Protective net for attached arm of tower crane

Abstract

The utility model relates to the technical field of protective nets, and discloses a tower crane auxiliary arm protective net which comprises two groups of front guardrails, two first fixing columns, two groups of side guardrails and two second fixing columns, the two groups of front guardrails are fixedly connected to the middle positions of the two side walls of the two opposite first fixing columns in a threaded mode respectively, and the two groups of side guardrails are fixedly connected to the middle positions of the two opposite first fixing columns. The two sets of side guardrails are fixedly connected to the middle positions of the front side walls and the middle positions of the rear side walls of the two opposite second fixing columns in a threaded mode correspondingly, and a roller shutter guardrail is installed in the middle position of the inner side wall of the side guardrail close to the right front side. According to the electric roller shutter guardrail, the electric rolling device is arranged, rolling and unfolding can be achieved through the motor, operation is more convenient and efficient, the electric roller shutter guardrail is more convenient to operate, the risk of manual operation errors is reduced, and safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of protective nets, in particular to a protective net for a tower crane arm. Background Art

[0002] The tower crane arm protection net is a safety protection device used on tower crane construction sites. It is mainly used to prevent objects from falling and injuring people. The tower crane arm is at a higher position, and it is easy for tools, materials or other objects to fall from high altitude. Therefore, a protection net is needed to protect the safety of construction site personnel. This kind of protection net is usually made of wear-resistant and tensile-resistant materials, such as polyester fiber, nylon, etc. The mesh is generally small, which can effectively prevent objects from falling. Installed on the tower crane arm, it ensures that construction site personnel will not be injured by falling objects when working below, so as to ensure the safety of construction site workers to the greatest extent.

[0003] However, with the existing tower crane arm protection net, the operator needs to open and close the guardrail on one side when climbing, so that the operator can continue to climb upwards. However, the existing opening and closing structure is usually a single-door structure, and the operator needs to pay attention to the opening and closing angle of the guardrail when opening and closing the guardrail, which is prone to danger and accidents. Therefore, technical personnel in this field provide a tower crane arm protection net to solve the above-mentioned problems. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a tower crane arm protection net.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a tower crane arm protection net, comprising two groups of front guardrails, two first fixed columns, two groups of side guardrails and two second fixed columns, the two groups of front guardrails are respectively threaded and fixedly connected to the middle position of the two side walls of the two opposite first fixed columns, the two groups of side guardrails are respectively threaded and fixedly connected to the middle position of the front side wall and the middle position of the rear side wall of the two opposite second fixed columns, and a rolling guardrail is installed in the middle position of the inner wall of the side guardrail on the right front side.

[0006] Furthermore, the rolling shutter guardrail is equipped with an electric retracting device, which can be retracted and unfolded by a micro motor, making the operation more convenient and efficient. The electric rolling shutter guardrail is more convenient to operate, reduces the risk of human operating errors, and improves safety.

[0007] Furthermore, a winding roller is rotatably connected to the middle top position of the inner wall of the side guardrail on the right front side, the rolling curtain guardrail is fixedly installed with the winding roller, and limiting sliders are installed at the middle bottom position of the front side wall and the middle bottom position of the rear side wall of the rolling curtain guardrail.

[0008] Furthermore, when the rolling shutter guardrail is being rolled up or lowered, the limit sliders installed on the two side walls slide in two corresponding slide grooves respectively, thereby improving the stability of the rolling shutter guardrail.

[0009] Furthermore, the output end of the micro motor is controlled by an external controller to act on the active bevel gear to rotate, so that the driven bevel gear rotates in opposite directions, and acts on the rotating shaft to rotate in the same direction as the driven bevel gear, so that the winding roller rotates synchronously with it.

[0010] Furthermore, when the fixing plate is extended into the fixing groove, the operator connects the fixing bolts to the inside of the fixing groove and passes through the fixing plate through threads, thereby achieving a fixing effect and preventing the guardrail from becoming unstable due to the influence of the external environment during long-term use.

[0011] Furthermore, four alarm devices are used to issue cyclic alarms to remind people not to climb.

[0012] Furthermore, the rear side walls and the front side walls of the two groups of side guardrails are respectively threadedly fixed to the middle and side positions of the front side walls and the middle and side positions of the rear side walls of the two groups of front guardrails.

[0013] The utility model has the following beneficial effects:

[0014] 1. In the utility model, the electric rolling shutter guardrail is equipped with an electric retracting device, which can be retracted and unfolded by a motor, making the operation more convenient and efficient. The electric rolling shutter guardrail is more convenient to operate, reduces the risk of human operating errors, and improves safety.

[0015] 2. In the utility model, the rolling shutter guardrail can be applied to open spaces of various sizes as needed, and through the automatic rolling function and convenient operation, it provides a more efficient and safer safety protection solution and improves work efficiency.

[0016] 3. In the utility model, by setting up an alarm device, it plays a very important role in the high-altitude guardrail operation. It can provide timely warnings and notifications to ensure the safety of the staff and the safety of the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 A three-dimensional schematic diagram of a tower crane arm protection net proposed by the utility model;

[0018] Figure 2 It is a structural schematic diagram of the rolling shutter guardrail;

[0019] Figure 3 is a side sectional schematic diagram of a second fixing column and two corresponding side guardrails;

[0020] Figure 4 for Figure 2 A magnified schematic diagram of center A.

[0021] Legend:

[0022] 1. Main guardrail; 2. First fixed column; 3. Side guardrail; 4. Second fixed column; 5. Alarm device; 6. Roller guardrail; 7. Fixing bolt; 8. Winding roller; 9. Limiting slide groove; 10. Limiting slider; 11. Fixing groove; 12. Fixing plate; 13. Micro motor; 14. Active bevel gear; 15. Driven bevel gear; 16. Rotating shaft. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Reference Figure 1-4 A tower crane arm protection net includes two groups of front guardrails 1, two first fixed columns 2, two groups of side guardrails 3 and two second fixed columns 4. The two groups of front guardrails 1 are respectively threaded and fixedly connected to the middle positions of the two side walls of the two opposite first fixed columns 2, and the two groups of side guardrails 3 are respectively threaded and fixedly connected to the middle positions of the front side walls and the rear side walls of the two opposite second fixed columns 4. A rolling guardrail 6 is installed in the middle position of the inner wall of the side guardrail 3 on the right front side. The rolling guardrail 6 is equipped with an electric retracting device, which can be retracted and unfolded by a micro motor 13, making the operation more convenient and efficient. The electric rolling guardrail 6 is more convenient to operate, reduces the risk of human operating errors, and improves safety.

[0025] A winding roller 8 is rotatably connected to the middle top position of the inner wall of the side guardrail 3 on the right front side, and the rolling curtain guardrail 6 is fixedly installed with the winding roller 8. A limiting slider 10 is installed at the middle bottom position of the front side wall and the middle bottom position of the rear side wall of the rolling curtain guardrail 6. A limiting slide groove 9 is provided at the middle position of the front side of the inner wall of the side guardrail 3 on the right front side and the middle position of the rear side of the inner wall. The two limiting slide blocks 10 are respectively slidably connected to the middle position of the inner wall of the corresponding limiting slide groove 9, and the rolling curtain guardrail 6 is moved forward. When the rolling guardrail 6 is in operation, the limit sliders 10 installed on the two side walls slide in the two corresponding limit slide grooves 9 respectively, so as to improve the stability of the rolling guardrail 6. A micro motor 13 is installed on the top of the limit slide groove 9 on the rear side. The output end of the micro motor 13 is connected to the active bevel gear 14. The front side wall of the active bevel gear 14 is meshed with a driven bevel gear 15. The middle position of the front side wall of the driven bevel gear 15 is installed with a rotating shaft 16. The rotating shaft 1 The output end of 6 is connected with the input end of the winding roller 8, and the output end of the micro motor 13 is controlled by an external controller to act on the active bevel gear 14 to rotate, so that the driven bevel gear 15 rotates in the opposite direction, and acts on the rotating shaft 16 to rotate in the same direction as the driven bevel gear 15, so that the winding roller 8 rotates synchronously with it. A fixing groove 11 is provided at the middle bottom position of the inner wall of the side guardrail 3 on the right front side, and a fixing plate 12 is installed at the middle position of the bottom of the rolling curtain guardrail 6, and the fixing groove 11 matches the fixing plate 12. A fixing bolt 7 is threadedly connected to the middle bottom position of the right side wall of the side guardrail 3 on the right front side, and the fixing bolt 7 penetrates the middle position of the fixing plate 12 and is threadedly connected to the middle left position of the inner wall of the fixing groove 11. When the fixing plate 12 extends into the fixing groove 11, the operator is threadedly connected to the inside of the fixing groove 11 and penetrates the fixing plate 12 through the fixing bolt 7, thereby achieving a fixing effect, avoiding the long-term use of the guardrail and the instability caused by the influence of the external environment.

[0026] Alarm devices 5 are installed on both sides of the middle top of the two sets of main guardrails 1. The four alarm devices 5 are distributed in a rectangular array. The four alarm devices 5 provide cyclic alarms to remind people not to climb. The rear side walls and front side walls of the two sets of side guardrails 3 are respectively threadedly fixed to the middle sides of the front side walls and the middle sides of the rear side walls of the two sets of main guardrails 1.

[0027] Working principle: The output end of the micro motor 13 is controlled by an external controller to act on the active bevel gear 14 to rotate, so that the driven bevel gear 15 rotates in the opposite direction, and acts on the rotating shaft 16 to rotate in the same direction as the driven bevel gear 15, so that the winding roller 8 rotates synchronously therewith, thereby winding or lowering the rolling shutter guardrail 6. When the rolling shutter guardrail 6 is in operation, the limit sliders 10 installed on the two side walls slide in the two corresponding limit slide grooves 9 respectively, so as to improve the stability of the rolling shutter guardrail 6. When it is lowered and closed, when the fixing plate 12 extends into the fixing groove 11, the operator is threadedly connected to the inside of the fixing groove 11 through the fixing bolt 7 and passes through the fixing plate 12, thereby achieving a fixing effect, avoiding the guardrail from being used for a long time and becoming unstable due to the influence of the external environment. The four alarm devices 5 are used to perform a cyclic alarm to remind people not to climb.

[0028] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A tower crane arm protection net, comprising two groups of front guardrails (1), two first fixing columns (2), two groups of side guardrails (3) and two second fixing columns (4), wherein the two groups of front guardrails (1) are respectively threadedly fixedly connected to the middle positions of the two side walls of the two opposite first fixing columns (2), and the two groups of side guardrails (3) are respectively threadedly fixedly connected to the middle positions of the front side walls and the middle positions of the rear side walls of the two opposite second fixing columns (4), characterized in that: A rolling curtain guardrail (6) is installed at the middle position of the inner side wall of the side guardrail (3) on the right front side.

2. A tower crane arm protection net according to claim 1, characterized in that: A fixing groove (11) is provided at the middle bottom position of the inner wall of the side guardrail (3) on the right front side, and a fixing plate (12) is installed at the middle position of the bottom of the rolling curtain guardrail (6), and the fixing groove (11) matches the fixing plate (12).

3. A tower crane arm protection net according to claim 1, characterized in that: A winding roller (8) is rotatably connected to the middle top position of the inner wall of the side guardrail (3) on the right front side, the rolling curtain guardrail (6) is fixedly installed with the winding roller (8), and a limiting slider (10) is installed at the middle bottom position of the front side wall and the middle bottom position of the rear side wall of the rolling curtain guardrail (6).

4. A tower crane arm protection net according to claim 3, characterized in that: A limiting slide groove (9) is provided at a middle position of the front side of the inner wall of the side guardrail (3) on the right front side and at a middle position of the rear side of the inner wall, and two limiting slide blocks (10) are respectively slidably connected to the middle position of the inner wall of the corresponding limiting slide groove (9).

5. A tower crane arm protection net according to claim 4, characterized in that: A micro motor (13) is installed at the top of the limiting slide groove (9) on the rear side, the output end of the micro motor (13) is connected to a driving bevel gear (14), the front side wall of the driving bevel gear (14) is meshed with a driven bevel gear (15), a rotating shaft (16) is installed at the middle position of the front side wall of the driven bevel gear (15), and the output end of the rotating shaft (16) is connected to the input end of the winding roller (8).

6. A tower crane arm protection net according to claim 2, characterized in that: A fixing bolt (7) is threadedly connected at the middle bottom position of the right side wall of the side guardrail (3) on the right front side. The fixing bolt (7) passes through the middle position of the fixing plate (12) and is threadedly connected to the middle left position of the inner side wall of the fixing groove (11).

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