Ship narrow space penetration piece grinding device

Abstract

A ship narrow space penetration piece grinding device is installed at the position of a penetration piece opening and attracted to the surface of an iron plate on the edge of the opening through a magnet, the device is provided with a grinder, the grinder is provided with a grinding shaft, one end of the grinding shaft is connected with a conical grinding head, the other end of the grinding shaft is fixedly provided with a circular gear, and the circular gear is connected with a square main body shaft. Scales are arranged on the surface of the square main body along the radian of the circular gear, an angle indicator is arranged on the edge of the gear and points to the scales, a main shaft is driven by a motor or manually to drive a grinder to rotate, and the grinder has the function of setting the grinding angle and grinds the tapping groove of the penetration piece until the technical requirement for the groove angle is met. The device has the advantages that the grinding quality effect is good, the production efficiency is high when the device is used in a narrow space, the labor use cost is reduced, recycling is achieved, the device is superior to manual grinding of a penetration piece groove in the past, the grinding groove angle meets the technical standard, the cost is reduced, energy is saved, environment is protected, and operation is convenient.

Description

Technical Field

[0001] The present invention belongs to the field of marine ship design and construction, and particularly relates to a grinding device for ship through-hull fittings in narrow spaces. Background Art

[0002] During the shipbuilding process, the opening areas of some through-hull fittings are in narrow spaces. There are different technical standard requirements for the welding forms of ship through-hull fittings, such as double-sided bevels, single-sided bevels, etc. For the bevels, there are also requirements for angles of 30° and 45°. Some through-hull fittings in shipbuilding need to be opened on-site according to the pipeline construction route. After opening, the edges of the openings are processed according to the welding technical requirements of the through-hull fittings. In the past, after the through-hull fittings were opened, the bevels of the opening areas were mainly ground manually by workers. There are several problems with manual grinding of bevels: First, the time for manual grinding of bevels is relatively long and the construction intensity is high; Second, the bevel angles ground manually are either too large or too small; Third, the narrow space increases the construction difficulty for manual grinding of bevels. Aiming at the defects in the above problems, in order to change the problems of low construction efficiency, inability to guarantee construction quality, and frequent rework grinding, a grinding device for ship through-hull fittings in narrow spaces is designed to achieve the effects of cost reduction and efficiency increase, reliable construction quality, convenient installation, and simple operation. Summary of the Invention

[0003] To solve the above problems, the present invention provides a grinding device for ship through-hull fittings in narrow spaces, and the technical solution adopted is as follows: A grinding device for ship through-hull fittings in narrow spaces has a vertically arranged cylindrical main shaft. The main shaft is supported and fixed at the opening of the through-hull fitting through a frame. A grinding device is fixed at the bottom of the main shaft. The grinding device is connected to the main shaft through a grinding bracket. The grinding bracket has a square main body. The grinding device has a grinding shaft. One end of the grinding shaft is connected with a conical grinding head, and the other end is fixed with a circular gear. The circular gear is shaft-connected to the square main body. On the surface of the square main body, scales are arranged along the arc of the circular gear. The edge of the gear is provided with an angle indicator, and the angle indicator points to the scale.

[0004] An adjusting wheel is arranged on the square main body beside the gear. The adjusting wheel is arranged vertically. The outer surface of the adjusting wheel is provided with threads, and the adjusting wheel meshes with the teeth of the gear.

[0005] Manually rotate the adjustment wheel to adjust the rotation angle of the gear. When the grinding head contacts the edge of the opening of the through-hull fitting, observe the specific scale reading corresponding to the angle indicator. According to the actual angle reading indicated by the angle indicator, determine the difference between the grooving angle of grinding and the grooving angle required by the design. At this time, turn on the control switch of the grinder, and the grinding head rotates to grind the edge grooving of the through-hull fitting. Slowly rotate the main shaft to make the grinding head evenly grind the opening edge by 360°. When the main shaft rotates for a period of time and there is no grinding amount between the grinding head and the opening edge, the grinding angle adjustment wheel can be manually adjusted to adjust the grinding angle feed. Manually rotate the main shaft in turn and observe the grinding effect until the grinding angle requirement is met and then stop the device.

[0006] For the above-mentioned grinding device for through-hull fittings in a narrow space of a ship, further, the shaft passes through the center of the gear and connects the gear to the square body of the grinding support, and the gear is rotatable relative to the square body.

[0007] For the above-mentioned grinding device for through-hull fittings in a narrow space of a ship, further, a manual turning handle is provided at the top of the main shaft.

[0008] For the above-mentioned grinding device for through-hull fittings in a narrow space of a ship, further, the bottom of the frame support is square, and two circular frames are provided at the center of the frame support. The two circular frames are arranged up and down, and the main shaft passes through the two circular frames in turn and is fixed. The main shaft is threadedly connected to the circular frame.

[0009] For the above-mentioned grinding device for through-hull fittings in a narrow space of a ship, further, a magnetic attraction device is inlaid at the bottom of the frame support and is fixed on the deck at the opening of the through-hull fitting through the magnetic attraction device.

[0010] For the above-mentioned grinding device for through-hull fittings in a narrow space of a ship, further, the grinding shaft is connected to the gear through a compression ring.

[0011] The grinding quality effect of the present invention is good, the production efficiency in a narrow space is high, the labor use cost is reduced, it can be recycled, and it is superior to the past manual grinding of the through-hull fitting groove, achieving the advantages of the grooving angle of grinding meeting the technical standards, cost reduction, energy conservation and environmental protection, and easy operation. Description of the Drawings

[0012] Figure 1 is the front view structural schematic diagram of the grinding device; Figure 2 is the side view structural schematic diagram of the grinding device; Figure 3 is the structural schematic diagram of the grinder; Among them, frame support 1, manual turning handle 2, main shaft 3, magnetic device 4, grinding support 5, grinding machine 6, grinding angle adjustment wheel 7, grinding angle scale 8, grinding machine fixed rotator 9, angle indicator 10. Detailed implementation mode

[0013] The present invention will be further described in conjunction with the accompanying drawings.

[0014] A grinding device for a pipe penetration in a narrow space of a ship, as Figures 1 - 3 shown, has a vertically arranged cylindrical main shaft. The main shaft is supported and fixed at the opening of the pipe penetration through a frame. A grinder is fixed at the bottom of the main shaft. The grinder is connected to the main shaft through a grinding support. The grinding support has a square main body. The grinder has a grinding shaft. One end of the grinding shaft is connected with a conical grinding head, and the other end is fixed with a circular gear. The circular gear is shaft-connected with the square main body. Scales are arranged on the surface of the square main body along the arc of the circular gear. The edge of the gear is provided with an angle indicator, and the angle indicator points to the scale.

[0015] An adjusting wheel is arranged on the square main body beside the gear. The adjusting wheel is arranged vertically. The outer surface of the adjusting wheel is provided with threads, and the adjusting wheel meshes with the teeth of the gear.

[0016] In shipbuilding, after the opening work of the pipe penetration is completed, place the pipe penetration opening grinding device at the opening, adjust the grinding device to the center position of the opening, turn on the four magnetic devices on the main bearing of the grinding device, so that the grinding device is tightly adsorbed on the steel plate, manually rotate the adjusting wheel to adjust the rotation angle of the gear. When the grinding head contacts the edge of the pipe penetration opening, observe the specific scale reading corresponding to the angle indicator. According to the actual angle reading pointed by the angle indicator, determine the difference between the grooving angle of grinding and the grooving angle required by the design. At this time, turn on the control switch of the grinder, the grinding head rotates and grinds the edge groove of the pipe penetration. Slowly rotate the main shaft to make the grinding head evenly grind the opening edge 360°. When the main shaft rotates for a period of time and there is no grinding amount between the grinding head and the opening edge, the grinding angle adjusting wheel can be manually adjusted to adjust the grinding angle feed. Manually rotate the main shaft in turn and observe the grinding effect until the grinding angle requirement is reached and then stop the device. Turn off the magnetic device switch and remove the device to carry out the subsequent construction of the pipe penetration. The technical characteristics of this device are: quick installation, simple operation, the angle indicator realizes accurate measurement of the grooving angle, good grinding quality effect, high production efficiency in narrow spaces, and reduction of labor use cost.

Claims

1. A grinding device for a through-hull component in a narrow space of a ship, characterized in that, There is a vertically arranged cylindrical main shaft, which is supported and fixed at the opening of the penetration piece through a frame. A grinder is fixed at the bottom of the main shaft. The grinder is connected to the main shaft through a grinding support. The grinding support has a square body. The grinder has a grinding shaft. One end of the grinding shaft is connected with a conical grinding head, and the other end is fixed with a circular gear. The circular gear is connected to the square body by a shaft. A scale is arranged on the surface of the square body along the arc of the circular gear. The edge of the gear is provided with an angle indicator, and the angle indicator points to the scale; An adjusting wheel is arranged on the square body beside the gear. The adjusting wheel is arranged vertically. The outer surface of the adjusting wheel has threads, and the adjusting wheel meshes with the teeth of the gear; Manually rotate the adjusting wheel to adjust the rotation angle of the gear. When the grinding head contacts the edge of the opening of the penetration piece, observe the specific scale reading corresponding to the angle indicator. According to the actual angle reading pointed by the angle indicator, determine the difference between the groove angle ground and the groove angle required by the design. At this time, turn on the control switch of the grinder, and the grinding head rotates to grind the groove of the edge of the penetration piece. Slowly rotate the main shaft to make the grinding head evenly grind the edge of the opening by 360°. When the main shaft rotates for a period of time and there is no grinding amount between the grinding head and the edge of the opening, the grinding angle adjusting wheel can be manually adjusted to adjust the grinding angle feed. Manually rotate the main shaft in turn and observe the grinding effect until the grinding angle requirement is met and then stop the device.

2. The grinding device for the through-hull parts in the narrow space of a ship according to claim 1, characterized in that, The shaft passes through the center of the gear to connect the gear with the square body of the grinding support. The gear can rotate relative to the square body.

3. A grinding device for a ship's narrow space through-hull fitting according to claim 1, characterized in that, A manual turning handle is arranged at the top of the main shaft.

4. A grinding device for ship through-hull fittings in narrow spaces according to claim 1, characterized in that, The bottom of the frame support is square. Two circular frames are arranged at the center of the frame support. The two circular frames are arranged vertically. The main shaft passes through the two circular frames in turn and is fixed. The main shaft is threadedly connected with the circular frames.

5. A grinding device for a ship's small-space through-hull component according to claim 4, characterized in that, The bottom of the frame support is inlaid with a magnetic attraction device, which is fixed on the deck at the opening of the penetration piece through the magnetic attraction device.

6. The grinding device for the through-hull component in a narrow space of a ship according to claim 1, wherein, The grinding shaft and the gear are connected by a compression ring.

Images