A side-drive gearbox for a pulping machine

By using multiple spur gears and side gearbox shafts in the pulper to replace the drive belt and drive wheel, the problem of belt breakage in the drive gearbox was solved, and the stable and safe operation of the pulper was achieved.

CN224579729UActive Publication Date: 2026-07-31TAIZHOU LUQIAO HENGCHUANG TRANSMISSION MASCH CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
TAIZHOU LUQIAO HENGCHUANG TRANSMISSION MASCH CO LTD
Filing Date
2025-08-07
Publication Date
2026-07-31

AI Technical Summary

Technical Problem

In traditional pulping machines, the drive belt in the transmission gearbox is prone to breakage, leading to instability and poor safety in the pulping process.

Method used

The use of multiple spur gears and side gearbox shafts replaces the transmission belt and drive wheel, ensuring stable operation of the pulper. The design of the sprocket box outer flange, sealing gasket, and roller bearings improves the stability and sealing of the connection.

Benefits of technology

This has enabled stable operation and improved safety of the pulping machine, avoiding wear and breakage of the drive belt and ensuring uniform pulping.

✦ Generated by Eureka AI based on patent content.

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Abstract

This utility model provides a side-drive gearbox for a pulping machine, including a cast side box. A side gearbox cutter connecting shaft is rotatably connected to one side of the cast side box via a tapered roller bearing. A bushing is rotatably connected to the other side of the cast side box. Two side gearbox shafts are rotatably connected to the middle of the cast side box. A third spur gear is fixedly mounted on the outer surface of the bushing. A second spur gear is fixedly mounted on the surface of the side gearbox shaft near the bushing, and a first spur gear is fixedly mounted on the surface of the side gearbox shaft away from the bushing. This side-drive gearbox, through the cooperation of multiple spur gears and multiple side gearbox shafts, can stably drive the rotation of the side gearbox cutter connecting shaft, replacing the traditional transmission between the drive motor and the pulping cutter shaft via a transmission belt and pulley. This ensures the stable operation of the pulping machine, thereby ensuring the uniformity of pulping and the safety of operation.
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Description

Technical Field

[0001] This utility model belongs to the technical field of pulping machines and relates to a side transmission gearbox for a pulping machine. Background Technology

[0002] A pulping machine is a processing instrument mainly used to crush materials into a pulp. After the material enters the screen cylinder, the rotation of the rollers and the existence of the lead angle cause the material to move along the cylinder towards the outlet end. The transmission gearbox is an important component of the pulping machine.

[0003] In traditional pulping machines, the drive motor and pulping blades are typically connected via a drive sprocket and a drive belt. However, the drive belt is prone to breakage during use, which affects the stability and safety of the pulping process. To address this issue, we designed a side-drive gearbox for the pulping machine. Summary of the Invention

[0004] The purpose of this invention is to provide a side-drive gearbox for a pulping machine to solve the problems mentioned in the background art.

[0005] The objective of this utility model can be achieved through the following technical solution: A side transmission gearbox for a pulping machine includes a cast side box. One side of the cast side box is rotatably connected to a side gearbox cutter connecting shaft via a tapered roller bearing. The other side of the cast side box is rotatably connected to a bushing. Two side gearbox shafts are rotatably connected to the middle of the cast side box. A third spur gear is fixedly provided on the outer surface of the bushing. A second spur gear is fixedly provided on the surface of the side gearbox shaft near the bushing. A first spur gear is fixedly provided on the surface of the side gearbox shaft away from the bushing. The first spur gear meshes with the second spur gear, and the second spur gear meshes with the first spur gear.

[0006] In the aforementioned side transmission gearbox of a pulping machine, the end of the side gearbox cutter connecting shaft is provided with a sprocket box outer flange that is fixedly connected to the casting side box, and a sealing gasket and a metal gasket are fitted at the connection between the sprocket box outer flange and the casting side box.

[0007] In the aforementioned side transmission gearbox of a pulping machine, the connection between the two side gearbox shafts and the casting side box is provided with a locking hole for an internal engaging roller bearing, and the roller bearing is rotatably connected to the surface of the side gearbox shaft.

[0008] In the aforementioned side transmission gearbox of a pulping machine, an inner gearbox shaft cover is fixedly installed at the inner connection between the two side gearbox shafts and the casting side box, and an outer gearbox shaft cover is fixedly installed at the outer connection between the two side gearbox shafts and the casting side box. An O-ring is sleeved and connected at the connection between the inner and outer gearbox shaft covers and the casting side box.

[0009] In the aforementioned side transmission gearbox of a pulping machine, a limiting ring is fixedly provided at the alignment position of the inner gearbox shaft cover and is fixedly connected to the casting side box. The limiting ring is nested and connected to the side gearbox shaft.

[0010] In the aforementioned side transmission gearbox of a pulping machine, both sides of the cast side box are fixedly provided with connecting edges, and the surfaces of the two connecting edges are provided with multiple mounting holes.

[0011] Compared with the prior art, the advantages of the side transmission gearbox of the pulping machine of this utility model are as follows: the side transmission gearbox, through the cooperation of multiple spur gears and multiple side gearbox shafts, can stably drive the rotation of the side gearbox cutter connecting shaft, replacing the traditional transmission between the drive motor and the pulping cutter shaft through the transmission belt and transmission wheel, thereby ensuring the stable operation of the pulping machine, and thus ensuring the pulping uniformity and operational safety of the pulping machine. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of a side transmission gearbox for a pulping machine according to this utility model.

[0013] Figure 2 This is a top view schematic diagram of the side transmission gearbox of a pulping machine according to the present invention.

[0014] Figure 3 This is a front structural diagram of a side transmission gearbox for a pulping machine according to the present invention.

[0015] Figure 4 This is a cross-sectional structural diagram of a side transmission gearbox for a pulping machine according to the present invention.

[0016] In the diagram, 1. Cast side box; 2. Outer flange of sprocket box; 3. Side gearbox cutter connecting shaft; 4. Tapered roller bearing; 5. First spur gear; 6. Outer gearbox shaft cover; 7. Side gearbox shaft; 8. O-ring; 9. Snap hole; 10. Second spur gear; 11. Third spur gear; 12. Inner gearbox shaft cover; 13. Limiting ring; 14. Metal gasket; 15. Sealing gasket; 16. Shaft sleeve. Detailed Implementation

[0017] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0018] like Figure 1-4 As shown, this utility model discloses a side transmission gearbox for a pulping machine, including a cast side box 1. One side of the cast side box 1 is rotatably connected to a side gearbox cutter connecting shaft 3 via a tapered roller bearing 4. The other side of the cast side box 1 is rotatably connected to a bushing 16. Two side gearbox shafts 7 are rotatably connected to the middle of the cast side box 1. A third spur gear 11 is fixedly provided on the outer surface of the bushing 16. A second spur gear 10 is fixedly provided on the surface of the side gearbox shaft 7 near the bushing 16. A first spur gear 5 is fixedly provided on the surface of the side gearbox shaft 7 away from the bushing 16. The first spur gear 5 meshes with the second spur gear 10, and the second spur gear 10 meshes with the first spur gear 5.

[0019] Specifically, the side transmission gearbox, through the cooperation of multiple spur gears and multiple side gearbox shafts 7, can stably drive the rotation of the side gearbox cutter connecting shaft 3, replacing the traditional transmission between the drive motor and the pulping cutter shaft via a transmission belt and transmission wheel, thereby ensuring the stable operation of the pulping machine, and thus ensuring the uniformity of pulping and the safety of operation of the pulping machine.

[0020] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the present invention discloses a side transmission gearbox for a pulping machine. The end of the side gearbox cutter connecting shaft 3 is provided with a sprocket box outer flange 2 that is fixedly connected to the casting side box 1. A sealing gasket 15 and a metal gasket 14 are sleeved at the connection between the sprocket box outer flange 2 and the casting side box 1.

[0021] Specifically, by setting the outer flange 2 of the sprocket box, one end of the side gear box cutter connecting shaft 3 can be sealed.

[0022] The two side gearbox shafts 7 are connected to the casting side box 1 by a locking hole 9 for internal engagement with roller bearings, and the roller bearings are rotatably connected to the surface of the side gearbox shafts 7.

[0023] Specifically, the opening of the 9-hole facilitates the fixed installation of the roller bearing.

[0024] An inner gearbox shaft cover 12 is fixedly installed at the inner connection between the two side gearbox shafts 7 and the casting side box 1, and an outer gearbox shaft cover 6 is fixedly installed at the outer connection between the two side gearbox shafts 7 and the casting side box 1. An O-ring 8 is sleeved and connected at the connection between the inner gearbox shaft cover 12 and the outer gearbox shaft cover 6 and the casting side box 1.

[0025] Specifically, the sealing performance at the connection between the side gearbox shaft 7 and the cast side box 1 is effectively improved by the cooperation of the outer gearbox shaft cover 6, the inner gearbox shaft cover 12 and the O-ring 8.

[0026] A limiting ring 13 is fixedly provided at the alignment position of the inner gearbox shaft cover 12 and is fixedly connected to the casting side box 1. The limiting ring 13 is nested and connected to the side gearbox shaft 7.

[0027] Specifically, the limiting ring 13 can limit and guide the side gearbox shaft 7, ensuring that it does not deviate during rotation.

[0028] Both sides of the casting side box 1 are fixedly provided with connecting edges, and multiple mounting holes are opened on the surface of the two connecting edges.

[0029] Specifically, the mounting holes on the connecting edge surface facilitate the installation and fixation of the transmission gearbox.

[0030] In specific implementation, firstly, the pulping blade of the pulping machine is connected to the side gearbox cutter connecting shaft 3. Then, the output shaft of the drive motor of the pulping machine is fixedly connected to the bushing 16. When the drive motor is working, it drives the third spur gear 11 on the surface of the bushing 16 to rotate. The third spur gear 11 meshes with the second spur gear 10, and the second spur gear 10 meshes with the first spur gear 5, thereby driving the rotation of the side gearbox cutter connecting shaft 3. This ensures the stable rotation of the side gearbox cutter connecting shaft 3, replacing the traditional transmission between the drive motor and the pulping blade shaft via a transmission belt and transmission wheel. This avoids belt breakage due to wear of the transmission belt, which could affect the pulping stability and safety of the pulping machine.

[0031] Contents not described in detail herein are existing technologies known to those skilled in the art. The specific embodiments described herein are merely illustrative examples illustrating the spirit of this invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this invention or exceeding the scope defined by the appended claims.

Claims

1. A side-drive gearbox for a pulping machine, comprising a cast side box (1), characterized in that, One side of the casting side box (1) is rotatably connected to a side gearbox cutter connecting shaft (3) via a tapered roller bearing (4). The other side of the casting side box (1) is rotatably connected to a bushing (16). Two side gearbox shafts (7) are rotatably connected to the middle of the casting side box (1). A third spur gear (11) is fixedly provided on the outer surface of the bushing (16). A second spur gear (10) is fixedly provided on the surface of the side gearbox shaft (7) close to the bushing (16). A first spur gear (5) is fixedly provided on the surface of the side gearbox shaft (7) away from the bushing (16). The first spur gear (5) meshes with the second spur gear (10), and the second spur gear (10) meshes with the first spur gear (5).

2. The side transmission gearbox of a pulping machine according to claim 1, characterized in that, The end of the side gearbox cutter connecting shaft (3) is provided with a sprocket box outer flange (2) that is fixedly connected to the casting side box (1), and a sealing gasket (15) and a metal gasket (14) are sleeved at the connection between the sprocket box outer flange (2) and the casting side box (1).

3. The side transmission gearbox of a pulping machine according to claim 1, characterized in that, The two side gearbox shafts (7) are connected to the casting side box (1) by internal locking holes (9) for roller bearings, and the roller bearings are rotatably connected to the surface of the side gearbox shafts (7).

4. The side transmission gearbox of a pulping machine according to claim 3, characterized in that, An inner gearbox shaft cover (12) is fixedly installed at the inner connection between the two side gearbox shafts (7) and the casting side box (1), and an outer gearbox shaft cover (6) is fixedly installed at the outer connection between the two side gearbox shafts (7) and the casting side box (1). An O-ring (8) is sleeved and connected at the connection between the inner gearbox shaft cover (12) and the outer gearbox shaft cover (6) and the casting side box (1).

5. The side transmission gearbox of a pulping machine according to claim 4, characterized in that, A limiting ring (13) is fixedly provided at the alignment position of the inner gearbox shaft cover (12) and is fixedly connected to the casting side box (1). The limiting ring (13) is nested and connected to the side gearbox shaft (7).

6. The side transmission gearbox of a pulping machine according to claim 4, characterized in that, Both sides of the casting side box (1) are fixedly provided with connecting edges, and multiple mounting holes are opened on the surface of the two connecting edges.