Tension sprocket mechanism and roller transmission device

Abstract

The present invention discloses a tensioning sprocket mechanism, comprising a sprocket, an expansion outer sleeve and an expansion inner sleeve that cooperate with each other, and a locking bolt and a nut that cooperate with each other. The sprocket is provided with a locking inner sleeve, and the two ends of the expansion outer sleeve are respectively connected to the locking inner sleeve and the expansion inner sleeve. The locking bolt passes through the expansion inner sleeve, the expansion outer sleeve, and the sprocket in sequence and is locked with the nut. The tensioning sprocket mechanism of the present invention has a reasonable structural design. The expansion outer sleeve is locked by the expansion inner sleeve and the locking inner sleeve, and the sprocket, the expansion outer sleeve and the expansion inner sleeve are combined into a whole by the locking bolt and the nut. After being installed in the roller, the expansion outer sleeve can expand and tighten in the roller, so that the roller and the sprocket can rotate synchronously and ensure the effectiveness of the connection between the two. It can effectively reduce maintenance time and reduce the production of defective products, while also avoiding environmental damage to maintenance personnel.

Description

Technical Field

[0001] This patent relates to the technical field of roller transmission equipment, and specifically to a tensioning sprocket mechanism and a roller transmission device including the tensioning sprocket mechanism. Background Art

[0002] In existing glass production annealing furnaces, rollers are driven by helical gears and are constantly rotating. If the main drive helical gears wear and stop rotating, they can cause scratches on the glass surface and damage to the rollers. Since the rollers are trapped inside the furnace, quick replacement is impossible. The best solution is to minimize the time they remain idle and reduce losses. Furthermore, worn main drive helical gears are difficult to repair online, creating a harsh maintenance environment and resulting in prolonged batch losses. Summary of the Invention

[0003] In view of this, in order to solve the problems of the prior art, the present invention provides a tensioning sprocket mechanism, which can be applied to the rollers of the annealing furnace to effectively ensure the synchronous rotation of the sprocket and the rollers.

[0004] In order to achieve the above object, the present invention adopts the following technical solutions:

[0005] A tensioning sprocket mechanism includes a sprocket, an expansion outer sleeve and an expansion inner sleeve that cooperate with each other, and a locking bolt and a nut that cooperate with each other. The sprocket is provided with a locking inner sleeve, and the two ends of the expansion outer sleeve are respectively connected to the locking inner sleeve and the expansion inner sleeve. The locking bolt passes through the expansion inner sleeve, the expansion outer sleeve, and the sprocket in sequence and is locked with the nut.

[0006] The expansion outer sleeve is locked by the expansion inner sleeve and the locking inner sleeve, and the sprocket, expansion outer sleeve and expansion inner sleeve are combined into a whole by the locking bolts and nuts. After it is installed in the inner hole of the roller shaft, the expansion outer sleeve can expand and tighten in the inner hole of the roller shaft, so that the roller and sprocket can rotate synchronously and ensure the effectiveness of the connection between the two.

[0007] Preferably, the expansion sleeve is provided with a locking block, and the locking inner sleeve is provided with a locking groove that cooperates with the locking block. After the tensioning sprocket mechanism is installed, the locking block is located in the locking groove. The cooperation between the locking block and the locking groove further secures the connection between the expansion sleeve and the sprocket.

[0008] More preferably, the locking block is disposed on the inner wall of the expansion sleeve, and the locking groove is disposed on the outer surface of the locking inner sleeve, i.e., both the locking inner sleeve and the expansion inner sleeve are mounted within the expansion sleeve. The locking block is disposed along the extension direction of the expansion sleeve. In some embodiments, the length of the locking block is half that of the expansion sleeve, and the length of the locking block is greater than or equal to the length of the locking groove, thereby further securing the connection between the expansion sleeve and the locking inner sleeve.

[0009] Preferably, the locking inner sleeve and the expansion inner sleeve are truncated cone-shaped, with their diameters closer to the expansion outer sleeve being smaller than their diameters farther from the expansion outer sleeve. The height of the expansion outer sleeve's inner wall gradually decreases from its axial center toward the expansion outer sleeve. Specifically, the small ends of the locking inner sleeve and the expansion inner sleeve face the expansion outer sleeve and are accommodated within the expansion outer sleeve. By inserting the locking inner sleeve and the expansion inner sleeve into the expansion outer sleeve, the expansion outer sleeve can expand outward, thereby ensuring an effective connection between the sprocket and the roller.

[0010] More preferably, the inclination angle of the outer wall of the expansion inner sleeve is 3-10°, the inclination angle of the outer wall of the locking inner sleeve is 3-10°, and the inclination angle of the inner wall of the expansion outer sleeve is greater than or equal to the inclination angle of the expansion inner sleeve or the locking inner sleeve. In some embodiments of the present invention, the inclination angle of the outer wall of the expansion inner sleeve is preferably 5°, the inclination angle of the outer wall of the locking inner sleeve is 5°, and the inclination angle of the inner wall of the expansion outer sleeve is 5°.

[0011] Preferably, an expansion groove is formed on the outer wall of the expansion jacket, extending along the extension direction of the expansion jacket. The expansion groove serves to increase friction between the expansion jacket and the roller shaft. Alternatively, a protrusion matching the expansion groove may be provided at a corresponding position on the roller shaft to further increase friction between the two, effectively ensuring the connection between the expansion jacket and the roller, and ensuring synchronous rotation between the sprocket and the roller.

[0012] More preferably, the expansion grooves are evenly distributed on the outer wall of the expansion jacket.

[0013] Preferably, the expansion sleeve is provided with an expansion opening, the expansion opening penetrating the wall of the expansion sleeve and extending along the extension direction of the expansion sleeve. The expansion opening allows the expansion sleeve to effectively expand when the locking inner sleeve and the expansion inner sleeve are inserted into the expansion sleeve, thereby effectively connecting with the roller shaft.

[0014] Preferably, the sprocket has an annular groove along the periphery of the locking inner sleeve, and one end of the expansion sleeve is received within the annular groove. By providing the annular groove, the one end of the expansion sleeve is pressed against the annular groove, thereby strengthening the connection between the expansion sleeve and the sprocket and effectively reducing the volume of the tensioning sprocket mechanism. The annular groove can also be used to connect to the end of the roller shaft.

[0015] The present invention also provides a roller transmission device comprising a roller, a helical gear mechanism disposed at one end of the roller shaft, and the aforementioned tensioning sprocket mechanism disposed at the other end of the roller shaft. By installing the tensioning sprocket mechanism within the inner hole of the roller shaft, an effective connection between the sprocket and the roller shaft can be ensured.

[0016] Compared with the prior art, the benefits of the present invention are that: the tensioning sprocket mechanism of the present invention has a reasonable structural design, the expansion outer sleeve is locked by the expansion inner sleeve and the locking inner sleeve, and the sprocket, expansion outer sleeve and expansion inner sleeve are combined into a whole by the locking bolts and nuts. After it is installed in the inner hole of the roller shaft, the expansion outer sleeve can expand and tighten in the inner hole of the roller shaft, so that the roller shaft and the sprocket can rotate synchronously and ensure the effectiveness of the connection between the two, which can effectively reduce maintenance time, reduce the production of defective products, and also avoid environmental damage to maintenance personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A partial exploded view of a roller transmission device in a preferred embodiment of the present invention;

[0019] Figure 2 A perspective view of a roller transmission device in a preferred embodiment of the present invention;

[0020] Figure 3 A three-dimensional diagram of a tension sprocket mechanism in a preferred embodiment of the present invention;

[0021] Figure 4 An exploded view of a tension sprocket mechanism in a preferred embodiment of the present invention;

[0022] Figure 5 A perspective view of an expansion jacket in a preferred embodiment of the present invention;

[0023] Figure 6 A side view of an expansion jacket according to a preferred embodiment of the present invention;

[0024] Figure 7 for Figure 6 Cross-section of the middle BB;

[0025] Figure 8 A side view of an expansion inner sleeve in a preferred embodiment of the present invention;

[0026] Among them: tensioning sprocket mechanism-1, sprocket-2, locking inner sleeve-21, locking groove-22, annular groove-23, expansion outer sleeve-3, locking block-31, expansion groove-32, expansion port-33, expansion inner sleeve-4, locking bolt-5, nut-6, roller-7, bevel gear mechanism-8, expansion inclined surface-9, bolt hole-10. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0028] Reference Figure 1-8 The roller transmission device of this embodiment includes a roller 7, a helical gear mechanism 8 disposed at one end of the roller shaft, and a tensioning sprocket mechanism 1 disposed at the other end of the roller shaft. By installing the tensioning sprocket mechanism 1 within the inner hole of the roller shaft, the sprocket 2 is effectively connected to the roller shaft, ensuring synchronous rotation between the roller 7 and the sprocket 2.

[0029] The tensioning sprocket mechanism 1 of this embodiment includes a sprocket 2, an expansion outer sleeve 3 and an expansion inner sleeve 4 that cooperate with each other, and a locking bolt 5 and a nut 6 that cooperate with each other. A locking inner sleeve 21 is provided on the sprocket 2, and the two ends of the expansion outer sleeve 3 are respectively connected to the locking inner sleeve 21 and the expansion inner sleeve 4. The locking inner sleeve 21 and the expansion inner sleeve 4 are both installed inside the expansion outer sleeve 3. Bolt holes 10 are provided on the sprocket 2 and the expansion inner sleeve 4. The locking bolt 5 passes through the expansion inner sleeve 4, the expansion outer sleeve 3, and the sprocket 2 in sequence and is locked with the nut 6.

[0030] A locking block 31 is provided on the inner wall of the expansion sleeve 3. A locking groove 22 is formed on the outer surface of the locking inner sleeve 21, which mates with the locking block 31. After the tensioning sprocket mechanism 1 is installed, the locking block 31 is located within the locking groove 22. The locking block 31 extends along the expansion sleeve 3. In this embodiment, the length of the locking block 31 is half the length of the expansion sleeve 3, and the length of the locking groove 22 is equal to that of the locking block 31. The engagement of the locking block 31 and the locking groove 22 ensures a more secure and stable connection between the expansion sleeve 3 and the sprocket 2.

[0031] like Figure 1 and Figure 4-8 As shown, both the locking inner sleeve 21 and the expansion inner sleeve 4 are truncated cone-shaped. The diameters of the locking inner sleeve 21 and the expansion inner sleeve 4 on the side closest to the expansion outer sleeve 3 are smaller than those on the side further away from the expansion outer sleeve 3. The height of the inner wall of the expansion outer sleeve 3 gradually decreases from its center toward the sides. Specifically, the small ends of the locking inner sleeve 21 and the expansion inner sleeve 4 face the expansion outer sleeve 3 and are accommodated within the expansion outer sleeve 3. By inserting the locking inner sleeve 21 and the expansion inner sleeve 4 into the expansion outer sleeve 3, the expansion outer sleeve 3 can expand outward, thereby ensuring an effective connection between the sprocket 2 and the roller shaft.

[0032] In this embodiment, the outer wall of the expansion inner sleeve 4 preferably has an inclination angle of 5°, the outer wall of the locking inner sleeve 21 preferably has an inclination angle of 5°, and the inner wall of the expansion outer sleeve 3 preferably has an inclination angle of 5°. By configuring the outer surfaces of the expansion inner sleeve 4, the outer surfaces of the locking inner sleeve 21, and the inner surface of the expansion outer sleeve 3 as inclined surfaces, they cooperate to form an expansion slope 9. When the locking inner sleeve 21 and the expansion inner sleeve 4 are inserted into the expansion outer sleeve 3, the expansion effect is achieved through the cooperation of the expansion slope 9, causing the expansion outer sleeve 3 to expand outward by an appropriate amount, thereby securing the connection between the sprocket 2 and the roller shaft and achieving synchronous rotation.

[0033] like Figure 3-7 As shown, the outer wall of the expansion jacket 3 is provided with expansion grooves 32 extending along the extension direction of the expansion jacket 3 and evenly distributed along the outer wall of the expansion jacket 3. The expansion grooves 32 are used to increase friction between the expansion jacket 3 and the roller shaft. Alternatively, corresponding protrusions matching the expansion grooves 32 may be provided on the roller shaft to further increase friction, effectively ensuring the connection between the expansion jacket 3 and the roller shaft and the synchronous rotation of the sprocket 2 and the roller shaft. The expansion grooves 32 in this embodiment are rectangular, but other shapes are possible in other embodiments.

[0034] To achieve a better expansion effect, in this embodiment, an expansion opening 33 is provided on the expansion jacket 3. The expansion opening 33 penetrates the wall of the expansion jacket 3 and extends along the extension direction of the expansion jacket 3. The expansion opening 33 ensures that when the locking inner jacket 21 and the expansion inner jacket 4 are inserted into the expansion jacket 3, the expansion inclined surfaces 9 cooperate with each other, allowing the expansion jacket 3 to effectively expand and connect with the roller shaft.

[0035] In this embodiment, the sprocket 2 has an annular groove 23 formed along the periphery of the locking inner sleeve 21, and one end of the expansion sleeve 3 is received within the annular groove 23. By providing the annular groove 23 and tightening one end of the expansion sleeve 3 within the annular groove 23, the connection between the expansion sleeve 3 and the sprocket 2 is strengthened and the volume of the tensioning sprocket mechanism 1 is effectively reduced. Furthermore, the annular groove 23 allows for a tight connection with the end of the roller shaft.

[0036] In specific implementations, one approach involves pre-installing the aforementioned tensioning sprocket mechanism and a matching chain on one end of all roller shafts. This allows for synchronous rotation of all rollers, even if the helical gear mechanism on one or more rollers fails, preventing defective products. Another approach involves installing the aforementioned tensioning sprocket mechanism on one end of the failed roller and the preceding or succeeding functioning roller, and installing a chain between the sprockets of the failed and functioning rollers. The chain and tensioning sprocket mechanism ensure synchronous rotation of the failed and functioning rollers.

[0037] In the prior art, after the active helical gear fails, the roller cannot rotate normally, rubbing against the lower surface of the glass, resulting in defective products. Furthermore, the ambient temperature is high, and disassembling the gear for repair takes a long time (at least 2 hours), creating a harsh working environment for maintenance personnel. The tensioning sprocket mechanism of the present invention has a rational structural design. The expansion outer sleeve is locked by an expansion inner sleeve and a locking inner sleeve, and the sprocket, expansion outer sleeve, and expansion inner sleeve are combined into a whole by locking bolts and nuts. After being installed in the roller, the expansion outer sleeve can expand and tighten in the inner hole of the roller shaft, allowing the roller shaft and sprocket to rotate synchronously and ensuring the effectiveness of the connection between the two. This can effectively reduce maintenance time (to a minimum of 5 minutes), reduce the production of defective products, and also avoid environmental damage to maintenance personnel. The tensioning sprocket mechanism of the present invention is easy to install and can be used as long as there is an inner hole in the roller shaft, achieving quick installation and quick start-up.

[0038] The above embodiments are only for illustrating the technical concept and features of the present invention. Their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the scope of protection of the present invention.

Claims

1. A tensioning sprocket mechanism, wherein the tensioning sprocket mechanism is provided at one end of a roller shaft, and a helical gear mechanism is provided at the other end of the roller shaft, characterized in that: It includes a sprocket, an expansion outer sleeve and an expansion inner sleeve that cooperate with each other, and a locking bolt and a nut that cooperate with each other. The sprocket is provided with a locking inner sleeve. The two ends of the expansion outer sleeve are respectively connected to the locking inner sleeve and the expansion inner sleeve. The locking bolt passes through the expansion inner sleeve, the expansion outer sleeve, and the sprocket in sequence and is locked with the nut. The expansion outer sleeve is provided with a locking block, and the locking inner sleeve is provided with a locking groove that cooperates with the locking block. After the tensioning sprocket mechanism is installed, the locking block is located in the locking groove; the locking block is provided on the inner wall of the expansion outer sleeve, and the locking groove is provided on the outer surface of the locking inner sleeve; the locking inner sleeve and the expansion inner sleeve are truncated cone-shaped, and the diameters of the locking inner sleeve and the expansion inner sleeve on the side close to the expansion outer sleeve are smaller than the diameters on the side away from the expansion outer sleeve, and the height of the inner wall of the expansion outer sleeve gradually decreases toward both sides along its axial middle; An expansion groove is formed on the outer wall of the expansion jacket, and the expansion groove extends along the extension direction of the expansion jacket; the expansion grooves are evenly distributed on the outer wall of the expansion jacket; an expansion opening is formed on the expansion jacket, and the expansion opening passes through the wall of the expansion jacket and is opened along the extension direction of the expansion jacket; the sprocket is formed with an annular groove along the periphery of the locking inner sleeve, and one end of the expansion jacket is accommodated in the annular groove; A protrusion matching the expansion groove is provided at a corresponding position on the roller shaft.

2. The tension sprocket mechanism according to claim 1, characterized in that: The inclination angle of the outer wall of the expansion inner sleeve is 3-10 degrees, and the inclination angle of the outer wall of the locking inner sleeve is 3-10 degrees.

3. A roller transmission device, comprising a roller shaft and a helical gear mechanism arranged at one end of the roller shaft, characterized in that: It also includes a tensioning sprocket mechanism as described in any one of claims 1-2, which is arranged at the other end of the roller shaft.

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