CN118857998B - Compression testing machine and testing method with adjustable rock disintegration strain energy release rate - Google Patents
Compression testing machine and testing method with adjustable rock disintegration strain energy release rate Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 105
- 239000011435 rock Substances 0.000 title claims abstract description 69
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- 238000007906 compression Methods 0.000 title claims abstract description 37
- 238000003825 pressing Methods 0.000 claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 13
- 239000003921 oil Substances 0.000 claims description 37
- 238000013016 damping Methods 0.000 claims description 25
- 230000007246 mechanism Effects 0.000 claims description 17
- 238000012669 compression test Methods 0.000 claims description 4
- 239000010720 hydraulic oil Substances 0.000 claims description 4
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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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- 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
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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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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- 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
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
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Abstract
本发明涉及岩石崩解应变能释放率可调节式压缩试验机和试验方法，属于土工试验领域。岩石崩解应变能释放率可调节式压缩试验机通过加载活塞下推调距活塞和加载板向下运动，加载板对承载横梁施压，使承载横梁向下对框架进行施压，使框架保持下压过程保持承载横保持接触，封闭外框的上方开口，从而防止岩石碎块从上方飞溅出，框架可通过滑套和第三弹簧顺利下压，使外框可顺利向下运动，同时使上夹具可持续向下运动，使上夹具可对下夹具上的岩石试件进行加压崩解试验作业，并且试验过程还可通过外框对试验区域进行封闭，从而防止岩石崩解后的碎块飞溅，不仅可减少试验过程的污染面积，而且提升了试验的安全性，防止伤人，降低后续清理难度。
The invention relates to a rock disintegration strain energy release rate adjustable compression testing machine and a test method, and belongs to the field of geotechnical testing. The rock disintegration strain energy release rate adjustable compression testing machine pushes down the distance adjustment piston and the loading plate through the loading piston, and the loading plate presses the bearing crossbeam, so that the bearing crossbeam presses the frame downward, so that the frame keeps the bearing crossbeam in contact during the pressing process, and closes the upper opening of the outer frame, thereby preventing rock fragments from splashing out from the top. The frame can be smoothly pressed down by the sliding sleeve and the third spring, so that the outer frame can move downward smoothly, and at the same time, the upper clamp can move downward continuously, so that the upper clamp can perform a pressurized disintegration test operation on the rock specimen on the lower clamp, and the test area can also be closed by the outer frame during the test process, so as to prevent the fragments after rock disintegration from splashing, which can not only reduce the pollution area during the test process, but also improve the safety of the test, prevent injuries, and reduce the difficulty of subsequent cleaning.
Description
Technical Field
The invention relates to the technical field of geotechnical tests, in particular to a compression testing machine and a testing method with an adjustable rock disintegration strain energy release rate.
Background
The rock collapse is a common geological disaster in the high mountain gorge valley area and the open pit coal mine, the disintegration characteristics of the rock under different strain energy release rates are studied to have important engineering value for disaster prevention and control, the key of changing the rock strain energy release rate is to adjust the rigidity of a compression tester, and the rigidity of the tester is related to the material property and the machine body design, so the rigidity of the tester on the market at present cannot be changed after the tester goes out of the field, the adjustment of the rock strain energy release rate cannot be realized, and when a plurality of test blocks are tested, the test block waste remained on the lower pressing plate can influence the placement of the next test block, so the lower pressing plate needs to be cleaned and the test block waste is cleaned and collected, the test block waste is mostly crushed, the collection is troublesome, and the rock is broken and flies in disorder during the pressure test, so that the crushed block due to the heavy compression collapse possibly damages test personnel on one side, and has great potential safety hazards. Moreover, the existing testing machine cannot realize the adjustment of the loading rigidity of the testing machine by integrally combining the adjustment loading interval and the electromagnetic liquid damping technology, and the application scene is limited. Therefore, it is important to develop a new compression tester with adjustable rock disintegration strain energy release rate to solve the above problems.
Disclosure of Invention
This section is intended to outline some aspects of embodiments of the application and to briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section as well as in the description of the application and in the title of the application, which may not be used to limit the scope of the application.
The present invention has been made in view of the above and/or problems with existing geotechnical tests.
Therefore, the technical problem to be solved by the invention is that the rigidity of the commercial testing machine cannot be changed after the testing machine leaves a field, the adjustment of the rock strain energy release rate cannot be realized, and when a plurality of test blocks are tested, the test block waste remained on the lower pressing plate can influence the placement of the next test block, so that the lower pressing plate needs to be cleaned and the test block waste is cleaned and collected, the test block waste is in the shape of fragments, the collection is more troublesome, and the rock is broken and scattered when the pressure test is carried out, so that the fragments broken out by the heavy pressure possibly damage test personnel on one side, and the problem of great potential safety hazard exists. Meanwhile, the existing testing machine cannot integrally combine the adjusting loading interval and the electromagnetic liquid damping technology to realize adjusting of the loading rigidity of the testing machine, the interval cannot be effectively adjusted in the test, energy dissipation is realized, and a test scene is limited.
In order to achieve the above object, a first aspect of the present invention provides the following technical solutions:
The compression testing machine with the adjustable rock disintegration strain energy release rate comprises a testing mechanism and a testing auxiliary mechanism. The test mechanism comprises a bearing assembly, a plurality of stand columns, an upper cross beam, a pressing assembly, a bearing cross beam and an upper clamp, wherein the upper end of the bearing assembly is fixedly connected with an adjusting damping piston, the stand columns are fixed above the bearing assembly, the upper cross beam is fixedly connected with the top ends of the stand columns, the pressing assembly is fixedly arranged in the middle of the upper cross beam, the bearing cross beam is fixedly connected with the top ends of the adjusting damping pistons, and the middle of the lower part of the bearing cross beam is fixedly connected with the upper clamp. The test auxiliary mechanism comprises a threaded driving assembly, a roller body, a driving rod, a rebound assembly, an elastic assembly, an outer frame, a turnover assembly, a bearing frame, a lower clamp, a clamping assembly and a pressurizing plate, wherein two ends of the roller body are fixed between the bearing assembly and the upper cross beam, the roller body is fixed above the threaded driving assembly and provided with an arc groove, the driving rod is in sliding connection with the arc groove, the rebound assembly is fixedly connected with one end of the driving rod and is fixedly connected below the upper cross beam, the rebound assembly is arranged on the lower pressing assembly and can slide on a plurality of upright posts, the elastic assembly is arranged on the upright posts and is arranged below the bearing cross beam in a sliding mode, the bottom end of the elastic assembly is fixedly connected above the bearing assembly, the outer frame is fixed below the elastic assembly, the turnover assembly is fixedly connected with the bearing assembly, two ends of the turnover assembly are fixedly connected with the side wall of the outer frame, two sides of the bearing frame are respectively provided with a fixing opening, the clamping assembly is arranged in the fixing opening, and the pressurizing plate is in lap joint with the clamping assembly and is fixedly connected to the side wall of the outer frame.
In other words, the rock disintegration strain energy release rate adjustable compression testing machine comprises a testing mechanism, a test assisting mechanism and a test assisting mechanism, wherein the test mechanism comprises a bearing assembly and a plurality of stand columns fixed above the bearing assembly, the top ends of the stand columns are fixedly connected with the same upper cross beam, the middle part of the upper cross beam is fixedly provided with a pressing assembly, the upper part of the bearing assembly is fixedly connected with an adjusting damping piston, the top ends of the adjusting damping piston are fixedly connected with the same bearing cross beam, the middle part of the lower part of the bearing cross beam is fixedly connected with an upper clamp, the test assisting mechanism comprises a threaded driving assembly and a roller body fixed above the threaded driving assembly, two ends of the threaded driving assembly are fixed between the bearing assembly and the upper cross beam, arc grooves are formed in the roller body, a driving rod is connected to the inner part of the arc grooves in a sliding mode, one end of the driving rod is fixedly connected with a rebound assembly, the rebound assembly is fixedly connected to the lower part of the upper cross beam, the rebound assembly is arranged on the pressing assembly in a sliding mode, the upper cross beam is fixedly connected with the upper side of the lower compression assembly, the rebound assembly is connected with the adjusting damping piston in a sliding mode, the top ends of the damping piston are fixedly connected with the upper cross beam, the upper clamp is fixedly arranged on the middle part of the upper cross beam, the lower middle part of the bearing assembly is fixedly connected with the upper clamp, the upper clamp is fixedly, the upper clamp is connected to the lower clamp is fixedly, the upper side of the upper frame is fixedly connected to the upper frame is connected to the compression frame, the upper frame is fixedly connected to the upper frame, the compression frame is fixedly connected to the upper frame, the upper frame and the upper frame is fixedly connected to the upper frame.
As a further scheme of the invention, the bearing assembly comprises a base, a lower cross beam is fixedly connected above the base, and the lower cross beam is fixedly connected with the bottom end of the upright post.
As a further scheme of the invention, a cavity seat is fixedly connected above the base, and a drawing box is arranged in the cavity seat.
The elastic assembly comprises a frame, wherein the frame is erected below a bearing beam, the frame is fixedly connected above an outer frame, sliding sleeves are fixedly connected to four corners of the frame, the sliding sleeves are slidably connected to upright posts, a second spring is fixedly connected to the lower part of the sliding sleeve, and the second spring is fixedly connected to a lower beam.
The overturning assembly comprises a rotating shaft, wherein the rotating shaft is rotationally connected to a fixed block through a bearing, and the fixed block is fixedly connected to the cavity seat;
The rotary shaft is fixedly connected with a cylinder, and the cylinder is fixedly connected to the bearing frame;
the two ends of the rotating shaft are fixedly connected with rope reels, torsion springs are fixed between the rope reels and the fixed blocks, ropes are wound on the rope reels, and one ends, extending out of the rope reels, of the ropes are fixedly connected with the outer frame.
The clamping assembly comprises a hole sleeve, wherein the hole sleeve is fixedly connected to the cavity seat, an inserting rod is connected in the hole sleeve in a sliding manner, and one end of the inserting rod is inserted into the fixing opening;
The one end fixedly connected with gyro wheel of fixed mouth is kept away from to the inserted bar, gyro wheel and pressurization board overlap joint, one side fixedly connected with third spring of gyro wheel, the one end and the hole cover fixed connection of gyro wheel are kept away from to the third spring, the third spring cover is established outside the inserted bar.
As a further scheme of the invention, the rebound assembly comprises a supporting bar which is fixedly connected with the driving rod, a first spring is fixedly connected above the supporting bar, and the top end of the first spring is fixedly connected with the upper cross beam.
The screw driving assembly comprises a screw, the roller body is fixedly connected above the screw, the screw is rotationally connected to the upper cross beam and the base through a bearing, a nut is connected with the screw through external threads, one side of the nut is fixedly connected with a connecting plate, and the connecting plate is erected above the frame;
Arc strips are fixedly connected to two sides of the nut and slide on the upright posts;
The threads of the screw rod are opposite to the arc-shaped grooves.
As a further scheme of the invention, the pressing component comprises a loading piston, the loading piston is fixedly connected with the middle part of an upper cross beam, the bottom end of the loading piston is fixedly connected with a distance-adjusting cross beam, an adjusting groove is formed below the distance-adjusting cross beam, a loading plate is connected in the adjusting groove in a sliding manner, and the loading plate is fixed on the distance-adjusting cross beam through bolts.
As a further scheme of the invention, the damping adjusting piston comprises a sleeve, the sleeve is fixedly connected to the lower cross beam, a push rod is arranged in the sleeve in a penetrating way, the top end of the push rod is fixedly connected to the lower part of the bearing cross beam, and an oil return bin, an oil inlet bin and an oil bin are arranged in the sleeve and are communicated through a hydraulic valve.
The second aspect of the present invention provides the following technical solution:
A compression test method with adjustable rock disintegration strain energy release rate adopts a compression test machine with adjustable rock disintegration strain energy release rate in a specific embodiment according to a first aspect of the invention. The test method comprises the steps of firstly placing a rock test piece, selecting an upper clamp and a lower clamp according to experimental requirements, placing the rock test piece on the lower clamp, uniformly smearing vaseline on the upper surface and the lower surface of the rock test piece to prevent experimental errors caused by friction force, secondly adjusting the distance of a loading plate according to experimental rigidity requirements, finely adjusting a loading piston to enable the loading plate to be fully contacted with a bearing cross beam, thirdly rapidly reducing, increasing the flow of the loading piston to enable the distance between the upper clamp and the rock test piece to be a preset distance (for example, the vicinity of 2 mm), fourthly finely adjusting rigidity, adjusting the viscosity of electromagnetic liquid in a damping piston according to experimental requirements, fifthly loading, selecting loading speed according to experimental requirements, unloading after the rock disintegration characteristics are obtained, recovering hydraulic oil in the loading piston, closing a hydraulic valve, injecting the electromagnetic liquid into an oil inlet bin, closing a motor after the loading plate and the bearing cross beam are separated from contact, and completing the test.
Compared with the prior art, the invention has the beneficial effects that:
1. According to the compression testing machine with the adjustable rock disintegration strain energy release rate, the loading piston pushes down the distance adjusting piston and the loading plate to move downwards, the loading plate applies pressure to the bearing cross beam, so that the bearing cross beam applies pressure downwards to the frame, the frame keeps the bearing cross beam in the downward pressing process and keeps contact, the upper opening of the outer frame is closed, therefore, rock fragments are prevented from splashing out from the upper side, the frame can be smoothly pressed downwards through the sliding sleeve and the third spring, the outer frame can smoothly move downwards, meanwhile, the upper clamp can continuously move downwards, the upper clamp can conduct compression disintegration testing operation on rock test pieces on the lower clamp, the testing process can also seal a testing area through the outer frame, therefore, the splashing of fragments after rock disintegration can be effectively prevented, the pollution area of the testing process can be reduced, the safety of the test is improved, hurt people are prevented, and the subsequent cleaning difficulty is reduced;
2. According to the rock disintegration strain energy release rate adjustable compression testing machine, a loading piston is used for resetting upwards, a distance-adjusting beam moves upwards until the distance-adjusting beam pushes a supporting bar upwards, the supporting bar drives a driving rod to move, the driving rod controls a roller body to drive a screw rod to rotate through an arc groove, the screw rod drives a nut to move downwards, the nut drives a connecting plate to move downwards, the connecting plate drives an outer frame to move downwards through a frame, the outer frame is sleeved on a cavity seat to move downwards until a lower clamp is exposed, the outer frame moves to drive a pressurizing plate to move downwards, when the pressurizing plate is separated from a roller, the outer frame moves downwards to drive a rope to pull a rope disc to rotate, the rope disc drives a rotating shaft and a roller body to rotate, the roller body drives a bearing frame to turn over, broken stones disintegrated by the bearing frame enter a drawing box to be collected, so that stone cleaning operation can be automatically completed, cleaning difficulty is reduced, and test efficiency is improved;
3. According to the rock disintegration strain energy release rate adjustable compression testing machine, the structure with adjustable loading spacing is organically combined with the electromagnetic liquid damping technology, so that the adjustment of the loading spacing is realized, and the energy dissipation can be realized rapidly. Electromagnetic liquid is filled in the oil return bin, the oil inlet bin and the oil bin, when the push rod moves forwards, the pressure of the oil inlet bin is high Yu Huiyou bins, the hydraulic valve is opened, the electromagnetic liquid flows into the oil return bin from the oil inlet bin, so that energy dissipation is realized, the damping of the electromagnetic liquid in the oil return bin, the oil inlet bin and the oil bin can be adjusted, the loading rigidity is further adjusted, the operation is simple, and the rock disintegration characteristics under different strain energy release rates are obtained by adjusting the rigidity of the tester during loading.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein:
fig. 1 is a schematic view of a three-dimensional structure of a compression testing machine with an adjustable rate of release of strain energy during rock disintegration according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a connection between a screw driving assembly and an elastic assembly in a compression testing machine with an adjustable rock disintegration strain energy release rate according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a connection between a bearing assembly and an adjusting damping piston in a compression testing machine with an adjustable rate of release of rock disintegration strain energy according to an embodiment of the present invention.
Fig. 4 is a schematic structural view of a vertical column in a compression testing machine with an adjustable rate of release of rock disintegration strain energy according to an embodiment of the present invention.
Fig. 5 is a schematic diagram of a perspective structure of an elastic component in a compression testing machine with an adjustable rate of release of rock disintegration strain energy according to an embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a three-dimensional cross section of an outer frame in a compression testing machine with an adjustable rate of release of rock disintegration strain energy according to an embodiment of the present invention.
Fig. 7 is an enlarged schematic view of a structure of a compression testing machine with an adjustable rate of release of strain energy during disintegration of rock according to an embodiment of the present invention.
Fig. 8 is an enlarged schematic view of a structure of a compression testing machine with an adjustable rate of release of strain energy during disintegration of rock according to an embodiment of the present invention.
Fig. 9 is a schematic diagram of a three-dimensional structure of a screw driving assembly in a compression testing machine with an adjustable rate of release of strain energy during rock disintegration according to an embodiment of the present invention.
Fig. 10 is a schematic diagram of a structure of a pressing component in a compression testing machine with an adjustable rate of release of strain energy during rock disintegration according to an embodiment of the present invention.
Fig. 11 is a schematic structural diagram of a section of an adjustable damping piston in a compression testing machine with an adjustable rate of release of rock disintegration strain energy according to an embodiment of the present invention.
100, A test mechanism; 101, a bearing assembly; 101a, base, 101b, lower cross beam, 101c, cavity seat, 101d, drawer, 102, adjusting damping piston, 102a, sleeve, 102b, oil bin, 102c, push rod, 102d, oil return bin, 102e, hydraulic valve, 102f, oil inlet bin, 103, upright post, 104, load cross beam, 105, pressing down component, 105a, loading piston, 105b, distance adjusting cross beam, 105c, adjusting groove, 105d, loading plate, 106, upper cross beam, 107, upper clamp, 200, test auxiliary mechanism, 201, screw driving component, 201a, screw, 201b, nut, 201c, arc bar, 201d, connecting plate, 202, roller body, 203, rebound component, 203a, support bar, 203b, first spring, 204, driving rod, 205, elastic component, 205a, frame, 205b, sliding sleeve, 205c, second spring, 206, outer frame, 207, turnover component, 207a, rotating shaft, 207b, rope reel, 207c, rope, 207d, fixed block, 207e, 208 f, 208, barrel, bearing hole, 208, 210, slot, and three-shaped hole.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present invention is not limited to the specific embodiments disclosed below.
In the following detailed description of the embodiments of the present invention, the cross-sectional view of the device structure is not partially enlarged to a general scale for the convenience of description, and the schematic is merely an example, which should not limit the scope of the present invention. In addition, the three-dimensional dimensions of length, width and depth should be included in actual fabrication.
Further still, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Example 1
As shown in fig. 1-6, the present invention provides a technical solution: the compression testing machine with adjustable rock disintegration strain energy release rate comprises a testing mechanism 100, which comprises a bearing component 101 and a plurality of upright posts 103 (for example, 4) fixed above the bearing component 101, wherein the bearing component 101 comprises a base 101a, two lower cross beams 101b are fixedly connected above the base 101a, the lower cross beams 101b are fixedly connected with the bottom ends of the two upright posts 103, a cavity seat 101c is fixedly connected above the base 101a, the cavity seat 101c is arranged in a hollow manner, the drawer 101d can be used for storing the drawer 101d, the drawer 101d is arranged in the cavity seat 101c, the crushed stone can be collected through the drawer 101d, the drawer 101d can be pulled out from the cavity seat 101c, so that the crushed stone is convenient to clean, the top ends of the upright posts 103 are fixedly connected with the same upper cross beam 106, the lower pressing component 105 is fixedly arranged in the middle of the upper cross beam 106, the pressing component 105 comprises a loading piston 105a, the loading piston 105a is fixedly connected with the middle part of an upper beam 106 by injecting hydraulic oil into the loading piston 105a so as to push down a distance adjusting beam 105b to realize movement, the bottom end of the loading piston 105a is fixedly connected with the distance adjusting beam 105b, an adjusting groove 105c is formed below the distance adjusting beam 105b, a loading plate 105d is slidingly connected in the adjusting groove 105c, the loading plate 105d is fixedly connected with the distance adjusting beam 105b through bolts, the loading plate 105d can slide in the adjusting groove 105c, the loading plate 105d can slide left and right on the distance adjusting beam 105b, the rough adjustment of loading rigidity can be realized by adjusting the distance between the two loading plates 105d, when the distance between the loading plates 105d is reduced, the loading rigidity is reduced when the distance between the loading plates 105d is increased, two adjusting damping pistons 102 are fixedly connected above the bearing component 101, the top ends of the two adjusting damping pistons 102 are fixedly connected with the same bearing cross beam 104, strain energy is stored in the bearing cross beam 104, the bearing cross beam 104 releases the strain energy at the moment of rock destruction, deformation is recovered, the adjusting damping pistons 102 are driven to move, the adjusting damping pistons 102 consume the strain energy so as to realize the technical aim of adjusting the strain energy release rate, an upper clamp 107 is fixedly connected with the middle part below the bearing cross beam 104, and
The test auxiliary mechanism 200 comprises two screw thread driving components 201 and a roller body 202 fixed above the screw thread driving components 201, wherein two ends of the two screw thread driving components 201 are fixed between a bearing component 101 and an upper beam 106, an arc-shaped groove 212 is formed in the roller body 202, a driving rod 204 is connected in a sliding manner in the arc-shaped groove 212, the arc surface of the arc-shaped groove 212 is arranged, the driving rod 204 can extrude and control the roller body 202 to realize rotary motion, one end of the driving rod 204 is fixedly connected with a rebound component 203, the rebound component 203 is fixedly connected below the upper beam 106, the rebound component 203 is erected on a pressing component 105, the rebound component 203 slides on two upright posts 103, a plurality of upright posts 103 slide on an elastic component 205, the elastic component 205 comprises a frame 205a, the frame 205a is erected below the bearing beam 104, the frame 205a is fixedly connected above the outer frame 206, four corners of the frame 205a are fixedly connected with sliding sleeves 205b, the sliding sleeve 205b is slidingly connected on the upright post 103, the sliding sleeve 205b is guided by the upright post 103, the sliding sleeve 205b can slide up and down on the surface of the upright post 103, the frame 205a moves up and down stably, a second spring 205c is fixedly connected below the sliding sleeve 205b, the frame 205a can be kept by the second spring 205c and simultaneously supports the outer frame 206, the elastic force of the second spring 205c can push the frame 205a and the outer frame 206 to return up and down smoothly, the second spring 205c is fixedly connected on the lower cross beam 101b, the elastic component 205 is erected below the bearing cross beam 104, the bottom end of the elastic component 205 is fixedly connected above the bearing component 101, an outer frame 206 is fixedly connected below the elastic component 205, the test area can be closed by the outer frame 206, thereby playing a role of protecting broken stone from splashing hurting people, and a transparent window is arranged on the outer frame 206, thereby make things convenient for test personnel to observe experimental condition, with the both ends fixed connection of upset subassembly 207 on the both sides wall of frame 206, upset subassembly 207 fixed connection is on carrying assembly 101, fixedly connected with carries frame 210 on the upset subassembly 207, carry frame 210 can play the effect of collecting the rubble, reduce the area of splashing of rubble, carry frame 210 upset moreover is convenient to pour the rubble into completely taking out box 101d, fixedly connected with down anchor clamps 211 in the carry frame 210, fixed orifices 213 have all been seted up to the both sides of carrying frame 210, be equipped with clamping component 208 in the fixed orifices 213, clamping component 208 and pressurization board 209 overlap joint, pressurization board 209 fixed connection is on the lateral wall of frame 206.
In this embodiment, the loading piston 105a pushes down the distance adjusting piston and the loading plate 105d moves downward, the loading plate 105d applies pressure to the carrier beam 104, so that the carrier beam 104 applies pressure to the frame 205a downward, the frame 205a keeps the carrier beam in contact in the pressing down process, the upper opening of the outer frame 206 is closed, and therefore, the rock fragments are prevented from splashing out from above, the frame 205a can be smoothly pressed down through the sliding sleeve 205b and the third spring 208b, the outer frame 206 can be smoothly moved downward, meanwhile, the upper clamp 107 can be continuously moved downward, the upper clamp 107 can perform a compression disintegration test operation on the rock test piece on the lower clamp 211, and the test area can be closed through the outer frame 206, so that the fragments after rock disintegration can be effectively prevented from splashing, the pollution area in the test process can be reduced, the safety of the test is improved, the injury is prevented, and the subsequent cleaning difficulty is reduced.
Example 2
Referring to fig. 7-10, it is derived that the rebound assembly 203 includes a supporting bar 203a, the force application distance can be prolonged by the supporting bar 203a, so that the distance-adjusting beam 105b can smoothly push up the supporting bar 203a to drive the driving rod 204 to move, the supporting bar 203a is fixedly connected with the driving rod 204, two first springs 203b are fixedly connected above the supporting bar 203a, the supporting bar 203a can be smoothly driven to return downwards by the elastic force of the first springs 203b, and the top ends of the two first springs 203b are fixedly connected with the upper beam 106;
The clamping assembly 208 comprises a hole sleeve 208c, the hole sleeve 208c is fixedly connected to the cavity seat 101c, an inserted rod 208d is slidably connected in the hole sleeve 208c, the inserted rod 208d can be guided by the hole sleeve 208c, the inserted rod 208d can slide stably and smoothly enter the fixed opening 213, one end of the inserted rod 208d is inserted into the fixed opening 213, one end of the inserted rod 208d, which is far away from the fixed opening 213, is fixedly connected with a roller 208a, friction resistance between the inserted rod 208d and the pressurizing plate 209 can be reduced through the roller 208a, the roller 208a can move smoothly, the roller 208a is lapped with the pressurizing plate 209, an inclined plane is arranged above the pressurizing plate 209, the roller 208a can smoothly enter the surface of the pressurizing plate 209, the pressurizing plate 209 can smoothly extrude the roller 208a and the inserted rod 208d, the inserted rod 208d is fixed to the bearing frame 210 through the fixed opening 213, one side of the roller 208a is fixedly connected with a third spring 208b, the roller 208a can be driven to reset through the third spring 208b, the roller 208a can drive the inserted rod 208d to deviate from the fixed opening 210, the roller 208d can be driven by the roller 208d to deviate from the fixed opening 213, and the third spring 208b can be smoothly connected with the third spring 208b, and the third spring 208b can be arranged outside the fixed outside the hole 208 b;
The screw driving assembly 201 comprises a screw 201a, a roller body 202 is fixedly connected above the screw 201a, the screw 201a is rotationally connected to the upper beam 106 and the base 101a through two bearings, the screw 201a can be kept to smoothly rotate through the bearings, a nut 201b is connected to the external thread of the screw 201a, the screw 201b can smoothly drive a connecting plate 201d to press a frame 205a to move through the screw 201a and the screw 201b in a threaded transmission mode, one side of the nut 201b is fixedly connected with the connecting plate 201d, the connecting plate 201d is erected above the frame 205a, two sides of the nut 201b are fixedly connected with arc-shaped strips 201c, the arc-shaped strips 201c can slide on the upright post 103, the nut 201b can stably move up and down, the arc-shaped strips 201c slide on the upright post 103, the threads of the screw 201a are opposite to the arc-shaped grooves 212, the driving rod 204 moves upwards and extrudes the roller body 202 through the arc-shaped grooves 212 to rotate, and the roller body 202 can drive the screw 201a to rotate, and the screw 201a can drive the nut 201b to smoothly move downwards;
The turnover assembly 207 comprises a rotating shaft 207a, the rotating shaft 207a is rotationally connected to two fixed blocks 207d through two bearings, the rotating shaft 207a can keep stable rotation through the bearings, the bearing frame 210 can smoothly rotate, the two fixed blocks 207d are fixedly connected to the cavity seat 101c, a cylinder 207e is fixedly connected to the rotating shaft 207a, the cylinder 207e is fixedly connected to the bearing frame 210, rope reels 207b are fixedly connected to two ends of the rotating shaft 207a, torsion springs 207f are fixedly connected between the rope reels 207b and the fixed blocks 207d, the rope reels 207b can be driven to rotate to wind ropes 207c through torsion of the torsion springs 207f, the rotating shaft 207a and the bearing frame 210 can be driven to turn and reset, ropes 207c are wound on the rope reels 207b, the rope reels 207b can play a role of containing the ropes 207c, a reserved section of the contained ropes 207c can smoothly drive a pressurizing plate 209 to move downwards to be separated from the roller 208a, at the moment, one end of each rope 207c, which can stretch out of the rope reels 207b, can be directly realized, and the outer frame 206 is fixedly connected with one end of each rope reel 207 b.
In the embodiment, the loading piston 105a is reset upwards, the distance adjusting beam 105b moves upwards until the distance adjusting beam 105b pushes the supporting bar 203a upwards, the supporting bar 203a drives the driving rod 204 to move, the driving rod 204 controls the roller body 202 to drive the screw 201a to rotate through the arc groove 212, the screw 201a drives the nut 201b to move downwards, the nut 201b drives the connecting plate 201d to move downwards, the connecting plate 201d drives the outer frame 206 to move downwards through the frame 205a, the outer frame 206 is sleeved on the cavity seat 101c to move downwards until the lower clamp 211 is exposed, the outer frame 206 moves to drive the pressurizing plate 209 downwards, when the pressurizing plate 209 is separated from the roller 208a, the outer frame 206 moves downwards to drive the rope 207c to drive the rope 207b to rotate, the rope 207b drives the rotating shaft 207a and the barrel 207e to rotate, and the barrel 207e drives the bearing frame 210 to turn over, so that broken stones of the bearing frame 210 enter the suction box 101d to collect, thereby the cleaning operation of broken stones can be automatically completed, and the efficiency of the test is improved.
Example 3
Referring to fig. 11, it is derived that the damping piston 102 includes a sleeve 102a, the sleeve 102a is fixedly connected to the lower beam 101b, a push rod 102c is penetrated in the sleeve 102a, the top end of the push rod 102c is fixedly connected below the bearing beam 104, an oil return bin 102d, an oil inlet bin 102f and an oil inlet bin 102b are arranged in the sleeve 102a, and the oil return bin 102d and the oil inlet bin 102f are communicated through a hydraulic valve 102 e.
In the embodiment, electromagnetic liquid is filled in the oil return bin 102d, the oil inlet bin 102f and the oil bin 102b, when the push rod 102c moves forwards, the pressure of the oil inlet bin 102f is high Yu Huiyou bin 102d, the hydraulic valve 102e is opened, the electromagnetic liquid flows into the oil return bin 102d from the oil inlet bin 102f, so that energy dissipation is realized, and the electromagnetic liquid damping in the oil return bin 102d, the oil inlet bin 102f and the oil bin 102b can be adjusted, so that the fine adjustment of loading rigidity is realized, the operation is simple, and the rock disintegration characteristics under different strain energy release rates are obtained by adjusting the rigidity of a tester during loading.
In some embodiments, the rock test piece compression test may be performed by the following method: placing a rock test piece on a lower clamp 211, uniformly smearing vaseline on the upper and lower surfaces of the rock test piece to prevent test errors caused by friction force, adjusting the distance of a loading plate 105d and fixing the loading plate on a distance-adjusting beam 105b through bolts, then finely adjusting a loading piston 105a to enable the loading piston 105a to push the distance-adjusting beam 105b downwards to move, enabling the distance-adjusting beam 105b to drive the loading plate 105d to move downwards, enabling the loading plate 105d to be in contact with a bearing beam 104 downwards, enabling the bearing beam 104 to press a frame 205a downwards, enabling the frame 205a to drive an outer frame 206 to move downwards, increasing the flow of the loading piston 105a when the bearing beam 104 drives an upper clamp 107 to be in quick contact with the rock test piece, enabling the bearing beam 104 to drive the upper clamp 107 to quickly descend and apply pressure to the rock test piece to perform disintegration test operation, unloading after obtaining rock disintegration characteristics, recycling hydraulic oil in the loading piston 105a, closing the hydraulic valve 102e, injecting electromagnetic liquid into the oil inlet bin 102f, separating the loading plate 105d from the bearing beam 104, moving the distance-adjusting beam 105b upwards and pushing up the supporting bar 203a, driving the supporting bar 203a to drive the driving rod 204 to move, rotating the driving rod 204 to the extrusion roller 202 through the arc-shaped groove 212, driving the screw 201a to rotate by the roller 202, controlling the nut 201b to move downwards by the rotation of the screw 201a, driving the connecting plate 201d to move downwards by the nut 201b, pressing the frame 205a by the connecting plate 201d, driving the outer frame 206 to move downwards by the frame 205a, sleeving the outer frame 206 downwards in the cavity 101c, moving downwards by the outer frame 206, separating the pressing plate 209 from the roller 208a, stopping pressing the roller 208a by the pressing plate 209, driving the roller 208a to reset by the reset force of the third spring 208b, driving the inserting rod 208d to separate from the fixed opening 213 by the roller 208a, and the outer frame 206 moves downwards to drive the rope 207c to be gradually straightened, and the rope 207b is driven to rotate by continuously pulling the rope 207c, the rope 207b drives the rotating shaft 207a and the barrel 207e to rotate, and the barrel 207e drives the bearing frame 210 to overturn, so that the bearing frame 210 overturns to discharge internal broken stones into the suction box 101d, and the cleaning operation is completed.
It should be noted that the construction and arrangement of the application as shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters (e.g., temperature, pressure, etc.), mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in this application. For example, elements shown as integrally formed may be constructed of multiple parts or elements, the position of elements may be reversed or otherwise varied, and the nature or number of discrete elements or positions may be altered or varied. Accordingly, all such modifications are intended to be included within the scope of present application. The order or sequence of any process or method steps may be varied or re-sequenced according to alternative embodiments. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions may be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present applications. Therefore, the application is not limited to the specific embodiments, but extends to various modifications that nevertheless fall within the scope of the appended claims.
Furthermore, in an effort to provide a concise description of the exemplary embodiments, all features of an actual implementation may not be described (i.e., those not associated with the best mode presently contemplated for carrying out the invention, or those not associated with practicing the invention).
It should be appreciated that in the development of any such actual implementation, as in any engineering or design project, numerous implementation-specific decisions may be made. Such a development effort might be complex and time consuming, but would nevertheless be a routine undertaking of design, fabrication, and manufacture for those of ordinary skill having the benefit of this disclosure.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.
Claims (7)
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| CA2330431A1 (en) * | 2001-01-08 | 2002-07-08 | Stephen Norman Goodman | In situ shear strength test facility |
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| JP4260342B2 (en) * | 2000-05-29 | 2009-04-30 | 株式会社ブリヂストン | Method and apparatus for testing friction characteristics of elastic material |
| JP3754888B2 (en) * | 2000-11-17 | 2006-03-15 | キヤノン株式会社 | Process cartridge |
| JP3861149B2 (en) * | 2002-11-29 | 2006-12-20 | 独立行政法人産業技術総合研究所 | Geological structure and hydraulic modeling equipment |
| CN209356291U (en) * | 2018-01-29 | 2019-09-06 | 成都理工大学 | A protective device for a rock test |
| CN108240941B (en) * | 2018-03-06 | 2020-03-10 | 安徽理工大学 | Experimental device for be used for testing rock disturbance-relaxation effect |
| CN115034773A (en) * | 2021-03-07 | 2022-09-09 | 智慧式有限公司 | An unmanned autonomous restaurant system and intelligent terminal application |
| KR20230024457A (en) * | 2021-08-11 | 2023-02-21 | 주식회사 한국산업기술원 | Equipment, material, object, product, work, cleanup, treatment, facility, structure, drone, 3D printer, mobility, metaverse |
| CN113567185B (en) * | 2021-08-23 | 2023-09-05 | 杨柳 | Geological rock soil investigation intensity test sampling device |
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| CA2330431A1 (en) * | 2001-01-08 | 2002-07-08 | Stephen Norman Goodman | In situ shear strength test facility |
| CN102854525A (en) * | 2012-09-18 | 2013-01-02 | 中国科学院武汉岩土力学研究所 | Omnidirectional cataclastic rock mass deep hole installation and recovery device of microseismic unidirectional sensor |
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