CN214530675U - Protective device for cast-in-situ bored pile - Google Patents
Protective device for cast-in-situ bored pile Download PDFInfo
- Publication number
- CN214530675U CN214530675U CN202120372079.6U CN202120372079U CN214530675U CN 214530675 U CN214530675 U CN 214530675U CN 202120372079 U CN202120372079 U CN 202120372079U CN 214530675 U CN214530675 U CN 214530675U
- Authority
- CN
- China
- Prior art keywords
- lantern ring
- reinforcement cage
- steel reinforcement
- cast
- push pedal
- 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
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The utility model relates to a protector of bored concrete pile relates to the field of construction, and it is including setting up in two lantern rings of steel reinforcement cage periphery side sliding connection, the equal sliding connection in periphery side of the lantern ring has the push pedal, the push pedal is close to the side fixedly connected with guide bar of the lantern ring, the guiding hole has radially been seted up along it to the periphery lateral wall of the lantern ring, guide bar sliding connection in the guiding hole, the push pedal with be provided with the buffering subassembly that is used for the buffering between the lantern ring. This application when steel reinforcement cage hoist and mount in-process produces the slope, the tip of steel reinforcement cage drives the lantern ring to the direction motion of being close to the drilling inner wall, and the lantern ring drives the push pedal motion, and under the effect of buffering subassembly, the kinetic energy that produces when absorbing the steel reinforcement cage slope has and prevents that the steel reinforcement cage from damaging the drilling, and the protection drilling improves the effect of bored concrete pile quality.
Description
Technical Field
The application relates to the field of building construction, in particular to a protection device for a cast-in-situ bored pile.
Background
A cast-in-place pile is a pile formed by forming a hole in place and pouring concrete or reinforced concrete, and is generally classified into a cast-in-place pile and a cast-in-place pile, in which a pile hole is drilled by a drilling machine and concrete is poured into the hole (or a steel reinforcement cage is hung in the hole in advance).
The existing Chinese patent with the patent application number of CN201120337485.5 provides a cast-in-situ bored pile, which comprises a concrete pile deep into a drilled hole and an expansion layer positioned below the pile, wherein the expansion layer absorbs water and expands after the concrete pile is poured to form an expansion pile end, sediments at the bottom of the drilled hole are compacted, the height ratio of the expansion pile end to the pile is 1: 8-1: 12, and a reinforcement cage is arranged in the pile.
According to the related technology, after the hole is drilled, the steel reinforcement cage is hoisted into the pouring hole, the inventor thinks that the steel reinforcement cage is easy to incline during hoisting of the steel reinforcement cage, and the inclined steel reinforcement cage touches the inner side wall of the pouring hole, so that the inner wall of the pouring hole is damaged, and the quality of the manufactured pouring pile is affected.
SUMMERY OF THE UTILITY MODEL
In order to reduce the probability that the inner wall of the filling hole is damaged, the application provides a protection device for a cast-in-situ bored pile.
The application provides a protector of bored concrete pile adopts following technical scheme:
the utility model provides a protector of bored concrete pile, is including setting up in two lantern rings of steel reinforcement cage periphery side sliding connection, the equal sliding connection in periphery side of the lantern ring has the push pedal, the push pedal is close to the side fixedly connected with guide bar of the lantern ring, the guiding hole has radially been seted up along it to the periphery lateral wall of the lantern ring, guide bar sliding connection in the guiding hole, the push pedal with be provided with the buffering subassembly that is used for the buffering between the lantern ring.
By adopting the technical scheme, the worker firstly moves the two lantern rings until the two lantern rings are sleeved on the outer peripheral side of the steel reinforcement cage, then the worker hoists the steel reinforcement cage by using the hoisting machine, the steel reinforcement cage drives the lantern rings to move towards the inside of the drill hole until the steel reinforcement cage drives the lantern rings and the push plate to move into the drill hole, when the steel reinforcement cage tilts in the hoisting process, the end part of the steel reinforcement cage drives the lantern rings to move towards the direction close to the inner wall of the drill hole, the lantern rings drive the push plate to move until the push plate is abutted against the inner wall of the drill hole, at the moment, the push plate is driven to drive the guide rod to move along the guide hole, the kinetic energy generated when the steel reinforcement cage tilts is absorbed under the action of the buffer component, the steel reinforcement cage is prevented from damaging the drill hole, the quality of a cast pile is effectively protected, after the steel reinforcement cage is placed, the worker moves the lantern rings along the radial direction of the steel reinforcement cage until the lantern rings drive the push plate to separate from the steel reinforcement cage, and then concrete is poured into the drill hole, is convenient and quick.
Optionally, the buffering subassembly include fixed connection in the base of lantern ring periphery lateral wall and with base side fixed connection's flexure strip, the flexure strip with enclose between the base and be equipped with the cavity, the push pedal is close to the side fixed connection of base has the briquetting, the cross section of briquetting is trapezoidal, the briquetting peg graft in the cavity.
Through adopting above-mentioned technical scheme, when the steel reinforcement cage drives the lantern ring and drives the push pedal motion to with the inner wall butt of drilling, the push pedal is to the direction motion near the lantern ring, the push pedal drives the clamp plate to the cavity internal motion, the flexure strip of both sides produces elastic deformation to the direction that deviates from each other this moment, the kinetic energy that produces when utilizing the elasticity of flexure strip to fully absorb the steel reinforcement cage slope, reduce the hard collision of steel reinforcement cage and drilling inner wall, effective protection drilling, the quality of improvement bored concrete pile.
Optionally, the guide bar side fixedly connected with stopper, the guide bar is close to the spacing groove has been seted up to the inner wall of stopper, the both ends of spacing groove all are open, stopper sliding connection in the spacing inslot.
Through adopting above-mentioned technical scheme, utilize the cooperation restriction push pedal of stopper and spacing groove rotatory at the motion in-process, the radial motion of the steel reinforcement cage is followed to the push pedal of being convenient for, convenient and fast.
Optionally, steel reinforcement cage's periphery lateral wall is along its length direction fixedly connected with slide, the opening orientation of slide keeps away from steel reinforcement cage's direction, sliding connection has the slider in the slide, the slider with the inner wall fixed connection of the lantern ring, the slide with the cross section of slider is "T" style of calligraphy.
Through adopting above-mentioned technical scheme, utilize the cooperation of slide and slider to provide the direction for the motion of the lantern ring, the slide of "T" style of calligraphy prevents effectively with the cooperation of slider that the slider from producing radial displacement simultaneously, the lantern ring of being convenient for moves along the steel reinforcement cage, convenient and fast.
Optionally, a sliding groove is formed in the inner wall of the sliding way, connecting blocks are connected in the sliding groove in a sliding mode, one of the sliding blocks is close to the side face of each connecting block, a connecting groove is formed in the side face of each connecting block, each connecting block is matched with the corresponding connecting groove in an inserting mode, and a driving piece used for driving the corresponding connecting block to be inserted into the corresponding connecting groove is arranged in the sliding groove.
Through adopting above-mentioned technical scheme, the staff removes the lantern ring along the slide, aligns with the spread groove until the lantern ring moves to the spout, and this moment under the effect of driving piece, the connecting block is pegged graft to the spread groove in, accomplishes being connected and the locking to steel reinforcement cage and the lantern ring, and the steel reinforcement cage of being convenient for drives the lantern ring motion, convenient and fast.
Optionally, the driving member is a spring, one end of the spring abuts against the side surface of the sliding groove, and the other end of the spring abuts against the side surface of the connecting block.
Through adopting above-mentioned technical scheme, utilize the elastic drive connecting block of spring to peg graft to the spread groove in, labour saving and time saving.
Optionally, the terminal surface of the lantern ring runs through along vertical direction and has seted up the connecting hole, wear to be equipped with the connecting rod in the connecting hole, the connecting rod is close to the terminal fixedly connected with threaded rod of the lantern ring, threaded connection has two nuts all around of threaded rod, two the screw thread set up respectively in the both sides of the lantern ring.
Through adopting above-mentioned technical scheme, utilize the cooperation of connecting rod and connecting hole to be connected two lantern rings, keep synchronous motion, utilize the threaded rod to be convenient for being connected of connecting rod and lantern ring with the cooperation of two nuts simultaneously.
Optionally, the push plate is provided with a plurality of push plates on the periphery of the lantern ring.
Through adopting above-mentioned technical scheme, a plurality of push pedal combined action reduce the probability that the steel reinforcement cage directly collides the drilling pore wall from the multiangle to a great extent.
In summary, the present application includes at least one of the following beneficial technical effects:
1. when steel reinforcement cage produced the slope at the hoist and mount in-process, steel reinforcement cage's tip drives the lantern ring to the direction motion that is close to the drilling inner wall, the lantern ring drives the push pedal motion, until the inner wall butt of push pedal and drilling, take the push pedal to drive the guide bar along the guiding hole motion this moment, the push pedal is to the direction motion that is close to the lantern ring, the push pedal drives the clamp plate to the cavity internal motion, the flexure strip of both sides produces elastic deformation to the direction that deviates from each other this moment, the kinetic energy that produces when utilizing the elasticity of flexure strip fully to absorb steel reinforcement cage slope, effectively protect drilling, improve bored concrete pile's quality.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;
FIG. 2 is a schematic cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged partial schematic view of portion B of FIG. 2;
fig. 4 is a partially enlarged schematic view of a portion C in fig. 1.
Reference numerals: 1. a reinforcement cage; 2. a collar; 3. pushing the plate; 4. a guide bar; 5. a guide hole; 6. a base; 7. an elastic sheet; 8. a cavity; 9. briquetting; 10. a limiting block; 11. a limiting groove; 12. a slideway; 13. a slider; 14. a chute; 15. connecting blocks; 16. connecting grooves; 17. a spring; 18. connecting holes; 19. a connecting rod; 20. a threaded rod; 21. and a nut.
Detailed Description
The present application is described in further detail below with reference to figures 1-4.
The embodiment of the application discloses protector of drilling bored concrete pile. Referring to fig. 1 and 2, a protection device for a bored pile comprises two lantern rings 2 sleeved on the outer side wall of a steel reinforcement cage 1, four push plates 3 are connected to the outer peripheral side of the lantern ring 2 in a sliding manner along the radial direction of the lantern ring, the four push plates 3 are arranged at extreme positions in a manner of moving towards the direction close to the lantern ring 2 and jointly enclose into a circle and are concentric with the lantern ring 2, guide rods 4 are fixedly connected to the side faces, close to the lantern ring 2, of the push plates 3 through bolts, guide holes 5 are formed in the peripheral side wall of the lantern ring 2 along the radial direction of the lantern ring, the guide rods 4 are connected into the guide holes 5 in a sliding manner, when the steel reinforcement cage 1 inclines in the hoisting process, the end portion of the steel reinforcement cage 1 drives the lantern ring 2 to move towards the direction close to the inner wall of a drill hole, the lantern ring 2 drives the push plates 3 to move until the push plates 3 abut against the inner wall of the drill hole, the kinetic energy generated when the steel reinforcement cage 1 inclines is absorbed, the drill hole is prevented from being hit by the steel reinforcement cage 1, and the drill hole is effectively protected, the quality of the cast-in-place pile is improved.
Refer to fig. 1 and fig. 2, for the rotation of restriction guide bar 4, bolt fixedly connected with stopper 10 is passed through to 4 sides of guide bar, spacing groove 11 has been seted up to the inner wall that guide bar 4 is close to stopper 10, the both ends of spacing groove 11 all are open, stopper 10 sliding connection is in spacing groove 11, spacing groove 11 is "T" style of calligraphy with the cross section of stopper 10, it is rotatory at the motion in-process to utilize stopper 10 and spacing groove 11's cooperation restriction push pedal 3, the radial motion of the push pedal 3 edge steel reinforcement cage 1 of being convenient for, and is convenient and fast.
Referring to fig. 1 and 2, in order to facilitate the absorption of the collision between the steel reinforcement cage 1 and the inner wall of the drilled hole, a buffer assembly is arranged between the push plate 3 and the lantern ring 2, the buffer assembly comprises a base 6 fixedly connected to the peripheral side wall of the lantern ring 2 through bolts and an elastic sheet 7 integrally formed with the side surface of the base 6, a cavity 8 is formed between the elastic sheet 7 and the base 6, a pressing block 9 is fixedly connected to the side surface of the push plate 3 close to the base 6 through bolts, the cross section of the pressing block 9 is trapezoidal, and the pressing block 9 is inserted into the cavity 8.
When steel reinforcement cage 1 drives lantern ring 2 and drives push pedal 3 and move to the inner wall butt with drilling, push pedal 3 is to the direction motion that is close to lantern ring 2, and push pedal 3 drives the clamp plate to 8 internal motion in the cavity, and the flexure strip 7 of both sides produces elastic deformation to the direction that deviates from each other this moment, utilizes the kinetic energy that produces when the elasticity of flexure strip 7 fully absorbs steel reinforcement cage 1 slope, effectively protects drilling.
Referring to fig. 1 and 3, for the convenience of lantern ring 2 along the motion of steel reinforcement cage 1, the periphery lateral wall of steel reinforcement cage 1 passes through bolt fixedly connected with slide 12 along its length direction, the opening orientation of slide 12 is kept away from the direction of steel reinforcement cage 1, sliding connection has slider 13 in slide 12, slider 13 passes through bolt fixed connection with the inner wall of the lantern ring 2, slide 12 is "T" style of calligraphy with slider 13's cross section, utilize the cooperation of slide 12 and slider 13 to provide the direction for the motion of the lantern ring 2, the lantern ring 2 of being convenient for moves along steel reinforcement cage 1.
Refer to fig. 1 and fig. 3, for the convenience of restricting the motion of one of them lantern ring 2, spout 14 has been seted up to slide 12 inner wall, sliding connection has connecting block 15 in spout 14, connecting groove 16 with connecting block 15 grafting adaptation is seted up to the side that one of them slider 13 is close to connecting block 15, for the convenience of connecting block 15 is pegged graft to connecting groove 16 in, be provided with the driving piece in the spout 14, the driving piece sets up to spring 17, spring 17's one end and spout 14 side butt, the other end and connecting block 15 side butt, utilize spring 17's elastic drive connecting block 15 to peg graft to connecting groove 16 in, high convenience and fast.
Referring to fig. 1 and 4, in order to connect two lantern rings 2 together, two connecting holes 18 have been seted up along vertical direction to the terminal surface of the lantern ring 2 running through, two connecting holes 18 are along the radial symmetric distribution of the lantern ring 2, wear to be equipped with connecting rod 19 in the connecting hole 18, connecting rod 19 is close to the terminal integral type shaping threaded rod 20 of the lantern ring 2, threaded rod 20 week side threaded connection has two nuts 21, two screws are located the both sides of the lantern ring 2 respectively, utilize the cooperation of connecting rod 19 and connecting hole 18 to be connected two lantern rings 2, keep synchronous motion.
After the hoisting of the steel reinforcement cage 1 is completed, the worker drives the connecting block 15 to completely return to the connecting groove 16, the lantern ring 2 is moved along the length direction of the steel reinforcement cage 1 until the two lantern rings 2 are completely separated from the steel reinforcement cage 1, the disassembly of the lantern ring 2 is completed, and the lifting device is convenient and fast.
The implementation principle of the protective device for the cast-in-situ bored pile in the embodiment of the application is as follows: when steel reinforcement cage 1 produced the slope at the hoist and mount in-process, the tip of steel reinforcement cage 1 drives lantern ring 2 to the direction motion near the drilling inner wall, lantern ring 2 drives the motion of push pedal 3, inner wall butt until push pedal 3 and drilling, take push pedal 3 to drive guide bar 4 along the motion of guiding hole 5 this moment, push pedal 3 is to the direction motion near lantern ring 2, push pedal 3 drives the clamp plate to 8 internalization in the cavity, the flexure strip 7 of both sides produces elastic deformation to the direction that deviates from mutually this moment, the kinetic energy that produces when utilizing the elasticity of flexure strip 7 fully to absorb steel reinforcement cage 1 slope, effectively protect drilling, improve the quality of bored concrete pile.
After steel reinforcement cage 1 was placed, the staff along steel reinforcement cage 1 radial movement lantern ring 2, until lantern ring 2 drives push pedal 3 and breaks away from steel reinforcement cage 1, again to the interior concreting of drilling, form the bored concrete pile.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a protector of bored concrete pile which characterized in that: including setting up in steel reinforcement cage (1) periphery side sliding connection have two lantern rings (2), the equal sliding connection in periphery side of the lantern ring (2) has push pedal (3), push pedal (3) are close to the side fixedly connected with guide bar (4) of the lantern ring (2), guiding hole (5) have radially been seted up along it to the periphery lateral wall of the lantern ring (2), guide bar (4) sliding connection in guiding hole (5), push pedal (3) with be provided with the buffering subassembly that is used for the buffering between the lantern ring (2).
2. A cast-in-situ bored pile guard according to claim 1, wherein: the buffer assembly comprises a base (6) fixedly connected with the peripheral side wall of the lantern ring (2) and an elastic sheet (7) fixedly connected with the side face of the base (6), a cavity (8) is formed between the elastic sheet (7) and the base (6), the push plate (3) is close to a pressing block (9) fixedly connected with the side face of the base (6), the cross section of the pressing block (9) is trapezoidal, and the pressing block (9) is inserted into the cavity (8).
3. A cast-in-situ bored pile guard according to claim 2, wherein: guide bar (4) side fixedly connected with stopper (10), guide bar (4) are close to spacing groove (11) have been seted up to the inner wall of stopper (10), the both ends of spacing groove (11) all are open, stopper (10) sliding connection in spacing groove (11).
4. A cast-in-situ bored pile guard according to claim 3, wherein: the periphery lateral wall of steel reinforcement cage (1) is along its length direction fixedly connected with slide (12), the opening orientation of slide (12) is kept away from the direction of steel reinforcement cage (1), sliding connection has slider (13) in slide (12), slider (13) with the inner wall fixed connection of the lantern ring (2), slide (12) with the cross section of slider (13) is "T" style of calligraphy.
5. A cast-in-situ bored pile guard according to claim 4, wherein: slide (12) inner wall has seted up spout (14), sliding connection has connecting block (15) in spout (14), one of them slider (13) are close to connecting groove (16) have been seted up to the side of connecting block (15), connecting block (15) with connecting groove (16) grafting adaptation, be provided with in spout (14) and be used for the drive connecting block (15) peg graft extremely driving piece in connecting groove (16).
6. A cast-in-situ bored pile guard according to claim 5, wherein: the driving piece is arranged to be a spring (17), one end of the spring (17) is abutted to the side face of the sliding groove (14), and the other end of the spring is abutted to the side face of the connecting block (15).
7. A cast-in-situ bored pile guard according to claim 6, wherein: the terminal surface of the lantern ring (2) runs through along vertical direction and has seted up connecting hole (18), wear to be equipped with connecting rod (19) in connecting hole (18), connecting rod (19) are close to terminal fixedly connected with threaded rod (20) of the lantern ring (2), threaded connection has two nuts (21) all around threaded rod (20), two the screw thread set up respectively in the both sides of the lantern ring (2).
8. A cast-in-situ bored pile guard according to claim 7, wherein: the push plates (3) are arranged on the periphery of the lantern ring (2) in a plurality.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120372079.6U CN214530675U (en) | 2021-02-09 | 2021-02-09 | Protective device for cast-in-situ bored pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120372079.6U CN214530675U (en) | 2021-02-09 | 2021-02-09 | Protective device for cast-in-situ bored pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214530675U true CN214530675U (en) | 2021-10-29 |
Family
ID=78235218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120372079.6U Active CN214530675U (en) | 2021-02-09 | 2021-02-09 | Protective device for cast-in-situ bored pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214530675U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113981982A (en) * | 2021-11-05 | 2022-01-28 | 华能洋浦热电有限公司 | Transfer device of pile foundation steel reinforcement cage |
| CN114197352A (en) * | 2021-12-24 | 2022-03-18 | 江苏海锋能源科技有限公司 | Bridge cushion cap anticollision piece and anticollision circle |
| CN114277783A (en) * | 2021-12-31 | 2022-04-05 | 中铁二十五局集团第二工程有限公司 | Reinforcement cage structure for karst area pile foundation and construction method |
| CN116181035A (en) * | 2023-04-26 | 2023-05-30 | 沧州渤海新区海翔港务有限公司 | Bored concrete pile construction platform based on harbour engineering |
| CN117569730A (en) * | 2024-01-16 | 2024-02-20 | 浙江省水电建筑安装有限公司 | Pore-forming device for cast-in-situ bored pile and construction method |
-
2021
- 2021-02-09 CN CN202120372079.6U patent/CN214530675U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113981982A (en) * | 2021-11-05 | 2022-01-28 | 华能洋浦热电有限公司 | Transfer device of pile foundation steel reinforcement cage |
| CN114197352A (en) * | 2021-12-24 | 2022-03-18 | 江苏海锋能源科技有限公司 | Bridge cushion cap anticollision piece and anticollision circle |
| CN114277783A (en) * | 2021-12-31 | 2022-04-05 | 中铁二十五局集团第二工程有限公司 | Reinforcement cage structure for karst area pile foundation and construction method |
| CN116181035A (en) * | 2023-04-26 | 2023-05-30 | 沧州渤海新区海翔港务有限公司 | Bored concrete pile construction platform based on harbour engineering |
| CN116181035B (en) * | 2023-04-26 | 2023-07-04 | 沧州渤海新区海翔港务有限公司 | Bored concrete pile construction platform based on harbour engineering |
| CN117569730A (en) * | 2024-01-16 | 2024-02-20 | 浙江省水电建筑安装有限公司 | Pore-forming device for cast-in-situ bored pile and construction method |
| CN117569730B (en) * | 2024-01-16 | 2024-04-02 | 浙江省水电建筑安装有限公司 | Pore-forming device for cast-in-situ bored pile and construction method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN214530675U (en) | Protective device for cast-in-situ bored pile | |
| CN104018541B (en) | A kind of gravity-type hydraulic quartering hammer | |
| CN104162462B (en) | Hydraulic breaking hammer | |
| CN104018540B (en) | A kind of gravity quartering hammer | |
| CN206159357U (en) | Dig rig soon and damper of unit head thereof | |
| CN209413925U (en) | A kind of jumbolter based on Platform of Excavators | |
| CN218643361U (en) | Drill bit group for pile cutter | |
| CN116044461A (en) | Tunnel excavation large deformation strong supporting device | |
| CN206015534U (en) | The self-propelled running gear of cantilever box beam Hanging Basket | |
| CN210289379U (en) | Protective guard for engineering safety | |
| CN209924909U (en) | Rotary drilling tool for efficiently breaking rock | |
| CN108978663A (en) | A kind of fixed device of inclined piling machine of anti-pile | |
| CN211314118U (en) | Anchor rod drilling depth limiting device for coal mine excavation | |
| CN111764905B (en) | Anti-twisting method for shaft tunneling | |
| CN105970959A (en) | Pile driver special for building | |
| CN203899651U (en) | Hydraulic breaking hammer | |
| CN208733632U (en) | A kind of quick broken pile head device of cast-in-place concrete pile | |
| CN215925994U (en) | Inclined pile foundation pit supporting structure | |
| CN219114361U (en) | Mould demolishs device of multisection stake | |
| CN212927737U (en) | Rotary drilling rod with double-retainer ring structure | |
| CN221052578U (en) | Tubular pile core filling device convenient to draw | |
| CN110344396B (en) | Steel pipe concrete pile | |
| CN219794782U (en) | Building hydraulic demolishing device | |
| CN215629940U (en) | Piling device for construction engineering construction | |
| CN113605415B (en) | Slope reinforcing apparatus for building municipal works |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |