Drive

Abstract

The present device relates to the field of transport systems and can be used for the forward and backward movement of loads or parts of lifting mechanisms, machinery and the like. The technical results are increased serviceability and reduced material content. A drive comprises a tooth and chain power pair of sprockets fastened to shafts, an endless power chain that forms loops, one of which is a power loop, and engages with said power pair of sprockets, a chain power sheave wheel, a pair of gears for transmitting torque via the shafts, the gear ratio of the tooth and chain power pair of sprockets and the pair of torque transmitting gears being other than unity, and a housing having power elements in which the shafts are fastened via bearings, wherein the tooth and chain power pair of sprockets is disposed between the power elements of the housing, the pair of torque transmitting gears is disposed outside the power elements of the housing, and the shafts are arranged at from 0º to 90º in relation to the power vector of the power loop.

Description

[0001] Drive

[0002] Field of technology

[0003] The proposed device relates to the field of transport systems, in particular, to differential mechanisms, and can be used for reciprocating movement of various objects, such as loads, parts of lifting mechanisms, working bodies of manipulators, parts of machine tools, etc.

[0004] State of the art

[0005] The following can be considered as analogues of lifting devices: UK Patent No. 15040 "Improvements in Blocks or Hoisting Gear" under IPC B 66 D 3 / 12 op. 28.09.1910; UK Patent No. 28215 "Improvements in Differential Hoisting and Lowering Apparatus" under IPC B 66 D 3 / 12 op. 14.01.1913; UK Patent No. 167648 "Improvements in Differential Pulley Blocks" under IPC B 66 D 3 / 12 op. 18.08.1921; and p. USSR for invention No. 1477668 "Hoist" under IPC B 66 D 3 / 12 op. 07.05.1989; Russian Federation patent for invention No. 2009047 "Hoist" under IPC B 66 D 3 / 12 op. 15.03.1994; Russian Federation patent for invention No. 2021971 "Hoist" under IPC B 66 D 3 / 12 op. 30.10.1994; Russian Federation patent for invention No. 2075194 "Hoist" under IPC B 66 D 3 / 12 op. 10.30.1997; Russian Federation patent for invention No. 2075195 "Hoist" under IPC B 66 D 3 / 12 op. 10.30.1997.; Patent Application of the People's Republic of China No. 104512829 under IPC B 66 D 3 / 12 op. 15.04.2015; Patent of the Russian Federation for Utility Model No. 184417 "Mounting Block" under IPC B 66 D 3 / 12 op. 24.10.2018; Patent of the Russian Federation for Utility Model No. 187922 "Mounting Block" under IPC B 66 D 3 / 12 op. 22.03.2019; Patent of the Russian Federation for Utility Model No. 188266 "Mounting Block" under IPC B 66 D 3 / 12 op. 04.04.2019; Russian Federation patent for utility model No. 188281 "Mounting block" under IPC B 66 D 3 / 12 op. 04.04.2019.

[0006] The following can be considered as analogues of reciprocating motion mechanisms: Russian Federation patent for invention No. 2075429 "Reciprocating motion mechanism" according to IPC B 66 C 11 / 12 op. 20.03.1997; Russian Federation patent for invention No. 2083469 "Reciprocating motion mechanism" according to IPC B 66 C 11 / 12 op. 10.07.1997.

[0007] The disadvantages of the above-described devices include reduced maintainability and increased material consumption of the structure.

[0008] The closest analogue to the proposed invention can be considered to be the Russian Federation patent for invention No. 2075194 "Hoist" under IPC B 66 D 3 / 12. published 10.30.1997.

[0009] The disadvantages of the closest analogue of the device include reduced maintainability and increased material consumption of the structure.

[0010] Disclosure of invention

[0011] The objective of the invention is to improve the design of a differential drive.

[0012] Technical results - increased maintainability and reduced material consumption of the structure.

[0013] The location of the load loop between the power parts of the housing allows to reduce the material consumption of the drive, and the removal of the part of the mechanism that transmits torque beyond the power part of the housing provides easy access to this part of the mechanism, which increases the maintainability of the drive.The technical results are achieved in that the drive comprises a toothed chain power pair of sprockets secured on shafts, an endless power chain forming at least two loops, at least one of which is a power loop and engaging with said power pair of sprockets, at least one chain power bypass block, and a toothed pair transmitting torque through said shafts, the gear ratio of said toothed chain power pair of sprockets and the toothed pair transmitting torque is not equal to one, a housing with power elements in which said shafts are secured via bearings, said toothed chain power pair of sprockets is located between said power elements of the housing, and said toothed pair transmitting torque is located outside of said power elements of the housing, said shafts are located from 0 to 90 degrees relative to the force vector of said power loop.

[0014] In a differential drive, the gear pair that transmits torque can be made in the form of gear wheels.

[0015] In a differential drive, the gear pair that transmits torque can be made in the form of a chain transmission.

[0016] In a differential drive, the gears that transmit torque can be supplemented by an idler gear.

[0017] In a differential drive, the chain drive transmitting torque may comprise at least one idler sprocket.

[0018] In a differential drive, the second loop of the endless power chain may contain at least one idler sprocket.

[0019] The differential drive may contain at least one additional chain bypass block.

[0020] Brief description of the drawings

[0021] Fig. 1 shows a diagram of a differential drive with a gear pair transmitting torque in the form of a chain drive and a shaft arrangement of 90 degrees relative to the force vector of the power loop.

[0022] Fig. 2 shows a diagram of a differential drive with a gear pair transmitting torque in the form of gear wheels and located in the direction of the force vector of the power loop and an additional bypass block on the second loop of the endless power circuit.

[0023] Fig. 3 shows a diagram of a differential drive with a gear pair with a parasitic gear wheel and a shaft arrangement of 90 degrees relative to the force vector of the power loop.

[0024] Fig. 4 shows a diagram of a differential drive with a gear pair transmitting torque in the form of a chain drive with a bypass sprocket, with a bypass sprocket for an endless power chain and a shaft arrangement between 0 and 90 degrees relative to the force vector of the power loop.

[0025] Implementation of inventions

[0026] The drive comprises a toothed chain power pair of sprockets 1 and 2 secured to shafts 3 and 4, an endless power chain 5 forming two loops, a power chain 6 and a second 7, the power chain 5 engages with the power sprockets 1 and 2, a chain power bypass block 8, a toothed pair 9 and 10 transmitting torque through shafts 3 and 4, the gear ratio of the toothed chain power pair of sprockets 1 and 2 and the toothed pair 9 and 10 transmitting torque is not equal to one, a housing with power elements 11 and 12 in which shafts 3 and 4 are secured through bearings 13, the toothed chain power pair of sprockets 1 and 2 is located between the power elements of the housing 11 and 12, and the toothed pair 9 and 10 transmitting torque is located outside the mentioned power elements of the housing 11 and 12. Shafts 3 and 4 can be located from 0 to 90 degrees relative to the force vector 14 of the power loop 6.In the embodiment of the gear pair 9 and 10, transmitting torque through shafts 3 and 4, in the form of a chain transmission, sprockets 9 and 10 are connected by a chain 15. In the embodiment of the gear pair 9 and 10, transmitting torque through shafts 3 and 4, in the form of gear wheels, an idler gear 16 can be used. In the embodiment of the gear pair 9 and 10, transmitting torque through shafts 3 and 4, in the form of a chain transmission, an idler sprocket 17 for chain 15 can be used. In the embodiment of the drive with the arrangement of shafts 3 and 4 between 0 and 90 degrees relative to the force vector 14 of the power loop 6 of chain 5, an idler sprocket 18 for chain 5 can be used. On one of the shafts 3 or 4 and on shaft 19 of the power bypass block 8, a seat can be made for the application torque.

[0027] Drive operation. Torque is applied to the seat of one of the shafts 3 or 4 or 19. The drive mechanism is set in rotation via chain 5, sprockets 1 and 2, shafts 3 and 4, gear pair 9 and 10. Due to the difference from the unit of gear ratio of sprockets 1 and 2 and gear pair 9 and 10, loops 6 and 7 of chain 5 change length - when the length of, for example, loop 6 is reduced, the length of loop 7 increases, accordingly, when the torque is reversed, the length of loop 6 increases and the length of loop 7 decreases.

Claims

1. A drive comprising a toothed chain power pair of sprockets secured to shafts, an endless power chain forming at least two loops, at least one of which is a power chain and engaging with said power pair of sprockets, at least one chain power bypass block, and a toothed pair transmitting torque through said shafts, the gear ratio of said toothed chain power pair of sprockets and the toothed pair transmitting torque is not equal to one, a housing with sludge elements in which said shafts are secured via bearings, characterized in that said toothed chain power pair of sprockets is located between said sludge elements of the housing, and said toothed pair transmitting torque is located outside of said power elements of the housing, said shafts are located from 0 to 90 radii relative to the force vector the mentioned power loop.

2. The drive according to item 1, characterized in that the gear pair transmitting torque is a barrel wheel.

3. The drive according to item 1, characterized in that the gear pair transmitting torque is a chain drive.

4. The drive according to item 2 is distinguished in that the gear wheels transmitting torque are equipped with a parasitic gear wheel.

5. A drive according to item 3, characterized in that the chain transmission transmitting torque contains at least one idler sprocket.

6. The drive according to item 1, characterized in that the second loop of the endless power chain contains at least one bypass sprocket.

7. The drive according to item 1, characterized in that it contains at least one additional bypass block.

Images