CN108344763B - Unilateral nuclear magnetic resonance measuring instrument teaching system - Google Patents
Unilateral nuclear magnetic resonance measuring instrument teaching system Download PDFInfo
- Publication number
- CN108344763B CN108344763B CN201810155535.4A CN201810155535A CN108344763B CN 108344763 B CN108344763 B CN 108344763B CN 201810155535 A CN201810155535 A CN 201810155535A CN 108344763 B CN108344763 B CN 108344763B
- Authority
- CN
- China
- Prior art keywords
- box body
- fixed
- sliding
- rod
- plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000005481 NMR spectroscopy Methods 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000009434 installation Methods 0.000 claims abstract description 29
- 238000003825 pressing Methods 0.000 claims description 39
- 230000006835 compression Effects 0.000 claims description 26
- 238000007906 compression Methods 0.000 claims description 26
- 239000000523 sample Substances 0.000 claims description 18
- 230000009471 action Effects 0.000 claims description 7
- 238000001125 extrusion Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims 4
- 239000000428 dust Substances 0.000 abstract description 2
- 238000012545 processing Methods 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 2
- 230000001939 inductive effect Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012634 fragment Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N24/00—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects
- G01N24/08—Investigating or analyzing materials by the use of nuclear magnetic resonance, electron paramagnetic resonance or other spin effects by using nuclear magnetic resonance
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/04—Means for attachment of apparatus; Means allowing adjustment of the apparatus relatively to the stand
- F16M11/043—Allowing translations
- F16M11/046—Allowing translations adapted to upward-downward translation movement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon Stands for scientific apparatus such as gravitational force meters
- F16M11/02—Heads
- F16M11/18—Heads with mechanism for moving the apparatus relatively to the stand
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B23/00—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes
- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
- G09B23/18—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism
- G09B23/187—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics for electricity or magnetism for measuring instruments
Abstract
The invention provides a unilateral nuclear magnetic resonance measuring instrument teaching system which comprises a box body, a lifting device, a calibration device, a cover body and a locking device for preventing the cover body from being separated from the box body; the lifting device is arranged in the box body installation cavity and comprises a dial indicator, a support frame, a first lifting mechanism and a second lifting mechanism which are fixed on the wall of the box body; the calibrating device is arranged on the inner wall of the box body, is connected with the dial indicator and realizes the detachable connection of the dial indicator; the cover body can be attached to the outer surface of the box body and can prevent dust and water vapor from entering the box body from the outside, and the locking device is used for preventing the cover body from being separated from the box body in an unmanned mode. The invention adopts a two-stage lifting mode, which can not only quickly reach a set distance through a rodless cylinder, but also can be slowly adjusted through a screw rod; the whole lifting precision is ensured by using an external percentage meter, long-distance high-precision processing is not needed, and the cost is low; the operation is simple, the adjustment is flexible, and the obtained result is more accurate.
Description
Technical Field
The invention relates to the field of teaching equipment of colleges and universities, in particular to a unilateral nuclear magnetic resonance measuring instrument teaching system.
Background
The unilateral nuclear magnetic resonance measuring instrument is applied to the fields of Bopu, biomedicine, food, rubber materials and the like. The method has the advantages of simple equipment, low cost, strong portability, capability of realizing real-time nondestructive detection and the like, and has wide prospect.
Therefore, the single-sided nuclear magnetic resonance measuring instrument is also applied to the field of teaching instruments of large and medium schools besides the field of practical research and production. In the prior art, the single-side nuclear magnetic resonance measuring instrument for teaching needs to be matched with teaching, but the existing nuclear magnetic resonance measuring instrument has imperfect functions, so that the nuclear magnetic resonance measuring instrument applied to actual production cannot be directly taken for use.
Disclosure of Invention
The invention aims to solve the problem that the nuclear magnetic resonance measuring instrument applied to actual production is not complete enough in function, and provides a nuclear magnetic resonance measuring instrument teaching system aiming at the defects in the prior art.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a teaching system of a unilateral nuclear magnetic resonance measuring instrument comprises a box body, a lifting device, a calibrating device, a cover body and a locking device for preventing the cover body from being separated from the box body;
the lifting device is arranged in the box body installation cavity and comprises a dial indicator, a support frame, a first lifting mechanism and a second lifting mechanism which are fixed on the wall of the box body;
the support frame is an inverted L-shaped plate with a cross section, a threaded hole is formed in the vertical section, a measuring plate extending to the lower part of the dial indicator is further fixed on the support frame, and the measuring plate can be in contact with a probe rod of the dial indicator;
the first lifting mechanism and the second lifting mechanism are both positioned in the mounting cavity, the first lifting mechanism is a rodless cylinder, the rodless cylinder is fixed on the box body along the vertical direction through a bolt, and the second lifting mechanism is fixedly connected with a movable sliding block of the rodless cylinder;
the second lifting mechanism comprises a base, a screw rod and two sliding mounting blocks; the base is fixed on a movable slide block of the rodless cylinder, one end of the screw rod is vertically arranged on the base through a bearing, two sliding installation blocks are respectively provided with an installation hole for fixing the support frame, the two sliding installation blocks are respectively in sliding connection with the installation seat through a guide rod vertically fixed on the installation seat, the two sliding installation blocks are fixedly connected through a connecting plate, a threaded hole matched with the screw rod is formed in the connecting plate, and the screw rod passes through the threaded hole so that the two sliding installation blocks reciprocate up and down along the guide rod where the two sliding installation blocks are positioned when the screw rod rotates;
a first gear is fixed at the position of the lead screw, which is close to the bearing, a motor capable of rotating positively and negatively is also fixed on the base, a motor shaft penetrates through the base, a second gear meshed with the first gear is arranged at the end part of the motor shaft, and the number of teeth of the first gear is larger than that of the second gear;
the calibrating device comprises a measuring plate fixed on the lifting device, a dial indicator arranged right above the measuring plate and a connecting part for connecting the dial indicator to the inner wall of the box body;
the measuring plate is L-shaped, the vertical edge of the measuring plate is fixed on the edge of the lifting device, and the horizontal edge of the measuring plate is suspended; the dial indicator is arranged right above the horizontal edge, and the probe rod of the dial indicator is opposite to the horizontal edge;
the inner wall of the box body is provided with a T-shaped chute, and the connecting part comprises a second sliding block and a first sliding block positioned above the second sliding block; the second sliding block is shaped, the vertical section of the second sliding block is connected to the T-shaped chute through a T-shaped first bolt, one end of a first spring is fixed on the end face of a nut positioned in the T-shaped chute through the first bolt, the other end of the first spring is embedded with a spherical shell, a ball which can freely roll but cannot roll out of the spherical shell is arranged in the spherical shell, and the part of the ball exposed out of the spherical shell is tangent to the bottom of the T-shaped chute; an opening is formed in the upper portion of the horizontal section of the second sliding block, sliding rods which are arranged in parallel and supporting rods which are fixed on the inner wall are arranged in the opening, one end of each sliding rod, far away from the T-shaped sliding groove, penetrates through the inner wall of the opening of the second sliding block to extend out, and one end, close to the T-shaped sliding groove, of each sliding rod is arranged on the bearing; the end, close to the second slide block, of the first slide block is provided with a protruding part, and the protruding part is used for the supporting rod to pass through and can move in the opening under the action of the sliding rod; the end, far away from the T-shaped sliding groove, of the first sliding block is also provided with a limiting plate and an elastic piece fixed on the limiting plate, the limiting plate is L-shaped, the end part of the horizontal part of the limiting plate is fixed with the first sliding block, and the elastic piece is obliquely fixed at the bottom end of the outer side of the vertical part of the limiting plate;
the back of the dial indicator is fixed with a fixed plate which is in an inverted L shape, and the elastic sheet and the limiting plate extend into the inner space of the fixed plate and are tightly attached under the action of the elastic sheet;
the box body is of a hexahedral structure, a first hole is formed in one side surface of the box body, second holes are formed in the other two side surfaces of the box body respectively, the cross section of the cover body is in an n shape, the cover body can be attached to the side surface of the box body, two side edges of one side of the opening of the cover body extend towards the middle to form a spigot, two opposite inner walls of the cover body are respectively provided with a limiting head, and each limiting head is located in a sliding groove on the outer wall of the box body and can seal the first hole and the second hole when the cover body is hung on the outer wall of the box body;
the locking device is arranged at the upper part of the box body and comprises a pressing plate, an operating rod, a first guide rod, a second guide rod, a wedge block, a first compression spring and a second compression spring;
the upper part of the box body is provided with a control groove, the control groove is close to the edge of one side of the box body, the pressing plate is connected with the operating rod to form a T-shaped structure, the bottom end of the first guide rod is fixed in a blind hole on the inner bottom of the control groove, the top end of the first guide rod penetrates through the pressing plate positioned in the control groove, a first compression spring is sleeved on the part of the first guide rod positioned between the pressing plate and the bottom of the blind hole, one end of the first compression spring is propped against the bottom of the blind hole, the other end of the first compression spring is contacted with the pressing plate, and the end of the first guide rod extending out of the pressing plate is fixedly provided with a first limit ring; the bottom end of the second guide rod is fixed at the inner bottom of the control groove, the top end of the second guide rod penetrates through the pressing plate, and a second limit ring is fixed at the end part of the second guide rod extending out of the pressing plate; the upper part of the box body is also provided with a guide hole communicated with the control groove, the guide hole penetrates through the side surface of the box body on which the guide hole is positioned, the wedge blocks are positioned in the guide hole, the two sides of the wedge blocks are in sliding connection with the inner wall of the guide hole, the upper part of the wedge blocks is fixedly provided with an L-shaped guide head, one section of the guide head is vertically fixed on the wedge blocks, the other section of the guide head penetrates through a second compression spring and then stretches into a sliding hole on the side wall of the box body, the two ends of the second compression spring are respectively in extrusion contact with the side wall of the box body and the other section of the guide head, and one side of the wedge blocks with inclined surfaces can be in contact with one end of the pressing plate; the pressing plate is separated from the inner bottom of the control groove by a certain distance, so that when the pressing plate is not pressed down, the other side of the wedge block can extend out of the guide hole and press the upper end of the cover body attached to the outer side of the box body.
Further, a first gear is fixed at the position, close to the bearing, of the screw rod, a motor capable of rotating positively and negatively is also fixed on the base, a motor shaft penetrates through the base, a second gear meshed with the first gear is arranged at the end part of the motor shaft, and the number of teeth of the first gear is larger than that of the second gear.
Further, the outside of box is equipped with inductive switch, and inductive switch is located the percentage table below and is close to the percentage table probe rod, inductive switch is connected with rodless cylinder switch, and rodless cylinder keeps stationary state when inductive switch senses the measurement board.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention adopts a two-stage lifting mode, which can not only quickly reach a set distance through a rodless cylinder, but also can be slowly adjusted through a screw rod; meanwhile, the whole lifting precision is ensured by using an external percentage meter, long-distance high-precision processing is not needed, and the cost is low;
2. the invention has simple operation and flexible adjustment, and the obtained result is more accurate. The dial indicator is mainly connected to the nuclear magnetic resonance test teaching system through a connecting component, the dial indicator probe rod is arranged right above the horizontal edge of the measuring plate, and in the up-and-down movement process of the lifting device, whether the position of the lifting device is the required accurate position is judged through the deviation condition of the dial indicator probe and the measuring plate when the dial indicator probe is contacted. Through setting up second slider and first bolt, make the percentage table can be according to the vertical movement in nuclear magnetic resonance test teaching system, through setting up first spring and the ball of inlaying in the spherical shell, when the percentage table needs vertical movement, loosen the nut of first bolt, press first bolt, first spring compression, the second slider can be vertical movement, drive the ball and roll in the spout bottom, reach required position, loosen first bolt, the elasticity of first spring makes the second slider stable in required position department screw up the nut again, can prevent that the second slider from violently rocking when the nut is not screwed up, thereby can accurately steadily remove required position when making the percentage table vertical movement, realize the nimble selection of percentage table installation fixed position; the sliding rod, the supporting rod and the first sliding block are arranged, the supporting rod penetrates through the protruding part of the first sliding block to support the gravity of the first sliding block, so that the first sliding block is matched with the sliding rod, the first sliding block stably moves horizontally along the supporting rod, and the dial indicator can stably and accurately move horizontally to a required position; through setting up fixed plate, limiting plate and shell fragment, make first slider and percentage table realize stable detachable connection. Therefore, the invention has simple structure, is easy to manufacture, can greatly reduce the purchase cost of teaching equipment, and is very economical and applicable relative to daily teaching;
3. the locking device is arranged to prevent the cover body from being separated from the box body in the conveying process of the unilateral nuclear magnetic resonance measuring instrument teaching system, and even if the measuring instrument accidentally tilts, the cover body cannot be separated from the box body; the locking device has the advantages that the box body can be clamped by the cover body, the sealing effect is better, the cover body can be taken down only by pressing the operating rod, and the locking device is simple and easy to use.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is an overall side view of the present invention;
FIG. 2 is a front view of the whole of the present invention;
FIG. 3 is a sectional view I-I of FIG. 2;
FIG. 4 is a schematic view of a lifting device;
FIG. 5 is a schematic diagram of a calibration device;
FIG. 6 is a top view of the assembled case and cover;
FIG. 7 is a schematic view of a locking device;
fig. 8 is another schematic view of the locking device.
Reference numerals: the device comprises a box body 1, a sliding chute 11, a first hole 12, a supporting foot 13, a cover body 14, a limit head 141, a lifting device 2, a supporting frame 21, a measuring plate 211, a rodless cylinder 22, a moving sliding block 221, a second lifting mechanism 23, a base 231, a lead screw 232, a sliding mounting block 233, a connecting plate 234, a guide rod 235, a first gear 236, a second gear 237, a motor 238, a dial indicator 3, a calibration device 4, a first sliding block 41, a supporting rod 411, a limit plate 412, a spring piece 413, a second sliding block 42, a first bolt 421, a first spring 422, a spherical shell 423, a sliding rod 43, a locking device 5, a pressing plate 51, an operating rod 52, a first guide rod 53, a second guide rod 54, a wedge 55, a guide head 551, a first compression spring 56 and a second compression spring 57.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the present invention more clear and easy to understand, the present invention is further described below with reference to the accompanying drawings and the detailed description:
referring to fig. 1 to 8, a teaching system for a single-sided nmr measuring instrument includes a case 1, a lifting device 2, a calibration device 4, a cover 14, and a locking device 5 for preventing the cover 14 from being separated from the case 1;
the lifting device 2 is arranged in the mounting cavity of the box body 1, and the lifting device 2 comprises a dial indicator 3 fixed on the wall of the box body 1, a supporting frame 21, a first lifting mechanism and a second lifting mechanism 23;
the support frame 21 is an inverted L-shaped plate with a cross section, a threaded hole is formed in the vertical section, two reinforcing plates are arranged on the inner sides of the horizontal section and the vertical section, a measuring plate 211 extending to the lower part of the dial indicator 3 is also fixed on the reinforcing plates, and the measuring plate 211 can be contacted with a probe rod of the dial indicator 3 in the lifting process along with the support frame 21; the horizontal section of the support 21 is used for placing a magnet, and the measuring plate 211 may be a horizontal plate with one end fixed on the vertical section of the support 21.
The first lifting mechanism and the second lifting mechanism 23 are both positioned in the mounting cavity, the first lifting mechanism is a rodless cylinder 22, the rodless cylinder 22 is fixed on the box 11 along the vertical direction through bolts, and the second lifting mechanism 23 is fixedly connected with a movable sliding block 221 of the rodless cylinder 22;
the second lifting mechanism 23 comprises a base 231, a screw 232 and two sliding mounting blocks 233; the base 231 is fixed on a movable slide block 221 of the rodless cylinder 22, one end of a screw rod 232 is vertically installed on the base 231 through a bearing, two sliding installation blocks 233 are respectively provided with installation holes for fixing the support frame 21, the two sliding installation blocks 233 are respectively connected with the installation seat in a sliding mode through a guide rod 235 vertically fixed on the installation seat, the two sliding installation blocks 233 are fixedly connected through a connecting plate 234, a threaded hole matched with the screw rod 232 is formed in the connecting plate 234, and the screw rod 232 passes through the threaded hole so that the two sliding installation blocks 233 reciprocate up and down along the guide rods 235 where the two sliding installation blocks 233 are located when the screw rod 232 rotates. The slide mounting block 233 provides the mounting location of the support bracket 21; the guide rod 235 can reduce the radial stress of the screw 232, thereby reducing the friction of the screw 232.
The calibrating device 4 comprises a measuring plate 211 fixed on the lifting device 2, a dial indicator 3 arranged right above the measuring plate 211 and a connecting component for connecting the dial indicator 3 to the inner wall of the box body 1 of the nuclear magnetic resonance test teaching system.
The measuring plate 211 is L-shaped, the vertical side is fixed on the edge of the lifting device 2, and the horizontal side is suspended; the dial indicator 3 is arranged right above the horizontal edge, and the probe rod of the dial indicator 3 is opposite to the horizontal edge.
The inner wall of the box body 1 is provided with a T-shaped chute, and the connecting part comprises a second sliding block 42 and a first sliding block 41 positioned above the second sliding block 42; the second sliding block 42 is l-shaped, the vertical section of the second sliding block 42 is connected to the T-shaped chute through a T-shaped first bolt 42131, one end of a first spring 422 is fixed on the end face of a nut positioned in the T-shaped chute by the first bolt 421, the other end of the first spring 422 is embedded with a spherical shell, a ball which can freely roll but cannot roll out of the spherical shell 423 is arranged in the spherical shell 423, and the part of the ball exposed out of the spherical shell 423 is tangential to the bottom of the T-shaped chute; an opening is formed in the upper portion of the horizontal section of the second sliding block 42, a sliding rod 43 which is arranged in parallel and a supporting rod 411 which is fixed on the inner wall are arranged in the opening, one end of the sliding rod 43 far away from the T-shaped sliding groove penetrates through the inner wall of the opening of the second sliding block 42 to extend out, and one end close to the T-shaped sliding groove is arranged on a bearing; the end of the first sliding block 41, which is close to the second sliding block 42, is provided with a protruding part, the protruding part is used for the supporting rod 411 to pass through and can move in the opening under the action of the sliding rod 43, the sliding rod 43 and the protruding part can be matched in a plurality of setting modes, and one of the protruding parts is provided with threads matched with the sliding rod 43 at the position, which is close to the sliding rod 43; the end of the first sliding block 41 far away from the T sliding groove is further provided with a limiting plate 412 and a spring piece 413 fixed on the limiting plate 412, the limiting plate 412 is L-shaped, the end part of the horizontal part is fixed with the first sliding block 41, and the spring piece 413 is obliquely fixed at the bottom end of the outer side of the vertical part of the limiting plate 412.
The dial indicator 3 is fixed with the fixed plate at the back, the fixed plate is the L type of inversion, shell fragment 413 and limiting plate 412 stretch into the inboard space of fixed plate to make fixed plate and limiting plate 412 hug closely under the shell fragment 413 effect. During installation, the elastic sheet 413 is pressed from the inclined plane in the initial state to be close to the limiting plate 412 through the back of the dial indicator 3, the vertical edge of the fixed plate is inserted into the space between the limiting plate 412 and the first sliding block 41, the dial indicator 3 is slowly released, at least one part of the elastic sheet 413 is tightly attached to the back of the dial indicator 3 under the action of the elastic sheet 413, and the fixed plate is tightly attached to the limiting plate 412.
Unilateral nuclear magnetic resonance measuring apparatu casing includes: a case 1, a cover 14, and a locking device 5 for preventing the cover 14 from being separated from the case 1; the cover 14 is used for preventing dust and water vapor from entering the box 1;
the box body 1 is of a hexahedral structure, a first hole 12 is formed in one side surface of the box body 1, second holes are formed in the other two side surfaces of the box body 1 respectively, the cross section of the cover body 14 is n-shaped, the cover body 14 can be attached to the side surface of the box body 1, two side edges of one side of the opening of the cover body 14 extend towards the middle to form a spigot, the spigot can enable the cover body 14 to be attached to the box body 1 better, a limiting head 141 is respectively arranged on two opposite inner walls of the cover body 14, each limiting head 141 is located in a sliding groove 11 on the outer wall of the box body 1, and when the cover body 14 is hung on the outer wall of the box body 1, the first hole 12 and the second holes can be sealed, so that the limiting head 141 cannot fall down from the box body 1 when entering the sliding groove 11;
the locking device 5 is installed at the upper part of the box body 1, the locking device 5 is installed at the upper part of the box body 1 and can be operated by a user conveniently, and the locking device 5 comprises a pressing plate 51, an operating rod 52, a first guide rod 53, a first guide rod 54, a wedge block 55, a first compression spring 56 and a second compression spring 57;
the upper part of the box body 1 is provided with a control groove, the control groove is close to the edge of one side of the box body 1, the pressing plate 51 is connected with the operating rod 52 to form a T-shaped structure, the bottom end of the first guide rod 53 is fixed in a blind hole on the inner bottom of the control groove, the top end of the first guide rod 53 passes through the pressing plate 51 positioned in the control groove, a first compression spring 56 is sleeved on the part of the first guide rod 53 positioned between the pressing plate 51 and the blind hole bottom, one end of the first compression spring 56 is propped against the blind hole bottom, the other end of the first compression spring is contacted with the pressing plate 51, and a first limit ring is fixed at the end part of the first guide rod 53 extending out of the pressing plate 51; the bottom end of the first guide rod 54 is fixed on the inner bottom of the control groove, the top end of the first guide rod 54 passes through the pressing plate 51, a second limit ring is fixed at the end part of the first guide rod 54 extending out of the pressing plate 51, the two guide rods 235 are designed to have the functions that the pressing plate 51 cannot rotate, the operating rod 52 is designed in the middle of the pressing plate 51, and the stress of the pressing plate 51 can be balanced when the pressing plate 51 is pressed down; the upper part of the box body 1 is also provided with a guide hole communicated with the control groove, the guide hole penetrates through the side surface of the box body 1 on which the guide hole is positioned, the two sides of the wedge block 55 are in sliding connection with the inner wall of the guide hole, specifically, two raised strips are respectively fixed on the two sides of the wedge block 55 positioned in the guide hole, two strip-shaped sinking grooves are formed in the inner wall of the guide hole, each raised strip can slide in the strip-shaped sinking groove, an L-shaped guide head 551 is fixed on the upper part of the wedge block 55, one section of the guide head 551 is vertically fixed on the wedge block 55, the other section penetrates through a second compression spring 57 and then stretches into a sliding hole on the side wall of the box body 1, and two ends of the second compression spring 57 are respectively in extrusion contact with the side wall of the box body 1 and the other section of the guide head 551, so that one side of the wedge block 55 with an inclined plane can be in contact with one end of the pressing plate 51; the pressing plate 51 is separated from the inner bottom of the control groove by a certain distance, so that when the pressing plate 51 is not pressed down, the other side of the wedge block 55 can extend out of the guide hole and be pressed on the upper end of the cover body 14 attached to the outer side of the box body 1; when the user presses down the operating lever 52 against the first compression spring 56, the pressure plate 51 moves toward the counter bore, and the wedge 55 moves toward the first guide lever 53 under the action of the second compression spring 57, at which time the cover 14 can be removed.
Further, an inductive switch is arranged outside the box 11, the inductive switch is located under the dial indicator 3 and is close to the probe rod of the dial indicator 3, the inductive switch is in switch connection with the rodless cylinder 22, and the rodless cylinder 22 is kept in a static state when the inductive switch senses the measuring plate 211. During measurement, the dial indicator 3 probe rod is in contact with the measurement plate 211, and if the first lifting mechanism is lowered at the moment and the second lifting mechanism 23 is forgotten to be lowered, the first lifting mechanism is lifted to enable the measurement plate 211 to collide with the dial indicator 3 probe rod and be easy to damage when being used again, and the first lifting mechanism cannot be lowered when the second lifting mechanism 23 is not lowered by the inductive switch, so that the situation is prevented.
The application principle of the invention is as follows: in the invention, a dial indicator 3 is connected to the inner wall of a box body 1 through a connecting component, a probe rod of the dial indicator 3 is arranged right above the horizontal edge of a measuring plate 211, and in the process of moving up and down the lifting device 2, whether the position of the lifting device 2 is the required accurate position is judged according to the deviation condition when the probe of the dial indicator 3 contacts with the measuring plate 211. Through setting up second slider 42 and first bolt 421, make the dial indicator 3 can be according to the vertical movement in nuclear magnetic resonance test teaching system, through setting up first spring 422 and ball that inlays in spherical shell 423, when the dial indicator 3 needs vertical movement, loosen the nut of first bolt 421, press first bolt 421, first spring 422 compresses, second slider 42 can be vertical movement, drive the ball and roll in the spout bottom, reach the required position, loosen first bolt 421, the elasticity of first spring 422 makes second slider 42 stable in required position place screw up the nut, can prevent second slider 42 from rocking when the nut is not screwed up, thereby make the vertical movement of dial indicator 3 can accurate stable the removal to required position; by arranging the sliding rod 43, the supporting rod 411 and the first sliding block 41, the supporting rod 411 penetrates through the protruding part of the first sliding block 41 to support the gravity of the first sliding block 41, so that the first sliding block 41 is matched with the sliding rod 43, the first sliding block 41 stably moves horizontally along the supporting rod 411, and the dial indicator 3 can stably and accurately move horizontally to a required position; the first sliding block 41 and the dial indicator 3 are stably and detachably connected by arranging the fixing plate, the limiting plate 412 and the elastic sheet 413; the use method of the lifting device 2 in the invention is as follows: firstly, setting a dial indicator 3 at a preset position, after the support frame 21 is lifted along with the first lifting mechanism at the first section, enabling the position of the measuring plate 211 to be close to the probe rod of the dial indicator 3, and then slowly adjusting the position of the support frame 21 through lifting at the second section to enable the measuring plate 211 to be in contact with the probe rod of the dial indicator 3; judging whether the corresponding position is reached or not according to the reading of the dial indicator 3, and not only needing to have the adjusting function without the lifting device, but also overcoming the problem that the overall precision of the two-stage lifting mode is difficult to control; when the cover body 14 is used, the operating rod 52 is firstly pressed down, the wedge blocks 55 are moved into the guide holes, the limiting heads 141 are aligned with the sliding grooves 11, the cover body 14 is sleeved into the box body 1 from the upper part of the box body 1, and when the cover body 14 moves to the end point, the operating rod 52 is released, so that the cover body 14 can be locked with the box body 11; when the cover 14 needs to be removed, the operating rod 52 can be pressed down again, the wedge blocks 55 enter the guide holes, and the cover 14 can be removed.
Finally, it is 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 modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered by the scope of the claims of the present invention.
Claims (3)
1. The teaching system of the unilateral nuclear magnetic resonance measuring instrument is characterized by comprising a box body, a lifting device, a calibration device, a cover body and a locking device for preventing the cover body from being separated from the box body;
the lifting device is arranged in the box body installation cavity and comprises a dial indicator, a support frame, a first lifting mechanism and a second lifting mechanism which are fixed on the wall of the box body;
the support frame is an inverted L-shaped plate with a cross section, a threaded hole is formed in the vertical section, a measuring plate extending to the lower part of the dial indicator is further fixed on the support frame, and the measuring plate can be in contact with a probe rod of the dial indicator; the horizontal section of the support frame is used for placing a magnet;
the first lifting mechanism and the second lifting mechanism are both positioned in the mounting cavity, the first lifting mechanism is a rodless cylinder, the rodless cylinder is fixed on the box body along the vertical direction through a bolt, and the second lifting mechanism is fixedly connected with a movable sliding block of the rodless cylinder;
the second lifting mechanism comprises a base, a screw rod and two sliding mounting blocks; the base is fixed on a movable slide block of the rodless cylinder, one end of the screw rod is vertically arranged on the base through a bearing, two sliding installation blocks are respectively provided with an installation hole for fixing the support frame, the two sliding installation blocks are respectively in sliding connection with the installation seat through a guide rod vertically fixed on the installation seat, the two sliding installation blocks are fixedly connected through a connecting plate, a threaded hole matched with the screw rod is formed in the connecting plate, and the screw rod passes through the threaded hole so that the two sliding installation blocks reciprocate up and down along the guide rod where the two sliding installation blocks are positioned when the screw rod rotates;
a first gear is fixed at the position of the lead screw, which is close to the bearing, a motor capable of rotating positively and negatively is also fixed on the base, a motor shaft penetrates through the base, a second gear meshed with the first gear is arranged at the end part of the motor shaft, and the number of teeth of the first gear is larger than that of the second gear;
the calibrating device comprises a measuring plate fixed on the lifting device, a dial indicator arranged right above the measuring plate and a connecting part for connecting the dial indicator to the inner wall of the box body;
the measuring plate is L-shaped, the vertical edge of the measuring plate is fixed on the edge of the lifting device, and the horizontal edge of the measuring plate is suspended; the dial indicator is arranged right above the horizontal edge, and the probe rod of the dial indicator is opposite to the horizontal edge;
the inner wall of the box body is provided with a T-shaped chute, and the connecting part comprises a second sliding block and a first sliding block positioned above the second sliding block; the second sliding block is in a L shape, the vertical section of the second sliding block is connected to a T-shaped chute through a T-shaped first bolt, one end of a first spring is fixed on the end face of a nut positioned in the T-shaped chute through the first bolt, the other end of the first spring is embedded with a spherical shell, a ball which can freely roll but cannot roll out of the spherical shell is arranged in the spherical shell, and the part of the ball exposed out of the spherical shell is tangent to the bottom of the T-shaped chute; an opening is formed in the upper portion of the horizontal section of the second sliding block, sliding rods which are arranged in parallel and supporting rods which are fixed on the inner wall are arranged in the opening, one end of each sliding rod, far away from the T-shaped sliding groove, penetrates through the inner wall of the opening of the second sliding block to extend out, and one end, close to the T-shaped sliding groove, of each sliding rod is arranged on the bearing; the end, close to the second slide block, of the first slide block is provided with a protruding part, and the protruding part is used for the supporting rod to pass through and can move in the opening under the action of the sliding rod; the end, far away from the T-shaped sliding groove, of the first sliding block is also provided with a limiting plate and an elastic piece fixed on the limiting plate, the limiting plate is L-shaped, the end part of the horizontal part of the limiting plate is fixed with the first sliding block, and the elastic piece is obliquely fixed at the bottom end of the outer side of the vertical part of the limiting plate;
the back of the dial indicator is fixed with a fixed plate which is in an inverted L shape, and the elastic sheet and the limiting plate extend into the inner space of the fixed plate and are tightly attached under the action of the elastic sheet;
the box body is of a hexahedral structure, a first hole is formed in one side surface of the box body, second holes are formed in the other two side surfaces of the box body respectively, the cross section of the cover body is in an n shape, the cover body can be attached to the side surface of the box body, two side edges of one side of the opening of the cover body extend towards the middle to form a spigot, two opposite inner walls of the cover body are respectively provided with a limiting head, and each limiting head is located in a sliding groove on the outer wall of the box body and can seal the first hole and the second hole when the cover body is hung on the outer wall of the box body;
the locking device is arranged at the upper part of the box body and comprises a pressing plate, an operating rod, a first guide rod, a second guide rod, a wedge block, a first compression spring and a second compression spring;
the upper part of the box body is provided with a control groove, the control groove is close to the edge of one side of the box body, the pressing plate is connected with the operating rod to form a T-shaped structure, the bottom end of the first guide rod is fixed in a blind hole on the inner bottom of the control groove, the top end of the first guide rod penetrates through the pressing plate positioned in the control groove, a first compression spring is sleeved on the part of the first guide rod positioned between the pressing plate and the bottom of the blind hole, one end of the first compression spring is propped against the bottom of the blind hole, the other end of the first compression spring is contacted with the pressing plate, and the end of the first guide rod extending out of the pressing plate is fixedly provided with a first limit ring; the bottom end of the second guide rod is fixed at the inner bottom of the control groove, the top end of the second guide rod penetrates through the pressing plate, and a second limit ring is fixed at the end part of the second guide rod extending out of the pressing plate; the upper part of the box body is also provided with a guide hole communicated with the control groove, the guide hole penetrates through the side surface of the box body on which the guide hole is positioned, the wedge blocks are positioned in the guide hole, the two sides of the wedge blocks are in sliding connection with the inner wall of the guide hole, the upper part of the wedge blocks is fixedly provided with an L-shaped guide head, one section of the guide head is vertically fixed on the wedge blocks, the other section of the guide head penetrates through a second compression spring and then stretches into a sliding hole on the side wall of the box body, the two ends of the second compression spring are respectively in extrusion contact with the side wall of the box body and the other section of the guide head, and one side of the wedge blocks with inclined surfaces can be in contact with one end of the pressing plate; the pressing plate is separated from the inner bottom of the control groove by a certain distance, so that when the pressing plate is not pressed down, the other side of the wedge block can extend out of the guide hole and press the upper end of the cover body attached to the outer side of the box body.
2. The teaching system of the unilateral nuclear magnetic resonance measuring instrument according to claim 1, wherein a first gear is fixed at a position of the lead screw, which is close to the bearing, a motor capable of rotating positively and negatively is also fixed on the base, a motor shaft penetrates through the base, a second gear meshed with the first gear is arranged at the end part of the motor shaft, and the number of teeth of the first gear is larger than that of the second gear.
3. The teaching system of the unilateral nuclear magnetic resonance measuring instrument according to claim 2, wherein the induction switch is arranged outside the box body, the induction switch is located under the dial indicator and is close to the dial indicator probe rod, the induction switch is connected with the rodless cylinder switch, and the rodless cylinder is kept in a static state when the induction switch senses the measuring plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810155535.4A CN108344763B (en) | 2018-02-23 | 2018-02-23 | Unilateral nuclear magnetic resonance measuring instrument teaching system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810155535.4A CN108344763B (en) | 2018-02-23 | 2018-02-23 | Unilateral nuclear magnetic resonance measuring instrument teaching system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108344763A CN108344763A (en) | 2018-07-31 |
| CN108344763B true CN108344763B (en) | 2024-02-27 |
Family
ID=62958794
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810155535.4A Active CN108344763B (en) | 2018-02-23 | 2018-02-23 | Unilateral nuclear magnetic resonance measuring instrument teaching system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108344763B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112682636B (en) * | 2020-12-18 | 2022-06-21 | 重庆工程职业技术学院 | Asset management workstation |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015452A (en) * | 2006-11-29 | 2007-08-15 | 新奥博为技术有限公司 | 3-D motion electric sick bed system for permanent-magnet open type magnetic resonance apparatus |
| CN101032424A (en) * | 2006-12-28 | 2007-09-12 | 郑志刚 | Stretcher vehicle for image examining |
| CN101413389A (en) * | 2008-12-02 | 2009-04-22 | 中国海洋石油总公司 | Graduation apparatus of magnetic nuclear resonance logger |
| CN101539567A (en) * | 2009-04-14 | 2009-09-23 | 江南大学 | Full-automatic petroleum asphalt penetration measuring instrument |
| CN201655109U (en) * | 2010-01-18 | 2010-11-24 | 杭州大华仪器制造有限公司 | Nuclear magnetic resonance experimental facility with vertically placed and freely replaced sample |
| CN203931702U (en) * | 2014-06-01 | 2014-11-05 | 上海复旦天欣科教仪器有限公司 | A kind of I-shaped permanent magnet device for nulcear magnetic resonance (NMR) teaching and experiment equipment |
| CN205027626U (en) * | 2015-10-16 | 2016-02-10 | 辽宁省计量科学研究院 | Injection formula mortar strength detector calibrating device |
| CN206248994U (en) * | 2016-12-09 | 2017-06-13 | 重庆工程职业技术学院 | For the optical projection system of Digital Media teaching |
| CN206584649U (en) * | 2017-03-15 | 2017-10-24 | 泰山医学院 | Control in vitro without metal heart driving model |
| CN206629294U (en) * | 2017-04-11 | 2017-11-10 | 重庆工程职业技术学院 | A kind of instructional device for biological Heating Experiment |
| CN207764144U (en) * | 2018-02-23 | 2018-08-24 | 重庆工程职业技术学院 | A kind of unilateral Nuclear Magnetic Resonance Measurement instrument tutoring system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6889073B2 (en) * | 2000-05-08 | 2005-05-03 | David A. Lampman | Breast biopsy and therapy system for magnetic resonance imagers |
| US6832503B2 (en) * | 2002-12-18 | 2004-12-21 | Lear Corporation | Machine for testing occupant restraint system |
-
2018
- 2018-02-23 CN CN201810155535.4A patent/CN108344763B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101015452A (en) * | 2006-11-29 | 2007-08-15 | 新奥博为技术有限公司 | 3-D motion electric sick bed system for permanent-magnet open type magnetic resonance apparatus |
| CN101032424A (en) * | 2006-12-28 | 2007-09-12 | 郑志刚 | Stretcher vehicle for image examining |
| CN101413389A (en) * | 2008-12-02 | 2009-04-22 | 中国海洋石油总公司 | Graduation apparatus of magnetic nuclear resonance logger |
| CN101539567A (en) * | 2009-04-14 | 2009-09-23 | 江南大学 | Full-automatic petroleum asphalt penetration measuring instrument |
| CN201655109U (en) * | 2010-01-18 | 2010-11-24 | 杭州大华仪器制造有限公司 | Nuclear magnetic resonance experimental facility with vertically placed and freely replaced sample |
| CN203931702U (en) * | 2014-06-01 | 2014-11-05 | 上海复旦天欣科教仪器有限公司 | A kind of I-shaped permanent magnet device for nulcear magnetic resonance (NMR) teaching and experiment equipment |
| CN205027626U (en) * | 2015-10-16 | 2016-02-10 | 辽宁省计量科学研究院 | Injection formula mortar strength detector calibrating device |
| CN206248994U (en) * | 2016-12-09 | 2017-06-13 | 重庆工程职业技术学院 | For the optical projection system of Digital Media teaching |
| CN206584649U (en) * | 2017-03-15 | 2017-10-24 | 泰山医学院 | Control in vitro without metal heart driving model |
| CN206629294U (en) * | 2017-04-11 | 2017-11-10 | 重庆工程职业技术学院 | A kind of instructional device for biological Heating Experiment |
| CN207764144U (en) * | 2018-02-23 | 2018-08-24 | 重庆工程职业技术学院 | A kind of unilateral Nuclear Magnetic Resonance Measurement instrument tutoring system |
Non-Patent Citations (1)
| Title |
|---|
| 一种新型的贯入式砂浆强度检测仪校准装置;刘伟;房田;张贺;;中国仪器仪表(第03期);全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108344763A (en) | 2018-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN108344763B (en) | Unilateral nuclear magnetic resonance measuring instrument teaching system | |
| CN217638498U (en) | High-definition digital display Rockwell hardness tester | |
| CN102538635A (en) | Axial clearance detection device for electromagnetic relay and use method thereof | |
| CN212179731U (en) | Detection device convenient to locate for bearing detection | |
| CN211738463U (en) | Instrument and meter fixing device | |
| CN210625596U (en) | Aluminum alloy die-casting detection device | |
| CN215572589U (en) | Measuring tool for special-shaped sealing gasket | |
| CN216954472U (en) | Automobile die surface flatness detection equipment | |
| CN207764144U (en) | A kind of unilateral Nuclear Magnetic Resonance Measurement instrument tutoring system | |
| CN213543448U (en) | Detection equipment for cylinder block of refrigerator compressor | |
| CN114234764B (en) | Quality inspection detection device for flywheel housing inner cavity size | |
| CN212964429U (en) | Testing arrangement for proportion disk seat | |
| CN213579120U (en) | Gasket flatness detection device | |
| CN212586124U (en) | Automobile parts tension machine for pressure detection | |
| CN209214506U (en) | It is a kind of measure linear slide rail basal plane to four centers Zhu Gou away from cubing | |
| CN111453574A (en) | Elevator door lock meshing length measuring device and method | |
| CN220912904U (en) | Lining plate abrasion detection device of damage machine | |
| CN217738152U (en) | Inner gear ring and bearing hole coaxiality detection device | |
| CN209605707U (en) | One kind being used for automobile side coaming part detection device | |
| CN209433661U (en) | A kind of calibrating installation for nuclear magnetic resonance test tutoring system | |
| CN212409656U (en) | Automatic detector for assembly size of axle box body | |
| CN210571800U (en) | Soil hardness tester | |
| CN215338049U (en) | Coplanarity testing fixture for engine belt wheel system | |
| CN219368593U (en) | Thickness measuring mechanism for gasket | |
| CN212459134U (en) | Gap eliminating device for transmission screw rod, testing machine and self-checking type testing machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |