0032] Figure 2 is a schematic view of the cross-sectional structure of the shell and the U-shaped block in the present application.

[0033] Figure 3 is a schematic view of the explosion structure of the shell and the movable block in the present application.

[0034] Figure 4 is Figure 3 is a schematic view of the enlarged structure of area A.

[0035] Figure 5 is a schematic view of the explosion structure of the U-shaped block and the limiting block in the present application.

[0036] Figure 6 is a schematic view of the structure of example two in the present application.

[0037] Figure 7 is a schematic view of the structure of example three in the present application.

[0038] In the above attached figures: 1. Safety rope; 2. Housing; 3. Handle; 31. Mounting hole; 32. Tension spring; 33. Pull ring; 34. Cam; 35. Connecting frame; 36. Rotating seat; 37. Rotating block; 4. U-shaped block; 41. Limiting block; 42. Adjusting rod; 43. Moving block; 44. Drive rod; 45. Locking block; 46. Locking groove; 5. Movable block; 51. Connecting pin; 52. Connecting block; 53. Mounting seat; 54. Mounting rod; 55. Adjusting groove; 56. Fixing frame; 57. Pressure spring; 58. Protrusion; 59. Nut. Detailed Implementation

[0039] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and embodiments.

[0040] Example 1:

[0041] like Figures 1 to 5 As shown, this embodiment of the invention proposes a safety protection device for climbing tower cranes, installed on safety rope 1, comprising:

[0042] The shell 2 is U-shaped with one end open, and a movable block 5 is fastened to the opening. The safety rope 1 is located between the movable block 5 and the opening.

[0043] The adjustable limiting unit includes a U-shaped block 4 slidably connected to the housing 2, a limiting block 41 disposed on the U-shaped block 4, and an adjustable component connecting the U-shaped block 4 and the limiting block 41. The adjustable component is used to adjust the distance between the U-shaped block 4 and the limiting block 41.

[0044] The extrusion unit is rotatably mounted on the housing 2 and abuts against the U-shaped block 4. When the extrusion unit rotates, it drives the U-shaped block 4 to move toward the opening of the housing 2.

[0045] The locking unit is located at the opening of the housing 2 and connected to the movable block 5, and is used to drive the movable block 5 to engage or disengage with the opening of the housing 2.

[0046] Firstly, the shell 2 and the movable block 5 constitute the installation space of the safety rope 1, the safety rope 1 is installed and limited in the opening part of the shell 2 by opening and closing the movable block 5, and the opening of the shell 2 is closed by the cooperation of the movable block 5 and the locking unit, so that the safety rope 1 cannot come out of the shell 2 during the movement of the shell 2 following the maintenance personnel, thereby indirectly ensuring safety. Secondly, the limiting block 41 in the adjustable limiting unit is mainly used for fixing the safety rope 1, and under the cooperation of the U-shaped block 4 and the extrusion unit, when the maintenance personnel instantaneously descend, the extrusion unit is driven to rotate to abut against the U-shaped block 4, so that the limiting block 41 is pressed on the safety rope 1 by the extrusion of the U-shaped block 4, the safety rope 1 is clamped by the cooperation of the limiting block 41 and the movable block 5, the maintenance personnel can be fixed on the safety rope 1 to avoid falling; and the face-to-face contact fixing mode of the limiting block 41 and the safety rope 1 not only improves the strength of the contact surface to ensure locking, but also is not easy to cause the breakage and damage of the safety rope 1. Finally, the adjustable limiting unit further includes an adjustable part connecting the U-shaped block 4 and the limiting block 41, the distance between the U-shaped block 4 and the limiting block 41 is adjusted by the adjustable part until the limiting block 41 contacts the safety rope 1, so that the limiting block 41 can be pressed on the safety rope 1 under the movement of the U-shaped block 4 to complete the self-locking work, and the distance between the limiting block 41 and the movable block 5 can be changed to be suitable for safety ropes 1 with different diameters.

[0047] In order to quickly adjust the distance between the limiting block 41 and the movable block 5, as shown in Figure 2 and Figure 5 , the adjustable part includes:

[0048] The driving rod 44 is rotatably arranged in the installation channel of the U-shaped block 4, and the limiting block 41 is buckled in the installation channel;

[0049] The moving block 43 is slidingly arranged in the installation channel and is engaged on the threads of the driving rod 44;

[0050] The adjusting rod 42 is rotatably arranged between the moving block 43 and the limiting block 41, and forms an included angle with the limiting block 41 and the driving rod 44, so that when the driving rod 44 rotates, the two inner alternate angles of the adjusting rod 42 correspondingly increase or decrease.

[0051] The U-shaped block 4 is provided with a clamping groove 46, and the limiting block 41 is provided with a clamping block 45, and the clamping block 45 is slidingly arranged in the clamping groove 46.

[0052] In the embodiment, when the distance between the U-shaped block 4 and the limiting block 41 is adjusted by the adjustable part, the driving rod 44 is directly rotated to drive the two moving blocks 43 to move close to or away from each other, so that one end of the adjusting rod 42 moves with the moving block 43, thereby increasing or decreasing the two inner staggered angles of the adjusting rod 42, and the other end of the adjusting rod 42 pushes or pulls the limiting block 41, so that the limiting block 41 moves close to or away from the movable block 5, thereby reducing or increasing the distance between the limiting block 41 and the movable block 5, so that the safety rope 1 or the steel cable of different diameters can still be squeezed and fixed by the limiting block 41 under the condition that the squeezing unit does not displace.

[0053] As shown in Figure 1 With Figure 2 As shown, the squeezing unit comprises:

[0054] The squeezing part is a cam 34, which is rotatably arranged in the housing 2, and the protrusion of the cam 34 abuts against the U-shaped block 4;

[0055] The handle 3 is arranged on the side of the housing 2 and opposite to the protrusion, and the handle 3 is also provided with a mounting hole 31; and

[0056] The resilient part is used to drive the cam 34 to return to the original position.

[0057] The resilient part is a tension spring 32, and the housing 2 and the handle 3 are both provided with a pull ring 33, and the tension spring 32 is arranged between the two pull rings 33.

[0058] In the embodiment, when the maintenance personnel climb the tower crane, the safety hook lock arranged on the human body is installed on the mounting hole 31 of the handle 3, and when climbing, the housing 2 is moved on the safety rope 1, and when the maintenance personnel steps and falls, the safety hook lock transmits the instantaneous tension to the handle 3, so that the handle 3 is instantaneously rotated by the tension, so that the protrusion of the cam 34 contacts and continuously squeezes the U-shaped block 4, and drives the limiting block 41 to move towards the movable block 5 to squeeze the safety rope 1, fixes the housing 2 on the safety rope 1, and completes the instantaneous locking. After the maintenance personnel climbs to the designated position again (i.e. the handle 3 is not subjected to tension), the handle 3 can be returned to the original position under the action of the tension spring 32, so that the cam 34 is counterclockwise rotated to release the squeezing of the U-shaped block 4, and the safety rope 1 is not squeezed by the limiting block 41, so that the housing 2 is in a movable state.

[0059] In order to facilitate the installation and disassembly of the movable block 5, as shown in Figure 4 As shown, the locking unit comprises:

[0060] The mounting rod 54 is arranged between the two mounting seats 53 corresponding to the opening of the shell 2, and the adjusting groove 55 is arranged on the mounting rod 54, and the adjusting groove 55 is formed with a horizontal groove and a vertical groove.

[0061] The protrusion 58 is arranged in the through hole of the movable block 5 and is clamped in the horizontal groove or the vertical groove; when the protrusion 58 is clamped in the horizontal groove, the movable block 5 is separated from the opening, and when the protrusion 58 is clamped in the vertical groove, the movable block 5 is buckled in the opening.

[0062] In the embodiment, the movable block 5 is rotatably arranged on the mounting rod 54 to freely open the movable block 5 (mount the shell 2 on the safety rope 1) or buckle the movable block 5 in the opening of the shell 2 (close the safety rope 1 in the shell 2). Since the adjusting groove 55 is formed with a horizontal groove and a vertical groove, the through hole of the movable block 5 is provided with the protrusion 58, the protrusion 58 is clamped in the horizontal groove or the vertical groove, when the protrusion 58 is clamped in the horizontal groove, the movable block 5 can rotate along the axis of the mounting rod 54 to implement the unfolding of the movable block 5, facilitate the mounting and dismounting of the safety rope 1; when the protrusion 58 moves to the corner of the horizontal groove and the vertical groove, the movable block 5 has been buckled in the opening at this time, in order to fix this state, the movable block 5 is pressed to make the protrusion 58 slide into the vertical groove, the rotation of the movable block 5 is limited, the movable block 5 is prevented from being opened by itself, and the closure of the opening of the shell 2 is completed.

[0063] In order to improve the stability of the protrusion 58 in the vertical groove and prevent it from being easily pulled out, the embodiment further comprises a pressure piece arranged on the mounting rod 54 and a locking piece arranged on the movable block 5.

[0064] The pressure piece comprises a fixed frame 56 sleeved on the mounting rod 54 and a pressure spring 57, the fixed frame 56 is arranged on the movable block 5, and the pressure spring 57 abuts against the top of the fixed frame 56.

[0065] The locking piece comprises a connecting pin 51 arranged on the movable block 5 and a connecting block 52 arranged on the opening, when the protrusion 58 is clamped in the vertical groove, the connecting pin 51 is arranged in the connecting block 52.

[0066] Under the action of the pressure spring 57, when the protrusion 58 is located in the vertical groove, the fixed frame 56 is directly rotated to the movable block 5 under the pressure of the pressure spring 57, so that the movable block 5 is always pressed downward by the pressure spring 57, and the stability of the protrusion 58 at the bottom end of the vertical groove is ensured. Moreover, under the action of the connecting pin 51 and the connecting block 52, when the protrusion 58 is clamped at the corner of the horizontal groove and the vertical groove, the axis of the connecting pin 51 is aligned with the axis of the through hole of the connecting block 52, and the release of the movable block 5 can make the connecting pin 51 pass through the through hole of the connecting block 52 under the pressure of the pressure spring 57, thereby improving the stability of the buckled movable block 5.

[0067] Embodiment two:

[0068] The difference between the second embodiment and the first embodiment is that the cam 34 of the pressing member is replaced by a linkage manner, as shown in Figure 6 The pressing member is a rotating block 37 and a connecting frame 35 movably arranged on the rotating block 37, the rotating block 37 is rotatably arranged on the housing 2 and connected with the handle 3, the U-shaped block 4 is provided with a rotating seat 36, and the connecting frame 35 is rotatably arranged on the rotating seat 36. The linkage of the rotating block 37 and the connecting frame 35 causes the U-shaped block 4 to move in the housing 2. Specifically, when the handle 3 is rotated clockwise, the rotating block 37 drives one end of the connecting frame 35 to move upward, and the other end of the connecting frame 35 can only move horizontally due to the limitation of the U-shaped block 4, thereby increasing the angle between the connecting frame 35 and the U-shaped block 4 to push the limiting block 41. When the handle 3 is returned under the action of the tension spring 32, the connecting frame 35 can be returned by the rotating force of the rotating block 37 to return the U-shaped block 4, thereby quickly unlocking the safety rope 1 and the housing 2.

[0069] Embodiment three:

[0070] The difference between the third embodiment and the first embodiment is that the pressure spring 57 in the pressure member is replaced by a threaded fastening manner, as shown in Figure 7 The pressure member includes a nut 59 threaded on the top end of the mounting rod 54, and the nut 59 abuts against the fixed frame 56. When the protrusion 58 on the movable block 5 moves to the bottom end of the vertical slot, the nut 59 is rotated to move downward on the threads on the top of the mounting rod 54 until the nut 59 abuts against the top of the fixed frame 56, thereby limiting the fixed frame 56 and the movable block 5 arranged thereon to prevent them from jumping, and ensuring that the protrusion 58 is always located at the bottom end of the vertical slot under the clamping of the movable block 5.

[0071] The implementation principle of the present application is that the safety hook in front of the maintenance personnel is installed in the mounting hole 31, and the movable block 5 is lifted upward, so that the protrusion 58 slides to the corner of the adjusting groove 55, then the movable block 5 is turned to open the opening of the shell 2. When the safety rope 1 is placed in the opening, the movable block 5 is reversed, so that the protrusion 58 on the movable block 5 slides in the horizontal groove until it slides to the bottom end of the vertical groove, and the movable block 5 is fixed by the action of the pressure piece. By visually observing the distance between the movable block 5, the safety rope 1 and the limiting block 41, the drive rod 44 is rotated to drive the two moving blocks 43 to move close to each other, so that one end of the adjusting rod 42 moves with the moving block 43, thereby increasing the two inner alternate angles of the adjusting rod 42, and the other end of the adjusting rod 42 pushes the limiting block 41, so that the limiting block 41 moves close to the movable block 5, reduces the distance between the limiting block 41 and the movable block 5, and makes the limiting block 41, the movable block 5 and the safety rope 1 contact. Subsequently, when the safety protection is locked to lock the position of the shell 2 on the safety rope 1, the limiting block 41 is pressed to press the safety rope 1 by the extrusion unit, and the safety rope 1 is fixed by the clamping force between the limiting block 41 and the movable block 5, so as to lock the position and prevent falling.

[0072] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and they should be covered in the scope of the claims of the present application.

Claims

1. A safety protection device for climbing tower cranes, installed on a safety rope (1), characterized in that, include: The shell (2) is U-shaped with one end open, and a movable block (5) is fastened to the opening. The safety rope (1) is located between the movable block (5) and the opening. The adjustable limiting unit includes a U-shaped block (4) slidably connected to the housing (2) and a limiting block (41) disposed on the U-shaped block (4) and an adjustable member connecting the U-shaped block (4) and the limiting block (41), the adjustable member being used to adjust the distance between the U-shaped block (4) and the limiting block (41); The extrusion unit is rotatably mounted on the housing (2) and abuts against the U-shaped block (4). When the extrusion unit rotates, it drives the U-shaped block (4) to move toward the opening of the housing (2). A locking unit is provided at the opening of the housing (2) and connected to the movable block (5), used to drive the movable block (5) to engage or disengage with the opening of the housing (2); The adjustable component includes: The drive rod (44) forms an installation channel within the U-shaped block (4), the limiting block (41) is fastened to the installation channel, and the drive rod (44) is rotatably positioned within the installation channel; The movable block (43) is slidably engaged in the mounting channel and meshes with the thread of the drive rod (44); The adjusting rod (42) is rotatably positioned between the moving block (43) and the limiting block (41), and forms an angle with the limiting block (41) and the driving rod (44). When the driving rod (44) rotates, the two internal angles of the adjusting rod (42) increase or decrease accordingly. The locking unit includes: Mounting rod (54), the opening of the housing (2) is provided with two mounting seats (53), the mounting rod (54) is located between the two mounting seats (53), and the mounting rod (54) is provided with an adjustment groove (55), the adjustment groove (55) is formed with a horizontal groove and a vertical groove; A protrusion (58) is provided in the through hole of the movable block (5) and is engaged in the horizontal or vertical groove; wherein, when the protrusion (58) is engaged in the horizontal groove, the movable block (5) is separated from the opening, and when the protrusion (58) is engaged in the vertical groove, the movable block (5) is engaged in the opening. And a pressure member provided on the mounting rod (54) and a locking member provided on the movable block (5); The extrusion unit includes: The extrusion component is a cam (34) which is rotatably mounted on the housing (2). The protrusion of the cam (34) abuts against the U-shaped block (4). A handle (3) is provided on the periphery of the housing (2) and opposite to the protrusion; the handle (3) is also provided with a mounting hole (31); and A spring-back component is used to drive the cam (34) to spring back and reset; Alternatively, the extrusion component may be a rotating block (37) and a connecting frame (35) movably disposed on the rotating block (37). The rotating block (37) is rotatably disposed on the housing (2) and connected to the handle (3). A rotating seat (36) is provided on the U-shaped block (4), and the connecting frame (35) is rotatably disposed on the rotating seat (36).

2. The safety protection device for climbing tower cranes as described in claim 1, characterized in that, The U-shaped block (4) has a slot (46) and the limiting block (41) has a locking block (45) which is slidably disposed in the slot (46).

3. The safety protection device for climbing tower cranes as described in claim 1, characterized in that, The spring is a tension spring (32). The housing (2) and the handle (3) are each provided with a pull ring (33). The tension spring (32) is located between the two pull rings (33).

4. The safety protection device for climbing tower cranes as described in claim 1, characterized in that, The pressure component includes a fixing frame (56) sleeved on the mounting rod (54) and a pressure spring (57). The fixing frame (56) is located on the movable block (5), and the pressure spring (57) abuts against the top of the fixing frame (56).

5. A safety protection device for climbing tower cranes as described in claim 4, characterized in that, The pressure component includes a nut (59) threaded to the top of the mounting rod (54), the nut (59) abutting against the fixing bracket (56).

6. A safety protection device for climbing tower cranes as described in claim 1, characterized in that, The locking component includes a connecting pin (51) provided on the movable block (5) and a connecting block (52) provided on the opening. When the protrusion (58) is engaged in the vertical groove, the connecting pin (51) passes through the connecting block (52).

Images