A cast gear with a quick assembly structure
By using the limiting and engaging structure of dovetail groove and dovetail block, guide block and guide groove, and threaded connection, the problem of low assembly and disassembly efficiency of cast gears is solved, realizing rapid assembly and disassembly and enhancing structural strength.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANTONG YUNXIANG MASCH MFG CO LTD
- Filing Date
- 2025-09-17
- Publication Date
- 2026-06-23
AI Technical Summary
Existing cast gears are inefficient in assembly and disassembly processes, making it difficult to achieve rapid assembly and disassembly.
The design employs a limiting and engaging structure consisting of dovetail grooves and dovetail blocks, and guide blocks and guide grooves, combined with threaded connections, to achieve stable splicing and quick disassembly of the upper and lower gears. Through the cooperation of fixing bolts and threaded holes, the casting gears are stably installed and separated on the drive shaft.
It enables rapid assembly and disassembly of cast gears, improving assembly efficiency and enhancing structural strength.
Smart Images

Figure CN224397057U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of cast gears, specifically a cast gear with a quick assembly structure. Background Technology
[0002] Cast gears are gears manufactured using casting processes, typically made of cast steel or alloy steel, and are widely used in industrial equipment. Common processing methods for cast gears include sand casting, metal mold casting, and centrifugal casting. Sand casting is suitable for large cast iron gears, metal mold casting is suitable for medium-sized steel gears, and centrifugal casting is used for pre-forming solid blanks. However, existing cast gears are not convenient for quick assembly and disassembly, thus affecting assembly and disassembly efficiency.
[0003] To address the aforementioned issues, a cast gear with a quick-assembly structure is proposed. Utility Model Content
[0004] The purpose of this invention is to provide a cast gear with a quick assembly structure to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a cast gear with a quick assembly structure, comprising an upper half tooth, a lower half tooth engaged at the bottom end of the upper half tooth, an upper mounting seat fixedly disposed on the inner side of the upper half tooth, a lower mounting seat fixedly disposed on the inner side of the lower half tooth, a transmission shaft disposed between the upper and lower mounting seats, dovetail grooves provided on both sides of the connection between the lower and upper half teeth, two dovetail blocks fixedly disposed at the connection between the upper and lower half teeth, the two dovetail grooves being slidably connected to the two dovetail blocks respectively, an installation groove provided at the top of the upper mounting seat, a first threaded hole provided on the inner side of the installation groove, and a fixing bolt disposed on the internal thread of the first threaded hole.
[0006] The upper and lower gears are securely joined by two dovetail grooves that engage with two dovetail blocks and two guide blocks that engage with two guide grooves. Several connecting slots engage with several connecting blocks to facilitate the initial installation of the cast gear on the drive shaft. Then, the casting gear is securely installed on the drive shaft by fixing bolts to the second threaded hole, thus achieving rapid assembly. Loosening the fixing bolts separates the casting gear from the second threaded hole, and sliding the lower gear separates the two dovetail grooves from the two dovetail blocks, thereby quickly separating the lower and upper gears and achieving rapid disassembly of the casting gear.
[0007] Preferably, the top end of the drive shaft is provided with a second threaded hole, and the fixing bolt is threadedly connected to the second threaded hole. The fixing bolt and the second threaded hole are threadedly fixed to facilitate further fixation of the cast gear.
[0008] Preferably, guide blocks are fixedly provided at the bottom of the inner side of the two dovetail grooves, and guide grooves are provided at the bottom of the two dovetail blocks. The cooperation between the two guide blocks and the two guide grooves facilitates the initial connection of the upper half tooth and the lower half tooth.
[0009] Preferably, a first arc-shaped reinforcing member is fixedly provided on the outer side of the front surface of the upper half tooth, and a plurality of first reinforcing rods are fixedly provided between the first arc-shaped reinforcing member and the upper mounting base. The plurality of first reinforcing rods are all fixedly connected to the upper half tooth. The structural strength of the upper half tooth can be improved by the cooperation of the first arc-shaped reinforcing member and the plurality of first reinforcing rods.
[0010] Preferably, a second arc-shaped reinforcing member is fixedly provided on the outer side of the front surface of the lower half tooth, and a plurality of second reinforcing rods are fixedly provided between the second arc-shaped reinforcing member and the lower mounting base. The plurality of second reinforcing rods are all fixedly connected to the lower half tooth. The structural strength of the lower half tooth can be improved by the cooperation of the second arc-shaped reinforcing member and the plurality of second reinforcing rods.
[0011] Preferably, a plurality of connecting slots are fixedly provided at the connection between the lower mounting base and the drive shaft, and a plurality of connecting blocks are provided at the connection between the drive shaft and the lower mounting base. The plurality of connecting slots are slidably connected to the plurality of connecting blocks respectively. The limiting engagement of the plurality of connecting slots with the plurality of connecting blocks facilitates the initial installation of the cast gear on the drive shaft.
[0012] Preferably, both the upper mounting base and the lower mounting base are made of stainless steel.
[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: the two dovetail grooves are respectively engaged with the two dovetail blocks for limiting and locking, and the two guide blocks are respectively engaged with the two guide grooves to facilitate the stable splicing of the upper half tooth and the lower half tooth. Then, the casting gear is initially installed on the drive shaft by the limiting and locking of several connecting slots with several connecting blocks. Then, the casting gear is firmly installed on the drive shaft by the threaded fixing of the fixing bolt and the second threaded hole, thereby realizing the rapid assembly of the casting gear. By loosening the fixing bolt, it is separated from the second threaded hole, and then the lower half tooth is slid to separate the two dovetail grooves from the two dovetail blocks, thereby quickly separating the lower half tooth from the upper half tooth, thus realizing the rapid disassembly of the casting gear. Attached Figure Description
[0014] Figure 1 This is a perspective view of the present utility model;
[0015] Figure 2 This is a front sectional view of the present invention;
[0016] Figure 3 This is an enlarged view of part A of this utility model;
[0017] Figure 4 This is an enlarged view of part B of the present invention.
[0018] In the diagram: 1. Upper half tooth; 2. Lower half tooth; 3. Upper mounting base; 4. Lower mounting base; 5. Drive shaft; 6. Connecting slot; 7. Connecting block; 8. Mounting groove; 9. First threaded hole; 10. Fixing bolt; 11. Second threaded hole; 12. Dovetail groove; 13. Dovetail block; 14. Guide groove; 15. Guide block; 16. First arc-shaped reinforcement; 17. First reinforcing rod; 18. Second arc-shaped reinforcement; 19. Second reinforcing rod. Detailed Implementation
[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.
[0020] Please see Figure 1-4 This utility model provides a cast gear with a quick assembly structure, including an upper half gear 1, a lower half gear 2 engaged at the bottom end of the upper half gear 1, an upper mounting seat 3 fixedly mounted on the inner side of the upper half gear 1, a lower mounting seat 4 fixedly mounted on the inner side of the lower half gear 2, a drive shaft 5 between the upper mounting seat 3 and the lower mounting seat 4, dovetail grooves 12 on both sides of the connection between the lower half gear 2 and the upper half gear 1, two dovetail blocks 13 fixedly mounted at the connection between the upper half gear 1 and the lower half gear 2, the two dovetail grooves 12 being slidably connected to the two dovetail blocks 13 respectively, an mounting groove 8 on the top of the upper mounting seat 3, a first threaded hole 9 on the inner side of the mounting groove 8, a fixing bolt 10 threaded inside the first threaded hole 9, and the two dovetail grooves 12 being connected to the upper half gear 13. The limiting engagement of the two dovetail blocks 13 and the cooperation of the two guide blocks 15 with the two guide grooves 14 facilitate the stable splicing of the upper half gear 1 and the lower half gear 2. Then, the limiting engagement of several connecting slots 6 with several connecting blocks 7 facilitates the initial installation of the cast gear on the drive shaft 5. Then, the threaded fixing of the fixing bolts 10 and the second threaded hole 11 facilitates the stable installation of the cast gear on the drive shaft 5, thereby realizing the rapid assembly of the cast gear. By loosening the fixing bolts 10, the cast gear is separated from the second threaded hole 11. Then, the lower half gear 2 is slid to separate the two dovetail grooves 12 from the two dovetail blocks 13, thereby quickly separating the lower half gear 2 from the upper half gear 1, thus realizing the rapid disassembly of the cast gear.
[0021] The top end of the drive shaft 5 is provided with a second threaded hole 11, and the fixing bolt 10 is threadedly connected to the second threaded hole 11. Guide blocks 15 are fixedly provided at the bottom of the inner side of the two dovetail grooves 12, and guide grooves 14 are provided at the bottom of the two dovetail blocks 13. A first arc-shaped reinforcing member 16 is fixedly provided on the outer side of the front of the upper half tooth 1. Several first reinforcing rods 17 are fixedly provided between the first arc-shaped reinforcing member 16 and the upper mounting base 3. Several first reinforcing rods 17 are fixedly connected to the upper half tooth 1.
[0022] In use, the fixing bolt 10 and the second threaded hole 11 are used to further fix the cast gear. The two guide blocks 15 are used to cooperate with the two guide grooves 14 to facilitate the initial connection between the upper half tooth 1 and the lower half tooth 2. The first arc-shaped reinforcing member 16 and several first reinforcing rods 17 are used to improve the structural strength of the upper half tooth 1.
[0023] A second arc-shaped reinforcing member 18 is fixedly installed on the outer side of the front of the lower half tooth 2. Several second reinforcing rods 19 are fixedly installed between the second arc-shaped reinforcing member 18 and the lower mounting base 4. Several second reinforcing rods 19 are fixedly connected to the lower half tooth 2. Several connecting slots 6 are fixedly installed at the connection between the lower mounting base 4 and the drive shaft 5. Several connecting blocks 7 are opened at the connection between the drive shaft 5 and the lower mounting base 4. Several connecting slots 6 are slidably connected to several connecting blocks 7 respectively. The upper mounting base 3 and the lower mounting base 4 are both made of stainless steel.
[0024] In use, the structural strength of the lower half tooth 2 can be improved by the cooperation of the second arc-shaped reinforcing member 18 and several second reinforcing rods 19. The casting gear can be initially installed on the transmission shaft 5 by the limiting engagement of several connecting slots 6 with several connecting blocks 7.
[0025] In this embodiment, the upper half gear 1 and the lower half gear 2 are securely joined by the limiting engagement of the two dovetail grooves 12 with the two dovetail blocks 13 and the cooperation of the two guide blocks 15 with the two guide grooves 14. Then, the casting gear is initially installed on the drive shaft 5 by the limiting engagement of the several connecting slots 6 with the several connecting blocks 7. The casting gear is then securely installed on the drive shaft 5 by the threaded fixing of the fixing bolts 10 and the second threaded hole 11, thus achieving rapid assembly of the casting gear. By loosening the fixing bolts 10, the casting gear is separated from the second threaded hole 11, and the lower half gear 2 is slid to separate the two dovetail grooves 12 from the two dovetail blocks 13, thereby quickly separating the lower half gear 2 from the upper half gear 1, thus achieving rapid disassembly of the casting gear.
[0026] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.
Claims
1. A cast gear with a quick-assembly structure, comprising an upper tooth (1), characterized in that: The bottom end of the upper half tooth (1) is engaged with the lower half tooth (2). An upper mounting seat (3) is fixedly provided on the inner side of the upper half tooth (1). A lower mounting seat (4) is fixedly provided on the inner side of the lower half tooth (2). A transmission shaft (5) is provided between the upper mounting seat (3) and the lower mounting seat (4). Dovetail grooves (12) are provided on both sides of the connection between the lower half tooth (2) and the upper half tooth (1). Two dovetail blocks (13) are fixedly provided at the connection between the upper half tooth (1) and the lower half tooth (2). The two dovetail grooves (12) are slidably connected to the two dovetail blocks (13) respectively. An installation groove (8) is provided at the top of the upper mounting seat (3). A first threaded hole (9) is provided on the inner side of the installation groove (8). A fixing bolt (10) is provided in the internal thread of the first threaded hole (9).
2. A cast gear with a quick assembly structure according to claim 1, characterized in that: The top end of the drive shaft (5) is provided with a second threaded hole (11), and the fixing bolt (10) is threadedly connected to the second threaded hole (11).
3. A cast gear with a quick assembly structure according to claim 1, characterized in that: Guide blocks (15) are fixedly provided at the bottom of the inner side of the two dovetail grooves (12), and guide grooves (14) are opened at the bottom of the two dovetail blocks (13).
4. A cast gear with a quick assembly structure according to claim 1, characterized in that: A first arc-shaped reinforcing member (16) is fixedly provided on the outer side of the front of the upper half tooth (1). A plurality of first reinforcing rods (17) are fixedly provided between the first arc-shaped reinforcing member (16) and the upper mounting base (3). The plurality of first reinforcing rods (17) are all fixedly connected to the upper half tooth (1).
5. A cast gear with a quick assembly structure according to claim 1, characterized in that: A second arc-shaped reinforcing member (18) is fixedly provided on the outer side of the front of the lower half tooth (2). A number of second reinforcing rods (19) are fixedly provided between the second arc-shaped reinforcing member (18) and the lower mounting base (4). The number of second reinforcing rods (19) are all fixedly connected to the lower half tooth (2).
6. A cast gear with a quick assembly structure according to claim 1, characterized in that: A number of connecting slots (6) are fixedly provided at the connection between the lower mounting base (4) and the drive shaft (5), and a number of connecting blocks (7) are provided at the connection between the drive shaft (5) and the lower mounting base (4). The number of connecting slots (6) are slidably connected to the number of connecting blocks (7).
7. A cast gear with a quick assembly structure according to claim 1, characterized in that: Both the upper mounting base (3) and the lower mounting base (4) are made of stainless steel.