Lifting device for lower-layer reinforcing steel bars under plate bottom

Abstract

The utility model provides a lifting device for lower-layer steel bars under a plate bottom, which belongs to the technical field of building construction tools, and comprises a rack main body, the rack main body comprises four steel frames which are sequentially connected end to end, and the four steel frames define a rectangle; the supporting assembly comprises four supporting columns with the same height, and the four supporting columns are arranged at the four corners of the bottom side of the rack body correspondingly; the rolling shaft assembly comprises two rolling wheels, the two rolling wheels are rotationally arranged on the two steel frames on the symmetrical sides of the rack body respectively, the two rolling wheels are parallel, a connecting rod is jointly connected between the two rolling wheels, and any rolling wheel is provided with a locking structure; the pry bar is arranged on the connecting rod and is parallel to the supporting column, the top of the pry bar extends to the position above the rack body, and the bottom of the pry bar is bent to form a hook. The device replaces traditional manual lifting and lowering of the lower layer reinforcing steel bar, safety is high, more labor is saved due to the pinch bar pressing mode, and convenience is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction tools, in particular to a device for lifting steel bars in the lower layer of a slab bottom. Background Art

[0002] Floor slab generally refers to a kind of concrete prefabricated part processed and produced by the prefabrication yard. It divides the house into several layers in the vertical direction and transmits the vertical load of people and furniture and the weight of the floor slab to the foundation through walls, beams or columns. According to the materials used, it can be divided into several forms such as wooden floor slab, brick arch floor slab, reinforced concrete floor slab and steel lining load-bearing floor slab.

[0003] During the construction of reinforced concrete floor slabs, it is necessary to support the formwork and build double layers of steel bars (upper and lower steel bars) on the formwork. In order to prevent the lower steel bars from being close to the bottom of the formwork and causing the steel bars to be exposed at the bottom of the formed floor slab, it is necessary to place pads between the lower steel bars and the formwork. In the prior art, the pads are mainly placed by manually lifting and lowering the lower steel bars, but due to the heavy weight of the lower steel bars, there is a problem of difficulty in placement. Utility Model Content

[0004] The utility model aims to provide a device for lifting the lower layer of steel bars at the bottom of a slab, aiming to solve the technical problems in the above-mentioned background technology.

[0005] The utility model is achieved in this way:

[0006] The technical solution of the present application provides a device for lifting steel bars in the lower layer of a slab, comprising:

[0007] The platform body comprises four steel frames connected end to end in sequence, and the four steel frames form a rectangle;

[0008] A support assembly, the support assembly comprising four support columns of equal height, the four support columns being respectively arranged at four corners of the bottom side of the platform body;

[0009] A roller assembly, wherein the roller assembly comprises two rollers, the two rollers are respectively rotatably arranged on two steel frames on a symmetrical side of the platform body, and the two rollers are parallel, a connecting rod is commonly connected between the two rollers, and any of the rollers is provided with a locking structure;

[0010] A pry bar, wherein the pry bar is arranged on the connecting rod and is parallel to the supporting column. The top of the pry bar extends to above the platform body, and the bottom of the pry bar is bent to form a hook.

[0011] A further technical solution is that the locking structure comprises a locking groove arranged on the outer ring surface of the roller, the number of the locking grooves is multiple, and the multiple locking grooves are arranged at intervals along the circumferential direction of the roller;

[0012] Among them, the above-mentioned locking structure also includes a locking pin rod that can be plugged and matched with the above-mentioned locking groove. After the above-mentioned roller rotates in a directional manner, when the above-mentioned locking pin rod and one of the above-mentioned locking grooves are plugged and matched, the above-mentioned locking pin rod and the above-mentioned steel frame abut and cooperate, and limit the reverse rotation of the above-mentioned roller.

[0013] A further technical solution is that the steel frame is provided with a rotation groove adapted to the rotation of the roller.

[0014] A further technical solution is that any of the above-mentioned support columns is a telescopic rod.

[0015] A further technical solution is that the pry bar includes a first rod body arranged on the connecting rod, the top of the first rod body extends to the top of the platform body, the bottom of the first rod body extends to the bottom of the platform body, and is telescopically matched with a second rod body;

[0016] Wherein, the bottom of the second rod body is bent to form the hook.

[0017] A further technical solution is that a telescopic groove is provided at the lower end of the first rod body, the second rod body is telescopically matched with the telescopic groove, and the second rod body is provided with a bolt group for adjusting its positioning.

[0018] A further technical solution is that the connecting rod is slidably provided with a connecting piece, and the connecting piece can slide in the axial direction of the connecting rod, and the pry bar is provided on the connecting piece;

[0019] Wherein, the connecting rod is provided with an external thread, the connecting rod thread is matched with two nuts, and the two nuts are respectively located at two ends of the connecting piece.

[0020] A further technical solution is that the connecting rod is axially provided with a guide slot, and the connecting piece is provided with a sliding block that is slidably matched with the guide slot.

[0021] Compared with the prior art, the technical solution of the present invention has at least the following advantages or beneficial effects:

[0022] When the utility model is in use, the main body of the platform is placed above the double-layer steel bars, so that the four support columns pass through the gap area of ​​the double-layer steel bars and abut against the formwork; the hook is hooked on the lower steel bars, and the top of the pry bar is pressed. The pry bar rotates with the connecting rod and lifts the lower steel bars. Finally, the roller is locked in position through the locking structure, and a cushion block can be placed between the lower steel bars and the formwork. The application replaces the traditional manual lifting and lowering of the lower steel bars, which is safer, and the pry bar pressing type is more labor-saving and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solution of the implementation mode of the utility model, the drawings required for use in the implementation mode will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The utility model provides a slab bottom lower layer steel bar lifting device. Figure 1 ;

[0025] Figure 2 The utility model provides a slab bottom lower layer steel bar lifting device. Figure 2 ;

[0026] Figure 3 yes Figure 2 A partial enlarged view of middle A;

[0027] Figure 4 It is a cross-sectional view of the pry bar of the utility model.

[0028] Icon: 1-support column, 2-stand body, 3-pry bar, 301-first rod body, 302-second rod body, 4-locking pin rod, 5-roller, 6-locking groove, 7-rotation groove, 8-connecting rod, 9-hook, 10-connecting piece, 11-nut, 12-guide slide groove, 13-telescopic groove. DETAILED DESCRIPTION

[0029] In order to make the purpose, technical solution and advantages of the implementation mode of the present invention clearer, the technical solution in the implementation mode of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the implementation mode of the present invention. Example

[0030] Reference Figure 1The present embodiment provides a lifting device for the lower layer of steel bars at the bottom of the plate, which includes four steel frames, which are connected end to end to form a rectangular platform body 2, and any two adjacent steel frames in the four steel frames are connected by welding to achieve rapid prototyping of the platform body 2. A support assembly for supporting the platform body 2 is arranged on the lower side of the platform body 2, and the support assembly is composed of four support columns 1 of equal height, and the four support columns 1 are respectively located at the four corners of the platform body 2. A roller assembly is arranged on the inner side of the platform body 2, and the roller assembly includes two rollers 5, and the two rollers 5 are respectively rotated and arranged on two steel frames on a symmetrical side of the platform body 2, and the two rollers 5 are parallel, and a connecting rod 8 is commonly connected between the two rollers 5, and any of the rollers 5 is provided with a locking structure; wherein, the lifting device also includes a pry bar 3, the pry bar 3 is arranged on the connecting rod 8, and the pry bar 3 is parallel to the support column 1, the top of the pry bar 3 extends to the top of the platform body 2, and the bottom of the pry bar 3 is bent to form a hook 9.

[0031] When the utility model is in use, the stand body 2 is placed above the double-layer steel bars, so that the four support columns 1 pass through the gap area of ​​the double-layer steel bars and abut against the formwork; the hook 9 is hooked on the lower steel bars, and the top of the pry bar 3 is pressed, and the pry bar 3 rotates with the connecting rod 8 and lifts the lower steel bars, and finally the roller 5 is locked in position through the locking structure, and a cushion block can be placed between the lower steel bars and the formwork. The present application replaces the traditional manual lifting and lowering of the lower steel bars, which is safer, and the pressing type of the pry bar 3 is more labor-saving and convenient.

[0032] In some embodiments of the present invention, the steel frame is provided with a rotation groove 7 adapted to the rotation of the roller 5, and the two ends of the rotation groove 7 respectively penetrate the upper side and the lower side of the steel frame, and the locking structure comprises a locking groove 6 provided on the outer ring surface of the roller 5, and the number of the locking grooves 6 is multiple, and the multiple locking grooves 6 are spaced apart along the circumferential direction of the roller 5;

[0033] Among them, the above-mentioned locking structure also includes a locking pin rod 4 that can be plugged and matched with the above-mentioned locking groove 6. After the above-mentioned roller 5 rotates in a directional manner, when the above-mentioned locking pin rod 4 and one of the above-mentioned locking grooves 6 are plugged and matched, the above-mentioned locking pin rod 4 and the above-mentioned steel frame abut and match, and limit the above-mentioned roller 5 from rotating in the opposite direction.

[0034] In the above embodiment, the roller 5 is arranged in the rotation groove 7, and the roller 5 and the rotation groove 7 are rotationally connected by an axis, and the width of the rotation groove 7 is slightly larger than the diameter of the roller 5 to accommodate the rotation of the roller 5. After the roller 5 rotates to a proper position in a certain direction (at this position, the pry bar 3 moves the lower layer of steel bars to be lifted to the pad), the locking pin rod 4 is inserted into the locking groove 6 on the upper side of the roller 5, and the locking pin rod 4 abuts against the steel frame, which can limit the reverse rotation of the roller 5, so as to achieve the locking and positioning of the pry bar 3.

[0035] Reference Figure 2-Figure 4 In some embodiments of the present invention, any of the above-mentioned support columns 1 is a telescopic rod.

[0036] In the above embodiment, the support column 1 is a telescopic rod that can realize the height adjustment of the stand body 2, adapt to different installation scenarios, and have a wider practical range. The telescopic rod can be a manual telescopic rod or an electric telescopic rod.

[0037] In some embodiments of the present invention, the pry bar 3 includes a first rod 301 disposed on the connecting rod 8, the top of the first rod 301 extends above the platform body 2, the bottom of the first rod 301 extends below the platform body 2, and is telescopically matched with a second rod 302;

[0038] The bottom of the second rod 302 is bent to form the hook 9 .

[0039] In the above embodiment, the telescopic cooperation between the first rod 301 and the second rod 302 can realize the height adjustment of the hook 9 to adapt to the height adjustment of the stand body 2, which is more flexible, has a wider range of use, and is more practical.

[0040] In some embodiments of the present invention, a telescopic slot 13 is provided at the lower end of the first rod 301 , the second rod 302 is telescopically matched with the telescopic slot 13 , and the second rod 302 is provided with a bolt group for adjusting its positioning.

[0041] In the above embodiment, the telescopic groove 13 includes a first slide groove arranged in the first rod body 301, the first slide groove is arranged along the axial direction of the first rod body 301, and the bottom end of the first slide groove passes through the bottom side of the first rod body 301, and a second slide groove is axially arranged on the ring side of the first rod body 301, and the second slide groove is connected to the first slide groove, the diameter of the second slide groove is smaller than the first slide groove, and the second slide groove is used for the screw rod of the bolt group to pass through, and the nut 11 is located on the outside of the second slide groove to realize the locking of the second rod body 302 after sliding.

[0042] In some embodiments of the present invention, the connecting rod 8 is slidably provided with a connecting piece 10, and the connecting piece 10 can slide in the axial direction of the connecting rod 8, and the pry bar 3 is provided on the connecting piece 10;

[0043] The connecting rod 8 is provided with an external thread, and the connecting rod 8 is threadedly matched with two nuts 11 , and the two nuts 11 are respectively located at two ends of the connecting member 10 .

[0044] In the above embodiment, after the connecting member 10 slides on the connecting rod 8, it drives the pry bar 3 to slide on the connecting rod 8 to adjust the position of the hook 9, and then the connecting member 10 is locked and positioned by two nuts 11.

[0045] Furthermore, the connecting member 10 is a cylinder, which is sleeved on the connecting rod 8 .

[0046] In some embodiments of the present invention, the connecting rod 8 is axially provided with a guide slot 12 , and the connecting member 10 is provided with a sliding block that slidably cooperates with the guide slot 12 .

[0047] In the above embodiment, the sliding cooperation between the guide slot 12 and the sliding block can improve the stability of the directional sliding of the connecting member 10 on the connecting rod 8.

[0048] The above description is only the preferred implementation of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for lifting steel bars in the lower layer of a slab, characterized in that: include: A platform body (2), the platform body (2) comprising four steel frames connected end to end in sequence, and the four steel frames form a rectangle; A support assembly, the support assembly comprising four support columns (1) of equal height, the four support columns (1) being respectively arranged at four corners of the bottom side of the platform body (2); A roller assembly, the roller assembly comprising two rollers (5), the two rollers (5) being rotatably arranged on two steel frames on a symmetrical side of the platform body (2), and the two rollers (5) being parallel, a connecting rod (8) being commonly connected between the two rollers (5), and any of the rollers (5) being provided with a locking structure; A pry bar (3), wherein the pry bar (3) is arranged on the connecting rod (8), and the pry bar (3) is parallel to the supporting column (1), the top of the pry bar (3) extends to the top of the platform body (2), and the bottom of the pry bar (3) is bent to form a hook (9).

2. The device for lifting steel bars in the lower layer of a slab according to claim 1, characterized in that: The locking structure comprises a locking groove (6) arranged on the outer ring surface of the roller (5), the locking groove (6) being multiple in number, and the multiple locking grooves (6) being arranged at intervals along the circumferential direction of the roller (5); The locking structure further comprises a locking pin rod (4) which can be plugged into and matched with the locking groove (6). After the roller (5) is directional rotated, when the locking pin rod (4) and one of the locking grooves are plugged into and matched with each other, the locking pin rod (4) and the steel frame abut against each other and restrict the roller (5) from rotating in the opposite direction.

3. The device for lifting steel bars in the lower layer of a slab according to claim 2, characterized in that: The steel frame is provided with a rotation groove (7) adapted to rotate the roller (5).

4. A device for lifting steel bars in the lower layer of a slab according to any one of claims 1 to 3, characterized in that: Any of the support columns (1) is a telescopic rod.

5. The device for lifting steel bars in the lower layer of a slab according to claim 4, characterized in that: The pry bar (3) comprises a first rod body (301) arranged on the connecting rod (8), the top of the first rod body (301) extends to the top of the platform body (2), the bottom of the first rod body (301) extends to the bottom of the platform body (2), and is telescopically matched with a second rod body (302); Wherein, the bottom of the second rod (302) is bent to form the hook (9).

6. The device for lifting steel bars in the lower layer of a slab according to claim 5, characterized in that: The lower end of the first rod body (301) is provided with a telescopic slot (13), the second rod body (302) is telescopically matched with the telescopic slot (13), and the second rod body (302) is provided with a bolt group for adjusting its positioning.

7. The device for lifting steel bars in the lower layer of a slab according to claim 6, characterized in that: The connecting rod (8) is slidably provided with a connecting piece (10), and the connecting piece (10) is capable of sliding in the axial direction of the connecting rod (8), and the pry bar (3) is provided on the connecting piece (10); The connecting rod (8) is provided with an external thread, the connecting rod (8) is threadedly matched with two nuts (11), and the two nuts (11) are respectively located at two ends of the connecting piece (10).

8. The device for lifting steel bars in the lower layer of a slab according to claim 7, characterized in that: The connecting rod (8) is axially provided with a guide slot (12), and the connecting piece (10) is provided with a sliding block that is slidably matched with the guide slot (12).

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