Anti-inclination and anti-falling safety lock for aerial work platform

Abstract

The utility model relates to an anti-inclination and anti-falling safety lock for an aerial work platform, which belongs to the technical field of safety locks and comprises a lower mounting plate, a mounting seat, a first support plate, a safety lock damping component, a safety lock triggering component, a safety lock resetting component, a safety lock braking component, a first baffle and a second baffle. According to the anti-inclination and anti-falling safety lock for the aerial work platform, due to the fact that the safety lock device is an integrated device and is connected to the bottom of the platform through bolts, mounting, dismounting and overhauling are convenient, the anti-inclination angle and the braking distance of the safety lock can be adjusted and set according to specific products and use requirements, after the safety lock device is started, resetting operation is simple, and the safety lock device is convenient to use. The safety lock device can be reset smoothly by pulling the pull rod without detaching the device, potential safety hazards caused by high-altitude maintenance and operation are avoided, meanwhile, the four rubber springs effectively reduce the sliding impact force of the platform, abrasion of the safety rope is greatly protected, the structure is simple, and the cost of batch production is low.

Description

Technical Field

[0001] The utility model relates to the technical field of safety locks, in particular to a safety lock for preventing tilting and falling of an aerial work platform. Background Technique

[0002] In recent years, aerial work platforms have been popularized and used in the domestic market. Whether it is nuclear power prestressed construction or super high-rise building construction, safety devices are particularly important.

[0003] For an aerial work platform, its safety lock device for preventing tilting and falling is a very important safety device. It has the function of restricting the platform from running at high speed and falling, and can also prevent overturning caused by tilting at one end, and can prevent falling accidents caused by the failure of climbing power or other unexpected situations. This function of the safety lock can effectively guarantee the life safety of operators.

[0004] The existing anti-falling devices for work platforms have a relatively complex structure, are inconvenient for installation and maintenance, and have complex operations, presenting technical problems. Therefore, a safety lock for preventing tilting and falling of an aerial work platform is proposed. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a safety lock for preventing tilting and falling of an aerial work platform, which has the advantages of ensuring safety, being simpler to operate than general anti-falling devices, and being more suitable for platforms in different scenarios, and solves the problems of relatively complex structure, inconvenient installation and maintenance, complex operation, and existing technical problems.

[0006] To achieve the above object, the utility model provides the following technical solution: A safety lock for preventing tilting and falling of an aerial work platform, including a lower mounting plate, a mounting seat, a first support plate, a safety lock shock absorption component, a safety lock trigger component, a safety lock reset component, a safety lock braking component, and a baffle;

[0007] The safety lock shock absorption component includes a connecting rod fixedly installed between the lower mounting plate and the mounting seat. A rubber spring is sleeved on the connecting rod, and the connecting rod is installed on the lower mounting plate and the mounting seat through nuts;

[0008] The safety lock trigger component includes a spring pull plate component installed on the baffle. One end of the spring pull plate component is connected to a connecting rope, and the other end of the spring pull plate component is installed on the baffle through a torsion spring;

[0009] The safety lock reset component includes a support block hinged on the baffle. A reset rod is hinged on the baffle. One end of the reset rod is rotatably installed with a pull rod, and the other end of the reset rod is hinged with a reset positioning shaft. The reset positioning shaft passes through the support block. By pulling the pull rod to drive the movement of the reset positioning shaft, the reset positioning shaft presses against the first support plate, thereby completing the reset;

[0010] The safety lock braking assembly includes two rope pressing blocks located on the baffle. The baffle is hinged with a first support plate and a second support plate. The outer walls of the first support plate and the second support plate are hinged with a pressing block through a steel rope pressing block shaft. The steel rope pressing block shaft passes through one side of the rope pressing block, and the pressing block is also hinged with the rope pressing block on the other side. By rotating the first support plate and the second support plate clockwise, the two rope pressing blocks are driven to clamp the safety rope.

[0011] Preferably, a limiting groove is formed on one side of the second support plate close to the lower mounting plate, and the spring pull plate assembly is clamped inside the limiting groove.

[0012] Preferably, the safety rope passes through the mounting seat and the lower mounting plate and is located between the two rope pressing blocks.

[0013] Preferably, a locking block and a spring hanging ear are installed on the outer wall of the baffle.

[0014] Preferably, there are two connecting rods, and several rubber springs are sleeved on each connecting rod.

[0015] Preferably, two rubber springs are sleeved on each connecting rod.

[0016] Compared with the prior art, the technical solution of the present application has the following beneficial effects:

[0017] The anti-tilt and anti-fall safety lock for the aerial work platform, since the safety lock device is an integrated device, is connected to the bottom of the platform by bolts, which is convenient for installation, disassembly and maintenance. The anti-tilt angle and braking distance of the safety lock can be adjusted according to specific products and usage requirements. After the safety lock device is activated, the reset operation is simple. There is no need to disassemble the device, and the safety lock device can be smoothly reset by pulling the pull rod, avoiding the safety hazards brought by high-altitude maintenance and operation. At the same time, the four rubber springs effectively reduce the impact force of the platform sliding down, greatly protecting the wear of the safety rope. The structure is simple and the batch production cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the present invention;

[0019] In the figure:

[0020] 1. Lower mounting plate; 2. Mounting seat; 3. Rubber spring; 4. First support plate; 6. Second support plate; 7. First baffle; 8. Second baffle; 9. Support block; 10. Locking block; 11. Pressing block; 12. Reset rod; 13. Pull rod; 14. Spring pull plate assembly; 15. Reset positioning shaft; 16. Rotating shaft pin; 17. Reset positioning sleeve; 21. Spring hanging ear. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1 , a safety lock for preventing tilting and falling of an aerial work platform in this embodiment, includes a lower mounting plate 1, a mounting seat 2, a first support plate 4, a safety lock shock absorption assembly, a safety lock trigger assembly, a safety lock reset assembly, a safety lock braking assembly and a baffle. The baffle is composed of a first baffle 7 and a second baffle 8. When the platform descends rapidly, tilts beyond a certain range or the rope breaks, the safety lock can quickly lock the safety wire rope, reduce the impact force generated by the fall, prevent the continued fall of this end of the platform, and bear the weight of the platform.

[0023] The safety lock shock absorption assembly includes four rubber springs 3 and connecting rods fixedly installed between the lower mounting plate 1 and the mounting seat 2. Rubber springs are sleeved on the connecting rods. The connecting rods are installed on the lower mounting plate and the mounting seat through nuts. Four washers are movably installed on the outer wall of the lower mounting plate 1. The cooperation of the nuts and the washers limits the rubber springs. The safety lock shock absorption assembly is located between the lower mounting plate 1 and the mounting seat 2, and the rubber springs 3 effectively reduce the impact force of the working platform on the safety wire rope.

[0024] The safety lock trigger assembly includes a spring pull plate assembly 14 installed on the outer walls of the opposite sides of the first baffle 7 and the second baffle 8. Three spring hanging ears 21 are movably installed on the outer walls of the opposite sides of the first baffle 7 and the second baffle 8. A limiting groove is opened on the side of the second support plate 6 close to the lower mounting plate 1. The spring pull plate assembly 14 is clamped inside the limiting groove and is of a suitable size. Locking blocks 10 and spring hanging ears 21 are installed on the outer walls of the first baffle 7 and the second baffle 8.

[0025] The safety lock reset assembly includes a support block 9 movably installed on the outer walls of the opposite sides of the first baffle 7 and the second baffle 8. Reset rods 12 are installed at the bottoms of the first baffle 7 and the second baffle 8. A pull rod 13 is rotatably installed on the front outer wall of the reset rod 12. A reset positioning shaft 15 is movably installed inside the support block 9. A reset positioning sleeve 17 is sleeved on the outer peripheral wall of the reset positioning shaft 15, and the reset positioning sleeve 17 is hinged to the reset rod 12.

[0026] The safety lock braking assembly includes two rope pressing blocks installed between the first baffle 7 and the second baffle 8. On the outer walls of the opposite sides of the first baffle 7 and the second baffle 8, second support plates 6 are fixedly hinged. Inside the spring hanging ear 21, two locking blocks 10 are installed. On the outer walls of the first support plate 4 and the second support plate 6, pressing blocks 11 are movably installed. The first support plate 4 is equipped with a rotating shaft pin 16. A steel rope pressing block shaft is installed between the first baffle 7 and the second baffle 8. Both the first support plate 4 and the second support plate 6 are connected to the rope pressing blocks.

[0027] When the spring pull plate assembly 14 receives the spring tension, the spring pull plate assembly 14 disengages from the second support plate 6, and the rope pressing block connected to the second support plate 6 translates to firmly press the safety rope.

[0028] The working principle of the above embodiment is as follows:

[0029] When the platform tilts beyond a certain range or the rope breaks, the spring pull plate assembly 14 is subjected to the tension of the connecting rope, causing the spring pull plate assembly 14 stuck in the limit slot of the second support plate 6 to rotate counterclockwise around the axis, and the safety lock starts to work. The second support plate 6 loses the limit of the spring pull plate assembly 14, and the two components of the safety rope and the safety lock move in opposite directions. The safety rope drives the rope pressing block to translate by friction, so that the rope pressing block firmly presses the safety rope. During the process of the platform sliding down at high speed, the mounting seat 2 connected to the bottom of the platform presses the rubber spring 3. The four rubber springs 3 reduce the strong impact force generated when the platform tilts or slides down through the reaction force. After the maintenance is completed and the platform is in a stable state, the spring pull plate assembly 14 returns to its original position, pulls the pull rod 13, and the pull rod 13 drives the reset rod 12 to make the first support plate 4 return to the initial position, so that the second support plate 6 is reset, and then the spring pull plate assembly 14 catches the second support plate 6 to complete the reset.

[0030] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0031] Although embodiments of the present utility model have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present utility model. The scope of the present utility model is defined by the appended claims and their equivalents.

Claims

1. A safety lock for preventing tilting and falling for aerial work platforms, characterized in that: It comprises a lower mounting plate (1), a mounting seat (2), a first bracket plate (4), a safety lock shock absorbing assembly, a safety lock trigger assembly, a safety lock reset assembly, a safety lock brake assembly and a baffle; The safety lock shock-absorbing assembly comprises a connecting rod fixedly mounted between the lower mounting plate (1) and the mounting seat (2), a rubber spring (3) being sleeved on the connecting rod, and the connecting rod being mounted on the lower mounting plate (1) and the mounting seat (2) via a nut; The safety lock trigger assembly comprises a spring pull plate assembly (14) mounted on the baffle, one end of the spring pull plate assembly (14) is connected to the connecting rope, and the other end of the spring pull plate assembly (14) is mounted on the baffle via a torsion spring; The safety lock reset assembly comprises a support block (9) hinged on the baffle plate, a reset rod (12) hinged on the baffle plate, a pull rod (13) rotatably mounted on one end of the reset rod (12), a reset positioning shaft (15) hinged on the other end of the reset rod (12), the reset positioning shaft (15) passes through the support block (9), and the reset positioning shaft (15) is driven to move by pulling the pull rod (13), and the reset positioning shaft (15) presses against the first bracket plate (4), thereby completing the reset; The safety lock brake assembly comprises two rope pressing blocks located on the baffle plate, wherein the baffle plate is hinged with a first bracket plate (4) and a second bracket plate (6), and the outer walls of the first bracket plate (4) and the second bracket plate (6) are hinged with a pressing block (11) via a steel rope pressing block axis, and the steel rope pressing block axis passes through the rope pressing block on one side, and the pressing block (11) is hinged with the rope pressing block on the other side at the same time, and rotates clockwise through the first bracket plate (4) and the second bracket plate (6), thereby driving the two rope pressing blocks to clamp the safety rope.

2. The anti-tilt and anti-fall safety lock for aerial work platforms according to claim 1, characterized in that: A limiting groove is provided on one side of the second bracket plate (6) close to the lower mounting plate (1), and the spring pull plate assembly (14) is clamped inside the limiting groove.

3. The anti-tilt and anti-fall safety lock for aerial work platforms according to claim 1, characterized in that: The safety rope passes through the mounting seat and the lower mounting plate and is located between the two rope pressing blocks.

4. The anti-tilt and anti-fall safety lock for aerial work platforms according to claim 1, characterized in that: A locking block (10) and a spring hanging ear (21) are installed on the outer wall of the baffle.

5. The anti-tilt and anti-fall safety lock for aerial work platforms according to claim 1, characterized in that: There are two connecting rods, and each connecting rod is sleeved with a plurality of rubber springs (3).

6. The anti-tilt and anti-fall safety lock for aerial work platforms according to claim 5, characterized in that: Each connecting rod is sleeved with two rubber springs (3).

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