JPH0212040Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention has a simple structure and can be used to remove defects and grind the intermediate material during the process of thick rolling of steel materials. Our goal is to provide the industry with a simple hand grinder that leaves no residue.

[Prior art]

Conventional, simple hand-push wagon grinder W
(See Figure 3) However, although the abrasive belt B is constructed so that the sparks during grinding are driven in a direction that does not point towards the operator, due to its structure, as shown in Figure 3, In addition, it is not possible to grind up to the end T of the thick plate S corresponding to the distance between the wheel A and the contact wheel H, and a grinding residue a is generated. Also, the fourth
As shown in the figure, adjust the direction of the wagon grinder W.
Even if the belt is turned 180°, the ends of the abrasive belt B and the thick plate S
Since wheel A exists between T' and T', polishing remains b
occurs. If the wagon grinder W is rotated by 90 degrees, no polishing residue b will be produced, but due to steel manufacturing technology, if the intermediate material is not ground only in the rolling direction, there will be no flaw removal effect. There is a technical reason that ``flaw removal grinding should not be performed in a direction perpendicular to the rolling direction.''
Therefore, it is extremely troublesome that any of the four corners T, T' of the thick plate S cannot be ground to remove scratches. In order to dispose of the grinding residues a and b, it is a time-consuming task such as closely arranging auxiliary materials that can be flush with the surface S' of the workpiece.

[Problem that the invention attempts to solve]

The present invention was desired to have a hand-operated wagon grinder with a simple structure that can completely grind the edges of a thick plate of material to be polished.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention has been developed to provide a two-wheeled trolley with push handles at the front and rear.
A driving side contact wheel and a driven side contact wheel are installed, a V-belt is hung between the driving motor on the trolley and the driving side contact wheel, and the driven side contact wheel is made to be able to be adjusted by sliding forward and backward, and between these two contact wheels. This is an abrasive belt hung in the shape of a sash.

[Structure of the idea]

The configuration of the present invention will be explained based on the drawings of the embodiments.

As shown in FIGS. 1 and 2, the belt wagon grinder 1 has bearing plates 3, 3 mounted downwardly on both sides of a frame 2, approximately in the center, and rubber wheels 4 mounted on the bearing plates 3, 3, respectively. A drive motor 7 is mounted on the upper surface of the frame 2 through a mounting plate 6, and a drive motor 7 is mounted on the top surface of the frame 2, via a mounting plate 6.
A drive side contact wheel 10 is fixed to one end of a drive rotary shaft 9 which is rotatably supported by bearings 8, 8 attached to one end of the frames 2, 2, and a pulley 11 is fixed to the other end. A V-belt 1 is connected between the drive motor 7 and the drive pulley 12.
Hang 3.

A driven rotating shaft 17 is supported on a bearing 16 fixed to a shaft cylinder 15 which is slidably attached in the longitudinal direction to a shaft 14 fixed longitudinally to the other end of the frame 2 on the drive side contact wheel 10 side. A driven side contact wheel 18 is fixed to the rotating shaft 17,
An abrasive belt 19 is provided between the driven contact wheel 18 and the driving contact wheel 10.
Hang it like a sash.

Front and rear cross members 2 between the frames 2 and 2 of the trolley 5
Hand levers 21 and 211 for 0 and 20 respectively
Fix this hand lever 2 with it facing slightly outward.
Handles 22, 2 at the upper ends of each of 1, 211
21 is fixed horizontally, and a lever 2 for a stand has a fulcrum 23 in the middle on the front and rear of one frame 2.
4 and 241 are each pivoted on a fulcrum 23 so as to be rotatable back and forth, and the base 25 is attached to the shaft tube 15 on a fulcrum 26.
A belt tension lever 27 is attached so as to be rotatable back and forth, and a part of this base 25 and the shaft 14 are attached.
It is rotatably connected to the flange 28 by links 29, 29.

a tracking adjustment part 33 in which an adjustment screw 31 that abuts a stopper 30 provided on the bearing 16 is screwed into a mounting bracket 32 fixed to the shaft 14;
will be established.

In addition, in the figure, 24' and 241' are stands, L is the ground line when moving forward, L' is the ground line when retreating,
S' indicates the surface of the workpiece (thick plate) S, and C indicates the cover.

[Effect of invention]

The operation of the present invention will be explained based on the drawings of the embodiment.

As shown in FIGS. 5A and 5B and FIGS. 6A and 6B, when the drive motor 7 on the trolley 5 is operated, the drive side contact wheel 10 rotates in the direction of arrow R, and the contact wheel 10 on the driven side rotates in the direction of the arrow R. Since the abrasive belt 19 is hung like a sash,
The driven side contact wheel 18 rotates in the opposite direction in the direction of arrow R'.

Next, rotate the stand lever 24 on the driving side in the direction of arrow Q to move the stand 24' onto the surface of the workpiece S.
S', hold the handle 22, tilt the hand lever 21 on the drive side in the direction of the arrow Q, and gently align the grounding line L on the forward side with the surface S' of the workpiece S. At the same time, the belt wagon grinder 1 When the whole is pushed in the direction of arrow P, the trolley 5 has rubber wheels 4 and 4.
Belt Wagon Grinder 1
moves in the direction of arrow P, and the abrasive belt 19 between the drive-side contact wheel 10 and the surface S' of the workpiece S
rotates and moves forward while grinding away the flaws on the surface S′.

When the rubber wheel 4 moves forward and reaches the end T of the workpiece S (see Fig. 5), stop moving forward, tilt the handle 221 in the direction of arrow Q', and then turn the handle 221 to the stand lever 241 on the driven side. After supporting the belt wagon grinder 1, grasp the handle 221 and move the stand lever 241 on the driven side in the direction of the arrow.
Tilt it in the Q' direction to remove the stand 241' from the surface S', and tilt the hand lever 221 of the driven side handle 221 in the arrow Q' direction to align the ground contact line L' with the surface S' at the same time. Handle 22
1 in the direction of arrow P'. At this time, since the driven side contact wheel 18 starts to move from slightly outside the end T of the workpiece S, the grinding residue a when moving forward is
(see Figure 6) is completely ground.

From the above, since there is no need to change the running direction of the belt wagon grinder 1 by 180 degrees, no grinding residue b (see FIG. 6) is generated, and all flaws on the surface S' are removed.

When the grinding is completed, the stands 24, 241 are returned to their original positions and the drive motor 7 is stopped.

[Effect of idea]

Since the present invention has the above-mentioned configuration, it is possible to remove scratches on a thick plate, which is an intermediate material during rolling, by extremely easy and quick grinding along the rolling direction using a simple and inexpensive device. The effect is extremely noticeable.

In particular, by hanging the abrasive belt in a sash-like manner, both contact wheels can be reversed, so no matter which contact wheel is used for grinding, the sparks will not be directed towards the operator. Since grinding residue due to the gap between the rubber wheel and the contact wheel and the presence of the rubber wheel is eliminated, auxiliary materials are also unnecessary.

Note that the present invention can be used not only for flaw removal grinding of thick plates of steel rolling intermediate products, but also for grinding work in other fields for similar purposes where the grinding direction is limited to one direction.

[Brief explanation of drawings]

Fig. 1 is a front view of the embodiment of the present invention, Fig. 2 is a plan view thereof, Figs. , b are operation explanatory diagrams of the embodiment of the present invention. Explanation of symbols of main parts: 1: Belt wagon grinder, 2: Frame, 4: Rubber wheels, 5: Dolly, 7: Drive motor, 9: Drive rotation shaft, 10:
Drive side contact wheel, 14: shaft, 15: shaft cylinder, 16: bearing, 17: driven rotating shaft, 18: driven side contact wheel, 19: abrasive belt, 2
1,211: Hand lever, 24,241: Stand lever, 24', 241': Stand, 2
7: Belt tension lever, 29: Link,
33: Tracking adjustment section, S: Workpiece material (thick plate), S': Surface.

Claims (1)

[Scope of utility model registration request] A trolley 5 with rubber wheels 4, 4 attached to the center on both sides
A driving side contact wheel 10 and a driven side contact wheel 18 are each rotatably mounted on both sides of the carriage 5, and a drive motor 7 for driving the driving side contact wheel 10 is provided on the upper surface of the carriage 5 at approximately the center thereof. hand levers 21, 211 and stand levers 24 at the front and rear of the
241, the bearing 16 of the driven side contact wheel 18 is slidable back and forth via the link 29 and the belt tension lever 27, and a tracking adjustment part 33 is provided which comes into contact with the bearing 16 of the driven side contact wheel 18. 1. A two-way belt wagon grinder characterized in that an abrasive belt 19 is suspended between the driving side contact wheel 10 and the driven side contact wheel 18 in the form of a sash.