CN201354637Y

CN201354637Y - Cutting speed reducer of coal mine development machine

Info

Publication number: CN201354637Y
Application number: CN 200920063199
Authority: CN
Inventors: 刘波
Original assignee: ZHUZHOU CHINA-SWELL INDUSTRY Co Ltd
Current assignee: ZHUZHOU JIUZHOU TRANSMISSION MACHINERY EQUIPMENT CO., LTD.
Priority date: 2009-02-11
Filing date: 2009-02-11
Publication date: 2009-12-02
Anticipated expiration: 2019-02-11

Abstract

The utility model relates to a cutting speed reducer of coal mine development machine, which comprises a box body, an input shaft, and a planet speed reducing assembly which is arranged in the box body and is linked with the input shaft, wherein the input shaft is connected with a motor shaft, and an output shaft is arranged in the planet speed reducing assembly and is linked with a cutting head driving shaft. The cutting speed reducer is characterized in that the speed reducer box body is in a round tube shape whose two ends are respectively provided with an input end flange and an output end flange, wherein the input end flange is linked with a machine body, and the output end flange is linked with a cutting suspension arm. The cutting speed reducer simplifies the structure of the box body, can be formed through casting, improves the integral strength of the box body, and prevents the problem of centralized welding line stress existing in a welding structure, since both a high speed planet carrier and a low speed planet assembly are floating type structures, a low speed stage planet carrier is matched with the output shaft in an involute spline mode to realize the floating of a heavy loading state planet carrier, thereby realizing the optimum driving equal load, improving the driving efficiency, guaranteeing the processing and the mounting precision, and enabling the inner structure of the whole speed reducer to be simple, practical and compact.

Description

Cutting speed reducer of coal mine development machine

Technical field

The utility model relates to a kind of reductor, particularly a kind of coal mine development machine cutting speed reducer.

Background technology

Coal mine development machine is a kind ofly to be used for coal and half coal petrography underworkings cutting coal petrography, to load the comprehensive mechanized driving equipment of transportation.Working environment is relatively poor; Operating mechanism's driving power is big, and the cutting loading excursion has short-term overload, shock loading greatly and often, vibrates bigger.The pick coal advances continuously in the tunnel, must excavate whole section during operation, requires cutting mechanism not only will have certain torque and rotating speed with the cutting coal petrography, and wants and can bob and weave.Whole equipment generally is made up of cutting mechanism, shipment activity, walking mechanism, hydraulic system, spraying system, electrical system, several major parts of fuselage.Wherein cutting mechanism is the key operation parts of development machine, it is fixed on the fuselage, form by cutting speed reducer and cutting head, its cutting speed reducer is its core running part, input and main frame power transmission shaft link, output and cutting head link, and input power is generally 30～300KW, and rotating speed is 750r/min or 1500r/min.Its structural shape and technical indicator are to the performance and the quality level decisive role of development machine.Coal mine development machine cantilevered longitudinal axis cutting mechanism reductor generally by the reductor casing, place its inner transmission mechanism and be arranged at the propelling oil cylinder that the casing both sides play supporting role and form, advance oil cylinder also effect of lifting cutting arm when playing supporting role, the orientation of adjusting cutting arm is to adapt to the needs of cutting operation.Because reductor casing both sides must be provided with the support that advances oil cylinder is installed, so must adopt the basket structure of welding, the main cross section is the square-section, and structure is complicated, and difficulty of processing is big; The inner relatively-stationary standard NGW planetary reducer of the structure structure that adopts of reductor, as a whole and the two ends of output shaft and slow speed turbine stage planet carrier all are bearing on the bearing, therefore in the casing place's bearing block must be set, make its structure complicated more, difficulty of processing increases.There is the following problem in coal mine development machine cantilevered longitudinal axis cutting mechanism reductor structure of the prior art: 1, the cutting mechanism center of gravity partially before, under the reaction force acts that when teeter is cut, is produced, easily make development machine produce bigger vibration, influence the operating mode of component and even complete machine, thereby reduce application life even cause the security reliability problem; 2, this baroque welded construction reductor casing exists stress concentration point many, and the fatigue crack defective easily takes place under the vibration effect during work; 3, the as a whole and two ends of output shaft and slow speed turbine stage planet carrier must be bearing on the bearing, and the difficulty of processing of himself and casing is big; 4, complex structure, the assembling maintenance difficult, whole reductor manufacturing cost and difficulty of processing are higher, and the transmission power loss is relatively large.

In sum, existing coal mine development machine cantilevered longitudinal axis cutting mechanism reductor needs further to improve.

The utility model content

The purpose of this utility model is to provide a kind of reductor of coal mine development machine cantilevered longitudinal axis cutting mechanism, it can overcome the shortcoming of prior art, simplifies body structure, improves the bulk strength of casing, avoid the existing weld stress concentration problem of welded structure, reduce difficulty of processing and cost.

The technical solution of the utility model is:

A kind of cutting speed reducer of coal mine development machine, it by casing, power shaft, place planetary reduction gear assembly in the casing, that link with power shaft to form, it is characterized in that: described reductor casing is the cylinder that two ends are respectively arranged with input flange and output flange.

As to further improvement of the utility model, described input flange center is equipped with the bearing of input shaft of supporting reductor power shaft, described planetary reduction gear assembly comprises level planetary assemblies at a high speed, output shaft, the slow speed turbine stage planetary assemblies, described high speed level planetary assemblies comprises level sun gear at a high speed, high speed level planetary gear, high speed level planet carrier, described slow speed turbine stage planetary assemblies comprises the slow speed turbine stage sun gear, the slow speed turbine stage planetary gear, the slow speed turbine stage planet carrier, described high speed level sun gear and power shaft are overall structure, the level planetary gear is installed on the high speed level locating shaft by bearing at a high speed, and the level locating shaft is fixed on the high speed level planet carrier at a high speed, described high speed level planet carrier is that involute gear cooperates connection with the slow speed turbine stage sun gear, the slow speed turbine stage planetary gear is installed on the slow speed turbine stage locating shaft by bearing, and the slow speed turbine stage locating shaft is fixed on the slow speed turbine stage planet carrier, and described slow speed turbine stage planet carrier is that involute spline cooperates connection with output shaft.

As to further improvement of the utility model, described slow speed turbine stage planet carrier and the spline fitted of output shaft connect for involute spline and cooperate connection.

As to further improvement of the utility model, the quantity of described high speed level planetary gear is 3, and the quantity of described slow speed turbine stage planetary gear is 5.

As to further improvement of the utility model, described casing is the cast form opening cylinder of end sealing, and the openend of described casing is sealed by case lid.

The beneficial effects of the utility model are:

The utility model is cylindric with the reductor cabinet design, and flange can be set by the two ends at cylinder connect with cutting cantilever and fuselage respectively, simplified body structure greatly, but cast form, improve the bulk strength of casing, avoid the existing weld stress concentration problem of welded structure, guarantee the machining accuracy of casing simultaneously easily.

Because the reductor casing becomes the rigidity draw bail with cutting cantilever and fuselage by flange, reductor not only can be delivered to the moment of torsion of development machine main motor and rotating speed on the cutting head after by the certain gear ratio conversion, can also directly bear 20 tons the propulsive force that weighs, and can bear because of cutting head destabilizing moment and the vibration that reaction force that cutting the time produced forms of bobbing and weaving.

Because planet carrier adopts the locating shaft cantilever structure that floats, and high-speed carrier and low speed planetary assemblies are floating structure, simultaneously slow speed turbine stage planet carrier and output shaft are that involute spline cooperates and realizes the unsteady of heavy duty class planet carrier, float effective and reliability is high, realized that best transmission all carries, improved transmission efficiency, because the two-stage planet carrier structure has all been taked the locating shaft cantilever structure, reduced the interface of planetary gear speed reducing mechanism and casing, simplified the structure of casing, double-walled planet carrier more of the prior art, has advantage of simple structure, and be convenient to guarantee processing and installation accuracy, significantly reduced difficulty of processing and cost, make whole reductor internal construction simple and practical and compact.

Description of drawings

Fig. 1 is an axial sectional view of the present utility model;

Fig. 2 is the slow speed turbine stage A-A sectional view radially among the utility model Fig. 1;

Fig. 3 is the high speed level B-B sectional view radially among the utility model Fig. 1.

Among the figure:

1, case lid, 2, casing, 3, the slow speed turbine stage planet carrier, 4, slow speed turbine stage planetary gear, 5, the low speed locating shaft, 6, the slow speed turbine stage bearing, 7, level planet carrier at a high speed, 8, the input flange, 9 output shafts, 10, slow speed turbine stage sun gear, 11, level locating shaft at a high speed, 12, level bearing at a high speed, 13, level planetary gear at a high speed, 14, bearing of input shaft, 15, power shaft, 16, level sun gear at a high speed, 17, fuselage, 18, the cutting cantilever.

The specific embodiment

Embodiment 1:

A kind of cutting speed reducer of coal mine development machine, it by casing 2, power shaft 15, place planetary reduction gear assembly in the casing 2, that link with power shaft 15 to form, power shaft 15 is connected with motor shaft, being provided with output shaft 9 in the planetary reduction gear assembly links with the cutting head power transmission shaft, reductor casing 2 is respectively arranged with the cylinder of input flange 8 and output flange for two ends, input flange 8 links with fuselage 17, and the output flange links with cutting cantilever 18.Casing 2 is the cast form cylinder of end sealing, input flange 8 is arranged at the blind end of casing 2, the openend of casing 2 is by case lid 1 sealing, case lid 1 promptly is a reductor output flange, input flange 8 centers are equipped with the bearing of input shaft 14 of supporting reductor power shaft 15, the planetary reduction gear assembly comprises level planetary assemblies, output shaft 9, slow speed turbine stage planetary assemblies at a high speed, a grade planetary assemblies comprises level sun gear 16, high speed level planetary gear 13, high speed level planet carrier 7 at a high speed at a high speed, and grade sun gear 16 is an overall structure with power shaft 15 at a high speed.The quantity of level planetary gear 13 is 3 at a high speed, level planetary gear 13 is installed on the high speed level locating shaft 11 by a high speed level bearing 12 at a high speed, and level locating shaft 11 is fixed on the high speed level planet carrier 7 at a high speed, and level planet carrier 7 cooperates connection with slow speed turbine stage sun gear 10 for involute gear at a high speed.

The slow speed turbine stage planetary assemblies comprises slow speed turbine stage sun gear 10, slow speed turbine stage planetary gear 4, slow speed turbine stage planet carrier 3, the quantity of slow speed turbine stage planetary gear 4 is 5, slow speed turbine stage planetary gear 4 is installed on the low speed locating shaft 5 by slow speed turbine stage bearing 6, and low speed locating shaft 5 is fixed on the slow speed turbine stage planet carrier 3, and slow speed turbine stage planet carrier 3 cooperates connection with output shaft 9 for involute spline.

Claims

1, a kind of cutting speed reducer of coal mine development machine, it by casing, power shaft, place planetary reduction gear assembly in the casing, that link with power shaft to form, it is characterized in that: described reductor casing is the cylinder that two ends are respectively arranged with input flange and output flange.

2, a kind of cutting speed reducer of coal mine development machine according to claim 1, it is characterized in that: described input flange center is equipped with the bearing of input shaft of supporting reductor power shaft, described planetary reduction gear assembly comprises level planetary assemblies at a high speed, output shaft, the slow speed turbine stage planetary assemblies, described high speed level planetary assemblies comprises level sun gear at a high speed, high speed level planetary gear, high speed level planet carrier, described slow speed turbine stage planetary assemblies comprises the slow speed turbine stage sun gear, the slow speed turbine stage planetary gear, the slow speed turbine stage planet carrier, described high speed level sun gear and power shaft are overall structure, the level planetary gear is installed on the high speed level locating shaft by bearing at a high speed, and the level locating shaft is fixed on the high speed level planet carrier at a high speed, described high speed level planet carrier is that involute gear cooperates connection with the slow speed turbine stage sun gear, the slow speed turbine stage planetary gear is installed on the slow speed turbine stage locating shaft by bearing, and the slow speed turbine stage locating shaft is fixed on the slow speed turbine stage planet carrier, and described slow speed turbine stage planet carrier is that spline fitted connects with output shaft.

3, a kind of cutting speed reducer of coal mine development machine according to claim 1 is characterized in that: described slow speed turbine stage planet carrier cooperates connection with the spline fitted connection of output shaft for involute spline.

4, a kind of cutting speed reducer of coal mine development machine according to claim 2 is characterized in that: the quantity of described high speed level planetary gear is 3, and the quantity of described slow speed turbine stage planetary gear is 5.

5, according to each described a kind of cutting speed reducer of coal mine development machine of claim 1～3, it is characterized in that: described casing is the cast form opening cylinder of end sealing, and the openend of described casing is sealed by case lid.