CN2283540Y

CN2283540Y - Portable band saw

Info

Publication number: CN2283540Y
Application number: CN 96243590
Authority: CN
Inventors: 王东顺; 聂德忠; 齐振洲; 张德生
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-10-24
Filing date: 1996-10-24
Publication date: 1998-06-10
Anticipated expiration: 2006-10-24

Abstract

The utility model relates to a portable band saw machine. A band saw is sheathed on a driving wheel and a driven wheel. A machine seat and an upper cover are hinged by a rotary shaft to form two parts of separate type. The main shaft end of a motor is provided with skewed teeth which are engaged with a skew gear fixedly connected with the driving wheel. A tensioning mechanism is arranged on the driven wheel. A load adjusting mechanism with a torsional spring is arranged on the rotary shaft. The machine seat is composed of a gripping mechanism. The utility model has the advantages of compact structure, reasonable layout, small size, light weight, portability and high automation level, and is suitable for open air and construction sites in fields.

Description

Portable band sawing machine

The utility model relates to a kind of band sawing machine, particularly a kind of portable band sawing machine.

Existing band saw mechanism is large-scale metal cutter, and volume is big, and weight is big, just can come into operation after the Installation and Debugging, can't carry, and therefore can't carry out outdoor or field work.

The purpose of this utility model is to provide a kind of and carries, operation, easy to maintenance, and the high portable band sawing machine of automaticity.

The purpose of this utility model realizes by following structure: support and loam cake are by the split type two parts of the hinged formation of rotating shaft, cover on it and be fixed with motor, this electric machine main shaft end is a helical teeth, it and central shaft are fixed on a helical gear engagement that covers, this helical gear is fixedlyed connected with driving wheel, and a cover tensioning apparatus is housed on follower, and band saw passes through from being fixed in the control panel groove that covers, a deferrable load mechanism is housed in rotating shaft, and support is made of gripping mechanism.

Therefore transmission structures of the present utility model is simple, and gearratio is big, and noise is low, shakes for a short time, can export preferably and turn round saw, has reduced volume again.Load mechanism of the present utility model can be adjusted, and the utility model can be processed the bar and the section bar of different metal model, adapts to the requirement of sawing feed.This mechanism structure is simple, and practical function is good.Have a cover strainer on the follower of the present utility model, be in tensioning state when making band saw in working order, to increase the frictional force between band saw and driving wheel and follower.The utility model also has a cover and clamps device, has dial, makes the utility model can cut out processing inclined-plane from 0-45 °.General structure compactness of the present utility model, rationally distributed, operate, use all more convenient.The utility model automaticity is higher, has improved Metal Cutting efficient greatly, is suitable for the outdoor or on-the-spot use of field construction.

Fig. 1 is the utility model overall structure schematic diagram;

Fig. 2 is the utility model power transmission mechanism cutaway view;

Fig. 3 is the transmission mechanism principle schematic;

Fig. 4 is a strainer structure cut-away view;

Fig. 5 is the assembling cut-away view of slide and spring;

Fig. 6 is the upward view of Fig. 5;

Fig. 7 is the load mechanism structural representation;

Fig. 8 is the gripping mechanism structural representation.

Below in conjunction with drawings and Examples the utility model is further described.

Embodiment:

Its band saw of the utility model as shown in Figure 1 is sleeved on the driving wheel 1 and follower 2 of transmission device; transmission device has motor 3 to drive, and as shown in Figure 2, also has speed-limiting device on the motor 3; constitute by speed limiting mechanism and speed-limiting switch, when overrunning, can cut the purpose that power supply reaches protection automatically.Support 4 and loam cake 5 are fixed with motor 3 by the split type two parts of rotating shaft 6 hinged formations on its loam cake 5 as shown in Figure 1.Drive connection of the present utility model has helical teeth on motor 3 main shafts as shown in Figure 3, and it and central shaft are fixed on a helical gear 7 engagements on the loam cake 5, and this helical teeth 7 is fixedlyed connected with driving wheel 1.One cover tensioning apparatus is housed on follower 2, slide that has a dovetail groove 9 is slidingly matched with track on the loam cake 5 as shown in Figure 5, slide 9 another sides have two parallel guide spiro rods 11 as shown in Figure 6, the centre all is installed with spring 12, its front end has nut 13, and slide 9 one ends are equipped with chute 14, covers on as shown in Figure 4 crank axle 15 also is housed, its crank section cooperates with groove 14, and follower 2 is fixed on the slide 9 by screw.When pulling crank axle 15 with handle 24, crank is just pushed slide open along chute, makes slide along track travel, owing to fixing follower on the slide, then makes driven pulley enter the operating position, and the frictional force of band saw then guarantees by preloading spring between driving wheel and follower.As shown in Figure 7, deferrable load mechanism is that suit torsion spring 16 in rotating shaft 6, and the one end bearing is on support 4, and the other end is enclosed within to be with on the ringleted eyelet bolt 17, and the other end of eyelet bolt 17 has a knurled nut.The size of load can be finished by the rotation knurled nut.The utility model just can be fit to various bars and the different requirements of section bar to feed like this.As shown in Figure 8, gripping mechanism has the substrate 19 of a dovetail groove, has scale indicating dial 20 on the substrate 19, and clamping plate 21 are connected on the substrate 19 by movable bolt, and ambulatory splint 22 is positioned on the substrate 19, and has clamp screw rod 23.Clamp turns 0-45 ° of angle.Band saw passes through from being fixed in control panel 8 grooves that cover as shown in Figure 1, and band saw could form the perpendicular cuts to workpiece like this.

Claims

1, a kind of portable band sawing machine, its band saw is sleeved on the driving wheel (1) and follower (2) of transmission device, transmission device has motor (3) to drive, support has clamping device on (4), it is characterized in that: support (4) and loam cake (5) are by the split type two parts of the hinged formation of rotating shaft (6), be fixed with motor (3) on its loam cake (5), this electric machine main shaft end is a helical teeth, it and central shaft are fixed on a helical gear (7) engagement on the loam cake (5), this helical gear (7) is fixedlyed connected with driving wheel (1), one cover tensioning apparatus is housed on follower (2), band saw passes through from being fixed in control panel (8) groove that covers, a deferrable load mechanism is housed in rotating shaft (6), and support (4) is made of gripping mechanism.

2, a kind of portable band sawing machine according to claim 1, it is characterized in that: described tensioning apparatus be a slide (9) that has a dovetail teeth groove it and on the track that covers be slidingly matched, slide (9) another side has two parallel guide spiro rods (11), the centre all is installed with spring (12), its front end has nut (13), slide (9) one ends are equipped with chute (14), crank axle (15) also is housed on the loam cake (5), its crank section cooperates with groove (14), and follower (2) is fixed on the slide (9) by screw.

3, a kind of portable band sawing machine according to claim 1 and 2, it is characterized in that: described deferrable load mechanism torsion spring (16) for going up suit in rotating shaft (6), the one end bearing is on support (4), the other end is enclosed within to be with on the ringleted eyelet bolt (17), and the other end of eyelet bolt (17) has a knurled nut.

4, a kind of portable band sawing machine according to claim 1 and 2, it is characterized in that: described gripping mechanism has the substrate (19) of a dovetail groove, have scale indicating dial (20) on the substrate (19), clamping plate (21) are connected on the substrate (19) by movable bolt, ambulatory splint (22) is positioned on the substrate (19), and has clamp screw rod (23).

5, a kind of portable band sawing machine according to claim 3, it is characterized in that: described gripping mechanism has the substrate (19) of a dovetail groove, have scale indicating dial (20) on the substrate (19), clamping plate (21) are connected on the substrate (19) by movable bolt, ambulatory splint (22) is positioned on the substrate (19), and has clamp screw rod (23).