CN204716269U - Anchor cable dismounting joint - Google Patents
Anchor cable dismounting joint Download PDFInfo
- Publication number
- CN204716269U CN204716269U CN201520445309.1U CN201520445309U CN204716269U CN 204716269 U CN204716269 U CN 204716269U CN 201520445309 U CN201520445309 U CN 201520445309U CN 204716269 U CN204716269 U CN 204716269U
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- CN
- China
- Prior art keywords
- anchor cable
- dismounting joint
- jack
- steel strand
- clamping device
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 52
- 239000010959 steel Substances 0.000 claims abstract description 52
- 238000000034 method Methods 0.000 description 22
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004873 anchoring Methods 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
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Abstract
The utility model provides a kind of anchor cable dismounting joint, is applied to anchor cable, and described anchor cable comprises steel strand, clamping device and intermediate plate, it is characterized in that, described anchor cable dismounting joint has centre bore, and described steel strand are arranged in described centre bore; Described anchor cable dismounting joint is connected along one end of described centre bore axis direction with described clamping device, the other end of described anchor cable dismounting joint is arranged on jack, during to make that described in described jack pair, steel strand carry out stretch-draw, described intermediate plate is displaced downwardly in described centre bore, easy to operate, with low cost, effectively save support cost.
Description
Technical field
The utility model embodiment relates to anchor cable dismantling technology, particularly relates to a kind of anchor cable dismounting joint.
Background technology
Cable bolting, as a kind of active support means, has the features such as supporting capacity is large, safe and reliable, is at home and abroad developed rapidly in recent years, at present, the engineerings such as mine timbering, slope treatment, building foundation pit retaining wall is used widely.
Because underground coal mine exists some particular locations or some special circumstances, such as, eye is cut for cable bolting, due to the existence of anchor cable, work plane rear back can not advance and inbreak with adopting face, easily cause termination up and down and the outstanding top in a big way, rear of work plane, bring difficulty to roof control during preliminary roof caving; Or, down-hole often occurs that not positive situation installed by the anchor cable caused because of top board out-of-flatness, not only have impact on tunnel attractive in appearance, do not meet roadway support quality criteria requirements, and due to the pallet of anchor cable and the steel strand out of plumb of anchor cable, occur that stress concentrates the phenomenon with shear stress, easily cause the problem such as the loose distortion of the steel strand of anchor cable, anchor cable mistake anchor, affect supporting quality, therefore, in these particular locations and in particular cases, the support action of in good time releasing anchor cable is needed.At present, for common anchor cable, special anchor restorer is adopted to remove anchor cable, to remove its support action.
But, adopt special anchor restorer to remove anchor cable, not only increase equipment purchasing expense, and the use of special anchor restorer, carry inconvenience, equipment management and maintenance cost are increased, thus causes support cost greatly to increase.
Utility model content
The utility model embodiment provides a kind of anchor cable dismounting joint, easy to operate, with low cost, effectively saves support cost.
The utility model embodiment provides a kind of anchor cable dismounting joint, is applied to anchor cable, and described anchor cable comprises steel strand, clamping device and intermediate plate, and described anchor cable dismounting joint has centre bore, and described steel strand are arranged in described centre bore;
Described anchor cable dismounting joint is connected along one end of described centre bore axis direction with described clamping device, the other end of described anchor cable dismounting joint is arranged on jack, during to make that described in described jack pair, steel strand carry out stretch-draw, described intermediate plate is displaced downwardly in described centre bore.
In the utility model one embodiment, one end that described anchor cable dismounting joint is connected with described clamping device has step, and shape and the described clamping device of described step match.
In the utility model one embodiment, the distance between the step of described anchor cable dismounting joint and the side outer rim of described clamping device is between 1mm ~ 5mm.
In the utility model one embodiment, the sidewall of described anchor cable dismounting joint is provided with through hole.
In the utility model one embodiment, described anchor cable dismounting joint one end be arranged on jack is the end face matched with described jack.
The anchor cable dismounting joint that the utility model provides, by installing anchor cable dismounting joint below the clamping device of anchor cable, and coordinate jack to be connected with the steel strand be located in centre bore, when jack pair steel strand carry out stretch-draw, steel strand can drive intermediate plate to move down in the centre bore of anchor cable dismounting joint, intermediate plate is separated with clamping device, thus dismounting anchor cable, to remove the support action of anchor cable, do not need to purchase special anchor restorer, and, the processing of anchor cable dismounting joint is simple, easy to operate, with low cost, effectively save support cost.
Accompanying drawing explanation
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of the anchor cable dismounting joint that Fig. 1 provides for the utility model embodiment one;
The cross-sectional view of the anchor cable dismounting joint that Fig. 2 provides for the utility model embodiment two;
The lateral view of the anchor cable dismounting joint that Fig. 3 provides for the utility model embodiment three;
The application scenarios schematic diagram of the anchor cable dismounting joint that Fig. 4 provides for the utility model one example;
The anchor cable method for dismounting flow chart that Fig. 5 provides for the utility model embodiment four;
The anchor cable method for dismounting flow chart that Fig. 6 provides for the utility model embodiment five.
Description of reference numerals:
1,13: anchor cable dismounting joint;
2: clamping device;
3: steel strand;
4: intermediate plate;
5: jack;
6: centre bore;
7: through hole;
11: top board;
12: anchor cable;
14: stretch-draw instrument;
15: piston;
16: hydraulic cylinder;
17: stretch-draw instrument joystick;
18: control valve.
Detailed description of the invention
For making the object of the utility model embodiment, technical scheme and advantage clearly, below in conjunction with the accompanying drawing in the utility model embodiment, technical scheme in the utility model embodiment is clearly and completely described, obviously, described embodiment is the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The structural representation of the anchor cable dismounting joint that Fig. 1 provides for the utility model embodiment one.As shown in Figure 1, this dismounting joint 1 is applied to anchor cable, and anchor cable comprises steel strand 3, clamping device 2 and intermediate plate 4, and anchor cable dismounting joint 1 has centre bore 6, and steel strand 3 are arranged in centre bore 6; One end of anchor cable dismounting joint 1 centrally hole 6 axis direction is connected with clamping device 2, and the other end of anchor cable dismounting joint 1 is arranged on jack 5, and when carrying out stretch-draw to make jack 5 pairs of steel strand 3, intermediate plate 4 is displaced downwardly in centre bore 6.
In the present embodiment, use the concrete principle of anchor cable dismounting joint dismounting anchor cable as follows: to be arranged on by anchor cable dismounting joint 1 between the clamping device 2 of anchor cable and jack 5, make anchor cable dismounting joint 1 respectively with clamping device 2 and jack 5 close contact, jack is connected with the steel strand be located in centre bore 6, when jack pair steel strand carry out stretch-draw, owing to there is groove inside intermediate plate, steel strand can drive intermediate plate to move down in the centre bore 6 of anchor cable dismounting joint 1, intermediate plate 4 is separated with clamping device 2, clamping device 2 cannot be fixed, thus cause the support action of anchor cable to be removed.
It should be noted that, in the present embodiment, the diameter of centre bore 6 must ensure that intermediate plate 4 can fall into centre bore 6 in the process moved down, i.e. intermediate plate 4 end contact that can not be connected with clamping device 2 with anchor cable dismounting joint 1 in folding process; Further, the face shaping of anchor cable dismounting joint 1 can be the structures such as cylindric, gengon, is not limited in the utility model.
The anchor cable dismounting joint that the present embodiment provides, by installing anchor cable dismounting joint below the clamping device of anchor cable, and coordinate jack to be connected with the steel strand be located in centre bore, when jack pair steel strand carry out stretch-draw, steel strand can drive intermediate plate to move down in the centre bore of anchor cable dismounting joint, intermediate plate is separated with clamping device, thus dismounting anchor cable, to remove the support action of anchor cable, do not need to purchase special anchor restorer, and, the processing of anchor cable dismounting joint is simple, easy to operate, with low cost, effectively save support cost.
The cross-sectional view of the anchor cable dismounting joint that Fig. 2 provides for the utility model embodiment two.One end that anchor cable dismounting joint 1 is connected with clamping device 2 as shown in Figure 2 has step, and shape and the clamping device of step match.
Alternatively, the distance between the step of anchor cable dismounting joint 1 and the side outer rim of clamping device 2 is between 1mm ~ 5mm.
In the present embodiment, step, for placing clamping device 2, makes jack in the process of tension steel strand, can not produce serious relative displacement between anchor cable dismounting joint 1 and clamping device 2, realizes the accurate location of anchor cable dismounting joint 1; And, distance between the step of anchor cable dismounting joint 1 and the side outer rim of clamping device 2 is between 1mm ~ 5mm, not only can make can not produce serious relative displacement between anchor cable dismounting joint 1 and clamping device 2, the installation and removal process of anchor cable dismounting joint 1 can also be made to become laborsaving flexibly.
It should be noted that, in the present embodiment, the step of anchor cable dismounting joint 1 does not contact with intermediate plate 4, avoids jack 5 in the process of tension steel strand 3 because the obstruction of step makes intermediate plate 4 can not move down this problem.
Alternatively, in the anchor cable dismounting joint that the present embodiment provides, centre bore can also be the cylindrical-shaped structure of rule, and clamping device can directly be placed on the end face of anchor cable dismounting joint, make the process of anchor cable dismounting joint more simple, cost is cheaper.
The lateral view of the anchor cable dismounting joint that Fig. 3 provides for the utility model embodiment three.As shown in Figure 3, the sidewall of anchor cable dismounting joint 1 is provided with through hole 7, through hole 7 can make demounting tool pass through, and demounting tool is used for pulling out intermediate plate 4, makes intermediate plate 4 drop on the end face of jack by centre bore 6, realizes the releasing of cable bolting effect.
Alternatively, anchor cable dismounting joint one end be arranged on jack is the end face matched with jack, such as, the end face that anchor cable dismounting joint can be arranged on one end on jack and jack is all set to decorative pattern end face, make jack when tension steel strand, anchor cable dismounting joint can not and jack between produce relative displacement.
In the present embodiment, jack can be the jack of various model, such as, and the outer cylinder bore D=90mm of jack, inner prop outside diameter d=37mm; Piston effective active area A=(D
2-d
2) π/4=5.286 × 103mm2, stretch-draw limit P
max=F
m/ A=37.8MPa, the parameter for jack in the utility model is not limited.The power that jack can be provided by a stretch-draw instrument carrys out tension steel strand, also can obtain power by other means, such as, manually provides power, obtains power etc. by hydraulic pump.
The application scenarios schematic diagram of the anchor cable dismounting joint that Fig. 4 provides for the utility model one example.As shown in Figure 4, this scene comprises top board 11, anchor cable 12, anchor cable dismounting joint 13, jack and stretch-draw instrument 14, and wherein, jack comprises piston 15 and hydraulic cylinder 16.
In the present embodiment, as shown in Figure 5, the detailed process of removing anchor cable is as follows: when removing anchor cable 12, foreign matter above the clamping device first disposing anchor cable 12, anchor cable dismounting joint 13 is installed, afterwards jack is passed steel strand 3, make clamping device, anchor cable dismounting joint 13 contacts closely with jack three, stretch-draw instrument joystick 17 is got to oil-feed to survey, the piston 15 of jack moves down, jack carries out stretch-draw by anchor cable dismounting joint 13 pairs of steel strand 3, when steel strand 3 are gone out certain displacement by stretch-draw, now, intermediate plate is separated with clamping device, clamping device loosens, stretch-draw instrument joystick 17 is got to intervening gears, stop stretch-draw, the demounting tools such as screwdriver are used to pull out intermediate plate by the through hole on anchor cable dismounting joint sidewall, intermediate plate is made to drop down onto on jack by the centre bore of anchor cable dismounting joint, by control valve 18 dozens to pressure release gear, return jack, cable bolting can be realized remove.
Alternatively, for tight roof or roof deformation large, cause anchor cable stressed excessive, effective displacement cannot be produced by anchor cable dismounting joint tension steel strand with jack, when intermediate plate cannot be separated with clamping device, can coordinate after pneumatic pick loosens top board, re-use jack by anchor cable dismounting joint tension steel strand.
The anchor cable method for dismounting flow chart that Fig. 5 provides for the utility model embodiment four.The method is applied on the anchor cable dismounting joint shown in above-mentioned Fig. 1 to Fig. 4 any embodiment, and as shown in Figure 5, the method comprises the steps:
Step 101, anchor cable dismounting joint is installed on the below of anchor cable clamping device, and makes the centre bore of steel strand through anchor cable dismounting joint of anchor cable.
Step 102, jack is installed on the below of anchor cable dismounting joint.
Step 103, be connected with the steel strand of anchor cable by jack, jack pair steel strand carry out stretch-draw, to make the intermediate plate of anchor cable be displaced downwardly in centre bore, and are separated with clamping device.
In the present embodiment, as shown in Figure 1, anchor cable comprises steel strand 3, clamping device 2 and intermediate plate 4, anchor cable dismounting joint 1 is installed on the below of anchor cable clamping device 2, anchor cable dismounting joint 1 has centre bore 6, make the centre bore 6 of steel strand 3 through anchor cable dismounting joint 1 of anchor cable, jack 5 is installed on the below of anchor cable dismounting joint 1, and jack 5 is connected with the steel strand 3 of anchor cable, jack 5 pairs of steel strand 3 carry out stretch-draw, be separated with clamping device 2 to make the intermediate plate 4 of anchor cable, thus dismounting anchor cable, to remove the support action of anchor cable, operating process is simple and convenient, and, in underground coal mine environment, jack is also more conventional, only need the anchor cable dismounting joint carrying light quality can realize the releasing of cable bolting effect, method is simple, safe and reliable.
The anchor cable method for dismounting flow chart that Fig. 6 provides for the utility model embodiment five.As shown in Figure 6, jack pair steel strand carry out stretch-draw, and to make after intermediate plate is separated with clamping device, method also comprises:
Step 104, jack stop steel strand tension.
Step 105, demounting tool to be stretched into from the through hole the sidewall of anchor cable dismounting joint, and pull out intermediate plate.
It should be noted that, in the present embodiment, step 101 is identical with the method step in embodiment four to step 103, repeats no more herein.
In the present embodiment, jack stops steel strand tension, is stretched into by demounting tool, and pull out intermediate plate from the through hole the sidewall of anchor cable dismounting joint, intermediate plate is fallen on a jack by the centre bore of anchor cable dismounting joint, thus relieves the support action of anchor cable.
Alternatively, in the present embodiment, jack pair steel strand carry out stretch-draw, specifically comprise: the power that jack is provided by stretch-draw instrument carries out stretch-draw to steel strand.
In the above-described embodiments, when tension steel strand removes anchor cable, if stretching force is excessive, anchor cable destroys suddenly, there will be two kinds of destruction situations, and a kind of situation is the intensity that the intensity of anchor end of anchorage cable is less than steel strand, first reach the strength limit of anchor end of anchorage cable during stretch-draw, anchor cable is drawn out; Another kind of situation is the intensity that the intensity of anchor end of anchorage cable is greater than steel strand, first the strength limit of steel strand is reached during stretch-draw, anchor cable is pulled off, in order to prevent occurring dynamic impact problem phenomenon because there are suddenly above two kinds of situations in stretching process, the anchor cable dismounting joint using above-described embodiment to provide and anchor cable method for dismounting are dismantled in anchor cable process, can determine the stretch-draw limit, and to anchor cable dismounting joint strength check, specific as follows:
The stretch-draw limit carries out determining specifically to comprise: down-hole general provision anchorage cable anchoring power is not less than 200KN, GB GB/T5224-2003 specifies that the maximum, force of conventional Φ 21.8mm steel strand is not less than 353kN, therefore adopts smaller value 200KN to determine the stretch-draw limit.Anchor cable dismounting joint strength check:
Anchor cable dismounting joint strength check specifically comprises: anchor cable dismounting joint adopts No. 45 steel to process, and GB/T699-1999 standard specifies 45 steel yield strength σ
s>=355MPa, gets safety factor n=1.2, the allowable stress [σ of material
c]=σ
s/ n=295.8MPa; It is A=(D that joint and lockset efficient solution remove area
2-d
2) π/4=1566.1mm
2, the stressed maximum F of joint
max=200KN, σ
max=F
max/ A=127.7MPa < [σ
c], maximum crushing stress does not exceed allowable stress, meets strength condition.
It should be noted that, above-mentionedly determining the stretch-draw limit and be only the releasing in order to better use the anchor cable dismounting joint that provides in the utility model and anchor cable method for dismounting to realize cable bolting effect to anchor cable dismounting joint strength check, is not restrictive condition of the present utility model.
Last it is noted that above each embodiment is only in order to illustrate the technical solution of the utility model, be not intended to limit; Although be described in detail the utility model with reference to foregoing embodiments, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein some or all of technical characteristic; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the scope of each embodiment technical scheme of the utility model.
Claims (5)
1. an anchor cable dismounting joint, is applied to anchor cable, and described anchor cable comprises steel strand, clamping device and intermediate plate, it is characterized in that, described anchor cable dismounting joint has centre bore, and described steel strand are arranged in described centre bore;
Described anchor cable dismounting joint is connected along one end of described centre bore axis direction with described clamping device, the other end of described anchor cable dismounting joint is arranged on jack, during to make that described in described jack pair, steel strand carry out stretch-draw, described intermediate plate is displaced downwardly in described centre bore.
2. anchor cable dismounting joint according to claim 1, is characterized in that, one end that described anchor cable dismounting joint is connected with described clamping device has step, and shape and the described clamping device of described step match.
3. anchor cable dismounting joint according to claim 2, is characterized in that, the distance between the step of described anchor cable dismounting joint and the side outer rim of described clamping device is between 1mm ~ 5mm.
4. the anchor cable dismounting joint according to any one of claim 1-3, is characterized in that, the sidewall of described anchor cable dismounting joint is provided with through hole.
5. anchor cable dismounting joint according to claim 1, is characterized in that, described anchor cable dismounting joint one end be arranged on jack is the end face matched with described jack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520445309.1U CN204716269U (en) | 2015-06-25 | 2015-06-25 | Anchor cable dismounting joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520445309.1U CN204716269U (en) | 2015-06-25 | 2015-06-25 | Anchor cable dismounting joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204716269U true CN204716269U (en) | 2015-10-21 |
Family
ID=54315272
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520445309.1U Expired - Fee Related CN204716269U (en) | 2015-06-25 | 2015-06-25 | Anchor cable dismounting joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204716269U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929668A (en) * | 2015-06-25 | 2015-09-23 | 淮南矿业(集团)有限责任公司 | Anchor cable disassembly joint and anchor cable disassembly method |
-
2015
- 2015-06-25 CN CN201520445309.1U patent/CN204716269U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104929668A (en) * | 2015-06-25 | 2015-09-23 | 淮南矿业(集团)有限责任公司 | Anchor cable disassembly joint and anchor cable disassembly method |
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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: 20151021 |