Convenient-to-assemble safety protection device for elevator

Abstract

The safety protection device comprises an elevator body and a working platform, four first threaded holes are formed in the four corners of the surface of the working platform, supporting rods are in threaded connection with the interiors of the first threaded holes, and supporting sleeves are slidably connected with the outer surfaces of the supporting rods; the outer surface of the lower end of the supporting sleeve is fixedly connected with a U-shaped limiting frame, the U-shaped limiting frame can be connected with the left end and the right end of the working platform in a matched and clamped mode, a second threaded hole is formed in the lower surface of the U-shaped limiting frame, and the outer surface of the supporting sleeve is fixedly connected with a horizontal reinforcing rod and a protection rod. The supporting rods are screwed into the first threaded holes and the second threaded holes, fixing of the supporting rods, the supporting sleeves and the U-shaped limiting frames can be achieved, assembling is convenient and fast, the fixing effect of the supporting rods and the supporting sleeves can be improved, limiting is conducted through the U-shaped limiting frames, the supporting rods are not prone to skewing, and the service life of the supporting rods is prolonged. Therefore, the thread part at the lower end of the supporting rod is effectively prevented from being broken.

Description

Technical Field

[0001] The utility model relates to the technical field of safety protection of elevators, in particular to a safety protection device for elevators which is convenient for assembly. Background Technique

[0002] A straight-arm elevator is a mechanical device used for high-altitude operations. It can lift workers and tools to a certain height for construction, maintenance or other related work. A straight-arm elevator usually consists of a chassis, a telescopic arm, a working platform, etc. Its characteristic is that the boom can be lifted vertically and can also be extended horizontally, with a large working range and flexibility.

[0003] Generally, a safety protection device is fixedly installed on the surface of the working platform through bolts. However, the bolts fixing the safety protection device are very easy to break, thus generating potential safety hazards. Moreover, the safety protection device generally has only one safety protection measure, and the protection effect is poor. Therefore, it needs to be improved. Content of the Utility Model

[0004] The purpose of the utility model is to provide a safety protection device for elevators which is convenient for assembly, so as to solve the problems put forward in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A safety protection device for elevators which is convenient for assembly, including an elevator body and a working platform. Four first threaded holes are opened at the four corners of the surface of the working platform. A support rod is threadedly connected in the first threaded hole. A support sleeve is slidably connected to the outer surface of the support rod. A U-shaped limit frame is fixedly connected to the lower outer surface of the support sleeve, and the U-shaped limit frame can be mutually engaged and clamped with the left and right ends of the working platform. A second threaded hole is opened on the lower surface of the U-shaped limit frame, and the second threaded hole can be threadedly connected to the lower end of the support rod. Horizontal reinforcing rods and protective rods are respectively fixedly connected to the outer surface of the support sleeve. A door frame plate is fixedly connected to the outer surface of the horizontal reinforcing rod. A protective door is rotatably connected to the outer surface of the support sleeve close to the door frame plate.

[0006] Preferably, an external thread is provided on the lower outer surface of the support rod, and a hexagonal knob is fixedly connected to the upper end of the support rod.

[0007] Preferably, the horizontal reinforcing rod is a hollow steel pipe.

[0008] Preferably, the number of the protective rods is multiple, and the multiple protective rods are fixedly welded to the outer surface of the support sleeve in a zigzag shape.

[0009] Preferably, the back side of the door frame plate is fixedly connected with a plurality of support blocks, the back side of the protective door is fixedly connected with a plurality of positioning blocks of the same height as the support blocks, the surface of the support block is slidably connected with a shaft rod, the outer surface of the shaft rod is fixedly connected with an arm rod, the lower surface of the arm rod is fixedly connected with a latch pin, the surface of the positioning block is provided with a socket that can fit with the latch pin, the lower end of the shaft rod is fixedly connected with a baffle plate, and a spring sleeved on the outer surface of the shaft rod is provided between the baffle plate and the support block.

[0010] Preferably, a side surface of the door frame plate is fixedly connected to a limiting plate.

[0011] Preferably, a connecting ring is fixedly connected to the outer surface of the horizontal reinforcement rod, a safety rope is bound and fixed to the surface of the connecting ring, and one end of the safety rope away from the connecting ring is fixedly connected to a waist fixing strap.

[0012] Beneficial Effects

[0013] The utility model provides a safety protection device for a lift that is easy to assemble and has the following beneficial effects:

[0014] 1. The safety protection device for a lift which is easy to assemble, by providing a support rod, a support sleeve and a U-shaped limit frame, can fix the support rod, the support sleeve and the U-shaped limit frame by screwing the support rod into the first threaded hole and the second threaded hole. The assembly is convenient and quick, and the U-shaped limit frame is fitted and snapped on both ends of the working platform, which can improve the fixing effect of the support rod and the support sleeve. Moreover, the U-shaped limit frame is used for limiting, so that the support rod is not easy to be skewed, thereby effectively avoiding the breakage of the threaded portion at the lower end of the support rod and improving the service life of the protection device.

[0015] 2. This easy-to-assemble safety protection device for elevators can close the protection door by inserting the pin into the socket of the positioning block. The spring is used to apply elastic force to the baffle, so that the shaft rod drives the arm rod to move downward, effectively preventing the pin from being separated from the socket of the positioning block, thereby making the protection door safer to use.

[0016] 3. The easy-to-assemble safety protection device for elevators can form a frame-shaped protection structure by arranging multiple supporting sleeves, horizontal reinforcement rods and protection rods, thereby providing preliminary protection for the workers. By arranging connecting rings, safety ropes and waist fixing straps, and by tying and fixing the waist fixing straps around the waist of the workers, the workers can be limited in position, thereby further improving the protection effect and improving the safety during high-altitude operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the overall structure of a safety protection device for a lift that is easy to assemble, as proposed by the utility model;

[0018] Figure 2 Schematic three-dimensional structure diagram of the working platform of a safety protection device for a lift that is convenient for assembly proposed by the present utility model;

[0019] Figure 3 Schematic connection structure diagram of the U-shaped limit frame and the support rod of a safety protection device for a lift that is convenient for assembly proposed by the present utility model;

[0020] Figure 4 Rear view structure diagram of the protection door of a safety protection device for a lift that is convenient for assembly proposed by the present utility model.

[0021] In the figure: 1, lift body; 2, working platform; 3, support rod; 4, support sleeve; 5, U-shaped limit frame; 6, horizontal reinforcement rod; 7, protection rod; 8, door frame plate; 9, protection door; 10, support block; 11, positioning block; 12, shaft rod; 13, arm rod; 14, bolt; 15, jack; 16, baffle; 17, spring; 18, limit plate; 19, connecting ring; 20, safety rope; 21, waist fixing strap. Specific implementation manners

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described 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. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] Please refer to Figures 1-4, the present utility model provides a technical solution: a safety protection device for a lift that is easy to assemble, including a lift body 1 and a working platform 2. The working platform 2 is fixedly installed at the lifting end of the lift body 1 by bolts. Four first threaded holes are opened at the four corners of the surface of the working platform 2. A support rod 3 is threadedly connected in the first threaded hole. A support sleeve 4 is slidably connected to the outer surface of the support rod 3. A U-shaped limit frame 5 is fixedly connected to the lower outer surface of the support sleeve 4, and the U-shaped limit frame 5 can be fitted and clamped with the left and right ends of the working platform 2. A second threaded hole is opened on the lower surface of the U-shaped limit frame 5, and the second threaded hole can be threadedly connected to the lower end of the support rod 3. A horizontal reinforcement rod 6 and a protection rod 7 are respectively fixedly connected to the outer surface of the support sleeve 4. A door frame plate 8 is fixedly connected to the outer surface of the horizontal reinforcement rod 6. A protection door 9 is rotatably connected to the outer surface of the support sleeve 4 near the door frame plate 8. By providing the support rod 3, the support sleeve 4 and the U-shaped limit frame 5, by screwing the support rod 3 into the first threaded hole and the second threaded hole, the fixation of the support rod 3, the support sleeve 4 and the U-shaped limit frame 5 can be achieved, and the assembly is convenient and fast. And by fitting and clamping the U-shaped limit frame 5 at both ends of the working platform 2, the fixation effect of the support rod 3 and the support sleeve 4 can be improved. Moreover, through the limitation of the U-shaped limit frame 5, the support rod 3 is not easily skewed, thereby effectively avoiding the fracture of the threaded part at the lower end of the support rod 3 and improving the service life of the protection device.

[0024] An external thread is provided on the lower outer surface of the support rod 3, and a hexagonal knob is fixedly connected to the upper end of the support rod 3. By providing the hexagonal knob, it is convenient to rotate the support rod 3.

[0025] The horizontal reinforcement rod 6 is a hollow steel pipe, and this design can effectively reduce the weight of the horizontal reinforcement rod 6.

[0026] The number of the protection rods 7 is multiple, and the multiple protection rods 7 are fixedly welded to the outer surface of the support sleeve 4 in a zigzag shape. This design utilizes the triangular structure formed by the multiple protection rods 7, thereby improving the firmness between the protection rods 7 and the support sleeve 4.

[0027] A plurality of support blocks 10 are fixedly connected to the back surface of the door frame plate 8, and a plurality of positioning blocks 11 of the same height as the support blocks 10 are fixedly connected to the back surface of the protective door 9. A shaft rod 12 is slidably connected to the surface of the support block 10. An arm rod 13 is fixedly connected to the outer surface of the shaft rod 12. A latch 14 is fixedly connected to the lower surface of the arm rod 13. A jack 15 capable of fitting with the latch 14 is formed on the surface of the positioning block 11. A baffle 16 is fixedly connected to the lower end of the shaft rod 12. A spring 17 sleeved on the outer surface of the shaft rod 12 is arranged between the baffle 16 and the support block 10. By inserting the latch 14 into the jack 15 of the positioning block 11, the protective door 9 can be closed. By applying an elastic force to the baffle 16 by the spring 17, the shaft rod 12 can drive the arm rod 13 to tend to move downward, effectively preventing the latch 14 from disengaging from the jack 15 of the positioning block 11, thereby making the protective door 9 safer to use.

[0028] A limiting plate 18 is fixedly connected to the side surface of the door frame plate 8. By providing the limiting plate 18, the protective door 9 can be limited, thereby facilitating the alignment of the latch 14 and the jack 15.

[0029] A connecting ring 19 is fixedly connected to the outer surface of the horizontal reinforcing rod 6. A safety rope 20 is tied and fixed to the surface of the connecting ring 19. One end of the safety rope 20 away from the connecting ring 19 is fixedly connected to a waist fixing strap 21. By providing a plurality of support sleeves 4, horizontal reinforcing rods 6 and protective rods 7, a frame-shaped protective structure can be formed to initially protect the staff. By providing the connecting ring 19, the safety rope 20 and the waist fixing strap 21, by tying and fixing the waist fixing strap 21 to the waist of the staff, the staff can be limited, thereby further improving the protection effect and enhancing the safety during high-altitude operations.

[0030] In the attached drawings of the disclosed embodiments of the present invention, only the structures related to the disclosed embodiments are involved. Other structures can refer to the general design. Without conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0031] Finally: The above are only the preferred embodiments of the present invention and are not used to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A safety protection device for a lift that is easy to assemble, comprising a lift body (1) and a working platform (2), characterized in that: Four first threaded holes are opened at the four corners of the surface of the working platform (2). A support rod (3) is threadedly connected in the first threaded hole. A support sleeve (4) is slidably connected to the outer surface of the support rod (3). A U-shaped limit frame (5) is fixedly connected to the lower outer surface of the support sleeve (4), and the U-shaped limit frame (5) can be mutually engaged and clamped with the left and right ends of the working platform (2). A second threaded hole is opened on the lower surface of the U-shaped limit frame (5), and the second threaded hole can be threadedly connected to the lower end of the support rod (3). Horizontally reinforcing rods (6) and protective rods (7) are respectively fixedly connected to the outer surface of the support sleeve (4). A door frame plate (8) is fixedly connected to the outer surface of the horizontally reinforcing rod (6). A protective door (9) is rotatably connected to the outer surface of the support sleeve (4) close to the door frame plate (8).

2. The safety protection device for a lift that is easy to assemble according to claim 1, wherein: External threads are provided on the lower outer surface of the support rod (3), and a hexagonal knob is fixedly connected to the upper end of the support rod (3).

3. The safety protection device for a lift that is easy to assemble according to claim 1, wherein: The horizontally reinforcing rod (6) is a hollow steel pipe.

4. The safety protection device for a lift that is convenient for assembly according to claim 1, wherein: The number of the protective rods (7) is multiple, and the multiple protective rods (7) are fixedly welded to the outer surface of the support sleeve (4) in a zigzag shape.

5. The safety protection device for a lift that is convenient for assembly according to claim 1, wherein: A plurality of support blocks (10) are fixedly connected to the back surface of the door frame plate (8). A plurality of positioning blocks (11) with the same height as the support blocks (10) are fixedly connected to the back surface of the protective door (9). A shaft rod (12) is slidably connected to the surface of the support block (10). An arm rod (13) is fixedly connected to the outer surface of the shaft rod (12). A latch (14) is fixedly connected to the lower surface of the arm rod (13). A jack (15) capable of being mutually engaged with the latch (14) is opened on the surface of the positioning block (11). A baffle (16) is fixedly connected to the lower end of the shaft rod (12). A spring (17) sleeved on the outer surface of the shaft rod (12) is arranged between the baffle (16) and the support block (10).

6. The safety protection device for a lift that is easy to assemble according to claim 5, characterized in that: A limit plate (18) is fixedly connected to the side surface of the door frame plate (8).

7. The safety protection device for a lift that is easy to assemble according to claim 1, wherein: A connecting ring (19) is fixedly connected to the outer surface of the horizontally reinforcing rod (6). A safety rope (20) is bundled and fixed to the surface of the connecting ring (19). One end of the safety rope (20) far away from the connecting ring (19) is fixedly connected to a waist fixing strap (21).

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