CN218116478U

CN218116478U - Safety anchoring device for foundation pit support

Info

Publication number: CN218116478U
Application number: CN202222186175.9U
Authority: CN
Inventors: 张红亮; 坛发亮
Original assignee: Beijing Jianda Hongtu Construction Engineering Co ltd
Current assignee: Beijing Jianda Hongtu Construction Engineering Co ltd
Priority date: 2022-08-18
Filing date: 2022-08-18
Publication date: 2022-12-23
Anticipated expiration: 2032-08-18

Abstract

The application relates to the field of foundation pit support, in particular to a safety anchoring device for foundation pit support, which comprises an anchor rod body, a compression mechanism and a drill bit, wherein the compression mechanism is sleeved on the anchor rod body; the compressing mechanism comprises a plurality of compressing rings and a plurality of compressing sleeves, the compressing rings and the compressing sleeves are all sleeved on the anchor rod body, the circumferential surfaces at two ends of each compressing sleeve are fixedly connected with two adjacent compressing rings respectively, and a plurality of mutually parallel openings are formed around the circumferential direction of each compressing sleeve. This application has the effect that the anchor power that increases excavation supporting made the foundation ditch safer.

Description

Safety anchoring device for foundation pit support

Technical Field

The application relates to the field of foundation pit support, in particular to a safety anchoring device of foundation pit support.

Background

The foundation pit support is a supporting, blocking, reinforcing and protecting measure adopted for the side wall of the foundation pit and the surrounding environment in order to ensure the safety of the construction of an underground structure and the surrounding environment of the foundation pit.

The existing foundation pit supporting measures are mainly to anchor the foundation pit by using an anchor rod, the anchoring can bear the thrust exerted by soil pressure, water pressure or internal force, and the stability is maintained by using the anchoring force of the stratum. The most widely used grouting anchor rod is a hollow grouting anchor rod, the anchor rod body of the grouting anchor rod is in a hollow design, the hollow part of the rod body is used as a grouting channel, the outer surface of the anchor rod body is in a standard large-pitch thread structure in full length, and the anchoring force is improved by utilizing the bonding area of the anchor rod body and a grouting material.

In view of the above-mentioned related technologies, the inventor believes that there is a defect that the effective contact area with the soil body is small, so the generated anchoring force is also small, and potential safety hazards may occur.

SUMMERY OF THE UTILITY MODEL

In order to increase the anchoring force of the foundation pit support and enable the foundation pit to be safer, the application provides a safety anchoring device of the foundation pit support.

The application provides a safe anchor of excavation supporting adopts following technical scheme:

a safety anchoring device for foundation pit support comprises an anchor rod body, a compression mechanism sleeved on the anchor rod body, and a drill bit integrally formed with the anchor rod body; the compressing mechanism comprises a plurality of compressing rings and a plurality of compressing sleeves, the compressing rings and the compressing sleeves are all sleeved on the anchor rod body, the circumferential surfaces at the two ends of the compressing sleeves are fixedly connected with the two adjacent compressing rings respectively, and a plurality of mutually parallel openings are formed in the circumferential direction of the compressing sleeves.

Through adopting above-mentioned technical scheme, the drill bit can insert more easily when inserting the hole of foundation ditch, receive the pressure after, a plurality of stripe structures are cut apart into by a plurality of openings that are parallel to each other to the compression sleeve body, when the compression sleeve received pressure, the stripe structure of body can buckle because of pressure to form a plurality of spines of inserting in soil, the spine can provide bigger anchor power, reinforcing anchor effect, increase excavation supporting's anchor power, increase the security of foundation ditch.

Preferably, the length of the compression sleeve increases in sequence from the drill bit to the direction far away from the drill bit, and a crease is processed on the inner wall of the compression sleeve at the center line of the length direction.

Through adopting above-mentioned technical scheme, can follow crease bending type behind the compression sleeve pipe compressed and form the spine, the spine is more close to the drill bit and is littleer to form stair structure, more effective reinforcing anchor effect.

Preferably, the compressing mechanism further comprises a fixing ring, a first fixing rod and a second fixing rod; the drill bit fixing device is characterized in that the fixing ring is fixedly connected between a drill bit and an anchor rod body, the first fixing rods and the second fixing rods are multiple in number, the multiple first fixing rods are arranged at intervals around the drill bit in the circumferential direction, one end of each first fixing rod is hinged to the fixing ring, the other end of each first fixing rod is hinged to the second fixing rod, one end, away from the first fixing rods, of the second fixing rod is hinged to a compression ring closest to the fixing ring, and the length of each first fixing rod is larger than that of the second fixing rod.

Through adopting above-mentioned technical scheme, when the compression ring received the extrusion downstream, the retaining ring played spacing effect to it, prevented that the compression ring from breaking away from the stock body, the compression ring drives the second dead lever, and the second dead lever drives first dead lever, because the length of first dead lever is greater than the second dead lever, so the two can form barb structure at the stock body, increase anchoring power.

Preferably, the compression mechanism further comprises a compression tube fixedly connected to a compression ring remote from the drill bit.

Through adopting above-mentioned technical scheme, the setting of compression pipe can be more convenient for exert pressure to compression ring and compression sleeve pipe.

Preferably, the compression mechanism further comprises a compression pipe, the compression pipe is fixedly connected with a compression ring far away from the drill bit, the anchor rod body is of a hollow structure, and a plurality of first grouting openings are uniformly formed in one side close to the drill bit around the circumferential direction of the anchor rod.

Through adopting above-mentioned technical scheme, first slip casting mouth can communicate the stock internal and external, can flow through first slip casting mouth after slip casting in-process thick liquid injection stock is internal.

Preferably, a plurality of second grouting openings are uniformly formed in the wall of the compression pipe, and the second grouting openings correspond to the first grouting openings one by one.

Through adopting above-mentioned technical scheme, after the compression pipe is compressed, first slip casting mouth can communicate the stock body inside and outside with second slip casting mouth one-to-one and coincidence, and after the slip casting, the fixed pipe bodily form that the thick liquid can be better pricks the structure to and the barb structure that first dead lever and second dead lever formed.

Preferably, the drill bit is of a hollow structure, and a plurality of third grouting ports are uniformly formed in the drill bit.

Through adopting above-mentioned technical scheme, the slip casting mouth on the drill bit makes things convenient for follow-up slip casting and can make more even that distributes when the slip casting.

Preferably, one end of the anchor rod body, which is far away from the drill bit, is provided with a grouting plug.

Through adopting above-mentioned technical scheme, the slip casting stopper can prevent the thick liquid outflow after the slip casting.

Preferably, the drill bit is wrapped with a degradable plastic film.

Through adopting above-mentioned technical scheme, degradable plastic film can avoid earth to get into the slip casting mouth when safety anchor inserts the hole, and degradable plastic film can degrade along with time after the use, avoids the polluted environment.

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

1. the drill bit can insert more easily when inserting the hole of foundation ditch, receives pressure after, and the compression sleeve body is cut apart into a plurality of bar structures by a plurality of openings that are parallel to each other, and when compression sleeve received pressure, the bar structure of body can buckle because of pressure to form a plurality of sharp spines of inserting in soil, sharp thorn can provide bigger anchor power, reinforcing anchor effect, increase foundation ditch support's anchor power, increase the security of foundation ditch.

Drawings

Fig. 1 is a schematic overall structure diagram of a safety anchoring device for foundation pit support in the embodiment of the application;

fig. 2 is a schematic structural diagram of an excavation supporting safety anchoring device in an in-use state according to an embodiment of the present application.

Description of the reference numerals: 1. an anchor rod body; 2. a drill bit; 3. a compression mechanism; 31. a compression ring; 311. a first compression ring; 312. A second compression ring; 313. a third compression ring; 314. a fourth compression ring; 32. compressing the sleeve; 321. a first sleeve; 322. A second sleeve; 323. a third sleeve; 33. compressing the tube; 331. a second grouting port; 34. a fixing ring; 341. a first fixing lever; 342. a second fixing bar; 4. a third grouting port; 5. and (6) grouting a plug.

Detailed Description

The present application is described in further detail below with reference to figures 1-2.

The embodiment of the application discloses safety anchor device of foundation ditch support. Referring to fig. 1 and 2, the installation anchoring device includes an anchor rod body 1, a drill bit 2 integrally formed with the anchor rod body 1, and a compression mechanism 3 sleeved on the anchor rod body 1.

Referring to fig. 2, the anchor rod body 1 is a hollow structure, a plurality of first grouting ports (not shown in the figure) are uniformly arranged on a section of the anchor rod body 1 close to the drill bit 2 in a circumferential direction and at intervals around the anchor rod body 1, a grouting plug 5 is arranged at one end of the anchor rod body 1 far away from the drill bit 2, and the grouting plug 5 mainly plays a role in grouting stopping after grouting is performed inside the anchor rod body 1.

Referring to fig. 1, the compression mechanism 3 includes a first compression assembly and a second compression assembly, the first compression assembly includes four compression rings 31, a compression sleeve 32 and a compression pipe 33, in this embodiment, the four compression rings 31 are disposed, the four compression rings 31 are all sleeved on a section of the bolt body 1 close to the drill bit 2 at intervals, and from the drill bit 2 to the grouting plug 5, they are referred to as a first compression ring 311, a second compression ring 312, a third compression ring 313 and a fourth compression ring 314 in sequence.

Referring to fig. 1, three compression sleeves 32 are provided, and two end faces of each compression sleeve 32 are fixedly connected to two adjacent compression rings, and the compression sleeves 32 are referred to as a first sleeve 321, a second sleeve 322 and a third sleeve 323 from the drill bit 2 to the grouting plug 5. The first sleeve 321 has a smaller length than the second sleeve 322, and the second sleeve 322 has a smaller length than the third sleeve 323. A plurality of parallel openings are arranged on the outer wall of the compression sleeve 32 along the length direction of the compression sleeve 32 and around the circumference of the compression sleeve 32 at equal angles, and a crease is processed on one surface of the compression sleeve 32 close to the anchor rod body 1 and at the central line of the compression sleeve 32 in the length direction.

Referring to fig. 1 and 2, the compression pipe 33 is movably sleeved on the anchor rod body 1, the axis of the compression pipe 33 coincides with the axis of the anchor rod body 1, one end surface of the compression pipe 33 is fixedly connected with the fourth compression ring 314, and the other end of the compression pipe 33 is a free end facing the direction of the grouting plug 5. A plurality of second grouting openings 331 are uniformly formed in the side wall of the compression pipe 33 around the circumferential direction of the compression pipe 33, and the first grouting openings and the second grouting openings 331 can correspond to each other one by one. When applying the pressure towards drill bit 2 to compression pipe 33, compression ring 31 can receive pressure and be extruded, and compression ring 31 can exert pressure to compression sleeve 32 this moment, and the pipe body between the opening that is parallel to each other on compression sleeve 32 can be because of pressure outside the stock body 1 bending and the spike that forms a plurality of insertions in the soil, and the spike can provide bigger anchor power, reinforcing anchor effect. After the compression pipe 33 is stressed, the first grouting ports correspond to the second grouting ports 331 one by one and coincide with each other, so that the inside and the outside of the anchor rod body 1 are communicated, and subsequent grouting is facilitated.

Referring to fig. 1 and 2, the second compressing assembly includes a fixing ring 34, a first fixing rod 341 and a second fixing rod 342, the fixing ring 34 is fixedly connected between the drill bit 2 and the bolt body 1, and a plurality of first fixing rods 341 and a plurality of second fixing rods 342 are provided. The plurality of first fixing rods 341 are arranged around the drill bit 2 at equal angular intervals in the circumferential direction, one end of the first fixing rod 341 is hinged to the fixing ring 34, and the other end of the first fixing rod 341 is hinged to one end of the second fixing rod 342. One end of the second fixing rod 342, which is far away from the first fixing rod 341, is hinged with the first compression ring 311, and the length of the first fixing rod 341 is longer than that of the second fixing rod 342. When compression ring 31 received the extrusion and moved to drill bit 2, solid fixed ring 34 can play spacing effect, prevents that compression ring 31 from breaking away from the stock body 1, and first compression ring 311 drives second dead lever 342 this moment, and second dead lever 342 drives first dead lever 341, and the two forms barb structure at the stock body 1, increase anchoring power.

Referring to fig. 2, drill bit 2 is conical bit 2, and even a plurality of third slip casting mouths 4 have been seted up on conical bit 2's the outer wall, makes things convenient for the slip casting, and the parcel has degradable plastic film on drill bit 2, and degradable plastic film can avoid earth to get into the slip casting mouth when drill bit 2 inserts the hole, and degradable plastic film can degrade along with time after the use, avoids the polluted environment.

The implementation principle of the embodiment of the application is as follows: when the safety anchoring device is used, the safety anchoring device is firstly inserted into a hole formed in a foundation pit, then a tool is used for compressing the compression mechanism 3 of the anchor rod body 1, the compression pipe 33 can apply pressure to the compression ring 31 and is finally intercepted by the fixing ring 34 to prevent the compression ring 31 from being separated from the anchor rod body 1, the parallel openings on the pipe wall of the compression sleeve 32 are extruded, the structure of the compression sleeve 32 is damaged along the crease line, a plurality of sharp spines inserted into the soil are bent to the periphery, the first compression ring 31 extrudes the first fixing rod 341 and the second fixing rod 342, the first fixing rod 341 is longer than the second fixing rod 342 to form a barb structure, the sharp spines and the barb structure both increase the anchoring force of the anchor rod, the safety anchoring device is difficult to pull out, after compression is completed, the first grouting port can be overlapped with the second grouting port 331, then grouting is performed on the anchor rod body 1, grout can flow out from the overlapped part of the first grouting port and the second grouting port 331 and the third grouting port 4, and grouting stop can be performed on the foundation pit after compression is completed.

The above are preferred embodiments of the present application, and the scope of protection of the present application is not limited thereto, 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

1. A safety anchoring device for foundation pit support is characterized by comprising an anchor rod body (1), a compression mechanism (3) sleeved on the anchor rod body (1), and a drill bit (2) integrally formed with the anchor rod body (1); compressing mechanism (3) include a plurality of compression rings (31) and many compression sleeve (32), compression ring (31) with compression sleeve (32) are all established on the stock body (1) in the cover, the both ends periphery of compression sleeve (32) respectively with two adjacent compression ring (31) rigid couplings, and set up a plurality of openings that are parallel to each other around the circumference of compression sleeve (32).

2. A safety anchorage device for foundation pit support according to claim 1, wherein: the length of the compression sleeve (32) from the drill bit (2) to the direction far away from the drill bit (2) is sequentially increased, and a crease is processed at the center line of the compression sleeve (32) in the length direction.

3. A safety anchorage device for foundation pit support according to claim 1, wherein: the compression mechanism (3) further comprises a fixing ring (34), a first fixing rod (341) and a second fixing rod (342); the utility model discloses a drill bit, including solid fixed ring (34), first dead lever (341) and second dead lever (342), gu fixed ring (34) rigid coupling is between drill bit (2) and the stock body (1), first dead lever (341) all have many with second dead lever (342), and many first dead lever (341) are arranged around drill bit (2) circumference interval, first dead lever (341) one end is articulated with solid fixed ring (34), and first dead lever (341) other end is articulated with second dead lever (342), the one end that first dead lever (341) were kept away from in second dead lever (342) is articulated with compression ring (31) that are closest to solid fixed ring (34), the length of first dead lever (341) is greater than second dead lever (342).

4. A safety anchorage device for foundation pit support according to claim 2, wherein: the compression mechanism (3) further comprises a compression pipe (33), and the compression pipe (33) is fixedly connected with a compression ring (31) far away from the drill bit (2).

5. A safety anchorage device for foundation pit support according to claim 4, wherein: the anchor rod body (1) is of a hollow structure, and a plurality of first grouting openings are uniformly formed in one side close to the drill bit (2) in the circumferential direction of the anchor rod.

6. A safety anchorage device for foundation pit support according to claim 5, wherein: a plurality of second grouting openings (331) are uniformly formed in the tube wall of the compression tube (33), and the second grouting openings (331) correspond to the first grouting openings one by one.

7. A safety anchorage device for foundation pit support according to claim 1, wherein: the drill bit (2) is of a hollow structure, and a plurality of third grouting openings (4) are uniformly formed in the drill bit (2).

8. A safety anchorage device for foundation pit support according to claim 1, wherein: and a grouting plug (5) is arranged at one end of the anchor rod body (1) far away from the drill bit (2).

9. A safety anchorage device for foundation pit support according to claim 7, wherein: the drill bit (2) is wrapped with a degradable plastic film.