CN201159678Y

CN201159678Y - Macrotype nut screwing torsion metering installation

Info

Publication number: CN201159678Y
Application number: CNU200720015881XU
Authority: CN
Inventors: 卜育才
Original assignee: ZHONGYUAN SHIPPING ENGINEERING GROUP Co Ltd
Current assignee: COSCO Guangdong Shipyard Co., Ltd.
Priority date: 2007-11-12
Filing date: 2007-11-12
Publication date: 2008-12-03
Anticipated expiration: 2017-11-12

Abstract

Disclosed is a large nut screwing torque metering device which relates to the large nut screwing torque metering technical field in the ship building industry; the metering device mainly comprises a steel rope with a shackle, a dynamometer, a ring-shaped base with a convex arm, a positioning device and an adjustable pull rod; the dynamometer is connected with the steel rope through the shackle; one end of the steel rope is tied to the straining hole at the rear end of a nut screwing spanner; the other end is tied to the limit hole of the adjustable pull rod; the adjustable pull rod is positioned at the top end of the convex arm of the ring-shaped base; the length of the adjustable pull rod is adjustable; the positioning device is fixed on the ring-shaped base; the ring-shaped base is nested on the large nut through the positioning device; the center of the ring-shaped base is coincident with the axial center of the large nut; during the continual screwing process of the large nut, though the relative position of the nut changes continuously, the steel rope is always perpendicular to the medial axial line of the screwing spanner; thereby, the screwing moment of the nut is enabled to be unchanged and the screwing torque can be metered conveniently. The large nut screwing torque metering device has the advantages of convenient assembly, simple and visual operation method, high accuracy, low device cost and easy manufacturing.

Description

A kind of large-scale nut screw application torque metering device

Technical field

The utility model relates to shipbuilding or the medium-and-large-sized nut of other industrial and agricultural productions screws the torque measurement technical field, relates in particular to a kind of large-scale nut screw application torque metering device.

Background technology

In shipbuilding or other industrial and agricultural productions, occur some substantial equipment sometimes and large-scale nut need be installed with fastening parts above it.For example, in shipbuilding, often can use large-scale nut, with large parts such as fastening screw propeller, rudder stock, the rudder tips, and the torque measurement (or metering) that screws large-scale nut is very difficult, and bigger mainly due to the large-scale nut yardstick, diameter is usually more than 500mm, and the external form majority is designed to circle, can not use torque spanner; Adopt the mode of dynamometer (power is taken advantage of the arm of force) also to have obvious defects, promptly, because it is bigger to screw power, often to do the power source with the bottle gouard moved by hands that is fixed in a certain position, and large-scale nut constantly changes relative position in screwing process, exerting all one's strength can't keep vertical mutually with the form arm of force, thereby there are bigger error in moment of torsion and actual torque that metering is come out.In view of this, present most of shipyard majorities come urgent these large-scale nuts with the method that manpower is beaten, and make the large-scale nut screw moment of torsion can't obtain at all, whether urgent can only judge by rule of thumb, and precision is very poor.

The utility model content

The purpose of this utility model provides a kind of large-scale nut screw application torque metering device, and it has easy for installation, using method simple, intuitive, precision is higher, equipment cost is low, the advantage of easy making.

In order to achieve the above object, the technical solution of the utility model is as follows:

A kind of large-scale nut screw application torque metering device, mainly by the wire rope of being with shackle, dynamometer, ring-like seat with protruding arm, locating device, composition such as adjustable drawbar and wire rope, dynamometer is connected on the wire rope by shackle, one end of wire rope lies in nut and screws in the tension hole of spanner tail end, the other end lies in the spacing hole of adjustable drawbar, one end of wire rope also lies in spacing hole, adjustable drawbar is positioned at the top of the protruding arm of ring-like seat, its length can be regulated, locating device is fixed on the ring-like seat, ring-like seat is fixed by positioning device on large-scale nut, and the axis coinciding of its center and large-scale nut.

Above-mentioned locating device is made up of at least three bolts, and bolt is evenly distributed on the circumference of ring-like seat; When the axis coinciding of ring-like center and large-scale nut, each bolt all points to the center of ring-like seat and lock onto on the circumference of ring-like seat.

Above-mentioned locating device is made up of at least three bolts, and bolt is distributed on the circumference of ring-like seat, and wherein, the center of three ring-like relatively seats of bolt is mutually 120 °, and all the other bolts also are arranged on the circumference equably; When the axis coinciding of ring-like center and large-scale nut, each bolt all points to the center of ring-like seat and lock onto on the circumference of ring-like seat.

The front end of above-mentioned bolt can be fixed a round roller, and the direction of power is pointed to the place, axle center of large-scale nut in the time of can making bolt stressed like this.

Above-mentioned locating device can also be the plate that an annulus or center have circular hole, the diameter the when diameter of described annulus or the diameter of circular hole equal annulus or circular hole and just be locked large-scale nut, and the center of annulus or circular hole overlaps with the center of ring-like seat.Like this, when locating device was enclosed within on the large-scale nut, the center of ring-like seat had just overlapped with the center of large-scale nut, and ring-like seat also is enclosed on the large-scale nut and can have rotated with large-scale nut.

The beneficial effects of the utility model are as follows: on large-scale nut, behind the locating device location, measuring apparatus can be used with ring-like cover for seat, and therefore, large-scale nut screw application torque metering device of the present utility model is easy for installation, the using method simple, intuitive; In the large-scale nut screw process, the wire rope that is connected with dynamometer and nut screw the spanner axis and remain vertically, and promptly the arm of force of large-scale nut screw moment of torsion is constant all the time, and therefore, measuring apparatus measuring accuracy of the present utility model is than higher; The building block majority of measuring apparatus is made by steel plate or rod iron, and simple shape, therefore, and measuring apparatus low cost of manufacture of the present utility model, and make easily.

Description of drawings

Fig. 1 is the structural representation of the utility model large-scale nut screw application torque metering device.

Fig. 2 is the user mode synoptic diagram of the utility model before the large-scale nut rotation.

Fig. 3 is the user mode synoptic diagram of the utility model in the large-scale nut screw process.

Among the figure: 1, the wire rope of band shackle, 2, dynamometer, 3, ring-like seat, 4, bolt, 5, adjustable drawbar, 6, spacing hole, 7, protruding arm, 8, nut screws spanner, 9, the tension hole, 10, large-scale nut, 11, wire rope, L, the arm of force.

Embodiment

Below in conjunction with accompanying drawing the utility model is done description in further detail:

As shown in Figure 1 to Figure 3, large-scale nut screw application torque metering device is mainly by the wire rope 1, dynamometer 2 of band shackle, form with 3, three bolts 4 of ring-like seat of protruding arm and adjustable drawbar 5 etc.Wherein, wire rope 1, dynamometer 2 and the wire rope 11 of band shackle are the standardized components that can buy on the market, and remaining part is made by steel plate or rod iron.

The using method of large-scale nut screw application torque metering device of the present utility model is as follows:

1) according to conventional method existing nut is being screwed after spanner 8 is installed on the large-scale nut 10, ring-like seat 3 with protruding arm is set on the large-scale nut 10, regulate three bolts 4, make the center of ring-like seat 3 and the axis coinciding of large-scale nut 10, lock three bolts ring-like seat 3 can be rotated synchronously with large-scale nut 10;

2) end that wire rope 1 is connected with dynamometer 2 lies in nut and screws in the tension hole 9 of spanner 8 tail ends, regulate the length of the adjustable drawbar 5 on protruding arm 7 tops on the ring-like seat 3, it is vertical to make wire rope 1 and nut screw the axis of spanner 8,90 ° of angles, and locking adjustable drawbar 5, simultaneously, the other end of wire rope 1 is lain in the spacing hole 6 on the adjustable drawbar 5;

3) wire rope 11 is lain in the spacing hole 6, with pulling wire rope 11 such as chain blocks, nut screws spanner 8, large-scale nut 10 and will rotate synchronously with the ring-like seat 3 of protruding arm, in this process, the relative position of large-scale nut 10 constantly changes, and remains vertical but wire rope 1 is connected with an end of dynamometer 2 with the axis that nut screws spanner 8;

4) read the registration of dynamometer 2, and write down reading;

In the process that large-scale nut 10 constantly screws, remain vertical because wire rope 1 is connected with an end of dynamometer 2 with the axis that nut screws spanner 8, so, large-scale nut 10 screw arm of force L, the axle center that is large-scale nut 10 screws the distance that spanner 8 tail ends are strained the mooring points of wire rope 1 in the hole 9 to nut, all the time constant, the torque value that screws of large-scale nut 10 just equals the reading of above-mentioned dynamometer 2 and the product of arm of force L like this.

5) when above-mentioned torque value satisfies technological requirement, large-scale nut 10 is promptly finished and is screwed.

From as can be seen above-mentioned, the ingenious design of the utility model large-scale nut screw application torque metering device makes large-scale nut in the process that constantly screws, its relative position was constantly changed, but the wire rope that is connected with dynamometer remains vertical with the axis that nut screws spanner, therefore guaranteed large-scale nut to screw arm of force L constant all the time, the screwing torque value and just can calculate easily of large-scale nut promptly screws torque value and equals the reading of dynamometer and the product of arm of force L like this.

Claims

1, a kind of large-scale nut screw application torque metering device, it is characterized in that, this device is mainly by the wire rope (1) of being with shackle, dynamometer (2), ring-like seat (3) with protruding arm, locating device, adjustable drawbar (5) and wire rope (11) are formed, dynamometer (2) is connected on the wire rope (1) by shackle, one end of wire rope (1) lies in nut and screws in the tension hole (9) of spanner (8) tail end, the other end lies in the spacing hole (6) of adjustable drawbar (5), one end of wire rope (11) lies in spacing hole (6), adjustable drawbar (5) is positioned at the top of the protruding arm (7) of ring-like seat (3), its length can be regulated, locating device is fixed on the ring-like seat (3), ring-like seat (3) is fixed by positioning device on large-scale nut (10), and the axis coinciding of its center and large-scale nut (10).

2, a kind of large-scale nut screw application torque metering device as claimed in claim 1 is characterized in that, described locating device is made up of at least three bolts (4), and bolt is evenly distributed on the circumference of ring-like seat (3); When the axis coinciding of the center of ring-like seat (3) and large-scale nut (10), each bolt all points to the center of ring-like seat (3) and lock onto on the circumference of ring-like (3).

3, a kind of large-scale nut screw application torque metering device as claimed in claim 1, it is characterized in that, described locating device is made up of at least three bolts (4), bolt is distributed on the circumference of ring-like seat (3), wherein, the center of three ring-like relatively seats of bolt (3) is mutually 120 °; When the axis coinciding of the center of ring-like seat (3) and large-scale nut (10), each bolt all points to the center of ring-like seat (3) and lock onto on the circumference of ring-like (3).

4, as claim 2 or 3 described a kind of large-scale nut screw application torque metering devices, it is characterized in that the front end of described bolt (4) is provided with a round roller.

5, a kind of large-scale nut screw application torque metering device as claimed in claim 1, it is characterized in that, described locating device is the plate that an annulus or center have circular hole, diameter when the diameter of described annulus or the diameter of circular hole equal annulus or circular hole and just be locked large-scale nut (10), and the center of annulus or circular hole overlaps with the center of ring-like seat (3).