Anti-sliding device of overhanging external scaffold

Abstract

The utility model belongs to the field of outer wall scaffolds, and particularly relates to an anti-sliding device of a cantilever outer scaffold. Comprising a cross beam, two sliding blocks are installed in the cross beam in a sliding mode, two clamping blocks distributed in a mirror image mode are installed on each sliding block in a sliding mode, a first two-way lead screw is rotatably installed in the cross beam, and the first two-way lead screw is inserted into the two sliding blocks in a threaded mode; the two sliding blocks are in threaded screwing with the forward screw rod section and the reverse screw rod section of the first two-way screw rod respectively, a plurality of limiting screw holes distributed at equal intervals are formed in one side of the cross beam, limiting bolts are inserted into the two limiting screw holes in a threaded mode, and the limiting bolts are inserted into the corresponding sliding blocks in a threaded mode; the first two-way lead screw is used for driving the two sliding blocks to slide back to back or face to face in the cross beam to adjust the position, the limiting bolts are used for limiting and fixing the sliding blocks, due to the fact that the first two-way lead screw has a self-locking function, the sliding blocks can be limited, meanwhile, the limiting bolts are matched for limiting and fixing the sliding blocks, and double limiting is achieved.

Description

Technical Field

[0001] The utility model belongs to the field of external wall scaffolding, and particularly relates to an anti-slip device for a cantilevered external scaffolding. Background Art

[0002] Cantilevered external scaffolding is a common temporary support structure for construction. It is cantilevered from the edge of the building structure to provide a work platform for construction workers or for the construction of the building's exterior walls. In the existing cantilevered scaffolding construction process, steel beams are generally used as scaffolding supports.

[0003] In order to ensure the safety of cantilever external scaffolding, it is usually necessary to install an anti-slip device to prevent the scaffolding from slipping under load. The anti-slip devices on some existing cantilever external scaffolding are relatively simple and have certain safety hazards. In response to the above problems, the inventors proposed an anti-slip device for cantilever external scaffolding to solve the above problems. Utility Model Content

[0004] The utility model aims to solve the problem that the anti-slip devices on some existing cantilevered external scaffolds are relatively simple and have certain safety hazards.

[0005] The utility model provides the following technical solutions: an anti-slip device for a cantilevered external scaffolding, comprising a crossbeam, two sliders slidably installed in the crossbeam, two clamping blocks distributed in mirror image are slidably installed on the two sliders, a first bidirectional screw rod is rotatably installed in the crossbeam, and the first bidirectional screw rod thread is inserted in the two sliders, the two sliders are respectively screwed with the forward screw rod section and the reverse screw rod section of the first bidirectional screw rod, a plurality of equidistantly distributed limiting screw holes are opened on one side of the crossbeam, limiting bolts are threadedly inserted in two of the limiting screw holes, and the limiting bolt threads are inserted in the corresponding sliders.

[0006] Furthermore, a worm is rotatably installed in the crossbeam, and a second knob is fixedly installed on the top end of the worm; a worm wheel is fixedly installed in the middle of the first bidirectional screw, and the worm is meshed with the worm wheel.

[0007] Furthermore, a sliding groove is provided at the top of the two sliders, and the two clamping blocks on the sliders are slidably installed in the sliding groove.

[0008] Furthermore, a second bidirectional screw rod is rotatably installed in the sliding grooves on the two sliders, and the second bidirectional screw rod passes through two clamping blocks. The two clamping blocks are respectively screwed with the forward screw rod section and the reverse screw rod section of the second bidirectional screw rod, and one end of the two second bidirectional screw rods is fixedly installed with a first knob.

[0009] Furthermore, a support leg is clamped and fixed between the two clamping blocks on the same slider, and the support leg is a support leg of the scaffolding.

[0010] Furthermore, the clamping block has an arc-shaped groove that matches the supporting leg. Among the two clamping blocks on the same slider, a limiting rod is fixedly installed in the arc-shaped groove of one of the clamping blocks, and a limiting hole is provided at the bottom end of the supporting leg, and the limiting rod can be inserted into the corresponding limiting hole.

[0011] Furthermore, a support plate is fixedly installed on the bottom surface of the crossbeam. The support plate is triangular in shape. Connecting rods are installed on both sides of the vertical sides of the support plate. The connecting rods on both sides are provided with multiple mounting holes equidistantly distributed up and down.

[0012] Compared with the prior art, the advantages of this utility model are:

[0013] 1. In the present invention, a first bidirectional screw is used to drive two sliders to slide back or forth within the beam to adjust their positions, and limit bolts are used to limit and fix the sliders. Because the first bidirectional screw itself has a self-locking function, it can limit the position of the sliders. At the same time, the limit bolts also limit and fix the sliders, achieving double limit, thereby preventing the scaffold from slipping under load.

[0014] 2. In the present invention, while the clamping block clamps the supporting leg, the limiting rod on the clamping block can be inserted into the limiting hole at the bottom end of the supporting leg, thereby limiting the supporting leg of the scaffolding and preventing the supporting leg of the scaffolding from rotating during use, which affects the stability of the scaffolding. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 Schematic diagram of the cross-sectional structure of the beam;

[0017] Figure 3 Schematic diagram of the cross-sectional structure of the slider;

[0018] Figure 4 Schematic diagram of the split structure of the clamping block and support rod.

[0019] In the figure: 1-crossbeam; 2-slider; 3-clamping block; 4-support leg; 5-first knob; 6-limiting bolt; 7-limiting screw hole; 8-second knob; 9-first bidirectional screw; 10-worm; 11-worm gear; 12-support plate; 13-mounting hole; 14-slide; 15-second bidirectional screw; 16-limiting rod; 17-limiting hole. DETAILED DESCRIPTION

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] like Figure 1-4 As shown, the utility model provides an anti-slip device for a cantilevered external scaffolding, comprising a crossbeam 1, two sliders 2 being slidably installed in the crossbeam 1, two clamping blocks 3 distributed in mirror images being slidably installed on the two sliders 2, a first bidirectional screw rod 9 being rotatably installed in the crossbeam 1, and the first bidirectional screw rod 9 being threadedly inserted in the two sliders 2, the two sliders 2 being respectively threadedly screwed with the forward screw rod segment and the reverse screw rod segment of the first bidirectional screw rod 9, a plurality of equally spaced limiting screw holes 7 being provided on one side of the crossbeam 1, wherein limiting bolts 6 are threadedly inserted in two of the limiting screw holes 7, and the limiting bolts 6 are threadedly inserted in the corresponding sliders 2.

[0022] According to actual needs, the first bidirectional screw rod 9 is used to drive the two sliders 2 to slide back and forth or toward each other in the beam 1 to adjust their positions, so that the threaded holes on the sliders 2 are aligned with the corresponding limiting screw holes 7 on the beam 1, and the sliders 2 are limited and fixed with limiting bolts 6. The clamping blocks 3 on the sliders 2 can be used to clamp and fix the supporting legs of the scaffolding. Because the first bidirectional screw rod 9 itself has a self-locking function, it can limit the slider 2, and at the same time cooperate with the limiting bolts 6 to limit and fix the slider 2, realizing double limitation, thereby preventing the scaffolding from slipping under load.

[0023] A worm 10 is rotatably mounted within the crossbeam 1, with a second knob 8 fixedly mounted at its top. A worm gear 11 is fixedly mounted in the middle of the first bidirectional lead screw 9, with the worm 10 meshing with the gear. By employing this technical solution, using a tool to rotate the second knob 8, the second knob 8 in turn rotates the worm 10. The worm 10 then rotates the worm gear 11, which in turn rotates the first bidirectional lead screw 9.

[0024] The tops of the two sliders 2 are provided with a slide groove 14, and the two clamping blocks 3 on the slider 2 are slidably installed in the slide groove 14. A support leg 4 is clamped and fixed between the two clamping blocks 3 on the same slider 2, and the support leg 4 is the support leg 4 of the scaffold. The scaffold is fixed and installed by using the clamping blocks 3 to support and fix the support leg 4 of the scaffold. By adopting the above technical solution, the two clamping blocks 3 are moved toward each other in the slide groove 14 on the slider 2 to clamp and fix the support leg 4. Because the support leg 4 of most scaffolds is cylindrical, the clamping surface of the clamping block 3 in this device is provided with an arc groove, which is convenient for supporting and fixing the support leg 4.

[0025] The clamping block 3 has an arcuate groove that matches the support leg 4. Of the two clamping blocks 3 on the same slider 2, a limit rod 16 is fixedly installed in the arcuate groove of one clamping block 3. A limit hole 17 is defined at the bottom end of the support leg 4, and the limit rod 16 can be inserted into the corresponding limit hole 17. By adopting the above technical solution, while the clamping block 3 clamps the support leg 4, the limit rod 16 on the clamping block 3 can be inserted into the limit hole 17 at the bottom end of the support leg 4, thereby limiting the support leg 4 of the scaffold and preventing the support leg 4 from rotating during use.

[0026] A second bidirectional screw 15 is rotatably mounted within the slots 14 of both sliders 2. The second bidirectional screw 15 passes through two clamping blocks 3, which are threadedly engaged with the forward and reverse screw segments of the second bidirectional screw 15, respectively. A first knob 5 is fixedly mounted on one end of each second bidirectional screw 15. By employing this technical solution, a tool is used to rotate the first knob 5, which in turn rotates the second bidirectional screw 15. This in turn drives the two adjacent clamping blocks 3 to slide toward each other, thereby securing the support legs 4.

[0027] A triangular support plate 12 is fixedly mounted on the bottom surface of beam 1. Connecting rods are mounted on either side of the vertical edges of support plate 12. These rods are equipped with multiple mounting holes 13 spaced evenly apart. By employing this technical solution, support plate 12 supports beam 1, and expansion bolts inserted into mounting holes 13 allow support plate 12 and beam 1 to be mounted to the building structure.

[0028] Working principle: When the utility model is in use, first use the expansion bolts to install the support plate 12 and the beam 1 on the building structure through the mounting holes 13, then use a tool to drive the second knob 8 to rotate according to actual needs, the second knob 8 drives the worm 10 to rotate, the worm 10 drives the worm wheel 11 to rotate, the worm wheel 11 drives the first bidirectional screw 9 to rotate, the first bidirectional screw 9 drives the two sliders 2 to slide back or toward each other in the beam 1 to adjust their positions, so that the threaded holes on the slider 2 are aligned with the corresponding limiting screw holes 7 on the beam 1, and the slider 2 is limited and fixed with the limiting bolts 6, and then the first knob 5 is driven by a tool to rotate, and the first knob 5 drives the first knob 5 to rotate. The second bidirectional screw rod 15 is driven to rotate, and the second bidirectional screw rod 15 drives the two adjacent clamping blocks 3 to slide toward each other to support and fix the support legs 4 of the scaffolding. While the clamping blocks 3 clamp the support legs 4, the limiting rods 16 on the clamping blocks 3 can be inserted into the limiting holes 17 at the bottom ends of the support legs 4, thereby limiting the support legs 4 of the scaffolding to prevent the support legs 4 of the scaffolding from rotating during use. The first bidirectional screw rod 9 in this device itself has a self-locking function, which can limit the slider 2, and at the same time cooperate with the limiting bolts 6 to limit and fix the slider 2, realizing double limiting, thereby preventing the scaffolding from slipping under load.

[0029] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An anti-slip device for cantilevered external scaffolding, characterized by: The invention comprises a crossbeam (1), wherein two sliders (2) are slidably installed in the crossbeam (1), and two clamping blocks (3) distributed in mirror images are slidably installed on the two sliders (2), a first bidirectional screw rod (9) is rotatably installed in the crossbeam (1), and the first bidirectional screw rod (9) is threadedly inserted in the two sliders (2), and the two sliders (2) are respectively threadedly screwed with the forward screw rod section and the reverse screw rod section of the first bidirectional screw rod (9), and a plurality of equally spaced limiting screw holes (7) are opened on one side of the crossbeam (1), wherein limiting bolts (6) are threadedly inserted in two of the limiting screw holes (7), and the limiting bolts (6) are threadedly inserted in the corresponding sliders (2).

2. The anti-slip device for cantilevered external scaffolding according to claim 1, characterized in that: A worm (10) is rotatably mounted in the crossbeam (1), and a second knob (8) is fixedly mounted on the top end of the worm (10); a worm wheel (11) is fixedly mounted in the middle of the first bidirectional screw (9), and the worm (10) is meshed with the worm wheel (11).

3. The anti-slip device for cantilevered external scaffolding according to claim 1, characterized in that: The top ends of the two sliders (2) are each provided with a slide groove (14), and the two clamping blocks (3) on the sliders (2) are slidably installed in the slide groove (14).

4. The anti-slip device for cantilevered external scaffolding according to claim 3, characterized in that: A second bidirectional screw rod (15) is rotatably installed in the sliding groove (14) on the two sliders (2), and the second bidirectional screw rod (15) passes through two clamping blocks (3). The two clamping blocks (3) are respectively screwed with the forward screw rod section and the reverse screw rod section of the second bidirectional screw rod (15), and one end of the two second bidirectional screw rods (15) is fixedly installed with a first knob (5).

5. The anti-slip device for cantilevered external scaffolding according to claim 1, characterized in that: A support leg (4) is clamped and fixed between the two clamping blocks (3) on the same slider (2), and the support leg (4) is a support leg (4) of a scaffold.

6. The anti-slip device for cantilevered external scaffolding according to claim 5, characterized in that: The clamping block (3) has an arcuate groove that matches the supporting leg (4). Among the two clamping blocks (3) on the same slider (2), a limiting rod (16) is fixedly installed in the arcuate groove of one of the clamping blocks (3). A limiting hole (17) is provided at the bottom end of the supporting leg (4), and the limiting rod (16) can be inserted into the corresponding limiting hole (17).

7. The anti-slip device for cantilevered external scaffolding according to claim 1, characterized in that: A support plate (12) is fixedly mounted on the bottom surface of the crossbeam (1), the support plate (12) being triangular in shape, and connecting rods are mounted on both sides of the vertical sides of the support plate (12), with a plurality of mounting holes (13) being equidistantly distributed vertically on the connecting rods on both sides.

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