A centering detection device for a belt pulley

Abstract

The utility model relates to measuring tool technical field, concretely relates to a kind of centering detection device of pulley.The centering detection device includes connecting plate, and the two opposite sides of the connecting plate are respectively provided with first positioning part and second positioning part;The first positioning part is engaged with the gear of first pulley Positioning;The second positioning part is engaged with the gear of second pulley Positioning.The utility model has the beneficial effect that the centering detection device of pulley of the utility model, connecting plate can be inclined to different angles and then adapt to engage and position different distance first pulley and second pulley, and the engagement of first positioning part and second positioning part can detect the centering situation of two pulleys.

Description

Technical Field

[0001] This utility model relates to the field of measuring tool technology, specifically to a belt pulley alignment detection device. Background Technology

[0002] Belt drives are one of the most common transmission methods in the mechanical field, widely used in various mechanical equipment. In belt drive systems, the alignment of the pulleys is crucial. If the two pulleys are not aligned, i.e., their shafts are not parallel, uneven belt wear will occur during equipment operation, accelerating wear on both the pulleys and the belt. This will increase noise and vibration during equipment operation, and may even cause equipment shutdown, severely impacting the normal service life of the equipment.

[0003] Existing belt alignment methods use laser alignment, but this requires sufficient space to accommodate two laser alignment devices. This is particularly problematic for belt-driven water tanks in existing diesel generator sets. Due to their box-type installation, the height is kept as low as possible, resulting in a relatively low center of gravity for the water tank pulleys. When the distance between the water tank pulley and the engine pulley is less than 200mm, the space for laser alignment is insufficient. Therefore, most manufacturers use a ruler to directly align the upper and lower pulley edges, but this method is often inaccurate and prone to belt misalignment.

[0004] For example, CN216745984U discloses a pulley laser alignment device, including a transmitting device and a receiving device. It uses a magnetic structure to attach to the pulley and uses engraved lines to observe the angle and parallelism deviation to perform alignment verification on various belts. Although this patent has advantages such as high precision, energy saving, low vibration, and low noise, in practical applications, it still has problems such as an insufficiently compact structural design and limited applicability. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the shortcomings of insufficient space in the existing laser alignment method and low accuracy of the ruler comparison method, and to provide a high-precision belt pulley alignment detection device that can achieve high accuracy in a narrow space.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: a pulley alignment detection device is provided, which is used to detect whether two pulleys are aligned. The two pulleys are a first pulley and a second pulley. The alignment detection device includes a connecting plate, and a first positioning part and a second positioning part are respectively provided on two opposite sides of the connecting plate. The first positioning part is engaged with the teeth of the first pulley for positioning. The second positioning part is engaged with the teeth of the second pulley for positioning.

[0007] Furthermore, in the above-mentioned pulley alignment detection device, the first positioning part includes a first meshing member that meshes with the teeth of the first pulley and a first side plate disposed at both ends of the first meshing member for clamping the two sides of the first pulley.

[0008] The second positioning part includes a second engaging member that meshes with the teeth of the second pulley and a second side plate disposed at one end of the second engaging member and abutting against one side of the second pulley.

[0009] Furthermore, in the above-mentioned pulley alignment detection device, the first meshing member is provided with cam teeth that mesh with the gear teeth of the first pulley, and the cam teeth are elongated.

[0010] Furthermore, in the aforementioned pulley alignment detection device, the second meshing member is provided with cam teeth that mesh with the gear teeth of the second pulley, and the cam teeth are elongated.

[0011] Furthermore, in the aforementioned pulley alignment detection device, the length of the second meshing member in the length direction of the connecting plate is half the length of the connecting plate.

[0012] Furthermore, in the aforementioned pulley alignment detection device, the head of the cam tooth is semi-circular.

[0013] Furthermore, in the aforementioned pulley alignment detection device, the distance between adjacent cam teeth is an integer multiple of the distance between adjacent teeth of the first pulley.

[0014] Furthermore, in the aforementioned pulley alignment detection device, the distance between adjacent cam teeth is twice the distance between adjacent teeth of the first pulley.

[0015] Furthermore, in the aforementioned pulley alignment detection device, the length of the second side plate is greater than the length of the first side plate.

[0016] Furthermore, in the aforementioned pulley alignment detection device, the length of the second side plate is twice the length of the first side plate.

[0017] The beneficial effects of this utility model are as follows: The pulley alignment detection device of this utility model includes a connecting plate. The two opposite sides of the connecting plate are respectively provided with a first positioning part and a second positioning part. The connecting plate can be tilted at different angles to adapt to the meshing and positioning of the first pulley and the second pulley at different distances. When the distance between the first pulley and the second pulley is short, the connecting plate tilts at a larger angle and abuts between the first pulley and the second pulley. When the distance between the first pulley and the second pulley is long, the connecting plate tilts at a smaller angle and is located between the first pulley and the second pulley. The alignment of the two pulleys can be detected by the meshing of the first positioning part and the second positioning part. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the alignment detection device for a pulley according to a specific embodiment of the present invention.

[0019] Figure 2 This is a schematic diagram of the structure of the pulley alignment detection device in cooperation with the pulley according to a specific embodiment of the present invention;

[0020] Figure 3 for Figure 2 An enlarged view of part A in the middle diagram;

[0021] Figure 4 This is a schematic diagram of the alignment detection device for the pulley in cooperation with the pulley according to a specific embodiment of this utility model;

[0022] Figure 5 This is a schematic diagram of the alignment detection device for the pulley in cooperation with the pulley according to a specific embodiment of this utility model;

[0023] Label Explanation:

[0024] 1. Connecting plate;

[0025] 2. First positioning part; 21. First engaging part; 22. First side plate;

[0026] 3. Second positioning part; 31. Second engaging part; 32. Second side plate;

[0027] 4. Cam teeth;

[0028] 5. First pulley; 51. Gear teeth; 6. Second pulley. Detailed Implementation

[0029] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0030] In the installation of existing diesel generator sets with belt-driven water tanks, the installation height is kept as low as possible due to the requirements of box-type installation. In this case, the center of the water tank pulley is usually required to be relatively low, generally less than 200mm away from the engine pulley. Conventional laser alignment methods do not have enough operating space. This embodiment provides a device that can achieve high-precision pulley alignment detection in a confined space.

[0031] Please refer to Figures 1 to 3A pulley alignment detection device is disclosed, which is used to detect whether two pulleys are aligned. The two pulleys are a first pulley 5 and a second pulley 6. The alignment detection device includes a connecting plate 1, and a first positioning part 2 and a second positioning part 3 are respectively provided on two opposite sides of the connecting plate 1. The first positioning part 2 is engaged with the gear teeth 51 of the first pulley 5 for positioning. The second positioning part 3 is engaged with the gear teeth of the second pulley 6 for positioning.

[0032] The aforementioned pulley alignment detection device includes a connecting plate 1. A first positioning part 2 and a second positioning part 3 are respectively provided on two opposite sides of the connecting plate 1. The connecting plate 1 can be tilted at different angles to adapt to meshing with and positioning the first pulley 5 and the second pulley 6 at different distances. When the distance between the first pulley 5 and the second pulley 6 is short, the connecting plate 1 tilts at a larger angle and abuts between the first pulley 5 and the second pulley 6. When the distance between the first pulley 5 and the second pulley 6 is long, the connecting plate 1 tilts at a smaller angle and is positioned between the first pulley 5 and the second pulley 6. The alignment of the two pulleys can be detected by the meshing of the first positioning part 2 and the second positioning part 3.

[0033] Furthermore, the first positioning part 2 includes a first engaging member 21 that meshes with the teeth 51 of the first pulley 5 and a first side plate 22 disposed at both ends of the first engaging member 21 for clamping the two sides of the first pulley 5.

[0034] The second positioning part 3 includes a second engagement member 31 that meshes with the teeth of the second pulley 6 and a second side plate 32 disposed at one end of the second engagement member 31 abutting against one side of the second pulley 6.

[0035] As described above, the first positioning part 2 adopts a double-sided plate (concave) structure to adapt to the water tank pulley that can be completely enclosed, providing stable axial positioning. The second positioning part 3 adopts a single-sided plate structure to adapt to the engine pulley that is blocked on one side by the engine block, solving the problem that double-sided positioning is not possible on that side, and enhancing the practicality and applicability of the device.

[0036] Please see Figure 2 and Figure 3 Furthermore, the first meshing member 21 is provided with a cam tooth 4 that meshes with the gear teeth 51 of the first pulley 5, and the cam tooth 4 is elongated.

[0037] As described above, the elongated design provides precise meshing by engaging the raised cam tooth 4 with the pulley tooth groove, ensuring stable positioning.

[0038] Furthermore, the second meshing member 31 is provided with a cam tooth 4 that meshes with the gear teeth of the second pulley 6, and the cam tooth 4 is elongated.

[0039] As described above, the elongated design provides precise meshing by engaging the raised cam tooth 4 with the pulley tooth groove, ensuring stable positioning.

[0040] Furthermore, the length of the second engaging member 31 in the length direction of the connecting plate 1 is half the length of the connecting plate 1.

[0041] As described above, half of the meshing surface is sufficient for positioning, saving materials, reducing weight, and lowering production costs.

[0042] Furthermore, the head of the cam tooth 4 is semi-circular.

[0043] As described above, the semi-circular head facilitates smooth insertion into the tooth groove of the pulley and achieves tangential positioning, making the centering operation smoother and more precise, while avoiding scratching the gear teeth.

[0044] Furthermore, the distance between adjacent cam teeth 4 is an integer multiple of the distance between adjacent teeth of the first pulley 5.

[0045] As described above, this feature reduces the requirements for machining accuracy (it eliminates the need to machine protruding teeth in every tooth groove), making manufacturing easier.

[0046] Furthermore, the distance between adjacent cam teeth 4 is twice the distance between adjacent teeth of the first pulley 5.

[0047] As described above, this feature reduces the requirements for machining accuracy (it eliminates the need to machine protruding teeth in every tooth groove), making manufacturing easier.

[0048] Furthermore, the length of the second side plate 32 is greater than the length of the first side plate 22.

[0049] As described above, this feature makes it easier for the device to be stably and securely attached to the engine pulley, improving the feel of operation and making it easier to observe whether it is aligned.

[0050] Furthermore, the length of the second side plate 32 is twice the length of the first side plate 22.

[0051] As described above, this feature makes it easier for the device to be stably and securely attached to the engine pulley, improving the feel of operation and making it easier to observe whether it is aligned.

[0052] Example 1

[0053] Please see Figures 1 to 3 A pulley alignment detection device, which can be used to detect whether the water tank pulley (first pulley 5) and the engine pulley (second pulley 6) are aligned;

[0054] The alignment detection device includes a connecting plate 1, on which a first positioning part 2 and a second positioning part 3 are respectively provided on two opposite sides; the first positioning part 2 is engaged with the teeth of the first pulley 5 for positioning; the second positioning part 3 is engaged with the teeth of the second pulley 6 for positioning.

[0055] The first positioning part 2 includes a first engaging member 21 that meshes with the teeth of the first pulley 5 and first side plates 22 disposed at both ends of the first engaging member 21 for clamping the two sides of the first pulley 5; wherein the first side plates 22 on both sides and the first engaging member 21 form a U-shape to match the thickness of the water tank pulley.

[0056] The second positioning part 3 includes a second engaging member 31 that meshes with the teeth of the second pulley 6 and a second side plate 32 disposed at one end of the second engaging member 31 abutting against one side of the second pulley 6. The second side plate 32 is only provided on one side because only one side of the engine-end pulley is a free end. The other side is connected to the engine, and it is impossible to completely limit both ends with a concave structure, so the free end is retained for single-sided positioning, replacing the original ruler.

[0057] The first meshing member 21 and the second meshing member 31 are designed as gear cam teeth 4. These cam teeth 4 are made into long strips with a spacing equal to the distance between two teeth of the pulley, which reduces the density of the cam teeth 4 and facilitates processing. The width is positioned according to the center of the pulley teeth, and the head is made into a semi-circle. When positioning and installing, the tangent of the arc is used for limiting.

[0058] To ensure accuracy, the upper and lower teeth of the first meshing component 21 and the second meshing component 31 have identical and symmetrical structures. The alignment of the upper and lower pulleys is ensured by simultaneous engagement of the upper and lower teeth. This alignment device is made of 3mm stainless steel, uniformly formed by laser cutting, and its accuracy meets the requirement of ±0.05mm.

[0059] The distance between the upper and lower teeth of the first meshing member 21 and the second meshing member 31 of the above-mentioned pulley alignment detection device is determined according to the maximum required spacing between the two alignment pulleys. When the spacing is at its maximum, the alignment device is placed vertically. However, when the spacing between the two pulleys is small, the measurement method adopts the tilt principle. Ultimately, it is necessary to ensure that the upper and lower teeth of the alignment device are in contact with the teeth of the upper and lower pulleys.

[0060] Please see Figure 4 and Figure 5 This is a schematic diagram illustrating the usage of the aforementioned pulley alignment detection device when it is adapted to mesh with and positioned at different distances from the first pulley 5 and the second pulley 6.

[0061] Figure 4 When the distance between the first pulley 5 and the second pulley 6 is short, the connecting plate 1 will be inclined at a larger angle and abut against the first pulley 5 and the second pulley 6.

[0062] Figure 5 When the distance between the first pulley 5 and the second pulley 6 is long, the connecting plate 1 is tilted at a small angle and almost vertically abuts against the first pulley 5 and the second pulley 6. The alignment of the two pulleys can be detected by the meshing of the first positioning part 2 and the second positioning part 3.

[0063] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A pulley alignment detection device, used to detect whether two pulleys are aligned, wherein the two pulleys are a first pulley and a second pulley, characterized in that, The alignment detection device includes a connecting plate, on which a first positioning part and a second positioning part are respectively provided on two opposite sides; the first positioning part engages with the teeth of the first pulley for positioning; the second positioning part engages with the teeth of the second pulley for positioning.

2. The alignment detection device for a pulley according to claim 1, characterized in that, The first positioning part includes a first engaging member that meshes with the teeth of the first pulley and a first side plate disposed at both ends of the first engaging member for clamping the two sides of the first pulley. The second positioning part includes a second engaging member that meshes with the teeth of the second pulley and a second side plate disposed at one end of the second engaging member and abutting against one side of the second pulley.

3. The alignment detection device for a pulley according to claim 2, characterized in that, The first meshing member is provided with cam teeth that mesh with the teeth of the first pulley, and the cam teeth are elongated.

4. The alignment detection device for a pulley according to claim 2, characterized in that, The second meshing member is provided with cam teeth that mesh with the teeth of the second pulley, and the cam teeth are elongated.

5. The alignment detection device for a pulley according to claim 4, characterized in that, The length of the second engaging member in the length direction of the connecting plate is half the length of the connecting plate.

6. The alignment detection device for a pulley according to claim 4, characterized in that, The head of the cam tooth is semi-circular.

7. The alignment detection device for a pulley according to claim 4, characterized in that, The distance between adjacent cam teeth is an integer multiple of the distance between adjacent teeth of the first pulley.

8. The alignment detection device for a pulley according to claim 4, characterized in that, The distance between adjacent cam teeth is twice the distance between adjacent teeth of the first pulley.

9. The alignment detection device for a pulley according to claim 2, characterized in that, The length of the second side plate is greater than the length of the first side plate.

10. The alignment detection device for a pulley according to claim 2, characterized in that, The length of the second side plate is twice the length of the first side plate.

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