CN2756707Y - Post expending and expending cracking quick efficiency rpestress filling anchor rod - Google Patents
Post expending and expending cracking quick efficiency rpestress filling anchor rod Download PDFInfo
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- CN2756707Y CN2756707Y CN 200320109776 CN200320109776U CN2756707Y CN 2756707 Y CN2756707 Y CN 2756707Y CN 200320109776 CN200320109776 CN 200320109776 CN 200320109776 U CN200320109776 U CN 200320109776U CN 2756707 Y CN2756707 Y CN 2756707Y
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- anchor head
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Abstract
The utility model relates to an expanding cracking quick efficiency prestress slurry filling anchor rod which is composed of a rod body (1), nuts (3), an inverse wedge (4), an expanding casing (5), a shim (5), a shim plate (10), an exhaust pipe (11), a burning explosion expanding implement (12), flat nuts (13), a triangular shim pile (7), a slurry stopping valve (8), a rubber sleeve (9), a slurry filling hole (18) and an exhaust pipe hole (19). The utility model is characterized in that an inner anchor head is integration, and the inner anchor head has enough self protective capability. After the utility model is installed in position, the utility model is opened by the burning explosion expanding implement to lock the hole wall, so the installation is easy and reliable. Compared with the existing secondary pre-stress slurry filling anchor rod, the utility model has the advantages that propelling movement is convenient, the utility model can be locked in any position in a hole, more than two anchor heads can be connected in series according to the condition of rock formation, the utility model can be agilely and conveniently stretched after the utility model is installed, and the action can be quickly exerted. Compared with a mechanical inner anchor head recommended by the design specification of a hydraulic pre-stress anchor, the requirement for drill holes and clean holes is reduced, and hollow space cracks can appear in the drill holes. The utility model has the advantage of the labor of propelling movement saving, the installation efficiency and installing reliability are greatly enhanced, and the utility model is suitable for expansion in rock formation range.
Description
Affiliated technical field
The utility model belongs to ground supporting or field of reinforcement, can be used for the supporting or the reinforcing of tunnel, side slope, foundation ditch.
Background technology
The ordinary mortar anchor pole that extensively adopts belongs to passive carrying now, control rock deformation poor ability; And secondary grouting prestress anchorage cable complex structure, the construction period is long, the price height, and the propelling movement difficulty is big.
The mechanical type anchor head of recommending in " the water conservancy project prestress anchoraging design specifications SL212-98 " of Ministry of Water Resources's issue is a kind of interior anchor head of first distending, and it can not have cavity, step or big crackle to the quality requirement height in the clear hole of holing in the boring.Be a slip-knot Lin Te with rope and tie when pushing, unclamp slip-knot after putting in place, it is very unreliable to install.If slip-knot unclamps midway, anchor head is stuck, and it is all very difficult to advance and retreat.
Summary of the invention
The purpose of this utility model: the quick-acting prestressing force grouted anchor bars of back distending expanded that be to be that construction of tunnel, particularly water conservancy tunnel and slope project provide a kind of and push conveniently, price is lower, can carry in early days.
For achieving the above object, way of the present utility model is: interior anchor head is as a whole, and it has enough self-protection power, thereby pushes conveniently, after being in place, just can open by big external force, locks in the hole; Outer anchor head makes full use of the bearing capacity of hole wall, or the comprehensive supporting effect of hole wall bearing capacity and fast hard cast-in-situ concrete pier reaches outside the hole and lock, to realize early stage carrying fast.
The quick-acting prestressing force grouted anchor bars of back distending expanded also claim TZL series prestressed anchor, and wherein to represent inventor's surname, ZL be the spalling two word Chinese phonetic alphabet first letters to T, expressed essential characteristic of the present utility model.It is made up of the prestressing force body of rod, interior anchor head, outer anchor head, stack, injecting cement paste etc.
The prestressing force body of rod is main force transfer element.Available fining twisted steel, cold roll-in screw-thread steel, hollow tubular product and low loose steel hinge line.They combine with inside and outside anchor head, except that steel strand connect with intermediate plate, and other the technology that are threaded by force such as all employings.Rod body material can also adopt the high strength nonmetals except that adopting alloy steel.
Its feature is: interior anchor head by bloated shell (5), fall wedge (4), distending device and form.
Wherein expand shell by two above arcs column structure that sheet (20) constitutes that expands, is connected with node (21) between sheet and the sheet, the node outside is that vertical slot (22) supplies stack to pass through.The shell external surface that expands is circular protrusion (23), and is provided with cannelure (24), establishes O shape ring (25) in the groove.The shell inner surface that expands is taper, except that being provided with gathering sill (26), can also lay toughness reinforcing ditch (27).
The front end of falling the wedge is provided with and is no less than two projections (30), and this projection cooperates with bloated shell gathering sill.To adopting the interior anchor head of the posture that expands, the front end of falling the wedge can also be offered vertical slot (31), and the tail end of falling the wedge can be established internal thread (32), this screw thread and body of rod threaded engagement.
The distending device adopts the frame that expands, and the frame that expands is formed column structure by pad (40) and camber thin plate (41), requires to have at least between the thin plate interspace can make the nut turnover smoothly, and the frame that expands is wanted and can vertically be free to slide at lever front end.
The distending device adopts combustion-explosion type distending device, and combustion-explosion type distending device is made up of annular piston cylinder (50), annular piston (51), protecting cap (52), burning medicine cake (53), ignition pill (54), lead (55).After requiring the medicine cake to light, can make annular piston in design runlength, produce required thrust vertically.Above-mentioned bloated shell, fall wedge, the frame that expands, fire distending device available metal and make, also can make for the prestressed anchor of little tonnage of high-strength engineering plastic.
Outer anchor head by triangle pad pier (7), backing plate (10), only starch valve (8) and form, triangle pad pier is adopted in the prestressed anchor aperture, can simplify outer anchor head structural shape, and easy for installation.The epimere of triangle pad pier is a berrette file shape cone, and hypomere is a cone, by rubber sleeve and boring driving fit.Have body of rod hole, injected hole (18) and exhaust duct aperture (19) on the backing plate (10).With the rubber tile sealing, be provided with check valve (8) at the injected hole place between backing plate and the pad pier.
The utility model is compared with present secondary grouting prestressed anchor has following remarkable advantage:
(1) simple in structure, cheap;
(2) push conveniently, can be locked in arbitrary position in the hole;
(3) look the rock stratum situation and can be connected in series interior anchor head more than two, flexible;
(4) be lockable, stretch-draw after the installation, play a role rapidly.
The utility model is still to an improvement of anchor head in the mechanical type of recommending in the water conservancy project prestress anchoraging design specifications, the mechanical type anchor head is reduced the requirement of boring, and it is convenient to push, and can pass through by force by external force even block also, installation effectiveness and reliability significantly improve, and the scope of application enlarges.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described in further detail
Fig. 1 is the structural representation of the utility model embodiment one;
Fig. 2 is the structural representation of the utility model embodiment two;
Fig. 3 is the structural representation of the bloated shell of the utility model;
Fig. 4 is that the utility model falls the structural representation of wedge;
Fig. 5 is the structural representation of the bloated frame of the utility model;
Fig. 6 is the structural representation that the utility model fires the distending device.
The specific embodiment
Embodiment one: the quick-acting prestressing force grouted anchor bars of distending expanded behind the little tonnage
Fig. 1 is its structural representation, by a cold roll-in screw-thread steel body of rod (1), the frame (2) that expands, nut (3), fall wedge (4), the shell (5) that expands, pad (6), triangle pad pier (7), check valve (8), rubber sleeve (9), backing plate (10), stack (11) and form.Its installation, stretch-draw, grouting process are: boring, clear hole, order with pad, the shell that expands, fall wedge, expand frame, nut combinations to the body of rod, stack is sent into boring together after body of rod fixed interval, from firmly at the bottom of the hole, impacting about 20 centimetres the time at the bottom of the hole, the frame that expands slides along the body of rod, and the frame that expands pushes wedge, opens the shell node that expands, the shell that expands is adherent, interior anchor head locking.Put on triangle pad pier in the aperture order, stack is passed from the backing plate exhaust duct aperture, put on backing plate, locking nut.With spanner or the extremely predetermined tonnage of jack tension.Connect Grouting Pipe slip casting, Grouting Pipe is unloaded in the full back termination of pumping of slurry, and check valve check slurries leak.
Embodiment two: the quick-acting prestressing force grouted anchor bars of distending expanded behind the large-tonnage
Fig. 2 is its structural representation, by a fining twisted steel body of rod (1), fall wedge (4), the shell (5) that expands, pad (6), combustion-explosion type distending device (12), jam nut (13), stack (11), delta-ring pier (7), backing plate (10), only starch valve (8), rubber sleeve (9), injected hole (18), exhaust duct aperture (19) and form.Its installation, stretch-draw, grouting process are: boring, clear hole, order is attached to the body of rod with jam nut, combustion-explosion type distending device, pad, the shell that expands, the wedge that falls.Before dispatching from the factory, O shape ring has been inserted in bloated shell, three projections of wedge should enter three gathering sills of the shell that expands, stack is fixed on lever front end, and the suitable shell outside vertical slot that expands is drawn, be fixed on the body of rod together with the cable space that fires the distending device, will send into boring to the body of rod of anchor head in getting togather and reach the precalculated position.With the lead conducting, after the energising, fire the distending device starting shell node that will expand and open interior anchor head locking hole wall.The installation of outer anchor head, stretch-draw, slip casting are with embodiment one.
Claims (7)
1. quick-acting prestressing force grouted anchor bars of distending expanded after a kind, it is made up of the body of rod, interior anchor head, outer anchor head, stack, injecting cement paste; The body of rod can use fining twisted steel, cold roll-in screw-thread steel to make; They combine with inside and outside anchor head, the technology that are threaded by force such as employing; It is characterized in that: interior anchor head by bloated shell (5), fall wedge (4), distending device and form; Outer anchor head by triangle pad pier (7), backing plate (10), only starch valve (8) and form.
2. according to the quick-acting prestressing force grouted anchor bars of claim 1 described back distending expanded, it is characterized in that: the column structure that the shell that expands is made of the bloated sheet (20) of two above arcs, be connected with node (21) between sheet and the sheet, node one side is vertical slot (22), and the shell external surface that expands is circular protrusion (23), and is provided with cannelure (24), establish O shape ring (25) in the groove, the shell inner surface that expands is taper, except that being provided with gathering sill (26), also is provided with toughness reinforcing ditch (27).
3. according to the quick-acting prestressing force grouted anchor bars of claim 1 described back distending expanded, it is characterized in that: the external surface of falling the wedge is for conical, and tapering cooperates with bloated shell inner surface, and the front end of falling the wedge is provided with and is no less than two projections (30), and this projection cooperates with bloated shell gathering sill; To adopting the interior anchor head of the posture that expands, the front end of falling the wedge can also be offered vertical slot (31), and the tail end of falling the wedge can be established internal thread (32), this screw thread and body of rod threaded engagement.
4. according to the quick-acting prestressing force grouted anchor bars of claim 1 described back distending expanded, it is characterized in that: the bloated frame of distending device employing, the frame that expands is formed column structure by pad (40) and curved thin plate (41), has at least an interspace can make the nut turnover smoothly between the thin plate.
5. according to the quick-acting prestressing force grouted anchor bars of claim 1 described back distending expanded, it is characterized in that: distending device employing combustion-explosion type distending device, combustion-explosion type distending device is made up of annular piston cylinder (50), annular piston (51), protecting cap (52), burning medicine cake (53), ignition pill (54), lead (55).
6. according to the quick-acting prestressing force grouted anchor bars of claim 1 described back distending expanded, it is characterized in that: by triangle pad pier, backing plate, only starch the outer anchor head that valve is formed, the epimere of triangle pad pier (7) is a berrette file shape cone, and hypomere is a cone, by rubber sleeve and drill hole wall driving fit; Have body of rod hole, injected hole (18), exhaust duct aperture (19) on the backing plate (10), seal with rubber tile between backing plate and the pad pier, be provided with at the injected hole place and only starch valve (8).
7. according to the quick-acting prestressing force grouted anchor bars of the described back of claim 1 distending expanded, it is characterized in that: its bloated shell, fall wedge, the frame that expands, fire the distending device, triangle pad pier available metal is made, also can make of high-strength engineering plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109776 CN2756707Y (en) | 2003-11-17 | 2003-11-17 | Post expending and expending cracking quick efficiency rpestress filling anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200320109776 CN2756707Y (en) | 2003-11-17 | 2003-11-17 | Post expending and expending cracking quick efficiency rpestress filling anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2756707Y true CN2756707Y (en) | 2006-02-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200320109776 Expired - Fee Related CN2756707Y (en) | 2003-11-17 | 2003-11-17 | Post expending and expending cracking quick efficiency rpestress filling anchor rod |
Country Status (1)
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|---|---|
| CN (1) | CN2756707Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235646A (en) * | 2007-02-01 | 2008-08-06 | 张忠志 | Building slope ecological supporting technique |
| CN102239310A (en) * | 2008-11-18 | 2011-11-09 | 桑德威克采矿和建筑Rsa股份有限公司 | Rock bolt component |
| CN102748047A (en) * | 2012-07-17 | 2012-10-24 | 安徽省煤炭科学研究院 | Expansion-shell anchor rope |
| CN102753281A (en) * | 2010-02-12 | 2012-10-24 | 喜利得股份公司 | Method of forming anchor bolts |
| CN104863150A (en) * | 2015-06-11 | 2015-08-26 | 湖南大学 | Anchor end device of tension-compression pre-stressed anchor cable |
| CN105904363A (en) * | 2016-05-30 | 2016-08-31 | 安瑞装甲材料（芜湖）科技有限公司 | Bulletproof helmet clamping device |
| CN106121695A (en) * | 2016-07-29 | 2016-11-16 | 安徽理工大学 | A kind of self-drilling type swollen shell automatic clamping hollow grouting anchor |
| CN108951619A (en) * | 2018-09-19 | 2018-12-07 | 武大巨成结构股份有限公司 | A kind of self-locking anchor head of easy expanding and expanding method |
-
2003
- 2003-11-17 CN CN 200320109776 patent/CN2756707Y/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101235646A (en) * | 2007-02-01 | 2008-08-06 | 张忠志 | Building slope ecological supporting technique |
| CN101235646B (en) * | 2007-02-01 | 2013-11-06 | 张忠志 | Building slope ecological supporting member |
| CN102239310A (en) * | 2008-11-18 | 2011-11-09 | 桑德威克采矿和建筑Rsa股份有限公司 | Rock bolt component |
| CN102753281A (en) * | 2010-02-12 | 2012-10-24 | 喜利得股份公司 | Method of forming anchor bolts |
| CN102748047A (en) * | 2012-07-17 | 2012-10-24 | 安徽省煤炭科学研究院 | Expansion-shell anchor rope |
| CN104863150A (en) * | 2015-06-11 | 2015-08-26 | 湖南大学 | Anchor end device of tension-compression pre-stressed anchor cable |
| CN105904363A (en) * | 2016-05-30 | 2016-08-31 | 安瑞装甲材料（芜湖）科技有限公司 | Bulletproof helmet clamping device |
| CN106121695A (en) * | 2016-07-29 | 2016-11-16 | 安徽理工大学 | A kind of self-drilling type swollen shell automatic clamping hollow grouting anchor |
| CN108951619A (en) * | 2018-09-19 | 2018-12-07 | 武大巨成结构股份有限公司 | A kind of self-locking anchor head of easy expanding and expanding method |
| CN108951619B (en) * | 2018-09-19 | 2022-09-02 | 武大巨成结构股份有限公司 | Easy-to-expand self-locking anchor head and hole expanding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |