A solid object knife tooth rotary cutting test device

Abstract

The application discloses a solid object cutter tooth rotary cutting test device, which comprises a cutter head, cutter teeth, a moving platform and a fixed support, the cutter head is rotationally connected with the moving platform, a plurality of cutter teeth are arranged radially on the outer ring of the cutter head, the blade of the cutter tooth is in contact with a solid test piece during the rotary cutting test, and the solid test piece is located in the fixed support; the cutter head comprises a shaft hub, a support arm, a device bin one and a tooth stress transmitter; the cutter tooth comprises a tooth seat, a tooth core and a tooth stress sensor, tooth stress sensors for detecting the stress of the tooth core in three directions of XYZ are arranged between the bottom surface and the adjacent two side surfaces of the tooth core and the tooth seat in the tooth seat; the fixed support comprises a support frame and a test piece frame, the front side of the support frame is provided with a cutter head inlet, the rear side is provided with a cutter head outlet, and test piece stress sensors for detecting the stress of the solid test piece in three directions of XYZ are arranged between one side wall, the bottom wall and the rear wall of the test piece frame and the support frame. The application can measure the cutting load of the cutter tooth under the rotary cutting state with high precision.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of dredging engineering, in particular to a tooth rotary cutting test device for studying rock, concrete or other hard solid objects. BACKGROUND

[0002] In the process of excavating hard solid materials such as rock, concrete and coal, the cutter teeth interact with the cutting material. The cutting force of the cutter teeth is one of the important factors for evaluating the excavation efficiency, and is also related to the wear and fracture of the cutter teeth and the service life of the excavating machine, but the cutting load is difficult to obtain. For example, in the study of rock mechanics, uniaxial compression test, point load test and rock splitting test are usually used, but the rock parameters obtained by these tests are closely related to the bearing capacity of the foundation, and are less useful for rock excavation engineering. Experience is still the main method in engineering application.

[0003] There are few reports on test devices for cutting solid materials with cutter teeth. Rotary cutting is a common feature of shield machines, mining machines and reamers, and the comprehensive cutting force of this cutting method is relatively stable. The cutting thickness, cutting speed and cutting angle of rotary cutting are constantly changing, which is obviously different from linear translation cutting. Chinese Patent Publication No. CN103499505A discloses a cutter tooth linear cutting rock test device, in which the cutter tooth cutting is carried out along a straight line, but it cannot realize rotary rock breaking research, and the friction between the rock and the device causes the sensor for measuring the rock reaction force to be unable to effectively measure the rock reaction force. Chinese Patent Publication No. CN105067231A discloses a multifunctional petroleum drill bit single-tooth cutting test device and method, which realizes drilling process test, and the forward direction is along the rotation axis, but it cannot be realized for the case where the translation direction is perpendicular to the rotation axis. SUMMARY

[0004] In order to solve the problems existing in the prior art, the present application provides a solid object cutter tooth rotary cutting test device which has a reasonable structure design, is easy to implement, realizes wireless transmission and can measure the cutter tooth cutting load in a rotary cutting state with high precision.

[0005] The present application is implemented as follows: a solid object cutter tooth rotary cutting test device, comprising a cutter disc, cutter teeth, a moving platform and a fixed support, the cutter disc is located below the moving platform and is rotationally connected with the moving platform through a rotating shaft, the moving platform is used to drive the cutter disc to translate and rotate; the cutter disc has a disc-shaped structure, a plurality of cutter teeth are arranged radially on the outer ring of the cutter disc, and the blade part of the cutter teeth protrudes from the cutter disc; during the rotary cutting test, the blade part of the cutter teeth is in contact with a solid test piece, the solid test piece is located inside the fixed support, and the fixed support is located below the moving platform and maintains a fixed distance with the moving platform.

[0006] The cutter head comprises a shaft hub, a support arm, a device compartment one and a tooth force transmitter, the shaft hub has a shaft hole, the rotating shaft of the moving platform passes through the shaft hole and is fixed with the shaft hub, the support arm is radially arranged around the outer wall of the shaft hub and is connected with the outer wall of the shaft hub, each of the support arms has an inner compartment for mounting a cutter tooth, the device compartment one is arranged between two adjacent support arms, and the tooth force transmitter is mounted in the device compartment one.

[0007] The cutter tooth comprises a tooth seat, a tooth core and a tooth force sensor, the tooth seat is embedded in the inner compartment of the cutter head and is fixed, the tooth core is embedded in the inner part of the tooth seat and is fixed, the bottom surface and the adjacent two side surfaces of the tooth core in the inner part of the tooth seat are respectively provided with tooth force sensors for detecting the force of the tooth core in the XYZ three directions, the three tooth force sensors are all mounted on the tooth seat and are attached to the tooth core, and the three tooth force sensors are respectively connected with the corresponding tooth force transmitter through wires; the remaining side surfaces of the tooth core and the tooth seat are provided with a grid for stably fixing the tooth core.

[0008] The fixing support comprises a support frame and a test piece frame, the front side of the support frame has a cutter head inlet, the rear side of the support frame has a cutter head outlet, the test piece frame is arranged in the support frame, the solid test piece is arranged in the test piece frame, the front wall and the top wall of the test piece frame are both hollow structures in the middle and are communicated, one side wall, the bottom wall and the rear wall of the test piece frame and the support frame are respectively provided with test piece force sensors for detecting the force of the solid test piece in the XYZ three directions, the three test piece force sensors are all mounted on the support frame and are attached to the test piece frame, the three test piece force sensors are respectively connected with the test piece force transmitter through wires, and the test piece force transmitter is arranged on the support frame; the other side wall of the test piece frame and the support frame are provided with a top tightening screw one for stably fixing the test piece frame left and right, and the front side of the test piece frame and the support frame are provided with a top tightening screw two for stably fixing the test piece frame front and rear.

[0009] Preferably, the cutter head comprises side sealing plates and outer sealing plates, the side sealing plates are arranged on the two sides of the cutter head and are connected with the support arms, the two adjacent support arms are connected through the outer sealing plates at the end away from the shaft hub, and the space for accommodating the device compartment one is formed between the two support arms.

[0010] Further preferably, the side sealing plates are of an integral structure or a combined structure.

[0011] Preferably, the number of the support arms is two pairs or more, and the number of the device compartments one is two pairs or more.

[0012] Preferably, the tooth force sensor is mounted on the tooth seat by bolts, and the inner side of the tooth seat is provided with an inner seat fixing ring at the position corresponding to the tooth force sensor, the tooth force sensor is located inside the inner seat fixing ring, and the height of the inner seat fixing ring is lower than that of the tooth force sensor.

[0013] Preferably, the moving platform comprises a motor, a gear box, a rotating shaft, a platform support and a guide rail, the motor and the gear box are mounted on the platform support respectively, the output end of the motor is connected with the input end of the gear box, the output end of the gear box is connected with the input end of the rotating shaft, the output end of the rotating shaft is connected with the cutter head, the platform support is connected with the guide rail in sliding mode, and the guide rail is fixed to the test site.

[0014] Preferably, the support frame comprises an outer frame and a middle frame, the middle frame is embedded in the inner part of the outer frame, the test piece frame is arranged in the inner part of the middle frame, and the three test piece force sensors are mounted on the middle frame by bolts.

[0015] Further preferably, the inner side of the middle frame is provided with a frame inner fixing ring at the position corresponding to the test piece force sensor, the test piece force sensor is located inside the frame inner fixing ring, and the height of the frame inner fixing ring is lower than that of the test piece force sensor.

[0016] Further preferably, the rear side of the outer frame is provided with a device bin two, and the test piece force transmitter is mounted in the device bin two.

[0017] Preferably, the test piece frame comprises a test piece box one and a test piece box two, the test piece box one and the test piece box two are connected, the solid test piece is located in the internal space formed by the test piece box one and the test piece box two and closely adheres to the test piece box one and the test piece box two, and a clamping plate is arranged between the test piece box one and the test piece box two and the corresponding test piece force sensor.

[0018] The present application has the following advantages and beneficial effects:

[0019] The solid object cutter tooth rotary cutting test device can realize cutting test of combined rotation and translation of the cutter tooth, the cutting load of the cutter tooth part can be independently measured, the cutting load of the solid material part can also be independently measured, the two can be verified with each other, and all the measurement data can be wirelessly transmitted. Through the rotary cutting test, the load change rule of the cutter tooth when digging solid materials such as rock and coal with high hardness can be obtained, and solid test data for optimizing the shape of the cutter tooth and the excavating machine tool can be provided. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is the installation schematic view of the solid object cutter tooth rotary cutting test device in the preferred embodiment of the present application;

[0021] Figure 2is a structural schematic diagram of an integrated cutter head in a preferred embodiment of the present application;

[0022] Figure 3 is a structural schematic diagram of a combined cutter head in a preferred embodiment of the present application;

[0023] Figure 4 is a structural schematic diagram of the inside of a cutter head in a preferred embodiment of the present application;

[0024] Figure 5 is a structural schematic diagram of the connection between a cutter head and a cutter tooth in a preferred embodiment of the present application;

[0025] Figure 6 is a structural schematic diagram of the connection between a cutter tooth and a solid test piece in a preferred embodiment of the present application;

[0026] Figure 7 is a structural schematic diagram of a cutter tooth in a preferred embodiment of the present application;

[0027] Figure 8 is a structural schematic diagram of the cooperation between a tooth seat and a tooth core in a preferred embodiment of the present application;

[0028] Figure 9 is a structural schematic diagram of the inside of a tooth seat in a preferred embodiment of the present application;

[0029] Figure 10 is a structural schematic diagram of the arrangement of tooth force sensors inside a tooth seat in a preferred embodiment of the present application;

[0030] Figure 11 is a structural schematic diagram of a fixed support in a preferred embodiment of the present application;

[0031] Figure 12 is a structural schematic diagram of an outer frame in a preferred embodiment of the present application;

[0032] Figure 13 is a structural schematic diagram of the connection between a middle frame and a test piece frame in a preferred embodiment of the present application;

[0033] Figure 14 is a structural schematic diagram of a middle frame in a preferred embodiment of the present application Figure 1 ;

[0034] Figure 15 is a structural schematic diagram of a middle frame in a preferred embodiment of the present application Figure 2 ;

[0035] Figure 16 is a structural schematic diagram of the connection between a test piece frame and a solid test piece in a preferred embodiment of the present application.

[0036] wherein:

[0037] 10, cutter head; 101, shaft hub; 1011, shaft hole; 102, support arm; 1021, inner compartment; 1022, limit; 1023, wire hole one; 103, side sealing plate; 104, outer sealing plate; 105, device compartment one; 106, tooth force transmitter; 107, space one;

[0038] 20, cutter tooth; 201, tooth seat; 2011, side plate one; 20111, wire hole two; 2012, side plate two; 2013, side plate three; 2014, side plate four; 2015, bottom plate; 2016, top plate; 20161, core hole; 202, tooth core; 203, tooth force sensor one; 204, tooth force sensor two; 205, tooth force sensor three; 206, inner fixing ring one; 207, inner fixing ring two; 208, inner fixing ring three; 209, grid;

[0039] 30, fixed support; 301, outer frame; 3011, support leg; 3012, cross beam one; 3013, longitudinal beam one; 3014, longitudinal beam two; 3015, cutter head inlet; 3016, cutter head outlet; 302, middle frame; 3021, side frame one; 3022, side frame two; 3023, rear frame; 30231, notch; 3024, bottom frame; 303, test piece frame; 3031, test piece box one; 3032, test piece box two; 304, test piece force sensor one; 305, test piece force sensor two; 306, test piece force sensor three; 307, inner fixing ring one; 308, inner fixing ring two; 309, inner fixing ring three; 310, device compartment two; 311, test piece force transmitter; 312, clamping plate; 313, jacking screw one; 314, jacking plate; 315, jacking screw two;

[0040] 40, moving platform; 401, motor; 402, gear box; 403, rotating shaft; 404, platform support; 405, guide rail;

[0041] 50, solid test piece. DETAILED DESCRIPTION

[0042] In order to make the objectives, technical solutions and advantages of the present application clearer, the present application will be further described in detail below with examples and in conjunction with the drawings. It should be understood that the specific examples described herein are only used to explain the present application and should not be used to limit the present application.

[0043] In the description of the present application, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. For example, the front side refers to the direction of the cutter tooth along the translation of the cutting of the test piece, and similarly, the back side refers to the opposite direction of the front side. Unless otherwise specified, these relative terms should be understood in conjunction with the orientation of the components shown in the drawings.

[0044] In the description of the present application, it should be noted that unless otherwise specified and limited, the terms "mounting", "connecting", "connecting" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected; it can be directly connected, or indirectly connected through an intermediate medium; it can be the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0045] Embodiment

[0046] During use of the cutter tooth rotary cutting test device for solid objects, the rotary cutting of the cutter tooth 20 on the solid test piece 50 is a combination of rotation and translation.

[0047] Please refer to Figure 1 The embodiment provides a cutter tooth rotary cutting test device for solid objects, which comprises a cutter disc 10, a cutter tooth 20, a moving platform 40 and a fixed support 30. The cutter disc 10 is located below the moving platform 40 and is rotationally connected with the moving platform 40 through a rotating shaft 403. The moving platform 40 is used to drive the cutter disc 10 to translate and rotate. The cutter disc 10 is in a disc-shaped structure. A plurality of cutter teeth 20 are radially arranged on the outer ring of the cutter disc 10. The cutter tooth 20 is embedded in the cutter disc 10 and rotates around the rotating shaft 403 with the cutter disc 10. The blade part of the cutter tooth 20 protrudes from the cutter disc 10. When the cutter disc 10 rotates, the cutter tooth 20 rotates with it. During the rotary cutting test, the blade part of the cutter tooth 20 contacts the solid test piece 50. The solid test piece 50 is located inside the fixed support 30. The fixed support 30 is located below the moving platform 40 and maintains a fixed distance with the moving platform 40. The fixed support 30 is fixed to the test site (not shown in the figure). The fixed support 30 can be fixed by welding or bolt connection. The solid test piece 50 does not have relative displacement with the fixed support 30. The cutter tooth 20 on the cutter disc 10 realizes rotary cutting of the solid test piece 50 through the rotating action of the rotating shaft 403. The moving platform 40 realizes moving rotary cutting of the solid test piece 50.

[0048] AsFigures 2-5 As shown, the cutter head 10 comprises a hub 101, a support arm 102, a side sealing plate 103, an outer sealing plate 104, a device compartment 105 and a tooth force transmitter 106. The hub 101 has a cylindrical outer wall, and has a shaft hole 1011 through which the rotating shaft 403 of the moving platform 40 is fixed to the hub 101. The support arms 102 are radially arranged around the outer wall of the hub 101 and connected to the outer wall of the hub 101. Each of the support arms 102 has an inner compartment 1021 for mounting the cutter teeth 20. The side sealing plates 103 are located on both sides of the cutter head 10 and connected to the support arms 102. Adjacent two support arms 102 are connected at the end away from the hub 101 by the outer sealing plate 104, which is connected to the side sealing plates 103 on both sides, forming a space between the two support arms 102 to accommodate the device compartment 105. The device compartment 105 is arranged between the adjacent two support arms 102 and connected to the side sealing plates 103 and the outer sealing plate 104. The tooth force transmitter 106 is installed in the device compartment 105. In the preferred example, the outer cylindrical surface of the rotating shaft 403 transmits a certain pressure to the inner cylindrical surface of the shaft hole 1011 of the hub 101 of the cutter head 10 through the tensioning device. Under the action of friction, when the cutter head 10 rotates around the axis of the rotating shaft 403, there is no relative displacement between the cutter head 10 and the rotating shaft 403. The side sealing plates 103 are of an integrated structure or a combined structure, so that the cutter head 10 forms an integrated cutter head 10 or a combined cutter head 10.

[0049] The number of support arms 102 is two or more, and the number of device compartments 105 is two or more. In the preferred example, the number of support arms 102 is six, and the support arms 102 are in the form of a four-prism hollow structure. The inner compartment 1021 is the internal space of the support arm 102, so the number of inner compartments 1021 is also six. The inner compartment 1021 has a limit 1022, which is connected to the bottom of the cutter tooth 20, i.e. the cutter tooth 20 is located in the space away from the center of the hub 101 in the inner compartment 1021. One side of the support arm 102 is provided with a wire hole 1023 for the wires of the tooth force sensor to pass out of the inner compartment 1021 and be connected to the tooth force transmitter 106. The number of cutter teeth 20 is selected according to the needs of cutting, and generally is selected to be symmetrical to the cutter head 10.

[0050] The included angle between adjacent support arms 102 is 60°, and adjacent support arms 102 and the side sealing plates 103 and the outer sealing plate 104 together form a space 107, in which the device compartment 105 is located. The tooth force transmitter 106 is located in the device compartment 105 and is fixed. The wires of the tooth force transmitter 106 are connected to the tooth force sensor in the cutter tooth 20, and the wires include metal wires for power supply and data lines for data transmission.

[0051] As Figures 6-10 shown in the figure, the tooth 20 comprises a tooth seat 201, a tooth core 202, a tooth force sensor, the tooth seat 201 is embedded in the inner bin 1021 of the cutter head 10 and fixed, the tooth core 202 is embedded in the inside of the tooth seat 201 and fixed, the bottom surface and the adjacent two side surfaces of the tooth core 202 in the inside of the tooth seat 201 are respectively provided with tooth force sensors for detecting the force of the tooth core 202 in the three directions of XYZ, the three tooth force sensors are all installed on the tooth seat 201 by bolts and are in close contact with the tooth core 202, and the three tooth force sensors are respectively connected with the corresponding tooth force transmitters 106 through wires; the remaining side surfaces of the tooth core 202 and the tooth seat 201 are provided with a grid 209 for fixing the tooth core 202 stably.

[0052] The inside of the tooth seat 201 is respectively provided with an inner seat fixing ring at the position of the corresponding tooth force sensor, the tooth force sensor is located inside the inner seat fixing ring, and the height of the inner seat fixing ring is lower than the height of the tooth force sensor.

[0053] In the preferred examples, as Figure 7 shown in the figure, the tooth seat 201 is a square structure, which is composed of a bottom plate 2015, a side plate one 2011, a side plate two 2012, a side plate three 2013, a side plate four 2014 and a top plate 2016, the bottom plate 2015 is located at the bottom of the tooth seat 201 and is connected with the bottom of the side plate one 2011, the side plate two 2012, the side plate three 2013 and the side plate four 2014 by bolts respectively, the top plate 2016 is located at the top of the tooth seat 201 and is connected with the top of the side plate one 2011, the side plate two 2012, the side plate three 2013 and the side plate four 2014 by bolts respectively, the top plate 2016 has a core hole 20161, and the tooth core 202 is connected with the tooth seat 201 through the core hole 20161.

[0054] Three tooth force sensors are tooth force sensor one 203, tooth force sensor two 204, tooth force sensor three 205, the main body of the three tooth force sensors is a cylindrical structure, the upper and lower surfaces have bolt holes, and the side surface has a wire. The side plate one 2011 has a seat inner fixing ring one 206, the side plate two 2012 has a seat inner fixing ring two 207, and the bottom plate 2015 has a seat inner fixing ring three 208, the seat inner fixing ring one 206, the seat inner fixing ring two 207 and the seat inner fixing ring three 208 are all circular ring structures, the tooth force sensor one 203 is located inside the seat inner fixing ring one 206 and is connected and fixed with the side plate one 2011 through bolts, the tooth force sensor two 204 is located inside the seat inner fixing ring two 207 and is connected and fixed with the side plate two 2012 through bolts, and the tooth force sensor three 205 is located inside the seat inner fixing ring three 208 and is connected and fixed with the bottom plate 2015 through bolts; the height of the seat inner fixing ring is lower than the height of the corresponding tooth force sensor, and the inner diameter of the seat inner fixing ring is slightly larger than the outer diameter of the tooth force sensor. In the preferred example, the side surface of the seat inner fixing ring has an opening for placing the wire of the tooth force sensor. The side plate one 2011 has a wire hole two 20111 for the wire of the tooth force sensor to pass out of the gullet 20.

[0055] The specific steps of assembling the gullet 20 are as follows:

[0056] First step, install tooth force sensors: install tooth force sensor one 203 into seat inner fixing ring one 206 of side plate one 2011, fix tooth force sensor one 203 and side plate one 2011 through bolts, install tooth force sensor two 204 into seat inner fixing ring two 207 of side plate two 2012, fix tooth force sensor two 204 and side plate two 2012 through bolts, and install tooth force sensor three 205 into seat inner fixing ring three 208 of bottom plate 2015, fix tooth force sensor three 205 and bottom plate 2015 through bolts.

[0057] Second step, bind tooth force sensor wires and fix grid 209: bind tooth force sensor one 203 wire, tooth force sensor two 204 wire and tooth force sensor three 205 wire into a bundle, pass through wire hole two 20111 to the outside of gullet 20; insert grid 209 into side plate three 2013 and side plate four 2014, the grid 209 is a mutually intersecting grid 209 with holes on it, which can be fastened by bolts passing through the corresponding side plate.

[0058] The third step is to insert and fix the tooth core 202: Insert the tooth core 202 into the top plate 2016 and embed it into the tooth seat 201. Drive the bolts of the first side plate 2011, and the corresponding side of the tooth core 202 will be in close contact with the first tooth force sensor 203. Drive the bolts of the second side plate 2012, and the corresponding side of the tooth core 202 will be in close contact with the second tooth force sensor 204. Drive the bolts of the bottom plate 2015, and the bottom surface of the tooth core 202 will be in close contact with the third tooth force sensor 205.

[0059] Step 4, fix the top plate 2016: The top plate 2016 is attached to the side plate 1 2011, side plate 2012, side plate 3 2013, and side plate 4 2014 along the ridge direction of the tooth core 202. The top plate 2016 is tightly attached to the side plate 1 2011, side plate 2012, side plate 3 2013, and side plate 4 2014 through the bolts of the top plate 2016.

[0060] Fifth step, connect the tooth force transmitter 106: pass the wire of the tied tooth force sensor through the wire hole 1023 and connect it to the wire of the corresponding tooth force transmitter 106 in sequence, and fix the wire in sequence inside the cutter head 10.

[0061] Step 6, fixing the cutting teeth 20: The cutting teeth 20 are embedded in the inner chamber 1021 of the cutter head 10, reaching the limit 1022 and being fixed to the limit 1022 by bolts. At this time, the upper edge of the top plate 2016 of the cutting teeth 20 is flush with the outer edge of the outer sealing plate 104 of the cutter head 10, and the tooth core 202 of the cutting teeth 20 extends out of the outer edge of the cutter head 10, that is, the cutting edge of the tooth core 202 is located outside the cutter head 10.

[0062] like Figure 1 As shown, the mobile platform 40 includes a motor 401, a gearbox 402, a rotating shaft 403, a platform support 404, and a guide rail 405. The motor 401 and gearbox 402 are respectively mounted on the platform support 404. The output end of the motor 401 is connected to the input end of the gearbox 402, and the output end of the gearbox 402 is connected to the input end of the rotating shaft 403. The output end of the rotating shaft 403 is connected to the cutter head 10. The platform support 404 is slidably connected to the guide rail 405, and the guide rail 405 is fixed to the test site (not shown in the figure). The mobile platform 40 moves along the guide rail 405 via rollers. The axis of the rotating shaft 403 is perpendicular to the direction of the guide rail 405, and the cutter head 10 translates with the mobile platform 40.

[0063] like Figures 11-16As shown, the fixing support 30 comprises a support frame and a test piece frame 303, the front side of the support frame has a cutter disc inlet 3015, the rear side of the support frame has a cutter disc outlet 3016, the test piece frame 303 is arranged inside the support frame, the solid test piece 50 is arranged inside the test piece frame 303, the front side and the top side of the test piece frame 303 are both hollow structures in the middle and are communicated, so as to facilitate the cutting of the solid test piece 50 by the cutter tooth 20, one side, the bottom side and the rear side of the test piece frame 303 are respectively provided with test piece stress sensors for detecting the stress of the solid test piece 50 in three directions of XYZ between the test piece frame 303 and the support frame, the three test piece stress sensors are all mounted on the support frame and are attached to the test piece frame 303, the three test piece stress sensors are respectively connected with a test piece stress transmitter 311 through wires, and the test piece stress transmitter 311 is arranged on the support frame; the other side of the test piece frame 303 and the support frame are provided with a top tightening screw one 313 for fixing the test piece frame 303 left and right stably, and the front side of the test piece frame 303 and the support frame are provided with a top tightening screw two 315 for fixing the test piece frame 303 front and back stably.

[0064] Specifically, the support frame comprises an outer frame 301 and a middle frame 302, the middle frame 302 is embedded inside the outer frame 301, the test piece frame 303 is arranged inside the middle frame 302, and the three test piece stress sensors are all mounted on the middle frame 302 through bolts; a plurality of screw holes one are symmetrically arranged on the side frame of the middle frame 302 which does not have a sensor, the top tightening screw one 313 is threadedly connected on the screw hole one, and the test piece frame 303 can be tightened left and right by adjusting the top tightening screw one 313; the top tightening plate 314 is arranged between the left and right sides of the front side of the middle frame 302, the screw hole two is arranged on the top tightening plate 314, the top tightening screw two 315 is threadedly connected on the screw hole two, and the test piece frame 303 can be tightened front and back by adjusting the top tightening screw two 315. The inner side of the middle frame 302 is provided with an inner frame fixing ring at a position corresponding to the test piece stress sensor, the test piece stress sensor is located inside the inner frame fixing ring, and the height of the inner frame fixing ring is lower than that of the test piece stress sensor. The rear side of the outer frame 301 is provided with a device bin two 310, and the test piece stress transmitter 311 is mounted in the device bin two 310.

[0065] As Figure 12As shown, the outer frame 301 comprises legs 3011, cross beams 3012, longitudinal beams 3013 and longitudinal beams 3014, the legs 3011 are fixed on the test site (not shown in the figure), the number of legs 3011 is four pairs, the cross beams 3012 and the longitudinal beams 3013 are sequentially connected to all the legs 3011, the longitudinal beams 3014 are located on the top of the legs 3011, the longitudinal beams 3014 are two pairs, one pair of longitudinal beams 3014 connects two pairs of legs 3011 on the same side, and the other pair of longitudinal beams 3014 connects two pairs of legs 3011 on the same side. The device bin 310 is arranged on the outer frame 301, and the device bin 310 is arranged on the cross beam 3012 located on the rear side.

[0066] The static distance between the left and right longitudinal beams 3014 is greater than the static distance between the left and right legs 3011, so that a fitting groove is formed between the longitudinal beam 3014 and the two legs 3011. When the middle frame 302 is placed inside the outer frame 301, the middle frame 302 is fitted in the space surrounded by the longitudinal beam 3014 and the leg 3011, and the bottom end surface of the middle frame 302 is attached to the upper end surface of the longitudinal beam 3013.

[0067] As shown in Figure 14 and Figure 15 The middle frame 302 is connected by side frame 3021, side frame 3022, rear frame 3023 and bottom frame 3024, side frame 3021 is connected with rear frame 3023 and bottom frame 3024 respectively, side frame 3022 is parallel to side frame 3021, and side frame 3022 is connected with rear frame 3023 and bottom frame 3024. Side frame 3021 has cross beams and vertical beams in the shape of "cross", side frame 3022 has cross beams and vertical beams in the shape of "cross", and rear frame 3023 has cross beams and vertical beams in the shape of "T".

[0068] Three said specimen force sensors are specimen force sensor one 304, specimen force sensor two 305, and specimen force sensor three 306. The main body of the three said specimen force sensors is a cylindrical structure, with bolt holes on the upper and lower surfaces and wires on the side surface. The side frame one 3021 has an inner fixing ring one, the rear frame 3023 has an inner positioning ring two, and the bottom frame 3024 has an inner positioning ring three. The inner fixing ring one 307, the inner positioning ring two 308, and the inner positioning ring three 309 are all circular ring structures. The specimen force sensor one 304 is located inside the inner fixing ring one 307 and is connected and fixed with the side frame one 3021 by bolts, the specimen force sensor two 305 is located inside the inner positioning ring two 308 and is connected and fixed with the rear frame 3023 by bolts, and the specimen force sensor three 306 is located inside the inner positioning ring three 309 and is connected and fixed with the bottom frame 3024 by bolts. The height of the inner fixing ring is lower than the height of the specimen force sensor, and the inner diameter of the inner fixing ring is slightly larger than the outer diameter of the specimen force sensor. In the preferred example, the side surface of the inner fixing ring also has an opening for placing the wires of the sensor.

[0069] In the preferred example, the upper part of the rear frame 3023 has a notch 30231, and the rear frame 3023 has a "T" shape structure. The cutter teeth 20 rotate and translate with the cutter head 10, enter from the cutter head entrance 3015 of the outer frame 301, pass through the notch 30231, and finally exit from the cutter head exit 3016 of the outer frame 301, ensuring the continuous performance of the cutting test.

[0070] As shown in Figure 16 The specimen holder 303 includes specimen box one 3031 and specimen box two 3032, which are connected. The solid specimen 50 is located in the internal space formed by specimen box one 3031 and specimen box two 3032 and tightly fits with specimen box one 3031 and specimen box two 3032. After the test is completed, the solid specimen 50 that has been cut is taken out from the internal space formed by specimen box one 3031 and specimen box two 3032.

[0071] The test piece box one 3031 and the test piece box two 3032 fix the solid test piece 50 through connection. The test piece box one 3031 comprises a side wall, a rear wall and a bottom wall, the side wall is a "cross-shaped" hollow structure, the bottom wall is a "cross-shaped" hollow structure, and the rear wall is a "cross-shaped" hollow structure, so that the solid test piece 50 and the deformation state of the solid test piece 50 during the test can be observed from the outside of the side wall of the test piece box one 3031. The test piece box two 3032 comprises a side wall, an upper wall and a front wall, the side wall is a "cross-shaped" hollow structure, the upper wall is a middle hollow structure, and the front wall is a middle hollow structure, the hollow parts of the upper wall and the front wall of the test piece box two 3032 are communicated, so that the solid test piece 50 and the deformation state of the solid test piece 50 during the test can be observed from the outside of the side wall of the test piece box two 3032. The clamping plates 312 are arranged between the test piece box one 3031 and the test piece box two 3032 and the corresponding test piece stress sensors, so that the test piece stress sensors can stably obtain the stress of the solid test piece 50. The clamping plates 312 are transparent plates made of acrylic (PMMA) or polyvinyl chloride (PVC), and the transparency of the acrylic (PMMA) is better. The PVC can replace part of the stainless steel material and has good transparency.

[0072] The cutter teeth 20 enter the solid test piece 50 from the front wall of the test piece box two 3032 and gradually damage the solid test piece 50 along the hollow structure of the upper wall of the test piece box two 3032. Since the test piece box one 3031 and the test piece box two 3032 are both hollow structures, the deformation of the solid test piece 50 can be directly observed by the tester.

[0073] The specific steps of assembling the fixing support 30 are as follows:

[0074] Firstly, the test piece stress sensors are installed. The test piece stress sensor one 304 is installed into the inner fixing ring one 307 of the side frame one 3021 of the middle frame 302, the test piece stress sensor one 304 and the side frame one 3021 are fixed through bolts, the test piece stress sensor two 305 is installed into the inner fixing ring two 308 of the front frame, the test piece stress sensor two 305 and the front frame are fixed through bolts, and the test piece stress sensor three 306 is installed into the inner fixing ring three 309 of the bottom frame 3024, and the test piece stress sensor three 306 and the bottom frame 3024 are fixed through bolts.

[0075] Secondly, the wires of the test piece stress sensors are bound. The wires of the test piece stress sensor one 304, the wires of the test piece stress sensor two 305 and the wires of the test piece stress sensor three 306 are bound into a bundle and led to the outside of the middle frame 302.

[0076] Third step, fixing solid test piece 50: Put solid test piece 50 into test piece box one 3031 and stick to the bottom wall and side wall of test piece box one 3031, stick test piece box two 3032 to solid test piece 50 and test piece box one 3031, and fix test piece box one 3031 and test piece box two 3032 with bolts.

[0077] Fourth step, fixing test piece frame 303: Install clamping plate 312 on the inner bottom of middle frame 302, put test piece frame 303 on the upper side of clamping plate 312 in middle frame 302, insert clamping plate 312 on the left side, right side and back side of test piece frame 303, insert tightening plate 314 between the left and right sides of the front side of middle frame 302, fix right clamping plate 312 with tightening screw one 313 to ensure the left and right fixation of test piece frame 303 and middle frame 302, and fix tightening plate 314 clamping plate 312 with tightening screw two 315 to ensure the front and back fixation of test piece frame 303 and middle frame 302.

[0078] Fifth step, fixing middle frame 302: Insert the combination of middle frame 302 and test piece frame 303 into outer frame 301, and keep the bottom of middle frame 302 in contact with longitudinal beam one 3013 of outer frame 301.

[0079] Sixth step, connecting test piece stress transmitter 311: Put test piece stress transmitter 311 into device bin two 310, and connect the wires of the bound test piece stress sensor with the wires of test piece stress transmitter 311 one by one.

[0080] Tooth stress transmitter 106 and test piece stress transmitter 311 are the same, both have a battery and a communication module. The battery is built-in, and in the preferred example, the battery is a rechargeable battery. The communication module has a chip, a code program and a basic circuit, and can transmit data to complete the data transmission between the corresponding sensor and the server. The server is a device for monitoring and displaying the sensor, which is generally a computer.

[0081] In the preferred example, the communication module is a Bluetooth module. The Bluetooth module has low cost, integrates the chip and peripheral hardware circuit, develops the required built-in program, and transmits data through the relevant interface and control device. The battery of the transmitter supplies power to the Bluetooth module itself, and when the corresponding sensor generates load change, the transmitter transmits data wirelessly to the server through the Bluetooth module.

[0082] The transmitter has a built-in battery, and does not need an external power supply to supply power to the corresponding sensor through wires. Similarly, the transmitter uses a wireless transmission method to transmit signals to the server, and does not need to transmit data to the control device through wires. During the rotation of cutter head 10, the relative positions of tooth stress transmitter 106 and the corresponding sensor, and the relative positions of test piece stress transmitter 311 and the corresponding sensor remain unchanged, ensuring the stability of data measurement.

[0083] In the solid test piece rotary cutting test, the cutter teeth 20 contact and interact with the solid test piece 50, with rotation and translation of the cutter head 10, part of the structure of the cutter teeth 20 enters the inside of the solid test piece 50, so that a part of the structure of the solid test piece 50 is destroyed to gradually form a cutting groove. The rotating shaft 403 keeps a certain distance from the solid test piece 50, and the cutter head 10 also keeps a certain distance from the solid test piece 50, so that the cutter head 10 does not contact the solid test piece 50 in the rotary cutting test of the solid test piece 50.

[0084] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing examples, or make equivalent replacement for part or all of the technical features, and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A solid object knife tooth peeling test apparatus, characterized by: The utility model provides a cutting device, including cutter head, cutter tooth, mobile platform and fixed support, the cutter head is located mobile platform below and is rotatedly connected with mobile platform through pivot, mobile platform is used to drive cutter head translation and rotation, the cutter head is discoid structure, the outer ring of cutter head is radially arranged with a plurality of cutter teeth, and the blade of cutter tooth projects from the cutter head, the blade of cutter tooth is contacted with solid test piece during rotary cutting test, and the solid test piece is located inside fixed support, and the fixed support is located below mobile platform and keeps fixed interval with mobile platform, the cutter head includes shaft hub, support arm, device bin one and tooth stress transmitter, the shaft hub has shaft hole, and the pivot of mobile platform passes through shaft hole and is fixed with shaft hub, support arm is radially arranged on the outer wall of shaft hub and is connected with the outer wall of shaft hub, and each support arm has the inner bin of installing cutter tooth, device bin one is arranged between two adjacent support arms, and tooth stress transmitter is installed in device bin one, the cutter tooth includes tooth seat, tooth core and tooth stress sensor, the tooth seat is embedded in the inner bin of cutter head and is fixed, the tooth core is embedded in the inside of tooth seat and is fixed, the bottom surface and the adjacent two side surfaces of tooth core are respectively provided with tooth stress sensor for detecting the stress of tooth core in XYZ three directions between tooth seat, three tooth stress sensors are all installed on tooth seat and are attached to tooth core, and three tooth stress sensors are connected with corresponding tooth stress transmitter through wire, the rest side surface of tooth core is provided with grid between tooth seat and makes tooth core firm and fixed, the support arm includes support arm and test piece support, the front side of support arm has cutter head entrance, the rear side of support arm has cutter head exit, the test piece support is arranged inside support arm, the solid test piece is arranged inside test piece support, the front side and the top side of test piece support are all hollow structure in the middle, and the hollow parts are communicated, one side, bottom and rear side of test piece support are respectively provided with test piece stress sensor for detecting the stress of solid test piece in XYZ three directions between support arm, three test piece stress sensors are all installed on support arm and are attached to test piece support, and three test piece stress sensors are connected with test piece stress transmitter through wire, and test piece stress transmitter is arranged on support arm, the other side of test piece support is provided with top tight screw one between support arm, and the front side of test piece support is provided with top tight screw two between support arm, and top tight screw one makes test piece support firm and fixed left and right, and top tight screw two makes test piece support firm and fixed front and rear, the cutter head includes side sealing plate and outer sealing plate, the side sealing plate is located at both sides of cutter head and is connected with support arm, and two adjacent support arms are connected through outer sealing plate at the end away from shaft hub, and the space of accommodating device bin one is formed between two support arms. The side sealing plate is an integral structure or a combined structure. The number of support arms is two or more, and the number of device bins is two or more. The tooth stress sensor is installed on the tooth seat by bolts, the inner side of the tooth seat is provided with an inner seat fixing ring at the position of the tooth stress sensor, the tooth stress sensor is located inside the inner seat fixing ring, and the height of the inner seat fixing ring is lower than the height of the tooth stress sensor.

2. The solid object knife-tooth peeling test apparatus of claim 1, wherein, ​ 3. The solid object knife-tooth peeling test apparatus of claim 2, wherein, ​ 4. The solid object knife-tooth peeling test apparatus of claim 1, wherein, ​ 5. The solid object knife-tooth peeling test apparatus of claim 1, wherein, ​ 6. The solid object knife-tooth peeling test apparatus of claim 1, wherein, The mobile platform comprises a motor, a gear box, a rotating shaft, a platform support and a guide rail, the motor and the gear box are respectively installed on the platform support, the output end of the motor is connected with the input end of the gear box, the output end of the gear box is connected with the input end of the rotating shaft, the output end of the rotating shaft is connected with the cutter head, the platform support is slidably connected with the guide rail, and the guide rail is fixed on the test site.

7. The solid object knife-tooth peeling test apparatus of claim 1, wherein, The support frame comprises an outer frame and a middle frame, the middle frame is embedded in the inner part of the outer frame, the test piece frame is arranged in the inner part of the middle frame, and the three test piece stress sensors are all installed on the middle frame through bolts.

8. The solid object knife-tooth peeling test apparatus of claim 7, wherein, Inner fixed rings are arranged in the inner part of the middle frame at positions corresponding to the test piece stress sensors, the test piece stress sensors are located in the inner part of the inner fixed rings, and the height of the inner fixed rings is lower than the height of the test piece stress sensors.

9. The solid object knife-tooth peeling test apparatus of claim 7, wherein, The rear side of the outer frame is provided with a device bin two, and the test piece stress transmitter is installed in the device bin two.

10. The solid object knife-tooth peeling test apparatus of claim 1, wherein, The test piece frame comprises a test piece box one and a test piece box two, the test piece box one and the test piece box two are connected, the solid test piece is located in the internal space formed by the test piece box one and the test piece box two and closely adheres to the test piece box one and the test piece box two, and the test piece box one and the test piece box two are both provided with a clamping plate between the corresponding test piece stress sensors.

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