CN110004928A - A self-expanding anti-floating anchor - Google Patents

Abstract

The invention discloses a self-expanding body anti-floating anchor rod, which relates to the technical field of construction engineering. The expansion anchoring mechanism is set on the main rod, the driving part is sleeved on the expansion anchoring mechanism, and the driving part drives the expansion anchoring mechanism to expand radially and move axially along the main rod to perform hole reaming action. The invention drives the expanding body anchoring mechanism to expand in the radial direction and move along the axial direction of the main rod to carry out the hole expanding action through the driving member, thereby widening the hole diameter of the deep hole, the hole expanding is accurate in positioning and the shape is fixed. The self-expanding body anti-floating anchor rod of the invention has the advantages of simple structure, convenient operation and good anti-floating effect.

Description

A self-expanding anti-floating anchor

technical field

The invention relates to the technical field of construction engineering, in particular to a self-expanding anti-floating anchor rod.

Background technique

With the increasing development of the national economy, urban construction has been implemented on a large scale. In order to fully develop and utilize the underground space, the use of buried underground structures as garages and other functions is gradually increasing. With the emergence of high-rise and super-high-rise buildings, the foundation is buried deeper and deeper. For the case where the underground structure has a large building area, a deep foundation, and a relatively small number of building layers, when the groundwater level is high, the self-weight of the building structure is not enough to resist the buoyancy of the groundwater. Therefore, it is necessary to use anti-floating anchors to resist the buoyancy of groundwater on buildings.

In order to improve the bearing capacity of the anti-floating bolt, the volume of the bolt hole is usually enlarged in the anchoring section. The commonly used high-pressure water scours the rock and soil or the blasting method causes the hole shape to be irregular or the mechanical parameters of the rock and soil body to decrease. It is more economical to develop new anchorages, improve the safety protection and reinforcement capabilities of anchorages, and reduce the loss of construction materials and equipment.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a self-expanding body anti-floating anchor rod, which can be radially opened in the pre-digged foundation hole to carry out the reaming action, the reaming position is accurate, the shape is fixed, the structure is simple, the operation is convenient, Good anti-floating effect.

To achieve the above object, the present invention has adopted the following technical solutions:

A self-expanding body anti-floating anchor rod, the self-expanding body anti-floating anchor rod is a pressure-bearing self-expanding body anchor rod, including a main rod, an expanding body anchoring mechanism and a driving part, and the expanding body anchoring mechanism is arranged on the main rod. The driving member is sleeved on the expanding anchoring mechanism, and the driving member drives the expanding anchoring mechanism to expand in the radial direction and move along the axial direction of the main rod to carry out the reaming action.

Further, the expansion anchoring mechanism includes an upper nut and a lower nut, the upper nut is hinged with several upper reaming arms, the lower nut is hinged with several lower reaming arms, and the upper and lower reaming arms are hingedly connected one by one.

Further, the upper nut includes a nut body and a plurality of hinge seats fixed on the peripheral surface of the nut body, and the hinge seats are provided with hinge holes; the shape of the lower nut is the same as that of the upper nut.

Further, the driving part includes a sleeve and a driving part. When the sleeve abuts the upper nut, the driving part is sleeved outside the upper nut. When the sleeve is rotated, the driving part pushes the hinge seat, thereby driving the upper nut to rotate.

Further, the driving part is a claw clamp distributed outside the casing, the claw clamp is sleeved outside the upper nut, and each clamping claw of the claw clamp is respectively located between two adjacent hinge seats of the upper nut.

Further, both ends of the upper reaming arm and the lower reaming arm are provided with pin holes, the upper reaming arm and the upper nut, the lower reaming arm and the lower nut, the upper reaming arm and the lower reaming arm. The arms are hingedly connected by bolts.

Further, a spring is arranged between the upper nut and the lower nut, and the two ends of the spring push the upper nut and the lower nut respectively, so that the upper and lower reaming arms are folded toward the middle, so as to reduce the self-expanding body resistance. The overall cross section of the floating anchor rod, so that the self-expanding anti-floating anchor rod can be smoothly lowered to the designated position before reaming.

Further, the self-expanding body anti-floating anchor rod also includes a threaded pipe, which is fixedly connected to the lower end of the main rod, and the outer circumferential surface of the threaded pipe is provided with an external thread that matches the internal thread of the upper nut and the lower nut. , the expansion anchoring mechanism moves up or down along the threaded pipe under the action of the driving member.

Further, the upper part of the threaded pipe is a guide section, the outer surface of the guide section is a smooth circumferential surface, the guide section extends to the top of the threaded pipe, and the top of the threaded pipe is provided with an expanding anchoring mechanism to smoothly slide down from the main rod to the threaded pipe. The chamfer of the guide segment.

Further, the main rod is a finish-rolled threaded steel, the bottom end of the self-expanding anti-floating anchor rod is provided with a bearing plate, and the bearing plate is fixedly connected to the threaded pipe and/or the main rod by welding.

The invention drives the expanding anchoring mechanism to expand radially and move along the axial direction of the main rod through the driving member to carry out the hole expanding action, thereby widening the diameter of the base hole. Keep the end of the driver above the ground so that the operator can easily carry out reaming operations on the ground. The self-expanding body anti-floating anchor rod of the invention has the advantages of simple structure, convenient operation, accurate reaming positioning, fixed shape and good anti-floating effect.

Description of drawings

Fig. 1 is the schematic diagram when the self-expanding body anti-floating anchor is put into the base hole;

Fig. 2 is the schematic diagram of the self-expanding anti-floating anchor rod initially opened in the foundation hole;

Figure 3 is a schematic diagram of self-expanding anti-floating anchor rod reaming;

Fig. 4 is the schematic diagram of pulling out the driver after the hole reaming is completed;

Fig. 5 is the exploded schematic diagram of self-expanding anti-floating anchor rod;

Fig. 6 is the schematic diagram of upper nut;

FIG. 7 is a schematic diagram of a drive member.

Detailed ways

The present invention will now be further described with reference to the accompanying drawings and specific embodiments.

Please refer to FIG. 5 to FIG. 7 , the present invention discloses a self-expanding body anti-floating anchor rod, the self-expanding body anti-floating anchor rod is a pressure-bearing self-expanding body anchor rod, including a main rod 1, an expanding body anchoring mechanism 3 and The driving member 4, the expansion anchoring mechanism 3 is arranged on the main rod 1, the driving member 4 is sleeved on the expansion anchoring mechanism 3, and the driving member 4 drives the expansion anchoring mechanism 3 to expand radially and move axially along the main rod 1 Thereby, the hole reaming action is performed.

Please refer to FIG. 5 and FIG. 6 , the expansion anchoring mechanism 3 includes an upper nut 31 and a lower nut 32, the upper nut 31 is hinged to a number of upper reaming arms 33, the lower nut 32 is hinged to a number of lower reaming arms 34, the upper reaming arms 33 and The lower reaming arms 34 are hingedly connected in one-to-one correspondence.

Referring to FIG. 6 , preferably, the shape of the lower nut 32 is the same as that of the upper nut 31 . The upper nut 31 includes a nut body and a plurality of hinge seats fixed on the peripheral surface of the nut body, and the hinge seats and the nut body are integrally formed. In this embodiment, the number of hinge seats is preferably three, and each hinge seat is evenly distributed along the circumference of the nut body. The hinge seat includes two parallel opposite seat plates 311 , each seat plate 311 is provided with two upper and lower hinge holes, the two upper hinge holes 312 are coaxial, and the two lower hinge holes 313 are coaxial.

As shown in FIG. 5 , each of the upper reaming arms 33 and the lower reaming arms 34 is three in number. Both ends of the upper reaming arm 33 and the lower reaming arm 34 are provided with pin holes, the upper reaming arm 33 and the upper nut 31, the lower reaming arm 34 and the lower nut 32, the upper reaming arm 33 and the lower reaming arm 34 are all hingedly connected by latches. Specifically, the upper reaming arm 33 is connected to the lower hinge hole 313 of the hinge seat of the upper nut 31 through a bolt, and the lower reaming arm 34 is connected to the upper hinge hole 312 of the hinge seat of the lower nut 32 through a bolt.

As shown in FIG. 7 , the driving member 4 includes a sleeve 41 and a driving part 42 , and the driving part 42 is a claw clamp distributed outside the sleeve 41 . The claw clamp in this embodiment is preferably a three-claw clamp. When the sleeve 41 abuts the upper nut 31 , the three-claw clamp is sleeved outside the upper nut 31 , and each claw of the three-claw clamp is located adjacent to the upper nut 31 respectively. between the two hinged seats. When the sleeve 41 is rotated, the three clamping jaws push the hinge seat, thereby driving the upper nut 31 to rotate, that is, driving the entire body expansion anchoring mechanism 3 to rotate. It can be understood that the number of jaws of the driving part 42 can be adjusted according to actual needs, as long as the expanding anchoring mechanism 3 can be pushed to rotate, preferably evenly distributed along the circumferential direction of the expanding anchoring mechanism.

In this embodiment, the self-expanding anti-floating anchor rod further includes a threaded pipe 2, which is fixedly connected to the lower end of the main rod 1, and the outer circumferential surface of the threaded pipe 2 is provided with an inner thread with the upper nut 31 and the lower nut 32 With the corresponding external thread, the expanding anchoring mechanism moves up or down along the threaded pipe 2 under the action of the driving member 4 .

As shown in FIG. 5 , in this embodiment, a bearing plate 5 is provided at the bottom end of the self-expanding anti-floating anchor rod, and the bearing plate 5 is fixedly connected to the threaded pipe 2 and/or the main rod 1 by welding. In this embodiment, preferably, the main rod 1 is a finish-rolled threaded steel, the upper end of the threaded pipe 2 is provided with an internal threaded hole adapted to the finish-rolled threaded steel, and the threaded pipe 2 is fixedly connected to the finish-rolled threaded steel through threads. The lower end of the threaded pipe 2 is welded and fixed to the bearing plate 5 . In other embodiments, the threaded pipe 2 can also be set as a hollow threaded pipe, the lower end of the main rod 1 passes through the threaded pipe 2 and is fixedly connected to the bearing plate 5 , and the bearing plate 5 is welded and fixed to the bottom end surface of the threaded pipe 2 at the same time. It can be understood that, in other embodiments, the main rod and the threaded pipe may be provided as an integrally formed structure, or the main rod may be provided with threads instead of the threaded pipe in this embodiment.

In this embodiment, the upper part of the threaded pipe 2 is provided with a guide section 21 for the upper nut 31 to move up and down. The outer surface of the guide section 21 is a smooth circumferential surface, and the guide section 21 extends to the top of the threaded pipe 2. There is a chamfer for the upper nut 31 to slide smoothly from the main rod 1 to the guide section 21 of the threaded pipe 2 .

As shown in FIG. 3 and FIG. 5 , in this embodiment, a spring 6 is provided between the upper nut 31 and the lower nut 32, and the two ends of the spring 6 push the upper nut 31 and the lower nut 32 respectively, so that the upper reamer arm 33 and the lower reaming arm 34 are folded toward the middle to reduce the overall cross-section of the self-expanding anti-floating anchor rod, so that the self-expanding anti-floating anchor rod can be smoothly lowered to the designated position before reaming, that is, it is convenient to place it. into the deep hole dug.

The present invention works as follows:

(1) As shown in FIG. 1, put the expansion anchoring mechanism 3 into the pre-drilled deep hole, and set the three-jaw clamp of the driver 4 on the outside of the upper nut 31, and the bottom end of the driver 4 is connected to the upper nut. 31 abuts, and the upper end of the driving member 4 is exposed on the ground.

(2) As shown in FIG. 2 , the operator presses the driving member 4 vertically downward on the ground, the spring 6 is compressed, and the upper reaming arm 33 and the lower reaming arm 34 are opened to a certain angle. There is space below the expansion anchoring mechanism 3 , and the soil will fall into the hole below the expansion anchoring mechanism 3 .

(3) As shown in Fig. 3, fix the finishing threaded steel, rotate the driving member 4, and the driving member 4 drives the entire body expansion anchoring mechanism 3 to move down along the threaded pipe 2 until the upper nut 31 is also screwed into the threaded pipe 2 on the thread. At this time, the expansion angle has been fixed, and then the driving member 4 is rotated, so that the expansion anchoring mechanism 3 can perform the up-and-down reaming movement.

(4) As shown in Fig. 4, after the reaming is completed, pull out the driver 4, lock it after maintenance, and then perform grouting.

It should be noted that when the angle between the upper reaming arm 33 and the threaded pipe 2 is 45°, the reaming effect is the best, and the lower reaming arm 34 is turned to a horizontal position at this time. If the soil is too hard, the expansion anchoring mechanism 3 cannot be fully opened, and the expansion anchoring mechanism 3 will be in a drum shape.

The above records are only examples of utilizing the technical content of this creation, and any modifications and changes made by those skilled in the art using this creation are all within the scope of the patent claimed in this creation, and are not limited to those disclosed in the embodiments.

Claims (10)

1. a kind of expand body anti-float anchor rod certainly, it is characterised in that: described is pressure-bearing type from enlarging anchor rod from body anti-float anchor rod is expanded, and is wrapped It including mobile jib, expands body anchoring mechanism and actuator, expand body anchoring mechanism and be located on mobile jib, actuator covers on expanding body anchoring mechanism, Actuator driving expands body anchoring mechanism and radially opens and move axially to carry out reaming movement along mobile jib.

2. according to claim 1 from expansion body anti-float anchor rod, it is characterised in that: the expansion body anchoring mechanism includes upper spiral shell Female and lower nut, the hinged several upper reamer arms of top nut, the hinged several reaming arms of lower nut, upper reamer arm and reaming arm one One corresponding articulated connection.

3. it is according to claim 2 from expand body anti-float anchor rod, it is characterised in that: the top nut include nut body and Several hinged seats of nut body circumferential surface are fixedly arranged on, hinged seat is equipped with hinge hole；The shape and top nut of the lower nut Shape it is identical.

4. according to claim 3 from expansion body anti-float anchor rod, it is characterised in that: the actuator includes casing and driving Portion, when casing abuts top nut, driving portion covers outside top nut, and then driving portion pushes hinged seat to rotating casing, thus on driving Nut rotation.

5. according to claim 4 from expansion body anti-float anchor rod, it is characterised in that: the driving portion is to be distributed in outside casing Claw clip, claw clip is covered outside top nut, each clamping jaw of claw clip is located between adjacent two hinged seat of top nut.

6. according to claim 2 from expansion body anti-float anchor rod, it is characterised in that: the upper reamer arm and reaming arm two The both ends of person are equipped with pin hole, between upper reamer arm and top nut, reaming arm and lower nut, upper reamer arm and reaming arm It is realized and is articulated and connected by bolt.

7. according to claim 2 from expansion body anti-float anchor rod, it is characterised in that: set between the top nut and lower nut There is a spring, both ends of the spring pushes top nut and lower nut respectively, collapses reamer arm and reaming arm to centre, to reduce From the whole cross section for expanding body anti-float anchor rod, will smoothly to be transferred from body anti-float anchor rod is expanded to designated position before reaming.

8. according to claim 2 from expanding body anti-float anchor rod, it is characterised in that: described to further include from expanding body anti-float anchor rod Screwed pipe, screwed pipe are fixedly connected with mobile jib lower end, and screwed pipe outer circumference surface is equipped with the internal screw thread with top nut and lower nut Compatible external screw thread, expanding body anchoring mechanism, threadingly pipe is moved up or is moved down under the action of actuator.

9. according to claim 8 from expansion body anti-float anchor rod, it is characterised in that: the screwed pipe top is guide section, The outer surface of guide section is smooth periphery, and guide section extends to screwed pipe top, and screwed pipe top is equipped with to expand body anchor Gu mechanism is smoothly snapped down to the chamfering of screwed pipe guide section from mobile jib.

10. from expansion body anti-float anchor rod according to claim 8 to 9 any one, it is characterised in that: the mobile jib is essence Screw-thread steel is rolled, described is equipped with loading plate from expansion body anti-float anchor rod bottom end, and loading plate is consolidated by welding and screwed pipe and/or mobile jib Fixed connection.