CN115710893A - Foundation pit measuring device - Google Patents

Abstract

The application relates to a foundation pit measuring device, which mainly relates to the technical field of auxiliary measuring equipment for deep foundation pit construction and comprises a base, a comparison mechanism and a measuring mechanism, wherein the comparison mechanism is vertically arranged on one side edge of the base; the measuring mechanism comprises a lifting component vertically arranged on the base, a measuring rod horizontally arranged at one end of the lifting component far away from the base in a penetrating manner, and a measuring plate arranged at one end of the measuring rod far away from the lifting component; the measuring plate is rotatably connected with the measuring rod; the measuring plate and the comparison mechanism are both attached to the side wall of the foundation pit. The method and the device have the advantages of high measurement precision, convenience in operation and high working efficiency.

Description

A foundation pit measuring device

technical field

The present application relates to the technical field of auxiliary measuring equipment for deep foundation pit construction, in particular to a foundation pit measuring device.

Background technique

Foundation pit monitoring is an important link in the construction of foundation pit engineering. Observe and analyze the work, and feedback the monitoring results in time, predict the deformation and stable state development that will be caused by further construction, and judge the degree of impact of construction on the surrounding environment according to the prediction to guide design and construction and realize information construction.

Foundation pit monitoring mainly includes: supporting structure, related natural environment, construction conditions, groundwater conditions, foundation pit bottom and surrounding soil, surrounding buildings (structures), surrounding underground pipelines and underground facilities, surrounding important roads, etc. Among them, the monitoring of the deep horizontal displacement of the foundation pit generally adopts the method of observing the horizontal displacement at each depth with an inclinometer. This measurement method needs to pre-embed an inclinometer pipe into the side wall of the foundation pit, and the operation process is relatively cumbersome and complicated, time-consuming and labor-intensive. During the measurement process, the position of the inclinometer tube pre-buried in the soil will change with the collapse of the side wall of the foundation pit. Therefore, it is necessary to record and re-measure the initial position and attitude of the inclinometer tube with the help of other equipment, and re-comparison The correct process increases the measurement system error and adversely affects the detection accuracy.

In view of the related technologies mentioned above, the inventor believes that the existing methods for detecting the deep horizontal displacement of foundation pits have the disadvantages of inconvenient operation and limited measurement accuracy.

Contents of the invention

In order to avoid the influence of the systematic error generated in the re-comparison process on the accuracy of the deep horizontal displacement detection of the foundation pit, improve the measurement accuracy, simplify the operation steps, and improve the measurement efficiency, the application provides a foundation pit measurement device.

A foundation pit measurement device provided by the application adopts the following technical scheme:

A foundation pit measuring device, comprising a base, a comparison mechanism vertically arranged on one side edge of the base, and a measuring mechanism vertically arranged on the base in line with the comparison mechanism; the measurement mechanism includes a vertically arranged The lifting assembly on the base, the measuring rod passing through the end of the lifting assembly away from the base along the horizontal direction, and the measuring plate arranged at the end of the measuring rod away from the lifting assembly; the measuring plate and the measuring The rods are rotatably connected; the measuring plate and the comparison mechanism are both set against the side wall of the foundation pit.

By adopting the above technical solution, the base supports other parts of the structure of the application and provides an installation location. At the same time, it can facilitate the location movement of the application, and it is convenient for construction personnel to use the application to measure multiple points that need to be measured. To improve the overall efficiency of the measurement work, the measuring mechanism installed on the base can visualize the lateral displacement and inclination caused by the collapse of the side wall of the foundation pit, and the lifting components in the measuring mechanism can be used to adjust the vertical height of the measuring mechanism , so that the hinge position of the measuring plate and the measuring rod can coincide with the half height point of the side wall of the foundation pit, further improving the detection accuracy of the measuring mechanism, and the measuring rod can be used to measure the position change in the horizontal direction of the side wall of the foundation pit, The basic measurement function of this application is realized, and the structural design of the comparison mechanism installed on the base to fit the side wall of the foundation pit will not change its position with the collapse of the foundation pit, so the step of repositioning and comparison is eliminated, reducing The system error generated in the measurement process is eliminated, and the invention purpose of improving the measurement accuracy, simplifying the operation steps and improving the measurement efficiency is achieved.

Optionally, the lifting assembly includes a support cylinder vertically arranged on the base, a threaded rod pierced on the support cylinder, and a connecting head rotatably connected to the end of the threaded rod away from the support cylinder; The rod is threadedly engaged with the support cylinder.

By adopting the above technical solution, the supporting cylinder plays the role of supporting and limiting the rotation and lifting of the threaded rod, and the connecting head plays the role of connecting the lifting component and the measuring rod.

Optionally, a plurality of ribs are vertically connected between the support cylinder and the base; the plurality of ribs are evenly arranged along the circumference of the support cylinder.

By adopting the above technical solution, the multiple rib structures connected between the support cylinder and the base can increase the stability of the connection structure between the base and the support cylinder, further improve the ability of the support cylinder to resist the deformation in the horizontal direction, and improve the strength of the application. Carrying capacity and scope of application.

Optionally, a positioning bolt is pierced on the connecting head in a direction parallel to the axis of the support cylinder; one end of the positioning bolt abuts against the measuring rod.

By adopting the above technical solution, the positioning bolt installed on the connecting head fixes the position of the measuring rod, which can avoid the position change of the measuring rod due to shaking or interference caused by other factors, thereby affecting the measurement accuracy.

Optionally, a limit block is fixed at the end of the measuring rod away from the measuring plate; the limit block is detachably connected to the measuring rod.

By adopting the above technical solution, the limit block structure can prevent the measuring rod from excessively sliding along the direction away from the lifting assembly and then disengage from the lifting assembly. The structural design of the detachable connection between the limit block structure and the measuring rod increases the installation of And the convenience of the disassembly process reduces the space occupation of the application in the non-working state, and further improves the convenience of use of the application.

Optionally, the base includes a bottom plate, directional wheels symmetrically arranged on the bottom plate, and a plurality of anchor rods vertically pierced on the bottom plate; the axle of the directional wheel is slidably connected with the bottom plate along a direction perpendicular to the ground , the anchor rod is threadedly engaged with the bottom plate.

By adopting the above technical solution, the bottom plate in the base is the main structure of the base, and the directional wheel installed on the bottom plate can make the application move in one direction, which simplifies the steps of the position movement of the application. The axle of the directional wheel The structural design of the sliding connection with the bottom plate along the direction perpendicular to the ground can facilitate the user to switch the base between the two states of position movement and position fixation according to different actual situations, and the anchor rod pierced on the bottom plate can fix the base at the bottom of the pit.

Optionally, the end of the anchor rod away from the ground is fixedly provided with a handwheel, and the end of the anchor rod close to the ground is provided with a tapered section.

By adopting the above technical scheme, the handwheel structure at the end of the anchor rod away from the ground can facilitate the surveyor to manually screw in or out the anchor rod, and the tapered section structure at the end of the anchor rod close to the ground can reduce the insertion of the anchor rod into the bottom of the foundation pit resistance encountered.

Optionally, a level is provided on the bottom plate along a direction parallel to the upper surface.

By adopting the above technical solution, the level installed on the bottom plate parallel to the upper surface can measure whether the installation posture of the bottom plate is horizontal, so that it is convenient for the surveyor to adjust it, so as to ensure the levelness and verticality of the measuring mechanism during the measurement process. Spend.

Optionally, the comparison mechanism includes a support plate vertically arranged on one side edge of the base and a plurality of connecting plates vertically connected to the upper surface of the support plate and the base; the support plate includes The fixed plate on the top and the sliding plate slidably connected with the fixed plate.

By adopting the above technical scheme, the support plate structure in the comparison mechanism is in vertical contact with the side wall of the foundation pit, which plays a supporting role on the side wall of the foundation pit, and the multiple connecting plate structures vertically connected to the support plate and the upper surface of the base increase the The ability of the supporting plate to resist deformation and the structural design of the sliding connection between the sliding plate and the fixed plate in the supporting plate can increase the supporting area of the supporting plate and improve the scope of application of the present application.

Optionally, the end of the sliding plate away from the measuring plate is fixedly provided with lifting lugs.

By adopting the above technical solution, the lifting lug structure fixedly installed at the end of the sliding plate far away from the measuring plate can be at the tension point of the steel cable when the lifting equipment lifts the application, which facilitates the hoisting and transfer process of the application, and can be used as an auxiliary positioning tool Structure, with the anchor rod to achieve a better positioning effect.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The base in this application plays a supporting role for other parts of the structure of this application and provides an installation location. At the same time, it can facilitate the location movement of this application, and it is convenient for construction personnel to use this application to measure multiple points that need to be measured, and improve To improve the overall efficiency of the measurement work, the measuring mechanism installed on the base can visualize the lateral displacement and inclination caused by the collapse of the side wall of the foundation pit, and the lifting components in the measuring mechanism can be used to adjust the vertical height of the measuring mechanism , so that the hinge position of the measuring plate and the measuring rod can coincide with the half height point of the side wall of the foundation pit, further improving the detection accuracy of the measuring mechanism, and the measuring rod can be used to measure the position change in the horizontal direction of the side wall of the foundation pit, The basic measurement function of this application is realized, and the structural design of the comparison mechanism installed on the base to fit the side wall of the foundation pit will not change its position with the collapse of the foundation pit, so the step of repositioning and comparison is eliminated, reducing The system error generated in the measurement process is eliminated, and the invention purpose of improving the measurement accuracy, simplifying the operation steps and improving the measurement efficiency is achieved;

2. The bottom plate in the base of this application is the main structure of the base. The directional wheel installed on the bottom plate can make the application move in one direction, which simplifies the steps of the position movement of the application. The axle of the directional wheel The structural design of the sliding connection with the bottom plate along the direction perpendicular to the ground can facilitate the user to switch the base between the two states of position movement and position fixation according to different actual situations, and the anchor rod pierced on the bottom plate can fix the base at the bottom of the foundation pit;

3. The support plate structure in the comparison mechanism in this application is in vertical contact with the side wall of the foundation pit, which plays a supporting role on the side wall of the foundation pit. Multiple connection plate structures vertically connected to the support plate and the upper surface of the base increase the The ability of the supporting plate to resist deformation and the structural design of the sliding connection between the sliding plate and the fixed plate in the supporting plate can increase the supporting area of the supporting plate and improve the scope of application of the present application.

Description of drawings

Fig. 1 is a schematic structural diagram of a foundation pit measuring device disclosed in an embodiment of the present application.

Fig. 2 is a schematic structural diagram of the anchor rod in the embodiment of the present application.

Fig. 3 is a schematic structural diagram of the measuring mechanism in the embodiment of the present application.

Explanation of reference signs: 1, base; 11, bottom plate; 12, directional wheel; 13, anchor rod; 111, level gauge; 131, hand wheel; 2, comparison mechanism; 21, support plate; 22, connecting plate; 211, fixed 212, sliding plate; 213, lifting lug; 3, measuring mechanism; 31, lifting assembly; 32, measuring rod; 33, measuring plate; 311, supporting cylinder; 312, threaded rod; 313, connecting head; plate; 315, positioning bolts; 321, limit block.

Detailed ways

The present application will be described in further detail below in conjunction with accompanying drawings 1-3.

Foundation pit measurement is one of the necessary procedures before excavation of deep foundation pits. The deep horizontal displacement of the foundation pit is one of the important characterizations of the physical and chemical properties of the side wall of the foundation pit. The monitoring of the deep horizontal displacement of the foundation pit generally adopts the method of observing the horizontal displacement at each depth with an inclinometer. This measurement method needs to pre-embed an inclinometer pipe into the side wall of the foundation pit, and the operation process is relatively cumbersome and complicated. During the measurement process, the position of the inclinometer tube pre-buried in the soil will change with the collapse of the side wall of the foundation pit. Therefore, it is necessary to record and re-measure the initial position and attitude of the inclinometer tube with the help of other equipment, and re-comparison The correct process increases the measurement system error and adversely affects the detection accuracy. In order to avoid the influence of the systematic error generated in the re-comparison process on the accuracy of the deep horizontal displacement detection of the foundation pit, improve the measurement accuracy, simplify the operation steps, and improve the measurement efficiency, the application provides a foundation pit measurement device.

The embodiment of the application discloses a foundation pit measuring device. Referring to FIG. 1 , the foundation pit measurement device includes a base 1 , a comparison mechanism 2 and a measurement mechanism 3 . Wherein, the base 1 is attached to the bottom surface of the foundation pit and fixedly arranged along the horizontal direction. Both the comparison mechanism 2 and the measurement mechanism 3 are vertically and fixedly installed on the upper surface of the base 1, and both are attached to the side walls of the foundation pit.

Referring to FIGS. 1 and 2 , the base 1 includes a bottom plate 11 , directional wheels 12 and anchor rods 13 . Wherein, the bottom plate 11 may be a solid rectangular metal plate. A level 111 is installed on the upper surface of the base plate 11 along a direction parallel to the base plate 11 . Base plate 11 edge positions are equipped with four orientation wheels. The wheel shaft of the directional wheel is slidably connected with the base plate 11 along the direction perpendicular to the ground, so that the base 1 can switch between the two states that the base plate 11 contacts the ground and the directional wheel 12 contacts the ground. The position of the directional wheel 12 is installed on the base plate 11 along the A bolt for adjusting the height of the directional wheel 12 axles is pierced in a direction perpendicular to the base plate 11 . The anchor rod 13 is pierced on the base plate 11, and a cylinder is vertically arranged at the position where the anchor rod 13 is installed on the base plate 11, and a threaded section is arranged on the inner wall of the cylinder. The anchor rod 13 and the bottom plate 11 are screwed together. The end of the anchor rod 13 away from the ground is fixedly provided with a hand wheel 131 , and the end of the anchor rod 13 higher than the ground is provided with a tapered section.

Referring to FIG. 1 , the comparison mechanism 2 includes a support plate 21 and a connecting plate 22 . Wherein, the support plate 21 includes a fixed plate 211 and a sliding plate 212 . The fixing plate 211 may be a rectangular metal plate with a groove in the middle. The fixing plate 211 is vertically connected to one side edge of the base 1 . The sliding plate 212 is slidably connected with the fixing plate 211 , and the sliding plate 212 is installed above the fixing plate 211 . An end of the sliding plate 212 away from the measuring mechanism 3 is fixedly mounted with a lifting ear 213 . The connecting plate 22 is installed perpendicular to the base 1 and the fixing plate 211 . The number of connecting plates 22 is two. The two connecting plates 22 are arranged in parallel.

Referring to FIGS. 1 and 3 , the measuring mechanism 3 includes a lifting assembly 31 , a measuring rod 32 and a measuring plate 33 . Wherein, the lifting assembly 31 includes a support cylinder 311 , a threaded rod 312 , a connecting head 313 , ribs 314 and positioning bolts 315 . The supporting cylinder 311 may be a hollow metal cylinder arranged vertically on the base 1 . The inner wall of the support tube 311 is threaded, and the threaded rod 312 passes through the support tube 311 and is threadedly engaged with the support tube 311 . Four ribs 314 are vertically connected to the side wall of the support tube 311 , and the four ribs 314 are evenly arranged along the circumference of the support tube 311 . The connecting head 313 is mounted on the end of the threaded rod 312 away from the support cylinder 311 by means of rotational connection. A positioning bolt 315 is pierced on the top of the connecting head 313 , and the positioning bolt 315 abuts against the measuring rod 32 . The measuring rod 32 passes through the connecting head 313 along the horizontal direction. One end of the measuring rod 32 is detachably mounted with a limit block 321 in a threaded manner. The elongation direction on the measuring rod 32 is provided with a scale mark. The measuring board 33 is hingedly mounted on the end of the measuring rod 32 away from the lifting assembly 31 . The measuring board 33 is arranged in close contact with the side wall of the foundation pit. The measuring board 33 can be stretched in two directions up and down.

The implementation principle of a foundation pit measuring device in the embodiment of the present application is as follows: the surveyor first uses a hoist or crane to place the application hoisting device on the bottom of the foundation pit through a steel cable. Promote the application so that both the measuring mechanism 3 and the comparison mechanism 2 are attached to the side wall of the foundation pit. The orientation wheel 12 is raised so that the base plate 11 is in direct contact with the bottom surface of the foundation pit. Turn the hand wheel 131 to make the anchor rod 13 vertically inserted into the ground, and then adjust the levelness of the base 1 by rotating the anchor rod 13 according to the situation displayed by the level gauge 111 . Finally, the height of the lifting assembly 31 is adjusted so that the hinge point of the measuring plate 33 and the measuring rod 32 is located at half the height of the side wall of the foundation pit and the measurement can be started.

After a period of time, by comparing the angle difference between the measuring plate 33 and the fixed plate 211 and the displacement difference of the measuring rod 32, the measurement result of the lateral position change of the foundation pit within the time difference can be read.

All of the above are preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made according to the structure, shape, and principle of the application should be covered by the protection scope of the application. Inside.

Claims (10)

1. A foundation pit measurement device, characterized in that it includes a base (1), a comparison mechanism (2) vertically arranged on one side edge of the base (1), and a vertical comparison mechanism (2) attached to the comparison mechanism (2). The measuring mechanism (3) on the base (1); the measuring mechanism (3) includes a lifting assembly (31) vertically arranged on the base (1), passing through the lifting assembly ( 31) The measuring rod (32) at the end away from the base (1) and the measuring plate (33) at the end of the measuring rod (32) away from the lifting assembly (31); the measuring plate (33) It is rotatably connected with the measuring rod (32); the measuring plate (33) and the comparison mechanism (2) are both set against the side wall of the foundation pit. 2. A foundation pit measurement device according to claim 1, characterized in that: the lifting assembly (31) includes a support cylinder (311) vertically arranged on the base (1), pierced through the The threaded rod (312) on the support cylinder (311) and the connection head (313) that is rotatably connected to the end of the threaded rod (312) away from the support cylinder (311); the threaded rod (312) and the support Barrel (311) thread fits. 3. The foundation pit measuring device according to claim 2, characterized in that: there are multiple ribs (314) vertically connected between the support cylinder (311) and the base (1); The ribs (314) are evenly arranged along the circumferential direction of the support cylinder (311). 4. A foundation pit measuring device according to claim 2, characterized in that: the connecting head (313) is pierced with a positioning bolt (315) along a direction parallel to the axis of the support cylinder (311); One end of the positioning bolt (315) abuts against the measuring rod (32). 5. A foundation pit measuring device according to claim 1, characterized in that: the end of the measuring rod (32) away from the measuring plate (33) is fixed with a limit block (321); the limit The block (321) is detachably connected with the measuring rod (32). 6. A foundation pit measuring device according to claim 1, characterized in that: the base (1) includes a bottom plate (11), directional wheels (12) symmetrically arranged on the bottom plate (11) and multiple An anchor rod (13) vertically pierced on the bottom plate (11); the axle of the directional wheel (12) is slidingly connected with the bottom plate (11) along the direction perpendicular to the ground, and the anchor rod (13) It is threadedly matched with the bottom plate (11). 7. A foundation pit measuring device according to claim 6, characterized in that: the end of the anchor rod (13) away from the ground is fixed with a hand wheel (131), and the end of the anchor rod (13) close to the ground One end is provided with a tapered section. 8. A foundation pit measuring device according to claim 6, characterized in that: a level (111) is provided on the bottom plate (11) along a direction parallel to the upper surface. 9. A foundation pit measurement device according to claim 1, characterized in that: the comparison mechanism includes a support plate (21) vertically arranged on one side edge of the base (1) and a plurality of vertically connected The support plate (21) and the connection plate (22) on the upper surface of the base (1); the support plate (21) includes a fixed plate (211) fixed on the base (1) and the The fixed plate (211) is slidably connected to the sliding plate (212). 10 . The foundation pit measuring device according to claim 9 , characterized in that: the end of the sliding plate ( 212 ) away from the measuring plate ( 33 ) is fixedly provided with lifting lugs ( 213 ). 11 .

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