Foundation pit side wall spraying, protecting and plastering tool

Abstract

The utility model belongs to the field of foundation pit construction, and particularly relates to a foundation pit side wall spraying, protecting and plastering tool which comprises two parallel vertical rods, sliding grooves are formed in the vertical rods in the length direction, L-shaped plastering plates are symmetrically arranged on the vertical rods, the two ends of each L-shaped plastering plate are fixed together through a connecting plate, round holes corresponding to the sliding grooves are formed in the two sides of each L-shaped plastering plate, and the round holes are communicated with the sliding grooves. A sliding bolt penetrates through the circular hole and penetrates through the sliding groove downwards to be connected with the sliding block. An upper stop lever and a lower stop lever are arranged at the upper end and the lower end of the vertical rod respectively and are fixed to the vertical rod through fastening bolts. A hanging piece is rotationally connected to the upper surface of the L-shaped patter on the upper portion and can be hung on the upper stop lever. According to the tool, the thickness of sprayed concrete can be controlled, the sprayed concrete can be troweled rapidly, and the construction efficiency and quality are greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of foundation pit construction, especially relates to a foundation pit side wall spray protection trowelling tool. BACKGROUND

[0002] The pile soil spraying concrete in the foundation pit support is a common construction method, aiming at enhancing the stability of the foundation pit side wall, preventing soil erosion and collapse. During the foundation pit earthwork excavation process, the net is fixed on the pile body, and then the concrete spraying operation is carried out. The thickness of the sprayed concrete needs to be controlled within a certain range, and too thin or too thick will affect its performance. At present, the spraying method is mostly direct spraying, and the spraying thickness is judged according to the experience of workers. In addition, after spraying the concrete, the sprayed concrete needs to be trowelled to keep the surface flat. At present, workers mostly use molds to trowel manually, which is low in construction efficiency and the trowelling effect cannot be guaranteed. Sometimes there are obvious thickness differences and unevenness. SUMMARY

[0003] The problem to be solved by the present application is to overcome the shortcomings of the background art and provide a foundation pit side wall spray protection trowelling tool.

[0004] The present application is realized by the following technical solutions:

[0005] A foundation pit side wall spray protection trowelling tool, comprising two parallel vertical rods, the thickness of the vertical rod being equal to the required concrete thickness, a sliding groove being provided on the length direction of the vertical rod, the sliding groove being narrow outside and wide inside, L-shaped trowelling plates being symmetrically provided on the vertical rod, the two L-shaped trowelling plates being fixed together at both ends through a connecting plate, circular holes corresponding to the sliding groove being provided on both sides of the L-shaped trowelling plate, a sliding bolt being passed through the circular hole, a nut being provided on the sliding bolt, the sliding bolt being connected with a sliding block in the sliding groove through the sliding groove; upper and lower stop rods being respectively provided at the upper and lower ends of the vertical rod, the two ends of the upper and lower stop rods being fixed together with the vertical rod through fastening bolts; a hanging piece being rotatably connected to the upper surface of the upper L-shaped trowelling plate, the hanging piece being hung on the upper stop rod.

[0006] Preferably, an adjusting short column is provided on the side surface of the upper stop rod facing the foundation pit side wall.

[0007] Preferably, the adjusting short column is inclined upward by 10-20°, and the length of the adjusting short column is 2-5 cm.

[0008] Preferably, a dustproof belt is attached to the outer surface of the vertical rod, and the dustproof belt is provided with a slit along the length direction of the vertical rod at the position corresponding to the sliding groove.

[0009] Preferably, the dustproof belt is a rubber belt.

[0010] Preferably, the hanging piece is an L-shaped hook, the lower end of the hanging piece is provided with a sleeve, and the upper surface of the L-shaped trowel is provided with a fixed shaft, and the sleeve of the hanging piece is sleeved on the fixed shaft and connected with the fixed shaft.

[0011] Preferably, the connecting plate is an angle iron.

[0012] Preferably, the sliding block is a roller sliding block.

[0013] Preferably, the vertical rod has a thickness of 8-10 cm.

[0014] The tool can control the thickness of the sprayed concrete, ensure the performance of the concrete, and quickly smooth the sprayed concrete, the smoothing effect is fast, the smoothing effect is more uniform than manual smoothing, and the construction efficiency and quality are greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is the overall structure schematic diagram of the embodiment with a dustproof belt;

[0016] Figure 2 It is the overall structure schematic diagram of the embodiment without a dustproof belt;

[0017] Figure 3 It is the rear side partial structure schematic diagram of the embodiment;

[0018] Figure 4 It is the side view partial structure schematic diagram of the embodiment;

[0019] Figure 5 It is the hanging piece structure schematic diagram of the embodiment;

[0020] Figure 6 It is the upper partial structure schematic diagram of the embodiment;

[0021] Figure 7 It is the lower stop rod split structure schematic diagram of the embodiment;

[0022] Figure 8 It is the roller sliding block structure schematic diagram of the embodiment;

[0023] Figure 9 It is the partial structure schematic diagram of the embodiment with a sliding bolt removed.

[0024] In the figure, 1 is a vertical rod, 2 is a sliding groove, 3 is an L-shaped trowel, 4 is a connecting plate, 5 is a round hole, 6 is a sliding bolt, 7 is a nut, 8 is a sliding block, 9 is an upper stop rod, 10 is a lower stop rod, 11 is a fastening bolt, 12 is a hanging piece, 13 is an adjusting short column, 14 is a dustproof belt, 15 is a joint, 16 is a sleeve, and 17 is a fixed shaft. DETAILED DESCRIPTION

[0025] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application.

[0026] The embodiment includes two parallel vertical rods 1, and a sliding groove 2 is arranged along the length direction of the vertical rod 1, the sliding groove 2 penetrates the upper and lower ends of the vertical rod 1, the sliding groove 2 is narrow outside and wide inside, that is, the opening of the sliding groove 2 is narrow, and the internal space is large, which is to prevent the sliding block 8 inside from falling out of the sliding groove 2. The upper and lower ends of the vertical rod 1 are respectively provided with an upper blocking rod 9 and a lower blocking rod 10, the upper blocking rod 9 and the lower blocking rod 10 are fixedly connected together to form a rectangular frame. The two ends of the upper blocking rod 9 and the lower blocking rod 10 are fixed together with the vertical rods 1 on the left and right sides through fastening bolts 11, threaded holes are arranged on the end faces of the upper end and the lower end of the vertical rod 1, and corresponding threaded holes are also arranged on the two ends of the upper blocking rod 9 and the lower blocking rod 10, the fastening bolts 11 are screwed into the threaded holes to fix the upper blocking rod 9 and the lower blocking rod together with the vertical rod 1. In use, the concrete is sprayed into the rectangular frame composed of the upper blocking rod 9, the lower blocking rod and the two vertical rods 1, and the vertical rod 1 can be used to control the thickness of the sprayed concrete, and the thickness of the concrete sprayed on the side wall of the foundation pit is generally required to be 8-10 cm, so the thickness of the vertical rod 1 is preferably 8-10 cm.

[0027] L-shaped trowels 3 are symmetrically arranged on the two vertical rods 1, the two L-shaped trowels 3 are vertically distributed on the vertical rod 1, and the two L-shaped trowels 3 are attached to the surface of the sliding groove 2 of the vertical rod 1. The left and right ends of the two L-shaped trowels 3 are fixed together through a connecting plate 4, so that the upper and lower L-shaped trowels 3 are connected together. In the embodiment, angle irons are used to fix the upper and lower L-shaped trowels 3 together, and the angle irons are welded together with the upper and lower L-shaped trowels 3. Circular holes 5 are arranged on the left and right sides of the L-shaped trowel 3 corresponding to the positions of the sliding groove 2, sliding bolts 6 pass through the circular holes 5, nuts 7 are arranged on the sliding bolts 6, the sliding bolts 6 pass through the sliding groove 2 to connect the sliding blocks 8 inside the sliding groove 2, and the sliding blocks 8 can move up and down inside the sliding groove 2. There are two sliding blocks 8 on each side of the L-shaped trowel 3, and there are a total of four sliding blocks 8. The size of the sliding block 8 is larger than the opening of the sliding groove 2, and the sliding block 8 cannot fall out of the sliding groove 2, but can only be installed into the sliding groove 2 from the upper end or the lower end of the vertical rod 1. In the embodiment, the sliding block 8 is preferably a roller sliding block, which can roll in the sliding groove 2. The nut 7 on the rotating sliding bolt 6 is rotated to attach the L-shaped trowel 3 to the sliding groove 2 of the vertical rod 1, and the L-shaped trowel 3 can also slide up and down on the surface of the sliding groove 2 when it is not attached to the sliding groove 2. The sliding block 8 moves up and down in the sliding groove 2 to drive the two L-shaped trowels 3 to slide up and down along the outer surface of the sliding groove 2, so as to smooth the concrete sprayed between the two vertical rods 1.

[0028] Before the two L-shaped screeds 3 are leveled, they can be hung on the upper blocking rod 9, so a hanging piece 12 is arranged on the upper surface of the upper L-shaped screed 3, the hanging piece 12 is rotatably connected with the L-shaped screed 3, the hanging piece 12 can be hung on the upper blocking rod 9 by rotating upward, and the upper and lower L-shaped screeds 3 connected with the hanging piece 12 are also hung in the air and will not slide down due to gravity. In the embodiment, the hanging piece 12 is an L-shaped hook, a sleeve 16 is arranged at the lower end of the hanging piece 12, a fixed shaft 17 is fixed on the upper surface of the upper L-shaped screed 3 by a fixed plate, the sleeve 16 of the hanging piece 12 is sleeved on the fixed shaft 17 between the two fixed plates, and the sleeve 16 can rotate around the fixed shaft 17, so that the hanging piece 12 is rotatably connected with the fixed shaft 17. The hanging piece 12 can be hung on the upper blocking rod 9 by rotating upward, and the hanging piece 12 can be separated from the upper blocking rod 9 by rotating downward.

[0029] Since the side wall of the foundation pit is not completely vertical sometimes, there is a slight inclination, so it is preferred that an adjusting short column 13 is arranged on the side surface of the upper blocking rod 9 facing the side wall of the foundation pit, and in the embodiment, one adjusting short column 13 is arranged on each side of the upper blocking rod 9, the adjusting short column 13 is inclined upward by 10-20°, and the length is between 2-5 cm. The hanging net of the tool is leaned against, the adjusting short column 13 can be inserted into the soil between the piles, and the tool can be adjusted to be vertical by adjusting the depth of the adjusting short column 13 inserted into the soil between the piles.

[0030] Since some concrete will enter the chute 2 after a period of use, the interior of the chute 2 needs to be cleaned regularly, in order to reduce the frequency of cleaning, it is preferred that a dustproof belt 14 is attached to the outer surface of the vertical rod 1, the dustproof belt 14 covers the chute 2 by being attached to the outer surface of the vertical rod 1, and the dustproof belt 14 is provided with a slit 15 along the length direction of the vertical rod 1 at the position corresponding to the chute 2, the slit 15 is for the sliding bolt 6 to pass through and does not hinder the upward and downward sliding of the L-shaped screed 3. It is preferred that the dustproof belt 14 can be selected from a rubber belt, and a relatively thin rubber belt is selected. Since the rubber belt is flexible, the sliding bolt 6 can slide through the slit 15 without being hindered, and the rubber belt blocks most of the sprayed concrete from entering the chute 2.

[0031] When the foundation pit is excavated to a certain depth, the net is fixed on the pile body, then the tool is leaned on the net, the verticality of the vertical rod 1 is adjusted by using the level, the vertical rod 1 is attached to the net, the adjusting short column 13 is inserted into the soil between the piles, if the side wall of the foundation pit is slightly inclined, the verticality of the vertical rod 1 can be adjusted by adjusting the depth of the adjusting short column 13 inserted into the soil between the piles, after the adjustment, the hanging piece 12 is hung on the upper stop rod 9, then the concrete is sprayed into the rectangular frame surrounded by the two vertical rods 1, the upper stop rod 9 and the lower stop rod, the thickness of the sprayed concrete is slightly higher than that of the vertical rod 1, after the sprayed concrete reaches the thickness, the worker turns the hanging piece 12, the worker pulls the L-shaped trowel 3 to move downward, the two L-shaped trowels 3 smooth the sprayed concrete, at the same time, the excess concrete is scraped off, the trowel can be pulled up and down several times to achieve the best smoothing effect, then the tool is moved left and right to construct the side wall of the foundation pit piece by piece. When the construction of the excavation is completed, the excavation is continued to be excavated downward, the concrete spraying and smoothing of the next layer are carried out in the same way. During the whole process, the position of the vertical rod 1 can be sprayed with concrete and manually smoothed.

[0032] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, and not to limit them; those skilled in the art should understand that: they can still modify the technical solutions recorded in the above examples, or make equivalent replacement for part of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A tool for spraying and plastering the sidewall of a foundation pit, characterized in that: The utility model provides a kind of concrete spraying device, including two parallel vertical poles (1), vertical pole (1) thickness is equal to the thickness of concrete required to be sprayed, vertical pole (1) length direction is equipped with sliding groove (2), sliding groove (2) is outside narrow and inside wide, vertical pole (1) is equipped with L-shaped trowel (3) symmetrically, two L-shaped trowel (3) two ends are fixed together by connecting plate (4), L-shaped trowel (3) both sides are equipped with corresponding round hole (5) with sliding groove (2), round hole (5) is passed through sliding bolt (6) inside, sliding bolt (6) is equipped with nut (7) on, sliding bolt (6) passes through sliding groove (2) and connects sliding block (8) in sliding groove (2);The vertical pole (1) upper and lower ends are respectively equipped with upper stop bar (9) and lower stop bar (10), and the two ends of the upper stop bar (9) and the lower stop bar (10) are fixed together with the vertical pole (1) by the fastening bolt (11).Rotatably connected with the hanging piece (12) on the upper surface of the upper L-shaped trowel (3), the hanging piece (12) can be hung on the upper stop bar (9).

2. A trench wall protection tool according to claim 1, wherein: The upper stop bar (9) is provided with an adjusting short column (13) on the side surface facing the side wall of the foundation pit.

3. A trench wall protection trowelling tool according to claim 2, wherein: The adjusting short column (13) is inclined upward by 10-20°, and the length of the adjusting short column (13) is 2-5 cm.

4. A tool for applying a shot finish to a side wall of an excavation according to claim 1 or 2, wherein: A dustproof belt (14) is attached to the outer surface of the vertical pole (1), and the dustproof belt (14) is provided with a slit (15) along the length direction of the vertical pole (1) at the position corresponding to the sliding groove (2).

5. A trench wall protection tool according to claim 4, wherein: The dustproof belt (14) is a rubber belt.

6. A trench wall protection tool according to claim 1 or 2, wherein: The hanging piece (12) is an L-shaped hook, and the lower end of the hanging piece (12) is provided with a sleeve (16). The upper surface of the upper L-shaped trowel (3) is provided with a fixed shaft (17), and the sleeve (16) of the hanging piece (12) is sleeved on the fixed shaft (17) and rotatably connected with the fixed shaft (17).

7. A trench wall protection tool according to claim 1 or 2, wherein: The connecting plate (4) is an angle iron.

8. A trench wall protection tool according to claim 1 or 2, wherein: The sliding block (8) is a roller sliding block.

9. A trench wall protection tool according to claim 1 or 2, wherein: The thickness of the vertical pole (1) is 8-10 cm.

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