Combined transmission gear

Abstract

The utility model discloses a combined transmission gear, which relates to the technical field of gears and comprises a gear body and a gear splitting and fixing device. The gear splitting and fixing device comprises four threaded sleeves, a sealing ring cover plate and four inside hexagonal bolts, four round holes are circularly formed in the rear end of the gear body at equal intervals, the four threaded sleeves are slidably mounted in the four round holes respectively, the sealing ring cover plate is fixedly connected to the rear ends of the four threaded sleeves, and the sealing ring cover plate is fixedly connected to the rear ends of the four threaded sleeves. The sealing circular ring cover plate is installed at the rear end of the gear body in a sliding mode, the four hexagon socket screws are installed in the gear body in a circular mode at equal intervals, and the four hexagon socket screws are in threaded connection with the interiors of the four threaded sleeves correspondingly. The connecting strength between the gear body and the tooth annular disc can be improved through the four fixing clamping blocks, and when the tooth annular disc is subjected to large acting force, the fixing clamping blocks cannot be broken.

Description

Technical Field

[0001] The utility model relates to the technical field of gears, in particular to a combined transmission gear. Background Art

[0002] Gears refer to mechanical components with gears on the wheel rim that continuously mesh to transmit motion and power. The application of gears in transmission has appeared very early. The principle of gear cutting and special machine tools and tools that use this principle to cut gears have appeared one after another. With the development of production, the smoothness of gear operation has received attention. The existing transmission gears need to be continuously driven, which makes the teeth very easy to wear. Once the teeth are damaged, the entire gear must be replaced. Replacing the entire gear causes great waste and increases the cost of use.

[0003] The currently published patent: CN 215293493 U discloses a transmission gear. The transmission gear benefits from the arrangement of the gear tooth assembly. By screwing a plurality of screws to screw it out from the spoke body, the rim with a plurality of gear tooth bodies constructed on the outer edge surface can be removed from the spoke body and replaced, thereby reducing the use cost.

[0004] Based on the above search, it is found that the above patent has the following problems when in use: the transmission gear can be screwed out of the spoke body by screwing a plurality of screws, and the rim with a plurality of gear teeth bodies constructed on the outer edge surface can be removed from the spoke body and replaced, thereby reducing the cost of use. However, the rim is only fixed by two ear plates when installed, and the thickness of the two ear plates is small and their compressive strength is relatively small. When the rim is subjected to a large force, it is easy to cause the ear plates to break, thereby reducing the stability of the transmission gear. Utility Model Content

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a combined transmission gear which can solve the problem that the wheel rim is fixed only by two ear plates when being installed, and the two ear plates have a small thickness and a relatively small compressive strength. When the wheel rim is subjected to a large force, the ear plates are easily broken, thereby reducing the stability of the transmission gear.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a combined transmission gear, comprising a gear body and a gear splitting and fixing device; the gear splitting and fixing device comprises four threaded sleeves, a sealing ring cover plate and four hexagon socket bolts, the rear end of the gear body is circularly and equidistantly provided with four circular holes, the four threaded sleeves are respectively slidably installed inside the four circular holes, the sealing ring cover plate is fixedly connected to the rear ends of the four threaded sleeves, the sealing ring cover plate is slidably installed at the rear end of the gear body, the four hexagon socket bolts are circularly and equidistantly installed inside the gear body, and the four hexagon socket bolts are respectively threadedly connected inside the four threaded sleeves.

[0007] Preferably, a keyway is provided on the inner surface of the gear body.

[0008] Preferably, the outer surface of the gear body is circular and equidistantly provided with four fixed slots, and the interiors of the four fixed slots are all slidably connected with fixed blocks for positioning.

[0009] Preferably, the surfaces of the four fixed blocks are fixedly connected with a toothed annular disk, and the toothed annular disk is slidably sleeved on the surface of the gear body.

[0010] Preferably, the front end of the gear body is circular and has four circular storage grooves equidistantly disposed thereon.

[0011] Preferably, the nuts at the front ends of the four hexagon socket bolts are slidably disposed inside the four circular storage grooves respectively.

[0012] Compared with the prior art, the beneficial effect of the utility model is that when the combined transmission gear body rotates, the four fixed blocks and the tooth annular disk can be driven to rotate simultaneously through the four fixed slots. Since the thickness of the four fixed blocks is relatively large, the strength of the connection between the gear body and the tooth annular disk can be increased through the four fixed blocks, thereby increasing the compressive strength of the tooth annular disk. When the tooth annular disk is subjected to a large force, the fixed blocks will not break, thereby improving the stability of the transmission gear and extending the service life of the transmission gear. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0014] Figure 1 This is a schematic diagram of the overall structure of a combined transmission gear of the utility model;

[0015] Figure 2 This is a schematic diagram of the front end structure of a combined transmission gear of the utility model;

[0016] Figure 3 It is a schematic diagram of the rear end structure of the gear body of the utility model;

[0017] Figure 4 This is a schematic diagram of the explosive splitting structure of a combined transmission gear of the utility model;

[0018] Figure 5 It is a schematic diagram of the cross-sectional structure of the gear body of the utility model.

[0019] Figure numerals: 1. gear body; 2. keyway; 3. fixed slot; 4. fixed block; 5. tooth ring disk; 6. round hole; 7. threaded sleeve; 8. sealing ring cover; 9. hexagon socket bolt; 10. circular storage groove. DETAILED DESCRIPTION

[0020] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model. In the description of the utility model, it should be understood that the directions or positional relationships indicated by the description of the orientation, such as up, down, front, back, left, right, etc., are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0021] In the description of the present utility model, greater than, less than, and exceeding are understood as not including the number itself, and above, below, and within are understood as including the number itself. If there is a description of first and second, it is only for the purpose of distinguishing technical features, and it cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features or implicitly indicating the order of the indicated technical features. In the description of the present utility model, unless otherwise clearly defined, the terms such as setting, installing, and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above terms in the present utility model in combination with the specific content of the technical solution.

[0022] See also Figure 1-5 The utility model provides a technical solution: a combined transmission gear, including a gear body 1 and a gear splitting and fixing device, a keyway 2 is provided on the inner surface of the gear body 1, and four fixed card slots 3 are provided on the outer surface of the gear body 1 in a circular shape and at equal intervals, and the interiors of the four fixed card slots 3 are slidably connected with fixed card blocks 4 for positioning, and the surfaces of the four fixed card blocks 4 are fixedly connected with toothed annular disks 5, and the toothed annular disks 5 are slidably sleeved on the surface of the gear body 1.

[0023] When the staff is assembling the transmission gear, the staff picks up the gear body 1 and places it on the front end of the tooth ring disk 5. Then the staff slides the gear body 1 from front to back and makes the four fixed blocks 4 slide into the four fixed slots 3 respectively, and then the tooth ring disk 5 and the gear body 1 can be fixedly installed together through the clamping action between the four fixed slots 3 and the four fixed blocks 4. When the gear body 1 rotates, the four fixed slots 3 can drive the four fixed blocks 4 and the tooth ring disk 5 to rotate simultaneously. Since the thickness of the four fixed blocks 4 is large, the strength of the connection between the gear body 1 and the tooth ring disk 5 can be increased by the four fixed blocks 4, thereby increasing the compressive strength of the tooth ring disk 5. When the tooth ring disk 5 is subjected to a large force, the fixed blocks 4 will not break, thereby improving the stability of the transmission gear and extending the service life of the transmission gear.

[0024] The gear splitting and fixing device includes four threaded sleeves 7, a sealing ring cover plate 8 and four hexagon socket bolts 9. The rear end of the gear body 1 is circularly and equidistantly provided with four circular holes 6. The four threaded sleeves 7 are respectively slidably installed in the four circular holes 6. The sealing ring cover plate 8 is fixedly connected to the rear ends of the four threaded sleeves 7. The sealing ring cover plate 8 is slidably installed in the rear end of the gear body 1. The four hexagon socket bolts 9 are circularly and equidistantly installed in the gear body 1. The four hexagon socket bolts 9 are respectively threadedly connected to the inside of the four threaded sleeves 7. The front end of the gear body 1 is circularly and equidistantly provided with four circular storage grooves 10. The nuts at the front ends of the four hexagon socket bolts 9 are respectively slidably arranged in the inside of the four circular storage grooves 10.

[0025] After the staff has installed the toothed annular disk 5, the sealing ring cover plate 8 can be slid from the back to the front side. The sealing ring cover plate 8 slides and drives the four threaded sleeves 7 to slide into the four circular holes 6, and then the four fixed blocks 4 are fixed and limited by the sealing ring cover plate 8 to prevent the four fixed blocks 4 from moving forward and backward, thereby preventing the toothed annular disk 5 from moving forward and backward. Then the staff puts the four hexagon socket bolts 9 into the four circular storage grooves 10 respectively, and rotates the hexagon socket bolts 9 with a wrench to make them enter the threaded sleeves 7. The staff can fix the four threaded sleeves 7 in the four circular holes 6 in the same way, and then fix the sealing ring cover plate 8 on the rear side of the gear body 1 to block and limit the four fixed blocks 4. After the hexagon socket bolts 9 are rotated into the threaded sleeves 7, the nuts on the surface of the hexagon socket bolts 9 can completely enter the circular storage grooves 10 and be hidden, maintaining the flatness of the front end surface of the gear body 1, so that the transmission gear is as similar as possible to the original gear, which is convenient for the staff to install the transmission gear later.

[0026] Working principle: For the combined transmission gear, the staff slides the gear body 1 from the front to the back, and makes the four fixed blocks 4 slide into the four fixed slots 3 respectively, and then the tooth ring disk 5 and the gear body 1 can be fixed together through the clamping action between the four fixed slots 3 and the four fixed blocks 4. Since the thickness of the four fixed blocks 4 is relatively large, the four fixed blocks 4 can increase the strength of the connection between the gear body 1 and the tooth ring disk 5. When the tooth ring disk 5 is subjected to a large force, the fixed blocks 4 will not break, and the sealing is slid from the back to the front. The circular ring cover 8 and the sealing circular ring cover 8 slide and drive the four threaded sleeves 7 to slide into the inside of the four circular holes 6, and then the sealing circular ring cover 8 can prevent the tooth ring disk 5 from moving forward and backward. Then the staff rotates the hexagon socket bolt 9 with a wrench to make it enter the inside of the threaded sleeve 7, and fixes the sealing circular ring cover 8 on the rear side of the gear body 1 to block and limit the four fixed blocks 4, and the nut on the surface of the hexagon socket bolt 9 can be completely hidden in the circular storage groove 10, so as to maintain the flatness of the front end surface of the gear body 1, which is convenient for the staff to install the transmission gear later.

[0027] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A combined transmission gear, characterized in that: include: A gear body (1) and a gear splitting fixture; The gear splitting and fixing device comprises four threaded sleeves (7), a sealing ring cover plate (8) and four hexagon socket bolts (9); the rear end of the gear body (1) is provided with four circular holes (6) at equal intervals in a circular shape; the four threaded sleeves (7) are respectively slidably mounted inside the four circular holes (6); the sealing ring cover plate (8) is fixedly connected to the rear ends of the four threaded sleeves (7); the sealing ring cover plate (8) is slidably mounted on the rear end of the gear body (1); the four hexagon socket bolts (9) are equidistantly mounted inside the gear body (1) in a circular shape; and the four hexagon socket bolts (9) are respectively threadedly connected inside the four threaded sleeves (7).

2. A combined transmission gear according to claim 1, characterized in that: The inner surface of the gear body (1) is provided with a keyway (2).

3. A combined transmission gear according to claim 1 or 2, characterized in that: The outer surface of the gear body (1) is circular and has four fixed slots (3) equidistantly formed thereon, and the interiors of the four fixed slots (3) are all slidably connected with fixed blocks (4) for positioning.

4. A combined transmission gear according to claim 3, characterized in that: The surfaces of the four fixed clamping blocks (4) are fixedly connected with a toothed annular disk (5), and the toothed annular disk (5) is slidably sleeved on the surface of the gear body (1).

5. The combined transmission gear according to claim 1, characterized in that: The front end of the gear body (1) is circular and has four circular storage grooves (10) equidistantly disposed thereon.

6. A combined transmission gear according to claim 5, characterized in that: The nuts at the front ends of the four hexagon socket bolts (9) are slidably disposed inside the four circular storage grooves (10) respectively.

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