A balancing gear device

Abstract

This utility model relates to a balancing gear device in the field of gear technology, including a hub and a gear disposed on the outer ring surface of the hub. A diaphragm assembly, a flange, and a cover are coaxially arranged on the inner side of the hub. The diaphragm assembly is composed of multiple layers of stacked elastic diaphragms. The outer edge of the diaphragm assembly is connected to the hub by at least one ring of fasteners, and the inner edge is clamped between the flange and the cover to form a rigid connection area. The cover fixes the diaphragm assembly through a three-stage connection structure. For gear operation in high-speed reducers, this utility model utilizes the excellent self-balancing ability of the herringbone gear itself and the balancing gear device to counteract the unbalanced force caused by uneven gear mass or assembly errors, reducing vibration and noise. After balancing, gear meshing is smoother, effectively increasing transmission accuracy and stability. With reduced vibration, the frictional resistance between gear meshing and bearings decreases, further increasing transmission efficiency.

Description

Technical Field

[0001] This utility model relates to the field of gear technology, and in particular to a balancing gear device. Background Technology

[0002] Currently, the balancing gear device of the reducer is adjusted by counterweight balancing method. Its adjustment is not flexible and can only be used for fixed speed or low speed conditions. It cannot adapt to speed change or dynamic load changes. If the gear wears or the operating conditions change after adjustment, it needs to be recalibrated, which has high maintenance costs. The internal gear is a one-way spur gear with low load-bearing capacity and cannot balance axial force. In addition, adding counterweight may increase the moment of inertia and affect the dynamic response of the system.

[0003] To address this, we designed a balancing gear device. Utility Model Content

[0004] In order to overcome the shortcomings of the prior art, this utility model discloses a balancing gear device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A balancing gear device includes a hub and a gear disposed on the outer ring surface of the hub. The inner side of the hub is provided with a diaphragm assembly, a flange and a cover coaxial with it. The diaphragm assembly is composed of multiple layers of stacked elastic diaphragms. The outer edge of the diaphragm assembly is connected to the hub by at least one ring of fasteners, and the inner edge is clamped between the flange and the cover to form a rigid connection area.

[0007] The cover secures the diaphragm assembly via a three-tiered connection structure:

[0008] The outer edge of the cover is penetrated by at least two rings of fasteners through the cover, diaphragm assembly and flange;

[0009] The inner edge of the cover is connected to the diaphragm assembly by at least two turns of fasteners;

[0010] The center of the cover is connected to the center hole of the diaphragm assembly via an axial fastener.

[0011] Furthermore, in the third-order connection structure:

[0012] The fasteners on the outer edge of the cover are bolt and nut sets, penetrating through the through holes of the cover, the diaphragm set, and the flange;

[0013] The fasteners on the inner edge of the cover are bolts, which pass through the through holes of the diaphragm assembly and are screwed into the threaded holes of the cover.

[0014] The axial fastener at the center of the cover is a bolt, which passes through the central through hole of the diaphragm assembly and is screwed into the central threaded hole of the cover.

[0015] Furthermore, the fasteners on the outer edge of the cover are staggered, and the outer diameter of the cover is the same as the outer diameter of the flange.

[0016] Furthermore, the number of elastic diaphragms is 12-18, and each elastic diaphragm is provided with a coaxial mounting hole system corresponding to the three-stage connection structure.

[0017] Furthermore, a radial convex ring is provided in the middle of the outer ring surface of the hub, and there are two gears, which are symmetrically arranged on both sides of the radial convex ring.

[0018] Furthermore, the diaphragm assembly is provided with at least one ring of process holes, which are located in the area between the hub and the cover.

[0019] Furthermore, an inner ring plate is provided in the middle of the inner ring surface of the hub, and the inner ring plate and the cover are located on the same side of the diaphragm assembly; the end face of the inner ring plate corresponding to the diaphragm assembly is provided with a first annular step and a second annular step from the outside to the inside.

[0020] The step surface of the first annular step is in contact with the outer edge side of the diaphragm assembly and is connected by at least one ring of fasteners;

[0021] There is a gap between the second annular step and the side of the diaphragm assembly.

[0022] Furthermore, the gear is a herringbone gear and is connected to the hub by a pin.

[0023] Compared with the prior art, the beneficial effects of this utility model are: for the gear operation in the high-speed reducer, the excellent self-balancing ability of the herringbone teeth and the balancing gear device can offset the unbalanced force caused by uneven mass or assembly error of the gear, reduce vibration and noise, and make the gear meshing smoother after balancing, effectively increasing the transmission accuracy and stability. After the vibration is reduced, the frictional resistance between gear meshing and bearings decreases, further increasing the transmission efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 This is the right view of the present invention;

[0026] Figure 3 This is a schematic diagram of the diaphragm structure in this utility model;

[0027] Figure 4 This is a schematic diagram of the structure of the cover in this utility model.

[0028] In the diagram: 1. Hub; 11. Radial convex ring; 12. Inner ring plate; 13. First annular step; 14. Second annular step; 2. Gear; 3. Pin; 4. Diaphragm assembly; 41. Elastic diaphragm; 42. Process hole; 5. Flange; 6. Cover. Detailed Implementation

[0029] The present invention will be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention. In the description of the present invention, it should be understood that if terms such as "upper", "lower", "front", "rear", "left", "right" indicate orientation or positional relationship, they are only corresponding to the drawings of this application for the convenience of describing the present invention. It should be understood that if terms such as "end", "side", "end portion", "side part", "lateral", "longitudinal", etc. indicate orientation or positional relationship, they are only corresponding to the length and width of the corresponding component. That is, "end" indicates the head and tail area in the length direction of the corresponding component, and "side part" indicates the head and tail area in the width direction of the corresponding component. They are used for the convenience of describing the present invention and do not indicate or imply that the device or element referred to must have a specific orientation.

[0030] Example 1, in conjunction with Appendix Figure 1-4 A balancing gear device includes a hub 1, a gear 2, a pin 3, a diaphragm assembly 4, a flange 5, and a cover 6.

[0031] The hub 1 is an axially continuous structure, with a radial convex ring 11 in the middle of its outer ring surface and an inner ring plate 12 in the middle of its inner ring surface. Two gears 2 are herringbone gears, symmetrically arranged on both sides of the radial convex ring 11, and fixedly connected to the hub 1 by pins 3; that is, the axial force is offset by the self-balancing characteristic of the tooth direction force of the herringbone gear, avoiding the defect of traditional spur gears requiring additional counterweight.

[0032] The diaphragm assembly 4 consists of 12-18 (preferably 15) stacked elastic diaphragms 41 (such as those made of stainless steel), each with a coaxially distributed system of mounting holes. The outer edge of the diaphragm assembly 4 is connected to the inner ring plate 12 of the hub 1 by at least one ring of bolts and nuts, while the inner edge is clamped between the flange 5 and the cover 6 to form a rigid connection area. This absorbs vibration energy caused by uneven mass distribution or assembly errors through elastic deformation, significantly reducing the impact of centrifugal force during high-speed operation, reducing noise and abnormal vibration, and enabling the device to have a dynamic leveling function. It can adapt to speed changes or sudden load changes, eliminating the need for shutdown and recalibration as required by the counterweight balancing method, thus reducing maintenance costs.

[0033] Furthermore, the diaphragm assembly 4 is provided with at least one ring of process holes 42 (e.g., one ring), which are located in the area between the hub 1 and the cover 6.

[0034] Furthermore, the details of the fit between the diaphragm assembly 4 and the wheel hub 1 are as follows:

[0035] The inner ring plate 12 of the hub 1 is provided with a first annular step 13 and a second annular step 14 on its end face;

[0036] The first annular step 13 is attached to the outer edge of the diaphragm group 4 and is fixed by a ring of bolts and nuts.

[0037] The second annular step 14 has a gap between its step surface and the side surface of the diaphragm group 4.

[0038] Among them, the third-order connection structure:

[0039] Connection of the outer edge: The outer edge of the cover 6 is locked through the through holes of the cover 6, the diaphragm group 4 and the flange 5 by at least two rings of staggered bolt and nut groups.

[0040] Preferably, the outer diameter of the cover 6 is the same as that of the flange 5.

[0041] Connection of the inner edge: The inner edge of the cover 6 is screwed into the threaded hole of the cover 6 after passing through the through hole of the diaphragm assembly 4 with at least two turns of bolts.

[0042] Central connection: The central part of the cover 6 is screwed into the central threaded hole of the cover 6 after passing through the central through hole of the diaphragm group 4 with an axial bolt.

[0043] As needed, the inner region of the diaphragm assembly 4 near the innermost through hole is provided with weight reduction holes.

[0044] When the device is running at high speed:

[0045] The self-balancing characteristic of the herringbone gear 2 counteracts the axial force;

[0046] Diaphragm assembly 4 absorbs radial vibrations caused by uneven mass or assembly errors through elastic deformation;

[0047] The three-dimensional connection structure forms a stiffness gradient, with the outer edge rigidly fixed to ensure overall stability, and the inner edge and center elastic connection to achieve dynamic leveling.

[0048] This design significantly reduces noise and vibration, improves transmission accuracy, and reduces bearing friction loss.

[0049] The parts of this utility model not described in detail are prior art. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that this utility model can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the above embodiments should be regarded as exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description. Therefore, it is intended to include all changes that fall within the meaning and scope of the equivalents of the claims in this utility model, and no reference numerals in the claims should be regarded as limiting the content of the claims.

Claims

1. A balanced gear arrangement comprising a hub (1) and a gear (2) provided on an outer face of the hub (1), characterized in that: The inner side of the hub (1) is provided with a diaphragm assembly (4), a flange (5) and a cover (6) coaxial with it; the diaphragm assembly (4) is composed of multiple layers of superimposed elastic diaphragms (41), the outer edge of the diaphragm assembly (4) is connected to the hub (1) by at least one ring of fasteners, and the inner edge is clamped between the flange (5) and the cover (6) to form a rigid connection area; The cover (6) fixes the diaphragm assembly (4) through a three-tiered connection structure: The outer edge of the cover (6) is penetrated by at least two rings of fasteners through the cover (6), the diaphragm assembly (4) and the flange (5); The inner edge of the cover (6) is connected to the diaphragm assembly (4) by at least two turns of fasteners. The center of the cover (6) is connected to the center hole of the diaphragm assembly (4) by an axial fastener.

2. A balanced gear device according to claim 1, characterised in that: In the third-order connection structure: The fasteners on the outer edge of the cover (6) are bolt and nut sets, which pass through the through hole of the cover (6), the through hole of the diaphragm set (4) and the through hole of the flange (5); The fasteners on the inner edge of the cover (6) are bolts, which pass through the through hole of the diaphragm assembly (4) and are screwed into the threaded hole of the cover (6); The axial fastener at the center of the cover (6) is a bolt, which passes through the central through hole of the diaphragm assembly (4) and is screwed into the central threaded hole of the cover (6).

3. A balanced gear device according to claim 1, characterized in that: The fasteners on the outer edge of the cover (6) are staggered, and the outer diameter of the cover (6) is the same as the outer diameter of the flange (5).

4. A balanced gear device according to claim 1, characterized in that: The number of elastic diaphragms (41) is 12-18, and each elastic diaphragm (41) is provided with a coaxial mounting hole system corresponding to the three-stage connection structure.

5. A balanced gear device according to claim 1, characterized in that: The hub (1) has a radial convex ring (11) in the middle of its outer ring surface. There are two gears (2), which are symmetrically arranged on both sides of the radial convex ring (11) axially.

6. A balanced gear device according to claim 1, characterized in that: The diaphragm assembly (4) is provided with at least one ring of process holes (42), which are located in the area between the hub (1) and the cover (6).

7. A balanced gear device according to claim 1, characterized in that: The inner ring plate (12) is provided in the middle of the inner ring surface of the hub (1). The inner ring plate (12) and the cover (6) are located on the same side of the diaphragm group (4). The inner ring plate (12) is provided with a first annular step (13) and a second annular step (14) from the outside to the inside of the end face of the diaphragm group (4). The step surface of the first annular step (13) is attached to the outer edge side of the diaphragm assembly (4) and connected by at least one ring of fasteners; There is a gap between the second annular step (14) and the side of the diaphragm assembly (4).

8. A balanced gear device according to claim 1 or 5, characterised in that: The gear (2) is a herringbone gear and is connected to the hub (1) by a pin (3).

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