Quick dismantling device for pre-stressed anchor box of storage tank

Abstract

The utility model relates to the technical field of pre-stressed anchor box dismantling, in particular to a storage tank pre-stressed anchor box quick dismantling device which comprises a pre-stressed anchor box, wall concrete, a door-shaped support and a screw rod, the pre-stressed anchor box is embedded and fixed in the wall concrete, the interior of the pre-stressed anchor box is hollow, and the top end of the pre-stressed anchor box is provided with a round hole. The door-shaped support is erected above the pre-stressed anchor box, the bottom end of the door-shaped support is in contact fit with wall concrete, an upper supporting frame is arranged in the middle of the top end of the door-shaped support, the screw penetrates through the upper supporting frame from top to bottom and penetrates through the round hole to extend into the pre-stressed anchor box, the screw is sleeved with a lower supporting frame in the pre-stressed anchor box, and the length of the lower supporting frame is larger than the diameter of the round hole. The portion, above the upper supporting frame and below the lower supporting frame, of the threaded rod is in threaded connection with a driving block, the top end of the threaded rod is fixedly connected with a handle, and the quick dismantling device for the storage tank pre-stressed anchor box can effectively reduce the loss rate in the anchor box dismantling process.

Description

Technical Field

[0001] The utility model relates to the technical field of prestressed anchor box removal, in particular to a device for quickly removing a prestressed anchor box of a storage tank. Background Art

[0002] In previous similar tank projects, prestressed anchor boxes in walls were typically removed manually using steel pipes after concrete pouring. The removal process was similar. A standard steel pipe was inserted into the anchor box, and the lever mechanism was used to separate the anchor box from the wall concrete. However, using steel pipes for removal had the following drawbacks:

[0003] The demolition time is relatively long; since the lever principle can only separate one surface at a time, and the anchor box has five contact surfaces with the concrete, the demolition process is relatively cumbersome for the demolition workers.

[0004] Anchor box damage: For ease of installation, the anchor boxes used in storage tank projects are generally designed to be thinner, about 2mm. When removing them using the lever principle, the surface needs to be used as a support point. Since the force required for removal is large, the anchor box is easily damaged, increasing the anchor box loss rate.

[0005] The apparent quality of the concrete is damaged; because the prestressed anchor boxes are embedded on both sides of the tank buttresses, the side corners of the anchor boxes are only 40mm away from the outer surface of the concrete. When the box is pried open and removed, uneven force can easily cause cracks or even damage to the outer surface of the concrete. Utility Model Content

[0006] The purpose of the utility model is to provide a device for quickly removing a prestressed anchor box of a storage tank, so as to solve the technical problems existing in the above-mentioned background technology.

[0007] To achieve the above purpose, the technical solution of the utility model is as follows:

[0008] A device for quickly dismantling a prestressed anchor box of a storage tank comprises: a prestressed anchor box and wall concrete, the prestressed anchor box is embedded and fixed in the wall concrete, the prestressed anchor box is hollow inside and has a circular hole at the top, and also comprises: a door-shaped bracket, an upper support bracket, a screw, a lower support bracket, a driving block and a handle, the door-shaped bracket is mounted above the prestressed anchor box, the bottom end of the door-shaped bracket contacts and cooperates with the wall concrete, an upper support bracket is provided at the middle part of the top of the door-shaped bracket, the screw penetrates the upper support bracket from top to bottom and extends through the circular hole into the interior of the prestressed anchor box, the screw is sleeved with a lower support bracket inside the prestressed anchor box, the length of the lower support bracket is greater than the diameter of the circular hole, the screw is threadedly connected to the driving block above the upper support bracket and below the lower support bracket, and the top of the screw is fixedly connected to the handle.

[0009] Furthermore, the door-shaped bracket includes: a horizontal bar, a vertical bar and a base plate, two of the horizontal bars and two of the base plate are provided, and four of the vertical bars are provided. The two horizontal bars are arranged parallel to each other with a gap between them, and the bottom ends of the left and right sides of the two horizontal bars are fixedly connected to four vertical bars respectively, and the bottom ends of the two vertical bars on the same side are fixedly connected to the top end of a base plate on the same side.

[0010] Furthermore, the crossbars and vertical poles are made of ordinary steel pipes with a diameter of Φ48.3*3.6mm, and the bottom plate is a Q235b steel plate with a thickness of 10mm; the crossbars and vertical poles, as well as the vertical poles and bottom plate are fixed by welding.

[0011] Furthermore, supporting feet are provided at the four corners of the bottom end of the base plate.

[0012] Furthermore, the driving block is composed of a contact part, a connecting part and a driving part. The contact part is an equilateral triangle. A connecting part is integrally formed in the middle of the top of the contact part. A threaded hole is opened in the middle of the connecting part. The screw passes through and is threadedly connected to the threaded hole. The driving part is three vertical protrusions fixedly connected to the triangle of the contact part.

[0013] Furthermore, the upper support frame is M-shaped, and the two notches below the upper support frame are respectively clamped on the two cross bars. The top surface of the upper support frame is a plane, and the bottom end of the contact portion of the upper driving block contacts and cooperates with the top surface of the upper support frame. A through hole is opened in the middle of the top of the upper support frame, and the size of the through hole matches the size of the screw.

[0014] Furthermore, the lower support frame is a square steel tube, and a through hole two cooperating with the screw is opened in the middle of the lower support frame, and the top of the contact portion of the lower driving block contacts and cooperates with the bottom end surface of the lower support frame.

[0015] Furthermore, a hexagonal nut-shaped protrusion is provided on the upper portion of the connecting portion.

[0016] Furthermore, the handle is a square steel tube.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] By placing the lower support frame into the prestressed anchor box, passing the screw through the upper support frame and the lower support frame and threading the two drive blocks above the upper support frame and below the lower support frame respectively, the bottom plate of the door-shaped support is brought into contact with the buttress column wall, and the contact surface between the inner surface of the top of the anchor box and the lower support frame is adjusted so that they can fully contact, and then the lower support frame is subjected to a force toward the outside of the wall by knocking or rotating the hexagonal nut-shaped protrusion with external force, thereby completely removing the anchor box. The entire device can effectively reduce the loss rate during the removal of the anchor box and further reduce damage to the material during the removal process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural diagram of the utility model;

[0020] Figure 2 This is a bottom perspective view of the present invention;

[0021] Figure 3 It is a schematic diagram of the structure of the utility model when in use;

[0022] Figure 4 It is a transverse longitudinal sectional view of the utility model in use state;

[0023] Figure 5 It is a longitudinal sectional view of the utility model when in use.

[0024] The numbers in the accompanying drawings are: 1-cross bar, 2-vertical pole, 3-base plate, 4-upper support frame, 5-screw, 6-lower support frame, 7-drive block, 8-handle, 9-support foot, 10-prestressed anchor box, 1001-round hole, 11-wall concrete. DETAILED DESCRIPTION

[0025] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0026] See also Figures 1 to 5 As shown, a device for quickly dismantling a prestressed anchor box of a storage tank comprises: a prestressed anchor box 10 and wall concrete 11, the prestressed anchor box 10 is embedded and fixed in the wall concrete 11, the prestressed anchor box 10 is hollow inside and a circular hole 1001 is opened at the top, and also comprises: a door-shaped bracket, an upper support frame 4, a screw 5, a lower support frame 6, a driving block 7 and a handle 8, the door-shaped bracket is erected above the prestressed anchor box 10, the bottom end of the door-shaped bracket contacts and cooperates with the wall concrete 11, an upper support frame 4 is arranged at the middle part of the top of the door-shaped bracket, the screw 5 penetrates the upper support frame from top to bottom and extends through the circular hole 1001 into the interior of the prestressed anchor box 10, the screw 5 is sleeved with the lower support frame 6 inside the prestressed anchor box 10, the length of the lower support frame 6 is greater than the diameter of the circular hole 1001, the screw 5 is threadedly connected to the driving block 7 above the upper support frame 4 and below the lower support frame 6, the top of the screw 5 is fixedly connected to the handle 8, and the handle 8 is a square steel pipe.

[0027] In this embodiment, the door-shaped bracket includes: a crossbar 1, a vertical bar 2 and a bottom plate 3. There are two crossbars 1 and two bottom plates 3, and four vertical bars 2 are provided. The two crossbars 1 are arranged parallel to each other with a gap between them. The bottom ends of the left and right sides of the two crossbars 1 are respectively fixedly connected with four vertical bars 2. The bottom ends of the two vertical bars 2 on the same side are fixedly connected with the top of a bottom plate 3 on the same side. The crossbars 1 and the vertical bars 2 are all made of ordinary steel pipes with a diameter of Φ48.3*3.6mm, and the bottom plate 3 is 10mm thick. Q235b steel plate; the crossbar 1 and the vertical pole 2 as well as the vertical pole 2 and the bottom plate 3 are fixed by welding; the welding requires full welding, and the Φ3.2mm J425 low-carbon steel welding rod is used during the welding process. The weld width is required to be 2mm on each side of the groove edge, and the weld height is not lower than the surface of the parent material; use a T0T0190A electric welding machine (or other electric welding machines that can meet the current standards), and it is recommended to use a 98-128A rated current and a Φ16 welding handle wire to meet the welding requirements.

[0028] In this embodiment, support feet 9 are provided at the four corners of the bottom end of the bottom plate 3 to facilitate stable contact with the wall concrete.

[0029] In this embodiment, the driving block 7 is composed of a contact portion, a connecting portion and a driving portion. The contact portion is an equilateral triangle, and a connecting portion is integrally formed in the middle of the top of the contact portion. A threaded hole is opened in the middle of the connecting portion, and the screw 5 passes through and is threadedly connected in the threaded hole. The driving portion is three vertical protrusions fixedly connected to the triangle of the contact portion. The driving block 7 can be driven to rotate by hitting the vertical protrusions with a hammer; a hexagonal nut-shaped protrusion is provided on the upper part of the connecting portion, and the driving block 7 can also be driven to rotate by twisting the hexagonal nut-shaped protrusion with a wrench.

[0030] In this embodiment, the upper support frame 4 is M-shaped, and the two notches below the upper support frame 4 are respectively clamped on the two cross bars 1. The top surface of the upper support frame 4 is a plane, and the bottom end of the contact portion of the upper driving block 7 contacts and cooperates with the top surface of the upper support frame 4. A through-hole 1 is provided in the middle of the top of the upper support frame 4, and the size of the through-hole 1 matches the size of the screw 5; the lower support frame 6 is a square steel pipe, and a through-hole 2 matching the screw 5 is provided in the middle of the lower support frame 6, and the top end of the contact portion of the lower driving block 7 contacts and cooperates with the bottom end surface of the lower support frame 6.

[0031] When the device is in use, first pass the screw 5 through the upper support frame 4, the lower support frame 6 and the two drive blocks 7 in sequence, then pass the screw 5 through the gap between the two cross bars 1, and clamp the upper support frame 4 to the top of the two cross bars 1, place the lower support frame 6 into the prestressed anchor box 10, and place the door-shaped bracket on the surface of the wall concrete 11, then adjust the position of the screw 5, adjust the contact surface between the top inner surface of the prestressed anchor box 10 and the lower support frame 6 so that they can fully contact, then use external force to knock or rotate the hexagonal nut-shaped protrusion to make the lower support frame receive a force toward the outside of the wall, and then completely remove the prestressed anchor box 10. The entire device can effectively reduce the loss rate during the removal of the prestressed anchor box 10, and further reduce damage to the material during the removal process.

[0032] In the description of the present invention, it should be noted that the terms "upper", "lower", "left", "right", "inside", "outside", "top / bottom", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0033] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Any simple modification, equivalent replacement and improvement made by any technician familiar with the profession to the above embodiment without departing from the scope of the technical solution of the present invention and based on the technical essence of the present invention shall still fall within the scope of protection of the technical solution of the present invention.

Claims

1. A device for quickly removing a prestressed anchor box from a storage tank, comprising: A prestressed anchor box (10) and wall concrete (11), wherein the prestressed anchor box (10) is embedded and fixed in the wall concrete (11), wherein the interior of the prestressed anchor box (10) is hollow and a circular hole (1001) is opened at the top, and the prestressed anchor box (10) is characterized in that it also includes: a door-shaped bracket, an upper support frame (4), a screw (5), a lower support frame (6), a drive block (7) and a handle (8), wherein the door-shaped bracket is erected above the prestressed anchor box (10), and the bottom end of the door-shaped bracket contacts and cooperates with the wall concrete (11), and the door An upper support frame (4) is provided at the middle of the top of the type bracket, the screw rod (5) passes through the upper support frame from top to bottom and extends into the interior of the prestressed anchor box (10) through the circular hole (1001), the screw rod (5) is sleeved with a lower support frame (6) inside the prestressed anchor box (10), the length of the lower support frame (6) is greater than the diameter of the circular hole (1001), the screw rod (5) is threadedly connected to a driving block (7) above the upper support frame (4) and below the lower support frame (6), and the top of the screw rod (5) is fixedly connected to a handle (8).

2. The device for quickly removing a prestressed anchor box from a storage tank according to claim 1, characterized in that: The door-shaped bracket comprises: a crossbar (1), a vertical bar (2) and a bottom plate (3); two crossbars (1) and two bottom plates (3) are each provided; four vertical bars (2) are provided; the two crossbars (1) are arranged in parallel front and back with a gap between them; the bottom ends of the left and right sides of the two crossbars (1) are respectively fixedly connected to the four vertical bars (2); the bottom ends of the two vertical bars (2) on the same side are both fixedly connected to the top end of a bottom plate (3) on the same side.

3. The device for quickly removing a prestressed anchor box from a storage tank according to claim 2, characterized in that: The crossbar (1) and the vertical bar (2) are both made of ordinary steel pipes with a diameter of 48.3*3.6 mm, and the bottom plate (3) is a Q235b steel plate with a thickness of 10 mm; the crossbar (1) and the vertical bar (2), as well as the vertical bar (2) and the bottom plate (3), are both fixed by welding.

4. The device for quickly removing a prestressed anchor box from a storage tank according to claim 2, characterized in that: Support feet (9) are provided at the four corners of the bottom end of the base plate (3).

5. The device for quickly removing a prestressed anchor box from a storage tank according to claim 3, characterized in that: The driving block (7) is composed of a contact portion, a connecting portion and a driving portion. The contact portion is an equilateral triangle. The middle portion of the top of the contact portion is integrally formed with a connecting portion. A threaded hole is provided in the middle of the connecting portion. The screw (5) passes through and is threadedly connected in the threaded hole. The driving portion is three vertical protrusions fixedly connected to the triangle of the contact portion.

6. The device for quickly removing a prestressed anchor box from a storage tank according to claim 5, characterized in that: The upper support frame (4) is M-shaped, and the two notches below the upper support frame (4) are respectively connected to the two cross bars (1). The top surface of the upper support frame (4) is a plane, and the bottom end of the contact portion of the upper driving block (7) contacts and cooperates with the top surface of the upper support frame (4). A through hole is opened in the middle of the top of the upper support frame (4), and the size of the through hole matches the size of the screw (5).

7. The device for quickly removing a prestressed anchor box from a storage tank according to claim 5, characterized in that: The lower support frame (6) is a square steel tube, and a through hole two is provided in the middle of the lower support frame (6) to match the screw rod (5). The top of the contact portion of the lower driving block (7) contacts and matches with the bottom end surface of the lower support frame (6).

8. The device for quickly removing a prestressed anchor box from a storage tank according to claim 5, characterized in that: A hexagonal nut-shaped protrusion is provided on the upper portion of the connecting portion.

9. The device for quickly removing a prestressed anchor box from a storage tank according to claim 1, characterized in that: The handle (8) is a square steel tube.

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