CN216780434U

CN216780434U - Heading machine main bearing ring radial hole machining and positioning tool

Info

Publication number: CN216780434U
Application number: CN202220235374.1U
Authority: CN
Inventors: 许正根; 杨杰; 麻成标; 解金东; 吴双
Original assignee: China Railway Construction Heavy Industry Group Co Ltd
Current assignee: China Railway Construction Heavy Industry Group Co Ltd
Priority date: 2022-01-28
Filing date: 2022-01-28
Publication date: 2022-06-21
Anticipated expiration: 2032-01-28

Abstract

The utility model provides a tunneling machine main bearing ring radial hole machining and positioning tool which comprises a supporting plate and a scribing component arranged on the supporting plate; the scribing assembly comprises an upper pressing plate and a positioning cutter handle, the upper pressing plate is perpendicular to the supporting plate, and a scribing visual groove convenient for positioning and scribing the radial hole to be machined is formed in the upper pressing plate; one end of the positioning knife handle is coaxial with the central axis of the scribing visual groove, and the other end of the positioning knife handle is used for being connected with a drilling spindle. According to the utility model, the scribing visible groove is aligned with the scribing line of the radial hole to be processed, so that the central axis of the drilling main shaft is aligned with the scribing line of the radial hole to be processed, the drilling position precision during the drilling of the radial hole is effectively ensured, and the central line of the drilled hole is effectively ensured not to deflect.

Description

Heading machine main bearing ring radial hole machining and positioning tool

Technical Field

The utility model relates to the technical field of machining of main bearings of tunneling machines, in particular to a positioning tool and a monitoring method for machining radial holes of main bearing rings of tunneling machines.

Background

The construction of the tunnel boring machine is a main method for constructing urban subway tunnels, river-crossing highway tunnels and river-crossing water or gas pipelines, and a main driving bearing serving as one of core components of the tunnel boring machine provides torque for the rotation of a cutter head and simultaneously bears all thrust of a propulsion system. The main bearing of the heading machine mainly comprises an inner ring and an outer ring of the bearing, three rows of rolling bodies and a retainer, wherein a series of through holes or blind holes such as mounting holes, connecting holes, hoisting holes, taper pin holes, oil holes and the like are designed on the ring, most of the through holes are axial holes, the positioning and drilling precision from the end surface is accurate when the axial holes are machined, but radial holes such as side pressure holes, oil holes and the like are also arranged in the through holes, and the radial holes are machined from the circular arc surface of the outer diameter of the ring, so that the problems of difficult positioning, easy slippage of hole centers, deviation in the drilling process and the like exist. Therefore, the utility model needs to provide a positioning tool for machining the radial hole of the main bearing ring of the heading machine to solve the problems in the prior art.

SUMMERY OF THE UTILITY MODEL

The utility model provides a heading machine main bearing ring radial hole machining and positioning tool which comprises a support plate and a scribing component arranged on the support plate;

the scribing assembly comprises an upper pressing plate and a positioning cutter handle, the upper pressing plate is perpendicular to the supporting plate, and a scribing visual groove convenient for positioning and scribing the radial hole to be machined is formed in the upper pressing plate; one end of the positioning knife handle is coaxial with the central axis of the scribing visual groove, and the other end of the positioning knife handle is used for being connected with a drilling spindle.

Optionally, the visible scribing groove is a long groove, and the central axis of the visible scribing groove is consistent with the central axis of the radial hole to be processed.

Optionally, two ends of the visible groove along the length direction of the visible groove are respectively provided with a key head-shaped structure.

Optionally, the positioning device further comprises a positioning bearing arranged on the supporting plate, the positioning bearing is rotatably arranged at the bottom end of the supporting plate, and the outer surface of the positioning bearing is positioned by being attached to the outer diameter arc surface of the main bearing ring of the heading machine.

Optionally, the positioning bearing is provided with a plurality of positioning bearings arranged in parallel, and the plurality of positioning bearings are respectively arranged in parallel along a direction perpendicular to the central axis of the visible groove of the scribing line.

Optionally, at least one upper pressing plate fixing rib is further arranged between the supporting plate and the upper pressing plate.

Optionally, the upper pressing plate fixing rib is arranged to be a triangular structure, one end of the upper pressing plate fixing rib is fixedly connected with the supporting plate, and the other end of the upper pressing plate fixing rib is fixedly connected with the upper pressing plate.

Compared with the prior art, the utility model has the following beneficial effects:

the marking visible groove is aligned with the marking of the radial hole to be processed, so that the central axis of the drilling main shaft is aligned with the marking of the radial hole to be processed, the drilling position precision during the drilling of the radial hole is effectively ensured, and the central line of the drilled hole is effectively ensured not to deflect.

In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the utility model and, together with the description, serve to explain the utility model and not to limit the utility model. In the drawings:

FIG. 1 is an axial view of a positioning tool for machining a radial hole of a main bearing ring of a heading machine in an embodiment of the utility model;

fig. 2 is an axial schematic view of fig. 1 in use.

Wherein:

1. the main bearing ring comprises a supporting plate, 2, an upper pressing plate, 3, a scribing visual groove, 4, a positioning bearing, 5, a positioning cutter handle, 6, a drilling machine main shaft, 7, an upper pressing plate fixing rib, 8, a main bearing ring outer diameter arc surface, 9 and a main bearing ring end surface.

Detailed Description

Example (b):

referring to fig. 1, the boring machine main bearing ring radial hole machining and positioning tool provided by the utility model comprises a support plate 1 and a scribing component arranged on the support plate 1;

the scribing component comprises an upper pressing plate 2 and a positioning cutter handle 5, the upper pressing plate is perpendicular to the supporting plate 1, and a scribing visual groove 3 convenient for positioning and scribing the radial hole to be machined is formed in the upper pressing plate 2; one end of the positioning tool handle 5 is coaxially arranged with the central axis of the scribing visual groove 3, and the other end of the positioning tool handle 5 is used for being connected with a drilling spindle.

Optionally, the scribing visual groove 3 is configured as an elongated groove, and the central axis of the scribing visual groove 3 is consistent with the central axis of the radial hole to be processed.

Optionally, two ends of the scribing visual groove 3 along the length direction thereof are respectively provided with a key head-shaped structure.

Optionally, in addition to the above structure, the utility model further comprises a positioning bearing 4 arranged on the support plate 1, the positioning bearing 4 is rotatably arranged at the bottom end of the support plate 1, and the outer surface of the positioning bearing 4 is positioned by being attached to the outer diameter arc surface of the main bearing ring of the heading machine.

Optionally, the positioning bearing 4 is provided with a plurality of positioning bearings 4 arranged in parallel, and the plurality of positioning bearings 4 are respectively arranged in parallel along a direction perpendicular to the central axis of the scribing visual slot 3. Preference is given here to: the positioning bearing 4 is preferably provided in two pieces.

Optionally, in order to ensure the connection strength between the supporting plate 1 and the upper pressing plate 2, at least one upper pressing plate fixing rib 7 is further arranged between the supporting plate 1 and the upper pressing plate 2. Preference is given here to: the upper pressure plate fixing rib 7 is preferably arranged to be of a triangular structure, one end of the upper pressure plate fixing rib is fixedly connected with the supporting plate 1, and the other end of the upper pressure plate fixing rib is fixedly connected with the upper pressure plate 2.

Referring to fig. 2, the specific manner of positioning the radial holes using the present invention is as follows:

during specific implementation, a drilling technician firstly performs scribing at a corresponding position of the main bearing ring according to a drilling position;

assembling the boring machine main bearing ring radial hole processing and positioning tool, installing the boring machine main bearing ring radial hole processing and positioning tool on a drilling machine main shaft 6 through a positioning tool shank 5, adjusting the drilling machine direction to enable two positioning bearings 4 to abut against an outer diameter arc surface 8 of a main bearing ring, and simultaneously pressing an upper pressing plate 2 on an end surface 9 of the main bearing ring, so that the axis of the drilling machine main shaft 6 can be ensured to be perpendicular to the outer diameter arc surface 8 of the main bearing ring and penetrate through the central line of the main bearing ring, and the position accuracy of the drilled radial hole is ensured;

after the positioning is completed, the whole positioning tool is dismounted under the condition that the drilling machine spindle 6 is not moved, and an actual drill bit is mounted on the drilling machine spindle 6 to start drilling.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The boring machine main bearing ring radial hole machining and positioning tool is characterized by comprising a support plate (1) and a marking assembly arranged on the support plate (1);

the scribing component comprises an upper pressing plate (2) and a positioning cutter handle (5), the upper pressing plate is perpendicular to the supporting plate (1), and a scribing visual groove (3) convenient for positioning and scribing the radial hole to be machined is formed in the upper pressing plate (2); one end of the positioning knife handle (5) is coaxial with the central axis of the scribing visual groove (3), and the other end of the positioning knife handle (5) is used for being connected with a drilling spindle.

2. The tunneling machine main bearing ring radial hole machining and positioning tool according to claim 1, characterized in that the scribing visual groove (3) is an elongated groove, and the central axis of the scribing visual groove (3) is consistent with the central axis of a radial hole to be machined.

3. The tunneling machine main bearing ring radial hole machining and positioning tool according to claim 2, wherein the two ends of the scribing visual groove in the length direction are respectively provided with a key head-shaped structure.

4. The tunneling machine main bearing ring radial hole machining and positioning tool according to any one of claims 1-3, further comprising a positioning bearing (4) arranged on the support plate (1), wherein the positioning bearing (4) is rotatably arranged at the bottom end of the support plate (1), and the outer surface of the positioning bearing (4) is positioned by being attached to an outer diameter arc surface (8) of the tunneling machine main bearing ring.

5. The boring machine main bearing ring radial hole machining and positioning tool according to claim 4, characterized in that the positioning bearing (4) is provided with a plurality of positioning bearings (4) which are arranged in parallel, and the plurality of positioning bearings (4) are respectively arranged in parallel along a direction perpendicular to the central axis of the scribing line visual groove (3).

6. The tunneling machine main bearing ring radial hole machining and positioning tool according to claim 5, characterized in that at least one upper pressure plate fixing rib (7) is further arranged between the support plate (1) and the upper pressure plate (2).

7. The main bearing ring radial hole machining and positioning tool for the heading machine according to claim 6, wherein the upper pressure plate fixing rib (7) is of a triangular structure, one end of the upper pressure plate fixing rib is fixedly connected with the support plate (1), and the other end of the upper pressure plate fixing rib is fixedly connected with the upper pressure plate (2).