Turnover and adjustable post-cast strip supporting device

Abstract

The utility model belongs to the technical field of constructional engineering, and particularly relates to a turnover and adjustable post-cast strip supporting device. The post-cast strip supporting device comprises a supporting plate, a supporting stand column, a supporting column cylinder, a positioning piece, a base plate and a jacking device. The supporting plate is arranged below the post-cast strip beam to be supported; the supporting stand column is fixedly arranged below the base plate and extends in the vertical direction, the lower end of the supporting stand column is inserted into the supporting column barrel, and the longitudinal position, relative to the supporting column barrel, of the supporting stand column is locked through the positioning piece. The base plate is fixedly arranged below the supporting column casing; the jacking device is fixedly arranged below the base plate, and the lower end of the jacking device is fixedly connected to a post-cast strip bottom plate. The supporting and fixing device can effectively support post-cast strip beams in projects with different floor heights, the defect that a traditional post-cast strip support occupies a large number of construction materials such as steel pipes and battens for a long time is overcome, and the supporting and fixing device is convenient and fast to install and high in economic practicability.

Description

Technical Field

[0001] The utility model belongs to the technical field of construction engineering, and in particular relates to a rotatable and adjustable post-casting strip supporting device. Background Art

[0002] To effectively prevent harmful cracks in cast-in-place reinforced concrete structures caused by shrinkage or uneven settlement during the construction of ultra-long buildings, post-cast joints are often installed at intervals. However, before the post-cast joints are closed, the beams and slabs on both sides are cantilevered components. To minimize deformation of the cantilevered components, temporary supports are required.

[0003] Traditionally, the cantilever beams and slabs on both sides of the post-casting strip are supported by a steel pipe scaffolding support system. However, the support frames on both sides of the post-casting strip are heavily covered, and the installation workload is large. In addition, the design requires that the concrete pouring and closure of the post-casting strip must be carried out more than 60 days after the main structure is capped. The post-casting strip can only be removed after it is completely closed and the concrete strength reaches the design requirements. This results in a low turnover rate of materials such as steel pipe scaffolding and wooden planks supporting the strips on both sides, increasing economic costs.

[0004] Secondly, the support method and stability are greatly affected by human factors. The quality of workers directly affects the quality of the frame erection, resulting in arbitrary support standards. Before each support, square timber needs to be processed and matching steel pipes need to be selected in advance, which consumes labor costs, slows the erection speed and has poor stability, posing a great safety hazard.

[0005] Furthermore, steel pipes were used to support the post-cast strips. The erected frame would occupy the construction corridors on the floors, compromising construction convenience. Furthermore, the use of steel pipe frames and wooden planks could easily lead to the littering of materials on site, compromising safe and civilized construction. After completion, the reinforcement materials would need to be sorted and transported again, resulting in high construction costs. Utility Model Content

[0006] In response to the shortcomings of the existing technology, the utility model provides a reusable and adjustable post-cast strip support device. This support device meets the force requirements of the beam and slab support at the post-cast strip position, is simple to operate, easy and quick to install, has a stable and reliable support method, and can be produced on a factory scale, thus achieving standardization of construction technology; while improving construction efficiency, construction safety is effectively guaranteed, solving the problem that traditional post-cast strip supports occupy a large amount of steel pipes, wooden squares and other construction materials for a long time; it can be used in projects with different floor heights, effectively reducing the loss of materials caused by the original process, reducing the cost of use, and being economical and practical; the supporting scaffolding and formwork of the beam and slab concrete can be removed after reaching the specified strength, leaving only the tool-type support of the post-cast strip, thereby effectively improving the turnover rate of large-area formwork, square timber, steel pipes and other materials, saving construction costs.

[0007] Specifically, the present invention provides the following technical solutions:

[0008] A rotatable and adjustable post-casting strip support device, comprising: a support plate, a support column, a support column tube, a positioning piece, a pad and a jacking device;

[0009] The support plate is arranged below the post-casting beam to be supported;

[0010] The support column is fixedly arranged below the pad and extends in the vertical direction, and the lower end thereof is inserted into the support column tube;

[0011] The support column is provided with a plurality of positioning holes along the height direction, and the upper portion of the support column barrel is provided with a fixing hole; the positioning member includes a T-bolt, and the T-bolt can selectively pass through one of the positioning holes and the fixing hole, thereby locking the longitudinal position of the support column relative to the support column barrel;

[0012] The pad is fixedly arranged below the support column;

[0013] The jacking device is fixedly arranged below the pad, and the lower end thereof is fixedly connected to the bottom plate of the post-casting strip.

[0014] The utility model provides a rotatable and adjustable post-cast strip support device, in which the support tray is installed on the support column to support the post-cast strip cantilever beam. At the same time, the height of the support column can be adjusted through the positioning holes on the support column. Therefore, when supporting the post-cast strips on floors of different heights, there is no need to customize the selection of column supports, and the height of the support device can be fine-tuned through the jacking device at the bottom, thereby greatly improving the practicality of the column for supporting the post-cast strip.

[0015] When supporting the post-cast strip, first measure and determine the position of the beam that the post-cast strip needs to support and mark it, and then fix the jacking device to the base plate with expansion screws. After the jacking device is fixed, start to assemble the support column tube and the support column. Select the appropriate positioning hole at the pre-determined calculated height on the support column and fix it with positioning bolts. After the installed support parts are assembled, connect them to the jacking device at the bottom, and the entire post-cast strip support device is installed. Due to the large spacing between the positioning holes, it cannot be guaranteed that the support plate is in close contact with the beam at the support position. This requires the bottom jacking device to accurately adjust the support column so that the post-cast strip is at the optimal support height, that is, the support plate at the top of the support device is flush with the bottom elevation of the beam, which greatly improves the practicality of the column used to support the post-cast strip.

[0016] Preferably, a reinforcing rib is provided between the support plate and the support column to ensure that the support plate is evenly and firmly stressed.

[0017] Preferably, the support plate, support column, support column tube, positioning piece, pad and jacking device are all made of steel.

[0018] Preferably, the length of the lower end of the supporting column inserted into the supporting column tube is not less than 200 mm.

[0019] Preferably, the positioning member further comprises a latch and a buckle. The end of the T-bolt is provided with a through hole, and the end of the latch is provided with a through hole. After the latch passes through the through hole of the T-bolt 41, the buckle passes through the through hole at the end of the latch, preventing the latch from slipping out of the T-bolt. The positioning member ensures a firm connection between the support column and the support column tube, preventing the support column from slipping out of the support bamboo tube.

[0020] Preferably, the jacking device comprises: an upper U-shaped channel steel movable support, a movable support frame, a rotating shaft, a lower U-shaped channel steel fixed support, a base, a rotating handle, and a self-locking threaded rod;

[0021] The outer surface of the self-locking threaded rod is threadedly connected to two rotating shafts with opposite threads; the rotating shafts are rotatably connected to the upper U-shaped channel steel movable support and the lower U-shaped channel steel fixed support respectively through the movable support frame;

[0022] A rotating handle is installed on one side of the self-locking threaded rod;

[0023] The lower end of the lower U-shaped channel steel fixed support is fixedly connected to the base.

[0024] During the installation process of the fixing device of the utility model, the height of the support device is finally fine-tuned by rotating the self-locking threaded rod of the jacking device, so that the support plate is in close contact with the bottom of the beam of the post-cast strip to be supported, thereby fundamentally solving the problem of fine-tuning the support height, greatly increasing the adaptability of the support device, and facilitating the removal and turnover of the steel pipe support. After the construction is completed, the height of the support device can be lowered by rotating the self-locking threaded rod, so that the device can be removed from the post-cast strip position and used in a turnover manner.

[0025] The utility model provides a rotatable and adjustable post-casting strip support device, which has at least the following beneficial effects:

[0026] 1) Construction efficiency: The post-casting strip support device is easy and quick to install, avoiding the traditional manual erection of a large number of steel pipe frames, thereby effectively improving the turnover rate of large-area formwork, square timber, steel pipes and other materials, saving construction costs;

[0027] 2) Construction quality: The post-casting belt support device can effectively support the post-casting belt beam, meet the support force requirements of the beam and slab at the post-casting belt position, and has high support reliability;

[0028] 3) Cost reduction and efficiency improvement: The post-casting strip support device is easy to manufacture, has adjustable support height, and can be used in a revolving manner. It has wide applicability and can be operated safely and reliably with just a wrench. The process is simple and improves construction efficiency.

[0029] 4) Green construction: The post-casting strip support device is made of all-steel and is reusable, saving wood and avoiding waste of wood, which is in line with the green construction and environmental protection concept. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is the front view of the post-cast strip support device.

[0031] Figure 2 for Figure 1 A partial enlarged view of .

[0032] Figure 3 It is a structural diagram of the jacking device.

[0033] Figure 4 This is the elevation view of the post-cast strip support device.

[0034] Figure 5 Schematic diagram of the structure of the shaft (above) and the 1-1 cross-sectional view (below).

[0035] Figure 6 It is a structural schematic diagram of the upper U-channel steel movable support (above), a structural schematic diagram of the U-channel steel support shaft (lower left), and a structural schematic diagram of the matching nut (lower right).

[0036] Among them, 1. Support plate; 2. Reinforcement ribs; 3. Support column; 4. Positioning piece; 5. Support column; 6. Pad; 7. Lifting device; 8. Positioning hole; 9. Fixing hole; 41. T-bolt; 42. Pin; 43. Buckle; 71. Upper U-shaped channel steel movable support; 72. Movable support frame; 73. Rotating shaft; 74. Lower U-shaped channel steel fixed support; 75. Base; 76. Rotating handle; 77. Self-locking threaded rod; 78. Anchor hole; 711. Positioning hole; 712. Support hole. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention are clearly and completely described below. The following embodiments are used to illustrate the present invention but are not intended to limit the scope of the present invention. If no specific techniques or conditions are specified in the embodiments, the techniques or conditions described in the literature in the field or the product instructions shall be followed.

[0038] Example 1

[0039] Example 1 provides a revolvable and adjustable post-casting strip support device, see Figure 1-Figure 4 It consists of a supporting plate 1, a reinforcing rib 2, a supporting column 3, a positioning piece 4, a supporting column tube 5, a pad 6 and a jacking device 7.

[0040] The support plate 1 has a thickness of 10 mm and a cross-sectional size of 300*300 mm and is located below the post-cast strip beam to be supported.

[0041] The support plate 1 is welded to the center of the top of the support column 3, thereby being fixedly installed below the base plate and extending vertically. Its bottom is inserted into the support column tube 5 by no less than 200mm. To ensure that the support plate 1 is evenly and stably stressed, a reinforcing rib 2 is installed between the support plate 1 and the support column 3. The reinforcing rib 2 is welded to the support plate 1 and the support column 3 respectively.

[0042] The support columns 3 and support column tubes 5 are both made of 4mm thick seamless steel pipes and are 1800mm long. The support column tubes 5 are one size larger than the support columns 3, namely, the support column tubes are DN125, while the support columns are DN100. Six 20mm diameter positioning holes 8 are drilled in the support columns 3 at 200mm intervals along their height, with the lowest positioning hole 8 located 300mm from the bottom of the support column 3. A 20mm diameter fixing hole 9 is drilled in the support column tubes 5 at 100mm from the top.

[0043] When the length of the support column 3 extending into the support column tube 5 is determined, it is fixed in time with the positioning piece 4, which is composed of a T-bolt 41, a latch 42, and a buckle 43. The T-bolt 41 passes through one of the positioning holes 8 and through the fixing hole 9, thereby locking the longitudinal position of the support column 3 relative to the support column tube 5; a through hole is provided at the end of the T-bolt 41, and a through hole is provided at the end of the latch 42. After the latch 42 passes through the through hole of the T-bolt 41, the buckle 43 passes through the through hole at the end of the latch 42 to prevent the latch 42 from slipping out of the T-bolt 41; the buckle 43 is made of fine steel. After the buckle 43 passes through, bend one side of the buckle 43 to 45° to lock the latch 42.

[0044] The bottom of the support column 5 is welded with a pad 6, the thickness of the pad 6 is 10 mm, and the cross-sectional size is 200*200 mm. It is required that the weld height of the components connected by welding shall not be lower than the plate thickness.

[0045] The jacking device 7 is composed of an upper U-shaped channel steel movable support 71, a movable support frame 72, a rotating shaft 73, a lower U-shaped channel steel fixed support 74, a base 75, a rotating handle 76, and a self-locking threaded rod 77.

[0046] The self-locking threaded rod 77 is made of 8-grade M20 high-strength black full-thread threaded rod, with a length of 40 cm and a rotating handle 76 welded to the end of the self-locking threaded rod 77 to facilitate adjustment of the threaded rod. The outer surface of the self-locking threaded rod 77 is threadedly connected to two rotating shafts 73 with opposite threads.

[0047] The structure of the rotating shaft 73 is as follows Figure 5 As shown, a threaded hole is provided in the middle for installing a self-locking threaded rod 77, and the inner threads of the threaded holes of the two matching rotating shafts 73 are opposite, so that the self-locking threaded rod 77 can be rotated to adjust the height of the jacking device; the two sides of the rotating shaft 73 are rotatably connected to the movable support frame 72 and fixed with matching nuts to prevent the movable support frame 72 from slipping out of the rotating shaft.

[0048] The movable support frame 72 is made of 15mm thick steel plate, with a total of 4 pieces made, each with a cross-sectional size of 50mm*220mm, and both ends are processed into arc shapes. At the same time, holes with a diameter of M20 are drilled 20mm away from the ends on both sides for rotating the connecting shaft 73 and the upper U-shaped channel steel movable support 71 / lower U-shaped channel steel fixed support 74;

[0049] The specifications of the upper U-shaped channel steel movable support 71 and the lower U-shaped channel steel fixed support 74 are both 20#, with a wall thickness of 7mm and a wall height of 7.3cm. Holes with a diameter of M20 are also drilled on them. The upper U-shaped channel steel movable support 71 and the lower U-shaped channel steel fixed support 74 are rotatably connected to the movable support frame 72 through the U-shaped channel steel support rotating shaft.

[0050] The structure of the upper U-shaped channel steel movable support 71 is as follows Figure 6 As shown, support holes 712 and positioning holes 711 are provided. The size of support holes 712 matches the drilled holes of the U-shaped channel steel support shaft and the movable support frame 72. The positioning holes 711 are connected to the upper pad 6 via M16 bolts. The above components are fixed and locked with matching nuts.

[0051] The lower U-shaped channel steel fixed support 74 is provided with only support holes for rotational connection to the movable support frame 72 and is fixed to the base 75 by welding. The base 75 is made of steel plate with a wall thickness of 10mm and a cross-sectional size of 300*300mm. Anchor holes 78 with a diameter of 16 are drilled in the four corners of the base 75 for fixing to the concrete base plate with M16 expansion bolts, ensuring the stability and reliability of the post-cast strip support device after installation.

[0052] 1. The steps of supporting the post-cast strip using the post-cast strip supporting device provided in Example 1 are as follows:

[0053] 1. First, measure and determine the position of the beam that needs to be supported by the post-casting belt and mark it. Then drill fixing holes on the concrete base plate and fix the jacking device 7 to the concrete base plate with M16 expansion screws.

[0054] 2. After the jacking device 7 is fixed, start assembling the support column 5 and the support column 3. At the same time, select the appropriate positioning hole based on the pre-determined calculated support height and fix it with the positioning piece 4. After the T-bolt 41 of the positioning piece 4 passes through the fixing hole of the support column 5 and the positioning hole of the support column 3, it is promptly locked with a latch 42 and fixed with a buckle 43 to prevent the T-bolt 41 from slipping out of the positioning hole. The length of the support column 3 extending into the support column 4 is not less than 200mm; the bottom of the support column 5 is welded to the backing plate 6.

[0055] 3. After assembling the installed support components, connect them to the lower jacking device 7 with M16 bolts. This completes the installation of the entire post-casting strip support device. Due to the 200mm spacing between the positioning holes, it is not possible to ensure that the support plate 1 on the top of the support column 3 is in close contact with the beam at the support position. This requires the bottom jacking device 7 to accurately adjust the height.

[0056] 4. The jacking device 7 adjusts the height of the movable support frame 72 by rotating the self-locking threaded rod 77. During the adjustment of the self-locking threaded rod 77, pay attention to the verticality of the entire support device to avoid tilting and uneven force. At the same time, the height range of the jacking device 7 can be controlled within 200mm. When the support plate 1 is flush with the bottom elevation of the beam, the post-casting strip support height is at the optimal position. The adjustable height of the support device greatly improves the practicality of the post-casting strip support column;

[0057] 5. When constructing the main and secondary beam formwork of this support area, open a 300mm*300mm rectangular hole on the beam bottom formwork. During the construction process, always ensure that the support plate 1 is flush with the upper part of the reserved hole, so that the support plate 1 can be used as the template for the reserved hole. At the same time, use sponge tape to seal the gap formed by the steel support plate 1 and the wooden formwork around the bottom of the beam to prevent cement slurry from leaking from the gap during the concrete pouring process;

[0058] 6. After the post-casting strip is constructed, the support device can be lowered by adjusting the self-locking threaded rod 77 to disengage the top support plate 1 from the bottom of the beam so that the device can be removed from the post-casting strip position for turnover use.

[0059] 2. Precautions during the processing, manufacture and construction of the post-casting strip support device provided in Example 1:

[0060] (1) This device is made of all steel, the cross-sectional dimensions must be precise, and the welds must meet the specifications;

[0061] (2) The support position of the post-cast strip must be accurate and must be checked before pouring the floor slab concrete, otherwise it will cause eccentric force on the support device;

[0062] (3) The support plate is flush with the bottom elevation of the concrete beam and is firmly fixed to ensure that the post-cast strip support device plays the role of supporting the beam body.

[0063] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A rotatable and adjustable post-casting strip support device, characterized in that: include: Support pallets, support columns, support column barrels, positioning pieces, pads and jacking devices; The support plate is arranged below the post-casting beam to be supported; The support column is fixedly arranged below the pad and extends in the vertical direction, and the lower end thereof is inserted into the support column tube; The support column is provided with a plurality of positioning holes along the height direction, and the upper portion of the support column barrel is provided with a fixing hole; the positioning member includes a T-bolt, and the T-bolt can selectively pass through one of the positioning holes and the fixing hole, thereby locking the longitudinal position of the support column relative to the support column barrel; The pad is fixedly arranged below the support column; The jacking device is fixedly arranged below the pad, and the lower end thereof is fixedly connected to the bottom plate of the post-casting strip.

2. The rotatable and adjustable post-casting strip support device according to claim 1 is characterized in that: A reinforcing rib is provided between the supporting plate and the supporting column.

3. The rotatable and adjustable post-casting strip support device according to claim 1 or 2, characterized in that: The materials of the support plate, support column, support column tube, positioning piece, pad and jacking device are all steel.

4. The rotatable and adjustable post-casting strip support device according to claim 1 or 2, characterized in that: The length of the lower end of the supporting column inserted in the supporting column tube is not less than 200 mm.

5. The rotatable and adjustable post-casting strip support device according to claim 1 or 2, characterized in that: The positioning member also includes a latch and a buckle.

6. The rotatable and adjustable post-casting strip support device according to claim 1 or 2, characterized in that: The jacking device includes: an upper U-shaped channel steel movable support, a movable support frame, a rotating shaft, a lower U-shaped channel steel fixed support, a base, a rotating handle, and a self-locking threaded rod; The outer surface of the self-locking threaded rod is threadedly connected to two rotating shafts with opposite threads; the rotating shafts are rotatably connected to the upper U-shaped channel steel movable support and the lower U-shaped channel steel fixed support respectively through the movable support frame; A rotating handle is installed on one side of the self-locking threaded rod; The lower end of the lower U-shaped channel steel fixed support is fixedly connected to the base.

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