Self-speed-change gear box

Abstract

The invention discloses a self-speed-change gear box which comprises a gear box body. The gearbox body comprises two oppositely-arranged mounting seats, a plurality of supporting rods are evenly arranged between the two mounting seats in the circumferential direction, and the gearbox body further comprises an input driving gear, an input driven gear assembly, a connecting rod, an output driving gear assembly and an output driven gear which are rotationally assembled with the mounting seats. The top of the input driving gear is rotationally connected with the bottom of the output driven gear through a reversing one-way bearing. The input driven gear assembly is meshed with the input driving gear, the output driving gear assembly is meshed with the output driven gear, and the connecting rod is connected between the input driven gear assembly and the output driving gear assembly; and a rotation adjusting mechanism is arranged on the input driven gear assembly. The output rotating speed can be automatically adjusted according to the resistance change of the output end without manual intervention, so that the automation level and the operation efficiency of equipment are improved, and the manual operation cost and the labor intensity are reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of gearboxes, in particular to a self-variable gearbox. BACKGROUND

[0002] In the traditional gearbox technology system, the gear shift fork is commonly used to manually shift gears with different tooth numbers to change the output speed. This traditional variable speed method has many drawbacks, such as: Strong operation dependency: The speed changing process completely depends on manual operation, which requires operators to have certain professional knowledge and skills, and human errors may occur during operation, affecting the normal operation of the equipment.

[0003] Low automation: In modern industrial production, many devices need to automatically adjust the speed under high-speed operation and complex working conditions to ensure production efficiency and product quality. The traditional manual variable speed method cannot meet this demand, limiting the automation level and application range of the equipment.

[0004] Slow response speed: Manual operation cannot respond to load changes in time, and when the load suddenly increases or decreases, the output speed cannot be adjusted quickly, causing unstable operation of the equipment and even damage to the equipment.

[0005] Therefore, it is an urgent problem for the present technical personnel in the field to provide a self-variable gearbox. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a self-variable gearbox that can automatically adjust the output speed according to the resistance change of the output end without human intervention, thereby improving the automation level and operation efficiency of the equipment and reducing the labor cost and labor intensity of manual operation.

[0007] To solve the above technical problems, the technical solution adopted by the present application is as follows.

[0008] The self-variable gearbox comprises a gearbox body; the gearbox body comprises two oppositely arranged mounting seats, a plurality of support rods for supporting the two mounting seats are uniformly arranged between the two mounting seats in the circumferential direction, wherein it further comprises an input driving gear rotatably assembled with the mounting seat and used for receiving the input power from an external power source, an input driven gear assembly for realizing power transmission, a connecting rod and an output driving gear assembly, and an output driven gear for realizing power output. The top of the input driving gear is rotatably connected with the bottom of the output driven gear through a reversing one-way bearing; the input driven gear assembly is engaged with the input driving gear, the output driving gear assembly is engaged with the output driven gear, and a connecting rod is connected between the input driven gear assembly and the output driving gear assembly; a rotation adjusting mechanism for adjusting the transmission ratio according to the resistance transmitted from the output driven gear to the connecting rod to realize gear shifting is arranged on the input driven gear assembly.

[0009] Preferably, the input driven gear assembly comprises a synchronous crankshaft, and two sets of rotation adjusting mechanisms are oppositely arranged on the synchronous crankshaft; the rotation adjusting mechanism comprises a rotating support rotatably connected with the same side mounting seat through an input bidirectional bearing and protruding out of the mounting seat at both ends, and an adjusting connecting rod is rotatably arranged in the rotating support through a penetrating pin shaft; the top of the adjusting connecting rod protrudes out of the top of the rotating support and is sleeved with a rotating speed adjusting slider, and the top of the rotating support is further provided with an input connecting rod transmission sleeve located on the outer surface of the mounting seat and provided with a guide slot, and the top of the rotating speed adjusting slider is rotatably connected with the first end of the same side connecting rod through the guide slot and the input connecting rod transmission sleeve; an elastic component for being compressed by the resistance transmitted to the connecting rod is arranged between the bottom of the adjusting connecting rod and the synchronous crankshaft to drive the rotating speed adjusting slider to move under the action of the elastic force to change the rotating radius of the rotating speed adjusting slider and realize the adjustment of the transmission ratio; the bottom of the rotating support of one set of the rotation adjusting mechanism is provided with an input driven gear engaged with the input driving gear.

[0010] Preferably, the elastic component is a rotating speed adjusting spring, and a protrusion for limiting the rotating speed adjusting spring from the bottom of the rotating speed adjusting spring is arranged on the synchronous crankshaft and penetrates into the rotating speed adjusting spring; the top of the rotating speed adjusting spring is provided with a spring pin for abutting against the adjusting connecting rod and limiting the rotating speed adjusting spring from the top of the rotating speed adjusting spring.

[0011] Preferably, the elastic component is a nitrogen spring.

[0012] Preferably, the output driving gear assembly comprises a gear shaft penetrating between two mounting seats and rotatably connected with the mounting seats through an output bidirectional bearing, both ends of the gear shaft protrude out of the same side mounting seat and are provided with an output one-way bearing engaged with the gear shaft through a key, an output connecting rod transmission sleeve fixedly connected with the output one-way bearing is sleeved on the output one-way bearing, and the second end of the same side connecting rod is rotatably connected with the output connecting rod transmission sleeve; the gear shaft is provided with an output driving gear engaged with the output driven gear through the output one-way bearing.

[0013] Preferably, the input driven gear assembly is arranged in two sets and opposite to each other on both sides of the input driving gear and the output driven gear, and the output driving gear assembly is also arranged in two sets and opposite to each other on both sides of the input driving gear and the output driven gear, with the input driven gear assembly and the output driving gear assembly being arranged alternately; there are four connecting rods, with every two connecting rods arranged on the same side and connected between an input end connecting rod transmission sleeve and an output end connecting rod transmission sleeve, and every two connecting rods on opposite sides connected between the same input driven gear assembly and the same output driving gear assembly.

[0014] Due to the adoption of the above technical solutions, the technical progress achieved by this invention is as follows.

[0015] This invention ensures high efficiency and stability of power transmission by cooperating and working together with the input driving gear, output driven gear, reversing one-way bearing, input driven gear assembly, connecting rod, and output driving gear assembly. Simultaneously, by changing the rotation radius of the speed adjustment slider through the pressure on the rotation adjustment mechanism, an automatic speed change function is achieved. This allows for automatic adjustment of the output speed based on actual transmission resistance without manual intervention, thus improving the automation level and working efficiency of the gearbox.

[0016] This invention features a fast response speed: due to the adoption of an automatic speed change mechanism, the gearbox can quickly adjust the output speed when the load changes, responding promptly to load changes, ensuring stable operation of the equipment, and improving production efficiency and product quality.

[0017] This invention has a wide range of applications: it can automatically adjust the output speed according to different working conditions and load requirements, and is suitable for various mechanical equipment that requires variable speed transmission, and has broad application prospects. Attached Figure Description

[0018] Figure 1 This is a perspective view of the present invention; Figure 2 This is a top view of the present invention; Figure 3 This is a schematic diagram of the assembly of the input driving gear and the output driven gear of the present invention; Figure 4 For the present invention Figure 3 Exploded view; Figure 5 This is a schematic diagram of the input driven gear assembly of the present invention; Figure 6 For the present invention Figure 5 Exploded view; Figure 7 This is a schematic diagram of the output drive gear assembly of the present invention; Figure 8 For the present invention Figure 7 Exploded view.

[0019] Wherein: 1. input driving gear, 2. output driven gear, 3. reversing one-way bearing, 4. output driving gear, 5. output one-way bearing, 6. gear shaft, 7. output end bidirectional bearing, 8. output end one-way bearing, 9B. output end connecting rod transmission sleeve, 9A. input end connecting rod transmission sleeve, 10. rotating speed adjusting slider, 11. input end bidirectional bearing, 12. input driven gear assembly, 13. rotating support, 14. pin shaft, 15. adjusting connecting rod, 16. spring pin, 17. rotating speed adjusting spring, 18. synchronous crankshaft, 19. connecting rod, 20. mounting seat, 21. support rod, A. input driven gear assembly, B. output driving gear assembly. DETAILED DESCRIPTION

[0020] The application will be further described in detail below in combination with the drawings and specific embodiments.

[0021] A self-variator gearbox, comprising Figures 1-2 As shown in the drawings, the gearbox comprises a gearbox body, an input driving gear 1, an input driven gear assembly A, a connecting rod 19, an output driving gear assembly B and an output driven gear 2. The gearbox body comprises two oppositely arranged mounting seats 20, and a plurality of support rods 21 are uniformly arranged between the two mounting seats 20 in the circumferential direction, which are used to support the two mounting seats 20, thereby ensuring the stability of the gearbox body 20 during operation. The input driving gear 1, the input driven gear assembly A, the connecting rod 19, the output driving gear assembly B and the output driven gear 2 are respectively rotationally assembled with the mounting seat 20. The input driving gear 1 is used to receive power input from an external power source. The input driven gear assembly A, the connecting rod 19 and the output driving gear assembly B are used to realize power transmission. The output driven gear 2 is used to realize power output.

[0022] As shown in the drawings, Figures 3-4 The top of the input driving gear 1 is rotationally connected with the bottom of the output driven gear 2 through the reversing one-way bearing 3. The input driven gear assembly A is engaged with the input driving gear 1, the output driving gear assembly B is engaged with the output driven gear 2, and the connecting rod 19 is connected between the input driven gear assembly A and the output driving gear assembly B. When the input driving gear 1 starts to rotate under the drive of the power source, it will drive the input driven gear assembly A to rotate. The input driven gear assembly A transmits power to the connecting rod 19, which in turn transmits power to the output driving gear assembly B. The output driving gear assembly B transmits power to the output driven gear 2, and finally realizes the output of rotating speed. At the same time, a rotating adjusting mechanism is arranged on the input driven gear assembly A, which is used to adjust the transmission ratio according to the resistance from the output driven gear 2 to the connecting rod 19, thereby realizing speed change and achieving the adjustment of output rotating speed.

[0023] As shown in the drawings, Figures 5-6As shown, the input driven gear assembly A includes a synchronous crankshaft 18, and two sets of rotation adjusting mechanisms are arranged on the synchronous crankshaft 18. The rotation adjusting mechanism includes a rotating support 13, which is rotatably connected to the same side mounting seat 20 through an input end double-direction bearing 11, and the two ends of the rotating support 13 respectively pass out of the mounting seat 20, and the input end double-direction bearing 11 realizes the rotation assembly of the input driven gear assembly A and the mounting seat 20. The inside of the rotating support 13 is rotatably provided with an adjusting connecting rod 15 through a penetrating pin shaft 14, the top of the adjusting connecting rod 15 passes out of the top of the rotating support 13 and is sleeved with a rotating speed adjusting slider 10, and the top of the rotating support 13 is also provided with an input end connecting rod transmission sleeve 9A, which is located on the outer surface of the mounting seat 20 and is provided with a guide slot, and the top of the rotating speed adjusting slider 10 passes out of the input end connecting rod transmission sleeve 9A and is rotatably connected to the first end of the same side connecting rod 19 through the guide slot. The bottom of the adjusting connecting rod 15 and the synchronous crankshaft 18 are provided with an elastic component, which is compressed by the resistance transmitted to the connecting rod 19 and drives the rotating speed adjusting slider 10 to move under the action of the elastic force, so as to change the rotating radius of the rotating speed adjusting slider 10, realize the adjustment of the transmission ratio, and then realize the speed change. The bottom of the rotating support 13 of one set of rotation adjusting mechanisms is provided with an input driven gear 12, and the input driving gear 1 is engaged with the input driven gear 12, so as to drive the input driven gear 12 to rotate, and the input driven gear 12 drives the rotation adjusting mechanism to transmit power to the connecting rod 19.

[0024] Specifically, the elastic component can be a rotating speed adjusting spring 17, and a protrusion is arranged on the synchronous crankshaft 18, the protrusion penetrates into the rotating speed adjusting spring 17 from the bottom of the rotating speed adjusting spring 17, and the protrusion is used for limiting the rotating speed adjusting spring 17 from the bottom of the rotating speed adjusting spring 17; the top of the rotating speed adjusting spring 17 is provided with a spring pin 16, the top of the spring pin 16 abuts against the adjusting connecting rod 15, and the bottom of the spring pin 16 penetrates into the top of the rotating speed adjusting spring 17, and the rotating speed adjusting spring 17 is used for limiting the rotating speed adjusting spring 17 from the top of the rotating speed adjusting spring 17 and transmitting pressure to the rotating speed adjusting spring 17. At the same time, the elastic component can also be a nitrogen spring.

[0025] As Figures 7-8As shown, the output drive gear assembly B includes a gear shaft 6 passing between two mounting seats 20. Both ends of the gear shaft 6 are rotatably connected to the mounting seats 20 via output end double-direction bearings 7, thus enabling the output drive gear assembly B to be rotatably assembled with the mounting seats 20. Both ends of the gear shaft 6 extend out of the mounting seats 20 on the same side and are equipped with output end one-way bearings 8. The output end one-way bearings 8 and gear shaft 6 are keyed together, and an output end connecting rod transmission sleeve 9B is fitted onto the output end one-way bearing 8. The output end connecting rod transmission sleeve 9B is fixedly connected to the output end one-way bearing 8 and rotatably connected to the second end of the connecting rod 19 on the same side. When the input driven gear 12 in the input driven gear assembly A rotates, it drives the rotation adjustment mechanism to transmit power to the connecting rod 19, which then transmits the power to the output drive gear assembly B. An output drive gear 4 is mounted on the gear shaft 6 via an output one-way bearing 5. The output drive gear 4 meshes with the output driven gear 2, and the power transmitted to the output drive gear assembly B is transmitted to the output driven gear 2 through the output drive gear 4.

[0026] There are two sets of input driven gear assemblies A, which are arranged opposite each other on both sides of the input driving gear 1 and the output driven gear 2. Similarly, there are two sets of output driving gear assemblies B, which are also arranged opposite each other on both sides of the input driving gear 1 and the output driven gear 2, with the input driven gear assemblies A and B alternating in arrangement. There are four connecting rods 19. Every two connecting rods 19 are arranged on the same side and connected between an input end connecting rod transmission sleeve 9A and an output end connecting rod transmission sleeve 9B. Every two connecting rods 19 on opposite sides are connected between the same input driven gear assembly A and the same output driving gear assembly B. This design not only achieves uniform power transmission and coordinated operation but also creates a reasonable spatial layout, facilitating installation and maintenance.

[0027] The working principle of this invention is as follows: When the input drive gear 1 starts to rotate under the drive of the power source, it will drive the input driven gear 12, which meshes with it, to rotate. The input driven gear 12 transmits power to the connecting rod 19 through various components in the input driven gear assembly A, and the connecting rod 19 then transmits the power to the output drive gear assembly B. In the output drive gear assembly B, the power is transmitted to the output driven gear 2 through the output drive gear 4, ultimately realizing the regulation and output of the speed.

[0028] In this process, the rotation speed adjusting spring 17 will be elastically deformed according to the resistance transmitted from the output driven gear 2 end to the connecting rod 19. When the resistance increases, the rotation speed adjusting spring 17 will be compressed, so that the rotation radius of the rotation speed adjusting slider 10 is reduced, the transmission ratio changes, and the output rotation speed decreases; on the contrary, when the resistance decreases, the rotation speed adjusting spring 17 will restore to the original state, the rotation radius of the rotation speed adjusting slider 10 increases, the transmission ratio changes again, and the output rotation speed increases. In this way, the gear box can automatically adjust the output rotation speed according to the change of the load, realizing the function of automatic speed change.

Claims

1. A transmission gear box, comprising a gear box body; the gear box body comprises two oppositely arranged mounting seats (20), and a plurality of support rods (21) for supporting the two mounting seats (20) are uniformly arranged between the two mounting seats (20) in the circumferential direction, characterized in that: It also includes an input driving gear (1) which is rotatably assembled with the mounting seat (20) and is used for receiving the input power of an external power source, an input driven gear assembly (A) which is used for realizing power transmission, a connecting rod (19) and an output driving gear assembly (B), and an output driven gear (2) which is used for realizing power output; The top of the input driving gear (1) is rotatably connected with the bottom of the output driven gear (2) through a reversing one-way bearing (3); the input driven gear assembly (A) is engaged with the input driving gear (1), the output driving gear assembly (B) is engaged with the output driven gear (2), and the connecting rod (19) is connected between the input driven gear assembly (A) and the output driving gear assembly (B); a rotation adjusting mechanism is arranged on the input driven gear assembly (A) and is used for adjusting the transmission ratio according to the resistance transmitted from the output driven gear (2) to the connecting rod (19) to realize gear shifting.

2. The self-shifting gearbox of claim 1, wherein: The input driven gear assembly (A) comprises a synchronous crankshaft (18), and two groups of rotation adjusting mechanisms are oppositely arranged on the synchronous crankshaft (18); each rotation adjusting mechanism comprises a rotating support (13) which is rotatably connected with the same side mounting seat (20) through an input end bidirectional bearing (11) and has two ends penetrating out of the mounting seat (20), and an adjusting connecting rod (15) which is rotatably arranged in the rotating support (13) through a penetrating pin shaft (14); the top of the adjusting connecting rod (15) penetrates out of the top of the rotating support (13) and is sleeved with a rotating speed adjusting slider (10), and the top of the rotating support (13) is further provided with an input end connecting rod transmission sleeve (9A) which is located on the outer surface of the mounting seat (20) and is provided with a guide slot, and the top of the rotating speed adjusting slider (10) penetrates out of the input end connecting rod transmission sleeve (9A) through the guide slot and is rotatably connected with the first end of the same side connecting rod (19); an elastic component is arranged between the bottom of the adjusting connecting rod (15) and the synchronous crankshaft (18) and is used for being compressed by the resistance transmitted to the connecting rod (19) to drive the rotating speed adjusting slider (10) to move under the action of elastic force so as to change the rotating radius of the rotating speed adjusting slider (10) to realize the adjustment of the transmission ratio; the bottom of the rotating support (13) of one group of the rotation adjusting mechanisms is provided with an input driven gear (12) which is engaged with the input driving gear (1).

3. A self-shifting gearbox as claimed in claim 2, characterised in that: The elastic component is a rotating speed adjusting spring (17), and the synchronous crankshaft (18) is provided with a protrusion which penetrates into the rotating speed adjusting spring (17) from the bottom of the rotating speed adjusting spring (17) and is used for limiting the rotating speed adjusting spring (17) from the bottom of the rotating speed adjusting spring (17); the top of the rotating speed adjusting spring (17) is provided with a spring pin (16) which abuts against the adjusting connecting rod (15) and is used for limiting the rotating speed adjusting spring (17) from the top of the rotating speed adjusting spring (17).

4. The self-shifting gearbox of claim 2, wherein: The elastic component is a nitrogen spring.

5. The self-shifting gearbox of claim 2, wherein: The output driving gear assembly (B) comprises a gear shaft (6) penetrating between two mounting seats (20) and being rotatably connected with the mounting seats (20) through output bidirectional bearings (7), both ends of the gear shaft (6) penetrating out of the same side mounting seat (20) and being provided with output unidirectional bearings (8) which are fixedly connected with the gear shaft (6) through key cooperation, the output unidirectional bearings (8) being sleeved with output connecting rod transmission sleeves (9B) which are fixedly connected with the output unidirectional bearings (8), the output connecting rod transmission sleeves (9B) being rotatably connected with the second ends of the same side connecting rods (19); the gear shaft (6) is provided with an output driving gear (4) which is meshingly connected with an output driven gear (2) through an output unidirectional bearing (5).

6. A self-shifting gearbox according to claim 5, characterised in that: The input driven gear assembly (A) is two groups and oppositely arranged on both sides of the input driving gear (1) and the output driven gear (2), the output driving gear assembly (B) is two groups and oppositely arranged on both sides of the input driving gear (1) and the output driven gear (2), and the input driven gear assembly (A) and the output driving gear assembly (B) are alternately arranged; the connecting rods (19) are four, every two connecting rods (19) are arranged on the same side and connected between an input connecting rod transmission sleeve (9A) and an output connecting rod transmission sleeve (9B), and every two connecting rods (19) on the different sides are connected between the same input driven gear assembly (A) and the output driving gear assembly (B).

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