CN202249837U - Underground drill rig and hydraulic clamping device thereof - Google Patents
Underground drill rig and hydraulic clamping device thereof Download PDFInfo
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- CN202249837U CN202249837U CN2011203800852U CN201120380085U CN202249837U CN 202249837 U CN202249837 U CN 202249837U CN 2011203800852 U CN2011203800852 U CN 2011203800852U CN 201120380085 U CN201120380085 U CN 201120380085U CN 202249837 U CN202249837 U CN 202249837U
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- main shaft
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Abstract
The utility model discloses an underground drill rig and a hydraulic clamping device thereof. The hydraulic clamping device is used for clamping a drill rod of the underground drill rig and comprises a main shaft which is coaxial with the drill rod, a slip recess and slips which are slidably connected with the slip recess, wherein the slips and the slip recess are arranged at an end part of the main shaft, the main shaft is provided with a step end surface, and the slips and the slip recess are respectively lap-jointed with different planes of the step end surface. Since the slips are arranged at the end part of the main shaft, a hole or a groove is not required to be arranged on the main shaft, the existence of the slips does not reduce the strength of the main shaft and the reliability of the main shaft is ensured. Moreover, since the slips are arranged at the end part of the main shaft, a circumferential space for installing the slips is increased, more slips can be installed, the drill rod becomes tighter and more reliable during clamping, the accident rate is reduced and the safety and the reliability of the underground drill rig are improved.
Description
Technical field
The utility model relates to the underground drill rig technical field, particularly relates to a kind of hydraulic clamping device that is used for underground drill rig.In addition, the utility model also relates to a kind of underground drill rig that comprises above-mentioned hydraulic clamping device.
Background technology
Hydraulic clamping device is the fixing vitals of drilling tool in the underground drill rig hole, requires it that enough clamping forces are arranged.Hydraulic clamping device at present commonly used can be divided into open in usual and two kinds of normally closed types by the state of its slips when not working.
Its slips did not unclamp with spring when clamping device open in usual was not worked; Overcome spring force with hydraulic coupling during work and clamp drilling rod, this clamping device structure is comparatively simple, in case but weak point is to break down when oil pressure disappears; Clamping force also disappears at once; This just has very big potential safety hazard, so its scope of application is limited, generally only is used on the nearly horizontal drilling equipment.Its slips did not keep clamped condition when the normally closed type clamping device was not worked under the effect of spring force; Hydraulic coupling overcomes spring force slips is unclamped during work; Provide the space that drilling rod passes through, hydraulic system discharges to treat to put afterwards by drilling rod in place, and slips is the clamping drilling rod under the effect of spring force.In the practice of construction process, when hydraulic system broke down, this clamping device can rely on spring force to clamp drilling rod automatically, guaranteed that drilling tool is in a safe condition, and prevented that the drilling tool counter-rotating from having an accident.Better because of its safety, be used for the multi-angle of constructing, especially on the rig at the big-elevation and the big angle of depression more.
The spring that existing normally closed type clamping device adopts is generally disk spring; For guaranteeing to obtain bigger clamping force, this clamping device often requires the disk spring of a greater number, and the radial dimension of disk spring is also bigger; This just makes that the axial and radial dimension of chuck is bigger; The loading and unloading difficulty, and dynamic moment of inertia is big, when running up, also can produce bigger vibration; In addition because the mode that disk spring leads in adopting is bigger to the main spindle table surface wear.
In order to overcome the defective of above-mentioned oild chuck, the patent No. is that the patent that CN200720304852, name are called " a kind of cylindrically coiled spring formula oild chuck " provides a kind of new-type oild chuck.This patent has substituted disk spring with cylindrically coiled spring; Joining two cylindrically coiled springs with every group of two pull bars has substituted every string disk spring and has joined two pull bars; Increase the quantity of cylindrically coiled spring, both increased clamping force, improved the reliability of chuck; Guarantee the uniformity that drilling rod is stressed, reduced slips body diameter size and dynamic moment of inertia again.Be more suitable for the requirement for dynamic balance that runs up down.
Yet in the above-mentioned patent, slips need be installed in the open slot on the main shaft, has seriously reduced the intensity of main shaft, and this structure slips limited amount that can dispose, and clamping force can not guarantee; Back-moving spring is installed in the two ends of slips, and the difficulty of processing of slips is increased.
Therefore, how improving the intensity of clamping device, improve the reliability of underground drill rig, is the present technical issues that need to address of those skilled in the art.
The utility model content
The purpose of the utility model provides a kind of hydraulic clamping device that is used for underground drill rig, and the intensity of this hydraulic clamping device is high, good reliability.Another purpose of the utility model provides a kind of underground drill rig that comprises above-mentioned hydraulic clamping device.
For realizing above-mentioned utility model purpose; The utility model provides a kind of hydraulic clamping device of underground drill rig, is used for the drilling rod of clamping underground drill rig, comprises main shaft, the slip spider coaxial with said drilling rod; And the slips that is slidingly connected with said slip spider; Said slips and said slip spider all are located at the end of said main shaft, and said main shaft has step end face, said slips and said slip spider respectively with the Different Plane of said step end face overlap joint.
Preferably, said main shaft is equipped with cylindrically coiled spring along being circumferentially with some installing holes in each said installing hole, the end overlap joint of said slip spider and each said cylindrically coiled spring.
Preferably, the cross section of said cylindrically coiled spring is the square-section.
Preferably, said slip spider has some cone tanks that hold said slips, and the cross section on this cone tank edge is a rectangular surfaces.
Preferably, said slip spider is circumferentially with some lubrication holes that radially extend along it, and the outlet of this lubrication hole is positioned at said cone tank.
Preferably, also comprise the back-moving spring circle of each said slips of connecting, be provided with the corresponding peripheral apertures in position in each said slips, said back-moving spring circle passes said peripheral apertures successively.
Preferably, also comprise the hydraulic jack that drives said slip spider, the cylinder body of this hydraulic jack is fixedly connected with said main shaft, and its inside has hydraulic oil channel; The piston of said hydraulic jack has step surface, and this step surface cooperates formation to drive oil pocket with said cylinder body, and said hydraulic oil channel communicates with said driving oil pocket.
Preferably, said piston is connected through bolt with said slip spider.
Preferably; Also comprise with said main shaft and be fixedly connected and be located at the end cap of said slips advance side, the release bolt that screws togather and extend vertically with said end cap; And the locking nut that cooperates with said release bolt, the end of said release bolt can offset with said slip spider.
The utility model also provides a kind of underground drill rig, comprises the hydraulic clamping device of drilling rod and the said drilling rod of clamping, and said hydraulic clamping device is as above-mentioned each described hydraulic clamping device.
The hydraulic clamping device that the utility model provided is used for the drilling rod of clamping underground drill rig, prevents the phenomenon that has a rebound behind the rod boring.This hydraulic clamping device comprises the main shaft coaxial with drilling rod, slip spider and the slips that is slidingly connected with slip spider; Different with prior art is; In the hydraulic clamping device that the utility model provided; Slips and slip spider all are located at the end of main shaft, and main shaft has step end face, slips and slip spider respectively with the Different Plane of step end face overlap joint.In clamping device when work,, slip spider moves with respect to slips, thereby the phase mutual edge distance between slips is changed, and clamps or unclamps drilling rod, realizes the work purpose of clamping device.Slips is located at the end of main shaft, need be on main shaft perforate or fluting, its existence can not reduce the intensity of main shaft, thereby guarantees the reliability of main shaft.Simultaneously, because slips is located at the end of main shaft, the circumferential space that slips can be installed becomes big, and more slips can be installed, thereby tightlier more reliable when making the drilling rod clamping, reduces accident rate, and the security reliability of underground drill rig is improved.
A kind of preferred embodiment in, said main shaft is equipped with cylindrically coiled spring along being circumferentially with some installing holes in each said installing hole, the end of said slip spider and each said cylindrically coiled spring overlaps.Cylindrically coiled spring by the hole wall guiding of installing hole, has increased the reliability of cylindrically coiled spring in installing hole.Simultaneously, with respect to the available technology adopting disk spring, the volume of cylindrically coiled spring is little; Flexible for installation; On the end face of main shaft, a plurality of cylindrically coiled springs can be set, it is bigger to make cylindrically coiled spring act on the active force of slip spider, and then it is bigger to make slips act on the clamping force of drilling rod; Fixing safety and reliability during drilling rod, thus the security reliability of underground drill rig improved.
In another preferred embodiment, said piston is connected through bolt with said slip spider.During piston motion, drive the slip spider that is fixedly connected with it, make slip spider realize moving.Bolt fastening structure is simple, and sound construction is reliable, can reduce the maintenance frequency and the maintenance cost of clamping device.And bolt is easy to buying, can reduce the cost of production of clamping device.
Providing on the basis of above-mentioned hydraulic clamping device, the utility model also provides a kind of underground drill rig that comprises above-mentioned hydraulic clamping device; Because hydraulic clamping device has above-mentioned technique effect, the underground drill rig with this hydraulic clamping device also has the corresponding techniques effect.
Description of drawings
Fig. 1 provides the structural representation of a kind of specific embodiment of hydraulic clamping device for the utility model;
Fig. 2 is the structural representation of slips that the utility model provides and a kind of specific embodiment of slip spider;
Fig. 3 is the right view of slips shown in Figure 2 and slip spider.
The specific embodiment
The core of the utility model provides a kind of hydraulic clamping device that is used for underground drill rig, and the intensity of this hydraulic clamping device is high, good reliability.Another core of the utility model provides a kind of underground drill rig that comprises above-mentioned hydraulic clamping device.
The related advance side of this paper, retreating the nouns of locality such as side, is that the direction during with rod boring is that benchmark defines, and the noun of locality that should be appreciated that among this paper to be adopted should not limit the protection domain of this patent.
In order to make those skilled in the art person understand the utility model scheme better, the utility model is done further to specify below in conjunction with the accompanying drawing and the specific embodiment.
Please refer to Fig. 1, Fig. 1 provides the structural representation of a kind of specific embodiment of hydraulic clamping device for the utility model.
The hydraulic clamping device that the utility model provided is used for the drilling rod of clamping underground drill rig, prevents the phenomenon that has a rebound behind the rod boring.This hydraulic clamping device comprises the main shaft 1 coaxial with drilling rod, slip spider 3 and the slips 4 that is slidingly connected with slip spider 3; Different with prior art is; In the hydraulic clamping device that the utility model provided; Slips 4 and slip spider 3 all are located at the end of main shaft 1, and main shaft 1 has step end face, slips 4 and slip spider 3 respectively with the Different Plane overlap joint of step end face.In clamping device when work,, slip spider 3 moves with respect to slips 4, thereby the phase mutual edge distance of 4 of slips is changed, and clamps or unclamps drilling rod, realizes the work purpose of clamping device.Slips 4 is located at the end of main shaft 1, need be on main shaft 1 perforate or fluting, its existence can not reduce the intensity of main shaft 1, thereby guarantees the reliability of main shaft 1.Simultaneously, because slips 4 is located at the end of main shaft 1, the circumferential space that slips 4 can be installed becomes big, and more slips 4 can be installed, thereby tightlier more reliable when making the drilling rod clamping, reduces accident rate, and the security reliability of underground drill rig is improved.
Particularly, main shaft 1 is equipped with cylindrically coiled spring 6 along being circumferentially with some installing holes in each installing hole, and slip spider 3 overlaps with the end of each cylindrically coiled spring 6.Cylindrically coiled spring 6 by the hole wall guiding of installing hole, has increased the reliability of cylindrically coiled spring 6 in installing hole.Simultaneously, with respect to the available technology adopting disk spring, the volume of cylindrically coiled spring 6 is little; Flexible for installation; On main shaft 1 end face of same size, a plurality of cylindrically coiled springs 6 can be set, it is bigger to make cylindrically coiled spring 6 act on the active force of slip spider 3, and then it is bigger to make slips 4 act on the clamping force of drilling rod; Fixing safety and reliability during drilling rod, thus the security reliability of underground drill rig improved.And for the clamping device that same chucking power only need be provided; Adopt cylindrically coiled spring 6 to replace disk spring can effectively reduce the volume of clamping device; Make the volume of clamping device can be littler, facilitate, meet the development trend of engineering machinery for engineering machinery maximizes.
Further, the cross section of above-mentioned cylindrically coiled spring 6 can be the square-section.The technician of mechanical field knows that the cylindrically coiled spring 6 of square-section is better with respect to the spring transmission force property in other cross section, and supporting capacity is stronger, can satisfy bigger support force demand with the square-section cylindrically coiled spring 6 of reduced size.Therefore, more help reducing the overall volume of clamping device.
In a kind of concrete embodiment, slip spider 3 can have some cone tanks that hold slips 4, and the cross section of this cone tank is a rectangular surfaces.Slips 4 is arranged in the cone tank, under the effect of slip spider 3, concentrates the clamping drilling rod to the centre, perhaps outwards separately unclamps drilling rod.The cross section of cone tank is a rectangular surfaces, and its difficulty of processing is little, is easy to realize, can effectively reduce the processing cost of slip spider 3.
Please refer to Fig. 2 and Fig. 3, Fig. 2 is the structural representation of slips that the utility model provides and a kind of specific embodiment of slip spider; Fig. 3 is the right view of slips shown in Figure 2 and slip spider.
In further technical scheme, can be at the some lubrication holes 31 that radially extend of circumferentially being provided with of slip spider 3, and the outlet of lubrication hole 31 is in cone tank.Should be appreciated that in the cone tank at each slips 4 places all has a corresponding with it lubrication hole 31, makes each slips 4 all can obtain effectively lubricating.When slips 4 moved with respect to slip spider 3, the lubrication oil in the lubrication hole 31 can effectively reduce the force of sliding friction of 3 of slips 4 and slip spiders, makes both slips more flexible, drilling rod clamp or when unclamping slips 4 reactions faster, the operating efficiency of underground drill rig is higher.
A kind of preferred embodiment in, the hydraulic clamping device that the utility model provided also comprises the back-moving spring circle 7 of each slips 4 of connecting, and is provided with the corresponding peripheral apertures in position in each slips 4, back-moving spring circle 7 passes peripheral apertures successively.Back-moving spring circle 7 utilizes its bounce, can each slips 4 all be fixed on the slip spider 3, thereby effectively avoid each slips 4 loosening and skew, improves the clamping force when clamping.Simultaneously, it is identical to be positioned at the active force that same circumferential back-moving spring circle 7 acts on each slips 4, and each slips 4 can effectively be kept when clamping or unclamping synchronously, makes drilling rod stressed more even.
Particularly, above-mentioned hydraulic clamping device can also comprise the hydraulic jack that drives slip spider 3, and the cylinder body 8 of this hydraulic jack is fixedly connected with main shaft 1, and its inside has hydraulic oil channel 81; The piston 2 of hydraulic jack has step surface, and this step surface cooperates formation to drive oil pocket 9 with cylinder body 8, and hydraulic oil channel 81 communicates with driving oil pocket 9.The hydraulic clamping device that the utility model provided is the closed type clamping device, and each cylindrically coiled spring 6 can all be in its pre-compressed state, and himself bounce promotes slip spider 3 side shifting of marching forward, and clamps drilling rods thereby promote slips 4.In the time of need unclamping drilling rod, charge into hydraulic oil in the hydraulic oil channel 81, make the hydraulic oil that drives in the oil pocket 9 act on the step surface of piston 2, promote piston 2 side shifting of drawing back, and then drive the chuck seat side shifting of drawing back, thereby unclamp slips 4.This moment, slip spider 3 compression cylindrically coiled springs 6 increased the deflection of cylindrically coiled spring 6.
In a kind of concrete embodiment, piston 2 can be fixedly connected through bolt 5 with slip spider 3.During piston 2 motions, drive the slip spider 3 that is fixedly connected with it, make slip spider 3 realize moving.Bolt 5 syndetons are simple, and sound construction is reliable, can reduce the maintenance frequency and the maintenance cost of clamping device.And bolt 5 is easy to buying, can reduce the cost of production of clamping device.
Further; Above-mentioned hydraulic clamping device can also comprise with main shaft 1 and is fixedly connected and is located at the end cap 10 of slips 4 advance side, the release bolt 11 that screws togather and extend vertically with end cap 10; And the locking nut 12 that cooperates with release bolt 11, the end that discharges bolt 11 can offset with slips 4 covers.When hydraulic clamping device is in proper working order, discharges bolt 11 and be fixed on the end cap 10 through locking nut 12, the number of locking nut 12 can be one; Also can when hydraulic jack lost efficacy, can locking nut 12 be pulled down for two or more; Utilize release bolt 11 to hold out against slip spider 3 vertically; Promote slip spider 3 side shifting of drawing back, thereby unclamp drilling rod, make the reliability of clamping device higher.
Except above-mentioned hydraulic clamping device, the utility model also provides a kind of underground drill rig that comprises above-mentioned hydraulic clamping device, and hydraulic clamping device is used to clamp the drilling rod of underground drill rig, guarantees can not rebound behind the rod boring.The structure of these other each several parts of underground drill rig please refer to prior art, and this paper repeats no more.
More than underground drill rig and hydraulic clamping device thereof that the utility model provided have been carried out detailed introduction.Used concrete example among this paper the principle and the embodiment of the utility model are set forth, the explanation of above embodiment just is used to help to understand the method and the core concept thereof of the utility model.Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (10)
1. the hydraulic clamping device of a underground drill rig; The drilling rod that is used for the clamping underground drill rig comprises main shaft, the slip spider coaxial with said drilling rod, and the slips that is slidingly connected with said slip spider; It is characterized in that; Said slips and said slip spider all are located at the end of said main shaft, and said main shaft has step end face, said slips and said slip spider respectively with the Different Plane of said step end face overlap joint.
2. the hydraulic clamping device of underground drill rig according to claim 1 is characterized in that, said main shaft is equipped with cylindrically coiled spring along being circumferentially with some installing holes in each said installing hole, the end overlap joint of said slip spider and each said cylindrically coiled spring.
3. the hydraulic clamping device of underground drill rig according to claim 2 is characterized in that, the cross section of said cylindrically coiled spring is the square-section.
4. according to the hydraulic clamping device of each described underground drill rig of claim 1 to 3, it is characterized in that said slip spider has some cone tanks that hold said slips, the cross section on this cone tank edge is a rectangular surfaces.
5. the hydraulic clamping device of underground drill rig according to claim 4 is characterized in that, said slip spider is circumferentially with some lubrication holes that radially extend along it, and the outlet of this lubrication hole is positioned at said cone tank.
6. according to the hydraulic clamping device of each described underground drill rig of claim 1 to 3; It is characterized in that; The back-moving spring circle that also comprises each said slips of connecting is provided with the corresponding peripheral apertures in position in each said slips, said back-moving spring circle passes said peripheral apertures successively.
7. according to the hydraulic clamping device of each described underground drill rig of claim 1 to 3, it is characterized in that, also comprise the hydraulic jack that drives said slip spider, the cylinder body of this hydraulic jack is fixedly connected with said main shaft, and its inside has hydraulic oil channel; The piston of said hydraulic jack has step surface, and this step surface cooperates formation to drive oil pocket with said cylinder body, and said hydraulic oil channel communicates with said driving oil pocket.
8. the hydraulic clamping device of underground drill rig according to claim 7 is characterized in that, said piston is connected through bolt with said slip spider.
9. the hydraulic clamping device of underground drill rig according to claim 8; It is characterized in that; Also comprise with said main shaft and be fixedly connected and be located at the end cap of said slips advance side, the release bolt that screws togather and extend vertically with said end cap; And the locking nut that cooperates with said release bolt, the end of said release bolt can offset with said slip spider.
10. underground drill rig comprises the hydraulic clamping device of drilling rod and the said drilling rod of clamping it is characterized in that said hydraulic clamping device is like each described hydraulic clamping device of claim 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203800852U CN202249837U (en) | 2011-09-30 | 2011-09-30 | Underground drill rig and hydraulic clamping device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203800852U CN202249837U (en) | 2011-09-30 | 2011-09-30 | Underground drill rig and hydraulic clamping device thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202249837U true CN202249837U (en) | 2012-05-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203800852U Expired - Fee Related CN202249837U (en) | 2011-09-30 | 2011-09-30 | Underground drill rig and hydraulic clamping device thereof |
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| Country | Link |
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| CN (1) | CN202249837U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877800A (en) * | 2012-10-27 | 2013-01-16 | 无锡巨通矿山机械有限公司 | Spring type clamp |
| CN106150403A (en) * | 2016-08-26 | 2016-11-23 | 陕西斯达煤矿安全装备有限公司 | A kind of drill head using mechanical gripper |
| CN109083604A (en) * | 2018-08-30 | 2018-12-25 | 江苏如东联丰石油机械有限公司 | A kind of novel hinge pin formula chuck |
| CN112012677A (en) * | 2020-08-19 | 2020-12-01 | 张先琼 | Chuck plate assembly device and method for stabilizing height of underground drill rig for mining |
| CN113622842A (en) * | 2021-09-23 | 2021-11-09 | 中煤科工集团重庆研究院有限公司 | Wedge-shaped block clamping type hydraulic sealing water-through device for coal mine drilling machine |
-
2011
- 2011-09-30 CN CN2011203800852U patent/CN202249837U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102877800A (en) * | 2012-10-27 | 2013-01-16 | 无锡巨通矿山机械有限公司 | Spring type clamp |
| CN106150403A (en) * | 2016-08-26 | 2016-11-23 | 陕西斯达煤矿安全装备有限公司 | A kind of drill head using mechanical gripper |
| CN106150403B (en) * | 2016-08-26 | 2018-08-03 | 陕西斯达防爆安全科技股份有限公司 | A kind of drill head using mechanical gripper |
| CN109083604A (en) * | 2018-08-30 | 2018-12-25 | 江苏如东联丰石油机械有限公司 | A kind of novel hinge pin formula chuck |
| CN112012677A (en) * | 2020-08-19 | 2020-12-01 | 张先琼 | Chuck plate assembly device and method for stabilizing height of underground drill rig for mining |
| CN112012677B (en) * | 2020-08-19 | 2022-05-17 | 湖南黄金洞大万矿业有限责任公司 | High-stability chuck assembly device and method for underground drill rig for mining |
| CN113622842A (en) * | 2021-09-23 | 2021-11-09 | 中煤科工集团重庆研究院有限公司 | Wedge-shaped block clamping type hydraulic sealing water-through device for coal mine drilling machine |
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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 |
Granted publication date: 20120530 Termination date: 20150930 |
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| EXPY | Termination of patent right or utility model |