CN222100802U - A soil backfill corner compaction device - Google Patents
A soil backfill corner compaction device Download PDFInfo
- Publication number
- CN222100802U CN222100802U CN202420383365.6U CN202420383365U CN222100802U CN 222100802 U CN222100802 U CN 222100802U CN 202420383365 U CN202420383365 U CN 202420383365U CN 222100802 U CN222100802 U CN 222100802U
- Authority
- CN
- China
- Prior art keywords
- frame
- movable
- steering
- corner
- transmission
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005056 compaction Methods 0.000 title abstract description 18
- 239000002689 soil Substances 0.000 title 1
- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 230000005540 biological transmission Effects 0.000 claims abstract description 42
- 210000000078 claw Anatomy 0.000 claims description 7
- 230000033001 locomotion Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 6
- 230000009471 action Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Landscapes
- Road Paving Machines (AREA)
Abstract
本实用新型涉及土方夯实装置技术领域，具体的是一种土方回填边角夯实装置，本实用新型包括车架，所述车架内安装有夯锤机构，所述车架的底部一侧固定设置有两个移动架，两个所述移动架之间转动设置有传动轴，所述传动轴的两端均固定设置有移动轮，所述车架上远离移动架的一端设置有转向机构，所述转向机构包括固定设置在车架上的套筒，所述套筒内转动设置有转向轴，所述转向轴的顶端固定连接有方向盘，所述转向轴的底端固定设置有转向架，所述转向架内转动设置有转向轮，本实用新型通过设置移动轮和转向机构，能够满足夯实工作中的移动需要，本装置的重量和占地空间都较小，能够保护地基不被压坏，调度起来也非常方便。
The utility model relates to the technical field of earth compaction devices, and specifically to an earth backfill corner compaction device. The utility model comprises a frame, a rammer mechanism is installed in the frame, two mobile frames are fixedly arranged on one side of the bottom of the frame, a transmission shaft is rotatably arranged between the two mobile frames, mobile wheels are fixedly arranged at both ends of the transmission shaft, a steering mechanism is arranged on the end of the frame away from the mobile frame, and the steering mechanism comprises a sleeve fixedly arranged on the frame, a steering shaft is rotatably arranged in the sleeve, a steering wheel is fixedly connected to the top of the steering shaft, a bogie is fixedly arranged at the bottom of the steering shaft, and a steering wheel is rotatably arranged in the bogie. The utility model can meet the movement needs in the compaction work by arranging the mobile wheels and the steering mechanism. The weight and space occupied by the device are small, the foundation can be protected from being crushed, and the dispatching is also very convenient.
Description
Technical Field
The utility model relates to the technical field of earth ramming devices, in particular to an earth backfill corner ramming device.
Background
The earthwork backfill refers to the filling of constructional engineering, and mainly comprises foundation filling, foundation pit (groove) or pipe ditch backfill, indoor terrace backfill, outdoor site backfill leveling and the like. While compaction methods after backfilling earthwork generally include rolling, compacting and vibratory compaction methods and compaction with earth moving tools. For large-area earth-filled projects, rolling and compaction by means of earth-moving tools are often used. For smaller area earth-filled projects, compaction is typically performed using a compaction tool.
Among the related art, chinese patent with patent number CN215052865U proposes "an earth backfill corner ramming device", and the device "includes fixing base and ramming board, the fixing base below is provided with the ramming board, four corner welding on ramming board upper surface have run through the fixing base and extend to the spacing post in the outside, the spring has all been cup jointed to the upper and lower both sides that lie in the fixing base on the spacing post, fixing base lower surface center department bolt fastening has hydraulic cylinder.
Although the above-mentioned technology can realize the compaction of earthwork, it needs to be used together with mobile equipment, but in some engineering environments with limited materials, it is difficult to find mobile equipment matched with the mobile equipment, because the impact force in the compaction process is large, simple mobile equipment is difficult to balance the reaction force in the compaction process, and some large-sized special mobile equipment, such as an excavator, a bulldozer and the like, have great difficulty in scheduling the mobile equipment, and the mobile equipment has great own weight, and easily damage the foundation, so that a compaction device capable of meeting the simple movement requirement is needed.
Disclosure of utility model
The utility model aims to provide an earthwork backfill corner tamping device which is used for solving the problems in the background technology.
The aim of the utility model can be achieved by the following technical scheme:
The utility model provides an earth is backfilled corner and is tamped device, includes the frame, install ram mechanism in the frame, the fixed two removal frames that are provided with in bottom one side of frame, two it is provided with the transmission shaft to rotate between the removal frame, the both ends of transmission shaft are all fixed to be provided with and remove the wheel, the one end that keeps away from the removal frame on the frame is provided with steering mechanism, steering mechanism is including the fixed sleeve that sets up on the frame, the rotation is provided with the steering spindle in the sleeve, the top fixedly connected with steering wheel of steering spindle, the bottom mounting of steering spindle is provided with the bogie, the bogie internal rotation is provided with the steering wheel.
Preferably, a transmission case is fixedly arranged between the two movable frames, the transmission shaft penetrates through the transmission case, a handle is fixedly arranged on one side of the frame, and the handle is located above the movable wheels.
Preferably, the frame is internally and fixedly provided with a chute rod, the chute rod is arranged along the length direction of the frame, and a transmission mechanism is arranged at a position close to the chute rod in the frame.
Preferably, the transmission mechanism comprises a screw rod motor fixedly arranged on the side wall of the frame, a reciprocating screw rod is rotatably arranged in the frame, the screw rod motor is in transmission connection with the reciprocating screw rod, and a sliding block is arranged on the reciprocating screw rod in a transmission manner.
Preferably, the rammer mechanism comprises a movable seat arranged on the chute rod, a pulley is rotatably arranged on the side wall of the movable seat, the movable seat is in sliding connection with the chute rod through the pulley, and a connecting rod is fixedly arranged between the movable seat and the sliding block.
Preferably, the movable seat is fixedly provided with a hydraulic column, the output end of the hydraulic column is downward and is fixedly connected with a mounting plate, the bottom of the mounting plate is slidably provided with a plurality of buffer rods, the bottom of the buffer rods is fixedly connected with a rammer board, a buffer spring is fixedly arranged between the top end of the buffer rods and the inner wall of the mounting plate, and a plurality of limiting rods are arranged between the mounting plate and the movable seat.
Preferably, the frame is provided with supporting mechanisms on two sides of the movable seat, the supporting mechanisms comprise supporting seats arranged on the frame, an electric lifting column is fixedly arranged on the supporting seats, and the output end of the electric lifting column is downward and is fixedly connected with a supporting claw.
The utility model has the beneficial effects that:
1. According to the utility model, by arranging the moving wheels and the steering mechanism, a worker can push the whole device to move, and can perform movable work on a construction site, so that the moving requirement in the tamping work can be met, and by arranging the supporting mechanism, the device can be supported and limited in the tamping work, so that the device is prevented from deviating from the original position, and the impact force in the tamping process is balanced.
2. According to the utility model, the rammer mechanism and the transmission mechanism are arranged, so that the rammer plate can do reciprocating linear motion along the length direction of the frame, further the rammer plate can beat earthwork below the frame back and forth, the compaction effect on the earthwork can be greatly improved, and the compaction range can be enlarged.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to those skilled in the art that other drawings can be obtained according to these drawings without inventive effort;
FIG. 1 is a schematic view of the overall structure of the present utility model;
FIG. 2 is a schematic view of the steering mechanism and support mechanism of the present utility model;
FIG. 3 is an enlarged schematic view of portion A of FIG. 2 in accordance with the present utility model;
FIG. 4 is a schematic view of the construction of the rammer mechanism of the present utility model;
FIG. 5 is a schematic illustration of the attachment of the mounting plate to the ram of the present utility model.
Reference numerals in the drawings are as follows:
1. the device comprises a frame, a movable frame, a transmission case, a transmission shaft, a movable wheel and a transmission shaft, wherein the frame is provided with the movable frame;
6. steering mechanism 61, steering wheel 62, sleeve 63, steering shaft 64, bogie 65 and steering wheel;
7. A transmission mechanism; 71, a screw motor, 72, a reciprocating screw, 73, a sliding block, 74 and a connecting rod;
8. Ram mechanism, 81, movable seat, 82, pulley, 83, hydraulic column, 84, limit rod, 85, mounting plate, 86, buffer rod, 87, ram plate, 88, buffer spring;
9. A support mechanism; 91, a supporting seat, 92, an electric lifting column, 93, a supporting claw;
10. Chute rod, 11, handle.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
The 'up, down, left and right' viewing angles of the device are based on the direction of the drawing of figure 1.
As shown in fig. 1-5, an earth backfill corner ramming device comprises a frame 1, a rammer mechanism 8 is installed in the frame 1, the rammer mechanism 8 is used for ramming earth, two movable frames 2 are fixedly arranged on one side of the bottom of the frame 1, the two movable frames 2 are vertically arranged, the two movable frames 2 are respectively positioned at two corners of the frame 1, the frame 1 and the movable frames 2 are made of metal materials with strong bearing performance, a transmission shaft 4 is rotatably arranged between the two movable frames 2, movable wheels 5 are fixedly arranged at two ends of the transmission shaft 4, a transmission box 3 is fixedly arranged between the two movable frames 2, the transmission shaft 4 penetrates through the transmission box 3, an assisting motor is arranged in the transmission box 3, a bevel gear is bonded at the output end of the assisting motor, a bevel gear is also bonded at the opposite ends of the two transmission shafts 4, the bevel gear of the assisting motor is meshed with the bevel gear of the two transmission shafts 4, and the transmission is realized (the bevel gear is not shown in the figure, and is an existing and mature technology), and attention is paid to the fact that the two movable wheels 5 are required to rotate in the same direction.
When the transmission shaft 4 rotates, the power-assisted motor is started, and the transmission shaft 4 is assisted to rotate, one end, far away from the moving frame 2, of the frame 1 is provided with a steering mechanism 6, the steering mechanism 6 is used for assisting the whole device in steering, the steering mechanism 6 comprises a sleeve 62 fixedly arranged on the frame 1, the sleeve 62 is arranged in the vertical direction, a steering shaft 63 is rotationally arranged in the sleeve 62, the top end of the steering shaft 63 extends out of the sleeve 62 and is fixedly connected with a steering wheel 61, the steering wheel 61 is concentrically matched with the steering shaft 63, the bottom end of the steering shaft 63 extends out of the sleeve 62 and is fixedly provided with a steering frame 64, a steering wheel 65 is rotationally arranged in the steering frame 64, the steering wheel 65 can be driven to steer when the steering wheel 61 is rotated, a handle 11 is fixedly arranged on one side of the frame 1, and the handle 11 is positioned above the moving wheel 5 and can push the whole device to move through the handle 11.
The frame 1 internal fixation is provided with spout pole 10, spout pole 10 sets up along the length direction of frame 1, be provided with two spout poles 10 in this embodiment, and two spout poles 10 are mirror image distribution, install drive mechanism 7 in the position department near spout pole 10 in frame 1, drive mechanism 7 is used for driving ram mechanism 8 and removes along spout pole 10, drive mechanism 7 includes the lead screw motor 71 of fixed mounting on frame 1 lateral wall, frame 1 internal rotation is provided with reciprocating lead screw 72, and reciprocating lead screw 72 and spout pole 10 parallel arrangement, lead screw motor 71 is connected with reciprocating lead screw 72 transmission, the last transmission of reciprocating lead screw 72 is provided with slider 73, can drive reciprocating lead screw 72 rotation after the lead screw motor 71 starts, make slider 73 follow reciprocating lead screw 72 round trip movement. The rammer mechanism 8 includes a movable seat 81 disposed on the chute rod 10, a pulley 82 is rotatably disposed on a side wall of the movable seat 81, the movable seat 81 is slidably connected with the chute rod 10 through the pulley 82, the movable seat 81 is disposed between the two chute rods 10 in this embodiment, the pulleys 82 on two sides of the movable seat 81 are respectively disposed in the two chute rods 10, the movable seat 81 can slide back and forth along the chute rods 10, a connecting rod 74 is fixedly disposed between the movable seat 81 and the sliding block 73, and the sliding block 73 can drive the movable seat 81 to slide through the connecting rod 74.
The movable seat 81 is fixedly provided with the hydraulic column 83, the output end of the hydraulic column 83 faces downwards, the output end of the hydraulic column 83 is fixedly connected with the mounting plate 85, the bottom end of the mounting plate 85 is slidably provided with a plurality of buffer rods 86, the buffer rods 86 are uniformly distributed at four corners of the mounting plate 85, the buffer rods 86 can move up and down in the mounting plate 85, the bottom ends of the buffer rods 86 are fixedly connected with the rammer plates 87, buffer springs 88 are fixedly arranged between the top ends of the buffer rods 86 and the inner wall of the mounting plate 85, the buffer springs 88 are matched with the buffer rods 86, impact force generated when the rammer plates 87 are in contact with the ground can be buffered, and the joints of the rammer plates 87 and the mounting plate 85 are prevented from breaking after long-time impact. A plurality of limiting rods 84 are arranged between the mounting plate 85 and the movable seat 81, the limiting rods 84 are composed of two parts of a sleeve rod and a movable rod, the top ends of the sleeve rods are fixedly connected with the movable seat 81, the bottom ends of the movable rods are fixedly connected with the mounting plate 85, the movable rods can move up and down in the sleeve rod, when the hydraulic column 83 drives the mounting plate 85 to move up and down, the movable rods in the limiting rods 84 move up and down along with the mounting plate 85, the limiting rods 84 are used for limiting the moving direction of the mounting plate 85, and the stability of the mounting plate 85 in moving up and down is improved.
Example 2
Based on embodiment 1, a difference is that the frame 1 is provided with supporting mechanisms 9 on both sides of the moving seat 81, the supporting mechanisms 9 are used for supporting the whole device when the rammer mechanism 8 operates, the device is prevented from deviating from the original position, the supporting mechanisms 9 comprise supporting seats 91 arranged on the frame 1, the supporting seats 91 are fixedly provided with electric lifting columns 92, and the output ends of the electric lifting columns 92 face downwards and are fixedly connected with supporting claws 93.
The utility model is based on the principle and the flow that the whole device is pushed to the backfilling position of earthwork through the handle 11, then an electric lifting column 92 on the supporting mechanism 9 is started, the output end of the electric lifting column 92 drives a supporting claw 93 to descend, the supporting claw 93 is in contact with the ground to support and limit the device, then a hydraulic column 83 on the rammer mechanism 8 is started, the hydraulic column 83 drives a mounting plate 85 and a rammer plate 87 to move up and down, the rammer plate 87 performs ramming and compaction on earthwork below the mounting plate in the up and down moving process, then a screw motor 71 on the transmission mechanism 7 is started, the screw motor 71 drives a sliding block 73 to perform reciprocating linear movement through a reciprocating screw rod 72, the sliding block 73 drives a moving seat 81 to reciprocate along a chute rod 10 through a connecting rod 74, the moving seat 81 drives the rammer plate 87 to perform reciprocating linear movement along the chute rod 10, and the moving seat 81 and the rammer plate 87 can perform reciprocating compaction on all earthwork below the frame 1 in the length range, so that the rammer plate 87 can perform reciprocating linear movement back and forth along the chute rod 10, the effect of compacting earthwork below the frame 1 can be greatly improved and the range can be expanded.
When the earthwork below the frame 1 is fully tamped and flattened, the device is moved to a position which is not tamped yet to continue the operation, the moving device is specifically operated by firstly starting an electric lifting column 92 on a supporting mechanism 9, the output end of the electric lifting column 92 drives a supporting claw 93 to ascend and reset, then a worker pushes the device to move through a handle 11, a transmission shaft 4 rotates when the device moves, a booster motor in a transmission case 3 is started at the moment, the auxiliary transmission shaft 4 rotates, boosting is provided for the whole device to advance, the worker pushes the device to move more labor-saving, if the moving direction of the device needs to be adjusted, another worker stands at a position close to a steering mechanism 6, rotates a steering shaft 63 through a steering wheel 61, the steering shaft 63 drives a steering frame 64 and a steering wheel 65 to change the direction, and the moving direction of the whole device is changed after the direction of the steering wheel 65 is changed. Compared with mobile equipment such as an excavator, a bulldozer and the like, the device has the advantages that the weight and occupied space are small, the foundation can be protected from being crushed, and the scheduling is very convenient.
It should be noted that, the utility model is an earth backfill corner ramming device, the components are all universal standard components or components known to those skilled in the art, the structure and principle are all known by those skilled in the art through technical manuals or known by routine experimental methods, all the electric devices are connected at the idle position of the device through wires, the electric devices refer to power elements, electric devices and an adaptive monitoring computer and a power supply, and the specific connection means refers to the working principle that the electric connection is completed in sequence between the electric devices, and the detailed connection means is known in the art.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The utility model provides an earthwork backfill corner ramming device, includes frame (1), its characterized in that, install ram mechanism (8) in frame (1), the fixed two movable frame (2) that are provided with in bottom one side of frame (1), two it is provided with transmission shaft (4) to rotate between movable frame (2), the both ends of transmission shaft (4) are all fixed to be provided with and remove round (5), the one end that keeps away from movable frame (2) on frame (1) is provided with steering mechanism (6);
The steering mechanism (6) comprises a sleeve (62) fixedly arranged on the frame (1), a steering shaft (63) is rotationally arranged on the sleeve (62), a steering wheel (61) is fixedly connected to the top end of the steering shaft (63), a bogie (64) is fixedly arranged at the bottom end of the steering shaft (63), and a steering wheel (65) is rotationally arranged on the bogie (64).
2. The earth backfill corner ramming device according to claim 1, wherein a transmission case (3) is fixedly installed between the two movable frames (2), the transmission shaft (4) penetrates through the transmission case (3), a handle (11) is fixedly arranged on one side of the frame (1), and the handle (11) is located above the movable wheels (5).
3. The earth backfill corner ramming device according to claim 1, characterized in that a chute rod (10) is fixedly arranged in the frame (1), the chute rod (10) is arranged along the length direction of the frame (1), and a transmission mechanism (7) is arranged in the frame (1) at a position close to the chute rod (10).
4. A corner ramming device for earth backfilling according to claim 3, characterized in that the transmission mechanism (7) comprises a screw motor (71) fixedly mounted on the side wall of the frame (1), a reciprocating screw (72) is rotationally arranged on the frame (1), the screw motor (71) is in transmission connection with the reciprocating screw (72), and a sliding block (73) is arranged on the reciprocating screw (72) in transmission.
5. The earth backfill corner ramming device according to claim 1, characterized in that the ramming mechanism (8) comprises a movable seat (81) arranged on the chute rod (10), a pulley (82) is rotatably arranged on the side wall of the movable seat (81), the movable seat (81) is slidably connected with the chute rod (10) through the pulley (82), and a connecting rod (74) is fixedly arranged between the movable seat (81) and the sliding block (73).
6. The earth backfill corner ramming device according to claim 5, characterized in that a hydraulic column (83) is fixedly installed on the movable base (81), an output end of the hydraulic column (83) faces downwards and is fixedly connected with a mounting plate (85), a plurality of buffer rods (86) are slidably arranged at the bottom end of the mounting plate (85), a rammer plate (87) is fixedly connected with the bottom end of the buffer rods (86), a buffer spring (88) is fixedly arranged between the top end of the buffer rods (86) and the inner wall of the mounting plate (85), and a plurality of limit rods (84) are arranged between the mounting plate (85) and the movable base (81).
7. The earth backfill corner ramming device according to claim 1, wherein the frame (1) is provided with supporting mechanisms (9) on both sides of the movable seat (81), the supporting mechanisms (9) comprise supporting seats (91) arranged on the frame (1), electric lifting columns (92) are fixedly arranged on the supporting seats (91), and the output ends of the electric lifting columns (92) face downwards and are fixedly connected with supporting claws (93).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420383365.6U CN222100802U (en) | 2024-02-29 | 2024-02-29 | A soil backfill corner compaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202420383365.6U CN222100802U (en) | 2024-02-29 | 2024-02-29 | A soil backfill corner compaction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN222100802U true CN222100802U (en) | 2024-12-03 |
Family
ID=93616076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202420383365.6U Active CN222100802U (en) | 2024-02-29 | 2024-02-29 | A soil backfill corner compaction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN222100802U (en) |
-
2024
- 2024-02-29 CN CN202420383365.6U patent/CN222100802U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN212270928U (en) | A piling device for building construction | |
| CN222100802U (en) | A soil backfill corner compaction device | |
| CN212002116U (en) | Civil engineering troweling device | |
| CN215564730U (en) | Strutting arrangement for civil engineering | |
| CN114197557A (en) | Pipeline landfill device and method for road construction | |
| CN222008866U (en) | A paving and compacting device for earth backfilling | |
| CN215210973U (en) | Vibrating apparatus for water conservancy construction | |
| CN216787086U (en) | Backfill tamping device | |
| CN218148272U (en) | Tamping device for electric power construction | |
| CN213773363U (en) | Municipal works are with pile device | |
| CN217149799U (en) | Road and bridge road bed construction ramming compaction device | |
| CN211036959U (en) | High-efficient portable backfill soil tamping machinery | |
| CN211922229U (en) | Highway quartering hammer | |
| CN212104009U (en) | Hydraulic engineering construction is with foundation tamping unit who has stable structure | |
| CN211472466U (en) | Tamping device for building construction | |
| CN211472831U (en) | A portable mound base device for civil engineering construction | |
| CN114803973A (en) | Trench cover plate installation device and method | |
| CN222557714U (en) | A device for improving the compaction of roadbed and inspection well edge | |
| CN222044153U (en) | Tamping device | |
| CN218580737U (en) | Electric power engineering construction cable conveying mechanism | |
| CN215210974U (en) | Construction rammer compactor | |
| CN217781994U (en) | Ground pile ramming device for constructional engineering | |
| CN219157700U (en) | A steel sheet pile foundation pit support structure | |
| CN219808661U (en) | Leveling equipment for terrace | |
| CN222456033U (en) | A tamping device for engineering construction |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |