CN112627870B - Hollow grouting anchor rod rotary head - Google Patents
Hollow grouting anchor rod rotary head Download PDFInfo
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- CN112627870B CN112627870B CN202011522731.4A CN202011522731A CN112627870B CN 112627870 B CN112627870 B CN 112627870B CN 202011522731 A CN202011522731 A CN 202011522731A CN 112627870 B CN112627870 B CN 112627870B
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- rotary
- shaft sleeve
- anchor rod
- shaft
- main shaft
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/003—Machines for drilling anchor holes and setting anchor bolts
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D20/00—Setting anchoring-bolts
- E21D20/02—Setting anchoring-bolts with provisions for grouting
- E21D20/028—Devices or accesories for injecting a grouting liquid in a bore-hole
Abstract
The invention relates to a hollow grouting anchor rod rotary head. The anchor rod solves the problems that in the prior art, the anchor rod is poor in stability, not easy to detach, poor in grouting effect and the like. The grouting drill bit is arranged on a sliding seat on a propelling beam, the sliding seat is connected with the propelling beam in a sliding mode, a supporting frame is arranged on the sliding seat, a first shaft sleeve is arranged at one end of the supporting frame, a second shaft sleeve is arranged at one end of the first shaft sleeve, a motor is arranged on the supporting frame, the motor is connected with a rotary main shaft, the rotary main shaft is connected with a rotary drill bit tail, one end of the rotary main shaft is connected with the rotary drill bit tail through a detachable structure, a connecting sleeve is arranged at the other end of the rotary drill bit tail, a slurry channel is arranged in the rotary drill bit tail, a slurry cavity is arranged between the rotary drill bit tail and the second shaft sleeve, and the slurry cavity is communicated with a grouting joint. The invention has the advantages of stable operation, good grouting effect, easy disassembly and the like.
Description
Technical Field
The invention belongs to the technical field of engineering equipment, and particularly relates to a hollow grouting anchor rod rotary head.
Background
Along with the popularization and development of the anchor rod supporting operation of underground engineering and the improvement of the requirement of safety production of underground at home and abroad, the anchor rod trolley is produced. At present, the types of anchor rods are various, but the anchor rod trolley mainly takes a solid anchor rod (such as deformed steel bar) and a hollow anchor rod as main parts, and the two anchor rods are also very wide in practical application. For solid and hollow bolts, the supporting operation flows of the solid and the hollow bolts are also different, and the solid bolts comprise: drilling a bolt hole, grouting and inserting a bolt. Hollow anchor rod: drilling a bolt hole, inserting a bolt and grouting. In terms of hollow anchor rods, how to combine the anchor rod inserting and grouting processes efficiently becomes a major research subject of anchor rod trolleys. Meanwhile, the grouting swivel head is a core component of the anchor rod trolley, the performance of the grouting swivel head directly determines the performance of the whole grouting swivel head, and the design and the data of the swivel head are rare at home and abroad at present. In addition, the stability of the swivel head of a common anchor rod is poor, and the grouting effect of some anchor rods is not satisfactory, so that the final reinforcing effect of the anchor rod cannot achieve the expected effect.
In order to solve the defects of the prior art, people have long searched for and put forward various solutions. For example, chinese patent document discloses a combined self-advancing grouting anchor [ application No.: 201610168782.9], including the cavity slip casting stock body, the cavity slip casting stock body sets up the slip casting passageway, and cavity slip casting stock body front boom surface sets up barb form screw thread anchor section, cavity slip casting stock body front boom pass through the combination formula adapter sleeve and be connected with cavity slip casting stock body back beam, the tip of cavity slip casting stock body front boom install the anchor head, the grout outlet of anchor head communicates with each other with the slip casting passageway of cavity slip casting stock, cavity slip casting stock body radial processing have a plurality ofly with the communicating slip casting hole of slip casting passageway, cavity slip casting stock body back beam on install the grout stop, the grout stop be connected with the anchor backing plate, the anchor backing plate be connected with the nut, cavity slip casting stock body back beam end portion install the shutoff stopper. This stock stable in quality can guarantee sufficient withdrawal resistance, can prevent again that the stock from taking place the front force and destroying, and the slip casting is full, increases the anchor power of stock and country rock, strengthens strutting the effect.
Above-mentioned scheme has solved to a certain extent that current stock quality is poor, damages easily, the poor problem of slip casting effect, nevertheless still has a great deal of not enough, for example, the stability of stock operation is not high, and the stock is dismantled inconveniently, is unfavorable for the clearance and the maintenance of stock.
Disclosure of Invention
The invention aims to solve the problems and provides the hollow grouting anchor rod rotary head which is reasonable in design, stable in operation, good in grouting effect and easy to disassemble.
In order to achieve the purpose, the invention adopts the following technical scheme: the hollow grouting anchor rod rotary head is arranged on a sliding seat on a pushing beam, the sliding seat is connected with the pushing beam in a sliding mode, the rotary head comprises a support frame arranged on the sliding seat, one end of the support frame is provided with a first shaft sleeve through a first dismounting structure, one end of the first shaft sleeve is provided with a second shaft sleeve through a second dismounting structure, a driving motor is detachably arranged on the support frame, a front end output shaft of the driving motor extends into the first shaft sleeve and is connected with a rotary main shaft located in the first shaft sleeve, the rotary main shaft is connected with the first shaft sleeve through a first circumferential rotating structure, one end of the rotary main shaft is provided with a rotary drill rod tail which is coaxially arranged with the rotary main shaft and located in the second shaft sleeve, the rotary drill rod tail is connected with the second shaft sleeve through a second circumferential rotating structure, and one end of the rotary main shaft is connected with the rotary drill rod tail through a rotary drill rod capable of circumferentially positioning the rotary main shaft and the rotary drill rod tail in an axial direction The detachable easy-to-detach structure is connected, the other end of the rotary drill rod extends to the outer side of the second shaft sleeve, a connecting sleeve used for mounting the hollow anchor rod is detachably mounted at the other end of the rotary drill rod, a slurry channel extending axially is arranged in the rotary drill rod, a slurry cavity communicated with the slurry channel is formed between the rotary drill rod and the second shaft sleeve, and a grouting joint communicated with the slurry cavity is arranged on the outer side of the second shaft sleeve. The detachable structure enables the motor, the rotating main shaft and the rotating drill shank to be conveniently detached and easy to clean and maintain; the driving motor runs stably, the noise is low, and the rotation pressure of the main shaft is well controlled by adjusting the oil inlet pressure of the motor, so that the anchor rod runs stably; the mud cavity in the rotary drill bit shank is properly connected with the mud channel, mud is fully injected, and the grouting effect is good.
In the hollow grouting anchor rod rotary head, the easily detachable structure comprises a straight groove arranged on one end face of the rotary main shaft or the rotary drill rod tail, a positioning lug corresponding to the straight groove is arranged on the end face of the rotary drill rod tail or one end face of the rotary main shaft, the positioning lug is inserted in the straight groove, a wear-resistant copper pad is arranged between the positioning lug and the straight groove, the rotary drill rod tail is long in service life, and the rotary drill rod tail is easy to replace.
In the hollow grouting anchor rod rotary head, the driving motor is arranged on the support frame through the fastener, and the front end output shaft of the driving motor is connected with the rotary main shaft through the spline connection mode, so that a transmission intermediate part of the anchor rod is omitted, and the hollow grouting anchor rod rotary head is simple in structure, small in size, light in weight and convenient to carry.
In the hollow grouting anchor rod rotary head, the first circumferential rotating structure comprises two tapered roller bearings correspondingly arranged on the circumferential inner sides of the first shaft sleeve, the rotary main shaft penetrates through the tapered roller bearings, and a round nut stop washer which are abutted against the tapered roller bearings are respectively arranged on the circumferential outer side of one end, close to the front end output shaft, of the rotary main shaft; the second circumferential rotating structure comprises two needle roller bearings which are respectively arranged on the circumferential inner side of the second shaft sleeve, the rotary drill rod is arranged on the needle roller bearings in a penetrating mode, and the bearing capacity of the rotary drill rod is large.
In the hollow grouting anchor rod rotary head, a grease lubrication cavity is formed on the inner side of the circumferential direction of the second shaft sleeve, the needle roller bearing is positioned in the grease cavity, and a grease nipple and a breathing cap which are communicated with the grease lubrication cavity are respectively arranged on the outer side of the circumferential direction of the first shaft sleeve and/or the second shaft sleeve, so that waste gas can be conveniently discharged.
In the hollow grouting anchor rod rotary head, the inner side of the periphery of the second shaft sleeve is provided with an annular groove, the rotary drill rod tail is provided with a slurry hole communicated with the slurry channel, and the slurry cavity is formed between the slurry hole and the annular groove.
In the hollow grouting anchor rod rotary head, the circumferential inner side of the second shaft sleeve is sequentially provided with the rotary GREEN ring and the slurry combined sealing ring which are sleeved on the circumferential outer side of the rotary drill bit shank, and the rotary GREEN ring and the slurry combined sealing ring are respectively positioned between the slurry cavity and the butter lubricating cavity.
In the hollow grouting anchor rod rotary head, the first dismounting structure comprises an installation plate arranged at one end of the first shaft sleeve, and the installation plate is connected with an installation concave table on the support frame through a first fastener; one end of the second shaft sleeve, which is close to the connector, is sealed by an end cover, the rotary drill bit shank and the end cover are provided with dustproof rings, and framework oil seals are respectively arranged between the end cover and the second shaft sleeve and between the first shaft sleeve and the mounting concave table.
In foretell cavity slip casting stock rotary head, the second dismantle the structure including setting up the fixed flange dish that is close to second shaft sleeve one end at first shaft sleeve, second shaft sleeve one end be equipped with the corresponding cooperation flange dish of ring flange, just fixed flange dish and cooperation flange dish between link to each other through the second fastener, fixed flange dish and cooperation flange dish between, be equipped with O type circle between end cover and the second shaft sleeve and between first shaft sleeve and the installation concave station respectively, can play fine sealed and dustproof effect.
In the hollow grouting anchor rod rotary head, one side of the propelling beam is provided with an anchor rod bin, the anchor rod bin is provided with a plurality of hollow anchor rods, one side of the end part of the propelling beam is provided with a manipulator corresponding to the anchor rod bin, and the propelling beam is respectively provided with a propelling oil cylinder and a pipe following wheel.
Compared with the prior art, the invention has the advantages that: the easy-to-detach structure of the anchor rod enables a plurality of components to be detached and repaired conveniently; the anchor rod is provided with the motor, so that the anchor rod can stably move; the anchor rod has good grouting effect and high working efficiency; the rotary drill bit shank of the anchor rod has the advantages of large bearing capacity, convenience in replacement and good internal sealing effect of the rotary head, and is suitable for the severe environment in which the anchor rod is in operation.
Drawings
FIG. 1 is a schematic view of the present invention in position on a feed beam;
FIG. 2 is a structural cross-sectional view of the present invention;
fig. 3 is a partial exploded view of the present invention.
In the figure, a propelling beam 1, a sliding seat 11, a rock bolt bin 12, a mechanical arm 13, a propelling oil cylinder 14, a pipe following wheel 15, a support frame 2, a first dismounting structure 21, a driving motor 22, a mounting concave table 23, a first shaft sleeve 3, a tapered roller bearing 31, a round nut 32, a round nut stop washer 33, a mounting plate 34, a first fastener 35, a flange plate 36, a second fastener 37, a second shaft sleeve 4, a second dismounting structure 41, a needle roller bearing 42, a grease lubrication cavity 43, a grease nipple 44, a breathing cap 45, an annular groove 46, an end cover 47, a matching flange plate 48, a rotary main shaft 5, a first circumferential rotating structure 51, a framework oil seal 52, a rotary drill rod tail 6, a second circumferential rotating structure 61, a mud cavity 62, a mud channel 63, a mud injection joint 64, a mud hole 65, a ledebugged ring 66, a mud combined sealing ring 67, a dust ring 68, a straight groove 7, a positioning convex block 71, a positioning convex block 72, a positioning concave block 23, a mounting concave block 4, a mounting concave block, a mounting structure, a conical roller bearing, a conical, Wear-resisting copper pad 73, adapter sleeve 8, hollow stock 81, O type circle 9.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1-3, the hollow grouting anchor rod rotary head is arranged on a sliding seat 11 on a propelling beam 1, and the sliding seat 11 is connected with the propelling beam 1 in a sliding manner, the rotary head comprises a support frame 2 arranged on the sliding seat 11, one end of the support frame 2 is provided with a first shaft sleeve 3 through a first dismounting structure 21, further, one end of the first shaft sleeve 3 is provided with a second shaft sleeve 4 through a second dismounting structure 41, a driving motor 22 is detachably arranged on the support frame 2, obviously, the front end output shaft of the driving motor 22 extends into the first shaft sleeve 3 and is connected with a rotary main shaft 5 positioned in the first shaft sleeve 3, the rotary main shaft 5 is connected with the first shaft sleeve 3 through a first circumferential rotating structure 51, one end of the rotary main shaft 5 is provided with a rotary drill rod tail 6 which is coaxially arranged with the rotary main shaft 5 and is positioned in the second shaft sleeve 4, the rotary drill bit shank 6 is connected with the second shaft sleeve 4 through a second circumferential rotating structure 61, one end of the rotary main shaft 5 is connected with the rotary drill bit shank 6 through a detachable structure 7 which can circumferentially position the rotary main shaft 5 and the rotary drill bit shank 6 and can be axially detached, furthermore, the other end of the rotary drill bit shank 6 extends to the outer side of the second shaft sleeve 4 and is detachably provided with a connecting sleeve 8 for mounting a hollow anchor rod 81, the rotary drill bit shank 6 is internally provided with an axially extending slurry channel 63, a slurry cavity 62 communicated with the slurry channel 63 is formed between the rotary drill bit shank 6 and the second shaft sleeve 4, the outer side of the second shaft sleeve 4 is provided with a slurry injection joint 64 communicated with the slurry cavity 62, for example, when the anchor rod runs, the rotary head of the anchor rod can slide on the sliding seat 11, and when the motor 22, the rotary main shaft 5 or the rotary drill bit shank 6 fails, the rotary drill bit shank can be detached and maintained through a detaching means, when the motor 22 is running, the rotary head starts to work, the motor 22 drives the rotary main shaft 5 to control the rotary pressure, the rotary main shaft 5 transmits the torque to the rotary drill bit tail 6, and when the anchor rod runs, mud enters the grouting joint 64 and passes through the mud cavity 62 to be shaped through the hollow anchor rod 81 connected with the connecting sleeve 8.
Obviously, the detachable structure 7 includes a straight groove 71 disposed on an end surface of the rotary spindle 5 or the rotary shank 6, a positioning protrusion 72 corresponding to the straight groove 71 is disposed on the end surface of the rotary shank 6 or the rotary spindle 5, the positioning protrusion 72 is inserted into the straight groove 71, and a wear-resistant copper pad 73 is disposed between the positioning protrusion 72 and the straight groove 71, so that the rotary spindle 5 and the rotary shank 6 can be axially detached.
Preferably, the driving motor 22 is disposed on the supporting frame 2 by a fastener, and a front end output shaft of the driving motor 22 is connected to the rotary main shaft 5 by a spline coupling. The first circumferential rotating structure 51 comprises two tapered roller bearings 31 correspondingly arranged on the circumferential inner sides of the first shaft sleeve 3, the rotary main shaft 5 penetrates through the tapered roller bearings 31, and a circular nut 32 and a circular nut stop washer 33 which are abutted against the tapered roller bearings 31 are respectively arranged on the circumferential outer sides of one ends, close to the front end output shaft, of the rotary main shaft 5; that is, by the round nut 32 and the round nut stopper washer 33, the bearing play can be adjusted, the second circumferential direction rotation structure 61 includes two needle roller bearings 42 respectively provided on the inner side in the circumferential direction of the second sleeve 4, and the rotary shank 6 is inserted through the needle roller bearings 42.
Further, a grease lubrication chamber 43 is formed on the circumferential inner side of the second sleeve 4, the needle roller bearing 42 is located in the grease chamber 43, and a grease nipple 44 and a breathing cap 45 which are communicated with the grease lubrication chamber 43 are respectively arranged on the circumferential outer side of the first sleeve 3 and/or the second sleeve 4. Obviously, grease enters through the grease nipple 44 to lubricate, useless gas in the cavity is exhausted out of the cavity through the breather cap 45, furthermore, the second shaft sleeve 4 is provided with an annular groove 46 at the circumferential inner side, a slurry hole 65 communicated with a slurry channel 63 is arranged on the rotary drill bit 6, and the slurry cavity 62 is formed between the slurry hole 65 and the annular groove 46. The inner side of the second shaft sleeve 4 in the circumferential direction is sequentially provided with a rotary GREEN ring 66 and a mud combined sealing ring 67 which are sleeved on the outer side of the rotary drill bit 6 in the circumferential direction, and the rotary GREEN ring 66 and the mud combined sealing ring 67 are respectively positioned between the mud cavity 62 and the butter lubricating cavity 43.
Specifically, the first dismounting structure 21 comprises a mounting plate 34 arranged at one end of the first shaft sleeve 3, and the mounting plate 34 is connected with the mounting concave platform 23 on the support frame 2 through a first fastening piece 35; one end of the second shaft sleeve 4 close to the connector is sealed by an end cover 47, the rotary drill bit 6 and the end cover 47 are provided with dustproof rings 68, and framework oil seals 52 are respectively arranged between the end cover 47 and the second shaft sleeve 4 and between the first shaft sleeve 3 and the mounting concave table 23.
Further, the second dismounting structure 41 comprises a fixed flange 36 arranged at one end of the first shaft sleeve 3 close to the second shaft sleeve 4, a matching flange 48 corresponding to the flange 36 is arranged at one end of the second shaft sleeve 4, the fixed flange 36 and the matching flange 48 are connected through a second fastening piece 37, obviously, the first shaft sleeve 3 and the second peripheral sleeve 4 are connected through the flange 36, the rotary main shaft 5 and the rotary drill rod tail 6 are respectively embedded into the shaft sleeves, and O-rings 9 are respectively arranged between the fixed flange 36 and the matching flange 48, between the end cover 47 and the second shaft sleeve 4, and between the first shaft sleeve 3 and the mounting concave platform 23.
In addition, an anchor rod bin 12 is arranged on one side of the push beam 1, a plurality of hollow anchor rods 81 are arranged on the anchor rod bin 12, a manipulator 13 corresponding to the anchor rod bin 12 is arranged on one side of the end portion of the push beam 1, and the push beam 1 is respectively provided with a push oil cylinder 14 and a pipe following wheel 15. Visibly, the manipulator 13 is operated by command, the rotating head is pushed on the push beam 1, the anchor rod is led into the rock soil, and slurry is injected until the anchor rod reinforces the rock soil.
The principle of the embodiment is as follows: the hollow grouting anchor rod rotary head is arranged on a sliding seat 11, a propulsion beam 1 is connected with the sliding seat 11 in a sliding way, a plurality of hollow anchor rods 81 are arranged in the anchor rod bin in the circumferential direction, when the anchor rods operate, a manipulator 13 carries out grabbing commands, the anchor rod rotary head can slide on the sliding seat 11, the anchor rods are guided into anchor rod holes drilled by the hollow anchor rods 81 under the propelling action of the propulsion beam 1, a support frame 2 of the rotary head is fixed on the sliding seat 11, a driving motor 22 is detachably arranged on the support frame 2, the motor 22 realizes stepless speed regulation and controls the rotary pressure, the motor 22 is connected with a rotary main shaft 5, the rotary main shaft 5 is connected with a rotary drill rod tail 6, a connecting sleeve 8 is arranged at the end part of the rotary drill rod tail 6, a slurry channel 63 extending in the axial direction is arranged in the rotary drill rod tail 6 and is communicated with a slurry cavity 62 in a hollow way, slurry or crude oil is injected into a grouting joint 64 and enters the slurry channel 63 through the slurry cavity 62, the connecting sleeve 8 enters the hollow anchor rod 81 for solidification and reinforcement, so that the supporting effect is enhanced.
The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.
Although the push beam 1, the sliding seat 11, the anchor rod cabin 12, the manipulator 13, the push cylinder 14, the pipe-following wheel 15, the support frame 2, the first detaching structure 21, the driving motor 22, the mounting concave 23, the first bushing 3, the tapered roller bearing 31, the round nut 32, the round nut stop washer 33, the mounting plate 34, the first fastening member 35, the flange plate 36, the second fastening member 37, the second bushing 4, the second detaching structure 41, the needle roller bearing 42, the grease lubrication chamber 43, the grease nipple 44, the breathing cap 45, the annular groove 46, the end cover 47, the mating flange plate 48, the rotary main shaft 5, the first circumferential rotating structure 51, the framework oil seal 52, the rotary drill rod tail 6, the second circumferential rotating structure 61, the mud chamber 62, the mud passage 63, the mud injection joint 64, the mud hole 65, the Glare ring 66, the mud combined sealing ring 67, the dust ring 68, the detachable structure 7, the drilling tool, the, The terms of the slotted groove 71, the positioning lug 72, the wear-resistant copper pad 73, the connecting sleeve 8, the hollow anchor 81, the O-ring 9, etc., do not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. A hollow grouting anchor rod rotary head is arranged on a sliding seat (11) on a propelling beam (1), and the sliding seat (11) is connected with the propelling beam (1) in a sliding manner, and is characterized in that the rotary head comprises a support frame (2) arranged on the sliding seat (11), one end of the support frame (2) is provided with a first shaft sleeve (3) through a first dismounting structure (21), one end of the first shaft sleeve (3) is provided with a second shaft sleeve (4) through a second dismounting structure (41), a driving motor (22) is detachably arranged on the support frame (2), a front end output shaft of the driving motor (22) extends into the first shaft sleeve (3) and is connected with a rotary main shaft (5) positioned in the first shaft sleeve (3), the rotary main shaft (5) is connected with the first shaft sleeve (3) through a first circumferential rotating structure (51), one end of the rotary main shaft (5) is provided with a rotary drill rod tail (6) which is coaxially arranged with the rotary main shaft (5) and is positioned in the second shaft sleeve (4), the rotary drill rod tail (6) is connected with the second shaft sleeve (4) through a second circumferential rotating structure (61), one end of the rotary main shaft (5) is connected with the rotary drill rod tail (6) through an easy disassembly structure (7) which can circumferentially position the rotary main shaft (5) and the rotary drill rod tail (6) and is axially detachable, the other end of the rotary drill rod tail (6) extends to the outer side of the second shaft sleeve (4) and is detachably provided with a connecting sleeve (8) used for installing a hollow anchor rod (81), the rotary drill rod tail (6) is internally provided with an axially extending slurry channel (63), and a slurry cavity (62) communicated with the slurry channel (63) is formed between the rotary drill rod tail (6) and the second shaft sleeve (4), and a grouting joint (64) communicated with the mud cavity (62) is arranged on the outer side of the second shaft sleeve (4).
2. The hollow grouting anchor rod rotary head according to claim 1, characterized in that the easily detachable structure (7) comprises a straight groove (71) arranged on one end face of the rotary main shaft (5) or the rotary shank adapter (6), a positioning lug (72) corresponding to the straight groove (71) is arranged on one end face of the rotary shank adapter (6) or the rotary main shaft (5), the positioning lug (72) is inserted into the straight groove (71), and a wear-resistant copper pad (73) is arranged between the positioning lug (72) and the straight groove (71).
3. The hollow grouting anchor rod rotary head according to claim 2, characterized in that the driving motor (22) is arranged on the support frame (2) through a fastener, and the front end output shaft of the driving motor (22) is connected with the rotary main shaft (5) through a spline connection mode.
4. The hollow grouting anchor rod rotary head according to claim 1, 2 or 3, characterized in that the first circumferential rotating structure (51) comprises two tapered roller bearings (31) correspondingly arranged on the circumferential inner side of the first shaft sleeve (3), the rotary main shaft (5) is arranged in the tapered roller bearings (31) in a penetrating manner, and a round nut (32) and a round nut stop washer (33) which are abutted against the tapered roller bearings (31) are respectively arranged on the circumferential outer side of one end of the rotary main shaft (5) close to the front end output shaft; the second circumferential rotating structure (61) comprises two needle roller bearings (42) which are respectively arranged on the circumferential inner side of the second shaft sleeve (4), and the rotary drill rod (6) penetrates through the needle roller bearings (42).
5. The hollow grouting anchor rod rotary head according to claim 4, characterized in that a grease lubrication chamber (43) is formed on the circumferential inner side of the second shaft sleeve (4), the needle roller bearing (42) is positioned in the grease lubrication chamber (43), and a grease nipple (44) and a breathing cap (45) communicated with the grease lubrication chamber (43) are respectively arranged on the circumferential outer sides of the first shaft sleeve (3) and/or the second shaft sleeve (4).
6. A hollow grouting anchor rod rotary head according to claim 5, characterized in that the second collar (4) is provided with an annular groove (46) on the circumferential inner side, a slurry hole (65) communicated with a slurry channel (-63) is provided on the rotary shank (6), and the slurry cavity (62) is formed between the slurry hole (65) and the annular groove (46).
7. The hollow grouting anchor rod rotary head according to claim 6, characterized in that the circumferential inner side of the second shaft sleeve (4) is sequentially provided with a rotary GREEN ring (66) and a mud combined sealing ring (67) which are sleeved on the circumferential outer side of the rotary drill rod shank (6), and the rotary GREEN ring (66) and the mud combined sealing ring (67) are respectively positioned between the mud cavity (62) and the grease lubrication cavity (43).
8. The hollow grouting anchor rod rotary head according to claim 1, characterized in that the first dismounting structure (21) comprises a mounting plate (34) arranged at one end of the first sleeve (3), the mounting plate (34) is connected with a mounting concave table (23) on the support frame (2) through a first fastener (35); one end, close to the connector, of the second shaft sleeve (4) is sealed through an end cover (47), a dustproof ring (68) is arranged on the rotary drill rod shank (6) and the end cover (47), and framework oil seals (52) are respectively arranged between the end cover (47) and the second shaft sleeve (4) and between the first shaft sleeve (3) and the mounting concave table (23).
9. The hollow grouting anchor rod rotary head according to claim 8, characterized in that the second dismounting structure (41) comprises a fixing flange (36) arranged at one end of the first shaft sleeve (3) close to the second shaft sleeve (4), a matching flange (48) corresponding to the fixing flange (36) is arranged at one end of the second shaft sleeve (4), the fixing flange (36) and the matching flange (48) are connected through a second fastener (37), and O-rings (9) are respectively arranged between the fixing flange (36) and the matching flange (48), between the end cover (47) and the second shaft sleeve (4) and between the first shaft sleeve (3) and the mounting concave table (23).
10. The hollow grouting anchor rod rotary head according to claim 1, characterized in that one side of the propelling beam (1) is provided with an anchor rod bin (12), the anchor rod bin (12) is provided with a plurality of hollow anchor rods (81), one side of the end part of the propelling beam (1) is provided with a manipulator (13) corresponding to the anchor rod bin (12), and the propelling beam (1) is respectively provided with a propelling oil cylinder (14) and a pipe following wheel (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202011522731.4A CN112627870B (en) | 2020-12-21 | 2020-12-21 | Hollow grouting anchor rod rotary head |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011522731.4A CN112627870B (en) | 2020-12-21 | 2020-12-21 | Hollow grouting anchor rod rotary head |
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| CN112627870A CN112627870A (en) | 2021-04-09 |
| CN112627870B true CN112627870B (en) | 2022-04-01 |
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| CN202011522731.4A Active CN112627870B (en) | 2020-12-21 | 2020-12-21 | Hollow grouting anchor rod rotary head |
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| CN113530582A (en) * | 2021-06-04 | 2021-10-22 | 中铁工程装备集团隧道设备制造有限公司 | Anchor rod beam and anchor rod wrench |
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| CN211777522U (en) * | 2019-10-28 | 2020-10-27 | 鲁湖斌 | Take cement stock unit head of detachable connector |
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| CN112627870A (en) | 2021-04-09 |
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