CN116343575B - Experiment demonstration device for gear tooth bar transmission - Google Patents
Experiment demonstration device for gear tooth bar transmission Download PDFInfo
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- CN116343575B CN116343575B CN202310587964.XA CN202310587964A CN116343575B CN 116343575 B CN116343575 B CN 116343575B CN 202310587964 A CN202310587964 A CN 202310587964A CN 116343575 B CN116343575 B CN 116343575B
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- 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
- G09B25/00—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes
- G09B25/02—Models for purposes not provided for in G09B23/00, e.g. full-sized devices for demonstration purposes of industrial processes; of machinery
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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Abstract
The invention discloses an experimental demonstration device for gear tooth rod transmission, which relates to the field of teaching demonstration and comprises a support, wherein the top end of the support is provided with a plurality of transmission parts which are distributed left and right at intervals, each transmission part comprises a conversion assembly and a display assembly which are connected with the support, the conversion assembly is connected with the display assembly, various combinations of the conversion assembly are rotated and displayed through the display assembly, the outer surface of a sliding block is in sliding connection with the inner wall of a sliding groove, so that a first gear can be adjusted on a rotating rod, the requirements under different conditions are met, when the rotating rod rotates, a screw rod connected to the rotating rod is driven to rotate, a screw sleeve which is slidably arranged can slide on a linear track, and further, the transmission efficiency of the first gear after being mutually combined is displayed on the moving distance of the screw sleeve, and the first gear is convenient for people to understand.
Description
Technical Field
The invention relates to a teaching demonstration technology, in particular to an experimental demonstration device for gear tooth rod transmission.
Background
Along with the development of the Chinese manufacturing industry, the demand of society for talents in the mechanical industry is larger and larger, and the teaching significance of mechanical principle courses is more and more remarkable, however, students have no knowledge about mechanical principles only by virtue of the explanation on books, and abstract knowledge is visualized, embodied and vivid by virtue of auxiliary tools. Important parts in the physics discipline relate to comparatively extensively, often demonstrate through many experiments in the teaching of reality, let the student understand deeply, in order to be convenient for carry out the teaching to and make the student understand more easily, generally adopt corresponding presentation device to demonstrate.
In the Chinese patent of invention with publication number of CN104361821B, a gear generation demonstration device for teaching is disclosed, which fixes drawing paper on a semicircular base plate, and places the drawing paper under a soft rack seal, then the involute profile of the gear can be drawn on the drawing paper automatically by shaking a driving handle, the speed is high, and the efficiency is high; the axial clutch component is arranged between the driving handle and the first driving gear, so that when the pressing block presses the pressing plate, namely the soft rack seal presses rack outline marks on the drawing paper, the supporting plate stops moving left and right, and at the moment, the drawing paper also stops rotating at the same time, and the phenomenon that the pressed tooth outline is blurred due to the fact that the drawing paper rotates when the rack outline is pressed is prevented; in addition, because semicircle base plate passes through stay cord and layer board alternately fixed connection, and the layer board is when controlling the removal, semicircle base plate is synchronous rotation to simulate the transmission process of wheel base and cutter, with traditional gear generator adopting gear and rack drive to realize the transmission process between wheel base and cutter, realized gapless transmission, make the profile of tooth that draws more clear.
When the conventional experimental demonstration device for gear rod transmission is used, the gear transmission demonstration device is fixed in structure, the angle of the device cannot be changed according to the requirements of actual users, the device is required to be moved manually, and demonstration is performed on different directions.
Disclosure of Invention
The invention aims to provide an experimental demonstration device for gear tooth bar transmission, which aims to solve the defects in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions:
an experimental demonstration device for gear tooth bar transmission, comprising: the device comprises a bracket, wherein the top end of the bracket is provided with a plurality of transmission parts which are distributed left and right at intervals, each transmission part comprises a conversion assembly and a display assembly which are connected with the bracket, the conversion assembly is connected with the display assembly, and various combinations of the conversion assemblies are displayed in a rotating way through the display assembly; the conversion assembly comprises two adjusting blocks which are arranged at intervals in the front-back direction and a rotating rod which is rotatably connected between the two adjusting blocks, a plurality of groups of first gears are slidably arranged on the outer surface of the rotating rod, and the first gears on the adjacent rotating rods can be in combined transmission; and one side of the first gear is provided with a limiting piece, and the first gear which is slidably arranged on the rotating rod is fixed through the limiting piece.
Further, a plurality of axially extending sliding grooves are formed in the rotating rod, the sliding grooves are uniformly distributed on the outer surface of the rotating rod, a sliding block corresponding to the sliding grooves is arranged on the inner wall of the first gear, and the outer surface of the sliding block is in sliding connection with the inner wall of the sliding groove.
Further, the limiting piece comprises a circular plate connected with the first gear, a plurality of support columns are uniformly arranged at one end of the circular plate, the support columns are far away from one end of the circular plate, a circular ring is arranged at one end of the support columns, an arc-shaped block is rotatably arranged at the edge of the inner ring of the circular ring, an arc-shaped surface attached to the rotating rod is arranged at one end of the arc-shaped block, and the first gear sliding on the rotating rod is fixed.
Further, the top of arc piece is provided with the stopper, the top of plectane is connected with elastic mechanism, just elastic mechanism's top is connected with the commentaries on classics board, simultaneously the commentaries on classics board with the surface rotation of plectane is installed the drum, the bottom of commentaries on classics board seted up with the slotted hole that the stopper laminated mutually, the inner wall of slotted hole with the surface sliding connection of stopper, through elastic mechanism is right the commentaries on classics board is followed the gliding commentaries on classics board of drum inner wall and is moved about spacing.
Further, the show subassembly is including connecting the screw rod at the dwang front end, just the screw sleeve is installed in the surface rotation of screw rod, the upside of support is equipped with the straight line track that extends along screw rod axial, screw sleeve sliding connection is in straight line track.
Further, guide grooves which are in one-to-one correspondence with the adjusting blocks are formed in the upper side of the support, and the guide grooves extend left and right;
the rear end of the support is provided with a support plate, the support plate is connected to the support in a left-right sliding way through a movable block, the left side and the right side of the support plate are respectively provided with a fixed plate, holes extending forwards and backwards are formed in two sides of the two fixed plates, annular sliding blocks are slidably arranged on the inner walls of the holes on the opposite sides of the two fixed plates, a first rotating rod is arranged on the inner wall of the annular sliding blocks, gears II are arranged at the upper end and the lower end of the first rotating rod, and the outer surfaces of the gears II at the lower end are meshed with the outer surfaces of the gears I;
the first gear comprises a cylindrical gear and a conical gear, the cylindrical gear is meshed with the cylindrical gear on the adjacent rotating rod, and the conical gear is meshed with a gear at the lower end of the rotating rod.
Further, two supporting blocks are symmetrically arranged at the top end of the supporting plate, each supporting block is respectively and slidably connected in an outer hole of the fixing plate, a second rotating rod perpendicular to the first rotating rod is rotatably arranged on the inner wall of each supporting block, gears III are respectively arranged at two ends of the second rotating rod, and gears III at the opposite sides are meshed with gears II at the top end of the first rotating rod; the third gear and the second gear are conical gears.
Further, the opposite ends of the two second rotating rods are provided with linkage parts, and each linkage part comprises a round rod which is arranged at the two end parts of the second rotating rods and is coaxial with the second rotating rods, and a round tube which is sleeved between the two round rods; the outer surface of the round rod is provided with a bump, the inner wall of the round tube is provided with a groove, and the outer surface of the bump is in sliding connection with the inner wall of the groove.
Further, a supporting disc is fixed on each supporting block, a locating plate is arranged at the top end of the supporting disc, a third rotating rod perpendicular to the second rotating rod is rotatably arranged at the top end of the locating plate, a fourth gear is arranged at one end of the third rotating rod, the outer surface of the fourth gear is meshed with a gear three-phase of the second gear, a steering pointer is arranged at one end of the third rotating rod, which is far away from the fourth gear, and the steering pointer displays the rotation direction.
Further, a steering assembly is arranged at the bottom end of the support, the steering assembly comprises a steering rod connected with the support, a turntable is arranged at the bottom end of the steering rod, a groove hole is formed in the middle of the turntable, a power rod is rotatably arranged on the inner wall of the groove hole, a driving device is arranged at the bottom end of the power rod, a worm is fixedly arranged at the top end of the power rod, and a worm wheel meshed with the worm is fixedly arranged on the outer surface of the rotating rod;
the outer surface of the power rod is fixedly provided with a pointer rod, the top end of the turntable is provided with a pull rod, the pull rod is connected with the pointer rod through an elastic piece, and a limit rod is arranged between the pull rod and the pointer rod and positioned at the top end of the turntable;
the outer surface rotation of carousel is installed the lantern ring, a plurality of limit grooves have been seted up to the inner wall of lantern ring, limit groove evenly distributed in the inner wall of lantern ring, the inside of limit groove is provided with the spring, the one end of spring with limit groove inner wall connection, the other end install with limit groove inner wall sliding connection's support the piece, the surface of carousel seted up one with support the constant head tank that the piece laminated mutually.
Compared with the prior art, the experimental demonstration device for gear tooth bar transmission has the advantages that:
1. through the inner wall sliding connection of the surface of slider and spout, and then through the slider of installing on the inner wall of gear and the spout looks joint on the dwang when gear one rotates, thereby realize that gear one drives the dwang and rotate when rotating, simultaneously because slider and spout inner wall sliding connection, make gear one can adjust from beginning to end on the dwang, thereby the demand under the different conditions is adapted, when the dwang rotates, the screw rod of drive connection on the dwang rotates, and make slidable mounting's thread bush can slide on linear track, and then make gear one carry out the transmission efficiency after the combination each other show to the distance that the thread bush removed on, be convenient for people understand.
2. Make whole bull stick one carry out the lateral sliding on the support through annular slider, make it convenient dock with first gear, the degree of depth of the hole of the opposite one side of fixed plate reduces gradually simultaneously, the degree of depth of the hole of one side that is close to the backup pad more increases gradually, and the inner wall of hole is provided with a plurality of recesses, be used for carrying out the joint with annular slider end, annular slider's both ends constitute by spring beam and fixture block, make things convenient for annular slider to fix inside the hole, and carry out the transmission through bull stick one and bull stick two, the cooperation turns to the pointer show direction of rotation, and through the cooperation between gear two and the gear three, can realize reverse or syntropy rotation, wherein by turning to the pointer show steering angle, the convenience is observed the show it.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of an overall structure according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a transmission part structure according to an embodiment of the present invention;
FIG. 3 is an enlarged view of the structure A of FIG. 1;
fig. 4 is a schematic structural diagram of a limiting member according to an embodiment of the present invention;
FIG. 5 is a cross-sectional view of the internal structure of a limiting member according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a movable block structure according to a second embodiment of the present invention;
FIG. 7 is a cross-sectional view of a movable block according to a second embodiment of the present invention;
fig. 8 is a schematic structural diagram of a linkage part according to a second embodiment of the present invention;
FIG. 9 is a schematic diagram of an overall structure according to a third embodiment of the present invention;
FIG. 10 is a cross-sectional view of an internal structure provided in a third embodiment of the present invention;
fig. 11 is a schematic structural diagram of a steering assembly according to a third embodiment of the present invention.
Reference numerals illustrate:
1. a bracket; 2. a transmission part; 11. a driving device; 12. a conversion assembly; 13. a display assembly; 21. an adjusting block; 22. a rotating lever; 23. a first gear; 24. a limiting piece; 25. a chute; 26. a slide block; 27. a circular plate; 28. a support column; 29. a circular ring; 31. an arc-shaped block; 32. a limiting block; 33. an elastic mechanism; 34. a rotating plate; 35. a cylinder; 36. a slot hole; 37. a screw; 38. a thread sleeve; 39. a linear rail; 41. a movable block; 42. a support plate; 43. a fixing plate; 44. a hole; 45. an annular slide block; 46. a first rotating rod; 47. a second gear; 48. a support block; 49. a second rotating rod; 51. a third gear; 52. a linkage part; 53. a round tube; 54. a round bar; 55. a bump; 56. a groove; 57. a support plate; 58. a positioning plate; 59. a third rotating rod; 61. a fourth gear; 62. a steering pointer; 71. a steering assembly; 72. a steering lever; 73. a turntable; 74. a groove hole; 75. a power lever; 76. a worm; 77. a worm wheel; 78. a pointer lever; 79. a pull rod; 81. an elastic member; 82. a limit rod; 83. a collar; 84. a limiting groove; 85. a spring; 86. abutting blocks; 87. and a positioning groove.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
Embodiment one:
referring to fig. 1 to 5, an experimental demonstration device for gear tooth bar transmission includes a bracket 1, wherein a support column is provided at a bottom end of the bracket 1 for supporting the entire bracket 1 while maintaining stability of the entire bracket 1.
The top end of the bracket 1 is provided with a plurality of transmission parts 2 which are distributed at intervals left and right, each transmission part 2 comprises a conversion assembly 12 and a display assembly 13 which are connected with the bracket 1, the conversion assembly 12 is connected with the display assembly 13, and various combinations of the conversion assemblies 12 are displayed in a rotating way through the display assembly 13;
meanwhile, one end of the bracket 1 can be provided with a driving component, the conversion component 12 and the display component 13 are sequentially connected, and the driving component is composed of equipment with power output such as a motor and the like, and can be operated manually;
the conversion assembly 12 comprises two adjusting blocks 21 which are arranged at intervals back and forth and a rotating rod 22 which is rotatably connected between the two adjusting blocks 21, a plurality of groups of first gears 23 are slidably arranged on the outer surface of the rotating rod 22, and the first gears 23 on the adjacent rotating rods 22 can be transmitted in a combined mode.
The gears 23 with different tooth pitches are mutually combined to realize adjustment of different rotating speeds, one side of each gear 23 is provided with a limiting piece 24, the gears 23 which are slidably arranged on the rotating rod 22 are fixed through the limiting pieces 24, after the gears 23 are moved to a certain position, the gears 23 are stably fixed at the moved position through the limiting pieces 24, and when the gears are butted with the gears 23 on the other rotating rod 22, the two gears 23 in the butted state are ensured to be stable;
the rotating rod 22 is provided with a plurality of axially extending sliding grooves 25, the sliding grooves 25 are uniformly distributed on the outer surface of the rotating rod 22, meanwhile, the inner wall of the first gear 23 is provided with sliding blocks 26 corresponding to the sliding grooves 25, the outer surface of each sliding block 26 is in sliding connection with the inner wall of each sliding groove 25, and when the first gear 23 rotates, the sliding blocks 26 arranged on the inner wall of the first gear 23 are clamped with the sliding grooves 25 on the rotating rod 22, so that the first gear 23 drives the rotating rod 22 to rotate during rotation, and meanwhile, the sliding blocks 26 are in sliding connection with the inner wall of the sliding grooves 25, so that the first gear 23 can be adjusted front and back on the rotating rod 22, and combined transmission display under different conditions is realized;
the limiting piece 24 comprises a circular plate 27 connected with the first gear 23, a plurality of supporting columns 28 are uniformly arranged at one end of the circular plate 27, a circular ring 29 is arranged at one end, far away from the circular plate 27, of each supporting column 28, the circular ring 29 is positioned in the middle of the circular plate 27 and the rotating plate 34, an arc-shaped block 31 is rotatably arranged at the inner ring edge of the circular ring 29, an arc-shaped surface attached to the rotating rod 22 is arranged at one end of the arc-shaped block 31, and is used for fixing the first adjustable gear 23 on the rotating rod 22, and when the first gear 23 moves to a moving position, the outer surface of the rotating rod 22 is fixed through the arc-shaped block 31;
the top end of the arc-shaped block 31 is provided with a limiting block 32, the top end of the circular plate 27 is connected with an elastic mechanism 33, the elastic mechanism 33 is a torsion spring and other elastic components, one end of the elastic mechanism 33 far away from the circular plate 27 is connected with a rotating plate 34, meanwhile, the rotating plate 34 and the outer surface of the circular plate 27 are rotatably provided with a cylinder 35, one end of the rotating plate 34 close to the limiting block 32 is provided with a slotted hole 36 which is attached to the limiting block 32, the inner wall of the slotted hole 36 is in sliding connection with the outer surface of the limiting block 32, the rotating plate 34 sliding along the inner wall of the cylinder 32 can be movably limited through the elastic mechanism 33, when the first gear 23 moves, the rotating plate 34 is rotated, so that the first gear 23 can move on the rotating rod 22, and after the first gear 23 moves to a certain position, the rotating plate 34 is loosened, the arc-shaped block 31 sliding on the rotating plate 34 is driven to approach the middle through the elastic mechanism 33 connected with the rotating plate 34, so that the first gear 23 is stably fixed on the rotating rod 22;
the display assembly 13 comprises a screw rod 37 connected with the rotating rod 22, a thread bush 38 is arranged on the outer surface of the screw rod 37 in a threaded manner, a linear rail 39 is arranged at the top end of the support 1, the inner wall of the linear rail 39 is slidably connected with the bottom end of the thread bush 38 and used for limiting the rotation of the thread bush 38, the inner wall of the linear rail 39 is in a linear guide rail shape, the thread bush 38 moves forwards when the screw rod 37 rotates, the sliding track of the thread bush 38 is limited through the linear rail 39, and gear transmission is displayed through the movement track of the thread bush 38.
In addition, when the rotating rod 22 rotates, the screw rod 37 connected to the rotating rod 22 is driven to rotate, and the slidably mounted threaded sleeve 38 can slide on the linear track 39, so that the transmission efficiency of the first gear 23 after being combined with each other is displayed on the moving distance of the threaded sleeve 38, and the understanding of people is facilitated.
Embodiment two:
referring to fig. 1 to 8, the present embodiment provides a technical solution based on the first embodiment:
the upper side of the bracket 1 is provided with guide grooves corresponding to the adjusting blocks 21 one by one, each guide groove extends left and right, the guide grooves are used for adjusting the position of the rotating rod 22, and the same linear rail 39 is also connected to the bracket 1 in a sliding manner and is used for adjusting the rotating rod 22 and the screw rod 37 synchronously.
The rear end of the bracket 1 is provided with a supporting plate 42, the supporting plate 42 is connected on the bracket 1 in a left-right sliding way through a movable block 41, the left side and the right side of the supporting plate 42 are respectively provided with a fixed plate 43, both sides of the two fixed plates 43 are respectively provided with a hole 44 extending forwards and backwards, the inner walls of the holes 44 on the opposite sides of the two fixed plates 43 are slidably provided with an annular sliding block 45, the inner wall of the annular sliding block 45 is provided with a first rotating rod 46, the upper end and the lower end of the first rotating rod 46 are respectively provided with a second gear 47, and the outer surface of the second gear 47 at the lower end is meshed with the outer surface of the first gear 23;
the first gear 23 comprises a cylindrical gear which is meshed with the cylindrical gear on the adjacent rotating rod 22, and a conical gear which is meshed with a second gear 47 at the lower end of the first rotating rod 46.
The movable block 41 can be detached from the bottom end of the bracket 1, and the movable block 41 is mounted on the bracket 1 when the movable block needs to be used.
The whole first rotating rod 46 slides forwards and backwards through the annular sliding block 45, so that the whole first rotating rod is convenient to butt against the first gear 23, meanwhile, the depth of the hole 44 on the opposite side of the fixed plate 43 is gradually reduced, the depth of the hole 44 on the side closer to the supporting plate 42 is gradually increased, a plurality of grooves are formed in the inner wall of the hole 44 and are used for being clamped with the annular sliding block 45, two ends of the annular sliding block 45 are composed of spring rods and clamping blocks, and the annular sliding block 45 is convenient to fix inside the hole 44;
two supporting blocks 48 are symmetrically arranged at the top end of the supporting plate 42, each supporting block 48 is respectively and slidably connected in an outer hole 44 of the fixing plate 43, meanwhile, a second rotating rod 49 perpendicular to the first rotating rod 46 is rotatably arranged on the inner wall of each supporting block 48, three gears 51 are arranged at two ends of the second rotating rod 49, and the third gears 51 at the opposite side are meshed with the second gears 47 at the top end of the first rotating rod 46; the third gear 51 and the second gear 47 are conical gears, and the second gear 47 rotates to enable the third gear 51 to reversely rotate;
the opposite ends of the two second rotating rods 49 are provided with linkage parts 52, and the linkage parts 52 comprise round rods 54 which are arranged at the end parts of the second rotating rods 49 and are coaxial with the second rotating rods 49, and round tubes 53 which are sleeved between the two round rods 54; the outer surface of the round rod 54 is provided with a bump 55, the inner wall of the round tube 53 is provided with a groove 56, and the outer surface of the bump 55 is slidably connected with the inner wall of the groove 56.
The front and back positions of the first rotating rod 46 are adjusted, the third gear 51 is separated from the second gear 47, the two second rotating rods 49 are connected through the round tube 53, the same-direction rotation of the third gear 51 is achieved, and the rotation result can be observed through the steering pointer 62.
The supporting blocks 48 are fixedly provided with supporting plates 57, the top ends of the supporting plates 57 are provided with positioning plates 58, the top ends of the positioning plates 58 are rotatably provided with a third rotating rod 59 perpendicular to the second rotating rod 49, one end of the third rotating rod 59 is provided with a fourth gear 61, the outer surface of the fourth gear 61 is meshed with a third gear 51 far away from the second gear 47, one end of the third rotating rod 59 far away from the fourth gear 61 is provided with a steering pointer 62, and the rotating direction is displayed through the steering pointer 62.
And through the cooperation between gear two 47 and gear three 51, can realize reverse or the syntropy rotation, wherein demonstrate the steering angle by steering pointer 62, conveniently observe the demonstration thereof.
Embodiment III:
referring to fig. 9 to 11, the present embodiment provides a new solution of another replaceable driving component based on the first embodiment: the bottom end of the bracket 1 is provided with a steering assembly 71, the steering assembly 71 comprises a steering rod 72 connected with the bracket 1, the steering rod 72 is fixedly arranged below the bracket 1, a turntable 73 is arranged at the bottom end of the steering rod 72, meanwhile, the steering rod 72 is fixedly connected with the top end of the turntable 73, a groove hole 74 is formed in the middle position of the turntable 73, a power rod 75 is rotatably arranged on the inner wall of the groove hole 74, the bottom end of the power rod 75 is provided with a driving device 11, the driving device 11 is equipment with power output such as a motor, the bottom of the driving device 11 is fixedly connected with the inner wall of a lantern ring 83, the output end of the driving device 11 is fixedly connected with the bottom end of the power rod 75 through a speed reducer, a worm 76 is fixedly arranged at the top end of the power rod 75, the worm 76 is fixedly arranged on the power rod 75, the worm 76 is driven to rotate through the power rod 75, a worm wheel 77 meshed with the worm 76 is fixedly arranged on the outer surface of the rotating rod 22, and the rotating rod 22 can slide left and right on the bracket 1;
the outer surface of the power rod 75 is fixedly provided with a pointer rod 78, the pointer rod 78 is driven to rotate through the rotation of the power rod 75, the pointer rod 78 rotates along with the power rod 75, the top end of the rotary table 73 is fixedly provided with a pull rod 79, the pull rod 79 is connected with the pointer rod 78 through an elastic piece 81, two ends of the elastic piece 81 are respectively connected with the pull rod 79 and the outer side of the pointer rod 78 in a rotating mode, when the pointer rod 78 rotates, one end of the elastic piece 81 is rotatably arranged on the pull rod 79, and then when the pointer rod 78 drives the elastic piece 81 to move, the elastic piece 81 is pulled, the elastic piece 81 is composed of two concave plates and sliding plates, the inner walls of the two concave plates are in sliding connection with the outer surfaces of the sliding plates, meanwhile, two ends of the sliding plates are respectively provided with spring blocks, and one ends, far away from each other, of the two spring blocks are respectively fixedly connected with the inner walls of the two concave plates, between the pull rod 79 and the pointer rod 78, and the top end of the rotary table 73 is fixedly provided with a limiting rod 82 for limiting the rotation of the pointer rod 78;
the outer surface rotation of carousel 73 installs lantern ring 83, the user can be fixed the putting in demonstration position with lantern ring 83, lantern ring 83 can be for experimental demonstration device bottom sprag, a plurality of restriction grooves 84 have been seted up to the inner wall of lantern ring 83, and evenly distributed is in the inner wall of lantern ring 83, the inside of restriction groove 84 is provided with spring 85, the one end and the restriction groove 84 inner wall fixed connection of spring 85 simultaneously, the other end fixed mounting has the piece 86 that supports with restriction groove 84 inner wall sliding connection, a constant head tank 87 that can with supporting piece 86 looks joint has been seted up to the surface of carousel 73, the rotation of whole carousel 73 is intermittent type spacing through constant head tank 87, and then when carrying out angle modulation through drive arrangement 11, still can provide power for whole demonstration device.
When the driving device 11 drives the power rod 75 to rotate, the pointer rod 78 mounted on the power rod 75 rotates, the pointer rod 78 is rotationally connected with the turntable 73 through an elastic piece 81, the elastic piece 81 is a component with elastic functions such as a spring, a positioning groove 87 is formed in the turntable 73, the positioning groove 87 is clamped with the abutting block 86, the elastic piece 81 is stretched after the pointer rod 78 rotates, when the abutting block 86 is jacked up by the top end of the pointer rod 78, the turntable 73 is separated from the abutting block 86, the turntable 73 is driven to rotate through the acting force of the elastic piece 81 until the positioning groove 87 is clamped with the next abutting block 86, the pointer rod 78 is limited through a limiting rod 82 arranged on the turntable 73, and reciprocating operation is performed.
Working principle: when gear transmission teaching or experiment is required, the whole equipment is placed on a tabletop or a flat ground, and one of the adjusting blocks 21 is moved to the position right above the worm 76, so that a worm wheel 77 on a rotating rod 22 connected with the adjusting block 21 is meshed with the worm 76, the bottom end of the worm 76 meshed with the worm wheel 77 is fixed with a power rod 75, and a driving device 11 is arranged at the bottom end of the power rod 75 to provide power for the whole equipment;
meanwhile, when the rotating rods 22 rotate, the other adjusting block 21 is moved to the middle position, the first gears 23 on the two rotating rods 22 are randomly combined, after the combination is completed, the driving device 11 is started, the worm 76 drives the worm wheel 77 and the rotating rods 22 to rotate, and further under the transmission of the first gears 23, the two rotating rods 22 rotate, and the rotation directions are opposite, as the other ends of the two rotating rods 22 are connected with the screw rods 37, the thread sleeves 38 are arranged on the outer surfaces of the two screw rods 37 in a threaded manner, under the condition that the two rotating rods 22 rotate, the two thread sleeves 38 are driven to slide on the linear rails 39, and the thread sleeves 38 reach different sliding speeds on the inner walls of the linear rails 39 by controlling the engagement of the first gears 23 with different tooth pitches on the two rotating rods 22;
when the movable block 41 is arranged at the bottom end of the bracket 1, the annular sliding block 45 which is slidably arranged on the fixed plate 43 is moved to the position right above the first gear 23, so that the second gear 47 is meshed with the first gear 23, and the second gear 47 is driven to rotate through the rotation of the first gear 23, as the third gear 51 is arranged on two sides of the other end of the second gear 47, and the third gear 51 can be slidably adjusted on two sides of the fixed plate 43, when the third gear 51 is meshed with the second gear 47, the third gear 51 is driven to rotate, and the turning pointer 62 displays the rotation condition of a plurality of gears after transmission through the rotation fit of the fourth gear 61, and when the third gear 51 is meshed with the second gear 47 at the same time through the rotation direction of the third gear 51, the two turning pointers 62 display the driving effect of different transmission under the driving of the same transmission gear;
meanwhile, when the driving device 11 is started, the whole demonstration device drives the whole demonstration device to rotate along with the rotation of the driving device 11 when the whole demonstration device displays the gear transmission, so that the requirement of recording by a plurality of angle observers is met.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (6)
1. An experimental demonstration device for gear tooth bar transmission, which is characterized by comprising:
the device comprises a bracket (1), wherein a plurality of transmission parts (2) which are distributed at intervals left and right are arranged at the top end of the bracket (1), each transmission part (2) comprises a conversion assembly (12) and a display assembly (13) which are connected with the bracket (1), the conversion assembly (12) is connected with the display assembly (13), and various combinations of the conversion assemblies (12) are displayed in a rotating mode through the display assembly (13);
the conversion assembly (12) comprises two adjusting blocks (21) which are arranged at intervals in the front-back direction and a rotating rod (22) which is rotatably connected between the two adjusting blocks (21), a plurality of groups of first gears (23) are slidably arranged on the outer surface of the rotating rod (22), and the first gears (23) on the adjacent rotating rods (22) can be transmitted in a combined way;
a limiting piece (24) is arranged on one side of the first gear (23), and the first gear (23) which is slidably arranged on the rotating rod (22) is fixed through the limiting piece (24);
a plurality of axially extending sliding grooves (25) are formed in the rotating rod (22), the sliding grooves (25) are uniformly distributed on the outer surface of the rotating rod (22), sliding blocks (26) corresponding to the sliding grooves (25) are arranged on the inner wall of the first gear (23), and the outer surface of each sliding block (26) is in sliding connection with the inner wall of each sliding groove (25);
the limiting piece (24) comprises a circular plate (27) connected with the first rotary rod (22), a plurality of support columns (28) are uniformly arranged at one end of the circular plate (27), a circular ring (29) is arranged at one end, far away from the circular plate (27), of the support columns (28), an arc-shaped block (31) is rotatably arranged at the edge of the inner ring of the circular ring (29), an arc-shaped surface attached to the first rotary rod (22) is arranged at one end of the arc-shaped block (31) and used for fixing the first rotary rod (22) sliding on the first rotary rod (23);
the novel rotary table is characterized in that a limiting block (32) is arranged at the top end of the arc-shaped block (31), an elastic mechanism (33) is connected to the top end of the circular plate (27), a rotary plate (34) is connected to the top end of the elastic mechanism (33), a cylinder (35) is rotatably arranged on the outer surface of the circular plate (27) and simultaneously the rotary plate (34), a slot hole (36) attached to the limiting block (32) is formed in the bottom end of the rotary plate (34), the inner wall of the slot hole (36) is in sliding connection with the outer surface of the limiting block (32), and the rotary plate (34) sliding along the inner wall of the cylinder (35) is movably limited through the elastic mechanism (33);
the display assembly (13) comprises a screw rod (37) connected to the front end of the rotating rod (22), a threaded sleeve (38) is rotatably arranged on the outer surface of the screw rod (37), a linear track (39) extending along the axial direction of the screw rod (37) is arranged on the upper side of the support (1), and the threaded sleeve (38) is slidably connected in the linear track (39).
2. The experimental demonstration device for gear tooth bar transmission according to claim 1, wherein guide grooves which are in one-to-one correspondence with the adjusting blocks (21) are arranged on the upper side of the bracket (1), and each guide groove is arranged in a left-to-right extending manner;
the rear end of the support (1) is provided with a support plate (42), the support plate (42) is connected to the support (1) in a left-right sliding mode through a movable block (41), the left side and the right side of the support plate (42) are respectively provided with a fixed plate (43), holes (44) extending forwards and backwards are formed in two sides of the fixed plates (43), annular sliding blocks (45) are slidably mounted on the inner walls of the holes (44) on the opposite sides of the two fixed plates (43), a first rotating rod (46) is mounted on the inner walls of the annular sliding blocks (45), two gears (47) are arranged at the upper end and the lower end of the first rotating rod (46), and the outer surfaces of the two gears (47) at the lower end are meshed with the outer surfaces of the first gears (23);
the first gear (23) comprises a cylindrical gear and a conical gear, the cylindrical gear is meshed with the cylindrical gear on the adjacent rotating rod (22), and the conical gear is meshed with the second gear (47) at the lower end of the first rotating rod (46).
3. The experimental demonstration device for gear tooth bar transmission according to claim 2, wherein two supporting blocks (48) are symmetrically arranged at the top end of the supporting plate (42), each supporting block (48) is respectively and slidably connected in an outer hole (44) of the fixing plate (43), meanwhile, a second rotating rod (49) perpendicular to the first rotating rod (46) is rotatably arranged on the inner wall of each supporting block (48), three gears (51) are arranged at two ends of the second rotating rod (49), and the third gears (51) at the opposite side are meshed with the second gears (47) at the top end of the first rotating rod (46); the third gear (51) and the second gear (47) are conical gears.
4. A gear tooth bar transmission experimental demonstration device according to claim 3, characterized in that the opposite ends of the two rotating bars (49) are provided with a linkage part (52), the linkage part (52) comprises a round bar (54) which is arranged at the end part of the two rotating bars (49) and is coaxial with the two rotating bars (49) and a round tube (53) which is sleeved between the two round bars (54);
the outer surface of round bar (54) is provided with lug (55), recess (56) have been seted up to the inner wall of pipe (53), the outer surface of lug (55) with the inner wall sliding connection of recess (56).
5. The experimental demonstration device for gear tooth bar transmission according to claim 4, wherein a supporting disc (57) is fixed on each supporting block (48), a positioning plate (58) is arranged at the top end of each supporting disc (57), a third rotating rod (59) perpendicular to the second rotating rod (49) is rotatably arranged at the top end of each positioning plate (58), a fourth gear (61) is arranged at one end of the third rotating rod (59), the outer surface of the fourth gear (61) is meshed with the third gear (51) far away from the second gear (47), a steering pointer (62) is arranged at one end, far away from the fourth gear (61), of the third rotating rod (59), and the rotating direction is displayed through the steering pointer (62).
6. The experimental demonstration device for gear tooth bar transmission according to claim 5, wherein a steering assembly (71) is arranged at the bottom end of the bracket (1), the steering assembly (71) comprises a steering bar (72) connected with the bracket (1), a rotary table (73) is arranged at the bottom end of the steering bar (72), a concave hole (74) is formed in the middle position of the rotary table (73), a power bar (75) is rotatably arranged on the inner wall of the concave hole (74), a driving device (11) is arranged at the bottom end of the power bar (75), a worm (76) is fixedly arranged at the top end of the power bar (75), and a worm wheel (77) meshed with the worm (76) is fixedly arranged on the outer surface of the rotary bar (22);
the outer surface of the power rod (75) is fixedly provided with a pointer rod (78), the top end of the turntable (73) is provided with a pull rod (79), the pull rod (79) is connected with the pointer rod (78) through an elastic piece (81), and a limit rod (82) is arranged between the pull rod (79) and the pointer rod (78) and positioned at the top end of the turntable (73);
the outer surface rotation of carousel (73) is installed lantern ring (83), a plurality of restriction grooves (84) have been seted up to the inner wall of lantern ring (83), restriction groove (84) evenly distributed in the inner wall of lantern ring (83), the inside of restriction groove (84) is provided with spring (85), one end of spring (85) with restriction groove (84) inner wall connection, the other end install with restriction groove (84) inner wall sliding connection support piece (86), the surface of carousel (73) seted up one with support piece (87) that piece (86) laminated mutually.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310587964.XA CN116343575B (en) | 2023-05-24 | 2023-05-24 | Experiment demonstration device for gear tooth bar transmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310587964.XA CN116343575B (en) | 2023-05-24 | 2023-05-24 | Experiment demonstration device for gear tooth bar transmission |
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| CN116343575B true CN116343575B (en) | 2023-07-21 |
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| CN216623582U (en) * | 2021-10-12 | 2022-05-27 | 舟山航海学校 | Mechanical transmission demonstration teaching aid |
| CN115311908A (en) * | 2022-08-17 | 2022-11-08 | 浙江广厦建设职业技术大学 | Mathematics teaching device |
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| RU2004131799A (en) * | 2004-11-01 | 2006-04-10 | Государственное образовательное учреждение высшего профессионального образовани " Пензенский Государственный Университет" (RU) | TRAINING INSTRUMENT FOR DEMONSTRATION OF A GEAR TRANSFER USING A KODOSKOP |
| CN104361821A (en) * | 2014-11-28 | 2015-02-18 | 宁波大学 | Gear generating presentation device for teaching |
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