CN216143140U - Gear structure of precision speed reducer - Google Patents

Abstract

The utility model discloses a gear structure of a precision speed reducer, which comprises a shell, wherein an input shaft is rotatably connected in the shell, two ends of the input shaft penetrate through the shell, two driving gears are sleeved on the input shaft, two thread sleeves are rotatably connected on the shell, a screw rod is connected in the thread sleeves in a threaded manner, and the lower end of the screw rod is fixedly connected with a frame matched with the driving gears. The utility model relates to the technical field of speed reducers, and the screw sleeve and a screw rod are matched, so that the screw rod is driven to lift by the screw sleeve through regulating and controlling the rotation of the screw sleeve, and further, a worker can butt joint a first driven gear or a second driven gear with a corresponding gear according to production requirements to adjust the transmission ratio, so that the convenience of the device is greatly improved, and the cost for additionally purchasing the speed reducer is avoided.

Description

Gear structure of precision speed reducer

Technical Field

The utility model belongs to the technical field of gears, and particularly relates to a gear structure of a precision speed reducer.

Background

The speed reducer is generally used for low-speed and large-torque transmission equipment, and the purpose of reducing speed is achieved by meshing a motor, an internal combustion engine or other high-speed running power with a large gear on an output shaft through a gear with a small number of teeth on an input shaft of the speed reducer. The traditional gears on the output shaft and the input shaft of the speed reducer are generally designed in a fixed mode, so that the speed reducer can only realize one transmission ratio and further can only realize one speed reduction mode, when equipment needs to realize another speed reduction mode, the speed reducer with another transmission ratio can only be purchased, inconvenience is brought to production operation, and meanwhile, the production operation cost is increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems and provides a gear structure of a precision speed reducer.

In order to achieve the purpose, the utility model adopts the following technical scheme:

the gear structure of the precision speed reducer comprises a shell, an input shaft is rotatably connected in the shell, two ends of the input shaft penetrate through the shell, the input shaft is sleeved with two driving gears, the shell is rotatably connected with two thread sleeves, and the screw in the thread sleeve is connected with a screw rod in a thread way, the lower end of the screw rod is fixedly connected with a frame matched with the driving gear, and the frame is rotatably connected with output shafts, the two output shafts are respectively sleeved with a first driven gear and a second driven gear, the inner top surface of the lower end of the shell is rotatably connected with a plurality of fans, a worm wheel is sleeved on a transmission shaft of the fan, a worm meshed with the worm wheel is rotatably connected in the shell, and a linkage mechanism is arranged between the worm and the input shaft, an open slot matched with the output shaft is formed in the shell, and one end of the output shaft penetrates through the open slot.

Preferably, the linkage mechanism comprises a driving wheel and a driven wheel, the driving wheel is sleeved on the input shaft, the driven wheel is sleeved on the worm, and the driven wheel and the driving wheel are in transmission through a synchronous belt.

Preferably, the frame is fixedly connected with a limiting rod, and the limiting rod is connected with the frame in a sliding manner.

Preferably, a plurality of air inlets are arranged on the side wall of the lower end of the shell, and filter screens are embedded in the air inlets.

Preferably, the lower extreme lateral wall of casing has a plurality of slide bars through a plurality of buffer spring fixedly connected with buffer board, and sliding connection has on the buffer board, the upper end and the casing fixed connection of slide bar, a plurality of triangle supporting seats of lower extreme lateral wall fixedly connected with of buffer board.

Preferably, the driven wheel is smaller in size than the driving wheel.

The utility model has the advantages that: through the cooperation of the thread bush and the screw rod that set up, can rotate through regulation and control thread bush for the thread bush drives the screw rod and goes up and down, and then makes the staff can dock first driven gear or second driven gear and the gear that corresponds according to the production needs, carries out the adjustment of drive ratio, and this has improved the convenience of device greatly, and has avoided purchasing the cost that the speed reducer increased in addition. Through setting up link gear for the worm can cooperate the synchronous rotation of input shaft, under the cooperation of each worm wheel, makes each fan can cooperate the synchronous rotation of input shaft, both can accelerate the air flow in the casing, improves the thermal diffusivity, has avoided adding the produced cost of drive arrangement in addition again.

Drawings

Fig. 1 is a schematic front perspective structural view of a gear structure of a precision reducer according to the present invention;

fig. 2 is an enlarged schematic view of a portion a in fig. 1.

In the figure: the device comprises a shell 1, an input shaft 2, a driving gear 3, a thread bush 4, a screw 5, a frame 6, an output shaft 7, a first driven gear 8, a second driven gear 9, a fan 10, a worm gear 11, a worm 12, a linkage mechanism 13, a driving wheel 131, a driven wheel 132, an open slot 14, a synchronous belt 15, a limiting rod 16, an air inlet 17, a filter screen 18, a buffer spring 19, a buffer plate 20, a sliding rod 21 and a triangular support seat 22.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

Referring to fig. 1-2, precision reducer gear structure, including casing 1, the lower extreme lateral wall of casing 1 is through a plurality of buffer spring 19 fixedly connected with buffer board 20, and sliding connection has a plurality of slide bars 21 on the buffer board 20, the upper end and the casing 1 fixed connection of slide bar 21, a plurality of triangle supporting seats 22 of lower extreme lateral wall fixedly connected with of buffer board 20, buffer board 20 and buffer spring 19's cooperation, the vibration that can buffer device operation in-process produced, slide bar 21 can be spacing to casing 1, avoid casing 1 to rock, triangle supporting seat 22 can give casing 1 stable support.

There is input shaft 2 in the casing 1 rotation connection, and the both ends of input shaft 2 all run through the setting of casing 1, two driving gears 3 have been cup jointed on the input shaft 2, it is connected with two thread bush 4 to rotate on the casing 1, and threaded connection has screw rod 5 in the thread bush 4, be provided with on the thread bush 4 and change the handle, in order that the convenience of customers rotates thread bush 4, screw rod 5 runs through and changes the setting, the lower extreme fixedly connected with and the 3 matched with frame 6 of driving gear of screw rod 5, and rotate on the frame 6 and be connected with output shaft 7, fixedly connected with gag lever post 16 on the frame 6, and gag lever post 16 and 6 sliding connection of frame, the setting of gag lever post 16, can carry on spacingly to screw rod 5, avoid screw rod 5 to follow thread bush 4 rotations.

First driven gear 8 and second driven gear 9 have been cup jointed on two output shafts 7 respectively, the lower extreme inner top surface of casing 1 rotates and is connected with a plurality of fans 10, and the worm wheel 11 has been cup jointed on fan 10's the transmission shaft, a plurality of inlet ports 17 have been seted up to casing 1's lower extreme lateral wall, and inlay in the inlet port 17 and be equipped with filter screen 18, the setting of inlet port 17, can cooperate the operation of fan 10 to admit air, filter screen 18 can avoid during external impurity gets into casing 1, rotate in the casing 1 and be connected with worm 12 with worm wheel 11 looks meshing, and be provided with link gear 13 between worm 12 and the input shaft 2.

The linkage mechanism 13 comprises a driving wheel 131 and a driven wheel 132, the driving wheel 131 is sleeved on the input shaft 2, the driven wheel 132 is sleeved on the worm 12, the driven wheel 132 and the driving wheel 131 are driven through a synchronous belt 15, linkage of the worm 12 and the input shaft 2 can be achieved through the matching of the driving wheel 131 and the driven wheel 132, the increased cost of the additionally-arranged driving device is avoided, an open slot 14 matched with the output shaft 7 is formed in the shell 1, one end of the output shaft 7 penetrates through the open slot 14, the size of the driven wheel 132 is smaller than that of the driving wheel 131, the size of the driven wheel 132 is designed, and the rotating speed of the fan 10 can be increased.

When the running speed of the equipment needs to be reduced, firstly, the threaded sleeve 4 corresponding to the first driven gear 8 is rotated by the rotating handle, under the action of the limiting rod 16, the threaded sleeve 4 can drive the screw rod 5 to slide downwards, the screw rod 5 can drive the first driven gear 8 to descend, when the first driven gear 8 is meshed with the corresponding driving gear 3, the rotating handle is stopped to rotate, then, the output shaft 7 corresponding to the first driven gear 8 is in transmission connection with the equipment, then, one end, far away from the first driven gear 8, of the output shaft 7 is in transmission connection with the motor, the motor is prevented from blocking the output shaft 7, then, the motor is started to decelerate the equipment needing to be driven, when the running speed of the equipment needs to be further reduced, firstly, the threaded sleeve 4 corresponding to the first driven gear 8 is reversely rotated by the rotating handle, and similarly, the screw rod 5 can drive the first driven gear 8 to ascend, so that the first driven gear 8 is separated from the driving gear 3, then, the threaded sleeve 4 corresponding to the second driven gear 9 is rotated through the rotating handle, and in the same way, the screw 5 can drive the second driven gear 9 to be meshed with the corresponding driving gear 3, then, one end, far away from the second driven gear 9, of the output shaft 7 is in transmission connection with the motor, then, the output shaft 7 of the second driven gear 9 is in transmission connection with the equipment, and further speed reduction can be performed on the equipment.

Claims (6)

1. A precise speed reducer gear structure comprises a shell (1) and is characterized in that an input shaft (2) is rotatably connected in the shell (1), two ends of the input shaft (2) penetrate through the shell (1) and are arranged, two driving gears (3) are sleeved on the input shaft (2), two thread sleeves (4) are rotatably connected on the shell (1), a screw (5) is connected in each thread sleeve (4) in a threaded manner, a frame (6) matched with the driving gears (3) is fixedly connected to the lower end of each screw (5), an output shaft (7) is rotatably connected on each frame (6), a first driven gear (8) and a second driven gear (9) are respectively sleeved on the two output shafts (7), a plurality of fans (10) are rotatably connected to the inner top surface of the lower end of the shell (1), and worm wheels (11) are sleeved on transmission shafts of the fans (10), the worm gear-driven mechanism is characterized in that a worm (12) meshed with a worm wheel (11) is rotatably connected into the shell (1), a linkage mechanism (13) is arranged between the worm (12) and the input shaft (2), an open slot (14) matched with the output shaft (7) is formed in the shell (1), and one end of the output shaft (7) penetrates through the open slot (14).

2. The gear structure of the precision reducer according to claim 1, wherein the linkage mechanism (13) comprises a driving wheel (131) and a driven wheel (132), the driving wheel (131) is sleeved on the input shaft (2), the driven wheel (132) is sleeved on the worm (12), and the driven wheel (132) and the driving wheel (131) are driven through a synchronous belt (15).

3. The precision reducer gear structure according to claim 1, characterized in that a limiting rod (16) is fixedly connected to the frame (6), and the limiting rod (16) is slidably connected to the frame (6).

4. The gear structure of the precision reducer according to claim 1, wherein a plurality of air inlets (17) are formed in the side wall of the lower end of the housing (1), and a filter screen (18) is embedded in each air inlet (17).

5. The gear structure of the precision reducer according to claim 1, wherein a buffer plate (20) is fixedly connected to the lower end side wall of the housing (1) through a plurality of buffer springs (19), a plurality of slide rods (21) are slidably connected to the buffer plate (20), the upper ends of the slide rods (21) are fixedly connected to the housing (1), and a plurality of triangular supports (22) are fixedly connected to the lower end side wall of the buffer plate (20).

6. A precision reducer gear structure according to claim 2, characterized in that the driven wheel (132) is smaller in size than the driving wheel (131).

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