CN119733744A - Asynchronous rolling mill with multiple gear ratios - Google Patents
Asynchronous rolling mill with multiple gear ratios Download PDFInfo
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- CN119733744A CN119733744A CN202510256181.2A CN202510256181A CN119733744A CN 119733744 A CN119733744 A CN 119733744A CN 202510256181 A CN202510256181 A CN 202510256181A CN 119733744 A CN119733744 A CN 119733744A
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Abstract
The invention belongs to the technical field of small and medium-sized rolling equipment, and particularly relates to an asynchronous rolling mill with multiple gear ratios, which comprises a gear motor, a gear base and a two-roller rolling mill, wherein the gear base comprises a box body, two groups of gear shifting mechanisms are arranged on the box body, the first group of gear shifting mechanisms are used for realizing gear shifting between a first blind shaft double-linked gear and a second blind shaft double-linked gear, the second group of gear shifting mechanisms are used for realizing gear shifting between a third blind shaft double-linked gear and a fourth blind shaft double-linked gear, the gear shifting mechanisms are in sliding connection with a spring ball locking device, the problem that the rotating speed of the motor is changed when the load is changed, and the whole asynchronous rolling process cannot be completed under a constant different speed ratio is solved.
Description
Technical Field
The invention belongs to the technical field of small and medium-sized rolling equipment, and particularly relates to an asynchronous rolling mill with multiple gear ratios.
Background
The asynchronous rolling mill adopts an asynchronous rolling mode, and the rolling method achieves the aim of reducing the rolling force by enabling the surface linear speeds of the upper working roller and the lower working roller to be different. Currently, in the process of rolling composite boards, asynchronous rolling can better improve the degree of warping of the composite board by "rubbing rolling". Therefore, the accuracy of the speed ratio of the upper roller and the lower roller in the asynchronous rolling process directly determines the accuracy and the shape quality of the product.
At present, a small and medium-sized asynchronous rolling mill with a roller diameter of 150mm is used for realizing asynchronous rolling, a gear base is not usually adopted, two three-phase motors are directly connected with two rollers through a coupler, and the rotating speeds of the two three-phase motors are controlled by an operation console controller to realize a target speed ratio, so that the problems are that:
1. From the mechanical characteristic of the motor, it can be seen that the rotational speed changes when the load changes. When the rolling mill works, the problem that the friction force between the upper roller and the lower roller is inconsistent with the upper surface and the lower surface of the plate is caused, so that the load of the upper roller and the lower roller is different, the rotating speed is changed, and the whole asynchronous rolling process can not be completed under the constant different speed ratio.
2. The small and medium-sized asynchronous rolling mill connects the gear motor with the upper and lower rollers of the rolling mill through a cross shaft universal coupling. The output end of the speed reducing motor and the input end of the roller have the problem of radial dimension deviation, so that the included angle between the axis of the coupler and the horizontal line is larger than 15 degrees, and further, the rolling stability is affected by the speed impact generated in the rolling process.
Disclosure of Invention
The invention designs an asynchronous rolling mill with multiple gear ratios aiming at the problem that a constant different speed ratio cannot be maintained in a small-sized and medium-sized asynchronous rolling mill with a roller diameter of 150 mm.
The invention adopts the following technical scheme to achieve the aim:
The utility model provides an asynchronous rolling mill of multiple gear ratio, includes gear motor, gear base and second roller mill, gear base includes the box, be equipped with drive mechanism and gearshift in the box, drive mechanism includes logical axle and blind axle, logical axle and blind axle all rotate and install on the box, the input of logical axle passes through flange shaft coupling and gear motor's output shaft connection, the output of logical axle and blind axle respectively through the universal joint of cross axle and two roll connection of second roller mill first logical axle gear, second logical axle gear, third logical axle gear and fourth axle gear are connected with in proper order on the logical axle first blind axle duplex gear, first gear hub, second blind axle duplex gear, third blind axle duplex gear, second gear hub and fourth blind axle duplex gear are equipped with in proper order on the blind axle, first blind axle duplex gear hub and second blind axle duplex gear are all connected with the blind axle through the mode of key connection with the blind axle, first blind axle duplex gear, second blind axle duplex gear, third blind axle duplex gear set is connected with the second blind axle duplex gear set and is in the second blind axle duplex gear set, the gear set is realized in the gear set is connected with the flange, the gear set is in the second blind axle duplex gear set is connected with the second blind axle duplex gear set, and is connected with the second blind axle duplex gear set is in the second axle duplex gear set is connected with the flange, and is rotated between the second blind axle duplex gear set, the gear shifting device is characterized in that the upper end of the gear shifting rod penetrates through the flange plate to be connected with a gear shifting ball handle, the lower end of the gear shifting rod penetrates through the flange plate to be provided with a gear shifting gear, the gear shifting gear is connected with a gear shifting rack in a meshed mode, two ends of the gear shifting rack are fixedly connected with gear shifting support rods, a gear shifting fork is fixedly installed on one of the gear shifting support rods, a combining sleeve is rotatably clamped on the gear shifting fork, the combining sleeve is connected with a corresponding first gear hub or second gear hub in a meshed mode, the gear shifting support rods are connected with a spring ball locking device in a sliding mode, and the spring ball locking device is installed on the side wall of the box body.
Further, the box includes the box, well box and lower box go up all be provided with the locating pin between box and the well box and between well box and the lower box, go up box and well box and lower box all pass through the bolt fastening.
Still further, set up the observation window on the well box to observe the behavior of combining the cover.
Still further, the blind axle sets up in the junction of last box and well box, the axis of blind axle and the connecting wire between last box and the well box are on same horizontal plane, the logical axle sets up in the junction of well box and lower box, the axis of logical axle and the connecting wire between well box and the lower box are on same horizontal plane.
Furthermore, the upper surface of the upper box body is symmetrically provided with two assembly hanging rings.
Further, a filter is arranged on the upper surface of the upper box body.
Still further, spring ball locking device includes fixed connection at the mount pad of box lateral wall set up the slide in the mount pad, shift the bracing piece slip and set up in the slide the upper surface fixedly connected with top confined sleeve pipe of mount pad be provided with the spring in the sleeve pipe the steel ball is installed to the lower extreme of spring shift the bracing piece and set up three recess that corresponds with the steel ball.
Furthermore, the included angle between the axis of the cross universal coupling and the horizontal line is 0-5 degrees.
Still further, the bracing piece that shifts with shift rack threaded connection shifts, the bracing piece that shifts is non-cylinder structure.
Furthermore, the transmission ratio i of the gear base is 0.8-1.25.
Compared with the prior art, the invention has the following advantages:
The application adopts the gear base to replace the control of the rotation speed ratio of the asynchronous rolling mill by controlling the rotation speeds of two three-phase motors, the gear base can realize accurate and stable transmission ratio by matching mechanical gears, the problem that the rotation speed of the motors is changed when the load is changed and the whole asynchronous rolling process can not be completed under the constant different speed ratio is solved, and meanwhile, the application can realize the multi-gear adjustment of the rotation speed ratio and can adjust the different speed ratio according to the requirement.
Compared with the prior cross universal coupler which is directly connected with a motor and a roller, the included angle between the axis of the coupler and the horizontal line is 0-5 degrees, and the included angle between the axis of the coupler and the horizontal line is larger than 15 degrees, so that the roller can not generate larger speed fluctuation after improvement, and the rolling process is more stable.
The invention is provided with the spring ball locking device which is arranged at the tail end of the gear shifting support rod, the tail end of the gear shifting support rod is provided with corresponding grooves aiming at different gears, and the automatic locking after gear shifting is realized through the matching of the grooves and the spring ball locking device.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of a gear base according to the present invention;
FIG. 3 is a schematic cross-sectional view of the present invention;
FIG. 4 is a schematic side cross-sectional view of a gear base of the present invention;
FIG. 5 is a schematic view of the installation of the through shaft of the present invention;
FIG. 6 is a schematic view of the installation of the blind shaft of the present invention;
FIG. 7 is a schematic view of a gear shifting mechanism according to the present invention;
FIG. 8 is a partial cross-sectional view of the shift mechanism of the present invention;
FIG. 9 is a cross-sectional view of the gear base of the present invention in neutral;
FIG. 10 is a cross-sectional view of the gear base of the present invention in gear;
FIG. 11 is an enlarged view of a portion of circle A of FIG. 3 in accordance with the present invention;
FIG. 12 is a schematic view of the installation of a shift rack and shift support bar of the present invention;
In the figure, a gear motor 1, a flange coupling 2, a gear base 3, a cross universal coupling 4, a two-roll mill 5, a through shaft 301, a first through shaft gear 302, a second through shaft gear 303, a third through shaft gear 304, a fourth through shaft gear 305, a blind shaft 306, a first blind shaft double gear 307, a first gear hub 308, a second blind shaft double gear 309, a third blind shaft double gear 310, a second gear hub 311, a fourth blind shaft double gear 312, a flange 313, a shift lever 314, a shift ball handle 315, a shift gear 316, a shift rack 317, a shift support bar 318, a shift fork 319, a coupling sleeve 320, a spring ball locking device 321, a box 322, a mounting seat 3211, a slide 3212, a sleeve 3213, a spring 3214, a steel ball 3215, a groove 3216, an upper box 3221, a middle box 3222, a lower box 3223, a viewing window 3224, a lifting ring 3225, and a filter 3226.
Detailed Description
In order to further illustrate the technical scheme of the invention, the invention is further illustrated by the attached drawings.
Example 1
As shown in fig. 1 to 12, an asynchronous rolling mill with multiple gear ratios comprises a speed reducing motor 1, a gear base 3 and a second rolling mill 5, wherein the gear base 3 comprises a box 322, a transmission mechanism and a gear shifting mechanism are arranged in the box 322, the transmission mechanism comprises a through shaft 301 and a blind shaft 306, the through shaft 301 and the blind shaft 306 are respectively rotatably arranged on the box 322, the input end of the through shaft 301 is connected with the output shaft of the speed reducing motor 1 through a flange coupler 2, the output ends of the through shaft 301 and the blind shaft 306 are respectively connected with two rollers of the second rolling mill 5 through a cross universal joint 4, the included angle between the axis of the cross universal joint 4 and a horizontal line is 0.14 degrees, a first through shaft gear 302, a second through shaft gear 303, a third through shaft gear 304 and a fourth through shaft gear 305 are sequentially connected with one in a key manner, a first blind shaft 307, a first hub gear 308, a second through shaft 309, a third hub gear 309, a second hub gear 310, a second blind gear 307 and a second blind gear group are sequentially arranged on the blind shaft 306, the first and the blind shaft 306 are respectively rotatably connected with the first through the first and the second hub gear 307, the blind shaft 307 and the second blind shaft 306, the blind shaft group is respectively connected with the second blind shaft 310 through the second hub gear 307, the blind gear group is meshed with the second gear 307, the blind gear group is connected with the second blind gear 306, the blind gear group is meshed with the second gear group, and the blind gear 306, and the blind gear group is meshed with the blind gear 306, the first gear shifting mechanism is used for realizing gear shifting between the first blind shaft double gear 307 and the second blind shaft double gear 309, the second gear shifting mechanism is used for realizing gear shifting between the third blind shaft double gear 310 and the fourth blind shaft double gear 312, the gear shifting mechanism comprises a flange 313 fixed on the upper surface of a box body, a gear shifting lever 314 is rotatably connected inside the flange 313, the upper end of the gear shifting lever 314 penetrates through the flange 313 to be connected with a gear shifting ball handle 315, the lower end of the gear shifting lever 314 penetrates through the flange 313 to be provided with a gear shifting gear 316, the gear shifting gear 316 is in meshed connection with a gear shifting rack 317, both ends of the gear shifting rack 317 are in threaded connection with gear shifting support rods 318, one gear shifting support rod 318 is fixedly provided with a gear shifting fork 319, a combining sleeve 320 is rotatably clamped on the gear shifting fork 319, the combining sleeve 320 is in meshed connection with a corresponding first gear hub 308 or second gear hub 311, the gear shifting support rod 318 is in sliding connection with a spring ball locking device 321, the spring ball locking device 321 is installed on the side wall of the box body 322, and the transmission ratio of the base is 0.25.1-25.
The box 322 includes the upper box 3221, well box 3222 and lower box 3223 between upper box 3221 and the well box 3222 and between well box 3222 and the lower box 3223 all be provided with the locating pin, the upper box 3221 and well box 3222 and lower box 3223 all pass through the bolt fastening set up observation window 3224 on the well box 3222 to the behavior of combining the cover 320 is convenient for observe, blind shaft 306 sets up in the junction of upper box 3221 and well box 3222, the axis of blind shaft 306 and the junction between upper box 3221 and well box 3222 are on same horizontal plane, the connecting wire between axis of through shaft 301 and well box 3222 and lower box 3223 is on same horizontal plane, the upper surface symmetry of upper box 3221 is provided with two and assembles rings 3225, upper surface filter 3221 is equipped with.
The spring ball locking device 321 comprises a mounting seat 3211 fixedly connected to the side wall of the box 322, a slide way 3212 is arranged in the mounting seat 3211, the gear shifting support rod 318 is arranged in the slide way 3212 in a sliding mode, a sleeve 3213 with a closed top is fixedly connected to the upper surface of the mounting seat 3211, a spring 3214 is arranged in the sleeve 3213, a steel ball 3215 is arranged at the lower end of the spring 3214, and three grooves 3216 corresponding to the steel ball 3215 are formed in the gear shifting support rod 318.
Under different gear positions of the gear base 3, the following situations exist in the position of the combining sleeve 320 of the gear base 3 and the self-locking position of the steel ball 3215 and the groove 3216 of the gear shifting support rod 318:
When in the neutral state, the coupling sleeve 320 is engaged with only the first gear hub 308 and the second gear hub 311, and the blind shaft 306 does not transmit power. In first gear, the first gear hub 308 is in driving connection with the first blind shaft duplex gear 307 through the corresponding coupling sleeve 320, and transmits power to the blind shaft 306. In the second gear, the first gear hub 308 is in transmission connection with the second blind shaft duplex gear 309 through the corresponding combination sleeve 320, and power is transmitted to the blind shaft 306. In three gears, the second gear hub 311 is in transmission connection with the third blind shaft duplex gear 310 through the corresponding coupling sleeve 320, and transmits power to the blind shaft 306. In fourth gear, the second gear hub 311 is in transmission connection with the fourth blind shaft duplex gear 312 through the corresponding coupling sleeve 320, and transmits power to the blind shaft 306.
In this embodiment, the center distance between the through axis 301 and the blind axis 306 is 252mm, and the multi-speed ratios that can be achieved are i=1.25, i=1.1, i=1, i=0.8, respectively. On the premise of meeting the conditions that the center distance and the minimum tooth number of the transmission gear are not undercut, according toAnd (3) calculating to obtain:
Ratio of main gear to first through-shaft gear 302 on first blind shaft duplex gear 307 The modulus of the gear is 8.
Ratio between the main gear on the second blind shaft double gear 309 and the second through shaft gear 303The modulus of the gear is 8.
Ratio between the main gear and the third three-way shaft gear 304 on the third blind shaft double gear 310The gear module is taken as 7.
Ratio between the main gear on the fourth blind shaft duplex gear 312 and the fourth shaft gear 305The modulus of the gear is 8. Where i denotes a transmission ratio, Z 1 denotes a driving wheel tooth number, and Z 2 denotes a driven wheel tooth number.
Center distance of two meshed gearsThe center distance of each pair of gears is 252mm through calculation and verification.
In addition, the number of teeth and the modulus of the first gear hub 308 are the same as the number of teeth and the modulus of the pinion gears on the first blind shaft double gear 307 and the second blind shaft double gear 309, and the number of teeth and the modulus of the second gear hub 311 are the same as the number of teeth and the modulus of the pinion gears on the third blind shaft double gear 310 and the fourth blind shaft double gear 312. Specifically, on the premise of satisfying the tooth surface contact strength and the tooth surface bending strength, the number of teeth of the pinion gears on the first gear hub 308 and the first and second blind shaft duplex gears 307 and 309 is 35, the modulus is 8, the number of teeth of the ring gear of the coupling sleeve 320 corresponding to the first gear hub 308 is 35, and the modulus is 8. The number of teeth of the pinion gears on the second gear hub 311 and the third and fourth blind shaft duplex gears 310 and 312 is 40, the modulus is 7, the number of teeth of the ring gear of the coupling sleeve 320 corresponding to the second gear hub 311 is 40, and the modulus is 7.
The gear base 3 is connected with the two-roller mill 5 by adopting a cross universal coupling 4, and if the included angle between the axis of the cross universal coupling 4 and the horizontal plane is larger than 15 degrees, speed fluctuation can be caused, so that the rolling effect is affected. In the embodiment, the center distance between the through shaft 301 and the blind shaft 306 is 252mm, the center distance between the upper roller and the lower roller of the two-roller mill 5 connected with the cross universal joint 4 is 250mm, the length of the cross universal joint 4 is 400mm, and the horizontal height difference of the cross universal joint 4 is calculatedIs obtained by geometric relationshipFinally, the inclination angle of the cross universal coupling 4 is obtainedLess than the maximum boundary condition that produces speed fluctuations.
Example 2
In this embodiment, the included angle between the axis of the universal joint pin 4 and the horizontal line is 0 °.
Example 3
In this embodiment, the included angle between the axis of the universal joint pin 4 and the horizontal line is 5 °.
While the principal features and advantages of the present invention have been shown and described, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing exemplary embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (10)
1. The asynchronous rolling mill with the multi-gear speed ratio is characterized by comprising a gear motor (1), a gear base (3) and a two-roller rolling mill (5), wherein the gear base (3) comprises a box body (322), a transmission mechanism and a gear shifting mechanism are arranged in the box body (322), the transmission mechanism comprises a through shaft (301) and a blind shaft (306), the through shaft (301) and the blind shaft (306) are both rotatably arranged on the box body (322), the input end of the through shaft (301) is connected with the output shaft of the gear motor (1) through a flange coupler (2), the output ends of the through shaft (301) and the blind shaft (306) are respectively connected with two rollers of the two-roller rolling mill (5) through a cross universal coupler (4), and a first through shaft gear (302) are sequentially connected on the through shaft (301) in a key manner, The novel gear comprises a second through shaft gear (303), a third through shaft gear (304) and a fourth through shaft gear (305), wherein a first blind shaft duplex gear (307), a first gear hub (308), a second blind shaft duplex gear (309), a third blind shaft duplex gear (310), a second gear hub (311) and a fourth blind shaft duplex gear (312) are sequentially arranged on a blind shaft (306), the first gear hub (308) and the second gear hub (311) are connected with the blind shaft (306) in a key connection mode, and the first blind shaft duplex gear (307), the second blind shaft duplex gear (309), The third blind shaft double gear (310) and the fourth blind shaft double gear (312) are rotatably connected with the blind shaft (306) through bearings, and the first through shaft gear (302), the second through shaft gear (303), the third through shaft gear (304) and the fourth through shaft gear (305) are respectively connected with the first blind shaft double gear (307), the second blind shaft double gear (309), The gear shifting device comprises a box body, a first blind shaft double-linked gear (310) and a fourth blind shaft double-linked gear (312), a main gear meshed connection, two groups of gear shifting mechanisms are further arranged on the box body, the first group of gear shifting mechanisms are used for realizing gear shifting between the first blind shaft double-linked gear (307) and the second blind shaft double-linked gear (309), the second group of gear shifting mechanisms are used for realizing gear shifting between the third blind shaft double-linked gear (310) and the fourth blind shaft double-linked gear (312), the gear shifting mechanisms comprise a flange plate (313) fixed on the upper surface of the box body, a gear shifting rod (314) is rotatably connected inside the flange plate (313), the upper end of the gear shifting rod (314) penetrates through the flange plate (313) to be connected with a gear shifting ball handle (315), the lower end of the gear shifting rod (314) penetrates through the flange plate (313) to be connected with a gear shifting rack (317) in a meshed manner, two ends of the gear shifting rack (317) are fixedly connected with a supporting rod (318), one of the supporting rods (319) is fixedly connected with a hub (318) is fixedly connected with a gear shifting rod (319), a gear shifting ball (320) is rotatably connected with a corresponding gear shifting sleeve (320) in a meshed connection mode, the spring ball locking device (321) is arranged on the side wall of the box body (322).
2. The asynchronous rolling mill with multiple gear ratios according to claim 1, wherein the box body (322) comprises an upper box body (3221), a middle box body (3222) and a lower box body (3223), positioning pins are arranged between the upper box body (3221) and the middle box body (3222) and between the middle box body (3222) and the lower box body (3223), and the upper box body (3221) and the middle box body (3222) and the lower box body (3223) are all fixed through bolts.
3. The multi-speed asynchronous rolling mill according to claim 2, wherein an observation window (3224) is formed in the middle box body (3222) so as to observe the working condition of the combining sleeve (320).
4. The multi-speed asynchronous rolling mill according to claim 2, wherein the blind shaft (306) is arranged at the joint of the upper box body (3221) and the middle box body (3222), the central axis of the blind shaft (306) is on the same horizontal plane with the connecting line between the upper box body (3221) and the middle box body (3222), the through shaft (301) is arranged at the joint of the middle box body (3222) and the lower box body (3223), and the central axis of the through shaft (301) is on the same horizontal plane with the connecting line between the middle box body (3222) and the lower box body (3223).
5. The multi-speed asynchronous rolling mill according to claim 2, wherein two assembling hanging rings (3225) are symmetrically arranged on the upper surface of the upper box body (3221).
6. The asynchronous rolling mill with multiple speed ratios according to claim 4, wherein a filter (3226) is arranged on the upper surface of the upper box body (3221).
7. The multi-gear-ratio asynchronous rolling mill of claim 1, wherein the spring ball locking device (321) comprises an installation seat (3211) fixedly connected to the side wall of the box body (322), a slide way (3212) is formed in the installation seat (3211), the gear shifting support rod (318) is arranged in the slide way (3212) in a sliding mode, a sleeve (3213) with a closed top is fixedly connected to the upper surface of the installation seat (3211), a spring (3214) is arranged in the sleeve (3213), a steel ball (3215) is arranged at the lower end of the spring (3214), and three grooves (3216) corresponding to the steel ball (3215) are formed in the gear shifting support rod (318).
8. The multi-gear-ratio asynchronous rolling mill according to claim 1, wherein an included angle between the axis of the cross universal coupling (4) and a horizontal line is 0-5 degrees.
9. The asynchronous rolling mill with multiple speed ratios according to claim 1, characterized in that the gear shifting support rod (318) is in threaded connection with a gear shifting rack (317), and the gear shifting support rod (318) is of a non-cylindrical structure.
10. The multi-gear-ratio asynchronous rolling mill according to claim 1, wherein the gear base (3) has a transmission ratio i of 0.8-1.25.
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| CN202510256181.2A CN119733744B (en) | 2025-03-05 | 2025-03-05 | Asynchronous rolling mill with multiple gear ratios |
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| CN202510256181.2A CN119733744B (en) | 2025-03-05 | 2025-03-05 | Asynchronous rolling mill with multiple gear ratios |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN120626688A (en) * | 2025-08-18 | 2025-09-12 | 太原理工大学 | A shift gear box and asynchronous rolling mill |
| CN120961633A (en) * | 2025-10-22 | 2025-11-18 | 太原理工大学 | Online multi-gear speed ratio switching asynchronous rolling mill |
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| CN120626688A (en) * | 2025-08-18 | 2025-09-12 | 太原理工大学 | A shift gear box and asynchronous rolling mill |
| CN120626688B (en) * | 2025-08-18 | 2025-10-03 | 太原理工大学 | Gear shifting gearbox and asynchronous rolling mill |
| CN120961633A (en) * | 2025-10-22 | 2025-11-18 | 太原理工大学 | Online multi-gear speed ratio switching asynchronous rolling mill |
| CN120961633B (en) * | 2025-10-22 | 2025-12-30 | 太原理工大学 | Online multi-gear speed ratio switching asynchronous rolling mill |
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