CN219724680U - Quick centering device of on-spot cylinder terminal surface - Google Patents
Quick centering device of on-spot cylinder terminal surface Download PDFInfo
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- CN219724680U CN219724680U CN202321068741.4U CN202321068741U CN219724680U CN 219724680 U CN219724680 U CN 219724680U CN 202321068741 U CN202321068741 U CN 202321068741U CN 219724680 U CN219724680 U CN 219724680U
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- centering device
- face
- rotating shaft
- hinged
- movable ring
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- 210000000078 claw Anatomy 0.000 claims abstract description 31
- 238000011065 in-situ storage Methods 0.000 claims 1
- 238000005553 drilling Methods 0.000 abstract description 7
- 229910000831 Steel Inorganic materials 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
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Abstract
The utility model discloses a quick centering device for a cylindrical end face on site, which comprises a rotating shaft, a fixing frame, at least three supporting rods, connecting rods and a positioning drill rod, wherein the rotating shaft penetrates through a central hole of the fixing frame and is in threaded connection with the fixing frame, a through hole is formed in the rotating shaft along an axis, the positioning drill rod is in clearance fit with the through hole of the rotating shaft, the lower end of the rotating shaft is rotationally connected with a movable ring, first supports, the number of which corresponds to that of the supporting rods, are uniformly arranged on the periphery of the fixing frame, the first supports are hinged with the first ends of the supporting rods, the second ends of the supporting rods are hinged with clamping claws through hinging bolts, the middle part of each supporting rod is hinged with the first ends of the corresponding connecting rods, and the second ends of the corresponding connecting rods are hinged with the movable ring. The centering device drives the movable ring to lift through the rotary shaft, so as to drive the clamping jaw to be fixed on the end face of the field cylinder, the positioning drill rod of the supporting structure can realize quick accurate centering of the end face of the cylinder, the device is convenient to carry and use, the centering accuracy of the end face of the cylinder is high, and the processing accuracy of field drilling is remarkably improved.
Description
Technical Field
The utility model relates to the technical field of positioning devices, in particular to a quick centering device for a cylindrical end face on site.
Background
In the production facilities of various industries, there are many mechanical devices, such as rotor pumps, centrifugal fans, gear boxes, boilers, compressors, hydraulic presses, etc., which are usually composed of many parts and structures, and in connection with these parts, removable connection modes such as bolts, pins, etc. are often used. In the equipment maintenance process, equipment needs to be disassembled and assembled, phenomena such as bolt seizure and pin rust death often occur in the equipment disassembly and assembly process, great difficulty is brought to the disassembly and assembly of production field equipment, and particularly, some large-sized equipment cannot be transferred and only cylindrical bolts, pins and the like can be drilled and taken on site. Before the drilling operation is carried out on the bolt and the pin, the center point of the end face of the bolt and the pin needs to be accurately positioned, otherwise, the equipment body is easily damaged in the drilling process, the whole equipment is seriously possibly scrapped, but the site is limited by conditions, a manual scribing mode of a vernier caliper is generally adopted at present, the positioning precision is insufficient, the later stage needs to be adjusted repeatedly, and the working efficiency is lower.
It should be noted that the foregoing description of the background art is only for the purpose of providing a clear and complete description of the technical solution of the present utility model and is presented for the convenience of understanding by those skilled in the art. The above-described solutions are not considered to be known to the person skilled in the art simply because they are set forth in the background of the utility model section.
Disclosure of Invention
The utility model aims to overcome the defects of the prior art, and provides a quick centering device for a cylindrical end face on site.
In order to achieve the above purpose, the utility model provides a quick centering device for a cylindrical end face on site, which comprises a rotating shaft, a fixing frame, at least three supporting rods, a connecting rod and a positioning drill rod, wherein the rotating shaft penetrates through a central hole of the fixing frame and is in threaded connection with the fixing frame, a through hole is formed in the rotating shaft along an axis, the positioning drill rod is in clearance fit with the through hole of the rotating shaft, the lower end of the rotating shaft is rotationally connected with a movable ring, first supports, the number of which corresponds to that of the supporting rods, are uniformly arranged on the periphery of the fixing seat, the first supports are hinged with the first ends of the supporting rods, the second ends of the supporting rods are hinged with clamping claws through hinge bolts, the middle part of the supporting rods are hinged with the first ends of the connecting rods, and the second ends of the connecting rods are hinged with the movable ring.
Further, a lug is arranged in the middle of the inner side of the claw, and the second end of the supporting rod is hinged with the lug.
Further, the upper end of the claw and the corresponding supporting rod form a V-shaped groove, and an arc-shaped groove is formed in one side, close to the supporting rod, of the upper end of the claw.
Further, the inner side of the second end of the claw is provided with a toothed protrusion.
Further, the movable ring is internally provided with a stepped hole, a thrust bearing is arranged in the stepped hole, and the rotating shaft is rotationally connected with the movable ring through the thrust bearing.
Further, second supports corresponding to the support rods in number are uniformly arranged on the periphery of the movable ring, and the second ends of the connecting rods are hinged with the corresponding second supports.
Further, one end of the rotating shaft far away from the movable ring is connected with a back cap in a threaded manner.
The scheme of the utility model has the following beneficial effects:
the utility model provides a quick centering device for a cylindrical end face on site, wherein a supporting structure supporting rod of the centering device is driven by a connecting rod to be synchronously opened and closed with a movable ring connected with a rotating shaft, so that a positioning drill rod positioned in the center of the rotating shaft is always positioned in the center of the device, the movable ring is driven to lift by manually rotating the rotating shaft, so that a claw is driven to be fixed on the cylindrical end face on site, the positioning drill rod can realize quick accurate centering of the cylindrical end face, the centering accuracy of the cylindrical end face is high, and the processing accuracy of on-site drilling is remarkably improved;
meanwhile, under the condition of limited field conditions, the centering device can quickly center the cylindrical end face at any angle, the equipment is light and convenient to assemble, disassemble and assemble, the carrying and the use of the centering device are convenient, the machining precision of the centering device can also reach the required technical requirements, the great convenience is increased for the broken wire centering and drilling work of the equipment disassembly field, and the working efficiency is improved.
Other advantageous effects of the present utility model will be described in detail in the detailed description section which follows.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present utility model;
FIG. 2 is a side view of the present utility model;
fig. 3 is a cross-sectional view taken along A-A in fig. 2.
[ reference numerals description ]
1-lifting shaft; 2-fixing frames; 3-a first support; 4-supporting rods; 5-a movable ring; 6-connecting rods; 7-clamping jaws; 71-arc grooves; 72-bump; 8-positioning a drill rod; 9-back cap; 10-thrust bearing; 11-a second support.
Detailed Description
The present utility model will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present utility model more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model. The various features and embodiments described in the detailed description may be combined in any suitable manner, for example, different embodiments may be formed by different combinations of features/embodiments, where not contradictory, and various possible combinations of features/embodiments in the present utility model are not described further in order to avoid unnecessary repetition.
It should be noted that the terms "disposed" and "connected" should be construed broadly, and may be, for example, directly disposed, mounted, connected, or indirectly disposed, connected through a central element or central structure. In addition, the directions or positional relationships indicated by "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. in the present utility model are directions or positional relationships based on the drawings or the conventional placement state or use state, are merely for convenience of description of the present utility model and for simplification of description, and do not indicate or imply that the structures, features, devices or elements to be referred to must have specific directions, be configured and operated in specific directions, and thus are not to be construed as limiting the present utility model.
As shown in fig. 1 to 3, the utility model provides a quick centering device for a cylindrical end face on site, which comprises a rotating shaft 1, a fixing frame 2, at least three supporting rods 4, a connecting rod 6 and a positioning drill rod 8, wherein the supporting rods 4 mainly play roles in supporting and positioning, in the embodiment, three supporting rods 4 are preferable, the effects of stable supporting and accurate positioning can be realized, and the structure can be simplified, so that the cost can be saved. Wherein, the center of mount 2 trompil, pivot 1 run through the centre bore of mount 2 and with mount 2 threaded connection, the through-hole has been seted up along the axis on the pivot 1, and location drill rod 8 and the through-hole clearance fit of pivot 1, location drill rod 8 can slide from top to bottom in pivot 1. The rotating shaft 1 is rotationally connected with the movable ring 5: wherein the movable ring 5 is internally provided with a stepped hole, a thrust bearing 10 is arranged in the stepped hole, and one end of the rotating shaft 1, which is close to the movable ring 5, is fixedly connected with the upper end of the thrust bearing 10.
Further, three first supports 3 are evenly arranged on the periphery of the fixing base 2, the first supports 3 are hinged to the first ends of the supporting rods 4, the second ends of the supporting rods 4 are hinged to the clamping claws 7 through hinged bolts, threaded connection nuts are arranged on the hinged bolts, the clamping claws 7 can be fixed to the supporting rods 4 through tightening the nuts, one end, close to the first supports 3, of the middle portion of each supporting rod 4 is hinged to the first ends of the connecting rods 6, the second ends of the connecting rods 6 are hinged to the movable rings 5, and specifically, three second supports 11 are evenly arranged on the periphery of each movable ring 5, and the second ends of the connecting rods 5 are hinged to the corresponding second supports 11, namely, each supporting rod 4 corresponds to one connecting rod 6 to form a connecting rod mechanism. In this embodiment, the hinged position of the supporting rod 4 and the connecting rod 6 is set at the position where the middle part of the supporting rod is close to the first support 3, and the downward movement of the rotating shaft 1 drives the three supporting rods 4 to shrink inwards, so as to drive the clamping jaws 7 to clamp a cylinder (such as a bolt, etc.) with positioning on site, and the three clamping jaws 7 are adjusted to be consistent with the taper of the supporting rod and parallel to the end surface of the cylinder on site, so that the centering of the positioning drill rod 8 to the center position of the end surface of the cylinder on site can be ensured.
In this embodiment, the middle part of the inner side of the claw 7 is provided with a bump 72, the second end of the supporting rod 4 is hinged with the bump 72, meanwhile, the bump 72 protrudes out of the inner side of the claw 7, and after the conicity of the three claws 7 and the supporting rod 4 is adjusted to be consistent, all the bumps 72 can be ensured to be on the same horizontal plane. Further, in order to facilitate consistent taper adjustment of the claw 7, a V-shaped groove is formed at the upper end of the claw 7 and the corresponding supporting rod 4, an arc-shaped groove 71 is formed at one side, close to the supporting rod 4, of the upper end of the claw 7, when the angle of the claw 7 needs to be adjusted, a nut on a hinged screw rod on the claw 7 is firstly opened, steel balls with the same diameter are put into the three V-shaped grooves, the taper of the V-shaped groove is adjusted to enable the steel balls to fall into the bottom, the steel balls are clamped by the arc-shaped groove 71, finally the claw 7 is fixed with the supporting rod 4 through the hinged screw rod, the angle adjustment of the three claw 7 and the corresponding supporting rod 4 is consistent, according to the different sizes of the positioned cylinders, the opening angle of the claw 7 can be adjusted through adjusting the diameter of the put steel balls, and the claw 7 can be quickly adjusted and is suitable for cylinders with different sizes on site. Further, the second end inner side of the claw 7 is provided with a toothed protrusion, and when the claw 7 clamps the cylinder, the toothed protrusion can prevent sliding, so that the clamping is more stable.
Further, one end, far away from the movable ring 5, of the rotating shaft 1 is connected with a back cap 9 through threads, and the rotating shaft 1 can be locked after the back cap 9 is screwed to the fixed seat 2.
When the on-site cylinder end face quick centering device provided by the utility model is specifically used, firstly, steel balls with proper diameters are respectively put into the V-shaped grooves between the clamping claws 7 and the support rods 4 according to the diameter of the cylinder end face to be centered on site, the steel balls are clamped in the arc-shaped grooves 71, then the clamping claws 7 are fixed on the support rods 4 by the fastening nuts, and the cylinder end face can be centered: the lower end faces of the lugs 72 of the three clamping claws 7 are abutted against the on-site cylindrical end face, the level of the three clamping claws 7 and the cylindrical end face is guaranteed, then the rotating shaft 1 is rotated to move downwards, the connecting rod 6 drives the supporting rod 4 to shrink, so that the three clamping claws 7 clamp the periphery of the cylinder, then the back cap 9 is screwed to fix the rotating shaft 1, the position of the positioning drill rod 8 is right opposite to the center of the cylindrical end face at the moment, the purpose of stable clamping is achieved, and finally the center point of the cylindrical end face can be obtained by lightly knocking the upper end of the positioning drill rod 8, or the upper end of the positioning drill rod 8 can be fixed by using clamping tools such as an electric drill, and the positioning drill rod 8 is directly used for drilling the cylindrical end face. After positioning or drilling is finished, the back cap 9 is loosened, the rotating shaft 1 moves upwards, the clamping rotation 7 is opened, and therefore the centering device is moved out, and the on-site cylindrical end face can be centered conveniently, quickly and accurately.
While the foregoing is directed to the preferred embodiments of the present utility model, it will be appreciated by those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the present utility model.
Claims (7)
1. The utility model provides a quick centering device of on-spot cylinder terminal surface, its characterized in that includes pivot (1), mount (2), at least three bracing piece (4), connecting rod (6) and location drill rod (8), pivot (1) run through the centre bore of mount (2) and with mount (2) threaded connection, the through-hole has been seted up along the axis on pivot (1), location drill rod (8) with the through-hole clearance fit of pivot (1), the lower extreme rotation of pivot (1) connects expansion ring (5), the periphery of fixing base (2) evenly be provided with first support (3) that bracing piece (4) quantity corresponds, first support (3) with the first end of bracing piece (4) articulates, the second end of bracing piece (4) articulates through the hinge bolt has jack catch (7), bracing piece (4) middle part with the first end of connecting rod (6) articulates, the second end of connecting rod (6) with expansion ring (5) articulates.
2. The quick centering device for the cylindrical end face on site according to claim 1, wherein a lug (72) is arranged in the middle of the inner side of the claw (7), and the second end of the supporting rod (4) is hinged with the lug (72).
3. The quick centering device for the on-site cylindrical end face according to claim 2, wherein the first end of the claw (7) and the corresponding supporting rod (4) form a V-shaped groove, and an arc-shaped groove (71) is formed at one side, close to the supporting rod (4), of the upper end of the claw (7).
4. A quick centering device for cylindrical end surfaces in situ, according to claim 2, characterized in that the second end of the jaws (7) is provided inside with toothed projections.
5. The quick centering device for the on-site cylindrical end face according to claim 1, wherein a stepped hole is formed in the movable ring (5), a thrust bearing (10) is installed in the stepped hole, and the rotating shaft (1) is rotatably connected with the movable ring (5) through the thrust bearing (10).
6. The quick centering device for the cylindrical end face on site according to claim 1, wherein second supports (11) corresponding to the supporting rods (3) in number are uniformly arranged on the periphery of the movable ring (5), and the second ends of the connecting rods (6) are hinged with the corresponding second supports (11).
7. A quick centering device for a cylindrical end surface on site according to claim 1, characterized in that one end of the rotating shaft (1) far away from the movable ring (5) is connected with a back cap (9) through threads.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321068741.4U CN219724680U (en) | 2023-05-06 | 2023-05-06 | Quick centering device of on-spot cylinder terminal surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321068741.4U CN219724680U (en) | 2023-05-06 | 2023-05-06 | Quick centering device of on-spot cylinder terminal surface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219724680U true CN219724680U (en) | 2023-09-22 |
Family
ID=88064194
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321068741.4U Active CN219724680U (en) | 2023-05-06 | 2023-05-06 | Quick centering device of on-spot cylinder terminal surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219724680U (en) |
-
2023
- 2023-05-06 CN CN202321068741.4U patent/CN219724680U/en active Active
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