Foundation pit deformation monitoring device based on close-range photogrammetry

Abstract

The utility model discloses a foundation pit deformation monitoring device based on close-range photogrammetry, which comprises a measuring mechanism, the measuring mechanism comprises a driving motor, the outer wall of the driving motor is rotatably connected with a driving gear, the outer wall of the driving motor is fixedly connected with a fixed plate, one side of the fixed plate is slidably connected with a sliding block, and the sliding block is fixedly connected with the driving gear. The outer wall of the driving gear is rotationally connected with the upper surface of a sliding block, one end of the sliding block is fixedly connected with a sliding mounting opening, the inner wall of the sliding mounting opening is fixedly connected with a mounting block, and when the rack is fixed by a limiting clamping piece and cannot ascend, the rack cannot be meshed with the driving gear, and teeth are staggered; and when the teeth of the sliding buckle are pressed in the tooth positions of the reset teeth and the rack is recovered to rise, the teeth are just engaged with the tooth positions of the driving gear, so that pit walls with different distances away from the two sides of the installation reference point can be detected at the same time, errors occurring in the measurement process of the irregular surfaces of the pit walls are reduced, and the applicability of the equipment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of foundation pit measurement, in particular to a foundation pit deformation monitoring device based on close-range photogrammetry. Background Art

[0002] At present, with the development of urban high-rise buildings, subways and major municipal engineering construction, more and more deep foundation pit projects are emerging. The excavation of deep foundation pits will cause deformation of the surrounding soil, which will affect the foundation pit retaining structure and the environment. In serious cases, it will affect the normal use of the structure and easily cause casualties and financial losses. Therefore, monitoring of foundation pit deformation is particularly important.

[0003] The existing automated monitoring technology for foundation pit deformation monitoring devices mainly uses automated instruments and sensors for monitoring, such as vibrating-string displacement meters, infrared laser scanners, fiber grating sensors, etc. These instruments and sensors can automatically collect data in real time and transmit the data to the computer system for analysis and processing via wireless transmission. The automated monitoring technology is efficient, real-time, and automated, and can greatly improve monitoring efficiency and accuracy.

[0004] During the use of the foundation pit deformation monitoring device of the existing technology, due to the uneven shape of the wall of the foundation pit, the width of the pit wall at the same height from the installation reference points on both sides of the equipment will be different. Therefore, the position of the installation reference point of the measuring equipment will be different each time, which will lead to inaccurate measurement results. The error will accumulate with the transmission of the measurement. When the width of the same horizontal plane is different, this error transmission will be more obvious, resulting in inaccurate final measurement results, seriously affecting the measurement results and delaying the measurement process. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] (I) In view of the shortcomings of the prior art, the utility model provides a foundation pit deformation monitoring device based on close-range photogrammetry, which has the advantages of measuring different widths at the same height, and solves the problem of inaccurate measurement results.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned goal of not only solving the problem of inaccurate measurement results but also ensuring the purpose of simultaneous measurement, the utility model provides the following technical solutions: a foundation pit deformation monitoring device based on close-range photogrammetry, comprising a measuring mechanism, the measuring mechanism comprising a driving motor, the outer wall of the driving motor is rotatably connected to a driving gear, the outer wall of the driving motor is fixedly connected to a fixed plate, one side of the fixed plate is slidably connected to a sliding block, the outer wall of the driving gear is rotatably connected to the upper surface of the sliding block, and one end of the sliding block is fixedly connected to a sliding mounting port.

[0009] As a preferred solution of the foundation pit deformation monitoring device based on close-range photogrammetry described in the utility model, the inner wall of the sliding mounting opening is fixedly connected with a mounting block, and the outer wall of the mounting block is rotatably connected with an adjustment frame.

[0010] As a preferred solution of the foundation pit deformation monitoring device based on close-range photogrammetry of the utility model, the inner wall of the adjustment frame is rotatably connected with a measuring plate, and the outer wall of the measuring plate is fixedly connected with a probe.

[0011] As a preferred solution of the foundation pit deformation monitoring device based on close-range photogrammetry described in the utility model, the inner wall of the sliding block is rotatably connected to a limit card, the outer wall of the limit card is provided with an adjustment spring, and the outer wall of the limit card is slidably connected to a sliding buckle.

[0012] As a preferred solution of the foundation pit deformation monitoring device based on close-range photogrammetry described in the utility model, a return spring is provided on the outer wall of the sliding buckle, a rack is fixedly connected to the upper surface of the sliding buckle, and the outer wall of the rack is meshed with the outer wall of the driving gear.

[0013] As a preferred solution of the foundation pit deformation monitoring device based on close-range photogrammetry described in the utility model, the inner wall of the sliding block is slidably connected with a top column plate, the outer wall of the top column plate is slidably connected with the outer wall of the limit card, the outer wall of the top column plate is provided with two reset springs, and the upper surface of the top column plate is fixedly connected with reset teeth.

[0014] Compared with the known prior art, the technical solution provided by the utility model has the following beneficial effects:

[0015] 1. The driving gear rotates to drive the racks on both sides to move outward. When the probe on one side touches the pit wall and the probe on the other side has not yet touched it, the driving gear is still rotating to squeeze the rack on the side that has touched the pit wall down. When the rack is fixed by the limit card and cannot rise, it cannot mesh with the driving gear, and the teeth are misaligned. When the teeth of the sliding buckle are pressed in the tooth position of the reset teeth, when the rack resumes rising, the teeth are just meshed with the teeth of the driving gear, which is convenient for reuse. It plays a role in simultaneously detecting the pit wall measurements at different distances on both sides of the installation reference point, reducing the errors in the measurement process of the irregular surface of the pit wall and increasing the applicability of the equipment.

[0016] 2. The output end of the driving motor drives the driving gear to rotate, so that the two sliding blocks installed between the fixed plates move forward and backward. The setting of the sliding installation port plays a role in quickly installing the measuring plate. The outer wall of the mounting block slides with the inner wall of the sliding installation port and is fixed by bolts, which is convenient for replacement and maintenance, improves the use efficiency, and increases the usability of the equipment. The height of the measuring plate is adjusted by turning the knob on the adjustment frame so that the measuring plates on both sides are at the same level to reduce measurement errors. The setting of the probe reduces damage to the pit wall when it contacts the pit wall, and the measuring point is retained for multiple measurements. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a three-dimensional overall structural schematic diagram of the utility model;

[0019] Figure 2 It is a structural schematic diagram of the measuring mechanism of the utility model;

[0020] Figure 3 This is a schematic diagram of the structure of the sliding card position of the utility model;

[0021] Figure 4 It is a schematic diagram of the structure of the supporting plate of the utility model.

[0022] In the figure: 100, measuring mechanism; 101, driving motor; 102, driving gear; 103, fixing plate; 104, sliding block; 105, sliding mounting port; 106, mounting block; 107, adjusting frame; 108, measuring plate; 109, probe; 110, limit card; 111, adjusting spring; 112, sliding buckle; 113, reset spring 1; 114, rack; 115, top column plate; 116, reset spring 2; 117, reset tooth. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model is further described below in conjunction with embodiments.

[0025] Example 1

[0026] Reference Figure 1-2 , which is the first embodiment of the utility model, provides a foundation pit deformation monitoring device based on close-range photogrammetry, the foundation pit deformation monitoring device based on close-range photogrammetry includes a measuring mechanism 100, the measuring mechanism 100 includes a driving motor 101, the outer wall of the driving motor 101 is rotatably connected to a driving gear 102, the outer wall of the driving motor 101 is fixedly connected to a fixing plate 103, the inner wall of the fixing plate 103 is sleeved on the outer wall of the driving motor 101, the output end of the driving motor 101 drives the driving gear 102 to rotate, one side of the fixing plate 103 is slidably connected to a sliding block 104, the outer wall of the driving gear 102 is rotatably connected to the upper surface of the sliding block 104, the outer wall of the fixing plate 103 and the inner wall sliding track of the sliding block 104 slide, there are two sliding blocks 104, which move one after the other under the drive of the driving gear 102, one end of the sliding block 104 is fixedly connected to a sliding installation port 105, and the setting of the sliding installation port 105 plays a role in quickly installing the measuring plate.

[0027] The inner wall of the sliding mounting opening 105 is fixedly connected with a mounting block 106, and the outer wall of the mounting block 106 is rotatably connected with an adjustment frame 107. The outer wall of the mounting block 106 slidably cooperates with the inner wall of the sliding mounting opening 105 and is fixed by bolts for easy replacement and maintenance.

[0028] The inner wall of the adjustment frame 107 is rotatably connected to a measuring plate 108, and the outer wall of the measuring plate 108 is fixedly connected to a probe 109. The height of the adjustment frame 107 is adjusted by a knob in the middle, so that the measuring plates 108 on both sides are at the same level to reduce measurement errors. Through the setting of the probe 109, damage to the pit wall is reduced when it contacts the pit wall, and the measuring point is retained to facilitate multiple measurements.

[0029] During use, the output end of the driving motor 101 drives the driving gear 102 to rotate, so that the two sliding blocks 104 installed between the fixed plates 103 move forward and backward. The setting of the sliding mounting opening 105 plays a role in quickly installing the measuring plate. The outer wall of the mounting block 106 slides with the inner wall of the sliding mounting opening 105 and is fixed by bolts, which is convenient for replacement and maintenance and improves the use efficiency. The height of the measuring plate 108 is adjusted by rotating the knob on the adjustment frame 107 so that the measuring plates 108 on both sides are at the same horizontal height, reducing the measurement error. The setting of the probe 109 reduces the damage to the pit wall when it contacts the pit wall, and retains the measuring point for multiple measurements.

[0030] Example 2

[0031] Reference Figure 1-4 , which is the second embodiment of the utility model, provides a foundation pit deformation monitoring device based on close-range photogrammetry. This foundation pit deformation monitoring device based on close-range photogrammetry includes an inner wall of a sliding block 104 that is rotatably connected to a limit card 110. The outer wall of the limit card 110 is provided with an adjusting spring 111. The outer wall of the limit card 110 is slidably connected to a sliding buckle 112. By setting the adjusting spring 111, one side of the limit card 110 is fitted into the buckle position of the sliding buckle 112. When the sliding buckle 112 slides downward, the locking position on the sliding buckle 112 will push open the limit card 110 affected by the adjusting spring 111. When the locking position moves to the bottom of the limit card 110, the bottom of the limit card 110 is pressed against the locking position of the sliding buckle 112 through the influence of the adjusting spring 111, so that it cannot move up.

[0032] The outer wall of the sliding buckle 112 is provided with a return spring 113, and the upper surface of the sliding buckle 112 is fixedly connected with a rack 114, the outer wall of the rack 114 meshes with the outer wall of the driving gear 102, and the inner wall of the rack 114 is sleeved on the rack 114, and the return spring 113 is sleeved on the outer wall of the sliding buckle 112. When the driving gear 102 rotates, the racks 114 on both sides move outward. When the probe 109 on one side contacts the pit wall and the probe 109 on the other side has not yet contacted, the driving gear 102 is still rotating to squeeze the rack 114 on the side that has contacted the pit wall. When the rack 114 is fixed by the limit card 110 and cannot rise, since the teeth of the rack 114 and the driving gear 102 are both arc teeth on one side, they cannot mesh, and the misalignment of the teeth will not affect the movement of the other side driven by the driving gear 102.

[0033] The inner wall of the sliding block 104 is slidably connected with a top column plate 115, and the outer wall of the top column plate 115 is slidably connected with the outer wall of the limit card 110. The outer wall of the top column plate 115 is provided with a reset spring 116, and the upper surface of the top column plate 115 is fixedly connected with a reset tooth 117. When the equipment is recovered after measuring the foundation pit, the output end of the driving motor 101 is used to rotate the driving gear 102 counterclockwise. The other side of the teeth of the driving gear 102 and the rack 114 are straight edges, so that they can be rotated to engage with the rack 114 and be recovered. When the teeth of 102 rotate and engage with the reset teeth 117, since the reset teeth 117 is an independent tooth and is higher than the rack 114, it moves downward to drive the top block on the top column plate 115 to push the limit card 110. At this time, the sliding buckle 112 fixed by the limit card 110 is restored under the action of the reset spring 113. The reset spring 113 is made of nylon. Since the teeth of the sliding buckle 112 are pressed in the tooth position of the reset teeth 117, when the rack 114 resumes its rise, the teeth are just engaged with the teeth position of the drive gear 102, which is convenient for reuse.

[0034] During use, the driving gear 102 rotates to drive the racks 114 on both sides to move outward. When the probe 109 on one side contacts the pit wall and the probe 109 on the other side has not yet contacted it, the driving gear 102 is still rotating to squeeze the rack 114 on the side that has already contacted the pit wall. When the rack 114 is fixed by the limit card 110 and cannot rise, it cannot mesh with the driving gear 102, and the teeth are misaligned. When the teeth of the sliding buckle 112 are pressed in the tooth position of the reset teeth 117, when the rack 114 resumes rising, the teeth just mesh with the teeth position of the driving gear 102, which is convenient for reuse, and plays a role in simultaneously detecting the pit wall measurements at different distances on both sides of the installation reference point, reducing the errors occurring during the measurement of the irregular surface of the pit wall, and increasing the applicability of the equipment.

[0035] The remaining structure is the same as that of Example 1.

[0036] 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 aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A foundation pit deformation monitoring device based on close-range photogrammetry, comprising a measuring mechanism (100), characterized in that: The measuring mechanism (100) comprises a driving motor (101), the outer wall of the driving motor (101) is rotatably connected to a driving gear (102), the outer wall of the driving motor (101) is fixedly connected to a fixing plate (103), one side of the fixing plate (103) is slidably connected to a sliding block (104), the outer wall of the driving gear (102) is rotatably connected to the upper surface of the sliding block (104), and one end of the sliding block (104) is fixedly connected to a sliding mounting opening (105).

2. The foundation pit deformation monitoring device based on close-range photogrammetry according to claim 1 is characterized in that: The inner wall of the sliding installation opening (105) is fixedly connected to a mounting block (106), and the outer wall of the mounting block (106) is rotatably connected to an adjustment frame (107).

3. The foundation pit deformation monitoring device based on close-range photogrammetry according to claim 2 is characterized in that: The inner wall of the adjustment frame (107) is rotatably connected to a measuring plate (108), and the outer wall of the measuring plate (108) is fixedly connected to a probe (109).

4. The foundation pit deformation monitoring device based on close-range photogrammetry according to claim 1 is characterized in that: The inner wall of the sliding block (104) is rotatably connected to a limit card (110), the outer wall of the limit card (110) is provided with an adjustment spring (111), and the outer wall of the limit card (110) is slidably connected to a sliding buckle (112).

5. The foundation pit deformation monitoring device based on close-range photogrammetry according to claim 4 is characterized in that: A return spring (113) is provided on the outer wall of the sliding buckle (112), and a rack (114) is fixedly connected to the upper surface of the sliding buckle (112), and the outer wall of the rack (114) is meshed with the outer wall of the driving gear (102).

6. The foundation pit deformation monitoring device based on close-range photogrammetry according to claim 1 is characterized in that: The inner wall of the sliding block (104) is slidably connected to a top column plate (115), the outer wall of the top column plate (115) is slidably connected to the outer wall of the limit card (110), the outer wall of the top column plate (115) is provided with a second reset spring (116), and the upper surface of the top column plate (115) is fixedly connected to a reset tooth (117).

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