Installation method of shaped elevator cage capable of being lifted / descended

Abstract

The invention discloses a design general situation of an electric lifting / descending finalization ladder cage for foundation pit engineering. The electric lifting / descending ladder cage is formed by combining basic components such as a base, stand columns, a platform, a stair, a stair handrail, a safety protection net, a safety door, a safety guardrail, I-shaped steel, square steel and an electric hoist. According to the safety ladder cage for the constructors to pass up and down, the height of each section of the ladder cage is 2.0 m, the weight of each section of the ladder cage is 360 kg, an I-shaped steel lifting frame is arranged on the periphery of the ladder cage, an electric hoist is arranged on the lifting frame, and the electric hoist is connected with the bottom of the shaped ladder cage through a lifting chain lifting hook; according to the construction progress and requirements of foundation pit engineering, the shaping ladder cage is lifted / descended by driving the electric hoist, so that people can pass up and down.

Description

Technical Field

[0001] The invention relates to a building structure, in particular to equipment used in high-altitude work, and specifically to an installation method for a hoistable / descendable standardized ladder cage. Background Art

[0002] In the field of high-altitude work technology, tower cranes are used equipment, especially in the construction field. As the height of buildings gradually increases, it is necessary to arrange high-altitude passages. The current arrangement of high-altitude passages uses tower cranes to lift the required materials, and then install the high-altitude passages. When it comes to buildings with a large plane area, it is necessary to use the tower crane for lifting for a long time, and the other operations of the tower crane are stopped, affecting the construction efficiency.

[0003] Therefore, it is necessary to provide a kind of lifting / descending type standardized ladder cage installation method to solve the above problems. Summary of the invention

[0004] The purpose of the invention is to provide a method for installing a hoistable / descendable standardized ladder cage.

[0005] The technical solution is as follows:

[0006] A method for installing a hoistable / descendable standardized ladder cage, comprising the following steps:

[0007] 1) a lower platform frame is provided, vertical guide tubes are provided around the lower platform frame, and an upper platform frame is provided at the upper end of the vertical guide tubes to obtain a frame-shaped main body;

[0008] 2) According to the layout of the building area, several frame-shaped bodies are arranged;

[0009] 3) Stairs and handrails are arranged in the frame-shaped body to obtain a pre-defined ladder cage;

[0010] 4) A safety passage is set up on the frame surfaces corresponding to the frame-shaped bodies, and safety nets are set up on both sides of the safety passage;

[0011] 4) If there is no safety passage frame, the safety net is directly set up;

[0012] 6) A lifting bracket is arranged in the area corresponding to the frame-shaped main body, an electric hoist is arranged on the lifting bracket, and the electric hoist is connected to a pre-formed ladder cage through a lifting chain;

[0013] The steps for setting up the lifting bracket include:

[0014] 6-1) Use two L160×6mm angle steels to weld at both ends of the No. 25 I-beam, hoist the No. 25 I-beam and place it on the support beam and tie beam in the cage installation area, fill the space between the angle steel and the support beam with wooden wedges, and fix the two sides of the wooden wedges with M16 expansion bolts;

[0015] 6-2) Weld the No. 20 I-beam to the waist plate of the No. 25 I-beam, fully weld the contact surface, and form a well-shaped support body as a whole;

[0016] 6-3) An electric hoist is set on each I-beam of the well-shaped support body according to the positioning. The model is 1T / 380V / 500W, with a dead weight of 36kg, a lifting height of 3-12m, and a rated load of 1500kg;

[0017] 7) As the construction progresses, when the height of the safety passage needs to be increased, the electric hoist is driven to lift / lower the pre-formed ladder cage. After all the pre-formed ladder cages are lifted / lowered to the same height, steps 4)-5) are repeated to form a safety passage with the required height added;

[0018] 8) Repeat step 7) according to the construction progress to sequentially form a method for setting up a safe passage of the required building height. At the same time, a pre-formed ladder cage is formed to facilitate the overall adjustment of the section adding method.

[0019] Furthermore, in step 1), the lower platform frame and the upper platform frame are inverted by 180°.

[0020] Furthermore, in step 4), a safety door is provided on the frame surface of the safety passage.

[0021] Furthermore, a cage hoisting attachment is provided on the outside of the pre-formed cage, and the cage hoisting attachment is connected to the H-shaped steel.

[0022] Furthermore, the lifting bracket must be installed with special cage attachments every 6 meters for use with the cage hoisting attachments.

[0023] Furthermore, in step 7), the construction height is divided into sections at intervals of 2 meters.

[0024] Furthermore, the prefabricated shaped ladder cage located at the on-site crown beam position is connected to the on-site crown beam using a shaped staircase, the outer shaped staircase is processed and buckled on the frame-like body, and the shaped staircase is fixed to the crown beam using M8 expansion bolts.

[0025] Furthermore, in order to ensure the vertical stability of the prefabricated ladder cage under the influence of horizontal forces generated during the construction process, four connecting beams are arranged on the supporting beams of each supporting beam of the prefabricated ladder cage, and the material of the connecting beams is 100*100*3mm square steel.

[0026] Furthermore, a rear embedded plate is arranged in the supporting beam, one end of the connecting beam is connected to the rear embedded plate by full welding, and the other end is connected to the pre-formed ladder cage by holding the connecting body.

[0027] Furthermore, in order to ensure the stability of the bottom force of the pre-formed ladder cage, a 200mm thick C200 fine stone concrete is set at the bottom as the bottom base.

[0028] Compared with the prior art, the present invention forms a method for setting up a safe passage of the required building height through standardized ladder cage installation, which does not require the use of a tower crane. The tower crane can still perform other operations when the safe passage of the required building height is set up, thereby effectively shortening the construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural diagram of a pre-formed ladder cage.

[0030] Figure 2 It is a schematic diagram of a pre-formed cage lift.

[0031] Figure 3 It is a schematic diagram of the layout of pre-formed stair cages corresponding to the building area.

[0032] Figure 4 It is a schematic diagram of the lifting bracket.

[0033] Figure 5 It is a cheap and schematic diagram of on-site crown beams and pre-formed ladder cages.

[0034] Figure 6 It is a schematic diagram of the connection between the pre-formed ladder cage and the supporting beam.

[0035] Figure 7 This is a schematic diagram of the connection beam setting. DETAILED DESCRIPTION

[0036] Example:

[0037] A method for installing a hoistable / descendable standardized ladder cage, comprising the following steps:

[0038] 1) See Figure 1 , a lower platform frame 1 is provided, vertical guide tubes 2 are provided around the lower platform frame 1, and an upper platform frame 3 is provided at the upper end of the vertical guide tube 2 to obtain a frame-shaped main body 100;

[0039] 2) See Figure 3 , corresponding to the layout of the building area 1000, a plurality of frame-shaped bodies 100 are provided;

[0040] 3) Stairs and handrails are arranged in the frame-shaped body 100 to obtain a pre-defined stair cage;

[0041] 4) The frame surfaces corresponding to the frame-shaped main bodies 100 are provided with safety passages, and safety nets are provided on both sides of the safety passages;

[0042] 4) If the frame surface is not provided with a safety passage, a safety net 4 is directly provided;

[0043] 6) A lifting bracket 200 is provided in the area corresponding to the frame-shaped main body, an electric hoist is provided on the lifting bracket 200, and the electric hoist is connected to the pre-formed ladder cage 100 through a lifting chain;

[0044] See also Figure 2 , 4 , the steps of setting the lifting bracket 200 include:

[0045] 6-1) Use two L160×6mm angle steels to weld at both ends of the No. 25 I-beam, hoist the No. 25 I-beam and place it on the support beam and tie beam in the cage installation area, fill the space between the angle steel and the support beam with wooden wedges, and fix the two sides of the wooden wedges with M16 expansion bolts;

[0046] 6-2) Weld the No. 20 I-beam to the waist plate of the No. 25 I-beam, fully weld the contact surface, and form a well-shaped support body as a whole;

[0047] 6-3) An electric hoist is set on each I-beam of the well-shaped support body according to the positioning. The model is 1T / 380V / 500W, with a dead weight of 36kg, a lifting height of 3-12m, and a rated load of 1500kg;

[0048] 7) As the construction progresses, when the height of the safety passage needs to be increased, the electric hoist is driven to lift / lower the pre-formed ladder cage 100. After all the pre-formed ladder cages 100 are lifted / lowered to the same height, steps 4)-5) are repeated to form a safety passage with an additional required height;

[0049] 8) Repeat step 7) according to the construction progress to sequentially form a method for setting up a safe passage of the required building height. At the same time, a pre-formed ladder cage is formed to facilitate the overall adjustment of the section adding method.

[0050] In step 1), the lower platform frame 1 and the upper platform frame 2 are inverted by 180°.

[0051] In step 4), a safety door 5 is provided on the frame surface of the safety passage.

[0052] The pre-shaped ladder cage 100 is provided with a ladder cage hoisting attachment outside, and the ladder cage hoisting attachment is connected to the H-shaped steel.

[0053] The lifting bracket 200 must be installed with special cage attachments every 6 meters to match the cage hoisting attachments.

[0054] In step 7), the construction height is divided into sections at intervals of 2 meters.

[0055] See also Figure 4The pre-formed ladder cage 100 located at the position of the on-site crown beam 300 is connected to the on-site crown beam 300 using a formed staircase 301. The outer formed staircase 301 is processed and buckled on the frame-shaped body, and the formed staircase 301 is fixed to the crown beam 300 using M8 expansion bolts.

[0056] See also Figure 5-6 In order to ensure that the prefabricated ladder cage 100 is vertically stable under the influence of horizontal forces generated during the construction process, four connecting beams 401 are arranged on the supporting beam 400 of each supporting beam prefabricated ladder cage, and the material of the connecting beam is 100*100*3mm square steel.

[0057] A rear embedded plate 402 is provided in the support beam 400 , one end of the connecting beam 401 is connected to the rear embedded plate 402 by full welding, and the other end is connected to the pre-formed ladder cage 100 by holding the connector 403 .

[0058] In order to ensure the stability of the force on the bottom of the pre-formed ladder cage 100, a 200mm thick C200 fine stone concrete is set at the bottom as the bottom base 500.

[0059] Compared with the prior art, the present invention forms a method for setting up a safe passage of the required building height through standardized ladder cage installation, which does not require the use of a tower crane. The tower crane can still perform other operations when the safe passage of the required building height is set up, thereby effectively shortening the construction period.

[0060] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the creative concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A method for installing a lifting / descending type ladder cage, characterized in that: include: 1) a lower platform frame is provided, vertical guide tubes are provided around the lower platform frame, and an upper platform frame is provided at the upper end of the vertical guide tubes to obtain a frame-shaped main body; 2) According to the layout of the building area, several frame-shaped bodies are arranged; 3) Stairs and handrails are arranged in the frame-shaped body to obtain a pre-defined ladder cage; 4) A safety passage is set up on the frame surfaces corresponding to the frame-shaped bodies, and safety nets are set up on both sides of the safety passage; 4) If there is no safety passage frame, the safety net is directly set up; 6) A lifting bracket is arranged in the area corresponding to the frame-shaped main body, an electric hoist is arranged on the lifting bracket, and the electric hoist is connected to a pre-formed ladder cage through a lifting chain; The steps for setting up the lifting bracket include: 6-1) Use two L160×6mm angle steels to weld at both ends of the No. 25 I-beam, hoist the No. 25 I-beam and place it on the support beam and tie beam in the cage installation area, fill the space between the angle steel and the support beam with wooden wedges, and fix the two sides of the wooden wedges with M16 expansion bolts; 6-2) Weld the No. 20 I-beam to the waist plate of the No. 25 I-beam, fully weld the contact surface, and form a well-shaped support body as a whole; 6-3) An electric hoist is set on each I-beam of the well-shaped support body according to the positioning. The model is 1T / 380V / 500W, with a dead weight of 36kg, a lifting height of 3-12m, and a rated load of 1500kg; 7) As the construction progresses, when the height of the safety passage needs to be increased, the electric hoist is driven to lift / lower the pre-formed ladder cage. After all the pre-formed ladder cages are lifted / lowered to the same height, steps 4)-5) are repeated to form a safety passage with the required height added; 8) Repeat step 7) according to the construction progress, and sequentially form a method for setting up a safe passage of the required building height. At the same time, form a method for adding sections to a pre-formed ladder cage to facilitate overall adjustment.

2. A method for installing a lifting / descending standardized ladder cage according to claim 1, characterized in that: In step 1), the lower platform frame and the upper platform frame are inverted by 180 degrees.

3. A method for installing a lifting / descending standardized ladder cage according to claim 2, characterized in that: In step 4), a safety door is set on the frame surface of the safety passage.

4. A method for installing a lifting / descending standardized ladder cage according to claim 3, characterized in that: The outside of the pre-formed ladder cage is provided with a ladder cage hoisting attachment, and the ladder cage hoisting attachment is connected to the H-shaped steel.

5. A method for installing a lifting / descending standardized ladder cage according to claim 4, characterized in that: Special cage attachments for use with cage hoisting attachments must be installed on the lifting bracket every 6 meters.

6. A method for installing a lifting / descending standardized ladder cage according to claim 5, characterized in that: In step 7), the construction height is divided into sections at intervals of 2 meters.

7. A method for installing a lifting / descending standardized ladder cage according to claim 6, characterized in that: The prefabricated shaped ladder cage located at the on-site crown beam position is connected to the on-site crown beam using a shaped staircase. The outer shaped staircase is processed and buckled on the frame-like body, and the shaped staircase is fixed to the crown beam using M8 expansion bolts.

8. A method for installing a hoistable / descendable standardized ladder cage according to claim 7, characterized in that: In order to ensure the vertical stability of the prefabricated ladder cage under the influence of horizontal forces generated during the construction process, four connecting beams are set on the supporting beams of each supporting beam of the prefabricated ladder cage, and the material of the connecting beam is 100*100*3mm square steel.

9. A method for installing a lifting / descending standardized ladder cage according to claim 8, characterized in that: A rear embedded plate is arranged in the supporting beam, one end of the connecting beam is connected to the rear embedded plate by full welding, and the other end is connected to the pre-formed ladder cage by holding the connecting body.

10. A method for installing a hoistable / descendable standardized ladder cage according to any one of claims 1 to 9, characterized in that: In order to ensure the stability of the bottom force of the pre-formed ladder cage, a 200mm thick C200 fine stone concrete is set at the bottom as the bottom base.

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