CN217982657U

CN217982657U - Gear transmission device

Info

Publication number: CN217982657U
Application number: CN202222197792.9U
Authority: CN
Inventors: 傅士伟; 李定华; 乐旭东; 刘建华; 夏波
Original assignee: Zhoushan Technician College
Current assignee: Zhoushan Technician College
Priority date: 2022-08-19
Filing date: 2022-08-19
Publication date: 2022-12-06
Anticipated expiration: 2032-08-19

Abstract

The utility model discloses a gear transmission device, including bottom plate, first pivot, second pivot, vertical guide slot, third pivot, backup pad, fourth pivot. The first rotating shaft is horizontally erected on the bottom plate, and a first straight gear and a first bevel gear are coaxially arranged on the first rotating shaft; the second rotating shaft is horizontally erected on the bottom plate, and a sector gear and a second straight gear are coaxially arranged on the second rotating shaft; the vertical guide groove is vertically arranged on the bottom plate, and a rack is arranged in the groove in a sliding manner; the third rotating shaft is horizontally erected on the bottom plate, and two ends of the third rotating shaft are respectively and coaxially provided with a second bevel gear and a third bevel gear; the supporting plate is erected on the bottom plate through the upright post, and the upper end face of the supporting plate is provided with a gear transmission mechanism; the fourth rotating shaft is vertically and rotatably arranged on the bottom plate, the upper end of the fourth rotating shaft is in transmission connection with the gear transmission mechanism, and the middle of the fourth rotating shaft is coaxially provided with a fourth bevel gear. The utility model discloses a demonstration in kind lets the student directly perceivedly see the driven process of gear engagement, has deepened student's memory, impression to the knowledge point.

Description

Gear transmission device

Technical Field

The utility model relates to a gear drive technical field specifically is a gear drive.

Background

The gear transmission is a device for transmitting motion and power by a gear pair, is a mechanical transmission mode which is most widely applied in various modern equipment, and relies on the meshing between adjacent gears. In the teaching field, the course explanation of gear engagement is relatively abstract, and when a teacher explains the course of gear engagement, a video demonstration or animation simulation mode is mainly adopted.

However, the above method has the following defects: lack of demonstration objects, difficult to generate visual impression for students, and difficult to generate memory points.

SUMMERY OF THE UTILITY MODEL

The utility model provides a gear transmission device to solve the technical problem who mentions in the background art.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a gear transmission device comprises a bottom plate, a first rotating shaft, a second rotating shaft, a vertical guide groove, a third rotating shaft, a supporting plate and a fourth rotating shaft.

The first rotating shaft is horizontally erected on the bottom plate, and a first straight gear and a first bevel gear are coaxially arranged on the first rotating shaft;

the second rotating shaft is horizontally erected on the bottom plate and is parallel to the first rotating shaft, and a sector gear and a second straight gear meshed with the first straight gear are coaxially arranged on the second rotating shaft;

the vertical guide groove is vertically arranged on the bottom plate, a rack which is intermittently meshed with the sector gear is arranged in the groove in a sliding mode, and a return spring is connected between the upper end of the rack and the top end of the vertical guide groove;

the third rotating shaft is horizontally erected on the bottom plate and is vertical to the first rotating shaft, a second bevel gear and a third bevel gear are coaxially arranged at two ends of the third rotating shaft respectively, and the second bevel gear is meshed with the first bevel gear;

the supporting plate is erected on the bottom plate through the upright post, and a gear transmission mechanism is arranged on the upper end face of the supporting plate;

the fourth rotating shaft is vertically and rotatably arranged on the bottom plate and is positioned below the supporting plate, the upper end of the fourth rotating shaft is in transmission connection with the gear transmission mechanism, and the middle part of the fourth rotating shaft is coaxially provided with a fourth bevel gear meshed with the third bevel gear.

Furthermore, a guide rod penetrating through the top end of the vertical guide groove is arranged at the upper end of the rack, and the guide rod body penetrates through a center hole of the return spring.

Furthermore, the gear transmission device also comprises a driving mechanism for driving the first rotating shaft to rotate, and the driving mechanism comprises a horizontal guide rail, a sliding plate, a driving motor, a driving gear and a driven gear;

the horizontal guide rail is horizontally arranged on the bottom plate and is guided to be vertical to the first rotating shaft;

the sliding plate is arranged on the horizontal guide rail in a sliding manner through the guide rail clamp;

the driving motor is arranged on the sliding plate;

the driving gear is arranged at the driving end of the driving motor;

the driven gear is coaxially arranged on the first rotating shaft and can be meshed with the driving gear.

Furthermore, the gear transmission device further comprises a rocking handle arranged at one end of the first rotating shaft.

Further, the gear transmission mechanism comprises a central gear, an outer edge gear and an inner gear ring;

the central gear is rotatably arranged on the supporting plate and is connected with the upper end of the fourth rotating shaft;

the outer edge gears are provided with a plurality of groups, are rotatably arranged on the supporting plate and are meshed with the central gear;

the inner gear ring is rotatably arranged on the support plate through the rotary support assembly and is concentric with the central gear, and the inner gear ring is meshed with the plurality of groups of outer edge gears.

Furthermore, the rotary supporting component comprises a circular sliding rail arranged on the supporting plate and a plurality of groups of arc-shaped sliding blocks which are symmetrically arranged on the lower end face of the peripheral gear and are in sliding connection with the circular sliding rail, and the circular sliding rail is concentric with the central gear.

The utility model has the advantages that:

the utility model discloses simple structure has fully demonstrated the transmission between gear and gear, gear and rack, through the demonstration in kind, lets the student see the driven process of gear engagement directly perceivedly, has deepened memory, the impression of student to the knowledge point, and a plurality of bevel gears that set up can change the transmission of gear reverse, has richened the driven study knowledge point of gear engagement.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a first perspective view of the present invention.

Fig. 2 is a perspective view of the second viewing angle of the present invention.

1. The device comprises a base plate, 2, a first rotating shaft, 3, a first straight gear, 4, a first bevel gear, 5, a second rotating shaft, 6, a sector gear, 7, a second straight gear, 8, a vertical guide groove, 9, a rack, 10, a return spring, 11, a third rotating shaft, 12, a second bevel gear, 13, a third bevel gear, 14, a support plate, 15, a stand column, 16, a fourth rotating shaft, 17, a fourth bevel gear, 18, a guide rod, 19, a horizontal guide rail, 20, a sliding plate, 21, a guide rail clamp, 22, a driving motor, 23, a driving gear, 24, a driven gear, 25, a rocking handle, 26, a central gear, 27, outer edge teeth, 28, an inner gear ring, 29, a circular sliding rail, 30, an arc-shaped sliding block, 31 and a bearing seat;

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in fig. 1-2, the present invention provides a gear transmission device, which comprises a bottom plate 1, a first rotating shaft 2, a second rotating shaft 5, a vertical guide groove 8, a third rotating shaft 11, a supporting plate 14, and a fourth rotating shaft 16. The first rotating shaft 2 is horizontally erected on the bottom plate 1, and a first straight gear 3 and a first bevel gear 4 are coaxially arranged on the first rotating shaft 2; the second rotating shaft 5 is horizontally erected on the bottom plate 1 and is parallel to the first rotating shaft 2, and a sector gear 6 and a second straight gear 7 meshed with the first straight gear 3 are coaxially arranged on the second rotating shaft 5; the vertical guide groove 8 is vertically arranged on the bottom plate 1, a rack 9 which is intermittently meshed with the sector gear 6 is arranged in the groove in a sliding manner, a return spring 10 is connected between the upper end of the rack 9 and the top end of the vertical guide groove 8, along with the forward rotation and the reverse rotation of the sector gear 6, the rack 9 not only moves upwards but also moves downwards in the groove of the vertical guide groove 8, in order to prevent the limited stroke when the rack 9 moves downwards and is blocked by the bottom plate 1, a vertical notch corresponding to the inner groove of the vertical guide groove 8 is formed in the bottom plate 1, so that the rack 9 conveniently moves downwards to penetrate through the bottom plate 1, the return spring 10 is arranged, the pushing force and the pulling force can be respectively generated on the vertical movement of the rack 9, therefore, when the sector gear 6 rotates to enable the tooth part of the sector gear not to be meshed with the rack 9, the return spring 10 can enable the rack 9 to return to the original position along the direction, in addition, a guide rod 18 which penetrates through the top end of the vertical guide groove 8 is arranged at the upper end of the rack 9, and a body of the guide rod 18 penetrates through a center hole of the return spring 10, and the guide rod 18 can provide stable guide for the telescopic deformation of the return spring 10; the third rotating shaft 11 is horizontally erected on the bottom plate 1 and is vertical to the first rotating shaft 2, a second bevel gear 12 and a third bevel gear 13 are respectively coaxially arranged at two ends of the third rotating shaft, and the second bevel gear 12 is meshed with the first bevel gear 4; the supporting plate 14 is erected on the bottom plate 1 through the upright post 15, and the upper end face of the supporting plate 14 is provided with a gear transmission mechanism; the fourth rotating shaft 16 is vertically and rotatably arranged on the bottom plate 1 through a bearing seat 31, is positioned below the supporting plate 14, is in transmission connection with a gear transmission mechanism at the upper end thereof, and is coaxially provided with a fourth bevel gear 17 meshed with the third bevel gear 13 at the middle part thereof.

When the first rotating shaft 2 is driven to rotate by external force, the first straight gear 3 drives the second straight gear 7 to rotate, and the first bevel gear 4 drives the second bevel gear 12 to rotate;

when the second straight gear 7 rotates, the second rotating shaft 5 drives the sector gear 6 to rotate, the sector gear 6 rotates to be intermittently meshed with the rack 9, when the tooth part of the sector gear 6 is meshed with the rack 9, the rack 9 is driven to move along the vertical guide groove 8 in a guiding manner, when the tooth part of the sector gear 6 is not meshed with the rack 9, the reset spring 10 can enable the rack 9 to return to the original position along the vertical guide groove 8 in a guiding manner, and the rack 9 continuously reciprocates in the vertical direction along with the continuous rotation of the sector gear 6;

when the second bevel gear 12 rotates, the third bevel gear 13 is driven to rotate by the third rotating shaft 11, the third bevel gear 13 drives the fourth rotating shaft 16 to rotate by the fourth bevel gear 17 engaged with the third bevel gear, and when the fourth rotating shaft 16 rotates, the gear transmission mechanism generates gear motion.

Can know through the above description, this application has fully demonstrated the transmission between gear and gear, gear and rack, through the demonstration in kind, lets the student directly perceivedly see the driven process of gear engagement, has deepened memory, the impression of student to knowledge point, and a plurality of bevel gears that set up can change the transmission of gear and reverse, has richened the driven study knowledge point of gear engagement.

In this embodiment, the first shaft 2 is driven to rotate by external force in two ways, the first is driven by a driving mechanism, and the second is driven to rotate by a rocking handle 25 provided at one end of the first shaft 2. The driving mechanism comprises a horizontal guide rail 19, a sliding plate 20, a driving motor 22, a driving gear 23 and a driven gear 24. Horizontal guide rail 19 level setting is perpendicular with first pivot 2 on bottom plate 1 and direction, and slide 20 passes through guide rail clamp 21 and slides and set up on horizontal guide rail 19, and driving motor 22 sets up on slide 20, and driving gear 23 sets up the drive end at driving motor 22, and driven gear 24 coaxial setting is in first pivot 2, and can mesh with driving gear 23. Therefore, when the driving mechanism is selected for driving, firstly, the driving gear 23 and the driven gear 24 are ensured to be in an engaged state, and then the driving gear 23 is driven by the driving motor 22, so that the driven gear 24 drives the first rotating shaft 2 to rotate; if the first shaft 2 is driven to rotate by the rotary rocking handle 25, in order to prevent the first shaft 2 from driving the driven gear 24, the driven gear 24 rotates the driving end of the driving motor 22 through the driving gear 23 in the working state, the limit of the guide rail clamp 21 is released, the sliding plate 20 is moved to make the driving motor 22 drive the driving gear 23 to be away from the driven gear 24, after the driving gear 23 is disengaged from the driven gear 24, the position locking function of the guide rail clamp 21 on the horizontal guide rail 19 is used again to keep the position of the sliding plate 20 fixed, and then the rotary rocking handle 25 drives the first shaft 2 to rotate. Through the two external forces, the first rotating shaft 2 is driven to rotate, so that the learning operation modes of students are increased, and the learning knowledge points of the students are enriched. The rail clamp 21 has a function of locking the position of the horizontal rail 19, and is available as it is by a known technique.

In the present embodiment, the gear transmission mechanism includes a sun gear 26, a peripheral gear 27, and an internal gear 28. The central gear 26 is rotatably disposed on the support plate 14 and connected to the upper end of the fourth rotating shaft 16, the outer edge gears 27 are rotatably disposed on the support plate 14 and engaged with the central gear 26, the outer edge gears 27 are centrally symmetrically distributed on the periphery of the central gear 26, the inner gear ring 28 is rotatably disposed on the support plate 14 through the rotary support assembly and concentric with the central gear 26, and the inner gear ring 28 is engaged with the outer edge gears 27. The rotary supporting assembly comprises a circular sliding rail 29 arranged on the supporting plate 14 and a plurality of groups of arc-shaped sliding blocks 30 symmetrically arranged on the lower end face of the outer edge gear 27 and connected with the circular sliding rail 29 in a sliding manner, and the circular sliding rail 29 is concentric with the central gear 26. When the fourth rotating shaft 16 rotates, the central gear 26 rotates along with the rotation, the central gear 26 drives the plurality of sets of outer edge gears 27 to rotate, and the plurality of sets of outer edge gears 27 drive the inner gear ring 28 to rotate under the rotation support of the rotation support assembly. The gear transmission mechanism simulates typical planetary gear transmission, not only brings visual feeling to students and deepens memory, but also enriches learning knowledge points of the students.

The above-described embodiments of the present invention should not be construed as limiting the scope of the present invention, and any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A gear assembly, comprising:

a base plate (1);

the first rotating shaft (2) is horizontally erected on the bottom plate (1), and a first straight gear (3) and a first bevel gear (4) are coaxially arranged on the first rotating shaft (2);

the second rotating shaft (5) is horizontally erected on the bottom plate (1) and is parallel to the first rotating shaft (2), and a sector gear (6) and a second straight gear (7) meshed with the first straight gear (3) are coaxially arranged on the second rotating shaft (5);

the vertical guide groove (8) is vertically arranged on the bottom plate (1), a rack (9) intermittently meshed with the sector gear (6) is arranged in the groove in a sliding mode, and a return spring (10) is connected between the upper end of the rack (9) and the top end of the vertical guide groove (8);

the third rotating shaft (11) is horizontally erected on the bottom plate (1) and is perpendicular to the first rotating shaft (2), a second bevel gear (12) and a third bevel gear (13) are respectively and coaxially arranged at two ends of the third rotating shaft, and the second bevel gear (12) is meshed with the first bevel gear (4);

the supporting plate (14) is erected on the bottom plate (1) through an upright post (15), and a gear transmission mechanism is arranged on the upper end face of the supporting plate (14);

and the fourth rotating shaft (16) is vertically and rotatably arranged on the bottom plate (1) and is positioned below the supporting plate (14), the upper end of the fourth rotating shaft is in transmission connection with the gear transmission mechanism, and the middle part of the fourth rotating shaft is coaxially provided with a fourth bevel gear (17) meshed with the third bevel gear (13).

2. The gear assembly of claim 1, wherein: and a guide rod (18) penetrating through the top end of the vertical guide groove (8) is arranged at the upper end of the rack (9), and the body of the guide rod (18) penetrates through a central hole of the return spring (10).

3. The gear assembly of claim 1, wherein: also comprises a driving mechanism for driving the first rotating shaft (2) to rotate, and the driving mechanism comprises:

the horizontal guide rail (19) is horizontally arranged on the bottom plate (1) and is guided to be vertical to the first rotating shaft (2);

a slide plate (20) which is slidably provided on the horizontal guide rail (19) by a guide rail clamp (21);

a driving motor (22) provided on the slide plate (20);

a driving gear (23) arranged at the driving end of the driving motor (22);

and the driven gear (24) is coaxially arranged on the first rotating shaft (2) and can be meshed with the driving gear (23).

4. The gear assembly of claim 1, wherein: the device also comprises a rocking handle (25) arranged at one end of the first rotating shaft (2).

5. The gear assembly of claim 1, wherein: the gear transmission mechanism includes:

a central gear (26) which is rotatably arranged on the support plate (14) and is connected with the upper end of the fourth rotating shaft (16);

a plurality of groups of outer edge gears (27) which are rotatably arranged on the support plate (14) and are meshed with the central gear (26);

and the inner gear ring (28) is rotationally arranged on the support plate (14) through the rotary support component and is concentric with the central gear (26), and the inner gear ring (28) is meshed with the multiple groups of the outer edge gears (27).

6. The gear assembly of claim 5, wherein: the rotary supporting component comprises a circular sliding rail (29) arranged on the supporting plate (14) and a plurality of groups of arc-shaped sliding blocks (30) which are symmetrically arranged on the lower end face of the outer edge gear (27) and are in sliding connection with the circular sliding rail (29), and the circular sliding rail (29) is concentric with the central gear (26).