CN2059938U

CN2059938U - Sealed wet type mechanical speed reducer for coal electric driller

Info

Publication number: CN2059938U
Application number: CN 89215712
Authority: CN
Inventors: 白云亭; 杨明书
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-09-01
Filing date: 1989-09-01
Publication date: 1990-08-01

Abstract

The utility model provides a sealed mechanical speed reducer for a wet type coal electric driller. The speed reducer for the wet type coal electric drill is characterized in that a water pipe and an output shaft which is rotated at high speed are sealed and connected by a mechanical device, and has the advantages of good sealing performance, no leakage and long service life. For the wet type coal electric drill which is provided with the speed reducer, sealing elements are unnecessary to be replaced frequently due to water leakage which is caused by the quick abrasions of the sealing elements, so that the maintenance period can be prolonged. The utility model can also improve the dry and wet performances of the wet type coal electric drill.

Description

Sealed wet type mechanical speed reducer for coal electric driller

The utility model relates to reducer, the particularly a kind of mechanical seal wet type electric coal drill reducer that a kind of improved wet type electric coal drill is used.

At present, the employed MZS-1.2A type of China's coal-mine wet type electric coal drill reducer, output shaft is a hollow shaft, wet type electric coal drill institute water passes through water pipe, and---hollow output shaft---hollow boring bit directive bores point, adopt the rubber seal sealed attachment between the hollow output shaft of static water pipe and rotation at a high speed, rubber seal serious wear, life-span are very short, make MZS-1.2A type wet type electric coal drill leak the rubber seal of having to change continually.

The purpose of this utility model is to overcome the deficiencies in the prior art, offers a kind of mechanical seal reducer of wet type electric coal drill, and this wet type electric coal drill reducer good seal performance, seal life are long.

The purpose of this utility model is achieved in that a kind of mechanical seal wet type electric coal drill reducer, it comprises the tertiary gear deceleration device, casing and mechanical reduction gear final stage semi-hollow output shaft, the cavity top of output shaft is provided with water inlet, be provided with water inlet at the corresponding with it position of casing, on the output shaft of output shaft water inlet both sides, be set with end envelope stationary ring, end envelope stationary ring is by rubber seal and casing sealing, can on output shaft, slide and can not rotate with it, two ends envelope stationary ring constitutes a spring housing, be set with a spring on the output shaft in spring housing, suit end envelope rotating ring on the output shaft in the envelope stationary ring outside, two ends, end envelope rotating ring and output shaft is fixed and seal by rubber seal.

The mechanical seal principle of this mechanical seal wet type electric coal drill reducer is: the water that enters reducer by the casing water inlet, because the rubber seal sealing between end envelope stationary ring and casing, can only enter spring housing, and enter water in the spring housing, because the end envelope stationary ring outside can only enter the output shaft cavity, export by output shaft by the sealing of end envelope rotating ring with the end envelope stationary ring of rubber seal and output shaft sealing.

In the utility model, the wearing and tearing of seal end envelope stationary ring and end envelope rotating ring, can slide by spring pressure side envelope stationary ring is compensated.

Advantage of the present utility model and good effect are as follows:

This reducer is compared with existing MZS-1.2A type wet type electric coal drill reducer: good seal performance, nothing are leaked, seal life is long.Using the wet type electric coal drill of this reducer to cause soon as sealing part abrasion leaks, change seal continually, prolonged maintenance cycle, avoided between the output shaft of at a high speed rotation and static water pipe, adopting the rubber seal sealing, the problem of rubber seal serious wear when cutting off the water supply, improved the electric drill dual-use capability of doing, wet.

Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail:

Fig. 1 is the front view of mechanical seal wet type electric coal drill reducer.

Fig. 2 is a mechanical seal wet type electric coal drill reducer gear deceleration device expanded view.

Fig. 3 is a mechanical seal wet type electric coal drill reducer mechanical sealing mechanism schematic diagram.

Fig. 4 is a mechanical seal wet type electric coal drill reducer output shaft schematic diagram.

Fig. 5 is mechanical seal wet type electric coal drill reducer end envelope rotating ring schematic diagram.

Fig. 6 is a mechanical seal wet type electric coal drill reducer locating snap ring schematic diagram.

Fig. 7 is mechanical seal wet type electric coal drill reducer end envelope stationary ring schematic diagram.

With reference to accompanying drawing, this mechanical seal wet type electric coal drill reducer comprises tertiary gear deceleration device and casing 3 and the mechanical reduction gear final stage semi-hollow output shaft 9 that is made of motor pinion 12, duplicate gear group 20, final stage gear 7.The cavity top of output shaft 9 is provided with two water inlets, is provided with a water inlet at the corresponding with it position of casing 3, water pipe head 4 is installed and uses oil sealing 5 sealings at the water inlet of casing 3.Be set with end envelope stationary ring 14 on the output shaft 9 of output shaft 9 water inlet both sides, breach and the water pipe head 4 of end envelope stationary ring 14 by end envelope stationary ring 14 is screwed into projections in the casing 3 realizes that it can slide and not with output shaft 9 rotations, realize sealing by rubber seal 15 and casing 3 on output shaft 9.Be set with a spring 13 on two ends envelope stationary ring 14 formations one spring housing, the output shaft in spring housing 9.Suit end envelope rotating ring 16 on the output shaft 9 in envelope stationary ring 14 outsides, two ends, stop platform 17 and output shaft 9 fixing assemblings that connection plush copper 22 that left end envelope rotating ring 16 is provided with by end envelope rotating ring 16 and output shaft 9 are provided with, connection plush copper 22 that right-hand member envelope rotating ring 16 is provided with by end envelope rotating ring 16 and stopper ring 6 fixing assemblings, stopper ring 6 usefulness keys are realized the fixedly assembling of right-hand member envelope rotating ring 16 and output shaft 9 with output shaft 9 fixing assemblings, and end envelope rotating ring 16 adopts rubber seal 21 to seal with 9 of output shafts.Bearing 18 is fixedly mounted in the casing 3 with back-up ring 1 and oil sealing 2 by the hole, the final stage gear 7 of tertiary gear deceleration device is fixed on the output shaft 9 by key and shaft block ring 8, and output shaft 9 is installed by the bearing on bearing 18 and the electric coal drill motor 10 11.

This mechanical seal wet type electric coal drill reducer material therefor: output shaft is No. 45 steel, and end envelope stationary ring is a tin bronze, and end envelope rotating ring is 40Cr, and stopper ring is No. 45 steel, and rubber seal is an oil resistant rubber, and other parts are ordinary metallic material.

Use the electric coal drill drill bit of this mechanical seal wet type electric coal drill reducer to be contained on the electric drill by drill chuck 19.

Claims

1, a kind of mechanical seal wet type electric coal drill reducer, it has one by motor pinion 12, duplicate gear group 20, the tertiary gear deceleration device that final stage gear 7 constitutes, it is characterized in that: mechanical reduction gear final stage output shaft 9 is half hollow output shaft, the cavity top of output shaft 9 is provided with water inlet, be provided with water inlet at the corresponding with it position of casing 3, on the output shaft 9 of output shaft 9 water inlet both sides, be set with end envelope stationary ring 14, end envelope stationary ring 14 is by rubber seal 15 and casing 3 sealings, can on output shaft 9, slide and can not rotate with it, two ends envelope stationary ring 14 constitutes a spring housing, be set with a spring 13 on the output shaft 9 in spring housing, suit end envelope rotating ring 16 on the output shaft 9 in envelope stationary ring 14 outsides, two ends, hold envelope rotating ring 16 and output shaft 9 to fix and pass through rubber seal 21 and seal.

2, mechanical seal wet type electric coal drill reducer according to claim 1 is characterized in that: breach and the water pipe head 4 of end envelope stationary ring 14 by end envelope stationary ring 14 is screwed into projections in the casing 3 realizes that it can slide and does not rotate with output shaft 9 on output shaft 9.

3, mechanical seal wet type electric coal drill reducer according to claim 1, it is characterized in that: connection plush copper 22 that stop platform 17 and output shaft 9 fixing assemblings that connection plush copper 22 that left end envelope rotating ring 16 is provided with by end envelope rotating ring 16 and output shaft 9 are provided with, right-hand member envelope rotating ring 16 are provided with by end envelope rotating ring 16 and stopper ring 6 fixing assemblings, stopper ring 6 usefulness keys are realized the fixedly assembling of right-hand member envelope rotating ring 16 and output shaft 9 with output shaft 9 fixing assemblings.

4, mechanical seal wet type electric coal drill reducer according to claim 1 is characterized in that: end envelope stationary ring 14 usefulness tin bronzes are made, and end envelope rotating ring 16 usefulness 40Cr make.