CN113775364A

CN113775364A - Novel roof bolter

Info

Publication number: CN113775364A
Application number: CN202111077581.5A
Authority: CN
Inventors: 王超; 马伟杰; 吴立宏; 吴岳
Original assignee: Tongling Chemical Group Xinqiao Mining Co ltd
Current assignee: Tongling Chemical Group Xinqiao Mining Co ltd
Priority date: 2021-09-15
Filing date: 2021-09-15
Publication date: 2021-12-10
Anticipated expiration: 2041-09-15
Also published as: CN113775364B

Abstract

The invention relates to the field of construction engineering related equipment, in particular to a novel anchor rod machine, which comprises an air cylinder and a bearing, wherein the middle part of the bottom end of the air cylinder is provided with a conical supporting leg, the top end of the air cylinder is fixedly connected with a top seat, the front end of the top seat is provided with an operating arm assembly, the top end of the top seat is fixedly connected with an installation seat, the top end of the installation seat is provided with an installation cavity, the left side and the right side of the installation seat are respectively and rotatably connected with a linkage shaft through two groups of bearings, the middle part of the linkage shaft is fixedly connected with a driven helical gear, the lower end of the driven helical gear is meshed with a driving helical gear, the bottom end of the driving helical gear is fixedly connected with the output end of a driving motor, the driving motor is fixedly arranged at the middle part of the bottom end of the installation cavity, the left side and the right side of the outer wall of the linkage shaft are symmetrically provided with two groups of pin grooves, the pin blocks are slidably connected with a linkage gear, the invention provides a novel anchor rod machine which can enable a drill bit to realize positive and negative rotation and has high transmission efficiency.

Description

Novel roof bolter

Technical Field

The invention relates to the field of construction engineering related equipment, in particular to a novel anchor rod machine.

Background

The anchor rod machine is also called soil nailing machine, is a pneumatic impacting machine, and is mainly used for rock-soil anchor rods, roadbed and side slope treatment, underground deep foundation pit support and block, tunnel surrounding rock stabilization, landslide prevention and other disaster improvement, underground engineering support and high-rise building foundation treatment. It is also suitable for the non-prestressed anchor rod support of deep foundation pit spray protection and slope soil nail engineering.

Most of the bolting machines are pneumatic left-handed or right-handed bolting machines, the underground resin bolting machine is of a left-handed or right-handed type, so that mistakes are easy to purchase, construction cannot be realized, and meanwhile, the pneumatic transmission efficiency is not very high.

Aiming at the problems, the invention designs a novel roof bolter.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a novel roof bolter. The problem is solved as far as possible to provide a novel anchor rod machine which can enable the drill bit to realize positive and negative rotation and has high transmission efficiency.

The invention is realized by the following technical scheme:

a novel anchor rod machine comprises a cylinder and bearings, wherein a conical supporting leg is arranged in the middle of the bottom end of the cylinder, a top seat is fixedly connected to the top end of the cylinder, an operating arm assembly is arranged at the front end of the top seat, a mounting seat is fixedly connected to the top end of the top seat, a mounting cavity is formed in the top end of the mounting seat, linkage shafts are respectively and rotatably connected to the left side and the right side of the mounting seat through two groups of bearings, a driven helical gear is fixedly connected to the middle of the linkage shafts, a driving helical gear is meshed with the lower end gear of the driven helical gear, the bottom end of the driving helical gear is fixedly connected with the output end of a driving motor, the driving motor is fixedly mounted in the middle of the bottom end of the mounting cavity, two groups of pin grooves are symmetrically formed in the left side and the right side of the outer wall of the linkage shafts, pin blocks are slidably connected to the pin grooves, linkage gears are fixedly connected to the linkage gears, and the left side ends of the two groups of linkage gears are clamped and slidably connected to C-type adjusting shifting pieces, c type is adjusted plectrum left end fixedly connected with and is adjusted the slide bar, adjust slide bar left end fixedly connected with finger ring, adjust the left and right sides of slide bar sliding connection at the mount pad, mount pad top fixedly connected with top cap, the top cap middle part is rotated and is connected with the axis of rotation, the axis of rotation bottom end fixedly connected with driven gear, driven gear meshes with arbitrary a set of linkage gear mutually, axis of rotation top fixedly connected with drill bit seat, the drill bit seat top is pegged graft and is had the hexagonal plug, hexagonal plug top fixedly connected with drill bit, drill bit seat right-hand member is provided with the locking knob.

Preferably, still include first articulated shaft, the bottom support has been cup jointed at the landing leg middle part, the symmetry is provided with two sets of linking bridge around the left side of bottom support top, and two sets of linking bridge articulate through first articulated shaft has the triangle connecting block, triangle connecting block top fixedly connected with extension rod, extension rod top fixedly connected with triangle handle.

Preferably, the operation arm assembly contains articulated support, second articulated shaft, connecting block, linking arm, manifold block, xarm, arm cover, intake pipe, suction nozzle, connecting pipe and connector nozzle, articulated support fixed connection is in footstock front end lower part, articulated support articulates through the second articulated shaft has the connecting block, connecting block bottom fixedly connected with linking arm, the manifold block sets up in the linking arm bottom, the xarm is provided with two sets of and symmetry fixed mounting in the manifold block left and right sides, the cover has the arm cover on the xarm, the connecting block left side is connected with intake pipe one end, the intake pipe other end is connected with the suction nozzle, articulated support left side top middle part is connected with connecting pipe one end, the connecting pipe other end is connected on the footstock through the connector nozzle.

Preferably, the integrated electrical control component that is provided with on the integrated package, the inside first air flue that is equipped with of connecting block, the inside second air flue that is equipped with of second articulated shaft, the inside third air flue that is equipped with in articulated support left side, first air flue, second air flue and third air flue are linked together in proper order, the air inlet at first air flue is connected to the intake pipe upper end, the third air flue gas outlet is connected to the connecting pipe lower extreme, the inside business turn over air flue that is linked together with the cylinder top that is equipped with of footstock, the air inlet at business turn over air flue is connected to the connecting mouth.

Preferably, the left side and the right side of the mounting seat are respectively provided with two groups of through mounting holes, the bearing outer ring is fixedly connected to the inner wall of the mounting hole, and the bearing inner ring is fixedly connected to the outer walls of the left side and the right side of the universal driving shaft.

Preferably, the driving motor is electrically connected with a power supply.

Preferably, when the two sets of linkage gears synchronously move to the leftmost end, the linkage gear teeth and the gears on the left side are meshed with the driven gear, and when the two sets of linkage gears synchronously move to the rightmost end, the linkage gear teeth and the gears on the right side are meshed with the driven gear.

Preferably, two sets of rectangular holes are symmetrically formed in the left side and the right side of the top seat, and two sides of the adjusting slide rod are respectively connected in the rectangular holes in a sliding mode.

Preferably, a hexagonal slot is formed in the top end of the drill bit seat, the hexagonal plug is inserted into the hexagonal slot, a threaded hole is formed in the right end of the drill bit seat, and the locking knob is in threaded connection with the threaded hole and is in pressing contact with one side of the outer wall of the hexagonal plug.

Preferably, the top end of the top cover is fixedly provided with a material receiving funnel.

The invention has the beneficial effects that: through the rotation of the driving motor drive helical gear that sets up and then drive driven helical gear and rotate, driven helical gear drives the universal driving shaft and rotates, through the universal driving shaft on the left and right sides arbitrary a set of and driven gear mesh in two sets of linkage gears that set up respectively, make driven gear realize corotation or reversal as required, meanwhile, only need to adjust the plectrum through the C type in the time of the regulation and drive two sets of linkage gears synchronous slip, make in two sets of linkage gears with corotation or reversal corresponding a set of linkage gear with driven gear mesh can, whole device passes through gear drive simultaneously and will compare better with start-up driven efficiency, drilling effect is better.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a bottom perspective view of the present invention;

FIG. 3 is a transverse longitudinal section of the present invention;

FIG. 4 is a longitudinal cross-sectional view of the present invention;

fig. 5 is a cross-sectional view of the present invention at the C-shaped adjustment paddle.

In the figure: 1-cylinder, 2-conical leg, 3-bottom support, 4-connecting bracket, 5-first articulated shaft, 6-triangular connecting block, 7-extension rod, 8-triangular handle, 9-top seat, 901-air inlet and outlet channel, 10-articulated bracket, 11-second articulated shaft, 12-connecting block, 13-connecting arm, 14-manifold, 15-cross arm, 16-arm sleeve, 17-air inlet pipe, 18-air inlet nozzle, 19-connecting pipe, 20-connecting nozzle, 21-mounting seat, 22-bearing, 23-linkage shaft, 2301-pin slot, 24-driven bevel gear, 25-driving bevel gear, 26-driving motor, 27-linkage gear, 28-C type adjusting dial plate, 29-adjusting sliding rod, 30-a finger ring, 31-a top cover, 32-a rotating shaft, 33-a driven gear, 34-a drill bit seat, 35-a hexagonal plug, 36-a drill bit, 37-a locking knob and 38-a material receiving funnel.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1 to 5, a novel anchor rod machine comprises a cylinder 1 and bearings 22, wherein a tapered leg 2 is arranged in the middle of the bottom end of the cylinder 1, a top seat 9 is fixedly connected to the top end of the cylinder 1, an operating arm assembly is arranged at the front end of the top seat 9, a mounting seat 21 is fixedly connected to the top end of the top seat 9, a mounting cavity is formed in the top end of the mounting seat 21, a linkage shaft 23 is rotatably connected to the left and right sides of the mounting seat 21 through two sets of bearings 22, a driven helical gear 24 is fixedly connected to the middle of the linkage shaft 23, a driving helical gear 25 is engaged with a lower end gear of the driven helical gear 24, an output end of a driving motor 26 is fixedly connected to the bottom end of the driving helical gear 25, the driving motor 26 is fixedly mounted in the middle of the bottom end of the mounting cavity, two sets of pin grooves 2301 are symmetrically formed in the left and right sides of the outer wall of the linkage shaft 23, a pin block is slidably connected to a linkage gear 27, a C-shaped adjusting shifting plate 28 is clamped and slidably connected to the left side end of the two sets of the linkage gear 27, c type adjustment plectrum 28 left end fixedly connected with adjusts slide bar 29, adjust slide bar 29 left end fixedly connected with and point out ring 30, adjust slide bar 29 sliding connection in the left and right sides of mount pad 21, mount pad 21 top fixedly connected with top cap 31, top cap 31 middle part is rotated and is connected with axis of rotation 32, axis of rotation 32 bottom fixedly connected with driven gear 33, driven gear 33 meshes with arbitrary a set of linkage gear 27 mutually, axis of rotation 32 top fixedly connected with drill bit seat 34, it has hexagonal plug 35 to peg graft on the drill bit seat 34 top, hexagonal plug 35 top fixedly connected with drill bit 36, drill bit seat 34 right-hand member is provided with locking knob 37.

Please refer to fig. 1-2, still include first articulated shaft 5, bottom support 3 has been cup jointed at 2 middle parts of toper landing leg, bottom support 3 top left side front and back symmetry is provided with two sets of linking bridge 4, two sets of linking bridge 4 have a triangle connecting block 6 through the articulated triangle connecting block 6 that has of first articulated shaft 5, 6 top fixedly connected with extension rod 7 of triangle connecting block, extension rod 7 top fixedly connected with triangle handle 8, use with 3 cooperations of bottom support through the toper landing leg 2 that sets up and can make stable the fixing subaerial of whole device, the triangle handle that sets up uses the whole device of removal that can be fine with extension rod and the cooperation of triangle connecting block 6.

Referring to fig. 1, the operation arm assembly includes a hinge bracket 10, a second hinge shaft 11, a connecting block 12, a connecting arm 13, a manifold block 14, a cross arm 15, an arm sleeve 16, an air inlet pipe 17, air inlet nozzles 18, connecting pipes 19 and connecting nozzles 20, the hinge bracket 10 is fixedly connected to the lower portion of the front end of the top seat 9, the hinge bracket 10 is hinged to the connecting block 12 through the second hinge shaft 11, the connecting arm 13 is fixedly connected to the bottom end of the connecting block 12, the manifold block 14 is disposed at the bottom end of the connecting arm 13, the cross arm 15 is provided with two sets of symmetrical and fixed on the left and right sides of the manifold block 14, the arm sleeve 16 is sleeved on the cross arm 15, one end of the air inlet pipe 17 is connected to the left side of the connecting block 12, the other end of the air inlet pipe 17 is connected to the air inlet nozzle 18, one end of the connecting pipe 19 is connected to the middle portion of the top end of the left side of the hinge bracket 10, the other end of the connecting pipe 19 is connected to the top seat 9 through the connecting nozzles 20, the operation arm assembly can well control the whole device, the device has good stability in drilling, and meanwhile, operation of operators is also avoided.

The integrated electrical control component that is provided with on the integrated package 14, connecting block 12 is inside to be equipped with first air flue, the inside second air flue that is equipped with of second articulated shaft 11, the inside third air flue that is equipped with in articulated support 10 left side, first air flue, second air flue and third air flue are linked together in proper order, intake pipe 17 upper end is connected at first air flue air inlet, 19 lower extremes of connecting pipe are connected at third air flue gas outlet, footstock 9 is inside to be equipped with the business turn over air flue 901 that is linked together with 1 top of cylinder, the air inlet at business turn over air flue 901 is connected to connecting mouth 20, make intake pipe 17 switch-on can make cylinder 1 stretch out and draw back as required after the air pump.

Two sets of through mounting holes are respectively arranged on the left side and the right side of the mounting seat 21, the outer ring of the bearing 22 is fixedly connected on the inner wall of the mounting hole, and the inner ring of the bearing 22 is fixedly connected on the outer walls of the left side and the right side of the universal driving shaft 23.

The driving motor 26 is electrically connected with a power supply, and the whole device can realize a drilling function through the arranged driving motor 26.

Referring to fig. 3 to 5, when the two sets of linkage gears 27 synchronously move to the leftmost end, the left linkage gear 27 is engaged with the driven gear 33, and when the two sets of linkage gears 27 synchronously move to the rightmost end, the right linkage gear 27 is engaged with the driven gear 33, and the two sets of sliding linkage gears 27 can realize the forward rotation or the reverse rotation of the driven gear 33, so that the drill bit 36 can realize the forward rotation or the reverse rotation.

The symmetry of footstock 9 left and right sides is equipped with two sets of rectangular holes that run through, adjusts slide bar 29 both sides difference sliding connection in this rectangular hole, through adjusting slide bar 29 sliding connection in this rectangular hole, makes the device can adjust the position of slide bar 29 as required, and then adjusts two sets of C type and adjusts plectrum 28 and drive two sets of linkage gears 27 synchronous displacement, the just reversal of adjusting device drilling.

Referring to fig. 3, a hexagonal socket is formed at the top end of the drill seat 34, a hexagonal plug 35 is inserted into the hexagonal socket, a threaded hole is formed at the right end of the drill seat 34, a locking knob 37 is in threaded connection with the threaded hole and is in pressing contact with one side of the outer wall of the hexagonal plug 35, the drill 36 can be well fixed through the arranged locking knob 37, and the stability of the device is improved.

Referring to fig. 1, a material receiving funnel 38 is fixedly installed at the top end of the top cover 31, and dust and debris generated in the drilling process can be well collected through the material receiving funnel 38.

In the invention, when the device is required to be used, the whole device is moved into a mine tunnel, the device is pulled by a triangular handle 8 when in movement, after the device is moved to a corresponding position, a conical supporting leg 2 is inserted into the ground, a bottom support 3 is flush with the ground, then the output end of an air pump is connected to an air inlet nozzle 18, a downhole resin anchor rod drill bit is inserted into a drill bit seat 34, the downhole resin anchor rod drill bit is fixed by screwing a locking knob 37, then according to the forward and reverse rotation mode of a forward and reverse rotation type adjusting device of the downhole resin anchor rod drill bit, the adjustment is carried out by only using fingers to pull a finger ring 30 and pull an adjusting slide rod 29 to slide to the left side or the right side corresponding to the forward and reverse rotation along a rectangular hole, because the middle part of a linkage shaft 23 is fixedly connected with a driven bevel gear 24, and a driving bevel gear 25 is meshed with a gear at the lower end of the driven bevel gear 24, the bottom end of the driving bevel gear 25 is fixedly connected with the output end of a driving motor 26, the driving motor 26 is fixedly installed in the middle of the bottom end of the installation cavity, two groups of pin grooves 2301 are symmetrically arranged on the left side and the right side of the outer wall of the linkage shaft 23, pin blocks are connected in the pin grooves 2301 in a sliding manner, linkage gears 27 are fixedly connected on the pin blocks, the left side ends of the two groups of linkage gears 27 are connected with a C-shaped adjusting shifting sheet 28 in a clamping manner and in a sliding manner, an adjusting slide rod 29 is fixedly connected with the left end of the C-shaped adjusting shifting sheet 28, when the two groups of linkage gears 27 synchronously move to the leftmost end, the left linkage gear 27 is meshed with the driven gear 33, when the two groups of linkage gears 27 synchronously move to the rightmost end, the right linkage gear 27 is meshed with the driven gear 33, the forward rotation or reverse rotation of the driven gear 33 can be realized through the two groups of sliding linkage gears 27, after the adjustment is completed, the driving motor 26 is started, then an operator holds the arm sleeve 16 on the cross arm 15 with both hands, the triangle handle 8 of keeping flat is stepped on to both feet, because connecting block 12 is inside to be equipped with first air flue, the inside second air flue that is equipped with of second articulated shaft 11, the inside third air flue that is equipped with in articulated support 10 left side, first air flue, second air flue and third air flue are linked together in proper order, intake pipe 17 upper end is connected at first air flue air inlet, connecting pipe 19 lower extreme is connected at third air flue gas outlet, footstock 9 is inside to be equipped with the business turn over air flue 901 that is linked together with cylinder 1 top, connect the air inlet at business turn over air flue 901 at mouth 20, make intake pipe 17 switch-on air pump after can make cylinder 1 stretch out and draw back as required, whole device can realize the drilling process of complete resin stock in the pit like this, whole device has overcome driven pneumatic roofbolter forward rotation or derotation and to the harsh requirement of machine completely, the transmission efficiency and the work efficiency of device have also been improved simultaneously.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A novel bolter, its characterized in that: the device comprises an air cylinder (1) and a bearing (22), wherein a conical supporting leg (2) is arranged in the middle of the bottom end of the air cylinder (1), a top seat (9) is fixedly connected to the top end of the air cylinder (1), an operating arm assembly is arranged at the front end of the top seat (9), an installation seat (21) is fixedly connected to the top end of the top seat (9), an installation cavity is formed in the top end of the installation seat (21), the left side and the right side of the installation seat (21) are respectively and rotatably connected with a linkage shaft (23) through two groups of bearings (22), a driven helical gear (24) is fixedly connected to the middle of the linkage shaft (23), a driving helical gear (25) is meshed at the lower end of the driven helical gear (24), the output end of a driving motor (26) is fixedly connected to the bottom end of the driving helical gear (25), the driving motor (26) is fixedly installed in the middle of the bottom end of the installation cavity, two groups of pin grooves (2301) are symmetrically arranged on the left side and the right side of the outer wall of the linkage shaft (23), the novel adjustable drill bit is characterized in that a pin block is connected to the pin groove (2301) in a sliding manner, a linkage gear (27) is fixedly connected to the pin block, two groups of linkage gears (27) are connected to the left end in a clamping manner and are connected with a C-shaped adjusting shifting piece (28) in a sliding manner, the C-shaped adjusting shifting piece (28) is fixedly connected with an adjusting slide rod (29) in the left end, the adjusting slide rod (29) is fixedly connected with a finger ring (30) in the left end and the right end of a mounting seat (21) in a sliding manner, a top cover (31) is fixedly connected to the top end of the mounting seat (21), a rotating shaft (32) is rotatably connected to the middle of the top cover (31), a driven gear (33) is fixedly connected to the bottom end of the rotating shaft (32), the driven gear (33) is meshed with any group of linkage gears (27), a drill bit seat (34) is fixedly connected to the top end of the rotating shaft (32), and a hexagonal plug (35) is inserted into the top end of the drill bit seat (34), the hexagonal plug (35) top fixedly connected with drill bit (36), drill bit seat (34) right-hand member is provided with locking knob (37).

2. A new bolter as defined in claim 1, wherein: still include first articulated shaft (5), bottom support (3) have been cup jointed at toper landing leg (2) middle part, bottom support (3) top left side front and back symmetry is provided with two sets of linking bridge (4), and two sets of linking bridge (4) articulate through first articulated shaft (5) has triangle connecting block (6), triangle connecting block (6) top fixedly connected with extension rod (7), extension rod (7) top fixedly connected with triangle handle (8).

3. A new bolter as defined in claim 1, wherein: the operation arm assembly comprises a hinged support (10), a second hinged shaft (11), a connecting block (12), a connecting arm (13), a manifold block (14), a cross arm (15), an arm sleeve (16), an air inlet pipe (17), an air inlet nozzle (18), a connecting pipe (19) and a connecting nozzle (20), wherein the hinged support (10) is fixedly connected to the lower part of the front end of a top seat (9), the hinged support (10) is hinged to the connecting block (12) through the second hinged shaft (11), the bottom end of the connecting block (12) is fixedly connected with the connecting arm (13), the manifold block (14) is arranged at the bottom end of the connecting arm (13), the cross arm (15) is provided with two groups and symmetrically and fixedly installed on the left side and the right side of the manifold block (14), the arm sleeve (16) is sleeved on the cross arm (15), the left side of the connecting block (12) is connected with one end of the air inlet pipe (17), the other end of the air inlet pipe (17) is connected with the air inlet nozzle (18), articulated support (10) left side top middle part is connected with connecting pipe (19) one end, the connecting pipe (19) other end is connected on footstock (9) through connecting mouth (20).

4. A new bolter as defined in claim 3, wherein: the integrated air conditioner is characterized in that an electric control element is arranged on the integrated block (14) in an integrated mode, a first air passage is arranged inside the connecting block (12), a second air passage is arranged inside the second hinged shaft (11), a third air passage is arranged inside the left side of the hinged support (10), the first air passage, the second air passage and the third air passage are sequentially communicated, the upper end of the air inlet pipe (17) is connected to an air inlet of the first air passage, the lower end of the connecting pipe (19) is connected to an air outlet of the third air passage, an air inlet and outlet passage (901) communicated with the top end of the air cylinder (1) is arranged inside the top seat (9), and the connecting nozzle (20) is connected to an air inlet of the air inlet and outlet passage (901).

5. A new bolter as defined in claim 1, wherein: the left side and the right side of the mounting seat (21) are respectively provided with two sets of through mounting holes, the outer ring of the bearing (22) is fixedly connected to the inner wall of the mounting hole, and the inner ring of the bearing (22) is fixedly connected to the outer walls of the left side and the right side of the universal driving shaft (23).

6. A new bolter as defined in claim 1, wherein: the driving motor (26) is electrically connected with a power supply.

7. A new bolter as defined in claim 1, wherein: when the two groups of linkage gears (27) synchronously move to the leftmost end, the linkage gear (27) on the left side is meshed with the driven gear (33), and when the two groups of linkage gears (27) synchronously move to the rightmost end, the linkage gear (27) on the right side is meshed with the driven gear (33).

8. A new bolter as defined in claim 1, wherein: two groups of through rectangular holes are symmetrically formed in the left side and the right side of the top seat (9), and two sides of the adjusting slide rod (29) are respectively connected in the rectangular holes in a sliding mode.

9. A new bolter as defined in claim 1, wherein: the hexagonal socket is opened at drill bit seat (34) top, plug hexagonal (35) are pegged graft in this hexagonal socket, drill bit seat (34) right-hand member is equipped with the screw hole, locking knob (37) threaded connection this screw hole and compress tightly contact plug hexagonal (35) outer wall one side.

10. A new bolter as defined in claim 1, wherein: the top end of the top cover (31) is fixedly provided with a receiving funnel (38).