CN111524440B - Engine running state demonstration device - Google Patents
Engine running state demonstration device Download PDFInfo
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- CN111524440B CN111524440B CN202010499041.5A CN202010499041A CN111524440B CN 111524440 B CN111524440 B CN 111524440B CN 202010499041 A CN202010499041 A CN 202010499041A CN 111524440 B CN111524440 B CN 111524440B
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- 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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Abstract
The invention discloses an engine running state demonstration device which comprises an engine shell, wherein a stroke progress demonstration mechanism is arranged on the side surface of the engine shell, an airflow path demonstration mechanism is arranged on the engine shell, and a cylinder acting demonstration mechanism is arranged in the engine shell. The invention has the advantages that a student can clearly know which stroke the current piston is in through an intuitive mode, the work of the student is more stable through the transmission of the V-21274, the student can be helped to clearly know the gas flowing condition through the action of the airflow path demonstration mechanism, and the stress condition in the engine can be simulated through the action of the cylinder work-applying demonstration mechanism.
Description
Technical Field
The invention relates to the technical field of automobile teaching aids, in particular to an engine running state demonstration device.
Background
The engine is a power mechanism which is widely applied, the engine is a representative machine, for example, a cylinder, a piston, a valve, a crankshaft, a connecting rod, a gear and other transmission mechanisms are similar in many machines, standard parts such as fasteners are more frequently contacted in electric appliances and daily necessities, and at present, in the engine teaching practice of universities, an engine model is generally adopted to teach colleges;
an existing engine model, for example, a patent with patent number 201310680434.6 named as a modular electronically controlled engine model, can demonstrate the motion trajectory of a piston, but it is not intuitive for a novice student to know which stroke stage the piston is currently in, thereby increasing the difficulty of the student in understanding the engine, and it is impossible to intuitively know the flow path of gas during intake and exhaust, and it is impossible to demonstrate the force relationship between a cylinder and a piston, so that the student cannot quickly understand the internal structure and the working principle of the engine.
Disclosure of Invention
Aiming at the defects, the invention provides a demonstration device for the running state of an engine, which aims to solve the problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
an engine running state demonstration device comprises an engine shell, wherein a stroke progress demonstration mechanism is arranged on the side surface of the engine shell, an airflow path demonstration mechanism is arranged on the engine shell, and a cylinder acting demonstration mechanism is arranged in the engine shell;
the stroke progress demonstration mechanism comprises a first vertical bearing arranged at two ends of the upper end of an engine shell, two pairs of first vertical bearings are arranged, rotating shafts are arranged on inner rings of the first vertical bearings, the two rotating shafts are respectively positioned in the first vertical bearings, a first transmission wheel is arranged at one end of each rotating shaft, first horizontal bearings are arranged at two sides of the lower end of the engine shell, crankshafts are arranged on inner rings of the first horizontal bearings, two ends of each crankshaft are fixedly connected with the first horizontal bearings, a motor base is arranged on the side surface of the engine shell, a rotating motor is arranged in each motor base, the output end of each rotating motor is fixedly connected with one end of each crankshaft, a second transmission wheel is arranged at the other end of each crankshaft, a timing belt is arranged between the second transmission wheel and the first transmission wheel, a rotating disc is arranged at one end of each crankshaft, a fixed shaft is arranged on the side surface of each rotating disc close to an outer ring, and a protection box is arranged on the side surface of the engine shell; a rectangular slideway is arranged on the side surface of the protection box, a piston block is arranged on one side of the rectangular slideway, a first connecting rod is arranged at the lower end of the piston block, one end of the first connecting rod is hinged with the piston block, the other end of the first connecting rod is hinged with a fixed shaft, a v-shaped connecting rod, a lower end of a v-shaped connecting rod and a piston block are hinged, a first rack, a v-shaped chute and a second rack are arranged on one side of the upper end of the v-shaped connecting rod, a v-shaped fixing rod and a v-shaped connecting rod are arranged on the upper end of the v-shaped connecting rod, L-shaped fixing rods are arranged on the two sides of the v-shaped connecting rod and fixedly connected with the protection box, a second horizontal bearing is arranged on the side surface of the protection box, a rotating pipe is arranged on the inner ring of the second horizontal bearing, a first common bearing is arranged at the center of the rotating pipe, a second common bearing is arranged on one side of the common bearing, a first gear meshed with the first rack is arranged on the outer surface of the common bearing, a second gear meshed with the second rack is arranged on the outer ring of the second common bearing, triangular grooves are formed in the inner rings of the first gear and the second gear, a pawl is arranged on the outer surface of the rotating pipe and is provided with two rings, the pawl is hinged with the rotating pipe, and a V-shaped elastic sheet is arranged between the pawl and the rotating pipe;
the stroke progress demonstration mechanism further comprises a third common bearing at one end of the rotating pipe, a third gear is mounted on an outer ring of the third common bearing, a clockwork spring is mounted between the third gear and the rotating pipe, a first pin shaft is mounted on the side surface of the protection box, a fourth common bearing is mounted at one end of the pin shaft, a fourth gear is mounted on one side of the fourth common bearing, an inner ring of the fourth gear is meshed with the outer ring of the third gear, and a label is mounted on the outer ring of the fourth gear; a hemispherical groove is formed in the four outer rings of the gears, a supporting rod is installed at the upper end of the protection box, a hollow pipe is installed at the lower end of the supporting rod, a sliding rod is installed in the hollow pipe and is connected with the hollow pipe in a sliding mode, the sliding rod corresponds to the hemispherical groove in position, and a compression spring I is installed between the sliding rod and the hollow pipe;
the airflow path demonstration mechanism comprises an air inlet pipe at one end of the upper surface of the engine shell, and an exhaust pipe is arranged at the other end of the upper surface of the engine shell; the air inlet pipe, the blast pipe upper end is respectively installed L type support one, pneumatic impeller is installed to L type support one end, pneumatic impeller installs the side surface and rotates wheel one, rotate wheel one and pneumatic impeller fixed connection, pneumatic impeller installs the support column in one side, it has circular through-hole to open the support column upper end, install the sliding shaft in the circular through-hole, sliding shaft and circular through-hole sliding connection, sliding shaft installs rotation wheel two in one end, it corresponds with the position of rotating wheel one to rotate wheel two, contact switch is installed to the support column upper end, engine housing upper surface both sides are opened there is circular through-hole, install the valve in the circular through-hole, compression spring two is installed to the valve upper end, compression spring two one end and valve fixed connection, the compression spring two other ends and circular through-hole fixed connection, the pulley is installed to the valve upper end.
Further, the cylinder working demonstration mechanism comprises a piston cylinder on the inner surface of a cylinder barrel, a first loop bar is arranged at the lower end of the piston cylinder and hinged with the piston cylinder, a second loop bar is arranged at the center of a crankshaft and hinged with the crankshaft, the first loop bar is connected with the second loop bar in a sleeved mode, a rectangular groove is formed in the surface of one side of the loop bar, a rectangular block is arranged at the upper end of the second loop bar, a fourth compression spring is arranged between the first loop bar and the second loop bar, a second pin shaft is arranged on the surface of two sides of the loop bar, an L-shaped limiting groove is arranged on the surface of the side of the cylinder barrel, a sliding frame is arranged on one side of the L-shaped limiting groove, a fifth compression spring is arranged between the upper end of the sliding frame and the shell of the engine, a cross bar is arranged at the lower end of the sliding frame, a fifth common bearing is arranged on the surface of the side of the cylinder barrel, an elliptical disc is arranged on the inner circle of the common bearing, the elliptical disc is connected with the upper end of the sliding frame in a sliding mode, a driven wheel is arranged at the center of the elliptical disc, and a driving wheel is arranged at one end of a driving wheel, the driving wheel is provided with one, and a connecting belt is arranged between the driving wheel and the driven wheel.
Furthermore, a balancing weight is installed on one side of the crankshaft, and a first conical block is installed at one end of the rotating shaft.
Furthermore, a viewing port is formed on the side surface of the protection box.
Furthermore, the airflow path demonstration mechanism further comprises a first LED lamp on one side of the cylinder barrel, a second LED lamp is mounted on the other side of the cylinder barrel, and a flash lamp is mounted at the upper end of the shell of the engine.
Furthermore, an L-shaped support II is arranged at the center of the upper surface of the engine shell, a driving wheel III is arranged at one end of the L-shaped support II, a driving wheel IV is arranged at one end of the rotating shaft, and a driving belt is arranged between the driving wheel IV and the driving wheel III.
Furthermore, conical blocks II are arranged on the surfaces of three sides of the driving wheel.
Further, a second conical block corresponds to the position of the flash lamp, and corresponds to the position of the flash lamp; and a return spring is arranged between the support column and the sliding shaft.
The invention has the beneficial effects that: the piston engine can clearly know which stroke the current piston operation stage is in an intuitive mode, the operation of the piston engine is more stable through the transmission of the V-21274and the transmission of the shape connecting rod, the gas flow condition can be more clearly known to the student through the action of the airflow path demonstration mechanism, and the stress condition in the engine can be simulated through the action of the cylinder work demonstration mechanism.
Drawings
FIG. 1 is a schematic diagram of an engine operating condition demonstration device according to the present invention;
FIG. 2 is a schematic view of an airflow path demonstration mechanism;
FIG. 3 is a schematic view of a stroke progress demonstration mechanism;
FIG. 4 is a schematic top view of a stroke progress demonstration mechanism;
FIG. 5 is a schematic view of gear one;
FIG. 6 is a schematic view of gear two;
FIG. 7 is a partial schematic view of an airflow path demonstration mechanism;
FIG. 8 is a schematic view of an elliptical disk;
FIG. 9 is a schematic diagram of a cylinder work demonstration mechanism;
FIG. 10 is an enlarged schematic view of the hollow tube;
FIG. 11 is an enlarged schematic view of a first loop bar;
FIG. 12 is a cross-sectional schematic view of a piston block;
FIG. 13 is a schematic cross-sectional view of a slide frame;
FIG. 14 is a schematic top view of a rotating shaft;
in the figure, 1, an engine housing; 2. a cylinder barrel; 3. a first vertical bearing; 4. a rotating shaft; 5. a first transmission wheel; 6. a first horizontal bearing; 7. a crankshaft; 8. a motor base; 9. a rotating electric machine; 10. a second driving wheel; 11. a timing belt; 12. rotating the disc; 13. a fixed shaft; 14. a protection box; 15. a rectangular slideway; 16. a piston block; 17. a first connecting rod; 18. \ 21274and a shaped connecting rod; 19. a first rack; 20. a second rack; 21. an L-shaped fixing rod; 22. a rectangular chute; 23. a second horizontal bearing; 24. rotating the tube; 25. a first common bearing; 26. a second common bearing; 27. a first gear; 28. a second gear; 29. a triangular groove; 30. a pawl; 31. a V-shaped elastic sheet; 32. a third common bearing; 33. a third gear; 34. a clockwork spring; 35. a first pin shaft; 36. a fourth common bearing; 37. a fourth gear; 38. a label; 39. a hemispherical groove; 40. a support bar; 41. a hollow tube; 42. a slide bar; 43. a first compression spring; 44. an air inlet pipe; 45. an exhaust pipe; 46. an L-shaped bracket I; 47. a pneumatic impeller; 48. rotating the first wheel; 49. a support pillar; 50. a circular through hole; 51. a sliding shaft; 52. a second rotating wheel; 53. a contact switch; 54. an air valve; 55. a second compression spring; 56. a piston cylinder; 57. a loop bar I; 58. a loop bar II; 59. a rectangular groove; 60. a rectangular block; 61. a fourth compression spring; 62. a second pin shaft; 63. an L-shaped limiting groove; 64. a slide frame; 65. a compression spring V; 66. a cross bar; 67. a fifth common bearing; 68. an elliptical disk; 69. a driven wheel; 70. a driving wheel; 71. a connecting belt; 72. a balancing weight; 73. a viewing port; 74. a first LED lamp; 75. a second LED lamp; 76. a flash lamp; 77. an L-shaped bracket II; 78. a third driving wheel; 79. a fourth driving wheel; 80. a transmission belt; 81. a second conical block; 82. a first conical block; 83. a return spring; 84. a piston cylinder.
Detailed Description
The invention is described in detail with reference to the accompanying drawings, as shown in fig. 1-14, an engine running state demonstration device comprises an engine shell 1, a stroke progress demonstration mechanism is arranged on the side surface of the engine shell 1, an airflow path demonstration mechanism is arranged on the engine shell 1, and a cylinder work demonstration mechanism is arranged in the engine shell 1;
the stroke progress demonstration mechanism comprises a cylinder barrel 2 arranged at the center of the upper surface of an engine shell 1, vertical bearings 3 are arranged at two ends of the upper end of the engine shell 1, two pairs of vertical bearings 3 are arranged, a rotating shaft 4 is arranged on the inner ring of each vertical bearing 3, two rotating shafts 4 are arranged and are respectively positioned in the vertical bearings 3, a driving wheel 5 is arranged at one end of each rotating shaft 4, horizontal bearings 6 are arranged on two sides of the lower end of the engine shell 1, a crankshaft 7 is arranged on the inner ring of each horizontal bearing 6, two ends of each crankshaft 7 are fixedly connected with the corresponding horizontal bearing 6, a motor base 8 is arranged on the side surface of the engine shell 1, a rotating motor 9 is arranged in each motor base 8, the output end of each rotating motor 9 is fixedly connected with one end of the corresponding crankshaft 7, a driving wheel II 10 is arranged at the other end of the corresponding crankshaft 7, a timing belt 11 is arranged between the driving wheel II 10 and the driving wheel I5, and a rotating disc 12 is arranged at one end of the corresponding crankshaft 7, a fixed shaft 13 is arranged on the side surface of the rotating disc 12 close to the outer ring, and a protection box 14 is arranged on the side surface of the engine shell 1; a rectangular slideway 15 is arranged on the side surface of the protection box 14, a piston block 16 is arranged on one side of the rectangular slideway 15, a first connecting rod 17 is arranged at the lower end of the piston block 16, one end of the first connecting rod 17 is hinged with the piston block 16, the other end of the first connecting rod 17 is hinged with a fixed shaft 13, a v-21274is arranged at the upper end of the piston block 16, a v-shaped connecting rod 18, a v-21274is arranged at the lower end of the v-shaped connecting rod 18, a first rack 19 and a second rack 20 are arranged on one side of the upper end of the v-shaped connecting rod 18, a L-shaped fixed rod 21 is arranged on the two sides of the v-shaped connecting rod 18, the L-shaped fixed rod 21 is fixedly connected with the protection box 14, a rectangular chute 22 is arranged on the side surface of the v-shaped connecting rod 18, the rectangular chute 22 is fixedly connected with the L-shaped fixed rod 21, a second horizontal bearing 23 is arranged on the side surface of the protection box 14, a rotating pipe 24 is arranged on the inner ring of the horizontal bearing 23, one end of the rotating pipe 24 is fixedly connected with the horizontal bearing 23, a first common bearing 25 is arranged at the center of the rotating pipe 24, a common bearing II 26 is arranged on one side of a common bearing I25, a gear I27 meshed with the rack I19 is arranged on the outer surface of the common bearing I25, a gear II 28 meshed with the rack II 20 is arranged on the outer ring of the common bearing II 26, triangular grooves 29 are formed in the inner rings of the gear I27 and the gear II 28, a pawl 30 is arranged on the outer surface of the rotating pipe 24, the pawl 30 is provided with two rings, the pawl 30 is hinged with the rotating pipe 24, and a V-shaped elastic sheet 31 is arranged between the pawl 30 and the rotating pipe 24;
the stroke progress demonstration mechanism further comprises a third ordinary bearing 32 at one end of the rotating pipe 24, a third gear 33 is mounted on the outer ring of the third ordinary bearing 32, a clockwork spring 34 is mounted between the third gear 33 and the rotating pipe 24, a first pin shaft 35 is mounted on the side surface of the protection box 14, a fourth ordinary bearing 36 is mounted at one end of the first pin shaft 35, a fourth gear 37 is mounted on one side of the fourth ordinary bearing 36, the inner ring of the fourth gear 37 is meshed with the outer ring of the third gear 33, and a label 38 is mounted on the outer ring of the; the outer ring of the gear four 37 is provided with a hemispherical groove 39, the upper end of the protective box 14 is provided with a support rod 40, the lower end of the support rod 40 is provided with a hollow tube 41, a sliding rod 42 is arranged in the hollow tube 41, the sliding rod 42 is in sliding connection with the hollow tube 41, the sliding rod 42 corresponds to the hemispherical groove 39, and a first compression spring 43 is arranged between the sliding rod 42 and the hollow tube 41;
the airflow path demonstration mechanism comprises an air inlet pipe 44 at one end of the upper surface of the engine shell 1, and an air outlet pipe 45 is arranged at the other end of the upper surface of the engine shell 1; the upper ends of the air inlet pipe 44 and the air outlet pipe 45 are respectively provided with an L-shaped bracket 46, one end of the L-shaped bracket 46 is provided with a pneumatic impeller 47, the side surface of the pneumatic impeller 47 is provided with a rotating wheel 48, the rotating wheel 48 is fixedly connected with the pneumatic impeller 47, one side of the pneumatic impeller 47 is provided with a support column 49, the upper end of the support column 49 is provided with a circular through hole 50, a sliding shaft 51 is arranged in the circular through hole 50, the sliding shaft 51 is in sliding connection with the circular through hole 50, one end of the sliding shaft 51 is provided with a rotating wheel 52, the rotating wheel 52 corresponds to the position of the rotating wheel 48, the upper end of the support column 49 is provided with a contact switch 53, the two sides of the upper surface of the engine shell 1 are provided with circular through holes 50, an air valve 54 is arranged in the circular through hole 50, the upper end of the air valve 54 is provided with a compression spring 55, one end of the compression spring 55 is fixedly connected with the air valve 54, and the other end of the compression spring 55 is fixedly connected with the circular through hole 50, a pulley 56 is mounted to the upper end of the valve 54.
The cylinder working demonstration mechanism comprises a piston cylinder 84 on the inner surface of a cylinder barrel 2, a first loop bar 57 is installed at the lower end of the piston cylinder 84, the first loop bar 57 is hinged with the piston cylinder 84, a second loop bar 58 is installed at the center of a crankshaft 7, the second loop bar 58 is hinged with the crankshaft 7, the first loop bar 57 is connected with the second loop bar 58 in a sleeved mode, a rectangular groove 59 is formed in the side surface of the first loop bar 57, a rectangular block 60 is installed at the upper end of the second loop bar 58, a fourth compression spring 61 is installed between the first loop bar 57 and the second loop bar 58, a second pin shaft 62 is installed on the side surface of the second loop bar 58, an L-shaped limiting groove 63 is installed on the side surface of the cylinder barrel 2, a sliding frame 64 is installed on one side of the L-shaped limiting groove 63, a fifth compression spring 65 is installed between the upper end of the sliding frame 64 and an engine shell 1, a cross bar 66 is installed at the lower end of the sliding frame 64, a fifth ordinary bearing 67 is installed on the side surface of the cylinder barrel 2, an elliptical disc 68 is installed on the inner circle of the ordinary bearing 67, the elliptical disc 68 is connected with the upper end of the sliding frame 64 in a sliding manner, a driven wheel 69 is arranged in the center of the elliptical disc 68, one end of the rotating shaft 4 is provided with a driving wheel 70, one driving wheel 70 is arranged, and a connecting belt 71 is arranged between the driving wheel 70 and the driven wheel 69.
One side of the crankshaft 7 is provided with a balancing weight 72, and one end of the rotating shaft 4 is provided with a first conical block 82.
The protective case 14 has a viewing port 73 formed in a side surface thereof.
The airflow path demonstration mechanism further comprises a first LED lamp 74 arranged on one side of the cylinder barrel 2, a second LED lamp 75 arranged on the other side of the cylinder barrel 2, and a flashlight 76 arranged at the upper end of the engine shell 1, so that a person can conveniently observe the flowing condition of the air through the prompting of a luminous source.
An L-shaped bracket II 77 is arranged at the center of the upper surface of the engine shell 1, a driving wheel III 78 is arranged at one end of the L-shaped bracket II 77, a driving wheel IV 79 is arranged at one end of the rotating shaft 4, and a driving belt 80 is arranged between the driving wheel IV 79 and the driving wheel III 78.
The side surface of the driving wheel III 78 is provided with a conical block II 81.
The second conical block 81 corresponds to the position of the flashlight 76, and the second conical block 81 corresponds to the position of the flashlight 76; a return spring 83 is installed between the support column 49 and the slide shaft 51.
In the embodiment, an electric appliance of the device is controlled by an external controller, when demonstration is needed, the controller controls a rotating motor 9 to rotate, the rotating motor 9 directly drives a crankshaft 7 to rotate, one end of the crankshaft 7 drives a rotating disc 12 to rotate, the rotating disc 12 rotates to enable a fixed shaft 13 to do circular motion by taking a horizontal bearing I6 as a center, the fixed shaft 13 moves to drive a piston block 16 to move up and down through a connecting rod I17, the piston block 16 moves to drive a Y-shaped connecting rod 18 to move up and down, when the Y-shaped connecting rod 18 moves up, a gear I27 rotates clockwise, a gear II 28 rotates counterclockwise, at the moment, under the action of a pawl 30 and a triangular groove 29, the gear I27 rotates clockwise to drive a rotating pipe 24 to rotate clockwise, and the gear II 28 does not transmit to the rotating pipe 24; when the v-21274; the shape connecting rod 18 moves downwards, the first gear 27 rotates anticlockwise, the second gear 28 rotates clockwise, under the action of the pawl 30 and the triangular groove 29, the second gear 28 rotates clockwise to drive the rotating pipe 24 to rotate clockwise, the first gear 27 does not transmit to the rotating pipe 24, the rotating pipe 24 intermittently rotates clockwise through the continuous motion of the piston block 16, the rotation of the rotating pipe 24 drives the third gear 33 to rotate, the rotation of the third gear 33 directly drives the fourth gear 37 to rotate, the rotation of the fourth gear 37 drives the label 38 to be replaced in sequence, and characters are coated on the outer surface of the label 38 to respectively perform air inlet, compression, work application and exhaust; the third gear 33 can rotate after accumulating certain kinetic energy through the action of the first clockwork spring 34, the sliding rod 43 can be tightly attached to the hemispherical groove 39 through the action of the first compression spring 43, and the fourth gear 37 is in a stable state; by controlling the transmission efficiency of the rotating disc 12 to the gear four 37, the piston block 16 can move from the lowest end to the highest end, and the gear four 37 rotates ninety degrees; by observing through the observation port 73, it can be clearly observed which stroke stage the piston is in;
during the intake stroke, the downward movement of the piston cylinder 84 enables one side of the air inlet pipe 44 to generate air pressure, air flow enters the cylinder barrel 2 through the air inlet pipe 44, the air flow generated in the process pushes the air impeller 47 to rotate, the rotation of the air impeller 47 directly drives the first rotating wheel 48 to rotate, by utilizing the structure of the first rotating wheel 48 and the second rotating wheel 52, the first rotating wheel 48 pushes the second rotating wheel 52 to move to one side for a certain distance during rotation, and the first rotating wheel 52 will contact the contact switch 53 after moving for a certain distance, so that the first led lamp 74 is lightened, the second rotating wheel 52 can be always close to the first rotating wheel 48 through the action of the return spring 83, and the principle is the same as that during the exhaust stroke;
the rotation of the crankshaft 7 drives the first transmission wheel 5 to rotate through the second transmission wheel 10 and the timing belt 11, the rotation of the first transmission wheel 5 directly drives the rotating shaft 4 to rotate, the rotation of the rotating shaft 4 drives the first conical block 82 to rotate, and when the end point of the first conical block 82 contacts the pulley 56, the first conical block 82 presses the pulley 56, so that the valve 54 slides downwards and a corresponding air passage is opened; the rotation of the rotating shaft 4 drives the driving wheel IV 79 to rotate, the driving wheel IV 79 drives the driving wheel III 78 to rotate through the driving belt 80, the driving wheel III 78 drives one end of the conical block II 81 to be in contact with a switch of the flash lamp 76, and therefore the flash lamp 76 is lightened in a power stroke, and observation of a college is facilitated; the rotation of the rotating shaft 4 simultaneously drives the driving wheel 70 to rotate, the rotation of the driving wheel 70 drives the driven wheel 69 to rotate through the connecting belt 71, the driven wheel 69 drives the elliptical disc 68 to rotate, due to the shape of the elliptical disc 68, the elliptical disc 68 rotates to enable the sliding frame 64 to move up and down, the sliding frame 64 can stably slide through the effect of the L-shaped limiting groove 63, when the elliptical disc 68 rotates to a certain degree, for example, as shown in FIG. 8, the sliding frame 64 loses the support of the elliptical disc 68, the sliding frame 64 rapidly slides downwards through the support of the compression spring five 65, the sliding of the sliding frame 64 drives the pin shaft two 62 to slide downwards, the sleeve rod one 57 and the sleeve rod two 58 are compressed for a short time, and the piston cylinder 84 can clearly know that the piston cylinder 84 is doing work at the moment through naked eye observation; the first loop bar 57 and the second loop bar 58 can be in a normal state through the action of the four compression springs 61, and the friction force between the piston cylinder 84 and the cylinder barrel 2 is smaller than the elastic force generated by the four compression springs 61.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (7)
1. An engine running state demonstration device comprises an engine shell (1), and is characterized in that a stroke progress demonstration mechanism is arranged on the side surface of the engine shell (1), an airflow path demonstration mechanism is placed on the engine shell (1), and a cylinder work-doing demonstration mechanism is arranged in the engine shell (1);
the stroke progress demonstration mechanism comprises a cylinder barrel (2) arranged at the center of the upper surface of an engine shell (1), two pairs of vertical bearings (3) are arranged at two ends of the upper end of the engine shell (1), a rotating shaft (4) is arranged on the inner ring of each vertical bearing (3), two rotating shafts (4) are arranged and are respectively positioned in the vertical bearings (3), a driving wheel I (5) is arranged at one end of each rotating shaft (4), horizontal bearings (6) are arranged on two sides of the lower end of the engine shell (1), a crankshaft (7) is arranged on the inner ring of each horizontal bearing (6), two ends of each crankshaft (7) are fixedly connected with the corresponding horizontal bearing (6), a motor base (8) is arranged on the side surface of the engine shell (1), a rotating motor (9) is arranged in each motor base (8), and the output end of each rotating motor (9) is fixedly connected with one end of the corresponding crankshaft (7), a second driving wheel (10) is mounted at the other end of the crankshaft (7), a timing belt (11) is mounted between the second driving wheel (10) and the first driving wheel (5), a rotating disc (12) is mounted at one end of the crankshaft (7), a fixed shaft (13) is mounted on the side surface of the rotating disc (12) close to the outer ring, and a protection box (14) is mounted on the side surface of the engine shell (1); a rectangular slideway (15) is arranged on the side surface of the protection box (14), a piston block (16) is arranged on one side of the rectangular slideway (15), a first connecting rod (17) is arranged at the lower end of the piston block (16), one end of the first connecting rod (17) is hinged with the piston block (16), the other end of the first connecting rod (17) is hinged with the fixed shaft (13), a first rack (19) is arranged on one side of the upper end of the first connecting rod (18), a second rack (20) and a second rack (21274) are arranged on one side of the upper end of the connecting rod (18), an L-shaped fixing rod (21) is arranged on two sides of the connecting rod (18), the L-shaped fixing rod (21) is fixedly connected with the protection box (14), a rectangular chute (22) is arranged on the side surface of the connecting rod (18), the rectangular chute (22) is fixedly connected with the L-shaped fixing rod (21), and a horizontal bearing (23) is arranged on the side surface of the protection box (14), a rotating pipe (24) is installed on the inner ring of the second horizontal bearing (23), one end of the rotating pipe (24) is fixedly connected with the second horizontal bearing (23), a first common bearing (25) is installed at the center of the rotating pipe (24), a second common bearing (26) is installed on one side of the first common bearing (25), a first gear (27) meshed with the first rack (19) is installed on the outer surface of the first common bearing (25), a second gear (28) meshed with the second rack (20) is installed on the outer ring of the second common bearing (26), triangular grooves (29) are formed in the inner rings of the first gear (27) and the second gear (28), a pawl (30) is installed on the outer surface of the rotating pipe (24), the pawl (30) is provided with two rings, the pawl (30) is hinged to the rotating pipe (24), and a V-shaped elastic sheet (31) is installed between the pawl (30) and the rotating pipe (24);
the stroke progress demonstration mechanism further comprises a third ordinary bearing (32) at one end of the rotating pipe (24), a third gear (33) is mounted on the outer ring of the third ordinary bearing (32), a clockwork spring (34) is mounted between the third gear (33) and the rotating pipe (24), a first pin shaft (35) is mounted on the side surface of the protection box (14), a fourth ordinary bearing (36) is mounted at one end of the first pin shaft (35), a fourth gear (37) is mounted on one side of the fourth ordinary bearing (36), the inner ring of the fourth gear (37) is meshed with the outer ring of the third gear (33), and a label (38) is mounted on the outer ring of the fourth gear (37); a hemispherical groove (39) is formed in the outer ring of the gear IV (37), a support rod (40) is installed at the upper end of the protection box (14), a hollow tube (41) is installed at the lower end of the support rod (40), a sliding rod (42) is installed in the hollow tube (41), the sliding rod (42) is connected with the hollow tube (41) in a sliding mode, the sliding rod (42) corresponds to the hemispherical groove (39), and a first compression spring (43) is installed between the sliding rod (42) and the hollow tube (41);
the airflow path demonstration mechanism comprises an air inlet pipe (44) at one end of the upper surface of the engine shell (1), and an air outlet pipe (45) is mounted at the other end of the upper surface of the engine shell (1); the upper ends of the air inlet pipe (44) and the exhaust pipe (45) are respectively provided with a first L-shaped support (46), one end of the first L-shaped support (46) is provided with a pneumatic impeller (47), the side surface of the pneumatic impeller (47) is provided with a first rotating wheel (48), the first rotating wheel (48) is fixedly connected with the pneumatic impeller (47), one side of the pneumatic impeller (47) is provided with a support column (49), the upper end of the support column (49) is provided with a circular through hole (50), a sliding shaft (51) is arranged in the circular through hole (50), the sliding shaft (51) is in sliding connection with the circular through hole (50), one end of the sliding shaft (51) is provided with a second rotating wheel (52), the second rotating wheel (52) corresponds to the first rotating wheel (48), the upper end of the support column (49) is provided with a contact switch (53), the two sides of the upper surface of the engine shell (1), a second compression spring (55) is mounted at the upper end of the valve (54), one end of the second compression spring (55) is fixedly connected with the valve (54), the other end of the second compression spring (55) is fixedly connected with the circular through hole (50), and a pulley (56) is mounted at the upper end of the valve (54); the cylinder work-doing demonstration mechanism comprises a piston cylinder (84) on the inner surface of a cylinder barrel (2), a loop bar I (57) is installed at the lower end of the piston cylinder (84), the loop bar I (57) is hinged with the piston cylinder (84), a loop bar II (58) is installed at the center of a crankshaft (7), the loop bar II (58) is hinged with the crankshaft (7), the loop bar I (57) is connected with the loop bar II (58) in a sleeved mode, a rectangular groove (59) is formed in the side surface of the loop bar I (57), a rectangular block (60) is installed at the upper end of the loop bar II (58), a compression spring IV (61) is installed between the loop bar I (57) and the loop bar II (58), a pin shaft II (62) is installed on the side surface of the loop bar II (58), an L-shaped limiting groove (63) is installed on the side surface of the cylinder barrel (2), a sliding frame (64) is installed on one side of the L-shaped limiting groove (63), and a compression spring V (65) is installed between the upper end of the sliding frame (64) and an engine shell (1), horizontal pole (66) are installed to sliding frame (64) lower extreme, cylinder (2) side surface mounting has five (67) of ordinary bearing, oval dish (68) are installed to five (67) inner circles of ordinary bearing, on oval dish (68) with sliding frame (64) upper end sliding connection, oval dish (68) center department installs from driving wheel (69), action wheel (70) are installed to axis of rotation (4) one end, action wheel (70) are equipped with one, install connecting band (71) between action wheel (70) and follow driving wheel (69).
2. The engine operation state demonstration device as claimed in claim 1, wherein a weight block (72) is installed at one side of the crankshaft (7), and a first conical block (82) is installed at one end of the rotating shaft (4).
3. The engine operation state demonstration device according to claim 1, wherein a viewing port (73) is opened in a side surface of the protective case (14).
4. The engine operation state demonstration device according to claim 1, wherein the air flow path demonstration mechanism further comprises a first led lamp (74) arranged on one side of the cylinder (2), a second led lamp (75) arranged on the other side of the cylinder (2), and a flashlight (76) arranged at the upper end of the engine housing (1).
5. The demonstration device for the running state of the engine according to claim 1, wherein a second L-shaped bracket (77) is installed at the center of the upper surface of the engine shell (1), a third transmission wheel (78) is installed at one end of the second L-shaped bracket (77), a fourth transmission wheel (79) is installed at one end of the rotating shaft (4), and a transmission belt (80) is installed between the fourth transmission wheel (79) and the third transmission wheel (78).
6. The engine operation state demonstration device as claimed in claim 1, wherein the side surface of the driving wheel III (78) is provided with a conical block II (81).
7. The engine operation state demonstration device according to claim 1, wherein the second conical block (81) corresponds to the position of the flashlight (76); a return spring (83) is arranged between the supporting column (49) and the sliding shaft (51).
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Effective date of registration: 20221223 Address after: No.9, Zhengyang Road, Xin'an Town, Zhengding County, Shijiazhuang, Hebei 050,899 Patentee after: Hebei Zhengkeda Education Technology Co.,Ltd. Address before: 057650 Business Incubation Center 200m West Kunshan Road, Shengying Town, Guangping County, Handan City, Hebei Province Patentee before: BEIJING ZHI YANG NORTH INTERNAITONAL EDUCATION TECHNOLOGY Co.,Ltd. |