Device for supporting connection pin of winding roller oil cylinder

Abstract

The utility model relates to the technical field of oil cylinders, and provides a device for supporting a winding roller oil cylinder connecting pin, which comprises a lower positioning seat, a lower pin and a lower clamping plate, the oil cylinder comprises a cylinder body and a lower connecting lug ring, the lower connecting lug ring is arranged at the bottom of the cylinder body, the upper end face of the lower positioning seat is provided with a lower mounting groove, and the lower connecting lug ring is inserted into the lower mounting groove; the lower pin is arranged on the lower connecting lug ring, a lower containing groove is formed in the upper end face of the lower positioning seat, one end of the lower containing groove is communicated with the lower mounting groove, the other end of the lower containing groove is flush with the side face of the lower positioning seat, lower containing grooves are formed in the two sides of the lower mounting groove, and the lower pin is connected with the lower containing grooves in an inserted mode. Lower clamping plates are detachably arranged on the two sides of the lower positioning base and located between the lower pin and the cylinder body, and the lower pin is clamped between the lower clamping plates and the lower containing groove. By means of the technical scheme, the problems that in the prior art, when the oil cylinder is replaced, the lower pin arranged at the bottom of the oil cylinder is difficult to disassemble, and the operation progress is affected are solved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil cylinders, and in particular to a device for connecting a roll roller oil cylinder with a column pin. Background Art

[0002] At present, on the strip steel production line in the metallurgical industry, the hot coil box is a key equipment installed between the roughing and finishing mills of the hot rolling strip steel production line. Its function is to reduce the temperature difference between the head and tail of the intermediate billet, reduce the temperature drop rate of the intermediate billet, and realize isothermal constant speed rolling of the finishing rolling mill. During the production process, the strip steel needs to stay in the hot coil box to form a coreless coil, and the coil support rollers in the hot coil box need to be adjusted in height during the coiling process. The height adjustment of the coil support roller is now controlled by the oil cylinder, which is vertically installed under the two sides of the roller. Due to the high temperature on site and the impact of the cooling water of each roller and the transmission of the coiled steel, the oil cylinder seal is easily damaged and leaks. When replacing the oil cylinder, the lower column pin set at the bottom of the oil cylinder is difficult to disassemble, affecting the progress of the operation. Utility Model Content

[0003] The utility model provides a device for connecting a support roller oil cylinder with a column pin, which solves the problem in the related art that when replacing the oil cylinder, a lower column pin arranged at the bottom of the oil cylinder is difficult to disassemble, thus affecting the operation progress.

[0004] The technical solution of the utility model is as follows: a device for connecting a support roller cylinder with a pin, the key is: comprising:

[0005] The lower positioning seat, the oil cylinder comprises a cylinder body and a lower connecting earring, the lower connecting earring is arranged at the bottom of the cylinder body, a lower mounting groove is opened on the upper end surface of the lower positioning seat, and the lower connecting earring is inserted into the lower mounting groove;

[0006] A lower column pin, the lower column pin is arranged on the lower connecting earring, a lower receiving groove is opened on the upper end surface of the lower positioning seat, one end of the lower receiving groove is communicated with the lower mounting groove, the other end of the lower receiving groove is flush with the side surface of the lower positioning seat, the lower receiving grooves are arranged on both sides of the lower mounting groove, and the lower column pin is plugged into the lower receiving groove;

[0007] A lower clamping plate is detachably provided on both sides of the lower positioning seat, the lower clamping plate is located between the lower column pin and the cylinder body, and the lower column pin is clamped between the lower clamping plate and the lower receiving groove.

[0008] A lower arc-shaped groove is provided on the end surface of the lower clamping plate facing the lower column pin, and the lower column pin is clamped with the lower arc-shaped groove.

[0009] The central angle of the lower arc-shaped groove is less than or equal to 180°.

[0010] It also includes a lower locking bolt, which has a screw and a nut. The screw of the lower locking bolt passes through the lower clamping plate and is threadedly connected to the lower positioning seat. The lower clamping plate is clamped between the nut of the lower locking bolt and the lower positioning seat.

[0011] It also includes a lower bearing, which is arranged between the lower column pin and the lower connecting earring, and the lower bearing is coaxially arranged with the lower column pin.

[0012] Also includes,

[0013] A support seat, on which the end of the support roller is rotatably arranged;

[0014] An upper positioning seat, the upper positioning seat is arranged on the support seat and is located on a side of the support seat away from the roll-supporting roller, the oil cylinder also includes an upper connecting earring, the upper connecting earring is arranged on the top of the cylinder body, an upper mounting groove is opened on the lower end surface of the upper positioning seat, and the upper connecting earring is inserted into the upper mounting groove;

[0015] An upper column pin, the upper column pin is arranged on the upper connecting earring, an upper receiving groove is opened on the lower end surface of the upper positioning seat, one end of the upper receiving groove is connected with the upper mounting groove, the other end of the upper receiving groove is flush with the side surface of the upper positioning seat, and the upper column pin is plugged into the upper receiving groove;

[0016] An upper clamping plate is detachably provided on a side of the upper positioning seat away from the support seat, the upper clamping plate is located between the upper column pin and the cylinder body, one end of the upper column pin is clamped between the upper clamping plate and the upper receiving groove, and the other end of the upper column pin is in contact with the support seat.

[0017] An upper arc-shaped groove is provided on the end surface of the upper clamping plate facing the upper column pin, and the upper column pin is clamped with the upper arc-shaped groove.

[0018] It also includes an upper locking bolt, which has a screw rod and a nut. The screw rod of the upper locking bolt passes through the upper clamping plate and is threadedly connected to the upper positioning seat. The upper clamping plate is clamped between the nut of the upper locking bolt and the upper positioning seat.

[0019] It also includes an upper bearing, which is arranged between the upper column pin and the upper connecting earring, and the upper bearing is coaxially arranged with the upper column pin.

[0020] It also includes a protective cover, which is located between the cylinder body and the lower positioning seat and outside the lower connecting earring. The protective cover is tilted downward at one end away from the lower connecting earring and extends to the periphery of the lower positioning seat. The outer wall of the upper end of the protective cover is located on the inner side of the outer wall of the lower end of the cylinder body, and the protective cover and the lower connecting earring are detachably connected.

[0021] The working principle and beneficial effects of the utility model are as follows: the oil cylinder comprises a cylinder body and a lower connecting earring, the lower connecting earring is arranged at the bottom of the cylinder body, a lower mounting groove is provided on the upper end surface of the lower positioning seat, and the lower connecting earring is inserted into the lower mounting groove; the lower column pin is arranged on the lower connecting earring, a lower receiving groove is provided on the upper end surface of the lower positioning seat, one end of the lower receiving groove is communicated with the lower mounting groove, and the other end of the lower receiving groove is flush with the side surface of the lower positioning seat, and lower receiving grooves are provided on both sides of the lower mounting groove, and the lower column pin is plugged into the lower receiving groove; lower clamping plates are detachably provided on both sides of the lower positioning seat, the lower clamping plates are located between the lower column pin and the cylinder body, and the lower column pin is clamped between the lower clamping plates and the lower receiving groove. During installation, the lower connecting earring is inserted into the lower mounting groove from top to bottom, and the lower column pin will be inserted into the lower receiving groove, and then the lower clamping plates are installed on both sides of the lower positioning seat, and the lower end surface of the lower clamping plates is made to contact with the lower column pin, so that the lower column pin is clamped between the lower clamping plates and the lower receiving groove. When disassembling, remove the lower card plates on both sides from the lower positioning seat, and then move the lower connecting earrings upward, so that the lower connecting earrings and the lower column pins are separated from the lower positioning seat. The structure is simple, the disassembly and assembly are simple and convenient, saving time and labor, and can improve the progress of the work. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0023] Figure 1 It is the main view of the utility model when it is used.

[0024] Figure 2 It is a left side view of the utility model during specific use.

[0025] Figure 3 for Figure 1 A is an enlarged view of the middle image.

[0026] Figure 4 for Figure 1 Enlarged view of B.

[0027] Figure 5 It is a top view of the lower positioning seat in the utility model.

[0028] Figure 6 It is a left view of the lower card plate in the utility model.

[0029] Figure 7 It is a bottom view of the upper positioning seat in the utility model.

[0030] Figure 8 It is a left view of the upper clamping plate in the utility model.

[0031] Fig. 9 It is a schematic diagram of the connection structure between the protective cover and the lower connecting earring in the utility model.

[0032] In the figure: 1, lower positioning seat, 2, lower column pin, 3, lower clamping plate, 4, lower mounting groove, 5, lower receiving groove, 6, lower arc groove, 7, lower locking bolt, 8, lower bearing, 9, support seat, 10, upper positioning seat, 11, upper column pin, 12, upper clamping plate, 13, upper mounting groove, 14, upper receiving groove, 15, upper arc groove, 16, upper locking bolt, 17, upper bearing, 18, protective cover, 19, cylinder body, 20, lower connecting earring, 21, upper connecting earring, 22, winding roller. DETAILED DESCRIPTION

[0033] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0034] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0035] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0036] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0037] Example, see Figure 1 , Figure 2 , Figure 3 and Figure 5 , is an embodiment of the utility model, and proposes a device for connecting a column pin of a roll roller cylinder, comprising a lower positioning seat 1, a lower column pin 2, a lower clamping plate 3, the cylinder comprising a cylinder body 19 and a lower connecting earring 20, the lower connecting earring 20 is arranged at the bottom of the cylinder body 19, a lower mounting groove 4 is opened on the upper end surface of the lower positioning seat 1, and the lower connecting earring 20 is inserted into the lower mounting groove 4; the lower column pin 2 is arranged on the lower connecting earring 20, a lower accommodating groove 5 is opened on the upper end surface of the lower positioning seat 1, one end of the lower accommodating groove 5 is communicated with the lower mounting groove 4, and the other end of the lower accommodating groove 5 is flush with the side surface of the lower positioning seat 1, lower accommodating grooves 5 are arranged on both sides of the lower mounting groove 4, and the lower column pin 2 is plugged into the lower accommodating groove 5; lower clamping plates 3 are detachably arranged on both sides of the lower positioning seat 1, the lower clamping plates 3 are located between the lower column pin 2 and the cylinder body 19, and the lower column pin 2 is clamped between the lower clamping plate 3 and the lower accommodating groove 5.

[0038] Furthermore, if Figure 2 and Figure 6 As shown, a lower arc groove 6 is provided on the end surface of the lower clamping plate 3 facing the lower column pin 2, and the lower column pin 2 is clamped with the lower arc groove 6. The lower arc groove 6 can increase the contact area between the lower clamping plate 3 and the lower column pin 2, and the pressing effect is better.

[0039] Furthermore, if Figure 2 and Figure 6 As shown, the central angle of the lower arc groove 6 is less than or equal to 180°. After the lower clamping plate 3 is separated from the lower positioning seat 1, the lower clamping plate 3 can be separated from the lower column pin 2 by directly moving the lower clamping plate 3 upwards without moving the lower clamping plate 3 along the axial direction of the lower column pin 2, which makes the operation simpler and more convenient.

[0040] Furthermore, if Figure 1 , Figure 2 and Figure 3 As shown, the lower locking bolt 7 is also included. The lower locking bolt 7 has a screw and a nut. The screw of the lower locking bolt 7 passes through the lower clamping plate 3 and is threadedly connected to the lower positioning seat 1. The lower clamping plate 3 is clamped between the nut of the lower locking bolt 7 and the lower positioning seat 1. The lower clamping plate 3 is locked on the lower positioning seat 1 by the lower locking bolt 7. The connection is firm and reliable, and the disassembly and assembly are convenient and fast, saving time and effort. The number of the lower locking bolts 7 is at least two, and all the lower locking bolts 7 are arranged along the length direction of the lower clamping plate 3.

[0041] Furthermore, if Figure 1 , Figure 2 and Figure 3As shown, it also includes a lower bearing 8, which is arranged between the lower column pin 2 and the lower connecting earring 20, and the lower bearing 8 is coaxially arranged with the lower column pin 2. The lower bearing 8 can be used to avoid the lower connecting earring 20 directly contacting the lower column pin 2 and causing friction between them.

[0042] Furthermore, if Figure 1 , Figure 2 , Figure 4 and Figure 7 As shown, it also includes a support seat 9, an upper positioning seat 10, an upper column pin 11, an upper clamping plate 12, and the end of the winding roller 22 is rotatably arranged on the support seat 9; the upper positioning seat 10 is arranged on the support seat 9 and is located on the side of the support seat 9 away from the winding roller 22. The oil cylinder also includes an upper connecting earring 21, which is arranged on the top of the cylinder body 19, and an upper mounting groove 13 is opened on the lower end surface of the upper positioning seat 10, and the upper connecting earring 21 is inserted into the upper mounting groove 13; the upper column pin 11 is arranged on the upper connecting earring 21, An upper accommodating groove 14 is provided on the lower end surface of the upper positioning seat 10, one end of the upper accommodating groove 14 is connected to the upper mounting groove 13, the other end of the upper accommodating groove 14 is flush with the side of the upper positioning seat 10, and the upper column pin 11 is plugged into the upper accommodating groove 14; an upper clamping plate 12 is detachably provided on the side of the upper positioning seat 10 away from the support seat 9, the upper clamping plate 12 is located between the upper column pin 11 and the cylinder body 19, one end of the upper column pin 11 is clamped between the upper clamping plate 12 and the upper accommodating groove 14, and the other end of the upper column pin 11 is in contact with the support seat 9.

[0043] The support roller 22 is rotatably arranged on the left and right support seats 9. For example, the right end of the upper positioning seat 10 contacts the support seat 9. When installing, the upper connecting earring 21 is inserted into the upper installation groove 13 from bottom to top, and the upper column pin 11 is inserted into the upper receiving groove 14. Then, the upper card plate 12 is installed on the left side of the upper positioning seat 10, and the upper end surface of the upper card plate 12 is in contact with the upper column pin 11, so that the upper column pin 11 is clamped between the upper card plate 12 and the upper receiving groove 14. When disassembling, the upper card plate 12 on the left side is removed from the upper positioning seat 10, and then the upper connecting earring 21 is moved down, so that the upper connecting earring 21 and the upper column pin 11 are separated from the upper positioning seat 10. The structure is simple, the disassembly and assembly are simple and convenient, time and labor are saved, and the work progress can be improved.

[0044] Furthermore, if Figure 2 , Figure 4 and Figure 8As shown, an upper arc groove 15 is provided on the end surface of the upper clamping plate 12 facing the upper column pin 11, and the upper column pin 11 is clamped with the upper arc groove 15. The upper arc groove 15 can increase the contact area between the upper clamping plate 12 and the upper column pin 11, and the clamping effect is better. The center angle of the upper arc groove 15 is less than or equal to 180°. After the upper clamping plate 12 is separated from the upper positioning seat 10, the upper clamping plate 12 can be separated from the upper column pin 11 by directly moving the upper clamping plate 12 downward, without moving the upper clamping plate 12 along the axial direction of the upper column pin 11, which makes the operation simpler and more convenient.

[0045] Furthermore, if Figure 1 , Figure 2 and Figure 4 As shown, it also includes an upper locking bolt 16, which has a screw and a nut. The screw of the upper locking bolt 16 passes through the upper clamping plate 12 and is threadedly connected to the upper positioning seat 10. The upper clamping plate 12 is clamped between the nut of the upper locking bolt 16 and the upper positioning seat 10. The upper clamping plate 12 is locked on the upper positioning seat 10 by the upper locking bolt 16, and the connection is firm and reliable, and the disassembly and assembly are convenient and fast, saving time and labor. The number of the upper locking bolts 16 is at least two, and all the upper locking bolts 16 are arranged along the length direction of the upper clamping plate 12.

[0046] Furthermore, if Figure 1 , Figure 2 and Figure 4 As shown, an upper bearing 17 is also included, and the upper bearing 17 is arranged between the upper column pin 11 and the upper connecting earring 21, and the upper bearing 17 is coaxially arranged with the upper column pin 11. The upper bearing 17 can be used to avoid the upper connecting earring 21 directly contacting the upper column pin 11 and causing friction between them.

[0047] Furthermore, if Fig. 9 As shown, it also includes a protective cover 18, which is located between the cylinder body 19 and the lower positioning seat 1 and is located outside the lower connecting earring 20. The end of the protective cover 18 away from the lower connecting earring 20 is tilted downward and extends to the periphery of the lower positioning seat 1. The outer wall of the upper end of the protective cover 18 is located on the inner side of the outer wall of the lower end of the cylinder body 19. The protective cover 18 and the lower connecting earring 20 are detachably connected. The lower positioning seat 1, the lower column pin 2 and the lower card plate 3 are all hidden under the protective cover 18, which can prevent the oil leaked from the damaged oil cylinder from dripping onto the lower positioning seat 1, the lower column pin 2 and the lower card plate 3. When replacing the oil cylinder, the protective cover 18 can be removed, so that the lower positioning seat 1, the lower column pin 2 and the lower card plate 3 are cleaner, and it is more time-saving and labor-saving when disassembling and replacing the oil cylinder.

[0048] In this embodiment, the roll support roller 22 is rotatably arranged on the left and right support seats 9, the lower connecting earring 20 is arranged at the bottom of the cylinder body 19, and the upper connecting earring 21 is arranged at the top of the cylinder body 19. The lower mounting groove 4 and the left and right lower receiving grooves 5 are provided on the upper end surface of the lower positioning seat 1. The lower mounting groove 4 is located between the left and right lower receiving grooves 5. The length of the lower mounting groove 4 along the front-to-back direction is greater than the length of the lower receiving groove 5 along the front-to-back direction. The upper mounting groove 13 and the left and right upper receiving grooves 14 are provided on the lower end surface of the upper positioning seat 10. The upper mounting groove 13 is located between the left and right upper receiving grooves 14. The length of the upper mounting groove 13 along the front-to-back direction is greater than the length of the upper receiving groove 14 along the front-to-back direction.

[0049] During installation, the lower connecting earring 20 is inserted into the lower mounting groove 4 from top to bottom, and the lower column pin 2 will be inserted into the lower receiving groove 5, and then the lower card plate 3 is installed on the left and right sides of the lower positioning seat 1, and the lower card plate 3 and the lower positioning seat 1 are locked together by the lower locking bolt 7, and the lower arc groove 6 of the lower card plate 3 is contacted and clamped with the lower column pin 2, so that the lower column pin 2 is clamped between the lower card plate 3 and the lower receiving groove 5. The upper connecting earring 21 is inserted into the upper mounting groove 13 from bottom to top, and the upper column pin 11 is inserted into the upper receiving groove 14, and then the upper card plate 12 is installed on the left side of the upper positioning seat 10, and the upper locking bolt 16 is used to lock the upper card plate 12 and the upper positioning seat 10 together, and the upper arc groove 15 of the upper card plate 12 is contacted and clamped with the upper column pin 11, so that the upper column pin 11 is clamped between the upper card plate 12 and the upper receiving groove 14.

[0050] When disassembling, the lower locking bolt 7 and the lower clamping plate 3 are disassembled from the lower positioning seat 1, the upper locking bolt 16 and the upper clamping plate 12 are disassembled from the upper positioning seat 10, the lower connecting earring 20 is moved upward, so that the lower connecting earring 20 and the lower column pin 2 are separated from the lower positioning seat 1, and the upper connecting earring 21 is moved downward, so that the upper connecting earring 21 and the upper column pin 11 are separated from the upper positioning seat 10. The structure is simple, the disassembly and assembly are simple and convenient, time and labor are saved, and the operation progress can be improved.

[0051] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A device for connecting a support roller cylinder to a pin, characterized in that: include, A lower positioning seat (1), the oil cylinder comprising a cylinder body (19) and a lower connecting earring (20), the lower connecting earring (20) being arranged at the bottom of the cylinder body (19), a lower mounting groove (4) being formed on the upper end surface of the lower positioning seat (1), and the lower connecting earring (20) being inserted into the lower mounting groove (4); A lower column pin (2), the lower column pin (2) being arranged on the lower connecting earring (20), a lower receiving groove (5) being provided on the upper end surface of the lower positioning seat (1), one end of the lower receiving groove (5) being communicated with the lower mounting groove (4), the other end of the lower receiving groove (5) being flush with the side surface of the lower positioning seat (1), the lower receiving grooves (5) being provided on both sides of the lower mounting groove (4), and the lower column pin (2) being plugged into the lower receiving groove (5); A lower clamping plate (3) is detachably provided on both sides of the lower positioning seat (1), the lower clamping plate (3) is located between the lower column pin (2) and the cylinder body (19), and the lower column pin (2) is clamped between the lower clamping plate (3) and the lower receiving groove (5).

2. The device for connecting the support roller cylinder to the pin according to claim 1, characterized in that: A lower arc-shaped groove (6) is provided on the end surface of the lower clamping plate (3) facing the lower column pin (2), and the lower column pin (2) is clamped with the lower arc-shaped groove (6).

3. The device for connecting the support roller cylinder to the pin according to claim 2, characterized in that: The central angle of the lower arc-shaped groove (6) is less than or equal to 180°.

4. The device for connecting the support roller cylinder to the pin according to claim 1, characterized in that: It also includes a lower locking bolt (7), the lower locking bolt (7) having a screw rod and a nut, the screw rod of the lower locking bolt (7) passing through the lower clamping plate (3) and being threadedly connected to the lower positioning seat (1), and the lower clamping plate (3) being clamped between the nut of the lower locking bolt (7) and the lower positioning seat (1).

5. The device for connecting the support roller cylinder to the pin according to claim 1, characterized in that: It also comprises a lower bearing (8), wherein the lower bearing (8) is arranged between the lower column pin (2) and the lower connecting earring (20), and the lower bearing (8) is coaxially arranged with the lower column pin (2).

6. The device for connecting the support roller cylinder to the pin according to claim 1, characterized in that: Also includes, A support seat (9), on which the end of the support roller (22) is rotatably disposed; an upper positioning seat (10), the upper positioning seat (10) being arranged on the support seat (9) and being located on a side of the support seat (9) away from the winding roller (22), the oil cylinder further comprising an upper connecting earring (21), the upper connecting earring (21) being arranged on the top of the cylinder body (19), an upper mounting groove (13) being formed on the lower end surface of the upper positioning seat (10), the upper connecting earring (21) being inserted into the upper mounting groove (13); An upper column pin (11), the upper column pin (11) being arranged on the upper connecting earring (21), an upper receiving groove (14) being provided on the lower end surface of the upper positioning seat (10), one end of the upper receiving groove (14) being communicated with the upper mounting groove (13), the other end of the upper receiving groove (14) being flush with the side surface of the upper positioning seat (10), and the upper column pin (11) being plugged into the upper receiving groove (14); An upper clamping plate (12) is detachably provided on a side of the upper positioning seat (10) away from the support seat (9), the upper clamping plate (12) is located between the upper column pin (11) and the cylinder body (19), one end of the upper column pin (11) is clamped between the upper clamping plate (12) and the upper receiving groove (14), and the other end of the upper column pin (11) is in contact with the support seat (9).

7. The device for connecting the support roller cylinder to the pin according to claim 6, characterized in that: An upper arc-shaped groove (15) is provided on the end surface of the upper clamping plate (12) facing the upper column pin (11), and the upper column pin (11) is clamped with the upper arc-shaped groove (15).

8. The device for connecting the support roller cylinder to the pin according to claim 6, characterized in that: It also includes an upper locking bolt (16), the upper locking bolt (16) having a screw rod and a nut, the screw rod of the upper locking bolt (16) passing through the upper clamping plate (12) and being threadedly connected to the upper positioning seat (10), the upper clamping plate (12) being clamped between the nut of the upper locking bolt (16) and the upper positioning seat (10).

9. The device for connecting the support roller cylinder to the pin according to claim 6, characterized in that: It also includes an upper bearing (17), wherein the upper bearing (17) is arranged between the upper column pin (11) and the upper connecting earring (21), and the upper bearing (17) is coaxially arranged with the upper column pin (11).

10. The device for connecting the support roller cylinder to the pin according to claim 1, characterized in that: The protective cover (18) is located between the cylinder body (19) and the lower positioning seat (1) and is located outside the lower connecting earring (20). The end of the protective cover (18) away from the lower connecting earring (20) is tilted downward and extends to the outside of the lower positioning seat (1). The outer wall of the upper end of the protective cover (18) is located on the inner side of the outer wall of the lower end of the cylinder body (19). The protective cover (18) and the lower connecting earring (20) are detachably connected.

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