Rapid positioning device and method for single-foundation foundation pit excavation

Abstract

The invention relates to the technical field of foundation pit excavation positioning, and discloses a single-foundation foundation pit excavation rapid positioning device and method.The single-foundation foundation pit excavation rapid positioning device comprises a square frame used for corresponding to an external expansion side line; the centers of the two center rods are vertically connected, and the end parts of the center rods are connected with the inner sides of the midpoints of the square frames; two ends of each marker post are respectively and vertically connected with two opposite borders of the square frame, and the two ends of each marker post are parallel to the other two opposite borders of the square frame; the four marker posts define a square located on the inner side of the square frame and equidistant from the square frame, and marker post sections on the four sides of the square are used for corresponding to foundation side lines. According to the method, the foundation pit can be positioned by measuring and positioning the axis of the foundation, or the foundation pit can be positioned without positioning the foundation again under the condition that building shaft net paying-off exists, the paying-off efficiency is remarkably improved, and the measuring, positioning and paying-off workload is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of foundation pit excavation positioning, and in particular to a device and method for rapid positioning of a single foundation pit excavation. Background Art

[0002] At present, the foundation positioning and laying out in construction engineering mainly uses a total station or theodolite to determine the coordinates of the four corner points of the foundation, and then according to the operation spacing requirements required by the workers, as shown in the attached Fig. 9 , based on the actual positioning of the foundation, each side is enlarged by about 0.5 meters to excavate the single foundation pit. At present, it takes multiple measurements to locate a foundation, which greatly reduces the efficiency of measurement and setting out. Summary of the invention

[0003] The purpose of the present invention is to solve the above-mentioned problems in the prior art and to provide a rapid positioning device and method for excavating a single foundation pit.

[0004] To achieve the above object, the present invention provides the following technical solutions: A rapid positioning device for excavating a single foundation pit, comprising: A square frame is used to correspond to the outer expansion edge; Two central rods connected vertically at the center, the ends of the central rods being connected to the inner sides of the midpoints of the square frame borders; Four poles, both ends of which are respectively connected perpendicularly to two opposite borders of the square frame and parallel to the other two opposite borders of the square frame; The four poles form a square located inside the square frame and equidistant from the square frame, and the pole segments on the four sides of the square are used to correspond to the basic side lines.

[0005] Furthermore, the end of the pole moves along the border of the square frame, and scales are provided on the outer side of the border of the square frame.

[0006] Furthermore, the benchmark is a flexible rod; the benchmark includes an elastic rope and hooks connected to both ends of the elastic rope; the benchmark is hung on the outside of the square frame through the hooks.

[0007] Furthermore, the benchmark rods are hard rods, four benchmark rods are vertically cross-connected, and the benchmark rods separate the central rod.

[0008] Furthermore, the square frame and the pole are both hollow structures, the interiors of the pole ends are connected to the interior of the square frame; the interiors of the vertically cross-connected poles are connected; the square frame is connected to a liquid injection port; and the lower side of the square frame and the lower side of the pole are connected to a plurality of liquid outlets.

[0009] Furthermore, two support strips are symmetrically hinged on the lower side of the frame of the square frame and the lower side of the benchmark, and pressure plates corresponding to the support strips are provided on the upper side of the frame of the square frame and the upper side of the benchmark. A number of lifting columns are connected to the lower side of the pressure plates, and the lifting columns slide vertically through the square frame or the benchmark, and the lower ends of the lifting columns are hinged to the middle parts of the two support strips through connecting rods.

[0010] Furthermore, a coil spring is sleeved on the outer side of the lifting column on the lower side of the pressure plate, and the lower end of the coil spring abuts against the upper side of the square frame or the pole; the coil spring moves the pressure plate and the lifting column upward; the lifting column makes the lower ends of the two support strips fit into a V shape through a connecting rod.

[0011] The present invention also provides the following technical solutions: A positioning method for a rapid positioning device for excavating a single foundation pit, the positioning method comprising the following steps: S1. Prepare the wire-laying slurry; select lime and sieve it, mix the sieved lime with water, and let it stand until it reaches room temperature to form a white wire-laying slurry; S2. Measure and determine the foundation axis, make the center rod correspond vertically to the foundation axis and place the quick positioning device on the upper side of the ground; S3, injecting the wire-laying slurry into the quick positioning device through the liquid injection port; the wire-laying slurry is discharged from the liquid outlet and falls onto the ground; S4. Stop injecting the laying-out slurry, move the quick positioning device to the next foundation axis, and then inject the laying-out slurry into the quick positioning device.

[0012] Compared with the prior art, the present invention has the following beneficial effects: The present invention can realize the positioning of the foundation pit by measuring and positioning the foundation axis, or can realize the positioning of the foundation pit without positioning the foundation again when the building axis network has been laid out, thereby significantly improving the laying efficiency and reducing the workload of measuring, positioning and laying out. The present invention has a hollow slurry channel, which allows liquid laying material to pass through and flow out from the liquid outlet to directly realize positioning and laying out. The use of liquid slurry overturns the traditional white lime throwing and laying out method, and the laying out is clearer, faster and more sufficient, which greatly improves the laying out efficiency, makes the combination with the soil and the ground more stable, and reduces the damage of the white line. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a plan view of the present invention.

[0014] Figure 2 This is a schematic diagram of the benchmark of Example 1.

[0015] Figure 3 This is a schematic diagram of the three-dimensional structure of Example 2 from an upper side perspective.

[0016] Figure 4This is a schematic diagram of the three-dimensional structure from a lower side perspective of Example 2.

[0017] Figure 5 It is a schematic diagram of the three-dimensional structure from a side view with the support strips and connecting rods of Example 2 removed.

[0018] Figure 6 Schematic diagram of the lifting column and its connection structure of Example 2.

[0019] Figure 7 This is a schematic diagram of the action structure of Example 2.

[0020] Figure 8 for Figure 7 Enlarged end view.

[0021] Fig. 9 This is a schematic diagram of the positioning and laying-out plan of the prior art.

[0022] In the figure: 1. square frame; 2. corner brace; 3. center rod; 4. benchmark; 5. hook; 6. liquid filling port; 7. liquid outlet; 8. support strip; 9. lifting column; 10. connecting rod; 11. pressure plate; 12. coil spring. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] In the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" that may appear 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, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the term "provided with" that may appear should be understood in a broad sense. For example, the object "provided with" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or an inseparable connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] Specific embodiment 1 of the rapid positioning device and method for excavating a single foundation pit provided by the present invention: See also Figure 1-2 The invention discloses a rapid positioning device for excavating a single foundation pit, comprising a square frame 1, two central rods 3 vertically connected at the center and four marking rods 4.

[0027] The square frame 1 is used to correspond to the outward expansion edge line; the end of the center rod 3 is connected to the inner side of the midpoint of the frame of the square frame 1; the center rod 3 is connected to the inner side of the square frame 1 and is used to correspond to the basic axis. The center rod 3 can also play a role in strengthening the square frame 1 and reducing the deformation of the square frame 1. In some other embodiments, the inner side of the corner of the square frame 1 is provided with a corner brace 2, and the corner brace 2 is a steel bar. The two ends of the corner brace 2 are respectively connected to the inner side of the two frame ends vertically connected to the square frame 1, and the corner brace 2 further strengthens the square frame 1 and reduces the deformation of the square frame 1.

[0028] The two ends of the marker rod 4 are respectively connected vertically to the two opposite frames of the square frame 1 and are parallel to the other two opposite frames of the square frame 1; the four marker rods 4 form a square located inside the square frame 1 and equidistant from the square frame 1, and the 4 segments of the marker rods on the four sides of the square are used to correspond to the basic edge lines.

[0029] In this embodiment, the pole 4 is a flexible pole; when the pole 4 is a flexible pole, the pole 4 includes an elastic rope and hooks 5 connected to both ends of the elastic rope; the pole 4 is hung on the outer side of the frame of the square frame 1 through the hooks 5.

[0030] The hook 5 at the end of the marker rod 4 can move along the frame of the square frame 1. The outer side of the frame of the square frame 1 is provided with scales, and the scales of the relative frames correspond to each other, which plays an indicating role, so that the marker rod 4 is convenient to be vertically hung with the frame. The marker rod 4 can move along the frame, because the marker rod 4 is used to correspond to the basic edge line, so it can adapt to basic edges of different sizes, improving applicability.

[0031] In this embodiment, the square frame 1 and the center rod 3 are made of thin-walled stainless steel pipes and are welded together to form a quick positioning device.

[0032] The positioning and setting-out method of this embodiment is as follows: the foundation axis is measured and determined, the center rod 3 is vertically aligned with the foundation axis (building axis), the intersection of the two center rods 3 corresponds to the center point of the foundation axis, and the rapid positioning device is placed on the upper side of the ground; According to the size of the building foundation, adjust the position of the benchmark 4 to the corresponding scale to determine the foundation boundary; Sprinkle white lime along the square edge segments corresponding to the square frame 1 and the benchmark 4, thus determining the foundation edge line and the outer expansion edge line of the foundation excavation.

[0033] At present, the positioning of foundation pit requires multiple measurements to determine the excavation boundary of the foundation pit; with the device of the present invention, it is only necessary to locate the foundation axis and then adjust the benchmark 4 to locate the position of the foundation and the excavation boundary of the foundation pit. The workload of measurement and positioning is reduced by 75%, and the laying efficiency is increased by more than 50%.

[0034] Specific embodiment 2 of the rapid positioning device and method for excavating a single foundation pit provided by the present invention: See also Figure 1 and Figure 3-8 The difference between this embodiment and embodiment 1 is that: the marking rod 4 is a hard rod; when the marking rod 4 is a hard rod, four marking rods 4 are vertically cross-connected, and the marking rods 4 separate the central rod 3.

[0035] The square frame 1 and the bar 4 are both hollow structures. In this embodiment, the frame of the square frame 1 and the cross section of the bar 4 are both rectangular frame structures. The interior of the ends of the bar 4 are connected to the interior of the square frame 1; the vertically cross-connected bar 4 is connected to the interior; the square frame 1 is connected to a liquid injection port 6, and a threaded joint is provided at the outer end of the liquid injection port 6 to facilitate connection with an external pipeline; the lower side of the square frame 1 and the lower side of the bar 4 are connected to a plurality of liquid outlets 7, and the liquid outlets 7 are evenly arranged. Specifically, the liquid outlets 7 are evenly arranged on the lower side of the square frame 1, and the lower side of the parts of the bar 4 on the four sides of the square are evenly arranged with liquid outlets 7, and no liquid outlet 7 is arranged on the lower side of the ends of the bar 4. In order to ensure that the slurry injected from the liquid injection port 6 can be discharged from the liquid outlets 7 at various locations and to ensure the uniformity of the discharge, multiple liquid injection ports 6 are provided in this embodiment; when injecting liquid, slurry is added to each liquid injection port 6 at the same time.

[0036] The lower side of the frame of the square frame 1 and the lower side of the mark bar 4 are symmetrically hinged with two support strips 8, and the support strips 8 are hinged to the edge of the lower side of the frame of the square frame 1 or the lower side of the mark bar 4. The upper side of the frame of the square frame 1 and the mark bar 4 are provided with a pressing plate 11 corresponding to the support strip 8, and the lower side of the pressing plate 11 is connected to a plurality of lifting columns 9, which vertically slide through the square frame 1 or the mark bar 4, and the lower end of the lifting column 9 and the middle of the two support strips 8 are hinged through a connecting rod 10.

[0037] In this embodiment, there are eight pressing plates 11 and sixteen supporting strips 8; one pressing plate 11 corresponds to two supporting strips 8 at the lower side, and a plurality of lifting columns 9 are connected to the lower side of each pressing plate 11; the pressing plates 11 are parallel to the corresponding supporting strips 8. The length of the pressing plate 11 above the square frame 1 is greater than the length of the pressing plate 11 above the pole 4; the length of the supporting strips 8 at the lower side of the square frame 1 is greater than the length of the supporting strips 8 at the lower side of the pole 4.

[0038] A coil spring 12 is sleeved on the outside of the lifting column 9 on the lower side of the pressure plate 11, and the lower end of the coil spring 12 abuts against the upper side of the square frame 1 or the benchmark 4; when there is no external force, the coil spring 12 moves the pressure plate 11 and the lifting column 9 upward; the lifting column 9 makes the lower ends of the two support strips 8 fit into a V shape through the connecting rod 10, and at this time the angle between the support strip 8 and the vertical plane is 10-20 degrees; the two connecting rods 10 at the lower end of the lifting column 9 are in an inverted V shape; when a downward force is applied to the pressure plate 11 from the upper side of the pressure plate 11, the pressure plate 11 and the lifting column 9 descend to increase the angle of the connecting rod 10, and the connecting rod 10 deflects to the horizontal state, so that the lower ends of the two symmetrically opposite support strips 8 are separated and opened, and rotated to the vertical state.

[0039] In the prior art, after the edge line is measured and positioned, white lime is sprinkled along the measured edge line in sequence. This process is relatively slow and labor-intensive, which affects the efficiency of positioning and laying out. Moreover, the sprinkled white lime only covers the upper side of the ground soil, and the white lime edge line is easily damaged by the passing of personnel and machinery on the construction site. The stability of the white lime line is poor, and its bonding with the ground soil is also poor.

[0040] The positioning method of the single foundation pit excavation rapid positioning device of this embodiment includes the following steps: S1. Prepare the wire-laying slurry; select the lime and sieve it to remove the large particles of impurities; mix the sieved lime with water to generate heat, and let it stand until it reaches room temperature to form a white wire-laying slurry; the weight ratio of the lime to water is 1: (2-3); prepare the white wire-laying slurry before use, and stir the white wire-laying slurry evenly.

[0041] S2, measure and determine the basic axis. This process is a prior art and will not be described in detail in this embodiment. Make the center rod 3 correspond vertically to the basic axis and place the quick positioning device on the upper side of the ground; S3, first press down the square frame 1, the square frame 1 and the pole 4 so that the two V-shaped support strips 8 on the lower side of each side extend into the ground soil; then use a heavy object or a person to press down on the upper side of the pressing plate 11, the pressing plate 11 and the lifting column 9 descend, and the two V-shaped support strips 8 are opened through the connecting rod 10 to support the soil and form a wire laying groove on the ground; inject the wire laying slurry into the rapid positioning device through the injection port 6 through the mud pump; the wire laying slurry is discharged from the outlet 7 and falls into the wire laying groove on the ground to fill the wire laying groove; S4, when the wire-laying slurry in the wire-laying groove is almost full, stop injecting the wire-laying slurry and let it stand until the slurry stops flowing out of the outlet 7, vertically pull out the quick positioning device, move the quick positioning device to the next foundation axis, and then inject the wire-laying slurry into the quick positioning device.

[0042] The use of white liquid laying-out slurry can quickly realize the synchronous laying-out of each edge line, which is completely different from the traditional method of sprinkling white lime for laying out. The liquid can be discharged from multiple places at the same time through multiple outlets 7, and the efficiency can be greatly improved. The use of pump pressurized grouting can further improve the laying-out efficiency. In some other embodiments, other low-cost environmentally friendly colored liquids can be used instead of the mixed slurry of white lime and water. The liquid laying-out slurry itself can penetrate into the soil and combine with the soil more stably, avoiding the easy destruction of the laid lines; by grooving the ground with the support strips 8, the laying-out material can be sufficient, penetrate into the soil to a certain depth, and can also better combine with the soil firmly, further avoiding the destruction of the laid lines, and the laying-out is neat and beautiful with clear boundaries.

[0043] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments without creative work, or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A rapid positioning device for excavation of a single foundation pit, characterized in that: include: A square frame (1) is used to correspond to the outer expansion edge; Two central rods (3) connected vertically at the center, the ends of the central rods (3) being connected to the inner side of the midpoint of the frame of the square frame (1); Four marking rods (4), the two ends of the marking rods (4) being respectively vertically connected to two opposite frames of the square frame (1) and parallel to the other two opposite frames of the square frame (1); The four marking rods (4) form a square located inside the square frame (1) and equidistant from the square frame (1), and the marking rod (4) segments on the four sides of the square are used to correspond to the basic edge lines.

2. The rapid positioning device for excavation of a single foundation pit according to claim 1 is characterized in that: The end of the marking rod (4) moves along the border of the square frame (1), and scales are provided on the outer side of the border of the square frame (1).

3. The rapid positioning device for excavation of a single foundation pit according to claim 2 is characterized in that: The pole (4) is a flexible pole; the pole (4) comprises an elastic rope and hooks (5) connected to both ends of the elastic rope; the pole (4) is hung on the outside of the frame of the square frame (1) via the hooks (5).

4. The rapid positioning device for excavation of a single foundation pit according to claim 1 is characterized in that: The marking rods (4) are hard rods, and the four marking rods (4) are vertically cross-connected, and the marking rods (4) separate the central rods (3).

5. The rapid positioning device for excavation of a single foundation pit according to claim 4 is characterized in that: The square frame (1) and the pole (4) are both hollow structures; the interior of the ends of the pole (4) are connected to the interior of the square frame (1); the interiors of the poles (4) connected vertically and crosswise are connected; the square frame (1) is connected to a liquid injection port (6); and the lower side of the square frame (1) and the lower side of the pole (4) are both connected to a plurality of liquid outlets (7).

6. The rapid positioning device for excavation of a single foundation pit according to claim 5 is characterized in that: The lower side of the frame of the square frame (1) and the lower side of the pole (4) are both symmetrically hinged with two support strips (8); the upper side of the frame of the square frame (1) and the upper side of the pole (4) are both provided with a pressing plate (11) corresponding to the support strips (8); the lower side of the pressing plate (11) is connected to a plurality of lifting columns (9); the lifting columns (9) vertically slide through the square frame (1) or the pole (4); the lower end of the lifting column (9) and the middle part of the two support strips (8) are hinged via a connecting rod (10).

7. The rapid positioning device for excavation of a single foundation pit according to claim 6 is characterized in that: A coil spring (12) is sleeved on the outer side of the lifting column (9) at the lower side of the pressure plate (11), and the lower end of the coil spring (12) abuts against the upper side of the square frame (1) or the pole (4); the coil spring (12) causes the pressure plate (11) and the lifting column (9) to move upward; the lifting column (9) causes the lower ends of the two support strips (8) to fit together in a V shape through a connecting rod (10).

8. The positioning method of the single foundation pit excavation rapid positioning device according to any one of claims 5 to 7, characterized in that: The positioning method comprises the following steps: S1. Prepare the wire-laying slurry; select lime and sieve it, mix the sieved lime with water, and let it stand until it reaches room temperature to form a white wire-laying slurry; S2. Measure and determine the foundation axis, make the center rod (3) correspond vertically to the foundation axis and place the quick positioning device on the upper side of the ground; S3, injecting the wire-laying slurry into the rapid positioning device through the liquid injection port (6); the wire-laying slurry is discharged from the liquid outlet (7) and falls onto the ground; S4. Stop injecting the laying-out slurry, move the quick positioning device to the next foundation axis, and then inject the laying-out slurry into the quick positioning device.

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