A foundation pit support device with alarm function

Abstract

A foundation pit support device with alarm function relates to the field of foundation pit support technology. This invention addresses the problems of existing support devices having a small pressure monitoring range, inability to adjust the support angle, and inability to simultaneously monitor pressure changes and support inclined foundation pits. The device includes a fixed plate, a reflective alarm device, a support plate, a support rod, a channel rail, hinge holes, and pins. A channel rail is fixed to the fixed plate, and multiple hinge holes are formed on the channel rail. Pins pass through the hinge holes and the support rod, hinged to the channel rail and the support rod. A reflective alarm device is hinged to the fixed plate, and the support plate is fixed to the reflective alarm device. The reflective alarm device is hinged to the support rod and is used to monitor the pressure between the support plate and the support rod. The reflective alarm device includes a support shell, a support base, a slide rail, a slider I, a spring, an observation hole, and a reflective coating. The lower end of the support shell is hinged to the fixed plate, and the support plate is fixed to the support shell. This invention is used for foundation pit support.

Description

Technical Field

[0001] This invention relates to the field of foundation pit support technology, and in particular to a foundation pit support device with an alarm function. Background Technology

[0002] Foundation pit support refers to a series of temporary or permanent support measures taken in construction engineering to ensure the safety and stability of foundation pit excavation and prevent soil collapse, landslides, or groundwater infiltration. Its purpose is to protect the safety of the surrounding environment, buildings, and construction personnel, and to ensure smooth construction. Existing support methods typically use steel plates with inclined supports against the foundation pit sidewalls to reinforce them and prevent landslides and collapses. Some existing foundation pit support structures have pressure alarm functions. Patent CN221072655U discloses a new type of prefabricated deep foundation pit support structure. When the foundation pit support piles deviate, they drive the screw rods to move. When the tilt angle is large, it triggers an alarm mechanism between the screw rods and the connecting plate, thus realizing the alarm function.

[0003] However, the aforementioned support devices have a limited pressure monitoring range. For foundation pits with shallow support depths, they cannot accurately monitor changes in support pressure, and for foundation pits with greater support depths, they cannot monitor pressure changes while ensuring support strength. Furthermore, these support devices cannot adjust the support angle, thus failing to simultaneously monitor pressure changes and provide support for inclined foundation pits. Summary of the Invention

[0004] In order to solve the problems of existing support devices having a small pressure monitoring range and being unable to adjust the support angle, thus failing to monitor pressure changes while simultaneously supporting inclined foundation pits, this invention provides a foundation pit support device with an alarm function to solve the problems mentioned in the background art.

[0005] The technical solution of this invention is:

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

[0007] A grooved rail is fixed on the fixed plate. Multiple hinge holes are opened on the grooved rail. A pin passes through the hinge holes and the support rod to make the grooved rail hinged to the support rod. A reflective alarm device is hinged on the fixed plate. The support plate is fixed on the reflective alarm device. The reflective alarm device is hinged to the support rod. The reflective alarm device is used to monitor the pressure between the support plate and the support rod.

[0008] Furthermore, the reflective alarm device includes a support shell, a support base, 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, and the support plate is fixed to the support shell. Two support seats are fixed inside the support shell, and a slide rail is provided between the two support seats. A slider I slides on the slide rail. The slider I is hinged to the support rod passing through the support shell. A spring is installed on the slide rail, and the spring causes the slider I to have a downward tendency. Reflective coatings are provided on both sides of the slider I. Observation holes are opened on both sides of the support shell.

[0010] Furthermore, the reflective alarm device includes a support shell, a support base, a slide rail, slider I, slider II, a lead screw, a spring, an observation hole, and a reflective coating;

[0011] The lower end of the support shell is hinged to the fixed plate, and the support plate is fixed to the support shell. Two support seats are fixed inside the support shell, and a slide rail is provided between the two support seats. The slide rail is slidably connected to slider II and slider I from top to bottom. Slider I is hinged to the support rod passing through the support shell. A lead screw is rotatably connected to the two support seats. The lead screw drives slider II to move up and down along the slide rail by rotation. The lead screw passes through slider I. A spring is installed between slider I and slider II. The spring makes slider I tend to move away from slider II. Reflective coating is provided on both sides of slider I. Observation holes are opened 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 the top end of the lead screw is provided with an internal hexagonal hole.

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

[0015] Furthermore, a distance sensor for measuring the position of slider I is installed on the support base 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, the contact surfaces of the fixing plate and the support plate with the soil are coated with an anti-corrosion coating.

[0018] Furthermore, the lower end of the fixing plate is provided with multiple anchoring cones.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. A foundation pit support device with an alarm function, equipped with a reflective alarm device. When the support plate is subjected to soil pressure, the support plate tilts under stress. The support rod pushes slider I upward and compresses the spring, which resists the tilting of the support plate through its elastic force. When the soil pressure on the support plate reaches a warning value, the support plate tilts, the support rod pushes slider I upward, and the spring is compressed. The reflective coating on both sides of slider I is exposed through the observation hole. The reflective coating is a microprism reflective film with a conspicuous reflective effect, realizing the alarm function when the support pressure is too high.

[0021] 2. Based on the first embodiment, the reflective alarm device of the present invention is equipped with a dual-slider mechanism. A spring is installed between slider I and slider II. The distance between slider II and slider I is adjusted by a lead screw. By changing the compression length of the spring, the elastic force exerted on slider II by the spring is adjusted, thereby adjusting the monitoring range of the support pressure. Pressure monitoring can be achieved for foundation pits with different support pressures, thus broadening its applicability.

[0022] 3. The support plate forms a triangular support through support rods and channel rails. Multiple hinge holes are provided on the channel rails, and the support rods can be hinged into different hinge holes. By changing the hinge positions of the support rods and channel rails, the support angle formed by the support plate can be adjusted, allowing the support plate to achieve a support angle of 65-115° with the horizontal plane. This enables simultaneous monitoring of pressure changes and support for multi-angle inclined foundation pits.

[0023] 4. A distance sensor is installed to monitor the upward displacement of slider I. When the soil pressure on the support plate reaches the warning value, causing the support plate to tilt, the support rod pushes slider I upward, and the distance sensor transmits a signal to the warning light, realizing the light alarm function. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0025] Figure 2 This is a schematic diagram of the structure of the first embodiment of the reflective alarm device of the present invention. Figure I ;

[0026] Figure 3 This is a schematic diagram of the structure of the first embodiment of the reflective alarm device of the present invention. Figure II ;

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

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

[0029] Figure 6This is a schematic diagram of the structure of the second embodiment of the reflective alarm device of the present invention. Figure I ;

[0030] Figure 7 This is a schematic diagram of the structure of the second embodiment of the reflective alarm device of the present invention. Figure II ;

[0031] Figure 8 This is an exploded view of the second embodiment of the reflective alarm device of the present invention;

[0032] Figure 9 This is a schematic diagram of the spring sliding mechanism in the second embodiment of the reflective alarm device;

[0033] Figure 10 This is a schematic diagram of the anchoring cone.

[0034] In the diagram: 1. Fixed plate; 2. Reflective alarm device; 3. Support plate; 4. Support rod; 5. Channel rail; 6. Hinge hole; 7. Pin; 201. Support shell; 202. Support base; 203. Slide rail; 204. Slider I; 205. Spring; 206. Observation hole; 207. Reflective coating; 201. Support shell; 202. Support base; 203. Slide rail; 204. Slider I; 208. Slider II; 209. Lead screw; 205. Spring; 206. Observation hole; 207. Reflective coating; 210. Internal hexagonal hole; 211. Distance sensor; 212. Warning light; 8. Anti-corrosion coating; 9. Anchor cone. Detailed Implementation

[0035] Specific implementation method one: See Figure 1-2 As shown, a foundation pit support device with alarm function is provided in this embodiment, which includes a fixing plate 1, a reflective alarm device 2, a support plate 3, a support rod 4, a channel rail 5, a hinge hole 6, and a pin 7.

[0036] A grooved rail 5 is fixed on the fixed plate 1. Multiple hinge holes 6 are opened on the grooved rail 5. A pin 7 passes through the hinge holes 6 and the support rod 4 to make the grooved rail 5 hinged to the support rod 4. A 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 to 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] Furthermore, this invention takes two sets of reflective alarm devices 2 as an example. The fixed plate 1 contacts the foundation pit ground, serving to bear the weight. The channel rail 5 is fixed to the fixed plate 1 by bolts or welding. Two rows of parallel bosses are provided on the channel rail 5, and multiple hinge holes 6 are equidistantly opened on the bosses. A through hole is also opened at the lower end of the support rod 4. A pin 7 is used to pass through the hinge holes 6 and the through hole at the lower end of the support rod 4 to complete the hinge connection between the channel rail 5 and the support rod 4. The reflective alarm device 2 serves to connect the support plate 3 and the support rod 4. A rotating shaft is provided at the lower end of the reflective alarm device 2, and a hinge protrusion is provided on the upper surface of the support plate 3. The rotating shaft at the lower end of the reflective alarm device 2 is rotatably connected to the hinge protrusion on the upper surface of the support plate 3, allowing the reflective alarm device 2 to rotate relative to the fixed plate 1 around the hinge point. The support plate 3 is a plate-like structure supporting the foundation pit slope, and the reflective alarm 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 rod 4 and the channel rail 5. When the support rod 4 is hinged in different hinge holes 6, the support angle formed by the support plate 3 can be adjusted by changing the hinge position of the support rod 4 and the channel rail 5, so that the support plate 3 of the present invention can complete the support angle of 65-115° with the horizontal plane.

[0039] Specific Implementation Method Two: See Figure 2-5 As shown, the reflective alarm device 2 of this embodiment includes a support shell 201, a support base 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 fixed plate 1, and 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 provided 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 that passes through the support shell 201. A spring 205 is installed on the slide rail 203. The spring 205 causes the slider I 204 to have a downward tendency. Reflective coating 207 is provided on both sides of the slider I 204. Observation holes 206 are opened on both sides of the support shell 201.

[0041] Furthermore, 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 fixed inside the support shell 201 by bolts. The slide rail 203 consists of three cylindrical slide rails and is fixed between the two support seats 202 by bolts. The spring 205 is sleeved on the slide rail 203 located in the center. The two ends of the spring 205 respectively abut against the support seat 202 located at the upper end and the slider I 204, and apply a downward pushing force to the slider I 204. In the initial state, the spring 205 is in the contracted state, pressing the slider I 204 against the upper end surface of the support seat 202 located at the lower end. 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 is not sliding 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 emerges from the observation hole 206.

[0042] Working principle and effect: When the support plate 3 reaches the warning value under soil pressure, it tilts. The support rod 4 pushes the slider I 204 upward, compressing the spring 205. The reflective coating 207 on both sides of the slider I 204 is exposed through the observation hole 206. The reflective coating 207 is a microprism reflective film with a striking 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 exposed through the observation hole 206. The brighter the observation hole 206, the greater the tilt of the support plate 3. This allows for remote or nighttime inspection of the support strength of the foundation pit.

[0043] Specific implementation method three: See Figure 6-9 As shown, the reflective alarm device 2 of this embodiment includes a support shell 201, a support base 202, a slide rail 203, a slider I 204, a slider II 208, a lead screw 209, a spring 205, an observation hole 206, and a reflective coating 207.

[0044] The lower end of the support shell 201 is hinged to the fixed plate 1, and 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 provided between the two support seats 202. The slide rail 203 is slidably connected from top to bottom to slider II 208 and slider I 204. Slider I 204 is hinged to the support rod 4 that passes through the support shell 201. A lead screw 209 is rotatably connected to the two support seats 202. The lead screw 209 drives slider II 208 to move up and down along the slide rail 203 by rotation. The lead screw 209 passes through slider I 204. A spring is installed between slider I 204 and slider II 208. The spring 205 makes slider I 204 tend to move away from slider II 208. Reflective coating 207 is provided on both sides of slider I 204. Observation holes 206 are opened on both sides of the support shell 201.

[0045] Furthermore, this embodiment is a second embodiment of the reflective alarm device 2, which adds an adjustment function for the compression length of the spring 205 based on the first embodiment. The lead screw 209 is rotatably connected to the support base 202 via a bearing. A threaded hole is provided at the center of the slider II 208, and the lead screw 209 engages with the threaded hole at the center of the slider II 208. Because 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, with its two ends abutting against the lower end face of the slider II 208 and the upper end face 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 thus adjusting the pressure of the spring 205 on the slider I 204.

[0046] The working principle and effect are as follows: Rotating the lead screw 209 causes slider II 208 to move downwards, reducing the distance between slider II 208 and slider I 204. This compresses spring 205, increasing the pressure exerted by spring 205 on slider I 204, thus increasing the critical pressure required for the support plate 3 to tilt. This allows for monitoring of the support pressure in foundation pits with high support forces. Conversely, the monitoring range can be adjusted by controlling the pressure at lower levels. Pressure monitoring can be achieved for foundation pits with varying support pressures, making it applicable to a wider range of situations.

[0047] Detailed Implementation Method Four: See [link] Figure 4-5 As shown in Figures 8 and 9, the reflective coating 207 of this embodiment is a microprism reflective film.

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

[0049] Specific implementation method six: See Figure 9 As shown, the lead screw 209 in this embodiment is driven by a stepper motor.

[0050] Furthermore, a hexagonal hole 210 is provided at the top of the lead screw 209, passing through the support housing 201, to facilitate rotation of the lead screw 209 outside the support housing 201. As an alternative implementation, the lead screw 209 is driven by a stepper motor. The stepper motor is fixed to the support base 202, and its output shaft is fixedly connected to the lead screw 209.

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

[0052] Detailed Implementation Method Eight: See also Figure 6 As shown, the alarm system in this embodiment is a warning light 212.

[0053] Furthermore, distance sensor 211 is used to monitor the upward displacement of slider I 204. When the soil pressure on the support plate 3 reaches the warning value, causing the support plate 3 to tilt, the support rod 4 pushes slider I 204 upward. Distance sensor 211 detects the displacement of slider I 204 and transmits the signal to the alarm system to realize 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] Detailed implementation method nine: See Figure 10 As shown, the contact surfaces of the fixing plate 1 and the support plate 3 with the soil in this embodiment are coated with an anti-corrosion coating 8.

[0055] Detailed Implementation Method Ten: See [link] Figure 10 As shown, the lower end of the fixing plate 1 in this embodiment is provided with a plurality of anchoring cones 9.

[0056] Furthermore, the anti-corrosion coating 8 is a chlorosulfonated polyethylene coating layer, which serves to prevent oxidation. The anchoring cone 9 is used to anchor to the soil to provide support force perpendicular to the support plate 3.

[0057] In use, install the foundation pit support device on the slope and drive the pins 7 into the soil to fix the fixing plate 1. Erect the support plate 3, and after the support plate 3 is tightly attached to the slope, use the pins 7 to hinge the support rod 4 to the channel rail 5. Rotate the screw rod 209 according to the support strength to complete the support installation.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A foundation pit support device with alarm function, characterized in that: 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); A grooved rail (5) is fixed on the fixed plate (1). Multiple hinge holes (6) are opened on the grooved rail (5). A pin (7) passes through the hinge holes (6) and the support rod (4) to make the grooved rail (5) hinged to the support rod (4). A 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 to 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). The reflective alarm device (2) includes a support shell (201), a support base (202), a slide rail (203), a slider I (204), a spring (205), an observation hole (206), and a reflective coating (207). The lower end of the support shell (201) is hinged to the fixed plate (1), and 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 provided 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) that passes through the support shell (201). A spring (205) is installed on the slide rail (203). The spring (205) causes the slider I (204) to have a downward tendency. Reflective coating (207) is provided on both sides of the slider I (204). Observation holes (206) are opened on both sides of the support shell (201). The reflective alarm device (2) includes a support shell (201), a support base (202), a slide rail (203), a slider I (204), a slider II (208), a lead screw (209), a spring (205), an observation hole (206), and a reflective coating (207). The lower end of the support shell (201) is hinged to the fixed plate (1), and the support plate (3) is fixed to the support shell (201). Two support seats (202) are fixed inside the support shell (201), and a slide rail (203) is provided between the two support seats (202). The slide rail (203) is slidably connected from top to bottom to slider II (208) and slider I (204). Slider I (204) is hinged to the support rod (4) passing through the support shell (201). The two support seats (202) are rotatably connected to the wire. The rod (209) and the lead screw (209) drive the slider II (208) to move up and down along the slide rail (203) by 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 provided on both sides of the slider I (204). Observation holes (206) are opened on both sides of the support shell (201).

2. The foundation pit support device with alarm function according to claim 1, characterized in that: The reflective coating (207) is a microprism reflective film.

3. The foundation pit support device with alarm function according to claim 1, characterized in that: The top end of the lead screw (209) passes through the support shell (201), and the top end of the lead screw (209) is provided with an internal hexagonal hole (210).

4. The foundation pit support device with alarm function according to claim 1, characterized in that: The lead screw (209) is driven by a stepper motor.

5. The foundation pit support device with alarm function according to claim 1, characterized in that: A distance sensor (211) for measuring the position of slider I (204) is installed on the support base (202) at the lower end. The distance sensor (211) is electrically connected to the alarm system.

6. The foundation pit support device with alarm function according to claim 5, characterized in that: The alarm system is a warning light (212).

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

8. The foundation pit support device with alarm function according to claim 1, characterized in that: The lower end of the fixing plate (1) is provided with multiple anchoring cones (9).

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