CN210480234U - Welding type roller arm and welding positioning tool thereof - Google Patents
Welding type roller arm and welding positioning tool thereof Download PDFInfo
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- CN210480234U CN210480234U CN201920581827.4U CN201920581827U CN210480234U CN 210480234 U CN210480234 U CN 210480234U CN 201920581827 U CN201920581827 U CN 201920581827U CN 210480234 U CN210480234 U CN 210480234U
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Abstract
The utility model discloses a welding type roller arm and welding position frock thereof, interlude (1) including H shape, interlude (1) one end welding has the major part of cylinder to forge piece (2), and the other end welding has the microcephaly of cross section for "omega" shape structure to forge piece (3). The utility model discloses compare in traditional casting type roller arm, welding type roller arm has avoided defects such as casting crackle, tissue porosity, and the quality is guaranteed more easily, and mechanical properties further promotes, more can satisfy the requirement of the upsizing heavy type of equipment, and fixes a position frock clamping location quick, accurate, has reduced the machining allowance in the roller arm course of working for process rate of working has reduced intensity of labour.
Description
The technical field is as follows:
the utility model belongs to the field of machinery, especially, relate to a welding type roller arm and welding position frock thereof.
Background art:
FIG. 1 shows a rotary frame and a trolley (local part) for sintering and pelletizing, wherein the trolley can be turned over by swinging a roller arm to realize ore unloading. As shown in fig. 11, the revolving frame and the trolley are assembled together in number to form a complete circle, the big end of the roller arm is connected with the trolley shaft, the small end is provided with a roller, the revolving frame and the trolley do circular motion in the horizontal plane, the roller does circular motion in the horizontal plane along a track with a specific circumference, and the roller only turns over for discharging during discharging. During working, the roller arm is stressed greatly, once the roller arm is broken, the trolley cannot reset, serious equipment operation accidents are caused, and the requirement on the roller arm is high.
Meanwhile, as the rollers run along a specific track, the mounting positions of the rollers are required to be accurate, so that higher requirements are provided for the machining precision of the roller arms, and the device is beneficial to preventing the rollers from deviating and being worn until the safe running of the whole device is ensured. The roller arm structure is shown in figure 2-1 and figure 2-2 and consists of a large head, a small head and a middle section. The large-head cylindrical hole comprises double key grooves and is connected with the trolley axle; the small-head cylindrical hole is slotted along a bus and used for installing the roller shaft. According to the I shape and design requirements, as can be seen from fig. 2, the central lines of the circular holes of the large head and the small head of the roller arm are positioned on the same plane, the included angle is a, the horizontal distance between the center of the large hole on the right side and the center of the small hole is A, the distance between the center of the large hole on the left side and the center of the small hole is B, and the sizes of the two side surfaces of the large head and the small head. The roller arm usually adopts a casting blank, but the mechanical property of the casting blank is poor, and along with the development trend of equipment upsizing and heaving, the load borne by the roller arm is larger and larger, the requirement on the mechanical property of the roller arm is higher and higher, the common casting quality is difficult to meet the use requirement, the yield is lower, and the existing casting blank roller arm can not adapt to the existing actual requirement gradually.
In addition, the roller arm adopts the welded blank, and how to guarantee the blank size is very critical, and the conventional method of putting the ground sample is original, and the location is less accurate, and is not high in efficiency, inconvenient to operate and high in labor intensity.
The utility model has the following contents:
an object of the utility model is to provide a welding type roller arm and welding position frock thereof, the utility model discloses compare in traditional casting type roller arm, welding type roller arm has avoided defects such as casting crackle, tissue porosity, and the quality is guaranteed more easily, and mechanical properties further promotes, more can satisfy the requirement of the upsizing and heaviness of equipment, and fixes a position frock clamping location quick, accurate, has reduced the processing allowance in the roller arm course of working for process velocity has reduced intensity of labour.
In order to solve the above problem, the technical scheme of the utility model is that:
the utility model provides a welding type roller arm, includes the interlude 1 of H shape, 1 one end welding in interlude has the major part forging 2 of cylinder, and the other end welding has the microcephaly forging 3 that the cross section is "omega" shape structure.
In a further improvement, the H-shaped middle section 1 comprises a middle steel plate 101; a left steel plate 102 is welded to one side of a middle steel plate 101, and a right steel plate 103 is welded to the other side of the middle steel plate.
In a further improvement, both ends and holes of the large-head forging piece 2 and both ends and inner holes of the small-head forging piece 2 are provided with machining allowances.
A welding positioning tool for the welding type roller arm comprises a base plate 5, wherein a first placing surface 6 matched with the end face of a large-head forging piece 2 is fixed at one end of the base plate 5, and a first centering block 4 matched with an inner hole of the large-head forging piece 2 is formed on the first placing surface 6; a second placing surface 7 matched with the small-head forging piece 3 is fixed at the other end of the bottom plate 5, and a second centering block 8 matched with an inner hole of the small-head forging piece 3 is formed on the second placing surface 7; the second placing surface 7 is an inclined surface, and the second placing surface 7 is vertical to the axial direction of the small-head forging piece 3; a first positioning column 14 and a second positioning column 9 respectively matched with the left steel plate 102 and the right steel plate 103 are formed between the first placing surface 6 and the second placing surface 7.
In a further improvement, a third positioning column 10 matched with the middle steel plate 101 is fixed between the first positioning column 14 and the second positioning column 9.
In a further improvement, the forging die further comprises a sample plate 11, and inserting plates 12 which are respectively matched with the large-head forging part 2 and the small-head forging part 3 in an internal control mode are protruded on the sample plate 11.
In a further improvement, the bottom plate 5 is formed with an elongated hole 13, and a bolt or a screw passes through the elongated hole 13 to detachably fix the first placing surface 6 and the second placing surface 7 on the bottom plate 5 respectively.
In a further improvement, the long round hole 13 is a stepped hole.
The utility model has the advantages that:
1. the clamping and positioning are quick and accurate.
2. The positioning size is more accurately controlled by matching the checking template.
3. The welding production efficiency is improved, and the labor intensity is reduced.
4. The method is suitable for batch production, and dimension interchangeability and consistency are ensured.
5. The tool is simple in implementation principle, low in cost, easy to popularize and use and good in effect.
6. The product qualification rate is high, and the inspection time is reduced during batch production.
7. Compared with the conventional method, the method reduces the machining allowance of the large end face, the small end face and the inner hole of the roller arm, and saves the subsequent finish machining cost.
8. Compared with the traditional casting type roller arm, the welding type roller arm avoids the defects of casting cracks, loose tissue and the like, the quality is easier to guarantee, the mechanical property is further improved, and the requirements of equipment large-scale and heavy-duty are better met.
Description of the drawings:
FIG. 1 is a perspective view of a connection structure of a revolving frame, a trolley and a roller arm;
FIG. 2-1 is a schematic perspective view of a roller arm;
FIG. 2-2 is a schematic side view of a roller arm;
FIG. 3 is a schematic diagram of the dimensions of a roll arm blank;
FIG. 4-1 is a schematic top view of a conventional roll arm welding positioning method;
FIG. 4-2 is a schematic side view of a conventional roll arm welding positioning method;
FIG. 5-1 is a schematic perspective view of a large-headed forging;
FIG. 5-2 is a schematic perspective view of a small-headed forging;
FIG. 6 is a schematic illustration of the connection process of the intermediate sections;
FIG. 7 is a schematic structural view of a welding positioning tool for a welding type roll arm in embodiment 2;
FIG. 8 is a schematic structural view of a roller arm in a roller arm welding positioning tool corrected by a template in example 2;
FIG. 9 is a schematic view of an internal structure of a roller arm on the roller arm welding positioning tool;
FIG. 10-1 is a schematic bottom view of the bottom plate according to embodiment 3;
FIG. 10-2 is a schematic side sectional view of the base plate;
fig. 11 is a schematic top view of a connecting structure of the revolving frame, the bogie and the roller arm.
The specific implementation mode is as follows:
in order to make the aforementioned objects, features and advantages of the present invention more comprehensible, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
Example 1
In order to overcome the defect that the casting quality of a casting is difficult to guarantee, a welding type roller arm is developed by the company, the big end is of a cylindrical structure, the small end is of an omega-shaped structure, the middle section of the roller arm is of a structure with an H-shaped section formed by welding three steel plates, the big end and the small end are respectively forged blanks, the middle section of the roller arm is blanked by plates, and the roller arm is integrally welded.
Before welding, proper machining allowance is reserved on two end faces and inner holes of the large head and the small head, as shown in figure 5-1, the middle section is formed by assembling and welding three steel plates, the section is H-shaped, the three steel plates are subjected to numerical control blanking, and no machining allowance is reserved, as shown in figure 6. In order to ensure that a roller arm product with the size meeting the requirements of the figure 2-1 is machined, the machining allowance of each part before welding is considered, the position sizes of the large head, the small head and the middle section are calculated, and then the tool is adopted for positioning welding to ensure the size of a blank. As shown in FIG. 3, machining allowances (shaded parts are machining allowances) are reserved for the sizes C ', D' and the inner holes of the large head and the small head, the machining allowances are determined by a forging process, then theoretical values of the sizes a, A 'and B' can be obtained through conversion by matching with the size C ', D' and the inner holes of the large head and the small head in the figure 2-1, and then the sizes a, A 'and B' are ensured through positioning of welding tools, so that qualified welding blanks of the roller arm can.
In order to weld a roller arm blank with a size meeting the requirement, a method of placing a ground sample is adopted conventionally, as shown in fig. 4-1 and 4-2, four reference points are carved on a platform and respectively correspond to the centers of the end faces of the large head and the small head of the roller arm, and a cushion block is welded on the platform to heighten the small head so that the center lines of the large head and the small head are parallel to the plane of the platform. Before welding the roller arm, firstly, cross central lines are drawn on the end faces of the large end and the small end respectively, the central lines perpendicular to the large end and the small end and the platform are respectively aligned to reference points drawn on a plane during welding, then, the middle section is placed in the roller arm, and the roller arm blank is integrally welded. After the first blank is qualified, a welding positioning block can be additionally arranged on the ground sample to facilitate the determination of the position of each part of the roller arm during the subsequent welding of the roller arm.
Example 2
The welding mode of the roller arm in the embodiment 1 is inaccurate in positioning, low in efficiency, inconvenient to operate and high in labor intensity, and large machining allowance needs to be designed due to the fact that the welding mode is not accurate enough. Therefore, a set of welding type roller arm welding positioning tool is reset.
The design idea of the welding positioning tool for the welding type roller arm is as follows:
a set of tooling and a checking template are designed as shown in figure 7, and all parts of the roller arm are schematically placed and positioned and welded according to figure 8. The bottom die is formed by welding a bottom plate, a centering block and a positioning column into a whole, when the roller arm is positioned and welded, the diameter of a boss of the centering block of the tool is respectively matched with the diameter of an inner hole of a large head and the diameter of an inner hole of a small head of the roller arm, and a first placing surface 6 and a second placing surface 7 are respectively attached to the end surfaces of one side of the large head and the small head of the roller arm; the four short positioning columns are in contact with wing plates (102, 103) of the H-shaped steel at the middle section, and the two long positioning columns are in contact with a web plate (101) of the H-shaped steel at the middle section, as shown in FIG. 9 (for clearly expressing the positioning position of the H-shaped steel at the middle section, the web plate and the positioning columns at one side are omitted). The corresponding relative die size can be calculated from the roll arm blank size in fig. 3.
The first centering block is in the shape of a standard boss, and the second centering block is a standard boss with the bottom surface milled with an inclined surface or a second placing surface arranged with an inclined surface as shown in fig. 10-2. The specific size of the centering block for a certain item is determined according to the requirements of fig. 3 and 9 as shown in fig. 10-2, and the centering block is separately formed by finish machining before welding, then the cross center line is drawn, arranged according to fig. 9 and welded into a whole.
Because the centering blocks are processed independently before welding, the centering blocks with different sizes can be prepared according to the roller arms with different sizes, and the manufacture is very convenient;
and (3) positioning and welding the roller arm: matching the inner hole of the big head with the boss of the first centering block, and tightly attaching the end surface of one side of the big head to the first placing surface of the tool; positioning the small head on the tool according to the same method; then, the web plate of the H-shaped steel at the middle section is placed between the large head and the small head, and the web plate is positioned with the large head and the small head by using the long positioning column in the figure 9; then the wing plate of the H-shaped steel in the middle section is put in, and the web plate is positioned and welded with the large head, the small head and the wing plate by utilizing the short positioning column in the figure 9. After the large head, the small head and the middle section are positioned and welded, the protruding parts of the verification sample plate are respectively inserted into the inner holes of the large head and the small head, the positioning accuracy is further verified, and all the parts are welded into a whole after the positioning is determined to be accurate. Before welding, the blank and the plate of the forging are required to be subjected to nondestructive testing to be qualified, then the blank and the plate are welded into a whole, and after the blank and the plate are welded into the whole, the next machining procedure can be carried out only if the nondestructive testing of each welding line is qualified.
Example 3
The scheme of embodiment 2 is that the positioning blocks are welded on the bottom plate to determine the center size, and the adjustable structure for assembling the centering blocks on the bottom plate can be designed, as shown in fig. 10-1 and 10-2, threaded holes are formed in the centers of the first centering block and the second centering block, a step slot is formed in the back face of the bottom plate, the first centering block and the second centering block are fastened with the bottom plate through hexagon socket head cap screws, and the center distance L between the positioning blocks is adjustable due to the fact that the positioning blocks are fastened through screws.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. The utility model provides a welding type roller arm, includes interlude (1) of H shape, its characterized in that, interlude (1) one end welding has cylindrical major part forging (2), and the other end welding has the microcephaly forging (3) that the cross section is "omega" shape structure.
2. Welding-type roll arm according to claim 1, characterized in that the H-shaped middle section (1) comprises a middle steel plate (101); one side of the middle steel plate (101) is welded with a left steel plate (102), and the other side is welded with a right steel plate (103).
3. Welding type roll arm according to claim 1, characterized in that both ends and holes of the big head forging (2) and both ends and inner holes of the small head forging (2) are provided with machining allowance.
4. A welding positioning tool for a welding type roller arm according to any one of claims 1-3, characterized by comprising a base plate (5), wherein a first placing surface (6) matched with the end surface of the large-head forging piece (2) is fixed at one end of the base plate (5), and a first centering block (4) matched with the inner hole of the large-head forging piece (2) is formed on the first placing surface (6); a second placing surface (7) matched with the small head forging piece (3) is fixed at the other end of the bottom plate (5), and a second centering block (8) matched with an inner hole of the small head forging piece (3) is formed on the second placing surface (7); the second placing surface (7) is an inclined surface, and the second placing surface (7) is vertical to the axial direction of the small-head forging piece (3); a first positioning column (14) and a second positioning column (9) which are respectively matched with the left steel plate (102) and the right steel plate (103) are formed between the first placing surface (6) and the second placing surface (7).
5. The welding positioning tool for the welding type roller arm according to claim 4, characterized in that a third positioning column (10) matched with the middle steel plate (101) is fixed between the first positioning column (14) and the second positioning column (9).
6. The welding positioning tool for the welding type roller arm according to claim 4, further comprising a sample plate (11), wherein insert plates (12) which are matched with inner holes of the large-head forged part (2) and the small-head forged part (3) respectively are arranged on the sample plate (11) in a protruding mode.
7. The welding positioning tool for the welding type roller arm according to claim 4, wherein an oblong hole (13) is formed in the bottom plate (5), and a bolt or a screw penetrates through the oblong hole (13) to detachably fix the first placing surface (6) and the second placing surface (7) on the bottom plate (5) respectively.
8. The welding type roll arm welding positioning tool according to claim 7, wherein the long round hole (13) is a stepped hole.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581827.4U CN210480234U (en) | 2019-04-26 | 2019-04-26 | Welding type roller arm and welding positioning tool thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920581827.4U CN210480234U (en) | 2019-04-26 | 2019-04-26 | Welding type roller arm and welding positioning tool thereof |
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| CN210480234U true CN210480234U (en) | 2020-05-08 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110203712A (en) * | 2019-04-26 | 2019-09-06 | 湖南中冶长天重工科技有限公司 | A kind of solder type roller arm and its welding positioning tool |
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2019
- 2019-04-26 CN CN201920581827.4U patent/CN210480234U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110203712A (en) * | 2019-04-26 | 2019-09-06 | 湖南中冶长天重工科技有限公司 | A kind of solder type roller arm and its welding positioning tool |
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