Speed-increasing gearbox

Abstract

The utility model relates to a speed increasing box, and belongs to the technical field of speed increasing boxes. The speed increasing box comprises an input shaft system and an output shaft system; the input shaft system comprises an input shaft, a first electromagnetic clutch, a large belt pulley, a first belt, a second electromagnetic clutch, a large gear, a large belt pulley bearing and a large gear bearing; the input shaft is connected with a power source; the output shaft system comprises an output shaft, a third electromagnetic clutch, a small belt pulley, a fourth electromagnetic clutch and a pinion; the output shaft is connected with the load rotor; when the first electromagnetic clutch and the third electromagnetic clutch are electrified, the input shaft is connected with the output shaft through the large belt pulley, the first belt and the small belt pulley; when the second electromagnetic clutch and the fourth electromagnetic clutch are powered on, the input shaft is connected with the output shaft through the large gear and the small gear. According to the utility model, different acceleration forms are selected according to test working conditions, the operation is convenient, the risk is low, the test efficiency and the test accuracy are improved, and the test cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of speed increasing boxes, in particular to high-speed rotation test equipment in the field of aviation technology, and in particular to a speed increasing box. Background Art

[0002] The vertical rotor overspeed test bench drive device currently widely used in the field of aviation technology is mainly composed of a motor and a transmission system. The key components of the transmission system are a parallel shaft gear speed increaser, a planetary gear speed increaser, large and small pulleys, etc. There are three specific transmission forms: the first is that the main motor is connected to the low-speed input shaft of the gear speed increaser through a coupling, the high-speed output shaft of the speed increaser is connected to the flexible shaft, and the rotor load is installed at the bottom of the flexible shaft; the second is that a large pulley is installed on the output shaft of the main motor to directly drive the small pulley shaft to rotate through belt transmission, the top of the flexible shaft is connected to the small pulley shaft, and the rotor load is installed at the bottom of the flexible shaft; the third is that a large pulley is installed on the output shaft of the main motor, a small pulley is installed on the input shaft of the gear speed increaser, the large and small pulleys are connected through a high-speed belt, the output shaft of the gear speed increaser is connected to the flexible shaft, and the rotor load is installed at the bottom of the flexible shaft. The main motor is accelerated by two stages of belt drive and gear drive, and finally the flexible shaft is rotated at high speed.

[0003] The vertical rotor overspeed test bench can realize high-speed rotation of the loaded rotor through the flexible shaft under the action of the drive device, and can complete rotor fatigue test, rupture test and overspeed test, etc.

[0004] During a rupture test, if a rotor breaks while rotating at high speed, the sudden change in unbalance can generate a massive vibration shock, which is transmitted through the flexible shaft to the high-speed output shaft of the gearbox, potentially causing serious damage to the gearbox or even the main motor. Damage to the gearbox or main motor results in long and costly repair cycles, and high-speed transmission installation and disassembly are complex, requiring specialized installation. Belt-driven speed increasers offer a simple transmission system structure and easy installation. The belt provides a flexible connection, so the vibration shock from a broken rotor is transmitted through the flexible shaft to the small belt shaft, where it is isolated by the belt, preventing damage to the main motor.

[0005] During fatigue testing, the rotor needs to accelerate and decelerate cyclically, with a short cycle time and a large number of cycles. The belt drive speed increaser has a large speed overshoot and low speed stabilization accuracy during cyclic acceleration and deceleration. The gear speed increaser has a fast cyclic acceleration and deceleration response, a small speed overshoot, high speed stabilization accuracy, and a long service life.

[0006] In actual production, to ensure the safety and economical use of vertical rotor overspeed equipment, rotor overspeed and fatigue tests are often conducted on test benches with gearbox-type transmission systems, while rotor rupture tests are often conducted on test benches with belt-type transmission systems. Therefore, manufacturers that need to meet all three test requirements typically equip vertical rotor overspeed test benches with two transmission types, which increases the manufacturer's testing costs and requires a large amount of testing space.

[0007] In addition, if two sets of drive devices are designed on the same equipment, in order to facilitate installation and operation, two independent power sources, lubrication auxiliary systems and digital control systems are required. Moreover, the mechanical interface, electrical circuits and oil pipelines need to be switched and installed before the test, which is not only troublesome to operate but also poses a hidden danger to the stability of the equipment. Utility Model Content

[0008] In view of the problem that the drive device of the above-mentioned vertical rotor overspeed test bench cannot take into account both gear transmission and belt transmission, the utility model provides a speed increaser, which can integrate gear transmission and belt transmission into one, and different speed increase forms can be selected according to the test conditions.

[0009] To achieve the above purpose, the present invention provides the following technical solutions:

[0010] A speed increasing gearbox, comprising an input shaft system and an output shaft system;

[0011] The input shaft system includes an input shaft, a first electromagnetic clutch, a large pulley, a first belt, a second electromagnetic clutch, a large gear, a large pulley bearing, and a large gear bearing; the input shaft is connected to a power source, and the first electromagnetic clutch, the large pulley bearing, the second electromagnetic clutch, and the large gear bearing are sequentially sleeved on the input shaft; the large pulley is sleeved on the input shaft via the large pulley bearing; the large pulley is connected to the first electromagnetic clutch; the large gear is sleeved on the input shaft via the large gear bearing; and the large gear is connected to the second electromagnetic clutch;

[0012] The output shaft system includes an output shaft, a third electromagnetic clutch, a small pulley, a fourth electromagnetic clutch, and a pinion; the third electromagnetic clutch, the small pulley, the fourth electromagnetic clutch, and the pinion are sequentially sleeved on the output shaft, and the small pulley and the pinion are respectively sleeved on the output shaft through bearings; the small pulley is connected to the third electromagnetic clutch, and the pinion is connected to the fourth electromagnetic clutch; the output shaft is connected to the load rotor;

[0013] The large pulley is connected to the small pulley via the first belt; the large gear is meshed with the small gear;

[0014] When the first electromagnetic clutch and the third electromagnetic clutch are energized, the input shaft is connected to the output shaft through the large pulley, the first belt and the small pulley; when the second electromagnetic clutch and the fourth electromagnetic clutch are energized, the input shaft is connected to the output shaft through the large gear and the small gear.

[0015] Furthermore, the speed increaser also includes a gear drive transition shaft system and a belt drive transition shaft system; the input shaft is meshed and connected to the gear drive transition shaft system through the large gear, and the gear drive transition shaft system is connected to the output shaft through the small gear; the input shaft is connected to the belt drive transition shaft system through the first belt, and the belt drive transition shaft system is connected to the small pulley on the output shaft through the second belt.

[0016] Furthermore, the gear transmission transition shaft system includes a gear transmission transition shaft, a transition gear, and a transition gear bearing; the transition gear is installed on the gear transmission transition shaft through the transition gear bearing; the large gear is meshed and connected with the small gear through the transition gear.

[0017] Furthermore, the transition gear includes a small transition gear and a large transition gear that are coaxially arranged in an integral body; the large gear is meshed and connected with the small transition gear, and the large transition gear is meshed and connected with the small gear.

[0018] Furthermore, the belt-driven transition shaft system also includes a belt-driven transition shaft and a transition pulley; the transition pulley is installed on the belt-driven transition shaft through a bearing; the transition pulley is connected to the large pulley through the first belt, and the transition pulley is connected to the small pulley through the second belt.

[0019] Furthermore, the transition pulley is composed of a small transition pulley and a large transition pulley coaxially arranged in an integral manner; the small transition pulley is connected to the large pulley through the first belt, and the large transition pulley is connected to the small pulley through the second belt.

[0020] Furthermore, the speed increasing ratio of the speed increasing box is adjusted by replacing the gear transmission transition shaft system and the belt transmission transition shaft system of different sizes.

[0021] Furthermore, the speed increaser also includes a box body, which includes a box cover, an electromagnetic clutch mounting plate, a partition plate, a box enclosure, and a box bottom plate; the box cover and the box bottom plate are respectively installed on the upper and lower ends of the box enclosure; the partition plate is installed in the box body, dividing the inner cavity of the box body into an upper cavity and a lower cavity; the electromagnetic clutch mounting plates are respectively installed on the left and right sides of the upper cavity and the lower cavity, and the first electromagnetic clutch, the second electromagnetic clutch, the third electromagnetic clutch and the fourth electromagnetic clutch are connected to the box body through the corresponding electromagnetic clutch mounting plates; the upper and lower ends of the input shaft and the output shaft are respectively installed on the box cover and the box bottom plate through bearings.

[0022] Furthermore, the input shaft system also includes an input shaft upper end bearing and an input shaft lower end bearing; the upper and lower ends of the input shaft are respectively mounted on the box cover and the box bottom plate through the input shaft upper end bearing and the input shaft lower end bearing.

[0023] Furthermore, the housing is a split structure, consisting of two independent cavities combined upper and lower; the first electromagnetic clutch, the second electromagnetic clutch, the third electromagnetic clutch and the fourth electromagnetic clutch are respectively installed in the housing through electromagnetic clutch mounting plates.

[0024] Beneficial effects of the utility model:

[0025] The speed increaser of the utility model integrates the gear drive and the belt drive into one, and switches the gear drive and the belt drive through the electromagnetic clutch on the input shaft system and the output shaft system, so that the same test equipment can take into account both the gear drive and the belt drive speed increase forms, and can meet the fatigue test, overspeed test and rupture test at the same time, greatly reducing the risk of equipment damage, improving equipment stability, and reducing the manufacturer's equipment procurement cost. In addition, different working conditions can be switched on the same test equipment, which is easy to operate, reduces tooling switching time, improves test efficiency, and improves test accuracy.

[0026] The utility model can realize convenient switching of the speed increasing mode through the electromagnetic clutch.

[0027] The utility model can adjust the speed increasing ratio by adjusting the specifications and sizes of the gear transmission transition shaft system and the belt transmission transition shaft system.

[0028] The utility model places the belt drive and the gear drive in two cavities, which is convenient for designing the gear drive lubrication system. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the speed increaser of the utility model;

[0030] Figure 2This is a schematic diagram of the internal structure of the speed increaser of the utility model;

[0031] Figure 3 This is a cross-sectional view of the speed increaser of the utility model;

[0032] Figure 4 This is a schematic diagram of the half-section structure of the electromagnetic clutch in the utility model.

[0033] Among them: 1-input shaft system, 101-input shaft, 102-first electromagnetic clutch, 103-large pulley, 104-first belt, 105-second electromagnetic clutch, 106-large gear, 107-input shaft upper end bearing, 108-large pulley bearing, 109-large gear bearing, 110-input shaft lower end bearing, 2-gear transmission transition shaft system, 201-gear transmission transition shaft, 202-transition gear, 203-transition gear bearing, 3-belt transmission transition shaft system, 301-belt transmission transition shaft, 302-transition Pulley, 303-second belt, 4-output shaft system, 401-output shaft, 402-third electromagnetic clutch, 403-small pulley, 404-fourth electromagnetic clutch, 405-pinion, 5-box, 501-box cover, 502-electromagnetic clutch mounting plate, 503-partition plate, 504-box enclosure, 505-box bottom plate, 601-clutch bearing, 602-yoke, 603-rivet, 604-spring sheet, 605-bolt connection hole, 606-armature, 607-moving plate, 608-friction plate. DETAILED DESCRIPTION

[0034] The following embodiments are used to further describe the specific embodiments of the present invention in conjunction with the accompanying drawings and examples. The following embodiments are only used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0035] Terms such as "upper," "lower," "left," "right," "inner," "outer," "front," "back," "head," and "tail" in this application are based on the directions or positions shown in the accompanying drawings. The corresponding positions may vary depending on the drawings, and should not be construed as limiting the scope of protection.

[0036] In this utility model, the terms "installed," "connected," "connected," "connected," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, integral connection, mechanical connection, electrical connection, or mutual communication. They can also refer to direct connection or indirect connection through an intermediate medium. They can also refer to internal communication between two components or interaction between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0037] This embodiment describes a speed increasing box that integrates a gear transmission structure and a belt transmission structure into one, and can select whether to use gear transmission or belt transmission to transmit power according to the test conditions.

[0038] like Figure 1 As shown, the speed increaser includes an input shaft system 1, a gear transmission transition shaft system 2, a belt transmission transition shaft system 3, an output shaft system 4, and a housing 5. The input shaft system 1, the gear transmission transition shaft system 2, the belt transmission transition shaft system 3, and the output shaft system 4 are respectively installed in the housing 5. The input shaft system 1 is the power input end of the speed increaser, the output shaft system 4 is the output end of the speed increaser, and the transition shaft system including the gear transmission transition shaft system 2 and the belt transmission transition shaft system 3 is the transition shaft for switching between belt drive and gear drive.

[0039] like Figure 2 and Figure 3 As shown, the input shaft system 1 includes an input shaft 101, a first electromagnetic clutch 102, a large pulley 103, a first belt 104, a second electromagnetic clutch 105, a large gear 106, an input shaft upper end bearing 107, a large pulley bearing 108, a large gear bearing 109 and an input shaft lower end bearing 110.

[0040] The input shaft 101 is a low-speed, through-shaft shaft. From top to bottom, it is fitted with an upper input shaft bearing 107, a first electromagnetic clutch 102, a large pulley bearing 108, a second electromagnetic clutch 105, a large gear bearing 109, and a lower input shaft bearing 110. The upper and lower input shaft bearings 107 and 110 are fixed to the upper and lower ends of the housing 5, respectively, ensuring stable rotation of the input shaft 101. The large pulley 103 is mounted on the input shaft 101 via the large pulley bearings 108 and is connected to the first electromagnetic clutch 102. The first belt 104 is an endless belt, one end of which is fitted around the large pulley 103 and the other end is fitted around the belt drive transition shaft 3. The second electromagnetic clutch 105 is connected to the large gear 106. When the first electromagnetic clutch 102 is energized, the large pulley 103 is connected to the input shaft 101 through the first electromagnetic clutch 102. Large gear 106 is mounted on input shaft 101 via large gear bearing 109 and meshes with gear-driven transitional shafting 2. When the second electromagnetic clutch 105 is energized, large gear 106 connects to input shaft 101 through the second electromagnetic clutch 105. When input shaft 101 rotates under the power of a power source (e.g., a motor), the first and second electromagnetic clutches 102, 105 are switched on and off, switching large pulley 103 and large gear 106 to rotate with input shaft 101, transmitting power to either belt-driven transitional shafting 3 or gear-driven transitional shafting 2.

[0041] The gear transmission transition shaft system 2 transmits the power of the input shaft system 1 to the output shaft system 4 through gear transmission, such as Figure 2 and Figure 3 As shown, the gear transmission intermediate shaft system 2 includes a gear transmission intermediate shaft 201, an intermediate gear 202, and an intermediate gear bearing 203. The upper and lower ends of the gear transmission intermediate shaft 201 are respectively mounted on the upper and lower ends of the housing 5 and are fixed thereto. The intermediate gear 202 includes a small intermediate gear and a large intermediate gear, which are coaxially arranged and integrally arranged above and below. The intermediate gear 202 is mounted on the gear transmission intermediate shaft 201 via the intermediate gear bearing 203. The small intermediate gear of the intermediate gear 202 meshes with the large gear 106 of the input shaft system 1, and the large intermediate gear meshes with the output shaft system 4.

[0042] The belt-driven transition shaft system 3 transmits the power of the input shaft system 1 to the output shaft system 4 through the belt drive. Figure 2 As shown, the belt-driven transition shaft system 3 includes a belt-driven transition shaft 301, a transition pulley 302, and a second belt 303. The belt-driven transition shaft system 3 is installed in a similar manner to the gear-driven transition shaft system 2. The upper and lower ends of the belt-driven transition shaft 301 are respectively fixed to the housing 5. The transition pulley 302 is composed of a small transition pulley and a large transition pulley coaxially arranged in an integral manner. The transition pulley 302 is mounted on the belt-driven transition shaft 301 through a bearing. The small transition pulley is connected to the large pulley 103 via the first belt 104, and the large transition pulley is connected to the output shaft system 4 via the second belt 303.

[0043] Alternatively, in another embodiment, the upper and lower ends of the gear-driven transition shaft 201 and the belt-driven transition shaft 301 are respectively mounted on the housing 5 via bearings, allowing the transition shafts to rotate. The transition gear 202 and the transition pulley 302 are directly mounted on the corresponding gear-driven transition shaft 201 and belt-driven transition shaft 301 and fixedly connected, i.e., the gear-driven transition shaft 201 rotates with the transition gear 202, and the belt-driven transition shaft 301 rotates with the transition pulley 302.

[0044] The output shaft system 4 is used to output power and has the same installation form as the input shaft system 1. Figure 2As shown, the output shaft system 4 includes an output shaft 401, a third electromagnetic clutch 402, a small pulley 403, a fourth electromagnetic clutch 404, and a pinion 405. The upper and lower ends of the output shaft 401 are mounted on the housing 5 via bearings. Within the housing 5, the third electromagnetic clutch 402, small pulley 403, fourth electromagnetic clutch 404, and pinion 405 are mounted, from top to bottom, on the output shaft 401. The third and fourth electromagnetic clutches 402 and 404 are each mounted on the output shaft 401. The third and fourth electromagnetic clutches 402 and 404 are each operated in concert with the first and second electromagnetic clutches 102, ensuring simultaneous rotation of the pulleys or gears. The small pulley 403 and pinion 405 are each mounted on the output shaft 401 via bearings. The connection between the second belt 303 and the output shaft system 4 is mounted on the small pulley 403. When the large pulley 103 rotates, the torque is transmitted to the small pulley 403 through the transition pulley 302, thereby driving the output shaft 401 to rotate at high speed. When the large gear 106 rotates, the torque is transmitted to the small gear 405 through the transition gear 202, thereby driving the output shaft 401 to rotate at high speed.

[0045] The housing 5 of this embodiment is the installation base and casing of the speed increasing gearbox. Figure 3 As shown, the housing 5 comprises a housing cover 501, an electromagnetic clutch mounting plate 502, a partition plate 503, a housing enclosure 504, and a housing bottom plate 505. The housing enclosure 504 is an annular structure, with the housing cover 501 and the housing bottom plate 505 mounted on its upper and lower ends, respectively. The housing cover 501 has upper mounting holes for mounting the top ends of the power source and the input shafting 1, gear drive transition shafting 2, belt drive transition shafting 3, and output shafting 4. The housing bottom plate 505 has lower mounting holes for mounting the bottom ends of the speed increaser's input shafting 1, gear drive transition shafting 2, belt drive transition shafting 3, and output shafting 4. The partition plate 503 is installed within the housing 5, dividing the interior of the housing 5 into an upper chamber and a lower chamber. The belt drive and gear drive are placed in the upper and lower chambers, respectively, separated by the partition plate 503, facilitating the design of the gear drive lubrication system. Electromagnetic clutch mounting plates 502 are installed on the left and right sides of the upper and lower chambers in the box body 5 respectively. The first electromagnetic clutch 102 , the second electromagnetic clutch 105 , the third electromagnetic clutch 402 and the fourth electromagnetic clutch 404 are connected to the box body 5 through the corresponding electromagnetic clutch mounting plates 502 .

[0046] In addition, two belt tensioning mechanisms may be provided on the box body 5 , and the first belt 104 and the second belt 303 are respectively passed through the belt tensioning mechanisms, and the tension of the belts is maintained by the belt tensioning mechanisms.

[0047] The housing 5 can also be a split structure, formed by combining two independent cavities up and down. A through hole is provided on the adjacent box wall of the two cavities, which is connected up and down and is used for the input shaft 101, the gear transmission transition shaft 201, the belt transmission transition shaft 301, and the output shaft 401 to pass through.

[0048] The first electromagnetic clutch 102 , the second electromagnetic clutch 105 , the third electromagnetic clutch 402 and the fourth electromagnetic clutch 404 have the same working principle and can adopt the same existing electromagnetic clutch. This embodiment takes the first electromagnetic clutch 102 as an example to illustrate the electromagnetic clutch structure.

[0049] The first electromagnetic clutch 102 is composed of two independent parts. Figure 4 The figure includes a clutch bearing 601 , a yoke 602 , a rivet 603 , a spring plate 604 , a bolt connection hole 605 , an armature 606 , a moving plate 607 , and a friction plate 608 .

[0050] The yoke 602, spring plate 604, armature 606, movable plate 607, and friction plate 608 are each annular structures. The yoke 602 is fixed to the housing 5 via the electromagnetic clutch mounting plate 502. The movable plate 607 overlaps the yoke 602 and is fixedly connected to the input shaft 101 via a key or spline. The clutch bearing 601 is installed between the yoke 602 and movable plate 607, ensuring that the yoke 602 remains stationary as the movable plate 607 rotates with the input shaft 101. The spring plate 604 is attached to the armature 606 via rivets 603. The friction plate 608 is mounted in the upper opening of the yoke 602, with the armature 606 positioned above the friction plate 608. Multiple bolt holes 605 are spaced apart on the spring plate 604. The spring plate 604 is bolted to the large pulley 103 through these bolt holes, ensuring a slight gap between the armature 606 and the movable plate 607 and friction plate 608. When the coil of the yoke 602 is energized, a magnetic field is generated, attracting the armature 606 and the friction plate 608. The friction between the armature 606 and the friction plate 608 transmits torque. At this time, the spring plate 604 is deformed and connects the armature 606 and the large pulley 103, so that the large pulley 103 rotates with the movable plate 607. Conversely, when the coil of the yoke 602 is deenergized, the magnetic field disappears, and the armature 606 is reset by the spring plate 604 and disengaged from the friction plate 608. The rotation of the movable plate 607 cannot be transmitted to the large pulley 103.

[0051] In the speed increaser of this embodiment, the power source (such as a motor) is connected to the input shaft 101 through a coupling, the gear transmission transition shaft system 2 is connected to the output shaft 401 through a gear transmission structure, and the belt transmission transition shaft system 3 is connected to the output shaft 401 through a belt transmission structure. The switching principle of the two power transmission modes of gear transmission and belt transmission is as follows:

[0052] When belt drive is used, the first electromagnetic clutch 102 and the third electromagnetic clutch 402 are energized, and the large pulley 103 and the small pulley 403 are connected to the corresponding first electromagnetic clutch 102 and the third electromagnetic clutch 402 respectively. At this time, the second electromagnetic clutch 105 and the fourth electromagnetic clutch 404 are in a power-off state, and the large gear 106 and the small gear 405 are disengaged from the corresponding second electromagnetic clutch 105 and the fourth electromagnetic clutch 404 respectively. At this time, under the action of the first electromagnetic clutch 102, the input shaft 101 drives the large pulley 103 to rotate, and drives the transition pulley 302 on the belt drive transition shaft 301 to rotate through belt drive, and then drives the small pulley 403 to rotate through belt drive. The small pulley 403 drives the output shaft 401 to rotate under the action of the third electromagnetic clutch 402, and the output shaft 401 drives the load rotor to rotate at high speed through the flexible shaft connection.

[0053] When switching to gear transmission, the second electromagnetic clutch 105 and the fourth electromagnetic clutch 404 are energized, the large gear 106 and the small gear 405 are connected to the corresponding second electromagnetic clutch 105 and the fourth electromagnetic clutch 404, the first electromagnetic clutch 102 and the third electromagnetic clutch 402 are de-energized, the large pulley 103 and the small pulley 403 are disengaged from the corresponding first electromagnetic clutch 102 and the third electromagnetic clutch 402 respectively. At this time, under the action of the second electromagnetic clutch 105, the input shaft 101 drives the large gear 106 to rotate, and the large gear 106 and the transition gear 202 are gear-transmitted to transfer the torque to the small gear 405 on the output shaft 401. Under the action of the fourth electromagnetic clutch 404, the small gear 405 drives the output shaft 401 to rotate, and the output shaft 401 drives the load rotor to rotate at high speed through the flexible shaft connection.

[0054] In addition, this embodiment can adjust the speed increase ratio of the speed increaser by replacing transition gears 202 and transition pulleys 302 of different sizes, and can also cancel the transition shaft system, use belts of corresponding specifications to connect the large pulley 103 and the small pulley 403, and use large gears 106 and small gears 405 of corresponding specifications to directly engage and connect.

[0055] Although the principles of the present invention have been described in detail above in conjunction with the preferred embodiments of the present invention, those skilled in the art should understand that the above embodiments are merely illustrative of the implementation of the present invention and are not intended to limit the scope of the present invention. The details in the embodiments do not constitute a limitation on the scope of the present invention. Without departing from the spirit and scope of the present invention, any obvious changes such as equivalent transformations and simple substitutions based on the technical solutions of the present invention fall within the scope of protection of the present invention.

Claims

1. A speed increasing gearbox, characterized in that: The speed increasing box comprises an input shaft system (1) and an output shaft system (4); The input shaft system (1) comprises an input shaft (101), a first electromagnetic clutch (102), a large pulley (103), a first belt (104), a second electromagnetic clutch (105), a large gear (106), a large pulley bearing (108), and a large gear bearing (109); the input shaft (101) is connected to a power source, the first electromagnetic clutch (102), the large pulley bearing (108), the second electromagnetic clutch (105), and the large gear bearing (109) are sequentially sleeved on the input shaft (101); the large pulley (103) is sleeved on the input shaft (101) through the large pulley bearing (108); the large pulley (103) is connected to the first electromagnetic clutch (102); the large gear (106) is sleeved on the input shaft (101) through the large gear bearing (109); the large gear (106) is connected to the second electromagnetic clutch (105); The output shaft system (4) includes an output shaft (401), a third electromagnetic clutch (402), a small pulley (403), a fourth electromagnetic clutch (404), and a small gear (405); the third electromagnetic clutch (402), the small pulley (403), the fourth electromagnetic clutch (404), and the small gear (405) are sequentially mounted on the output shaft (401), and the small pulley (403) and the small gear (405) are respectively mounted on the output shaft (401) through bearings; the small pulley (403) is connected to the third electromagnetic clutch (402), and the small gear (405) is connected to the fourth electromagnetic clutch (404); the output shaft (401) is connected to the load rotor; The large pulley (103) is connected to the small pulley (403) via the first belt (104); the large gear (106) is meshedly connected to the small gear (405); When the first electromagnetic clutch (102) and the third electromagnetic clutch (402) are energized, the input shaft (101) is connected to the output shaft (401) through the large pulley (103), the first belt (104) and the small pulley (403); when the second electromagnetic clutch (105) and the fourth electromagnetic clutch (404) are energized, the input shaft (101) is connected to the output shaft (401) through the large gear (106) and the small gear (405).

2. The speed increasing gearbox according to claim 1, characterized in that: The speed increaser further comprises a gear transmission transition shaft system (2) and a belt transmission transition shaft system (3); the input shaft (101) is meshedly connected to the gear transmission transition shaft system (2) via the large gear (106), and the gear transmission transition shaft system (2) is connected to the output shaft (401) via the small gear (405); the input shaft (101) is connected to the belt transmission transition shaft system (3) via the first belt (104), and the belt transmission transition shaft system (3) is connected to the small pulley (403) on the output shaft (401) via the second belt (303).

3. The speed increasing gearbox according to claim 2, characterized in that: The gear transmission transition shaft system (2) comprises a gear transmission transition shaft (201), a transition gear (202), and a transition gear bearing (203); the transition gear (202) is mounted on the gear transmission transition shaft (201) via the transition gear bearing (203); and the large gear (106) is meshedly connected with the small gear (405) via the transition gear (202).

4. The speed increasing gearbox according to claim 3, characterized in that: The transition gear (202) includes a small transition gear and a large transition gear that are coaxially arranged in an integral manner above and below; the large gear (106) is meshedly connected with the small transition gear, and the large transition gear is meshedly connected with the small gear (405).

5. The speed increasing gearbox according to claim 2, characterized in that: The belt-driven transition shaft system (3) further comprises a belt-driven transition shaft (301) and a transition pulley (302); the transition pulley (302) is mounted on the belt-driven transition shaft (301) via a bearing; the transition pulley (302) is connected to the large pulley (103) via the first belt (104), and the transition pulley (302) is connected to the small pulley (403) via the second belt (303).

6. The speed increasing gearbox according to claim 5, characterized in that: The transition pulley (302) is formed by a small transition pulley and a large transition pulley being coaxially arranged in an integral manner; the small transition pulley is connected to the large pulley (103) through the first belt (104), and the large transition pulley is connected to the small pulley (403) through the second belt (303).

7. The speed increasing gearbox according to claim 2, characterized in that: The speed increasing ratio of the speed increasing box is adjusted by replacing the gear transmission transition shaft system (2) and the belt transmission transition shaft system (3) of different sizes.

8. The speed increasing gearbox according to claim 1, characterized in that: The speed increasing box further comprises a box body (5), the box body (5) comprising a box body upper cover (501), an electromagnetic clutch mounting plate (502), a partition plate (503), a box body enclosure (504), and a box body bottom plate (505); the box body upper cover (501) and the box body bottom plate (505) are respectively mounted on the upper and lower ends of the box body enclosure (504); the partition plate (503) is mounted in the box body (5) to divide the inner cavity of the box body (5) into an upper cavity and a lower cavity; the left and right sides of the upper and lower cavities are respectively The electromagnetic clutch mounting plates (502) are respectively installed on the right two sides; the first electromagnetic clutch (102), the second electromagnetic clutch (105), the third electromagnetic clutch (402) and the fourth electromagnetic clutch (404) are connected to the box (5) through the corresponding electromagnetic clutch mounting plates (502); the upper and lower ends of the input shaft (101) and the output shaft (401) are respectively installed on the box cover (501) and the box bottom plate (505) through bearings.

9. The speed increasing gearbox according to claim 8, characterized in that: The input shaft system (1) further comprises an input shaft upper end bearing (107) and an input shaft lower end bearing (110); the upper and lower ends of the input shaft (101) are respectively mounted on the box upper cover (501) and the box bottom plate (505) via the input shaft upper end bearing (107) and the input shaft lower end bearing (110).

10. The speed increasing gearbox according to claim 8, characterized in that: The housing (5) is a split structure, consisting of two independent cavities assembled in an upper and lower manner; the first electromagnetic clutch (102), the second electromagnetic clutch (105), the third electromagnetic clutch (402) and the fourth electromagnetic clutch (404) are respectively installed in the housing (5) through an electromagnetic clutch mounting plate (502).

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