CN112317918A

CN112317918A - Cutting mechanical arm

Info

Publication number: CN112317918A
Application number: CN202011157864.6A
Authority: CN
Inventors: 徐瑞; 何淞霖; 邹也; 贾和平; 翟西礼
Original assignee: Chuzhou Hengrui Technology Development Co ltd
Current assignee: Chuzhou Hengrui Technology Development Co ltd
Priority date: 2020-10-26
Filing date: 2020-10-26
Publication date: 2021-02-05

Abstract

The invention discloses a cutting mechanical arm, which comprises: the holding sleeve is used for being arranged in the steel pipe, a motor is arranged in the holding sleeve, and the motor is close to the inner end of the holding sleeve; the rotating arm is positioned at the inner end of the retaining sleeve, and the inner end of the rotating arm in the radial direction is connected to the motor which is used for driving the rotating arm to rotate; the cutting head is arranged at the radial outer end of the rotating arm and faces the inner wall of the steel pipe so as to cut the steel pipe; and the supporting component is arranged at the outer end of the retaining sleeve and is in contact with the inner wall of the steel pipe so that the retaining sleeve is fixed at the middle part of the steel pipe in the radial direction. The cutting arm can accomplish the cutting to the steel pipe inside the steel pipe, does not occupy exterior space, and does not receive the restriction of steel pipe exterior space environment.

Description

Cutting mechanical arm

Technical Field

The invention relates to a cutting mechanical arm.

Background

In the prior art, a cutting device with the following structure is generally adopted to cut a large-size steel pipe:

the cutting device comprises a host machine positioned outside the steel pipe, a mechanical arm arranged on the host machine and a cutting head (such as a flame cutting head) arranged on the mechanical arm, wherein the mechanical arm drives the cutting head to move along the outer peripheral surface of the steel pipe so that the cutting head can cut inwards from the outer peripheral surface of the steel pipe.

The above cutting method in the prior art has the following defects:

1. when the distance between the bottom of the steel pipe and the ground is small, the robot arm cannot cut the bottom of the outer circumferential surface of the steel pipe due to interference with the bottom of the steel pipe.

2. The cutting device is used for a large external space.

Disclosure of Invention

In view of the above technical problems in the prior art, embodiments of the present invention provide a cutting robot arm.

In order to solve the technical problem, the embodiment of the invention adopts the following technical scheme:

a cutting robot arm, comprising:

the holding sleeve is used for being arranged in the steel pipe, a motor is arranged in the holding sleeve, and the motor is close to the inner end of the holding sleeve;

the rotating arm is positioned at the inner end of the retaining sleeve, and the inner end of the rotating arm in the radial direction is connected to the motor which is used for driving the rotating arm to rotate;

the cutting head is arranged at the radial outer end of the rotating arm and faces the inner wall of the steel pipe so as to cut the steel pipe;

and the supporting component is arranged at the outer end of the retaining sleeve and is in contact with the inner wall of the steel pipe so that the retaining sleeve is fixed at the middle part of the steel pipe in the radial direction.

Preferably, a slide rail is formed on the rotating arm, a slide block is arranged on the slide rail, and the cutting head is arranged on the slide block; wherein:

the cutting head adjusts the radial position by sliding the sliding block on the sliding rail;

the slider is equipped with holding screw outward, holding screw is used for with the slider is fixed the position adjusted.

Preferably, the support assembly comprises:

a central member fixed to an outer end of the retaining sleeve;

support arms comprising three, said three support arms being circumferentially arranged about the periphery of said central member;

and the supporting plate is arranged at the radial outer end of the supporting arm and is used for tightly pressing against the inner wall of the steel pipe.

Preferably, each of the support arms comprises:

the base arm is fixed on the central part, and the outer end of the base arm in the radial direction is provided with a jack;

the telescopic rod is provided with an external thread, and the radial inner end of the telescopic rod extends into the jack and forms a key fit with the jack so that the telescopic rod can stretch and retract and can not rotate;

the driving sleeve is clamped at the radial outer end of the basic arm and can rotate, and the driving sleeve is in threaded fit with the telescopic rod so that the telescopic rod stretches and retracts to adjust the radial size of the supporting arm through rotating the driving sleeve.

Preferably, a bearing is arranged in the retaining sleeve, and the inner end of the rotating arm penetrates through the bearing.

Preferably, the cutting head is a torch cutting head.

Compared with the prior art, the mechanical arm for cutting disclosed by the invention has the beneficial effects that:

1. the cutting arm can accomplish the cutting to the steel pipe inside the steel pipe, does not occupy exterior space, and does not receive the restriction of steel pipe exterior space environment.

2. The length of the support assembly and the rotating arm is adjusted, so that the retaining sleeve can be kept in the center of the steel pipe, and the steel pipe cutter can be suitable for cutting steel pipes with different inner diameters.

The summary of various implementations or examples of the technology described in this disclosure is not a comprehensive disclosure of the full scope or all features of the disclosed technology.

Drawings

In the drawings, which are not necessarily drawn to scale, like reference numerals may describe similar components in different views. Like reference numerals having letter suffixes or different letter suffixes may represent different instances of similar components. The drawings illustrate various embodiments, by way of example and not by way of limitation, and together with the description and claims, serve to explain the inventive embodiments. The same reference numbers will be used throughout the drawings to refer to the same or like parts, where appropriate. Such embodiments are illustrative, and are not intended to be exhaustive or exclusive embodiments of the present apparatus or method.

Figure 1 is a cut-away view of a cutting robot provided by an embodiment of the present invention.

Fig. 2 is an enlarged view of a portion a of fig. 1.

Figure 3 is a cross-sectional view of a cutting robot provided in accordance with an embodiment of the present invention.

Reference numerals:

10-a retaining sleeve; 20-a motor; 30-a rotating arm; 31-a slide rail; 32-a slide block; 33-set screws; 40-a cutting head; 50-a support assembly; 51-a central part; 521-a base arm; 5211-a receptacle; 522-telescopic rod; 523-driving sleeve; 524-a support plate; 100-steel pipe.

Detailed Description

Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the present application do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

To maintain the following description of the embodiments of the present invention clear and concise, a detailed description of known functions and known components of the invention have been omitted.

As shown in fig. 1 to 3, an embodiment of the present invention discloses a cutting robot for being installed in a steel pipe 100 to cut the steel pipe 100.

The cutting arm includes: retaining sleeve 2010, pivot arm 30, cutting head 40, motor, and support assembly 50.

The motor is mounted inside the retaining sleeve 2010, near the inner end of the retaining sleeve 2010 in the axial direction, and the retaining sleeve 2010 is a metal sleeve.

The rotating arm 30 is located at the inner side of the retaining sleeve 2010 in the axial direction, the inner end of the rotating arm 30 in the radial direction is connected to the motor, and a bearing is further installed at the inner end of the retaining sleeve 2010, the rotating arm 30 passes through the bearing, and the bearing is used for forming a rotary supporting effect on the rotating arm 30.

The area of the rotating arm 30 near the outer end in the radial direction is formed with a slide rail 31, and a slider 32 is mounted on the slide rail 31, and the slider 32 can slide in the radial direction along the slide rail 31.

A flame cutting head 40 is selected as the cutting head 40, and the cutting head 40 is arranged on the sliding block 32, so that the cutting head 40 can change the radial position under the matching of the sliding block 32 and the sliding rail 31. The slide block 32 is also provided with a set screw 33, and the head of the set screw 33 is tightened against the slide rail 31 by screwing the set screw 33 so that the cutting head 40 is fixed at the adjusted position.

A support member 50 is mounted to the outer end of the retaining sleeve 2010. the support member 50 includes a central member 51 and three support arms.

The central member 51 is secured to the outer end of the retaining sleeve 2010 and three support arms are circumferentially disposed about the periphery of the central member 51. Each support arm comprises a base arm 521, a telescopic rod 522 and a driving sleeve 523.

A base arm 521 is formed on the central member 51, and an insertion hole 5211 is formed at the outer end of the base arm 521; the expansion link 522 is formed with an external thread and with a key groove, the radially inner end of the expansion link 522 is inserted into the insertion hole 5211 of the base arm 521, and the key groove is engaged with a key structure in the insertion hole 5211, so that the expansion link 522 can radially expand and contract but cannot rotate.

The driving sleeve 523 is clamped at the outer end of the basic arm 521 in the radial direction, the driving sleeve 523 can rotate, the telescopic rod 522 penetrates through the driving sleeve 523 and forms threaded fit with the driving sleeve 523, and therefore the length of the whole supporting arm can be adjusted by rotating the driving sleeve 523.

A support plate 524 is fixed to the outer end of the expansion link 522 in the radial direction, and the support plate 524 is configured to contact the inner wall of the steel pipe 100.

The working principle of the cutting mechanical arm is described as follows:

first, the entire apparatus is disposed in the steel pipe 100 with the swivel arm 30 at the inner side and the support assembly 50 at the outer side; the retaining sleeve 2010 is positioned at the center in the radial direction of the duct 100 by rotating the driving sleeve 523 of each support arm to increase the length of the support arm and thereby press the support plate 524 against the inner wall of the duct 100 and equalize the length of each support arm.

Before the device is placed in the steel pipe 100, the length of the rotating arm 30 is adjusted in advance so that the cutting head 40 can be adjacent to the inner wall of the steel pipe 100 after the device is mounted in the steel pipe 100.

After the installation is completed, the cutting head 40 is ignited and the motor is started, and the motor drives the rotating arm 30 to rotate so that the cutting head 40 cuts the steel pipe 100 along the inner wall.

The cutting mechanical arm provided by the invention has the advantages that:

1. the cutting mechanical arm can complete the cutting of the steel pipe 100 in the steel pipe 100, does not occupy the external space, and is not limited by the external space environment of the steel pipe 100.

2. By adjusting the lengths of the support assembly 50 and the swivel arms 30, the retaining sleeve 2010 can be retained at the center of the steel duct 100 and can be adapted to cut steel ducts 100 of different inner diameters.

Moreover, although exemplary embodiments have been described herein, the scope of the present invention includes any and all embodiments based on the present invention with equivalent elements, modifications, omissions, combinations (e.g., of various embodiments across), adaptations or alterations. The elements of the claims are to be interpreted broadly based on the language employed in the claims and not limited to examples described in the present specification or during the prosecution of the application, which examples are to be construed as non-exclusive. It is intended, therefore, that the specification and examples be considered as exemplary only, with a true scope and spirit being indicated by the following claims and their full scope of equivalents.

The above description is intended to be illustrative and not restrictive. For example, the above-described examples (or one or more versions thereof) may be used in combination with each other. For example, other embodiments may be used by those of ordinary skill in the art upon reading the above description. In addition, in the above-described embodiments, various features may be grouped together to streamline the disclosure. This should not be interpreted as an intention that a disclosed feature not claimed is essential to any claim. Rather, inventive subject matter may lie in less than all features of a particular disclosed embodiment. Thus, the following claims are hereby incorporated into the detailed description as examples or embodiments, with each claim standing on its own as a separate embodiment, and it is contemplated that these embodiments may be combined with each other in various combinations or permutations. The scope of the invention should be determined with reference to the appended claims, along with the full scope of equivalents to which such claims are entitled.

The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the scope of the present invention is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present invention, and such modifications and equivalents should also be considered as falling within the scope of the present invention.

Claims

1. A cutting robot arm, comprising:

and the rotating arm is positioned at the inner end of the retaining sleeve, and the inner end of the rotating arm in the radial direction is connected to the motor which is used for driving the rotating arm to rotate.

And the cutting head is arranged at the radial outer end of the rotating arm and faces the inner wall of the steel pipe so as to cut the steel pipe.

2. The cutting mechanical arm according to claim 1, wherein the rotating arm has a slide rail formed thereon, the slide rail having a slider mounted thereon, the cutting head having a cutting head mounted thereon; wherein:

3. The cutting robot arm of claim 1, wherein the support assembly comprises:

a central member fixed to an outer end of the retaining sleeve;

4. The cutting robot arm of claims 1-3, wherein each support arm comprises:

5. The cutting instrument arm of claim 1, wherein a bearing is disposed in the retaining sleeve, and an inner end of the rotating arm is disposed through the bearing.

6. The cutting robot arm of claim 1, wherein the cutting head is a torch cutting head.