High-strength G-level heavy-load shifting gear

Abstract

The utility model discloses a high-strength G-level heavy-load gear-shifting gear, which relates to the technical field of tricycle gear-shifting gears, and has the technical scheme that the high-strength G-level heavy-load gear-shifting gear comprises a gear-shifting gear mechanism formed by meshing a plurality of groups of gears, bearings for supporting the gears are mounted on the plurality of groups of gears, and each of the plurality of groups of gears consists of a gear sleeve and a gear body, the gear sleeve is nested on the gear body, and the gear sleeve and the gear body are of a detachable structure. According to the gear-shifting gear, the combined structure of the gear sleeve and the gear body is adopted, the corresponding gear sleeve can be replaced according to the damage degree of the gear sleeve and the application condition of the gear, the gear does not need to be integrally replaced, the replacement cost is saved, meanwhile, the functionality of the gear is effectively enhanced, and the application range of the gear is effectively widened. Meanwhile, the tooth marks are of a rotation angle structure, the contact area between the gears during meshing can be effectively increased, meanwhile, the overlap ratio between the tooth marks is increased, noise is effectively reduced, and meanwhile the torque generated by gear transmission is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gear shifting for tricycles, and more specifically, to a high-strength G-class heavy-load gear shifting gear. Background Art

[0002] Electric tricycles are a means of transportation for people to carry people and goods on a daily basis. The electric system mainly provides power to the motor, and the motor drives the drive system to achieve vehicle travel. The drive system includes a speed change mechanism, which mainly changes the vehicle speed by switching between the main gear and multiple groups of speed gears of different sizes on the speed change mechanism. Therefore, the speed change mechanism is the core component of vehicle speed regulation.

[0003] The speed change mechanism is mainly composed of multiple sets of gears and matching components that mesh with each other to form an integrated transmission system. The tooth marks of traditional gear bodies are mostly vertical structures between the gear bodies. This type of gear structure is prone to generate loud noise during the meshing transmission process. At the same time, the traditional gear body and the tooth marks are an integrated molding structure. When the tooth marks are severely worn, the entire gear needs to be replaced, resulting in high replacement costs. At the same time, the one-piece structure of gears also limits the application range of gears due to structural limitations.

[0004] Therefore, in order to solve the above technical problems, the present application proposes a high-strength G-class heavy-duty shift gear. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a high-strength G-class heavy-duty shift gear.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-strength G-class heavy-duty gearshift, comprising a gearshift mechanism composed of a plurality of gears meshing, bearings for supporting the gears being mounted on the plurality of gears, the plurality of gears being composed of a gear sleeve and a gear body, the gear sleeve being nested in the gear body and the two being in a detachable structure; wherein the inner wall of the gear sleeve is provided with a plurality of locking holes a for fixing with the gear body; the gear body comprises an upper cover plate, an inner disc seat, an outer disc seat and a lower cover plate, the inner disc seat Located at the center of the outer disc seat, the inner disc seat and the outer disc seat are integrally connected by multiple groups of connecting angle plates distributed along the circumference, and the inner disc seat and the outer disc seat are also provided with four groups of locking connectors for disassembling and assembling the gear sleeve. The four groups of locking connectors are evenly distributed along the circumference and installed in the gaps between the connecting angle plates. The upper cover plate and the lower cover plate are the same in size and thickness. The upper cover plate and the lower cover plate are respectively embedded in the two end surfaces of the outer disc seat, and are locked together by screws that penetrate the outer disc seat and the locking connectors in sequence.

[0007] Preferably, the inner disc seat and the outer disc seat have the same height, the height of the gear sleeve is greater than that of the outer disc seat, and an equal distance is provided between the two ends of the outer disc seat and the two ends of the gear sleeve, and the fitting gap matches the thickness of the upper cover plate.

[0008] Preferably, a plurality of groups of through-type locking holes d are circumferentially arranged on the two end surfaces of the outer disc seat, a plurality of groups of locking holes e that are through-connected with the locking holes d are arranged on the inner wall of the outer disc seat, the locking holes e are the same size as the locking holes a and correspond in position, and a plurality of groups of locking holes b that are the same size as the locking holes e and correspond in position are arranged on the outer wall of the inner disc seat.

[0009] Preferably, the bottom end surface of the upper cover plate is circumferentially distributed with plug rods of an integrated structure, the distribution number of the plug rods is the same as the locking holes d, the plug rods pass through the locking holes d on one end surface of the outer disc seat to the other end surface of the outer disc seat, and the plug rods are in a central hole structure and a threaded groove is arranged inside.

[0010] Preferably, the lower cover plate is provided with locking holes f distributed in a circle, the locking holes f correspond to the positions of the insertion rods, the insertion rods are engaged and connected with the locking holes f, and the insertion rods are locked together with the lower cover plate by screws whose fixed end diameter is larger than the diameter of the locking holes f.

[0011] Preferably, the locking connector includes a connecting rod and an adjusting sleeve, the adjusting sleeve and the connecting rod are an integrated structure and are arranged in the middle position of the connecting rod, the connecting rod at one end of the adjusting sleeve is provided with a thread connected to the locking hole b, the connecting rod at the other end of the adjusting sleeve is provided with a thread connected to the locking hole e and the locking hole a, and a locking hole c arranged in the middle for penetrating connection with the insertion rod.

[0012] Preferably, the meshing end of the gear sleeve adopts a wide-body helical angle structure.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The shift gear in the utility model adopts a combined structure of a gear sleeve and a gear body. The corresponding gear sleeve can be replaced according to the degree of damage of the gear sleeve and the application of the gear. There is no need to replace the gear as a whole, which saves replacement costs and effectively enhances the functionality and application range of the gear. At the same time, the installation form of the gear sleeve and the gear body adopts an overall progressive locking structure, which ensures the firmness of the gear sleeve installation on the one hand, and the stability between the gear sleeve and the gear body during the operation of the gear on the other hand.

[0015] 2. The tooth marks on this gear sleeve adopt a rotation angle structure. When running with the corresponding bearing, it can effectively increase the contact area between the gears when they are meshing, and also increase the overlap between the tooth marks, effectively reducing the noise while increasing the torque generated by the gear transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0017] Figure 1 This is the overall structure diagram of the shift gear mechanism of the utility model;

[0018] Figure 2 This is the overall appearance of the gear of the utility model;

[0019] Figure 3 This is the overall internal structure diagram of the gear of the utility model;

[0020] Figure 4 This is a disassembly diagram of the upper and lower cover plates of the gear of the utility model;

[0021] Figure 5 This is the overall disassembly diagram of the internal structure of the gear of the utility model;

[0022] Figure 6 This is a structural diagram of the locking connector of the utility model;

[0023] Figure 7 For this utility model Figure 4 Enlarged view of point A in .

[0024] 1. Gear sleeve; 101. Locking hole a; 2. Bearing; 3. Upper cover; 301. Insert rod; 4. Inner disc seat; 401. Locking hole b; 5. Connecting angle plate; 6. Locking connector; 601. Connecting rod; 602. Adjusting sleeve; 603. Locking hole c; 7. Outer disc seat; 701. Locking hole d; 702. Locking hole e; 8. Lower cover; 801. Locking hole f. DETAILED DESCRIPTION

[0025] like Figure 1-7 As shown, the utility model provides a high-strength G-class heavy-duty gearshift, including a gearshift mechanism composed of multiple sets of meshing gears, bearings 2 for supporting the gears are installed on the multiple sets of gears, and the multiple sets of gears are composed of a gear sleeve 1 and a gear body, and the gear sleeve 1 is nested on the gear body and the two are in a detachable structure;

[0026] The gear body comprises an upper cover plate 3, an inner disc seat 4, an outer disc seat 7 and a lower cover plate 8. The inner disc seat 4 is located at the center of the outer disc seat 7. The inner disc seat 4 and the outer disc seat 7 are integrally connected by a plurality of groups of connecting angle plates 5 distributed along the circumference. The inner disc seat 4 and the outer disc seat 7 are also provided with four groups of locking connectors 6 for disassembling and assembling the gear sleeve 1. The four groups of locking connectors 6 are evenly distributed along the circumference and installed in the gap between the connecting angle plates 5. The upper cover plate 3 and the lower cover plate 8 are of the same size and thickness. The upper cover plate 3 and the lower cover plate 8 are respectively embedded in the two end surfaces of the outer disc seat 7, and screws are sequentially passed through the outer disc seat 7 and the locking connectors 6 for common locking.

[0027] At the same time, the inner wall of the gear sleeve 1 is provided with a plurality of locking holes a101 for fixing with the gear body;

[0028] In summary, the gear as a whole is composed of two parts: a gear sleeve 1 and a gear body, and the two parts adopt a nested splicing combination structure. The installation process includes: nesting the gear sleeve 1 on the outer disc seat 7 of the gear body, taking the locking hole a101 and the locking hole e702 as references. After the engagement, manually rotate the multiple sets of locking connectors 6 through the adjustment sleeve 602 to drive the connecting rod 601 to be threaded, so that it passes through the locking hole e702 and is fixed with the locking hole a101. At this time, the locking hole c603 on the connecting rod 601 will correspond to the locking hole d701 connected to the two ends of the outer disc seat 7. The upper cover plate 3 is installed, and the insertion rod 301 distributed on the bottom end surface of the upper cover plate 3 is inserted into the locking hole d701 and passes through the locking hole c603 to the other end. Finally, the locking hole f801 on the lower cover plate 8 is engaged with the insertion rod 301, and it is fixed by screws.

[0029] In order to enhance the firmness of the connection between the gear body and the gear sleeve 1 and to provide protection for the two sets of disc seats, Figure 3 , Figure 4 and Figure 5 As shown, under this premise, first ensure the matching of the interlocking structure of the inner disc seat 4 and the outer disc seat 7, the inner disc seat 4 and the outer disc seat 7 have the same height, the height of the gear sleeve 1 is greater than the outer disc seat 7, and the two ends of the outer disc seat 7 to the two ends of the gear sleeve 1 are provided with an interlocking gap of the same distance, and the interlocking gap is consistent with the thickness of the upper cover plate 3;

[0030] Furthermore, in order to achieve that the height of the two sets of cover plates are flush with the height of the gear sleeve 1 after the two sets of cover plates are embedded, and to ensure the integrity of the gear structure, it is necessary to limit the height of the gear sleeve 1 and the two sets of disc seats, and by dividing the height difference into two halves as the thickness dimension of the cover plate, after the cover plates are embedded, the gear can be integrated as a whole;

[0031] In order to improve the stable and firm locking effect between the gear body and the gear sleeve 1 and the convenience of disassembly and assembly between the two, as Figure 3 , Figure 5 and Figure 6 As shown, multiple groups of through-type locking holes d701 are arranged on the two end surfaces of the outer disc seat 7 according to the circumference, multiple groups of locking holes e702 are arranged on the inner wall of the outer disc seat 7 and are through-connected with the locking holes d701, and the locking holes e702 are the same size and have corresponding positions as the locking holes a101, and multiple groups of locking holes b401 are arranged on the outer wall of the inner disc seat 4 and have the same size and have corresponding positions as the locking holes e702;

[0032] Further explanation: although the outer disc seat 7 and the inner disc seat 4 are fixedly connected by multiple sets of connecting angle plates 5, in order to install the locking connector 6 for connecting the gear sleeve 1 and the gear body between the connecting angle plates 5, gaps for installing the locking connector 6 are set between the multiple sets of connecting angle plates 5. The locking holes e702 connected transversely on the outer disc seat 7 are mainly used for the through-type connection of the locking connector 6 between the inner disc seat 4, the outer disc seat 7 and the gear sleeve 1, so as to achieve the purpose of locking the three together, and the locking holes d701 connected longitudinally are mainly used for secondary locking and fixing on the basis of locking the three by the locking connector 6, so as to improve the firmness and stability of the overall installation connection.

[0033] In order to achieve the above-mentioned secondary locking effect, Figure 4 and Figure 7 As shown, the bottom end surface of the upper cover plate 3 is circumferentially distributed with plug rods 301 of an integrated structure, and the number of the plug rods 301 is the same as the locking holes d701. The plug rods 301 pass through the locking holes d701 on one end surface of the outer disc seat 7 to the other end surface of the outer disc seat 7. The plug rods 301 are in a central hole structure and a threaded groove is provided inside.

[0034] For secondary locking, the insertion rod 301 provided on the upper cover plate 3 is used to perform through-type locking of the locking connector 6 after the locking connector 6 is locked, thereby effectively limiting the position of the locking connector 6, further improving the effect of the installation connection between the gear sleeve 1 and the gear body;

[0035] After the secondary locking, the insertion rod 301 needs to be finally locked. Figure 4 As shown, specifically, the lower cover plate 8 is provided with locking holes f801 distributed in a circumference, the locking holes f801 correspond to the positions of the insertion rods 301, the insertion rods 301 are engaged and connected with the locking holes f801, and the insertion rods 301 and the lower cover plate 8 are locked together by screws whose fixed end diameter is larger than the diameter of the locking holes f801, and the insertion rods 301 are inserted into the locking holes f801 corresponding to the lower cover plate 8 after the outer disc seat 7 and the locking connector 6 are penetrated together, and the upper cover plate 3 and the lower cover plate 8 are locked and fixed together by screws whose fixed ends are larger than the locking holes f801;

[0036] In order to facilitate the disassembly and assembly of the gear sleeve 1 and the gear body, Figure 5 and Figure 6 As shown, the locking connector 6 includes a connecting rod 601 and an adjusting sleeve 602. The adjusting sleeve 602 and the connecting rod 601 are in an integrated structure and are arranged in the middle position of the connecting rod 601. The connecting rod 601 at one end of the adjusting sleeve 602 is provided with a thread connected to the locking hole b401, and the connecting rod 601 at the other end of the adjusting sleeve 602 is provided with a thread connected to the locking hole e702 and the locking hole a101 and a locking hole c603 arranged in the middle for penetrating and connecting with the insertion rod 301.

[0037] Furthermore, due to the limitation of the size of the gear, the locking connector 6 is manually operated, and the adjusting sleeve 602 drives the connecting rod 601 to rotate as a whole. Under the transmission of the thread, the threaded connecting rod 601 can be locked and separated with the gear sleeve 1 and the outer disc seat 7. After the locking connector 6 locks the gear sleeve 1, the locking hole c603 on the rod body will correspond to the locking hole d701, so as to facilitate the common penetration of the insertion rod 301.

[0038] It should be noted that the connecting rod 601 with the opposite end having the locking hole c603 will always maintain a connection relationship with the locking hole b401 of the inner disc seat 4 when the gear sleeve 1 is locked and separated;

[0039] In order to improve the overall use effect of the gear, such as Figure 1 As shown, the meshing end of the gear sleeve 1 adopts a wide-body helical angle structure;

[0040] Specifically, in order to achieve the above effects, the reference setting for the gear ratio is 1:11.6 times for fast gear and 1:25.7 times for slow gear. At the same time, the gear tooth width of the input stage gear is increased to 22mm and the module is 1.75; the output stage gear adopts a module of 2.75 and the tooth width is thickened.

[0041] The above are only preferred embodiments of the present invention and are not intended to limit the present invention in any form. Any ordinary technician in the industry can smoothly implement the present invention as shown in the drawings and above. However, any equivalent changes, modifications and evolutions made by technicians familiar with the profession without departing from the scope of the technical solution of the present invention using the technical content disclosed above are all equivalent embodiments of the present invention. At the same time, any equivalent changes, modifications and evolutions made to the above embodiments based on the essential technology of the present invention are still within the protection scope of the technical solution of the present invention.

Claims

1. A high-strength G-class heavy-duty gearshift gear, comprising a gearshift gear mechanism composed of a plurality of gear meshing groups, characterized in that: The plurality of gear groups are provided with bearings (2) for supporting the gears, and the plurality of gear groups are composed of a gear sleeve (1) and a gear body, wherein the gear sleeve (1) is nested in the gear body and the two are in a detachable structure; Wherein, the inner wall of the gear sleeve (1) is provided with a plurality of locking holes a (101) for fixing with the gear body; The gear body comprises an upper cover plate (3), an inner disc seat (4), an outer disc seat (7) and a lower cover plate (8); the inner disc seat (4) is located at the center of the outer disc seat (7); the inner disc seat (4) and the outer disc seat (7) are integrally connected via a plurality of groups of connecting angle plates (5) distributed along a circumference; and the inner disc seat (4) and the outer disc seat (7) are further provided with four groups of locking connectors (6) for disassembling and assembling the gear sleeve (1); the four groups of locking connectors (6) are evenly distributed along a circumference and installed in the gaps between the connecting angle plates (5); the upper cover plate (3) and the lower cover plate (8) are of the same size and thickness; the upper cover plate (3) and the lower cover plate (8) are respectively embedded in the two end surfaces of the outer disc seat (7) and are locked together by screws that penetrate the outer disc seat (7) and the locking connectors (6) in sequence.

2. The high-strength G-class heavy-duty shift gear according to claim 1, characterized in that: The inner disc seat (4) and the outer disc seat (7) have the same height, the gear sleeve (1) is higher than the outer disc seat (7), and a fitting gap with the same distance is provided between the two ends of the outer disc seat (7) and the two ends of the gear sleeve (1), and the fitting gap is consistent with the thickness of the upper cover plate (3).

3. The high-strength G-class heavy-duty shift gear according to claim 1, characterized in that: The two end surfaces of the outer disc seat (7) are provided with a plurality of groups of through-type locking holes d (701) in a circumferential manner, the inner wall of the outer disc seat (7) is provided with a plurality of groups of locking holes e (702) through-connected with the locking holes d (701), the locking holes e (702) are of the same size and corresponding positions as the locking holes a (101), and the outer wall of the inner disc seat (4) is provided with a plurality of groups of locking holes b (401) of the same size and corresponding positions as the locking holes e (702).

4. The high-strength G-class heavy-duty shift gear according to claim 3, characterized in that: The bottom end surface of the upper cover plate (3) is provided with plug rods (301) in an integrated structure distributed in a circumferential manner, the number of the plug rods (301) being the same as the locking holes d (701), the plug rods (301) passing through the locking holes d (701) on one end surface of the outer disc seat (7) to the other end surface of the outer disc seat (7), the plug rods (301) being in a central hole structure and having a threaded groove arranged therein.

5. The high-strength G-class heavy-duty shift gear according to claim 4, characterized in that: The lower cover plate (8) is provided with locking holes f (801) distributed in a circumference, the locking holes f (801) correspond to the positions of the insertion rods (301), the insertion rods (301) are engaged with the locking holes f (801), and the insertion rods (301) and the lower cover plate (8) are locked together by screws whose fixed end diameter is larger than the diameter of the locking holes f (801).

6. The high-strength G-class heavy-duty shift gear according to claim 3, characterized in that: The locking connector (6) comprises a connecting rod (601) and an adjusting sleeve (602). The adjusting sleeve (602) and the connecting rod (601) are of an integrated structure and are arranged in the middle of the connecting rod (601). The connecting rod (601) at one end of the adjusting sleeve (602) is provided with a thread connected to the locking hole b (401). The connecting rod (601) at the other end of the adjusting sleeve (602) is provided with a thread connected to the locking hole e (702) and the locking hole a (101) and a locking hole c (603) arranged in the middle for penetrating and connecting with the insertion rod (301).

7. The high-strength G-class heavy-duty shift gear according to claim 1, characterized in that: The meshing end on the gear sleeve (1) adopts a wide-body helical angle structure.

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