Positioning tire for machining outer arc of mining arc tooth connecting chain ring

Abstract

The utility model provides a positioning tire for machining an outer arc of a mining arc tooth connecting chain ring, which is used for positioning a blank for machining the mining arc tooth connecting chain ring, and comprises an outer arc tire body, an inner arc tire body and an outer arc tire body, the positioning plate is arranged on the outer arc tire body and is matched with the outer arc tooth part of the blank; and the pressing plate is arranged on the positioning plate. According to the positioning tire for machining the outer arc of the mining arc toothed chain ring, the fitting end face which is the same as the blank in shape is arranged on the outer arc tire body, so that the blank is preliminarily positioned, the positioning plate is used for secondarily positioning the blank, the pressing plate is used for clamping the blank, and the problem that the blank is difficult to position in the prior art is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of processing arc toothed chain rings for mining, in particular to a positioning tire for processing outer arcs of arc toothed chain rings for mining. Background Art

[0002] Arc tooth connecting chain ring is an important part in the transmission structure of scraper conveyor in coal mines. It is a vulnerable part during use, with a high replacement frequency and large usage. Improving the quality and production efficiency of the connecting chain ring can reduce the frequency of scraper conveyor shutdown, thereby increasing the production capacity of coal mines.

[0003] The current mining arc tooth chain ring is very difficult to process due to its special shape. One of the main difficulties in processing is that the mining arc tooth chain ring has high precision requirements. During the production process, the blank of the mining arc tooth chain ring needs to be repeatedly positioned. When the positioning is inaccurate, it will cause processing errors and affect the service life of the mining arc tooth chain ring. Utility Model Content

[0004] The utility model aims to solve the problem in the prior art that the blank of the arc tooth connecting chain ring for mining is difficult to position during the processing.

[0005] In order to achieve the above-mentioned purpose, the present application proposes a positioning tire for outer arc processing of arc tooth chain ring for mining, which is used for positioning the blank. The blank includes: an arc portion, an outer arc tooth portion, an outer arc connecting portion and an inner arc portion. It is characterized in that the positioning tire includes: an outer arc tire body; a positioning plate arranged on the outer arc tire body and cooperating with the outer arc tooth portion of the blank; and a pressure plate installed on the positioning plate by bolt fasteners.

[0006] The present application discloses a positioning tire for processing the outer arc of an arc toothed chain ring for mining. The positioning tire has a fitting end face with the same shape as the blank on the outer arc tire body, thereby completing the initial positioning of the blank. The positioning plate completes the secondary positioning of the blank. The pressure plate completes the clamping of the blank, thereby solving the problem of difficulty in positioning the blank in the prior art.

[0007] Furthermore, the outer arc carcass includes: a mounting portion and a positioning portion, the mounting portion is provided with a threaded through hole, and the back of the mounting portion is provided with a step surface for mounting the outer arc carcass on a machine tool, and the positioning portion is provided on the front of the mounting portion and away from one end of the above-mentioned step surface.

[0008] Furthermore, the positioning portion includes a first end face, a second end face, a third end face and a fourth end face, wherein the first end face, the second end face and the third end face are respectively fitted with the surfaces of the arc portion, the outer arc tooth portion and the outer arc connecting portion, the third end face is an arc shape, the fourth end face is a plane, and the fourth end face is tangent to the third end face, wherein the angle between the first end face and the second end face is the same as the angle of the outer arc tooth portion and the outer arc connecting portion in the mining chain link blank.

[0009] Furthermore, in order to achieve a second positioning of the blank, the positioning plate includes: a positioning plate body; a first arc tooth positioning portion and a second arc tooth positioning portion arranged on both sides of the upper part of the positioning plate body; a first positioning hole, a second positioning hole and a mounting hole arranged on the positioning plate body.

[0010] Furthermore, in order to better fix the pressing plate, the thickness of the positioning plate is greater than the thickness of the blank, providing an installation position for the groove of the pressing plate.

[0011] Furthermore, in order to prevent the pressing plate from slipping during the processing of the blank, the pressing plate includes a pressing plate body and a groove arranged on the pressing plate, wherein a threaded through hole is arranged on the groove.

[0012] The beneficial effects of this application are:

[0013] 1. A positioning tire for processing the outer arc of an arc-toothed chain ring for mining in the present application completes the initial positioning of the blank by setting a fitting end face with the same shape as the blank on the outer arc tire body. The arc-toothed positioning portion arranged on the positioning plate has the same shape as the inner teeth of the chain ring. The arc-toothed positioning portion on the positioning plate is clamped into the inner teeth on the blank to complete the secondary positioning of the blank. The pressure plate completes the clamping of the blank, which solves the problem of difficult positioning of the blank in the prior art. It has a simple structure and is easy to install, and can effectively reduce the difficulty of positioning the blank during the processing process.

[0014] 2. The pressure plate of the present application is provided with a groove, and one end of the groove is clamped on the positioning plate, which can improve the stability of the pressure plate, especially when the positioning tire is rotating or other movements, which can effectively prevent the pressure plate from being displaced. The other end of the groove is pressed on the blank, which can prevent the problem of sliding caused by the uneven surface of the positioning plate resulting in too little clamping force of the pressure plate on the blank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is a schematic diagram of the assembly structure of a positioning tire for processing the outer arc of a mining arc toothed chain ring in an embodiment of the present application;

[0017] Figure 2 This is a schematic diagram of the structure of the outer arc carcass in the embodiment of the present application;

[0018] Figure 3 This is a schematic structural diagram of the back of the outer arc carcass in an embodiment of the present application;

[0019] Figure 4 This is a schematic diagram of the structure of the positioning plate in the embodiment of the present application;

[0020] Figure 5 This is a schematic diagram of the structure of the pressing plate in the embodiment of the present application;

[0021] Figure 6 This is a schematic diagram of the structure of the blank in the embodiment of the present application;

[0022] Description of reference numerals:

[0023] 1. outer arc carcass; 11. mounting portion; 12. positioning portion; 121. first end surface; 122. second end surface; 123. third end surface; 124. fourth end surface;

[0024] 2. Positioning plate; 21. Positioning plate limiting part; 22. Blank limiting part;

[0025] 3. Small pressing plate;

[0026] 4. Large pressing plate;

[0027] 5. Blank; 51. Arc portion; 52. Outer arc portion; 53. Outer arc portion. DETAILED DESCRIPTION

[0028] The following will be combined with the attached Figures 1 to 5 The embodiments of the technical solution of the present application are described in detail. The following embodiments are only used to more clearly illustrate the technical solution of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application. In addition, the technical features involved in each embodiment of the present application described below can be combined with each other as long as they do not conflict with each other.

[0029] Please refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 The present embodiment provides a positioning tire for processing the outer arc of an arc toothed chain link for mining, comprising an outer arc tire body 1, a positioning plate 2 and a pressing plate 3. The outer arc tire body 1 is used for positioning a blank 4, and the blank 4 comprises an arc portion 41, an outer arc tooth portion 42, an outer arc connecting portion 43 and an inner arc portion 44. The outer arc tire body 1 comprises a mounting portion 11 and a positioning portion 12, a threaded through hole is provided on the mounting portion 11, and a step surface for mounting the outer arc tire body 1 on a machine tool is provided on the back of the mounting portion 11.

[0030] In one embodiment of the present application, the positioning portion 12 on the outer arc carcass 1 performs preliminary positioning on the blank 4, the positioning plate 2 performs secondary positioning on the blank 4, and the pressure plate 3 installs the positioning plate 2 and the blank 4 on the outer arc carcass 1 through bolt fasteners.

[0031] In the prior art, the blank is usually positioned by using a rotating disc and a fixture. However, the rotating disc and the fixture have high requirements for concentricity. It is difficult for the rotation center to be consistent with the machining center of the workpiece. Any eccentricity will cause the workpiece to vibrate during rotation, affecting the machining quality. Therefore, regular maintenance and calibration of mechanical components are required to ensure their accuracy and reliability. At the same time, due to the complex tooth shape of the chain link, specially designed fixtures are required, which increases cost and complexity.

[0032] In this embodiment, since the positioning portion 12 includes a first end face 121, a second end face 122, a third end face 123 and a fourth end face 124, wherein the first end face 121, the second end face 122, and the third end face 123 are respectively fitted with the surfaces of the outer arc tooth portion 42, the outer arc connecting portion 43, and the circular arc portion 41, the blank 4 can be initially positioned through such fitting, and at the same time, an arc tooth positioning portion with the same shape as the inner tooth is provided on the positioning plate 2, and the second positioning of the blank 4 is completed by the cooperation of the inner tooth and the outer tooth, thereby solving the problem of high requirements on the centering of rotating discs, clamps and other devices in the prior art.

[0033] Continue to refer to Figure 2 , both the first end face 121 and the second end face 122 are planes, and the angle between the first end face 121 and the second end face 122 is the same as the angle of the outer arc tooth portion and the outer arc connecting portion in the mining chain link blank. Such a setting is convenient for installing the blank, and by making the outer arc tooth portion 42 and the outer arc connecting portion 43 on the blank close to the first end face 121 and the second end face 122, the preliminary positioning of the blank can be achieved; the third end face 123 is arc-shaped, the fourth end face is a plane, and the fourth end face 124 is tangent to the third end face 123, which conforms to the tangent structural characteristics of the arc portion 41 and the outer arc connecting portion 43 in the blank 4.

[0034] Continue to refer to Figure 4 The positioning plate 2 in the present application includes: a positioning plate body 21; a first arc tooth positioning portion 22 and a second arc tooth positioning portion 23 arranged on both sides of the upper part of the positioning plate body 21; a first positioning hole 24, a second positioning hole 25 and a mounting hole 26 arranged on the positioning plate body 21, wherein the first arc tooth positioning portion 22 and the second arc tooth positioning portion 23 are respectively installed on the outer teeth at both ends of the blank that have been processed, thereby completing the secondary positioning of the blank 4.

[0035] Continue to refer to Figure 5The pressing plate 3 includes a pressing plate body 31 and a groove 32 provided on the pressing plate 3, wherein a threaded through hole is provided on the groove 32. The pressing plate 3 is mounted on the positioning plate 2 by means of bolt fasteners. In this embodiment, the pressing plate 3 and the positioning plate 2 are fixed to the outer arc carcass 1 by screwing the bolts into the threaded through holes, and the groove on the pressing plate 3 can be stuck on the protruding plane of the positioning plate 2 relative to the blank 4 during use, so as to prevent the pressing plate 3 from being displaced during the processing of the blank 4.

[0036] When the positioning tire of the present application is used, the blank 4 is placed in the positioning tire so that the arc portion 41, the outer arc tooth portion 42, and the outer arc connecting portion 43 of the blank are in contact with the first end face 121, the second end face 122, and the third end face 123 of the positioning portion 12. Then, the positioning plate 2 is installed on the positioning portion 12 so that the first arc tooth positioning portion 22 and the second arc tooth positioning portion 23 of the positioning plate are matched with the outer arc tooth portion 42 of the blank. Finally, the pressing plate 3 is installed on the positioning plate 2, and the pressing plate is fastened to the positioning plate 2 by bolt fasteners, thereby fixing the position of the blank 4 in the positioning tire.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A positioning tire for processing the outer arc of an arc toothed chain ring for mining, used for positioning a blank (4), the blank (4) comprising: The tire comprises an arc portion (41), an outer arc tooth portion (42), an outer arc connecting portion (43) and an inner arc portion (44), characterized in that the positioning tire comprises: an outer arc tire body (1); a positioning plate (2) arranged on the outer arc tire body (1) and matching with the outer arc tooth portion (42) of the blank (4); and a pressure plate (3) installed on the positioning plate (2) by bolt fasteners.

2. The positioning tire for processing the outer arc of the arc toothed chain ring for mining according to claim 1, characterized in that: The outer arc carcass (1) comprises: a mounting portion (11) and a positioning portion (12); the mounting portion (11) is provided with a threaded through hole, and the back of the mounting portion (11) is provided with a step surface for mounting the outer arc carcass (1) on a machine tool; the positioning portion (12) is provided on the front of the mounting portion (11) and away from one end of the step surface.

3. The positioning tire according to claim 2, characterized in that: The positioning portion (12) comprises a first end face (121), a second end face (122), a third end face (123) and a fourth end face (124), wherein the first end face (121), the second end face (122) and the third end face (123) are respectively fitted with the surfaces of the circular arc portion (41), the outer arc tooth portion (42) and the outer arc connecting portion (43); the third end face (123) is in the shape of a circular arc; the fourth end face is a plane; and the fourth end face (124) is tangent to the third end face (123).

4. The positioning tire according to claim 1, characterized in that: The positioning plate (2) comprises: a positioning plate body (21); a first arc-tooth positioning portion (22) and a second arc-tooth positioning portion (23) arranged on both sides of the upper portion of the positioning plate body (21); and a first positioning hole (24), a second positioning hole (25) and a mounting hole (26) arranged on the positioning plate body (21).

5. The positioning tire according to claim 1, characterized in that: The thickness of the positioning plate (2) is greater than the thickness of the blank (4).

6. The positioning tire according to claim 1, characterized in that: The pressing plate (3) comprises a pressing plate body (31) and a groove (32) provided on the pressing plate (3), wherein a threaded through hole is provided on the groove (32).

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