Manual clutch and annealing kiln
The annealing lehr main shaft is connected to the adjacent main shaft through a manual clutch, which solves the production problems caused by the unexpected stop of the main shaft, realizes the continuity and stability of the annealing lehr, and ensures the safety of glass production.
Patent Information
- Application Number
- CN202423241542.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-26
- Publication Date
- 2025-10-17
- Estimated Expiration
- 2034-12-26
AI Technical Summary
In the production of thin glass, an unexpected stop in the spindle of the annealing furnace can lead to production chaos, reduced product quality, or even production accidents, which is difficult to solve effectively with existing technologies.
A manual clutch is used to connect the stopped main shaft with the adjacent normally rotating main shaft. The stopped main shaft is driven to restart by the power of the normally rotating main shaft, and power transmission is achieved by switching the fixed clutch and the sliding clutch.
Ensure the continuity and stability of the annealing kiln production process, avoid production accidents, and ensure the stable and safe operation of thin glass production.
Smart Images
Figure CN223447505U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the annealing kiln field, especially a kind of manual clutch and annealing kiln. BACKGROUND
[0002] In the thin plate glass production field, in order to accurately and efficiently adapt to the production needs of thin plate glass, more and more annealing kilns abandon the traditional transmission mode, and instead begin to use more advanced, complex and highly adaptive multi-stage transmission mode. The main shafts between the transmission systems of each stage of this transmission mode are disconnected.
[0003] Since glass production is an industrial process with extremely high requirements for continuity and stability, the annealing kiln transmission system is operated continuously for 24 hours within a kiln period (more than 12 years). This means that if one of the main shafts stops rotating unexpectedly due to any reason within a kiln period, causing the rollers of the annealing kiln to stop rotating, it will cause production disorder, sharp decline in product quality, and even directly evolve into a major production accident. SUMMARY
[0004] The utility model aims at solving the technical problem of production accidents caused by the stop of the main shaft. The utility model provides a manual clutch and an annealing kiln, which can effectively connect the stopped main shaft with the adjacent normally rotating main shaft through the manual clutch, and drive the stopped main shaft to restart and restore normal rotation state with the help of the rotation power of the normally rotating main shaft.
[0005] To solve the above technical problems, the embodiment of the utility model discloses a manual clutch, which comprises:
[0006] A fixed part for connecting with the cross beam outside;
[0007] A driving part connected with the fixed part in a slidable manner along a first direction;
[0008] A fixed clutch with a hollow structure, which is used for connecting with the first main shaft outside and rotating synchronously with the first main shaft outside;
[0009] A sliding clutch with a hollow structure, which is used for connecting with the second main shaft outside in a slidable manner along the first direction and rotating synchronously with the second main shaft outside, and the driving part is connected with the sliding clutch to switch the manual clutch between a first state and a second state; wherein,
[0010] In the first state, the fixed clutch is connected with the sliding clutch to realize synchronous rotation of the first main shaft of the external world driving the second main shaft of the external world or the second main shaft of the external world driving the first main shaft of the external world.
[0011] In the second state, the fixed clutch is arranged in the first direction.
[0012] With the above technical scheme, when the first main shaft and the second main shaft of the annealing furnace are normally rotated, the manual clutch is in the second state, that is, the fixed clutch is arranged in the first direction, and the fixed clutch and the sliding clutch are in a separated state, and there is no power transmission between the fixed clutch and the sliding clutch.
[0013] Taking the first main shaft of the annealing furnace as an example, when the first main shaft stops rotating due to a fault and the second main shaft normally rotates, the worker drives the sliding clutch to slide in the first direction by the driving part until the sliding clutch is connected with the fixed clutch, that is, the manual clutch is in the first state. Since the sliding clutch is synchronously rotated with the second main shaft, the rotating power of the second main shaft can be transmitted to the fixed clutch connected therewith through the sliding clutch. Since the fixed clutch is synchronously rotated with the first main shaft, the rotating power of the first main shaft can be transmitted to the sliding clutch connected therewith through the fixed clutch. Thus, the first main shaft which has stopped rotating can be restarted to rotate through the complete power transmission path. In this way, a series of production accidents caused by the unexpected stop of the first main shaft can be avoided, and the continuity and stability of the production process of the annealing furnace can be ensured.
[0014] Similarly, if the second main shaft of the annealing furnace stops rotating due to a fault and the first main shaft normally rotates, the worker drives the sliding clutch to slide in the first direction by the driving part until the sliding clutch is connected with the fixed clutch, that is, the manual clutch is in the first state. Since the fixed clutch is synchronously rotated with the first main shaft, the rotating power of the first main shaft can be transmitted to the sliding clutch connected therewith through the fixed clutch. Since the sliding clutch is synchronously rotated with the second main shaft, the rotating power of the second main shaft can be transmitted to the fixed clutch connected therewith through the sliding clutch. Thus, the second main shaft which has stopped rotating can be restarted to rotate through the complete power transmission path. In this way, a series of production accidents caused by the unexpected stop of the second main shaft can be avoided, and the continuity and stability of the production process of the annealing furnace can be ensured.
[0015] In summary, through the cooperation between the manual clutch and the main shaft of the annealing furnace, no matter which main shaft of the annealing furnace stops rotating in the running process, the main shaft can be effectively connected with the adjacent normally rotating main shaft through the manual clutch. Then, the rotating power of the normally rotating main shaft can be used to restart the stopped main shaft and restore the normal rotating state, so that the production accidents caused by the unexpected stop of the main shaft can be avoided, and the stable and safe operation of the thin plate glass production can be ensured.
[0016] According to another specific embodiment of the present invention, along the first direction, one end of the fixed clutch includes one or more first concave portions spaced apart along the circumferential direction, and along the first direction, one end of the sliding clutch includes one or more first convex portions spaced apart along the circumferential direction; wherein,
[0017] In the first state, the first concave portion is in concave-convex engagement with the corresponding first convex portion;
[0018] In the second state, the first concave portion and the first convex portion are spaced apart from each other along the first direction.
[0019] According to another specific embodiment of the present invention, the fixing portion includes:
[0020] a first fixing member, the first fixing member being used to connect to an external beam;
[0021] a second fixing member, arranged along the first direction, the second fixing member being spaced apart from the first fixing member, and the second fixing member being used to connect to an external beam;
[0022] The guide member has two ends connected to the first fixing member and the second fixing member respectively along the first direction, and the driving part is connected to the guide member in a slidable manner along the first direction.
[0023] According to another specific embodiment of the present invention, the driving unit includes:
[0024] a sliding member, the sliding member including a first through hole, the guide member passing through the first through hole, the sliding member being slidably connected to the guide member in a manner slidable along the first direction, and the sliding member being connected to the sliding clutch;
[0025] A driving member is connected to the sliding member and is used to be operated to drive the sliding member to slide.
[0026] According to another specific embodiment of the present invention, the sliding member is a hollow structure, the sliding clutch passes through the sliding member, the sliding member and the sliding clutch are matched in a concave-convex manner, and the sliding clutch can rotate axially relative to the sliding member around the first direction.
[0027] By adopting the above technical solution, the sliding clutch can rotate axially relative to the sliding member around the first direction, which satisfies the requirement that the sliding member drives the sliding clutch to slide along the first direction while also meeting the requirement that the sliding clutch and the second main shaft rotate synchronously.
[0028] According to another specific embodiment of the present application, the sliding piece comprises a first groove, the sliding clutch comprises a first outer wall and a second protrusion, the second protrusion is arranged on the first outer wall, the second protrusion is arranged in the first groove in a corresponding manner, and the second protrusion can rotate relative to the first groove around the first direction as an axis.
[0029] According to another specific embodiment of the present application, the fixed clutch comprises a second through hole and a second groove, the second groove extends along an axial direction, and the second groove is used for connecting with a first main shaft in the external environment.
[0030] According to another specific embodiment of the present application, the sliding clutch comprises a first sliding groove, the first sliding groove extends along an axial direction, and the first sliding groove is used for slidingly connecting with a second main shaft in the external environment, so that the sliding clutch can slide along the first direction and rotate synchronously with the second main shaft in the external environment.
[0031] The embodiment of the present application further discloses an annealing furnace, which comprises:
[0032] The manual clutch in any one of the preceding aspects;
[0033] A cross beam, which is connected with the fixed part;
[0034] A first main shaft, one end of the first main shaft is connected with the fixed clutch, and the fixed clutch rotates synchronously with the first main shaft.
[0035] A second main shaft, the sliding clutch is connected with one end of the second main shaft in a slidable manner along the first direction, and the sliding clutch rotates synchronously with the second main shaft.
[0036] According to another specific embodiment of the present application, the first main shaft comprises a third groove, a key and a connecting piece, one end of the connecting piece is connected with the key, the key is arranged in the third groove and protrudes from the first main shaft, the second groove of the fixed clutch is matched with the key, and the connecting piece is arranged in the second through hole of the fixed clutch, so that the fixed clutch is fastened on the first main shaft.
[0037] The second main shaft comprises a fourth groove and a sliding key, the sliding key is arranged in the fourth groove and protrudes from the second main shaft, the first sliding groove of the sliding clutch is matched with the sliding key, so that the sliding clutch can slide along the first direction and rotate synchronously with the second main shaft. BRIEF DESCRIPTION OF DRAWINGS
[0038] Figure 1A connection schematic view of the manual clutch, the cross beam, the first main shaft and the second main shaft is shown.
[0039] Figure 2 A sectional view of the manual clutch, the cross beam, the first main shaft and the second main shaft is shown.
[0040] Figure 3 A schematic view of the manual clutch in the first state is shown.
[0041] Figure 4 A schematic view of the manual clutch in the second state is shown.
[0042] Marked legend
[0043] The manual clutch 100;
[0044] The fixed part 110;
[0045] The first fixing piece 111; the second fixing piece 112; the guide piece 113;
[0046] The driving part 120;
[0047] The sliding piece 121; the first through hole 1211; the first recess 1212;
[0048] The driving piece 122;
[0049] The fixed clutch 130;
[0050] The first recess 131; the second through hole 132; the second recess 133;
[0051] The sliding clutch 140;
[0052] The first protruding part 141; the first outer wall 142; the second protruding part 143; the first sliding groove 144;
[0053] The cross beam 200;
[0054] The first main shaft 300; the third recess 310; the key 320; the connecting piece 330;
[0055] The second main shaft 400; the fourth recess 410; the sliding key 420. DETAILED DESCRIPTION
[0056] The following describes the embodiments of the present application with specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the disclosure. Although the description of the present application will be introduced in combination with the preferred embodiments, it does not mean that the features of the present application are limited to the embodiments. On the contrary, the purpose of introducing the present application in combination with the embodiments is to cover other options or modifications that can be extended based on the claims of the present application. In order to provide a deep understanding of the present application, many specific details will be included in the following description. The present application can also be implemented without using these details. In addition, in order to avoid confusion or obscure the focus of the present application, some specific details will be omitted in the description. It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.
[0057] It should be noted that in the present specification, similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.
[0058] In the description of the present embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.
[0059] The terms "first", "second", and the like are only used for differentiation and cannot be understood as indicating or implying relative importance.
[0060] In the description of the present embodiment, it should also be noted that unless otherwise explicitly specified and limited, the terms "provided", "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present embodiment can be understood according to the specific circumstances.
[0061] In order to make the purpose, technical scheme and advantages of the present application more clear, the embodiments of the present application will be further described in detail below with reference to the drawings.
[0062] Reference Figures 1 to 4An embodiment of the present application provides an annealing lehr, which includes a manual clutch 100 , a beam 200 , a first main shaft 300 , and a second main shaft 400 .
[0063] The manual clutch 100 includes a fixing portion 110, a driving portion 120, a fixing clutch 130, and a sliding clutch 140. The fixing portion 110 is connected to the crossbeam 200. The driving portion 120 is connected to the fixing portion 110 in a slidable manner along a first direction X.
[0064] The fixed clutch 130 is a hollow structure connected to one end of the first main shaft 300 and rotates synchronously with the first main shaft 300. The sliding clutch 140 is a hollow structure connected to the second main shaft 400 so as to be slidable in the first direction X and rotates synchronously with the second main shaft 400. The driving unit 120 is connected to the sliding clutch 140 to switch the manual clutch 100 between the first state and the second state.
[0065] like Figure 3 As shown, in the first state, the fixed clutch 130 is connected to the sliding clutch 140 to achieve the first main shaft 300 driving the second main shaft 400 to rotate synchronously, or the second main shaft 400 driving the first main shaft 300 to rotate synchronously.
[0066] like Figure 4 As shown, in the second state, along the first direction X, the fixed clutch 130 and the sliding clutch 140 are spaced apart.
[0067] With the above technical solution, when the first main shaft 300 and the second main shaft 400 of the annealing furnace are rotating normally, the manual clutch 100 is in the second state, that is, the fixed clutch 130 and the sliding clutch 140 are spaced apart and are in a separated state, and there is no power transmission between the fixed clutch 130 and the sliding clutch 140.
[0068] For example, in an annealing lehr, if the first main shaft 300 malfunctions and stops rotating, while the second main shaft 400 rotates normally, the operator drives the sliding clutch 140 via the drive unit 120 to slide in the first direction X until the sliding clutch 140 connects with the fixed clutch 130. At this point, the manual clutch 100 is in the first state. Because the sliding clutch 140 rotates synchronously with the second main shaft 400, the rotational power of the second main shaft 400 can be transmitted to the connected fixed clutch 130 through the sliding clutch 140. The fixed clutch 130, in turn, rotates synchronously with the first main shaft 300. This complete power transmission path allows the first main shaft 300, which had previously stopped, to resume rotation. This prevents a series of production accidents caused by the unexpected stoppage of the first main shaft 300, ensuring the continuity and stability of the entire annealing lehr production process.
[0069] Likewise, if the second main shaft 400 of the annealing furnace stops rotating due to a failure, and the first main shaft 300 rotates normally, the staff drives the sliding clutch 140 to slide along the first direction X until the sliding clutch 140 is connected with the fixed clutch 130 by driving the driving part 120, that is, the manual clutch 100 is in the first state at this time. Since the fixed clutch 130 rotates synchronously with the first main shaft 300, the rotating power of the first main shaft 300 can be transmitted to the sliding clutch 140 connected therewith through the fixed clutch 130. The sliding clutch 140 rotates synchronously with the second main shaft 400, so that the second main shaft 400 which has stopped rotating can be driven to rotate again through the complete power transmission path. In this way, a series of production accidents caused by the accidental stop of the second main shaft 400 can be avoided, and the continuity and stability of the entire annealing furnace production process can be ensured.
[0070] In summary, through the cooperation between the manual clutch 100 and the main shaft of the annealing furnace, no matter which main shaft of the annealing furnace stops rotating abnormally during operation, the manual clutch 100 can quickly and effectively connect it with the adjacent main shaft rotating normally. Then, the rotating power of the normally rotating main shaft can be used to drive the stopped main shaft to restart and restore the normal rotating state, so as to avoid production accidents caused by the accidental stop of the main shaft, and to provide protection for the stable and safe operation of the thin plate glass production.
[0071] In some possible embodiments, with reference to Figure 1 、 Figure 3 and Figure 4 , one end of the fixed clutch 130 includes two first recesses 131 spaced apart along the circumferential direction R along the first direction X. One end of the sliding clutch 140 includes two first protrusions 141 spaced apart along the circumferential direction R along the first direction X.
[0072] In the first state, the first recess 131 is in a concave-convex cooperation with the corresponding first protrusion 141. In the second state, the first recess 131 is spaced apart from the first protrusion 141 along the first direction X.
[0073] It should be noted that the cooperation mode of the fixed clutch 130 and the sliding clutch 140 is not specifically limited in the embodiments of the present application. For example, in other possible embodiments, the fixed clutch 130 can include one or more protrusions, and the sliding clutch 140 can include one or more recesses.
[0074] It should be noted that the number of the first recesses 131 is not limited in the embodiments of the present application, for example, in other possible embodiments, the number of the first recesses 131 can be one, three, four, etc.
[0075] In some possible embodiments, referring to Figure 1 The fixing part 110 includes a first fixing member 111, a second fixing member 112, and two guide members 113. The first fixing member 111 is connected with the crossbeam 200. The second fixing member 112 is spaced apart from the first fixing member 111 along the first direction X and is connected with the crossbeam 200. The guide member 113 is a cylinder. The two ends of the guide member 113 are connected with the first fixing member 111 and the second fixing member 112 respectively along the first direction X. The driving part 120 is connected with the guide member 113 in a slidable manner along the first direction X.
[0076] It should be noted that the number of the guide members 113 is not limited in the embodiments of the present application, for example, in other possible embodiments, the number of the guide members 113 can be three, four, etc. The shape of the guide member 113 is not limited in the embodiments of the present application, for example, in other possible embodiments, the shape of the guide member 113 can be a cuboid, a triangular prism, etc.
[0077] In some possible embodiments, referring to Figure 1 The driving part 120 includes a sliding member 121 and a driving member 122. The driving member 122 is a handle. The sliding member 121 includes two circular first through holes 1211. Each guide member 113 passes through a corresponding first through hole 1211. The sliding member 121 is connected with the guide member 113 in a slidable manner along the first direction X and is connected with the sliding clutch 140. The driving member 122 is connected with the sliding member 121 and is used to be operated to drive the sliding member 121 to slide.
[0078] It should be noted that the number of the first through holes 1211 is not limited in the embodiments of the present application, for example, in other possible embodiments, the number of the first through holes 1211 can be three, four, etc. The shape of the first through hole 1211 is not limited in the embodiments of the present application, for example, in other possible embodiments, the shape of the first through hole 1211 can be a rectangle, a triangle, etc. The specific structure of the driving member 122 is not limited in the embodiments of the present application, for example, in other possible embodiments, the specific structure of the driving member 122 can be a bolt, a ring, etc.
[0079] In some possible embodiments, referring to Figure 1 The sliding member 121 is a hollow cuboid, the sliding clutch 140 passes through the sliding member 121, the sliding member 121 is in concave-convex cooperation with the sliding clutch 140, and the sliding clutch 140 can rotate relative to the sliding member 121 about the first direction X as an axis.
[0080] With the above technical solution, the sliding clutch 140 can rotate relative to the sliding member about the first direction X as an axis, so that the sliding member can drive the sliding clutch 140 to slide along the first direction X, and the sliding clutch 140 can also rotate synchronously with the second main shaft 400.
[0081] It should be noted that the shape of the sliding member 121 is not specifically limited in the embodiments of the present application, for example, in other possible embodiments, the shape of the sliding member 121 can be a cylindrical body, a hexagonal body, or the like.
[0082] In some possible embodiments, referring to Figure 1 and Figure 2 The sliding member 121 includes two first grooves 1212 spaced apart along the second direction Y, and the sliding clutch 140 includes a first outer wall 142 and a second protrusion 143 arranged circumferentially along the first outer wall 142, and the second direction Y is perpendicular to the first direction X. The second protrusion 143 is arranged on the first outer wall 142 and arranged in the first groove 1212, and the second protrusion 143 can rotate relative to the first groove 1212 about the first direction X as an axis.
[0083] It should be noted that the number of the first grooves 1212 is not specifically limited in the embodiments of the present application, for example, in other possible embodiments, the number of the first grooves 1212 can be one, three, four, or the like.
[0084] In some possible embodiments, referring to Figure 1 and Figure 2 The fixed clutch 130 includes a second through hole 132 and a second groove 133, and the second groove 133 extends along the axis direction (i.e., the first direction X). The first main shaft 300 includes a third groove 310, a key 320, and a connecting piece 330, one end of the connecting piece 330 is connected with the key 320, the key 320 is arranged in the third groove 310 and protrudes from the first main shaft 300. The second groove 133 of the fixed clutch 130 cooperates with the key 320, and the connecting piece 330 is arranged in the second through hole 132 of the fixed clutch 130, so as to fasten the fixed clutch 130 to the first main shaft 300.
[0085] In some possible embodiments, referring to Figure 1 and Figure 2The sliding clutch 140 includes a first sliding groove 144 extending in the axial direction (i.e., the first direction X). The second main shaft 400 includes a fourth groove 410 and a sliding key 420 disposed in the fourth groove 410 and protruding from the second main shaft 400. The first sliding groove 144 of the sliding clutch 140 cooperates with the sliding key 420 so that the sliding clutch 140 can slide in the first direction X and rotate synchronously with the second main shaft 400.
[0086] Although the present application has been illustrated and described with reference to certain preferred embodiments thereof, it should be understood that the above description is intended to be illustrative only and not limiting of the application. Changes can be made in form and detail, including the use of equivalents, without departing from the spirit of the application.
Claims
1. A manual clutch, characterized in that: The manual clutch comprises: A fixing portion, the fixing portion being used to connect to an external beam; a driving portion, the driving portion being connected to the fixing portion in a slidable manner along a first direction; A fixed clutch, which is a hollow structure and is used to connect to an external first main shaft and rotate synchronously with the external first main shaft; The sliding clutch is a hollow structure, and is used to be connected to an external second main shaft in a sliding manner along the first direction and rotate synchronously with the external second main shaft. The driving unit is connected to the sliding clutch to switch the manual clutch between the first state and the second state; wherein, In the first state, the fixed clutch is connected to the sliding clutch to achieve synchronous rotation of the external first main shaft driving the external second main shaft, or the external second main shaft driving the external first main shaft; In the second state, the fixed clutch and the sliding clutch are spaced apart along the first direction.
2. The manual clutch according to claim 1, characterized in that: Along the first direction, one end of the fixed clutch includes one or more first concave portions spaced apart along the circumferential direction, and along the first direction, one end of the sliding clutch includes one or more first convex portions spaced apart along the circumferential direction; wherein, In the first state, the first concave portion is in concave-convex engagement with the corresponding first convex portion; In the second state, the first concave portion and the first convex portion are spaced apart from each other along the first direction.
3. The manual clutch according to claim 1, wherein: The fixing portion includes: a first fixing member, the first fixing member being used to connect to an external beam; a second fixing member, arranged along the first direction, the second fixing member being spaced apart from the first fixing member, and the second fixing member being used to connect to an external beam; The guide member has two ends connected to the first fixing member and the second fixing member respectively along the first direction, and the driving part is connected to the guide member in a slidable manner along the first direction.
4. The manual clutch according to claim 1, wherein: The driving unit includes: a sliding member, the sliding member comprising a first through hole, the guide member passing through the first through hole, the sliding member being slidably connected to the guide member in a manner slidable along the first direction, and the sliding member being connected to the sliding clutch; A driving member is connected to the sliding member and is used to be operated to drive the sliding member to slide.
5. The manual clutch according to claim 4, characterized in that: The sliding member is a hollow structure, the sliding clutch passes through the sliding member, the sliding member and the sliding clutch are matched in a concave-convex manner, and the sliding clutch can rotate relative to the sliding member axially around the first direction.
6. The manual clutch according to claim 5, characterized in that: The sliding member includes a first groove, and the sliding clutch includes a first outer wall and a second convex portion. The second convex portion is arranged on the first outer wall, and the second convex portion is arranged corresponding to the first groove and is arranged in the first groove. The second convex portion can rotate axially relative to the first groove around the first direction.
7. The manual clutch according to claim 1, wherein: The fixed clutch includes a second through hole and a second groove, wherein the second groove extends in the axial direction and is used to connect with an external first main shaft.
8. The manual clutch according to claim 1, wherein: The sliding clutch includes a first sliding groove, which extends axially and is used for sliding connection with an external second main shaft, so that the sliding clutch can slide along the first direction and rotate synchronously with the external second main shaft.
9. An annealing furnace, characterized in that: The annealing lehr comprises: The manual clutch according to any one of claims 1 to 8; a crossbeam connected to the fixing portion; a first main shaft, one end of the first main shaft being connected to the fixed clutch, the fixed clutch and the first main shaft rotating synchronously; The second main shaft, the sliding clutch is connected to one end of the second main shaft in a slidable manner along the first direction, and the sliding clutch rotates synchronously with the second main shaft.
10. The annealing lehr according to claim 9, characterized in that The first main shaft includes a third groove, a key, and a connecting piece, one end of the connecting piece is connected to the key, the key is arranged in the third groove and protrudes from the first main shaft, the second groove of the fixed clutch is matched with the key, and the connecting piece is arranged in the second through hole of the fixed clutch to fasten the fixed clutch to the first main shaft; The second main shaft includes a fourth groove and a sliding key, the sliding key is arranged in the fourth groove and protrudes from the second main shaft, and the first sliding groove of the sliding clutch cooperates with the sliding key so that the sliding clutch can slide along the first direction and rotate synchronously with the second main shaft.