CN102678797B

CN102678797B - Transmission shaft braking wet multi-disc brake for driving axle

Info

Publication number: CN102678797B
Application number: CN201210174283.2A
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: 2014-02-26
Anticipated expiration: 2032-05-31
Also published as: CN102678797A

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, wet brake can be divided into wheel limit brake type according to its mounting point, Semi-axle brake formula, wheel limit brake type break is arranged on wheel hub more, whole break is sealed in the structure space of tire, therefore the radiating condition of tire is poor, break works long hours, very easily temperature raises fast, cause the generation of Braking efficiency decline and oil leakage phenomenon etc., Semi-axle brake rotating vane type break is often integrated in axle housing, because heat diffusion area is large, Lubricants working solution temperature is lower, break better heat stability, but the built-in break of this integrated form can make the maintenance of break, it is not too convenient that maintenance is adjusted.

Summary of the invention

The object of the invention is to overcome the shortcoming of prior art, provide that a kind of Braking efficiency is stable, break is safeguarded, maintain transmission shaft braking wet brake easy to adjust.

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

Ransaxle is braked a wet multi-disc brake with transmission shaft, it is characterized in that: comprise inner housing, middle shell, frame and supporting axle, inner housing is bolted the one end at middle shell, and frame is bolted the other end at middle shell, middle part, inner housing outside is provided with blanking cover, middle part, frame outside is provided with end cap, on the middle part inwall of described inner housing with on the coaxial circumference of supporting axle, be uniformly distributed some spring blind holes, spring blind hole bottom center has tapped blind hole, in spring blind hole, place the spring that length is greater than spring blind hole depth, on spring, be pressed with lead ring and by screw, spring fixed, described middle shell is tubular, barrel middle part is provided with oil inlet hole above and installation screw plug on it, there is spill port below, this hole is provided with plug screw, it is attached with temperature transducer, porous plug and emptying mouth are also set on the barrel of middle shell, hollow piston is installed in middle shell, piston one end contacts with platen, piston the other end outer surface and middle shell internal surface form Spielpassung, this end internal surface and frame outer surface form Spielpassung, on middle shell, have the oil hole with the cavity UNICOM of piston nose, this hole is connected with fuel inlet fitting, frame stretches into the front end of piston inner hole and piston inner hole by the spline connection of sliding, piston inner hole arranges friction pair, friction pair by radially equidistant by spline fixed connection several ring steel discs in piston inner hole and forming by spline fixed connection several ring friction plates between steel disc on supporting axle cylindrical, and leave certain interval between steel disc and friction plate, on the barrel of middle shell, have the air hole with lubricant reservoir UNICOM, porous plug is installed on air hole, on the barrel of middle shell, have the emptying pore with piston nose cavity UNICOM, emptying pore is provided with emptying mouth, wherein:

Described platen is circular, has the nuts via hole corresponding with spring blind hole on it, and this platen covers on lead ring; Described supporting axle is through piston inner hole, and one end is arranged on inner housing middle part by 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 arranged on frame middle part by tapered roller bearing; Between housing and housing, between supporting axle and housing and take seal approach between piston and fitting surface; 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, by adopting combined housing, the moving element of break in the completely airtight space that is full of lubricant oil, friction pair good heat dissipation effect;

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

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

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

Accompanying drawing explanation

Fig. 1 is structural representation of the present invention;

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

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

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

Embodiment

As shown in Figure 1, transmission shaft brake type wet multi-disc brake for a kind of ransaxle, comprise inner housing 1, middle shell 2, frame 11 and supporting axle 19, inner housing 1 is bolted in one end of middle shell 2, and frame 11 is bolted the other end at middle shell 2, inner housing 1 middle part, outside is provided with blanking cover 20, frame 11 middle parts, outside are provided with end cap 13, on the middle part inwall of described inner housing 1 with on the coaxial circumference of supporting axle, be uniformly distributed some spring blind holes, spring blind hole bottom center has tapped blind hole, in spring blind hole, place the spring 3 that length is greater than spring blind hole depth, on spring 3, be pressed with lead ring 4 spring 3 is fixing by screw 5, described middle shell 2 is tubular, barrel middle part is provided with oil inlet hole 8 above and installation screw plug on it, there is spill port 16 below, this hole is provided with plug screw, it is attached with temperature transducer 17, at the interior installation hollow piston 7 of middle shell 2, piston 7 one end contact with platen 6, piston 7 the other end outer surfaces and middle shell 2 internal surfaces form Spielpassung, this end internal surface and frame 11 outer surfaces form Spielpassung, on middle shell 2, have the oil hole with cavity 24 UNICOMs of piston 7 front ends, this hole is connected with fuel inlet fitting 15, frame 11 stretches into the front end of piston 7 endoporus and piston inner hole by the spline connection of sliding, piston inner hole arranges friction pair.

As shown in Figure 2, friction pair by radially equidistant by spline fixed connection several ring steel discs 9 in piston inner hole and forming by 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 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 air hole; On the barrel of middle shell 2, have the emptying pore with piston nose cavity 24 UNICOMs, emptying pore is provided with emptying mouth 22.

As shown in Figure 1, described platen 6 is circular, has the nuts via hole corresponding with spring blind hole on it, and this platen 6 covers on lead ring 4; Described supporting axle 19 is through piston inner hole, one end is arranged on inner housing 1 middle part by 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 arranged on frame 11 middle parts by tapered roller bearing, and this termination is provided with adjusting nut 14; Between housing and housing, between supporting axle and housing and take seal approach between piston and fitting surface; On the attachment face of frame 11 and middle shell 2, be equipped with and adjust pad 12.

Using method of the present invention and working principle:

The present invention is under installment state, and spring 3 has certain distortion, when hydraulic system is passed through fuel inlet fitting 15 oil return, 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 in driven bridge, transmission shaft one end and transmission axle head blind hole 23 are with spline fixed connection, high pressure oil enters in cavity 24 by fuel inlet fitting 15, makes the stressed movement of piston 7, and steel disc 9 departs from friction plate 10, brake off, supporting axle 19 rotates with transmission shaft; When friction plate 10 wearing and tearing cause braking ability to decline, the connecting bolt between Tightenable frame 11 and middle shell 2, regulates pad 12 pressurized attenuation, thereby recovers the braking ability of break; The oil vapor producing in braking process is discharged by porous plug 21, keeps certain lubricant reservoir working pressure; The air of hydraulic braking system is got rid of by emptying mouth 22, occurs air-resistance phenomenon while 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 bolted in one end of middle shell (2), and frame (11) is bolted the other end in middle shell (2), middle part, inner housing (1) outside is provided with blanking cover (20), middle part, frame (11) outside is provided with end cap (13), on the middle part inwall of described inner housing (1) with on the coaxial circumference of supporting axle, be uniformly distributed some spring blind holes, spring blind hole bottom center has tapped blind hole, in spring blind hole, place the spring (3) that length is greater than spring blind hole depth, on spring (3), be pressed with lead ring (4) spring (3) is fixing by screw (5), described middle shell (2) is tubular, barrel middle part is provided with oil inlet hole above and installation screw plug (8) on it, there is spill port below, this hole is provided with plug screw (16), 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 air hole, on the barrel of middle shell (2), have the emptying pore with piston nose cavity (24) UNICOM, emptying pore is provided with emptying mouth (22), hollow piston (7) is installed in middle shell (2), piston (7) one end contacts 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 the oil hole with cavity (24) UNICOM of piston nose, this hole is connected with fuel inlet fitting (15), frame (11) stretches into the front end of piston inner hole and piston inner hole by the spline connection of sliding, piston inner hole arranges friction pair, by spline fixed connection, several ring steel discs (9) in piston (7) endoporus and several ring friction plates (10) of being positioned on supporting axle (19) cylindrical between steel disc (9) by spline fixed connection form friction pair by radially equidistant, and leave certain interval between steel disc (9) and friction plate (10), wherein:

Described platen (6) is circular, has the nuts via hole corresponding with spring blind hole on it, and this platen covers on lead ring (4); Described supporting axle (19) is through piston (7) endoporus, one end is arranged on inner housing (1) middle part by 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 arranged on frame (11) middle part by tapered roller bearing; Between housing and housing, between supporting axle and housing and take seal approach between piston and fitting surface; On the attachment face of frame (11) and middle shell (2), be equipped with and adjust pad (12).