CN109834347B

CN109834347B - Adjustable thread repairing device

Info

Publication number: CN109834347B
Application number: CN201711195352.7A
Authority: CN
Inventors: 赵成涛; 张红; 张奡斐
Original assignee: MCC Baosteel Technology Services Co Ltd
Current assignee: MCC Baosteel Technology Services Co Ltd
Priority date: 2017-11-24
Filing date: 2017-11-24
Publication date: 2020-08-14
Anticipated expiration: 2037-11-24
Also published as: CN109834347A

Abstract

The invention provides an adjustable thread repairing device which comprises a rotary disc and a tensioning device, wherein a plurality of supporting rods are arranged on the rotary disc along the radius direction, through holes are formed in each supporting rod along the direction perpendicular to the disc surface of the rotary disc, the through holes are arranged on the same circumference, connecting rods are respectively arranged in the through holes in a penetrating manner, the connecting rods are hinged with the through holes and can swing along the length direction of the supporting rods, repairing structures capable of rotating along the connecting rods are respectively arranged on the connecting rods, and all the repairing structures are arranged on the same circumference; the tensioning device comprises a base, wherein screw rods which are equal to the support rods in number and correspond to the support rods in position are arranged on the base along the circumferential direction, the screw rods penetrate through the connecting rods on the support rods corresponding to the support rods in position, and adjusting nuts are arranged at one ends, penetrating out of the connecting rods, of the screw rods. The invention can realize the repair work of the internal thread and the external thread on the premise of not disassembling the equipment of the thread, has simple and convenient operation and can ensure the speed and the quality of thread repair.

Description

Adjustable thread repairing device

Technical Field

The invention relates to the field of thread repair of mechanical equipment, in particular to an adjustable thread repair device.

Background

In the mechanical field, a threaded connection is a common connection. When large-size threads are damaged, particularly after internal threads are damaged, the threads are mostly repaired on an off-line machine tool at present; however, under the condition that the construction site can not be offline, only simple manual grinding treatment can be carried out, and then the machine is selected for integral replacement, or the production is directly stopped for integral replacement. In the case of a production line without long-term shutdown, the two ways will have a large impact on the production line.

Therefore, how to solve the problem of repairing large-size threads is a technical problem to be solved by the technical personnel in the field.

Disclosure of Invention

The invention aims to provide an adjustable thread repairing device which is simple to use and can effectively repair threads so as to overcome the defects in the prior art.

In order to solve the technical problems, the invention adopts the following technical scheme: an adjustable thread repairing device comprises a rotary disc and a tensioning device, wherein a plurality of supporting rods are arranged on the rotary disc along the radius direction, each supporting rod is provided with a through hole along the direction vertical to the disc surface of the rotary disc, the through holes are arranged on the same circumference, connecting rods are respectively penetrated in the through holes, the connecting rods are hinged with the through holes and can swing along the length direction of the supporting rods, repairing structures capable of rotating along the connecting rods are respectively arranged on the connecting rods, and all the repairing structures are arranged on the same circumference; the tensioning device comprises a base, wherein screw rods which are equal to the support rods in number and correspond to the support rods in position are arranged on the base along the circumferential direction, the screw rods penetrate through the connecting rods on the support rods corresponding to the support rods in position, and adjusting nuts are arranged at one ends, penetrating out of the connecting rods, of the screw rods.

Preferably, the part of the screw rod between the base and the adjusting nut is sleeved with a spring.

Preferably, four supporting rods on the rotating disc are arranged and are arranged in a cross shape.

Preferably, a driving handle is arranged on the rotating disc.

Preferably, the intermediate position of the connecting rod is hinged on the support rod.

As described above, the adjustable thread repairing device of the present invention has the following beneficial effects:

the tensioning device can be adjusted on the connecting rod, the repairing structure can rotate, when the device is used, the device extends into an inner hole or is sleeved outside a pipe fitting, the repairing work of internal threads and external threads can be realized, the device where the threads are located does not need to be disassembled, the operation is simple and convenient, and the speed and the quality of thread repairing can be ensured. The invention can be used for repairing various devices with internal threads or external threads, and has wide application range.

Drawings

FIG. 1 is a schematic view of a turntable structure according to the present invention.

Fig. 2 is a schematic view of the state of repairing internal threads according to the present invention.

Fig. 3 is a schematic view of the state of the present invention for repairing external threads.

Fig. 4 is a cross-sectional view taken at a-a in fig. 2.

In the figure:

1 turntable 2 tensioning device

3 connecting rod 11 support rod

111 through hole 12 driving handle

21 base 22 screw

23 adjusting nut 24 spring

31 repair structure

Detailed Description

The structures, proportions, and dimensions shown in the drawings and described in the specification are for understanding and reading the present disclosure, and are not intended to limit the scope of the present disclosure, which is defined in the claims, and are not essential to the skilled in the art. In addition, the terms "upper", "lower", "front", "rear" and "middle" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the relative positions may be changed or adjusted without substantial technical changes.

Fig. 1 is a thread repair ware with adjustable, including carousel 1 and overspeed device tensioner 2, carousel 1 is equipped with many spinal branchs branch 11 along the direction of radius, and every spinal branch 11 has all opened through-hole 111 along perpendicular to carousel quotation direction, through-hole 111 is on same circumference, wear to be equipped with connecting rod 3 in the through-hole 111 respectively, connecting rod 3 is articulated and can follow branch length direction swing with the through-hole, but because the limiting action of through-hole 111 size, connecting rod 3 can only swing in a certain angle, and the swing angle generally is 30 ~ 60 degrees. The connecting rods 3 are respectively provided with repair structures 31 capable of rotating along the connecting rods, all the repair structures 31 are on the same circumference, and screwdrivers on all the repair structures 31 are part of rotary threads respectively, so that the threads are repaired simultaneously. The blades of the repaired structure 31 are all directed outward when repairing the internal thread, and the blades of the repaired structure 31 are all directed inward when repairing the external thread. The tensioning device 2 comprises a base 21, the base 21 is provided with screw rods 22 which are equal to the number of the support rods 11 in number and correspond to the positions of the support rods along the circumferential direction, the screw rods 22 penetrate through the connecting rods 3 on the support rods 11 corresponding to the positions, one ends of the screw rods 22 penetrating through the connecting rods 3 are provided with adjusting nuts 23, and the tensioning device 2 is arranged at different positions on the connecting rods 3 according to needs, as will be described later.

When the present invention repairs internal threads, as shown in fig. 2, the tensioning device 2 and the repair structure 31 are respectively on both sides of the turntable 1, i.e., respectively on the upper end and the lower end of the connecting rod 3, and the repair structure 31 faces outward. With reference to fig. 1, 2 and 4, in operation, the adjusting nuts 23 of the tensioning device 2 are all rotated outwards to the edge of the screw 22, the connecting rods 3 are in a swinging state, then one end of the adjusting nut provided with the repairing structure 31 of the invention is inserted into the hole where the internal thread to be repaired is located, one repairing structure 31 is closely attached to the internal thread to be repaired for positioning, next, the other repairing structures 31 are respectively closely attached to preset positions, then, each adjusting nut 23 is rotated inwards in sequence, the connecting rods 3 are pushed towards the center of the rotary table 1 in the rotating process of the adjusting nut 23, and due to the hinging effect, one ends of all the connecting rods 3 provided with the repairing structures 31 are subjected to outward expanding movement which is far away from each other outwards and are closely attached to the internal thread to be repaired, namely, as shown in the arrow direction in fig. 2. When the relative positions of all the repairing structures 31 and the internal threads to be repaired are well adjusted, the connecting rod 3 can not swing any more, and finally the rotating disc 1 is rotated to repair the damaged internal threads. After the repair is completed, all the adjusting nuts 23 are rotated outwards until the connecting rod 3 can swing, and the invention is retracted.

When the external thread is repaired according to the invention, as shown in fig. 3, the tensioning device 2 and the repair structure 31 are on the same side of the turntable 1, i.e. both at the lower end of the connecting rod 3, and the repair structure 31 faces inwards. In connection with fig. 1. In the operation of fig. 3 and 4, the adjusting nuts 23 of the tensioning device 2 are all rotated outwards to the edge of the screw rod 22, the connecting rods 3 are in a swinging state, then one end with the repairing structure 31 of the invention is sleeved on the pipe orifice where the external thread to be repaired is located, one repairing structure 31 is closely attached to the external thread to be repaired for positioning, next, other repairing structures 31 are respectively closely attached to preset positions, then, each adjusting nut 23 is rotated inwards in sequence, the adjusting nut 23 pushes the connecting rod 3 towards the center of the rotary table 1 in the rotating process, because the tensioning device 2 and the repairing structure 31 are on the same side, one ends of all the connecting rods 3 with the repairing structures 31 are folded inwards to be close to the external thread to be repaired, and the connecting rods are closely attached to the external thread to be repaired, namely, the arrow direction in fig. 3 shows. When the relative positions of all the repairing structures 31 and the external threads to be repaired are well adjusted, the connecting rod 3 can not swing any more, and finally the rotating disc 1 is rotated to repair the damaged external threads. After the repair is completed, all the adjusting nuts 23 are rotated outwards until the connecting rod 3 can swing, and the invention is retracted.

As can be seen from the above description and FIGS. 2 and 3, when repairing the internal and external threads, the tensioning device 2 is disposed at different positions of the connecting rods 3, so that each connecting rod 3 is provided with a plurality of through holes to meet the use requirement.

The repairing structure 31 is sleeved on the connecting rod 3, holes corresponding to the positions of the repairing structure 31 and the connecting rod 3 are formed in the repairing structure 31 and the connecting rod 3, the repairing structure 31 and the connecting rod 3 can be locked at two stations through the bolt, the bolt is pulled out to rotate the repairing structure 31 by 180 degrees when the two stations are switched, and then the bolt is inserted.

As shown in fig. 4, the screw 22 is sleeved with a spring 24 at a portion between the base 21 and the adjusting nut 23. When the internal thread is repaired, when the adjusting nut 23 is rotated outwards, the upper end of the connecting rod 3 is pushed outwards under the elastic action of the spring 24, and the lower end of the connecting rod 3 moves inwards, so that the lower end can conveniently stretch into the position of the internal thread to be repaired. In a similar way, when the external thread is repaired, the spring pushes out the lower end of the connecting rod 3 outwards, so that the connecting rod is conveniently sleeved outside the external thread to be repaired.

In the preferred embodiment, as shown in fig. 4, the struts 11 of the turntable 1 are provided in four and are arranged in a cross-shape. When the screw thread repairing device is used, the adjusting nuts 23 on the oppositely arranged support rods 11 are synchronously adjusted, so that the phenomenon that the rotating center deviates and the stress is uneven to influence the screw thread repairing quality is avoided.

As shown in fig. 1, a driving handle 12 is arranged on the turntable 1; the two driving handles 12 are arranged and correspond to each other in position.

Referring to fig. 2 or 3, the middle position of the connecting rod 3 is hinged on the support rod.

The invention is not only used for repairing the internal thread and the external thread of the pipe fitting, but also can be used for repairing other various devices with the internal thread or the external thread, and has wide application range.

In conclusion, the adjustable thread repairing device effectively overcomes some practical problems in the prior art, and has high utilization value and use significance.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Many modifications may be made to the present invention without departing from the spirit or scope of the general inventive concept, and it will be apparent to those skilled in the art that changes and modifications may be made to the above-described embodiments without departing from the spirit or scope of the invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. An adjustable thread repairing device is characterized in that: the rotary table comprises a rotary table (1) and a tensioning device (2), wherein a plurality of supporting rods (11) are arranged on the rotary table (1) along the radius direction, through holes (111) are formed in each supporting rod (11) along the direction perpendicular to the disc surface of the rotary table, the through holes (111) are arranged on the same circumference, connecting rods (3) penetrate through the through holes (111), the connecting rods (3) are hinged with the through holes and can swing along the length direction of the supporting rods, repairing structures (31) capable of rotating along the connecting rods are arranged on the connecting rods (3), and all the repairing structures (31) are arranged on the same circumference; tensioning device (2) include base (21), and base (21) are equipped with screw rod (22) that equal and the position is corresponding with branch (11) quantity along circumference, and connecting rod (3) on branch (11) that position corresponds are passed in screw rod (22), all be equipped with adjusting nut (23) on one end that connecting rod (3) were worn out in screw rod (22).

2. The adjustable thread repair device according to claim 1, wherein: the part of the screw rod (22) between the base (21) and the adjusting nut (23) is sleeved with a spring (24).

3. The adjustable thread repair device according to claim 1, wherein: the supporting rods (11) on the rotary table (1) are four and are arranged in a cross shape.

4. The adjustable thread repair device according to claim 1, wherein: the turntable (1) is provided with a driving handle (12).

5. The adjustable thread repair device according to claim 1, wherein: the middle position of the connecting rod (3) is hinged on the supporting rod (11).