CN113628513A - Comprehensive experiment equipment for teaching material mechanics experiment - Google Patents
Comprehensive experiment equipment for teaching material mechanics experiment Download PDFInfo
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- CN113628513A CN113628513A CN202111087637.5A CN202111087637A CN113628513A CN 113628513 A CN113628513 A CN 113628513A CN 202111087637 A CN202111087637 A CN 202111087637A CN 113628513 A CN113628513 A CN 113628513A
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- G09B23/06—Models for scientific, medical, or mathematical purposes, e.g. full-sized devices for demonstration purposes for physics
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Abstract
The invention discloses a comprehensive experiment device for material mechanics experiment teaching, which comprises a bottom plate, wherein two vertical plates are symmetrically welded on the top wall of the bottom plate, the top wall of the two vertical plates is welded with a top plate together, the bottom wall of the bottom plate is provided with four universal wheels which are mutually symmetrical, sliding grooves are formed in one sides of the two vertical plates which are mutually symmetrical, cavities are symmetrically formed in the bottom plate, the two cavities respectively correspond to the two sliding grooves, a first electric telescopic rod is welded on the top wall of the bottom plate, a fixed plate is welded at the free end of the first electric telescopic rod, a glass body and a limiting plate are respectively fixed on the top wall of the fixed plate, and a first spring is welded on the top wall of the fixed plate. Has the advantages that: through setting up structures such as glass body, force transducer, can be so that the student can be audio-visual the experience member deformation receive power and rather than the numerical value of corresponding deformation volume, the student of being convenient for can better understanding and study.
Description
Technical Field
The invention relates to the technical field of experimental equipment for mechanics of materials, in particular to comprehensive experimental equipment for teaching experimental experiments of mechanics of materials.
Background
Course teaching and course experiment in colleges and universities 'material mechanics' are asynchronous, though present 'material mechanics' experimental apparatus is complete in function, and the precision is high, but bulky, the price is expensive, only is applicable to and operates in the laboratory, and the quantity of general colleges and universities purchase is limited, and based on the restriction of quantity, students often need to enter the laboratory after accomplishing course knowledge study and can operate or observe several days or even weeks later.
The study on the course of rod deformation generally cannot intuitively lead students to feel specific values of the rod deformation, and is not beneficial to the perception and study of the students on the course of Material mechanics.
Disclosure of Invention
The invention aims to solve the problem that students cannot intuitively feel the deformation quantity of a rod piece in the prior art, and provides a comprehensive experimental device for material mechanics experimental teaching.
In order to achieve the purpose, the invention adopts the following technical scheme:
a comprehensive experiment device for teaching material mechanics experiments comprises a bottom plate, wherein two vertical plates are symmetrically welded on the top wall of the bottom plate, a top plate is welded on the top wall of the two vertical plates, four universal wheels which are symmetrical to each other are arranged on the bottom wall of the bottom plate, sliding grooves are formed in the symmetrical sides of the two vertical plates, cavities are symmetrically formed in the bottom plate and correspond to the two sliding grooves respectively, a first electric telescopic rod is welded on the top wall of the bottom plate, a fixing plate is welded at the free end of the first electric telescopic rod, a glass body and a limiting plate are fixed on the top wall of the fixing plate respectively, a first spring is welded on the top wall of the fixing plate, a moving block is welded at the other end of the first spring, the glass body and the limiting plate are connected with the moving block in a sliding mode together, and a loading device is connected onto the top plate, and a clamping and fixing device is connected in the sliding groove.
In foretell an integrated experiment equipment for mechanics of materials experiment teaching, loading device includes force sensor, the diapire fixed connection of force sensor and roof, force sensor's diapire is fixed with the second spring, the other end welding of second spring has the connecting plate, the diapire welding of connecting plate has places the post, the diapire welding of placing the post has the backup pad, the weight body has been placed to the roof of backup pad.
In foretell a comprehensive experiment equipment for material mechanics experiment teaching, centre gripping fixing device includes two threaded rods, two the threaded rod respectively with two the sliding tray is kept away from open-ended one side and is rotated and be connected, two the equal threaded connection of threaded rod has the grip block, two the matching groove has all been seted up to the corresponding one side of grip block, three recess has been seted up to the cell wall circumference array in matching groove, and is three the recess is kept away from open-ended one end and has all been welded second electric telescopic handle, the welding of second electric telescopic handle's free end has the grip block, and is three the grip block is held the pole of being surveyed jointly, the threaded rod is connected with synchronous slewing mechanism.
In foretell an integrated experiment equipment for mechanics of materials experiment teaching, synchronous slewing mechanism includes first bevel gear, first bevel gear and threaded rod welded fastening, first bevel gear meshing has the second bevel gear, the center of rotation department welding of second bevel gear has the axis of rotation, the axis of rotation runs through the lateral wall of sliding tray and stretches out to the cavity is inside, the axis of rotation welding has third bevel gear, third bevel gear is located inside the cavity, two the cavity rotates jointly and is connected with the driving shaft, the driving shaft runs through the lateral wall of one of them cavity and outwards stretches out the welding and has the rolling disc, the lateral wall welding of rolling disc has the handle, the driving shaft symmetric welding has two fourth bevel gears, two fourth bevel gear is connected with two third bevel gear meshing respectively.
In the above comprehensive experimental device for teaching the material mechanics experiment, the rotating shaft is rotatably connected with the side wall of the cavity, the second bevel gear and the third bevel gear have the same size, and the first bevel gear and the fourth bevel gear have the same size.
In the comprehensive experiment equipment for teaching the material mechanics experiment, the threaded grooves are formed in the two clamping blocks, and the threaded rods are connected with the clamping blocks through the threaded grooves in a threaded mode.
In the comprehensive experiment equipment for teaching the material mechanics experiment, the three clamping plates are all arranged to be of arc structures, the glass body is made of transparent glass materials, scale marks are carved on the side wall of the glass body, and the supporting plate and the moving block are located on the symmetrical lines of the two vertical plates.
In the above comprehensive experimental device for teaching the material mechanics experiment, the supporting plate and the moving block respectively abut against the top wall and the bottom wall of the measured rod, and the bottom end of the initial position of the moving block is opposite to the zero scale mark on the glass body.
Compared with the prior art, the invention has the advantages that:
1: through setting up first bevel gear, second bevel gear and handle isotructure, make through rotating the handle, make the rolling disc rotate, meshing through first bevel gear and second bevel gear, make the driving shaft drive the axis of rotation and rotate, meshing through third bevel gear and fourth bevel gear, make the driving shaft drive the threaded rod and rotate, thereby drive the grip block and remove, make two grip blocks be close to each other and carry out the centre gripping by the measuring staff, make the center of being measured the pole just right with the backup pad, be convenient for carry out bending deformation work to being measured the pole.
2: through setting up second electric telescopic handle and grip block isotructure, through starting second electric telescopic handle for second electric telescopic handle drives the grip block and draws close each other and carries out the centre gripping to the measured pole fixed, makes the adaptable not unidimensional measured pole in matching groove, thereby has enlarged the application range of device.
3: through setting up connecting plate, backup pad and weight body isotructure, through placing the weight body in the backup pad to make backup pad atress pulling second spring, the numerical value that shows on the force sensor this moment is the backup pad to the application of force size of being surveyed the pole, makes the staff can be comparatively audio-visual observation the size of application of force.
4: through setting up first electric telescopic handle and movable block isotructure, when being surveyed the pole and receiving the pressure in the backup pad, the crooked institute of being surveyed the pole this moment will audio-visual extrudees the movable block to make the movable block move down, the staff accessible is observed the movable block bottom and just can audio-visual crooked deformation variable of experience pole to the numerical value of scale mark.
Drawings
FIG. 1 is a schematic structural diagram of a comprehensive experimental apparatus for teaching a material mechanics experiment according to the present invention;
FIG. 2 is an enlarged schematic view of part A of a comprehensive experimental apparatus for teaching a material mechanics experiment according to the present invention;
FIG. 3 is an enlarged schematic view of part B of a comprehensive experimental apparatus for teaching a material mechanics experiment according to the present invention;
fig. 4 is a side sectional view of a clamping block in a comprehensive experimental device for teaching a material mechanics experiment.
In the figure: 1 bottom plate, 2 risers, 3 roof, 4 universal wheels, 5 sliding tray, 6 cavitys, 7 first electric telescopic handle, 8 fixed plates, 9 glass bodies, 10 limiting plates, 11 movable blocks, 12 first springs, 13 force sensor, 14 second springs, 15 connecting plates, 16 place the post, 17 backup pads, 18 weight body, 19 threaded rods, 20 grip blocks, 21 matching groove, 22 recess, 23 second electric telescopic handle, 24 grip blocks, 25 measured rod, 26 first bevel gear, 27 second bevel gear, 28 axis of rotation, 29 third bevel gear, 30 fourth bevel gear, 31 driving shaft, 32 rolling disc, 33 handles.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-4, a comprehensive experimental device for teaching material mechanics experiments, comprising a bottom plate 1, wherein two risers 2 are symmetrically welded on the top wall of the bottom plate 1, a top plate 3 is welded on the top wall of the two risers 2, four mutually symmetrical universal wheels 4 are arranged on the bottom wall of the bottom plate 1, the device is conveniently moved to a proper position by arranging the universal wheels 4, sliding grooves 5 are respectively arranged on mutually symmetrical sides of the two risers 2, cavities 6 are symmetrically arranged in the bottom plate 1, the two cavities 6 respectively correspond to the two sliding grooves 5, a first electric telescopic rod 7 is welded on the top wall of the bottom plate 1, a fixed plate 8 is welded on the free end of the first electric telescopic rod 7, a glass body 9 and a limiting plate 10 are respectively fixed on the top wall of the fixed plate 8, a first spring 12 is welded on the top wall of the fixed plate 8, and a moving block 11 is welded on the other end of the first spring 12, the glass body 9 and the limiting plate 10 are connected with the moving block 11 in a sliding mode, the top plate 3 is connected with a loading device, and the sliding groove 5 is connected with a clamping and fixing device.
Loading device includes force sensor 13, force sensor 13 and the diapire fixed connection of roof 3, force sensor 13's diapire is fixed with second spring 14, the other end welding of second spring 14 has connecting plate 15, the diapire welding of connecting plate 15 places post 16, the diapire welding of placing post 16 has backup pad 17, weight body 18 has been placed to backup pad 17's roof, place weight body 18 in backup pad 17, thereby make backup pad 17 atress pulling second spring 14, the numerical value that shows on force sensor 13 this moment is backup pad 17 to being surveyed the application of force size of pole 25, make the staff can be comparatively audio-visual the size of observing the application of force.
Centre gripping fixing device includes two threaded rods 19, two threaded rods 19 keep away from open-ended one side rotation with two sliding tray 5 respectively and are connected, the equal threaded connection of two threaded rods 19 has grip block 20, matching groove 21 has all been seted up to two corresponding one sides of grip block 20, three recess 22 has been seted up to matching groove 21's cell wall circumference array, three recess 22 is kept away from open-ended one end and has all been welded second electric telescopic handle 23, the free end welding of second electric telescopic handle 23 has grip block 24, three grip block 24 is common to be held by measuring pole 25, start second electric telescopic handle 23, make second electric telescopic handle 23 drive grip block 24 draw close each other and carry out the centre gripping fixedly to measured pole 25, make and match the adaptable not measuring pole 25 of equidimension in groove 21, thereby the application range of device has been enlarged, threaded rod 19 is connected with synchronous slewing mechanism.
The synchronous rotating mechanism comprises a first bevel gear 26, the first bevel gear 26 is welded and fixed with a threaded rod 19, the first bevel gear 26 is meshed with a second bevel gear 27, a rotating shaft 28 is welded at the rotating center of the second bevel gear 27, the rotating shaft 28 penetrates through the side wall of the sliding groove 5 and extends into the cavity 6, a third bevel gear 29 is welded on the rotating shaft 28, the third bevel gear 29 is positioned inside the cavity 6, two cavities 6 are jointly and rotatably connected with a driving shaft 31, the driving shaft 31 penetrates through the side wall of one of the cavities 6 and extends outwards to be welded with a rotating disc 32, a handle 33 is welded on the side wall of the rotating disc 32, two fourth bevel gears 30 are symmetrically welded on the driving shaft 31, the two fourth bevel gears 30 are respectively meshed with the two third bevel gears 29, the rotating disc 32 rotates by rotating the handle 33, and the driving shaft 31 drives the rotating shaft 28 to rotate by the meshing of the first bevel gear 26 and the second bevel gear 27, through the meshing of third bevel gear 29 and fourth bevel gear 30 for driving shaft 31 drives threaded rod 19 and rotates, thereby drives grip block 20 and removes, makes two grip blocks 20 be close to each other and will be surveyed the centre gripping of pole 25, makes the center of being surveyed pole 25 just right with backup pad 17, is convenient for carry out bending deformation work to being surveyed pole 25.
The rotating shaft 28 is rotatably connected with the side wall of the cavity 6, the second bevel gear 27 and the third bevel gear 29 are the same in size, the first bevel gear 26 and the fourth bevel gear 30 are the same in size, thread grooves are formed in the two clamping blocks 20, and the two threaded rods 19 are in threaded connection with the clamping blocks 20 through the thread grooves.
Three grip blocks 24 all set up to the arc structure, and glass body 9 adopts the transparent glass material preparation to form, and the lateral wall of glass body 9 is carved with the scale mark, and backup pad 17 and movable block 11 all are located the symmetry line of two riser 2, and backup pad 17 offsets with the roof and the diapire of measured rod 25 respectively with movable block 11, and movable block 11 initial position bottom is just to the zero scale mark on the glass body 9.
In the present invention, the measured bar 25 is first placed between the two holding blocks 20, and the measured bar 25 is made to face the sliding groove 5, by rotating the handle 33, the rotating disk 32 is rotated, the rotating disk 32 drives the driving shaft 31 to rotate, thereby rotating the fourth bevel gear 30, causing the driving shaft 31 to drive the rotating shaft 28 to rotate through the engagement of the fourth bevel gear 30 and the third bevel gear 29, the rotating shaft 28 drives the threaded rod 19 to rotate through the meshing action of the second bevel gear 27 and the first bevel gear 26, the threaded rod 19 drives the clamping block 20 to move when rotating, so that the center of the tested rod 25 is opposite to the support plate 17 through the matching grooves 21 in the two clamping blocks 20 and the tested rod 25, the second electric telescopic rod 23 is started, so that the second electric telescopic rod 23 drives the clamping plate 24 to move to clamp the side wall of the tested rod 25.
After the clamping is finished, the first electric telescopic rod 7 is started to enable the first electric telescopic rod 7 to drive the moving block 11 to move upwards to be abutted against the measured rod 25, the bottom end of the moving block 11 is flush with the zero scale mark of the scale mark at the moment, the weight body 18 is additionally arranged on the supporting plate 17, the supporting plate 17 applies pressure to the measured rod 25, the pressure applied to the measured rod 25 can be displayed on the force sensor 13, the measured rod 25 can extrude the moving block 11 to enable the moving block 11 to move downwards due to the fact that the bending amount generated by the pressure is applied to the moving block 25, a worker can visually feel the bending amount of the measured rod 25 by observing the scale mark on the glass body 9, and the operation is simple.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (8)
1. A comprehensive experiment device for teaching material mechanics experiments comprises a bottom plate (1) and is characterized in that two vertical plates (2) are symmetrically welded to the top wall of the bottom plate (1), a top plate (3) is welded to the top wall of the two vertical plates (2) jointly, four universal wheels (4) which are symmetrical to each other are arranged on the bottom wall of the bottom plate (1), sliding grooves (5) are formed in one sides, which are symmetrical to each other, of the two vertical plates (2), cavities (6) are symmetrically formed in the bottom plate (1), the two cavities (6) correspond to the two sliding grooves (5) respectively, a first electric telescopic rod (7) is welded to the top wall of the bottom plate (1), a fixing plate (8) is welded to the free end of the first electric telescopic rod (7), and a glass body (9) and a limiting plate (10) are fixed to the top wall of the fixing plate (8) respectively, the glass fixing device is characterized in that a first spring (12) is welded on the top wall of the fixing plate (8), the other end of the first spring (12) is welded with the moving block (11), the glass body (9) and the limiting plate (10) are connected with the moving block (11) in a sliding mode, the top plate (3) is connected with a loading device, and a clamping and fixing device is connected into the sliding groove (5).
2. The comprehensive experiment equipment for teaching material mechanics experiments is characterized in that the loading device comprises a force sensor (13), the force sensor (13) is fixedly connected with the bottom wall of the top plate (3), a second spring (14) is fixed on the bottom wall of the force sensor (13), a connecting plate (15) is welded at the other end of the second spring (14), a placing column (16) is welded at the bottom wall of the connecting plate (15), a supporting plate (17) is welded at the bottom wall of the placing column (16), and a weight body (18) is placed on the top wall of the supporting plate (17).
3. The comprehensive experimental device for teaching experiments of mechanics of materials according to claim 2, it is characterized in that the clamping and fixing device comprises two threaded rods (19), the two threaded rods (19) are respectively and rotatably connected with one sides of the two sliding grooves (5) far away from the opening, the two threaded rods (19) are both in threaded connection with clamping blocks (20), matching grooves (21) are respectively arranged on one sides corresponding to the two clamping blocks (20), three grooves (22) are circumferentially arrayed on the groove wall of the matching groove (21), second electric telescopic rods (23) are welded at one ends of the three grooves (22) far away from the opening, the welding of the free end of second electric telescopic handle (23) has grip block (24), and is three grip block (24) are the common centre gripping of being surveyed pole (25), threaded rod (19) are connected with synchronous slewing mechanism.
4. The comprehensive experimental equipment for teaching material mechanics experiments according to claim 3, wherein the synchronous rotating mechanism comprises a first bevel gear (26), the first bevel gear (26) is welded and fixed with a threaded rod (19), the first bevel gear (26) is engaged with a second bevel gear (27), a rotating shaft (28) is welded at the rotating center of the second bevel gear (27), the rotating shaft (28) penetrates through the side wall of the sliding groove (5) and extends into the cavity (6), a third bevel gear (29) is welded on the rotating shaft (28), the third bevel gear (29) is located inside the cavity (6), two cavities (6) are jointly and rotatably connected with a driving shaft (31), the driving shaft (31) penetrates through the side wall of one cavity (6) and extends outwards and is welded with a rotating disc (32), the handle (33) is welded on the side wall of the rotating disc (32), the driving shaft (31) is symmetrically welded with two fourth bevel gears (30), and the two fourth bevel gears (30) are respectively meshed with the two third bevel gears (29).
5. The comprehensive experimental device for teaching materials mechanics experiment according to claim 4, wherein the rotating shaft (28) is rotatably connected with the side wall of the cavity (6), the second bevel gear (27) and the third bevel gear (29) have the same size, and the first bevel gear (26) and the fourth bevel gear (30) have the same size.
6. The comprehensive experiment equipment for teaching material mechanics experiments is characterized in that threaded grooves are formed in the two clamping blocks (20), and the two threaded rods (19) are in threaded connection with the clamping blocks (20) through the threaded grooves.
7. The comprehensive experiment equipment for teaching material mechanics experiments is characterized in that the three clamping plates (24) are arranged in an arc-shaped structure, the glass body (9) is made of transparent glass materials, scale marks are marked on the side wall of the glass body (9), and the supporting plate (17) and the moving block (11) are located on the symmetrical line of the two vertical plates (2).
8. The comprehensive experimental device for teaching materials mechanics experiment according to claim 7, wherein the supporting plate (17) and the moving block (11) are respectively abutted against the top wall and the bottom wall of the measured rod (25), and the bottom end of the initial position of the moving block (11) is directly opposite to the zero graduation line on the glass body (9).
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| CN202111087637.5A CN113628513B (en) | 2021-09-16 | 2021-09-16 | Comprehensive experimental equipment for teaching material mechanics experiment |
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