Novel belt pulley of self-driven balance compensation mechanism

Abstract

The novel belt pulley with the self-driven balance compensation mechanism comprises a main body and a front cover, a convex ring with an outer gear ring is arranged on the front face of the main body, a shaft hole is formed in the middle of the convex ring, a plurality of installation grooves are formed in the convex ring on the periphery of the shaft hole in an array mode, and a balance block is connected in each installation groove in a sliding mode in the radial direction of the convex ring. The front end and the rear end of each balance block are connected with a first spring and a second spring respectively, the end of each first spring and the end of each second spring are connected with the front end and the rear end of the corresponding installation groove respectively, and the front cover is fixed on the protruding ring to limit the front end and the rear end of each balance block. The device is more suitable for being used on a mechanism needing frequent speed regulation, and radial jumping can be avoided.

Description

Technical Field

[0001] The utility model relates to a novel belt pulley of a self-driven balancing compensation mechanism. Background Art

[0002] The patent with announcement number CN108194197A discloses a pulley with a self-driven balancing compensation mechanism and a four-stroke engine, wherein the dynamic balancing compensation mechanism of the pulley includes a flyweight and a spring. The flyweight is limited on the wheel body and has a movable track. The spring applies elastic force to the flyweight so that the center of mass of the flyweight tends to approach the axis of the wheel body along the movable track. In this way, the dynamic balance of the pulley is self-adjusted to avoid radial runout.

[0003] However, the dynamic balance compensation mechanism of the pulley structure above reacts slowly. When the pulley is applied to a mechanism that requires frequent speed regulation, the flyweight of the dynamic balance compensation mechanism is difficult to be quickly thrown out and reset, and it is still difficult to ensure the smooth operation of the pulley. Utility Model Content

[0004] The utility model aims to overcome the above-mentioned deficiencies of the prior art and provide a novel pulley with a self-driven balancing compensation mechanism, the dynamic balancing compensation mechanism of which has a more sensitive response.

[0005] The technical solution of the utility model is: a new type of pulley with a self-driven balancing and compensation mechanism, comprising a main body and a front cover, a convex ring with an external gear ring is provided on the front side of the main body, an axial hole is provided in the middle of the convex ring, and a plurality of mounting grooves are arrayed on the convex ring on the outer periphery of the axial hole, a balancing block is respectively connected in the mounting groove along the radial sliding direction of the convex ring, a first spring and a second spring are respectively connected at the front and rear ends of each balancing block, and the ends of each of the first spring and the second spring are respectively connected to the front and rear ends of the corresponding mounting groove, and the front cover is fixed on the convex ring to limit the positive and negative ends of each balancing block to prevent the balancing block from falling out.

[0006] Specifically, the balancing block is a fan-shaped balancing block, the shape of each mounting groove corresponds to the balancing block, and the convex rings between the mounting grooves form supporting ribs.

[0007] Furthermore, the front and back sides of the balancing block are respectively provided with a sliding block, and the back side of the front cover and the installation groove are respectively provided with guide grooves corresponding to the sliding block, and the guide grooves are arranged along the radial direction of the convex ring.

[0008] Specifically, each end corner of the balancing block is an arc-shaped chamfer.

[0009] Furthermore, an elastic pad is provided at the front and rear ends of the sliding block respectively.

[0010] Furthermore, spring seats are respectively provided at the front and rear ends of the balancing block, and clamping slots are respectively provided at the front and rear ends of the mounting slot, one end of the first spring and the second spring are respectively fixed in the corresponding spring seats, and the other ends of the first spring and the second spring are respectively clamped in the corresponding clamping slots.

[0011] Furthermore, the convex ring and the front cover are provided with a plurality of corresponding screw holes, and the front cover is fixed to the convex ring by a plurality of fixing bolts.

[0012] Furthermore, the main body and the front cover also have corresponding positioning protrusions.

[0013] Preferably, there are eight groups of mounting slots and balancing weights.

[0014] Furthermore, the main body and the convex ring are an integrally formed structure.

[0015] The beneficial effects of the utility model are as follows: when the pulley runs at a low speed, each balancing block is arranged close to the shaft hole under the joint action of the first spring and the second spring; when the rotation speed of the pulley increases, the corresponding balancing block stretches the first spring, compresses the second spring and moves to the outside of the shaft hole under the action of centrifugal force until the pulley as a whole is in a new balanced state to avoid radial runout; when the speed of the pulley decreases, each balancing block is quickly reset under the action of the first spring and the second spring, which has the beneficial effect of sensitive response. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model after removing the front cover;

[0017] Figure 2 It is a structural schematic diagram of the front side of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the balancing block in the utility model.

[0019] In the figure: main body 1, front cover 2, outer gear ring 3, convex ring 4, shaft hole 5, mounting groove 6, balance block 7, first spring 8, second spring 9, slider 10, elastic pad 12, spring seat 13, slot 14, positioning protrusion 15. DETAILED DESCRIPTION

[0020] The technical solution of the utility model is further specifically described below through embodiments and in conjunction with the accompanying drawings.

[0021] Combination Figure 1-3As shown, a new type of pulley with a self-driven balancing and compensating mechanism comprises a main body 1 and a front cover 2, wherein a convex ring 4 with an external gear ring 3 is provided on the front side of the main body 1, an axial hole 5 is provided in the middle of the convex ring 4, a plurality of mounting grooves 6 are arrayed on the convex ring 4 on the outer periphery of the axial hole 5, a balancing block 7 is respectively connected in the mounting groove 6 along the radial sliding direction of the convex ring 4, a first spring 8 and a second spring 9 are respectively connected to the front and rear ends of each balancing block 7, and the ends of each of the first spring 8 and the second spring 9 are respectively connected to the front and rear ends of the corresponding mounting groove 6, and the front cover 2 is fixed on the convex ring 4 to limit the positive and negative ends of each balancing block 7 to prevent the balancing block 7 from falling out.

[0022] When the pulley of the above structure runs at a low speed, each balancing block 7 is arranged close to the shaft hole 5 under the joint action of the first spring 8 and the second spring 9. When the rotation speed of the pulley increases, the corresponding balancing block 7 stretches the first spring 8, compresses the second spring 9 and moves to the outside of the shaft hole 5 under the action of centrifugal force until the pulley as a whole is in a new balanced state to avoid radial runout; when the speed of the pulley decreases, each balancing block 7 is quickly reset under the action of the first spring 8 and the second spring 9, which has the beneficial effect of sensitive response.

[0023] In another embodiment, in combination Figure 1 and Figure 3 As shown, the balancing block 7 is a fan-shaped balancing block, the shape of each mounting groove 6 corresponds to the balancing block 7, and the convex ring 4 between each mounting groove 6 forms a supporting rib to ensure the strength and reliability of the entire pulley structure.

[0024] In another embodiment, in combination Figure 1 and Figure 3 As shown, the front and back sides of the balancing block 7 are respectively provided with a slider 10, and the back side of the front cover 2 and the mounting groove 6 are respectively provided with guide grooves corresponding to the slider 10, and the guide grooves are arranged along the radial direction of the convex ring 4 to prevent the balancing block 7 from shaking left and right when it is displaced.

[0025] In another embodiment, if Figure 3 As shown, each end corner of the balancing block 7 is an arc chamfered to reduce the scratching of the balancing block 7 and the inner wall of the mounting groove 6.

[0026] In another embodiment, if Figure 3 As shown, an elastic pad 12 is provided at the front and rear ends of the slider 10 to prevent the guide groove end from being deformed due to frequent impact.

[0027] In another embodiment, in combination Figure 1 and Figure 3As shown, spring seats 13 are respectively provided at the front and rear ends of the balancing block 7, and clamping grooves 14 are respectively provided at the front and rear ends of the mounting groove 6. One ends of the first spring 8 and the second spring 9 are respectively fixed in the corresponding spring seats 13, and the other ends of the first spring 8 and the second spring 9 are respectively clamped in the corresponding clamping grooves 14 for easy assembly.

[0028] In another embodiment, in combination Figure 1 and Figure 2 As shown, the convex ring 4 and the front cover 2 are provided with a plurality of corresponding screw holes, and the front cover 2 is fixed to the convex ring 4 by a plurality of fixing bolts.

[0029] In another embodiment, if Figure 1 and Figure 2 As shown, the main body 1 and the front cover 2 also have corresponding positioning protrusions 15 to facilitate the matching of the back guide groove of the front cover 2 with the front guide groove of the balance weight 7 during assembly.

[0030] Preferably, there are eight groups of mounting slots 6 and balancing weights 7.

[0031] In another embodiment, the main body 1 and the protruding ring 4 are an integrally formed structure.

Claims

1. A new type of pulley with a self-propelled balancing compensation mechanism, comprising a main body (1) and a front cover (2), wherein the front of the main body (1) is provided with a convex ring (4) with an outer gear ring (3), and the middle of the convex ring (4) is provided with an axial hole (5), wherein: A plurality of mounting grooves (6) are arranged in an array on the convex ring (4) on the outer periphery of the shaft hole (5), and a balancing block (7) is respectively connected in a radially sliding manner along the convex ring (4) in each of the mounting grooves (6), and a first spring (8) and a second spring (9) are respectively connected to the front and rear ends of each of the balancing blocks (7), and the ends of each of the first spring (8) and the second spring (9) are respectively connected to the front and rear ends of the corresponding mounting groove (6), and the front cover (2) is fixed on the convex ring (4) to limit the positive and negative ends of each balancing block (7) to prevent the balancing block (7) from falling out.

2. A new type of pulley with a self-propelled balance compensation mechanism as claimed in claim 1, characterized in that: The balancing block (7) is a fan-shaped balancing block, the shape of each mounting groove (6) corresponds to the balancing block (7), and the convex ring (4) between each mounting groove (6) forms a supporting rib.

3. A new type of pulley with a self-propelled balance compensation mechanism as claimed in claim 2, characterized in that: The front and back sides of the balancing block (7) are respectively provided with a sliding block (10), and the back side of the front cover (2) and the inside of the mounting groove (6) are respectively provided with guide grooves corresponding to the sliding block (10), and the guide grooves are arranged along the radial direction of the convex ring (4).

4. A new type of pulley with a self-propelled balance compensation mechanism as claimed in claim 3, characterized in that: Each end corner of the balancing block (7) is an arc-shaped chamfer.

5. A new type of pulley with a self-propelled balance compensation mechanism as claimed in claim 4, characterized in that: The front and rear ends of the slider (10) are respectively provided with an elastic pad (12).

6. A new type of pulley with a self-propelled balance compensation mechanism as claimed in claim 5, characterized in that: The front and rear ends of the balancing block (7) are respectively provided with spring seats (13); the front and rear ends of the mounting slot (6) are respectively provided with clamping slots (14); one end of the first spring (8) and the second spring (9) are respectively fixed in the corresponding spring seats (13); the other ends of the first spring (8) and the second spring (9) are respectively clamped in the corresponding clamping slots (14).

7. A new type of pulley with a self-propelled balance compensation mechanism as claimed in claim 6, characterized in that: The convex ring (4) and the front cover (2) are provided with a plurality of corresponding screw holes, and the front cover (2) is fixed to the convex ring (4) by means of a plurality of fixing bolts.

8. A new type of pulley with a self-propelled balance compensation mechanism as claimed in claim 7, characterized in that: The main body (1) and the front cover (2) also have corresponding positioning protrusions (15).

9. A new type of pulley with a self-propelled balance compensation mechanism as claimed in claim 8, characterized in that: There are eight groups of the mounting grooves (6) and the balancing blocks (7).

10. A new type of pulley with a self-propelled balance compensation mechanism as claimed in claim 9, characterized in that: The main body (1) and the convex ring (4) are an integrally formed structure.

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