CN212427048U - Foundation compactness detection device - Google Patents
Foundation compactness detection device Download PDFInfo
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- CN212427048U CN212427048U CN202021050681.XU CN202021050681U CN212427048U CN 212427048 U CN212427048 U CN 212427048U CN 202021050681 U CN202021050681 U CN 202021050681U CN 212427048 U CN212427048 U CN 212427048U
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Abstract
The utility model discloses a foundation compactness detection device, including the detection device body, the detection device body includes detection case, sets up at the pick-up plate of detection case one side, laser probe on the pick-up plate and the dead lever that is located the pick-up plate front side, and the pick-up plate passes through conduction line and detection case electric connection, one side of detection case is equipped with the protecting box, and pick-up plate and dead lever all are located the protecting box, and the protecting box comprises two installation shells, and one side that two installation shells are close to each other all establishes to the opening, one side movable contact that two installation shells are close to each other. The utility model relates to a rationally, convenient operation is convenient for shelter from the protection and fix to pick-up plate and dead lever fast, avoids appearing shaking the phenomenon that causes pick-up plate and laser probe to damage because of the pick-up plate at the in-process that removes, can avoid the most advanced of dead lever to bruise personnel's phenomenon simultaneously, and the dead lever is in fold condition for the total volume reduces, and portable is favorable to the use.
Description
Technical Field
The utility model relates to a ground compactness check out test set technical field especially relates to a ground compactness detection device.
Background
The highway construction industry in China is developing vigorously, but the compaction condition of the foundation is difficult to guarantee, the rapid mechanical construction technology research and application of the cement soil roadbed of the heavy traffic highway, the Jinshi sections k38+ 100-k 58+100 earthwork filling, and the earthwork filling 420 ten thousand meters are carried out3The method is mainly characterized in that on the premise of researching measures such as dynamic compaction and impact rolling of a roadbed, the number of layers of doped dust of the roadbed is optimized, the roadbed is mechanized, standardized construction is carried out to ensure the filling construction quality of the roadbed, the compactness is a reliable index for detecting a foundation, and for foundation soil, the compactness refers to the ratio of the dry density actually achieved by a construction site to the maximum dry density obtained by an indoor standard compaction test; for asphalt pavement, the compactness refers to the ratio of the density actually achieved on site to the indoor standard density, and the traditional compactness detection method can be roughly divided into two types: static detection and dynamic detection, the common static detection method is: the sand filling method, the cutting ring method, the nuclear density hygrometer method and the drop hammer frequency spectrum foundation compactness rapid measuring instrument are searched and applied for the number: 201720360027.0, discloses a foundation compactness testing device, including the detection case, the back fixedly connected with wire of detection case, the one end fixedly connected with pick-up plate of detection case is kept away from to the wire, the front swing joint of pick-up plate has laser probe, the bottom fixedly connected with battery of detection case inner wall, the top fixedly connected with data memory of battery, the top fixedly connected with compactness detector of data memory, the top fixedly connected with laser controller of compactness detectorThe top fixedly connected with alarm of laser controller, the bottom of detection box inner wall just is located the right side fixedly connected with printer of battery, the top fixedly connected with controller of printer through laser probe, battery, data memory, compactness detector and laser controller's cooperation, has solved that traditional compactness detection method detects length consuming time and inefficiency problem.
Above-mentioned patent still has some inadequacies, it is not convenient for carry out quick fixation and shelter from the protection to pick-up plate and laser probe, in the above-mentioned patent, the pick-up plate only connects through the wire, it causes the pick-up plate to rock and bump external phenomenon easily at the in-process that removes ground compactness detection device, and then causes pick-up plate and laser probe's damage, and be not convenient for fold fixed and shelter from the dead lever, the length of dead lever is longer, its bottom is the toper structure, the phenomenon that its pointed end bruised personnel appears easily at the in-process that removes, can not satisfy the user demand, therefore we have proposed a ground compactness detection device and are used for solving above-mentioned problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the defects existing in the prior art and providing a foundation compactness detection device.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a foundation compactness detection device comprises a detection device body, wherein the detection device body comprises a detection box, a detection plate arranged on one side of the detection box, a laser probe on the detection plate and a fixed rod positioned on the front side of the detection plate, the detection plate is electrically connected with the detection box through a conducting wire, one side of the detection box is provided with a protection box, the detection plate and the fixed rod are both positioned in the protection box, the protection box consists of two installation shells, one sides, close to each other, of the two installation shells are both provided with openings, one sides, close to each other, of the two installation shells are in movable contact, one side, far away from the other installation shell, of one of the two installation shells is fixedly installed with one side of the detection box, the inner walls of the tops of the two installation shells are both provided with placing holes, one sides, close to each other, of the two placing holes are both provided with openings, the conducting wire is positioned in the two placing holes, the first rectangular groove is communicated with one of the two placing holes, a second rectangular groove is arranged on the inner wall of the top part of one mounting shell and is communicated with the other placing hole, two positioning rods are fixedly arranged on the inner wall of the top part of the first rectangular groove, the bottoms of the two positioning rods are fixedly provided with the same transverse plate, a moving plate is sleeved on the two positioning rods in a sliding manner, the right side of the moving plate extends into the second rectangular groove, a plurality of springs are fixedly arranged between the bottom of the moving plate and the top of the transverse plate, a T-shaped push rod is fixedly arranged on the top of the moving plate, the top of the T-shaped push rod extends to the upper part of the other mounting shell, a rectangular clamping groove is arranged on the inner wall of the top part of the second rectangular groove, a clamping block is fixedly arranged on one side of the top part of the moving plate, the top part of the clamping block extends, the utility model discloses a detection device, including detection plate, dead lever, pick-up plate, T-shaped iron inserted bar, fixed pole, two first square holes, T-shaped iron inserted bar, fixed pole, the dead lever is located between two installation pieces, the below of detection plate is equipped with the bull stick, two installation pieces all rotate the cover and establish on the bull stick, the dead lever is fixed the cover and is established on the bull stick, two first square holes have been seted up to one side of dead lever, the activity card is equipped with T-shaped iron inserted bar in one first square hole in two first square holes, another first square hole and T-shaped iron inserted bar looks adaptation, outside one side of.
Preferably, another installation shell is close to one side bottom fixed mounting of an installation shell has the fixed plate, and a third rectangular channel has been seted up to one side bottom that an installation shell is close to another installation shell, and one side that another installation shell was kept away from to the fixed plate extends to the third rectangular channel in, the outside of fixed plate and the inner wall movable contact in third rectangular channel.
Preferably, a rectangular hole is formed in the inner wall of the top of the first rectangular groove, and the inner wall of the rectangular hole is in sliding connection with the outer side of the T-shaped push rod.
Preferably, a circular hole is formed in one side of the mounting block, a bearing is fixedly sleeved in the circular hole, and an inner ring of the bearing is fixedly sleeved with the outer side of the rotating rod.
Preferably, two magnets are fixedly mounted on the right side of one mounting block on the right side, and the right side of each magnet is adsorbed to the inner wall of one side of the T-shaped iron insertion rod.
Preferably, a second square hole is formed in one side, close to each other, of each of the two mounting blocks, and the inner wall of the second square hole is in movable contact with the outer side of the T-shaped iron insertion rod.
Preferably, the top of the detection plate is in movable contact with the inner wall of the top of the protection box, the bottom end of the fixed rod is in movable contact with the inner wall of the bottom of the protection box, the rear side of the detection plate is in movable contact with the inner wall of the rear side of the protection box, and the front side of the fixed rod is in movable contact with the inner wall of the front side of the protection box.
Compared with the prior art, the beneficial effects of the utility model are that:
when the detection plate and the fixed rod need to be moved out of the protection box for use, the T-shaped push rod is pressed downwards to drive the movable plate to slide downwards on the two positioning rods and compress the spring, the movable plate drives the fixture block to move out of the rectangular clamping groove, then the T-shaped push rod is pushed leftwards to drive the other installation shell to move leftwards and separate from the one installation shell, the other installation shell drives the fixed plate to move leftwards and gradually move out of the third rectangular groove, so that the detection plate and the fixed rod can be taken out of the protection shell, then the T-shaped pull rod is pulled rightwards to move out of the first square hole, and then the fixed rod is rotated forwards to a vertical state, inserting a T-shaped iron insertion rod into two second square holes and the other first square hole to fix the fixed rod, pulling the T-shaped iron pull rod to move out of the other first square hole right again when the fixed rod needs to be folded, then rotating the fixed rod backwards to the front side of the detection plate, inserting the T-shaped iron pull rod into one first square hole again to fix the fixed rod, then placing the fixed rod and the detection plate in a protection box, pushing the other installation shell right, driving the movable plate to move into a second rectangular groove while the other installation shell moves, when the other installation shell is contacted with the one installation shell, then releasing the pressing force on the T-shaped push rod, at the moment, the elastic force of the spring drives the fixture block to move into the rectangular clamping groove through driving the movable plate, so that the other installation shell is fixed, and the detection plate and the fixed rod are both fixed in the protection box, the guard box shields the detection plate and the fixed rod.
The utility model relates to a rationally, convenient operation is convenient for shelter from the protection and fix to pick-up plate and dead lever fast, avoids appearing shaking the phenomenon that causes pick-up plate and laser probe to damage because of the pick-up plate at the in-process that removes, can avoid the most advanced of dead lever to bruise personnel's phenomenon simultaneously, and the dead lever is in fold condition for the total volume reduces, and portable is favorable to the use.
Drawings
Fig. 1 is a schematic view of a sectional structure of a detection board and a fixing rod of a foundation compactness detection device in a protection box according to the present invention;
FIG. 2 is an enlarged schematic view of portion A of FIG. 1;
fig. 3 is a schematic cross-sectional structural view of a detection board and a fixing rod of the foundation compactness detection device provided by the present invention located outside the protection box;
fig. 4 is an enlarged structural view of a portion B in fig. 3.
In the figure: the detection device comprises a detection box 1, a mounting shell 2, a detection plate 3, a fixing rod 4, a placing hole 5, a first rectangular groove 6, a moving plate 7, a positioning rod 8, a transverse plate 9, a spring 10, a second rectangular groove 11, a rectangular clamping groove 12, a clamping block 13, a mounting block 14, a first square hole 15, a iron insertion rod 16T-shaped and a rotating rod 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
Referring to fig. 1-4, a foundation compactness detecting device, comprising a detecting device body, the detecting device body comprises a detecting box 1, a detecting plate 3 arranged at one side of the detecting box 1, a laser probe on the detecting plate 3 and a fixing rod 4 arranged at the front side of the detecting plate 3, the detecting plate 3 is electrically connected with the detecting box 1 through a conducting wire, one side of the detecting box 1 is provided with a guard box, the detecting plate 3 and the fixing rod 4 are both arranged in the guard box, the guard box is composed of two mounting shells 2, one sides of the two mounting shells 2 close to each other are both provided with openings, one sides of the two mounting shells 2 close to each other are in movable contact, one side of one of the two mounting shells 2 far away from the other mounting shell 2 is fixedly mounted with one side of the detecting box 1, the inner walls at the tops of the two mounting shells 2 are both provided with placing holes 5, one side of the two placing holes 5, the conducting wire is positioned in the two placing holes 5, the inner wall of the top part of the other one of the two installing shells 2 is provided with a first rectangular groove 6, the first rectangular groove 6 is communicated with one placing hole 5 of the two placing holes 5, the inner wall of the top part of the one installing shell 2 is provided with a second rectangular groove 11, the second rectangular groove 11 is communicated with the other placing hole 5, the inner wall of the top part of the first rectangular groove 6 is fixedly provided with two positioning rods 8, the bottoms of the two positioning rods 8 are fixedly provided with a same transverse plate 9, the two positioning rods 8 are slidably sleeved with a same movable plate 7, the right side of the movable plate 7 extends into the second rectangular groove 11, a plurality of springs 10 are fixedly arranged between the bottom of the movable plate 7 and the top part of the transverse plate 9, the top part of the movable plate 7 is fixedly provided with a T-shaped push rod, and the top part of the T, a rectangular clamping groove 12 is formed in the inner wall of the top of the second rectangular groove 11, a clamping block 13 is fixedly mounted on one side of the top of the moving plate 7, the top of the clamping block 13 extends into the rectangular clamping groove 12, the clamping block 13 is clamped with the rectangular clamping groove 12, a lead is located on the rear side of the moving plate 7, two mounting blocks 14 are fixedly mounted at the bottom of the front side of the detecting plate 3, the fixed rod 4 is located between the two mounting blocks 14, a rotating rod 17 is arranged below the detecting plate 3, the two mounting blocks 14 are rotatably sleeved on the rotating rod 17, the fixed rod 4 is fixedly sleeved on the rotating rod 17, two first square holes 15 are formed in one side of the fixed rod 4, a T-shaped iron inserting rod 16 is movably clamped in one first square hole 15 of the two first square holes 15, the other first square hole 15 is matched with the T-shaped iron inserting rod 16, one side of the T-shaped iron inserting rod 16 extends out of, outside T shape iron inserted bar 16's one end extended to another installation piece 14, one side inner wall of T shape iron inserted bar 16 and two installation pieces 14 in lie in the right side of an installation piece 14 magnetism inhale fixedly, the utility model relates to a rationally, convenient operation, it is fixed to be convenient for shelter from the protection fast to pick-up plate 3 and dead lever 4, avoid appearing shaking the phenomenon that causes pick-up plate 3 and laser probe to damage because of pick-up plate 3 at the in-process that removes, can avoid dead lever 4's pointed end to bump personnel's phenomenon simultaneously, and dead lever 4 is in fold condition for the bulk volume reduces, and portable is favorable to the use.
In the utility model, a fixed plate is fixedly arranged at the bottom of one side of another installation shell 2 close to the installation shell 2, a third rectangular groove is arranged at the bottom of one side of the installation shell 2 close to the other installation shell 2, one side of the fixed plate far away from the other installation shell 2 extends into the third rectangular groove, the outer side of the fixed plate is movably contacted with the inner wall of the third rectangular groove, a rectangular hole is arranged on the inner wall of the top of the first rectangular groove 6, the inner wall of the rectangular hole is in sliding connection with the outer side of the T-shaped push rod, a circular hole is arranged at one side of the installation block 14, a bearing is fixedly sleeved in the circular hole, the inner ring of the bearing is fixedly sleeved with the outer side of the rotating rod 17, two magnets are fixedly arranged at the right side of one installation block 14 at the right side, the right side of the magnet is adsorbed with the inner wall of one side of, the inner wall in second square hole and the outside movable contact of T shape iron inserted bar 16, the top of pick-up plate 3 and the top inner wall movable contact of protective housing, the bottom of dead lever 4 and the bottom inner wall movable contact of protective housing, the rear side of pick-up plate 3 and the rear side inner wall movable contact of protective housing, the front side of dead lever 4 and the front side inner wall movable contact of protective housing, the utility model relates to a rationally, convenient operation, be convenient for shelter from protection and fixed to pick-up plate 3 and dead lever 4 fast, avoid appearing shaking the phenomenon that causes pick-up plate 3 and laser probe to damage because of pick-up plate 3 in the in-process that removes, can avoid the most advanced of dead lever 4 to bump personnel's phenomenon simultaneously, and dead lever 4 is in fold condition for the total volume reduces, and convenient to carry is favorable to using.
The working principle is as follows: when the detection device is used, the detection plate 3, the laser probe and the fixing rod 4 can be shielded, protected and fixed by the protection box, so that the phenomenon that the detection plate 3 and the laser probe are damaged due to shaking of the detection plate 3 in the moving process is avoided, and meanwhile, the phenomenon that personnel are injured by the tip end of the fixing rod 4 can be avoided;
when the detection plate 3 and the fixed rod 4 need to be moved out of the protective box for use, the T-shaped push rod is pressed downwards, the T-shaped push rod drives the moving plate 7 to slide downwards on the two positioning rods 8 and compress the spring 10, the moving plate 7 moves downwards and simultaneously drives the fixture block 13 to move out of the rectangular clamping groove 12, so that the fixation of the other installation shell 2 is released, then the T-shaped push rod is pushed leftwards, the T-shaped push rod drives the other installation shell 2 to move leftwards, the other installation shell 2 drives the fixed plate to move leftwards and gradually move out of the third rectangular groove, the other installation shell 2 gradually separates from one installation shell 2 while moving, the detection plate 3 and the fixed rod 4 can be taken out of the protective shell, then the T-shaped iron pull rod 16 is pulled rightwards, the T-shaped iron pull rod 16 gradually separates from the magnet while moving, the T-shaped iron pull rod 16 gradually moves out of the first square hole 15 while moving, then the fixing of the fixing rod 4 is released, the fixing rod 4 is rotated forwards, the fixing rod 4 drives the rotating rod 17 to rotate, when the fixing rod 4 rotates to be in a vertical state, another first square hole 15 is aligned with the two second square holes, then the T-shaped iron insertion rod 16 is inserted into the two second square holes and the other first square hole 15, the fixing rod 4 is further fixed, and at the moment, the fixing rod 4 can support the detection plate 3;
when the fixing rod 4 needs to be folded, the T-shaped iron pull rod 16 is pulled rightwards again to move out of the other first square hole 15, then the fixing rod 4 is rotated backwards, the fixing rod 4 is located on the front side of the detection plate 3, the T-shaped iron pull rod 16 is inserted into the one first square hole 15 again, then the fixing rod 4 is fixed, the total volume of the fixing rod 4 and the detection plate 3 is reduced, then the fixing rod 4 and the detection plate 3 are placed in a protection box, the fixing plate is aligned with the third rectangular groove, the other mounting shell 2 is pushed rightwards, the moving plate 7 is driven to move into the second rectangular groove 11 while the other mounting shell 2 moves, when the other mounting shell 2 is in contact with one mounting shell 2, the pressing force on the T-shaped push rod is released, at the moment, the spring 10 in the compression state of the moving plate is reset, the spring 10 drives the spring 7 to, the movable plate 7 drives the clamping block 13 to move into the rectangular clamping groove 12, the clamping block 13 is clamped with the rectangular clamping groove 12, the other mounting shell 2 is further fixed, the detection plate 3 and the fixing rod 4 are both fixed in the protection box, and the protection box protects and shields the detection plate 3 and the fixing rod 4.
In the description of the present application, it should be further noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may include, for example, a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, a connection through an intermediate medium, and a connection between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to specific circumstances.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (7)
1. A foundation compactness detection device comprises a detection device body, wherein the detection device body comprises a detection box (1), a detection plate (3) arranged on one side of the detection box (1), a laser probe on the detection plate (3) and a fixing rod (4) positioned on the front side of the detection plate (3), the detection plate (3) is electrically connected with the detection box (1) through a conducting wire, the detection device is characterized in that one side of the detection box (1) is provided with a protection box, the detection plate (3) and the fixing rod (4) are both positioned in the protection box, the protection box is composed of two installation shells (2), one sides of the two installation shells (2) close to each other are both provided with openings, one sides of the two installation shells (2) close to each other are in movable contact, one side of one installation shell (2) far away from the other installation shell (2) is fixedly installed with one side of the detection box (1), placing holes (5) are formed in the inner walls of the tops of the two mounting shells (2), one side, close to each other, of the two placing holes (5) is provided with an opening, a conducting wire is positioned in the two placing holes (5), a first rectangular groove (6) is formed in the inner wall of the top of the other mounting shell (2) of the two mounting shells (2), the first rectangular groove (6) is communicated with one placing hole (5) of the two placing holes (5), a second rectangular groove (11) is formed in the inner wall of the top of the one mounting shell (2), the second rectangular groove (11) is communicated with the other placing hole (5), two positioning rods (8) are fixedly mounted on the inner wall of the top of the first rectangular groove (6), the same transverse plate (9) is fixedly mounted at the bottoms of the two positioning rods (8), a same moving plate (7) is slidably sleeved on the two positioning rods (8), and the right side of the moving plate (7) extends into the second rectangular groove (11), a plurality of springs (10) are fixedly arranged between the bottom of the moving plate (7) and the top of the transverse plate (9), a T-shaped push rod is fixedly arranged at the top of the moving plate (7), the top of the T-shaped push rod extends to the upper part of the other mounting shell (2), a rectangular clamping groove (12) is formed in the inner wall of the top of the second rectangular groove (11), a clamping block (13) is fixedly arranged on one side of the top of the moving plate (7), the top of the clamping block (13) extends into the rectangular clamping groove (12), the clamping block (13) is clamped with the rectangular clamping groove (12), a lead is positioned on the rear side of the moving plate (7), two mounting blocks (14) are fixedly arranged at the bottom of the front side of the detection plate (3), the fixed rod (4) is positioned between the two mounting blocks (14), a rotating rod (17) is arranged below the detection plate (3), the two mounting blocks (14), the fixed cover of dead lever (4) is established on bull stick (17), two first square holes (15) have been seted up to one side of dead lever (4), movable clamping is equipped with T shape iron inserted bar (16) in one first square hole (15) in two first square holes (15), another first square hole (15) and T shape iron inserted bar (16) looks adaptation, one side of T shape iron inserted bar (16) extends to outside one installation piece (14) in two installation pieces (14), the one end of T shape iron inserted bar (16) extends to outside another installation piece (14), the right side magnetism that lies in one installation piece (14) right side in one side inner wall and two installation pieces (14) of T shape iron inserted bar (16) is fixed.
2. The foundation compactness detection device according to claim 1, wherein a fixing plate is fixedly mounted at the bottom of one side of the other mounting shell (2) close to the one mounting shell (2), a third rectangular groove is formed at the bottom of one side of the one mounting shell (2) close to the other mounting shell (2), one side of the fixing plate far away from the other mounting shell (2) extends into the third rectangular groove, and the outer side of the fixing plate is in movable contact with the inner wall of the third rectangular groove.
3. The foundation compactness detection device according to claim 1, wherein a rectangular hole is formed in the inner wall of the top of the first rectangular groove (6), and the inner wall of the rectangular hole is slidably connected with the outer side of the T-shaped push rod.
4. The foundation compactness detection device according to claim 1, wherein a circular hole is formed in one side of the mounting block (14), a bearing is fixedly sleeved in the circular hole, and an inner ring of the bearing is fixedly sleeved on the outer side of the rotating rod (17).
5. The foundation compactness detecting device according to claim 1, wherein two magnets are fixedly mounted on the right side of one mounting block (14) on the right side, and the right side of each magnet is adsorbed to one inner wall of the T-shaped iron inserted rod (16).
6. The foundation compactness detection device according to claim 1, wherein a second square hole is formed in each side, close to each other, of each of the two mounting blocks (14), and the inner wall of each second square hole is in movable contact with the outer side of the T-shaped iron insertion rod (16).
7. A ground compaction test device according to claim 1 wherein the top of the test plate (3) is in movable contact with the inner wall of the top of the shelter, the bottom end of the fixing rod (4) is in movable contact with the inner wall of the bottom of the shelter, the rear side of the test plate (3) is in movable contact with the inner wall of the rear side of the shelter and the front side of the fixing rod (4) is in movable contact with the inner wall of the front side of the shelter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021050681.XU CN212427048U (en) | 2020-06-10 | 2020-06-10 | Foundation compactness detection device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021050681.XU CN212427048U (en) | 2020-06-10 | 2020-06-10 | Foundation compactness detection device |
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| CN212427048U true CN212427048U (en) | 2021-01-29 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701732A (en) * | 2021-08-31 | 2021-11-26 | 山东正元建设工程有限责任公司 | Portable foundation pit and side slope gradient control device and control method |
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2020
- 2020-06-10 CN CN202021050681.XU patent/CN212427048U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113701732A (en) * | 2021-08-31 | 2021-11-26 | 山东正元建设工程有限责任公司 | Portable foundation pit and side slope gradient control device and control method |
| CN113701732B (en) * | 2021-08-31 | 2022-07-12 | 山东正元建设工程有限责任公司 | Portable foundation pit and side slope gradient control device and control method |
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