CN110987640A - Cutting performance test experiment system - Google Patents
Cutting performance test experiment system Download PDFInfo
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- CN110987640A CN110987640A CN201911296075.8A CN201911296075A CN110987640A CN 110987640 A CN110987640 A CN 110987640A CN 201911296075 A CN201911296075 A CN 201911296075A CN 110987640 A CN110987640 A CN 110987640A
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- 238000005520 cutting process Methods 0.000 title claims abstract description 127
- 238000002474 experimental method Methods 0.000 title claims abstract description 53
- 238000011056 performance test Methods 0.000 title claims abstract description 14
- 239000003245 coal Substances 0.000 claims abstract description 100
- 239000011435 rock Substances 0.000 claims abstract description 68
- 238000004088 simulation Methods 0.000 claims abstract description 10
- 230000001105 regulatory effect Effects 0.000 claims description 101
- 230000000694 effects Effects 0.000 claims description 21
- 238000012360 testing method Methods 0.000 claims description 12
- 238000003466 welding Methods 0.000 claims description 6
- 230000009471 action Effects 0.000 claims description 3
- 238000013519 translation Methods 0.000 claims description 3
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000005065 mining Methods 0.000 description 10
- 230000036346 tooth eruption Effects 0.000 description 7
- 230000008859 change Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 208000002697 Tooth Abrasion Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002817 coal dust Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- -1 fire Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C35/00—Details of, or accessories for, machines for slitting or completely freeing the mineral from the seam, not provided for in groups E21C25/00 - E21C33/00, E21C37/00 or E21C39/00
- E21C35/18—Mining picks; Holders therefor
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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Abstract
The invention relates to the field of performance test of coal mine mechanical equipment, in particular to a cutting performance test experimental system. The experimental system comprises the following parts: the device comprises a movable experiment bench, a coal rock simulation unit, a fixed frame, a mine pressure adjusting device, a piston, a hydraulic pump, a hydraulic cylinder and a data acquisition device. The cutting device is installed above the movable experiment bench, the simulated coal rock is installed inside the simulated coal wall fixing frame, the mine pressure adjusting device is connected with the simulated coal wall fixing frame through threads, and the piston is hinged with the simulated coal wall fixing frame. The cutting pick can simulate the stress condition of cutting picks under different traction speeds, different ore pressures, different coal and rock hardness and wedging angles. The invention has simple principle, skillful and reasonable structure and certain economic benefit.
Description
Technical Field
The invention relates to the technical field of underground mining equipment, in particular to a cutting performance test experiment system.
Background
Coal is a basic resource and energy in China, and in 2018, the coal yield in China is 36.83 hundred million tons, which accounts for about 70 percent of the total primary energy production; the proportion of coal consumption in China to primary energy consumption is 65%, and coal is still an important guarantee for national economic development. According to expert prediction, the coal capacity is 35 ten thousand tons in 2050 and the demand is 35-40 ten thousand tons. China enters a middle income 'trap' stage, the population proportion of the working age is gradually reduced, the labor cost is rapidly increased, and the population dividend is weakened. With the improvement of living standard of people and the reduction of willingness to engage in high-risk and high-intensity physical labor, people generally have strong demands for improving labor intensity and labor environment. Five natural disasters of water, fire, gas, coal dust and a roof exist on the fully mechanized coal mining face, and the life safety and the occupational health of workers are threatened all the time. Therefore, coal mine workers are liberated from dangerous, severe and noisy working environments, equipment is used for replacing the workers to carry out coal mining, and direct reduction of the number of personnel on a coal face is an important means for reducing casualties and guaranteeing safety and is urgent need for coal mine safety production. The reliable work of underground coal mining equipment is one of the basic guarantees for intelligent coal mining. The cutting teeth are used as parts of the coal mining machine which are in direct contact with coal rocks, and the stress condition of the cutting teeth directly determines the working reliability of the coal mining machine. Due to contact friction, picks are subject to significant wear during operation, particularly when the pick contacts rock. On one hand, the cutting tooth replacement improves the equipment cost of coal mining, and on the other hand, the efficiency of coal mining is reduced, so that the cutting tooth abrasion can seriously reduce the economic benefit of coal mining. The abrasion of the cutting pick is closely related to the stress of the cutting pick, and the stress conditions of the cutting pick have great difference under different traction speeds, different mine pressures, different coal and rock hardness and wedge angles, so that the research on the mechanical behavior of the cutting pick under different parameters is very necessary.
Disclosure of Invention
The invention aims to provide a cutting performance test experiment system which can simulate a cutting pick to cut coal rock, realize cutting of coal rock under different cutting picks, different wedging angles, different cutting speeds and different ore pressures, and synchronously measure cutting force.
The technical scheme adopted by the invention for solving the technical problems is as follows: a cutting performance test experiment system is composed of the following parts: the device comprises a movable experiment bench, a coal rock simulation unit, a fixed frame, a mine pressure adjusting device, a piston, a hydraulic pump, a hydraulic cylinder and a data acquisition device. The cutting device is installed above the movable experiment bench, the simulated coal rock is installed inside the simulated coal wall fixing frame, the mine pressure adjusting device is connected with the simulated coal wall fixing frame through threads, and the piston is hinged with the simulated coal wall fixing frame.
The simulated coal rock unit consists of simulated coal rocks, two coal rock frame side plates and a coal rock frame bottom plate. The two coal rock frame side plates are respectively and vertically connected with the coal rock frame bottom plate in a welding mode. The simulated coal rock is a cuboid and is placed in a cuboid opening frame consisting of two coal rock frame side plates and a coal rock frame bottom plate.
The movable experiment bench consists of a rack body, a slide rail, a cutting device, a locking nut and a bolt. The frame body bottom has two type of falling T structures, and two type of falling T structures symmetric distribution. The cross section of the sliding rail is provided with two inverted T-shaped grooves which are symmetrically distributed. The bottom inverted T-shaped structure of the movable experiment table frame is arranged in an inverted T-shaped slide rail and slides along the direction vertical to the inverted T-shaped groove. The bottom of the movable experiment table frame is provided with a U-shaped hole which is used for assembling and disassembling a bolt in the direction vertical to the inverted T-shaped structure.
The cutting pick holder appearance is the cylinder, and four cutting pick toothholder axes slope in the cutting pick holder axis, install on the cylindrical surface of cutting pick holder, along equipartition all around, but inclination is different, and the connection mode of cutting pick toothholder and cutting pick holder is the welding. The cutting pick holder cutting pick and the force sensor are arranged in the cutting pick holder.
The cutting device comprises a cutting tooth frame and a plurality of force measuring units. The force measuring unit consists of a cutting tooth holder, a force measuring sensor, a cutting tooth and a cutting tooth mounting sleeve. Each force measuring unit and the axis of the cutting pick holder form different angles, so that when the cutting pick holder rotates for a certain angle, other force measuring units can be used for cutting coal rocks, and the angle between the cutting pick on the force measuring unit and the wedged coal rocks is changed. Therefore, cutting experiments of wedging different cutting teeth into coal rocks by a corner wedge are carried out.
The cutting device is installed in activity experiment bench top, and activity experiment bench lower surface has the ladder through-hole structure, and the pick holder center has the through-hole structure, and the bolt links together activity experiment bench and pick holder through activity experiment bench lower surface ladder through-hole and pick holder central through-hole, locks through lock nut simultaneously. When the cutting teeth with different wedge-in angles need to be tested, the locking nut is loosened, the cutting tooth frame rotates for a certain angle, and the cutting tooth with the other wedge-in angle cuts the coal rock.
The pneumatic cylinder is articulated with activity experiment rack side, when the pneumatic cylinder piston was flexible, promotes the pneumatic cylinder and removes, makes activity experiment rack slide along falling T type groove, through the control pneumatic cylinder velocity of flow, alright control activity experiment rack's translation rate to simulate different traction speed.
When the movable experiment bench slides along the inverted T-shaped groove, the cutting device is driven to horizontally move, when the cutting tooth moves to the position of the simulated coal rock, the cutting tooth begins to cut the coal rock, the force transducer in the cutting tooth holder is under the action of external force, test data are input into the data acquisition system, and one-time cutting performance test is completed. Meanwhile, the experiment system can simulate coal rocks with different hardness by replacing the movable coal wall.
The mine pressure adjusting device comprises a pressure adjusting movable plate, a pressure adjusting wrench, a pressure adjusting screw, a pressure adjusting connecting rod I, a pressure adjusting connecting rod II, a pressure adjusting connecting rod III, a pressure adjusting connecting rod IV, a pressure adjusting connecting rod V, a pressure adjusting connecting rod VI, a side fixing plate, a bolt I and a nut. The side fixing plate is installed in the fixed frame outside, contacts with fixed frame side face, through a plurality of bolted connection, pin location. The side fixed plate appearance is the cuboid, has a screw hole in the middle of it, and the pressure regulating screw rod closes with the side fixed plate screw hole soon, and the pressure regulating spanner is a cylinder type structure, and the pressure regulating screw rod appearance is a cylinder, and the middle part has the external screw thread, and its one side outer cylindrical surface has a cylinder hole, and this hole axis intersects with pressure regulating screw rod axis is perpendicular, and the pressure regulating spanner is installed at the pressure regulating screw rod cylinder downtheholely, rotates the pressure regulating spanner, and the pressure regulating screw rod just along self axis horizontal migration. The pressure regulating screw rod is connected with the pressure regulating connecting rod six through threads, the other end of the pressure regulating connecting rod six is hinged with the pressure regulating connecting rod I, the pressure regulating connecting rod III and the pressure regulating connecting rod II respectively, one side of the pressure regulating connecting rod III is hinged with the pressure regulating connecting rod I and the pressure regulating connecting rod II, and the other side of the pressure regulating connecting rod III is hinged with the pressure regulating connecting rod IV and the pressure regulating connecting rod V. The first pressure regulating connecting rod, the second pressure regulating connecting rod, the third pressure regulating connecting rod, the fourth pressure regulating connecting rod and the fifth pressure regulating connecting rod are all cylinders. The second pressure regulating connecting rod and the fourth pressure regulating connecting rod are connected with the pressure regulating movable plate. When the pressure regulating screw rod is rotated, the pressure regulating movable plate moves downwards to change the pressure on the coal wall, so that different mine pressures can be simulated.
The simulated coal wall fixing frame is of a welded structure and comprises two fixing frame left side plates, a fixing frame right side plate, a fixing frame bottom plate, a fixing frame top plate and a fixing frame back plate. The simulated coal rock is arranged in the simulated coal rock fixing frame, and when the simulated coal rock with different hardness needs to be simulated, the simulated coal rock unit can be replaced to realize the simulation.
The invention has the advantages that: (1) the process of cutting coal by a cutting pick can be simulated really, and a single-cutting-pick cutting experiment is carried out; (2) the cutting experiment of different cutting teeth can be carried out, the wedge entry angle, the traction speed and the mine pressure of the cutting teeth can be adjusted, and the coal rocks with different hardness can be cut; (3) can discern the coal petrography demarcation through the change of analysis pick power. The invention is applied to the underground, and can solve the technical problem of coal rock boundary identification, thereby having certain economic benefit.
Drawings
Fig. 1 is a front view of a cutting performance test experiment system according to the present invention, fig. 2 is a top view of the cutting performance test experiment system according to the present invention, fig. 3 is a front view of a movable experiment table of the present invention, fig. 4 is a top view of the movable experiment table of the present invention, fig. 5 is a left view of the movable experiment table of the present invention, fig. 6 is a cross-sectional view of the movable experiment table at a-a position of the present invention, and fig. 7 is a structure diagram of a cutting pick holder. The coal rock simulation device comprises a fixed frame left side plate 1, a simulated coal rock 2, a pressure regulating connecting rod five 3, a pressure regulating connecting rod four 4, a fixed frame top plate 5, a pressure regulating connecting rod three 6, a pressure regulating movable plate 7, a pressure regulating connecting rod one 8, a pressure regulating connecting rod six 9, a nut 10, a bolt one 11, a side fixing plate 12, a pressure regulating screw 13, a pressure regulating wrench 14, a coal rock frame side plate 15, a fixed frame right side plate 16, a pressure regulating connecting rod two 17, a fixed frame bottom plate 18, a frame body 19, a slide rail 20, a locking nut 21, a bolt two 23, a cutting pick frame 24, an inverted T-shaped groove structure 25, a cutting pick holder 26, a cutting pick mounting sleeve 27, a force measuring sensor 28 and a coal rock frame bottom plate 29. 30 is a hydraulic pump, 31 is a piston, 32 is a hydraulic cylinder, 33 is a data acquisition system, 40 is a U-shaped groove, and 41 is a fixed frame back plate.
Detailed Description
A cutting performance test experiment system is composed of the following parts: the movable experiment bench comprises a simulation coal rock unit, a fixed frame, a mine pressure adjusting device, a piston 31, a hydraulic pump 30, a hydraulic cylinder 32 and a data acquisition device 33, wherein the simulation coal rock unit 2 is installed inside the fixed frame, the mine pressure adjusting device is connected with the fixed frame through threaded connection, and the piston 31 is hinged with a simulation coal wall fixing frame.
The simulated coal rock unit consists of a simulated coal rock 2, two coal rock frame side plates 15 and a coal rock frame bottom plate 29. The two coal rock frame side plates 15 are respectively and vertically connected with the coal rock frame bottom plate 29 in a welding mode. The simulated coal rock 2 is a cuboid and is placed in a cuboid opening frame consisting of two coal rock frame side plates 15 and a coal rock frame bottom plate 29.
The movable experiment bench consists of a frame body 19, a slide rail 20, a cutting device, a locking nut 21 and a bolt 22. The bottom of the frame body 19 is provided with two inverted T-shaped structures 24, and the two inverted T-shaped structures 24 are symmetrically distributed. The cross section of the slide rail 19 is provided with two inverted T-shaped grooves, and the two inverted T-shaped grooves are symmetrically distributed. The bottom inverted T-shaped structure of the movable experiment table frame is arranged in an inverted T shape of the slide rail 20 and slides along the direction vertical to the inverted T-shaped groove. The bottom of the movable experiment table frame is provided with a U-shaped groove 40 in the direction vertical to the inverted T-shaped structure, and the U-shaped groove is used for assembling and disassembling the first bolt 11.
The cutting device comprises a cutting tooth frame 23 and a plurality of force measuring units. The load cell consists of a cutting pick holder 26, a load cell 28, a cutting pick 25 and a cutting pick mounting sleeve 27. Each force measuring unit forms different angles with the axis of the cutting pick holder 23, so that when the cutting pick holder 23 rotates for a certain angle, other force measuring units can be used for cutting coal rocks, and the angles of cutting picks on the force measuring units and wedged coal rocks are changed. Therefore, cutting experiments of wedging different cutting teeth into coal rocks by a corner wedge are carried out.
The cutting device is installed in activity experiment bench body 19 top, and activity experiment bench lower surface has the ladder through-hole structure, and the pick frame 23 center has the through-hole structure, and bolt two 22 links together activity experiment bench and pick frame 23 through activity experiment bench lower surface ladder through-hole and pick frame 23 central through-hole, locks through lock nut 21 simultaneously. When picks with different wedging angles need to be tested, the locking nut 21 is loosened, the pick holder 23 is rotated by a certain angle, and the pick with the other wedging angle cuts the coal rock.
The cutting pick holder 23 appearance is the cylinder, and four cutting pick toothholders 26 axes slope in the cutting pick holder 23 axis, install on the cylindrical surface of cutting pick holder, along the equipartition all around, but inclination is different, and the connection mode of cutting pick toothholder 26 and cutting pick holder 23 is the welding. The picks 25 of the pick holder 23 are mounted with load cells 28 in a pick block 26.
When the movable experiment bench slides along the inverted T-shaped groove, the cutting device is driven to horizontally move, when the cutting tooth 25 moves to the simulated coal rock unit 2, the cutting tooth 25 starts to cut coal rock, the force transducer 28 in the cutting tooth holder 26 is under the action of external force, test data are input into the data acquisition system 33, and one-time cutting performance test is completed. Meanwhile, the experiment system can simulate coal rocks with different hardness by replacing the movable simulated coal rock unit.
The mine pressure adjusting device comprises a pressure adjusting movable plate 7, a pressure adjusting wrench 14, a pressure adjusting screw 13, a pressure adjusting connecting rod I8, a pressure adjusting connecting rod II 17, a pressure adjusting connecting rod III 6, a pressure adjusting connecting rod IV 4, a pressure adjusting connecting rod V3, a pressure adjusting connecting rod VI 9, a side fixing plate 12, a bolt I11 and a nut 10. The side fixing plate 12 is installed on the outer side of the fixing frame, is in surface contact with the side plate of the fixing frame, and is connected with the side plate of the fixing frame through a plurality of first bolts 11. The appearance of the side fixing plate 12 is a cuboid, a threaded hole is formed in the middle of the side fixing plate, the pressure regulating screw 13 is screwed with the threaded hole of the side fixing plate 12, the pressure regulating wrench 14 is of a cylindrical structure, the appearance of the pressure regulating screw 13 is a cylinder, an external thread is formed in the middle of the pressure regulating screw, a cylindrical hole is formed in the surface of an outer cylinder on one side of the pressure regulating screw, the axis of the hole is perpendicular to the axis of the pressure regulating screw 13, the pressure regulating wrench 14 is installed in the cylindrical hole of the pressure regulating screw 13, the pressure regulating wrench. The pressure regulating screw 13 is connected with the pressure regulating connecting rod six 9 through threads, the other end of the pressure regulating connecting rod six 9 is hinged with the pressure regulating connecting rod one 8, the pressure regulating connecting rod three 6 and the pressure regulating connecting rod two 17 respectively, one side of the pressure regulating connecting rod three 6 is hinged with the pressure regulating connecting rod one 8 and the pressure regulating connecting rod two 17, and the other side of the pressure regulating connecting rod three 6 is hinged with the pressure regulating connecting rod four 4 and the pressure regulating connecting rod five 3. The shapes of the pressure regulating connecting rod I8, the pressure regulating connecting rod II 17, the pressure regulating connecting rod III 6, the pressure regulating connecting rod IV 4 and the pressure regulating connecting rod V3 are cylinders. The second pressure regulating connecting rod 17 and the fourth pressure regulating connecting rod 4 are connected with the pressure regulating movable plate 7. When the pressure regulating screw 13 rotates, the pressure regulating movable plate 7 moves downwards, so that the pressure on the coal wall is changed, and different mine pressures are simulated.
The fixed frame is of a welded structure and comprises two fixed frame left side plates 1, a fixed frame right side plate 16, a fixed frame bottom plate 18, a fixed frame top plate 5 and a fixed frame back plate 41. The simulated coal-rock unit 2 is mounted in the fixed frame 102.
Claims (10)
1. A cutting performance test experimental system is technically characterized in that: the experimental system consists of the following parts: the movable experiment bench, simulation coal petrography unit, fixed frame, ore pressure adjusting device, piston (31), hydraulic pump (30), pneumatic cylinder (32) and data acquisition device (33) are constituteed, and simulation coal petrography unit (2) are installed inside fixed frame, and ore pressure adjusting device passes through threaded connection with fixed frame and links to each other, and piston (31) are articulated with simulation coal wall mount.
2. The experimental system for testing the cutting performance of the cutting machine as claimed in claim 1, is characterized in that: the simulated coal rock unit consists of a simulated coal rock (2), two coal rock frame side plates (15) and a coal rock frame bottom plate (29); the two coal rock frame side plates (15) are respectively and vertically connected with a coal rock frame bottom plate (29) and are connected in a welding mode; the simulated coal rock (2) is a cuboid and is placed in a cuboid opening frame consisting of two coal rock frame side plates (15) and a coal rock frame bottom plate (29); the simulated coal-rock unit (2) is arranged in the fixed frame.
3. The experimental system for testing the cutting performance of the cutting machine as claimed in claim 1, is characterized in that: the movable experiment bench consists of a bench body (19), a slide rail (20), a cutting device, a locking nut (21) and a bolt (22); the bottom of the frame body (19) is provided with two inverted T-shaped structures (24), and the two inverted T-shaped structures (24) are symmetrically distributed; the cross section of the sliding rail (19) is provided with two inverted T-shaped grooves, and the two inverted T-shaped structures are symmetrically distributed; the inverted T-shaped structure at the bottom of the movable experiment bench is arranged in an inverted T-shape of a slide rail (20) and slides along the direction vertical to the inverted T-shaped groove; the bottom of the movable experiment bench is provided with a U-shaped groove (40) which is vertical to the inverted T-shaped structure and is used for facilitating the assembly and disassembly of a first bolt (11).
4. The experimental system for testing the cutting performance of the cutting machine as claimed in claim 1, is characterized in that: the cutting device comprises a cutting tooth frame (23) and a plurality of force measuring units; the force measuring unit consists of a cutting tooth holder (26), a force measuring sensor (28), a cutting tooth (25) and a cutting tooth mounting sleeve (27), and each force measuring unit and the axis of the cutting tooth holder (23) form different angles.
5. The experimental system for testing the cutting performance of the cutting machine as claimed in claim 1, is characterized in that: the cutting device is installed in activity laboratory bench frame body (19) top, and activity laboratory bench frame lower surface has the ladder through-hole structure, cuts the through-hole structure at the tooth frame (23) center, and bolt two (22) link together activity laboratory bench frame and cutting tooth frame (23) central through-hole through activity laboratory bench frame lower surface ladder through-hole and cutting tooth frame (23), lock through lock nut (21) simultaneously.
6. The experimental system for testing the cutting performance of the cutting machine as claimed in claim 1, is characterized in that: the cutting pick holder (23) is cylindrical in shape, the axes of the four cutting pick holders (26) are inclined to the axis of the cutting pick holder (23), the four cutting pick holders are arranged on the cylindrical outer surface of the cutting pick holder and are uniformly distributed along the periphery, but the inclination angles are different, and the cutting pick holders (26) are connected with the cutting pick holder (23) in a welding mode; the cutting pick (25) and the load cell (28) on the cutting pick holder (23) are arranged in the cutting pick holder (26).
7. The experimental system for testing the cutting performance of the cutting machine as claimed in claim 1, is characterized in that: pneumatic cylinder (32) are articulated with activity experiment bench side, and when piston (31) of pneumatic cylinder (32) were flexible, promote pneumatic cylinder (32) and remove, make activity experiment bench slide along the type of falling T groove, and hydraulic pump (30) are through controlling pneumatic cylinder (32) velocity of flow, alright control activity experiment bench's translation rate.
8. The experimental system for testing the cutting performance of the cutting machine as claimed in claim 1, is characterized in that: when the movable experiment bench slides along the inverted T-shaped groove, the cutting device is driven to horizontally move, when the cutting tooth (25) moves to the simulated coal rock unit (2), the cutting tooth (25) begins to cut coal rock, the force transducer (28) in the cutting tooth holder (26) is under the action of external force, test data are input into the data acquisition system (33), and one-time cutting performance test is completed.
9. The experimental system for testing the cutting performance of the cutting machine as claimed in claim 1, is characterized in that: the mine pressure adjusting device comprises a pressure adjusting movable plate (7), a pressure adjusting wrench (14), a pressure adjusting screw (13), a pressure adjusting connecting rod I (8), a pressure adjusting connecting rod II (17), a pressure adjusting connecting rod III (6), a pressure adjusting connecting rod IV (4), a pressure adjusting connecting rod V (3), a pressure adjusting connecting rod VI (9), a side fixing plate (12), a bolt I (11) and a nut (10); the side fixing plate (12) is arranged on the outer side of the fixing frame, is in surface contact with the side plate of the fixing frame and is connected with the side plate of the fixing frame through a plurality of first bolts (11); the side fixing plate (12) is in a cuboid shape, a threaded hole is formed in the middle of the side fixing plate, the pressure regulating screw (13) is screwed with the threaded hole of the side fixing plate () 12, the pressure regulating wrench (14) is in a cylindrical structure, the pressure regulating screw (13) is in a cylindrical shape, external threads are arranged in the middle of the pressure regulating screw (13), a cylindrical hole is formed in the outer cylindrical surface of one side of the pressure regulating screw, the axis of the hole is vertically intersected with the axis of the pressure regulating screw (13), the pressure regulating wrench (14) is installed in the cylindrical hole of the pressure regulating screw (13), and the pressure regulating wrench (13) is rotated; the pressure regulating screw (13) is connected with the pressure regulating connecting rod six (9) through threads, the other end of the pressure regulating connecting rod six (9) is hinged with the pressure regulating connecting rod one (8), the pressure regulating connecting rod three (6) and the pressure regulating connecting rod two (17) respectively, one side of the pressure regulating connecting rod three (6) is hinged with the pressure regulating connecting rod one (8) and the pressure regulating connecting rod two (17), and the other side of the pressure regulating connecting rod three (6) is hinged with the pressure regulating connecting rod four (4) and the pressure regulating connecting rod five (; the shapes of the pressure regulating connecting rod I (8), the pressure regulating connecting rod II (17), the pressure regulating connecting rod III (6), the pressure regulating connecting rod IV (4) and the pressure regulating connecting rod V (3) are cylinders; the second pressure regulating connecting rod (17) and the fourth pressure regulating connecting rod (4) are connected with the pressure regulating movable plate (7); when the pressure regulating screw (13) rotates, the pressure regulating movable plate (7) moves downwards, so that the pressure on the coal wall is changed, and different mine pressures are simulated.
10. The experimental system for testing the cutting performance of the cutting machine as claimed in claim 1, is characterized in that: the fixed frame is of a welded structure and comprises two fixed frame left side plates (1), a fixed frame right side plate (16), a fixed frame bottom plate (18), a fixed frame top plate (5) and a fixed frame back plate (41).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911296075.8A CN110987640A (en) | 2019-12-16 | 2019-12-16 | Cutting performance test experiment system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911296075.8A CN110987640A (en) | 2019-12-16 | 2019-12-16 | Cutting performance test experiment system |
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| CN110987640A true CN110987640A (en) | 2020-04-10 |
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| CN201911296075.8A Pending CN110987640A (en) | 2019-12-16 | 2019-12-16 | Cutting performance test experiment system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678794A (en) * | 2020-06-23 | 2020-09-18 | 天地科技股份有限公司 | Hydraulic support external loading experimental device and experimental method |
| CN114397218A (en) * | 2022-01-22 | 2022-04-26 | 天地上海采掘装备科技有限公司 | Comprehensive test bed for cutting and abrasion |
| CN114397216A (en) * | 2022-01-22 | 2022-04-26 | 天地上海采掘装备科技有限公司 | Cutting abrasion test bed |
| CN114397217A (en) * | 2022-01-22 | 2022-04-26 | 天地上海采掘装备科技有限公司 | Multi-tooth cutting head and cutting test bed |
-
2019
- 2019-12-16 CN CN201911296075.8A patent/CN110987640A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111678794A (en) * | 2020-06-23 | 2020-09-18 | 天地科技股份有限公司 | Hydraulic support external loading experimental device and experimental method |
| CN111678794B (en) * | 2020-06-23 | 2023-01-24 | 天地科技股份有限公司 | Hydraulic support external loading experimental device and experimental method |
| CN114397218A (en) * | 2022-01-22 | 2022-04-26 | 天地上海采掘装备科技有限公司 | Comprehensive test bed for cutting and abrasion |
| CN114397216A (en) * | 2022-01-22 | 2022-04-26 | 天地上海采掘装备科技有限公司 | Cutting abrasion test bed |
| CN114397217A (en) * | 2022-01-22 | 2022-04-26 | 天地上海采掘装备科技有限公司 | Multi-tooth cutting head and cutting test bed |
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