Gear box of bulking machine
By adopting a symmetrical design and bearing structure in the expander gear box, the problems of low meshing accuracy and large gaps in the existing expander gear box are solved, and higher stability and reliability are achieved.
Patent Information
- Application Number
- CN202422210279.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-10
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-09-10
AI Technical Summary
The structure design of the gear box of the existing expander is unreasonable, resulting in low meshing accuracy and large gaps between the gear shafts, which affects the reliability and stability of the equipment.
A gear box for expander is designed, adopting a symmetrical design between the upper box and the lower box, and the long output shaft and short output shaft are fixed through a double output shaft cover. The position of the gear shaft is limited by using bearings and bearing grooves to ensure the optimization of meshing accuracy and clearance.
The meshing accuracy and clearance between the gear shafts are improved, and the stability and reliability of the gear box of the expander are enhanced.
Smart Images
Figure CN222950371U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of gear boxes, and in particular relates to a gear box for an expander. Background Art
[0002] The puffing machine is a kind of equipment for processing puffed food, such as rice, corn, soybean, wheat, etc. in daily life. Its main working principle is to convert mechanical energy into thermal energy, and use the heat generated by the rotation of the machine to extrude and cook the food. The most obvious feature of puffed food is that its volume increases. The gearbox of the puffing machine is an important component in the puffing equipment, providing power for the application of the puffing machine. The performance of the gearbox directly affects the performance of the puffing machine.
[0003] However, the existing extruder gearbox structure design is unreasonable, resulting in low meshing accuracy and large gaps between gear shafts, which reduces the reliability and stability of the equipment during use. Utility Model Content
[0004] In order to solve the above technical problems, the utility model provides an extruder gearbox to solve the problem that the existing extruder gearbox has an unreasonable structural design, resulting in low meshing accuracy and large gaps between gear shafts, which reduces the reliability and stability of the equipment during use.
[0005] The technical solution adopted by the utility model is as follows:
[0006] A gearbox for an extruder comprises a lower box body and an upper box body fixed thereon, wherein an input shaft is installed inside the lower box body, the input shaft is meshed with a second transmission tooth in a long output shaft on one side through a first transmission tooth, the long output shaft is provided with a third transmission tooth meshed with a lower transmission shaft, one end of the transmission shaft is provided with a fourth transmission tooth meshed with the third transmission tooth, and the other end is provided with a fifth transmission tooth meshed with a sixth transmission tooth in a short output shaft; one end of the long output shaft and one end of the short output shaft are both fixed to one side of the lower box body through a double output shaft cover.
[0007] Furthermore, the internal structures of the upper box body and the lower box body are symmetrical, and the two can be used to limit the positions of the internal input and output shafts after being installed in combination.
[0008] Furthermore, a partition is provided inside the lower box body, and a mounting boss for fixing the short output shaft is provided on one side of the partition.
[0009] Furthermore, bearings are provided at one end of the input shaft and the middle part of the long output shaft, and correspondingly, bearing grooves for holding the bearings are provided inside the partition. After the upper and lower housings are combined, the positions of each gear shaft and bearing can be restricted to prevent them from shaking during operation, thereby ensuring the stability of the gear box.
[0010] Furthermore, the length of the short output shaft is half of the long output shaft, and an output shaft mounting groove for clamping the short output shaft is provided inside the mounting boss.
[0011] Furthermore, the first transmission tooth, the second transmission tooth, the third transmission tooth, the fourth transmission tooth, the fifth transmission tooth and the sixth transmission tooth are all helical gears, which have higher meshing accuracy and smaller clearance.
[0012] Furthermore, an input shaft sealing cover is provided at the connection between the input shaft and the box body.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The first transmission teeth, the second transmission teeth, the third transmission teeth, the fourth transmission teeth, the fifth transmission teeth and the sixth transmission teeth of the utility model are all helical gears, with higher meshing accuracy and smaller gaps, and the internal structures of the upper box body and the lower box body are symmetrical. After the two are installed in combination, they can be used to limit the positions of the internal input and output shafts. After the upper and lower boxes are combined, the positions of the gear shafts and bearings can be limited to prevent them from shaking during operation, thereby ensuring the stability and reliability of the gear box. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the internal structure of the utility model.
[0017] Figure 3 It is a schematic structural diagram of the utility model in which the lower box body and the gear shaft are separated.
[0018] Figure 4 It is a structural schematic diagram of the gear shaft of the utility model.
[0019] Figure 5 It is a structural schematic diagram of the lower box body of the utility model.
[0020] In the figure:
[0021] 1-upper housing, 2-lower housing, 21-partition, 22-mounting boss, 23-bearing groove, 24-output shaft mounting groove, 3-input shaft, 31-first transmission tooth, 32-input shaft sealing cover, 41-second transmission tooth, 42-third transmission tooth, 51-fourth transmission tooth, 52-fifth transmission tooth, 61-sixth transmission tooth, 4-long output shaft, 5-transmission shaft, 6-short output shaft, 7-double output shaft cover. DETAILED DESCRIPTION
[0022] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be described clearly and completely below. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.
[0023] As attached Figure 1 To Attachment Figure 5 shown.
[0024] The utility model provides an extruder gearbox, comprising a lower box body 2 and an upper box body 1 fixed thereon, wherein an input shaft 3 is installed inside the lower box body 2, and the input shaft 3 is meshed with a second transmission tooth 41 in a long output shaft 4 on one side through a first transmission tooth 31, and a third transmission tooth 42 meshed with a lower transmission shaft 5 is provided in the long output shaft 4, and a fourth transmission tooth 51 meshed with the third transmission tooth 42 is provided at one end of the transmission shaft 5, and a fifth transmission tooth 52 meshed with a sixth transmission tooth 61 in a short output shaft 6 is provided at the other end; one end of the long output shaft 4 and one end of the short output shaft 6 are fixed to one side of the lower box body 2 through a double output shaft cover 7.
[0025] The internal structures of the upper box body 1 and the lower box body 2 are symmetrical, and the two can be used to limit the positions of the internal input and output shafts after being assembled.
[0026] One end of the input shaft 3 and the middle of the long output shaft 4 are both provided with bearings, and correspondingly, the interior of the partition plate 21 is provided with a bearing groove 23 for clamping the bearing.
[0027] The length of the short output shaft 6 is half of the length of the long output shaft 4 , and an output shaft mounting groove 24 for clamping the short output shaft 6 is provided inside the mounting protrusion 22 .
[0028] The first transmission gear 31 , the second transmission gear 41 , the third transmission gear 42 , the fourth transmission gear 51 , the fifth transmission gear 52 and the sixth transmission gear 61 are all helical gears.
[0029] During operation, power is input into the gearbox from the input shaft 3, and the input shaft 3 transmits power to the long output shaft 4 through the engagement of the first transmission teeth 31 and the second transmission teeth 41. The long output shaft 4 transmits power to the short output shaft 6 through the transmission shaft 5. The transmission shaft 5 can make the rotation directions of the long output shaft 4 and the short output shaft 4 consistent.
[0030] Utilizing the technical solution described in the utility model, or those skilled in the art designing similar technical solutions inspired by the technical solution of the utility model to achieve the above-mentioned technical effects, all fall within the protection scope of the utility model.
Claims
1. An extruder gearbox, comprising a lower box body (2) and an upper box body (1) fixed thereon, characterized in that: An input shaft (3) is installed inside the lower housing (2). The input shaft (3) meshes with a second transmission tooth (41) in a long output shaft (4) on one side through a first transmission tooth (31). The long output shaft (4) is provided with a third transmission tooth (42) meshing with a lower transmission shaft (5). One end of the transmission shaft (5) is provided with a fourth transmission tooth (51) meshing with the third transmission tooth (42), and the other end is provided with a fifth transmission tooth (52) meshing with a sixth transmission tooth (61) in a short output shaft (6). One end of each of the long output shaft (4) and the short output shaft (6) is fixed to one side of the lower housing (2) through a double output shaft cover (7).
2. The gear box of an extruder according to claim 1, characterized in that: The internal structures of the upper box body (1) and the lower box body (2) are symmetrical, and after being assembled together, the two can be used to limit the positions of the internal input and output shafts.
3. The gear box of an extruder according to claim 2, characterized in that: A partition (21) is provided inside the lower box body (2), and a mounting protrusion (22) is provided on one side of the partition (21).
4. The gear box of an extruder according to claim 3, characterized in that: One end of the input shaft (3) and the middle of the long output shaft (4) are both provided with bearings, and correspondingly, a bearing groove (23) for clamping the bearing is provided inside the partition (21).
5. The gear box of an extruder according to claim 3, characterized in that: The length of the short output shaft (6) is half of the length of the long output shaft (4), and an output shaft mounting groove (24) for clamping the short output shaft (6) is provided inside the mounting protrusion (22).
6. The gear box for an extruder according to claim 1, characterized in that: The first transmission teeth (31), the second transmission teeth (41), the third transmission teeth (42), the fourth transmission teeth (51), the fifth transmission teeth (52) and the sixth transmission teeth (61) are all helical gears.
7. The gear box for an extruder according to claim 1, characterized in that: An input shaft sealing cover (32) is provided at the connection between the input shaft (3) and the housing.