Foundation pit supporting device with alarm function

Abstract

The invention discloses a foundation pit supporting device with an alarm function, relates to the technical field of foundation pit supporting, and aims to solve the problems that the pressure monitoring range of an existing supporting device is small, the supporting angle cannot be adjusted, and inclined foundation pit supporting cannot be completed while pressure changes are monitored. Comprising a fixing plate, a reflective alarm device, a supporting plate, a supporting rod, a grooved rail, a hinge hole and a pin. A groove rail is fixed to the fixing plate, a plurality of hinge holes are formed in the groove rail, pins penetrate through the hinge holes and the supporting rod to enable the groove rail to be hinged to the supporting rod, a light-reflecting alarm device is hinged to the fixing plate, the supporting plate is fixed to the light-reflecting alarm device, the light-reflecting alarm device is hinged to the supporting rod, and the light-reflecting alarm device is used for monitoring pressure between the supporting plate and the supporting rod. The reflective alarm device comprises a supporting shell, a supporting seat, a sliding rail, a sliding block I, a spring, an observation hole and a reflective coating; the lower end of the supporting shell is hinged to the fixing plate, and the supporting plate is fixed to the supporting shell.

Description

Technical Field

[0001] The present invention relates to the technical field of foundation pit support, and particularly relates to a foundation pit support device with an alarm function. Background Technique

[0002] Foundation pit support refers to a series of temporary or permanent support measures taken in construction projects to ensure the safety and stability during the excavation of foundation pits, prevent soil collapse, landslides or groundwater infiltration. Its purpose is to protect the surrounding environment, buildings and construction personnel of the foundation pit and ensure the smooth progress of construction. The existing support methods usually use steel plates plus inclined supports to abut against the side wall of the foundation pit to form reinforcement for the side wall of the foundation pit and prevent landslides and collapses of the side wall of the foundation pit. Some of the existing foundation pit support structures have a pressure alarm function. The invention patent with the publication number CN221072655U discloses a new type of assembled deep foundation pit support structure. When the foundation pit support pile is skewed, it will drive the screw to move. When the inclination angle is large, it will trigger the alarm mechanism arranged between the screw and the connecting plate to realize the alarm function.

[0003] However, the above-mentioned support device has a small monitoring range of pressure. It cannot accurately monitor the change of support pressure for foundation pits with a small support depth, and it cannot monitor the change of support pressure while ensuring the support strength for foundation pits with a large support depth. Moreover, the above-mentioned support device cannot adjust the support angle and cannot realize the function of supporting inclined foundation pits while monitoring the pressure change. Summary of the Invention

[0004] In order to solve the problems that the existing support device has a small monitoring range of pressure, cannot adjust the support angle, and cannot complete the support of inclined foundation pits while monitoring the pressure change, the present invention further provides a foundation pit support device with an alarm function to solve the problems raised in the above background technique.

[0005] The technical solution of the present invention is as follows:

[0006] A foundation pit support device with an alarm function includes a fixing plate, a reflective alarm device, a support plate, a support rod, a groove rail, a hinge hole and a pin;

[0007] A groove rail is fixed on the fixing plate, and a plurality of hinge holes are opened on the groove rail. The pin passes through the hinge hole and the support rod to hinge the groove rail and the support rod. A reflective alarm device is hinged on the fixing plate, the support plate is fixed on the reflective alarm device, and the reflective alarm device is hinged with the support rod. The reflective alarm device is used to monitor the pressure between the support plate and the support rod;

[0008] Further, the reflective alarm device includes a support shell, a support seat, a slide rail, a slider I, a spring, an observation hole and a reflective coating;

[0009] The lower end of the support shell is hinged to the fixed plate, the support plate is fixed to the support shell, two support seats are fixed inside the support shell, a slide rail is arranged between the two support seats, a slider I slides on the slide rail, the slider I is hinged to a support rod passing through the support shell, a spring is installed on the slide rail, the spring makes the slider I have a tendency to move downward, reflective coatings are arranged on both sides of the slider I, and observation holes are formed on both sides of the support shell.

[0010] Furthermore, the reflective alarm device includes a support shell, support seats, a slide rail, a slider I, a slider II, a lead screw, a spring, observation holes and reflective coatings;

[0011] The lower end of the support shell is hinged to the fixed plate, the support plate is fixed to the support shell, two support seats are fixed inside the support shell, a slide rail is arranged between the two support seats, the slide rail is respectively connected with a slider II and a slider I in a sliding manner from top to bottom, the slider I is hinged to a support rod passing through the support shell, a lead screw is rotatably connected to the two support seats, the lead screw drives the slider II to move up and down along the slide rail through rotation, the lead screw passes through the slider I, a spring is installed between the slider I and the slider II, the spring makes the slider I have a tendency to move away from the slider II, reflective coatings are arranged on both sides of the slider I, and observation holes are formed on both sides of the support shell.

[0012] Furthermore, the reflective coating is a microprism reflective film.

[0013] Furthermore, the top end of the lead screw passes through the support shell, and an internal hexagonal hole is arranged at the top end of the lead screw.

[0014] Furthermore, the lead screw is driven by a stepper motor.

[0015] Furthermore, a distance sensor for measuring the position of the slider I is installed on the support seat at the lower end, and the distance sensor is electrically connected to the alarm system.

[0016] Furthermore, the alarm system is a warning light.

[0017] Furthermore, anti-corrosion coatings are applied to the contact surfaces of the fixed plate and the support plate with the soil.

[0018] Furthermore, a plurality of anchoring cones are arranged at the lower end of the fixed plate.

[0019] The present invention has the following beneficial effects compared with the prior art:

[0020] 1. A foundation pit support device with an alarm function is provided with a reflective alarm device. When the support plate is subjected to soil pressure, the support plate is inclined and stressed. The support rod pushes the slider I upward and compresses the spring. The elastic force of the spring resists the inclination of the support plate. When the soil pressure on the support plate reaches the warning value, the support plate inclines, the support rod pushes the slider I upward, and the spring is compressed. The reflective coatings provided on both sides of the slider I are exposed from the observation holes. The reflective coating is a microprismatic reflective film with a prominent reflective effect, realizing the alarm function when the support pressure is too high.

[0021] 2. On the basis of the first embodiment, the reflective alarm device of the present invention is provided with a double-slider mechanism. A spring is arranged between the slider I and the slider II. The distance between the slider II and the slider I is adjusted by a lead screw. By changing the compression length of the spring, the elastic force of the spring acting on the slider II is adjusted, realizing the adjustment of the monitoring range of the support pressure. Pressure monitoring can be achieved for foundation pits with different support pressures, and the applicable range is wider.

[0022] 3. The support plate forms a triangular support through the support rod and the groove rail. A plurality of hinge holes are opened on the groove rail, and the support rod can be hinged in different hinge holes. By changing the hinge position of the support rod and the groove rail, the support angle formed by the support plate is adjusted, enabling the support plate of the present invention to complete the support angle of 65 - 115° with the horizontal plane. While monitoring the pressure change, multi-angle inclined foundation pit support is completed.

[0023] 4. A distance sensor is provided. The distance sensor is used to monitor the displacement of the slider I sliding upward. When the soil pressure on the support plate reaches the warning value, causing the support plate to incline, the support rod pushes the slider I upward, and the distance sensor transmits the signal to the warning light, realizing the light alarm function. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 is the overall structural schematic diagram of the present invention;

[0025] Figure 2 is the structural schematic of the first embodiment of the reflective alarm device of the present invention Figure Ⅰ ;

[0026] Figure 3 is the structural schematic of the first embodiment of the reflective alarm device of the present invention Figure Ⅱ ;

[0027] Figure 4 is the exploded view of the first embodiment of the reflective alarm device of the present invention;

[0028] Figure 5 is the structural schematic diagram of the spring sliding mechanism of the first embodiment of the reflective alarm device;

[0029] Figure 6Structural schematic diagram of the second embodiment of the reflective alarm device of the present invention Figure Ⅰ ;

[0030] Figure 7 Structural schematic diagram of the second embodiment of the reflective alarm device of the present invention Figure Ⅱ ;

[0031] Figure 8 Exploded view of the second embodiment of the reflective alarm device of the present invention;

[0032] Figure 9 Structural schematic diagram of the spring sliding mechanism of the second embodiment of the reflective alarm device;

[0033] Figure 10 Structural schematic diagram of the anchor cone.

[0034] In the figure: 1, fixed plate; 2, reflective alarm device; 3, support plate; 4, support rod; 5, groove rail; 6, hinge hole; 7, pin; 201, support shell; 202, support seat; 203, slide rail; 204, slider I; 205, spring; 206, observation hole; 207, reflective coating; 201, support shell; 202, support seat; 203, slide rail; 204, slider I; 208, slider II; 209, lead screw; 205, spring; 206, observation hole; 207, reflective coating; 210, hexagon socket hole; 211, distance sensor; 212, warning light; 8, anti-corrosion coating; 9, anchor cone. Detailed implementation manners

[0035] Detailed implementation manner 1: Refer to Figure 1-2 As shown, a foundation pit support device with an alarm function. This implementation manner includes a fixed plate 1, a reflective alarm device 2, a support plate 3, a support rod 4, a groove rail 5, a hinge hole 6 and a pin 7;

[0036] The groove rail 5 is fixed on the fixed plate 1. A plurality of hinge holes 6 are opened on the groove rail 5. The pin 7 passes through the hinge hole 6 and the support rod 4 to hinge the groove rail 5 and the support rod 4. The reflective alarm device 2 is hinged on the fixed plate 1. The support plate 3 is fixed on the reflective alarm device 2. The reflective alarm device 2 is hinged with the support rod 4. The reflective alarm device 2 is used to monitor the pressure between the support plate 3 and the support rod 4.

[0037] Further, the present invention takes two groups of reflective warning devices 2 as an example. The fixing plate 1 is in contact with the foundation pit ground and plays a role in bearing gravity. The groove rail 5 is fixed on the fixing plate 1 by bolts or welding. There are two rows of parallel bosses on the groove rail 5, and a plurality of hinge holes 6 are equidistantly arranged on the bosses. Through holes are also provided at the lower ends of the support rods 4. A pin 7 is used to pass through the hinge holes 6 and the through holes at the lower ends of the support rods 4 to complete the hinge connection between the groove rail 5 and the support rods 4. The reflective warning device 2 plays a role in connecting the support plate 3 and the support rods 4. A rotating shaft is provided at the lower end of the reflective warning device 2, and a hinge projection is provided on the upper end surface of the support plate 3. The rotating shaft at the lower end of the reflective warning device 2 is rotatably connected in the hinge projection on the upper end surface of the support plate 3, enabling the reflective warning device 2 to rotate relative to the fixing plate 1 around the hinge. The support plate 3 is a plate-like structure for supporting the foundation pit soil slope. The reflective warning device 2 is fixedly connected to the support plate 3 by bolts.

[0038] Working principle and effect: The support plate 3 forms a triangular support through the support rods 4 and the groove rail 5. When the support rods 4 are hinged at different hinge holes 6, by changing the hinge position of the support rods 4 and the groove rail 5, the support angle formed by the support plate 3 is adjusted, enabling the support plate 3 of the present invention to complete a support angle of 65 - 115° with the horizontal plane.

[0039] Specific embodiment two: Refer to Figure 2-5 As shown, the reflective warning device 2 of this embodiment includes a support shell 201, a support seat 202, a slide rail 203, a slider I 204, a spring 205, an observation hole 206, and a reflective coating 207;

[0040] The lower end of the support shell 201 is hinged to the fixing plate 1, the support plate 3 is fixed to the support shell 201, two support seats 202 are fixed inside the support shell 201, a slide rail 203 is arranged between the two support seats 202, a slider I 204 slides on the slide rail 203, the slider I 204 is hinged to the support rod 4 passing through the support shell 201, a spring 205 is installed on the slide rail 203, the spring 205 makes the slider I 204 have a tendency to move downward, reflective coatings 207 are arranged on both sides of the slider I 204, and observation holes 206 are provided on both sides of the support shell 201.

[0041] Further, this embodiment is the first embodiment of the reflective alarm device 2. The support plate 3 is fixedly connected to the support shell 201 by bolts. Two support seats 202 are fixedly installed in the support shell 201 by bolts. The slide rail 203 is composed of three cylindrical slide rails and is fixedly installed between the two support seats 202 by bolts. The spring 205 is sleeved on the central slide rail 203. The two ends of the spring 205 respectively abut between the upper support seat 202 and the slider I 204, and apply a downward thrust to the slider I 204. In the initial state, the spring 205 is in a contracted state, and the slider I 204 is abutted against the upper end face of the lower support seat 202. The observation hole 206 is opened at the upper end of the slider I 204 in the initial state, that is, when the slider I 204 does not slide upward, the reflective coating 207 on the slider I 204 cannot be observed through the observation hole 206. When the slider I 204 slides upward, the reflective coating 207 on the slider I 204 gradually exposes from the observation hole 206.

[0042] Working principle and effect: When the support plate 3 reaches the warning value under the soil pressure, the support plate 3 tilts, the support rod 4 pushes the slider I 204 to move upward, and the spring 205 is compressed by the force. The reflective coatings 207 provided on both sides of the slider I 204 expose from the observation hole 206. The reflective coating 207 is a microprism reflective film with a prominent reflective effect, realizing the alarm function when the support pressure is too high. The brightness of the observation hole 206 is determined by the area of the reflective coating 207 on the slider I 204 that exposes from the observation hole 206. The brighter the observation hole 206, the greater the inclination degree of the support plate 3. Thus, the support strength of the foundation pit can be inspected remotely or at night.

[0043] Specific Embodiment 3: Refer to Figure 6-9 As shown in the figure, the reflective alarm device 2 of this embodiment includes a support shell 201, support seats 202, slide rails 203, slider I 204, slider II 208, lead screw 209, spring 205, observation hole 206 and reflective coating 207;

[0044] The lower end of the support shell 201 is hinged to the fixed plate 1, the support plate 3 is fixed on the support shell 201, two support seats 202 are fixed in the support shell 201, a slide rail 203 is arranged between the two support seats 202, the slider II 208 and the slider I 204 are respectively slidably connected to the slide rail 203 from top to bottom, the slider I 204 is hinged to the support rod 4 passing through the support shell 201, a lead screw 209 is rotatably connected to the two support seats 202, the lead screw 209 drives the slider II 208 to move up and down along the slide rail 203 through rotation, the lead screw 209 passes through the slider I 204, a spring is installed between the slider I 204 and the slider II 208, the spring 205 makes the slider I 204 tend to move away from the slider II 208, reflective coatings 207 are arranged on both sides of the slider I 204, and observation holes 206 are opened on both sides of the support shell 201.

[0045] Further, this embodiment is the second embodiment of the reflective alarm device 2, and the function of adjusting the compression length of the spring 205 is added on the basis of the first embodiment. The lead screw 209 is rotatably connected to the support base 202 through a bearing. A threaded hole is provided at the center of the slider II 208, and the lead screw 209 meshes with the threaded hole at the center of the slider II 208. Since the lead screw-slider transmission has a self-locking function, after the lead screw 209 stops rotating, the position of the slider II 208 is fixed on the slide rail 203. A through hole is provided at the center of the slider I 204, and the lead screw 209 passes through the through hole at the center of the slider I 204. The spring 205 is sleeved on the lead screw 209, and both ends of the spring 205 abut against the lower end surface of the slider II 208 and the upper end surface of the slider I 204 respectively. Rotating the lead screw 209 can adjust the distance between the slider II 208 and the slider I 204, thereby compressing or releasing the spring 205, and further adjusting the pressure of the spring 205 on the slider I 204.

[0046] Working principle and effect: By rotating the lead screw 209 to drive the slider II 208 to move downward, the distance between the slider II 208 and the slider I 204 is reduced, thereby compressing the spring 205. The pressure exerted by the spring 205 on the slider I 204 increases, and the critical pressure for tilting the support plate 3 increases, realizing the monitoring of the foundation pit support pressure with a larger support force. Vice versa, the monitoring range of the support pressure is adjusted. Pressure monitoring can be achieved for foundation pits with different support pressures, and the applicable range is wider.

[0047] Specific embodiment four: Refer to Figure 4-5 As shown in FIGS. 8-9, the reflective coating 207 of this embodiment is a microprism reflective film.

[0048] Specific embodiment five: Refer to Figure 6-9 As shown in the figure, the top end of the lead screw 209 of this embodiment passes through the support shell 201, and an internal hexagonal hole 210 is provided at the top end of the lead screw 209.

[0049] Specific embodiment six: Refer to Figure 9 As shown in the figure, the lead screw 209 of this embodiment is driven by a stepping motor.

[0050] Further, the top end of the lead screw 209 passes through the support shell 201 and an internal hexagonal hole 210 is provided, which is convenient for rotating the lead screw 209 outside the support shell 201. As an alternative embodiment, the lead screw 209 is driven by a stepping motor. The stepping motor is fixed on the support base 202, and the output shaft of the stepping motor is fixedly connected to the lead screw 209.

[0051] Specific embodiment seven: Refer to Figure 9As shown in the figure, a distance sensor 211 for measuring the position of the slider I 204 is installed on the support base 202 at the lower end of this embodiment. The distance sensor 211 is electrically connected to the alarm system.

[0052] Specific Embodiment Eight: Refer to Figure 6 As shown in the figure, the alarm system of this embodiment is a warning light 212.

[0053] Furthermore, the distance sensor 211 is used to monitor the upward sliding displacement of the slider I 204. When the retaining plate 3 is subjected to soil pressure reaching the warning value, causing the retaining plate 3 to tilt, the support rod 4 pushes the slider I 204 upward. The distance sensor 211 monitors the displacement of the slider I 204, and the distance sensor 211 transmits the signal to the alarm system to achieve the alarm function. The alarm system is a warning light 212. As an alternative embodiment, the alarm system is a remote alarm system based on a WIFI module.

[0054] Specific Embodiment Nine: Refer to Figure 10 As shown in the figure, anti-corrosion coatings 8 are applied to the contact surfaces of the fixing plate 1 and the retaining plate 3 with the soil.

[0055] Specific Embodiment Ten: Refer to Figure 10 As shown in the figure, a plurality of anchoring cones 9 are provided at the lower end of the fixing plate 1 of this embodiment.

[0056] Furthermore, the anti-corrosion coating 8 is a chlorosulfonated polyethylene coating layer, which plays a role in preventing oxidation. The anchoring cones 9 are used for anchoring with the soil to provide a supporting force perpendicular to the direction of the retaining plate 3.

[0057] During use, install this foundation pit retaining device at the slope. Drive the pin 7 into the soil to complete the fixation of the fixing plate 1. Erect the retaining plate 3, and after making the retaining plate 3 closely adhere to the slope, use the pin 7 to hinge the support rod 4 with the groove rail 5. Rotate the screw rod 209 according to the retaining strength to complete the retaining installation work.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some 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 various embodiments of the present invention.

Claims

1. A foundation pit support device with an alarm function, characterized in that: It comprises a fixing plate (1), a reflective alarm device (2), a supporting plate (3), a supporting rod (4), a groove rail (5), a hinge hole (6) and a pin (7); A groove rail (5) is fixed on the fixing plate (1), a plurality of hinge holes (6) are formed on the groove rail (5), a pin (7) passes through the hinge holes (6) and the support rod (4) so ​​that the groove rail (5) is hinged to the support rod (4), a reflective alarm device (2) is hinged to the fixing plate (1), a support plate (3) is fixed on the reflective alarm device (2), the reflective alarm device (2) is hinged to the support rod (4), and the reflective alarm device (2) is used to monitor the pressure between the support plate (3) and the support rod (4).

2. The foundation pit supporting device with alarm function according to claim 1 is characterized in that: The reflective alarm device (2) comprises a support shell (201), a support seat (202), a slide rail (203), a slide block I (204), a spring (205), an observation hole (206) and a reflective coating (207); The lower end of the support shell (201) is hinged on the fixed plate (1), the support plate (3) is fixed on the support shell (201), two support seats (202) are fixed in the support shell (201), a slide rail (203) is arranged between the two support seats (202), a slider I (204) slides on the slide rail (203), the slider I (204) is hinged to the support rod (4) passing through the support shell (201), a spring (205) is installed on the slide rail (203), the spring (205) makes the slider I (204) have a tendency to move downward, both sides of the slider I (204) are provided with reflective coatings (207), and both sides of the support shell (201) are provided with observation holes (206).

3. The foundation pit supporting device with alarm function according to claim 1 is characterized in that: The reflective alarm device (2) comprises a support shell (201), a support seat (202), a slide rail (203), a slider I (204), a slider II (208), a screw rod (209), a spring (205), an observation hole (206) and a reflective coating (207); The lower end of the support shell (201) is hinged on the fixed plate (1), the support plate (3) is fixed on the support shell (201), two support seats (202) are fixed in the support shell (201), a slide rail (203) is arranged between the two support seats (202), the slide rail (203) is slidably connected with a slider II (208) and a slider I (204) from top to bottom, the slider I (204) is hinged with a support rod (4) passing through the support shell (201), and the two support seats (202) are rotatably connected with a wire The rod (209) drives the slider II (208) to move up and down along the slide rail (203) by rotating. The screw rod (209) passes through the slider I (204). A spring is installed between the slider I (204) and the slider II (208). The spring (205) makes the slider I (204) tend to move away from the slider II (208). Both sides of the slider I (204) are provided with a reflective coating (207). Both sides of the support shell (201) are provided with an observation hole (206).

4. The foundation pit supporting device with alarm function according to claim 2 or 3, characterized in that: The reflective coating (207) is a micro-prismatic reflective film.

5. The foundation pit supporting device with alarm function according to claim 3 is characterized in that: The top end of the screw rod (209) passes through the support shell (201), and the top end of the screw rod (209) is provided with an inner hexagonal hole (210).

6. The foundation pit supporting device with alarm function according to claim 3 is characterized in that: The screw rod (209) is driven by a stepping motor.

7. The foundation pit supporting device with alarm function according to claim 3 is characterized in that: A distance sensor (211) for measuring the position of the slider I (204) is installed on the support seat (202) at the lower end, and the distance sensor (211) is electrically connected to the alarm system.

8. The foundation pit supporting device with alarm function according to claim 7 is characterized in that: The alarm system is a warning light (212).

9. The foundation pit supporting device with alarm function according to claim 1 is characterized in that: The contact surfaces of the fixing plate (1) and the supporting plate (3) with the soil are coated with an anti-corrosion coating (8).

10. The foundation pit supporting device with alarm function according to claim 1, characterized in that: A plurality of anchor cones (9) are provided at the lower end of the fixing plate (1).

Images