CN210834534U - Novel rotary cutting abrasion test device for hob ring - Google Patents
Novel rotary cutting abrasion test device for hob ring Download PDFInfo
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Abstract
The utility model discloses a novel hobbing cutter ring gyration cutting wear test device. In the test device, a telescopic oil cylinder is connected to a three-dimensional rack, a cross beam, a connecting plate, a three-dimensional force sensor and a cutter frame are sequentially connected to the lower portion of the telescopic oil cylinder, a bearing, a cutter shaft and a reduced-size cutter ring are connected to the inner portion of the cutter frame, a vertical sprayer guide rail is connected to the lower portion of the cutter frame, a transverse sprayer guide rail, a sprayer support and a sprayer are sequentially connected to the vertical sprayer guide rail, two sets of cutter frames, the reduced-size cutter ring and the sprayer are symmetrically distributed on the cross beam relative to the telescopic oil cylinder, an extremely hard rock sample is placed in a bin box, the bottom of the bin box is connected with a hydraulic motor. The test device can complete the whole process of the cutting abrasion test of the cutter ring under the conditions of water jet assistance and corrosive liquid, and can provide basis for predicting the abrasion service life of the hob cutter ring and designing the abrasion resistance of the hob cutter ring under the conditions of water jet assistance and corrosive liquid.
Description
Technical Field
The utility model relates to a rock tunnel boring machine hobbing cutter cutting wear test technical field, concretely relates to hobbing cutter ring gyration cutting wear test device under supplementary and corrosive liquids condition of water jet.
Background
Rock tunnel boring machines (TBM for short) are widely applied to tunnel excavation due to the advantages of high construction efficiency, high operation safety and the like. The TBM mainly depends on a hob on a cutter disc to cut broken rocks, and the rock breaking performance of the hob directly determines the reliability and stability of the TBM in the whole tunneling machine. The hob mainly comprises key components such as a hob ring, a hob hub and a hob shaft, the hob is in contact with rocks through the hob ring, due to the strong abrasiveness of the rocks, the hob ring is seriously worn in the cutting process, the service life of the hob is seriously restricted, and the rock breaking efficiency of the hob is seriously restricted, so that the frictional wear characteristic of the hob ring in the cutting process of the hob is very necessary to be mastered. The China is vast in breadth and complex in geological conditions, when a hob cuts a rock breaking stratum and relates to an extremely hard stratum (the compressive strength of rock is more than 150 MPa) or a corrosive stratum (the rock is in corrosive liquid environments such as seawater, strong acid, strong alkali and the like), even when part of the extremely hard stratum is in the corrosive liquid environment, the rock breaking efficiency of a hob ring is low, the abrasion loss of the hob ring is increased rapidly, and great problems are brought to the life prediction and the wear resistance design of the hob. In order to solve engineering problems of extremely hard rock, over-high abrasion of a hob ring and the like in a corrosive environment, novel auxiliary hob rock breaking methods are gradually proposed. The more typical auxiliary hob rock breaking method is a water jet auxiliary hob rock breaking method, and the invention patents (application numbers: 201710377326.X, 201811311806.7) applied by the Chinese iron-based re-engineering group Limited company have the following names: a rock breaking hob, a shield tunneling machine cutter head and a shield tunneling machine are disclosed, a heading machine and a cutting mechanism of the heading machine are provided, and a method for assisting the hob to break rock by installing a water jet device at the position of a hob seat or in the central area of the cutter head is provided. The invention patent applied by university of great ligature (application number: CN201310188881.X) is named as: a method and a structure for arranging high-pressure water jets in a heading machine cutterhead provide a method and a structure for arranging water jets on a TBM cutterhead to assist a hob to break rock.
The water jet assisted hob rock breaking method can provide hydraulic pressure to crack rock when a hob ring cuts the rock, and can scour the interface of the hob ring, so that corrosive abrasive on the interface of the hob ring is removed, and the contact temperature of the interface of the hob ring is reduced, thereby reducing the rock breaking load of the hob ring and the abrasion of the hob ring. Because original hobbing cutter cutting environment and cutting characteristic have been changed after increasing the water jet, and corrosive liquid has the corrosive effect to the hobbing cutter sword circle in addition, leads to hobbing cutter sword circle frictional wear characteristic to change for it is different with hobbing cutter sword circle wear characteristic in the traditional meaning, therefore it is supplementary and the influence law of corrosive liquid to the frictional wear characteristic of hobbing cutter sword circle to be necessary to study the water jet. The most effective means for obtaining the frictional wear characteristics of the water jet assistance and the corrosive liquid to the hob ring is achieved through an indoor test method, so that the design of a test device capable of researching the frictional wear rules of the water jet assistance and the corrosive liquid to the hob ring for cutting the extremely hard rock is very important.
Through research and research on relevant documents and data, relevant TBM hob abrasion test devices are designed by a plurality of units at present. The invention patent (application number: 201310032227.X) applied by the university of south China is named as: a hard rock hob rock breaking characteristic testing device relates to a testing device which can carry out a hob abrasion test, but the device adopts a mode of actively rotating a hob ring to realize the sliding friction abrasion of a hob, has certain difference with the real passive rotating friction abrasion of the hob ring, and cannot carry out a hob ring cutting abrasion test under the conditions of water jet assistance and corrosive liquid; the invention patent (application number: 201710905705.1) applied by the medium iron tunnel office group limited company is named as: a hob abrasion test experiment platform and a matched measurement and evaluation method are provided, a related abrasion test device also adopts a mode of actively rotating a hob to realize hob frictional abrasion, and the linear cutting abrasion of the hob is simulated, and the linear cutting abrasion of the hob has larger distortion with the real rotary cutting abrasion of the hob, and meanwhile, the test device cannot carry out a hob cutting abrasion test under the conditions of water jet assistance and corrosive liquid; the invention patent (application number: 201811158653.7) filed by the Changsha college is named as: the utility model provides a shield constructs cutter material wear test platform has developed a hobbing cutter material wear test device, and the device can't develop supplementary and hobbing cutter sword circle cutting wear test under the corrosive liquids condition of water jet, and when the hobbing cutter sword circle to the extremely hard rock of rubbing, because hobbing cutter sword circle cutting load is too big, arouses test device unstability of turning on one's side easily. Meanwhile, the hob and accessories thereof under the device are complex to disassemble and install, the installation position of the hob is not adjustable, and the capability of researching the frictional wear characteristic of a hob ring is limited.
In summary, the existing hob abrasion test device can complete the hob ring frictional wear test under the general conventional conditions, but the existing hob abrasion test device can not basically complete the hob ring cutting abrasion test under the conditions of water jet assistance and corrosive liquid. Meanwhile, when the hob cutter is used for cutting extremely hard rock, the hob cutter is larger in cutting load under the same cutting abrasion depth, so that the instability of a rock bin and even the whole testing device is easily caused, and the requirement on the stability of the abrasion testing device is higher. In addition, different installation radiuses exist on the hob disc, and the hob rotates around the circle center of the hob disc under the installation radiuses to cut broken rocks in a passive rotating mode, so that the passive rotating friction and wear characteristics of hob rings under different installation radiuses need to be researched. The utility model discloses to current hobbing cutter frictional wear test device not enough, combine the supplementary hobbing cutter frictional wear actual research demand with under the corrosive liquids condition of water jet, designed the supplementary hobbing cutter sword circle wear test device with under the corrosive liquids condition of this kind of water jet to realize different installation radius, cutting depth, around hobbing cutter center slew velocity, normal pressure, water jet and the corrosive liquids under the multi-parameter hobbing cutter sword circle cutting frictional wear test and monitoring.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hobbing cutter sword circle wear test device under supplementary and corrosive liquids condition of water jet realizes that the hobbing cutter sword circle cutting under supplementary and the corrosive liquids condition of water jet is extremely hard rock friction wear test and dynamic monitoring, researches hobbing cutter sword circle friction wear characteristic under the different parameters, for hobbing cutter wearing and tearing life prediction and the wearability design under the different parameters provide the support.
The utility model discloses mainly realize through following scheme, the utility model discloses mainly including flexible hydro-cylinder, three-dimensional frame, three-dimensional force sensor, reduced size cutter ring, infrared radiation thermometer, support base outer lane, extremely hard rock sample, wear-resisting roller, support base chassis, liquid pipe, hydraulic motor, feed bin box, frame brace rod, crossbeam brace rod, bearing right-hand member lid, arbor, fastening nut, horizontal shower nozzle guide rail, shower nozzle support, shower nozzle, water jet pipe, vertical shower nozzle guide rail, bearing left end lid, bearing, knife rest brace rod, connecting plate.
The telescopic oil cylinder is fixed in the middle of the three-dimensional rack, the right-angle turning part of the three-dimensional support is reinforced by a rack support rib, and the lower end of the three-dimensional support is fastened on the ground; the telescopic oil cylinder is connected with the cross beam through a piston rod of the telescopic oil cylinder, two cross beam supporting ribs are symmetrically arranged on the cross beam relative to the middle position of the cross beam, the cross beam is connected with the connecting plate through a bolt, the connecting plate is connected with the knife rest through the three-way force sensor, a dovetail groove structure is formed in the cross beam, and the knife rest can slide along the dovetail groove along with the connecting plate so as to achieve different installation radiuses and is finally locked and positioned by the bolt.
The cutter rest support ribs are distributed on two sides of the cutter rest, a pair of bearings are mounted in the cutter rest, the left side and the right side of the cutter rest are connected with the left end cover and the right end cover of the bearing and used for positioning the outer ring of the bearing, and a sealing ring is distributed between the right end cover of the bearing and the cutter shaft; the bearing inner ring is in interference fit connection with the cutter shaft, the cutter shaft is connected with the reduced-size cutter ring through a key and is screwed on the cutter shaft through the fastening nut, and the reduced-size cutter ring can rotate together with the cutter shaft and the bearing inner ring; the bearing outer ring is in interference connection with the interior of the tool rest; the three-dimensional force sensor, the tool rest, the tool shaft, the reduced-size tool ring and the fastening nut are symmetrically distributed on the cross beam about the telescopic oil cylinder, and the required reduced-size tool ring is in contact with the extremely hard rock sample.
The vertical sprayer guide rail is connected to the position right below the cutter frame, and the transverse sprayer guide rail can move up and down on the vertical sprayer guide rail and is finally fastened and positioned by bolts; the transverse spray head guide rail is provided with a dovetail groove structure, and the spray head bracket can move left and right on the transverse spray head guide rail and is finally fastened and positioned by bolts; the spray head is connected to the spray head support, the spray head can swing on the spray head support by any angle and is finally fastened and positioned by bolts, and the spray head with different structural forms can be mounted on the spray head support.
The ultra-hard rock sample and the bin box are both circular, the ultra-hard rock sample is placed in the bin box and is fastened by four symmetrically distributed bolts, the height of the bin box is higher than that of the ultra-hard rock sample, an anti-corrosion layer is coated on the inner surface of the bin box, the bottom of the bin box is connected with the hydraulic motor through bolts, and the hydraulic motor is fixed on the ground; bin box edge bottom and a plurality of wear-resisting roller contact, a plurality of wear-resisting roller evenly arrange in support in the hemisphere face recess on base chassis, wear-resisting roller can freely roll in the hemisphere face recess, support the base chassis and pass through wear-resisting roller supports and live feed bin box edge.
The infrared thermometer is fixedly connected to the outer ring of the supporting base and is opposite to the central position of the size-reduced cutter ring, so that the overall temperature distribution characteristics of the surface of the size-reduced cutter ring in the test process can be acquired in real time; and a liquid discharge hole is formed at the joint of the outer ring of the supporting base and the base plate of the supporting base, and the liquid discharge hole is connected with the liquid guide pipe.
The vertical movement of the cross beam, the tool rest and the reduced-size cutter ring is controlled by the telescopic movement of a piston rod of the telescopic oil cylinder, and the telescopic oil cylinder has the functions of locking displacement and keeping constant pressure, so that the friction wear test under the constant pressure and the constant cutting depth of the reduced-size cutter ring can be ensured; the circular rotation of feed bin box and extremely hard rock sample by hydraulic motor is rotatory to be realized, hydraulic motor can realize hydraulic motor rotational speed infinitely variable control through velocity of flow and pressure adjustment, and then realizes the rotational speed infinitely variable control of feed bin box and extremely hard rock sample.
The three-way force sensor is used for testing three-way load data of the shrinkage cutter ring abrasion under the conditions of water jet assistance and corrosive liquid, and calculating a corresponding friction coefficient.
Considering that the structure size of the real hob ring is too large, indoor abrasion test research is not convenient to develop, and the price of the full-size hob ring is too high, the reduced-size hob ring is adopted to replace the real hob ring, and the mechanical properties of the material and the heat treated hob ring are consistent with those of the real hob ring.
Compared with the prior art, the utility model discloses can realize under the supplementary and corrosive liquids condition of water jet or under both coupling conditions the very hard rock frictional wear test of reduced size cutter ring cutting, the installation of reduced size cutter ring is very convenient simple with the dismantlement in the testing process, but the installation radius continuous regulation, and device stable in structure can overcome and extremely hard rock cutting wearing and tearing down because the too big device scheduling problem that arouses of load turns on one's side. Simultaneously, the wear test device operation flow who relates is simple, can directly obtain characteristics such as cutting wear load, cutter ring temperature field, wearing and tearing volume and cutter ring wearing and tearing mechanism in the cutter ring wearing and tearing process, consequently the utility model discloses real hobbing cutter ring passive rotation friction wear characteristic in the simulation engineering that can be fine can provide the basis for hobbing cutter ring wearing and tearing life prediction and the wearability design under water jet and the corrosive liquid condition.
Drawings
FIG. 1 is a schematic diagram of the front structure of the testing device according to the present invention;
FIG. 2 is a partially-sectioned top view schematic diagram of a very hard rock sample, a wear-resistant roller and a supporting base chassis;
FIG. 3 is an enlarged view of the connection area of the components such as the reduced-size cutter ring, the bearing, the cutter holder, the nozzle, etc.;
FIG. 4 is a schematic view of a dovetail groove structure inside a cross beam;
FIG. 5 is a side view of the reduced size cutter ring;
in the drawings: 1-telescopic oil cylinder, 2-three-dimensional frame, 3-three-way force sensor, 4-reduced-size cutter ring, 5-infrared thermometer, 6-outer ring of support base, 7-sample of extremely hard rock, 8-wear-resistant roller, 9-base chassis of support, 10-liquid conduit, 11-hydraulic motor, 12-bin box, 13-frame support rib, 14-beam, 15-beam support rib, 16-right end cover of bearing, 17-cutter shaft, 18-fastening nut, 19-transverse nozzle guide rail, 20-nozzle support, 21-nozzle, 22-water jet conduit, 23-vertical nozzle guide rail, 24-left end cover of bearing, 25-bearing, 26-cutter frame, 27-cutter frame support rib and 28-connecting plate.
Detailed Description
The present invention will be further described with reference to the accompanying drawings and the detailed description.
As shown in fig. 1, fig. 2 and fig. 3, the hobbing cutter ring abrasion test device under the water jet assisted and corrosive liquid conditions is composed of a telescopic oil cylinder 1, a three-dimensional frame 2, a three-way force sensor 3, a reduced-size cutter ring 4, an infrared thermometer 5, a support base outer ring 6, an extremely hard rock sample 7, a wear-resistant roller 8, a support base chassis 9, a liquid conduit 10, a hydraulic motor 11, a bin box 12, a frame support rib 13, a cross beam 14, a cross beam support rib 15, a bearing right end cover 16, a cutter shaft 17, a fastening nut 18, a transverse spray head guide rail 19, a spray head support 20, a spray head 21, a water jet conduit 22, a vertical spray head guide rail 23, a bearing left end cover 24, a bearing 25, a cutter frame 26, a cutter frame support rib 27 and.
The telescopic oil cylinder 1 is fixed in the middle of the three-dimensional frame 2, the right-angle turning part of the three-dimensional support 2 is reinforced by a frame support rib 13 and used for enhancing the overall mechanical strength and rigidity of the three-dimensional support 2, and the lower end of the three-dimensional support 2 is fastened on the ground; the telescopic oil cylinder 1 is connected with a cross beam 14 through a piston rod of the telescopic oil cylinder, and two cross beam support ribs 15 are symmetrically arranged on the cross beam 14 relative to the telescopic oil cylinder 1 and used for enhancing the overall mechanical strength and rigidity of the cross beam 14; the cross beam 14 is connected with a connecting plate 28 through bolts, the connecting plate 28 is connected with the tool rest 26 through the three-way force sensor 3, a dovetail groove structure is formed in the cross beam 14, the tool rest 26 can slide along the dovetail groove along with the connecting plate 28 to achieve different installation radiuses, and finally the tool rest is locked and positioned through the bolts, and the dovetail groove structure is shown in fig. 4.
The two sides of the knife rest 26 are provided with knife rest support ribs 27 which can improve the overall mechanical strength and rigidity of the knife rest 26; a pair of bearings 25 is arranged in the tool rest 26, the left side and the right side of the tool rest 26 are connected with a bearing left end cover 24 and a bearing right end cover 16 for positioning the outer ring of the bearing 25, and a sealing ring is distributed between the bearing right end cover 16 and the cutter shaft 17 for blocking external water or corrosive liquid from entering the bearing 25; the inner ring of the bearing 25 is in interference fit connection with the cutter shaft 17, the cutter shaft 17 is connected with the reduced-size cutter ring 4 through a key, and is screwed on the cutter shaft 17 through a fastening nut 18 for fastening the reduced-size cutter ring 4, and the reduced-size cutter ring 4 can rotate together with the cutter shaft 17 and the inner ring of the bearing 25; the outer ring of the bearing 25 is in interference fit with the inside of the tool holder 26.
Preferably, the reduced size cutter ring 4 has a diameter size of about 1/3 for a real hob ring, a diameter of 140mm, a cutting edge width of 5mm, and mechanical properties after material and heat treatment consistent with those of a real hob ring, and a side view of the reduced size cutter ring is shown in fig. 5.
The three-way force sensor 3, the tool rest 26, the cutter shaft 17, the reduced-size cutter ring 4 and the fastening nut 18 are symmetrically distributed on the cross beam 14 about the telescopic oil cylinder 1, the reduced-size cutter ring 4 is in contact with the extremely hard rock sample 7, and constant pressure or constant cutting depth can be kept through the telescopic oil cylinder 1.
As shown in fig. 3, a vertical nozzle guide rail 23 is connected just below the tool holder 26, and the transverse nozzle guide rail 19 can move up and down on the vertical nozzle guide rail 23 and is finally fastened and positioned by a bolt; the transverse spray head guide rail 19 is provided with a dovetail groove structure, and the spray head bracket 20 can move left and right on the transverse spray head guide rail 19 and is finally fastened and positioned by bolts; the spray head 21 is connected to the spray head support 20, the spray head 21 can swing on the spray head support 20 at any angle and is finally fastened and positioned by bolts, and spray heads 21 with different structural forms can be installed on the spray head support 20; in a word, the relative position and the relative angle of the spray head 20, the reduced-size cutter ring 4 and the extremely hard rock sample 7 can be controlled and adjusted through the vertical spray head guide rail 23, the transverse spray head guide rail 19 and the spray head bracket 20.
The extremely hard rock sample 7 and the bin box 12 are both circular, and the extremely hard rock sample 7 is placed in the bin box 12 and is fastened by four symmetrically distributed bolts. In specific implementation, all surfaces of the extremely hard rock sample 7 are polished to be flat through a polisher, so that the levelness of the surfaces when the extremely hard rock sample is placed in the bin box 12 is ensured, and the size-reduced cutter ring 4 and the extremely hard rock sample 7 are smoothly abraded by friction; it is generally preferred to use rock having a compressive strength of over 150MPa, a diameter of 500mm and a height of 100mm as the extremely hard rock sample.
The height of the bin box 12 is higher than that of the extremely hard rock sample 7, and is generally 50-100 mm higher than the surface of the extremely hard rock sample 7, so that corrosive liquid on the surface of the extremely hard rock sample 7 can be conveniently stored, wherein the corrosive liquid generally refers to seawater, strong acid liquid, strong alkali liquid and other liquid media which are corrosive to a hob ring in the TBM construction process; the inner surface of the feed bin box 12 is coated with an anti-corrosion layer to ensure that the feed bin box 12 is not damaged by corrosive liquid; the bottom of the material bin box 12 is connected with a hydraulic motor 11 through a bolt, and the hydraulic motor 11 is fixed on the ground; the contact of feed bin box 12 edge bottom and the wear-resisting roller 8 of a plurality of, the wear-resisting roller quantity of general preferred is 12, wear-resisting roller 8 evenly arranges in the hemisphere face recess that supports base chassis 9, contain lubricating oil in the recess, support base chassis 9 and support the edge of holding feed bin box 12 through wear-resisting roller 8, when feed bin box 12 rotates, wear-resisting roller 8 can freely roll in the hemisphere face recess, when can effectively reduce feed bin box 12 rotation resistance, can also prevent because phenomenon such as feed bin box 12 turns on one's side that the too big guide of reduced size cutter ring 4 cutting wearing load.
The infrared thermometer 5 is fixedly connected to the outer ring 6 of the supporting base and is opposite to the central position of the reduced-size cutter ring 4, so that the overall temperature distribution characteristics of the surface of the reduced-size cutter ring 4 in the test process can be acquired in real time; a liquid discharge hole is formed in the joint of the supporting base outer ring 6 and the supporting base chassis 9, and the liquid discharge hole is connected with a liquid guide pipe 10 and used for discharging water jet liquid or corrosive liquid overflowing during a friction test of the water jet auxiliary size-reducing cutter ring 4.
The vertical up-and-down movement of the reduced-size cutter ring 4 is realized through the telescopic movement control of a piston rod of the telescopic oil cylinder 1, and the telescopic oil cylinder 1 has the functions of locking displacement and keeping constant pressure, so that the constant pressure or the constant cutting depth in the abrasion process of the reduced-size cutter ring 4 and the extremely hard rock sample 7 can be ensured; the uniform rotation of the material bin box 12 and the extremely hard rock sample 7 is realized through the driving of the hydraulic motor 11, the rotation speed of the hydraulic motor 11 can be adjusted in a stepless mode, and generally, the maximum rotation speed of the hydraulic motor 11 is preferably twenty circles per minute.
The three-way force sensor 3 is used for testing the three-way load data of the abrasion of the shrinkage cutter ring 4 under the conditions of water jet assistance and corrosive liquid, the ratio of the tangential load to the vertical load is calculated, and the friction coefficient of the hob cutter ring for cutting abraded rocks can be obtained.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments. Modifications to other structural designs of the invention may be readily effected by those skilled in the art. Therefore, the invention is not to be limited to the specific details and illustrations shown herein, without departing from the general concept defined by the claims and their equivalents.
Claims (6)
1. The utility model provides a novel hobbing cutter ring gyration cutting wear test device which characterized in that: the device comprises a telescopic oil cylinder (1), a three-dimensional rack (2), a three-way force sensor (3), a reduced-size cutter ring (4), an infrared thermometer (5), a supporting base outer ring (6), a very hard rock sample (7), a wear-resistant roller (8), a supporting base chassis (9), a liquid guide pipe (10), a hydraulic motor (11), a storage bin box (12), a rack support rib (13), a cross beam (14), a cross beam support rib (15), a bearing right end cover (16), a cutter shaft (17), a fastening nut (18), a transverse spray head guide rail (19), a spray head support (20), a spray head (21), a water jet guide pipe (22), a vertical spray head guide rail (23), a bearing left end cover (24), a bearing (25), a cutter rest (26), a cutter rest support rib (27) and a connecting plate (;
the telescopic oil cylinder (1) is fixed in the middle of the three-dimensional rack (2), the right-angle turning part of the three-dimensional support (2) is reinforced by a rack support rib (13), and the lower end of the three-dimensional support (2) is fastened on the ground; the telescopic oil cylinder (1) is connected with a cross beam (14) through a piston rod of the telescopic oil cylinder, two cross beam support ribs (15) are symmetrically arranged on the cross beam (14) relative to the telescopic oil cylinder (1), the cross beam (14) is connected with a connecting plate (28) through a bolt, and the connecting plate (28) is connected with a tool rest (26) through a three-way force sensor (3);
tool rest support ribs (27) are distributed on two sides of the tool rest (26), a pair of bearings (25) are installed in the tool rest (26), a cutter shaft (17) is connected to the inner ring of each bearing (25), a reduced-size cutter ring (4) is installed on each cutter shaft, and the reduced-size cutter ring (4) is in contact with the extremely hard rock sample (7); two sets of size-reducing cutter rings (4), a cutter frame (26) and a three-way force sensor (3) are symmetrically distributed on the cross beam relative to the telescopic oil cylinder;
a vertical spray head guide rail (23) is connected under the tool rest (26), a transverse spray head guide rail (19) is connected on the vertical spray head guide rail (23), a spray head bracket (20) is connected on the transverse spray head guide rail (19), and a spray head (21) is connected on the spray head bracket (20);
the extremely hard rock sample (7) is placed in the bin box (12) and is fastened by four symmetrically distributed bolts; the height of the bin box (12) is higher than that of the extremely hard rock sample (7), and the inner surface of the bin box (12) is coated with an anti-corrosion layer; the bottom of the material bin box (12) is connected with a hydraulic motor (11) through a bolt, and the hydraulic motor (11) is fixed on the ground;
the infrared thermometer (5) is fixedly connected to the outer ring (6) of the supporting base and is opposite to the central position of the reduced-size cutter ring (4); the joint of the outer ring (6) of the supporting base and the chassis (9) of the supporting base is provided with a liquid discharge hole which is connected with a liquid conduit (10).
2. The novel hob ring rotary cutting wear test device according to claim 1, characterized in that: the cross beam (14) is internally provided with a dovetail groove structure, and the tool rest (26) can slide along the dovetail groove along with the connecting plate (28) so as to achieve different installation radiuses and can be locked and positioned by bolts.
3. The novel hob ring rotary cutting wear test device according to claim 1, characterized in that: the left side and the right side of the tool rest (26) are connected with a bearing left end cover (24) and a bearing right end cover (16) which are used for positioning an outer ring of the bearing (25), and sealing rings are distributed between the bearing right end cover (16) and the cutter shaft (17); the inner ring of the bearing (25) is in interference connection with the cutter shaft (17), the cutter shaft (17) is connected with the reduced-size cutter ring (4) through a key and is screwed on the cutter shaft (17) through a fastening nut (18) for fastening the reduced-size cutter ring (4), and the reduced-size cutter ring (4) can rotate together with the cutter shaft (17) and the inner ring of the bearing (25); the outer ring of the bearing (25) is in interference connection with the inside of the tool holder (26).
4. The novel hob ring rotary cutting wear test device according to claim 1, characterized in that: the transverse spray head guide rail (19) can move up and down on the vertical spray head guide rail (23) and can be fastened and positioned by bolts; the transverse spray head guide rail (19) is provided with a dovetail groove structure, and the spray head bracket (20) can move left and right on the transverse spray head guide rail (19) and can be fastened and positioned by bolts; the spray head (21) can swing at any angle on the spray head bracket (20) and can be fastened and positioned by bolts, and the spray head (21) with different structural forms can be arranged on the spray head bracket (20).
5. The novel hob ring rotary cutting wear test device according to claim 1, characterized in that: the bottom of the edge of the bin box (12) is in contact with a plurality of wear-resistant rollers (8), the wear-resistant rollers (8) are uniformly arranged in a hemispherical groove of the supporting base chassis (9), and the supporting base chassis (9) supports the edge of the bin box (12) through the wear-resistant rollers (8).
6. The novel hob ring rotary cutting wear test device according to claim 1, characterized in that: the infrared thermometer (5) is used for monitoring the integral surface temperature characteristic of the reduced-size cutter ring (4) in real time; the telescopic oil cylinder (1) has the functions of locking displacement and keeping constant pressure; the rotating speed of the hydraulic motor (11) can be adjusted in a stepless manner; the three-way force sensor (3) can monitor the cutting wear three-way load data of the reduced-size cutter ring (4) in real time.
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| CN201920807367.2U CN210834534U (en) | 2019-05-31 | 2019-05-31 | Novel rotary cutting abrasion test device for hob ring |
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| CN201920807367.2U CN210834534U (en) | 2019-05-31 | 2019-05-31 | Novel rotary cutting abrasion test device for hob ring |
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| CN110057705A (en) * | 2019-05-31 | 2019-07-26 | 湖南师范大学 | Cutter ring abrasion test device and test method under a kind of water jet and corrosive liquid |
| CN113418814A (en) * | 2021-06-22 | 2021-09-21 | 湘潭大学 | Cutter ring sample-rock opposite grinding test method capable of simulating different slip rates |
| CN113418813A (en) * | 2021-06-22 | 2021-09-21 | 湘潭大学 | Cutter ring sample-rock opposite grinding test device and cutter ring sample clamping tool thereof |
| CN113652853A (en) * | 2021-08-20 | 2021-11-16 | 拓卡奔马机电科技有限公司 | Width detection device of cut-off knife for cutting bed |
| CN114769283A (en) * | 2022-04-14 | 2022-07-22 | 江苏杰夏环保科技有限公司 | SMP-based control processing system and processing method |
| CN117451560A (en) * | 2023-12-26 | 2024-01-26 | 武汉纺织大学 | Method and device for testing cutting resistance of knitted fabric |
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2019
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| CN110057705A (en) * | 2019-05-31 | 2019-07-26 | 湖南师范大学 | Cutter ring abrasion test device and test method under a kind of water jet and corrosive liquid |
| CN110057705B (en) * | 2019-05-31 | 2023-12-12 | 湖南师范大学 | Water jet and corrosive liquid lower cutter ring abrasion test device and test method |
| CN113418814A (en) * | 2021-06-22 | 2021-09-21 | 湘潭大学 | Cutter ring sample-rock opposite grinding test method capable of simulating different slip rates |
| CN113418813A (en) * | 2021-06-22 | 2021-09-21 | 湘潭大学 | Cutter ring sample-rock opposite grinding test device and cutter ring sample clamping tool thereof |
| CN113418813B (en) * | 2021-06-22 | 2022-06-07 | 湘潭大学 | Cutter ring sample-rock opposite grinding test device and cutter ring sample clamping tool thereof |
| CN113652853A (en) * | 2021-08-20 | 2021-11-16 | 拓卡奔马机电科技有限公司 | Width detection device of cut-off knife for cutting bed |
| CN114769283A (en) * | 2022-04-14 | 2022-07-22 | 江苏杰夏环保科技有限公司 | SMP-based control processing system and processing method |
| CN117451560A (en) * | 2023-12-26 | 2024-01-26 | 武汉纺织大学 | Method and device for testing cutting resistance of knitted fabric |
| CN117451560B (en) * | 2023-12-26 | 2024-04-12 | 武汉纺织大学 | Method and device for testing cutting resistance of knitted fabric |
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