CN102678797A

CN102678797A - Transmission shaft braking wet multi-disc brake for driving axle

Info

Publication number: CN102678797A
Application number: CN2012101742832A
Authority: CN
Inventors: 杨文清; 其他发明人请求不公开姓名
Original assignee: SHANXI HUAMEI ZHIKE MECHANICAL AND ELECTRICAL EQUIPMENT CO Ltd
Current assignee: Shanxi research Coal Machinery Co.,Ltd.
Priority date: 2012-05-31
Filing date: 2012-05-31
Publication date: 2012-09-19
Anticipated expiration: 2032-05-31
Also published as: CN102678797B

Abstract

The invention belongs to the technical field of coal mine trackless auxiliary transportation devices, and in particular relates to a transmission shaft braking wet multi-disc brake. The brake comprises an inner shell, a middle shell, an outer shell and a supporting shaft, wherein a hollow piston is arranged in the middle shell; a friction pair is arranged in an inner hole of the piston and consists of a plurality of circular steel sheets which are fixedly connected in the inner hole of the piston through splines along the radial direction at equal intervals, and a plurality of circular friction sheets which are fixedly connected to the excircle of the supporting shaft through splines and positioned among the steel sheets; a certain gap is reserved between each steel sheet and each friction sheet; high pressure oil is injected into a cavity at the front end of the piston, so that the piston moves, a large gap is formed between each steel sheet and each friction sheet, and braking is released; and when the oil returns to a hydraulic system or the hydraulic system fails, a braking system eliminates the gap between each steel sheet and each friction sheet through a spring, braking moment is generated, and moving parts are completely immersed in lubricating oil. The brake is suitable for a transportation device requiring long-time braking.

Description

A kind of ransaxle is braked wet multi-disc brake with transmission shaft

Technical field

The invention belongs to trackless assistant conveyance device technique field, colliery, be specifically related to a kind of transmission shaft braking wet multi-disc brake.

Background technique

At present, the braking system of domestic coal industry trackless supplementary equipment-flame proof rubber tyre vehicle generally adopts wet multi-disc brake, and wet brake can be divided into wheel edge trig formula, semiaxis brake type according to its mounting point; Wheel edge trig formula break is installed on the wheel hub more, and whole break is sealed in the structure space of tire, so the radiating condition of tire is poor; Break works long hours; Very easily temperature raises fast, causes the generation of Braking efficiency decline and oil leakage phenomenon etc., and semiaxis brake type wet brake often is integrated in the axle housing; Because heat diffusion area is big; Lubricants working solution temperature is lower, the break better heat stability, but the built-in break of this integrated form can make the maintenance of break, maintenance adjustment not too convenient.

Summary of the invention

The objective of the invention is to overcome the shortcoming of existing technology, the transmission shaft braking that a kind of Braking efficiency is stable, break is safeguarded, maintenance is easy to adjust wet brake is provided.

The present invention solves the problems of the technologies described above the technological scheme of taking to be:

A kind of ransaxle is braked wet multi-disc brake with transmission shaft, it is characterized in that: comprise inner housing, middle shell, frame and supporting axle, inner housing is connected an end of middle shell through bolt, and frame is connected the other end of middle shell through bolt; Middle part, inner housing outside is equipped with blanking cover; Middle part, frame outside is equipped with end cap; On the middle part inwall of said inner housing with the coaxial circumference of supporting axle on some spring blind holes that evenly distribute; Spring blind hole bottom center has tapped blind hole; In the spring blind hole, place the spring of length, be pressed with lead ring on the spring and spring fixed through screw greater than the spring blind hole depth; Said middle shell is tubular, is provided with oil inlet hole above the barrel middle part and it goes up the installation screw plug, and spill port is arranged below; This hole is equipped with plug screw, and it is attached with temperature transducer, and porous plug and emptying mouth also are set on the barrel of middle shell; Hollow piston is installed in middle shell; Piston one end contacts with platen, and piston the other end outer surface and middle shell internal surface form Spielpassung, and this end internal surface and frame outer surface form Spielpassung; On middle shell, have oil hole with the cavity UNICOM of piston nose; This hole is connected with fuel inlet fitting, and front end and piston inner hole that frame stretches into piston inner hole connect through the spline slip, and piston inner hole is provided with friction pair; Friction pair by radially equidistant through the spline fixed connection in piston inner hole several ring steel discs and form through spline fixed connection several ring friction plates between steel disc on the supporting axle cylindrical, and leave certain interval between steel disc and the friction plate; On the barrel of middle shell, have the air hole with lubricant reservoir UNICOM, porous plug is installed on the air hole; On the barrel of middle shell, have the emptying pore with piston nose cavity UNICOM, the emptying pore is equipped with the emptying mouth; Wherein:

Said platen is circular, has the nuts via hole corresponding with the spring blind hole on it, and this platen covers on lead ring; Said supporting axle passes piston inner hole, and an end is installed in the inner housing middle part through tapered roller bearing, and has transmission axle head blind hole in the middle part of this end, and is processed with internal spline, and the other end is installed in the frame middle part through tapered roller bearing; Between housing and the housing, between supporting axle and the housing and take seal approach between piston and the fitting surface; The adjustment pad is housed on the attachment face of frame and middle shell.

The present invention compared with prior art has following beneficial effect:

1, through adopting combined housing, the moving element of break in the airtight fully space that is full of lubricant oil, the friction pair good heat dissipation effect;

2, through temperature transducer, monitor the temperature of break lubricant oil at any time, guarantee the braking ability of break;

3, the adjustment pad is housed on the attachment face of frame and middle shell, can in time adjusts the compressing degree of pad, recover braking ability according to the degree of wear, and easy to adjust;

4, the present invention is installed in the open chassis system, and radiating condition is good, and break can work long hours, and temperature rise is less.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is piston of the present invention and friction pair schematic representation;

Fig. 3 is that A of the present invention is to view.

Among the figure, the 1-inner housing; The 2-middle shell; The 3-spring; The 4-lead ring; The 5-bolt; The 6-platen; The 7-piston; The 8-oil inlet hole; The 9-steel disc; The 10-friction plate; The 11-outer shell; 12-adjusts pad; The 13-end cap; 14-adjusts nut; The 15-fuel inlet fitting; The 16-plug screw; The 17-temperature transducer; The 18-outside framework oil seal; The 19-supporting axle; The 20-blanking cover; The 21-porous plug; 22-emptying mouth; 23-transmission axle head blind hole; 24-cavity; 25-lubricant reservoir.

Embodiment

As shown in Figure 1; A kind of ransaxle is with transmission shaft brake type wet multi-disc brake; Comprise inner housing 1, middle shell 2, frame 11 and supporting axle 19, inner housing 1 is connected an end of middle shell 2 through bolt, and frame 11 is connected the other end of middle shell 2 through bolt; Middle part, inner housing 1 outside is equipped with blanking cover 20; Middle part, frame 11 outsides is equipped with end cap 13; On the middle part inwall of said inner housing 1 with the coaxial circumference of supporting axle on some spring blind holes that evenly distribute; Spring blind hole bottom center has tapped blind hole; In the spring blind hole, place the spring 3 of length, be pressed with lead ring 4 and spring 3 is fixing on the spring 3 through screw 5 greater than the spring blind hole depth; Said middle shell 2 is tubular, is provided with oil inlet hole 8 above the barrel middle part and it goes up the installation screw plug, and spill port 16 is arranged below; This hole is equipped with plug screw, and it is attached with temperature transducer 17, and hollow piston 7 is installed in middle shell 2; Piston 7 one ends contact with platen 6, and piston 7 the other end outer surfaces and middle shell 2 internal surfaces form Spielpassung, and this end internal surface and frame 11 outer surfaces form Spielpassung; On middle shell 2, have oil hole with cavity 24 UNICOMs of piston 7 front ends; This hole is connected with fuel inlet fitting 15, and front end and piston inner hole that frame 11 stretches into piston 7 endoporus connect through the spline slip, and piston inner hole is provided with friction pair.

As shown in Figure 2; Friction pair by radially equidistant through the spline fixed connection in piston inner hole several ring steel discs 9 and form through spline fixed connection several ring friction plates 10 between steel disc 9 on supporting axle 19 cylindricals, and leave certain interval between steel disc 9 and the friction plate 10.

As shown in Figure 3, on the barrel of middle shell 2, have the air hole with lubricant reservoir 25 UNICOMs, porous plug 21 is installed on the air hole; On the barrel of middle shell 2, have the emptying pore with piston nose cavity 24 UNICOMs, the emptying pore is equipped with emptying mouth 22.

As shown in Figure 1, said platen 6 is circular, has the nuts via hole corresponding with the spring blind hole on it, and this platen 6 covers on lead ring 4; Said supporting axle 19 passes piston inner hole; One end is installed in inner housing 1 middle part through tapered roller bearing, and has transmission axle head blind hole 23 in the middle part of this end, and is processed with internal spline; The other end is installed in frame 11 middle parts through tapered roller bearing, and this termination is provided with adjustment nut 14; Between housing and the housing, between supporting axle and the housing and take seal approach between piston and the fitting surface; Adjustment pad 12 is housed on the attachment face of frame 11 and middle shell 2.

Method for using of the present invention and working principle:

The present invention is under installment state, and spring 3 has certain deformation, when hydraulic system is passed through fuel inlet fitting 15 oil returns, leans on the distortion elastic force of spring 3 that steel disc 9 and friction plate 10 are compressed, and produces friction torque, realizes the braking function of braking system; When hydraulic system fails, system will keep braking state.During use, the present invention is fixed on the driven bridge, transmission shaft one end and transmission axle head blind hole 23 are with the spline fixed connection; High pressure oil gets in the cavity 24 through fuel inlet fitting 15, makes piston 7 stressed moving, and steel disc 9 breaks away from friction plate 10; Brake off, supporting axle 19 rotates with transmission shaft; When friction plate 10 wearing and tearing cause braking ability to descend, can tighten the connecting bolt between frame 11 and the middle shell 2, regulate pad 12 pressurized attenuation, thereby recover the braking ability of break; The oil vapor that produces in the braking process is discharged through porous plug 21, keeps certain lubricant reservoir working pressure; The air of hydraulic braking system is got rid of through emptying mouth 22, occurs air-resistance phenomenon when avoiding hydraulic work system.

Claims

1. a ransaxle is braked wet multi-disc brake with transmission shaft; It is characterized in that: comprise inner housing (1), middle shell (2), frame (11) and supporting axle (19); Inner housing (1) is connected an end of middle shell (2) through bolt, and frame (11) is connected the other end of middle shell (2) through bolt; Middle part, inner housing (1) outside is equipped with blanking cover (20); Middle part, frame (11) outside is equipped with end cap (13); On the middle part inwall of said inner housing (1) with the coaxial circumference of supporting axle on some spring blind holes that evenly distribute; Spring blind hole bottom center has tapped blind hole; In the spring blind hole, place the spring (3) of length, be pressed with lead ring (4) and spring (3) is fixing on the spring (3) through screw (5) greater than the spring blind hole depth; Said middle shell (2) is tubular; Be provided with oil inlet hole above the barrel middle part and installation screw plug (8) on it; Spill port is arranged below, and this hole is equipped with plug screw (16), and it is attached with temperature transducer (17); On the barrel of middle shell (2), have the air hole with lubricant reservoir (25) UNICOM, porous plug (21) is installed on the air hole; On the barrel of middle shell (2), have the emptying pore with piston nose cavity (24) UNICOM, the emptying pore is equipped with emptying mouth (22); Hollow piston (7) is installed in middle shell (2); Piston (7) one ends contact with platen (6); Piston (7) the other end outer surface and middle shell (2) internal surface form Spielpassung; This end internal surface and frame (11) outer surface form Spielpassung; On middle shell (2), have oil hole with cavity (24) UNICOM of piston nose; This hole is connected with fuel inlet fitting (15), and front end and piston inner hole that frame (11) stretches into piston inner hole connect through the spline slip, and piston inner hole is provided with friction pair; Friction pair by radially equidistant through the spline fixed connection in piston (7) endoporus several ring steel discs (9) and form through several ring friction plates (10) that the spline fixed connection is positioned on supporting axle (19) cylindrical between the steel disc (9), and leave certain interval between steel disc (9) and the friction plate (10); Wherein:

Said platen (6) is circular, has the nuts via hole corresponding with the spring blind hole on it, and this platen covers on lead ring (4); Said supporting axle (19) passes piston (7) endoporus; One end is installed in inner housing (1) middle part through tapered roller bearing; And this end middle part has transmission axle head blind hole (23), and is processed with internal spline, and the other end is installed in frame (11) middle part through tapered roller bearing; Between housing and the housing, between supporting axle and the housing and take seal approach between piston and the fitting surface; Adjustment pad (12) is housed on the attachment face of frame (11) and middle shell (2).