CN112593968B - Normal pressure cutter head and locking anti-drop protection device thereof - Google Patents
Normal pressure cutter head and locking anti-drop protection device thereof Download PDFInfo
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- CN112593968B CN112593968B CN202011473153.XA CN202011473153A CN112593968B CN 112593968 B CN112593968 B CN 112593968B CN 202011473153 A CN202011473153 A CN 202011473153A CN 112593968 B CN112593968 B CN 112593968B
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- 239000011435 rock Substances 0.000 claims description 23
- 238000007789 sealing Methods 0.000 claims description 15
- 230000001012 protector Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000009412 basement excavation Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000002265 prevention Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000007790 scraping Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008331 Pinus X rigitaeda Nutrition 0.000 description 1
- 235000011613 Pinus brutia Nutrition 0.000 description 1
- 241000018646 Pinus brutia Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK 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
- E21D9/104—Cutting tool fixtures
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- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
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- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
Abstract
The invention discloses a normal pressure cutter head and an anti-loosening and anti-falling protection device thereof, wherein the anti-loosening and anti-falling protection device comprises an anti-loosening plate abutted against a cutter locking bolt, an anti-falling protection plate positioned on one side of the anti-loosening plate, which is far away from the cutter locking bolt, and an anti-loosening bolt arranged on the anti-loosening protection plate and abutted against the anti-loosening plate; the anti-falling protection plate is fixedly arranged on the knife cylinder. The anti-loosening and anti-falling protection device provided by the invention has the advantages that the anti-loosening protective plate is abutted to the cutter locking bolt, the cutter locking bolt is effectively prevented from loosening, the loosening degree of the cutter is reduced, meanwhile, the anti-loosening protective plate and the anti-loosening bolt are abutted to the anti-loosening plate, the stability of the anti-loosening plate is improved, the loosening degree of the cutter is further reduced, meanwhile, the anti-loosening protective plate is fixedly connected with the cutter barrel, even if the cutter locking bolt is loosened, the cutter locking bolt cannot fall off, larger accidents are avoided, and the running stability of the normal-pressure cutter head is effectively improved.
Description
Technical Field
The invention relates to the technical field of engineering of tunnel boring machines, in particular to an anti-loosening and anti-falling protection device. In addition, the invention also relates to a normal pressure cutterhead comprising the anti-loosening and anti-falling protection device.
Background
The normal pressure cutter head forms a mechanical support normal pressure cutter changing environment by expanding the internal space of the structure, can bear huge external water and soil pressure and ensure good air tightness performance, so that personnel can operate in the normal pressure environment inside the cutter head, and the risk of entering the bin under pressure is avoided.
For the gas tightness of guaranteeing the blade disc structure, ordinary pressure removable cutting tool need dispose gate and sealing device and be used for completely cutting off the muddy water storehouse high pressure area, therefore ordinary pressure removable cutting tool and mounting structure volume are great, when ordinary pressure blade disc faces the excavation of hard rock stratum, for improving broken rock efficiency, can increase whole dish cutter quantity through reducing the sword interval, reduce the broken rock square volume of single cutter, and then promote the broken rock performance of blade disc, nevertheless be subject to the restriction of ordinary pressure removable cutting tool structure volume, present conventional ordinary pressure blade disc design is difficult to carry out the knife interval and arranges. Meanwhile, when the cutter is excavated in a hard rock stratum, the cutter head vibrates greatly, and the cutter is easy to loosen and fall off, so that the rock breaking performance can be influenced, and the normal-pressure space is decompressed due to sealing failure, thereby causing major safety accidents. Therefore, how to arrange the ordinary pressure cutter disc and the small cutter at intervals, avoiding the cutter to loosen and fall off and improving the excavation capacity of the ordinary pressure cutter disc in the hard rock stratum is a difficult problem to be solved urgently at present.
At present, in the prior art, cutters can be arranged more closely by mainly optimizing the cutter structure, for example, adopting a similar rectangular normal pressure cutter changing device, a staggered high-low arrangement mode and the like, and a method for reducing the volume and utilizing a common working space is adopted, so that the cutter spacing is reduced, and the method is effective for cutter arrangement in a central area. However, for the front area, adjacent path cutters can be arranged on different spokes in a staggered mode, the installation space of the cutters is limited by the structure and is smaller than the central area, the cutter spacing is mainly adjusted through the cutter arrangement, the previous arrangement mainly adopts a mode that two cutters are arranged in a staggered mode, the blade spacing of a single cutter is twice as large as the blade spacing, so that in order to reduce the cutter spacing, the blade spacing of the single cutter needs to be smaller and is limited by the structure, the blade spacing can only be 180mm at present, the corresponding cutter spacing can only be arranged to 90mm at the minimum, in addition, the cutters in the prior art adopt single-shaft double blades, the bearing capacity of the cutters is limited, and the requirement of the arrangement of the blade spacing below 90mm cannot be met.
Meanwhile, in the prior art, risk protection is only carried out on the falling of the cutter, but the cutter is not prevented from falling from the source, and the requirement of the prior art development cannot be met.
Therefore, how to improve the stability of the normal-pressure replaceable cutter component in the cutter head and prevent loosening is a technical problem which needs to be solved by the technical personnel in the field at present.
Disclosure of Invention
The invention aims to provide an anti-loosening and anti-falling protection device which can effectively improve the stability of a cutter, is not easy to loosen and fall off and avoids serious accidents. The invention also aims to provide the normal pressure cutterhead comprising the anti-loosening and anti-falling protection device.
In order to achieve the purpose, the invention provides the following technical scheme:
a kind of anti-loose anti-drop protective device, apply to the removable cutter assembly of ordinary pressure with cutter, cutter locking bolt and knife cylinder, including the anti-loose plate abutting against said cutter locking bolt, lie in said anti-loose plate keep away from said cutter locking bolt side anti-drop protective plate and install on said anti-loose protective plate and with said anti-loose bolt that the anti-loose plate abuts; the anti-falling protection plate is fixedly arranged on the knife cylinder.
Preferably, the door lock further comprises a locking pin installed on the anti-falling protection plate, and the locking pin can be locked with the door.
Preferably, a sealing part arranged along the circumferential direction of the knife cylinder is arranged between the anti-falling protection plate and the knife cylinder.
Preferably, the anti-loosening device further comprises a bolt sleeve arranged on the outer periphery of the nut of the anti-loosening bolt, and the bolt sleeve is connected with the surface of the anti-loosening protection plate in a sealing mode.
Preferably, a jacking space is arranged between the bolt sleeve and the anti-falling protective plate.
Preferably, the anti-loosening device further comprises a bolt sleeve supporting cylinder detachably mounted on the anti-loosening protective plate, the bolt sleeve supporting cylinder is located on one side, away from the cutter, of the anti-loosening protective plate, a plurality of bolt sleeves are arranged in the bolt sleeve supporting cylinder, and each bolt sleeve corresponds to one anti-loosening bolt.
Preferably, the bolt sleeve supporting cylinder is connected with the anti-falling protective plate through a bolt.
The utility model provides a normal pressure blade disc, includes the blade disc main part, installs removable cutter unit of normal pressure and locking anti-drop protection device in the blade disc main part, locking anti-drop protection device is foretell locking anti-drop protection device.
Preferably, the atmospheric pressure replaceable cutter assembly comprises a double-edge cutter, and the distance between two cutting edges of the double-edge cutter is 210-270mm; the blade disc main part includes a plurality of alternate arrangement's knife case and sword roof beam, the removable cutter unit mount of ordinary pressure is in on the knife case, and each broken rock orbit that cutting edge formed when rotating in the twolip cutter on the knife case is followed the radial interval of blade disc main part does the third of two cutting edge intervals on the twolip cutter.
Preferably, the normal pressure replaceable cutter assembly is a normal pressure replaceable hob assembly, and the normal pressure replaceable hob assembly comprises a double-shaft double-edge hob.
The invention also provides a normal pressure cutter head which comprises the anti-loosening and anti-falling protection device.
The invention provides an anti-loosening and anti-falling protection device which is applied to a normal-pressure replaceable cutter assembly with a cutter, a cutter locking bolt and a cutter barrel and comprises an anti-loosening plate abutted against the cutter locking bolt, an anti-falling protection plate positioned on one side of the anti-loosening plate, which is far away from the cutter locking bolt, and an anti-loosening bolt which is arranged on the anti-loosening protection plate and abutted against the anti-loosening plate; the anti-falling protective plate is fixedly arranged on the knife cylinder. According to the anti-loosening and anti-falling protection device provided by the invention, the tool locking bolt is effectively prevented from being loosened through the abutting of the anti-falling plate on the tool locking bolt, the tool loosening degree is reduced, meanwhile, the anti-falling protection plate and the anti-falling bolt are utilized to abut on the anti-falling plate, the stability of the anti-falling plate is improved, the tool loosening degree is further reduced, meanwhile, the tool locking bolt cannot fall off even though being loosened by utilizing the fixed connection between the anti-falling protection plate and the tool cylinder, a larger accident is avoided, and the operation stability of a normal pressure cutter head is effectively improved.
The normal pressure cutterhead provided by the invention is provided with the anti-loosening and anti-falling protection device, and the anti-loosening and anti-falling protection device has the technical effects, so the normal pressure cutterhead provided with the anti-loosening and anti-falling protection device also has corresponding technical effects.
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 embodiments or the prior art descriptions will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic front structural view of an embodiment of a normal pressure cutter head provided by the invention;
fig. 2 is a schematic side structure diagram of a specific embodiment of a normal pressure cutter head provided by the present invention;
fig. 3 is a schematic view of an assembly structure of a normal pressure replaceable cutter assembly and an anti-loosening and anti-falling protection device in the normal pressure cutter head provided by the invention;
FIG. 4 is a schematic view of the assembly of the atmospheric replaceable tool assembly and the anti-loosening and anti-falling protector shown in FIG. 3 from the direction A;
fig. 5 is an enlarged view of i in the assembly drawing of the normal pressure replaceable tool assembly and the anti-loosening and anti-falling protection device shown in fig. 3;
FIG. 6 is a cross-sectional view of an atmospheric hob with a blade pitch of 240 mm;
FIG. 7 is a schematic diagram of an alternative arrangement of three cutters in a normal pressure cutter head provided by the invention;
fig. 8 is a schematic diagram of a rock breaking track of three cutters alternately arranged in the normal-pressure cutter head provided by the invention;
FIG. 9 is an enlarged view of a portion of FIG. 8;
wherein: a cutter head main body-100; a knife box-101; a knife beam-102; a constant pressure replaceable hob assembly-200; a gate-201; a knife cylinder-202; a tool apron-203; a hob locking wedge assembly-204; hobbing cutter locking bolt-205; a hob cutter-206; a cutter attachment plate-207; normal pressure replaceable cutter assembly-300; a common knife assembly-400; anti-loose and anti-drop protection device-500; an anti-loosening plate-501; a lockbolt-502; a bolt sleeve-503; an anti-drop protection plate-504; a fastening bolt-505; a locking pin-506; a first sealing member-507; a second sealing member-508.
Detailed Description
The invention provides the anti-loosening and anti-falling protection device which can effectively improve the stability of the cutter, is not easy to loosen and fall off, and avoids serious accidents. The other core of the invention is to provide the normal pressure cutterhead comprising the anti-loosening and anti-falling protection device.
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 only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Referring to fig. 1 to 9, fig. 1 is a schematic front structural view of an embodiment of a normal pressure cutter head according to the present invention; FIG. 2 is a schematic side view of an embodiment of a normal pressure cutter head according to the present invention; fig. 3 is a schematic view of an assembly structure of a normal pressure replaceable cutter assembly and an anti-loosening and anti-falling protection device in a normal pressure cutter head provided by the invention; FIG. 4 is a schematic view of the assembly of the atmospheric replaceable tool assembly and the anti-loosening and anti-falling protector shown in FIG. 3 from the direction A; fig. 5 is an enlarged view of the assembly drawing I of the normal pressure replaceable cutter assembly and the anti-loosening and anti-falling protection device shown in fig. 3; FIG. 6 is a cross-sectional view of an atmospheric hob with a blade pitch of 240 mm; FIG. 7 is a schematic diagram of an alternative arrangement of three cutters in a normal pressure cutter head provided by the invention; fig. 8 is a schematic diagram of a rock breaking track of three cutters alternately arranged in the normal-pressure cutter head provided by the invention; fig. 9 is a partially enlarged view of fig. 8.
In this embodiment, the anti-loosening and anti-dropping protector 500 is applied to a normal pressure replaceable tool assembly having a tool, a tool locking bolt, and a tool cylinder 202; the anti-loosening and anti-dropping protection device 500 comprises an anti-loosening plate 501, an anti-dropping protection plate 504 and a locking screw. Specifically, the cutter may be a hob or a cutter replaceable at normal pressure, and the cutter locking bolt is the hob locking bolt 205 or the cutter locking bolt.
Wherein, locking plate 501 and cutter locking bolt butt, locking plate 501 compresses tightly on cutter locking bolt promptly, it is concrete, locking plate 501 and cutter locking bolt's bolt head butt, anti-drop protection shield 504 is located locking plate 501 and keeps away from cutter locking bolt one side, locking bolt 502 is installed on anti-drop protection shield 504, locking bolt 502's screw rod tip and locking plate 501 butt, anti-drop protection shield 504 sets firmly on sword section of thick bamboo 202, preferably bolted connection between anti-drop protection shield 504 and the sword section of thick bamboo 202, the dismouting of being convenient for, firm in connection.
According to the anti-loosening and anti-falling protection device 500 provided by the invention, the tool locking bolt is effectively prevented from being loosened and the loosening degree of the tool is reduced by abutting the tool locking bolt through the anti-loosening plate, meanwhile, the anti-loosening protection plate 504 and the anti-loosening bolt 502 are abutted to the anti-loosening plate 501, the stability of the anti-loosening plate 501 is improved, the loosening degree of the tool is further reduced, meanwhile, the anti-loosening protection plate 504 and the tool cylinder 202 are fixedly connected, even if the tool locking bolt is loosened, the tool locking bolt cannot fall off, larger accidents are avoided, and the stability of the operation of the normal-pressure cutterhead is effectively improved.
Specifically, the anti-loosening and anti-falling protection device 500 provided by the present invention can be applied to the normal pressure replaceable hob assembly 200, and can also be applied to the normal pressure replaceable hob assembly 300. This document describes the use of replaceable hob assemblies as an example.
In addition to the above embodiments, the locking bolt 502 is screwed to the anti-drop protection plate 504, that is, the locking bolt 502 is screwed to the anti-drop protection plate 504, and the end of the screw of the locking bolt 502 abuts on the side surface of the anti-drop plate 501 away from the tool.
In addition to the above embodiments, the lock device further includes a lock pin 506 attached to the drop-off prevention protection plate 504, and the lock pin 506 can be locked to the shutter 201. With the above arrangement, the locking pin 506 is connected to the shutter 201, so that the stability of the anti-drop protection plate 504 can be further improved.
In addition to the above embodiments, a seal member arranged in the circumferential direction of the knife cylinder 202 is provided between the fall-off prevention plate 504 and the knife cylinder 202. Specifically, a second sealing member 508 is provided between the anti-drop protective plate 504 and the knife cylinder 202, and the second sealing member 508 is preferably a rubber ring.
In addition to the above embodiments, the lock bolt 502 further includes a bolt sleeve 503 provided on the outer peripheral portion of the nut, and the bolt sleeve 503 is hermetically connected to the surface of the drop-off prevention protection plate 504.
Further, a sealing member is provided between the bolt housing 503 and the anti-drop protection plate 504. Specifically, a first sealing member 507 is provided between the bolt sleeve 503 and the anti-drop protection plate 504, and the first sealing member 507 is preferably a rubber ring.
Further, this locking anti-drop protection device 500 at first utilizes anti-loose plate 501 to compress tightly cutter locking bolt, prevents the pine and takes off, plays first heavy protection, if touch strong impact, cutter locking bolt is pushed up absolutely, and the cutter is direct to be pressed on anti-loose plate 501, and is ejecting with anti-loose bolt 502, and the cutter can be pressed anti-loose plate 501 and retreat together, and at this moment, anti-drop protection shield 504 carries out duplicate protection, prevents that the cutter from continuing to retreat to prevent that the cutter from dropping.
In addition to the above embodiments, a space for ejecting and withdrawing is provided between the bolt housing 503 and the drop-off preventing plate 504. Specifically, a certain jacking space is reserved inside the bolt sleeve 503, and after the check bolt 502 is jacked out, the jacking space can play an avoiding effect, so that the check bolt 502 is prevented from jacking the bolt sleeve 503, and the first sealing part 507 is still effective; meanwhile, the anti-falling protection plate 504 is matched with the seal between the inner wall of the knife cylinder 202; through double sealing, the working process is guaranteed not to lose pressure.
On the basis of the above embodiments, the anti-loosening device further comprises a bolt sleeve supporting barrel detachably mounted on the anti-loosening protective plate 504, the bolt sleeve supporting barrel is located on one side, away from the cutter, of the anti-loosening protective plate 504, a plurality of bolt sleeves 503 are arranged in the bolt sleeve supporting barrel, and each bolt sleeve 503 corresponds to one loosening-preventing bolt 502. Preferably, the bolt housing supporting cylinder is bolted to the falling-off prevention protection plate 504. Specifically, the bolt bush support cylinder is fastened to the anti-drop protection plate 504 by bolts, and the positions of the bolt bushes 503 in the bolt bush support cylinder and the anti-drop bolts 502 are in one-to-one correspondence, so that each bolt bush 503 seals one anti-drop bolt 502.
Besides the anti-loosening and anti-dropping protection device 500, the invention also provides a normal pressure cutterhead comprising the anti-loosening and anti-dropping protection device 500. The normal pressure cutterhead comprises a cutterhead main body 100, a normal pressure replaceable cutter assembly installed on the cutterhead main body 100 and the anti-loosening and anti-falling protection device 500.
Specifically, the normal pressure replaceable cutter assembly comprises a normal pressure replaceable hob assembly 200 and a normal pressure replaceable cutter assembly 300, the normal pressure cutterhead further comprises a common cutter assembly 400, and the normal pressure replaceable hob assembly 200, the normal pressure replaceable cutter assembly 300 and the common cutter assembly 400 are mounted on the cutterhead main body 100 and play a role in crushing and scraping rock and soil. The cutter head main body 100 is a main body structure of a normal-pressure cutter head and comprises a plurality of cutter boxes 101 and cutter beams 102, wherein the cutter boxes 101 and the cutter beams 102 are alternately and uniformly distributed; the cutter box 101 can be provided with a normal pressure replaceable hob assembly 200 and a normal pressure replaceable cutter assembly 300, and cutters are replaced through a normal pressure cutter changing channel arranged in the cutter box; the tool beam 102 is only provided with the common tool assembly 400, and the common tool assembly 400 does not have normal-pressure tool changing capacity and plays a role in assisting in scraping rock and soil in the excavation process.
Further, the normal pressure replaceable cutter assembly comprises a double-edge cutter, and the distance between two cutting edges of the double-edge cutter is 210-270mm. Specifically, the rock breaking path formed by the blades of the double-edged tool of each tool box 101 during rotation is one third of the distance between the two blades of the double-edged tool along the radial direction of the cutterhead body 100. Specifically, the double-edged cutters are arranged on different cutter boxes 101 in an alternating manner, the alternating arrangement is relative to the radial direction of the cutter head main body 100, for example, when the distance between two cutting edges in the normal-pressure replaceable cutter assembly is 210mm, after three cutters are arranged in an alternating manner, a cutter distance of 70mm can be realized in the circumferential direction of the cutter head main body 100; as shown in fig. 6, when the distance between two cutting edges in the normal pressure replaceable cutter assembly is 240mm, after three cutters are alternately arranged, a cutter distance of 80mm can be realized when viewed in the circumferential direction of the cutter head main body 100; when the distance between two cutting edges in the normal pressure replaceable cutter assembly is 270mm, after three cutters are alternately arranged, the cutter distance of 90mm can be realized in the circumferential direction of the cutter head main body 100. Specifically, the width of the cutter connecting plate 207 is adjusted to change the distance between the edges of the hobs 206, so that the requirement for arranging different cutter distances can be met.
Preferably, the atmospheric replaceable cutter assembly is an atmospheric replaceable hob assembly 200, and the atmospheric replaceable hob assembly 200 includes a double-shaft double-edged hob. Above-mentioned setting is through selecting the hobbing cutter 206 among the removable hobbing cutter subassembly 200 of ordinary pressure to be biax twolip hobbing cutter for each cutting edge all has independent bearing, and the cutter bears the weight of the dynamic height, and the form of arranging is improved broken rock efficiency again to the knife interval, makes this ordinary pressure blade disc can adapt to extremely hard rock stratum excavation.
Further, hobbing cutter 206 among the removable hobbing cutter subassembly 200 of ordinary pressure passes through hobbing cutter locking wedge subassembly 204, hobbing cutter locking bolt 205 fixes on blade holder 203, the broken rock in-process of cutter receives very big vibration, lead to hobbing cutter locking bolt 205 not hard up easily, make hobbing cutter 206 can't lock and the drunkenness, and the ordinary pressure blade disc is in the hard rock stratum tunnelling, hobbing cutter 206 breaks the rock and receives strong impact, under the heavy load effect, make not hard up hobbing cutter locking bolt 205 receive shear stress and fracture very easily, lead to hobbing cutter 206 to drop, cause the engineering accident.
In a specific embodiment, the anti-loosening and anti-falling protection device 500 is arranged at the bottom of the normal-pressure replaceable hob assembly 200, the anti-loosening plate 501 is arranged at the bottom of the hob base 203, the anti-loosening plate 501 is provided with a fixing hole, the anti-loosening plate 501 is tightly attached to the hob base 203 and the hob locking bolt 205 through the adjustment of the anti-loosening bolt 502, and the hob locking bolt 205 is fixed, so that the hob locking bolt 205 is prevented from loosening in the working process; the locking bolt is installed on the anti-drop protection plate, and the anti-drop protection plate is connected and fixed with the knife cylinder 202 through the fastening bolt 505 and is connected with the gate 201 through the locking pin 506. Under the action of a large impact load, the lock bolt 502 is broken, or the thread is failed, the lock bolt 502 is ejected out, so that the lock bolt 502 cannot play a role of protection, the hob 206 and the tool apron 203 thereof may be ejected into the knife cylinder 202, the anti-falling protective plate 504 arranged at the moment can support and resist to prevent the hob 206 from completely falling off, and the anti-falling protective plate 504 can bear a large impact load under the double protection of the fastening bolt 505 and the locking pin 506.
Regarding the arrangement of the cutters, in a specific embodiment, as shown in fig. 8 and 9, it is assumed that the S1 th hob is arranged on the No. 6 cutter box (as the cutter box 6 in the figure), the S2 th hob is arranged on the No. 1 cutter box (as the cutter box 1 in the figure), the S3 th hob is arranged on the No. 2 cutter box (as the cutter box 2 in the figure), finally, the three cutters have 6 cutting edges in total, the cutter head rotates to form 6 rock breaking tracks, and for the double-edged cutter with the distance between the two cutting edges being 240mm, the cutter distance between the adjacent rock breaking tracks is 80mm; the knife box is alternated with a plurality of groups of three knives, so that the knife intervals of the front knives are all 80mm, and the knife intervals of the main area of the front face are all 80mm. Similarly, when a double-edge cutter with the distance between two cutting edges being 270mm is used, the distance between two adjacent rock breaking tracks is 90mm; when a double-edged tool with a distance of 210mm between two cutting edges is used, the distance between two adjacent rock breaking tracks is 70mm.
For the other structures of the normal pressure cutter head, reference is made to the prior art, and details are not repeated herein.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The anti-loosening and anti-falling protection device provided by the invention is described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.
Claims (9)
1. A kind of anti-loose anti-drop protective device (500), apply to the removable cutter assembly of ordinary pressure with cutter, cutter lock bolt and knife cylinder (202), characterized by that, including the anti-loose plate (501) that butts with the said cutter lock bolt, locate at the anti-loose plate (501) keep away from the said cutter lock bolt side anti-drop protective plate (504) and install on said anti-loose protective plate (504) and anti-loose bolt (502) that butts with the said anti-loose plate (501); the anti-falling protection plate (504) is fixedly arranged on the knife cylinder (202); the anti-loosening device further comprises a bolt sleeve (503) arranged on the periphery of the nut of the anti-loosening bolt (502), and the bolt sleeve (503) is connected with the surface of the anti-loosening protection plate (504) in a sealing mode.
2. The anti-loosening and anti-falling protector (500) according to claim 1, further comprising a locking pin (506) installed on the anti-falling protector plate (504), wherein the locking pin (506) is lockable with a shutter (201).
3. The anti-loosening and anti-falling protector (500) according to claim 1, characterized in that a sealing part arranged along the circumferential direction of the knife cylinder (202) is provided between the anti-falling protection plate (504) and the knife cylinder (202).
4. The anti-loosening and anti-falling protection device (500) according to claim 1, wherein a jacking space is arranged between the bolt sleeve (503) and the anti-falling protection plate (504).
5. The anti-loosening and anti-falling protection device (500) as claimed in claim 1, further comprising a bolt sleeve supporting cylinder detachably mounted on the anti-falling protection plate (504), wherein the bolt sleeve supporting cylinder is located at a side of the anti-falling protection plate (504) away from the tool, a plurality of bolt sleeves (503) are disposed in the bolt sleeve supporting cylinder, and each bolt sleeve (503) corresponds to one anti-falling bolt (502).
6. The anti-loosening and anti-falling protection device (500) according to claim 5, wherein the bolt sleeve supporting cylinder is bolted to the anti-falling protection plate (504).
7. An ordinary pressure cutter head comprises a cutter head main body (100), an ordinary pressure replaceable cutter assembly and an anti-loosening and anti-falling protection device (500) which are installed on the cutter head main body (100), and is characterized in that the anti-loosening and anti-falling protection device (500) is the anti-loosening and anti-falling protection device (500) according to any one of claims 1 to 6.
8. The atmospheric pressure cutterhead of claim 7, wherein the atmospheric pressure replaceable cutter assembly includes a double-edged cutter, the spacing between the two cutting edges of the double-edged cutter being 210-270mm; cutterhead main part (100) includes a plurality of alternate arrangement's sword case (101) and sword roof beam (102), the removable cutter unit mount of ordinary pressure is in on sword case (101), and each the broken rock orbit that the cutting edge formed when rotating in the twolip cutter of sword case (101), follows the radial interval of cutterhead main part (100) does the third of two cutting edge intervals on the twolip cutter.
9. The atmospheric pressure cutter head of claim 8, wherein said atmospheric pressure replaceable cutter assembly is an atmospheric pressure replaceable hob assembly (200), said atmospheric pressure replaceable hob assembly (200) comprising a double-shaft double-edged hob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011473153.XA CN112593968B (en) | 2020-12-15 | 2020-12-15 | Normal pressure cutter head and locking anti-drop protection device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011473153.XA CN112593968B (en) | 2020-12-15 | 2020-12-15 | Normal pressure cutter head and locking anti-drop protection device thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0932482A (en) * | 1995-07-24 | 1997-02-04 | Komatsu Ltd | Disk cutter device |
| JP4062466B2 (en) * | 1999-06-01 | 2008-03-19 | 株式会社小松製作所 | Disc cutter mounting structure |
| CN103216242A (en) * | 2012-11-20 | 2013-07-24 | 山东天工岩土工程设备有限公司 | Anti-loose structure of cutter for shield tunneling machine |
| CN108691551B (en) * | 2018-06-29 | 2024-04-09 | 中铁工程装备集团有限公司 | Novel front-mounted normal-pressure tool changing cylinder device and mounting method thereof |
| CN110006564B (en) * | 2019-04-18 | 2020-08-28 | 中铁隧道局集团有限公司 | Combined type hobbing cutter three-dimensional force measuring structure |
| CN110295919B (en) * | 2019-07-10 | 2020-06-26 | 盾构及掘进技术国家重点实验室 | Cutter holder structure for mounting hob |
| CN210637078U (en) * | 2019-09-20 | 2020-05-29 | 成龙建设集团有限公司 | Shield constructs locking structure that moves of hobbing cutter |
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