CN202017746U

CN202017746U - Multi-gear reducer

Info

Publication number: CN202017746U
Application number: CN2011201205640U
Authority: CN
Inventors: 刘潮国
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-04-22
Filing date: 2011-04-22
Publication date: 2011-10-26
Anticipated expiration: 2021-04-22

Abstract

The utility model discloses a multi-gear reducer, which comprises a box body and an engine beside the box body, wherein a gear box body cover plate is arranged at the top of the box body; a reducing gear set is arranged in the box body and comprises a reducing gear as well as a gear input shaft and a gear output shaft which are meshed with the reducing gear; one end of the gear input shaft and one end of the gear output shaft respectively extend out the box body; an input gear wheel is arranged on the gear input shaft and is connected with the engine through a conveyor belt; bearings are respectively arranged at two ends of the gear output shaft; an oil seal is arranged at the crossed part between the gear output shaft and the box body; the gear output shaft is connected with a half shaft assembly through a coupling; and a gearbox base capable of protecting the gear output shaft is also arranged at the bottom of the box body. According to the reducer, by using the simple and convenient design of matching the coupling with the gear box cover with the gear box body cover plate as well as matching the lower end of the output shaft with the tolerance clearance of the coupling, the bearings and the oil seal can be flexibly replaced by detaching the box body cover plate when the gear output shaft is mounted or the output shaft bearings and the oil seal are replaced, and the multi-gear reducer is more convenient and accurate in the connection between main shafts in other mechanisms.

Description

A kind of multi-gear speed reducer

Technical field

The utility model relates to a kind of speed reducer, particularly a kind of installation, easy to use, the multi-gear speed reducer that applicability is good.

Background technique

Retarder is the independent gear that is used between motor and the working machine, is used for reducing rotating speed and increases torque, to satisfy need of work.Universal speed reducer commonly used is because can adapt to various instruments and more welcome, and wherein the structure of cylinder gear speed reducer is simpler, maintains more conveniently, and manufacture cost is lower and obtain extensive must the application.Because of the gear output shaft of retarder is furnished with bearing, again because of gear output shaft is to stretch out outside the casing, must be furnished with oil sealing equally for preventing leakage of oil, when equipment uses the regular hour, bearing on the gear output shaft and oil sealing all need to change.Because the output shaft that generally uses adopts flange coupling, oldham coupling, pin coupler etc. bottom at present, output shaft coupling bottom must be split out when changing bearing and oil sealing and could change bearing and oil sealing, owing to the instrument of universal speed reducer demand side to various models, size, use smoothly must be by coupling to realize the connection between main shaft in the different institutions simultaneously.Finishing this process must take cabinet base apart, again complete machine is put the dismounting that to be convenient to coupling to level, in the process of changing gear output shaft, can occur easily influencing the real work quality because of the connection deviation between main shaft even causing the accident, and because of multi-stage gear speed reducer complete machine quality very big, often reach 50kg-1500kg, so need special-purpose hanging device when changing bearing and oil sealing, also need dispose several maintenance mans, this is the place that needs improvement.

Summary of the invention

In order to overcome the deficiencies in the prior art, the utility model provides a kind of installation, easy to use, the multi-gear speed reducer that applicability is good.

The technological scheme that its technical problem that solves the utility model adopts is:

A kind of multi-gear speed reducer; comprise casing; the motor on casing next door; wherein the casing top is provided with the gear housing cover plate; be provided with train of reduction gears in the casing; this train of reduction gears comprises reduction gear; with reduction gear meshed gears input shaft; gear output shaft; wherein an end of gear input shaft and gear output shaft stretches out casing respectively; described gear input shaft is provided with the input gearwheel; this input gearwheel is connected with motor by line belt; the gear output shaft two ends are respectively arranged with bearing; described gear output shaft and casing intersection also are provided with oil sealing; gear output shaft is connected with the semiaxis assembly by coupling; described bottom half also is provided with the gear-box base that can protect gear output shaft; this gear-box base bottom is connected with the semiaxis assembly; more reliable and more stable when the protection gear output shaft simultaneously also makes work, when changing bearing or oil sealing, only need open the casing top the gear housing cover plate can and need not to take apart the gear-box base.

More convenient for the installation and maintenance that make speed reducer, be provided with axis hole in the described coupling, described axis hole one end is rectangular opening a, and the other end is rectangular opening b, and the lower end of gear output shaft is set to the shape that cooperates with the rectangular opening b of axis hole;

Safeguard the train of reduction gears in the speed reducer for convenience, described gear housing cover plate is provided with watch window.

The beneficial effects of the utility model are: this speed reducer is by coupling easy to use, gear box cover matches, with output shaft lower end and the design of Coupling Clearance tolerance fit, make and when gear output shaft being installed or changing output shaft bearing and oil sealing, need not to take apart cabinet base, can easily finish replacing bearing and oil sealing as long as take box cover apart, make its connection between main shaft in to other mechanism more convenient accurately, minimizing is because of installing the Accident due to quality that inaccuracy causes, and whole maintenance process only needs one or two personnel to get final product, not only shorten engineering time greatly and reduced working strength, also need not special-purpose hanging device, save artificial and time significantly, effectively reduce cost.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further specified.

Fig. 1 is a plan view of the present utility model;

Fig. 2 is the stereogram of the utility model coupling;

Fig. 3 is the plan view of the utility model gear housing cover plate.

Embodiment

With reference to Fig. 1; Fig. 2; a kind of multi-gear speed reducer; comprise casing 1; the motor 2 on casing 1 next door; described casing 1 top is provided with gear housing cover plate 12; casing is provided with train of reduction gears 3 for 1 li; this train of reduction gears 3 comprises reduction gear 31; with reduction gear 31 meshed gears input shafts 32; gear output shaft 33; wherein an end of gear input shaft 32 and gear output shaft 33 stretches out casing 1 respectively; described gear input shaft 32 is provided with input gearwheel 4; this input gearwheel 4 is connected with motor 2 by line belt 7; gear output shaft 33 two ends are respectively arranged with bearing 34; described gear output shaft 33 also is provided with oil sealing 35 with casing 1 intersection; gear output shaft 33 is connected with semiaxis assembly 6 by coupling 5; described casing 1 bottom also is provided with the gear-box base 11 that can protect gear output shaft 33; these gear-box base 11 bottoms are connected with semiaxis assembly 6; it is more reliable and more stable when protection gear output shaft 33 also makes work simultaneously; when changing bearing 34 or oil sealing 35, only need open casing 1 top gear housing cover plate 12 can and need not to take apart gear-box base 11.

Be provided with axis hole 51 in the described coupling 5, described axis hole 51 1 ends are rectangular opening a52, the other end is rectangular opening b53, the end that gear output shaft 33 stretches out casing 1 is set to the shape that cooperates with the rectangular opening b53 of axis hole 51, rectangular opening a52 one end then is used for cooperating semiaxis 61 in the installation different institutions, but slide relative between this coupling 5 and the gear output shaft 33, reduce the loaded down with trivial details structure of other coupling 5, do not need to use screw fastening more yet, it is easier not only to produce, use simpler, and the use deviation of avoiding the labyrinth because of coupling 5 to cause.

Safeguard the train of reduction gears 3 in the speed reducer for convenience, described gear housing cover plate 12 is provided with watch window 13, and the user needs only just can observe the working condition of train of reduction gears 3 very easily by watch window 13, and need not all to want shutdown inspection at every turn.

This speed reducer is by coupling 5 easy to use, gear housing cover plate 12 matches, with gear output shaft 33 lower ends and coupling 5 tolerance clearance matching design, make and when gear output shaft 33 being installed or changing bearing 34 and oil sealing 35, need not to take apart casing 1 base, can easily finish replacing bearing 34 and oil sealing 35 as long as take box cover 12 apart, make its connection between main shaft in to other mechanism more convenient accurately, minimizing is because of installing the Accident due to quality that inaccuracy causes, and whole maintenance process only needs the minority personnel to get final product, not only shorten engineering time greatly and reduced working strength, also need not special-purpose hanging device, save artificial and time significantly, effectively reduce cost.

Claims

1. multi-gear speed reducer; comprise casing (1); the motor (2) on casing (1) next door; it is characterized in that: described casing (1) top is provided with gear housing cover plate (12); casing (1) lining is provided with train of reduction gears (3); this train of reduction gears (3) comprises reduction gear (31); with reduction gear (31) meshed gears input shaft (32); gear output shaft (33); wherein an end of gear input shaft (32) and gear output shaft (33) stretches out casing (1) respectively; described gear input shaft (32) is provided with input gearwheel (4); this input gearwheel (4) is connected with motor (2) by line belt (7); gear output shaft (33) two ends are respectively arranged with bearing (34); described gear output shaft (33) also is provided with oil sealing (35) with the interior bottom extremity of casing (1) place; gear output shaft (33) is connected with semiaxis assembly (6) by coupling (5); described casing (1) bottom also is provided with the gear-box base (11) that can protect gear output shaft (33), and this gear-box base (11) bottom is connected with semiaxis assembly (6).

2. a kind of multi-gear speed reducer according to claim 1, it is characterized in that: be provided with axis hole (51) in the described coupling (5), described axis hole (51) one ends are rectangular opening a(52), the other end is rectangular opening b(53), the lower end of gear output shaft (33) is set to the rectangular opening b(53 with axis hole (51)) shape that cooperates.

3. a kind of multi-gear speed reducer according to claim 1 is characterized in that: described gear housing cover plate (12) is provided with watch window (13).