Safety scaffold for engineering construction

Abstract

The utility model relates to a safety scaffold for engineering construction, which effectively solves the technical problems of unstable gravity center at the bottom of the scaffold, unstable supporting of supporting legs and unstable fixation of a working table, and comprises a bottom plate, a plurality of supporting shafts are fixed at the lower end of the bottom plate, universal wheels are mounted below the supporting shafts, lower crawling ladders are symmetrically and rotatably mounted on two sides of the bottom plate, and the lower crawling ladders are fixed on the bottom plate. An upper ladder stand is rotatably installed above the lower ladder stand, a workbench is detachably installed on the upper ladder stand, side fences are rotatably installed above the upper ladder stand, an inclined supporting rod is detachably installed between the upper ladder stand and the lower ladder stand, a transverse handrail is detachably installed between the two side fences, and storage boxes are symmetrically fixed to the two sides of the bottom plate; through the cooperation of the bottom plate and the storage box, when the scaffold does not work, the bottom plate and the storage box can store all parts and are convenient to move, and when the scaffold works, the bottom plate and the storage box can contain counter weights, the gravity center of the scaffold is lowered, and the stability and safety of the scaffold are improved.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction safety technology, specifically to a type of engineering construction safety scaffolding. Background Technology

[0002] There are two main types of construction scaffolding. One type is constructed by using steel pipes and foot clamps. This type of scaffolding is mainly used on construction sites. Its structure and installation are complex, and it is only suitable for fixed construction sites. Its application range is limited and its cost is relatively high. Nowadays, most scaffolding is mobile scaffolding, which can be used in a variety of scenarios. It is convenient to use and has a low cost. This application mainly studies the existing mobile scaffolding.

[0003] Due to the materials used, this type of mobile scaffolding is relatively lightweight. Existing mobile scaffolding is mostly designed for disassembly and assembly, making it convenient and flexible. However, this leads to the following problems:

[0004] 1. Due to its light weight and unstable structure, the workbench often wobbles when moved by construction workers, posing a safety hazard.

[0005] 2. Currently, the lower end of the mobile scaffolding is only supported by four support shafts, which makes the support unstable. In addition, the casters pose a risk of movement, which poses a safety hazard to construction workers.

[0006] 3. Currently, the scaffolding work platform is loosely fastened to the column. The fastening is done through downward-facing semi-circular buckles, mainly relying on gravity for fixation. However, it is actually movable and can be easily disassembled by gently pushing it from bottom to top. But because the overall weight is relatively light, when the scaffolding sways, tilts, or even overturns, it collapses instantly. This results in insufficient support for workers who fall, rendering their safety belts useless. Furthermore, the collapse of the scaffolding can easily cause secondary injuries to workers.

[0007] Based on this, the present invention provides a construction safety scaffold to solve the above problems. Utility Model Content

[0008] In view of the above situation and to overcome the defects of the prior art, this utility model provides a construction safety scaffold. This utility model has a novel structure and ingenious design, and effectively solves the technical problems of unstable center of gravity at the bottom of the scaffold, unstable support of the supporting legs, and unstable fixing of the work platform.

[0009] A construction safety scaffold, characterized in that it includes a base plate, a plurality of support shafts fixed to the lower end of the base plate, casters installed below the support shafts, a lower ladder rotatably mounted on both sides of the base plate, an upper ladder rotatably mounted above the lower ladder, a workbench detachably mounted on the upper ladder, a side railing rotatably mounted above the upper ladder, a diagonal brace detachably mounted between the upper and lower ladders, a horizontal railing detachably mounted between the two side railings, and storage boxes symmetrically fixed on both sides of the base plate.

[0010] Preferably, locking shells are slidably installed at the rotating parts of the lower and upper ladders, the rotating parts of the upper ladder and the side railing, and the rotating parts of the lower ladder.

[0011] Preferably, a chassis is fixed on the support shaft, and a collar is slidably mounted on the support shaft at the upper end of the chassis. Multiple support rods are hinged to the collar in a circumferentially distributed manner, and connecting rods are hinged to the support rods. The other end of the connecting rods is hinged to the chassis.

[0012] Preferably, a stabilizing plate is rotatably mounted on the lower end of the support rod, and a fixing hole is provided on the stabilizing plate.

[0013] Preferably, an adjusting seat is rotatably mounted on the lower end of the support shaft, and corresponding arc-shaped adjusting holes are opened on the adjusting seat and the support shaft. Locking bolts are installed in the adjusting holes, a caster wheel is installed on the lower end of the adjusting seat, and a stabilizing seat is fixed on the side of the adjusting seat.

[0014] Preferably, one end of the workbench is fixed with a plurality of semi-circular retaining rings, and the other end of the workbench is provided with an adjustment groove, in which a movable lead screw is rotatably installed, and the other end of the movable lead screw is rotatably installed with an adjustment sleeve, and the adjustment sleeve is fixed with an adjustment retaining ring.

[0015] Preferably, one end of the movable lead screw is fixed with an adjusting disc, and the adjusting sleeve has an adjusting groove that matches the adjusting disc.

[0016] Preferably, a worm gear is sleeved on the movable lead screw, the worm gear meshes with a worm, the worm part is placed on the outside of the worktable, and a limiting screw sleeve sleeved on the movable lead screw is fixed in the adjusting groove.

[0017] Preferably, the movable lead screw is coaxially provided with a guide hole, and a guide rod is fixed at the end of the adjusting groove.

[0018] Preferably, the fixing buckle and the adjusting buckle are fixed with insert rods, and the upper ladder is provided with corresponding insertion holes.

[0019] The present invention has the following technical effects.

[0020] 1. This utility model, through the cooperation of the base plate and the storage box, allows the base plate and the storage box to store various parts when not in use, making them easy to move. When in use, the base plate and the storage box can hold counterweights, increasing the stability and safety of the scaffolding.

[0021] 2. This utility model, through the cooperation of collar, support rod, connecting rod and base, enables the stabilizing plate to unfold into a triangular stable structure, while increasing the area of ​​the support points. Combined with the stabilizing seat, it achieves four-point support, further increasing the stability of the bottom of the scaffold and increasing the safety of the scaffold.

[0022] 3. This utility model provides self-locking support for the columns at both ends of the climbing ladder through fixed buckles and adjustable buckles. Even if the scaffolding shakes and tilts, it will not fall apart. In the event of a fall, the construction workers will not be left without support. The safety belt can play a safety role and will not cause secondary injuries to the workers. Attached Figure Description

[0023] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0024] Figure 1 This is a schematic diagram showing an enlarged example of the entire and some parts of this utility model.

[0025] Figure 2 This is a schematic diagram of an enlarged example of the entire and some parts of this utility model.

[0026] Figure 3 This is an enlarged schematic diagram of two cross-sections of the workbench of this utility model.

[0027] Figure 4 This is a schematic diagram of the folded state of this utility model.

[0028] Figure label:

[0029] 1-Base plate; 2-Support shaft; 3-Wheel caster; 4-Lower ladder; 5-Upper ladder; 6-Workbench; 7-Side railing; 8-Diagonal brace; 9-Horizontal railing; 10-Storage box; 11-Locking shell; 12-Chassis; 13-Lock ring; 14-Support rod; 15-Connecting rod; 16-Stabilizing plate; 17-Fixing hole; 18-Adjusting seat; 19-Adjusting hole; 20-Locking bolt; 21-Stabilizing seat; 22-Fixing buckle; 23-Adjusting groove; 24-Moving screw; 25-Adjusting sleeve; 26-Adjusting buckle; 27-Adjusting disc; 28-Worm gear; 29-Worm; 30-Limiting screw sleeve; 31-Guide hole; 32-Guide rod; 33-Insertion rod. Detailed Implementation

[0030] The foregoing and other technical contents, features, and effects of this utility model will be clearly presented in the following detailed description of the embodiments with reference to the accompanying drawings. All content mentioned in the following embodiments is based on the accompanying drawings.

[0031] Exemplary embodiments of the present invention will now be described with reference to the accompanying drawings.

[0032] This utility model is a construction safety scaffold, including a base plate 1 for stable support at the bottom. Support shafts 2 are fixed at the four corners of the lower end of the base plate 1. Universal wheels 3 are installed at the lower end of the support shafts 2. The universal wheels 3 have built-in brakes. Lower ladders 4 are rotatably installed on both sides above the base plate 1. Upper ladders 5 are rotatably installed on both sides above the lower ladders 4. A work platform 6 is detachably installed on the upper ladders 5 for use as a construction platform. Side railings 7 are rotatably installed above the upper ladders 5. To ensure overall stability, diagonal bracing rods 8 are detachably installed between the upper ladders 5 and the lower ladders 4. A horizontal railing 9 is detachably installed between the two side railings 7. The specific structure of the diagonal bracing rods 8 and the horizontal railing 9 includes a support rod. Semi-circular hooks are integrally fixed at both ends of the support rod for clamping onto the columns of the upper ladders 5, lower ladders 4, and side railings 7 for support and safety protection. Storage boxes 10 are symmetrically fixed on both sides of the base plate 1.

[0033] Since the entire structure has the function of disassembly and folding, the storage box 10 has two functions. First, when not in use, the side railing 7 rotates 180° inward to be parallel with the upper ladder 5, and then rotates 180° outward together with the upper ladder 5 to be parallel with the lower ladder 4. Then, it rotates 90° inward together with the lower ladder 4 and folds onto the base plate 1. At this time, the lower ladder 4, upper ladder 5, and side railing 7 on both sides are folded and placed on the base plate between the two storage boxes 10. Then, multiple diagonal braces 8 and horizontal railings 9 are placed inside the storage box 10, the workbench 6 is placed on the base plate 1, and then the storage box 10 is pushed as a whole by the movement of the casters 3, which facilitates the overall displacement and movement.

[0034] When in use, rotate the side railing 7, upper ladder 5, and lower ladder 4 in reverse to a vertical position. Install the workbench 6 on the upper ladder 5. Snap multiple diagonal braces 8 and horizontal railings 9 onto the corresponding columns for support and safety protection. Then, place counterweights or heavy objects on site, such as stones, cement, or concrete blocks, on the storage box 10 and base plate 1 to increase the center of gravity at the bottom and maintain the overall stability of the scaffolding. Finally, lock the brakes on the casters 3 to ensure safety during scaffolding use. The storage box 10 can be equipped with a storage lid.

[0035] As an example, to ensure that the lower ladder 4, upper ladder 5, and side railing 7 are fixed in a vertical position after rotation, locking shells 11 are slidably installed at the rotation points of the lower ladder 4 and upper ladder 5, the upper ladder 5 and side railing 7, and the lower ladder 4. The locking shell 11 is rectangular in shape, hollow inside, and open at both ends. It slides up and down at the lower ladder 4, upper ladder 5, and side railing 6 respectively. After rotation, the locking shell 11 is slid to the rotation point, so that the rotation point is inside the locking shell 11. After the locking shell 11 is placed at the rotation point, it is blocked by the lateral column and cannot continue to slide, thereby locking the lower ladder 4, upper ladder 5, and side railing 7 and preventing them from rotating, thus ensuring the safety of the scaffolding.

[0036] As an example, since the scaffolding is supported by only four support columns 2, construction workers will move on the work platform 6 during work. However, the existing scaffolding has weak overall stability, and walking will cause the scaffolding to sway. In order to ensure the stability of the scaffolding, a base plate 12 is fixed at the lower end of the support shaft 2. A collar 13 is provided above the base plate 12. The collar 13 slides up and down on the support shaft 2. Multiple support rods 14 are hinged on the support shaft 2. Connecting rods 15 are hinged on the support rods 14. The other end of the connecting rods 15 is hinged to the base plate 12.

[0037] During operation, the collar 13 slides down, and under the action of the connecting rod 15, the collar 13 drives the support rod 14 to unfold. There are three support rods 14, which form a triangle, providing stable support and making the bottom of the scaffold more stable.

[0038] When not in use, slide the collar 13 upwards. Under the action of the connecting rod 15, the collar 13 drives the support rod 14 to retract, thus retracting parallel to the side of the support shaft 2.

[0039] As an example, in order to more securely support the shaft 2, a stabilizing plate 16 is hinged to the lower end of the support rod 14. The stabilizing plate 16 is a square or rectangular plate. When the stabilizing plate 16 is supported, it is in contact with the ground. When it is retracted, it is parallel to the support shaft 2. Therefore, the stabilizing plate 16 is hinged. Depending on the usage scenario, as needed, the stabilizing plate 16 is provided with fixing holes 17. Bolts or pins can be installed at the fixing holes 17 to further improve stability.

[0040] As an example, in order to further improve the safety of the scaffolding, an adjusting seat 18 is rotatably installed at the lower end of the support shaft 2 via a pivot. The adjusting seat 18 and the support shaft 2 are provided with corresponding adjusting holes 19. Locking bolts 20 and nuts are installed in the adjusting holes 19. A caster wheel 3 is installed at the lower end of the adjusting seat 18. A stabilizing seat 21 is fixed to the side of the adjusting seat 18. The stabilizing seat 21 and the caster wheel 3 are at a 90° angle.

[0041] When not in use, the caster wheel 3 is supported on the ground. When in use, the adjusting seat 18 is rotated. The adjusting seat 18 rotates around the pivot. After rotation, the locking bolt 20 is inserted into the adjusting hole 19, and the nut is tightened to lock the adjusting seat 18 against the support shaft 2. At this time, the caster wheel 3 rotates until the side of the support shaft 2 is off the ground, and the stabilizing seat 21 rotates to the ground and works together with the stabilizing plate 16 to provide support, further improving the stability and safety of the bottom of the scaffold.

[0042] As an example, the existing workbench 6 is attached to the column by a detachable clamping mechanism. Its clamping ring is semi-circular at the top and is mainly locked by gravity. However, it is essentially a movable placement. Due to the overall material and structure of the scaffolding, when the scaffolding collapses, because it is fixed by gravity clamping, the scaffolding always collapses instantly when a person falls, and the safety belts worn by the construction workers become ineffective, resulting in secondary injuries to the workers.

[0043] In this application, a plurality of semi-circular fixing rings 22 are fixed at one end of the workbench 6, and an adjustment groove 23 is provided inside the other end of the workbench 6. The adjustment groove 23 is rectangular, and a movable screw 24 is rotatably installed in the adjustment groove 23. The movable screw 24 can move laterally. An adjustment sleeve 25 is rotatably installed at the other end of the movable screw 24, so that when the movable screw 24 rotates, the adjustment sleeve 25 only moves and does not rotate. The end of the adjustment sleeve 25 has an adjustment ring 26. Both the fixing rings 22 and the adjustment ring 26 are semi-circular, and their openings face the column on the upper ladder 5.

[0044] As an example, in order to achieve the rotational connection between the movable lead screw 24 and the adjusting sleeve 25, an adjusting groove is provided in the adjusting sleeve 25. The diameter of the adjusting groove is larger than the diameter of the movable lead screw 24 that partially extends into it, so that when the adjusting disc 27 moves, it can pull and push the adjusting sleeve 25 to move, so that when the movable lead screw 24 rotates, the adjusting sleeve 25 only moves and does not rotate.

[0045] As an example, in order to realize the rotational movement of the movable lead screw 24, a worm gear 28 is sleeved on the movable lead screw 24. The worm gear 28 is threadedly connected to the movable lead screw 24. The worm gear 28 is engaged with a worm 29. The worm 29 extends through the worktable 6 to the outside and is fixed with a knob. A limiting screw sleeve 30 is fixed in the adjusting groove 23, which is sleeved on the movable lead screw 24 and threadedly connected to the movable lead screw 24.

[0046] When installing the workbench, first press the retaining ring 22 against one end of the column, then rotate the worm gear 29. The worm gear 29 drives the worm wheel 28 to rotate. The worm wheel 28 is threadedly connected to the moving lead screw 24. The worm wheel 28 drives the moving lead screw 24 to rotate. Since the limiting screw sleeve 30 is fixed and threadedly connected to the moving lead screw 24, the moving lead screw 24 moves forward while rotating. Since the moving lead screw 24 is rotatably connected to the adjusting sleeve 25, the moving lead screw 24 drives the adjusting ring 26 to move, thereby adjusting the ring 26 to lock the column. Since the moving lead screw 24 is threaded and the worm wheel 28 and worm gear 29 are self-locking, the adjusting ring 26 will not move in the opposite direction when the workbench 6 is working.

[0047] As an example, in order to achieve stability when the moving lead screw 24 moves, a guide hole 31 is provided at one end of the moving lead screw 24 in the adjustment groove 23, and a guide rod 32 that slides and matches the guide rod 32 is fixed in the adjustment groove 23, so that the moving lead screw 24 moves more stably.

[0048] As an example, in order to further ensure the stability of the moving lead screw 24, a tightening nut is provided on the moving lead screw 24 located outside the adjustment groove 23. After the position of the moving lead screw 24 is fixed, the tightening nut is tightened, and the tightening nut moves to the left and abuts against the outer wall of the worktable 6 to further fix the moving lead screw 24.

[0049] As an example, in order to further improve the stability of the workbench 6, a plug rod 33 is fixed on the fixed buckle 22 and the adjusting buckle 26, and a matching plug hole is opened on the corresponding column of the upper ladder 5, so that when the fixed buckle 22 and the adjusting buckle 26 are clamped, the plug rod 33 is inserted into the plug hole, which further improves the safety and stability of the workbench 6 during use.

[0050] The overall working principle of this utility model is as follows:

[0051] 1. When not in use, the side railing 7, upper ladder 5, and lower ladder 4 are folded and placed on the base plate 1, the workbench 6 is placed on top of it, the diagonal brace 8 and the horizontal railing 9 are stored in the storage box 10, and the casters 3 are in contact with the ground for easy movement of the whole unit.

[0052] 2. When in use, rotate and open the lower ladder 4, upper ladder 5, and side railing 7, and lock them with the sliding locking shell 11. Place the fixing ring 22 of the workbench 6 against one end of the column, rotate the worm gear 29, which drives the worm wheel 28 to rotate, and the worm wheel 28 drives the moving screw 24 to rotate. Under the action of the limit screw sleeve 30, the moving screw 24 moves, and the moving screw 24 pushes the adjusting sleeve 25 to move, so that the adjusting ring 26 abuts against the column at the other end. At the same time, the insertion rod 33 is inserted into the insertion hole.

[0053] 3. Attach the diagonal brace 8 and the horizontal railing 9 to the corresponding columns.

[0054] 4. Lift one corner with your hand and slide the collar 13 downward. The collar 13 will drive the support rod 14 to unfold, and the three stabilizing plates 16 will support the ground. Then rotate the adjusting seat 18 so that the caster wheel 3 rotates and leaves the ground, and the stabilizing seat 21 contacts the ground for support. Adjust the other three stabilizing plates 16 and the stabilizing seat 21 in turn, and then lock the brake of the caster wheel 3.

[0055] 5. Place the counterweights according to the location of the site, and put them in the base plate 1 and storage box 10.

[0056] The present invention has the following technical effects.

[0057] 1. This utility model, through the cooperation of the base plate and the storage box, allows the base plate and the storage box to store various parts when not in use, making them easy to move. When in use, the base plate and the storage box can hold counterweights, increasing the stability and safety of the scaffolding.

[0058] 2. This utility model, through the cooperation of collar, support rod, connecting rod and base, enables the stabilizing plate to unfold into a triangular stable structure, while increasing the area of ​​the support points. Combined with the stabilizing seat, it achieves four-point support, further increasing the stability of the bottom of the scaffold and increasing the safety of the scaffold.

[0059] 3. This utility model provides self-locking support for the columns at both ends of the climbing ladder through fixed buckles and adjustable buckles. Even if the scaffolding shakes and tilts, it will not fall apart. In the event of a fall, the construction workers will not be left without support. The safety belt can play a safety role and will not cause secondary injuries to the workers.

[0060] Although the present invention has been described in detail through the above preferred embodiments, it should be understood that the above description should not be considered as a limitation of the present invention. Various modifications and substitutions to the present invention will be obvious to those skilled in the art after reading the above content. Therefore, the scope of protection of the present invention should be defined by the appended claims.

Claims

1. A type of construction safety scaffold, characterized in that, Includes a base plate (1), with multiple support shafts (2) fixed at the lower end of the base plate (1), casters (3) installed below the support shafts (2), a lower ladder (4) symmetrically rotated on both sides of the base plate (1), an upper ladder (5) rotatably installed above the lower ladder (4), a workbench (6) detachably installed on the upper ladder (5), a side railing (7) rotatably installed above the upper ladder (5), a diagonal brace (8) detachably installed between the upper ladder (5) and the lower ladder (4), a horizontal railing (9) detachably installed between the two side railings (7), and storage boxes (10) symmetrically fixed on both sides of the base plate (1).

2. The construction safety scaffolding according to claim 1, characterized in that, Locking shells (11) are slidably installed at the turning points of the lower ladder (4) and the upper ladder (5), the turning points of the upper ladder (5) and the side railing (7), and the turning points of the lower ladder (4).

3. The construction safety scaffolding according to claim 2, characterized in that, A chassis (12) is fixed on the support shaft (2). The upper end of the chassis (12) is provided with a collar (13) that is slidably mounted on the support shaft (2). Multiple support rods (14) that are evenly distributed in a circle are hinged on the collar (13). A connecting rod (15) is hinged on the support rod (14). The other end of the connecting rod (15) is hinged to the chassis (12).

4. The construction safety scaffolding according to claim 3, characterized in that, The lower end of the support rod (14) is rotatably mounted with a stabilizing plate (16), and a fixing hole (17) is provided on the stabilizing plate (16).

5. The construction safety scaffolding according to claim 4, characterized in that, An adjusting seat (18) is rotatably mounted on the lower end of the support shaft (2). The adjusting seat (18) and the support shaft (2) are provided with corresponding arc-shaped adjusting holes (19). A locking bolt (20) is installed in the adjusting hole (19). A caster wheel (3) is installed on the lower end of the adjusting seat (18). A stabilizing seat (21) is fixed on the side of the adjusting seat (18).

6. The construction safety scaffolding according to claim 5, characterized in that, One end of the workbench (6) is fixed with a plurality of semi-circular fixing rings (22), and the other end of the workbench (6) is provided with an adjustment groove (23). A movable screw (24) is rotatably installed in the adjustment groove (23), and an adjustment sleeve (25) is rotatably installed at the other end of the movable screw (24). An adjustment ring (26) is fixed to the adjustment sleeve (25).

7. The construction safety scaffolding according to claim 6, characterized in that, One end of the movable lead screw (24) is fixed with an adjusting disc (27), and the adjusting sleeve (25) has an adjusting groove that matches the adjusting disc (27).

8. A construction safety scaffold according to claim 7, characterized in that, The movable lead screw (24) is fitted with a worm gear (28), which meshes with a worm (29). The worm (29) is partially placed outside the worktable (6), and a limiting screw sleeve (30) fitted on the movable lead screw (24) is fixed in the adjusting groove (23).

9. A construction safety scaffold according to claim 8, characterized in that, The movable lead screw (24) is coaxially provided with a guide hole (31), and the end of the adjusting groove (23) is fixed with a guide rod (32).

10. A construction safety scaffold according to claim 9, characterized in that, The fixing buckle (22) and adjusting buckle (26) are fixed with insert rods (33), and the upper ladder (5) has corresponding holes.

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