An adjustable timing pulley

Abstract

The utility model discloses an adjustable synchronous wheel belongs to mechanical drive technical field, including front stop, connecting block and four wheel blocks, and front stop and connecting block are symmetrically arranged, four wheel blocks are detachably connected between front stop and connecting block, and four wheel blocks all can detachably connect with a group of pressing plate, four groups of pressing plate are respectively with four wheel blocks between the threaded connection with a group of internal hexagon screw, and the end of front stop and connecting block is close to all set up four T type sliding slots, and the both ends of four groups of internal hexagon screw are respectively slidingly inserted in eight T type sliding slots, when the synchronous belt needs tension adjustment, through the rotation cylinder head screw and moves the position of taper block, makes four wheel blocks move through four groups of internal hexagon screw and eight T type sliding slot's sliding connection and carries out the movement, and the taper of four wheel blocks moves after cooperation taper block and realizes radial adjustment, makes the synchronous belt not to need to disassemble and can complete tension adjustment, and tension adjustment is simple and convenient, and guarantees that the synchronous belt can steady transmission.

Description

Technical Field

[0001] This utility model relates to the field of mechanical transmission technology, and more specifically, to an adjustable synchronous pulley. Background Technology

[0002] Synchronous pulleys generally refer to synchronous belt pulleys, which are transmission components. They are usually used in conjunction with synchronous belts to transmit power and motion through the meshing of the pulley teeth and the grooves of the synchronous belt. They are characterized by accurate and smooth transmission.

[0003] Currently, synchronous pulleys need to be paired with synchronous belts for transmission to enable the movement of machinery. However, the existing synchronous pulleys are usually of fixed size. After the synchronous pulley and synchronous belt are installed, when the tension of the two is insufficient, the synchronous pulley needs to be removed and repositioned, which is time-consuming and laborious. Moreover, when the synchronous belt is worn, the entire synchronous pulley needs to be disassembled and replaced, making the replacement of the synchronous belt inconvenient. Therefore, this utility model proposes an adjustable synchronous pulley. Utility Model Content

[0004] 1. Technical problems to be solved

[0005] In view of the problems existing in the prior art, the purpose of this utility model is to provide an adjustable timing pulley, which aims to solve the problems that the size of the timing pulley in the prior art is usually fixed. After the timing pulley and timing belt are installed, when the tension of the two is insufficient, the timing pulley needs to be removed and repositioned, which is time-consuming and laborious. Moreover, when the timing belt is worn, the entire timing pulley needs to be removed and replaced, which makes the replacement of the timing belt inconvenient.

[0006] 2. Technical Solution

[0007] To solve the above problems, the present invention adopts the following technical solution:

[0008] An adjustable synchronous pulley includes a front stop, a connecting block, and four wheel blocks. The front stop and the connecting block are symmetrically arranged. The four wheel blocks are detachably connected between the front stop and the connecting block. Each of the four wheel blocks is detachably connected to a set of pressure plates. Each of the four sets of pressure plates is threadedly connected to a set of hexagon socket head cap screws. The front stop and the connecting block have four T-shaped grooves at their adjacent ends, and the two ends of the four sets of hexagon socket head cap screws are slidably inserted into the eight T-shaped grooves. The front stop is internally threaded with a cylindrical head screw, and one end of the cylindrical head screw is threadedly connected to a tapered block, which is located between the four wheel blocks.

[0009] In a preferred embodiment of this utility model, the front stop block, connecting block, and tapered block are coaxially arranged, and the four wheel blocks, four sets of pressure plates, and four sets of internal hexagon screws are all evenly distributed around the concentric axis of the front stop block, connecting block, and tapered block.

[0010] As a preferred embodiment of this utility model, each of the four wheel blocks has a taper at one end that is close to each other, and the taper at one end of the four wheel blocks is matched with the taper of the outer surface of the taper block.

[0011] As a preferred embodiment of this utility model, each of the four sets of pressure plates has an arc-shaped opening at one end that is close to each other, and the arc-shaped opening at one end that is close to each other is larger than the taper of the outer surface of the tapered block.

[0012] As a preferred embodiment of this utility model, each group of pressure plates is provided with two plates, and each group of two pressure plates is detachably connected to the symmetrical two ends of a wheel block, and each group of two pressure plates is located between the front stop block and the connecting block.

[0013] As a preferred embodiment of this utility model, each group of the hexagon socket screws is provided with two screws, and each group of two hexagon socket screws is threaded to the symmetrical two ends of a wheel block, and each group of two hexagon socket screws passes through a group of two pressure plates.

[0014] As a preferred embodiment of this utility model, the two hexagonal socket screws in each group are respectively slidably inserted into two T-shaped grooves at the ends of the front stop block and the connecting block that are close to each other.

[0015] As a preferred embodiment of this utility model, the four T-shaped grooves on the front stop block and the four T-shaped grooves on the connecting block are symmetrically distributed around the central axis, and the four sets of eight internal hexagon screws are respectively radially slidably inserted into the eight T-shaped grooves.

[0016] As a preferred embodiment of this utility model, the end of the connecting block away from the front stop is provided with a connecting port.

[0017] 3. Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] (1) In this scheme, four sets of pressure plates are installed on four wheel blocks respectively by four sets of internal hexagon screws. The four wheel blocks are installed between the front stop block and the connecting block by sliding connection of four sets of internal hexagon screws and eight T-shaped grooves. The four wheel blocks and the outer surface of the tapered block are taper-fitted to form a synchronous wheel. The synchronous belt is sleeved on the outer surface of the four wheel blocks and is restricted by the four sets of pressure plates, so that stable transmission can be achieved. The sliding connection of the four sets of internal hexagon screws and the eight T-shaped grooves has a large friction force, which keeps the four wheel blocks stable after installation. When the synchronous belt needs to be tensioned, the position of the tapered block is moved by rotating the cylindrical head screw, so that the four wheel blocks can be moved by sliding connection of the four sets of internal hexagon screws and the eight T-shaped grooves. After the four wheel blocks move, they cooperate with the taper of the tapered block to achieve radial adjustment, so that the tension of the synchronous belt can be adjusted without disassembly. The tension adjustment is simple and convenient, ensuring that the synchronous belt can be stably transmitted.

[0020] (2) In this solution, when the timing belt wears out, a wheel block is removed from the timing pulley by a set of internal hexagon screws and two T-shaped grooves. A notch is formed on the timing pulley, thereby reducing the tension of the timing belt and allowing the timing belt to be quickly removed and replaced without disassembling the timing pulley as a whole, making replacement more convenient. Attached Figure Description

[0021] Figure 1 This is the front view of the present invention;

[0022] Figure 2 This is a perspective view of the present utility model;

[0023] Figure 3 This is a cross-sectional view of the present invention;

[0024] Figure 4 This is an exploded view of the present invention.

[0025] Explanation of the labels in the diagram:

[0026] 1. Front stop block; 2. Connecting block; 3. Wheel block; 4. Pressure plate; 5. Socket head screw; 6. T-slot; 7. Cylindrical head screw; 8. Tapered block; 9. Connecting port. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" 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 a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0030] Example:

[0031] Please see Figure 1-4 An adjustable synchronous pulley includes a front stop 1, a connecting block 2, and four wheel blocks 3. The front stop 1 and the connecting block 2 are symmetrically arranged. The four wheel blocks 3 are detachably connected between the front stop 1 and the connecting block 2. Each of the four wheel blocks 3 is detachably connected to a set of pressure plates 4. The four sets of pressure plates 4 are threadedly connected to the four wheel blocks 3 by a set of internal hexagon screws 5. The front stop 1 and the connecting block 2 are provided with four T-shaped sliding grooves 6 at their adjacent ends. The two ends of the four sets of internal hexagon screws 5 are slidably inserted into the eight T-shaped sliding grooves 6. The front stop 1 is internally threaded with a cylindrical head screw 7. One end of the cylindrical head screw 7 is threadedly connected to a tapered block 8, and the tapered block 8 is located between the four wheel blocks 3.

[0032] In this embodiment, the tapered block 8 is installed on one side of the front stop block 1 by a cylindrical head screw 7. Four sets of pressure plates 4 are respectively installed on the four wheel blocks 3 by four sets of internal hexagonal screws 5. The two ends of the four sets of internal hexagonal screws 5 are slidably installed in eight T-shaped grooves 6 on the front stop block 1 and the connecting block 2, so that the four wheel blocks 3 enclose the tapered block 8, thus completing the assembly of the entire synchronous pulley. By fitting the synchronous belt onto the outer surface of the four wheel blocks 3, and with the four sets of pressure plates 4 restricting the synchronous belt to prevent it from falling off, the synchronous belt drives the entire synchronous pulley for transmission on the outer surface of the four wheel blocks 3. When the tension of the synchronous belt needs to be adjusted during use, the position of the tapered block 8 is adjusted by rotating the cylindrical head screw 7. The tapered block 8 causes the four wheel blocks 3 to move radially through the taper of its outer surface, and the four wheel blocks 3 expand outward to increase the tension of the synchronous belt. When the tension of the synchronous belt needs to be reduced, the cylindrical head screw 7 is rotated... Screw 7 controls the movement of tapered block 8, preventing the outer surface of tapered block 8 from contacting the four wheel blocks 3. Then, it presses the four wheel blocks 3 inward. The four wheel blocks 3 approach the tapered block 8 through the insertion of four sets of internal hexagon screws 5 and eight T-shaped slides 6, thereby reducing the tension of the timing belt. When the timing belt is worn and needs to be replaced, a notch is created on the timing pulley by pulling out a set of internal hexagon screws 5 connected to one of the wheel blocks 3 from the two T-shaped slides 6 on the front stop block 1 and the connecting block 2, thereby reducing the tension of the timing belt on the timing pulley and allowing the timing belt to be quickly removed and replaced. The two ends of the four sets of internal hexagon screws 5 are slidably installed in the eight T-shaped slides 6. The sliding connection between the four sets of internal hexagon screws 5 and the eight T-shaped slides 6 has high friction. After the four sets of internal hexagon screws 5 enter the eight T-shaped slides 6, they can maintain stability through the friction of the contact surface.

[0033] Specifically, the front stop 1, connecting block 2, and tapered block 8 are coaxially arranged, and the four wheel blocks 3, four sets of pressure plates 4, and four sets of internal hexagon screws 5 are evenly distributed around the concentric axis of the front stop 1, connecting block 2, and tapered block 8.

[0034] In this embodiment, when the four wheel blocks 3 adjust the tension of the timing belt, they move radially with the central axis of the front stop block 1, the connecting block 2 and the tapered block 8 as the center, which can stably adjust the tension of the timing belt.

[0035] Specifically, each of the four wheel blocks 3 has a taper at one end that is close to each other, and the taper at one end of the four wheel blocks 3 is matched with the taper on the outer surface of the taper block 8.

[0036] In this embodiment, the tapered block 8 needs to be moved when the tension of the four wheel blocks 3 is adjusted. After the tapered block 8 is moved, the four wheel blocks 3 make contact with the tapered outer surface of the tapered block 8 through the matching of the internal taperedness, so that the position moves radially synchronously, thereby realizing the adjustment of the tension of the synchronous belt.

[0037] Specifically, each of the four sets of pressure plates 4 has an arc-shaped opening at one end that is close to the other, and the arc-shaped opening at one end of the four sets of pressure plates 4 is larger than the taper of the outer surface of the tapered block 8.

[0038] In this embodiment, when the four wheel blocks 3 are adjusted to match the taper of the outer surface of the tapered block 8, the four sets of pressure plates 4 move with the four wheel blocks 3. The four sets of pressure plates 4, through the inner arc-shaped opening, can avoid affecting the adjustment of the position of the four wheel blocks 3 by the tapered block 8.

[0039] Specifically, each set of pressure plates 4 is set to two, and each set of two pressure plates 4 is detachably connected to the symmetrical two ends of a wheel block 3, and each set of two pressure plates 4 is located between the front stop block 1 and the connecting block 2.

[0040] In this embodiment, each group of two pressure plates 4 are installed on both sides of a wheel block 3. When the synchronous belt is sleeved on the outer surface of the four wheel blocks 3, the synchronous belt is located between each group of two pressure plates 4. Each group of two pressure plates 4 restricts the synchronous belt, keeping it stable and preventing it from falling off.

[0041] Specifically, each set of two hexagon socket screws 5 is configured, and each set of two hexagon socket screws 5 is threaded to the symmetrical two ends of a wheel block 3, and each set of two hexagon socket screws 5 passes through a set of two pressure plates 4.

[0042] In this embodiment, each group of two hexagonal socket screws 5 passes through each group of two pressure plates 4 and is threaded onto a wheel block 3, so that each group of two pressure plates 4 is assembled on a wheel block 3.

[0043] Specifically, the two hexagonal socket screws 5 in each group are slidably inserted into two T-shaped grooves 6 at opposite ends of the front stop block 1 and the connecting block 2.

[0044] In this embodiment, the heads of the two socket head cap screws 5 in each group are slidably inserted into the T-shaped grooves 6 opened on the front stop block 1 and the connecting block 2 respectively. The contact position between the heads of the two socket head cap screws 5 in each group and the corresponding T-shaped grooves 6 has a certain friction force, which enables the four wheel blocks 3 to be stably installed between the front stop block 1 and the connecting block 2 for synchronous belt transmission.

[0045] Specifically, the four T-shaped grooves 6 on the front stop block 1 and the four T-shaped grooves 6 on the connecting block 2 are symmetrically distributed around the central axis, and the four sets of eight internal hexagon screws 5 are radially slidably inserted into the eight T-shaped grooves 6 respectively.

[0046] In this embodiment, the eight T-shaped grooves 6 on the front stop block 1 and the connecting block 2 correspond to the positions of the four sets of eight internal hexagon screws 5. The four sets of eight internal hexagon screws 5 are radially installed in the eight T-shaped grooves 6 along the central axis of the front stop block 1, the connecting block 2 and the tapered block 8, which facilitates the adjustment of the positions of the four wheel blocks 3.

[0047] Specifically, the end of the connecting block 2 away from the front stop block 1 has a connecting port 9.

[0048] In this embodiment, the connecting block 2 is connected to the drive shaft through the connecting port 9. The drive shaft causes the entire synchronous pulley to rotate, thereby realizing the transmission of the synchronous belt.

[0049] Working principle: When the synchronous pulley and synchronous belt are transmitting power, the synchronous belt is first fitted onto the outer surface of the four pulley blocks 3. Four sets of pressure plates 4 restrict the synchronous belt from both sides of the four pulley blocks 3, keeping the synchronous belt stable. The connecting block 2 connects to the rotating shaft of the drive device. The drive device controls the rotation of the four pulley blocks 3 through the connecting block 2, thereby driving the synchronous belt to transmit power. When the tension of the synchronous belt needs to be adjusted during use, the tapered block 8 is moved by rotating the cylindrical head screw 7. The tapered block 8 pushes the four pulley blocks 3 outward through its taper, increasing the tension of the synchronous belt. Rotating the cylindrical head screw 7 prevents the outer surface of the tapered block 8 from contacting the four pulley blocks 3, thus adjusting the tension of the four pulley blocks. When block 3 is pressed inward, the four wheel blocks 3 slide in the eight T-shaped grooves 6 through four sets of hexagon socket screws 5 and contact the outer surface of the tapered block 8. The four sets of hexagon socket screws 5 are kept stable by the large friction force in the eight T-shaped grooves 6, so that the four wheel blocks 3 remain stable after being retracted, thereby reducing the tension of the timing belt and adjusting the timing belt tension to the required usage. When the timing belt wears on the timing pulley and needs to be replaced, by pulling out a set of hexagon socket screws 5 connected to one wheel block 3 from the two T-shaped grooves 6 on the front stop block 1 and the connecting block 2, a notch is created on the timing pulley, thereby reducing the tension of the timing belt on the timing pulley, so that the timing belt can be quickly removed and replaced.

[0050] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model based on the technical solution and its improved concept should be covered within the protection scope of the present utility model.

Claims

1. An adjustable timing pulley, comprising a front stop (1), a connecting block (2), and four wheel blocks (3), characterized in that: The front stop (1) and the connecting block (2) are symmetrically arranged. The four wheel blocks (3) are detachably connected between the front stop (1) and the connecting block (2). Each of the four wheel blocks (3) is detachably connected with a set of pressure plates (4). The four sets of pressure plates (4) are threadedly connected to the four wheel blocks (3) with a set of internal hexagon screws (5). The front stop (1) and the connecting block (2) are provided with four T-shaped grooves (6) at their close ends. The two ends of the four sets of internal hexagon screws (5) are slidably inserted into the eight T-shaped grooves (6). The front stop (1) is threadedly connected with a cylindrical head screw (7). One end of the cylindrical head screw (7) is threadedly connected with a tapered block (8), and the tapered block (8) is located between the four wheel blocks (3).

2. An adjustable timing pulley as in claim 1 wherein: The front stop (1), connecting block (2) and tapered block (8) are coaxially arranged, and the four wheel blocks (3), four sets of pressure plates (4) and four sets of internal hexagon screws (5) are evenly distributed around the concentric axis of the front stop (1), connecting block (2) and tapered block (8).

3. An adjustable timing pulley as in claim 2 wherein: The four wheel blocks (3) are all provided with a taper at one end that is close to each other, and the taper of the four wheel blocks (3) at one end that is close to each other matches the taper of the outer surface of the taper block (8).

4. An adjustable timing pulley as in claim 3 wherein: The four sets of pressure plates (4) are provided with arc-shaped openings at their closest ends, and the arc-shaped openings at the closest ends of the four sets of pressure plates (4) are larger than the taper of the outer surface of the tapered block (8).

5. An adjustable timing pulley as in claim 4 wherein: Each set of pressure plates (4) consists of two plates, and each set of two pressure plates (4) is detachably connected to the two symmetrical ends of a wheel block (3), and each set of two pressure plates (4) is located between the front stop block (1) and the connecting block (2).

6. An adjustable timing pulley as in claim 5 wherein: Each group of the internal hexagonal screws (5) is set to two, and each group of two internal hexagonal screws (5) is threaded to the symmetrical two ends of a wheel block (3), and each group of two internal hexagonal screws (5) passes through a group of two pressure plates (4).

7. An adjustable timing pulley as in claim 6 wherein: The two socket head cap screws (5) of each group are slidably inserted into two T-shaped grooves (6) at opposite ends of the front stop block (1) and the connecting block (2).

8. An adjustable timing pulley as in claim 7 wherein: The four T-shaped grooves (6) on the front stop (1) and the four T-shaped grooves (6) on the connecting block (2) are symmetrically distributed around the central axis, and the four sets of eight internal hexagon screws (5) are respectively radially slidably inserted into the eight T-shaped grooves (6).

9. An adjustable timing pulley as in claim 8 wherein: The connecting block (2) has a connecting port (9) at one end away from the front stop (1).

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