CN208169446U - A kind of novel variable speed system - Google Patents

Abstract

The utility model provides a novel speed change system, which comprises a driving shaft and a driven shaft, a shift gear arranged on the driving shaft, a shift driven gear arranged on the driven shaft, and a gear driven gear arranged on the driving shaft. The shifting teeth, the shifting teeth can slide along the drive shaft under the action of external force, the shifting teeth move towards and approach the gear gear, and the shifting teeth drive the shifting gear to rotate. The gear is disengaged. The utility model has the ability to solve the problems that the current agricultural machinery runs at a low speed and cannot be used in a higher gear, resulting in serious wear and tear of the lower gear, easy damage and high farming costs.

Description

A new type of transmission system

technical field

The invention relates to the technical field of transmission in the field of mechanical equipment, in particular to a novel speed change system.

Background technique

As we all know, there are two types of transmissions commonly used in the market today, one is the traditional manual transmission and the other is the continuously variable transmission. Most of the continuously variable transmissions are used in small cars, and most of the traditional manual transmissions are It is used in large vehicles or agricultural vehicles mainly because of the large load capacity of large vehicles or agricultural vehicles.

Generally, when the road conditions permit, the driver starts with a low gear, and after running to a certain speed, with the help of the inertia of the vehicle, depresses the clutch and changes to a high gear. The high gear is when the wheels have a certain initial speed. Only after working again can you go faster and faster. When the tractor has a heavy load, it is impossible to start directly with a high gear.

Agricultural machinery and vehicles also have multiple gears. The low gear is used for starting, and the high gear is used during operation to save fuel consumption and increase speed.

Those skilled in the art are well aware of the plowing steps of agricultural machinery cultivation. The front of the agricultural tractor is pulled at a low speed, and the rear plow turns the soil over. This process requires a lot of traction, and all of them are pulled at a low speed.

After communicating with the driver, it is not that the driver does not want to change to a higher gear and accelerate lower, but because the plow hanging behind the tractor is inserted into the soil by 30-50 cm, the tractor is subjected to a very large resistance, most of the tractors are With manual transmission, the clutch needs to be used to change gears. When the driver steps on the clutch, the engine stops power output to the drive shaft. The vehicle does not continue to slide forward under the action of inertia as expected, but is directly driven by the tractor. The friction between the plow and the ground prevents the vehicle from moving forward. When the clutch is stepped on, the vehicle stops moving forward. At this moment, when the gear is changed to a high gear, it is difficult for the tractor to start. As a result, the current situation is that the tractor is plowing the land for a long time. Always use the first gear or the resistance position to work continuously, the low gear has high fatigue strength, and the vehicle is severely worn and damaged.

Of course, there are also agricultural machines without gearboxes. After field investigation, agricultural tractors equipped with inorganic gearboxes are not able to run as fast as on roads with good road conditions. Working in low gears, vehicles with continuously variable transmissions also have the problems of high fuel consumption, severe wear and tear in low gears, and short service life. From the perspective of cost, the cost of manual gears and farming costs are higher.

Contents of the invention

The technical problem to be solved by the present invention is to provide a new type of transmission system for the shortcomings of the existing technology. The gears are severely worn, easily damaged, and the cost of farming is high.

The gear shifting mode of this transmission system is completely different from the traditional gear shifting. The traditional gear shifting is to ensure that the two gears are relatively stationary, and then use the shift fork to mesh the gears of different sizes to achieve different transmission ratios. Speed change, however, the driving shaft gear and the driven shaft gear in the gearbox are always in contact, and the speed adjustment is achieved without changing the transmission ratio between the gears, but by using the combination of the dial with helical teeth and the gear gears of different sizes , to achieve variable speed.

The technical solution of the present invention is to provide the following novel speed change system, comprising a driving shaft and a driven shaft, a gear gear provided on the driving shaft, a gear driven gear provided on the driven shaft, the driving The shaft is also provided with shifting teeth, which can slide along the drive shaft under the action of external force. The high-speed rotating gear is disengaged.

Further optimization of the technical scheme, the gear driven gear matched with the gear gear is always in meshing state. This technical solution is different from the prior art, and solves the phenomenon of tooth beating in the meshing process of the traditional transmission gears at present, and the gear life is longer.

In further optimization of the technical solution, the shifting gear rotates synchronously with the drive shaft, and the shift gear and the drive shaft slide through bearings. By adopting the technical scheme, the interference of gears of different sizes is solved during the shifting process.

To further optimize the technical solution, the drive shaft is provided with a slideway for the shifting teeth to slide left and right along the central axis of the drive shaft. By adopting the technical scheme, the replacement of different gear positions is realized, and the structure is simple and the use is convenient.

Further optimization of the technical solution, the number of the shift gears and the shift driven gears is the same, and the shift driven gears and the driven shaft rotate synchronously. The gear driven gear and the driven shaft are connected by a traditional key, which is simple in structure and easy to use.

To further optimize the technical solution, the driving teeth are provided with driving teeth that can cooperate with the driving disc and drive the gear gear to rotate. The driving teeth are arranged in an annular array on the end surface of the driving teeth. The inclined groove extends from the end surface of the shifting tooth toward the direction away from the end surface, the bottom of the inclined groove is a curved surface, the driving tooth is arranged on a sleeve, and the inclined groove is provided on the wall of the sleeve. The cooperation between the chute and the drive plate is adopted. When the chute of the drive tooth contacts the drive plate, the speed difference between the gear gear and the shifting tooth is used to realize the meshing between the drive plate and the chute during the rotation process, and the drive is realized. It is different from the traditional gear. The mating required between clutches is quite different.

To further optimize the technical solution, a drive plate is provided on the side where the shift gear cooperates with the shifting teeth, and the first drive tooth is provided on the drive disc, and the shifting teeth are provided with gears that can cooperate with the drive disc and drive the gear. The second driving tooth for gear rotation, the first driving tooth and the second driving tooth are both helical teeth, and the second driving tooth can be screwed into the first driving tooth by rotation so that the tooth surfaces mesh.

To further optimize the technical solution, the shifting tooth is also connected with an external force unit that can make the shifting tooth move left and right along the slideway. The force provided by the external force unit for the shifting tooth is continuous. The external force unit is a joystick, One or more of cylinders, oil cylinders, electric motors, hydraulic motors, and electromagnets.

The driving disc is provided with a driving rod matched with the second driving tooth. The matching structure between the driving rod and the chute is simple, and with this structure, when the speed of the shift gear followed by the driving rod is higher than that of the driving tooth, the shifting tooth loses the contact force between the shifting tooth and the shifting gear and rotates at a high speed. Under the action of the gear gear, the shifting teeth can be automatically unscrewed out along the chute to realize the reverse gear of the gear.

Further optimization of the technical solution, the drive disc is fixedly connected with the gear gear, the drive disc is provided with an extension that can be inserted into the sleeve, and the drive rod is evenly arranged around the extension in a ring shape, and the number is the same as that of the oblique The number of slots is the same. Simple structure and strong action.

To further optimize the technical solution, the gears include first gear, second gear, third gear and fourth gear, and the positions of first gear, third gear, fourth gear and second gear are sequentially arranged from left to right. The relationship is arranged on the drive shaft, the first gear and the third gear are provided with the first gear, the fourth gear and the second gear are provided with the second gear, the first gear and the second The symmetrical structure of the dialing teeth is the same, the side of the first gear, the third gear and the first dialing tooth is provided with a drive plate, and the side of the fourth gear and the second gear is adjacent to the second dialing tooth. As for the driving disc, second driving teeth are provided at both ends of the No. 1 shifting tooth and the No. 2 shifting tooth.

The beneficial effect of adopting this technical solution: the gearbox can solve the problem that the current agricultural machinery is running at a low speed and cannot be used in a higher gear. With this transmission system, even in farming, it is easy to realize gear shifting , Different gears can be used for operation, the gears are shifted smoothly, the structure is simple, the use is convenient, and the service life of the tractor is improved.

Description of drawings

Fig. 1 is a structural schematic diagram of the novel transmission system (embodiment 1).

Fig. 2 is a schematic diagram of the structure of the end face of the shifting tooth (embodiment 1).

Figure 3 is a schematic diagram of the cooperation between the shifting teeth and the driving disc (embodiment 1)

Fig. 4 is a schematic structural diagram of the novel transmission system (embodiment 2).

Fig. 5 is a schematic diagram of the structure of the end face of the shifting tooth (embodiment 2).

Fig. 6 is a schematic diagram of the disassembled structure of the shifting tooth and the driving disc (embodiment 2).

As shown in the figure: 1. Driving shaft, 2. Shift gear, 2.1, First gear, 2.2, Second gear, 2.3, Third gear, 2.4, Fourth gear, 3, Driven shaft, 5, Shift gear , 5.1, No. 1 shifting tooth, 5.2, No. 2 shifting tooth, 6, gear driven gear, 7, bearing, 8, slideway, 9, driving disc, 10.1, first driving tooth, 10.2, second driving tooth , 11, drive rod, 12, chute, 13, sleeve, 14, extension, 15, external force unit.

Detailed ways

For ease of description, the novel transmission system of the invention will be described in detail below in conjunction with the accompanying drawings.

Example 1:

As shown in Fig. 1, Fig. 2 and Fig. 3, a new type of transmission system includes a drive shaft 1 and a driven shaft 3, a gear gear 2 provided on the drive shaft 1, and a gear gear 2 provided on the driven shaft 3. A driven gear 6, the driving shaft 1 is also provided with a shifting tooth 5, the shifting tooth 5 can slide along the driving shaft 1 under the action of an external force, and the shifting tooth 5 moves toward and approaches the gear gear 2, The shift gear 5 drives the gear gear 2 to rotate, and after the external force is removed, the shift gear 5 disengages from the rotating gear gear 2; the gear driven gear 6 that the gear gear 2 cooperates with is always in a meshing state; the shift gear 5 rotates synchronously with the drive shaft 1, the gear gear 2 and the drive shaft 1 slide through the bearing 7; the drive shaft 1 is provided with a slideway for the shifting gear 5 to slide left and right along the central axis of the drive shaft 1 8. The gear gear 2 has the same number as the gear driven gear 6, and the gear driven gear 6 and the driven shaft 3 rotate synchronously; A driving disc 9 is provided on the side, and a first driving tooth 10.1 is provided on the driving disc 9, and a second driving tooth 10.2 that can cooperate with the driving disc 9 and drive the gear gear 2 to rotate is provided on the shifting tooth 5. A driving tooth 10.1 and a second driving tooth 10.2 are both helical teeth, and the second driving tooth 10.2 can be screwed into the first driving tooth 10.1 by rotation so that the tooth surfaces mesh; The external force unit 15 that the tooth 5 moves left and right along the slideway 8, the force provided by the external force unit 15 for the shifting tooth 5 is continuous, and the external force unit 15 is a joystick, an air cylinder, an oil cylinder, an electric motor, a hydraulic motor, an electromagnetic One or several kinds of iron.

Example 2:

As shown in Figure 4, Figure 5 and Figure 6: a new type of transmission system, including a drive shaft 1 and a driven shaft 3, the gear gear 2 provided on the drive shaft 1, and the gear gear 2 provided on the driven shaft 3 A driven gear 6, the driving shaft 1 is also provided with a shifting tooth 5, the shifting tooth 5 can slide along the driving shaft 1 under the action of an external force, and the shifting tooth 5 moves toward and approaches the gear gear 2, The shift gear 5 drives the gear gear 2 to rotate, and after the external force is removed, the shift gear 5 disengages from the rotating gear gear 2; the gear driven gear 6 that the gear gear 2 cooperates with is always in a meshing state; the shift gear 5 rotates synchronously with the drive shaft 1, the gear gear 2 and the drive shaft 1 slide through the bearing 7; the drive shaft 1 is provided with a slideway for the shifting gear 5 to slide left and right along the central axis of the drive shaft 1 8; the gear gear 2 has the same number as the gear driven gear 6, and the gear driven gear 6 and the driven shaft 3 rotate synchronously; 5. An external force unit 15 that moves left and right along the slideway 8. The force provided by the external force unit 15 for the shifting tooth 5 is continuous. The external force unit 15 is a joystick, an air cylinder, an oil cylinder, an electric motor, a hydraulic motor, an electromagnet One or more of them; the gear gear 2 is provided with a driving disc 9 on the side where the shift gear 2 cooperates with the shifting tooth 5, and the driving disc 9 is provided with a driving rod 11 matching with the second driving tooth 10.2, so The second driving teeth 10.2 are arranged in a circular array on the end face of the shifting tooth 5, and the second driving teeth 10.2 are inclined grooves 12 arranged on the shifting teeth 5, and the inclined groove 12 faces away from the end face of the shifting tooth 5 from the end face Extending, the bottom of the chute 12 is a curved surface, the second drive tooth 10.2 is arranged on a sleeve 13, and the wall of the sleeve 13 is provided with a chute 12; the drive plate 9 is fixed to the gear gear 2 Connected, the drive plate 9 is provided with an extension 14 that can be inserted into the sleeve 13 , and the drive rod 11 is uniformly arranged around the extension 14 in a ring shape, and the number is consistent with the number of the chute 12 .

For example, a four-speed gearbox: the gear gear 2 includes a first gear 2.1, a second gear 2.2, a third gear 2.3 and a fourth gear 2.4. From left to right, the first gear 2.1, the third gear 2.3, the fourth gear The positional relationship between the first gear 2.4 and the second gear 2.2 is arranged on the driving shaft 1, the first gear 5.1 is arranged between the first gear 2.1 and the third gear 2.3, the fourth gear 2.4 and the second gear 2.2 There is No. 2 shifting tooth 5.2 between them, the No. 1 shifting tooth 5.1 and No. 2 shifting tooth 5.2 have the same structure, and the side adjacent to the No. 1 shifting gear 2.1, the third shifting gear 2.3 and No. 1 shifting tooth 5.1 is provided with a drive plate 9. The fourth gear 2.4 and the second gear 2.2 are provided with a drive plate 9 on the side adjacent to the second gear 5.2, and the two ends of the first gear 5.1 and the second gear 5.2 are provided with drive teeth 10 , the external force unit 15 that can make the external force unit 15 to move the external force unit 15 for the external force 5 is continuous, and the external force unit 15 is Joystick and cylinder.

The four gears are connected to the driving shaft through bearings. During the self-transmission process of the driving shaft, the four gears can be stationary; the gear driven gear and the driven shaft are connected by keys, and the gear driven gear and the driven shaft The driving shaft rotates synchronously; each gear is correspondingly provided with a gear driven gear which is always meshed.

Working principle of four-speed transmission:

First of all, using the traditional clutch, using the force of the cylinder and the joystick, the No. 1 shift gear 5.1 is moved to the left, and a continuous force is provided to make the No. 1 shift gear cooperate with the first gear, and the driving shaft rotates to drive the shift gear to rotate. , the driving rod 11 of the first gear 2.1 is screwed into the chute 12, thereby driving the first gear to rotate, and the vehicle is in the first gear operation.

When the second gear needs to be replaced, this process does not require the action of the clutch, and the force of the first gear is canceled, but the first gear still cooperates with the first gear and continues to rotate synchronously. The first gear is from the first gear. Disengage, and then use the force of the cylinder and the operating rod to move the second gear 5.2 to the right, and continue to provide a force that makes the second gear cooperate with the second gear, and the second gear slides to the right After moving to the second gear, the driving disc of the second gear and the driving tooth of the second dial cooperate with each other, and the force of the second dial completes the cooperation. At this time, the second gear and the drive shaft rotate synchronously, because the second gear The drive outer diameter of the drive shaft is larger than the drive outer diameter of the first-gear gear. When the speed of the driving shaft is inconvenient, the speed of the driven shaft increases, and the speed of the driven shaft increases, which drives the speed of the driven gear meshing with the first-gear gear. As a result, the speed of the first gear is increased. When the speed of the first gear is increased, the speed of the driving gear connected to the drive rod on the side of the first gear is lower than that of the first gear. Cancellation, the No. 1 dial is automatically thrown out, the No. 1 dial is separated from the first gear, and the first gear is changed to the second gear. This process does not have the function of the clutch. As a result, the vehicle stops moving forward. When the second gear is used, it runs on the basis of a certain initial speed. Therefore, it is like a tractor in the case of good road conditions, using the inertia in the form to change the first gear to the second gear. Under certain circumstances, the second gear can continue to work, and the vehicle speed can be further increased.

The action principle of changing from second gear to third gear and from third gear to fourth gear is similar, except that the shifting teeth are matched with different gears. Although the reverse gear is not described in the present embodiment, the reverse gear is a gear, and the clutch can be used to set the reverse gear.

In the foregoing embodiment, the best implementation mode of the present invention has been described. Obviously, many changes can still be made under the inventive concept of the present invention. It should be noted that any changes made under the inventive concept of the present invention will fall within the protection scope of the present invention.

Claims (10)

1. A new type of transmission system, including the driving shaft (1) and the driven shaft (3), the gear gear (2) provided on the driving shaft (1), and the gear gear (2) provided on the driven shaft (3) The driven gear (6) is characterized in that: the driving shaft (1) is also provided with a shifting tooth (5), and the shifting tooth (5) can slide along the driving shaft (1) under the action of external force, so The shifting tooth (5) moves toward and approaches the shift gear (2), and the shift tooth (5) drives the shift gear (2) to rotate. After the external force is removed, the shift tooth (5) moves from the rotating shift gear (2) break away. 2. The new transmission system according to claim 1, characterized in that: the gear driven gear (6) that the gear gear (2) cooperates with is always in meshing state. 3. The new transmission system according to claim 1, characterized in that: the shift gear (5) rotates synchronously with the drive shaft (1), and the gear gear (2) passes through the drive shaft (1) The bearing (7) slides. 4. The new transmission system according to claim 1, characterized in that: the drive shaft (1) is provided with a slideway (8) for sliding the shifting gear (5) left and right along the central axis of the drive shaft (1) ). 5. The new transmission system according to claim 1, characterized in that: the gear gear (2) has the same number as the gear driven gear (6), and the gear driven gear (6) has the same number as the driven gear The shafts (3) rotate synchronously. 6. The new speed change system according to claim 1, characterized in that: a driving disc (9) is provided on the side where the shift gear (2) cooperates with the shifting gear (5), and the driving disc (9) The first driving tooth (10.1) is provided on the top, and the second driving tooth (10.2) that can cooperate with the driving disc (9) and drive the gear gear (2) to rotate is provided on the shifting tooth (5). Both the tooth (10.1) and the second driving tooth (10.2) are helical teeth, and the second driving tooth (10.2) can be screwed into the first driving tooth (10.1) by rotation so that the tooth surfaces mesh. 7. The new transmission system according to claim 1, characterized in that: the shifting tooth (5) is connected with an external force unit (15) capable of moving the shifting tooth (5) left and right along the slideway (8) , the force provided by the external force unit (15) for the shifting tooth (5) is continuous, and the external force unit (15) is one or more of a joystick, a cylinder, an oil cylinder, an electric motor, a hydraulic motor, and an electromagnet. kind. 8. The new transmission system according to claim 6, characterized in that: the drive disc (9) is provided with a drive rod (11) that matches the second drive tooth (10.2), and the second drive tooth (10.2) is in a circular array on the end face of the shifting tooth (5), the second drive tooth (10.2) is a chute (12) arranged on the shifting tooth (5), and the chute (12) starts from the shifting tooth (5) The end face extends away from the end face, the bottom of the chute (12) is a curved surface, the second drive tooth (10.2) is set on a sleeve (13), and the wall of the sleeve (13) A chute (12) is provided. 9. The new transmission system according to claim 8, characterized in that: the drive disc (9) is fixedly connected with the gear gear (2), and the drive disc (9) is provided with a gear that can be inserted into the sleeve ( 13) in the extension part (14), the driving rod (11) is evenly arranged around the extension part (14) in a ring shape, and the number is consistent with the number of the chute (12). 10. The new transmission system according to claim 9, characterized in that: the gears (2) include first gear (2.1), second gear (2.2), third gear (2.3) and fourth gear (2.4), arranged on the driving shaft (1) according to the positional relationship of the first gear (2.1), the third gear (2.3), the fourth gear (2.4) and the second gear (2.2) from left to right, so Between the first gear (2.1) and the third gear (2.3) there is a No. 1 dial (5.1), between the fourth gear (2.4) and the second gear (2.2) there is a No. 2 dial (5.2) ), the first gear (5.1) and the second gear (5.2) have the same structure, the first gear (2.1), the third gear (2.3) and the first gear (5.1) are located on the side adjacent to There is a drive plate (9), the fourth gear (2.4) and the second gear (2.2) are provided with a drive plate (9) on the side adjacent to the second gear (5.2), and the first gear (5.1 ) and the second driving tooth (10.2) are provided at both ends of the second shifting tooth (5.2).