CN109975056B - Diamond saw blade-cutting pick combined rock breaking test device and test method thereof - Google Patents
Diamond saw blade-cutting pick combined rock breaking test device and test method thereof Download PDFInfo
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- CN109975056B CN109975056B CN201910351078.0A CN201910351078A CN109975056B CN 109975056 B CN109975056 B CN 109975056B CN 201910351078 A CN201910351078 A CN 201910351078A CN 109975056 B CN109975056 B CN 109975056B
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- 239000011435 rock Substances 0.000 title claims abstract description 259
- 238000005520 cutting process Methods 0.000 title claims abstract description 236
- 238000012360 testing method Methods 0.000 title claims abstract description 58
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 51
- 239000010432 diamond Substances 0.000 title claims abstract description 51
- 238000010998 test method Methods 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 claims description 24
- 230000008569 process Effects 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 13
- 238000006073 displacement reaction Methods 0.000 claims description 6
- 230000008602 contraction Effects 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004904 shortening Methods 0.000 claims description 3
- 210000003739 neck Anatomy 0.000 claims 2
- 230000008859 change Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 241000276425 Xiphophorus maculatus Species 0.000 description 5
- 238000010168 coupling process Methods 0.000 description 5
- 238000005859 coupling reaction Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 230000008878 coupling Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003245 coal Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000036346 tooth eruption Effects 0.000 description 3
- 230000005641 tunneling Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000001502 supplementing effect Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 241001125877 Gobio gobio Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/008—Subject matter not provided for in other groups of this subclass by doing functionality tests
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Abstract
The invention relates to a diamond saw blade-cutting tooth combined rock breaking test device and a test method thereof, belonging to the technical field of cutting test tables of heading machines; the saw blade assembly support frame in the saw blade assembly can drive the saw blade to move horizontally, the saw blade group can move vertically along the saw blade assembly support frame, and the motor drives the saw blade to rotate for cutting; the box body pushing oil cylinder in the box body component controls the horizontal movement of the rock fixing device to drive the rock in the box body pushing oil cylinder to move to the lower part of the saw blade, and the cutting pick cutting component is used for cutting and crushing and collecting cutting force after cutting. Firstly, sawing of rock is completed, then the cutting pick is utilized to crush the rock mass with saw blade cutting slits, and the device can be used for researching the combined rock breaking performance of the saw blade and the cutting pick, observing the rock breaking effect and the cutting force change of the cutting pick rock containing the cutting slit rock, has stable movement, is easy to control and has excellent experimental effect.
Description
Technical Field
The invention relates to a diamond saw blade-cutting tooth combined rock breaking test device and a test method thereof, and belongs to the technical field of cutting test tables of heading machines.
Background
The heading machine is the most common machine for tunneling in coal production, and is a key device for ensuring the rapid and stable production tunneling of coal mine tunnels. In the rock drivage process, the drivage performance and efficiency of the drivage machine are improved mainly by adopting a mode of increasing cutting power, but as the machining process of a cutting tool is not changed, the increased power of the drivage machine is the cost improvement of the drivage machine, the size is increased, the drivage machine is difficult to be widely applied in a small-sized underground, meanwhile, the abrasion of cutting teeth is increased sharply, and the drivage cost of the rock drivage is obviously increased.
In order to solve the problems of low efficiency and high cost in the process of tunneling rock, a novel rock breaking mode is needed to improve the rock breaking efficiency and reduce the production cost. Diamond is the most rigid substance naturally occurring in nature, and the diamond saw blade can be used for cutting rock with larger compressive strength, so that the rock is provided with kerfs to form a multi-free-face platy rock body, and then the cutting pick is used for crushing, so that the diamond saw blade-cutting pick combined rock breaking method is formed.
The China patent document (application number 201420476934.8) provides a saw blade cutting-crushing device combined type heading machine, which is a practical mine application device, and adopts a mode of combining a saw blade and a crushing hammer to break rock, and can be used for crushing hard rock which cannot be cut by a traditional heading machine in a combined way. However, the breaking hammer mechanism adopted by the heading machine is unfavorable for practical application in the coal mine due to the fact that a larger telescopic space is needed, and meanwhile, the impact force of the breaking hammer is larger, so that disturbance is easily caused to roadway rocks. The device cannot be used in practice to study the relation between the rock sawing size and the impact hammer breaking.
The performance of the diamond saw blade and cutting pick combined rock breaking method is directly researched by adopting a mode of producing the diamond saw blade-cutting pick combined rock breaking heading machine, the cost is high, and a large amount of manpower and material resources are consumed. The rock breaking performance is researched by means of the diamond saw blade-cutting tooth combined rock breaking test device, and compared with an actual action device, the research efficiency can be effectively improved, and the cost is reduced. However, in the prior art, no test device for researching the performance of the combined diamond saw blade and cutting pick rock breaking mode exists.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a diamond saw blade-cutting pick combined rock breaking test device. In order to reduce time cost and labor cost and improve reliability of products, the invention relates to a diamond saw blade-cutting pick combined rock breaking test device. The method can be used for researching the combined rock breaking performance of the diamond saw blade and the cutting pick, and observing the rock breaking effect and the cutting force change of the cutting pick breaking rock containing the cutting rock.
The invention also provides a test method of the test device.
The technical scheme of the invention is as follows:
a diamond saw blade-cutting pick combined rock breaking test device comprises a fixed bottom plate, wherein a saw blade component and a box body component are arranged on the fixed bottom plate;
the saw blade assembly comprises a saw blade assembly guide rail and a saw blade assembly pushing oil cylinder, a saw blade assembly support frame is arranged on the saw blade assembly guide rail in a sliding mode, one end of the saw blade assembly support frame is connected with the saw blade assembly pushing oil cylinder, and the saw blade assembly pushing oil cylinder is used for controlling transverse displacement movement of the saw blade assembly support frame; the saw blade assembly support frame is provided with a saw blade group and a saw blade propelling oil cylinder, the saw blade group is connected with the saw blade propelling oil cylinder through a sleeve group, the saw blade propelling oil cylinder is used for controlling the vertical displacement motion of the saw blade group, one end of the sleeve group is connected with a motor, the motor is used for controlling the rotation of the sleeve so as to drive the rotation of the saw blade, the saw blade group is propelled downwards under the action of the saw blade propelling oil cylinder, the saw blade group is controlled to rotate through the motor so as to cut rock, and the telescopic quantity of the saw blade propelling oil cylinder determines the depth of a rock kerf;
the box subassembly includes box guide rail, rock fixing device, pick cutting subassembly, and rock fixing device locates on the box guide rail, and rock fixing device is used for placing and fixing experimental rock, and rock fixing device one end is equipped with box propulsion hydro-cylinder, is equipped with the box baffle on the fixed baseplate of rock fixing device both sides, is equipped with pick cutting subassembly between the box baffle, and pick cutting subassembly one end is equipped with pick subassembly propulsion hydro-cylinder, and pick cutting subassembly is used for cutting broken rock. The box body pushing oil cylinder drives the rock fixing device to horizontally move on the box body guide rail, and the saw blade group can cut to form different saw kerf lengths through the expansion and contraction of the box body pushing oil cylinder in the process of cutting the rock; after the cutting of the saw blade group is completed, the saw blade pushing oil cylinder contracts to drive the saw blade group to move upwards to leave the rock and then stop, the box pushing oil cylinder adjusts the rock fixing device to a proper position, and the cutting pick assembly pushing oil cylinder drives the cutting pick cutting assembly to cut and crush the rock in the rock fixing device.
The saw blade assembly support frame drives the saw blade group to move, so that the thickness of the platy rock mass formed by sawing according to the length of the sleeve can be further adjusted. The thickness of the plate-shaped rock body formed by the sleeve is fixed, and the cutting of the plate-shaped rock body with any thickness can be realized through double adjustment by moving the supporting frame of the saw blade assembly.
According to the invention, the number of the saw blade propelling cylinders is preferably two, one saw blade propelling cylinder is connected with the saw blade group through the sleeve group, and the other saw blade propelling cylinder is connected with the motor. The two cylinders need to be of the same specification, and the same oil pressure is given to realize synchronous propulsion of the motor and the saw blade group.
Further preferably, the motor is connected to one end of the blade pushing cylinder through a motor fixing plate, and the blade assembly support frame is provided with a fixing plate guide groove, and the width of the fixing plate guide groove is the same as the thickness of the motor fixing plate. When the saw blade propelling oil cylinder is propelled, the motor fixing plate vertically moves in the fixing plate guide groove, so that the stability of the movement of the motor fixing plate can be ensured.
According to the invention, the sleeve group comprises a sleeve with a grooved end, a spacing sleeve and a connecting shaft sleeve, a saw blade center shaft is arranged in the sleeve group, a spline is arranged on the saw blade center shaft, a spline groove is arranged on the inner wall of the sleeve group, the saw blade group comprises at least two saw blades, a through hole is arranged in the center of each saw blade, and a saw blade spline groove is arranged on each through hole;
the saw blade is arranged with the end part slotted sleeve, the interval sleeve and the connecting shaft sleeve at intervals, and the connecting shaft sleeve is connected with the motor output shaft. The motor outputs rotary kinetic energy to drive the sleeve of the connecting shaft to rotate, and the spline grooves of the sleeve group are matched with the spline of the center shaft of the saw blade to enable the center shaft of the saw blade to rotate. The saw blade and the sleeve group are arranged at intervals, the length and the number of the interval sleeves can be changed according to actual needs, and the distance between the diamond saw blades is controlled.
Further preferably, the saw blade center shaft comprises a shaft head, a shaft neck and a shaft body, the shaft body is provided with a spline, the sleeve group is in clearance fit with the shaft body, and the shaft head is connected with the saw blade propelling oil cylinder through an oil cylinder sleeve. The shaft head rotates freely in the cylinder sleeve, the saw blade pushes the cylinder sleeve to move vertically, and the saw blade center shaft rotates in the cylinder sleeve.
Further preferably, the shaft head is arranged in the middle of the middle shaft of the saw blade, and the shaft journals and the shaft bodies are sequentially arranged on two sides of the shaft head; the shaft journal is provided with shaft head end covers, and the two shaft head end covers are connected with the cylinder sleeve through threaded holes and bolts. The cooperation of the two shaft head end covers can fix the position of the saw blade center shaft in the cylinder sleeve.
Further preferably, a threaded rod is arranged at the end part of the shaft body at one end of the saw blade center shaft, the threaded rod is in threaded connection with a center shaft end cover, and the outer diameter of the center shaft end cover is the same as the outer diameter of the sleeve with the end part provided with the groove. The middle shaft end cover is used for axially fastening the sleeve group and the saw blade group on the middle shaft of the saw blade, and nuts can be additionally arranged on the outer side of the middle shaft end cover for further fastening.
Further preferably, the sleeve group further comprises a positioning sleeve, the positioning sleeve is arranged between the spacing sleeve and the connecting shaft sleeve, and the inner wall of the positioning sleeve is provided with spline grooves. The positioning sleeve is used for supplementing a gap between the coupling sleeve and the interval sleeve, and an elastic gasket can be further arranged between the coupling sleeve and the positioning sleeve.
According to the invention, the fixing bottom plate is also provided with a supporting frame positioning device, the supporting frame positioning device comprises a main body frame, the main body frame is provided with a through hole, and the main body frame is connected with the fixing bottom plate through a bolt; the side of the main body frame is provided with a radial bearing, the radial bearing is connected with the side of the main body frame through a supporting rod, and the saw blade component supporting frame is arranged above the radial bearing. The radial bearing is contacted with the saw blade assembly support frame, and when the saw blade assembly support frame moves on the saw blade assembly guide rail, the radial bearing can ensure that the saw blade assembly support frame is not inclined when being stabilized, and can bear smaller friction force in the moving process.
According to the invention, the rock fixing device comprises a box body, wherein a rock fixing plate is arranged in the box body, a positioning groove is formed in the rock fixing plate, a through hole is formed in the side wall of the box body, a fastening rod penetrates through the through hole and is embedded into the positioning groove, an external thread is arranged on the fastening rod, and the fastening rod is connected with a nut on the outer side of the box body. After the rock is put into, the fastening rod penetrates through the through hole and stretches into the positioning groove of the rock fixing plate, the rock fixing plate is pushed to fasten the rock, and then the fastening with the box body is completed through the nut.
Further preferably, a nut groove is formed in the side wall of the box body at the outer side of the through hole, a nut is arranged in the nut groove, and an inner hexagonal hole is formed in the end of the fastening rod. The nut is placed in the nut groove, and only the inner hexagonal wrench is used for rotating the fastening rod to push the rock fixing plate.
Further preferably, the through holes on the side wall of the box body are provided with at least two rows and at least two columns, the height of the rock fixing plate is smaller than that of the box body, and the top parts of the two sides of the box body are horizontally provided with supporting plates. The supporting plate can place the box between the box baffles of both sides, make the box itself have no space of rocking, and the box lateral wall is equipped with a plurality of through-holes, a plurality of nut grooves, can adjust the position of fastening rod, nut, rock fixed plate according to the rock size that needs to be fixed, ensures that there is not the space of rocking at the inside rock of box. The height of the rock fixing plate is smaller than the depth of the box body, the rock fixing plate can be ensured to change along with the position of rock in the box body, a certain vertical movement range is provided, and meanwhile, the rock fixing plate is ensured not to extend out of the box body and collide with cutting teeth.
According to the invention, the cutting pick cutting assembly comprises a balance body, wherein one end of the balance body is provided with a cutting pick fixing plate, and the cutting pick is connected with the cutting pick fixing plate through a clamping ring; the other end of the balance body is provided with a pressure sensor which is connected with a cutting pick component propelling cylinder, and a signal acquisition interface is arranged on the pressure sensor. The pressure sensor can accurately measure the cutting force generated in the rock breaking process, and the external signal acquisition system can acquire the current signal generated by the pressure sensor through the signal acquisition interface.
Further preferably, the cutting pick fixing plate is a folded plate, one end of the folded plate is connected with the balance body through a bolt, the other end of the folded plate is connected with the cutting pick, and the bent part of the folded plate also plays a certain role in positioning with the balance body; one side of the pressure sensor is provided with a pull pressure rod which is hinged with the balance body.
Further preferably, two cutting assembly guide rails are further arranged between the box body baffles, balance rods are arranged on two sides of the balance body, radial bearings are arranged at the ends of the balance rods, and the radial bearings roll in the cutting assembly guide rails. The cutting assembly guide rail is fixed on the box baffle through the bolt, and when the cutting assembly guide rail fixed through the bolt bears the load of the cutting assembly, the cutting assembly guide rail can rotate slightly around the bolt, so that the impact load of the cutting assembly to the cutting assembly guide rail is buffered, the up-and-down fluctuation and vibration of the cutting assembly in the rock cutting process can be effectively resisted, the cutting action of the cutting assembly is smoother, and the stable movement of the cutting assembly in the rock cutting and breaking process is ensured. Meanwhile, the cutting force in the movement direction of the cutting pick, namely the normal phase cutting force, can be effectively measured.
Preferably, the rock fixing device is hinged with the box body pushing oil cylinder. Under the action of the box body pushing oil cylinder, the rock fixing device drives the rock to move on the box body guide rail, and the hinged connection can enable the rock fixing device to only bear the axial pushing force generated by the box body pushing oil cylinder and not bear the lateral force, so that the rock is stably pushed.
Preferably, the saw blade assembly propulsion oil cylinder is hinged with the saw blade assembly supporting frame. The saw blade assembly pushing oil cylinder can push the saw blade assembly supporting frame to move on the saw blade assembly guide rail, and the saw blade assembly pushing oil cylinder and the saw blade assembly supporting frame are connected in a hinged mode, so that the oil cylinder is ensured not to generate lateral force when pushing the supporting frame.
A test method using the diamond saw blade-cutting pick combined rock breaking test device comprises the following steps:
1. rock fixing process:
the box body pushing oil cylinder stretches to push the rock fixing device to move towards the saw blade assembly supporting frame along the box body guide rail, and when the rock fixing device is positioned between the box body baffle and the saw blade assembly supporting frame, the box body pushing oil cylinder stops working;
placing rock in the box body, rotating the fastening rod by using an inner hexagonal wrench to enable the fastening rod to move towards the inner direction of the box body, pushing the rock fixing plates to move towards the inner direction of the box body, and clamping the rock by the rock fixing plates at two sides;
2. control of the cutting depth of the rock saw blade:
the position of the rock fixing device is adjusted through the extension or shortening of the box body pushing cylinder, so that the rock is right below the saw blade group;
the saw blade pushing oil cylinder pushes the saw blade group to move downwards, and simultaneously, the motor is started to drive the saw blade group to rotate; along with the pushing of the saw blade pushing oil cylinder, the saw blade group is close to and starts to cut the rock, and the depth of the saw blade for cutting the rock is controlled by controlling the elongation of the saw blade pushing oil cylinder; the saw blade pushing oil cylinder drives the saw blade group to lift, and the motor stops rotating;
3. and (3) controlling the cutting kerf length of the rock saw blade:
in the process of cutting the rock by the saw blade group, the box body pushing oil cylinder can drive the rock fixing device to move on the box body guide rail, and after the required rock lancing length is obtained, the box body pushing oil cylinder stops acting, and the saw blade pushing oil cylinder drives the saw blade group to lift up, so that the motor stops rotating;
4. controlling the cutting joint spacing of the rock saw blade:
the pitch of the slits of the saw blade sets for cutting rock depends on the length of the spacer sleeve; the sleeve group and the middle shaft end cover are disassembled, the spacing between saw blades in the saw blade group can be changed by replacing the spacing sleeve with proper length, the required kerf spacing is obtained by cutting, and the designated rock cutting thickness is obtained by adjusting the spacing distance between the sleeve and the saw blade group;
or alternatively, the first and second heat exchangers may be,
the relative position between the saw blade group and the rock can be changed by moving the saw blade component supporting frame through the saw blade component pushing oil cylinder: after the saw blade group saw cuts the rock to form a kerf with a certain distance, the saw blade pushing oil cylinder drives the saw blade group to lift, the saw blade group supporting frame and the saw blade group are adjusted to be in relative positions with the rock through the expansion and contraction of the saw blade group pushing oil cylinder, and the saw blade pushing oil cylinder drives the diamond saw blade group to descend for cutting again, so that the kerf distance can be changed; after cutting is completed, the saw blade pushing oil cylinder drives the saw blade group to rise again, and the motor is turned off.
5. Acquisition of cutting force:
rock cut by the saw blade group moves into the box baffle through the shrinkage action of the box pushing oil cylinder, the cutting pick cutting assembly moves along the direction of the cutting assembly guide rail under the drive of the cutting pick assembly pushing oil cylinder, the cutting pick impacts and breaks the rock with the cutting slit, the reaction force of the rock to the cutting pick enables the pull pressure rod to compress the pressure sensor, and the deformation of the pressure sensor is output through the signal acquisition interface through a current signal, so that test acquisition is completed.
The invention has the beneficial effects that:
1. the invention designs a diamond saw blade-cutting tooth combined rock breaking test device which can finish the breaking test research of rock.
2. The saw blade component of the test device provided by the invention consists of a plurality of saw blades, and can saw a rock body with a plurality of saw cuts at the same time.
3. The test device disclosed by the invention can assist the saw blade assembly to saw the rock through the feeding distance of the sawing propulsion oil cylinder, so that different sawing kerf depths are formed.
4. The test device disclosed by the invention can assist the saw blade assembly to saw the rock through the feeding distance of the rock fixing oil cylinder, so that different sawing joint lengths are formed.
5. The test device can assist the saw blade assembly to saw the rock through the action of the slotted sleeve, and can form different sawing joint intervals through changing the width of the interval sleeve so as to form rock platy bodies with different thicknesses.
6. The test device can drive the saw blade assembly support frame to move through the action of the saw blade assembly support frame pushing cylinder to assist the saw blade assembly to saw the rock, so that different sawing joint intervals are formed, and rock platy bodies with different thicknesses are formed.
7. The saw blade component support frame of the test device is positioned by adopting the support frame positioning device, so that the saw blade component support frame can be ensured to stably and smoothly move on the guide rail, and the phenomena of toppling and the like can not occur.
8. The test device provided by the invention is provided with the rock clamping assembly, the assembly can fix rocks with different sizes, and the rocks can be fixed at different heights through the action of the backing plate.
9. According to the test device, through fixing rocks with different heights, the cutting pick cutting assembly can be assisted to complete cutting and crushing of plate-shaped rock bodies with different cutting depths.
10. The cutting pick cutting assembly of the test device provided by the invention is provided with the bearing type bending moment resisting structure, and the structure has the advantages that (1) the bending moment generated by cutting pick cutting force on the cutting pick cutting assembly structure can be counteracted, and (2) the cutting pick can move linearly and stably in the pushing process of the cutting pick pushing cylinder.
11. The cutting pick cutting assembly of the test device provided by the invention is provided with the pressure sensor, and can accurately measure the normal cutting force in the process of breaking rock by the cutting pick with the aid of the bearing type bending moment resisting structure.
12. The structure of the cutting head for cutting pick installation, which is related to the invention, is a cutting pick in combination with a saw blade to crush rock, and the size of the cutting head for cutting pick installation is easy to control. After the saw blade cuts the rock, the strength of the rock can be obviously reduced, and the plate-shaped rock body can be broken under the conditions of small volume and small power of the cutting head.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a diamond saw blade-cutting pick combined rock breaking test device;
FIG. 2 is a schematic diagram of the motor assembly of the diamond saw blade-pick combined rock breaking test device of the present invention;
FIG. 3 is a schematic view of a cutting assembly rail structure;
FIG. 4 is a schematic view of a pick cutting assembly;
FIG. 5 is a schematic view of the center shaft structure of the saw blade;
FIG. 6 is a schematic view of a bottom bracket end cap structure;
FIG. 7 is a schematic view of a saw blade configuration;
FIG. 8 is a schematic diagram of a gudgeon end cap construction;
FIG. 9 is a schematic diagram of a cylinder sleeve structure;
FIG. 10 is a schematic view of a sleeve assembly;
FIG. 11 is a schematic view of a support frame positioning device;
FIG. 12 is a perspective view of a rock fastening device;
FIG. 13 is a schematic top view of a rock fastening device;
FIG. 14 is a schematic side view of a rock fastening device;
wherein:
1-fixing a bottom plate; 2-a blade assembly thrust cylinder; 3-saw blade assembly guide rail; 4-a blade assembly support frame; 5-a saw blade center shaft; 6-sleeve group; 7-diamond saw blade group; 8-a saw blade pushing cylinder; 9-a bolt; 10-motor; 11-a support frame positioning device; 12-a pick cutting assembly; 13, a box baffle; 14-rock fixing means; 15-a box body pushing cylinder; 16-a cutting assembly rail; 17-a pick assembly thrust cylinder; 18, a box body guide rail; 19-a motor fixing plate; 20-a fixed plate guide groove; 21-a shaft head end cover and 22-a middle shaft end cover;
501-threaded rod, 502-spline, 503-shaft body, 504-journal, 505-spindle head, 506-journal, 507-shaft body, 508-spline;
6001-spline grooves, 6002-end grooved sleeves, 6003-spacer sleeves, 6004-positioning sleeves, 6005-coupling sleeves;
7001—saw blade spline grooves;
801-cylinder sleeve, 802-threaded hole, 803-hole;
1101-main body frame, 1102-through holes, 1103-support bars, 1104-radial bearings;
1201-pick, 1202-snap ring, 1203-bolt, 1204-pick fixing plate, 1205-balance body, 1206-balance bar, 1207-radial bearing, 1208-hinge pair, 1209-nut, 1210-nut, 1211-pull pressure bar, 1212-pressure sensor, 1213-threaded hole, 1214-signal acquisition interface;
1401-box, 1402-rock fastening plate, 1403-detent, 1404-fastening rod, 1405-hinge pair, 1406-support plate, 1407-internal hexagonal hole, 1408-nut, 1409-nut groove,
1601-through holes, 1602-guide slots;
2101-threaded bore, 2102-end cap inner diameter.
Detailed Description
The invention will now be further illustrated by way of example, but not by way of limitation, with reference to the accompanying drawings.
As shown in fig. 1-14.
Example 1:
a diamond saw blade-cutting pick combined rock breaking test device is shown in fig. 1, and comprises a fixed bottom plate 1, wherein a saw blade assembly and a box body assembly are arranged on the fixed bottom plate 1.
The saw blade assembly comprises a saw blade assembly guide rail 3 and a saw blade assembly pushing oil cylinder 2, a saw blade assembly support frame 4 is arranged on the saw blade assembly guide rail 3 in a sliding manner, one end of the saw blade assembly support frame 4 is connected with the saw blade assembly pushing oil cylinder 2, and the saw blade assembly pushing oil cylinder 2 is used for controlling the transverse displacement movement of the saw blade assembly support frame 4; the saw blade assembly supporting frame 4 is provided with a saw blade group 7 and a saw blade pushing oil cylinder 8, the saw blade group 7 is connected with the saw blade pushing oil cylinder 8 through a sleeve group 6, the saw blade pushing oil cylinder 8 is used for controlling vertical displacement movement of the saw blade group 7, one end of the sleeve group 6 is connected with a motor 10, the motor is used for controlling rotation of the sleeve to drive rotation of the saw blade, the saw blade group is pushed downwards under the action of the saw blade pushing oil cylinder, the saw blade group is controlled to rotate through the motor to cut rock, and the depth of rock lancing is determined by the telescopic quantity of the saw blade pushing oil cylinder.
The box assembly comprises a box guide rail 18, a rock fixing device 14 and a cutting pick cutting assembly 12, wherein the rock fixing device 14 is arranged on the box guide rail 18, the rock fixing device 14 is used for placing and fixing experimental rocks, one end of the rock fixing device 14 is provided with a box pushing oil cylinder 15, the fixed bottom plates 1 at two sides of the rock fixing device 14 are provided with box baffle plates 13, the cutting pick cutting assembly 12 is arranged between the box baffle plates 13, one end of the cutting pick cutting assembly 12 is provided with a cutting pick assembly pushing oil cylinder 17, and the cutting pick cutting assembly 12 is used for cutting broken rocks. The box body pushing oil cylinder drives the rock fixing device to horizontally move on the box body guide rail, and the saw blade group can cut to form different saw kerf lengths through the expansion and contraction of the box body pushing oil cylinder in the process of cutting the rock; after the saw blade group is cut, the box body pushing oil cylinder adjusts the rock fixing device to a proper position, and the pick assembly pushing oil cylinder drives the pick cutting assembly to cut and crush the rock in the rock fixing device.
The saw blade assembly support frame drives the saw blade group to move, so that the thickness of the platy rock mass formed by sawing according to the length of the sleeve can be further adjusted. The thickness of the plate-shaped rock body formed by the sleeve is fixed, and the cutting of the plate-shaped rock body with any thickness can be realized through double adjustment by moving the supporting frame of the saw blade assembly.
Example 2:
a diamond saw blade-cutting pick combined rock breaking test device is structurally characterized in that the number of saw blade propelling cylinders 8 is two as in the embodiment 1, and one saw blade propelling cylinder is connected with a saw blade group through a sleeve group, and the other saw blade propelling cylinder is connected with a motor as shown in fig. 1-2. The two cylinders need to be of the same specification, and the same oil pressure is given to realize synchronous propulsion of the motor and the saw blade group.
Example 3:
the diamond saw blade-pick combined rock breaking test device is structured as described in embodiment 2, except that the motor 10 is fixed to the motor fixing plate 19 by the bolts 9, the motor fixing plate 19 is connected to one end of the saw blade pushing cylinder 8, and as shown in fig. 2, the saw blade assembly support frame 4 is provided with a fixing plate guide groove 20, and the width of the fixing plate guide groove 20 is the same as the thickness of the motor fixing plate 19. When the saw blade propelling oil cylinder is propelled, the motor fixing plate vertically moves in the fixing plate guide groove, so that the stability of the movement of the motor fixing plate can be ensured.
Example 4:
the utility model provides a diamond saw bit-pick joint broken rock test device, its structure is as described in embodiment 1, and the difference is, sleeve group includes tip fluted sleeve 6002, spacing sleeve 6003, even axle sleeve 6005, as shown in fig. 10, is equipped with saw bit axis 5 in the sleeve group, is equipped with the spline on the saw bit axis 5, sleeve group inner wall is equipped with spline groove 6001, and the saw bit group includes eight saw bits, and the saw bit center is equipped with the through-hole, is equipped with saw bit spline groove 7001 on the through-hole, as shown in fig. 7.
The saw blade is arranged at intervals with an end part grooved sleeve, a spacing sleeve and a connecting shaft sleeve, and the connecting shaft sleeve 6005 is connected with the output shaft of the motor 10. The motor outputs rotary kinetic energy to drive the sleeve of the connecting shaft to rotate, and the spline grooves of the sleeve group are matched with the spline of the center shaft of the saw blade to enable the center shaft of the saw blade to rotate. The saw blade and the sleeve group are arranged at intervals, the length and the number of the interval sleeves can be changed according to actual needs, and the distance between the diamond saw blades is controlled.
Example 5:
the diamond saw blade-cutting pick combined rock breaking test device has the structure as in the embodiment 4, except that the saw blade center shaft 5 comprises a shaft head 505, a shaft neck 504 and a shaft body 503, the shaft body is provided with a spline 502, a sleeve group is in clearance fit with the shaft body, and the shaft head 505 is connected with a saw blade pushing oil cylinder 8 through an oil cylinder sleeve 801. The shaft head rotates freely in the cylinder sleeve, the saw blade pushes the cylinder sleeve to move vertically, and the saw blade center shaft rotates in the cylinder sleeve.
Example 6:
the structure of the diamond saw blade-cutting pick combined rock breaking test device is as in the embodiment 5, except that a shaft head 505 is arranged in the middle of a saw blade center shaft 5, and two sides of the shaft head 505 are sequentially provided with a shaft neck 504, a shaft neck 506, a shaft body 503 and a shaft body 507, as shown in fig. 5; the axle journal is provided with an axle head end cover 21, the axle head end cover 21 is provided with an end cover inner diameter 2102 which is excessively matched with the axle journal 504, and the two axle head end covers are connected with the oil cylinder sleeve 801 through respective threaded holes 2101 and 802 through bolts, as shown in fig. 8 and 9. The two shaft head end covers can further fix the cylinder sleeve.
Example 7:
the diamond saw blade-cutting pick combined rock breaking test device is structurally characterized in that as in embodiment 6, a threaded rod 501 is arranged at the end part of a shaft body 503 at one end of a saw blade center shaft 5, the threaded rod 501 is in threaded connection with a center shaft end cover 22, and as shown in fig. 5 and 6, the outer diameter of the center shaft end cover 22 is the same as the outer diameter of an end part grooved sleeve 6002. The middle shaft end cover is used for axially fastening the sleeve group and the saw blade group on the middle shaft of the saw blade, and nuts can be additionally arranged on the outer side of the middle shaft end cover for further fastening.
Example 8:
the diamond saw blade-cutting pick combined rock breaking test device is structurally characterized by comprising a sleeve group and a positioning sleeve 6004, wherein the sleeve group is further provided with the positioning sleeve 6004, the positioning sleeve 6004 is arranged between a spacing sleeve 6003 and a connecting shaft sleeve 6005, and the inner wall of the positioning sleeve is provided with spline grooves. The positioning sleeve is used for supplementing a gap between the coupling sleeve and the interval sleeve, and an elastic gasket can be further arranged between the coupling sleeve and the positioning sleeve.
Example 9:
the diamond saw blade-cutting pick combined rock breaking test device has the structure as in the embodiment 1, except that a supporting frame positioning device 11 is further arranged on the fixed bottom plate 1, as shown in fig. 11, the supporting frame positioning device 11 comprises a main body frame 1101, a through hole 1102 is arranged on the main body frame 1101, and the main body frame 1101 is connected with the fixed bottom plate 1 through a bolt; the side of the main body frame 1101 is provided with a radial bearing 1104, the radial bearing 1104 is connected with the side of the main body frame 1101 through a supporting rod 1103, and the saw blade assembly supporting frame 4 is arranged above the radial bearing 1104. The radial bearing is contacted with the saw blade assembly support frame, and when the saw blade assembly support frame moves on the saw blade assembly guide rail, the radial bearing can ensure that the saw blade assembly support frame is not inclined when being stabilized, and can bear smaller friction force in the moving process.
Example 10:
the diamond saw blade-cutting pick combined rock breaking test device is structured as described in embodiment 1, except that the rock fixing device 14 comprises a box 1401, as shown in fig. 12-14, a rock fixing plate 1402 is provided in the box 1401, a positioning groove 1403 is provided on the rock fixing plate 1402, a through hole is provided on a side wall of the box 1401, a fastening rod 1404 penetrates through the through hole and is embedded in the positioning groove 1403, the fastening rod 1404 is provided with an external thread, and the fastening rod 1404 is connected with a nut 1408 outside the box 1401. After the rock is put into, the fastening rod penetrates through the through hole and stretches into the positioning groove of the rock fixing plate, the rock fixing plate is pushed to fasten the rock, and then the fastening with the box body is completed through the nut.
Example 11:
the diamond saw blade-cutting pick combined rock breaking test device is structurally as described in embodiment 10, except that a nut groove 1409 is formed in the side wall of the box 1401 outside the through hole, a nut 1408 is arranged in the nut groove 1409, and an inner hexagonal hole 1407 is formed in the end of the fastening rod 1404, as shown in fig. 14. The nut is placed in the nut groove, and only the inner hexagonal wrench is used for rotating the fastening rod to push the rock fixing plate.
Example 12:
the diamond saw blade-cutting pick combined rock breaking test device is structurally characterized in that, as in embodiment 10, three rows and three columns of nine through holes are formed in the side wall of a box 1401, as shown in fig. 14, the height of a rock fixing plate 1402 is smaller than that of the box 1401, and supporting plates 1406 are horizontally arranged at the tops of two sides of the box. The supporting plate can place the box between the box baffles of both sides, make the box itself have no space of rocking, and the box lateral wall is equipped with a plurality of through-holes, a plurality of nut grooves, can adjust the position of fastening rod, nut, rock fixed plate according to the rock size that needs to be fixed, ensures that there is not the space of rocking at the inside rock of box. The height of the rock fixing plate is smaller than the depth of the box body, the rock fixing plate can be ensured to change along with the position of rock in the box body, a certain vertical movement range is provided, and meanwhile, the rock fixing plate is ensured not to extend out of the box body and collide with cutting teeth.
Example 13:
a diamond saw blade-cutting pick combined rock breaking test device is constructed as in embodiment 10, except that the cutting pick cutting assembly 12 comprises a balance body 1205, as shown in fig. 4, a cutting pick fixing plate 1204 is provided at one end of the balance body 1205, and the cutting pick 1201 is connected with the cutting pick fixing plate 1204 through a snap ring 1202; the other end of the balance body 1205 is provided with a pressure sensor 1212, the pressure sensor 1212 is connected with a cutting pick assembly pushing cylinder 17 through a threaded hole 1213 in a bolt way, and the pressure sensor 1212 is provided with a signal acquisition interface 1214. The pressure sensor can accurately measure the cutting force generated in the rock breaking process, and the external signal acquisition system can acquire the current signal generated by the pressure sensor through the signal acquisition interface.
Example 14:
a diamond saw blade-cutting pick combined rock breaking test device has the structure as in the embodiment 13, except that a cutting pick fixing plate 1204 is a folded plate, one end of the folded plate is connected with a balance body 1205 through a bolt 1203, the other end of the folded plate is connected with a cutting pick 1201, and a bending part of the folded plate also plays a certain positioning role with the balance body; one side of the pressure sensor is provided with a pull pressure rod which is hinged with the balance body.
Example 15:
the diamond saw blade-cutting pick combined rock breaking test device is structurally characterized in that two cutting assembly guide rails 16 are further arranged between the box body baffles 13, the cutting assembly guide rails are fixed on the box body baffles 13 through holes 1601, the cutting assembly guide rails are provided with guide grooves 1602, balance shafts 1206 are arranged on two sides of a balance body 1205, radial bearings 1207 are arranged at the ends of the balance shafts 1206, and the radial bearings 1207 roll in the guide grooves 1602 of the cutting assembly guide rails 16 as shown in fig. 3. The length L of the guide groove is the interval between the box baffles, the width B of the guide groove is larger than the thickness of the radial bearing 1207, and the height H of the guide groove is the same as the large diameter of the radial bearing 1207. The cutting assembly guide rail is fixed on the box baffle through the bolt, and when the cutting assembly guide rail fixed through the bolt bears the load of the cutting assembly, the cutting assembly guide rail can rotate slightly around the bolt, so that the impact load of the cutting assembly to the cutting assembly guide rail is buffered, the up-and-down fluctuation and vibration of the cutting assembly in the rock cutting process can be effectively resisted, the cutting action of the cutting assembly is smoother, and the stable movement of the cutting assembly in the rock cutting and breaking process is ensured. Meanwhile, the cutting force in the movement direction of the cutting pick, namely the normal phase cutting force, can be effectively measured.
Example 16:
a diamond saw blade-cutting pick combined rock breaking test device has the structure as in the embodiment 1, except that the rock fixing device is hinged with the box body pushing cylinder through a hinge pair 1405. Under the action of the box body pushing oil cylinder, the rock fixing device drives the rock to move on the box body guide rail, and the hinged connection can enable the rock fixing device to only bear the axial pushing force generated by the box body pushing oil cylinder and not bear the lateral force, so that the rock is stably pushed.
Example 17:
a diamond saw blade-cutting pick combined rock breaking test device is structurally characterized in that a saw blade assembly pushing oil cylinder is hinged with a saw blade assembly supporting frame according to the embodiment 1. The saw blade assembly pushing oil cylinder can push the saw blade assembly supporting frame to move on the saw blade assembly guide rail, and the saw blade assembly pushing oil cylinder and the saw blade assembly supporting frame are connected in a hinged mode, so that the oil cylinder is ensured not to generate lateral force when pushing the supporting frame.
Example 18:
the test method of the diamond saw blade-cutting pick combined rock breaking test device has the structure as in example 15, and comprises the following steps:
1. rock fixing process:
the box body pushing oil cylinder stretches to push the rock fixing device to move towards the saw blade assembly supporting frame along the box body guide rail, and when the rock fixing device is positioned between the box body baffle and the saw blade assembly supporting frame, the box body pushing oil cylinder stops working;
placing rock in the box body, rotating the fastening rod by using an inner hexagonal wrench to enable the fastening rod to move towards the inner direction of the box body, pushing the rock fixing plates to move towards the inner direction of the box body, and clamping the rock by the rock fixing plates at two sides;
2. control of the cutting depth of the rock saw blade:
the position of the rock fixing device is adjusted through the extension or shortening of the box body pushing cylinder, so that the rock is right below the saw blade group;
the saw blade pushing oil cylinder pushes the saw blade group to move downwards, and simultaneously, the motor is started to drive the saw blade group to rotate; along with the pushing of the saw blade pushing oil cylinder, the saw blade group is close to and starts to cut the rock, and the depth of the saw blade for cutting the rock is controlled by controlling the elongation of the saw blade pushing oil cylinder; the saw blade pushing oil cylinder drives the saw blade group to lift, and the motor stops rotating;
3. and (3) controlling the cutting kerf length of the rock saw blade:
in the process of cutting the rock by the saw blade group, the box body pushing oil cylinder can drive the rock fixing device to move on the box body guide rail, and after the required rock lancing length is obtained, the box body pushing oil cylinder stops acting, and the saw blade pushing oil cylinder drives the saw blade group to lift up, so that the motor stops rotating;
4. controlling the cutting joint spacing of the rock saw blade:
the pitch of the slits of the saw blade sets for cutting rock depends on the length of the spacer sleeve; the sleeve group and the middle shaft end cover are disassembled, the spacing between saw blades in the saw blade group can be changed by replacing the spacing sleeve with proper length, the required kerf spacing is obtained by cutting, and the designated rock cutting thickness is obtained by adjusting the spacing distance between the sleeve and the saw blade group;
5. acquisition of cutting force:
rock cut by the saw blade group moves into the box baffle through the shrinkage action of the box pushing oil cylinder, the cutting pick cutting assembly moves along the direction of the cutting assembly guide rail under the drive of the cutting pick assembly pushing oil cylinder, the cutting pick impacts and breaks the rock with the cutting slit, the reaction force of the rock to the cutting pick enables the pull pressure rod to compress the pressure sensor, and the deformation of the pressure sensor is output through the signal acquisition interface through a current signal, so that test acquisition is completed.
Example 19:
a method of testing a diamond blade-pick combined crushed rock test apparatus, the method comprising the steps of example 18, except that in the rock blade cutting kerf spacing control, the relative position between the blade set and the rock is changed by moving the blade assembly support frame via the blade assembly thrust cylinder: after the saw blade group saw cuts the rock to form a kerf with a certain distance, the saw blade pushing oil cylinder drives the saw blade group to lift, the saw blade group supporting frame and the saw blade group are adjusted to be in relative positions with the rock through the expansion and contraction of the saw blade group pushing oil cylinder, and the saw blade pushing oil cylinder drives the diamond saw blade group to descend for cutting again, so that the kerf distance can be changed; after cutting is completed, the saw blade pushing oil cylinder drives the saw blade group to rise again, and the motor is turned off.
Claims (6)
1. The test method of the diamond saw blade-cutting tooth combined rock crushing test device is characterized in that the diamond saw blade-cutting tooth combined rock crushing test device comprises a fixed bottom plate, wherein a saw blade assembly and a box body assembly are arranged on the fixed bottom plate;
the saw blade assembly comprises a saw blade assembly guide rail and a saw blade assembly pushing oil cylinder, a saw blade assembly support frame is arranged on the saw blade assembly guide rail in a sliding mode, one end of the saw blade assembly support frame is connected with the saw blade assembly pushing oil cylinder, and the saw blade assembly pushing oil cylinder is used for controlling transverse displacement movement of the saw blade assembly support frame; the saw blade assembly supporting frame is provided with a saw blade group and a saw blade propelling oil cylinder, the saw blade group is connected with the saw blade propelling oil cylinder through a sleeve group, the saw blade propelling oil cylinder is used for controlling the vertical displacement movement of the saw blade group, and one end of the sleeve group is connected with a motor;
the box body assembly comprises a box body guide rail, a rock fixing device and a cutting pick cutting assembly, wherein the rock fixing device is arranged on the box body guide rail and is used for placing and fixing experimental rocks, one end of the rock fixing device is provided with a box body pushing cylinder, fixed bottom plates on two sides of the rock fixing device are provided with box body baffles, the cutting pick cutting assembly is arranged between the box body baffles, one end of the cutting pick cutting assembly is provided with a cutting pick assembly pushing cylinder, and the cutting pick cutting assembly is used for cutting and crushing the rocks;
the rock fixing device comprises a box body, a rock fixing plate is arranged in the box body, a positioning groove is formed in the rock fixing plate, a through hole is formed in the side wall of the box body, a fastening rod penetrates through the through hole and is embedded into the positioning groove, an external thread is arranged on the fastening rod, and the fastening rod is connected with a nut on the outer side of the box body; a nut groove is formed in the side wall of the box body at the outer side of the through hole, a nut is arranged in the nut groove, and an inner hexagonal hole is formed in the end of the fastening rod; the through holes on the side wall of the box body are provided with at least two rows and at least two columns, the height of the rock fixing plate is smaller than that of the box body, and the top parts of the two sides of the box body are horizontally provided with supporting plates;
the cutting pick cutting assembly comprises a balance body, one end of the balance body is provided with a cutting pick fixing plate, and the cutting pick is connected with the cutting pick fixing plate through a clamping ring; the other end of the balance body is provided with a pressure sensor which is connected with a cutting pick component propulsion oil cylinder, and a signal acquisition interface is arranged on the pressure sensor; the cutting pick fixing plate is a folded plate, one end of the folded plate is connected with the balance body through a bolt, and the other end of the folded plate is connected with the cutting pick; a pull pressure rod is arranged at one side of the pressure sensor and is hinged with the balance body;
two cutting assembly guide rails are arranged between the box body baffles, balance rods are arranged on two sides of the balance body, radial bearings are arranged at the ends of the balance rods, and the radial bearings roll in the cutting assembly guide rails;
the test method comprises the following steps:
1. rock fixing process:
the box body pushing oil cylinder stretches to push the rock fixing device to move towards the saw blade assembly supporting frame along the box body guide rail, and when the rock fixing device is positioned between the box body baffle and the saw blade assembly supporting frame, the box body pushing oil cylinder stops working;
placing rock in the box body, rotating the fastening rod by using an inner hexagonal wrench to enable the fastening rod to move towards the inner direction of the box body, pushing the rock fixing plates to move towards the inner direction of the box body, and clamping the rock by the rock fixing plates at two sides;
2. control of the cutting depth of the rock saw blade:
the position of the rock fixing device is adjusted through the extension or shortening of the box body pushing cylinder, so that the rock is right below the saw blade group;
the saw blade pushing oil cylinder pushes the saw blade group to move downwards, and simultaneously, the motor is started to drive the saw blade group to rotate; along with the pushing of the saw blade pushing oil cylinder, the saw blade group is close to and starts to cut the rock, and the depth of the saw blade for cutting the rock is controlled by controlling the elongation of the saw blade pushing oil cylinder; the saw blade pushing oil cylinder drives the saw blade group to lift, and the motor stops rotating;
3. and (3) controlling the cutting kerf length of the rock saw blade:
in the process of cutting the rock by the saw blade group, the box body pushing oil cylinder can drive the rock fixing device to move on the box body guide rail, and after the required rock lancing length is obtained, the box body pushing oil cylinder stops acting, and the saw blade pushing oil cylinder drives the saw blade group to lift up, so that the motor stops rotating;
4. controlling the cutting joint spacing of the rock saw blade:
obtaining a specified rock cutting thickness by adjusting the spacing distance between the same set of sleeves and the saw blade set;
or alternatively, the first and second heat exchangers may be,
after the saw blade group saw cuts the rock to form a kerf with a certain distance, the saw blade pushing oil cylinder drives the saw blade group to lift, the relative positions of the saw blade component support frame and the saw blade group and the rock are adjusted through the expansion and the contraction of the saw blade component pushing oil cylinder, and the saw blade pushing oil cylinder drives the diamond saw blade group to descend for cutting again, so that the kerf distance is changed; after cutting is completed, the saw blade pushing oil cylinder drives the saw blade group to rise again, and the motor is turned off;
5. acquisition of cutting force:
rock cut by the saw blade group moves into the box baffle through the shrinkage action of the box pushing oil cylinder, the cutting pick cutting assembly moves along the direction of the cutting assembly guide rail under the drive of the cutting pick assembly pushing oil cylinder, the cutting pick impacts and breaks the rock with the cutting slit, the reaction force of the rock to the cutting pick enables the pull pressure rod to compress the pressure sensor, and the deformation of the pressure sensor is output through the signal acquisition interface through a current signal, so that test acquisition is completed.
2. The method for testing a combined diamond blade-pick rock breaking test device according to claim 1, wherein the number of the blade pushing cylinders is two, one blade pushing cylinder is connected with the blade group through the sleeve group, and the other blade pushing cylinder is connected with the motor;
the motor is connected with one end of the saw blade propelling cylinder through a motor fixing plate, a fixing plate guide groove is formed in the saw blade assembly support frame, and the width of the fixing plate guide groove is the same as the thickness of the motor fixing plate.
3. The test method of the diamond saw blade-cutting pick combined rock breaking test device according to claim 1, wherein the sleeve group comprises a sleeve with a grooved end, a spacing sleeve and a connecting shaft sleeve, a saw blade center shaft is arranged in the sleeve group, a spline is arranged on the saw blade center shaft, a spline groove is arranged on the inner wall of the sleeve group, the saw blade group comprises at least two saw blades, a through hole is arranged in the center of each saw blade, and a saw blade spline groove is arranged on the through hole;
the saw blade is arranged at intervals with the sleeve with the groove at the end part, the interval sleeve and the connecting shaft sleeve, and the connecting shaft sleeve is connected with the output shaft of the motor;
the saw blade center shaft comprises a shaft head, a shaft neck and a shaft body, a spline is arranged on the shaft body, a sleeve group is in clearance fit with the shaft body, and the shaft head is connected with a saw blade propelling oil cylinder through an oil cylinder sleeve.
4. The test method of the diamond saw blade-cutting pick combined rock breaking test device according to claim 3, wherein the shaft head is arranged in the middle of the center shaft of the saw blade, and the shaft necks and the shaft bodies are sequentially arranged on two sides of the shaft head; the shaft journal is provided with shaft head end covers, and the two shaft head end covers are connected with the cylinder sleeve through threaded holes in a bolt manner;
the end part of the shaft body at one end of the saw blade center shaft is provided with a threaded rod which is in threaded connection with a center shaft end cover, and the outer diameter of the center shaft end cover is the same as the outer diameter of the sleeve with the end part provided with the groove;
the sleeve group also comprises a positioning sleeve, the positioning sleeve is arranged between the interval sleeve and the connecting shaft sleeve, and the inner wall of the positioning sleeve is provided with spline grooves.
5. The test method of the diamond saw blade-cutting pick combined broken rock test device according to claim 1, wherein the fixing bottom plate is further provided with a supporting frame positioning device, the supporting frame positioning device comprises a main body frame, the main body frame is provided with a through hole, and the main body frame is connected with the fixing bottom plate through a bolt; the side of the main body frame is provided with a radial bearing, the radial bearing is connected with the side of the main body frame through a supporting rod, and the saw blade component supporting frame is arranged above the radial bearing.
6. The method for testing a combined diamond saw blade and cutting pick rock breaking test device according to claim 1, wherein the rock fixing device is hinged with the box body pushing cylinder; the saw blade component propelling oil cylinder is hinged with the saw blade component supporting frame.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910351078.0A CN109975056B (en) | 2019-04-28 | 2019-04-28 | Diamond saw blade-cutting pick combined rock breaking test device and test method thereof |
| PCT/CN2019/127912 WO2020220703A1 (en) | 2019-04-28 | 2019-12-24 | Diamond saw blade-pick combined rock breaking test device and test method therefor |
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| CN201910351078.0A CN109975056B (en) | 2019-04-28 | 2019-04-28 | Diamond saw blade-cutting pick combined rock breaking test device and test method thereof |
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| CN109975056B (en) * | 2019-04-28 | 2024-02-23 | 山东科技大学 | Diamond saw blade-cutting pick combined rock breaking test device and test method thereof |
| GB201918542D0 (en) * | 2019-12-16 | 2020-01-29 | Diona Construction Ltd | Method and apparatus for forming a trench for cable installation |
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| CN109975056A (en) | 2019-07-05 |
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