Foundation pit displacement measuring device for constructional engineering

Abstract

The utility model relates to the field of foundation pit displacement measurement, in particular to a foundation pit displacement measuring device for constructional engineering, which comprises a base, a vertical plate is vertically and fixedly connected to the front end of the base, and a plurality of longitudinal measuring mechanisms for measuring longitudinal displacement of a foundation pit are slidably connected to the front end of the vertical plate. The rear end of the longitudinal measuring mechanism extends to the rear end of the vertical plate and is fixedly connected with a longitudinal observation mechanism, the surface of the longitudinal measuring mechanism is transversely and slidably connected with a horizontal measuring mechanism used for measuring the horizontal displacement of the foundation pit, and the rear end of the horizontal measuring mechanism extends to the rear end of the vertical plate and is fixedly connected with a horizontal observation mechanism. The surface of the rear end of the vertical plate is fixedly connected with a first scaleplate and a second scaleplate which are used for being matched with the longitudinal observation mechanism and the horizontal observation mechanism, and the device can observe the displacement distance of the foundation pit, so that a worker can conveniently support the foundation pit at the first time of displacement of the foundation pit; and meanwhile, the device can measure the longitudinal displacement of the foundation pit at different depths, so that the comprehensiveness of the displacement measurement of the foundation pit is improved.

Description

Technical Field

[0001] This utility model relates to the field of foundation pit displacement measurement, and in particular to a foundation pit displacement measurement device for building engineering. Background Technology

[0002] An excavation pit is a pit dug according to design requirements before construction. During excavation, the unloading inside the pit causes displacement of the retaining structure under the pressure difference between the inside and outside, leading to deformation of the soil outside the retaining structure and settlement or movement of the soil or building outside the pit. Existing excavation pit displacement measurement usually involves setting up benchmark points and monitoring points at a certain distance from the pit, and then using a total station to measure the minute angle changes between the benchmark line and the monitoring points. This requires an open area inside the pit, and the location of the total station may affect the normal construction of the project. Furthermore, the total station requires workers to take measurements at regular intervals, which makes it difficult to detect the displacement of the pit in a timely manner. Therefore, a foundation pit displacement measurement device for construction projects is needed to quickly and conveniently check the displacement of the foundation pit during construction.

[0003] To address this, Chinese Patent Publication No. CN219753323U discloses a foundation pit displacement measuring device, comprising a pit body; a mounting frame is provided on the surface of the pit body, and an insert plate is slidably installed on the inner wall of the mounting frame. The end of the insert plate away from the mounting frame is inserted into the pit body, and a measuring frame is fixedly installed on the side of the mounting frame away from the insert plate. The surface of the measuring frame is provided with a scale, and a counterweight rod is slidably installed on the inner wall of the measuring frame. When the staff observes the distance after the measuring mark moves and uses the scale, they can observe the distance of the pit body settlement, thus facilitating the staff to observe the vertical displacement of the pit body and prevent potential safety hazards. When the pit body settlement is too large, the counterweight rod will press against a pressure switch, which will activate an alarm sound, thereby reminding relevant personnel to carry out maintenance and handling, and thus preventing potential building hazards.

[0004] The aforementioned patent uses the longitudinal displacement of the insert plate and the horizontal displacement of the support plate to trigger a pressure switch to achieve an alarm for foundation pit displacement. However, foundation pits are usually quite deep, and the depth of longitudinal displacement is variable. This means that a single insert plate cannot perform a complete longitudinal displacement measurement of the foundation pit. Furthermore, every small displacement of the foundation pit can affect the safety of construction. The device can only trigger an alarm after the foundation pit has displaced to a certain extent, which results in a delay in the alarm for foundation pit displacement. Utility Model Content

[0005] In response to the above situation and to overcome the shortcomings of the existing technology, this device provides a foundation pit displacement measuring device for building engineering. This device can observe the displacement distance of the foundation pit, allowing workers to support the foundation pit at the first sign of displacement. At the same time, this device can measure the longitudinal displacement of the foundation pit at different depths, improving the comprehensiveness of foundation pit displacement measurement.

[0006] The purpose of this utility model is to provide a foundation pit displacement measuring device for building engineering, including a base, a vertical plate fixedly connected to the front end of the base, a plurality of longitudinal measuring mechanisms for measuring the longitudinal displacement of the foundation pit slidably connected to the front end of the vertical plate, longitudinal observation mechanisms fixedly connected to the rear end of the longitudinal measuring mechanisms extending to the rear end of the vertical plate, a horizontal measuring mechanism for measuring the horizontal displacement of the foundation pit slidably connected to the surface of the longitudinal measuring mechanisms, a horizontal observation mechanism fixedly connected to the rear end of the horizontal measuring mechanism extending to the rear end of the vertical plate, and a first scale and a second scale fixedly connected to the rear end of the vertical plate for cooperating with the longitudinal observation mechanism and the horizontal observation mechanism.

[0007] Furthermore, multiple longitudinal grooves are provided through the surface of the upright plate, and longitudinal sliding shafts are fixedly connected in the longitudinal grooves respectively. The longitudinal measuring mechanism is slidably connected to the corresponding longitudinal groove.

[0008] Furthermore, the longitudinal measuring mechanism includes an insert plate, the front end of which is inserted into the pit, and the rear end of which passes through a longitudinal groove and is connected to the longitudinal observation mechanism. A transverse groove is provided on the surface of the insert plate, and a transverse sliding shaft is fixedly connected in the transverse groove. The horizontal measuring mechanism is slidably connected to the longitudinal groove.

[0009] Furthermore, the longitudinal observation mechanism includes a mounting plate, which is fixedly connected to the rear end of the insertion plate. The mounting plate is vertically slidably connected in a longitudinal groove. A first through hole is opened through the surface of the mounting plate, and a longitudinal sliding shaft is slidably disposed in the first through hole. A first scale mark is fixedly connected to one side of the rear end of the mounting plate, and a first mounting bracket is fixedly connected to the rear end of the mounting plate. A first camera is fixedly connected to one side of the first mounting bracket, and the positions of the first camera and the first scale mark correspond to each other.

[0010] Furthermore, the horizontal measuring mechanism includes a longitudinal baffle that is slidably connected to a transverse slide groove. A second through hole is provided through the surface of the longitudinal baffle, and the transverse slide shaft is slidably connected to the second through hole. A connecting rod is fixedly connected to one side of the longitudinal baffle and is connected to the horizontal observation mechanism.

[0011] Furthermore, the horizontal observation mechanism includes a crossbar, the front end of which is fixedly connected to a longitudinal baffle, a second scale mark fixedly connected to one side of the rear end of the crossbar, a second mounting bracket fixedly connected to the top of the rear end of the crossbar, and a second camera fixedly connected to the bottom of the second mounting bracket. The positions of the second camera and the second scale mark correspond to each other.

[0012] Furthermore, a first spring is sleeved on the surface of the longitudinal slide shaft, the top end of the first spring is fixedly connected to the lower surface of the insert plate, and the bottom end of the first spring is fixedly connected to the bottom of the longitudinal slide groove.

[0013] Furthermore, a second spring is fitted onto the surface of the transverse sliding shaft. The front end of the second spring is fixedly connected to the rear end surface of the longitudinal baffle, and the rear end of the second spring is fixedly connected to the rear end surface of the transverse sliding groove.

[0014] Furthermore, the surface of the upright plate is provided with multiple square holes to provide sliding space for the crossbar.

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

[0016] 1. Compared with the prior art, this utility model can conveniently reflect the distance of longitudinal and horizontal displacement of the foundation pit through the longitudinal displacement mechanism and the horizontal displacement mechanism. At the same time, the longitudinal observation mechanism and the horizontal observation mechanism are used to measure and observe the displacement distance of the longitudinal displacement mechanism and the horizontal displacement mechanism, which makes it convenient for workers to observe whether there is displacement in the foundation pit in real time and improves the speed of detection of foundation pit displacement.

[0017] 2. Compared with the prior art, this utility model uses multiple longitudinal measuring mechanisms of different heights to be inserted into the foundation pit at the corresponding heights, which facilitates the measurement of longitudinal and horizontal displacement distances at different heights in the foundation pit, thus improving the comprehensiveness of foundation pit displacement measurement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the front end of the overall structure of a foundation pit displacement measuring device for building engineering according to this utility model;

[0019] Figure 2 This is a schematic diagram of the rear end of the overall structure of a foundation pit displacement measuring device for building engineering according to this utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the moving mold and the fixed mold of the foundation pit displacement measuring device for building engineering according to this utility model;

[0021] Figure 4 This is a schematic diagram of the lifting frame and injection molding workbench structure of a foundation pit displacement measuring device for building engineering according to this utility model;

[0022] Figure 5 This is a schematic diagram of the jacking mechanism of a foundation pit displacement measuring device for building engineering according to this utility model.

[0023] Explanation of reference numerals in the attached drawings: 1. Base; 2. Vertical plate; 3. Longitudinal measuring mechanism; 31. Insert plate; 32. Transverse slide groove; 33. Transverse sliding shaft; 34. Second spring; 4. Horizontal measuring mechanism; 41. Longitudinal baffle; 42. Second through hole; 43. Connecting rod; 5. Longitudinal observation mechanism; 51. Mounting plate; 52. First scale mark; 53. First mounting bracket; 54. First camera; 55. First through hole; 6. Horizontal observation mechanism; 61. Crossbar; 62. Second scale mark; 63. Second mounting bracket; 64. Second camera; 7. First scale; 8. Second scale; 9. Longitudinal slide groove; 10. Longitudinal sliding shaft; 11. First spring; 12. Square hole. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of the embodiments of this application easier to understand, the embodiments of this application are further described below in conjunction with the figures and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of this application and are not intended to limit the embodiments of this application.

[0025] according to Figures 1 to 5 As shown, a foundation pit displacement measuring device for construction engineering includes a base 1, a vertical plate 2 is vertically fixedly connected to the front end of the base 1, a plurality of longitudinal measuring mechanisms 3 for measuring the longitudinal displacement of the foundation pit are slidably connected to the front end of the vertical plate 2, longitudinal observation mechanisms 5 are fixedly connected to the rear end of the longitudinal measuring mechanisms 3 and the rear end of the vertical plate 2, and a horizontal measuring mechanism 4 for measuring the horizontal displacement of the foundation pit is slidably connected to the surface of the longitudinal measuring mechanisms 3, a horizontal observation mechanism 6 is fixedly connected to the rear end of the horizontal measuring mechanism 4 and the rear end of the horizontal measuring mechanism 4, and a first scale 7 and a second scale 8 are fixedly connected to the rear end of the vertical plate 2 for cooperating with the longitudinal observation mechanism 5 and the horizontal observation mechanism 6.

[0026] In practical implementation, multiple longitudinal measuring mechanisms 3 can be set up, and these mechanisms are distributed vertically with uniform spacing according to the depth of the foundation pit. After placing the device in a suitable position within the foundation pit, the front ends of the multiple longitudinal measuring mechanisms 3 are horizontally inserted into different heights within the foundation pit. During insertion, it is ensured that the horizontal measuring mechanism 4 slidably connected to each longitudinal measuring mechanism 3 is in contact with the vertical wall of the foundation pit. Inserting the longitudinal measuring mechanisms 3 at different heights within the foundation pit facilitates the measurement of longitudinal and horizontal displacement distances of the foundation pit beyond its depth. When longitudinal displacement occurs at different heights along the edge of the foundation pit, the longitudinal displacement of the soil at different locations will drive the corresponding longitudinal measuring mechanisms 3 to move. The measuring mechanism 3 moves downward, and the moving longitudinal measuring mechanism 3 drives the longitudinal observation mechanism 5 at the rear end of the upright plate 2 to move downward synchronously. The first scale 7 is longitudinally fixedly connected to the rear end surface of the upright plate 2, and the second scale 8 is horizontally fixedly connected to the rear end surface of the upright plate 2. By cooperating with the longitudinal observation mechanism 5 and the first scale 7, the descent distance of the longitudinal measuring mechanism 3 is observed to measure the longitudinal displacement of the foundation pit. When the foundation pit experiences horizontal displacement, the horizontal displacement of the foundation pit drives the horizontal measuring mechanism 4 to move towards the upright plate 2. By cooperating with the horizontal observation mechanism 6 at the rear end of the upright plate 2 and the second scale 8, the horizontal movement distance of the horizontal displacement mechanism is observed to measure the horizontal displacement of the foundation pit.

[0027] Furthermore, multiple longitudinal grooves 9 are provided through the surface of the upright plate 2, and longitudinal sliding shafts 10 are fixedly connected in the longitudinal grooves 9 respectively. The longitudinal measuring mechanism 3 is slidably connected to the corresponding longitudinal grooves 9 respectively.

[0028] In practical implementation, the longitudinal measuring mechanism 3 slides up and down on the surface of the vertical plate 2 through the longitudinal sliding groove 9 and the longitudinal sliding shaft 10, which provides space for the longitudinal measuring mechanism 3 to slide downward and provides a position for the longitudinal measuring mechanism 3 to be installed on the vertical plate 2.

[0029] Furthermore, the longitudinal measuring mechanism 3 includes an insert plate 31. The front end of the insert plate 31 is inserted into the foundation pit. After being inserted into the foundation pit, the front end of the insert plate 31 can move up and down synchronously with the longitudinal displacement of the foundation pit. The rear end of the insert plate 31 passes through the longitudinal slide groove 9 and is connected to the longitudinal observation mechanism 5. When the foundation pit undergoes longitudinal displacement, the rear end of the insert plate 31 moves downward synchronously. Connecting the insert plate 31 to the longitudinal observation mechanism 5 facilitates the longitudinal observation mechanism 5 to observe the downward movement distance of the insert plate 31 when the foundation pit undergoes longitudinal displacement, thereby facilitating the measurement of the longitudinal displacement distance of the foundation pit. A transverse slide groove 32 is provided on the surface of the insert plate 31. A transverse slide shaft 33 is fixedly connected in the transverse slide groove 32. The horizontal measuring mechanism 4 is slidably connected to the longitudinal slide groove 9. The transverse slide groove 32 and the transverse slide shaft provide space for the horizontal measuring mechanism 4 to move backward when the foundation pit undergoes horizontal displacement, providing position and space for the horizontal displacement mechanism to be installed on the insert plate 31.

[0030] Furthermore, the longitudinal observation mechanism 5 includes a mounting plate 51, which is fixedly connected to the rear end of the insertion plate 31. The mounting plate 51 is vertically slidably connected in the longitudinal slide groove 9. A first through hole 55 is opened through the surface of the mounting plate 51. The longitudinal slide shaft 10 is slidably disposed in the first through hole 55. A first scale mark 52 is fixedly connected to one side of the rear end of the mounting plate 51. A first mounting bracket 53 is fixedly connected to the rear end of the mounting plate 51. A first camera 54 is fixedly connected to one side of the first mounting bracket 53. The positions of the first camera 54 and the first scale mark 52 correspond to each other.

[0031] In practical implementation, the mounting plate 51 is vertically slidably disposed within the longitudinal groove 9, and the longitudinal sliding shaft 10 is slidably connected to the first through hole 55. The arrangement of the longitudinal sliding shaft 10 facilitates the vertical sliding of the mounting plate 51 within the longitudinal groove 9, and also facilitates the connection of the insert plate 31 and the longitudinal observation mechanism 5. A first scale 52 is connected to one side of the rear end of the mounting plate 51. The first scale 52 moves as the insert plate 31 moves downward. The surface of the first ruler 7 at the rear end of the upright plate 2 is provided with multiple scale marks. By comparing the first scale 52 with the scale marks on the surface of the first ruler 7, the longitudinal displacement distance of the insert plate 31 can be determined. This allows for the determination of the longitudinal displacement distance of the foundation pit, enabling the measurement of the longitudinal displacement distance. The first mounting bracket 53 can be configured as an L-shape, allowing the first camera 54 to be aligned with the first scale mark 52 and the first ruler 7. The first camera 54 is connected to the terminal equipment of the staff in the observation room via a network cable. Simultaneously, the first camera 54 can project the images of the first scale mark 52 and the first ruler 7 observed onto the terminal equipment, facilitating remote observation of the longitudinal displacement distance of the foundation pit by workers. This enables workers to detect and handle any displacement of the foundation pit remotely.

[0032] Furthermore, the horizontal measuring mechanism 4 includes a longitudinal baffle 41, which is slidably connected to a transverse slide groove 32. A second through hole 42 is provided through the surface of the longitudinal baffle 41, and the transverse slide shaft 33 is slidably connected to the second through hole 42. A connecting rod 43 is fixedly connected to one side of the longitudinal baffle 41, and the connecting rod 43 is connected to the horizontal observation mechanism 6.

[0033] In practical implementation, the sliding connection between the transverse slide 32 and the longitudinal baffle 41 and the insert plate 31 provides the installation position. At the same time, the transverse slide shaft 33 improves the stability of the horizontal displacement of the longitudinal baffle 41 through the cooperation of the second through hole 42, so that the longitudinal insert plate 31 can maintain horizontal movement, thereby improving the observation accuracy of the horizontal observation mechanism 6 when the longitudinal baffle 41 moves backward.

[0034] Furthermore, the horizontal observation mechanism 6 includes a crossbar 61, the front end of which is fixedly connected to the longitudinal baffle 41, a second scale mark 62 is fixedly connected to one side of the rear end of the crossbar 61, a second mounting bracket 63 is fixedly connected to the top of the rear end of the crossbar 61, and a second camera 64 is fixedly connected to the bottom of the second mounting bracket 63. The positions of the second camera 64 and the second scale mark 62 correspond to each other.

[0035] In practical implementation, the longitudinal baffle 41 is installed in close contact with the vertical wall of the foundation pit. When the foundation pit experiences horizontal displacement, the horizontal displacement causes the longitudinal baffle 41 to move towards the rear end of the insert plate 31. The rearward displacement of the longitudinal baffle 41 causes the crossbar 61 to move backward synchronously. The second mounting bracket 63 is set in an L-shape. The L-shaped second mounting bracket 63 facilitates the observation of the second scale 62 and the second ruler 8 from above the second scale 62 of the second camera 64. The backward movement of the crossbar causes the second scale and the second camera 64 at the rear end of the vertical plate 2 to move synchronously. By observing the second scale 62 and comparing its position with the second ruler 8 through the moving second camera 64, the distance of the horizontal displacement of the foundation pit can be measured. The second camera 64 is connected to the terminal equipment of the staff in the observation room through a network cable. At the same time, the second camera 64 can project the images of the second scale 62 and the second ruler 8 observed to the terminal equipment, which allows workers to observe the distance of the horizontal displacement of the foundation pit from a distance.

[0036] Furthermore, a first spring 11 is sleeved on the surface of the longitudinal slide shaft 10. The top end of the first spring 11 is fixedly connected to the lower surface of the insert plate 31, and the bottom end of the first spring 11 is fixedly connected to the bottom of the longitudinal slide groove 9.

[0037] In practical implementation, the first spring 11 can provide an upward lifting force for the insert plate 31, so that the insert plate 31 can be kept at the top of the longitudinal chute 9 when it is not inserted into the pit.

[0038] Furthermore, a second spring 34 is sleeved on the surface of the transverse slide shaft 33. The front end of the second spring 34 is fixedly connected to the rear end surface of the longitudinal baffle 41, and the rear end of the second spring 34 is fixedly connected to the rear end surface of the transverse slide groove 32.

[0039] In practice, the second spring 34 can use its elastic force to push the longitudinal baffle 41 toward the pit, ensuring that the longitudinal baffle 41 is in close contact with the surface of the pit wall in the early stage of equipment installation.

[0040] Furthermore, the surface of the upright plate 2 is provided with a plurality of square holes 12 for providing sliding space for the crossbar 61.

[0041] In practical implementation, since the insert plate 31 needs to measure the longitudinal displacement distance of the foundation pit, when the foundation pit experiences longitudinal displacement, it will drive the insert plate 31 to move downward. The crossbar 61 is used to connect the longitudinal baffle 41 to the horizontal observation mechanism 6, and the crossbar 61 is connected to the longitudinal baffle 41 that is slidably connected to the surface of the insert plate 31. Therefore, when the insert plate 31 moves, it will drive the crossbar 61 to move longitudinally. Thus, the square hole 12 opened on the surface of the vertical plate 2 can provide space for the crossbar 61 to move downward.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application 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 or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A foundation pit displacement measuring device for construction engineering, comprising a base (1), a vertical plate (2) is vertically and fixedly connected to the front end of the base (1), characterized in that: The front end of the vertical plate (2) is slidably connected to a plurality of longitudinal measuring mechanisms (3) for measuring the longitudinal displacement of the foundation pit. The rear end of the longitudinal measuring mechanism (3) extends to the rear end of the vertical plate (2) and is fixedly connected to a longitudinal observation mechanism (5). The surface of the longitudinal measuring mechanism (3) is laterally slidably connected to a horizontal measuring mechanism (4) for measuring the horizontal displacement of the foundation pit. The rear end of the horizontal measuring mechanism (4) extends to the rear end of the vertical plate (2) and is fixedly connected to a horizontal observation mechanism (6). The rear end surface of the vertical plate (2) is fixedly connected to a first scale (7) and a second scale (8) for cooperating with the longitudinal observation mechanism (5) and the horizontal observation mechanism (6).

2. The foundation pit displacement measuring device for construction engineering according to claim 1, characterized in that: Multiple longitudinal grooves (9) are provided through the surface of the upright plate (2). Longitudinal sliding shafts (10) are fixedly connected in the longitudinal grooves (9). The longitudinal measuring mechanism (3) is slidably connected to the corresponding longitudinal grooves (9).

3. The building engineering foundation pit displacement measuring device according to claim 2, characterized in that: The longitudinal measuring mechanism (3) includes an insert plate (31). The front end of the insert plate (31) is inserted into the pit. The rear end of the insert plate (31) passes through the longitudinal slide groove (9) and is connected to the longitudinal observation mechanism (5). A transverse slide groove (32) is provided on the surface of the insert plate (31). A transverse slide shaft (33) is fixedly connected in the transverse slide groove (32). The horizontal measuring mechanism (4) is slidably connected to the longitudinal slide groove (9).

4. The building engineering foundation pit displacement measuring device according to claim 3, characterized in that: The longitudinal observation mechanism (5) includes a mounting plate (51), which is fixedly connected to the rear end of the insertion plate (31). The mounting plate (51) is vertically slidably connected in the longitudinal slide groove (9). A first through hole (55) is opened through the surface of the mounting plate (51). A longitudinal slide shaft (10) is slidably disposed in the first through hole (55). A first scale mark (52) is fixedly connected to one side of the rear end of the mounting plate (51). A first mounting bracket (53) is fixedly connected to the rear end of the mounting plate (51). A first camera (54) is fixedly connected to one side of the first mounting bracket (53). The positions of the first camera (54) and the first scale mark (52) correspond to each other.

5. A building construction foundation pit displacement measuring device according to claim 3 or 4, characterized in that: The horizontal measuring mechanism (4) includes a longitudinal baffle (41), which is slidably connected to a transverse slide (32). A second through hole (42) is provided through the surface of the longitudinal baffle (41), and a transverse slide shaft (33) is slidably connected to the second through hole (42). A connecting rod (43) is fixedly connected to one side of the longitudinal baffle (41), and the connecting rod (43) is connected to the horizontal observation mechanism (6).

6. The building engineering foundation pit displacement measuring device according to claim 5, characterized in that: The horizontal observation mechanism (6) includes a crossbar (61), the front end of the crossbar (61) is fixedly connected to the longitudinal baffle (41), a second scale mark (62) is fixedly connected to one side of the rear end of the crossbar (61), a second mounting bracket (63) is fixedly connected to the top of the rear end of the crossbar (61), a second camera (64) is fixedly connected to the bottom of the second mounting bracket (63), and the positions of the second camera (64) and the second scale mark (62) correspond to each other.

7. The building engineering foundation pit displacement measuring device according to claim 4, characterized in that: A first spring (11) is sleeved on the surface of the longitudinal slide shaft (10). The top end of the first spring (11) is fixedly connected to the lower surface of the insert plate (31), and the bottom end of the first spring (11) is fixedly connected to the bottom of the longitudinal slide groove (9).

8. The building engineering foundation pit displacement measuring device according to claim 6, characterized in that: A second spring (34) is sleeved on the surface of the transverse slide shaft (33). The front end of the second spring (34) is fixedly connected to the rear end surface of the longitudinal baffle (41), and the rear end of the second spring (34) is fixedly connected to the rear end surface of the transverse slide groove (32).

9. The building engineering foundation pit displacement measuring device according to claim 6 or 8, characterized in that: The surface of the upright plate (2) is provided with a number of square holes (12) to provide sliding space for the crossbar (61).

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