Anti-falling device for high-altitude ladder stand

Abstract

The utility model belongs to the technical field of high-altitude falling prevention, and provides a high-altitude crawling ladder falling prevention device which comprises a shell and a meshing mechanism. The shell is provided with a cavity, and the shell is further provided with an inlet for the safety rope to penetrate in and an outlet for the safety rope to penetrate out; the occlusion mechanism is arranged in the cavity, the occlusion mechanism comprises a fixed part fixed in the cavity and a sliding part installed in the cavity in a sliding mode, the opposite end faces of the fixed part and the sliding part form an occlusion structure, and a connecting part connected with an operator is arranged on the sliding part; the safety rope entering from the inlet bypasses the sliding piece and then penetrates out of the outlet through the gap of the meshing structure. When an operator falls from the crawling ladder, the operator suddenly falls to drive the sliding piece to move close to the fixed piece through the connecting piece so as to engage and lock the safety rope, so that the operator is fixed on the safety rope to achieve the anti-falling purpose, and the anti-falling ladder is simple in structure, low in use cost, convenient to use in places with large signal interference, such as communication towers and electric towers, and high in practicability. And the application range of the device is widened.

Description

Technical Field

[0001] The utility model relates to the technical field of high-altitude fall prevention, and particularly relates to a high-altitude ladder fall prevention device. Background Art

[0002] At present, on the outer walls or outer surfaces of tall objects such as communication towers, water towers, electric towers, and buildings, studs, ladders, and similar devices (collectively referred to as ladders below) are provided for easy climbing. When workers climb the ladder, a fall prevention device is used to ensure the safety of the workers.

[0003] For example, a Chinese patent with the application number 202323153590.5 discloses a fall prevention device for high-altitude work, including a fall prevention box, a fall prevention rope, a buckle, and a safety traction rope. A first eccentric wheel and a second eccentric wheel are installed inside the fall prevention box. Eccentric shafts are provided on both the first eccentric wheel and the second eccentric wheel. A first gear is installed at the rear end of the first eccentric wheel, and a second gear is installed at the rear end of the second eccentric wheel. A transmission seat and a motor are installed at the rear end of the fall prevention box. It monitors the instantaneous speed through a speed sensor and controls the motor to rotate a certain angle to drive the first eccentric wheel and the second eccentric wheel to deflect and lock the safety traction rope to achieve fall prevention.

[0004] Most of the existing high-altitude fall prevention devices lock the safety rope by setting multiple groups of electrical components in cooperation. They not only have a complex structure and high later maintenance costs, but also are not suitable for use in places with strong signal interference such as communication towers and electric towers, reducing the scope of use of the device. Therefore, in view of the above technical problems, a high-altitude ladder fall prevention device is proposed. Summary of the Utility Model

[0005] Aiming at the deficiencies of the existing technology, the utility model proposes a high-altitude ladder fall prevention device, which can lock the safety rope through the force generated by a sudden fall. It has a simple structure, low use cost, is suitable for use in places with strong signal interference such as communication towers and electric towers, and improves the scope of use of the device.

[0006] A high-altitude ladder fall prevention device includes:

[0007] A housing provided with a cavity, and the housing is further provided with an inlet for the safety rope to pass through and an outlet for the safety rope to pass out; and

[0008] A biting mechanism is arranged in the cavity. The biting mechanism includes a fixed part fixed in the cavity and a sliding part slidably installed in the cavity. Biting structures are formed on the opposite end faces of the fixed part and the sliding part, and a connecting part connected to the worker is arranged on the sliding part;

[0009] Wherein, the safety rope entering from the inlet bypasses the sliding part and then passes out from the outlet through the gap of the biting structure.

[0010] The beneficial effects of the above-mentioned high-altitude ladder anti-fall device are:

[0011] By fixing one end of the safety rope near the top of the ladder and extending the other end to the ground, the operator is connected to the connecting piece through a safety belt. At this time, the operator can climb the ladder and drive the device to move along the safety rope. When the operator falls from the ladder, the operator falls sharply and drives the sliding piece to move close to the fixed piece through the connecting piece. The sliding piece moves close to the fixed piece to bite and lock the safety rope, thereby fixing the operator on the safety rope to achieve the purpose of falling prevention. It has a simple structure and low cost of use. It is easy to use in places with large signal interference such as communication towers and electric towers, which increases the scope of use of the device.

[0012] In one embodiment, the housing includes a frame forming the cavity and a cover for closing the cavity. The housing is assembled, which facilitates the insertion of the safety rope into the gap between the housing and the engaging structure, and the housing and the safety rope are easy to assemble.

[0013] In one embodiment, the housing is further provided with a locking mechanism, which is used to fix the sliding member after the sliding member and the fixing member are engaged. By providing a locking mechanism to fix the sliding member after the sliding member and the fixing member are engaged and locked to the safety rope, the stability of the engaged and locked safety rope can be improved.

[0014] In one embodiment, the housing is provided with a connecting slide groove and a lock groove, the sliding member is provided with a lock rod inserted into the slide groove, and the locking mechanism includes a telescopic component, and the telescopic component is used to extend and close the lock groove opening after the lock rod slides into the lock groove. When the sliding member slides and engages with the fixing member to lock the safety rope, the sliding member drives the lock rod to move from the slide groove to the lock groove. At this time, the telescopic component extends and closes the lock groove opening to fix the lock rod in the lock groove, thereby fixing the sliding member, and fixing the sliding member is convenient.

[0015] In one embodiment, the telescopic assembly includes a stopper and a first elastic member; a mounting groove connected to the slide groove is provided in the housing, the stopper is slidably mounted in the mounting groove through the first elastic member, one end of the stopper abuts against the lock rod, and the first elastic member is used to drive the stopper to slide into the slide groove and close the lock groove opening after the lock rod slides into the lock groove. When the lock rod slides into the lock groove, the lock rod cancels the interference with the stopper, and at this time, the first elastic member can drive the stopper to slide into the slide groove to close the lock groove opening and fix the lock rod in the lock groove, and fixing the lock rod is convenient and fast.

[0016] In one embodiment, a friction assembly is provided on the housing. The friction assembly is used to increase or decrease the friction between the safety rope and the sliding member. By adjusting the friction between the safety rope and the sliding member, the force required for the traction device to slide along the safety rope when the operator climbs the ladder can be adjusted according to requirements, which is convenient for different operators to use. It can be understood that the greater the friction between the safety rope and the sliding member, the greater the force required for the traction device to slide along the safety rope. Conversely, the smaller the friction between the safety rope and the sliding member, the smaller the force required for the traction device to slide along the safety rope.

[0017] In one embodiment, the friction assembly includes a clamping plate and an adjusting knob; the clamping plate is slidably disposed in the cavity and cooperates with the sliding member to form a friction gap. The safety rope passes through the friction gap. The adjusting knob is threadedly connected to the housing, and one end thereof is rotatably connected to the clamping plate. By rotating the adjusting knob, the clamping plate can be driven to move closer to the sliding member. When the clamping plate moves closer to the sliding member, the friction gap can be reduced, thereby increasing the friction between the safety rope and the sliding member. Conversely, by rotating the adjusting knob in the reverse direction, the clamping plate can be driven to move away from the sliding member. When the clamping plate moves away from the sliding member, the friction gap can be increased, thereby reducing the friction between the safety rope and the sliding member. It is convenient to adjust the friction between the safety rope and the sliding member.

[0018] In one embodiment, the engaging mechanism further includes a second elastic member; the second elastic member is respectively connected to the sliding member and the housing, and the second elastic member is used to apply a pulling force to the sliding member away from the fixing member. By providing the second elastic member, the sliding member can be prevented from moving closer to the fixing member under the action of gravity and engaging and locking the safety rope, and the phenomenon of engaging and locking the safety rope when the operator climbs the ladder can be avoided.

[0019] In one embodiment, the engaging structure includes an engaging block and an engaging groove; the fixing member and the sliding member are alternatively provided with the engaging block, and the other is provided with the engaging groove, and the engaging block can be inserted into the engaging groove. By providing the cooperation of the engaging block and the engaging groove, the engaging contact area and the engaging pressure between the sliding member and the fixing member when engaging the safety rope can be increased, thereby improving the stability of the device for engaging the safety rope.

[0020] In one embodiment, the connecting member includes a binding buckle; a through groove communicating with the outside and the cavity is provided on the housing, and the binding buckle passes through the through groove and is connected to the operator. By passing the safety belt through the binding buckle and binding it to the operator, the connection between the device and the operator can be completed, and the connection between the device and the operator is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] To more clearly illustrate the specific embodiments of the present utility model, the following will briefly introduce the drawings required for the specific embodiments. In all the drawings, the elements or parts are not necessarily drawn to actual scale.

[0022] Figure 1 Schematic diagram of the three-dimensional structure of an anti-falling device for an aerial ladder provided in an embodiment of the present utility model;

[0023] Figure 2 For Figure 1 The front view of the cover body of an anti-falling device for an aerial ladder shown after being disassembled;

[0024] Figure 3 For Figure 1 Exploded view of some components of an anti-falling device for an aerial ladder shown;

[0025] Figure 4 For Figure 1 Schematic diagram of the three-dimensional structure of the locking mechanism in an anti-falling device for an aerial ladder shown;

[0026] Figure 5 For Figure 1 Rear view of the locking mechanism in an anti-falling device for an aerial ladder shown in the locked state.

[0027] Reference numerals:

[0028] 1. Safety rope;

[0029] 10. Housing; 101. Frame; 102. Cover body; 103. Cavity; 104. Entrance; 105. Exit; 106. Slide groove; 107. Lock groove; 108. Installation groove; 109. Through groove;

[0030] 20. Fixing member; 201. Sliding member; 202. Connecting member; 203. Locking rod; 204. Second elastic member; 205. Biting block; 206. Biting groove;

[0031] 30. Stopping member; 301. First elastic member;

[0032] 40. Clamping plate; 401. Adjusting knob. Specific embodiments

[0033] The following will describe in detail the embodiments of the technical solution of the present utility model in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present utility model, and therefore are only examples and cannot be used to limit the protection scope of the present utility model.

[0034] Please refer to Figures 1 to 3 , an anti-falling device for an aerial ladder in an embodiment includes a housing 10 and a biting mechanism.

[0035] Among them, the housing 10 is provided with a cavity 103. The housing 10 is also provided with an entrance 104 for the safety rope 1 to penetrate into and an exit 105 for the safety rope 1 to penetrate out. The biting mechanism is arranged in the cavity 103. The biting mechanism includes a fixing member 20 fixed in the cavity 103 and a sliding member 201 slidably installed in the cavity 103. The opposite end faces of the fixing member 20 and the sliding member 201 form a biting structure. A connecting member 202 connected to the operator is arranged on the sliding member 201. After the safety rope 1 entering from the entrance 104 bypasses the sliding member 201, it passes through the gap of the biting structure and exits from the exit 105.

[0036] In the above embodiment, during use, one end of the safety rope 1 is fixed near the top of a ladder (not shown in the figure), and the other end extends to the ground. The operator is connected to the connecting member 202 through a safety belt. At this time, the operator can climb the ladder and drive the housing 10 to move frictionally along the safety rope 1. When the operator falls from the ladder, the rapid fall of the operator drives the sliding member 201 to move closer to the fixing member 20 through the connecting member 202. When the sliding member 201 moves closer to the fixing member 20, it can bite and lock the safety rope 1, thereby fixing the operator on the safety rope 1 to achieve the purpose of anti-fall. Its structure is simple, the use cost is low, it is convenient to use in places with large signal interference such as communication towers and electric towers, and the use range of the device is improved.

[0037] On the basis of the above embodiment, further, the housing 10 includes a frame body 101 forming the cavity 103 and a cover body 102 for closing the cavity 103. The housing 10 is assembled, which is convenient for threading the safety rope 1 into the gap between the housing 10 and the biting structure, and the assembly of the housing 10 and the safety rope 1 is convenient.

[0038] On the basis of the above embodiment, further, the biting structure includes a biting block 205 and a biting groove 206; either the fixing member 20 or the sliding member 201 is provided with a biting block 205, and the other is provided with a biting groove 206. The biting block 205 can penetrate into the biting groove 206. By setting the cooperation of the biting block 205 and the biting groove 206, the sliding member 201 and the fixing member 20 can increase the biting contact area and biting pressure with the safety rope 1 when biting the safety rope 1, thereby improving the stability of the device for biting the safety rope 1.

[0039] On the basis of the above embodiment, further, the connecting member 202 includes a binding buckle; a through groove 109 communicating with the outside and the cavity 103 is opened on the housing 10, and the binding buckle passes through the through groove 109 and is connected to the operator. By passing the safety belt through the binding buckle and binding it to the operator, the connection between the device and the operator can be completed, and the connection between the device and the operator is convenient.

[0040] Please refer to Figure 2 、 Figure 3In one embodiment, the engaging mechanism further includes a second elastic member 204; the second elastic member 204 is respectively connected to the sliding member 201 and the housing 10, and the second elastic member 204 is used to apply a pulling force to the sliding member 201 away from the fixing member 20. Specifically, the second elastic member 204 is a tension spring.

[0041] In the above embodiment, the second elastic member 204 can be provided to prevent the sliding member 201 from moving closer to the fixing member 20 under the action of gravity to bite and lock the safety rope 1, thereby preventing the safety rope 1 from being bitten and locked when the operator climbs the ladder.

[0042] See also Figures 3 to 5 In one embodiment, a locking mechanism is further provided on the housing 10, and the locking mechanism is used to fix the sliding member 201 after the sliding member 201 is engaged with the fixing member 20. By providing a locking mechanism to fix the sliding member 201 after the sliding member 201 is engaged with the fixing member 20 to lock the safety rope 1, the stability of the engaged and locked safety rope 1 can be improved.

[0043] On the basis of the above embodiment, further, a connecting slide groove 106 and a lock groove 107 are provided in the shell 10, and a locking rod 203 is provided on the sliding member 201 and penetrates into the slide groove 106. The locking mechanism includes a telescopic component, and the telescopic component is used to extend and close the opening of the lock groove 107 after the locking rod 203 slides into the lock groove 107.

[0044] When the sliding member 201 slides and engages with the fixing member 20 to lock the safety rope 1, the sliding member 201 drives the locking rod 203 to move from the sliding groove 106 to the locking groove 107. At this time, the telescopic component extends to close the opening of the locking groove 107 to fix the locking rod 203 in the locking groove 107, thereby fixing the sliding member 201, which is convenient for fixing the sliding member 201.

[0045] On the basis of the above embodiment, the telescopic assembly further includes a stopper 30 and a first elastic member 301; the housing 10 is provided with a mounting groove 108 connected to the slide groove 106, the stopper 30 is slidably mounted in the mounting groove 108 through the first elastic member 301, one end of the stopper 30 abuts against the lock rod 203, and the first elastic member 301 is used to drive the stopper 30 to slide into the slide groove 106 to close the opening of the lock groove 107 after the lock rod 203 slides into the lock groove 107. Specifically, the first elastic member 301 is a spring.

[0046] When the locking rod 203 slides into the locking groove 107, the locking rod 203 eliminates the interference with the stopper 30. At this time, the first elastic member 301 can drive the stopper 30 to slide into the sliding groove 106 to close the opening of the locking groove 107 and fix the locking rod 203 in the locking groove 107. Fixing the locking rod 203 is convenient and fast.

[0047] See also Figure 2 and Figure 3, In one embodiment, a friction assembly is provided on the housing 10. The friction assembly is used to increase or decrease the friction between the safety rope 1 and the sliding member 201. Specifically, the friction assembly includes a clamping plate 40 and an adjustment knob 401; the clamping plate 40 is slidably disposed in the cavity 103 and cooperates with the sliding member 201 to form a friction gap. The safety rope 1 passes through the friction gap. The adjustment knob 401 is threadedly connected to the housing 10, and one end is rotatably connected to the clamping plate 40.

[0048] In the above embodiment, by rotating the adjustment knob 401, the clamping plate 40 is driven to move closer to the sliding member 201. When the clamping plate 40 moves closer to the sliding member 201, the friction gap can be reduced, thereby increasing the friction between the safety rope 1 and the sliding member 201. Conversely, by rotating the adjustment knob 401 in the reverse direction, the clamping plate 40 can be driven to move away from the sliding member 201. When the clamping plate 40 moves away from the sliding member 201, the friction gap can be increased, thereby reducing the friction between the safety rope 1 and the sliding member 201. It is convenient to adjust the friction between the safety rope 1 and the sliding member 201. By adjusting the friction between the safety rope 1 and the sliding member 201, the force required for the traction device to slide along the safety rope 1 when the operator climbs the ladder can be adjusted according to needs, which is convenient for different operators to use. It can be understood that the greater the friction between the safety rope 1 and the sliding member 201, the greater the force required for the traction device to slide along the safety rope 1. Conversely, the smaller the friction between the safety rope 1 and the sliding member 201, the smaller the force required for the traction device to slide along the safety rope 1.

[0049] Specifically in the above embodiment, a rotating block is provided at the end of the adjustment knob 401, and a rotating groove is formed on the clamping plate 40. The rotating block is rotatably disposed in the rotating groove.

[0050] The specific implementation manner of the above anti-falling device for an aerial ladder is as follows:

[0051] Before climbing the ladder, one end of the safety rope 1 is fixed near the top of the ladder, and the other end extends to the ground. Then, the safety belt is passed through the binding buckle and bound to the operator to complete the connection with the device. Then, by rotating the adjustment knob 401, the clamping plate 40 is driven to move closer to or away from the sliding member 201 to adjust the friction between the safety rope 1 and the sliding member 201, so that the operator can move the traction device along the safety rope 1 when climbing the ladder.

[0052] When the operator falls from the ladder during the process of climbing the ladder, the rapid fall of the operator drives the sliding member 201 to move closer to the fixing member 20 through the binding buckle. When the sliding member 201 moves closer to the fixing member 20, the engaging block 205 can be inserted into the engaging groove 206 to lock and fix the safety rope 1, thereby fixing the operator on the safety rope 1 to achieve the purpose of anti-falling. Its structure is simple, the use cost is low, and it is convenient to use in places with large signal interference such as communication towers and electric towers, improving the use range of the device.

[0053] Meanwhile, the sliding member 201 drives the locking rod 203 to move from the sliding groove 106 into the locking groove 107. The first elastic member 301 drives the stopper 30 to slide into the sliding groove 106 to close the opening of the locking groove 107 and fix the locking rod 203 in the locking groove 107, improving the stability of the bite-lock safety rope 1 and further enhancing the anti-falling effect.

[0054] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of the present invention, and they should all be covered within the scope of the claims and the description of the present invention.

Claims

1. An anti-falling device for high-altitude ladders, characterized in that, Comprising: A housing (10) provided with a cavity (103), the housing (10) further provided with an inlet (104) for a safety rope (1) to pass through and an outlet (105) for the safety rope (1) to pass out; and A biting mechanism disposed within the cavity (103), the biting mechanism including a fixed member (20) fixed within the cavity (103) and a sliding member (201) slidably mounted within the cavity (103), opposite end faces of the fixed member (20) and the sliding member (201) forming a biting structure, and a connecting member (202) connected to an operator provided on the sliding member (201); Wherein, the safety rope (1) entering through the inlet (104) bypasses the sliding member (201) and then passes out through the outlet (105) through a gap of the biting structure.

2. The anti-falling device for high-altitude ladders according to claim 1, characterized in that, The housing (10) includes a frame body (101) forming the cavity (103) and a cover body (102) for closing the cavity (103).

3. The anti-falling device for high-altitude ladders according to claim 1, characterized in that, The housing (10) is further provided with a locking mechanism for fixing the sliding member (201) after the sliding member (201) bites with the fixed member (20).

4. The anti-falling device for high-altitude ladders according to claim 3, characterized in that, A communicating chute (106) and a locking groove (107) are provided within the housing (10), a locking rod (203) penetrating into the chute (106) is provided on the sliding member (201), and the locking mechanism includes a telescopic assembly for elongating to close an opening of the locking groove (107) after the locking rod (203) slides into the locking groove (107).

5. The anti-falling device for high-altitude ladders according to claim 4, characterized in that, The telescopic assembly includes a stopper (30) and a first elastic member (301); an installation groove (108) communicating with the chute (106) is provided within the housing (10), the stopper (30) is slidably mounted within the installation groove (108) through the first elastic member (301), one end of the stopper (30) abuts against the locking rod (203), and the first elastic member (301) is used to drive the stopper (30) to slide into the chute (106) to close the opening of the locking groove (107) after the locking rod (203) slides into the locking groove (107).

6. The anti-falling device for high-altitude ladders according to claim 1, characterized in that, A friction assembly is provided on the housing (10) for increasing or decreasing the friction between the safety rope (1) and the sliding member (201).

7. The anti-falling device for high-altitude ladders according to claim 6, characterized in that, The friction assembly includes a clamping plate (40) and an adjusting knob (401); the clamping plate (40) is slidably disposed within the cavity (103) and cooperates with the sliding member (201) to form a friction gap, the safety rope (1) passes through the friction gap, the adjusting knob (401) is threadedly connected to the housing (10) and one end thereof is rotatably connected to the clamping plate (40).

8. The anti-falling device for high-altitude ladders according to claim 1, characterized in that, The biting mechanism further includes a second elastic member (204); the second elastic member (204) is respectively connected to the sliding member (201) and the housing (10), and the second elastic member (204) is used to apply a pulling force to the sliding member (201) away from the fixed member (20).

9. The anti-falling device for high-altitude ladders according to claim 1, wherein, The occluding structure includes an occluding block (205) and an occluding groove (206); either the fixing member (20) or the sliding member (201) is provided with the occluding block (205), and the other is provided with the occluding groove (206), and the occluding block (205) can be inserted into the occluding groove (206).

10. The anti-falling device for high-altitude ladders according to claim 1, characterized in that, The connecting member (202) includes a binding buckle; a through groove (109) communicating with the outside and the cavity (103) is formed on the housing (10), and the binding buckle passes through the through groove (109) to be connected to the operator.

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