Safety anti-falling device for water conservancy dam construction

Abstract

The utility model relates to the technical field of safety protection equipment, in particular to a safety anti-falling device for water conservancy dam construction, which comprises a bottom plate, four fences are fixedly connected to the top of the bottom plate, a fence door is hinged to the middle of the rear side of the four fences, a fence lifting mechanism is arranged on the bottom plate, and an abutting limiting mechanism is arranged on the rear side of the bottom of the bottom plate. By means of the arrangement of the guardrail lifting mechanism, lifting of the three-face guardrail is achieved, the height of the guardrail can be conveniently adjusted according to the height of a constructor, the safe anti-falling capacity of equipment is improved, the use safety of the equipment is improved, and the safety of the equipment is improved. And through the arrangement of the abutting limiting mechanism, when the equipment descends to a designated working position, a hydraulic cylinder is started, and the output end of the hydraulic cylinder extends out, so that abutting limiting of a friction abutting block and the outer vertical face of the dam is achieved, the stability of the equipment is improved, and the probability that workers fall off is further reduced.

Description

Technical Field

[0001] This utility model belongs to the field of safety protection equipment technology, specifically relating to a safety anti-fall device for water conservancy dam construction. Background Technology

[0002] In the construction of water conservancy dams, working at height is an unavoidable part, especially in certain procedures, such as the installation and removal of formwork, steel bar binding, waterproofing of the dam surface, and installation of electromechanical equipment. In particular, during the waterproofing of the dam surface, a suspended basket is usually suspended from the top of the dam using a hoist, which poses a risk of workers falling.

[0003] In existing technologies, the height of the guardrails around the construction scaffold is fixed, making it difficult to adjust according to the height of different construction workers. When the construction workers are tall, the risk of falling increases. Moreover, when carrying out waterproofing construction on the dam surface, the work is carried out outdoors, and the area around the dam is relatively open. When working at height, the scaffold is greatly affected by the wind, which can easily cause the scaffold to sway with the wind, increasing the risk of workers falling. Utility Model Content

[0004] The purpose of this utility model is to provide a simple and reasonably designed safety anti-fall device for water conservancy dam construction in order to solve the above problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A safety anti-fall device for water conservancy dam construction includes a base plate, with four fences fixedly connected to the top of the base plate, and a fence gate hinged to the middle of the rear side of the four fences. A guardrail lifting mechanism is provided on the base plate, and a locking and limiting mechanism is provided on the rear side of the bottom of the base plate.

[0007] The clamping and limiting mechanism includes a fixed seat fixed to the rear side of the bottom of the base plate, a hydraulic cylinder fixedly connected to the bottom of the fixed seat, a connecting plate fixedly connected to the output end of the hydraulic cylinder, and fixed rods fixedly installed on both the left and right sides of the rear side of the connecting plate, with friction clamping blocks fixedly connected to the rear side of the fixed rods.

[0008] Preferably, two arc-shaped fixing frames are symmetrically fixedly connected to the top left and right sides of the four-sided fence, and a hoisting frame for hoisting is fixedly installed at the top center of each of the two arc-shaped fixing frames, with two hoisting holes in the middle of the hoisting frame.

[0009] Preferably, four pads are symmetrically fixedly connected to the four corners of the bottom of the base plate.

[0010] Preferably, the guardrail lifting mechanism includes a drive assembly and a lifting and protection assembly. The drive assembly includes a mounting base fixedly connected to the front side of the bottom of the base plate. A servo motor is fixedly connected to the bottom of the mounting base, and an active bevel gear is fixedly connected to the output end of the servo motor.

[0011] Preferably, the lifting and protective assembly includes two fixed blocks symmetrically fixedly connected to the rear side of the base plate. A guide rod is fixedly connected to the top center of each of the two fixed blocks. An L-shaped guide plate is slidably sleeved on each of the two guide rods. A three-sided guardrail for installation protection of construction personnel is fixedly connected between the two L-shaped guide plates. A bottom frame is fixedly connected to the bottom of the three-sided guardrail. A lifting block is fixedly connected to the front center of the bottom frame. A lead screw is rotatably passed through the center of the lifting block. The lead screw and the lifting block are connected by a ball nut thread. A driven bevel gear that meshes with the driving bevel gear is fixedly sleeved at the bottom end of the lead screw.

[0012] Preferably, a fixing plate is rotatably sleeved on the lower part of the lead screw, the rear side of the fixing plate is fixedly connected to the center of the front side of the base plate, and a stop block is fixedly connected to the top of the lead screw.

[0013] The beneficial effects of this utility model are as follows:

[0014] This utility model, through the setting of a guardrail lifting mechanism, realizes the lifting of three-sided guardrails, which facilitates the height adjustment of the guardrails according to the height of construction workers, improves the safety and anti-fall capabilities of the equipment, and helps to improve the safety of equipment use. In addition, through the setting of a clamping and limiting mechanism, when the equipment is lowered to the designated working position, the hydraulic cylinder is activated, and the output end of the hydraulic cylinder extends, thereby realizing the clamping and limiting of the friction clamping block against the outer facade of the dam, improving the stability of the equipment and further reducing the probability of workers falling. Attached Figure Description

[0015] Figure 1 This is a three-dimensional top view of the overall structure of this utility model;

[0016] Figure 2 This is a three-dimensional bottom view of the overall structure of this utility model;

[0017] Figure 3 This is a schematic diagram of the back of this utility model;

[0018] Figure 4 This is a perspective view of the guardrail lifting mechanism of this utility model;

[0019] Figure 5 This is a perspective view of the clamping and limiting mechanism of this utility model.

[0020] In the diagram: 1. Base plate; 2. Pad block; 3. Guardrail lifting mechanism; 31. Drive assembly; 311. Mounting base; 312. Servo motor; 313. Drive bevel gear; 314. Driven bevel gear; 315. Stop block; 316. Lead screw; 317. Lifting block; 318. Fixing plate; 32. Lifting and protection assembly; 321. Guide rod; 322. L-shaped guide plate; 323. Three-sided guardrail; 324. Bottom frame; 325. Fixing block; 4. Arc-shaped fixing frame; 5. Lifting hole; 6. Lifting frame; 7. Four-sided fence; 8. Fence gate; 9. Clamping and limiting mechanism; 91. Friction clamping block; 92. Fixing rod; 93. Connecting plate; 94. Hydraulic cylinder; 95. Fixing base. Detailed Implementation

[0021] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0022] Example

[0023] Please see Figure 1 and Figure 2 A safety anti-fall device for water conservancy dam construction includes a base plate 1, with four fences 7 fixedly connected to the top of the base plate 1, and a fence gate 8 hinged to the middle of the rear side of the four fences 7. A guardrail lifting mechanism 3 is provided on the base plate 1, and a clamping and limiting mechanism 9 is provided on the rear side of the bottom of the base plate 1. In the process of use, the height of the guardrail is adjusted by the guardrail lifting mechanism 3, and the clamping and limiting mechanism 9 is used to clamp and limit the equipment, thereby improving stability.

[0024] Please see Figure 1 The top left and right sides of the four-sided fence 7 are symmetrically fixedly connected to two arc-shaped fixing frames 4, and the top center of each of the two arc-shaped fixing frames 4 is fixedly installed with a hoisting frame 6 for hoisting. The hoisting frame 6 has two hoisting holes 5 in the middle. The bottom of the base plate 1 is symmetrically fixedly connected to four pads 2 at the four corners.

[0025] Please see Figure 2 The guardrail lifting mechanism 3 includes a drive assembly 31 and a lifting and protection assembly 32. The drive assembly 31 includes a mounting base 311 fixedly connected to the front side of the bottom of the base plate 1. A servo motor 312 is fixedly connected to the bottom of the mounting base 311, and an active bevel gear 313 is fixedly connected to the output end of the servo motor 312.

[0026] Please see Figure 2 , Figure 3 and Figure 4The lifting and protective assembly 32 includes two fixed blocks 325 symmetrically fixed to the rear side of the base plate 1. Guide rods 321 are fixedly connected to the top center of each of the two fixed blocks 325. L-shaped guide plates 322 are slidably sleeved on each of the two guide rods 321. A three-sided guardrail 323 for installation protection of construction personnel is fixedly connected between the two L-shaped guide plates 322. A bottom frame 324 is fixedly connected to the bottom of the three-sided guardrail 323, and a lifting block is fixedly connected to the front center of the bottom frame 324. 317, a lifting block 317 has a lead screw 316 that rotates through its center. The lead screw 316 and the lifting block 317 are connected by a ball nut thread. The bottom end of the lead screw 316 is fixedly sleeved with a driven bevel gear 314 that meshes with the driving bevel gear 313. The lower part of the lead screw 316 is rotatably sleeved with a fixing plate 318. The rear side of the fixing plate 318 is fixedly connected to the center of the front side of the base plate 1. The top end of the lead screw 316 is fixedly connected with a stop block 315. The stop block 315 is set to prevent the lifting block 317 from disengaging from the lead screw 316.

[0027] Please see Figure 2 , Figure 3 and Figure 5 The clamping and limiting mechanism 9 includes a fixed seat 95 fixed to the bottom rear side of the base plate 1. A hydraulic cylinder 94 is fixedly connected to the bottom of the fixed seat 95. A connecting plate 93 is fixedly connected to the output end of the hydraulic cylinder 94. Fixed rods 92 are fixedly installed on both the left and right ends of the rear side of the connecting plate 93. Friction clamping blocks 91 are fixedly connected to the rear side of the fixed rods 92.

[0028] It should be noted that, in the use of this safety anti-fall device for water conservancy dam construction, the steel cable of the hoist at the top of the dam is first passed through the hoisting hole 5 on the hoisting frame 6. The hoist is then used to hoist the equipment to the top of the outer facade of the dam. At this time, the servo motor 312 in the guardrail lifting mechanism 3 is activated. The output end of the servo motor 312 drives the active bevel gear 313 to rotate, which in turn drives the driven bevel gear 314 and the lead screw 316 on it to rotate. This, in turn, drives the lifting block 317 and the bottom frame 324 on it to move upward, thereby driving the three-sided guardrail 323 to move upward. Reversing the servo motor 312 will cause the three-sided guardrail 323 to move downward, making it easy to adjust the height of the three-sided guardrail 323 according to the height of the construction personnel. The height of the equipment is increased, improving its anti-fall capability. The guide rod 321 and L-shaped guide plate 322 are used to limit and guide the vertical movement of the three-sided guardrail 323. At this time, the construction personnel enter the four-sided guardrail 7 through the fence gate 8. After the fence gate 8 is closed, the top hoist lowers the four-sided guardrail 7 and the base plate 1 to the working position on the outer facade of the dam. At this time, the hydraulic cylinder 94 is activated, and the output end of the hydraulic cylinder 94 extends, driving the connecting plate 93 and the fixed rod 92 on it to move towards the outer facade of the dam. Then, it synchronously drives the friction abutment block 91 to move towards the outer facade of the dam, ensuring that the friction abutment block 91 is firmly fixed to the outer facade of the dam, improving the stability of the equipment during operation, and further improving the anti-fall capability of the equipment.

[0029] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A safety anti-fall device for construction of a water conservancy dam, comprising a base plate (1), wherein a four-sided fence (7) is fixedly connected to the top of the base plate (1), and a fence gate (8) is hinged to the middle of the rear side of the four-sided fence (7), a guardrail lifting mechanism (3) is provided on the base plate (1), and a pressing and limiting mechanism (9) is provided on the rear side of the bottom of the base plate (1); The clamping and limiting mechanism (9) includes a fixed seat (95) fixed to the rear side of the bottom of the base plate (1). A hydraulic cylinder (94) is fixedly connected to the bottom of the fixed seat (95). A connecting plate (93) is fixedly connected to the output end of the hydraulic cylinder (94). Fixed rods (92) are fixedly installed on both the left and right sides of the rear side of the connecting plate (93). Friction clamping blocks (91) are fixedly connected to the rear side of the fixed rods (92).

2. The safety anti-fall device for water conservancy dam construction according to claim 1, characterized in that: The top left and right sides of the four-sided fence (7) are symmetrically fixedly connected to two arc-shaped fixing frames (4), and the top center of each of the two arc-shaped fixing frames (4) is fixedly installed with a hoisting frame (6) for hoisting. The hoisting frame (6) has two hoisting holes (5) in the middle.

3. The safety anti-fall device for water conservancy dam construction according to claim 1, characterized in that: The bottom plate (1) has four pads (2) symmetrically fixed at its four corners.

4. A safety anti-fall device for water conservancy dam construction according to claim 1, characterized in that: The guardrail lifting mechanism (3) includes a drive assembly (31) and a lifting and protection assembly (32). The drive assembly (31) includes a mounting base (311) fixedly connected to the front side of the bottom of the base plate (1). A servo motor (312) is fixedly connected to the bottom of the mounting base (311), and an active bevel gear (313) is fixedly connected to the output end of the servo motor (312).

5. A safety anti-fall device for water conservancy dam construction according to claim 4, characterized in that: The lifting and protective assembly (32) includes two fixed blocks (325) symmetrically fixedly connected to the rear side of the base plate (1). The top center of each of the two fixed blocks (325) is fixedly connected to a guide rod (321). An L-shaped guide plate (322) is slidably sleeved on each of the two guide rods (321). A three-sided guardrail (323) for installing protection for construction personnel is fixedly connected between the two L-shaped guide plates (322). A bottom frame (324) is fixedly connected to the bottom of the three-sided guardrail (323). A lifting block (317) is fixedly connected to the center of the front side of the bottom frame (324). A lead screw (316) rotates through the center of the lifting block (317). The lead screw (316) and the lifting block (317) are connected by a ball nut thread. A driven bevel gear (314) that meshes with the active bevel gear (313) is fixedly sleeved at the bottom of the lead screw (316).

6. A safety anti-fall device for water conservancy dam construction according to claim 5, characterized in that: The lower part of the lead screw (316) is rotatably sleeved with a fixing plate (318), the rear side of the fixing plate (318) is fixedly connected to the center of the front side of the base plate (1), and the top end of the lead screw (316) is fixedly connected with a stop block (315).

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