A device for detecting the thickness of a washer of a nut sub

Abstract

The utility model discloses a kind of secondary nut seat gasket thickness detection devices, it is related to the technical field of precision detection of parts and components.The utility model includes installation box, installation box side is provided with mounting plate, and the mounting plate side is provided with support plate;The support plate side is provided with detection mechanism, and detection mechanism includes support seat and base at the top and bottom respectively fixed in the support plate by mounting bolt.The utility model is provided with leveling mechanism, utilizes bubble instrument to indicate horizontal state, and through screwing adjusting bolt, the horizontal state of detection mechanism can be quickly adjusted, it is guaranteed that measurement axis and the measured plane are perpendicular, avoid the system error introduced due to uneven surface, significantly improve detection accuracy, the elastic cooperation of probe and first spring in detection mechanism, so that probe can automatically adjust position with gasket surface fluctuation, displacement change is quantitatively displayed in real time by micrometer, without manual repeated comparison, realize measurement.

Description

Technical Field

[0001] This utility model belongs to the field of precision testing technology for parts and components, and in particular relates to a device for detecting the thickness of a secondary nut seat washer. Background Technology

[0002] In the field of mechanical assembly, especially in the assembly of high-precision transmission systems, the assembly accuracy of the secondary nut seat is crucial. To ensure the preload and locking effect of the secondary nut, an adjusting shim of a specific thickness is usually installed between the secondary nut and the support seat. The choice of shim thickness directly affects the locking torque of the secondary nut and the smoothness and reliability of the entire transmission component.

[0003] Currently, the thickness of such gaskets is mostly measured manually using general measuring tools such as vernier calipers or plug gauges. During measurement, the gasket needs to be placed on the mounting surface of the secondary nut seat before measurement. However, the mounting space for the secondary nut seat is often limited, and its mounting surface may not be ideally level after assembly. Using general measuring tools is not only inconvenient and inefficient, but more importantly, due to the lack of effective benchmark leveling methods, it is difficult to ensure that the axis of the measuring probe or gauge is perpendicular to the gasket measuring surface. This easily leads to data distortion and poor measurement repeatability due to tilted measurements. This directly affects the accuracy of subsequent gasket selection and may result in improper preload of the secondary nut after assembly, causing equipment malfunctions.

[0004] To address this issue, we provide a device for detecting the thickness of the secondary nut seat washer. Utility Model Content

[0005] The purpose of this invention is to provide a device for detecting the thickness of a secondary nut seat washer. By coordinating the leveling mechanism and the detection mechanism, this invention solves the problems of large errors and low efficiency in existing secondary nut seat washer thickness detection devices due to non-level reference.

[0006] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution.

[0007] This utility model relates to a device for detecting the thickness of a secondary nut seat washer, comprising a mounting box, a mounting plate on one side of the mounting box, and a support plate on one side of the mounting plate; a detection mechanism is provided on one side of the support plate, the detection mechanism including a support seat fixed to the top and a base on the bottom of the support plate by mounting bolts, a probe disposed in the inner cavity of the base, a first spring sleeved on the surface of the probe, and a dial indicator disposed on the top of the support seat; a leveling mechanism is provided on one side of the mounting plate, the leveling mechanism including a mounting groove formed on one side of the mounting plate, a bolt hole formed at the bottom of the mounting groove, an adjusting bolt threaded to the inner cavity of the bolt hole, and a bubble meter disposed on the top of the support plate.

[0008] The present invention is further configured such that the inner cavity of the mounting box is threadedly connected to a threaded rod via a bearing seat, the surface of the threaded rod is threadedly connected to a threaded sleeve, and a limit block is fixedly connected to the surface of the threaded sleeve.

[0009] The present invention is further configured such that one side of the limiting block is fixedly connected to one side of the mounting plate, and one side of the mounting box is provided with a limiting groove adapted to the limiting block.

[0010] The present invention is further configured such that a retaining ring is fixedly connected to the surface of the probe, and the top of the probe contacts the bottom of the dial indicator.

[0011] The present invention is further configured such that a second spring is fixedly connected to the inner cavity of the mounting groove, and the other end of the second spring is fixedly connected to the top of the support plate.

[0012] The present invention is further configured such that the support plate is rotatably connected to the inner cavity of the mounting groove via a pin.

[0013] The present invention is further configured such that the base, the support plate and the support seat are all provided with circular grooves on their surfaces, and the diameter of the circular grooves is larger than the diameter of the probe.

[0014] The present invention has the following beneficial effects.

[0015] 1. This utility model uses a leveling mechanism to indicate the horizontal state with a bubble level, and the horizontal state of the detection mechanism can be quickly adjusted by turning the adjusting bolt. This ensures that the measuring axis is perpendicular to the plane being measured, avoids systematic errors caused by uneven surfaces, and significantly improves detection accuracy. The elastic cooperation between the probe and the first spring in the detection mechanism allows the probe to automatically adjust its position according to the undulations of the pad surface. The displacement change is displayed in real time by a dial indicator, eliminating the need for repeated manual comparison and enabling measurement.

[0016] 2. This utility model, through the lifting structure of the threaded rod and threaded sleeve, combined with the guiding constraint of the limiting block and limiting groove, can smoothly adjust the overall height of the detection mechanism, adapt to the detection needs of the secondary nut seat in different installation positions, and expand the scope of application.

[0017] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0019] Figure 1 This is a perspective view of a device for detecting the thickness of a secondary nut seat washer.

[0020] Figure 2 This is a diagram showing the fit between the support base, base, and dial indicator in a device for measuring the thickness of a secondary nut seat washer.

[0021] Figure 3 This is a cross-sectional view of the base in a device for detecting the thickness of a secondary nut seat washer.

[0022] Figure 4 This is a diagram showing the fit between the adjusting bolt, support plate, and second spring in a device for detecting the thickness of a secondary nut seat washer.

[0023] Figure 5 This is a cross-sectional view of the mounting box in a device for detecting the thickness of a secondary nut seat washer.

[0024] In the attached diagram: 1. Mounting box; 2. Mounting plate; 3. Support plate; 4. Support base; 5. Base; 6. Probe; 7. First spring; 8. Dial indicator; 9. Mounting groove; 10. Bolt hole; 11. Adjusting bolt; 12. Bubble meter; 13. Threaded rod; 14. Threaded sleeve; 15. Limiting block; 16. Limiting groove; 17. Retaining ring; 18. Second spring; 19. Circular groove. Detailed Implementation

[0025] The technical solutions of the present utility model will be described below with reference to the accompanying drawings. The described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0026] Example 1

[0027] Please see Figures 1-5 This utility model is a device for detecting the thickness of a secondary nut seat washer, including a mounting box 1, a mounting plate 2 on one side of the mounting box 1, and a support plate 3 on one side of the mounting plate 2; a detection mechanism is provided on one side of the support plate 3, the detection mechanism including a support seat 4 fixed to the top of the support plate 3 and a base 5 fixed to the bottom of the support plate 3 by mounting bolts, a probe 6 disposed in the inner cavity of the base 5, a first spring 7 sleeved on the surface of the probe 6, and a dial indicator 8 disposed on the top of the support seat 4; a leveling mechanism is provided on one side of the mounting plate 2, the leveling mechanism including a mounting groove 9 opened on one side of the mounting plate 2, a bolt hole 10 opened at the bottom of the mounting groove 9, an adjusting bolt 11 threadedly connected to the inner cavity of the bolt hole 10, and a bubble meter 12 disposed on the top of the support plate 3.

[0028] Further details: Rotating the threaded rod 13 drives the mounting plate 2 to rise and fall smoothly as a whole. The support plate 3 is rotatably connected to the inner cavity of the mounting groove 9 via a pin, forming the fulcrum of the leveling mechanism. The bottom of the mounting groove 9 has bolt holes 10, into which the adjusting bolt 11 is screwed, with its top end resting on the back of the support plate 3. A second spring 18 is also fixed inside the mounting groove 9, with its other end fixed to the support plate 3, providing upward elastic support for the support plate 3. The bubble meter 12 is used to indicate its horizontal state. The first spring 7 is located between the retaining ring 17 and the stepped surface of the inner cavity of the base 5, providing a continuous downward elastic force to the probe 6, so that the probe at its bottom always tends to protrude downwards. A dial indicator 8 is fixed to the top of the support base 4 through its mounting interface, and the measuring rod of the dial indicator 8 is in direct contact with the top of the probe 6.

[0029] Example 2

[0030] Please see Figures 1-5 Based on embodiment 1, the inner cavity of the mounting box 1 is threaded with a threaded rod 13 through a bearing seat. A threaded sleeve 14 is threaded on the surface of the threaded rod 13. A limit block 15 is fixedly connected to the surface of the threaded sleeve 14. One side of the limit block 15 is fixedly connected to one side of the mounting plate 2. A limit groove 16 adapted to the limit block 15 is opened on one side of the mounting box 1. A retaining ring 17 is fixedly connected to the surface of the probe 6. The top of the probe 6 contacts the bottom of the dial indicator 8. A second spring 18 is fixedly connected to the inner cavity of the mounting groove 9. The other end of the second spring 18 is fixedly connected to the top of the support plate 3. The support plate 3 is rotatably connected to the inner cavity of the mounting groove 9 through a pin. A circular groove 19 is opened on the surface of the base 5, the support plate 3 and the support seat 4. The diameter of the circular groove 19 is larger than the diameter of the probe 6.

[0031] Further details: By rotating the threaded rod 13, the threaded sleeve 14 and the entire measurement module (mounting plate 2, support plate 3, and detection mechanism) connected to it can be smoothly raised and lowered to adapt to different working environments or measured objects. The cooperation between the limiting groove 16 and the limiting block 15 effectively prevents the mounting plate 2 from rotating during the raising and lowering process, ensuring the stability and straightness of the raising and lowering process. The top of the probe 6 directly contacts the measuring rod of the dial indicator 8, ensuring that the displacement can be accurately transmitted. The second spring 18 provides an upward supporting force for the support plate 3, which is balanced with the downward tightening force of the adjusting bolt 11. This design makes the leveling operation more stable and precise, and can assist the support plate 3 in resetting after the adjusting bolt 11 is loosened. The pin shaft constitutes the rotation fulcrum of the leveling mechanism, allowing the support plate 3 to make slight pitch rotation around the pin shaft, thereby achieving precise leveling of the detection mechanism relative to the measured plane. The circular groove 19 provides radial movement space for the probe 6, preventing the probe 6 from rubbing against the components during compression or resetting, reducing wear and improving measurement sensitivity.

[0032] The working principle of this utility model is as follows: Move the device to the vicinity of the secondary nut seat installation position. Observe the bubble meter 12 on the support plate 3, rotate the adjusting bolt 11, and finely adjust the pitch angle of the support plate 3 by adjusting the screw depth of the bolt 11 until the bubble meter 12 shows horizontal, ensuring that the reference plane for subsequent measurement is perpendicular to the motion axis of the detection mechanism.

[0033] Rotate the threaded rod 13 to lower the entire detection mechanism, allowing the probe 6 to contact a reference block of known height (or a flat mounting surface of the secondary nut seat without a shim). Continue to press down slightly, and the probe 6 will move upward under pressure, compressing the first spring 7. Its displacement is transmitted to the probe of the dial indicator 8 through the top, causing the dial indicator 8 needle to rotate. At this time, the dial reading of the dial indicator 8 is returned to zero. This state is the reference zero point for measuring thickness.

[0034] Place the shim to be tested into the mounting position of the secondary nut seat, so that the probe 6 rests on the surface of the shim. Due to the presence of the shim, the probe 6 will be lifted to an additional height compared to the reference state. At this time, the reading displayed on the dial indicator 8 is the actual thickness value of the shim to be tested. The operator can directly select or process a shim of the corresponding thickness for assembly based on this reading.

[0035] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for detecting the thickness of a secondary nut seat washer, comprising a mounting box (1), characterized in that: The mounting box (1) is provided with a mounting plate (2) on one side, and a support plate (3) is provided with a support plate (3) on one side of the mounting plate (2); A detection mechanism is provided on one side of the support plate (3). The detection mechanism includes a support seat (4) fixed to the top of the support plate (3) and a base (5) fixed to the bottom by mounting bolts, a probe (6) set in the inner cavity of the base (5), a first spring (7) sleeved on the surface of the probe (6), and a dial indicator (8) set on the top of the support seat (4). A leveling mechanism is provided on one side of the mounting plate (2). The leveling mechanism includes a mounting groove (9) on one side of the mounting plate (2), a bolt hole (10) at the bottom of the mounting groove (9), an adjusting bolt (11) threadedly connected to the inner cavity of the bolt hole (10), and a bubble meter (12) on the top of the support plate (3).

2. The device for detecting the thickness of a secondary nut seat washer according to claim 1, characterized in that: The inner cavity of the mounting box (1) is connected to a threaded rod (13) via a bearing seat. A threaded sleeve (14) is threadedly connected to the surface of the threaded rod (13). A limit block (15) is fixedly connected to the surface of the threaded sleeve (14).

3. The device for detecting the thickness of a secondary nut seat washer according to claim 2, characterized in that: One side of the limiting block (15) is fixedly connected to one side of the mounting plate (2), and one side of the mounting box (1) is provided with a limiting groove (16) that is compatible with the limiting block (15).

4. The device for detecting the thickness of a secondary nut seat washer according to claim 1, characterized in that: A retaining ring (17) is fixedly connected to the surface of the probe (6), and the top of the probe (6) contacts the bottom of the dial indicator (8).

5. The device for detecting the thickness of a secondary nut seat washer according to claim 1, characterized in that: The inner cavity of the mounting groove (9) is fixedly connected to a second spring (18), and the other end of the second spring (18) is fixedly connected to the top of the support plate (3).

6. The device for detecting the thickness of a secondary nut seat washer according to claim 1, characterized in that: The support plate (3) is rotatably connected to the inner cavity of the mounting groove (9) via a pin.

7. The device for detecting the thickness of a secondary nut seat washer according to claim 1, characterized in that: The base (5), the support plate (3) and the support seat (4) are all provided with circular grooves (19), and the diameter of the circular grooves (19) is larger than the diameter of the probe (6).

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