CN212843369U - Device for detecting coaxiality of eccentric sleeve of mandrel of bar rolling mill - Google Patents
Device for detecting coaxiality of eccentric sleeve of mandrel of bar rolling mill Download PDFInfo
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- CN212843369U CN212843369U CN202021377712.2U CN202021377712U CN212843369U CN 212843369 U CN212843369 U CN 212843369U CN 202021377712 U CN202021377712 U CN 202021377712U CN 212843369 U CN212843369 U CN 212843369U
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Abstract
The utility model provides a rod rolling mill dabber eccentric bushing axiality detection device, belongs to measuring instrument technical field for detect the axiality of dabber eccentric bushing. The technical scheme is as follows: two same V-shaped seats are placed on a base plane, two eccentric sleeves are placed on V-shaped openings of the two V-shaped seats respectively, two adjusting frames are placed on the base plane outside the two V-shaped seats respectively, two lead screw elevators are fixed on the adjusting frames, two sides of each adjusting frame are fixed with vertical sliding rods respectively, bearing seats are arranged above the two adjusting frames respectively, sliding holes are sleeved on the sliding rods on two sides of each adjusting frame respectively at two ends of each bearing seat, the upper ends of ejector rods of the lead screw elevators are supported on the bottom surfaces of the bearing seats, two ends of a rotating shaft penetrate through bearing inner holes in the two bearing seats respectively, and inner holes of the two eccentric sleeves to be detected are penetrated through the middle of the rotating shaft respectively. The utility model discloses simple structure, easy to operate, but the axiality deviation of two eccentric sleeves of direct measurement has improved detection efficiency.
Description
Technical Field
The utility model relates to an instrument that detects is carried out to the axiality of eccentric cover of rod rolling mill dabber belongs to measuring instrument technical field.
Background
One of the roughing mill core components of a bar mill is the mandrel. In the mandrel structure, a roll shaft of a support roll collar rotates in an oil film bearing, radial load of the roll shaft is born by the oil film bearing, the oil film bearing is pressed into a group of eccentric sleeves, the outer parts of two large eccentric sleeves are provided with a part of worm gear tooth shapes, when a worm meshed with the worm gear rotates, the eccentric sleeves rotate for a certain angle along with the worm gear in a certain direction, so that the center distance of the roll shaft is changed, and the roll gap adjusting function is realized. The lubrication of the oil film bearing of the roll shaft is pressure lubrication, the pressure of the lubrication system of which is 4 bar, which is about twice as high as the pressure of the lubrication system of the gear and the roller bearing, which is mainly convenient for the formation of an oil film. The mandrel needs to be disassembled for maintenance after being used for a period of time, before the mandrel is repaired and reinstalled, the coaxiality of inner holes of the upper oil film bearing and the lower oil film bearing of the panel and the coaxiality of outer rings of the upper eccentric sleeve and the lower eccentric sleeve need to be detected, the allowable deviation of the coaxiality is that the radius direction is smaller than 0.05mm, otherwise, the oil film bearing is easy to burn due to the fact that oil films with out-of-tolerance in the coaxiality are not easy to form, accidents are easy to occur, and economic.
As the mandrel is required to be transported to a machine maintenance factory to detect the coaxiality when any component of the oil film bearing, the eccentric sleeve, the connecting plate or the panel is disassembled, overhauled and replaced every time, the mandrel can be reloaded after being qualified. And the machine is transported to a machine maintenance factory for detection once, 3 days are needed under the condition that both a machine numerical control lathe and manpower are idle, the cost is 3 ten thousand yuan, the procedure is complicated, and the efficiency is lower.
Therefore, it is necessary to design a set of device for detecting the coaxiality of the mandrel of the bar mill, so that the coaxiality of the mandrel device can be detected in the local area during the machine repair, and the mandrel device needs to be processed and then transported out. Meanwhile, the machine repair factory repair parts can be detected, the reliability of equipment maintenance is improved, the purposes of reducing detection and maintenance cost are achieved, and the cost is saved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a rod rolling mill dabber eccentric sleeve axiality detection device is provided, this kind of detection device can measure eccentric sleeve both sides axial line axiality error, improves eccentric sleeve axiality detection efficiency, practices thrift the outward appearance expense, improves work efficiency.
The technical scheme for solving the technical problems is as follows:
a device for detecting the coaxiality of eccentric sleeves of a mandrel of a bar rolling mill comprises a base, V-shaped seats, a rotating shaft, adjusting frames, a screw rod lifter, bearing seats and sliding rods, wherein the base is a rectangular plate, two identical V-shaped seats are placed on a base plane, a V-shaped opening of each V-shaped seat is arranged along the length direction of the base, two eccentric sleeves to be detected are respectively placed on the V-shaped openings of the two V-shaped seats, the two adjusting frames are respectively placed on the base plane on the outer sides of the two V-shaped seats, the two screw rod lifters are fixed on the adjusting frames, two vertical sliding rods are respectively fixed on two sides of each adjusting frame, the bearing seats are respectively arranged above the two adjusting frames, sliding holes are respectively sleeved on the sliding rods on two sides of each adjusting frame at two ends of each bearing seat, the upper ends of ejector rods of the screw rod lifter are supported on the bottom surfaces of the bearing seats, two ends of the rotating shaft respectively penetrate through bearing inner, the middle part of the rotating shaft respectively penetrates through inner holes of two eccentric sleeves to be tested above the V-shaped seat.
According to the coaxiality detection device for the eccentric sleeves of the mandrel of the bar mill, the adjusting baffles are fixed on the bases on the two sides of the two V-shaped seats respectively, the adjusting baffles are provided with adjusting screw holes, the adjusting bolts are screwed in the adjusting screw holes, and the front ends of the adjusting bolts are propped against the side faces of the V-shaped seats.
Above-mentioned rod mill dabber eccentric bushing axiality detection device, adjusting frame comprises roof, two stands and bottom plate, and the bottom plate is fixed on the base, and screw rod lift fixed mounting is in the central authorities of roof, and screw rod lift's lead screw passes the screw hole of roof central authorities, the lower extreme of two slide bars respectively with the perpendicular fixed connection in upper end of two stands.
According to the coaxiality detection device for the eccentric sleeve of the mandrel of the bar mill, the two lead screw lifters are respectively provided with the opposite connecting holes, the connecting holes are respectively provided with the connecting shafts, the synchronous shafts are arranged between the connecting shafts of the two opposite lead screw lifters, and two ends of each synchronous shaft are respectively connected with the connecting shafts of the two lead screw lifters through the shaft couplings.
The utility model has the advantages that:
the rotating shaft of the utility model is supported by the bearing seats, and the lead screw lifter can adjust the heights of the bearing seats at two ends, so that the height of the rotating shaft is changed along the radial vertical direction of the eccentric sleeve; the sliding rod plays roles of lifting guiding and positioning for the bearing seat, and the bearing seat is prevented from deviating along the horizontal direction; the bearing blocks on the two sides can be lifted independently, and synchronous lifting can also be realized through the connection of a synchronous shaft; the eccentric sleeve device is placed on the V-shaped seat, and the adjusting bolt can adjust the V-shaped seat left and right to adjust the radial horizontal position of the eccentric sleeve.
The utility model discloses simple structure, safe and reliable, easy to operate, but direct measurement right side eccentric bushing and left side eccentric bushing axiality deviation improve eccentric bushing axiality detection efficiency, practice thrift the outward inspection expense, improve work efficiency.
Drawings
Fig. 1 is a schematic structural diagram of the present invention;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a sectional view B-B of fig. 1.
The figures are labeled as follows: the device comprises a base 1, a V-shaped seat 2, a rotating shaft 3, an adjusting frame 4, a screw rod lifter 5, a bearing seat 6, a sliding rod 7, an adjusting baffle 8, an adjusting bolt 9, a top plate 10, an upright post 11, a bottom plate 12, a connecting shaft 13, a synchronizing shaft 14, a coupler 15, an eccentric sleeve 16 and a dial indicator 17.
Detailed Description
The utility model discloses constitute by base 1, V type seat 2, pivot 3, adjusting frame 4, lead screw lift 5, bearing frame 6, slide bar 7, adjusting stop 8, adjusting bolt 9, connecting axle 13, synchronizing shaft 14, shaft coupling 15.
The figure shows that the base 1 is a rectangular plate, two identical V-shaped seats 2 are placed on the plane of the base 1, the V-shaped openings of the V-shaped seats 2 are along the length direction of the base 1, and two eccentric sleeves 16 to be measured are respectively placed on the V-shaped openings of the two V-shaped seats 2. The V-shaped seat 2 is used for supporting the eccentric sleeve 16 to be measured, and the V-shaped seat 2 with different heights can be selected according to the diameter of the eccentric sleeve 16. The two embodiments of the utility model respectively detect the eccentric sleeves 16 with the diameter of 685mm and the diameter of 510 mm.
Two eccentric sleeves 16 to be measured are respectively placed on the two V-shaped seats 2, and the V-shaped seats 2 need to be adjusted left and right so as to adjust the radial horizontal position of the eccentric sleeves 16. The adjusting structure is composed of adjusting baffles 8 and adjusting bolts 9, the adjusting baffles 8 are respectively fixed on the bases 1 on the two sides of the two V-shaped seats 2, adjusting screw holes are formed in the adjusting baffles 8, the adjusting bolts 9 are screwed in the adjusting screw holes, and the front ends of the adjusting bolts 9 are propped against the side faces of the V-shaped seats 2. The V-shaped seat 2 can horizontally move in the direction vertical to the length direction of the base 1 by rotating the adjusting bolt 9, so that the purpose of adjusting the radial horizontal position of the eccentric sleeve 16 is achieved.
When the eccentric sleeves 16 are measured, the rotating shaft 3 needs to penetrate through the two eccentric sleeves 16 along the length direction of the base 1, so that two ends of the rotating shaft 3 need to be supported, the height of the rotating shaft 3 needs to be adjusted, and the rotating shaft 3 can be located at the center position of the eccentric sleeves 16 by matching with the movement of the eccentric sleeves 16 in the radial horizontal position. The mechanism for adjusting the height of the rotating shaft 3 comprises an adjusting frame 4, a screw rod lifter 5, a bearing seat 6 and a sliding rod 7.
The figure shows that two adjusting frames 4 are respectively placed on the plane of the base 1 outside the two V-shaped seats 2. The adjusting frame 4 is composed of a top plate 10, two upright posts 11 and a bottom plate 12, the bottom plate 12 is fixed on the base 1, the screw rod lifter 5 is fixedly installed in the center of the top plate 10, and a screw rod of the screw rod lifter 5 penetrates through a screw rod hole in the center of the top plate 10. Bearing seats 6 are respectively arranged above the two adjusting frames 4, and the bottom surfaces of the bearing seats 6 are supported by the upper ends of mandrils of the screw rod lifters 5.
The figure shows that two ends of the rotating shaft 3 respectively penetrate through bearing inner holes in the bearing seats 6 above the two adjusting frames 4, the rotating shaft 3 can rotate through the bearings, the middle part of the rotating shaft 3 respectively penetrates through inner holes of the two eccentric sleeves 16 to be detected above the V-shaped seats 2, and the coaxiality is detected by the rotation of the rotating shaft 3 in the inner holes of the eccentric sleeves 16. The lead screw of the lead screw lifter 5 moves up and down, and can lift the bearing seat 6, so that the height of the rotating shaft 3 in the bearing seat 6 can be adjusted.
The upper ends of the upright posts 11 on both sides of each adjusting frame 4 are respectively and fixedly connected with the lower ends of the two sliding rods 7, the two ends of the bearing seat 6 are respectively provided with a sliding hole, the upper ends of the sliding rods 7 on both sides of the adjusting frame 4 penetrate through the sliding holes on both ends of the bearing seat 6, the sliding rods 7 are in sliding fit with the sliding holes, the bearing seat 6 can slide up and down along the sliding rods 7, and the sliding rods 7 play a role in guiding and positioning the bearing seat 6 to prevent the bearing seat 6 from deviating along the horizontal direction.
The left and right bearing blocks 6 at two opposite ends of the rotating shaft 3 can be lifted independently, and can also be lifted synchronously through the connection of the synchronizing shafts. The synchronous lifting structure is that two screw lifters 5 are respectively provided with opposite connecting holes, connecting shafts 13 are respectively arranged in the connecting holes, a synchronous shaft 14 is arranged between the connecting shafts 13 of the two opposite screw lifters 5, and two ends of the synchronous shaft 14 are respectively connected with the connecting shafts 13 of the two screw lifters 5 through a coupler 15.
The utility model discloses a use as follows:
the utility model discloses a detection method is: the axes of the rotating shaft 3 and an upper oil film bearing (or a lower oil film bearing) of the mandrel system are coincided by adjusting the relative positions of the two bearings. And then, fixing the position of the rotating shaft, rotating the rotating shaft, and detecting the eccentricity of the lower oil film bearing (or the upper oil film bearing) through an instrument fixed on the rotating shaft.
Firstly, an eccentric sleeve 16 assembly to be measured is placed on a V-shaped seat 2, a rotating shaft 3, an adjusting frame 4, a screw rod lifter 5, a bearing seat 6, a sliding rod 7, an adjusting baffle plate 8 and an adjusting bolt 9 of a measuring mechanism are assembled, and two dial indicators 17 and the eccentric sleeve 16 are fixed in position.
Then, the rotating shaft 3 is rotated, the numerical values of the two dial indicators 17 on one side of the inner hole of the eccentric sleeve 16 are read, and when the numerical value change trends of the two dial indicators 17 are inconsistent, the axial lead of the supporting points at the two ends of the rotating shaft 3 is not parallel to the axis of the inner hole of the eccentric sleeve 16, and coaxiality deviation exists.
And adjusting, namely adjusting a lead screw lifter 5 at the bottom of a bearing seat 6 and an adjusting bolt 9 of a V-shaped seat 2 to change the height of the rotating shaft 3 and the horizontal position of the rotating shaft 3 vertical to the length direction of the base 1, and repeatedly adjusting until the values of the two dial indicators 17 do not change around the circumferential direction (three-point centering), so that the axial line of the two fulcrums of the rotating shaft 3 is proved to be concentric with the axial line of the eccentric sleeve 16 on the side.
Then, the rotating shaft 3 is continued, and the numerical values of the dial indicators 17 on the two sides of the inner hole of the eccentric sleeve 16 on the other side are read out, so that the coaxiality deviation of the eccentric sleeves 16 on the two sides can be calculated.
The height of the rotating shaft 3 is adjusted through the screw rod lifters 5 at two ends, and the height of the rotating shaft is adjusted through the adjusting bolts at two sides of the eccentric sleeve V-shaped seat in the horizontal direction. Self-aligning roller bearings are selected as the fulcrum bearings on the two sides of the measuring shaft, and the self-aligning function can be achieved. One end of the fulcrum of the measuring rotating shaft 3 is a fixed end, and the other end of the fulcrum of the measuring rotating shaft 3 is a free end, so that the axial thermal expansion of the measuring rotating shaft 3 can be eliminated.
The utility model discloses an embodiment as follows:
the length of the base 1 is 2514mm, the width is 520mm, and the thickness is 35 mm;
the length of the V-shaped seat 2 is 200mm, the width is 400mm, and the height is 500 mm;
the diameter of the rotating shaft 3 is 114mm, and the length is 2584 mm;
the length of the adjusting frame 4 is 160mm, the width is 490mm, and the height is 260 mm;
the type of the screw rod lifter 5 is SWL 2.5-1A-2500F, and the length of a screw rod is 2036 mm;
the model of the bearing seat 6 and the bearing is 22220 CC/W33-C2;
the slide rod 7 has a diameter of 25mm and a length of 700mm
The diameter of the eccentric sleeve 16 is phi 685 mm;
the dial indicator 17 is a 0-5mm pendulum pointer dial indicator.
Claims (4)
1. The utility model provides a rod rolling mill dabber eccentric bushing axiality detection device which characterized in that: the device comprises a base (1), V-shaped seats (2), a rotating shaft (3), adjusting frames (4), lead screw elevators (5), bearing seats (6) and sliding rods (7), wherein the base (1) is a rectangular plate, two identical V-shaped seats (2) are placed on the plane of the base (1), the V-shaped openings of the V-shaped seats (2) are arranged along the length direction of the base (1), two eccentric sleeves (16) to be tested are respectively placed on the V-shaped openings of the two V-shaped seats (2), the two adjusting frames (4) are respectively placed on the plane of the base (1) at the outer sides of the two V-shaped seats (2), the two lead screw elevators (5) are fixed on the adjusting frames (4), the two sides of each adjusting frame (4) are respectively fixed with the vertical sliding rods (7), the bearing seats (6) are respectively arranged above the two adjusting frames (4), the two ends of each bearing seat (6) are respectively provided with a sliding hole to be sleeved on the sliding rods (7) at the two sides of each adjusting frame (4), the bottom surface of the bearing seat (6) is supported by the upper end of a mandril of the screw rod lifter (5), two ends of the rotating shaft (3) respectively penetrate through bearing inner holes in the bearing seat (6) above the two adjusting frames (4), and the middle part of the rotating shaft (3) respectively penetrates through inner holes of two eccentric sleeves (16) to be tested above the V-shaped seat (2).
2. The rod mill mandrel eccentric bushing coaxiality detection apparatus according to claim 1, wherein: adjusting baffles (8) are respectively fixed on the bases (1) on the two sides of the two V-shaped seats (2), adjusting screw holes are formed in the adjusting baffles (8), adjusting bolts (9) are screwed in the adjusting screw holes, and the front ends of the adjusting bolts (9) are propped against the side faces of the V-shaped seats (2).
3. The rod mill mandrel eccentric bushing coaxiality detection apparatus according to claim 1, wherein: the adjusting frame (4) is composed of a top plate (10), two upright columns (11) and a bottom plate (12), the bottom plate (12) is fixed on the base (1), the screw rod lifter (5) is fixedly installed in the center of the top plate (10), a screw rod of the screw rod lifter (5) penetrates through a screw rod hole in the center of the top plate (10), and the lower ends of the two sliding rods (7) are respectively and vertically and fixedly connected with the upper ends of the two upright columns (11).
4. The rod mill mandrel eccentric bushing coaxiality detection apparatus according to claim 1, wherein: the two screw rod lifters (5) are respectively provided with opposite connecting holes, connecting shafts (13) are respectively arranged in the connecting holes, a synchronizing shaft (14) is arranged between the connecting shafts (13) of the two opposite screw rod lifters (5), and two ends of the synchronizing shaft (14) are respectively connected with the connecting shafts (13) of the two screw rod lifters (5) through couplers (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021377712.2U CN212843369U (en) | 2020-07-14 | 2020-07-14 | Device for detecting coaxiality of eccentric sleeve of mandrel of bar rolling mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021377712.2U CN212843369U (en) | 2020-07-14 | 2020-07-14 | Device for detecting coaxiality of eccentric sleeve of mandrel of bar rolling mill |
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| Publication Number | Publication Date |
|---|---|
| CN212843369U true CN212843369U (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021377712.2U Active CN212843369U (en) | 2020-07-14 | 2020-07-14 | Device for detecting coaxiality of eccentric sleeve of mandrel of bar rolling mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117029644A (en) * | 2023-09-28 | 2023-11-10 | 江苏润孚机械轧辊制造有限公司 | Roller coaxiality detector |
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2020
- 2020-07-14 CN CN202021377712.2U patent/CN212843369U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117029644A (en) * | 2023-09-28 | 2023-11-10 | 江苏润孚机械轧辊制造有限公司 | Roller coaxiality detector |
| CN117029644B (en) * | 2023-09-28 | 2024-02-02 | 江苏润孚机械轧辊制造有限公司 | Roller coaxiality detector |
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