Foundation pit support gradient measuring instrument for engineering cost

Abstract

This utility model relates to the field of engineering construction technology and discloses a foundation pit support slope measuring instrument for engineering cost estimation. It includes a support platform, a support frame fixedly installed at the front of the top of the support platform, a sliding frame slidably installed inside the upper part of the support frame, and a measuring tape mounted on the sliding frame. Electric telescopic rods are installed on both sides and the rear end of the outer ring of the support platform. Support rods are fixedly connected to the ends of the drive shafts of the electric telescopic rods. Bolt columns are slidably installed at the bottom ends of the support rods via sliding rods, and self-locking universal casters are installed at the bottom ends of the bolt columns. The electric telescopic rods, support rods, self-locking universal casters, and support platform facilitate measurement and leveling without the need for tools to fill in depressions, thus improving adjustment efficiency and measurement data accuracy. This also allows the center of gravity to be transferred to the support platform, reducing the probability of displacement of the support platform or support frame during measurement.

Description

Technical Field

[0001] This utility model relates to the field of engineering construction technology, specifically to a foundation pit support inclination measuring instrument for engineering cost estimation. Background Technology

[0002] A foundation pit is an earthen pit excavated at the foundation design location according to the base elevation and foundation plane dimensions. Foundation pit support refers to the measures taken to support, reinforce and protect the side walls and surrounding environment of the foundation pit in order to ensure the safety of underground structure construction and the surrounding environment. The slope measurement of foundation pit support refers to the determination of the horizontal displacement and height difference of the top of the monitored object relative to the bottom of the building tilt monitoring, and the recording and calculation of the tilt degree and tilt direction of the monitored object.

[0003] A search revealed a Chinese patent for measuring the inclination of foundation pit support for engineering cost estimation, publication number CN213979083U. The patent includes a limiting mechanism, a measuring mechanism, and a fixing mechanism. The limiting mechanism includes a support rod with a U-shaped cross-section. The measuring mechanism includes a measuring tape with sliding rods fixed to both sides of the measuring tape.

[0004] The above-mentioned device works by placing a fixing plate in a suitable position, then pulling a screw to move the measuring tape along the snap-fit ​​hole to a suitable position, then tightening the first fastening bolt to fix the position of the measuring tape, then pulling the measuring tape to move it forward through the inside of the limiting frame to a suitable position, and finally calculating the inclination of the foundation pit by the length and height of the measuring tape.

[0005] However, its support structure is relatively simple, using only a fixed plate and a connecting rod to stand on the ground. Although it can be easily leveled, it needs to be leveled with pads or other support blocks when the ground is uneven. When measuring the tilt at multiple points for comparison, the process is quite cumbersome. In addition, the tape measure needs to be pulled back and forth during the tilt measurement process, which can easily cause the base plate or support plate to shift, potentially interfering with the measurement. Utility Model Content

[0006] The purpose of this utility model is to provide a foundation pit support inclination measuring instrument for engineering cost estimation, which can effectively solve the problems in the background technology.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] A foundation pit support inclination measuring instrument for engineering cost estimation includes a support platform, a support frame is fixedly installed at the front of the top of the support platform, a sliding frame is slidably installed at the upper part of the inside of the support frame, and a measuring tape is provided on the sliding frame. Electric telescopic rods are installed on both sides and the rear end of the outer ring of the support platform.

[0009] The drive shaft of each electric telescopic rod is fixedly connected to a support rod. The bottom end of the support rod is slidably mounted with a bolt column via a slide rod. The bottom end of the bolt column is equipped with a self-locking universal caster. A placement groove is provided at the center of the top of the support platform. Several counterweights are placed in the placement groove. A bubble level is provided on one side of the support platform. The front end of the sliding frame is connected to a locking nut via a locking threaded rod, and the end of the locking nut near the sliding frame is in contact with the rear end of the support frame.

[0010] Preferably, the lower part of the support rod is provided with an anti-detachment block that is compatible with the slide rod, and the lower part of the inner wall of the support rod is provided with a threaded groove that is compatible with the bolt column.

[0011] Preferably, a buffer spring is provided inside the support rod, and the bottom end of the buffer spring abuts against the top end of the slide rod.

[0012] Preferably, a cushioning pad is provided around the outer ring of the slide bar, and the cushioning pad is located between the upper and lower opposing surfaces of the slide bar and the anti-disengagement bar.

[0013] Preferably, an electrical control box is provided at the lower rear end of the support frame, and the electrical control box is electrically connected to several electric telescopic rods.

[0014] Preferably, fixing pins are provided at both the upper and lower ends of the support platform near the rear end, and the length of the fixing pins is greater than the length of the push rod support rod and the self-locking swivel caster combination of the electric telescopic rod.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model uses an electric telescopic rod, a support rod, self-locking omnidirectional casters, a support platform, and a bubble level to work together. Before measuring with a measuring tape, the principle of determining a plane by three points is followed. The support height at the support rod can be adjusted according to the unevenness of the ground, which facilitates measurement and leveling. At the same time, it does not require tools to fill in the concave parts, thereby improving adjustment efficiency and improving the accuracy of measurement data.

[0017] By setting up counterweights, fixing pins, and support platforms in coordination, the counterweights increase the weight at the bottom, while the fixing pins are inserted into the ground to transfer the center of gravity to the support platform. This improves support stability and reduces the probability of displacement of the support platform or support frame during the measurement process. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a foundation pit support inclination measuring instrument for engineering cost estimation in an embodiment of this utility model;

[0019] Figure 2This is a schematic diagram of the structure of the bubble level, support rod, and electric telescopic rod in the embodiments of this utility model;

[0020] Figure 3 This is a schematic diagram of the bolt column and buffer spring in the embodiment of this utility model.

[0021] In the diagram: 1. Support platform; 2. Support frame; 3. Sliding frame; 4. Measuring tape; 5. Locking nut; 6. Fixing pin; 7. Counterweight; 8. Electric telescopic rod; 9. Support rod; 10. Self-locking swivel casters; 11. Buffer spring; 12. Bolt post; 13. Buffer pad; 14. Bubble level; 15. Electrical control box. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example 1

[0024] Combination Figures 1-3 A foundation pit support slope measuring instrument for engineering cost estimation includes a support platform 1, a support frame 2 fixedly installed at the front of the top of the support platform 1, a sliding frame 3 slidably installed at the upper part of the inside of the support frame 2, and a measuring tape 4 is provided on the sliding frame 3. Electric telescopic rods 8 are installed on both sides and the rear end of the outer ring of the support platform 1.

[0025] See Figure 2 Furthermore, it is found that the drive shaft ends of the electric telescopic rods 8 are all fixedly connected to support rods 9. The bottom end of the support rods 9 is slidably mounted with bolt columns 12 via slide rods. The bottom end of the bolt columns 12 is equipped with self-locking universal casters 10. A placement groove is set at the center of the top of the support platform 1. Several counterweights 7 are set in the placement groove. A bubble level 14 is set on one side of the support platform 1. The front end of the sliding frame 3 is connected to a locking nut 5 via a locking threaded rod. The end of the locking nut 5 near the sliding frame 3 is in contact with the rear end of the support frame 2. An electrical control box 15 is set at the lower rear end of the support frame 2. The electrical control box 15 is electrically connected to several electric telescopic rods 8. Fixed pins 6 are set at both the upper and lower ends of the support platform 1 near the rear end. The length of the fixed pins 6 is greater than the combined length of the push rod support rod 9 and the self-locking universal casters 10 of the electric telescopic rod 8.

[0026] Specifically, according to existing technology, the sliding frame 3 can be released by tightening the locking nut 5. Then, the sliding frame 3 can be pushed to slide on the support frame 2 to adjust the measuring height of the measuring tape 4. After reaching the appropriate position, the locking nut 5 can be tightened again to fix the height. Then, according to existing technology, the inclination of the foundation pit can be calculated using the length measured by the measuring tape 4 and its height. Before measuring with the measuring tape 4, the number of counterweights 7 can be adjusted to lower the center of gravity of the support frame 2 and the support platform 1. Simultaneously, the fixing pin 6 can be inserted into the foundation pit. Within the ground, to reduce the probability of the support frame 2 and support platform 1 being pulled during measurement and improve measurement stability, and because the support platform 1 is supported by three self-locking swivel casters 10, and the three self-locking swivel casters 10 are installed at the end of the push rod of the electric telescopic rod 8, the height of the support can be adjusted by controlling the extension and retraction of the push rod of the electric telescopic rod 8 at different positions according to the principle of determining the plane by three points. At the same time, the support platform 1 can be observed to see if it is in a relatively horizontal state by setting a bubble level 14. By adjusting, it can be avoided that the support platform 1 is too tilted and will affect the measurement of the measuring tape 4.

[0027] Example 2

[0028] See Figure 2 and Figure 3 Furthermore, based on Embodiment 1, the support rod 9 is provided with an anti-detachment block that is compatible with the slide rod at a lower position inside, and the inner wall of the support rod 9 is provided with a threaded groove that is compatible with the bolt column 12 at a lower position. A buffer spring 11 is provided inside the support rod 9, with the bottom end of the buffer spring 11 abutting against the top end of the slide rod. A buffer pad 13 is provided around the outer ring of the slide rod, and the buffer pad 13 is located between the upper and lower opposing surfaces of the slide rod and the anti-detachment rod.

[0029] Specifically, when it is necessary to measure the inclination data at different locations of the same foundation pit, after ensuring that the self-locking swivel caster 10 is released, the support platform 1 can be pushed to rotate and move the self-locking swivel caster 10 to adjust the position of the support platform 1. When a long distance movement is required, since the bolt column 12 is installed in the support rod 9 through the slide rod, the bolt column 12 can be screwed out of the threaded groove below the support rod 9. During subsequent movement, the timely and effective deformation of the buffer spring 11 and the bolt column 12, and the sliding of the slide rod in the support rod 9, can buffer the vibration generated, so as to protect the various components on the support platform 1 and the support frame 2. After moving to a suitable position, the self-locking swivel caster 10 can be screwed back into the support rod 9 to prevent the support platform 1 from shaking during the measurement of the measuring tape 4.

[0030] In actual operation, the sliding frame 3 can be released by tightening the locking nut 5 according to the existing technology. Then the sliding frame 3 can be pushed to slide on the support frame 2 to adjust the measuring height of the measuring tape 4. After reaching the appropriate position, the locking nut 5 can be tightened again to fix the height. Then the inclination of the foundation pit can be calculated by measuring the length of the measuring tape 4 and its height according to the existing technology.

[0031] Furthermore, before measuring with the measuring tape 4, the number of counterweights 7 is adjusted to adjust the center of gravity of the support frame 2 and the support platform 1 to the lower position. At the same time, the fixing pin 6 can be inserted into the pit floor to reduce the probability of the support frame 2 and the support platform 1 being pulled during measurement and improve measurement stability.

[0032] Meanwhile, since the support platform 1 is supported by three self-locking swivel casters 10, and the three self-locking swivel casters 10 are installed at the end of the push rod of the electric telescopic rod 8, the height of the support can be adjusted by controlling the extension and retraction of the push rod of the electric telescopic rod 8 at different positions according to the principle of determining the plane by three points during measurement. At the same time, the support platform 1 can be observed to be in a relatively horizontal state by setting a bubble level 14. By adjusting, the support platform 1 can be prevented from being too tilted, which would affect the measurement of the measuring tape 4.

[0033] When it is necessary to measure the inclination data at different locations of the same foundation pit, after ensuring that the self-locking swivel caster 10 is released, the support platform 1 can be pushed to make the self-locking swivel caster 10 rotate and move, so as to adjust the position of the support platform 1.

[0034] When long-distance movement is required, the bolt post 12 is installed inside the support rod 9 through the slide rod. The bolt post 12 can be unscrewed from the threaded groove below the support rod 9. During subsequent movement, the timely and effective deformation of the buffer spring 11 and the bolt post 12, as well as the sliding of the slide rod inside the support rod 9, can buffer the vibration generated, so as to protect the various components on the support platform 1 and the support frame 2. After moving to a suitable position, the self-locking universal caster 10 can be screwed back into the support rod 9 to prevent the support platform 1 from shaking during the measurement of the measuring tape 4.

[0035] Furthermore, the control components and modules used in the aforementioned electric telescopic pole 8 and electric control box 15 are all existing technologies, which can be fully implemented by those skilled in the art. The power supply is also common knowledge in the field and need not be elaborated upon. The content protected by this utility model does not involve any improvement to the software and methods.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A foundation pit support slope measuring instrument for engineering cost estimation, comprising a support platform (1), wherein a support frame (2) is fixedly installed at the front of the top of the support platform (1), and a sliding frame (3) is slidably installed at the upper part of the interior of the support frame (2), and a measuring tape (4) is provided on the sliding frame (3), characterized in that: Electric telescopic rods (8) are installed on both sides and at the rear end of the outer ring of the support platform (1); The drive shaft of each electric telescopic rod (8) is fixedly connected to a support rod (9). The bottom end of the support rod (9) is slidably mounted with a bolt column (12) via a slide rod. The bottom end of the bolt column (12) is equipped with a self-locking universal caster (10). A placement groove is provided at the center of the top of the support platform (1). Several counterweights (7) are provided in the placement groove. A bubble level (14) is provided on one side of the support platform (1). The front end of the sliding frame (3) is connected to a locking nut (5) via a locking threaded rod. The end of the locking nut (5) near the sliding frame (3) is in contact with the rear end of the support frame (2).

2. The foundation pit support inclination measuring instrument for engineering cost estimation according to claim 1, characterized in that: The support rod (9) has an anti-detachment block that is compatible with the slide rod at the lower part of its interior, and the inner wall of the support rod (9) has a threaded groove that is compatible with the bolt column (12) at the lower part of its interior.

3. The foundation pit support inclination measuring instrument for engineering cost estimation according to claim 2, characterized in that: The support rod (9) is equipped with a buffer spring (11) inside, and the bottom end of the buffer spring (11) abuts against the top end of the slide rod.

4. The foundation pit support inclination measuring instrument for engineering cost estimation according to claim 2, characterized in that: A buffer pad (13) is provided around the outer ring of the slide bar, and the buffer pad (13) is located between the upper and lower opposing surfaces of the slide bar and the anti-disengagement bar.

5. The foundation pit support inclination measuring instrument for engineering cost estimation according to claim 1, characterized in that: An electrical control box (15) is provided at the lower rear end of the support frame (2), and the electrical control box (15) is electrically connected to several electric telescopic rods (8).

6. The foundation pit support inclination measuring instrument for engineering cost estimation according to claim 1, characterized in that: Fixed pins (6) are provided at both the upper and lower ends of the support platform (1) near the rear end. The length of the fixed pins (6) is greater than the combined length of the push rod support rod (9) and the self-locking universal caster (10) of the electric telescopic rod (8).

Images