Cantilever beam fixing device

Abstract

The utility model belongs to the technical field of building construction, and discloses a cantilever beam fixing device which comprises a limiting assembly, a pressing assembly and a jacking piece. The two sides of the cantilever beam in the width direction are each provided with a limiting assembly, each limiting assembly comprises a limiting part and an anchoring part, the lower end of each limiting part is fixedly connected with the corresponding anchoring part and embedded in the floor, the upper end of each limiting part extends out of the floor, and the area of the upper surface and the area of the lower surface of each anchoring part are both larger than the cross sectional area of the corresponding limiting part. The pressing assembly is detachably connected to the limiting piece and presses the upper surface of the cantilever beam. The two sides of the cantilever beam are each provided with at least one jacking piece, and the jacking pieces are adjustably connected with the limiting pieces in the width direction of the cantilever beam. The jacking pieces are arranged on the two sides of the cantilever beam, the cantilever beam can be fixed in the transverse direction, and the limiting effect of the cantilever beam in the width direction is enhanced; the areas of the upper surface and the lower surface of the anchoring part are both larger than the cross sectional area of the limiting part, the anti-pulling strength of the limiting assembly buried in the floor can be improved, and water seepage at the bottom of the floor can be prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of building construction, in particular to a cantilever beam fixing device. Background Art

[0002] When constructing high-rise building structures (such as reinforced concrete structures or steel structures), it is necessary to build cantilever scaffolding to assist the work and ensure the safety protection requirements of the construction. To build a cantilever scaffolding, you need to first attach the rigid cantilever beam to the building structure, and then build the scaffolding on the cantilever beam. Usually, a fixture is used to fix one end of the rigid cantilever beam to the poured reinforced concrete floor slab.

[0003] The existing fixing device includes a U-shaped rod with an opening facing upward, the bottom of the U-shaped rod is hooked on the steel bars in the floor slab, the lower end of the U-shaped rod is buried in the floor slab, and the upper end extends out of the upper surface of the floor slab, the cantilever beam is located between the two rod portions of the U-shaped rod extending out of the floor slab, the two rod portions are both provided with external threads and sleeved with nuts, an angle steel is provided above the cantilever beam, and the nut is screwed to make the angle steel press the cantilever beam; the U-shaped rod and the cantilever beam are laterally wedged by embedding wooden wedges, and the wooden wedges need to be hammered and installed, which is inconvenient to operate and difficult to remove; moreover, when there is water accumulation on the floor slab, the accumulated water may penetrate downward through the gap between the U-shaped rod and the concrete floor slab, causing inconvenience to the construction. Utility Model Content

[0004] The utility model aims to provide a cantilever beam fixing device, which can prevent water seepage from the bottom of the floor slab while ensuring the fixing firmness of the cantilever beam.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A cantilever beam fixing device, used for fixing the cantilever beam on a floor slab, comprising:

[0007] A limit assembly, two of which are arranged at intervals, and the two limit assemblies are arranged on both sides of the cantilever beam in the width direction, each of which includes a limit piece and an anchor, the lower end of the limit piece is fixedly connected to the anchor and buried in the floor slab, the upper end of the limit piece protrudes from the floor slab, and the upper surface area and the lower surface area of ​​the anchor are both larger than the cross-sectional area of ​​the limit piece;

[0008] A clamping assembly is detachably connected to the limiting member, and the clamping assembly can be clamped on the upper surface of the cantilever beam;

[0009] A tensioning member, at least one of which is disposed on both sides along the width direction of the cantilever beam, wherein the tensioning member is adjustably connected to the limiting member along the width direction of the cantilever beam, and the tensioning member is used to tension the cantilever beam.

[0010] Optionally, the limiting member includes an anchoring tube and a screw threaded in the anchoring tube, the anchoring tube is fixedly connected to the anchoring member, and the top surface of the anchoring tube does not exceed the upper surface of the floor, and the screw extends out of the floor; the limiting assembly also includes a sleeve, which is sleeved outside the anchoring tube and the screw, and the upper end of the sleeve extends out of the floor.

[0011] Optionally, the screw rod comprises a rod body and a screwing head which are connected to each other, the outer wall of the rod body is provided with an external thread, and the cross section of the screwing head is non-circular.

[0012] Optionally, the outer wall of the sleeve is provided with a demoulding layer.

[0013] Optionally, the cantilever beam fixing device also includes a connecting member, which includes a first connecting portion and a second connecting portion, the first connecting portion is threadedly sleeved on the limiting member, and the tightening member is adjustably connected to the second connecting portion along the width direction of the cantilever beam.

[0014] Optionally, the second connecting portion is a connecting nut, the axial direction of the connecting nut is perpendicular to the limiting member, and the tightening member is threadedly screwed into the connecting nut.

[0015] Optionally, a connecting hole is provided on the second connecting portion, the axial direction of the connecting hole is perpendicular to the limiting member, and the pressing member is passed through the connecting hole;

[0016] One of the inner wall of the connecting hole and the outer wall of the pressing member is provided with a plurality of anti-retraction barbs along the axial direction, and the other is provided with a plurality of slots along the axial direction, wherein the anti-retraction barbs have a state where the card-in box is disengaged from the slots.

[0017] Optionally, the connecting member includes two second connecting parts, which are arranged on both sides of the first connecting part along the length direction of the cantilever beam, and each of the second connecting parts is provided with one of the tightening members.

[0018] Optionally, the clamping assembly includes a clamping plate and a clamping nut, the clamping plate is provided with a through hole for passing the limiting member, the clamping nut is threadedly sleeved on the limiting member, and the clamping nut is located on the side of the clamping plate facing away from the cantilever beam.

[0019] Optionally, the cantilever beam fixing device further includes a first cushion layer and a second cushion layer, wherein the first cushion layer is clamped between the pressing member and the cantilever beam, and the second cushion layer is clamped between the pressing assembly and the cantilever beam.

[0020] Beneficial effects of the utility model:

[0021] The cantilever beam fixing device proposed in the utility model, when it is necessary to fix the cantilever beam, firstly, two limiting components are pre-buried in the floor slab, and then the cantilever beam is placed between the two limiting components, and then the pressing component is pressed against the upper surface of the cantilever beam to limit the vertical displacement of the cantilever beam, and the top tightening member is adjusted along the width direction of the cantilever beam so that the top tightening member presses the cantilever beam from the side. By arranging the top tightening members on both sides of the cantilever beam, the cantilever beam can be fixed in the horizontal direction (i.e., the width direction of the cantilever beam) so that it cannot move left and right, and the limiting effect in the width direction of the cantilever beam is strengthened. The limiting component includes a limiting member and an anchoring member, and the upper surface area and the lower surface area of ​​the anchoring member are both larger than the cross-sectional area of ​​the limiting member, which can not only increase the pull-out strength of the limiting member after being buried in the floor slab, improve the stability of the limiting member, and make the limiting member limit the cantilever beam more stably and reliably; it can also serve as a water stop plate to prevent the accumulated water on the upper surface of the floor slab from seeping into the bottom of the floor through the gap between the limiting member and the floor slab. In addition, the cantilever beams used in different engineering constructions may have different specifications and sizes. By adjusting the distance between the two limit assemblies, the device can be used to fix different cantilever beams, and has strong versatility. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the cantilever beam fixing device provided by an embodiment of the utility model;

[0023] Figure 2 It is a structural schematic diagram of a limit assembly provided in an embodiment of the utility model;

[0024] Figure 3 It is a structural schematic diagram of a pressing plate provided in an embodiment of the utility model;

[0025] Figure 4 is a cross-sectional view of a cantilever beam fixing device provided by an embodiment of the utility model;

[0026] Figure 5 It is a structural schematic diagram of a connecting piece provided in an embodiment of the utility model.

[0027] In the figure:

[0028] 1. Cantilever beam;

[0029] 2. Floor slab;

[0030] 3. Limiting assembly; 31. Limiting piece; 311. Anchoring tube; 312. Screw; 3121. Rod body; 3122. Screwing head; 32. Anchoring piece;

[0031] 4. Clamping assembly; 41. Pressing plate; 411. Perforation; 42. Clamping nut;

[0032] 5. Tightening parts;

[0033] 6. Connecting member; 61. First connecting portion; 62. Second connecting portion;

[0034] 7. Sleeve. DETAILED DESCRIPTION

[0035] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0036] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0038] In the description of this embodiment, the terms "upper", "lower", "left", "right" and other directions or positional relationships are based on the directions or positional relationships shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0039] Embodiment 1

[0040] like Figure 1As shown, this embodiment provides a cantilever beam fixing device for fixing a cantilever beam 1 on a floor slab 2, comprising a limiting assembly 3, a clamping assembly 4 and a jacking member 5. Among them, two limiting assemblies 3 are arranged at intervals, and the two limiting assemblies 3 are respectively arranged on both sides of the cantilever beam 1 along the width direction of the cantilever beam 1, each limiting assembly 3 comprises a limiting member 31 and an anchor 32, the lower end of the limiting member 31 is fixedly connected with the anchor 32 and buried in the floor slab 2, the upper end of the limiting member 31 extends out of the floor slab 2, and the upper surface area and the lower surface area of ​​the anchor 32 are set to be larger than the cross-sectional area of ​​the limiting member 31; the clamping assembly 4 is detachably connected to the limiting member 31 and is arranged on the upper surface of the cantilever beam 1 for clamping the cantilever beam 1; at least one jacking member 5 is respectively arranged on both sides of the cantilever beam 1 along the width direction of the cantilever beam 1, and the jacking member 5 is adjustably connected to the limiting member 31 along the width direction of the cantilever beam 1 for laterally clamping the two sides of the cantilever beam 1. When the device is used to fix the cantilever beam 1, first, the lower ends of the two limiting components 3 are embedded in the floor slab 2, and the upper ends extend out of the floor slab 2, and then the cantilever beam 1 is placed between the two limiting components 3, and then the clamping component 4 is connected to the limiting component 3 and pressed against the upper surface of the cantilever beam 1 to limit the vertical displacement of the cantilever beam 1, and the tightening member 5 is adjusted along the width direction of the cantilever beam 1 so that the tightening member 5 tightens the cantilever beam 1 from the side. By setting the top fasteners 5 on both sides of the cantilever beam 1, the cantilever beam 1 can be fixed in the horizontal direction (i.e. the width direction of the cantilever beam 1) so that it cannot move left and right, and the limiting effect in the width direction of the cantilever beam 1 is strengthened to ensure the fixing effect, and the structure is simple and easy to install and remove; the limiting assembly 3 includes a limiting member 31 and an anchor 32, and the upper surface area and the lower surface area of ​​the anchor 32 are both larger than the cross-sectional area of ​​the limiting member 31, which can not only increase the pull-out strength of the limiting assembly 3 after being buried in the floor slab 2, improve the stability of the limiting assembly 3, and make the limiting member 31 limit the cantilever beam 2 more stably and reliably; but also can be used as a water stop plate to prevent the accumulated water on the upper surface of the floor slab 2 from penetrating to the bottom of the floor through the gap between the limiting member 31 and the floor slab 2, and avoid the occurrence of water seepage. In addition, the specifications and sizes of the cantilever beams 1 used in different engineering constructions may be different. By adjusting the spacing between the two limiting assemblies 3, the device can be used to fix different cantilever beams 1, and has strong versatility.

[0041] Optionally, a threaded hole is provided on the stopper 31, and the tensioning member 5 can be a bolt, which is screwed into the threaded hole along the width direction of the cantilever beam 1 to achieve tight contact with the side of the cantilever beam 1, thereby laterally fixing the cantilever beam 1. The threaded cooperation between the tensioning member 5 and the stopper 31 achieves the position adjustment of the tensioning member 5 along the width direction of the cantilever beam 1, and the structure is simple, which can not only ensure the fixing effect of the cantilever beam 1, but also facilitate the installation and removal of the tensioning member 5.

[0042] Optionally, one or more threaded holes may be provided on the limiting member 31 , and one or more tightening members 5 may be correspondingly provided along the width direction of the cantilever beam 1 .

[0043] In this embodiment, the cantilever beam 1 is an I-beam, which includes two flanges spaced apart and a web connected between the two flanges. The clamping assembly 4 is clamped on the flanges, and the clamping members 5 on both sides are clamped on both sides of the web.

[0044] Alternatively, if Figure 1 and Figure 2 As shown, the limiting component 3 also includes a sleeve 7, which is sleeved outside the limiting member 31, the lower end of the sleeve 7 abuts against the anchor 32 and extends into the floor 2, and the upper end extends out of the floor 2. Therefore, when the limiting component 3 is buried, the poured concrete will directly contact the outer wall of the sleeve 7 and the anchor 32 to fix the anchor 32 and the lower end of the sleeve 7 in the floor 2. The limiting member 31 includes an anchoring tube 311 and a screw 312 threaded in the anchoring tube 311, the lower end of the sleeve 7 is sleeved outside the anchoring tube 311, the anchoring tube 311 is fixedly connected to the anchor 32 and buried in the floor 2, the top surface of the anchoring tube 311 does not exceed the upper surface of the floor 2, and the upper end of the screw 312 extends out of the floor 2. The existence of the sleeve 7 can isolate the screw 312 from the concrete. When the construction is completed, the screw 312 can be screwed out of the anchor tube 311 to achieve the reuse of the screw 312, thereby reducing the investment cost. In addition, when fixing the cantilever beam 1, only the anchor 32, the anchor tube 311 and the sleeve 7 need to be pre-embedded. The lower end of the sleeve 7 is sleeved outside the anchor tube 311 and abuts against the anchor 32, and the upper end extends out of the floor 2, which can prevent the concrete from entering the anchor tube 311. When the concrete solidifies, the screw 312 is screwed into the anchor tube 311.

[0045] In this embodiment, the anchoring piece 32 and the anchoring tube 311 are both made of steel, and the two can be pre-welded and connected.

[0046] Optionally, a demoulding layer may be provided on the outer wall of the sleeve 7. After the construction is completed, it is convenient to demould and remove the sleeve 7 from the floor slab 2, so as to realize the reuse of the sleeve 7 and further reduce the production cost.

[0047] Exemplarily, a release agent is applied to the outer wall of the sleeve 7 to form a release layer, and the release agent can be a water-based release agent or an oily release agent commonly used in the field of construction. In other embodiments, edible oil or engine oil can also be applied to form a release layer, which is not limited here.

[0048] For example, this embodiment uses a plastic sleeve as the sleeve 7, which is easy to demould, easy to produce, and inexpensive. In other embodiments, sleeves made of other materials, such as steel pipes, can also be used as the sleeve 7, which is not limited here.

[0049] Alternatively, if Figure 2 As shown, the screw rod 312 includes a rod body 3121 and a screwing head 3122 connected to each other. The outer wall of the rod body 3121 is provided with an external thread for threaded connection with the internal thread of the inner wall of the anchor tube 311; the cross section of the screwing head 3122 is set to be non-circular, and a screwing tool (such as a wrench, etc.) can be clamped on the screwing head 3122 to prevent the screwing tool from slipping with the screw rod 312, so that the rod body 3121 can be screwed into or out of the anchor tube 311.

[0050] Illustratively, in this embodiment, the screwing head 3122 is configured as a hexagon. In other embodiments, the screwing head 3122 may be configured as a triangle, an octagon, or other shapes as needed, which is not limited here.

[0051] Alternatively, if Figure 1 and Figure 3 As shown, the clamping assembly 4 includes a clamping plate 41 and a clamping nut 42. The clamping plate 41 is provided with a through hole 411 for inserting the limiter 31. When the cantilever beam 1 is clamped, the limiter 31 is inserted through the through hole 411 of the clamping plate 41, so that the clamping plate 41 is in contact with the upper surface of the cantilever beam 1; then the clamping nut 42 is sleeved on the limiter 31, that is, the clamping nut 42 is located on the side of the clamping plate 41 facing away from the cantilever beam 1, and the clamping nut 42 is threadedly connected with the limiter 31, so as to longitudinally clamp the cantilever beam 1 and fix it to the upper surface of the floor slab 2. When the construction is completed, the clamping plate 41 can be removed by simply unscrewing the clamping nut 42 from the limiter 31. The structure is simple and easy to remove.

[0052] Optionally, the cantilever beam fixing device further includes a first cushion layer and a second cushion layer. The first cushion layer is sandwiched between the cantilever beam 1 and the jacking member 5, which can prevent the jacking member 5 from sliding and shifting with the cantilever beam 1, thereby ensuring the lateral fixing effect of the cantilever beam 1 and preventing its shifting. It can also prevent the jacking member 5 from wearing the cantilever beam 1 and avoiding affecting the strength of the cantilever beam 1. The second cushion layer is sandwiched between the clamping component 4 and the cantilever beam 1, which can increase the friction between the clamping component 4 and the cantilever beam 1, thereby preventing the clamping component 4 from sliding and ensuring that the cantilever beam 1 is firmly clamped.

[0053] For example, in this embodiment, silicone pads are selected as the first cushion layer and the second cushion layer. Silicone has good flexibility and elasticity, and can absorb vibration and impact on the cantilever beam 1 during construction. In other embodiments, pads of other materials such as plastic can also be selected as the first cushion layer and the second cushion layer as needed, which is not limited here.

[0054] The installation process of the cantilever beam fixing device provided in this embodiment is as follows:

[0055] S1, embed two limit assemblies 3 in the floor slab 2 and pour concrete;

[0056] S2, after the concrete solidifies, place the cantilever beam 1 between the two limit assemblies 3;

[0057] S3. Connect the clamping assembly 4 with the limiting assembly 3 and press them against the upper surface of the cantilever beam 1; pass the two pressing members 5 through the threaded holes of the two limiting members 31 respectively, and screw them until they are tightly pressed against the side surfaces of the cantilever beam 1, thereby laterally limiting the cantilever beam 1.

[0058] Embodiment 2

[0059] Based on the same inventive concept as the first embodiment, this embodiment provides a cantilever beam fixing device. Figure 2 , Figure 4 as well as Figure 5 As shown, the difference between this embodiment and the first embodiment is that the cantilever beam fixing device also includes a connecting member 6, and the connecting member 6 includes a first connecting portion 61 and a second connecting portion 62. The first connecting portion 61 is threadedly sleeved on the limiting member 31, that is, the first connecting portion 61 is threadedly connected to the screw rod 312, and the clamping member 5 is adjustably connected to the second connecting portion 62 along the width direction of the cantilever beam 1, and laterally clamps the cantilever beam 1 to prevent the cantilever beam 1 from moving left and right, thereby ensuring the fixing effect, and the position of the clamping member 5 can be adjusted according to the size of the cantilever beam 1 actually used, and has strong versatility.

[0060] Optionally, the second connection part 62 is a connection nut, which is fixedly connected to the first connection part 61, and the axial direction of the connection nut is perpendicular to the limiter 31. The jacking member 5 is screwed into the connection nut and pressed against the side of the cantilever beam 1, thereby realizing the lateral jacking of the cantilever beam 1. The connection nut is used as the second connection part 62, which has a simple structure and is convenient for installation and removal of the jacking member 5.

[0061] Optionally, a bolt can be used as the tightening member 5, and the bolt cooperates with the connecting nut thread to flexibly adjust the position of the bolt. In other embodiments, a component with an external thread such as a stud can also be used as the tightening member 5, which is not limited here.

[0062] like Figure 4 and Figure 5 As shown, one connecting member 6 includes two second connecting parts 62, and the two second connecting parts 62 are respectively arranged on both sides of the first connecting part 61, and a tightening member 5 is arranged on each second connecting part 62. Two tightening members 5 are arranged on both sides of the cantilever beam 1, which can strengthen the lateral tightening force of the cantilever beam 1, improve the tightening effect, and fully ensure that the cantilever beam 1 does not move left and right.

[0063] Exemplarily, the first connection part 61 is a connection nut, which is convenient for adjusting the position of the connection member 6 on the limiter 31. In other embodiments, a connection block with an internal threaded jack or the like can also be selected as the first connection part 61, which is not limited here.

[0064] Optionally, the first connection part 61 is sleeved on the limiting member 31 and is set on the center line of the height of the cantilever beam 1, so that the second connection part 62 is also on the center line of the height of the cantilever beam 1. Since the tightening member 5 is connected to the second connection part 62 along the width direction of the cantilever beam 1 and tightens the cantilever beam 1 laterally, the cantilever beam 1 can be subjected to balanced force and the tightening effect can be enhanced.

[0065] Exemplarily, the first connection part 61 and the two second connection parts 62 are all hexagonal nuts, and three hexagonal nuts are welded in sequence to form the connection member 6. Using hexagonal nuts as the connection parts facilitates welding and screwing.

[0066] In other embodiments, other types of nuts such as octagonal nuts may be selected according to actual needs, which is not limited here.

[0067] The installation process of the cantilever beam fixing device provided in this embodiment is as follows:

[0068] S1, embed two limit assemblies 3 in the floor slab 2 and pour concrete;

[0069] S2, after the concrete solidifies, place the cantilever beam 1 between the two limit assemblies 3;

[0070] S3, sleeve the first connection part 61 on the limiting member 31, and thread the tightening member 5 on the second connection part 62 to tighten the cantilever beam 1 laterally;

[0071] S4. Pass the limiting member 31 through the through hole 411 of the pressing plate 41, and move the pressing plate 41 downward until it contacts the upper surface of the cantilever beam 1; thread the clamping nut 42 onto the limiting member 31, and screw the clamping nut 42 to longitudinally clamp the cantilever beam 1.

[0072] Embodiment 3

[0073] Based on the same inventive concept as that of the second embodiment, this embodiment provides a cantilever beam fixing device. The difference between this embodiment and the second embodiment is that a connecting hole is provided on the second connecting portion 62, and the connecting hole is not a threaded hole; the axial direction of the connecting hole is perpendicular to the limit member 31, and the tension member 5 is inserted into the connecting hole. A plurality of anti-retraction barbs are provided axially on the inner wall of the connecting hole, and a plurality of card slots are provided axially on the outer wall of the tension member 5, and the anti-retraction barbs have a state of being inserted into and out of the card slots. When the cantilever beam 1 is laterally tightened, the tension member 5 is inserted into the connecting hole along the width direction of the cantilever beam 1, and the tension member 5 can only move in one direction in the connecting hole until the tension member 5 is pressed against the side of the cantilever beam 1, at which time the anti-retraction barb is inserted into the card slot, which can prevent the tension member 5 from moving in the direction away from the cantilever beam 1, so that the tension member 5 is laterally firmly fixed, and the cantilever beam 1 is reliably tightened laterally to prevent it from moving left and right.

[0074] Specifically, the inner wall of the connection hole is provided with multiple rows of barbs at intervals along the circumferential direction, and multiple barbs in each row are arranged at intervals along the axial direction of the connection hole. Similarly, multiple rows of slots are arranged at intervals along the circumferential direction on the outer wall of the tension member 5, and multiple slots in each row are arranged at intervals along the axial direction of the connection hole, which can improve the connection strength of the tension rod 5 in the connection hole.

[0075] In this embodiment, the second connecting portion 62 and the jacking member 5 are both made of plastic material, which has certain strength and elastic deformation ability, so as to facilitate the locking and disengagement of the barb. When the construction is completed and the fixing device is removed, the jacking member 5 can be directly cut off to release the jacking of the cantilever beam 1.

[0076] In other embodiments, a plurality of retaining barbs may be axially arranged on the outer wall of the pressing member 5, and a plurality of retaining grooves may be axially arranged on the inner wall of the connecting hole.

[0077] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, various obvious changes, readjustments and substitutions can be made without departing from the scope of protection of the present invention. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention shall be included in the scope of protection of the claims of the present invention.

Claims

1. A cantilever beam fixing device, used for fixing a cantilever beam (1) on a floor slab (2), characterized in that: include: A limit assembly (3), two of which are arranged at intervals, and the two limit assemblies (3) are arranged on both sides of the cantilever beam (1) in the width direction, and each of the limit assemblies (3) comprises a limit piece (31) and an anchor piece (32), the lower end of the limit piece (31) is fixedly connected to the anchor piece (32) and buried in the floor slab (2), the upper end of the limit piece (31) protrudes out of the floor slab (2), and the upper surface area and the lower surface area of ​​the anchor piece (32) are both larger than the cross-sectional area of ​​the limit piece (31); A clamping assembly (4) is detachably connected to the limiting member (31), and the clamping assembly (4) can be clamped on the upper surface of the cantilever beam (1); A tensioning member (5), at least one of which is provided on both sides along the width direction of the cantilever beam (1), the tensioning member (5) being connected to the limiting member (31) in an adjustable manner along the width direction of the cantilever beam (1), and the tensioning member (5) being used to tension the cantilever beam (1).

2. The cantilever beam fixing device according to claim 1, characterized in that: The limiting member (31) comprises an anchoring cylinder (311) and a screw (312) threadedly screwed into the anchoring cylinder (311); the anchoring cylinder (311) is fixedly connected to the anchoring member (32); the top surface of the anchoring cylinder (311) does not exceed the upper surface of the floor slab (2); the screw (312) protrudes out of the floor slab (2); the limiting assembly (3) further comprises a sleeve (7); the sleeve (7) is sleeved outside the anchoring cylinder (311) and the screw (312); the upper end of the sleeve (7) protrudes out of the floor slab (2).

3. The cantilever beam fixing device according to claim 2, characterized in that: The screw rod (312) comprises a rod body (3121) and a screwing head (3122) which are connected to each other. The outer wall of the rod body (3121) is provided with an external thread, and the cross section of the screwing head (3122) is non-circular.

4. The cantilever beam fixing device according to claim 2, characterized in that: The outer wall of the sleeve (7) is provided with a demoulding layer.

5. The cantilever beam fixing device according to claim 1, characterized in that: The cantilever beam fixing device also includes a connecting member (6), the connecting member (6) includes a first connecting portion (61) and a second connecting portion (62), the first connecting portion (61) is threadedly sleeved on the limiting member (31), and the pressing member (5) is adjustably connected to the second connecting portion (62) along the width direction of the cantilever beam (1).

6. The cantilever beam fixing device according to claim 5, characterized in that: The second connecting portion (62) is a connecting nut, the axial direction of the connecting nut is perpendicular to the limiting member (31), and the pressing member (5) is threadedly screwed into the connecting nut.

7. The cantilever beam fixing device according to claim 5, characterized in that: The second connecting portion (62) is provided with a connecting hole, the axial direction of the connecting hole is perpendicular to the limiting member (31), and the pressing member (5) is inserted into the connecting hole; One of the inner wall of the connecting hole and the outer wall of the pressing member (5) is provided with a plurality of anti-retraction barbs along the axial direction, and the other is provided with a plurality of clamping grooves along the axial direction, wherein the anti-retraction barbs can be clamped in and out of the clamping grooves.

8. The cantilever beam fixing device according to claim 5, characterized in that: The connecting member (6) comprises two second connecting parts (62), the two second connecting parts (62) being arranged on both sides of the first connecting part (61) along the length direction of the cantilever beam (1), and each of the second connecting parts (62) is provided with one of the tightening members (5).

9. The cantilever beam fixing device according to any one of claims 1 to 8, characterized in that: The clamping assembly (4) comprises a clamping plate (41) and a clamping nut (42); the clamping plate (41) is provided with a through hole (411) for inserting the limiting member (31); the clamping nut (42) is threadedly sleeved on the limiting member (31); and the clamping nut (42) is located on a side of the clamping plate (41) facing away from the cantilever beam (1).

10. The cantilever beam fixing device according to any one of claims 1 to 8, characterized in that: The cantilever beam fixing device further comprises a first cushion layer and a second cushion layer, wherein the first cushion layer is sandwiched between the pressing member (5) and the cantilever beam (1), and the second cushion layer is sandwiched between the pressing assembly (4) and the cantilever beam (1).

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