Double-tooth synchronous pulley for precise transmission system

Abstract

The utility model provides a double-tooth synchronous belt wheel for a precision transmission system, which comprises a first belt wheel for the precision transmission system, a spacing adjusting assembly comprises limiting frames uniformly distributed on one side of the first belt wheel, one side of each limiting frame is connected with a sliding frame in a sliding manner, and a second belt wheel is fixedly connected to one side of the sliding frame. One side of the first belt wheel is rotationally connected with an adjusting threaded rod which is in threaded connection with the second belt wheel, and one end of the adjusting threaded rod is fixedly connected with a hand wheel. A distance adjusting assembly is arranged, when the distance between a first belt wheel and a second belt wheel needs to be adjusted, a hand wheel is rotated to drive an adjusting threaded rod to rotate, the second belt wheel moves along a limiting frame under rotation of the adjusting threaded rod, and the stability of the second belt wheel during movement is guaranteed through mutual cooperation of the limiting frame and a sliding frame; and when the distance between the first belt wheel and the second belt wheel is adjusted, the belt does not need to be detached, adjustment is convenient and fast, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of double-tooth synchronous pulleys, in particular to a double-tooth synchronous pulley for a precision transmission system. Background Art

[0002] A synchronous pulley drive consists of a closed, endless belt with evenly spaced teeth on its inner circumference, and a corresponding pulley. During movement, the belt teeth mesh with the teeth of the pulley to transmit motion and power. This is a meshing drive, combining characteristics of gear drives, chain drives, and flat belt drives.

[0003] The Chinese patent application number CN202223038390.0 discloses a double-toothed synchronous pulley, which belongs to the field of mechanical technology. It solves the problem of high cost of processing pulleys of different specifications. The double-toothed synchronous pulley includes a pulley body, which is composed of a main body in the shape of an annular ring and a circle of gear teeth formed on the outside of the main body. The pulley body has two pulley bodies and is arranged side by side along the axial direction of the pulley body. A circular ring is clamped between the two pulley bodies. The ring is coaxial with the pulley body and the outer diameter of the ring is larger than the outer diameter of the pulley body. The main body and the ring are respectively axially penetrated by a circle of connecting holes and a circle of clearance holes. The number of clearance holes and the connection holes on the same main body are the same and the positions correspond one to one. A straight tube body is inserted into each clearance hole to connect the two pulley bodies. The front and rear ends of the straight tube body are respectively located in the corresponding two connecting holes. The inner side surfaces of the connecting holes and the clearance holes are in contact with the outer side surfaces of the corresponding straight tube body. The above device can reduce the difficulty and cost of processing products of different specifications.

[0004] However, there are still the following defects:

[0005] Replacing the retaining ring to change the distance between the two pulley bodies is a relatively troublesome operation, and when replacing the retaining ring, the belt needs to be removed and installed, which is slow. Utility Model Content

[0006] The utility model aims to solve the problems raised in the background technology and provides a double-tooth synchronous pulley for a precision transmission system.

[0007] The specific technical solutions are as follows:

[0008] A double-toothed synchronous pulley for a precision transmission system, comprising: a first pulley for the precision transmission system, a second pulley provided on one side of the first pulley, retaining rings fixedly connected to surfaces of the first pulley and the second pulley, and a spacing adjustment component provided on the first pulley;

[0009] The spacing adjustment assembly includes a limit frame evenly distributed on one side of the first pulley, one side of the limit frame is slidably connected to the sliding frame, the second pulley is fixedly connected to one side of the sliding frame, one side of the first pulley is rotatably connected to an adjusting threaded rod, the adjusting threaded rod is threadedly connected to the second pulley, and one end of the adjusting threaded rod is fixedly connected to a handwheel.

[0010] The above-mentioned double-tooth synchronous pulley for the precision transmission system, wherein: the handwheel surface is provided with a socket, the second pulley side is evenly provided with threaded holes, the threaded hole is provided with an insertion rod, the insertion rod surface is provided with an external thread matching the thread of the threaded hole, and the insertion rod is inserted into the socket.

[0011] The above-mentioned double-tooth synchronous pulley for a precision transmission system, wherein: one end of the insertion rod is fixedly connected to a rotating block, and the insertion rod has the same diameter as the insertion hole.

[0012] The above-mentioned double-tooth synchronous pulley for the precision transmission system, wherein: a connecting component is provided on the first pulley, and the connecting component includes a fixing seat fixedly connected to one side of the first pulley, and a connecting shaft is inserted into the fixing seat.

[0013] The above-mentioned double-tooth synchronous pulley for a precision transmission system, wherein: limiting grooves are evenly arranged in the fixing seat, the surface of the connecting shaft is evenly fixedly connected to the limiting blocks, and the limiting blocks have the same size as the limiting grooves.

[0014] The above-mentioned double-tooth synchronous pulley for the precision transmission system, wherein: the limiting block surface is provided with limiting holes, the fixing seat surface is also evenly provided with limiting holes, and the limiting holes are internally threaded with connecting bolts.

[0015] The above-mentioned double-tooth synchronous pulley for the precision transmission system, wherein: the limiting frame and the sliding frame are both arranged in a square shape, and the adjusting threaded rod is arranged in a central position on one side of the first pulley.

[0016] The utility model has the following beneficial effects:

[0017] A spacing adjustment component is provided. When the spacing between the first pulley and the second pulley needs to be adjusted, the hand wheel is rotated to drive the adjusting threaded rod to rotate. When the adjusting threaded rod is rotated, the second pulley moves along the limit frame. The limit frame and the sliding frame cooperate with each other to ensure the stability of the second pulley during movement, thereby changing the spacing between the first pulley and the second pulley. When adjusting the spacing between the first pulley and the second pulley, there is no need to remove the belt, which is convenient for adjustment and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 A schematic structural diagram of a double-toothed synchronous pulley for a precision transmission system provided by an embodiment of the present utility model;

[0019] Figure 2 A schematic structural diagram of a limiting frame and a sliding frame of a double-toothed synchronous pulley for a precision transmission system provided by an embodiment of the utility model;

[0020] Figure 3 A schematic structural diagram of a connecting assembly in a double-toothed synchronous pulley for a precision transmission system provided by an embodiment of the present utility model;

[0021] Figure 4 This is a schematic structural diagram of an adjustment component in a double-toothed synchronous pulley for a precision transmission system provided by an embodiment of the utility model.

[0022] In the attached figure:

[0023] 1. First pulley; 2. Second pulley; 3. Retaining ring; 4. Connecting assembly; 401. Fixed seat; 402. Limiting groove; 403. Connecting shaft; 404. Limiting block; 405. Limiting hole; 406. Connecting bolt; 5. Spacing adjustment assembly; 501. Limiting frame; 502. Sliding frame; 503. Adjusting threaded rod; 504. Handwheel; 505. Socket; 506. Threaded hole; 507. Insert rod; 508. Rotating block; 509. External thread. DETAILED DESCRIPTION

[0024] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0025] Among them, the drawings are only used for illustrative purposes and represent only schematic diagrams rather than actual pictures, and should not be understood as limiting this patent; in order to better illustrate the embodiments of the utility model, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of the actual product; for those skilled in the art, it is understandable that some well-known structures and their descriptions in the drawings may be omitted.

[0026] The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if the terms "upper", "lower", "left", "right", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the drawings, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as limiting this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0027] In the description of this utility model, unless otherwise expressly specified or limited, when the term "connection" or the like appears to indicate a connection relationship between components, such term should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be internal communication between two components or an interaction relationship between two components. For those skilled in the art, the specific meanings of the above terms in this utility model can be understood according to the specific circumstances.

[0028] Example

[0029] This embodiment provides a double-toothed synchronous pulley for a precision transmission system, such as Figures 1-4 As shown, it includes: a first pulley 1 for a precision transmission system, a second pulley 2 is provided on one side of the first pulley 1, a retaining ring 3 is fixedly connected to the surface of the first pulley 1 and the second pulley 2, and a spacing adjustment component 5 is provided on the first pulley 1;

[0030] The spacing adjustment assembly 5 includes a limit frame 501 evenly distributed on one side of the first pulley 1, a sliding frame 502 is slidably connected to one side of the limit frame 501, the second pulley 2 is fixedly connected to one side of the sliding frame 502, and an adjusting threaded rod 503 is rotatably connected to one side of the first pulley 1, the adjusting threaded rod 503 is threadedly connected to the second pulley 2, and one end of the adjusting threaded rod 503 is fixedly connected to a handwheel 504.

[0031] A double-toothed synchronous pulley for a precision transmission system using the above-mentioned technical solution is provided with a spacing adjustment component 5. When the spacing between the first pulley 1 and the second pulley 2 needs to be adjusted, the rotating handwheel 504 drives the adjusting threaded rod 503 to rotate. When the adjusting threaded rod 503 rotates, the second pulley 2 moves along the limit frame 501. The limit frame 501 and the sliding frame 502 cooperate with each other to ensure the stability of the second pulley 2 during movement, thereby changing the spacing between the first pulley 1 and the second pulley 2. When adjusting the spacing between the first pulley 1 and the second pulley 2, there is no need to remove the belt, and the adjustment is convenient and easy to use.

[0032] In order to prevent unnecessary rotation of the handwheel 504, a socket 505 is provided on the surface of the handwheel 504, and threaded holes 506 are evenly provided on one side of the second pulley 2. A rod 507 is provided on the threaded hole 506, and an external thread 509 is provided on the surface of the rod 507 to match the thread of the threaded hole 506. The rod 507 is inserted into the socket 505. The rod 507 is inserted into the socket 505 and rotated to lock the external thread 509 and the threaded hole 506 with each other. The action of the rod 507 prevents unnecessary rotation of the handwheel 504 and prevents the distance between the first pulley 1 and the second pulley 2 from changing during use.

[0033] In order to facilitate the rotation of the rod 507, a rotating block 508 is fixedly connected to one end of the rod 507. The rod 507 has the same diameter as the socket 505. Rotating the rotating block 508 drives the rod 507 to rotate, so as to quickly lock the external thread 509 with the threaded hole 506.

[0034] In order to facilitate the installation and fixation of the first pulley 1, a connecting assembly 4 is provided on the first pulley 1, and the connecting assembly 4 includes a fixing seat 401 fixedly connected to one side of the first pulley 1, and a connecting shaft 403 is inserted into the fixing seat 401. The connecting shaft 403 rotates, driving the fixing seat 401 and the first pulley 1 to rotate.

[0035] To better connect the connecting shaft 403 and the fixing base 401, limit slots 402 are evenly distributed in the fixing base 401. Limit blocks 404 are evenly fixed to the surface of the connecting shaft 403. The limit blocks 404 are the same size as the limit slots 402. The limit blocks 404 are inserted into the limit slots 402 to prevent the connecting shaft 403 and the fixing base 401 from slipping.

[0036] To better secure the connecting shaft 403 to the fixing base 401, limiting holes 405 are formed on the surface of the limiting block 404, and limiting holes 405 are also uniformly formed on the surface of the fixing base 401. Connecting bolts 406 are threadedly connected to the limiting holes 405. The connecting bolts 406 are threadedly connected to the limiting holes 405, thereby connecting the connecting shaft 403 to the fixing base 401, facilitating quick installation and removal of the connecting shaft 403 and the fixing base 401.

[0037] To ensure the stability of the second pulley 2 during movement, the limiting frame 501 and the sliding frame 502 are both arranged in a square shape, and the adjusting threaded rod 503 is set in the center of one side of the first pulley 1. By adjusting the threaded rod 503 to drive the second pulley 2 to move, the distance between the first pulley 1 and the second pulley 2 can be changed, which facilitates fine adjustment and is suitable for precision transmission systems.

[0038] In summary, the double-tooth synchronous pulley for a precision transmission system provided in this embodiment has the following advantages: a spacing adjustment component 5 is provided, and when the spacing between the first pulley 1 and the second pulley 2 needs to be adjusted, the rotating handwheel 504 drives the adjusting threaded rod 503 to rotate, and the rotation of the adjusting threaded rod 503 causes the second pulley 2 to move along the limit frame 501, and the stability of the second pulley 2 during movement is ensured by the cooperation between the limit frame 501 and the sliding frame 502, thereby changing the spacing between the first pulley 1 and the second pulley 2. When adjusting the spacing between the first pulley 1 and the second pulley 2, there is no need to remove the belt, and the adjustment is convenient and easy to use.

[0039] When in use, the limiting block 404 is inserted into the limiting groove 402 to prevent the connecting shaft 403 from sliding with the fixing seat 401, and the connecting bolt 406 is threadedly connected to the limiting hole 405, so that the connecting shaft 403 is connected to the fixing seat 401, which facilitates the quick installation and removal of the connecting shaft 403 and the fixing seat 401. The first pulley 1 and the second pulley 2 are rotated by rotating the connecting shaft 403. When the spacing between the first pulley 1 and the second pulley 2 needs to be adjusted, the hand wheel 504 is rotated to drive the adjusting threaded rod 503 to rotate. When the adjusting threaded rod 503 is rotated, the second pulley 2 moves along the limiting frame 501. The limiting frame 501 and the sliding frame 502 cooperate with each other to ensure the stability of the second pulley 2 when moving, thereby changing the spacing between the first pulley 1 and the second pulley 2. When adjusting the spacing between the first pulley 1 and the second pulley 2, there is no need to disassemble the belt, which is convenient for adjustment and easy to use.

[0040] The above are only preferred embodiments of the present invention and do not limit the implementation methods and protection scope of the present invention. Those skilled in the art should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-toothed synchronous pulley for a precision transmission system, characterized in that: include: A first pulley (1) for a precision transmission system, wherein a second pulley (2) is provided on one side of the first pulley (1), retaining rings (3) are fixedly connected to the surfaces of the first pulley (1) and the second pulley (2), and a spacing adjustment component (5) is provided on the first pulley (1); The spacing adjustment assembly (5) comprises a limiting frame (501) uniformly distributed on one side of the first pulley (1); one side of the limiting frame (501) is slidably connected to a sliding frame (502); the second pulley (2) is fixedly connected to one side of the sliding frame (502); one side of the first pulley (1) is rotatably connected to an adjusting threaded rod (503); the adjusting threaded rod (503) is threadedly connected to the second pulley (2); and one end of the adjusting threaded rod (503) is fixedly connected to a handwheel (504).

2. The double-toothed synchronous pulley for a precision transmission system according to claim 1, characterized in that: The hand wheel (504) is provided with an insertion hole (505) on its surface, and threaded holes (506) are evenly provided on one side of the second pulley (2). The threaded holes (506) are provided with an insertion rod (507). The surface of the insertion rod (507) is provided with an external thread (509) that matches the thread of the threaded hole (506), and the insertion rod (507) is inserted into the insertion hole (505).

3. The double-toothed synchronous pulley for a precision transmission system according to claim 2, characterized in that: One end of the insertion rod (507) is fixedly connected to a rotating block (508), and the insertion rod (507) has the same diameter as the insertion hole (505).

4. The double-toothed synchronous pulley for a precision transmission system according to claim 1, characterized in that: A connecting assembly (4) is provided on the first pulley (1), and the connecting assembly (4) comprises a fixing seat (401) fixedly connected to one side of the first pulley (1), and a connecting shaft (403) is inserted into the fixing seat (401).

5. The double-toothed synchronous pulley for a precision transmission system according to claim 4, characterized in that: Limiting grooves (402) are evenly arranged in the fixing seat (401), and limiting blocks (404) are evenly fixedly connected to the surface of the connecting shaft (403), and the limiting blocks (404) have the same size as the limiting grooves (402).

6. The double-toothed synchronous pulley for a precision transmission system according to claim 5, characterized in that: The limiting block (404) is provided with a limiting hole (405) on its surface, and the fixing seat (401) is also provided with limiting holes (405) evenly on its surface. The limiting holes (405) are internally threadedly connected with connecting bolts (406).

7. The double-toothed synchronous pulley for a precision transmission system according to any one of claims 1 to 6, characterized in that: The limiting frame (501) and the sliding frame (502) are both arranged in a square shape, and the adjusting threaded rod (503) is arranged at a central position on one side of the first pulley (1).

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