CN214657000U

CN214657000U - Bag type lower end anti-corrosion anchor rod with enlarged head

Info

Publication number: CN214657000U
Application number: CN202120425843.1U
Authority: CN
Inventors: 赵津梁; 赵旭鑫; 贺潇; 赵旭琳
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-26
Filing date: 2021-02-26
Publication date: 2021-11-09
Anticipated expiration: 2031-02-26

Abstract

The utility model relates to a take anticorrosive stock of bag formula lower extreme of enlarged footing. The bag type lower end anti-corrosion anchor rod with the expansion head comprises a bearing seat, an anchor rod body, a bearing end connecting piece, a guide cap and a bag. The direction cap encloses into the protection chamber of the end protection of bearing to the stock body of rod with bearing the seat, bears the weight of the setting of end connecting piece and at the protection intracavity, bears the weight of the seat and is equipped with the injected hole with protection chamber intercommunication, and when the slip casting in to the bag, the injected hole can make grout get into in the direction cap. When the grout is injected into the sack bag, the grout hole can make grout pass through the grout hole and get into in the direction cap, protects the linkage segment tip gap of the fastener in the direction cap to play and prevented that underground corrosive gas or moisture from getting into in the direction cap, play the waterproof anticorrosive purpose of bearing seat and stock body of rod junction, reduced because bearing seat and stock body of rod junction lose bearing capacity's probability because of corroding.

Description

Bag type lower end anti-corrosion anchor rod with enlarged head

Technical Field

The utility model relates to a take anticorrosive stock of bag formula lower extreme of enlarged footing.

Background

The lower end of the existing anchor rod body is a bearing end, the bearing end is in stop fit with the bearing seat in the extension direction of the anchor rod body through the bearing end connecting piece, moisture and humidity in the stratum can enter the matching part of the bearing end connecting piece and the anchor rod body, the matching part is easily corroded or corroded, threads are damaged, and the bearing capacity between the threads is weakened. When the ground surface building swings in typhoon and earthquake environments, the anchor rod body is pulled, the load capacity between the anchor rod body and the threaded connecting piece is weakened, the bearing plate and the blocking nut thereof can slip off from the anchor rod body, the anchoring assembly can be integrally failed, and the danger of collapse or overturn of the body of the ground surface building or other buildings can be caused.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an improvement bears the weight of seat and takes the anticorrosive stock of bag formula lower extreme of enlarged footing with the waterproof anticorrosion performance of stock body of rod junction.

The utility model discloses an anticorrosive stock of bag formula lower extreme of area enlarged footing adopts following technical scheme:

anticorrosive stock of bag formula lower extreme of area enlarged head includes:

a bearing seat;

the lower end of the anchor rod body is a bearing end penetrating through the bearing seat;

the bearing end connecting piece is in threaded connection with the bearing end of the anchor rod body, and the anchor rod body is in stop fit with the bearing seat in the extension direction of the anchor rod body through the bearing end connecting piece;

the guide cap is fixed on the bearing seat;

the bag is sleeved outside the anchor rod body and is fixed with the bearing seat;

the direction cap encloses into the protection chamber of the end protection of bearing to the stock body of rod with bearing the seat, bears the weight of the setting of end connecting piece and at the protection intracavity, bears the weight of the seat and is equipped with the injected hole with protection chamber intercommunication, and when the slip casting in to the bag, the injected hole can make grout get into in the direction cap.

The beneficial effects are that: the utility model discloses a take the slip casting hole that is provided with and protects the chamber intercommunication on the carrier seat of the anticorrosive stock of bag formula lower extreme of enlarged footing, in the time of the slip casting in to the bag, the slip casting hole can make the grout pass through in the slip casting hole gets into the direction cap, the end of bearing in the direction cap protects, thereby played and prevented that the underground corrosion nature is gaseous or moisture gets into in the direction cap, play and to bearing seat and the waterproof anticorrosive purpose of stock body of rod cooperation department, reduced because bear seat and stock body of rod junction lose bearing capacity's probability because of corroding.

Further, the number of the grouting holes is at least two. Set up two at least injected holes, when the injected cement thick liquid, can utilize an injected hole exhaust, make the protection intracavity of inflow direction cap that grout can be better.

Furthermore, the bearing seat comprises a bearing plate, the guide cap is fixed on one side of the bearing plate, a bearing seat sleeve is fixed on one side of the bearing plate, which is opposite to the guide cap, one end of the bag is fixed on the bearing seat sleeve, and the grouting hole is formed in the bearing plate. The cement slurry enters the guide cap.

Furthermore, one end of the bag is fixed on the bearing seat through a hoop, the bearing seat is provided with a hoop matching annular groove, and the hoop is tightly hooped in the hoop matching annular groove. Staple bolt cooperation annular and staple bolt cooperation, the staple bolt cramps in staple bolt cooperation inslot, and the removal of restriction staple bolt prevents the staple bolt drunkenness from top to bottom, improves the fixed effect of staple bolt.

Further, bear the seat and include the loading board, the direction cap is fixed in one side of loading board, and one side of loading board back to the direction cap is fixed with bears the weight of the seat cover, bears and is equipped with annular protrusion on the seat cover, and the loading board is followed the protruding periphery that bears the weight of the seat cover and is set up to make loading board, bear the weight of the seat cover and set up the annular protrusion on bearing the seat cover and enclose staple bolt cooperation annular. The annular bulge on the bearing seat cover forms the hoop matching ring groove, and the structure is simple.

Furthermore, the annular bulge is formed by outwards protruding the sleeve wall of the bearing sleeve after being formed by rolling. The molding mode is simple and the cost is low.

Furthermore, the bag type lower end anti-corrosion anchor rod with the expansion head comprises a fixed pipe, the lower end of the fixed pipe is fixed with the bearing seat, the fixed pipe is further fixedly connected with a bag seat, and two ends of a bag are respectively fixed on the bearing seat and the bag seat. The fixed pipe is connected with the bag seat and the bearing seat, so that the anchor rod can be conveniently installed.

Further, the anchor rod body is provided with a sealing nut, the sealing nut is positioned on the upper side of the bag seat and is in sealing fit with the bag seat, and the sealing nut and the bearing end connecting piece tension the part of the anchor rod body positioned in the fixing rod. The slurry is not easy to flow out when entering the bag.

Furthermore, the bearing end connecting piece is an anchoring nut in threaded connection with the bearing end. Simple structure and firm connection.

Drawings

Fig. 1 is a schematic structural view of a capsule type lower end anti-corrosion anchor rod with an enlarged head according to embodiment 1 of the present invention;

fig. 2 is a partial structural schematic view of a capsule type lower end anti-corrosion anchor rod embodiment 1 with an enlarged head according to the present invention;

FIG. 3 is an enlarged view of portion A of FIG. 1;

FIG. 4 is an enlarged view of portion B of FIG. 1;

fig. 5 is a schematic structural view of a capsule type lower end anti-corrosion anchor rod of the present invention in embodiment 2;

fig. 6 is a partial structural schematic view of a capsule type lower end anti-corrosion anchor rod embodiment 2 with an enlarged head according to the present invention;

FIG. 7 is an enlarged view of portion C of FIG. 5;

FIG. 8 is an enlarged view of portion D of FIG. 5;

in fig. 1 to 4: 1. an anchor rod body; 101. a carrying end; 102. stretching the end; 2. a fixed tube; 3. an inner pouch; 4. an outer pouch; 5. an outer bag seat; 6. a bearing seat; 601. grouting holes; 602. a carrier plate; 603. a load bearing seat cover; 7. an inner bag seat; 8. a grouting pipe; 9. a slip pipe check valve; 10. a pressure control valve; 11. a guide cap; 111. a protective cavity; 12. an anchor nut; 13. an exhaust valve; 14. hooping; 15. an outer bag base plate; 16. an outer bag seat cover; 17. an annular projection; 18. the hoop is matched with the ring groove; 19. an elastic sealing gasket; 20. a pouch grouting pipe; 25. and (6) plugging the nut.

In fig. 5 to 8: 1. an anchor rod body; 101. a carrying end; 102. stretching the end; 2. a fixed tube; 6. a bearing seat; 601. grouting holes; 602. a carrier plate; 603. a load bearing seat cover; 8. a grouting pipe; 9. a slip pipe check valve; 11. a guide cap; 111. a protective cavity; 12. an anchor nut; 13. an exhaust valve; 14. hooping; 17. an annular projection; 18. the hoop is matched with the ring groove; 19. an elastic sealing gasket; 21. a pouch; 22. a bag seat; 23. a pouch seat plate; 24. a capsular bag seat cover; 25. and (6) plugging the nut.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, may be 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. Also, 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. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The terms "upper", "lower", "front", "rear", "left", "right", and the like indicate orientations or positional relationships that are assumed to be merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element so referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

The features and properties of the present invention are described in further detail below with reference to examples.

The utility model relates to a take anticorrosive stock of bag formula lower extreme of enlarged footing embodiment 1:

the anchor rod in the embodiment can be suitable for temporary anchoring occasions, such as foundation pit supporting, and can also be suitable for permanent anchoring occasions, such as mountain anchoring, anti-floating anchoring of underground buildings and the like.

As shown in fig. 1 and 2, the bag type lower end anticorrosion anchor rod with an enlarged head comprises an anchor rod body 1, a fixing pipe 2, a bearing seat 6, an inner bag 3 and an outer bag 4.

The lower end of the fixed tube 2 is fixed with the bearing seat 6, the upper end of the fixed tube 2 is fixed with the outer bag seat 5, the middle part is fixed with the inner bag seat 7, and the inner bag seat 7 is positioned in the outer bag 4. The fixing tube 2 is used for the anchor rod body to pass through. In this embodiment, one fixing tube is provided, in other embodiments, two or more fixing tubes may be provided, two or more anchor rod bodies may be provided and correspond to the fixing tubes one by one, and the anchor rod bodies may be steel bars or steel cables.

The upper and lower both ends of outer bag 4 are fixed respectively on outer bag seat 5 and bear seat 6, and interior bag 3 is close to the lower extreme of fixed pipe 2 and keeps away from the upper end of fixed pipe 2, and interior bag 3 is in outer bag 4, and interior bag 3 is close to 4 lower extremes of outer bag and keeps away from the setting of 4 upper ends of outer bag.

The upper and lower both ends of inner bag 3 are fixed respectively on inner bag seat 7 and bear seat 6, bear and be fixed with direction cap 11 on the seat 6, bear and be equipped with the slip casting hole 601 with direction cap 11 intercommunication on the seat 6, slip casting hole 601 and inner bag 3 intercommunication, when the slip casting to inner bag 3, inject into grout in the direction cap 11 through slip casting hole 601 when injecting inner bag 3. Upper effect

The inner bag 3 is sleeved outside the fixing tube 2 and fixed inside the outer bag 4. During grouting, firstly, grouting is carried out in the inner bag 3 and the guide cap 11, then cement slurry overflowing from the inner bag 3 enters the outer bag 4 to fill the outer bag 4, and the concrete structure is as follows:

as shown in fig. 1, a grouting pipe 8 communicated with a grouting device penetrates through an outer bag seat 5 and an inner bag seat 7 and then extends into the inner bag 3, a grouting pipe check valve 9 is arranged on a part of the grouting pipe 8 extending into the inner bag 3, the grouting pipe check valve 9 has a set opening pressure, the opening pressure is preferably 0.5-2.5Mpa, and grouting is performed on the inner bag 3 after the grouting pressure reaches the opening pressure of the grouting pipe check valve 9. In other embodiments, the grouting pipe may not extend into the inner bag, for example, a through hole is provided on the inner bag seat, the grouting pipe is directly welded at the orifice of the through hole, and the grouting pipe check valve may be disposed outside the inner bag.

A bag grouting pipe 20 is fixed on the inner bag seat 7, one end of the bag grouting pipe 20 extends into the outer bag 4, the other end of the bag grouting pipe extends into the inner bag 3, a grouting channel is formed in an internal channel of the bag grouting pipe 20, grouting can be performed on the outer bag 4 through the grouting channel, and a pressure control valve 10 is arranged on a part of the bag grouting pipe 20 extending into the outer bag 4. The pressure control valve 10 is used for opening a grouting channel after the pressure of cement slurry in the inner bag 3 reaches a certain value, and the water supply slurry enters the outer bag 4 through the grouting channel. In this embodiment, the pressure control valve 10 is a one-way check valve, the pressure control valve 10 includes a valve hole and an elastic sleeve, the valve hole is communicated with the grouting channel and is arranged on the bag grouting pipe 20, the elastic sleeve is sleeved on the valve hole, and after the cement slurry pressure in the inner bag exceeds a certain value, the elastic sleeve deforms under the cement slurry pressure to open the grouting channel. In other embodiments, the pressure control valve 10 may also be a ball valve.

In this embodiment, in order to further make the grouting in the inner bag 3 more sufficient, the opening pressure of the pressure control valve 10 is greater than the opening pressure of the grouting pipe check valve 9, and the opening pressure of the pressure control valve 10 is preferably 1 to 3 Mpa. By increasing the opening pressure of the pressure control valve 10, the cement paste in the inner bag 3 can more fully open the inner bag 3.

The present embodiment in which the pouch injection tube 20 is provided on the top of the inner pouch 3 can prevent the pouch injection tube 20 from being clogged.

As shown in fig. 1 and 3, the outer bag holder 5 in the present embodiment includes an outer bag holder plate 15 and an outer bag holder 16 fixed to one side of the outer bag holder plate 15. As shown in fig. 1, the outer bag seat cover 16 is fixed to the lower side of the outer bag seat plate 15.

As shown in fig. 4, the carrier seat 6 includes a carrier plate 602 and a carrier seat 603, the carrier seat 603 is fixed on the upper side of the carrier plate 602, and the inner bag seat 7 includes an inner bag seat plate and an inner bag seat cover, the inner bag seat cover is fixed on the lower side of the inner bag seat plate.

In this embodiment, the ends of the inner bag 3 and the outer bag 4 are fixed by the hoop 14, the mating structures of the hoop 14 and the carrying seat 6, the inner bag seat 7 and the outer bag seat 5 are the same, and the outer bag seat 5 is taken as an example for description.

The wall roll forming of outer bag seat cover 16 is followed the evagination and is formed with annular bulge 17 to outer, the external diameter of outer bag seat board 15 is greater than the external diameter of outer bag seat cover 16, the outer border of outer bag seat board 15 forms staple bolt cooperation annular 18 with annular bulge 17, a lateral wall of staple bolt cooperation annular 18 is formed by annular bulge 17, staple bolt 14 all cramps at staple bolt cooperation annular 18, prevent staple bolt 14 drunkenness from top to bottom, improve the stability of inner bag 3 and outer bag 4. An elastic sealing gasket 19 is arranged in the hoop matching ring groove 18, and the elastic sealing gasket 19 is arranged between the outer bag seat 5 and the outer bag, so that the sealing performance is improved.

Because the inner bag 3 and the outer bag 4 need to be fixed on the bearing seat 6, two hoop matching ring grooves 18 are arranged on the bearing seat 6, and the two hoop matching ring grooves 18 are surrounded by the bearing seat cover 603, two annular protrusions 17 which are arranged on the bearing seat cover 603 and formed by outward protrusion after the sleeve wall of the bearing seat cover is roll-formed, and the edge of the bearing plate 602. The bearing seat cover, the inner bag seat cover and the outer bag seat cover in the embodiment are all bag seat covers used for fixing the bag.

As shown in fig. 4, in this embodiment, a guiding cap 11 is fixed on the bearing seat 6, and the lower end of the guiding cap 11 is a tapered tip. One end of the anchor rod body 1 is a bearing end 101 which is in stop fit with the bearing seat 6 in the axial direction，The other end is a tensioning end 102 for the jack to apply force to tension the anchor rod body. Bear end 101 and stretch into in the direction cap 11 after passing fixed pipe 2, bear end 101 and be provided with anchor nut 12, because bear end 101 be provided with anchor nut 12 screw-thread fit's external screw thread, in order to avoid anchor nut 12 and bear end 101 corrosion, direction cap 11 is enclosed construction, and at the internal protection chamber 111 that protects to bearing end 101, protection chamber 111 separates with the outside, be equipped with the grout hole 601 with protection chamber 111 intercommunication on the loading board 602 that bears seat 6, grout hole 601 and interior bag 3 intercommunication, when the grouting pipe 8 is to the injection of inner bag 3, grout can be injected into in grout hole 601 direction cap 11 through grout hole 601, the grout of injecting can protect anchor nut 12 and the screw thread that bears end 101, improve the life of stock. The anchor nut of this embodiment constitutes a load bearing end connector that is connected to the load bearing end. In other embodiments, the bearing end connecting piece can be a split type conical clamping piece, the bearing plate is provided with a conical hole, and the bearing end is fixed on the bearing plate through the wedging action of the conical clamping piece.

In this embodiment, two grouting holes 601 are provided, one of the two grouting holes 601 is used for injecting cement slurry, and the other is used for exhausting gas when injecting cement slurry, so as to facilitate the injection of cement slurry.

When grout pours into the direction cap 11 in, because anchor nut 12 and bear and do not have sealedly between the seat 6, grout flows into fixed pipe 2 from the clearance easily, at last, flow out through outer bag seat 5, in order to solve this problem, set up plugging nut 25 on the stock body of rod 1, plugging nut 25 is in outer bag seat 5 upside and with outer bag seat 5 seal fit, be provided with sealed fat between plugging nut 25 and the stock body of rod, plugging nut and anchor nut 12 are taut with the part that the stock body of rod 1 is in fixed pipe 2, and under plugging nut's sealing action, get into the grout in fixed pipe 2 through the space between anchor nut 12 and the seat 6, can not flow out in the fixed pipe 2.

In this embodiment, in order to facilitate air exhaust, the air exhaust valve 13 is disposed on the outer bag seat plate 15, and air in the outer bag 4 can be exhausted through the air exhaust valve 13, which is beneficial to injecting cement slurry in the outer bag 4.

Use the utility model discloses the anticorrosive stock of bag formula lower extreme of enlarged head in area is when the anchor operation, at first punches the target location, then will take the anticorrosive stock of bag formula lower extreme of enlarged head to insert the hole of having beaten, reach the target location after, through slip casting equipment injection grout in to slip casting pipe 8, slip casting pipe check valve 9 is opened, grout passes through 8 slip casting pipes 3 slip casting to interior bag, after the slip casting is full in 3 interior bag bags of interior bag, also be full of grout in the protection chamber 111 of guide cap 11. After the inner bag 3 is filled with cement paste, the pressure in the inner bag 3 is increased, and after the pressure in the inner bag 3 reaches the opening pressure of the pressure control valve 10, the cement paste is injected into the outer bag 4 through the pressure control valve 10 until the grouting of the outer bag 4 is completed.

Because the inner bag 3 is positioned at the lower position in the outer bag 4, the lower part of the outer bag 4 can be firstly propped open by the inner bag 3, and the lower part of the outer bag 4 is prevented from forming a cone tip to influence the anchoring effect. The opening pressure of the pressure control valve 10 is greater than that of the grouting pipe check valve 9, so that the inner bag 3 can be fully opened, the bottom of the outer bag is fully supported, and the anchoring effect is further improved.

The bottom of the outer bag can overcome the resistance of sediment at the bottom of the anchor rod hole through the arranged inner bag, and the outer bag is fully opened, so that the lower end of the expanding head is larger in size, and the bearing effect is better.

The utility model discloses a take anticorrosive stock of bag formula lower extreme of enlarged footing embodiment 2:

As shown in fig. 5 and 6, the sac type lower end anticorrosion anchor rod with an enlarged head comprises an anchor rod body 1, a fixing pipe 2, a bearing seat 6 and a sac 21.

The lower end of the fixed tube 2 is fixed with the bearing seat 6, the upper end of the fixed tube 2 is fixed with the bag seat 22, and the upper end and the lower end of the bag 21 are respectively fixed on the bag seat 22 and the bearing seat 6. The fixing tube 2 is used for the anchor rod body to pass through. In this embodiment, one fixing tube is provided, in other embodiments, two or more fixing tubes may be provided, two or more anchor rod bodies may be provided and correspond to the fixing tubes one by one, and the anchor rod bodies may be steel bars or steel cables.

The bearing seat 6 is fixed with a guide cap 11, the bearing seat 6 is provided with a grouting hole 601 communicated with the guide cap 11, the grouting hole 601 is communicated with the bag 21, and when grouting is carried out on the bag 21, cement slurry is injected into the guide cap 11 through the grouting hole 601. The concrete structure is as follows:

the grouting pipe 8 communicated with the grouting equipment penetrates through the bag seat 22 and then extends into the bag 2, a grouting pipe check valve 9 is arranged on the part of the grouting pipe 8 extending into the bag 21, the grouting pipe check valve 9 has set opening pressure, the opening pressure is preferably 0.5-2.5Mpa, and grouting is carried out on the bag 21 after the grouting pressure reaches the opening pressure of the grouting pipe check valve 9.

As shown in fig. 5 and 7, in the present embodiment, the carrying seat 6 includes a carrying plate 602 and a carrying seat cover 603 fixed on one side of the carrying plate 602, as shown in fig. 7, the bag seat cover 24 of the bag seat 22 is fixed on the lower side of the bag seat plate 23, and the carrying seat cover 603 of the carrying seat 6 is fixed on the upper side of the carrying plate 602, in the present embodiment, the end of the bag 21 is fixed by the hoop 14, the hoop 14 is the same as the matching mechanism of the carrying seat 6 and the bag seat 22, and the bag seat 22 is taken as an example for description below.

Annular bulge 17 is formed to the evagination after the mantle wall roll forming of bag seat cover 24, and the external diameter of bag bedplate 23 is greater than the external diameter of bag seat cover 24, and the outer fringe of bag bedplate 23 forms staple bolt cooperation annular 18 with annular bulge 17, and staple bolt 14 is all cramped at staple bolt cooperation annular 18, and a lateral wall of staple bolt cooperation annular 18 is formed by annular bulge 17, prevents staple bolt 14 drunkenness from top to bottom, improves the stability of bag 21. The hoop matching ring groove 18 is internally provided with an elastic sealing gasket 19, and the elastic sealing gasket 19 is arranged between the bearing seat 6 and the bag 21, so that the sealing performance can be improved.

As shown in fig. 8, in this embodiment, a guiding cap 11 is fixed on the bearing seat 6, and the lower end of the guiding cap 11 is a tapered tip. AnchorOne end of the rod body 1 is a bearing end 101 which is in stop fit with the bearing seat 6 in the axial direction，The other end is a tensioning end 102 for the jack to apply force to tension the anchor rod body. Bear end 101 and stretch into in the direction cap 11 after passing fixed pipe 2, bear end 101 and be provided with anchor nut 12, because bear end 101 be provided with anchor nut screw-thread fit's external screw thread, in order to avoid anchor nut 12 and bear end 101 corrosion, direction cap 11 is enclosed construction, and at the internal protection chamber 111 that protects to bearing end 101, protection chamber 111 separates with the outside, be equipped with the grout hole 601 with protection chamber 111 intercommunication on bearing plate 602 who bears seat 6, grout hole 601 and bag 21 intercommunication, when the slip casting pipe 8 is to bag 21 slip casting, grout can be through injecting grout into in the direction cap 11 through grout hole 601, the grout of injection can protect anchor nut 12 and the screw thread that bears end 101, improve the life of stock. The anchor nut in this embodiment constitutes a load bearing end connector that is connected to the load bearing end. In other embodiments, the bearing end connecting piece can be a split type conical clamping piece, the bearing plate is provided with a conical hole, and the bearing end is fixed on the bearing plate through the wedging action of the conical clamping piece.

When grout pours into the direction cap 11 in, because anchor nut 12 and bear and do not have sealedly between the seat 6, grout flows into fixed pipe 2 from the clearance easily, at last, flow out through outer bag seat 5, in order to solve this problem, set up plugging nut 25 on the stock body of rod 1, plugging nut 25 is in outer bag seat 5 upside and with outer bag seat 5 seal fit, be provided with sealed fat between plugging nut 25 and the stock body of rod, plugging nut 25 and anchoring nut 12 are taut with the part that the stock body of rod 1 is in fixed pipe 2, and under plugging nut 25's sealing action, get into the grout in the fixed pipe 2 through the space between anchor nut 12 and the seat 6, can not flow out in the fixed pipe 2.

In this embodiment, for convenience of air exhaust, the air exhaust valve 13 is disposed on the bag seat plate 23 of the bag seat 22, and the air in the bag 21 can be exhausted through the air exhaust valve 13, which is beneficial to injecting the cement slurry in the bag 21.

Use the utility model discloses the anticorrosive stock of bag formula lower extreme of enlarged head in area is when the anchor operation, at first punch to the target location, then will take the anticorrosive stock of bag formula lower extreme of enlarged head to insert the hole of beating, reach the target location after, through slip casting equipment to injecting cement paste in the slip casting pipe 8, slip casting pipe check valve 9 is opened, cement paste passes through slip casting pipe 8 and to bag 21 slip casting, inject cement paste in the direction cap 11 through slip casting hole 601 simultaneously, accomplish until bag 21 slip casting.

The utility model discloses a take specific embodiment 3 of the anticorrosive stock of bag formula lower extreme of enlarged footing, the structure of the anticorrosive stock of bag formula lower extreme of enlarged footing in this embodiment only lies in with the difference of above-mentioned embodiment: the three grouting holes are arranged, and when cement paste is injected, the redundant grouting holes play a certain air exhaust role. In other embodiments, the number of the grouting holes may be increased as needed, for example, four or more grouting holes are provided. In other embodiments, when the grouting holes are large, only one grouting hole can be arranged, and therefore smooth grouting of cement slurry into the protective cavity can be guaranteed.

The utility model discloses a take specific embodiment 4 of the anticorrosive stock of bag formula lower extreme of enlarged footing, the structure of the anticorrosive stock of bag formula lower extreme of enlarged footing in this embodiment only lies in with the difference of above-mentioned embodiment: the bearing seat cover is internally provided with a groove, the bearing seat cover and the bearing plate enclose a city, the hoop is matched with the annular groove, the hoop is tightly hooped in the groove, and the hoop is prevented from moving up and down. In other embodiments, a plurality of protrusions can be adopted to replace the annular protrusion, and the hoop is prevented from moving by the plurality of protrusions.

The utility model discloses a take specific embodiment 5 of the anticorrosive stock of bag formula lower extreme of enlarged footing, the structure of the anticorrosive stock of bag formula lower extreme of enlarged footing in this embodiment only lies in with the difference of above-mentioned embodiment: the anchor ear is directly hooped on the bearing seat, and the bearing seat is not provided with the anchor ear matching ring groove. In other embodiments, the outer bag and the inner bag are fixed on the bearing seat in a bonding mode, and the bearing seat does not need to be provided with a hoop matching annular groove.

The utility model discloses a take concrete embodiment 6 of the anticorrosive stock of bag formula lower extreme of enlarged footing, the structure of the anticorrosive stock of bag formula lower extreme of enlarged footing in this embodiment only lies in with the difference of above-mentioned embodiment: the lower extreme snap-on of inner bag is on fixed pipe, and this kind of condition is better in the occasion effect of only a fixed pipe, and the protection chamber in the direction cap passes through the injected hole and outer bag intercommunication this moment.

The utility model discloses a take specific embodiment 7 of the anticorrosive stock of bag formula lower extreme of enlarged footing, the structure of the anticorrosive stock of bag formula lower extreme of enlarged footing in this embodiment only lies in with the difference of above-mentioned embodiment: the outer bag seat and the inner bag seat are directly fixed on the anchor rod body, and the outer bag seat and the inner bag seat are not required to be supported by the fixing rod.

The utility model discloses a take specific embodiment 8 of the anticorrosive stock of bag formula lower extreme of enlarged footing, the structure of the anticorrosive stock of bag formula lower extreme of enlarged footing in this embodiment only lies in with the difference of above-mentioned embodiment: in this embodiment, bear the weight of the end connecting piece and be split type toper clamping piece, be provided with the bell mouth on the loading board, bear the weight of the end and fix on the loading board through toper clamping piece wedging action.

The utility model discloses a take concrete embodiment 9 of the anticorrosive stock of bag formula lower extreme of enlarged footing, the structure of the anticorrosive stock of bag formula lower extreme of enlarged footing in this embodiment only lies in with the difference of above-mentioned embodiment: the rubber sleeve is fixed on the part of the anchor rod body in the fixed pipe and is in sealing fit with the fixed pipe, so that cement paste is prevented from flowing out of the fixed pipe. In other embodiments, the anchoring nut can be fixed on the bearing plate, so that cement paste is prevented from entering the fixing pipe from a gap between the anchoring nut and the bearing plate, and the cement paste is prevented from flowing out. In other embodiments, a sealing gasket is arranged between the anchoring nut and the bearing seat for sealing, so that cement slurry is prevented from entering the fixing pipe.

The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. Anticorrosive stock of bag formula lower extreme of area enlarged footing includes:

a bearing seat;

the bearing end connecting piece is in threaded connection with the bearing end of the anchor rod body, and the anchor rod body is in stop fit with the bearing seat in the extension direction of the anchor rod body or is fixed with the bearing seat through the bearing end connecting piece;

the guide cap is fixed on the bearing seat;

the anchor rod body protecting device is characterized in that the guide cap and the bearing seat are enclosed to form a protecting cavity for protecting the bearing end of the anchor rod body, the bearing end extends into the protecting cavity, the bearing seat is provided with a grouting hole communicated with the protecting cavity, and when grouting is performed in the bag, the grouting hole can enable cement paste to enter the guide cap.

2. The capsule type lower end corrosion-resistant anchor rod with the enlarged head according to claim 1, wherein at least two grouting holes are provided.

3. The bag type lower end anticorrosion anchor rod with the enlarged head as claimed in claim 1 or 2, wherein the bearing seat comprises a bearing plate, the guiding cap is fixed on one side of the bearing plate, a bearing seat sleeve is fixed on one side of the bearing plate opposite to the guiding cap, one end of the bag is fixed on the bearing seat sleeve, and the grouting hole is arranged on the bearing plate.

4. The bag type bottom anticorrosion anchor rod with enlarged head of claim 1 or 2, wherein one end of the bag is fixed on the bearing seat by a hoop, the bearing seat is provided with a hoop fitting ring groove, and the hoop is tightly hooped in the hoop fitting ring groove.

5. The bag-type lower end anticorrosion anchor rod with the enlarged head as claimed in claim 4, wherein the bearing seat comprises a bearing plate, the guiding cap is fixed on one side of the bearing plate, a bearing seat cover is fixed on one side of the bearing plate opposite to the guiding cap, an annular protrusion is provided on the bearing seat cover, and the edge of the bearing plate protrudes out of the periphery of the bearing seat cover, so that the hoop matching ring groove is surrounded by the bearing plate, the bearing seat cover and the annular protrusion provided on the bearing seat cover.

6. The sac type lower end anticorrosion anchor rod with the enlarged head as claimed in claim 5, wherein the annular protrusion is formed by rolling and forming the sleeve wall of the bearing sleeve and then protruding outwards.

7. The bag type lower end anticorrosion anchor rod with the expansion head as claimed in claim 1 or 2, wherein the bag type lower end anticorrosion anchor rod with the expansion head comprises a fixed pipe, the anchor rod body penetrates through the fixed pipe, the lower end of the fixed pipe is fixed with the bearing seat, a bag seat is fixedly connected to the fixed pipe, and two ends of the bag are respectively fixed on the bearing seat and the bag seat.

8. The bag type lower end anticorrosion anchor rod with the enlarged head as claimed in claim 7, wherein a sealing nut is arranged on the anchor rod body, the sealing nut is arranged on the upper side of the bag seat and is in sealing fit with the bag seat, and the sealing nut and the bearing end connecting piece tension the part of the anchor rod body in the fixed pipe.

9. The sac type lower end corrosion-resistant anchor rod with the enlarged head according to claim 1 or 2, wherein the bearing end connecting piece is an anchor nut in threaded connection with the bearing end.