Reduction gear is a device that is designed to convert torque. There are worm, planetary and combined modifications. The engine with a gearbox is capable of operating at high speeds. The standard model consists of a shaft, pushers and gears. If necessary, a step-down device can be made independently.
Scheme of worm modification
The worm gear scheme includes a wide disk, next to which is a gear. The first pusher is located at the base of the gearbox. In this case, the coupling is attached to the front of the housing. To make the device yourself, first of all, a stand is cut out for the shaft. Next, you need to fix the disks. The latch is soldered last.
Assembling the planetary device
This reduction gear for an electric motor is different in that it uses a two-chamber box. Pushers for modifications are installed in different sizes. To make a device with your own hands,a wide block is being prepared. Next, it is important to install pushers. The clutch is directly fixed on the clamping spring.
Experts recommend turning the rack in advance and welding supports on it. The gear is fixed at the rear of the gearbox. The pressure plate is installed only with an emphasis. Clamps may be mounted with a roller mechanism. It should also be noted that there are many homemade modifications with additional stops that stabilize the shaft.
Spur gearboxes
Recently, a home-made cylindrical reduction gear has been actively used. With your own hands, the device can be made with a short and long shaft. In this case, the stops are installed in the rear of the case. Some devices are assembled with one gear. Before starting the installation of the part, a block is prepared for the disks. The gearbox shaft is fixed on the rack.
The holder is allowed to be made with an emphasis. Ball bearings are fixed at the base of the shaft. Pressure discs for models can be of different sizes. If we consider compact devices, then the spring should be installed with a small diameter. It should also be noted that the gears fit behind the shaft. The pushers should not come into contact with the disc. A cover is screwed into the front of the case.
Conical model drawings
This reduction gear can be made with longitudinal pushers. Drives are most often mounted on a short rack. A lever is installed to shift the clutch. Many modifications are assembled with a transitional holder. The shaft is fixed behind the rack. For adjustmenttension, a clutch is used. At the end of the work, it remains only to fix the cover. Geared motor capable of running at 50Hz.
Reviews about combined devices
Combined reduction gears are highly valued among professionals. If you believe the reviews, then the models are well suited for asynchronous motors. It is more expedient to use pushers from steel plates. Stops are used to install discs. The coupling for modifications is fixed behind the shaft. If you believe the reviews of experts, then the retainer can be cut out of a regular plate. It should also be noted that it is more expedient to install the cover with a screw clamp.
Modifications with one latch
It is very easy to make a reduction gear with your own hands. Pushers in this case must be installed under the stops. The box for modification can be selected as a single-chamber type. Gears are allowed to be used with a clamp. Pressure plates are installed with a roller mechanism. The pressure disk is fixed in front of the pusher. Use a hammer to install the spring. The clutch on the clutch is attached under the disc. Ball bearings are allowed to use different sizes.
Double clamp devices
Modifications for two clamps are added with a double chamber. In total, the assembly will require two disks. The clutch itself is selected with a support spring. Many experts say that it is more expedient to use U-shaped pushers. A lever is used to shift gears. If you believe the reviews of experts, then the gears need to be filled for a very long time. In this case, it is important to fix the shaft at the base of the chamber. At the end of the work, all that remains is to make a holder for the rollers.
Front Pushrod Models
Reduction gears for walk-behind tractors with front pushers are capable of maintaining high speeds of an asynchronous motor. Holders for modifications are installed with roller mechanisms. Many models fold with longitudinal stops. Before starting the assembly, a chamber for ball bearings is prepared. They are fixed on the bottom of the block. The driven disk is machined with a small diameter. It should also be noted that the stops are important to securely fix. A cover must be attached to the rear of the gearbox.
Rear tappet gearboxes
The rear pushrod reduction gear is in high demand. First of all, it should be noted that the models are compact. At the same time, the devices cope well with large overloads. The disadvantage of the models is the rapid wear of the disks. This happens due to the friction of the stops. If necessary, modification can be done by hand.
To this end, experts recommend preparing a narrow block, installing disks with a roller mechanism. It is more expedient to lay the gear after the pushers. It should also be noted that there are modifications with brake stops. The pushers in this case are fixed on the rack. To shift gears,install lever. After that, the drive disk is fixed. The cover for the gearbox can be selected with a screw connection. Pressure plates are usually fixed near the front pillar. Model holder suitable with or without stop. If you believe the reviews of experts, then the most popular are gearboxes for two pushers.
Reviews of one-stage modifications
Most experts speak positively about single-stage gearboxes. However, it is important to understand that high-quality models are assembled with transitional pushers. They use sharpened heads, they do not rub against the discs. It is more expedient to install the gearbox shaft behind the partition. The gear is most often fixed in front of the rack.
It should also be noted that there are compact modifications with a small shaft. They have small pressure discs, the device is not able to maintain high engine speeds. The holders are mounted in a cylindrical shape. Pressure plates are used with and without adapters. Rollers are used to reduce friction, and bearings are mounted at the base of the shaft. When assembling, it is important to pay special attention to the block. In order for the case to withstand heavy loads, it must be carefully soldered. At the end of the work, all that remains is to weld the lid.
Assembly of two-stage devices
Two-stage reduction gear is able to work with high power asynchronous motors. Modern models are produced with longitudinal pushers. If necessarya two-stage modification can be made independently. For this purpose, a block is taken and working disks are placed.
The shaft is important to carefully grind and solder a wide head. A small rod is used to fix the gear. The retainer is most often installed in the front of the gearbox. The stop can be machined from an ordinary steel plate of small thickness. The modification shaft must not come into contact with the working disks.
It should also be noted that the devices are folded with and without a clutch. If we consider the first option, then a clutch lever is installed in the block. In this case, the spring is selected with a small diameter. It is better to fix the pressure stop on the device box.
