WO2013044620A1

WO2013044620A1 - Slewing mechanism and tunneling machine

Info

Publication number: WO2013044620A1
Application number: PCT/CN2012/073760
Authority: WO
Inventors: 史成建; 支建燊; 胡建华
Original assignee: 三一重型装备有限公司; 三一重型综采成套装备有限公司
Priority date: 2011-09-26
Filing date: 2012-04-11
Publication date: 2013-04-04
Also published as: CN102383796B; CN102383796A

Abstract

Disclosed are a slewing mechanism and a tunneling machine. The slewing mechanism is used for driving the rotation of a cutting unit and comprises a body (3), and a rotary table (1) and a drive mechanism used for driving the rotation of the rotary table (1) are disposed on the body (3), wherein the drive mechanism is in a fixed configuration relative to the body (3), and comprises a drive part connected to the rotary table (1) and moving rectilinearly, the drive mechanism being able to convert the rectilinear movement of the drive part moving rectilinearly into the rotary movement of the rotary table (1). The slewing mechanism provided in the embodiments of the present invention uses an oil cylinder (2) with double cylinder bodies (21) as the drive mechanism, wherein, when a piston rod (22) of the oil cylinder (2) extends forwards and retracts backwards, the rotary table (1) is driven in rotation. Since the distance between the piston rod (22) and a rotary shaft of the rotary table (1) remains unchanged, the gyroscopic moment remains stable. Moreover, since the oil cylinder (2) has a transverse arrangement, only a relatively small size is required to be able to drive the rotary table (1) in rotation, and, during operation, the oil cylinder (2) does not follow the rotation of the rotary table (1), the piston rod (22) merely moving between the two cylinder bodies (21).

Description

The invention relates to the priority of the Chinese patent application filed on September 26, 2011, the Chinese Patent Office, the application number is 201110288972.1, and the invention name is "a slewing mechanism and a roadheader", the entire contents of which are The citations are incorporated herein by reference.

Technical field

The invention relates to the technical field of engineering machinery, in particular to a slewing mechanism. The invention also relates to a roadheader having the above-described slewing mechanism.

Background technique

With the rapid development of economic construction, the coal industry is constantly moving towards mechanization and automation. In the mechanized mining operation, the roadheader is one of the main mining equipment, and the tunneling is realized by the rotary cutting of the cutting part.

At present, the rotary table of the rotary table connected to the cutting section mainly adopts a push-pull type and a rack hydraulic cylinder on both sides of the hydraulic cylinder. The schematic diagram of the push-pull type on both sides of the hydraulic cylinder is shown in Fig. 1. The rear ends of the two rotary hydraulic cylinders arranged symmetrically are respectively connected to the frame, and the front ends are respectively connected with the two sides of the rotary table. During the working process, the hydraulic cylinders are pushed one by one. Pulling the rotary table to rotate a certain angle (β angle). The sliding torque of the hydraulic push-pull type is closely related to the rotation angle. Therefore, the torque changes greatly during the turning process. In addition, the hydraulic cylinder push-pull rotary method has a large limitation on the space arrangement of the roadheader, resulting in two rotary cylinders. It is difficult to arrange the fuel tank and the operation console on the side.

The Chinese patent document (Application No. 200810054738.0, publication No. 101251011) discloses a toothed hydraulic cylinder type rotary device, which uses a rack hydraulic cylinder to push a gear mounted on the rotary table to rotate the rotary table by a certain angle, The slewing moment has nothing to do with the rotation angle. However, this solution requires a large lateral arrangement space for the boring machine, which easily causes the rotary cylinder to protrude laterally from the boring machine body, so that the boring machine is not coordinated. In addition, the rotary unit is operated with the rotary cylinder along with the rotary table. Rotation, the space required is large, which is not conducive to the use of small and medium-sized roadheaders, and installation and maintenance are not convenient.

Therefore, it is urgent to improve the existing schemes, and to develop a slewing mechanism with a small change in the turning moment and a small arrangement space and a small moving space.

Summary of the invention

In view of this, in order to keep the turning moment of the slewing mechanism stable, and at the same time reduce the slewing mechanism

Correction page (Article 91) ISA/CN The arrangement space and the activity space, on the one hand, the invention provides a slewing mechanism.

The slewing mechanism is configured to drive the rotation of the cutting portion, and comprises: a body, a rotary table driving mechanism disposed on the body, and a driving mechanism fixedly arranged with respect to the body, the driving mechanism comprising a linear motion driving unit connected to the rotating table The driving mechanism can convert the linear motion of the linear motion driving portion into the rotary motion of the rotary table.

Preferably, the driving mechanism is fixedly mounted on the body.

The driving mechanism is an oil cylinder, and the linear motion driving unit is a piston rod of the oil cylinder, and the piston rod of the oil cylinder can drive the rotating table to rotate when being extended and contracted forward and backward.

Preferably, the rotary table is provided with an elongated hole, and the piston rod of the oil cylinder is provided with a push rod, and one end of the push rod extends into the elongated hole.

Preferably, each of the two ends of the piston rod is provided with a cylinder, and the two cylinders are fixedly mounted on the body.

Preferably, the body is provided with a cylinder mounting seat, and the cylinder mounting seat is provided with a slide rail, and the piston rod of the oil cylinder is provided with a slider matched with the shape of the sliding rail.

Preferably, a spacer sleeve and a lubricating oil passage are disposed between the push rod and the inner wall of the elongated hole. Preferably, the driving direction of the linear motion type driving portion is perpendicular to the rotation axis of the turntable. Preferably, one end of the turntable is provided with a hinge seat for mounting a cutting portion of the roadheader, and the linear motion type driving portion acts on the other end of the turntable opposite to the hinge seat.

In another aspect, the present invention provides a boring machine having the slewing mechanism of any of the above.

The slewing mechanism provided by the present invention and the boring machine having the slewing mechanism are provided with a driving mechanism for the rotary table provided on the main body, and the linear motion driving portion of the driving mechanism is oppositely disposed, and is also convenient for disassembly and maintenance. And because the distance between the drive mechanism and the rotating shaft of the turntable remains unchanged, the stability of the turning moment is also ensured. In a preferred solution, by forming an elongated hole in the turntable and using a double cylinder The oil cylinder is used as a driving mechanism, and the piston rod (linear motion type driving portion) of the oil cylinder is provided with a push rod extending into the elongated hole. When the piston rod of the oil cylinder is extended and contracted forward and backward, the rotary table can be rotated to rotate back and forth at a certain angle. Since the distance between the piston rod (or cylinder) and the rotating shaft of the turntable remains unchanged, when the piston rod pushes the rotary table to rotate, the turning moment Stable, in addition, due to the horizontal arrangement of the cylinder, the rotary table can be rotated by a certain angle with a small size, and during operation, the cylinder does not rotate with the rotary table, and the piston rod only moves between the two cylinders, that is, The arrangement space and the activity space are both small, which facilitates the arrangement of other components on the body. At the same time, it is convenient to repair the swing mechanism.

DRAWINGS

1 is a schematic view showing the principle of a conventional slewing mechanism of a roadheader;

2 is a schematic structural view of a swing mechanism according to an embodiment of the present invention;

Figure 3 is a plan view of Figure 2;

4 is a schematic structural view of a turntable according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a linear motion type driving unit according to an embodiment of the present invention; FIG.

6 is a schematic structural view of a body according to an embodiment of the present invention;

Figure 7 is a cross-sectional view taken along the line A-A in Figure 3 .

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the description and description of specific structures in this section are merely illustrative of specific embodiments and should not be construed as limiting the scope of the invention.

2 is a schematic structural view of a swing mechanism according to an embodiment of the present invention, FIG. 3 is a top view of FIG. 2, and FIG. 4 is a schematic structural view of a turntable according to an embodiment of the present invention. 5 is a schematic structural view of a linear motion type driving unit according to an embodiment of the present invention, FIG. 6 is a schematic structural view of a body according to an embodiment of the present invention, and FIG. 7 is a cross-sectional view taken along line AA of FIG. The following is an example of the application of the swivel mechanism to the roadheader in conjunction with Figs. 2-7.

As shown, the slewing mechanism includes a turret 1, a cylinder 2 and a body 3, wherein: the turret 1 is mounted on the body 3 by a slewing ring, and the turret 1 is rotatable relative to the body 3; one end of the turret 1 is provided for a hinged seat of the cutting machine cutting portion is installed, and the other end of the rotary table 1 opposite to the hinge seat is provided with an elongated hole 11;

The cylinder 2 is fixedly mounted on the body 3. The overall arrangement direction of the cylinder 2 is substantially perpendicular to the rotating shaft of the turntable 1 (i.e., the axis of the slewing bearing). The cylinder 2 includes two cylinders 21 fixedly mounted on the body 3 and disposed at the crucible a piston rod 22 between the bodies 21; a cylinder mounting seat 31 is disposed on the body 3, and a slide rail is disposed on the cylinder mounting seat 31 (the two side plates are arranged in parallel); the piston rod 22 is disposed on the piston rod 22

Correction page (Article 91) ISA/CN a slider 23 matching the shape of the slide rail, when the piston rod 22 moves back and forth, the slider 23 can slide back and forth in the slide rail, and the slider 23 is provided with a push rod 24 (generally parallel to the rotation shaft of the turntable 1) The upper end of the push rod 24 extends into the elongated hole 11.

During the working process, when the cutting portion of the roadheader needs to be rotated to expand the working range, the piston rod 22 can be driven by the oil cylinder 2 to drive the rotary table to rotate by a certain angle through the slider 23 and the push rod 24, due to the piston rod 22 (or the oil cylinder) 2) The distance from the rotating shaft of the turntable 1 remains unchanged, and therefore, the turning moment of the entire process remains stable.

It should be noted that, in the above embodiment, in order to improve the service life and reduce the wear of the inner wall of the push rod 24 and the elongated hole 11, a spacer 12 may be added between the push rod 24 and the inner wall of the elongated hole 11 to further In order to improve the lubrication effect between the push rod 24 and the spacer 12 or the inner wall of the elongated hole 11 and the spacer and the slider 23 and the slide, a corresponding lubricating oil passage 13 may be disposed on the push rod 24 and the slider 23. .

It should be noted that, in the above embodiment, the elongated hole 11 is disposed at the other end of the turntable 1 opposite to the hinge seat, and the force is better, but in other embodiments, the elongated hole 11 may be provided as needed. It is provided at other positions of the turntable 1 as long as the rotation of the turntable 1 can be achieved.

It should be noted that, in the above embodiment, the rotary table 1 interacts with the oil cylinder 2 (piston rod 22) through the elongated hole 11, but in other embodiments, it can also interact with the oil cylinder 2 by other means, as long as it can be realized. The rotation of the turntable 1 can be performed, for example, a ferrule or an elongated hole-like structure can be welded on the side wall of the turntable 1, and the push rod on the piston rod can be inserted into the ferrule or the elongated hole-like structure. This also enables the rotation of the turntable.

It should be noted that, in the above embodiment, the slider 23 is disposed on (for example, welded to) the piston rod 22, and the push rod 24 is disposed on (for example, welded to) the slider 22, but in other cases, according to needs The slider 23 and the push rod 24 are respectively disposed on (for example, welded to) the piston rod, so that the piston rod 22 can be slid along the slide path on the mounting seat 31, and the rotation of the turntable 1 can be driven by the push rod 24.

It should be noted that, in the above embodiment, in order to achieve a better force effect, the arrangement direction (pushing direction) of the cylinder 2 is perpendicular to the rotating shaft of the turntable 1, but during actual manufacturing or installation, there may be some Deviation, but as long as it does not hinder the implementation of the corresponding function.

It should be noted that, in the above embodiment, in order to achieve a better force effect and limit the living space of the body, the cylinder 2 has two cylinders 21 fixedly mounted on the body 1, but in other

Correction page (Article 91) ISA/CN In this case, it is also possible to use a cylinder having only a single cylinder as needed.

It should be noted that, in the above embodiment, the cylinder 2 is used as the driving mechanism, and accordingly, the piston rod is a linear motion driving portion, and the execution efficiency is high, but in other embodiments, other types may be used as needed. The drive mechanism is not limited to hydraulic drive, and may be, for example, an electric drive linear motion actuator or a pneumatic linear motion actuator (such as a cylinder).

It should be noted that, in the above embodiment, the cylinder 2 is fixedly mounted to the body 3, but in other cases, the cylinder 2 may be fixedly mounted to a member fixedly coupled to the body as needed.

It should be noted that, in the above embodiment, the rotational angle of the turntable 1 can be brought to a predetermined design range by optimizing the positions of the elongated holes 11 and the cylinders 2.

A slewing mechanism for a roadheader according to an embodiment of the present invention, by opening an elongated hole in the turntable and using a cylinder having a double cylinder as a driving mechanism, the piston rod of the cylinder is provided with the piston rod The push rod of the elongated hole, when the piston rod of the oil cylinder is stretched back and forth, can rotate the turntable back and forth by a certain angle, because the distance between the piston rod (or the cylinder) and the rotating shaft of the turntable remains unchanged, when the piston rod pushes the swing When the table rotates, the turning moment remains stable. In addition, due to the lateral arrangement of the cylinder, the turntable can be rotated by a certain angle with a small size, and during operation, the cylinder does not rotate with the turntable, and the piston rod is only in two cylinders. The movement between the bodies, that is, the arrangement space and the activity space are small, which facilitates the arrangement of other components on the body.

The embodiment of the present invention further provides a roadheading machine having the above-mentioned slewing mechanism. Since the above-mentioned slewing mechanism has the above technical effects, the boring machine having the slewing mechanism should also have corresponding technical effects, and the specific The implementation process is similar to the above embodiment, and will not be described again.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are included in the spirit and scope of the present invention, should be included in the present invention. Within the scope of protection.

Correction page (Article 91) ISA/CN

Claims

A slewing mechanism for driving rotation of a cutting portion, comprising: a body disposed on the body, the driving mechanism being fixedly arranged with respect to the body, the driving mechanism comprising a connection with the rotary table The linear motion type driving unit can convert the linear motion of the linear motion type driving unit into the rotary motion of the rotary table.

The slewing mechanism according to claim 1, wherein said drive mechanism is fixedly mounted to said body.

The slewing mechanism according to claim 2, wherein the driving mechanism is an oil cylinder, and the linear motion driving portion is a piston rod of the oil cylinder, and the piston rod can drive the slewing when being extended and contracted forward and backward. The table rotates.

The slewing mechanism according to claim 3, wherein the rotary table is provided with an elongated hole, and the piston rod of the oil cylinder is provided with a push rod, and one end of the push rod extends into the long Inside the hole.

The slewing mechanism according to claim 4, wherein each of the two ends of the piston rod is provided with a cylinder, and both cylinders are fixedly mounted on the body.

The slewing mechanism according to any one of claims 3 to 5, wherein the body is provided with a cylinder mounting seat, the cylinder mounting seat is provided with a slide rail, and the piston rod of the oil cylinder is provided There is a slider that matches the shape of the slide.

The slewing mechanism according to claim 4 or 5, wherein a spacer is provided between the push rod and the inner wall of the elongated hole.

The slewing mechanism according to any one of claims 1 to 5, wherein a driving direction of the linear motion driving portion is perpendicular to a rotation axis of the turntable.

The slewing mechanism according to any one of claims 1 to 5, wherein one end of the turntable is provided with a hinge seat for mounting a boring machine cutting portion, and the linear motion driving portion acts on the The other end of the turntable opposite the hinged seat.

A roadheader, characterized in that the boring machine has the slewing mechanism according to any one of claims 1 to 9.