CN210263647U

CN210263647U - A grout sleeve for steel bar connection

Info

Publication number: CN210263647U
Application number: CN201921033163.4U
Authority: CN
Inventors: 谢友灼; 陈东; 许大荣
Original assignee: Jussen Construction Engineering Co ltd
Current assignee: Jussen Construction Engineering Co ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-04-07
Anticipated expiration: 2029-07-04

Abstract

The utility model discloses a grout sleeve for steel bar connection, including sleeve, negative pressure device, the both ends mouth of pipe is equipped with sealing rubber about the sleeve, and grout mouthful has been seted up to sleeve circumference wall lower part, and grout outlet has been seted up on circumference wall upper portion, is connected with the connecting pipe on grout outlet and the grout outlet respectively, and the sleeve is connected with negative pressure device through another end of the connecting pipe that links to each other with grout outlet, negative pressure device includes shell, pan feeding mouth, discharge gate, negative pressure board, and negative pressure board sliding connection is between pan feeding mouth and discharge gate, and negative pressure board keeps away from under connecting pipe side end face fixedly connected with natural state and orders about the elastic component that negative pressure board closed the pan feeding mouth, the utility model aims at providing a grout sleeve of steel bar connection cover can increase sleeve grout outlet's resistance, makes the cement mortar packing in clearance between sleeve and the reinforcing bar more.

Description

A grout sleeve for steel bar connection

Technical Field

The utility model relates to a steel bar connection spare especially relates to a grout sleeve for steel bar connection.

Background

The reinforcing bar is the indispensable apparatus in the construction is built in the room, all need use the reinforcing bar earlier to build when wall body, wall post and wall roof beam are built and carry out the intensity reinforcement, but meets the concatenation problem when the reinforcing bar is built, and the reinforcing bar needs to carry out the articulate, and the connection back reinforcing bar connects department intensity can be more weak.

At present, in the construction of the modern fabricated concrete structure, the stressed steel bars of the prefabricated parts are mainly connected by adopting a cement grouting connection method. The cement grouting steel bar joint is composed of a connecting sleeve, high-strength cement mortar and ribbed steel bars connected with two ends of the sleeve, and the principle is as follows: go into connecting sleeve with high strength cement mortar through the grout mouth, cement mortar fills the clearance between sleeve and the reinforcing bar, and the back cement mortar of packing flows from the grout outlet, and shutoff grout outlet this moment waits the cement mortar sclerosis back, with two reinforcing bars and the sleeve inner wall zonulae occludens that have the horizontal rib to accomplish steel bar joint connection's effect.

The above prior art solutions have the following drawbacks: the compactness of cement mortar injection in the clearance between sleeve and reinforcing bar can not be guaranteed to cement mortar after the cement mortar flows out from the grout outlet, makes the internal clearance not enough full after the cement mortar hardens, reduces the intensity of steel bar connection.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a grout sleeve for steel bar connection can increase the resistance of grout sleeve grout outlet, makes the cement mortar in the clearance between grout sleeve and reinforcing bar fill more closely knit.

The above object of the present invention can be achieved by the following technical solutions:

the utility model provides a grout sleeve for steel bar connection, includes sleeve, negative pressure device, and the both ends mouth of pipe is equipped with sealing rubber about the sleeve, and the grout mouth has been seted up to sleeve circumference wall lower part, and the grout outlet has been seted up on circumference wall upper portion, is connected with the connecting pipe on grout outlet and the grout outlet respectively, and the sleeve is connected with negative pressure device through another end of the connecting pipe that links to each other with the grout outlet, negative pressure device includes shell, pan feeding mouth, discharge gate, negative pressure plate, and negative pressure plate sliding connection is between pan feeding mouth and discharge gate, and negative pressure plate keeps away from under connecting pipe side end face fixedly connected with natural state and orders about the elastic component that negative.

Through adopting above-mentioned technical scheme, cement mortar pours into from the grout mouth until filling up the clearance between reinforcing bar and the sleeve after, and the negative pressure board just can be promoted because of the continuation of cement mortar pours into, and later cement mortar just flows from the discharge gate, can guarantee like this that the joint strength of two reinforcing bars after cement mortar solidifies is higher, prevents that the clearance between reinforcing bar and the sleeve from not pouring up and just flowing from the grout outlet, avoids making the staff think by mistake and fill up cement mortar and accomplish and pours. Can make the cement mortar filling in the clearance between grout sleeve and reinforcing bar more closely knit through using above-mentioned scheme.

The utility model discloses further set up to: the elastic assembly comprises a bottom opening plate, a top opening plate and a central rod, wherein the central rod is fixed on the end surface of one side of the negative pressure plate far away from the connecting pipe, the central rod is far away from one side of the negative pressure plate and is sequentially connected with the bottom opening plate and the top opening plate in a sliding manner, the top opening plate is fixed on the shell, a spring is arranged between the bottom opening plate and the top opening plate, and the spring is sleeved on the central rod.

Through adopting above-mentioned technical scheme, when the clearance between reinforcing bar and the sleeve is not annotated full, can't make the spring compression and make the negative pressure plate slide, prevent that cement mortar from just flowing out from the discharge gate when the clearance is not annotated full.

The utility model discloses further set up to: one side of the bottom opening plate is far away from the central rod and extends to the outer side of the shell, the partial threads of the central rod on the outer side of the shell are connected with nuts, the outer wall of the shell is far away from the one end of the sleeve fixedly connected with limiting sleeve, the limiting sleeve comprises a transverse plate and a vertical plate, the transverse plate is fixed on the shell, and the vertical plate is far away from one side of the shell at the nuts.

Through adopting above-mentioned technical scheme, behind cement mortar outflow discharge gate, under the effect of stop collar, thereby make well core rod remove to promote the negative pressure plate and remove and plug up the pan feeding mouth through swivel nut, prevent that cement mortar from continuing to flow out.

The utility model discloses further set up to: the central rod comprises a cuboid and a cylinder, the cuboid is in sliding connection with the top opening plate, threads are arranged on the cylinder, and the cylinder is connected with a nut.

Through adopting above-mentioned technical scheme, when swivel nut, because cuboid and roof oral area sliding connection do not take place to rotate, thereby it can't promote well core rod also to take place to rotate to prevent swivel nut time well core rod.

The utility model discloses further set up to: be equipped with the internal thread on the grout outlet inner wall, the outer wall that the connecting pipe cooperation grout outlet was located is equipped with the external screw thread, connecting pipe and pan feeding mouth threaded connection.

Through adopting above-mentioned technical scheme, negative pressure device can be fine through connecting pipe and muffjoint, also can dismantle when needs.

The utility model discloses further set up to: and a plurality of convex spheres are arranged on the circumferential inner wall of the sleeve.

Through adopting above-mentioned technical scheme, cement mortar between reinforcing bar and sleeve solidifies the back, protruding spheroid can make cement mortar and telescopic area of contact increase and fasten more, increase the wholeness.

The utility model discloses further set up to: a plurality of spherical grooves are formed in the circumferential outer wall of the sleeve.

Through adopting above-mentioned technical scheme, after grout connecting sleeve is buried the wall body by muddy earth, make the area of contact between muddy earth and the sleeve increase and more difficult take place the mutual displacement, increase fastening nature.

To sum up, the utility model discloses following technological effect has: the resistance of the grout outlet of the grouting sleeve can be increased, so that the gap between the grouting sleeve and the reinforcing steel bar is filled with more compact cement mortar.

Drawings

FIG. 1 is a schematic sectional view of the whole of the present embodiment;

FIG. 2 is a schematic cross-sectional view of the negative pressure device for plugging in the embodiment;

FIG. 3 is a schematic sectional view of the negative pressure device of the present embodiment when it is opened;

FIG. 4 is a schematic cross-sectional view of the sleeve of the present embodiment;

fig. 5 is a schematic structural view of the center rod of the present embodiment.

Description of reference numerals: 1. a sleeve; 2. a negative pressure device; 3. a feeding port; 4. a discharge port; 5. sealing rubber; 6. grouting ports; 7. a pulp outlet; 8. reinforcing steel bars; 9. a cavity; 10. a housing; 11. a negative pressure plate; 12. a bottom port plate; 13. a top plate; 14. a center pole; 141. a cuboid; 142. a cylinder; 15. a spring; 16. a limiting sleeve; 161. a transverse plate; 162. a vertical plate; 17. a convex sphere; 18. a spherical recess; 19. a nut; 20. and (4) connecting the pipes.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, but rather should be construed as broadly as the present invention is capable of modification in various respects, all without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Example (b):

a grouting sleeve for connecting reinforcing steel bars is shown in figure 1 and comprises a sleeve 1, a negative pressure device 2 and a connecting pipe 20, wherein a feeding port 3 connected with the sleeve 1 and a discharging port 4 for cement mortar to flow out are formed in the negative pressure device 2. Sleeve 1 is cylindrical hollow tube shape, and the upper and lower both ends mouth of pipe is equipped with sealing rubber 5, and sealing rubber 5 is equipped with and supplies reinforcing bar male hole, and the reinforcing bar inserts the back, the space between 5 shutoff sleeves 1 of sealing rubber and the reinforcing bar. Be equipped with grout outlet 6 and grout outlet 7 on the circumference wall, negative pressure device 2 passes through connecting pipe 20 with grout outlet 7 and is connected, connecting pipe 20 both ends are connecting sleeve 1 and negative pressure device 2 respectively, be equipped with the external screw thread on the one side end outer wall that grout outlet 7 was connected to connecting pipe 20, also be equipped with the internal thread on sleeve 1's grout outlet inner wall, connecting pipe 20 and grout outlet 7 threaded connection play zonulae occludens and also can dismantle when needing when the effect of zonulae occludens. After the two reinforcing steel bars 8 are respectively inserted from the sealing rubber 5 at the pipe orifices at the two ends of the sleeve 1, cement mortar is injected from the grouting port 6 to flow out from the mud outlet 4 of the negative pressure device 2, so that the cement mortar fills the gap between the reinforcing steel bars 8 and the sleeve 1, and the butt joint and fixation of the two reinforcing steel bars 8 are completed.

As shown in fig. 1 and 2, the negative pressure device 2 includes a cavity 9, a housing 10, a negative pressure plate 11, a bottom opening plate 12 and a top opening plate 13 parallel to the negative pressure plate 11, the negative pressure plate 11 is slidably fitted to one end of the housing 10 close to the feeding opening 3, and is used for preventing cement mortar from flowing out to the discharge opening 4 without filling up a gap between the reinforcing steel bar 8 and the sleeve 1. The end face of one side, away from the connecting pipe 20, of the negative pressure plate 11 is fixedly connected with a center rod 14, the center rod 14 is vertically fixed with the negative pressure plate 11, and the end of one side, away from the connecting pipe 20, of the center rod 14 penetrates out of the shell 10. Be equipped with spring 15 between end oral plate 12 and the top oral plate 13, end oral plate 12 and well core rod 14 fixed connection, spring 15 both ends are fixed respectively on end oral plate 12 and top oral plate 13 and are overlapped on well core rod 14, spring 15 separates end oral plate 12 and top oral plate 13, and keeps having tension between end oral plate 12 and top oral plate 13, makes end oral plate 12 laminate and is close to 3 one sides of pan feeding mouth in die cavity 9, and top oral plate 13 laminates and keeps away from 3 sides of pan feeding mouth in die cavity 9. By the tension of the spring 15, the cement mortar cannot push the negative pressure plate 11 when not filling the gap between the reinforcing steel bar 8 and the sleeve 1, and cannot flow out from the discharge port 4.

As shown in fig. 3, a nut 19 is screwed on a part of the central rod 14 extending out of the casing 10, a stop collar 16 is fixedly connected to an end of the casing 10 on a side away from the material inlet 3, the stop collar 16 includes a horizontal plate 161 and a vertical plate 162, the horizontal plate 161 is fixed on the casing 10, and the vertical plate 162 is parallel to the nut 19 and is located on a side of the nut 19 away from the casing 10, so as to limit a distance that the nut 19 is away from the casing 10. The top port plate 13 is connected with the central rod 14 in a sliding mode, after the cement mortar is filled in the gap between the sleeve 1 and the steel bar 8, the cement mortar is continuously injected to increase the pressure in the sleeve 1, so that the cement mortar pushes the negative pressure plate 11, the negative pressure plate 11 pushes the central rod 14, so that the bottom port plate 12 fixedly connected to the central rod 14 moves towards the direction far away from the feeding port 3 and extrudes the spring 15 until the nut 19 in threaded connection with the central rod 14 contacts the limiting sleeve 16, at the moment, the cement mortar flows out from the mud outlet 4, and the gap between the steel bar 8 and the sleeve 1 is filled with the cement mortar more densely. After stopping the cement mortar injection, this moment can be swivel nut 19, under the restriction that receives stop collar 16, well core rod 14 will move towards mud outlet 7, and well core rod 14's removal makes negative pressure plate 11 go towards mud outlet 7 direction slip on pan feeding mouth 3, until cement mortar can't follow mud outlet 4 and flow out.

As shown in fig. 5, the central rod 14 includes a rectangular parallelepiped 141 and a cylindrical body 142, the cylindrical body 142 is threaded for connection with the nut 19, the rectangular parallelepiped 141 is slidably connected with the housing 10 and the top opening plate 13, and when the nut 19 rotates, the rectangular parallelepiped 141 can slide with the housing 10 without rotation. As shown in fig. 4, a plurality of convex spheres 17 are arranged on the inner wall of the circumference of the sleeve 1, so that the contact area between the solidified cement mortar and the inner pipe is larger, and the effects of fastening and increasing the contact strength are achieved. The circumference wall in the outside of sleeve 1 is equipped with a plurality of circular recesses, and multiplicable area of contact and fitting surface after concrete buries sleeve 1 can increase the fastening force between sleeve 1 and the concrete.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a grout sleeve for steel bar connection which characterized in that: including sleeve (1), negative pressure device (2), the both ends mouth of pipe is equipped with sealing rubber (5) about sleeve (1), and grout mouth (6) have been seted up to sleeve (1) circumference wall lower part, and grout outlet (7) have been seted up on circumference wall upper portion, is connected with connecting pipe (20) on grout outlet (6) and grout outlet (7) respectively, and sleeve (1) is connected with negative pressure device (2) through another end of connecting pipe (20) that links to each other with grout outlet (7), negative pressure device (2) are including shell (10), pan feeding mouth (3), discharge gate (4), negative pressure plate (11), and negative pressure plate (11) sliding connection is between pan feeding mouth (3) and discharge gate (4), and negative pressure plate (11) keep away from the elastic component that order about negative pressure plate (11) to seal pan feeding mouth (3) under connecting pipe (20) a side end face fixedly connected with natural state.

2. A grout sleeve for rebar junction according to claim 1, wherein: elastic component includes end mouth board (12), top mouth board (13), well core rod (14) are fixed and are kept away from the terminal surface of connecting pipe (20) one side in negative pressure board (11), well core rod (14) are kept away from negative pressure board (11) one side in proper order with end mouth board (12) fixed connection, with top mouth board (13) sliding connection, top mouth board (13) are fixed on shell (10), be equipped with spring (15) between end mouth board (12) and top mouth board (13), spring (15) cover is established on well core rod (14).

3. A grout sleeve for rebar junction according to claim 2, wherein: well core rod (14) keep away from end opening board (12) one side and extend to shell (10) outside, well core rod (14) have nut (19) in the partial threaded connection in shell (10) outside, and the one end fixedly connected with stop collar (16) of sleeve (1) are kept away from to shell (10) outer wall, stop collar (16) include diaphragm (161) and riser (162), and diaphragm (161) are fixed on shell (10), and one side of shell (10) is kept away from in nut (19) to riser (162).

4. A grout sleeve for rebar junction according to claim 3, wherein: the central rod (14) comprises a cuboid (141) and a cylinder (142), the cuboid (141) is in sliding connection with the top opening plate (13), threads are arranged on the cylinder (142), and the cylinder (142) is connected with the nut (19).

5. A grout sleeve for rebar junction according to claim 1, wherein: be equipped with the internal thread on grout outlet (7) inner wall, the outer wall that connecting pipe (20) cooperation grout outlet (7) department is equipped with the external screw thread, connecting pipe (20) and pan feeding mouth (3) threaded connection.

6. A grout sleeve for rebar junction according to claim 1, wherein: the inner wall of the circumference of the sleeve (1) is provided with a plurality of convex spheres (17).

7. A grout sleeve for rebar junction according to claim 1, wherein: the sleeve (1) is provided with a plurality of spherical grooves (18) on the circumferential outer wall.