CN114635956A - Vertical speed reducer output structure for vertical rolling mill and use method thereof - Google Patents

Vertical speed reducer output structure for vertical rolling mill and use method thereof Download PDF

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Publication number
CN114635956A
CN114635956A CN202210290032.4A CN202210290032A CN114635956A CN 114635956 A CN114635956 A CN 114635956A CN 202210290032 A CN202210290032 A CN 202210290032A CN 114635956 A CN114635956 A CN 114635956A
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China
Prior art keywords
output shaft
piston rod
vertical
gear
rolling mill
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CN202210290032.4A
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Chinese (zh)
Inventor
张吉庆
孟祥瑞
孙丽荣
栾兆华
刘明
刘海川
万佳峰
王峰
戴臻臻
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SD Steel Rizhao Co Ltd
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SD Steel Rizhao Co Ltd
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Priority to CN202210290032.4A priority Critical patent/CN114635956A/en
Publication of CN114635956A publication Critical patent/CN114635956A/en
Pending legal-status Critical Current

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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
    • F16D3/16—Universal joints in which flexibility is produced by means of pivots or sliding or rolling connecting parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/04—Features relating to lubrication or cooling or heating
    • F16H57/042—Guidance of lubricant
    • F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
    • F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16H—GEARING
    • F16H57/00—General details of gearing
    • F16H57/02—Gearboxes; Mounting gearing therein
    • F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
    • F16H2057/0235—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly specially adapted to allow easy accessibility and repair

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Transmission Devices (AREA)

Abstract

The invention provides an output structure of a vertical speed reducer for a vertical rolling mill and a using method thereof, belonging to the technical field of rolling mill speed reducers. The adopted scheme is as follows: the hydraulic cylinder is arranged above the output shaft, the upper end of the output shaft is rotationally connected with the lower end of a piston rod in the hydraulic cylinder, and the universal joint shaft is arranged below the output shaft; the lower end face of the output shaft is provided with a first end face tooth, the upper end face of the universal joint shaft is provided with a second end face tooth, and the first end face tooth is meshed with the second end face tooth; the output shaft is also provided with a transmission gear, and the piston rod can change the connection position between the output shaft and the transmission gear by stretching. The device bears the weight of the output shaft and the universal spindle through the piston rod of the hydraulic cylinder, ensures the coaxiality of the output shaft and the universal spindle, is convenient to disassemble and assemble, and achieves the purposes of quickly replacing and checking the output shaft; the output shaft is directly connected with the universal connecting shaft, so that the hidden danger of equipment is eliminated, and the transmission stability is improved.

Description

Vertical speed reducer output structure for vertical rolling mill and use method thereof
Technical Field
The invention relates to the technical field of rolling mill speed reducers, in particular to a vertical speed reducer output structure for a vertical rolling mill and a using method thereof.
Background
The output structure of a vertical longitudinal speed reducer in the prior art is shown in fig. 1, an output shaft is in a gear shaft type, the output shaft is connected with a main transmission connecting shaft through a transition gear sleeve, the transition gear sleeve is in clearance fit with the output shaft, and the whole main transmission connecting shaft is completely fixed at the lower end of the transition gear sleeve through 6M 24 bolts through a flange plate.
Because the vertical roll is required to rotate positively and negatively to transmit and reduce the width of the strip steel in the rolling process of the vertical roll mill, the requirements on the equipment precision and the stability of a transmission system are higher, but the prior art at present has the following defects:
1. under the condition that the output shaft rotates forwards and backwards, the bolt is firstly subjected to shear stress or impact at the moment of starting the equipment, and when the bolt is in the running state for a long time, the bolt can be greatly loosened and even cut off, so that the main transmission connecting shaft falls off, and major equipment accidents occur;
2. the output shaft is connected with the transmission gear key, torque is transmitted by means of a flat key and interference, if the spline teeth meshed with the transition gear sleeve at the front end of the output shaft are abraded, the output shaft is difficult to replace and disassemble, and the assembly difficulty is high;
3. the flange plate bearing the weight of the main transmission connecting shaft is positioned between the main transmission connecting shaft and the transition gear sleeve, and the state of the joint of the output shaft and the main transmission connecting shaft cannot be detected in a point mode during daily detection.
Disclosure of Invention
The invention provides a vertical speed reducer output structure for a vertical rolling mill and a using method thereof, aiming at overcoming the defects that a main transmission connecting shaft falls off due to poor transmission stability, the main transmission connecting shaft cannot be rapidly replaced and the joint of an output shaft and the main transmission connecting shaft cannot be detected.
The technical scheme adopted by the invention for solving the technical problems is as follows: a vertical speed reducer output structure for a vertical rolling mill comprises an output shaft, wherein a hydraulic cylinder is arranged above the output shaft, the upper end of the output shaft is rotatably connected with the lower end of a piston rod in the hydraulic cylinder, and a universal joint shaft is arranged below the output shaft; the lower end face of the output shaft is provided with a first end face tooth, the upper end face of the universal joint shaft is provided with a second end face tooth, and the first end face tooth is meshed with the second end face tooth; the output shaft is further provided with a transmission gear, the transmission gear is provided with a spline groove, the peripheral surface of the output shaft is provided with a spline matched with the spline groove, the length of the spline is larger than that of the spline groove, and the telescopic piston rod can change the connecting position between the output shaft and the transmission gear. The upper end of the output shaft is connected with a piston rod of the hydraulic cylinder, the output shaft and the piston rod can rotate relatively, the lower end of the output shaft is directly connected with the universal joint shaft through a first end face tooth and a second end face tooth, and the first end face tooth and the second end face tooth are meshed with each other to transmit power; the transmission gear is connected with the output shaft in a sliding manner, so that the output shaft can move axially under the action of the hydraulic cylinder, a piston rod of the hydraulic cylinder is connected with the output shaft, the weight of the output shaft and the weight of the universal connecting shaft can be borne, the coaxiality of the output shaft and the universal connecting shaft can be guaranteed, the assembly and disassembly are convenient, and the purposes of quickly replacing and checking the output shaft are achieved; the mode that the output shaft of the speed reducer is connected with the universal spindle through the gear sleeve in the prior art is broken through, and the end face teeth I and the end face teeth II which are meshed with each other are respectively arranged on the end faces of the output shaft and the universal spindle, so that the output shaft is directly connected with the universal spindle, the hidden danger of equipment is eliminated, and the transmission stability is improved.
Furthermore, the transmission gear is installed in the gear box, a box cover is arranged above the gear box, a through hole is formed in the top of the box cover, the hydraulic cylinder is fixed above the box cover, the piston rod penetrates through the through hole to extend into the box cover and is connected with the output shaft, and the output shaft can slide in the gear box along the length direction. The adjusting hydraulic cylinder can drive the output shaft to slide in the box cover and the gear box through the piston rod, so that the output shaft can be conveniently detected, assembled and disassembled.
Furthermore, a certain number of bolts are further arranged on the output shaft, the bolts are evenly distributed on the lower end face of the output shaft, threaded holes matched with the bolts are formed in the universal connecting shaft, and the bolts penetrate through the threaded holes to be fixedly connected with the universal connecting shaft and the output shaft. The bolts with a certain number can play a role in assisting in fixing the output shaft and the universal spindle, the stability of connection of the output shaft and the universal spindle is guaranteed, and the coaxiality of the output shaft and the universal spindle is further guaranteed.
Furthermore, the output shaft is arranged in a hollow mode, the piston rod is connected with the output shaft through a connecting piece, the diameter of the connecting piece is matched with the inner diameter of the output shaft, and the piston rod can rotate relative to the connecting piece; the upper end of the connecting piece is provided with a flange plate, the connecting piece is inserted into one end of the output shaft, and the flange plate is contacted with and fixedly connected with the end surface of the output shaft. The connecting piece is in plug-in fit with the output shaft, so that the position accuracy of the output shaft after detection and replacement is finished can be ensured, and the coaxiality of the output shaft matched with the transmission gear when the output shaft is installed again is prevented from being influenced.
Furthermore, the connecting piece is provided with a mounting hole, the lower end of the piston rod is positioned in the mounting hole, and the piston rod is connected with the connecting piece through a bearing. The piston rod and the connecting piece are installed in a matched mode through the bearing, and the impact on the piston rod in the moment when the output shaft is matched with the transmission gear is eliminated.
Further, drive gear includes fixed cover, is provided with the teeth of a cogwheel of a certain amount on the periphery of fixed cover, is provided with the spline groove on the inner wall of fixed cover, and the spline groove sets up in the upper end of fixed cover, and the length of spline groove is no longer than the third of fixed cover length. Through setting up the output shaft and passing through splined connection with drive gear, changed and adopted fixed output shaft of key-type connection and gear among the prior art to through the form of key and interference magnitude transmission moment of torsion, make the transmission clearance be located between spline and the spline groove, effectively promoted the driven stability of device.
Furthermore, the upper end and the lower end of the fixed sleeve are connected with a bearing of the gear box. The fixing sleeve is arranged, so that the output shaft can smoothly slide in the fixing sleeve along the axial direction of the output shaft, and the output shaft can move in different working states.
The oil outlet I is positioned below the through hole, and the oil outlet I is close to the piston rod; the oil outlet II is positioned above the gear box and is close to the upper end of the transmission gear; the oil outlet III is positioned in the gear box, and the oil outlet III is close to the lower end of the transmission gear. The thin oil duct can better lubricate the meshing spline part of the transmission gear and the output shaft, the bearing at the lower end of the piston rod of the hydraulic cylinder and other relative rotating parts.
A use method of a vertical speed reducer output structure for a vertical rolling mill comprises the following steps:
s1: the hydraulic cylinder is arranged above the box cover, a piston rod of the hydraulic cylinder extends into the box cover, the lower end of the piston rod is connected with the connecting piece through a bearing, and the end face of the output shaft is fixedly connected with the flange plate through a bolt;
s2: mounting one end of the transmission gear, which is provided with a spline groove, close to the hydraulic cylinder, matching the upper end and the lower end of the fixed sleeve with a bearing of the gear box, matching a spline on the periphery of the output shaft with the spline groove on the inner wall of the fixed sleeve, and mounting the box cover above the gear box;
s3: connecting the output shaft with the universal spindle, meshing the first end face teeth with the second end face teeth, and fixing the output shaft and the universal spindle by using bolts in an auxiliary manner; and adjusting the hydraulic cylinder to enable the piston rod to drive the output shaft to slide along the axial direction of the output shaft in the fixed sleeve until the connecting piece at the upper end of the output shaft is close to the top of the box cover, so that the bearing in the mounting hole can be adapted to the position of the first oil outlet. The mode of connecting output shaft and final drive spiale through the tooth cover has been broken, bears the weight of output shaft and universal spiale through the piston rod of pneumatic cylinder, makes things convenient for the dismouting, has reached the purpose of quick replacement and inspection output shaft.
According to the technical scheme, the invention has the following advantages:
the vertical speed reducer output structure for the vertical rolling mill and the use method thereof are provided by the scheme, the device is high in applicability and high in stability, the transmission gear and the output shaft are arranged to be matched through the spline, so that torque can be transmitted between the transmission gear and the output shaft, the output shaft can axially move under the action of the hydraulic cylinder, the weight of the output shaft and the universal connecting shaft is borne by the piston rod of the hydraulic cylinder, the coaxiality of the output shaft and the universal connecting shaft is ensured, the disassembly and assembly are convenient, and the purposes of quickly replacing and checking the output shaft are achieved; the mode of connecting the output shaft and the main transmission connecting shaft through the gear sleeve is broken, and the first end face gear and the second end face gear which are meshed with each other are arranged on the end faces of the output shaft and the universal connecting shaft, so that the output shaft is directly connected with the universal connecting shaft, the hidden danger of equipment is eliminated, and the transmission stability is improved.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the description will be briefly introduced below, and it is apparent that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of an output structure of a vertical longitudinal speed reducer in the prior art.
Fig. 2 is a schematic structural diagram of the output shaft and the universal joint shaft in the embodiment of the present invention.
Fig. 3 is a schematic structural view of a transmission gear according to an embodiment of the present invention.
Fig. 4 is a partially enlarged view of a portion a in fig. 3.
Fig. 5 is a top view of fig. 3.
Fig. 6 is a schematic structural diagram of an output shaft according to an embodiment of the present invention.
Fig. 7 is a schematic structural view of a connector according to an embodiment of the present invention.
Fig. 8 is a schematic structural view of the first end face tooth and the second end face tooth in the embodiment of the invention.
FIG. 9 is a schematic diagram of the position of the output shaft in engagement with the drive gear in accordance with an embodiment of the present invention.
FIG. 10 is a schematic illustration of the position of the output shaft in another operating state according to the preferred embodiment of the present invention.
In the figure, 1, a hydraulic cylinder, 2, a piston rod, 3, an output shaft, 4, a transition gear sleeve, 5, a universal spindle, 6, a main transmission spindle, 7, a gear box, 8, a box cover, 9, a through hole, 10, a connecting piece, 11, a flat key, 12, a mounting hole, 13, a flange plate, 14, a transmission gear, 15, a fixing sleeve, 16, gear teeth, 17, a spline groove, 18, a spline, 19, a thin oil passage, 20, a first oil outlet, 21, a second oil outlet, 22, a third oil outlet, 23, a first end face tooth, 24 and a second end face tooth.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the present embodiment, and it is apparent that the embodiments described below are only a part of embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments in this patent without making creative efforts, shall fall within the protection scope of this patent.
As shown in fig. 2 to 10, an output structure of a vertical speed reducer for a vertical rolling mill comprises an output shaft 3, a hydraulic cylinder 1 is arranged above the output shaft 3, the upper end of the output shaft 3 is rotatably connected with the lower end of a piston rod 2 in the hydraulic cylinder 1, and a universal shaft 5 is arranged below the output shaft 3; the lower end face of the output shaft 3 is provided with a first end face tooth 23, the upper end face of the universal joint shaft 5 is provided with a second end face tooth 24, and the first end face tooth 23 is meshed with the second end face tooth 24; the output shaft 3 is further provided with a transmission gear 14, the transmission gear 14 is provided with a spline groove 17, the outer peripheral surface of the output shaft 3 is provided with a spline 18 matched with the spline groove 17, the length of the spline 18 is larger than that of the spline groove 17, and the piston rod 2 can stretch and retract to change the connection position between the output shaft 3 and the transmission gear 14. The first face teeth 23 and the second face teeth 24 can be set to be helical teeth; when the device is started, the first end face teeth 23 and the second end face teeth 24 are meshed to transmit torque, and the bolts used for auxiliary fixing only play a role in ensuring the coaxiality of the output shaft and the universal joint and bearing the weight of the universal joint.
In the present embodiment, the specific structure of the output shaft 3 is: the output shaft 3 is arranged in a hollow mode, the piston rod 2 is connected with the output shaft 3 through a connecting piece 10, the diameter of the connecting piece 10 is matched with the inner diameter of the output shaft 3, and the piston rod 2 can rotate relative to the connecting piece 10; the upper end of the connecting piece 10 is provided with a flange 13, the connecting piece 10 is inserted at one end of the output shaft 3, and the flange 13 is contacted with and fixedly connected with the end surface of the output shaft 3. As shown in fig. 6, the outer side of the output shaft 3 is matched with the transmission gear 14 through the spline 18, the inner wall of the output shaft 3 and the piston rod 2 can rotate relatively, and the connecting piece 10 is in plug-in fit with the output shaft 3, so that the position accuracy of the output shaft 3 after detection and replacement is completed can be ensured, and the coaxiality of the output shaft 3 and the transmission gear 14 in the process of re-installation is prevented from being influenced.
Wherein, be provided with mounting hole 12 on the connecting piece 10, the lower extreme of piston rod 2 is located mounting hole 12, and piston rod 2 passes through the bearing with connecting piece 10 and is connected. The piston rod 2 and the connecting piece 10 are installed in a matched mode through bearings, and impact on the piston rod 2 in the moment when the output shaft 3 is matched with the transmission gear 14 is eliminated.
On the other hand, the transmission gear 14 is installed in the gear box 7, a box cover 8 is arranged above the gear box 7, a through hole 9 is formed in the top of the box cover 8, the hydraulic cylinder 1 is fixed above the box cover 8, the piston rod 2 penetrates through the through hole 9 to extend into the box cover 8 and is connected with the output shaft 3, and the output shaft 3 can slide in the gear box 7 along the length direction. As shown in fig. 8 and 9, the adjusting hydraulic cylinder 1 can drive the output shaft 3 to slide in the gear box 7 through the piston rod 2, so as to facilitate the detection and assembly and disassembly of the output shaft 3.
As shown in fig. 3, the transmission gear 14 includes a fixed sleeve 15, a certain number of gear teeth 16 are disposed on the outer periphery of the fixed sleeve 15, a spline groove 17 is disposed on the inner wall of the fixed sleeve 15, the spline groove 17 is disposed at the upper end of the fixed sleeve 15, and the length of the spline groove 17 is not more than one third of the length of the fixed sleeve 15. By arranging the output shaft 3 to be connected with the transmission gear 14 through the spline 18, the mode that the output shaft and the gear are fixedly connected through a key in the prior art and torque is transmitted through the flat key 11 and interference is changed, so that the transmission gap is positioned between the spline 18 on the periphery of the output shaft 3 and the spline groove 17 on the inner wall of the fixed sleeve 15, and the transmission stability of the device is effectively improved; can guarantee between output shaft 3 and the fixed cover 15 can enough mutually support the transmission moment of torsion and can make output shaft 3 along the endwise slip again, be convenient for reduce output shaft 3's the assembly degree of difficulty.
The upper end and the lower end of the fixed sleeve 15 are connected with the gear box 7 through bearings. Specifically, the length of the fixing sleeve 15 is adapted to the width of the gear box 7, as shown in fig. 3 and 4, fixing rings can be mounted on the upper end face and the lower end face of the fixing sleeve 15, and the fixing sleeve 15 is connected with the fixing rings through bolts, so that the stability of the transmission gear 14 is ensured, and the transmission gear 14 is prevented from axially moving in a staggered manner when being matched with the output shaft 3; the upper part of the fixed sleeve 15 is provided with a tapered roller bearing, the outer side of the tapered roller bearing is provided with a bushing, a spacing ring is arranged between the tapered roller bearing and the bushing and between the tapered roller bearing and the fixed ring, the lower end of the fixed sleeve 15 is provided with a cylindrical roller bearing, the outer side of the cylindrical roller bearing is provided with the bushing, and the spacing ring is arranged between the cylindrical roller bearing and the fixed ring, so that the components are prevented from shaking or rubbing in the power transmission process, and the stability of transmission is improved; the output shaft 3 can smoothly slide in the fixing sleeve 15 along the axial direction, and the movement of the output shaft 3 in different working states is realized; the arrangement of the fixing sleeve 15 with the width equal to that of the gear box 7 can reduce the assembly difficulty of the device, and is convenient for positioning, mounting and dismounting the fixing sleeve 15.
As shown in fig. 6, the output shaft 3 is further provided with a certain number of bolts, the bolts are evenly distributed on the lower end face of the output shaft 3, the universal joint 5 is provided with a threaded hole matched with the universal joint, and the bolts penetrate through the threaded hole to fixedly connect the universal joint 5 and the output shaft 3. The arrangement of a certain number of bolts can play a role in assisting in fixing the output shaft 3 and the universal joint shaft 5, so that the connection stability of the output shaft 3 and the universal joint shaft 5 is ensured, and the coaxiality of the output shaft and the universal joint shaft is further ensured; the bolt only plays a role of auxiliary fixing to further ensure the coaxiality of the bolt and the bolt, and torque transmission between the bolt and the bolt is realized by means of meshing between the first face tooth 23 and the second face tooth 24.
In addition, based on the specific structure and installation position of the output shaft 3, the hydraulic cylinder 1 and the transmission gear 14, the device further comprises a thin oil channel 19, as shown in fig. 8 and 9: the thin oil passage 19 comprises a first oil outlet 20, a second oil outlet 21 and a third oil outlet 22 which are sequentially arranged from top to bottom, the first oil outlet 20 is positioned below the through hole 9, and the first oil outlet 20 is close to the piston rod 2; the second oil outlet 21 is positioned above the gear box 7, and the second oil outlet 21 is close to the upper end of the transmission gear 14; an oil outlet three 22 is positioned in the gear box 7, and the oil outlet three 22 is close to the lower end of the transmission gear 14. The arrangement of the thin oil passage 19 can better lubricate the meshing spline part of the transmission gear 14 and the output shaft 3 and the relative rotating part such as a bearing at the lower end of the piston rod 2, can ensure the stability of transmission, and is beneficial to prolonging the service life of the device.
The use method of the vertical speed reducer output structure for the vertical rolling mill comprises the following steps:
s1: the hydraulic cylinder 1 is arranged above the box cover 8, a piston rod 2 of the hydraulic cylinder 1 extends into the box cover 8, the lower end of the piston rod 2 is connected with a connecting piece 10 through a bearing, and the end face of the output shaft 3 is fixedly connected with a flange plate 13 through a bolt;
s2: one end of the transmission gear 14, which is provided with a spline groove 17, is arranged close to the hydraulic cylinder 1, the upper end and the lower end of the fixed sleeve 15 are matched with a bearing of the gear box 7, a spline 18 on the periphery of the output shaft 3 is matched with the spline groove 17 on the inner wall of the fixed sleeve 15, and the box cover 8 is arranged above the gear box 7;
s3: connecting the output shaft 3 with the universal joint shaft 5, meshing the first end face teeth 23 with the second end face teeth 24, and fixing the output shaft 3 and the universal joint shaft 5 by using bolts in an auxiliary manner; and adjusting the hydraulic cylinder 1 to enable the piston rod 2 to drive the output shaft 3 to slide along the axial direction of the fixed sleeve 15 until the connecting piece 10 at the upper end of the output shaft 3 is close to the top of the box cover 8, wherein the bearing in the mounting hole 12 can be adapted to the position of the first oil outlet 20. The connecting mode of connecting the output shaft 3 with the main transmission connecting shaft 6 through the gear sleeve is broken, the piston rod 2 of the hydraulic cylinder 1 bears the weight of the output shaft 3 and the universal connecting shaft 5, the dismounting is convenient, and the purposes of fast replacement and output shaft inspection are achieved.
The working principle of the vertical speed reducer output structure for the vertical rolling mill is as follows:
during assembly: the hydraulic cylinder 1 is arranged above the box cover 8, a piston rod 2 of the hydraulic cylinder 1 can extend into the box cover 8, the piston rod 2 is connected with a connecting piece 10, the lower end of the piston rod 2 is connected with the connecting piece 10 through a bearing, and the end face of the output shaft 3 is in bolt connection with a flange 13 of the connecting piece 10; when the transmission gear 14 is installed, one end, provided with the spline groove 17, of the transmission gear 14 is installed close to the hydraulic cylinder 1, the upper end and the lower end of the fixing sleeve 15 are matched with the bearing of the gear box 7, then the spline 18 on the periphery of the output shaft 3 is matched with the spline groove 17 on the inner wall of the fixing sleeve 15, and finally the box cover 8 is installed above the gear box 7;
when the output shaft 3 is connected 5 with the universal joint shaft: firstly, connecting an output shaft 3 with a universal spindle 5, meshing a first end face tooth 23 with a second end face tooth 24, and fixing the universal spindle 5 and the output shaft 3 by using bolts to ensure the coaxiality between the universal spindle 5 and the output shaft 3; then, adjusting the hydraulic cylinder 1, driving the output shaft 3 to slide axially in the fixed sleeve 15 through the piston rod 2 until the connecting piece 10 at the upper end of the output shaft 3 is close to the top of the box cover 8, and enabling the spline 18 on the periphery of the output shaft 3 to be matched with the spline groove 17 in the fixed sleeve 15 so that the bearing in the mounting hole 12 can be matched with the first oil outlet 20; and finally, starting the motor. Similarly, when the universal spindle 5 needs to be detached, the hydraulic cylinder 1 is adjusted to drive the output shaft 3 to slide along the length direction of the output shaft 3 through the piston rod 2, so that the output shaft 3 gradually moves into the gear box 7 until the connecting end of the output shaft 3 and the universal spindle 5 is exposed from the lower side of the gear box 7, and then the bolt for assisting in fixing can be detached to detach the universal spindle 5.
When the output shaft 3 is detected and replaced: adjusting the hydraulic cylinder 1 to enable the piston rod 2 to drive the output shaft 3 to slide along the axial direction of the fixed sleeve 15, so that the output shaft 3 gradually moves into the gear box 7 and is exposed from the lower part of the gear box 7, and the joint of the output shaft 3 and the universal joint shaft 5 is detected; when the output shaft 3 needs to be replaced, only after the universal spindle 5 needs to be detached, the output shaft 3 can be driven to be synchronously detached by detaching the box cover 8 and the hydraulic cylinder 1, the connecting piece 10 is connected with the output shaft 3 through the flange plate 13 and the bolt, so that the disassembly, the replacement and the connection are convenient, the original connection mode of the output shaft 3, the main transmission spindle 6 and the transmission gear 14 is broken, the output shaft 3 is meshed with the transmission gear 14 through the spline 18 to transmit torque, the output shaft 3 is meshed with the universal spindle 5 through the end face teeth I23 and the end face teeth II 24 to transmit torque, the disassembly and the assembly are convenient, and the assembly difficulty between the output shaft 3 and the transmission gear 14 and between the universal spindle 5 is greatly reduced.
The terms "upper," "lower," "outer," "inner" and the like in the description and in the claims of the invention and in the drawings described above (if any, are used for distinguishing relative positions without necessarily being limiting.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims (9)

1. The vertical speed reducer output structure for the vertical rolling mill is characterized by comprising an output shaft (3), wherein a hydraulic cylinder (1) is arranged above the output shaft (3), the upper end of the output shaft (3) is rotatably connected with the lower end of a piston rod (2) in the hydraulic cylinder (1), and a universal joint shaft (5) is arranged below the output shaft (3); the lower end face of the output shaft (3) is provided with a first end face tooth (23), the upper end face of the universal joint shaft (5) is provided with a second end face tooth (24), and the first end face tooth (23) is meshed with the second end face tooth (24); the output shaft (3) is further provided with a transmission gear (14), the transmission gear (14) is provided with a spline groove (17), the outer peripheral surface of the output shaft (3) is provided with a spline (18) matched with the spline groove (17), the length of the spline (18) is larger than that of the spline groove (17), and the piston rod (2) can stretch and retract to change the connection position between the output shaft (3) and the transmission gear (14).
2. The vertical speed reducer output structure for the vertical rolling mill according to claim 1, wherein the transmission gear (14) is installed in the gear box (7), a box cover (8) is arranged above the gear box (7), a through hole (9) is formed in the top of the box cover (8), the hydraulic cylinder (1) is fixed above the box cover (8), the piston rod (2) penetrates through the through hole (9) and extends into the box cover (8) and is connected with the output shaft (3), and the output shaft (3) can slide in the gear box (7) along the length direction.
3. The vertical reducer output structure for the vertical rolling mill according to claim 1, wherein the output shaft (3) is further provided with a certain number of bolts, the bolts are evenly distributed on the lower end face of the output shaft (3), the universal joint shaft (5) is provided with threaded holes matched with the threaded bolts, and the bolts penetrate through the threaded holes to fixedly connect the universal joint shaft (5) and the output shaft (3).
4. The vertical speed reducer output structure for the vertical rolling mill according to claim 1, wherein the output shaft (3) is hollow, the piston rod (2) is connected with the output shaft (3) through a connecting piece (10), the diameter of the connecting piece (10) is matched with the inner diameter of the output shaft (3), and the piston rod (2) can rotate relative to the connecting piece (10); the upper end of the connecting piece (10) is provided with a flange (13), the connecting piece (10) is inserted at one end of the output shaft (3), and the flange (13) is contacted with and fixedly connected with the end surface of the output shaft (3).
5. The vertical reducer output structure for the vertical rolling mill according to claim 4, wherein the connecting piece (10) is provided with a mounting hole (12), the lower end of the piston rod (2) is located in the mounting hole (12), and the piston rod (2) is connected with the connecting piece (10) through a bearing.
6. The vertical reducer output structure for the vertical rolling mill according to claim 1, wherein the transmission gear (14) comprises a fixed sleeve (15), a certain number of gear teeth (16) are arranged on the outer periphery of the fixed sleeve (15), a spline groove (17) is arranged on the inner wall of the fixed sleeve (15), the spline groove (17) is positioned at the upper end of the fixed sleeve (15), and the length of the spline groove (17) is not more than one third of the length of the fixed sleeve (15).
7. The vertical reducer output structure for the vertical rolling mill according to claim 6, wherein the upper and lower ends of the fixing sleeve (15) are connected with the gear box (7) through bearings.
8. The vertical speed reducer output structure for the vertical rolling mill according to claim 2, characterized by further comprising a thin oil passage (19), wherein the thin oil passage (19) comprises a first oil outlet (20), a second oil outlet (21) and a third oil outlet (22) which are sequentially arranged from top to bottom, the first oil outlet (20) is located below the through hole (9), and the first oil outlet (20) is close to the piston rod (2); the second oil outlet (21) is positioned above the gear box (7), and the second oil outlet (21) is close to the upper end of the transmission gear (14); an oil outlet III (22) is positioned in the gear box (7), and the oil outlet III (22) is close to the lower end of the transmission gear (14).
9. A method for using a vertical reduction gear output structure for a vertical rolling mill, characterized by using the vertical reduction gear output structure for a vertical rolling mill according to any one of claims 1 to 8, comprising the steps of:
s1: a hydraulic cylinder (1) is arranged above a box cover (8), and a piston rod (2) of the hydraulic cylinder (1)
The lower end of the piston rod (2) is connected with a connecting piece (10) through a bearing, and the end surface of the output shaft (3) is fixedly connected with a flange plate (13) through a bolt;
s2: one end of a transmission gear (14) provided with a spline groove (17) is arranged close to the hydraulic cylinder (1), the upper end and the lower end of a fixed sleeve (15) are matched with a bearing of a gear box (7), a spline (18) on the periphery of an output shaft (3) is matched with the spline groove (17) on the inner wall of the fixed sleeve (15), and a box cover (8) is arranged above the gear box (7);
s3: connecting the output shaft (3) with the universal spindle (5), meshing the first end face teeth (23) with the second end face teeth (24), and fixing the output shaft (3) and the universal spindle (5) by using bolts in an auxiliary manner; the hydraulic cylinder (1) is adjusted, so that the piston rod (2) drives the output shaft (3) to slide along the axial direction of the fixed sleeve (15) until the connecting piece (10) at the upper end of the output shaft (3) is close to the top of the box cover (8), and the bearing in the mounting hole (12) can be adapted to the position of the first oil outlet (20).
CN202210290032.4A 2022-03-23 2022-03-23 Vertical speed reducer output structure for vertical rolling mill and use method thereof Pending CN114635956A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202210290032.4A CN114635956A (en) 2022-03-23 2022-03-23 Vertical speed reducer output structure for vertical rolling mill and use method thereof

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202210290032.4A CN114635956A (en) 2022-03-23 2022-03-23 Vertical speed reducer output structure for vertical rolling mill and use method thereof

Publications (1)

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CN114635956A true CN114635956A (en) 2022-06-17

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