CN104948670B - A kind of dual input conversion equipment with auto-lock function - Google Patents

Abstract

The invention discloses a dual-input conversion device with self-locking function, which comprises a housing, a main drive input shaft, an auxiliary input shaft and an output shaft installed on the housing, a gear clutch, a drive wheel, Driven wheel 1, driven wheel 2, overrunning clutch, driven wheel 3, bevel gear, driven wheel 4, and drive wheel, the gear clutch is set between the main drive input shaft and the output shaft, and the gear clutch is moved left and right to make the The main transmission input shaft and output shaft are connected or disconnected, the transmission wheel is installed on the output shaft through bearings, and the driving wheel is installed on the auxiliary input shaft. The invention has the characteristics of high efficiency, good reliability and safe operation. Especially in water conservancy and hydropower projects in areas where power supply cannot be guaranteed and areas where earthquakes occur frequently. It can quickly and safely open and close the gate in the absence of power to ensure the safe operation of the power station. Not only has good economic benefits, but also has huge social benefits.

Description

A double-input switching device with self-locking function

technical field

The invention relates to an input conversion device for ensuring the normal operation of mechanical equipment with potential energy load characteristics, and is especially suitable for water conservancy and hydropower projects in areas where power supply cannot be guaranteed or where earthquakes occur frequently.

Background technique

The input conversion device is an important part of the mechanical system driven by two different input powers, and its reliability directly affects the function realization and operation safety of the mechanical equipment. During the operation of mechanical equipment with potential energy load characteristics, when a power failure occurs or the motor fails, manual or emergency input terminal operation measures must be taken to lift or lower the potential energy load to ensure safety.

At present, most of the existing mechanical equipment with important potential energy load characteristics are equipped with an emergency backup power supply. When a power failure occurs, the backup power supply is used instead. This method can ensure the normal operation of mechanical equipment with potential energy load characteristics in the event of a power outage in the normal power supply, and avoid accidents, but it cannot operate the potential energy load when the backup power supply system fails or the motor fails.

In addition, when a power failure occurs in the operating system, there are currently manpower or fuel-driven methods to operate the lifting or lowering of mechanical equipment with potential energy load characteristics. This method usually requires the configuration of a dual-input conversion device for electric drive and manpower or fuel drive. When the mechanical load is a potential energy load, the manpower or fuel drive input machinery must have a locking function to ensure the safety of personnel and equipment. Usually The locking function is realized by a worm and gear transmission with self-locking and low transmission efficiency and a ratchet device.

Due to the low efficiency of the worm gear with self-locking function, when the potential energy load is constant, to achieve normal working speed, the input power or torque is required to be relatively large, especially when it is driven by manpower, it is often beyond the range that manpower can afford. .

Generally, the ratchet device can only realize one-way locking. Even a two-way ratchet cannot realize two-way locking at the same time. It is necessary to switch between the two locking directions by changing the position of the ratchet. In this way, there will be potential safety hazards under the continuous working potential load.

The Chinese patent document with the publication number CN203614667U and the publication date of 2014-05-28 discloses a switching mechanism, which realizes switching between manual direction and high-low manual by controlling the meshing of input gears and different output gears. After the switching is completed, It has the function of state self-locking and provides different switching signals at the same time. Including conversion handle, pull rod, hand wheel, transition gear, gear A, chassis, output shaft A, pressure plate, switch mounting bracket, gear B, output shaft B, gear C, box body, compression spring A, bushing, connecting shaft and sleeves etc. The conversion mechanism has two meshing states: meshing state 1: the launching device is in the working condition of manual up and down direction and electric direction; meshing state 2: the launching device is in the working condition of manual direction. By controlling the meshing of the input gear and the output gear and the automatic insertion of the pin into the waist-shaped groove of the transition gear, the switch between the manual direction of the launch device and the high-low manual is realized; and the contacts of the micro switch are not in contact with the rotating parts, which improves the use of the switch life.

However, the existing conversion mechanisms represented by the above-mentioned patent documents cannot be directly applied to the input conversion of mechanical equipment with load characteristics of potential energy.

Contents of the invention

The purpose of the present invention is to address the defects and deficiencies of the above-mentioned prior art, and to provide an input conversion that can adapt to the potential energy load up or down when the power supply system fails or the motor fails, and has a self-locking function, which can ensure Input switching device for safe operation.

The present invention is achieved by adopting the following technical solutions:

A dual-input conversion device with self-locking function is characterized in that it includes a housing, a main transmission input shaft, an auxiliary input shaft and an output shaft installed on the housing, a gear clutch, a driving wheel, Driven wheel 1, driven wheel 2, overrunning clutch, driven wheel 3, bevel gear, driven wheel 4, and drive wheel, the gear clutch is set between the main drive input shaft and the output shaft, and the gear clutch is moved left and right to make the The main transmission input shaft and output shaft are connected or disconnected, the transmission wheel is installed on the output shaft through a bearing, the driving wheel is installed on the auxiliary input shaft, the driven wheel is installed in the housing through the driven shaft, and the driving wheel Mesh transmission with the first driven wheel, the second driven wheel is installed in the housing through the second driven shaft, and the two ends of the overrunning clutch are respectively connected with the first driven shaft and the second driven shaft, and the third driven wheel is installed through the third driven shaft In the casing, the driven wheel 2 is meshed with the driven wheel 3, the bevel gear and the driven wheel 4 are installed in the casing through the driven shaft 4, the driven wheel 3 is coaxially installed with the bevel gear, and the driven wheel 4 is meshed with the transmission wheel .

One end of the input shaft of the main drive protruding into the casing is provided with an internal tooth hole, and the transmission wheel is also provided with an internal tooth hole, and the gear clutch is connected to the output shaft through a spline, and the toggle piece on the gear clutch is toggled. , so that the external gear on the gear clutch meshes with the internal gear hole on the main transmission input shaft or the internal gear hole on the transmission wheel.

The main transmission input shaft, the auxiliary input shaft and the output shaft are all installed on the housing through bearings and bases.

The main drive input shaft is the motor input shaft.

Two ends of the auxiliary input shaft are connected with hand cranks.

Compared with the prior art, the beneficial effects achieved by the present invention are as follows:

1. In the present invention, by setting the active input shaft, auxiliary input shaft and output shaft, and then cooperating with the gear clutch and overrunning clutch, the active input shaft and the auxiliary input shaft cooperate with each other, which can realize the power supply from the active input shaft when there is electricity , and can ensure that when the power supply system fails or the motor fails, it can adapt to the input conversion of the potential energy load up or down operation. The overrunning clutch is used in the input conversion device of the mechanical equipment with potential energy load characteristics, and has a self-locking function. In summary, As mentioned above, the present invention has the characteristics of high efficiency, good reliability and safe operation. Especially in water conservancy and hydropower projects in areas where power supply cannot be guaranteed and areas where earthquakes occur frequently. It can quickly and safely open and close the gate in the absence of power to ensure the safe operation of the power station. Not only has good economic benefits, but also has huge social benefits.

2. In the present invention, the overrunning clutch is a clutch with the function of self-clutching by utilizing the speed change of the driving and driven parts or the transformation of the direction of rotation, also known as a backstop or a one-way bearing. It is used for overtaking or transmitting torque, precise positioning, and preventing reverse rotation. It is creatively applied to the input conversion device of mechanical equipment with potential energy load characteristics, so that the entire input conversion device has one-way self-locking reliability, reverse release is light, long life, and load-bearing. The characteristic of great ability.

3. In the present invention, by adopting the driving wheel, the first driven wheel, the second driven wheel, the third driven wheel, the bevel gear, the fourth driven wheel and the transmission wheel, each gear cooperates with each other, and the bevel gear realizes turning the transmission direction, and the bevel gear Cooperating with other gears makes the entire conversion device compact in structure and ingenious in design, and the main transmission input shaft and auxiliary input shaft are staggered in space, which is convenient to reserve enough space for the actual operation of the hand crank.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments of the description, wherein:

Fig. 1 is a front view of the present invention;

Fig. 2 is the left view of the present invention;

Fig. 3 is a structural schematic diagram of the present invention.

Marked in the figure:

1. Main drive input shaft, 2. Gear clutch, 3. Output shaft, 4. Driven wheel four, 5. Toggle member, 6. Bevel gear, 7. Overrunning clutch, 8. Auxiliary input shaft, 9. Housing, 10, driving wheel, 11. driven wheel one, 12. driven wheel two, 13. driven wheel three, 14, hand crank, 15, drive wheel, 16, internal tooth hole.

detailed description

Example 1

With reference to the drawings in the description, the present invention discloses a dual-input conversion device with self-locking function, including a housing 9, a main transmission input shaft 1, an auxiliary input shaft 8 and an output shaft 3 installed on the housing 9, installed on the Gear clutch 2, driving wheel 10, driven wheel one 11, driven wheel two 12, overrunning clutch 7, driven wheel three 13, bevel gear 6, driven wheel four 4 and transmission wheel 15 in the housing 9, the main transmission input The gear clutch 2 is arranged between the shaft 1 and the output shaft 3, and the gear clutch 2 is toggled left and right to connect or disconnect the main transmission input shaft 1 and the output shaft 3, and the transmission wheel 15 is installed on the output shaft through a bearing 3, the driving wheel 10 is installed on the auxiliary input shaft 8, the driven wheel 11 is installed in the housing 9 through the driven shaft 1, the driving wheel 10 is engaged with the driven wheel 11 for transmission, and the driven wheel 12 passes through The driven shaft two is installed in the housing 9, and the two ends of the overrunning clutch 7 are respectively connected with the driven shaft one and the driven shaft two, the driven wheel three 13 is installed in the housing 9 through the driven shaft three, and the driven wheel two 12 meshes with the driven wheel 3 13 for transmission, the bevel gear 6 and the driven wheel 4 4 are installed in the housing 9 through the driven shaft 4, the driven wheel 3 13 is coaxially installed with the bevel gear 6, the driven wheel 4 4 and the transmission wheel 15 mesh transmission.

Example 2

On the basis of the above-mentioned embodiments, a better embodiment of the present invention is that one end of the main transmission input shaft 1 extending into the housing 9 has an internal tooth hole, and the transmission wheel 15 is also provided with an internal tooth hole, and The gear clutch 2 is connected to the output shaft 3 by a spline, so that the gear clutch can move axially on the output shaft. The external gear meshes with the internal tooth hole on the main transmission input shaft 1 or the internal tooth hole on the transmission wheel 15, which realizes the connection or disconnection of the main transmission input shaft and the output shaft, and also realizes Auxiliary input shaft and output shaft connection or disconnection. The main transmission input shaft 1 , auxiliary input shaft 8 and output shaft 3 are all installed on the housing 9 through bearings and bases. The main transmission input shaft 1 is a motor input shaft. Two ends of the auxiliary input shaft 8 are connected with a hand crank 14 .

In the normal working state, the main transmission input is the main input, and the input conversion operating handle is on the main transmission access side; the auxiliary input shaft 8, the power passes through the auxiliary input shaft 8, and is connected in parallel with the overrunning clutch 7, and passes through the gear pair to the output shaft 3; emergency In the working state, the parallel overrunning clutch 7 plays the role of motion safety control, that is, if there is no auxiliary power input, the overrunning clutch 7 will play a role in the control mechanism and will not drop due to the force of the potential energy load. If the auxiliary input shaft 8 has input, the reversible The overrunning clutch 7 does not work, and the relevant mechanical mechanism can control the potential energy load to rise or fall thereupon.

A dual-input conversion device with self-locking function of the present invention relies on the overrunning clutch 7 and the conversion device to realize the function of mutual conversion between the normal electric drive system and the accident auxiliary input shaft 8; during the operation of the clutch unit, it should be ensured that the switching process does not At the same time, it is disengaged from the active and standby input elements to ensure safety; the overrunning clutch 7 is used in the transmission system, which has the advantages of high efficiency and reliable operation.

After comparative analysis, a dual-input conversion device with self-locking function is adopted. When the motor is driven, the toggle member 5 makes the shift fork of the gear clutch 2 go to the high-speed position and locks it. Axis 3 is connected to drive the gate to open and close. At this moment, the hand crank mechanism (i.e. the auxiliary input shaft 8) is disengaged from the output shaft 3. In the event of a power failure or motor failure, manual drive is used, the toggle member 5 makes the clutch shift fork go to the low gear position and locks, the input shaft 1 of the main drive is disengaged from the output shaft 3, and the manual mechanism (that is, the auxiliary input shaft 8 ) is connected with the output shaft 3 through the overrunning clutch 7.

The overrunning clutch 7 is a clutch with a self-clutching function utilizing the speed change of the main and driven parts or the transformation of the rotation direction. Also known as backstop or one-way bearing. It is used for overtaking or transmitting torque, precise positioning, and preventing reverse rotation. It has the characteristics of reliable one-way self-locking, convenient reverse release, long life and large carrying capacity.

The input of the hand shaft can drive the output shaft 3 to rotate forward and reverse through the driving end of the overrunning clutch 7 to open and close the gate. And the potential energy load of gate acts on the driven end of overrunning clutch 7 and is locked, and at this moment overrunning clutch 7 plays the effect of brake.

Claims (5)

1. A dual-input conversion device with self-locking function, characterized in that it includes a housing (9), a main transmission input shaft (1), an auxiliary input shaft (8) and an output shaft installed on the housing (9). Shaft (3), gear clutch (2), driving wheel (10), driven wheel one (11), driven wheel two (12), overrunning clutch (7), driven wheel three ( 13), bevel gear (6), driven wheel four (4) and transmission wheel (15), the gear clutch (2) is set between the main transmission input shaft (1) and output shaft (3), and the left and right dial The moving gear clutch (2) connects or disconnects the main transmission input shaft (1) and the output shaft (3), the transmission wheel (15) is mounted on the output shaft (3) through a bearing, and the driving wheel (10 ) is installed on the auxiliary input shaft (8), the driven wheel one (11) is installed in the housing (9) through the driven shaft one, and the driving wheel (10) is meshed with the driven wheel one (11) for transmission, The second driven wheel (12) is installed in the casing (9) through the second driven shaft, and the two ends of the overrunning clutch (7) are respectively connected with the first driven shaft and the second driven shaft, and the third driven wheel (13) is The driving shaft three is installed in the casing (9), the driven wheel two (12) is meshed with the driven wheel three (13) for transmission, the bevel gear (6) and the driven wheel four (4) are installed in the casing through the driven shaft four In the body (9), the driven wheel three (13) is coaxially installed with the bevel gear (6), and the driven wheel four (4) is meshed with the drive wheel (15) for transmission. 2. A dual-input conversion device with self-locking function according to claim 1, characterized in that: one end of the main transmission input shaft (1) protruding into the casing (9) is provided with an inner gear hole, and the transmission The wheel (15) is also provided with an internal tooth hole, and the gear clutch (2) is connected to the output shaft (3) through a spline, and the toggle piece (5) on the gear clutch (2) is moved to make the gear clutch (2) The external gear on the gear clutch (2) meshes with the internal tooth hole on the main transmission input shaft (1) or the internal tooth hole on the transmission wheel (15). 3. A dual-input conversion device with self-locking function according to claim 1, characterized in that: the main transmission input shaft (1), auxiliary input shaft (8) and output shaft (3) are all passed through Bearing and base mount on housing (9). 4. A dual-input conversion device with self-locking function according to claim 1, characterized in that: the main transmission input shaft 1 is an electric motor input shaft. 5. The dual-input conversion device with self-locking function according to claim 1, characterized in that: a hand crank (14) is connected to both ends of the auxiliary input shaft (8).