CN203879524U - Expansion shell type hollow anchor rod - Google Patents
Expansion shell type hollow anchor rod Download PDFInfo
- Publication number
- CN203879524U CN203879524U CN201420126168.2U CN201420126168U CN203879524U CN 203879524 U CN203879524 U CN 203879524U CN 201420126168 U CN201420126168 U CN 201420126168U CN 203879524 U CN203879524 U CN 203879524U
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- China
- Prior art keywords
- wedge
- shell
- gag lever
- lever post
- rises
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Abstract
The utility model relates to the technical field of anchoring support technology of geotechnical engineering. An expansion shell type hollow anchor rod comprises a hollow anchor rod body, a wedge body and an expansion shell piece, wherein the hollow anchor rod body is in threaded connection with the wedge body; the wedge body is provided with a wedge groove for mounting the expansion shell piece; the expansion shell piece is slidingly arranged in the wedge groove; a limiting rod is arranged in the hollow anchor rod body; the expansion shell piece is provided with a constraint device for limiting the sliding of the expansion shell piece; and the lower end of the limiting rod is connected with the constraint device. When the expansion shell type hollow anchor rod is downwards put into an anchor hole, the expansion shell piece is limited in the wedge groove through the limiting rod and the constraint device so as to prevent the engineering problem of the occlusion between the expansion shell piece and a surrounding rock halfway.
Description
Technical field
The utility model relates to geotechnical engineering anchoring support technical field, relates in particular to a kind of expansion shell type hollow bolt.
Background technology
In the digging process of underground construction, except country rock completely can be from steady and need not supporting, all must to its in addition certain supporting make it enter stable state, this measure is called as combined bolting and shotcrete.Combined bolting and shotcrete is by sprayed mortar, anchor pole, steelframe, steel mesh reinforcements etc. carry out appropriately combined support form, in the anchor pole adopting at combined bolting and shotcrete, there is a kind of expansion type rock bolt, the agent structure of its shell anchor head that rises is comprised of wedge and the shell sheet that rises, threaded anchor rod body is screwed into wedge, the shell anchor head that rises is sent to after assigned address, at the bottom of again wedge and the shell sheet that rises being propped up to anchor hole, to stop wedge rotation, twist again anchor rod body, under on anchor rod body top or anchor rod body, special boss promotes, the shell sheet spreading that rises in wedge groove, until play a role with country rock interlock.
By appeal step, can be found out, existing expansion type rock bolt is in the method all adopting when rising by shell sheet spreading at the bottom of wedge and the shell sheet that rises are propped up to anchor hole, but owing to rising by shell sheet except can the wedge surface on wedge sliding, may radially freely throw off in addition.At the shell anchor head that rises, send in anchor hole assigned address process, if there is no other restrictions, on wedge groove, the loose shell sheet that rises is pushed by residual rubble in irregular anchor hole or anchor hole, the shell sheet that rises is easy to halfway and country rock interlock, cause anchor bolt construction in a dilemma, even because of the shell sheet snap-in force that rises, cross the shell anchor head that rises sharply and cannot take out and cause useless hole.
Summary of the invention
In order to address the above problem, the purpose of this utility model is to provide a kind of expansion shell type hollow bolt, this expansion shell type hollow bolt is limited in wedge groove transferring in anchor hole time by gag lever post and the restraint device shell sheet that will rise, and the engineering problem of prevent from rising shell sheet halfway and country rock interlock occurs.
In order to realize above-mentioned object, the utility model has adopted following technical scheme:
An expansion shell type hollow bolt, comprises the hollow bolt body of rod, wedge and the shell sheet that rises, and the hollow bolt body of rod is threaded with wedge, and wedge is provided with for the wedge groove of the shell sheet that rises is installed, and the shell sheet that rises is slidably arranged in wedge groove; The inside of the hollow bolt body of rod is provided with gag lever post, the restraint device that on the shell sheet that rises, the restricted shell sheet that rises slides, and the bottom of gag lever post is connected with restraint device.
As preferably, described restraint device is crossbeam, and wedge middle part is provided with the central shaft hole that runs through the upper and lower both ends of the surface of wedge, and the upper end of gag lever post is fixed on hollow bolt body of rod upper end, and the bottom of gag lever post is connected through in the middle part of central shaft hole and crossbeam; The described shell sheet quantity that rises is two, and the bottom of two shell sheets that rise is equipped with bayonet socket, and the two ends of crossbeam snap in respectively in the bayonet socket of two shell sheets that rise.By the end of crossbeam, block the bottom of the shell sheet that rises, by gag lever post, crossbeam is being held, thereby limited the shell sheet that rises, open.At the shell hollow bolt that rises, send in anchor hole process, if the shell anchor head that rises is blocked phenomenon, because the shell sheet that rises is fixed, can naturally not open, while being necessary, the shell anchor head that rises can arbitrarily exit.Behind hole clearly, the shell anchor head that again will rise is sent into anchor hole, arrives behind precalculated position, unclamp gag lever post upper end, under exerting oneself, push away gag lever post, crossbeam drives the shell sheet that rises to open, until rise, shell sheet and country rock close contact, twist or pull anchor rod body, rise shell sheet just with country rock interlock.
As preferably, on two shell sheets that rise, be equipped with the bayonet socket passage communicating with bayonet socket, two bayonet socket passages that rise on shell sheet are all clockwise direction or counterclockwise arrange, and the end of crossbeam is inserted in the bayonet socket rising on shell sheet by the bayonet socket passage rotation of the side of the shell sheet that rises and the shell sheet that will rise blocks.Now, gag lever post is except controlling the axial location of crossbeam, at the shell anchor head that rises, arrives after assigned address, also can allow crossbeam-rotating, and the end of crossbeam is thrown off from the shell sheet that rises.
As preferably, the bottom of gag lever post is arranged with the first cross bar and the second cross bar in parallel, distance between the first cross bar and the second cross bar and the thickness of crossbeam match, crossbeam middle part be also provided with that the cross section of combining with gag lever post, the first cross bar matches crossbeam through hole, the first cross bar on gag lever post is by after crossbeam through hole, half-twist, the first cross bar and the second cross bar on gag lever post just can block crossbeam.
As preferably, the bottom of described gag lever post is threaded with the middle part of crossbeam.
As preferably, between crossbeam and wedge, be provided with Compress Spring, between wedge and crossbeam, Compress Spring is installed, unclamp after gag lever post, under the effect of spring, the crossbeam shell sheet that can automatically promote to rise opens, and does not need to promote gag lever post downwards.
As preferably, restraint device comprises constraint stage clip, wedge pin and spacer pin, on the shell sheet that rises, is provided with pressure spring slot, wedge be provided with the centre bore that matches with gag lever post bottom and with the limit pin hole communicating with centre bore; Constraint stage clip is arranged in pressure spring slot, and spacer pin is arranged in limit pin hole, and wedge pin is arranged between constraint stage clip and spacer pin, and the end of spacer pin is in centre bore, and the bottom of gag lever post is inserted centre bore and centre bore is extruded in the end of spacer pin.When centre bore is not inserted in gag lever post bottom, constraint stage clip promotes wedge pin, and wedge pin props up spacer pin, and the shell sheet that makes to rise cannot move with respect to wedge.The shell hollow bolt that rises is sent into anchor hole, and the shell anchor head that rises is easy to arrive precalculated position.As long as the central bore that gag lever post enters wedge, under gag lever post extruding, removable pin can eject centre bore just spacer pin, and wedge pin ejects wedge just, and the shell sheet that now rises is that expansible is movable.
The utility model adopts technique scheme, the movement that this expansion shell type hollow bolt rises between shell sheet and wedge by restraint device and gag lever post restriction, when the shell anchor head that rises arrives behind precalculated position, can be by the gag lever post constraint of device for the shell sheet that rises that unmuzzle, the shell sheet that rises opens after activity, rotation or pull anchor rod body, rising by shell sheet will be initiatively and the complete interlock of country rock, back out gag lever post, backing plate, nut the stretch-draw hollow bolt body of rod are installed, country rock is applied to prestressing force, last, to anchor hole, inject full mortar.Whole device is simple to operate, and the engineering problem of prevent from rising shell sheet halfway and country rock interlock occurs, and has guaranteed efficiency of construction.
Accompanying drawing explanation
Fig. 1 is a kind of expansion shell type hollow bolt structural representation in embodiment 1.
Fig. 2 is the anchor trend texture edge sectional view of Fig. 1.
Fig. 3 is another kind of expansion shell type hollow bolt structural representation in embodiment 1.
Fig. 4 is the structural representation of embodiment 2.
The specific embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present utility model is described in further detail.
Embodiment 1:
A kind of expansion shell type hollow bolt as shown in Fig. 1 ~ 3, comprise the hollow bolt body of rod 1, wedge 2 and two shell sheets 3 that rise, the hollow bolt body of rod 1 is threaded with wedge 2, wedge 2 is provided with for two wedge grooves of the shell sheet 3 that rises are installed, the shell sheet 3 that rises is all slidably arranged in wedge groove, the inside of the hollow bolt body of rod 1 is run through and is provided with gag lever post 4, rise on shell sheet 3 and be connected with crossbeam 5, the slip that crossbeam 5 restrictions are risen between shell sheet 3 and wedge 2, concrete method is the bayonet socket passage that the bottom of shell sheet 3 is provided with bayonet socket 31 and communicates with bayonet socket 31 that rises, two bayonet socket passages that rise on shell sheet 3 are all clockwise direction or counterclockwise arrange, the end of crossbeam 5 is inserted in the bayonet socket 31 rising on shell sheet 3 by the bayonet socket passage rotation of the side of the shell sheet 3 that rises and the shell sheet 3 that will rise blocks, putting into practice middle cross beam 5 and the upper end of the shell sheet 3 that rises carries out buckle and is connected also and is fine.
At wedge 2 middle parts, be provided with the central shaft hole 21 that runs through wedge both ends of the surface Shang Xia 2, the upper end of gag lever post 4 is fixed on the hollow bolt body of rod 1 upper end, and the bottom of gag lever post 4 is through central shaft hole 21.The bottom of gag lever post 4 is connected with the middle part of crossbeam 5, and concrete mode has a variety of, can be that the bottom of gag lever post 4 is directly threaded with the middle part of crossbeam 5, and it is all the simplest that the method operates with structure; The bottom that can be also gag lever post 4 is arranged with the first cross bar 41 and the second cross bar 42 in parallel, distance between the first cross bar 41 and the second cross bar 42 and the thickness of crossbeam 5 match, crossbeam 5 middle parts are also provided with the crossbeam through hole that the cross section of combining with gag lever post 4, the first cross bar 41 matches, the first cross bar 41 on gag lever post 4 is by after crossbeam through hole, half-twist, the first cross bar 41 and the second cross bar 42 on gag lever post 4 just can block crossbeam 5.No matter be that mode, gag lever post 4, except controlling the axial location of crossbeam 5, arrives after assigned address at the shell anchor head that rises, and also can allow crossbeam 5 rotate, and the end of crossbeam 5 is thrown off in the bayonet socket passage rising shell sheet 3.
According to above-mentioned technical scheme, at the shell hollow bolt that rises, send in anchor hole process, if the shell anchor head that rises is blocked phenomenon, because the shell sheet 3 that rises has been fixed, can naturally not open, while being necessary, the shell anchor head that rises can arbitrarily exit, and behind hole clearly, the shell anchor head that again will rise is sent into anchor hole.Arrive behind precalculated position, unclamp gag lever post 4 upper ends, under exerting oneself, push away gag lever post 4, crossbeam 5 drives the shell sheet 3 that rises to open, shell sheet 3 and country rock close contact until rise, twist or pull anchor rod body, rise shell sheet 3 just with country rock interlock, back out gag lever post 4, backing plate, nut the stretch-draw hollow bolt body of rod 1 are installed, country rock is applied to prestressing force, and the most backward anchor hole injects full mortar, and whole operation can complete.In addition as shown in Figure 3, between wedge 2 and crossbeam 5, Compress Spring 6 is installed, is unclamped after gag lever post 4, under the effect of spring, the crossbeam 5 shell sheet 3 that can automatically promote to rise opens, and does not need to promote gag lever post 4 downwards.
Embodiment 2:
A kind of expansion shell type hollow bolt as shown in Figure 4, comprises the hollow bolt body of rod 1, wedge 2 and the shell sheet 3 that rises, and the hollow bolt body of rod 1 is threaded with wedge 2, and wedge 2 is provided with for the wedge groove of the shell sheet 3 that rises is installed, and the shell sheet 3 that rises is slidably arranged in wedge groove.The inside of the hollow bolt body of rod 1 is run through and is provided with gag lever post 4, is connected with the restraint device sliding for limiting the shell sheet 3 that rises on the shell sheet 3 that rises, and the bottom of gag lever post 4 is connected with restraint device.Specifically restraint device comprises constraint stage clip 71, wedge pin 72 and spacer pin 73, on the shell sheet 3 that rises, is provided with pressure spring slot 32, wedge 2 be provided with the centre bore 22 that matches with gag lever post 4 bottoms and with the limit pin hole 23 communicating with centre bore 22.Constraint stage clip 71 is arranged in pressure spring slot 32, spacer pin 73 is arranged in limit pin hole 23, wedge pin 72 is arranged between constraint stage clip 71 and spacer pin 73, the end of spacer pin 73 is in centre bore 22, and the bottom of gag lever post 4 is inserted centre bore 22 and centre bore 22 is extruded in the end of spacer pin 73.When centre bore 22 is not inserted in gag lever post 4 bottoms, constraint stage clip 71 promotes wedge pin 72, and wedge pin 72 props up spacer pin 73, and the shell sheet 3 that makes to rise cannot move with respect to wedge 2.In addition, rise on the bottom of shell sheet 3 and be connected with crossbeam 5, concrete method is that the rise bottom of shell sheet 3 is provided with bayonet socket 31, the end of crossbeam 5 is inserted in the bayonet socket 31 rising on shell sheet 3 and the shell sheet 3 that will rise blocks, between crossbeam 5 and wedge 2, Compress Spring 6 is installed simultaneously, while unmuzzling, under the effect of spring, the crossbeam 5 shell sheet 3 that can automatically promote to rise opens.The shell hollow bolt that rises is being sent in the process of anchor hole, and the shell anchor head that rises is easy to arrive precalculated position.As long as the central bore that gag lever post 4 enters wedge 2, under gag lever post 4 extruding, removable pin can eject centre bore 22 just spacer pin 73, wedge pin 72 ejects wedge 2 just, the shell sheet 3 that now rises is that expansible is movable, until anchor rod body is twisted or pulled to rise shell sheet 3 and country rock close contact, rise shell sheet 3 just with country rock interlock, back out gag lever post 4, backing plate, nut the stretch-draw hollow bolt body of rod 1 are installed, country rock is applied to prestressing force, the most backward anchor hole injects full mortar, and whole operation can complete.
Comprehensive embodiment 1 and 2, the movement that this expansion shell type hollow bolt rises between shell sheet and wedge by the restriction of restraint device and gag lever post, when the shell anchor head that rises arrives behind precalculated position, can be by the gag lever post constraint of device for the shell sheet that rises that unmuzzle, the shell sheet that rises opens after activity, rotation or pull anchor rod body, the shell sheet that rises will be initiatively and the complete interlock of country rock, backs out gag lever post, backing plate, nut the stretch-draw hollow bolt body of rod are installed, country rock is applied to prestressing force, last, to anchor hole, inject full mortar.Whole device is simple to operate, and the engineering problem of prevent from rising shell sheet halfway and country rock interlock occurs, and has guaranteed efficiency of construction.
Claims (7)
1. an expansion shell type hollow bolt, comprises the hollow bolt body of rod, wedge and the shell sheet that rises, and the hollow bolt body of rod is threaded with wedge, and wedge is provided with for the wedge groove of the shell sheet that rises is installed, and the shell sheet that rises is slidably arranged in wedge groove; It is characterized in that: the inside of the hollow bolt body of rod is provided with gag lever post, the restraint device that on the shell sheet that rises, the restricted shell sheet that rises slides, the bottom of gag lever post is connected with restraint device.
2. a kind of expansion shell type hollow bolt according to claim 1, it is characterized in that: described restraint device is crossbeam, wedge middle part is provided with the central shaft hole that runs through the upper and lower both ends of the surface of wedge, the upper end of gag lever post is fixed on hollow bolt body of rod upper end, and the bottom of gag lever post is connected with crossbeam middle part through central shaft hole; The described shell sheet quantity that rises is two, and the bottom of two shell sheets that rise is equipped with bayonet socket, and the two ends of crossbeam snap in respectively in the bayonet socket of two shell sheets that rise.
3. a kind of expansion shell type hollow bolt according to claim 2, is characterized in that: on two described shell sheets that rise, be equipped with the bayonet socket passage communicating with bayonet socket, two bayonet socket passages that rise on shell sheet are all clockwise direction or counterclockwise arrange.
4. a kind of expansion shell type hollow bolt according to claim 3, it is characterized in that: the bottom of described gag lever post is arranged with the first cross bar and the second cross bar in parallel, distance between the first cross bar and the second cross bar and the thickness of crossbeam match, crossbeam middle part be also provided with that the cross section of combining with gag lever post, the first cross bar matches crossbeam through hole.
5. a kind of expansion shell type hollow bolt according to claim 3, is characterized in that: the bottom of described gag lever post is threaded with the middle part of crossbeam.
6. a kind of expansion shell type hollow bolt according to claim 5, is characterized in that: between crossbeam and wedge, be provided with Compress Spring.
7. a kind of expansion shell type hollow bolt according to claim 1, it is characterized in that: restraint device comprises constraint stage clip, wedge pin and spacer pin, rise on shell sheet and be provided with pressure spring slot, wedge be provided with the centre bore that matches with gag lever post bottom and with the limit pin hole communicating with centre bore; Described constraint stage clip is arranged in pressure spring slot, spacer pin is arranged in limit pin hole, wedge pin is arranged between constraint stage clip and spacer pin, and the end of spacer pin is in centre bore, and the bottom of gag lever post is inserted centre bore and centre bore is extruded in the end of spacer pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420126168.2U CN203879524U (en) | 2014-03-19 | 2014-03-19 | Expansion shell type hollow anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420126168.2U CN203879524U (en) | 2014-03-19 | 2014-03-19 | Expansion shell type hollow anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879524U true CN203879524U (en) | 2014-10-15 |
Family
ID=51680033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420126168.2U Expired - Fee Related CN203879524U (en) | 2014-03-19 | 2014-03-19 | Expansion shell type hollow anchor rod |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879524U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114110A (en) * | 2015-09-21 | 2015-12-02 | 洛阳中岩工程材料有限公司 | Novel slide way type expanding-shell anchor head |
| CN108547649A (en) * | 2018-04-02 | 2018-09-18 | 东北大学 | A kind of simplified large deformation energy-absorption anchor rod of structure |
| CN113756256A (en) * | 2021-09-28 | 2021-12-07 | 王伟龙 | Water conservancy dam earthquake-resistant structure |
-
2014
- 2014-03-19 CN CN201420126168.2U patent/CN203879524U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105114110A (en) * | 2015-09-21 | 2015-12-02 | 洛阳中岩工程材料有限公司 | Novel slide way type expanding-shell anchor head |
| CN108547649A (en) * | 2018-04-02 | 2018-09-18 | 东北大学 | A kind of simplified large deformation energy-absorption anchor rod of structure |
| CN113756256A (en) * | 2021-09-28 | 2021-12-07 | 王伟龙 | Water conservancy dam earthquake-resistant structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141015 Termination date: 20160319 |