Supporting and leveling mechanism and supporting device

Abstract

The utility model provides a supporting and leveling mechanism and a supporting device, and belongs to the technical field of supporting devices. The problems that in the prior art, a rotating shaft is difficult to support and level, low in efficiency and prone to damage are solved. The supporting and leveling device comprises a V-shaped pad, the upper surface of the V-shaped pad is provided with a V-shaped groove, and slopes on the left side and the right side of the V-shaped groove are suitable for being in contact with a rotating shaft to be supported; the base is used for bearing the V-shaped pad, the base is connected to the lower surface of the V-shaped pad, and the bottom of the base is suitable for being connected with a jacking device; the dial indicator is used for detecting the jacking height difference of the left side and the right side of the rotating shaft and is connected to the base or the V-shaped pad; and the position adjusting piece is used for adjusting the horizontal position of the V-shaped pad and is connected between the base and the V-shaped pad. The leveling device has the advantages of efficiently leveling the rotating shaft and being convenient and fast to maintain.

Description

Technical Field

[0001] This utility model relates to the field of support device technology, specifically a device for supporting and leveling the shaft of rotating equipment such as large motors, generators, and fans. It is particularly suitable for shaft lifting and leveling operations during motor bearing open-bearing maintenance, enabling uniform lifting of both sides of the shaft and improving maintenance efficiency. Background Technology

[0002] In industrial production, the maintenance of bearings on large rotating equipment (such as the main motor of the finishing mill in a hot rolling mill) is a crucial task. Currently, when inspecting the bearings of the main motor in the finishing mill of a hot rolling mill, the common practice is to directly lift the motor rotor shaft using column support. However, this existing technology has significant drawbacks: the difficulty in precisely positioning the support points between the shaft and the column leads to inconsistent lifting heights on the left and right sides of the shaft, resulting in an imbalance in the bearing clearance and uneven stress on both sides. In such cases, the bearing may become difficult to slide or even jam due to excessive stress on one side. To remove the lower bearing, maintenance personnel must repeatedly adjust the lifting clearance on both sides, typically four to five times or even more, with each bearing removal operation taking 4-5 hours, severely impacting work efficiency. Furthermore, traditional support methods lack protection for the shaft surface, making it prone to scratch damage during contact, and they cannot monitor the difference in lifting height on both sides in real time. The leveling process relies on manual experience, making it difficult to guarantee accuracy.

[0003] To address the aforementioned issues, a support device is needed that can quickly level the shaft, protect the shaft surface, and monitor the height difference in real time, in order to solve problems such as support point misalignment, low leveling efficiency, and easy damage to the shaft in existing technologies. Utility Model Content

[0004] The purpose of this utility model is to provide a support and leveling mechanism, which enables precise control of the lifting height on both sides of the rotating shaft, reduces the number of leveling operations, and improves maintenance efficiency; at the same time, it protects the surface of the rotating shaft from damage and ensures the leveling accuracy through real-time monitoring, thus solving the problems of support point misalignment, long leveling time, and easy scratching of the rotating shaft in the prior art.

[0005] This utility model can be achieved through the following technical solutions:

[0006] A leveling support mechanism, comprising:

[0007] A V-shaped pad, the upper surface of which is provided with a V-shaped groove, the inclined surfaces on the left and right sides of which are adapted to contact the rotating shaft to be supported; a base for supporting the V-shaped pad, the base being connected to the lower surface of the V-shaped pad, and the bottom of the base being adapted to be connected to a lifting mechanism; a dial indicator for detecting the height difference between the left and right sides of the rotating shaft being lifted, the dial indicator being connected to the base or the V-shaped pad; and an adjusting component for adjusting the horizontal position of the V-shaped pad, the adjusting component being connected between the base and the V-shaped pad.

[0008] The aforementioned support and leveling mechanism also includes rolling support wheels, which are placed between the base and the V-shaped pad, and at least two rolling support wheels are provided.

[0009] In the aforementioned support and leveling mechanism, at least two adjusting components are provided, located on the left and right sides of the V-shaped pad respectively, and are connected to the base by threads and in contact with the V-shaped pad.

[0010] In the aforementioned support and leveling mechanism, a scratch-resistant pad is also included to protect the surface of the rotating shaft. The scratch-resistant pad is fixedly connected to the surface of the V-groove of the V-shaped pad.

[0011] In the aforementioned support and leveling mechanism, the dial indicator is fixed to the base or the V-shaped pad by fasteners. The dial indicator is provided with two measuring contacts, which respectively abut against the left and right sides of the rotating shaft.

[0012] In one of the above-mentioned support and leveling mechanisms, a guide groove suitable for connecting with the rolling support wheel is provided on the base, and the guide groove extends from one end of the base to the other end of the base.

[0013] In the aforementioned support and leveling mechanism, the guide groove and the rolling support wheel are in clearance fit.

[0014] In the aforementioned support and leveling mechanism, spherical grooves are provided on the left and right sides of the V-shaped pad, and the adjusting component is provided with spherical contacts, which contact the spherical grooves of the V-shaped pad.

[0015] In the aforementioned support and leveling mechanism, the included angle of the V-groove of the V-shaped pad is 120°.

[0016] This utility model also provides a support device, including:

[0017] The aforementioned support and leveling mechanism;

[0018] A lifting mechanism for lifting the supporting leveling mechanism, the lifting mechanism being connected to the bottom of the base.

[0019] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0020] 1. Highly efficient leveling and precise positioning

[0021] By combining the V-shaped pad and the rolling support wheel with the fine-tuning function of the adjusting component, the horizontal position of the rotating shaft can be quickly adjusted. When the adjustment amount is large, the adjusting component is directly rotated to push the V-shaped pad to move horizontally; when the adjustment amount is small, the low-friction characteristics of the rolling support wheel and the lubricating oil allow the V-shaped pad to automatically adapt to slight tilts, reducing manual intervention. A dial indicator monitors the height difference between the two sides in real time, avoiding leveling based on experience and reducing the traditional 4-5 repeated adjustments to 1-2 times. The tile-opening operation time is shortened from 4-5 hours to 1.5 hours, improving efficiency by more than 60%.

[0022] 2. The V-groove surface of the shaft is covered with anti-scratch pads, which can withstand the weight of the shaft of 20-30t and can also fit the shaft surface through elastic deformation to avoid scratch damage caused by direct metal contact, thus extending the service life of the shaft.

[0023] 3. Compact structure and easy maintenance

[0024] The rolling support wheel and the base guide groove are fitted with a clearance fit. After wear, it can be pulled out from one side of the base for direct replacement without disassembling the entire device, resulting in low maintenance costs.

[0025] 4. Safe and reliable

[0026] The spherical contact of the adjusting component mates with the spherical groove of the V-shaped pad to form a universal contact, allowing the V-shaped pad to rotate freely within a small angle range, avoiding stress concentration caused by rigid connection and improving the stability of the device. Attached Figure Description

[0027] Figure 1 This is a front view of the structure of a support and leveling mechanism according to this utility model.

[0028] Figure 2 This is a top view of the structure of a support and leveling mechanism of this utility model.

[0029] In the diagram, 10 is a V-shaped pad; 20 is a base; 30 is an adjustment component; 40 is a rolling support wheel; 50 is a scratch-resistant pad; 60 is a dial indicator; and 70 is a rotating shaft. Detailed Implementation

[0030] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0031] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0032] like Figure 1 and Figure 2 As shown, the present invention provides a support and leveling mechanism, comprising:

[0033] V-shaped pad (10), the upper surface of the V-shaped pad (10) is provided with a V-shaped groove with an included angle of 120°, and the inclined surfaces on the left and right sides of the V-shaped groove are suitable for contacting the rotating shaft (70) to be supported;

[0034] The base (20) is used to support the V-shaped pad (10). The base (20) is provided with a groove for supporting the V-shaped pad (10). A guide groove is provided at the bottom of the groove. Threaded holes are provided on the groove walls on the left and right sides near the V-shaped pad (10). The base (20) is connected to the lower surface of the V-shaped pad (10). The bottom of the base (20) is suitable for connection with the lifting mechanism.

[0035] Adjusting component (30) is used to adjust the horizontal position of V-shaped pad (10). The adjusting component (30) is threadedly connected to the base through the threaded hole of the base.

[0036] The rolling support wheel (40) is placed in the guide groove between the base (20) and the V-shaped pad (10), and there are 3 rolling support wheels (40);

[0037] A scratch-resistant pad (50) is used to protect the surface of the rotating shaft (70). The scratch-resistant pad (50) is fixedly connected to the upper surface of the V-groove of the V-shaped pad (10).

[0038] A dial indicator (60) is used to detect the height difference between the left and right sides of the rotating shaft (70). The dial indicator (60) is fixed to the base (20) or V-shaped pad (10) by fasteners. The dial indicator (60) is provided with two measuring contacts, which respectively abut against the left and right sides of the rotating shaft (70).

[0039] The usage method for this example is as follows:

[0040] During the bearing shell opening construction, the lifting mechanism is placed at the bottom of the base (20). The supporting leveling mechanism is placed below the rotating shaft (70) through the lifting mechanism. At this time, the lifting mechanism lifts the supporting leveling mechanism together with the rotating shaft (70) to a suitable position. In this example, the rotating shaft is lifted by 0.18mm, and then the lower bearing shell is pulled out. The more accurately the center of the V-groove is aligned with the center of the rotating shaft (70), the smaller the height difference between the left and right sides of the rotating shaft (70) after lifting. Due to the error caused by manual operation, the center of the V-groove will not be completely aligned with the center of the rotating shaft (70). If the height difference error on both sides exceeds 10%, the bearing shell gap on the left and right sides of the rotating shaft will be unbalanced, resulting in uneven force on the left and right sides of the bearing shell. In this case, the bearing shell may be difficult to slide due to excessive force on one side, or even jammed. Observe the reading of the dial indicator (60), rotate the adjusting part (30) to adjust the horizontal position of the V-shaped pad (10) until the lifting height difference on both sides of the rotating shaft (70) meets the requirements (error ≤ 10%). During the leveling process, the rolling support wheel (40) rolls in the guide groove, reducing frictional resistance and improving the ease of leveling.

[0041] Preferably, the 120° V-groove design is preferred due to its geometric compatibility with the cylindrical rotating shaft (70) and its advantages in support and leveling.

[0042] The 120° included angle allows the V-groove to form a symmetrical line contact with the outer circle of the rotating shaft (70), conforming to the characteristics of the cylindrical curved surface, naturally constraining the rotating shaft (70) to be centered, avoiding the risk of single-point offset or rolling of the planar support, and ensuring stable initial positioning. At this angle, the weight of the rotating shaft (70) is evenly distributed to both sides of the V-shape, reducing local stress concentration, and can effectively protect the surface of the rotating shaft (70) when used with the anti-scratch pad (50).

[0043] From the perspective of the leveling mechanism, the 120° V-shaped structure provides symmetrical force fulcrums for the two side adjustment parts (30). When the V-shaped pad moves horizontally, the force transmission is balanced. Combined with the low friction characteristics of the bottom rolling support wheel (40), it can quickly adjust large offsets with screws, and can also achieve automatic leveling by using the smooth surface and lubricating oil when making small adjustments.

[0044] In addition, 120° is a classic angle in engineering design that balances support strength and leveling flexibility. Compared with other angles (such as 90° which is prone to stress concentration and 150° which is not stable enough), the 120° V-groove achieves the best balance between support reliability, leveling convenience and protection of the rotating shaft (70).

[0045] Preferably, two adjusting parts (30) are used to achieve precise and stable leveling control through symmetrical layout and coordinated force application: the two screws are respectively set on the left and right sides of the V-shaped pad (10) and form symmetrical fulcrums in contact with the spherical groove. Compared with the limited unidirectional adjustment of a single screw, the double screws can achieve bidirectional fine adjustment. At the same time, the double screws and the bottom rolling support wheel (40) form a multi-point support structure to distribute the load, reduce single-point force wear, and ensure smooth force transmission and avoid jamming by combining with the spherical contact's swing adaptability.

[0046] Preferably, this device has three rolling support wheels (40) between the base (20) and the V-shaped pad, which has the following advantages:

[0047] It facilitates the replacement of the rolling support wheel (40): The base (20) has a guide groove that extends from one end of the base (20) to the other end, and it is clearance-fitted with the rolling support wheel (40). When the surface of the support wheel wears down due to long-term use, there is no need to disassemble the entire device. The old wheel can be directly pulled out from one side of the base (20) and the new wheel can be installed to complete the replacement, which greatly simplifies the maintenance process and shortens the maintenance time. This modular design avoids the cumbersome disassembly problem of the traditional integral support structure and improves the maintainability of the device.

[0048] The rolling support wheel (40) replaces sliding friction with rolling friction, reducing the resistance between the V-shaped pad (10) and the base (20), making the leveling process more labor-saving and efficient. When the adjustment amount is large, the V-shaped pad (10) can be driven to slide quickly on the support wheel through the adjusting component (30); when the adjustment amount is small, automatic fine-tuning and leveling can be achieved with the smooth surface of the lubricating oil. In addition, it avoids wear caused by direct contact between the V-shaped pad (10) and the base (20), extending the service life of the device. This design effectively solves the problems of high leveling resistance and complex maintenance of existing support structures through its low friction and easy maintenance characteristics.

[0049] Preferably, the anti-scratch pad (50) in this device is fixed to the upper surface of the V-groove of the V-shaped pad (10) and is made of soft plastic rubber. During lifting, the soft rubber can effectively buffer the force between the V-shaped pad (10) and the rotating shaft (70), avoid direct metal contact, prevent scratches and wear on the surface of the rotating shaft (70), and reduce the risk of equipment failure. Moreover, its installation method is simple, directly fixed to the V-shaped pad (10), and easy to replace. This design of the anti-scratch pad (50) does not affect the support effect of the V-shaped pad (10) on the rotating shaft (70), and provides additional reliable protection, thereby improving the service life of the equipment rotating shaft (70).

[0050] Preferably, a dial indicator (60) is used in this support and leveling mechanism to achieve precise leveling. The dial indicator (60) is connected to the base (20) or V-shaped pad (10) by fasteners. It is designed with two measuring contacts that abut against the left and right sides of the rotating shaft (70) respectively. This design can accurately detect the height difference between the left and right sides of the rotating shaft (70) in real time, providing intuitive and accurate data support for the leveling operation. It ensures strict control of the height difference during the leveling process, so that the height error on both sides can be controlled within 10%, which meets the high precision requirements of leveling the rotating shaft (70) of large rotating equipment. In actual operation, by observing the changes in the reading of the dial indicator (60), the operator can clearly understand the height difference between the two sides of the rotating shaft (70), and then adjust the adjusting component (30) based on these data. When the dial indicator (60) shows a height deviation on both sides, the staff can rotate the adjustment part (30) in a targeted manner to push the V-shaped pad (10) to move horizontally, thereby achieving precise adjustment of the lifting height of the rotating shaft (70) and improving the efficiency and accuracy of leveling.

[0051] This utility model also provides a support device, including the above-mentioned support and leveling mechanism and a lifting mechanism (such as a jack, hydraulic lifting equipment, etc.). The lifting mechanism is connected to the bottom of the base (20) and provides lifting power for the support and leveling mechanism. In the maintenance of large motor shafts, the support and leveling mechanism is lifted to the required height by the lifting mechanism. The adjustment part (30) is used in conjunction with the dial indicator (60) to quickly adjust the horizontal position of the V-shaped pad (10) to achieve uniform lifting on both sides, ensure the balance of the bearing clearance, and improve the efficiency of bearing opening operation.

[0052] It should be noted that in this utility model, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of those features. In the description of this utility model, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly defined. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly defined. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0053] Furthermore, the technical solutions of the various embodiments of this utility model can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0054] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A support levelling mechanism characterised in that, include: V-shaped pad (10), the upper surface of which is provided with a V-shaped groove, the inclined surfaces on the left and right sides of which are adapted to contact the rotating shaft (70) to be supported; a base (20) for supporting the V-shaped pad (10), the base (20) being connected to the lower surface of the V-shaped pad (10), and the bottom of the base (20) being adapted to be connected to the lifting mechanism; a dial indicator (60) for detecting the height difference between the left and right sides of the rotating shaft (70), the dial indicator (60) being connected to the base (20) or the V-shaped pad (10); an adjusting member (30) for adjusting the horizontal position of the V-shaped pad (10), the adjusting member (30) being connected between the base (20) and the V-shaped pad (10).

2. The support and leveling mechanism according to claim 1, characterized in that, It also includes rolling support wheels (40), which are placed between the base (20) and the V-shaped pad (10), and there are at least two rolling support wheels (40).

3. The support leveling mechanism of claim 1, wherein, At least two adjustment components (30) are provided, located on the left and right sides of the V-shaped pad (10) respectively, and are connected to the base (20) by threads and in contact with the V-shaped pad (10).

4. The support leveling mechanism of claim 1, wherein, It also includes a scratch-resistant pad (50) for protecting the surface of the shaft (70), the scratch-resistant pad (50) being fixedly connected to the surface of the V-groove of the V-shaped pad (10).

5. The support leveling mechanism of claim 1, wherein, The dial indicator (60) is fixed to the base (20) or the V-shaped pad (10) by fasteners. The dial indicator (60) is provided with two measuring contacts, which respectively abut against the left and right sides of the rotating shaft (70).

6. The support leveling mechanism of claim 2, wherein, The base (20) is provided with a guide groove suitable for connection with the rolling support wheel (40), the guide groove extending from one end of the base (20) to the other end.

7. The support leveling mechanism of claim 6, wherein, The guide groove and the rolling support wheel (40) are in clearance fit.

8. The support leveling mechanism of claim 3, wherein, The V-shaped pad (10) has spherical grooves on its left and right sides, and the adjusting member (30) has spherical contacts that contact the spherical grooves of the V-shaped pad (10).

9. The support leveling mechanism of claim 1, wherein, The included angle of the V-groove of the V-shaped pad (10) is 120°.

10. A support device characterized by, include: The support and leveling mechanism according to any one of claims 1 to 9; A lifting mechanism for lifting the support leveling mechanism, the lifting mechanism being connected to the bottom of the base (20).

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