CN2816489Y

CN2816489Y - High-driving-ratio speed reducer

Info

Publication number: CN2816489Y
Application number: CNU2005200245486U
Authority: CN
Inventors: 樊世耀; 梁新文
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-07-23
Filing date: 2005-07-23
Publication date: 2006-09-13
Anticipated expiration: 2015-07-23

Abstract

The utility model relates to a speed reducer, particularly a high-driving-ratio speed reducer. The utility model solves the problems of small driving ratio, no reasonable structure of a lubricating oil passage, etc., of the existing speed reducer. The high-driving-ratio speed reducer contains a box body which is composed of a box seat and a box cover, and a driving mechanism which is arranged in the box body, wherein the inner of the box body is fixedly provided with an oil wiper which is matched with a middle gear; lubricating oil grooves which are used for holding the oil wiper are arranged on the box body, and the lubricating oil grooves are arranged on inner end surfaces of both sides of the upper part of the combination surface of the box cover; the driving mechanism is composed of four shafts and three-stage gears, and each herringbone gear in the driving mechanism is formed by that two included gears which are respectively processed are combined. The driving ratio of the speed reducer can reach about 90. The positions of the lubricating oil grooves on the box body are changed to make the structure of the lubricating oil passage more reasonable and avoid the problems of oil seepage and oil leakage of the existing speed reducer. A knife withdrawal groove is not arranged on the herringbone gear in the driving mechanism. The speed reducer has the advantages of high mechanical efficiency and small energy consumption. The speed reducer is particularly suitable for oil pumping machines which have a long stroke and a low stroke frequency in an oil field.

Description

The high transmission ratio retarder

Technical field

The utility model relates to retarder, is specially a kind of high transmission ratio retarder.

Background technique

In specific transmission application field, need the retarder of high transmission ratio as the long stroke on the oil field, low jig frequency pumping unit, and existing retarder gear range little (having only about 30) can't satisfy the requirement of specific application area to velocity ratio.For this reason, normally the input shaft of speed reducer end adopts the belt transmission of big speed ratio, reducing the input speed of retarder, but causes shortcomings such as belt energy consumption consumption high and belt self in the running is big like this.

Driving gear in the existing retarder mostly adopts herringbone gear, and the tool withdrawal groove in the middle of the herringbone gear mostly is 60-100 millimeter, waste material.

The casing of existing retarder is made of block and case lid, fill lubricant oil in the block, the wheel rim design that contains oilgear (being that the edge is positioned at one of following gear of lubricated pasta) in the retarder has special-purpose oil wiper, the oil groove that the lubricant oil that oil wiper is scraped from containing on the oilgear is sent on the casing to be opened, lubricant oil flows into the bearing of each axle head along oil groove, to realize bearing lubrication.Oil groove on the existing retarder is all opened on the junction plane of block and case lid, and the reduction case junction plane is prone to oil seepage at the shaft position, and pollutes retarder appearance, befouling environment.

Summary of the invention

The utility model solves problems such as existing retarder velocity ratio is little, lubricant oil road structure is very unreasonable, and a kind of improved high transmission ratio retarder is provided.

The utility model is to adopt following technological scheme to realize: the high transmission ratio retarder, comprise the casing that constitutes by block, case lid, driving mechanism in the casing by high speed shaft (four), two jack shafts (three, two), lower velocity shaft () and three grades of herringbone gears formations between each, the casing internal fixation has the oil wiper that cooperates with intermediate gear, have the oil groove of accepting oil wiper on the casing, oil groove leaves on the both sides interior edge face on case lid junction plane top.By changing the position of oil groove, the shaft position oil seepage phenomenon that can avoid existing retarder to occur on the junction plane of block and case lid owing to oil groove has makes retarder guarantee environmental protection from designing.

Behind the oil groove position change, keep continuous relationship for making oil wiper and oil groove, correspondingly oil wiper is fixed in the top in the case lid.Be fixed with mounting blocks at the case lid inner top, an end of connecting rod and mounting blocks is hinged, the other end and oil wiper are hinged.Oil wiper is connected and fixed by above-mentioned structure and case lid inner top, and oil wiper can be floated with the axially moving of gear, makes oil wiper along Gear axis enough degrees of freedom be arranged, and can guarantee to scrape sufficient lubricating oil, makes operation more reliable.

Each herringbone gear in the driving mechanism is formed by two helical gear combinations that process respectively.Like this, can not have tool withdrawal groove on the herringbone gear, improved the utilization ratio of material, improved the bearing capacity of retarder.

Retarder described in the utility model has adopted four, the driving mechanism of tertiary gear, has improved the velocity ratio of retarder greatly, and velocity ratio can reach about 90; Make retarder can realize high rotating speed input, can make the belt transmission of reducer input shaft side more be tending towards optimizing, the overall cost that high rotating speed is imported common vee belt or V-shape belt reduces by 60%, high rotating speed input makes the linear velocity height of vee belt or V-shape belt, the cornerite of band is big, and the radial effect power of input shaft also greatly reduces.Owing to changed the position of oil groove on casing, make the more reasonable structure of lubricating oil path, avoided the problem of existing retarder oil impregnate, leakage of oil.Do not have tool withdrawal groove (or the very little 6-8 millimeter of tool withdrawal groove) on the herringbone gear in the driving mechanism, not only improved the utilization ratio of material, and can make the bearing capacity of retarder improve 1.3 times.This retarder mechanical efficiency height, energy consumption is low, is specially adapted to oil field long stroke, low jig frequency pumping unit.

Description of drawings

Fig. 1 is the external structure schematic representation of retarder described in the utility model;

Fig. 2 is a kind of inner concrete structure schematic representation of retarder described in the utility model;

Fig. 3 is the another kind of inner concrete structure schematic representation of retarder described in the utility model;

Fig. 4 is the structural representation of the oil groove on the casing;

Fig. 5 is the A-A sectional drawing of Fig. 4;

Fig. 6 is the B-B sectional drawing of Fig. 4;

Fig. 7 is the C-C sectional drawing of Fig. 4;

Fig. 8 is the D-D sectional drawing of Fig. 4;

Fig. 9 is the fixed structure schematic representation of oil wiper;

Figure 10 is the sealed structural representation of low speed and high speed axle head;

Embodiment

The high transmission ratio retarder, comprise the casing that constitutes by block 1, case lid 2, driving mechanism in the casing by high speed shaft 3 (four), two jack shafts 4,5 (three, two), lower velocity shaft 6 () and three grades of herringbone gears formations between each, the casing internal fixation has the oil wiper 7 that cooperates with intermediate gear, have the oil groove 8 of accepting oil wiper on the casing, oil groove 8 leaves on the both sides interior edge face on case lid junction plane top.

Be fixed with mounting blocks 9 at case lid 2 inner tops, an end of connecting rod 10 and mounting blocks are 9 hinged, the other end and oil wiper 7 are hinged.The lubricant oil that oil wiper is scraped flows into oil groove and enters each required lubricant housings along oil groove, and high speed shaft bearing, lower velocity shaft bearing, midship shaft bearing are all forced to flow oil lubrication.Lubricant oil in the oil groove enters bearing and flows back to casing by the space that forms between primary seal 14, the pressure lubrication ring by pressure lubrication ring oil circuit 13.The axis hole bottom that goes out at high speed shaft 3 and lower velocity shaft 6 has backflow oilhole 15, flows back to casing from primary seal seepage a spot of lubricant oil of coming by backflow oilhole 15, further increases the sealing effect of lubricant oil with this.Secondary seal ring 16 is just dustproof and undertake seldom sealing.

Each herringbone gear in the driving mechanism is formed by two helical gear combinations that process respectively.

For reducing gear backlash, each herringbone gear adopts double circular arc tooth shape, like this, can make the gear backlash summation of gear backlash summation less than the secondary herringbone gear transmission of foreign advanced standard.Make this retarder be fit to drive the impact load.

Be provided with inspection hole cover 11 and inspection hole cover 12 at the case lid top.Inspection hole cover 11 is opened the mounting point that inspection hole cover 11 can be adjusted mounting blocks 9 again simultaneously both as inspection hole cover, to regulate the position of oil wiper.Inspection hole cover 12 is just just made inspection hole cover and is used.

This machine starting rear motor runs up, and approaching in input shaft rotational speed and motor speed, the rotor of motor, input shaft of speed reducer and all gears are all storing the mechanical energy of rotation.Mechanical kinetic energy is loss not.When being used for pumping unit, can store more energy during the pumping unit commutation.These energy play balanced action in the time of can commutating to pumping unit.The pumping unit moving system is under the steady state works.So during the commutation of pumping unit mechanical movement, the Peak current of motor is less than electric current under the rated condition.

The power transmission of retarder is to be delivered to lower velocity shaft 6 () from high speed shaft 3 (four) through shunting; Because each herringbone gear in the driving mechanism is formed by two helical gear combinations that process respectively, and therefore two power transfer routes are arranged, a power transfer route is to the 3e gear through four (high speed shaft) 4e gear transmission; The 3e gear is delivered to the 3c gear by three (jack shafts); The 3c gear transmission is to the 2c gear; The 2c gear is delivered to the 2a gear by two (jack shafts); The 2a gear transmission is to the 1a gear; One of 1a gear transmission (lower velocity shaft); One shaft power.Another power transfer route is to the 3f gear through four (high speed shaft) 4f gear transmission; The 3f gear is delivered to the 3d gear by three (jack shafts); The 3d gear transmission is to the 2d gear; The 2d gear is delivered to the 2b gear by two (jack shafts); The 2b gear transmission is to the 1b gear; One of 1b gear transmission (lower velocity shaft); One shaft power.

Claims

1, a kind of high transmission ratio retarder, comprise the casing that constitutes by block (1), case lid (2), driving mechanism in the casing by high speed shaft (3), two jack shafts (4,5), lower velocity shaft (6) and three grades of herringbone gears formations between each, the casing internal fixation has the oil wiper (7) that cooperates with intermediate gear, have the oil groove (8) of accepting oil wiper on the casing, it is characterized by: oil groove (8) leaves on the both sides interior edge face on case lid junction plane top.

2, high transmission ratio retarder as claimed in claim 1 is characterized by: be fixed with mounting blocks (9) at case lid (2) inner top, an end of connecting rod (10) and mounting blocks (9) are hinged, the other end and oil wiper (7) are hinged.

3, high transmission ratio retarder as claimed in claim 1 or 2 is characterized by: the axis hole bottom that goes out at high speed shaft (3) and lower velocity shaft (6) has backflow oilhole (15).

4, high transmission ratio retarder as claimed in claim 1 or 2 is characterized by: each herringbone gear in the driving mechanism is formed by two helical gear combinations that process respectively.

5, high transmission ratio retarder as claimed in claim 3 is characterized by: each herringbone gear in the driving mechanism is formed by two helical gear combinations that process respectively.

6, as claim 1 or 2 or 5 described high transmission ratio retarders, it is characterized by: each herringbone gear adopts double circular arc tooth shape.