CN110439587B - Cutting part and heading machine - Google Patents

Cutting part and heading machine Download PDF

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Publication number
CN110439587B
CN110439587B CN201910845633.5A CN201910845633A CN110439587B CN 110439587 B CN110439587 B CN 110439587B CN 201910845633 A CN201910845633 A CN 201910845633A CN 110439587 B CN110439587 B CN 110439587B
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China
Prior art keywords
piece
cutting
main shaft
buffer
shake
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Active
Application number
CN201910845633.5A
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Chinese (zh)
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CN110439587A (en
Inventor
刘佳成
赵洪林
李楠楠
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Sany Heavy Equipment Co Ltd
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Sany Heavy Equipment Co Ltd
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Priority to CN201910845633.5A priority Critical patent/CN110439587B/en
Publication of CN110439587A publication Critical patent/CN110439587A/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1006—Making by using boring or cutting machines with rotary cutting tools
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
    • E21D9/00—Tunnels or galleries, with or without linings; Methods or apparatus for making thereof; Layout of tunnels or galleries
    • E21D9/10—Making by using boring or cutting machines
    • E21D9/1086—Drives or transmissions specially adapted therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/028—Gearboxes; Mounting gearing therein characterised by means for reducing vibration or noise
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H2057/02039—Gearboxes for particular applications
    • F16H2057/02069—Gearboxes for particular applications for industrial applications
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Abstract

The invention provides a cutting part and a heading machine, and relates to the technical field of construction machinery. The cutting part comprises a cutting main shaft, a transmission sleeve, a sealing piece, a buffer piece and a driving mechanism. The driving mechanism is positioned at one side of one end of the cutting main shaft and is connected with the side wall of the cutting main shaft. The buffer piece and the sealing piece are annular, the transmission sleeve, the buffer piece and the sealing piece are sequentially sleeved on the cutting main shaft along the axial direction of the cutting main shaft, and one side, deviating from the buffer piece, of the sealing piece is abutted with the driving mechanism. The buffer piece and the sealing piece are spaced, the buffer piece is abutted with one end, close to the sealing piece, of the transmission sleeve, and the buffer piece can support the transmission sleeve. The heading machine comprises the cutting part. The invention relieves the technical problems that a floating seal seat in a cutting part of a heading machine in the prior art is easy to bear axial dynamic load, and a driving mechanism on one side of the floating seal seat is impacted continuously, so that the cutting part cannot keep a normal running state.

Description

Cutting part and heading machine
Technical Field
The invention relates to the technical field of construction machinery, in particular to a cutting part and a heading machine.
Background
The heading machine is mechanical equipment for tunneling mine tunnels, engineering tunnels and urban underground engineering. The heading machine comprises a travelling mechanism, a working mechanism, a loading mechanism and a transferring mechanism, wherein a cutting part in the working mechanism continuously breaks rocks and conveys away the broken rocks along with the forward pushing of the travelling mechanism.
As shown in fig. 1, the cutting part of the conventional heading machine comprises a cutting arm 1' and a driving mechanism 2', wherein the cutting arm 1' comprises a conical hollow cutting head 10', a cutting main shaft 11', a sleeve 12' and a spline housing 13' with spline teeth arranged on the inner wall. The cutting spindle 11 'is sleeved in the cutting head 10', and one end of the cutting spindle 11 'is fixed to an inner wall of a tip of the cutting head 10' by a bolt. The spline housing 13' is fixed on the inner side wall at the tip end of the cutting head 10' and sleeved on the part of the cutting main shaft 11' provided with spline teeth, and the spline teeth on the inner wall of the spline housing 13' are meshed with the spline teeth on the cutting main shaft 11 '. The end of the cutting head 10' remote from the tip is in communication with the sleeve 12', the drive mechanism 2' extends into the cutting head 10' through the sleeve 12', and the drive mechanism 2' is connected to the side wall of the cutting spindle 11 '.
The side wall of the cutting spindle 11' is further sleeved with a floating seal seat 3', one side of the floating seal seat 3', which is away from the tip of the cutting head 10', is abutted with the driving mechanism 2', and one side of the floating seal seat 3', which is close to the tip of the cutting head 10', is abutted with one end of the spline housing 13', which is away from the tip of the cutting head 10 '. A sealing ring is arranged on one side of the floating sealing seat 3 'close to the driving mechanism 2', and is used for preventing dust from entering into the engagement between the spline housing 13 'and the cutting main shaft 11' from the connection between the driving mechanism 2 'and the cutting main shaft 11'. The side of the floating seal holder 3' near the spline housing 13' is used for supporting the spline housing 13'.
However, when the heading machine is doing drilling work, the cutting head 10' needs to continuously advance and retreat in the rock, at this time, the driving mechanism 2' drives the cutting spindle 11' to move along the axial direction, and the cutting head 10' is continuously subjected to the reaction force of the rock to bear large axial vibration due to the harder rock, and the axial vibration is transmitted to the spline housing 13'. Because the cutting main shaft 11' and the cutting head 10' are connected through bolts, the cutting main shaft 11' and the cutting head 10' are easy to loosen, and the spline housing 13' is not fixed on the cutting main shaft 11', the spline housing 13' is easy to axially displace on the cutting main shaft 11' due to axial vibration and continuously impact the floating seal seat 3' abutted with the spline housing, so that the floating seal seat 3' always bears axial dynamic load, the driving mechanism 2' on one side of the floating seal seat 3' is continuously impacted, the driving mechanism 2' is easy to damage, vibration and shaking of the cutting part are further increased, and the cutting part cannot keep a normal running state.
Disclosure of Invention
The invention aims to provide a cutting part and a heading machine, which are used for solving the technical problems that when the heading machine in the prior art performs drilling work, a floating seal seat in the cutting part of the heading machine always bears axial dynamic load, so that a driving mechanism on one side of the floating seal seat is continuously impacted, the driving mechanism is not only easy to damage, but also vibration and shaking of the cutting part are aggravated, and the cutting part cannot keep a normal running state.
The cutting part provided by the invention comprises a cutting main shaft, a transmission sleeve, a sealing piece, a buffer piece and a driving mechanism;
the driving mechanism is positioned at one side of one end of the cutting main shaft and is connected with the side wall of the cutting main shaft;
the buffer piece and the sealing piece are annular, the transmission sleeve, the buffer piece and the sealing piece are sequentially sleeved on the cutting main shaft along the axial direction of the cutting main shaft, and one side, deviating from the buffer piece, of the sealing piece is abutted with the driving mechanism;
the buffer piece and the sealing piece are spaced, the buffer piece is abutted with one end, close to the sealing piece, of the transmission sleeve, and the buffer piece can support the transmission sleeve.
Further, along the hoop of the buffer member, an annular first groove is formed in one side, abutting against the transmission sleeve, of the buffer member, a first sealing ring is installed in the first groove, and the first sealing ring can abut against the side wall of the first groove and the side wall of the transmission sleeve.
Further, the cutting part also comprises a water distribution assembly, and the water distribution assembly comprises an annular connecting part;
the connecting part is sleeved and fixed on the cutting main shaft, and is positioned between the buffer piece and the sealing piece; the connecting part is abutted with one side, close to the buffer part, of the sealing part;
along the axial direction of the cutting main shaft, a space exists between the buffer piece and the water distribution assembly.
Further, an annular blocking piece is arranged between the connecting part and the cutting main shaft, the blocking piece is sleeved and fixed on the cutting main shaft, and the connecting part is sleeved and fixed on the blocking piece.
Further, an annular avoiding groove is formed in the end face, close to the buffer piece, of the transmission sleeve, and the avoiding groove is formed in the hollow position of the transmission sleeve;
along the radial direction of the cutting main shaft, the radial distance between the surface of the avoidance groove, which is far away from the cutting main shaft, and the surface of the buffer piece, which is close to the cutting main shaft, is larger than the radial distance between the surface of the barrier piece, which is far away from the cutting main shaft, and the surface of the buffer piece, which is close to the cutting main shaft;
one side of the buffer piece, which is away from the blocking piece, is abutted with the end part of the transmission sleeve and is used for blocking the opening of the avoidance groove; one side of the buffer piece, which is close to the blocking piece, is abutted against the blocking piece, and a space exists between one side of the buffer piece, which is close to the blocking piece, and the connecting part;
the first recess is provided on a side of the buffer element facing away from the barrier element.
Further, along the annular direction of the buffer member, an annular second groove is formed in one surface, sleeved with the side wall of the cutting main shaft, of the buffer member, a second sealing ring is installed in the second groove, and the second sealing ring can be abutted with the side wall of the second groove and the side wall of the cutting main shaft.
Further, the cutting part further comprises a conical and hollow cutting head, a plurality of first anti-shake pieces and a plurality of second anti-shake pieces;
the transmission sleeve is sleeved in the cutting head, and the outer wall of the transmission sleeve is fixed on the inner wall of the cutting head; one end of the cutting main shaft, which is far away from the sealing piece, is fixed on the inner wall of the tip end of the cutting head;
the first anti-shaking pieces are arranged on the side wall of the cutting main shaft at intervals along the axial direction of the cutting main shaft; the plurality of second anti-shaking pieces are arranged on the inner wall of the transmission sleeve at intervals along the axial direction of the transmission sleeve;
the first anti-shaking pieces and the second anti-shaking pieces are arranged in one-to-one correspondence, and can be mutually abutted in the axial direction of the cutting main shaft.
Further, the first anti-shake piece is an annular groove, the second anti-shake piece is an annular bulge, and the second anti-shake piece is positioned in the first anti-shake piece; or, the first anti-shake piece is an annular bulge, the second anti-shake piece is an annular groove, and the first anti-shake piece is positioned in the second anti-shake piece.
Further, the first anti-shake piece and the second anti-shake piece are two;
one of the second anti-shake pieces is arranged on the inner side wall of one end of the transmission sleeve, and the other of the first anti-shake pieces is arranged on the cutting main shaft at a position corresponding to the other of the second anti-shake pieces;
the other second anti-shake piece is arranged on the inner side wall of the other end of the transmission sleeve, and the other first anti-shake piece is arranged on the cutting main shaft at a position corresponding to the other second anti-shake piece.
The heading machine provided by the invention comprises the cutting part.
The cutting part and the heading machine provided by the invention have the following beneficial effects:
the cutting part provided by the invention comprises a cutting main shaft, a transmission sleeve, a sealing piece, a buffer piece and a driving mechanism. The driving mechanism is positioned at one side of one end of the cutting main shaft and is connected with the side wall of the cutting main shaft. Along the axial of cutting main shaft, drive sleeve, bolster and sealing member cup joint in proper order on the cutting main shaft, and the one side that deviates from the bolster of sealing member and actuating mechanism butt. The buffer piece is in butt joint with one end of the transmission sleeve, which is close to the sealing piece, and a space exists between the buffer piece and the sealing piece. The cutting spindle in the invention is the cutting spindle in the existing cutting part, the transmission sleeve in the invention can be a spline sleeve in the existing cutting part, and the sealing element in the invention can be a floating sealing seat in the existing cutting part. When the heading machine is in drilling work, the driving mechanism drives the cutting main shaft to move along the axial direction of the cutting main shaft, so that the cutting main shaft drives a conical cutting head fixedly connected with the transmission sleeve and enclosed outside the transmission sleeve to continuously advance and retreat in rock. At this time, the cutting head is subjected to axial vibration by continuously receiving the reaction force of the rock, and the axial vibration is transmitted to a transmission sleeve fixed on the inner side wall of the cutting head. Because the transmission sleeve is not fixed on the cutting main shaft and the cutting main shaft is connected with the cutting head through a bolt which is easy to loosen, the transmission sleeve can displace on the cutting main shaft along the axial direction of the cutting main shaft due to the axial vibration. In the cutting part provided by the invention, a space exists between the buffer member and the sealing member, and the buffer member can support the transmission sleeve, so that the transmission sleeve can transmit axial vibration to the buffer plate, and the axial vibration can not be continuously transmitted to the sealing member and the driving mechanism through the space.
Therefore, when the development machine is in drilling work, after the transmission sleeve of the cutting part provided by the invention is subjected to axial vibration, the axial vibration received by the transmission sleeve is not continuously transmitted to the sealing element and the driving mechanism due to the action of the interval and the buffer plate, so that the driving mechanism is not damaged, the vibration and the shaking received by the cutting part are not aggravated, the cutting part can be kept in a normal running state, and the stability of the cutting part is improved.
The development machine provided by the invention comprises the cutting part, so that the development machine provided by the invention has the same beneficial effects as the cutting part.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present invention, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a conventional cutting part;
fig. 2 is a schematic structural diagram of a cutting portion according to a first embodiment of the present invention;
FIG. 3 is an enlarged schematic view of portion A in FIG. 2;
FIG. 4 is a schematic view of the buffer of FIG. 2;
FIG. 5 is a schematic view of the damper of FIG. 2 in position change under the action of axial vibration;
fig. 6 is a schematic view of the cutting spindle and the driving sleeve of fig. 2.
Icon: a 1' -cutting arm; 10' -cutting head; 11' -cutting spindle; 12' -sleeve; 13' -spline housing; a 2' -drive mechanism; 3' -floating seal holder; 1-a cutting spindle; 10-a first anti-shake member; 2-a transmission sleeve; 20-avoiding grooves; 21-a second anti-shake member; 3-seals; 4-cushioning member; 40-a first groove; 400-a first sealing ring; 41-a second groove; 410-a second sealing ring; 5-a driving mechanism; 6-interval; 7-a connection; 8-a barrier; 9-a cutting head; 90-protecting cylinder.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Embodiment one:
as shown in fig. 2 and 3, the cutting part provided by the present embodiment includes a cutting spindle 1, a transmission sleeve 2, a sealing member 3, a buffer member 4, and a driving mechanism 5. The driving mechanism 5 is located at one side of one end of the cutting spindle 1 and is connected to a side wall of the cutting spindle 1. The buffer piece 4 and the sealing piece 3 are annular, the transmission sleeve 2, the buffer piece 4 and the sealing piece 3 are sequentially sleeved on the cutting main shaft 1 along the axial direction of the cutting main shaft 1, and one side, deviating from the buffer piece 4, of the sealing piece 3 is abutted with the driving mechanism 5. There is a space 6 between the buffer 4 and the sealing member 3, and the buffer 4 is abutted with one end of the driving sleeve 2 close to the sealing member 3, and the buffer 4 can support the driving sleeve 2.
The cutting spindle 1 is the cutting spindle 1 in the existing cutting part, the driving sleeve 2 in the embodiment may be a spline sleeve in the existing cutting part, and the sealing member 3 in the embodiment may be a floating sealing seat in the existing cutting part. When the heading machine is in drilling work, the driving mechanism 5 drives the cutting main shaft 1 to move along the axial direction of the cutting main shaft, so that the cutting main shaft 1 drives the conical cutting head 9 fixedly connected with the transmission sleeve 2 and enclosed outside the transmission sleeve 2 to continuously advance and retreat in the rock. At this time, the cutting head 9 is continuously subjected to the reaction force of the rock and is subjected to a plurality of directions of dynamic loads, wherein the axial dynamic loads are mainly the dynamic loads, that is, the cutting head 9 is subjected to large axial vibration. The cutting head 9 will then transmit this axial vibration to the driving sleeve 2 fixed to the inner side wall of the cutting head 9.
However, since the transmission sleeve 2 is not fixed to the cutting spindle 1 and the cutting spindle 1 is fixed to the cutting head 9 by a bolt connection which is easily loosened, the transmission sleeve 2 is displaced on the cutting spindle 1 in the axial direction of the cutting spindle 1 due to the above-mentioned axial vibration. In the cutting part provided in this embodiment, a space 6 exists between the buffer member 4 and the sealing member 3, and the buffer member 4 can support the driving sleeve 2, so that the driving sleeve 2 will transmit axial vibration to the buffer plate, but will not continue to transmit axial vibration to the sealing member 3 and the driving mechanism 5 through the space 6.
Therefore, when the development machine is doing drilling work, after the transmission sleeve 2 in the cutting part provided by the embodiment receives axial vibration, the axial vibration received by the transmission sleeve is not continuously transmitted to the sealing element 3 and the driving mechanism 5 due to the action of the interval 6 and the buffer plate, so that the driving mechanism 5 is not damaged, the vibration and the shaking received by the cutting part are not aggravated, the cutting part can be kept in a normal running state, and the stability of the cutting part is improved.
It can be seen that the cutting part provided in this embodiment relieves the technical problem that when the heading machine in the prior art is doing drilling work, the floating seal seat in the cutting part of the heading machine always bears axial dynamic load, so that the driving mechanism 5 on one side of the floating seal seat is continuously impacted, and not only is the driving mechanism 5 damaged, but also the vibration and the shaking suffered by the cutting part are aggravated, so that the cutting part cannot maintain the normal running state.
The buffer 4 can be fastened to the cutting spindle 1 by means of a screw or can be interference fit to the cutting spindle 1. The gap 6 between the buffer element 4 and the sealing element 3 should be large enough to prevent the transmission sleeve 2 from pushing the buffer element 4 and thus the buffer element 4 from abutting the sealing element 3.
Further, as shown in fig. 2, 3 and 4, along the circumferential direction of the buffer member 4, an annular first groove 40 is provided on the side of the buffer member 4 abutting against the transmission sleeve 2, and a first sealing ring 400 is installed in the first groove 40, and the first sealing ring 400 can abut against the side wall of the first groove 40 and the side wall of the transmission sleeve 2.
Wherein, first sealing washer 400 can be rubber circle or silica gel circle, and first sealing washer 400 is used for sealing the gap of bolster 4 and transmission cover 2 butt department, prevents that the dust from entering into the above-mentioned groove 20 of dodging of transmission cover 2 from the gap between bolster 4 and the transmission cover 2, and then can prevent that the dust from entering into the hookup location department between transmission cover 2 and cutting main shaft 1, prevents to influence cutting main shaft 1 and drives the process that transmission cover 2 rotated.
As shown in fig. 2 and 3, the cutting part further comprises a water distribution assembly, the water distribution assembly comprises an annular connecting part 7, the connecting part 7 is sleeved and fixed on the cutting main shaft 1, and the connecting part 7 is positioned between the buffer part 4 and the sealing part 3. The connecting portion 7 abuts on a side of the seal 3 close to the cushion 4. Along the axial direction of the cutting spindle 1, a gap 6 is present between the buffer 4 and the water distribution assembly.
Wherein, the non-connecting part 7 of the water distribution assembly is connected with the driving mechanism 5 through bolts, and the water distribution assembly is used for supplying water to the driving mechanism 5 and the cutting main shaft 1 so as to reduce the temperature of the driving mechanism 5 and the cutting main shaft 1.
When the cutting part comprises a water distribution assembly, a space 6 between the buffer member 4 and the seal member 3 may be provided between the buffer member 4 and the water distribution assembly, since the connecting part 7 of the water distribution assembly abuts on a side of the seal member 3 close to the buffer member 4. The buffer element 4 is used for supporting the driving sleeve 2, and the above-mentioned interval 6 is used for preventing the driving sleeve 2 from transmitting the larger axial vibration to the water distribution assembly, and then preventing the axial vibration from being transmitted to the sealing element 3.
Further, as shown in fig. 2 and 3, an annular blocking member 8 is disposed between the connecting portion 7 and the cutting spindle 1, the blocking member 8 is sleeved and fixed on the cutting spindle 1, and the connecting portion 7 is sleeved and fixed on the blocking member 8.
Wherein, the separation piece 8 can be current spacer bush, and separation piece 8 can be fixed on cutting main shaft 1 through parts such as screw or round pin axle, and separation piece 8's one side can be with sealing member 3 butt this moment, also has interval 6 between opposite side and the bolster 4, and this interval 6 is used for preventing that bolster 4 from transmitting the axial vibration that it received to separation piece 8, then prevents to transmit axial vibration to sealing member 3. The buffer 4 can then be fastened to the side wall of the cutting spindle 1 by means of a screw or interference fit.
In order to further improve the tightness and prevent dust from entering the joint between the driving sleeve 2 and the cutting spindle 1, as shown in fig. 2 and 3, a sealing ring for sealing is preferably provided between the blocking member 8 and the cutting spindle 1 in this embodiment.
In the present embodiment, as shown in fig. 2 and 3, an annular escape groove 20 is provided on the end face of the transmission sleeve 2 near the cushion member 4, and the escape groove 20 is provided at the hollow position of the transmission sleeve 2. The radial distance between the side of the relief groove 20 facing away from the cutting spindle 1 and the side of the buffer element 4 facing away from the cutting spindle 1 is greater than the radial distance between the side of the barrier element 8 facing away from the cutting spindle 1 and the side of the buffer element 4 facing away from the cutting spindle 1 in the radial direction of the cutting spindle 1. The side of the buffer element 4 facing away from the blocking element 8 is in abutment with the end of the transmission sleeve 2 and serves to close off the opening of the recess 20. One side of the buffer 4 close to the blocking member 8 abuts against the blocking member 8, and a space 6 exists between one side of the buffer 4 close to the blocking member 8 and the connecting portion 7. The first recess 40 is provided on the side of the buffer member 4 facing away from the barrier member 8.
Among them, in the existing cutting part and the cutting part provided in this embodiment, the hollow position of the end of the driving sleeve 2 near the sealing member 3 is provided with an avoidance groove 20, and the avoidance groove 20 is used for providing an avoidance space for a component installed on the cutting spindle 1 at a position corresponding to the end of the driving sleeve 2 near the sealing member 3. In the conventional cutting portion, the member capable of sealing the open end of the escape groove 20 is a floating seal seat abutting on the spline housing side, whereas in the present embodiment, the member capable of sealing the open end of the escape groove 20 is a buffer plate abutting on the transmission housing 2 side.
When the side of the buffer member 4 near the blocking member 8 abuts against the blocking member 8, the buffer member 4 is abutted between the blocking member 8 and the transmission case 2. When the cutting part drills in the rock, the cutting part receives axial dynamic load and radial dynamic load, so that the transmission sleeve 2 can vibrate along the axial direction of the cutting main shaft 1 and autorotate under the drive of the cutting main shaft 1. When the driving sleeve 2 transmits axial vibration to the buffer member 4 located behind it, the buffer member 4 is not uniformly stressed by the above-mentioned radial dynamic load, and the buffer member 4 may be slightly inclined on the cutting spindle 1, as shown in fig. 5. At this time, one of the upper and lower halves of the damper 4 is subjected to axial vibration, and the other portion is inclined as described above to generate a gap with the blocking member 8, and the axial vibration is not transmitted to the blocking member 8.
Meanwhile, as shown in fig. 2 and 3, since the side of the driving sleeve 2, which is close to the buffer member 4, is provided with the escape groove 20, and the radial distance between the side of the escape groove 20, which is far away from the cutting spindle 1, and the side of the buffer member 4, which is close to the cutting spindle 1, is greater than the radial distance between the side of the barrier member 8, which is far away from the cutting spindle 1, and the side of the buffer member 4, which is close to the cutting spindle 1, the axial vibration-receiving portion of the buffer member 4 is the position of the buffer member 4, which is in abutment with the driving sleeve 2, and the position of the buffer member 4, which corresponds to the escape groove 20, is not subjected to the axial vibration, as shown in fig. 2 and 3. Therefore, after the buffer member 4 receives axial vibration, the position where the buffer member 4 abuts against the transmission sleeve 2 moves towards the position of the interval 6 between the buffer member 4 and the water distribution assembly, and the position where the buffer member 4 corresponds to the avoidance groove 20 inclines towards one side of the avoidance groove 20, so that the buffer member 4 does not transmit the received axial vibration to the water distribution assembly and the blocking member 8.
As shown in fig. 2 and 3, along the circumferential direction of the buffer member 4, an annular second groove 41 is provided on one surface of the buffer member 4 sleeved with the side wall of the cutting spindle 1, and a second seal ring 410 is installed in the second groove 41, and the second seal ring 410 can be abutted with the side wall of the second groove 41 and the side wall of the cutting spindle 1.
The second sealing ring 410 may further improve the sealing performance, and the second sealing ring 410 is used for sealing the gap between the buffer member 4 and the side wall of the cutting spindle 1, so as to prevent dust from entering into the avoidance groove 20 after passing through the gap between the buffer member 4 and the side wall of the cutting spindle 1.
As shown in fig. 2, 3 and 6, the cutting part further comprises a tapered and hollow cutting head 9, a plurality of first anti-sloshing members 10 and a plurality of second anti-sloshing members 21. As shown in fig. 2 and 3, the driving sleeve 2 is sleeved in the cutting head 9, and the outer wall of the driving sleeve 2 is fixed on the inner wall of the cutting head 9, and one end of the cutting spindle 1, which is far away from the sealing element 3, is fixed on the inner wall of the tip of the cutting head 9. As shown in fig. 6, a plurality of first anti-sloshing members 10 are provided at intervals on the side wall of the cutting spindle 1 in the axial direction of the cutting spindle 1, and a plurality of second anti-sloshing members 21 are provided at intervals on the inner wall of the driving sleeve 2 in the axial direction of the driving sleeve 2. The first anti-shake member 10 and the second anti-shake member 21 are provided in one-to-one correspondence, and the first anti-shake member 10 and the second anti-shake member 21 can abut against each other in the axial direction of the cutting spindle 1.
The existing cutting part and the cutting part provided by the embodiment all comprise a protection cylinder 90, the protection cylinder 90 is of a hollow cylindrical structure, the cutting part provided by the embodiment further comprises a cylinder body, and the cylinder body is a sleeve in the existing cutting part. One end of the protection cylinder 90 is communicated with one end of the cutting head 9 far away from the tip of the cutting head 9, the other end of the protection cylinder 90 is communicated with one end of the cylinder body, and the cutting main shaft 1 is positioned at the hollow positions of the cutting head 9, the protection cylinder 90 and the cylinder body. The inner side wall of the transmission sleeve 2 is provided with a spline, the position of the cutting main shaft 1 corresponding to the transmission sleeve 2 is provided with a spline, and the spline on the transmission sleeve 2 is matched with the spline on the cutting main shaft 1, so that the cutting main shaft 1 can drive the transmission sleeve 2 to rotate together.
In the process of breaking rock by the heading machine, the cutting head 9 is required not only to advance or retreat in the rock but also to perform a rotary cutting work to break the rock by rotation. Thus during the breaking of rock by the heading machine the cutting head 9 needs to withstand dynamic loads including radial and axial dynamic loads. However, when the heading machine performs a rotary cutting operation, the cutting head 9 mainly receives a dynamic load mainly including a radial dynamic load. When the heading machine performs rotary cutting, the power mechanism drives the cutting main shaft 1 to rotate, and then spline fit between the transmission sleeve 2 and the cutting main shaft 1 is utilized to drive the transmission sleeve 2 to rotate, and the transmission sleeve 2 rotates and then drives the cutting head 9 to rotate.
However, with the conventional cutting part, when the heading machine performs a rotary cutting operation, that is, when the cutting head 9 mainly receives a radial dynamic load, since the tip of the cutting head 9 is at the maximum position of the stress, the cutting head 9 swings on the cutting spindle 1 with the tip thereof as the center of swing, resulting in a large swing amplitude of the end of the cutting head 9 away from the tip. At this time, a large abrasion is generated between the end of the cutting head 9 away from the tip and the end of the protection cylinder 90, so that the end of the cutting head 9 and the end of the protection cylinder 90 are damaged, and the rest of the cutting part is damaged.
In the cutting part provided in the present embodiment, the first anti-shake member 10 and the second anti-shake member 21 may abut against each other in the axial direction of the cutting spindle 1, and thus, when the cutting head 9 swings on the cutting spindle 1 with its tip as the center of swing, the transmission sleeve 2 fixed on the inner side wall of the cutting head 9 and the cutting spindle 1 may be prevented from moving relative to each other in the axial direction of the cutting spindle 1. Since the tip position of the cutting head 9 is unchanged when the cutting head 9 swings on the cutting spindle 1 with its tip as a swing center, a path along which one end of the cutting head 9, which is far from the tip, swings is arc-shaped, and thus the swinging process of the cutting head 9 includes not only movement in the radial direction of the cutting spindle 1 but also movement in the axial direction of the cutting spindle 1. The first anti-shaking member 10 and the second anti-shaking member 21 are matched with each other to prevent the transmission sleeve 2 and the cutting main shaft 1 from moving along the axial direction of the cutting main shaft 1, so that the first anti-shaking member 10 and the second anti-shaking member 21 can be used for limiting the swinging process of the cutting head 9, play a role in preventing abrasion between the end part of the cutting head 9 and the end part of the protection cylinder 90, and further improve the stability of the cutting part.
In this embodiment, as shown in fig. 6, the first anti-shake member 10 is an annular groove, the second anti-shake member 21 is an annular protrusion, and the second anti-shake member 21 is located in the first anti-shake member 10. Alternatively, the first anti-shake member 10 is an annular protrusion, the second anti-shake member 21 is an annular groove, and the first anti-shake member 10 is located in the second anti-shake member 21.
The second anti-shake member 21 may have a hollow cylindrical structure, and the shape of the first anti-shake member 10 corresponds to the shape of the second anti-shake member 21.
Further, to enhance the effect of the first anti-shake member 10 and the second anti-shake member 21 in restricting the swing of the cutting head 9, both the side wall of the second anti-shake member 21 facing the tip of the cutting head 9 and the side wall facing the driving mechanism 5 are perpendicular to the side wall of the second anti-shake member 21 opposite to the side wall of the cutting spindle 1.
The first anti-shake member 10 and the second anti-shake member 21 may be in interference fit, so that larger friction is generated between the second anti-shake member 21 and the first anti-shake member 10, and the effect of restricting the swinging of the cutting head 9 of the first anti-shake member 10 and the second anti-shake member 21 is further improved.
In this embodiment, as shown in fig. 6, the first anti-shake member 10 and the second anti-shake member 21 are two, wherein one second anti-shake member 21 is disposed on the inner sidewall of one end of the transmission sleeve 2, and one first anti-shake member 10 is disposed on the cutting spindle 1 at a position corresponding to one second anti-shake member 21. The other second anti-sloshing member 21 is provided on the inner sidewall of the other end of the driving housing 2, and the other first anti-sloshing member 10 is provided on the cutting spindle 1 at a position corresponding to the other second anti-sloshing member 21.
One of the second anti-shaking members 21 is arranged on the inner side wall of one end of the transmission sleeve 2, the other second anti-shaking member 21 is arranged on the inner side wall of the other end of the transmission sleeve 2, two limiting positions for preventing swinging can be arranged between the cutting main shaft 1 and the cutting head 9, and the two limiting positions are respectively positioned on two sides of the spline part of the cutting main shaft 1 and are respectively positioned on two sides of the spline part of the transmission sleeve 2. By limiting the number and positions of the two limiting positions, the effect of limiting the swing of the first anti-swing member 10 and the second anti-swing member 21 can be improved, and the stability of the cutting head 9 can be further improved.
In this embodiment, as shown in fig. 6, the first anti-sloshing member 10 located on the inner sidewall of one end of the driving sleeve 2 may be an annular protrusion, and the corresponding second anti-sloshing member 21 corresponding to the first anti-sloshing member 10 may be an annular groove. The first anti-sloshing member 10 located on the inner sidewall of the other end of the driving sleeve 2 may be an annular groove, and the corresponding second anti-sloshing member 21 to the first anti-sloshing member 10 may be an annular protrusion.
Embodiment two:
the heading machine provided by the embodiment comprises the cutting part in the first embodiment, so that the heading machine provided by the embodiment and the cutting part in the first embodiment can solve the same technical problems and achieve the same technical effects.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the 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 scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.

Claims (2)

1. A cutting part, which is characterized by comprising a cutting main shaft (1), a transmission sleeve (2), a sealing piece (3), a buffer piece (4) and a driving mechanism (5);
the driving mechanism (5) is positioned at one side of one end of the cutting main shaft (1) and is connected with the side wall of the cutting main shaft (1);
the buffer piece (4) and the sealing piece (3) are annular, the transmission sleeve (2), the buffer piece (4) and the sealing piece (3) are sequentially sleeved on the cutting main shaft (1) along the axial direction of the cutting main shaft (1), and one side, deviating from the buffer piece (4), of the sealing piece (3) is abutted with the driving mechanism (5);
a space (6) is reserved between the buffer piece (4) and the sealing piece (3), the buffer piece (4) is abutted with one end, close to the sealing piece (3), of the transmission sleeve (2), and the buffer piece (4) can support the transmission sleeve (2);
along the annular direction of the buffer piece (4), an annular first groove (40) is formed in one side, abutting against the transmission sleeve (2), of the buffer piece (4), a first sealing ring (400) is installed in the first groove (40), and the first sealing ring (400) can abut against the side wall of the first groove (40) and the side wall of the transmission sleeve (2);
the cutting part also comprises a water distribution assembly, and the water distribution assembly comprises an annular connecting part (7);
the connecting part (7) is sleeved and fixed on the cutting main shaft (1), and the connecting part (7) is positioned between the buffer piece (4) and the sealing piece (3); the connecting part (7) is abutted with one side, close to the buffer piece (4), of the sealing piece (3);
a space (6) is arranged between the buffer piece (4) and the water distribution assembly along the axial direction of the cutting main shaft (1);
an annular blocking piece (8) is arranged between the connecting part (7) and the cutting main shaft (1), the blocking piece (8) is sleeved and fixed on the cutting main shaft (1), and the connecting part (7) is sleeved and fixed on the blocking piece (8);
an annular avoidance groove (20) is formed in the end face, close to the buffer piece (4), of the transmission sleeve (2), and the avoidance groove (20) is formed in the hollow position of the transmission sleeve (2);
along the radial direction of the cutting spindle (1), the radial distance between the side of the avoidance groove (20) away from the cutting spindle (1) and the side of the buffer member (4) close to the cutting spindle (1) is larger than the radial distance between the side of the blocking member (8) away from the cutting spindle (1) and the side of the buffer member (4) close to the cutting spindle (1);
one side of the buffer piece (4) which is far away from the blocking piece (8) is abutted with the end part of the transmission sleeve (2) and is used for blocking the opening of the avoidance groove (20); one side of the buffer piece (4) close to the blocking piece (8) is abutted against the blocking piece (8), and a gap (6) exists between one side of the buffer piece (4) close to the blocking piece (8) and the connecting part (7);
the first recess (40) is arranged on the side of the buffer element (4) facing away from the blocking element (8);
along the annular direction of the buffer member (4), an annular second groove (41) is formed in one surface, sleeved with the side wall of the cutting main shaft (1), of the buffer member (4), a second sealing ring (410) is arranged in the second groove (41), and the second sealing ring (410) can be in butt joint with the side wall of the second groove (41) and the side wall of the cutting main shaft (1);
the cutting part also comprises a conical and hollow cutting head (9), a plurality of first anti-shake pieces (10) and a plurality of second anti-shake pieces (21);
the transmission sleeve (2) is sleeved in the cutting head (9), and the outer wall of the transmission sleeve (2) is fixed on the inner wall of the cutting head (9); one end of the cutting spindle (1) which is far away from the sealing piece (3) is fixed on the inner wall of the tip end of the cutting head (9);
a plurality of first anti-shake pieces (10) are arranged on the side wall of the cutting main shaft (1) at intervals along the axial direction of the cutting main shaft (1); a plurality of second anti-shake pieces (21) are arranged on the inner wall of the transmission sleeve (2) at intervals along the axial direction of the transmission sleeve (2);
the first anti-shake pieces (10) and the second anti-shake pieces (21) are arranged in a one-to-one correspondence manner, and the first anti-shake pieces (10) and the second anti-shake pieces (21) can mutually abut against each other in the axial direction of the cutting main shaft (1);
the first anti-shake piece (10) is an annular groove, the second anti-shake piece (21) is an annular bulge, and the second anti-shake piece (21) is positioned in the first anti-shake piece (10); or, the first anti-shake piece (10) is an annular bulge, the second anti-shake piece (21) is an annular groove, and the first anti-shake piece (10) is positioned in the second anti-shake piece (21);
the first anti-shake piece (10) and the second anti-shake piece (21) are two;
one of the second anti-shake pieces (21) is arranged on the inner side wall of one end of the transmission sleeve (2), and one of the first anti-shake pieces (10) is arranged on the cutting main shaft (1) at a position corresponding to one of the second anti-shake pieces (21);
the other second anti-shaking piece (21) is arranged on the inner side wall of the other end of the transmission sleeve (2), and the other first anti-shaking piece (10) is arranged at a position corresponding to the other second anti-shaking piece (21) on the cutting main shaft (1).
2. A heading machine comprising the cutting portion of claim 1.
CN201910845633.5A 2019-09-06 2019-09-06 Cutting part and heading machine Active CN110439587B (en)

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CN113969787B (en) * 2021-11-04 2024-03-12 中国煤炭科工集团太原研究院有限公司 Three-hole spline connected internal spraying longitudinal axis cantilever type heading machine cutting head and mechanism

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102926765A (en) * 2012-11-20 2013-02-13 三一重型装备有限公司 Cutting part anti-interference device and heading machine
JP2014237979A (en) * 2013-06-10 2014-12-18 鈴江 秀吉 Cave excavator
CN104405383A (en) * 2014-10-09 2015-03-11 三一重型装备有限公司 Heading machine and cutting arm
WO2015169160A1 (en) * 2014-05-09 2015-11-12 刘送永 Cutting unit for hard rock tunnelling machine
CN109098709A (en) * 2018-10-29 2018-12-28 三重型装备有限公司 Telescopic tunneling machine cutting head system and development machine
CN210422629U (en) * 2019-09-06 2020-04-28 三一重型装备有限公司 Cutting part and heading machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102926765A (en) * 2012-11-20 2013-02-13 三一重型装备有限公司 Cutting part anti-interference device and heading machine
JP2014237979A (en) * 2013-06-10 2014-12-18 鈴江 秀吉 Cave excavator
WO2015169160A1 (en) * 2014-05-09 2015-11-12 刘送永 Cutting unit for hard rock tunnelling machine
CN104405383A (en) * 2014-10-09 2015-03-11 三一重型装备有限公司 Heading machine and cutting arm
CN109098709A (en) * 2018-10-29 2018-12-28 三重型装备有限公司 Telescopic tunneling machine cutting head system and development machine
CN210422629U (en) * 2019-09-06 2020-04-28 三一重型装备有限公司 Cutting part and heading machine

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