CN205254030U - Big arm casting device of coal -winning machine - Google Patents

Abstract

The utility model relates to a casting device specifically is a big arm casting device of coal -winning machine. The problem of the casting quality that exists among the big arm casting process of coal -winning machine not good, and it is low to process the finished product rate, inefficiency etc is solved. Including the casting box, be equipped with the gate in casting box both sides, casting box upside is provided with the pouring rising head, the cutting hole forming end and the vertical setting of motor hole forming end of casting box, the big arm casting chamber of formation is vertical setting. The utility model discloses can reduce workman intensity of labour, practice thrift the input of manpower, material, shorten quick -witted processing cycle, reduce the foundry goods crackle and mix with the incline, improve the product rate, the steady quality.

Description

The large arm casting device of coal-winning machine

Technical field

The utility model relates to a kind of casting device, is specially the large arm casting device of a kind of coal-winning machine.

Background technology

The large arm of coal-winning machine (rocking arm) is as the heavy product in the pass in coal excavation apparatus, it is the vitals that supports cutting-cylinder, and play power transmission effect, therefore it will carry alternate load, interiors of products quality and matching requirements are all quite strict, and do not allow to occur crackle, be mingled with etc. affects the product defect in final service life, and casting Technology Design need meet above requirement, evade potential quality risk, obtain premium casting. Foundry goods body construction is shown in Fig. 1: approximately 8 tons of this foundry goods gross weights, volume: length × wide × height approximately: 3000 × 1700 × 700;

This large arm configuration is Z-shaped, and one end is mounted motor endoporus 1, and the other end is installed the cut end endoporus 2 of cutting-cylinder. The casting device using is anticipated as shown in Figure 2,3, and when casting, to build chamber be horizontal positioned in large arm moulding, and the large arm motor endoporus 1 that casting forms and cut end endoporus 2 are horizontal with large arm.

Have to like this in motor hole and cut end endoporus placement rising head. The problem causing is the easy overheated scab that causes, cutting difficulty, and cutting gouge workload is large, affects surface quality, potential crack risk. And the finished product process-cycle is long, the remaining root of inner chamber rising head adds fragile process tool in man-hour.

Summary of the invention

The utility model is bad in order to solve the casting quality existing in the large arm casting process of coal-winning machine, and the problem such as processed finished products rate is low, and efficiency is low, provides a kind of coal-winning machine large arm casting device.

The technical solution of the utility model is, the large arm casting device of a kind of coal-winning machine, comprise casting box, be provided with gate in casting box both sides, casting box upside is provided with cast rising head, the cutting hole forming ends of described casting box and motor hole forming end vertically arrange, and the large arm casting cavity of formation is vertically to arrange.

Compared with prior art, the utility model transform casting box shape is vertically set as, just can cancel the rising head that motor hole and cut end endoporus are placed, only need to be at casting box arranged outside rising head, in casting process, realize foundry goods consecutive solidification, the foundry goods of formation meets customer requirement completely.

Advantage of the present utility model: 1. yield rate improves. 2. all rising heads are all at outer surface, and cutting is convenient, and labour intensity is low, cutting shortening in man-hour, and surface of internal cavity quality is guaranteed, and is difficult for cracking. 3. machining period shortens, and meets requirement at delivery date.

In a word, the utility model can reduce labor strength, saves the input of manpower, material, shortens the machined cycle, reduces casting crack and is mingled with tendency, improves yield rate, steady quality.

Brief description of the drawings

Fig. 1 is the large arm mechanism schematic diagram of coal-winning machine

Fig. 2 is one of existing casting device structure chart

Fig. 3 is existing casting device structure chart two

Fig. 4 is structural representation described in the utility model

In figure: 1-motor endoporus, 2-cut end endoporus, 3-top box, 4-nowel, 5-cut end rising head, 6-motor hole rising head, 7-cast rising head, 8-cast rising head, 9-cast rising head, 10-cast rising head, 11-cutting hole forming ends, 12-gate, 13-casting box, 14-motor hole forming end.

Detailed description of the invention

As schematically shown in Figure 4, the large arm casting device of a kind of coal-winning machine, comprise casting box 13, be provided with gate 12,15 in casting box 13 both sides, casting box 13 upsides are provided with cast rising head 7,8,9,10, the cutting hole forming ends 11 of described casting box 13 and motor hole forming end 14 vertically arrange, and the large arm casting cavity of formation is vertically to arrange.

Claims (1)

1. the large arm casting device of coal-winning machine, it is characterized in that: comprise casting box (13), be provided with gate (12,15) in casting box (13) both sides, casting box (13) upside is provided with cast rising head (7,8,9,10), cutting hole forming ends (11) and the motor hole forming end (14) of described casting box (13) vertically arrange, and the large arm casting cavity of formation is vertically to arrange.