Belt pulley fastening mechanism

Abstract

The utility model relates to the field of belt pulleys, in particular to a belt pulley fastening mechanism which comprises a driving shaft, a mounting shaft is arranged at one end of the driving shaft, the mounting shaft is sleeved with a belt pulley body, a fixing block is arranged between the belt pulley body and the mounting shaft, and a sliding mechanism is arranged between the fixing block and the mounting shaft. By arranging the one-way screw rod, the driving block, the fixing block, the limiting plate, the clamping plate, the two-way screw rod and the like, rotation of the one-way screw rod part is adjusted through mutual cooperation of the one-way screw rod part, the driving block part and the fixing block part in the working process, and the one-way screw rod pushes the fixing block part to move through the driving block part; the fixing block component drives the limiting plate to move into the limiting groove, so that the belt pulley body is limited, the bidirectional screw component is driven to work, the bidirectional screw component drives the two clamping plates to move relatively, and therefore the belt pulley body can be centered and fixed conveniently.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of belt pulley, concretely is a belt pulley fastening mechanism. BACKGROUND

[0002] The belt pulley is an important component in mechanical transmission, which can transmit power through belt drive or chain drive and other ways. The belt pulley is usually installed on the automobile engine, wind turbine, machine tool and other equipment to connect the shaft and transmit power, so as to realize the normal work of the equipment.

[0003] Through the research, the patent with the publication number CN217422073U discloses a belt pulley fastening mechanism. The utility model discloses a mounting mechanism, which is convenient for disassembling the driving shaft and the belt pulley body, facilitates the replacement of the belt pulley body, and also fixes the belt pulley body with different sizes of inner wall, thereby improving the practicability of the belt pulley fastening structure.

[0004] However, the current fastening method of the belt pulley and the rotating shaft adopts one or more methods such as key and key groove cooperation, taper sleeve, locking screw, and interference fit. However, these fastening methods have complex structure and are troublesome to process, and it is not convenient to center and fix the belt pulley with different thicknesses. Therefore, a new scheme is needed to solve this problem. UTILITY MODEL CONTENTS

[0005] In view of the above background technology, the existing technology is not convenient for centering and fixing the belt pulley with different thicknesses.

[0006] The utility model discloses a belt pulley fastening mechanism, including driving shaft, the one end of driving shaft is provided with installation shaft, the installation shaft is covered with belt pulley main part, the fixed block is set between belt pulley main part and installation shaft, the fixed block is set with sliding mechanism between installation shaft, the one end of fixed block near belt pulley main part is provided with limit board, the limit groove is set in the inner ring of belt pulley main part of limit board corresponding position, the both ends of fixed block are slidably provided with clamping plate, the relative sliding drive assembly is set between two clamping plates and fixed block.

[0007] Further, the drive assembly includes a bidirectional screw, the middle part of the bidirectional screw is rotatably connected with the fixed block through the mounting block, the threaded hole is arranged on the clamping plate, and the two ends of the bidirectional screw are respectively screwed with the threaded holes on the two clamping plates.

[0008] Further, the sliding mechanism includes a driving block, the driving block is slidably installed on the fixed block, the one end of the fixed block near the driving block is provided with an inclined surface one, and the inclined surface two is arranged on the driving block corresponding to the inclined surface one.

[0009] Further, the driving block is provided with a one-way screw rod, one end of the one-way screw rod is rotationally connected with the mounting shaft through the driving block, and the one-way screw rod is threadedly connected with the driving block.

[0010] Further, one side of the fixing block is provided with a spring, one end of the spring is mounted on the fixing block, and the other end is mounted on the mounting shaft.

[0011] Further, the inside of the spring is provided with a telescopic rod, one end of the telescopic rod is mounted on the fixing block, and the other end is mounted on the mounting shaft.

[0012] Further, the inside of the mounting shaft is provided with a cavity, one end of the fixing block is slidingly arranged in the cavity, and the two sides of the mounting block are provided with the limiting plates.

[0013] Compared with the prior art, the utility model has the advantages that:

[0014] 1、 the utility model discloses a one-way screw rod, a driving block, a fixing block, a limiting plate, a clamping plate and a two-way screw rod are arranged, in the working process, the one-way screw rod part, the driving block part and the fixing block part are matched with each other, the one-way screw rod part is adjusted to rotate, the one-way screw rod drives the fixing block part to move through the driving block part, the fixing block part drives the limiting plate to move into the limiting groove, thereby limiting the belt pulley main body, and the two-way screw rod part is driven to work, and the two clamping plates are relatively moved, thereby conveniently centering and fixing the belt pulley main body.

[0015] 2、 the utility model discloses a telescopic rod and a spring are arranged, in the working process, when being released, the telescopic rod part and the spring part are matched with each other, the spring can drive the fixing block part to move to the mounting shaft, thereby realizing the separation of the limiting plate part and the limiting, and the position of the fixing block in movement is limited through the telescopic rod part, thereby improving the stability of the fixing block in movement. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings explained here are used to provide further understanding of the application, constitute a part of the application, the illustrative embodiment of the application and its explanation are used to explain the application, and do not constitute improper limitation to the application.

[0017] Figure 1 It is the overall structure schematic view of the utility model;

[0018] Figure 2 It is the utility model sectional view;

[0019] Figure 3 It is the utility modelFigure 2 Enlarged view of the middle A;

[0020] Figure 4 The utility model is local explosion schematic diagram.

[0021] In the figure: 1, drive shaft; 2, mounting shaft; 3, pulley main body; 4, fixed block; 5, inclined surface one; 6, cavity; 7, limiting plate; 8, limiting groove; 9, clamping plate; 10, threaded hole; 11, two-way screw; 12, mounting block; 13, drive block; 14, inclined surface two; 15, one-way screw; 16, telescopic rod; 17, spring. DETAILED DESCRIPTION

[0022] The following will be with the figure disclosed multiple embodiments of the utility model, for clear statement, many details on the real object will be described in the following together. However, it should be appreciated that these details on the real object should not be used to limit the utility model. That is, in some embodiments of the utility model, these details on the real object are unnecessary. In addition, for the sake of simplicity, some conventional structures and components will be drawn in the figure in a simple schematic way.

[0023] Please refer to Figure 1 、 Figure 2 The pulley fastening mechanism of the utility model, including drive shaft 1, one end of drive shaft 1 is provided with mounting shaft 2, mounting shaft 2 is sleeved with pulley main body 3, fixed block 4 is arranged between pulley main body 3 and mounting shaft 2, sliding mechanism is arranged between fixed block 4 and mounting shaft 2, one end of fixed block 4 close to pulley main body 3 is provided with limiting plate 7, limiting groove 8 is arranged in the inner ring of pulley main body 3 corresponding to the position of limiting plate 7, clamping plate 9 is slidably arranged at both ends of fixed block 4, and drive assembly is arranged between the two clamping plates 9 and fixed block 4 to slide relative to each other.

[0024] When fixing pulley main body 3, first, align the limiting groove 8 on pulley main body 3 with limiting plate 7, then control fixed block 4 to slide on mounting shaft 2 through sliding mechanism, fixed block 4 drives limiting plate 7 and clamping plate 9 to move, limiting plate 7 is inserted into the corresponding limiting groove 8, thereby supporting and limiting pulley main body 3, then control the relative movement of the two clamping plates 9 through drive assembly, clamping plate 9 drives pulley main body 3 to move on limiting plate 7, and pulley main body 3 is clamped and fixed through the relative two clamping plates 9.

[0025] As Figure 2 、 Figure 4As shown, the drive assembly includes a bidirectional screw 11, the middle part of the bidirectional screw 11 is rotatably connected with the fixed block 4 through the mounting block 12, the clamping plate 9 is provided with a threaded hole 10, the two ends of the bidirectional screw 11 are respectively threadedly connected with the threaded holes 10 on the two clamping plates 9, the staff drives the bidirectional screw 11 to rotate through a tool, the bidirectional screw 11 drives the two clamping plates 9 to move relatively, the two clamping plates 9 are driven to move close to each other to clamp and fix the belt pulley body 3, the bidirectional screw 11 is reversely driven to rotate, so that the two clamping plates 9 move away from each other, thereby releasing the fixing of the belt pulley body 3.

[0026] As shown in the figure, Figure 2 The sliding mechanism includes a drive block 13, the drive block 13 is slidingly installed on the fixed block 4, the end of the fixed block 4 close to the drive block 13 is provided with an inclined surface one 5, the drive block 13 on the corresponding position of the inclined surface one 5 is provided with an inclined surface two 14, the drive block 13 is driven to move towards the drive shaft 1, the drive shaft 1 pushes the fixed block 4 to slide on the drive shaft 1, thereby limiting the position of the fixed block 4, the drive block 13 is reversely driven to move, thereby releasing the limitation of the fixed block 4.

[0027] As shown in the figure, Figure 1 , Figure 2 The drive block 13 is provided with a one-way screw 15, one end of the one-way screw 15 penetrates through the drive block 13 and is rotatably connected with the mounting shaft 2, the one-way screw 15 is threadedly connected with the drive block 13, the staff drives the one-way screw 15 to rotate through a tool, the one-way screw 15 drives the drive block 13 to move in a specified direction.

[0028] As shown in the figure, Figure 2 , Figure 3 One side of the fixed block 4 is provided with a spring 17, one end of the spring 17 is installed on the fixed block 4, the other end is installed on the mounting shaft 2, the spring 17 is stretched and stored when the fixed block 4 moves towards the belt pulley body 3, and the fixed block 4 is driven to move towards the axis of the mounting shaft 2 when the spring 17 releases the force, and the reset is realized.

[0029] The inside of the spring 17 is provided with a telescopic rod 16, one end of the telescopic rod 16 is installed on the fixed block 4, the other end is installed on the mounting shaft 2, the telescopic rod 16 limits the movement of the fixed block 4 when the fixed block 4 moves, improves the stability of the fixed block 4 when moving, and avoids the instability of the fixed block 4 caused by the tension of the spring 17.

[0030] As shown in the figure, Figure 2 , Figure 4 The inside of the mounting shaft 2 is provided with a cavity 6, one end of the fixed block 4 is slidingly arranged in the cavity 6, the two sides of the mounting block 12 are provided with limiting plates 7, which are symmetrically arranged to make the stress uniform and improve the connection stability between the mounting shaft 2 and the belt pulley body 3.

[0031] The above merely describes the embodiments of the present application and is not intended to limit the present application. The present application can be changed and modified in various ways by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the scope of the claims of the present application.

Claims

1. A pulley fastening mechanism, comprising a drive shaft (1), characterized in that: One end of the driving shaft (1) is provided with a mounting shaft (2), a pulley body (3) is sleeved on the mounting shaft (2), a fixing block (4) is provided between the pulley body (3) and the mounting shaft (2), a sliding mechanism is provided between the fixing block (4) and the mounting shaft (2), a limiting plate (7) is provided at one end of the fixing block (4) close to the pulley body (3), a limiting groove (8) is provided on the inner ring of the pulley body (3) at a position corresponding to the limiting plate (7), clamping plates (9) are slidably provided at both ends of the fixing block (4), and a relatively sliding driving component is provided between the two clamping plates (9) and the fixing block (4).

2. A pulley fastening mechanism according to claim 1, characterized in that: The driving assembly includes a bidirectional screw (11), the middle part of the bidirectional screw (11) is rotatably connected to the fixed block (4) through a mounting block (12), a threaded hole (10) is provided on the clamping plate (9), and both ends of the bidirectional screw (11) are respectively threadedly connected to the threaded holes (10) on the two clamping plates (9).

3. A pulley fastening mechanism according to claim 1, characterized in that: The sliding mechanism comprises a driving block (13), wherein the driving block (13) is slidably mounted on the fixed block (4), an inclined surface 1 (5) is provided at one end of the fixed block (4) close to the driving block (13), and an inclined surface 2 (14) is provided on the driving block (13) at a position corresponding to the inclined surface 1 (5).

4. A pulley fastening mechanism according to claim 3, characterized in that: A one-way screw (15) is provided on the driving block (13), one end of the one-way screw (15) passes through the driving block (13) and is rotatably connected to the mounting shaft (2), and the one-way screw (15) is threadedly connected to the driving block (13).

5. The pulley fastening mechanism according to claim 1, characterized in that: A spring (17) is provided on one side of the fixing block (4), one end of the spring (17) is mounted on the fixing block (4), and the other end is mounted on the mounting shaft (2).

6. A pulley fastening mechanism according to claim 5, characterized in that: A telescopic rod (16) is provided inside the spring (17), one end of the telescopic rod (16) is mounted on the fixed block (4), and the other end is mounted on the mounting shaft (2).

7. A pulley fastening mechanism according to claim 2, characterized in that: A cavity (6) is provided inside the installation shaft (2), one end of the fixing block (4) is slidably provided in the cavity (6), and the limiting plates (7) are provided on both sides of the installation block (12).

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