CN212442557U

CN212442557U - Single-shaft transmission roller detachable three-roller mill

Info

Publication number: CN212442557U
Application number: CN202021316719.3U
Authority: CN
Inventors: 董兴亮; 冯春安; 杨维清; 何文祥; 邓兵; 唐菠; 魏稼丰
Original assignee: Sichuan Yishang Tianjiao Industrial Co ltd
Current assignee: Sichuan Yishang Tianjiao Industrial Co ltd
Priority date: 2020-07-07
Filing date: 2020-07-07
Publication date: 2021-02-02
Anticipated expiration: 2030-07-07

Abstract

The utility model relates to a rod mill technical field provides a removable three roller mill of unipolar transmission roll, include the frame and mutually become three group's axle subassemblies that 60 set up in the frame, the frame be the subdivision formula structure, three group's axle subassemblies include a set of input major axis subassembly and two sets of transmission minor axis subassemblies, transmission minor axis subassembly and input major axis subassembly be connected the transmission. The utility model adopts the split frame and the long and short shaft components to form the three-roller mill with simple and reliable transmission structure, thereby greatly reducing the investment cost through the more simplified structure; when carrying out equipment maintenance, the accessible is disassembled the mode fast and is demolishd the roll fast, has kept the precision that the roll was dismantled and is installed, does not influence and install once more and use.

Description

Single-shaft transmission roller detachable three-roller mill

Technical Field

The utility model relates to a rod mill technical field, concretely relates to three-roller rod line rolling mill especially relates to a removable three-roller mill of unipolar transmission roll.

Background

The rod three-roller mill commonly used in the industry at present comprises a three-shaft driving type and a single-shaft driving type, wherein the three-shaft driving type three-roller mill realizes rolling through three-shaft synchronous rotation, and the single-shaft driving type three-roller mill realizes rolling of rods through driving of two shafts in addition through an input shaft.

When the three-shaft driving type rolling mill rolls, the stress of a rolled piece at three angles is balanced, the rolling force of the roller is large, each shaft of the single three-shaft driving type rolling mill is required to be provided with an independent power system or a plurality of groups of change gear boxes are adopted to change the driving direction, the transmission chain of the whole driving module is complex, and the system manufacturing cost is high. When equipment is installed and maintained, the three-shaft driving type roller is mostly assembled and disassembled in a pressing mode, and the roller can be conveniently and quickly disassembled, repaired and installed.

The single-shaft transmission type rolling mill has a simple transmission system, the roller in the rolling mill is fixedly installed, the roller cannot be quickly disassembled under the condition that a rack body is not disassembled, the roller hole pattern is easily abraded in actual rolling, and the purpose of reducing and sizing cannot be achieved due to overlarge abrasion loss; needs to be repaired and reused after being used for a period of time. When metals with high strength and poor shaping, such as tungsten, molybdenum, titanium and the like, are rolled, a single-shaft driving type rolling mill is adopted, the wear loss of a hole pattern is large, the replacement frequency of the roller is high, the inside of the whole rack needs to be opened to realize the disassembly and repair of the roller, after the rack is disassembled, all parts are difficult to be re-assembled to the correct position, and when the rack is reused after being disassembled, the unreliable rolling process is often caused due to the installation problem, so the time and the capital cost of equipment maintenance are high. If the mode of not dismantling equipment is adopted for maintenance, the roll collar is kept on the rack for grinding and repairing, so that a better repairing effect can be achieved on the roll collar for machining the flat triangular hole pattern, and the roll collar for machining the arc triangular hole pattern and the roll collar for machining the tangent hole pattern are difficult to achieve a better repairing effect.

Therefore, the existing bar three-roller rolling mill equipment still has the improvement part, needs to be improved and optimized to obtain a more reasonable technical scheme, and solves the defects in the prior art.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art mentioned in the above content, the utility model provides a three-high mill with detachable single-shaft transmission rollers, which aims to improve a single-shaft driving type rolling mill, is convenient for disassembly and assembly to maintain the equipment, achieves the purpose of quickly maintaining the equipment and accurately installing parts to ensure the processing precision.

In order to achieve the above object, the utility model discloses the technical scheme who specifically adopts is:

the detachable three-roller mill with single-shaft transmission rollers comprises a rack and three sets of shaft assemblies which are arranged on the rack in an angle of 60 degrees, wherein the rack is of a split structure, the three sets of shaft assemblies comprise a set of input long shaft assemblies and two sets of transmission short shaft assemblies, and the transmission short shaft assemblies are connected with the input long shaft assemblies for transmission.

According to the three-roller rolling mill, the frame is of a split structure, so that the inner shaft assembly can be conveniently disassembled and maintained after being opened, the efficiency of assembling and disassembling the equipment is improved, and the maintenance cost is reduced; meanwhile, the two groups of transmission short shaft assemblies are directly transmitted through the input long shaft assembly, so that the structure of the transmission assembly is greatly simplified.

Further, the input long shaft assembly transmits the driving force to the other two short shaft assemblies by connecting an external driving device, and the structure of the input long shaft assembly is described here, and the following possible schemes are given: the input long shaft assembly comprises a long tension pull rod, a roller is arranged on the long tension pull rod, and the roller is fixed on the long tension pull rod through a clamping flange A and a clamping flange B and rotates along with a shaft; the clamping flange A and the clamping flange B are respectively provided with a bevel gear sleeve.

Furthermore, the input long shaft assembly is described in the above, the clamping flange a and the clamping flange B are both rotatably sleeved with the fixed flange a, the front part of the fixed flange a, the clamping flange a and the clamping flange B form a sealing structure, the rear part of the fixed flange a rotates relative to the bevel gear sleeve, and the tooth part of the bevel gear sleeve extends out of the rear part of the fixed flange a.

Furthermore, the number of the fixed flanges A is two, a rotating space is provided for the clamping flange A and the clamping flange B after the fixed flanges A are oppositely arranged on the rack, the fixed flanges A are fixedly connected with the rack, a cylindrical rotating space is formed inside the fixed flanges A, and in order to enable the relative rotation between the clamping flange A, the clamping flange B and the fixed flanges A to be smoother, the fixed flanges A are provided with bearings which can adopt cylindrical roller bearings, the inner rings of the cylindrical roller bearings are sleeved on the clamping flange A and the clamping flange B, and the outer rings of the cylindrical roller bearings are arranged in the rotating space of the fixed flanges A; similarly, the bevel gear sleeve sleeved on the clamping flange A and the clamping flange B also rotates relative to the fixed flange A, a bearing is arranged between the fixed flange A and the bevel gear sleeve, and a tapered roller bearing can be adopted, so that the axial force generated on the bevel gear sleeve is offset.

Furthermore, the power of the transmission short shaft assembly is from the driving long shaft assembly, the structure of the transmission short shaft assembly can adopt various schemes, and the following specific schemes are optimized and proposed here: the transmission short shaft assembly comprises a short tension pull rod, a roller is arranged on the short tension pull rod, and the roller is fixed on the short tension pull rod through a clamping flange C and a clamping flange D and rotates along with a shaft; the clamping flange D is provided with a bevel gear sleeve and is meshed with the bevel gear sleeve of the clamping flange A or the clamping flange B.

Still further, similar to the driving long shaft assembly, the driving short shaft assembly also needs to provide a rotation space externally when rotating, and the optimization is performed according to the composition structure of the driving short shaft assembly, and the following specific feasible schemes are provided: the clamping flange D on rotate the cover and be equipped with mounting flange B, mounting flange B's front portion and clamping flange D form seal structure, mounting flange B's rear portion and bevel gear cover rotate relatively, the tooth portion of bevel gear cover stretches out from mounting flange D's rear portion.

And further, a clamping flange C on the transmission short shaft assembly also rotates relative to the rack, specifically, a fixing flange C is sleeved on the clamping flange C in a rotating mode, and the front part of the fixing flange C and the clamping flange C form a sealing structure.

The fixed flange C and the fixed flange B are oppositely arranged to be a clamping flange C and a clamping flange D to provide a rotating space, so that the roller on the short tension pull rod can keep the axial positioning and rotate along with the shaft.

The fixing flange B and the fixing flange C are connected and fixed on the rack, a rotating space is formed inside the fixing flange B and the fixing flange C, and cylindrical roller bearings are arranged on the clamping flange C and the clamping flange D in order to enable the clamping flange C and the clamping flange D to rotate more smoothly; and in order to make the bevel gear sleeve rotate more smoothly, a tapered roller bearing is arranged between the bevel gear sleeve and the fixed flange B, and the tapered roller bearing can help offset the axial force caused by the bevel gear sleeve.

Furthermore, an adjusting flange A and a sealing element are sleeved on the clamping flange A, the sealing element is positioned on the outer side of the adjusting flange A, the adjusting flange A and the clamping flange A rotate relatively, and the sealing element rotates synchronously with the clamping flange A; the clamping flange C is sleeved with an adjusting flange B and a sealing element, the sealing element is located on the outer side of the adjusting flange B, the adjusting flange B and the clamping flange C rotate relatively, and the sealing element rotates synchronously along with the clamping flange C.

The adjusting flange A and the adjusting flange B are in contact and fixedly arranged on the rack, bearings are sleeved in the adjusting flange A and the adjusting flange B, and the sealing element is positioned on the outer side of the bearing and is used for providing a sealing environment for the bearing and keeping the working stability of the bearing; the inboard of bearing is provided with the nut and supports the piece, and when the quantity of bearing was greater than one, still need set up parts such as bush or spacer and carry out the interval between the adjacent bearing and support tightly.

Furthermore, the rear end part of the long tension pull rod is provided with a driving taper sleeve, the driving taper sleeve is sleeved on the clamping flange A and synchronously rotates along with the clamping flange A, and a locking part A is further arranged on the long tension pull rod to lock the driving taper sleeve and the clamping flange A.

The driving taper sleeve is provided with an oil hole, high-pressure hydraulic oil can be injected into a rotating space formed by the clamping flange A and the clamping flange B through the oil hole, a center hole of the roller is expanded, the long tension pull rod is conveniently pulled out, and therefore the roller is rapidly disassembled.

And furthermore, a fixed taper sleeve is arranged at the end part of the short tension pull rod, the fixed taper sleeve is sleeved on the clamping flange C and rotates coaxially with the clamping flange C, and a locking piece B is further arranged on the short tension pull rod to lock the fixed taper sleeve and the clamping flange C.

Similarly, the fixed taper sleeve is also provided with an oil hole, high-pressure hydraulic oil can be injected into a rotating space formed by the oil hole in the clamping flange C and the clamping flange D, so that a center hole of the roller is expanded, the short tension pull rod can be conveniently pulled out, and the roller can be rapidly disassembled.

Due to the fact that the driving taper sleeve and the fixing taper sleeve are arranged, the roller can be rapidly disassembled in a mode of injecting high-pressure hydraulic oil under the condition that the rack is not disassembled, and the roller is quite convenient to use.

Compared with the prior art, the utility model discloses the beneficial effect who has is:

the utility model adopts the split frame and the long and short shaft components to form the three-roller mill with simple and reliable transmission structure, thereby greatly reducing the investment cost through the more simplified structure; when carrying out equipment maintenance, the accessible is disassembled the mode fast and is demolishd the roll fast, has kept the precision that the roll was dismantled and is installed, does not influence and install once more and use.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to these drawings without creative efforts.

FIG. 1 is a schematic sectional view of a three-high rolling mill;

FIG. 2 is a schematic cross-sectional view of a drive shaft assembly;

FIG. 3 is a cross-sectional structural schematic view of the drive stub shaft assembly.

In the above drawings, the meanings of the respective symbols are: 1. a frame; 2. driving the long shaft assembly; 3. a drive stub shaft assembly; 4. rolling; 5. a bevel gear sleeve; 6. an outer nut A; 7. a tapered roller bearing; 8. a spacer sleeve; 9. a round nut B; 10. a round nut A; 11. a cylindrical roller bearing; 12. a fixed flange A; 13. clamping the flange B; 14. clamping the flange A; 15. a long tension pull rod; 16. an outer nut B; 17. a bushing; 18. a ball bearing; 19. adjusting the flange A; 20. a seal member; 21. an adjusting screw; 22. a round nut C; 23. driving the taper sleeve; 24. locking the nut A; 25. clamping the flange D; 26. clamping the flange C; 27. a fixed flange C; 28. adjusting the flange B; 29. fixing a taper sleeve; 30. locking the nut B; 31. a short tension pull rod; 32. and fixing the flange B.

Detailed Description

The present invention will be further explained with reference to the drawings and the embodiments.

It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.

Examples

As shown in fig. 1, 2 and 3, the three-high mill used in the present embodiment is mainly used for rolling bars, especially for rolling bars with arc triangular pass and tangential pass. One of the characteristics of the three-roller mill of the embodiment is that the transmission structure is simple, one driving shaft drives the other two driving shafts to rotate, no complex transmission structure exists, the installation is simple, the precision is higher, and the three-roller mill is stable and reliable after being used for a long time; the other characteristic is that the disassembly and the maintenance are convenient, the disassembly and the assembly of the roller 4 can be completed quickly, and the working precision is not influenced.

The detachable three-roller mill with the single-shaft transmission rollers 4 comprises a frame 1 and three shaft assemblies which are arranged on the frame 1 in an angle of 60 degrees, wherein the frame 1 is of a split structure, the three shaft assemblies comprise a group of input long shaft assemblies and two groups of transmission short shaft assemblies 3, and the transmission short shaft assemblies 3 are connected with the input long shaft assemblies for transmission.

According to the three-roller rolling mill, the rack 1 is of a split structure, specifically, the rack 1 comprises two parts which are buckled with each other, and each part is provided with the installation positions for installing the driving long shaft assembly 2 and the transmission short shaft assembly 3, so that the internal shaft assembly can be conveniently opened for dismounting and maintenance, the efficiency of mounting and dismounting equipment is improved, and the maintenance cost is reduced; meanwhile, the two groups of transmission short shaft assemblies 3 are directly transmitted through the input long shaft assembly, so that the structure of the transmission assembly is greatly simplified.

The structure of the input long-axis assembly, which transmits the driving force to the other two short-axis assemblies by connecting an external driving device, is described here, and the following possible schemes are given: the input long shaft assembly comprises a long tension pull rod 15, a roller 4 is arranged on the long tension pull rod 15, and the roller 4 is fixed on the long tension pull rod 15 through a clamping flange A14 and a clamping flange B13 and rotates along with the shaft; bevel gear sleeves 5 are further respectively arranged on the clamping flange A14 and the clamping flange B13.

Preferably, the front end of the long tension pull rod 15 is located at the clamping flange B13, and the long tension pull rod 15 is in fit connection with the clamping flange B13 through threads. The rear end of the long tension pull rod 15 is positioned at one end of the clamping flange A14 and extends out of the clamping flange A14, the rear end of the long tension pull rod 15 is connected to a driving device, and the driving force is transmitted to the clamping flange B13 to drive the long tension pull rod 15 and the roller 4 on the short tension pull rod 31 to rotate.

In the above description, the input long shaft assembly is described, the clamping flange a14 and the clamping flange B13 are both rotatably sleeved with the fixed flange a12, the front part of the fixed flange a12, the clamping flange a14 and the clamping flange B13 form a sealing structure, the rear part of the fixed flange a12 rotates relative to the bevel gear sleeve 5, and the tooth part of the bevel gear sleeve 5 protrudes out of the rear part of the fixed flange a 12.

The number of the fixed flanges A12 is two, a rotating space is provided for the clamping flange A14 and the clamping flange B13 after the fixed flanges A12 and the rack 1 are oppositely arranged, the fixed flanges A12 are fixedly connected with the rack 1, a cylindrical rotating space is formed inside the fixed flanges A12, in order to enable the relative rotation between the clamping flange A14, the clamping flange B13 and the fixed flange A12 to be smoother, bearings are arranged on the fixed flanges A12 and can adopt cylindrical roller bearings 11, inner rings of the cylindrical roller bearings 11 are sleeved on the clamping flange A14 and the clamping flange B13, and outer rings of the cylindrical roller bearings 11 are arranged in the rotating space of the fixed flanges A12; similarly, the bevel gear sleeve 5 sleeved on the clamping flange a14 and the clamping flange B13 also rotates relative to the fixed flange a12, and a bearing is arranged between the fixed flange a12 and the bevel gear sleeve 5, and a tapered roller bearing 7 can be adopted here, so that the axial force generated on the bevel gear sleeve 5 is offset.

Preferably, when one cylindrical roller bearing 11 is arranged on each of the clamping flange a14 and the clamping flange B13, the cylindrical roller bearings are arranged according to the second number, and the outer ring and the inner ring of each cylindrical roller bearing 11 can be separated from each other; when each conical roller bearing 7 is arranged, the arrangement is carried out according to the number two, the spacer bushes 8 are arranged between the adjacent conical roller bearings 7 for spacing positioning, the outer nut A6 and the round nut B9 are arranged outside the conical roller bearings 7 for limiting and abutting, and the round nut A10 is arranged outside the cylindrical roller bearing 11 for limiting and abutting.

The power of the transmission short shaft component 3 is from the driving long shaft component 2, the structure of the transmission short shaft component 3 can adopt various schemes, and the following specific schemes are optimized and mentioned here: the transmission short shaft assembly 3 comprises a short tension pull rod 31, a roller 4 is arranged on the short tension pull rod 31, and the roller 4 is fixed on the short tension pull rod 31 through a clamping flange C26 and a clamping flange D25 and rotates along with the shaft; the clamping flange D25 is provided with a bevel gear sleeve 5 and meshes with the bevel gear sleeve 5 of the clamping flange a14 or the clamping flange B13.

Preferably, the rollers 4 on the tension rods are engaged with each other at 120 °.

Preferably, the front end of the short tension rod 31 is located at the clamping flange D25, which is connected with the clamping flange by screw threads and rotates synchronously; the rear end of the short tension pull rod 31 is positioned at the clamping flange C26, and the rear end of the end tension pull rod plays a role in fastening and fixing to keep the integrity of the transmission short shaft assembly 3; the drive of drive stub shaft assembly 3 is derived from the meshing drive between bevel gear sleeve 5 on clamping flange D25 and bevel gear sleeve 5 on drive stub shaft assembly 2.

Similar to the driving long shaft assembly 2, the driving short shaft assembly 3 also needs to provide a rotation space externally when rotating, and the optimization is performed according to the composition structure of the driving short shaft assembly 3, and the following specific feasible schemes are provided: the clamping flange D25 on rotate the cover and be equipped with mounting flange B32, mounting flange B32's anterior and clamping flange D25 form seal structure, mounting flange B32's rear portion and bevel gear cover 5 relative rotation, the tooth portion of bevel gear cover 5 stretches out from mounting flange D's rear portion.

The clamping flange C26 on the transmission short shaft assembly 3 also rotates relative to the frame 1, specifically, the clamping flange C26 is rotatably sleeved with a fixing flange C27, and the front part of the fixing flange C27 and the clamping flange C26 form a sealing structure. In this embodiment, a labyrinth seal structure is adopted.

The relative arrangement of the fixing flange C27 and the fixing flange B32 provides a rotation space for the clamping flange C26 and the clamping flange D25, so that the roller 4 on the short tension pull rod 31 can maintain the axial positioning and rotate with the shaft.

The fixed flange B32 and the fixed flange C27 are fixedly connected to the frame 1, a rotating space is formed in the fixed flange B32 and the fixed flange C27, and in order to enable the clamping flange C26 and the clamping flange D25 to rotate more smoothly, cylindrical roller bearings 11 are arranged on the clamping flange C26 and the clamping flange D25; and in order to make the bevel gear sleeve 5 rotate more smoothly, a tapered roller bearing 7 is arranged between the bevel gear sleeve 5 and the fixed flange B32, and the tapered roller bearing 7 can help offset the axial force caused by the bevel gear sleeve 5.

Preferably, when one cylindrical roller bearing 11 is arranged on each of the clamping flange C26 and the clamping flange D25, the cylindrical roller bearings are arranged according to the second number, and the outer ring and the inner ring of each cylindrical roller bearing 11 can be separated from each other; when each tapered roller bearing 7 is arranged, the tapered roller bearings are arranged according to the number two, and the spacer bushes 8 are arranged between the adjacent tapered roller bearings 7 for spacing positioning.

An adjusting flange A19 and a sealing element 20 are sleeved on the clamping flange A14, the sealing element 20 is positioned on the outer side of the adjusting flange A19, the adjusting flange A19 and the clamping flange A14 rotate relatively, and the sealing element 20 rotates synchronously with the clamping flange A14; an adjusting flange B28 and a sealing element 20 are sleeved on the clamping flange C26, the sealing element 20 is located on the outer side of the adjusting flange B28, the adjusting flange B28 and the clamping flange C26 rotate relatively, and the sealing element 20 rotates synchronously with the clamping flange C26.

The adjusting flange A19 and the adjusting flange B28 are in contact with each other and fixedly arranged on the frame 1, bearings are sleeved in the adjusting flange A19 and the adjusting flange B28, and the sealing element 20 is located on the outer side of each bearing and used for providing a sealing environment for the bearings and keeping the working stability of the bearings; the inner side of the bearing is provided with a nut abutting piece, and when the number of the bearings is more than one, parts such as a bush 17 or a spacer 8 and the like are required to be arranged between the adjacent bearings for interval abutting.

Preferably, in the embodiment, two sets of parallel ball bearings 18 are arranged between the adjusting flange a19 and the clamping flange a14, the bushings 17 are arranged between the adjacent ball bearings 18 for spacing positioning, and the outer sides of the ball bearings 18 are provided with outer nuts B16 for limiting and blocking.

A round nut C22 is arranged on the clamping flange A14 and positioned outside the sealing element 20, and is used for adjusting the position of the adjusting flange A19 and performing tight sealing; an adjusting screw 21 is provided on the adjusting flange a for assisting in the adjustment and carrying out of the adjusting flange a.

The rear end part of the long tension pull rod 15 is provided with a driving taper sleeve 23, the driving taper sleeve 23 is sleeved on the clamping flange A14 and synchronously rotates along with the clamping flange A14, and a locking piece A is further arranged on the long tension pull rod 15 to lock the driving taper sleeve 23 and the clamping flange A14.

Preferably, the locking piece a is a lock nut in this embodiment.

The driving taper sleeve 23 is provided with an oil hole, high-pressure hydraulic oil can be injected into a rotating space formed by the clamping flange A14 and the clamping flange B13 through the oil hole, so that a center hole of the roller 4 is expanded, the long tension pull rod 15 is conveniently pulled out, and the roller 4 is rapidly disassembled.

The end part of the short tension pull rod 31 is provided with a fixed taper sleeve 29, the fixed taper sleeve 29 is sleeved on the clamping flange C26 and rotates coaxially with the clamping flange C26, and a locking piece B is further arranged on the short tension pull rod 31 to lock the fixed taper sleeve 29 and the clamping flange C26.

Similarly, the fixed taper sleeve 29 is also provided with an oil hole, and high-pressure hydraulic oil can be injected into a rotating space formed by the clamping flange C26 and the clamping flange D25 through the oil hole, so that the center hole of the roller 4 is expanded, the short tension pull rod 31 can be conveniently pulled out, and the roller 4 can be rapidly disassembled.

Due to the arrangement of the driving taper sleeve 23 and the fixing taper sleeve 29, the roller 4 can be quickly disassembled in a high-pressure hydraulic oil injection mode under the condition that the rack 1 is not disassembled, and the disassembly is very convenient.

The above embodiments are just examples of the present invention, but the present invention is not limited to the above alternative embodiments, and those skilled in the art can obtain other various embodiments by arbitrarily combining the above embodiments, and any one can obtain other various embodiments by the teaching of the present invention. The above detailed description should not be taken as limiting the scope of the invention, which is defined in the following claims, and which can be used to interpret the claims.

Claims

1. The detachable three-roller mill with single-shaft transmission rollers comprises a frame (1) and three groups of shaft assemblies which are arranged on the frame (1) in an angle of 60 degrees, and is characterized in that: the machine frame (1) is of a split structure, three sets of shaft assemblies comprise a set of input long shaft assembly and two sets of transmission short shaft assemblies (3), and the transmission short shaft assemblies (3) are connected with the input long shaft assembly for transmission.

2. The single-shaft drive roll removable three-high rolling mill according to claim 1, characterized in that: the input long shaft assembly comprises a long tension pull rod (15), a roller (4) is arranged on the long tension pull rod (15), and the roller (4) is fixed on the long tension pull rod (15) through a clamping flange A (14) and a clamping flange B (13) and rotates along with a shaft; the clamping flange A (14) and the clamping flange B (13) are respectively provided with a bevel gear sleeve (5).

3. The single-shaft drive roll removable three-high rolling mill according to claim 2, characterized in that: clamping flange A (14) and clamping flange B (13) on all rotate the cover and be equipped with mounting flange A (12), mounting flange A's (12) anterior and clamping flange A (14) and clamping flange B (13) form seal structure, mounting flange A's (12) rear portion and bevel gear cover (5) rotate relatively, the tooth portion of bevel gear cover (5) is followed the rear portion of mounting flange A (12) and is visited out.

4. The single-shaft drive roll removable three-high rolling mill according to claim 3, characterized in that: and a bearing is arranged between the fixed flange A (12) and the bevel gear sleeve (5).

5. The single-shaft drive roll detachable three-high mill according to claim 2 or 3, characterized in that: the transmission short shaft assembly (3) comprises a short tension pull rod (31), a roller (4) is arranged on the short tension pull rod (31), and the roller (4) is fixed on the short tension pull rod (31) through a clamping flange C (26) and a clamping flange D (25) and rotates along with the shaft; the clamping flange D (25) is provided with a bevel gear sleeve (5) and is meshed with the bevel gear sleeve (5) of the clamping flange A (14) or the clamping flange B (13).

6. The single-shaft drive roll removable three-high rolling mill according to claim 5, characterized in that: press from both sides tight flange D (25) on rotate the cover and be equipped with mounting flange B (32), mounting flange B's (32) anterior and press from both sides tight flange D (25) and form seal structure, mounting flange B's (32) rear portion and bevel gear cover (5) relative rotation, the tooth portion of bevel gear cover (5) is followed mounting flange D's rear portion and is visited out.

7. The single-shaft drive roll removable three-high rolling mill according to claim 5, characterized in that: the clamping flange C (26) is rotatably sleeved with a fixed flange C (27), and the front part of the fixed flange C (27) and the clamping flange C (26) form a sealing structure.

8. The single-shaft drive roll removable three-high rolling mill according to claim 5, characterized in that: an adjusting flange A (19) and a sealing element (20) are sleeved on the clamping flange A (14), the sealing element (20) is positioned on the outer side of the adjusting flange A (19), the adjusting flange A (19) and the clamping flange A (14) rotate relatively, and the sealing element (20) rotates synchronously with the clamping flange A (14); an adjusting flange B (28) and a sealing element (20) are sleeved on the clamping flange C (26), the sealing element (20) is located on the outer side of the adjusting flange B (28), the adjusting flange B (28) and the clamping flange C (26) rotate relatively, and the sealing element (20) rotates synchronously with the clamping flange C (26).

9. The single-shaft drive roll removable three-high mill according to claim 8, characterized in that: the end part of the long tension pull rod (15) is provided with a driving taper sleeve (23), the driving taper sleeve (23) is sleeved on the clamping flange A (14) and synchronously rotates along with the clamping flange A (14), and a locking part A is further arranged on the long tension pull rod (15) to lock the driving taper sleeve (23) and the clamping flange A (14).

10. The single-shaft drive roll removable three-high mill according to claim 8, characterized in that: the end part of the short tension pull rod (31) is provided with a fixed taper sleeve (29), the fixed taper sleeve (29) is sleeved on the clamping flange C (26) and rotates coaxially with the clamping flange C (26), and a locking part B is further arranged on the short tension pull rod (31) to lock the fixed taper sleeve (29) and the clamping flange C (26).