CN204878545U - Improved motor reducer - Google Patents

Abstract

The utility model discloses an improvement type motor reducer, it includes quick-witted case, installs input shaft and output shaft and speed reduction drive mechanism on quick-witted case, and speed reduction drive mechanism includes: the worm and the main driving shaft are arranged in the case and sleeved on the output shaft, and one end of the main driving shaft extends out of the case and is used as an input shaft; the worm is provided with spiral teeth, the corresponding surfaces of the first worm wheel disc and the second worm wheel disc are provided with a plurality of corresponding first rollers and second rollers, and the spiral teeth of the worm are embedded between the first rollers and the second rollers. The utility model discloses the during operation is earlier through the input shaft connecting motor, and motor drive input shaft rotates and the main drive axle rotates simultaneously, and main drive axle drive worm rotates, and the worm drives first, second worm wheel dish when the pivoted and rotates, and first, second worm wheel dish drive output shaft rotates, finally plays the effect of good matching rotational speed and transmission torque, and driven stability preferred.

Description

Improved motor reducer

Technical field:

The utility model relates to the technical field of reducers, in particular to an improved motor reducer.

Background technique:

The reducer is a kind of transmission, which is generally used for low-speed and high-torque transmission equipment. The principle is to use the electric motor, internal combustion engine, motor or other high-speed running power to mesh the gear with a small number of teeth on the input shaft of the reducer with the gear on the output shaft. The large gear, so as to achieve the purpose of deceleration; the ratio of the number of teeth of the large and small gears is the transmission ratio. The reducer is often used as a reduction transmission device between the prime mover and the working machine. It plays the role of matching speed and transmitting torque between the prime mover and the working machine or the actuator, and is widely used in modern machinery.

The reducer in the prior art generally includes: a casing, an input shaft and an output shaft installed on the casing, and a reduction transmission mechanism installed in the casing and connected between the input shaft and the output shaft. The structure of the reduction transmission mechanism is extremely Simple, resulting in poor transmission stability, and the effect of matching speed and transmission torque is not ideal; The effect is relatively ideal, but its production cost is high, which is not conducive to maintenance.

In view of this, the inventor proposes the following technical solutions.

Utility model content:

The purpose of the utility model is to overcome the deficiencies of the prior art and provide an improved motor reducer.

In order to solve the above-mentioned technical problems, the utility model adopts the following technical scheme: the improved motor reducer includes: a chassis, an input shaft and an output shaft installed on the chassis, and a shaft installed in the chassis and connected to the input shaft and the output shaft Between the reduction transmission mechanism, the reduction transmission mechanism includes: installed in the chassis and sleeved on the output shaft of the first and second worm gears, connected with the first and second worm gears and used to drive the first and second worm gears The worm that the two worm gears rotate at the same time and the main drive shaft used to drive the worm shaft, one end of the main drive shaft protrudes outside the chassis, and serves as the input shaft; the worm is provided with helical teeth, the first A plurality of corresponding first rollers and second rollers are respectively provided on the corresponding surface of the second worm wheel, and the helical teeth on the worm are embedded between the first rollers and the second rollers and move in unison.

Furthermore, in the above technical solution, the first and second worm wheel discs are stably connected through sleeves fitted with bolts and nuts, wherein the two ends of the sleeve are in conflict with the end surfaces of the first and second worm wheel discs respectively. .

Further, in the above technical solution, the first roller is arranged on the periphery of the lower end of the first worm wheel, and the first rollers are distributed in a circle; the second roller is arranged on the periphery of the lower end of the second worm wheel, and The second rollers are distributed around the circumference.

Further, in the above technical solution, the first rollers in the first worm wheel and the second rollers in the second worm wheel are distributed alternately, and a gap is formed between adjacent first rollers and second rollers. Space for the helical teeth on the worm to closely engage.

Furthermore, in the above technical solution, the main drive shaft is provided with a main helical gear, and one end of the worm is provided with an auxiliary helical gear, and the auxiliary helical gear meshes with the main helical gear.

Furthermore, in the above technical solution, one end of the main drive shaft is provided with the first and second bearings, the other end of the main drive shaft is provided with the third and fourth bearings, and the middle part of the main drive shaft is provided with the first shaft The sleeve seat, the first and second bearings, the third and fourth bearings and the first shaft sleeve seat are fixed in the machine case.

Furthermore, in the above technical solution, first and second stepped grooves are provided in the chassis, and the first and second bearings are fixedly installed in the first stepped grooves; the third and fourth bearings are fixed Installed in the second stepped groove.

Further, in the above technical solution, the other end of the worm that is installed on the auxiliary helical gear is provided with a fifth bearing, and the worm is also provided with a second sleeve seat, and the second sleeve seat is located on the auxiliary helical gear. between the helical teeth.

After adopting the above-mentioned technical scheme, the utility model has the following beneficial effects compared with the prior art: when the utility model works, the motor is first connected through the input shaft, and the motor drives the input shaft to rotate, that is to say, the motor drives the motor in the reduction transmission mechanism. The main drive shaft rotates, and the main drive shaft drives the auxiliary helical gear to rotate through the main helical gear to cause the worm to rotate. When the worm rotates, it drives the first and second worm wheel discs to rotate through the helical teeth, and the first and second worm gears rotate. The disk drives the output shaft to rotate, which finally plays a role in matching the rotation speed and transmitting torque well, and the transmission stability in the whole process is better. In addition, the utility model has a relatively simple structure, high transmission precision and efficiency, and is convenient for maintenance.

Description of drawings:

Fig. 1 is a structural representation of the utility model;

Fig. 2 is an assembly diagram of the first and second worm wheel discs and the worm in the utility model.

Detailed ways:

Below in conjunction with specific embodiment and accompanying drawing, the utility model is further described.

As shown in Figure 1-2, it is an improved motor reducer, which includes: a chassis 1, an input shaft 2 and an output shaft 3 installed on the chassis 1 and installed in the chassis 1 and connected to the input shaft 2 and the The reduction transmission mechanism 4 between the output shafts 3, and the input shaft 2 and the output shaft 3 are arranged perpendicular to each other so as to meet some special transmission requirements.

The reduction transmission mechanism 4 includes: first and second worm wheel discs 41, 42 installed in the chassis 1 and sleeved on the output shaft 3, connected with the first and second worm wheel discs 41, 42 and used to drive the first , the worm 43 that the second worm wheel disc 41, 42 rotates simultaneously and the main drive shaft 44 that is used to drive the rotating shaft of the worm 43, one end of the main drive shaft 44 protrudes outside the cabinet 1, and serves as the input shaft 2; The worm 43 is provided with helical teeth 431, and the surfaces corresponding to the first and second worm wheels (41, 42) are respectively provided with a plurality of corresponding first rollers 411 and second rollers 421. The helical teeth on the worm 43 The teeth 431 are embedded between the first roller 211 and the second roller 221 and move in unison.

The first and second worm wheel discs 41 and 42 are stably connected through sleeves 45 and bolts and nuts, wherein both ends of the sleeve 45 are in contact with the end surfaces of the first and second worm wheel discs 41 and 42 respectively.

The first roller 411 is arranged on the periphery of the lower end of the first worm wheel 41, and the first rollers 411 are distributed in a circle; the second roller 421 is arranged on the periphery of the lower end of the second worm wheel 42, and the second roller Sub 421 is distributed by circumference. In addition, the first rollers 411 in the first worm wheel disc 41 and the second rollers 421 in the second worm wheel disc 42 are alternately distributed, and a supply space is formed between adjacent first rollers 411 and second rollers 421 . The space where the helical teeth 431 on the worm 43 closely interfere.

Because the first and second worm wheel discs 41, 42 form a seamless connection with the helical teeth 421 on the worm 42 through the rollers 411, 421 at their lower ends, and form backlash-free transmission, the worm 42 and the first and second The transmission between the two worm wheel discs is more stable, so as to improve the transmission precision and transmission efficiency of the utility model.

The main drive shaft 44 is provided with a main helical gear 441 , and one end of the worm 43 is provided with an auxiliary helical gear 432 , the auxiliary helical gear 432 meshes with the main helical gear 441 so that the main drive shaft 44 can drive the worm 43 to rotate.

One end of the main drive shaft 44 is provided with first and second bearings 442, 443, the other end of the main drive shaft 44 is provided with third and fourth bearings 444, 445, and the middle part of the main drive shaft 44 is provided with a first shaft The sleeve 446 , the first and second bearings 442 , 443 , the third and fourth bearings 444 , 445 and the first shaft sleeve 446 are fixed in the case 1 . Specifically, the chassis 1 is provided with first and second stepped grooves, and the first and second bearings 442, 443 are fixedly installed in the first stepped grooves, and the structure of the first stepped grooves has a leak-proof The effect of oil: the third and fourth bearings 444, 445 are fixedly installed in the second stepped groove, and the structure of the second stepped groove also has the effect of preventing oil leakage.

The other end of the worm 43 that is installed on the auxiliary helical gear 432 is provided with a fifth bearing 433, and the worm 43 is also provided with a second sleeve seat 434, and the second sleeve seat 434 is located between the auxiliary helical gear 432 and the screw. Between the teeth 431. The worm 43 is installed in the casing through the fifth bearing 433 and the second sleeve seat 434, which can improve the rotation stability of the worm 43 to have better transmission stability.

When the utility model works, the motor is first connected to the motor through the input shaft 2, and the motor drives the input shaft to rotate, that is to say, the motor drives the main drive shaft in the reduction transmission mechanism 4 to rotate, and the main drive shaft drives the secondary helical gear through the main helical gear The worm rotates to promote the rotation of the worm, and the worm drives the first and second worm wheels to rotate through the helical teeth while the worm rotates, and the first and second worm wheels drive the output shaft to rotate, and finally achieve a good matching speed and transmission speed The role of the moment, and the stability of the transmission is better in the whole process. In addition, the utility model has a relatively simple structure, high transmission precision and efficiency, and is convenient for maintenance.

Of course, the above descriptions are only specific embodiments of the utility model, and are not intended to limit the implementation scope of the utility model. Should be included in the utility model patent scope.

Claims (8)

1. Improved motor reducer, which includes: a chassis (1), an input shaft (2) and an output shaft (3) installed on the chassis (1), and an input shaft (3) installed in the chassis (1) and connected to the input shaft ( 2) The speed reduction transmission mechanism (4) between the output shaft (3) is characterized in that: The reduction transmission mechanism (4) includes: the first and second worm wheel discs (41, 42) installed in the chassis (1) and sleeved on the output shaft (3), and the first and second worm wheel discs ( 41, 42) are connected and used to drive the worm (43) that the first and second worm gear discs (41, 42) rotate simultaneously and the main drive shaft (44) used to drive the rotation shaft of the worm (43), the main drive shaft ( 44) One end protrudes from the case (1) and serves as the input shaft (2); the worm (43) is provided with helical teeth (431), and the first and second worm wheels (41, 42 ) are respectively provided with a plurality of corresponding first rollers (411) and second rollers (421), and the helical teeth (431) on the worm (43) are embedded in the first rollers (211) and the second rollers (421). between the second rollers (221) and move together. 2. A motor reducer according to claim 1, characterized in that: the first and second worm gears (41, 42) are connected through sleeves (45) with bolts and nuts to form a stable connection, Wherein, the two ends of the sleeve (45) are in conflict with the end surfaces of the first and second worm wheel discs (41, 42) respectively. 3. A motor reducer according to claim 1, characterized in that: the first roller (411) is arranged on the periphery of the lower end of the first worm wheel (41), and the first roller (411) is pressed Circumferential distribution; the second rollers (421) are arranged on the periphery of the lower end of the second worm wheel (42), and the second rollers (421) are distributed in a circular manner. 4. A motor reducer according to claim 3, characterized in that: the first roller (411) in the first worm wheel (41) and the second roller in the second worm wheel (42) The rollers (421) are distributed in a staggered manner, and a space is formed between adjacent first rollers (411) and second rollers (421) for tight contact of the helical teeth (431) on the worm (43). 5. A motor reducer according to any one of claims 1-4, characterized in that: the main drive shaft (44) is provided with a main helical gear (441), and one end of the worm (43) is provided There is a secondary helical gear (432) which meshes with the primary helical gear (441). 6. A motor reducer according to any one of claims 1-4, characterized in that: one end of the main drive shaft (44) is provided with first and second bearings (442, 443), the main drive The other end of the shaft (44) is provided with third and fourth bearings (444, 445), and the middle part of the main drive shaft (44) is provided with a first sleeve seat (446), and the first and second bearings (442, 443), the third and fourth bearings (444, 445) and the first shaft sleeve seat (446) are fixed in the cabinet (1). 7. A motor reducer according to claim 6, characterized in that: first and second stepped grooves are arranged in the casing (1), and the first and second bearings (442, 443) are fixed installed in the first stepped groove; the third and fourth bearings (444, 445) are fixedly installed in the second stepped groove. 8. A motor reducer according to claim 6, characterized in that: the other end of the worm (43) opposite to the auxiliary helical gear (432) is provided with a fifth bearing (433), and the worm (43) 43) is also provided with a second bushing seat (434), and the second bushing seat (434) is located between the secondary helical gear (432) and the helical tooth (431).