Hook center detection tool

Abstract

The utility model relates to hoist auxiliary equipment technical field especially, it relates to a kind of hook center detection tool, including pedestal, the horizontal slot and vertical slot of vertical intersection distribution are provided on the pedestal, the upper surface of the pedestal is provided with jack support, the horizontal slot is provided with the alignment plate in the vertical slot both sides, the side wall of one alignment plate is provided with center scribing block, the vertical slot is provided with center column, the one side of the center column is provided with the laser square that is used in cooperation with center scribing block, the other side is provided with the ranging module for, utilize symptomatic block can quickly confirm hook handle diameter, to determine center line then the straightness of hook handle will be adjusted, then again utilize center column to detect whether hook nest and hook handle are concentric, overall structure simple and easy to operate, and linear and concentricity detection operation can be completed simultaneously, improve work efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hoisting auxiliary equipment technology, specifically to a hook center detection fixture. Background Technology

[0002] As the core load-bearing component for lifting and transferring heavy objects, the structural precision of the hook directly determines the safety and stability of the equipment operation. Among these, the straightness of the hook shank and the centering of the hook shank and hook socket are key technical indicators for evaluating the manufacturing quality of the hook. If the hook shank has significant bending (straightness exceeding the standard), it will cause additional bending moment during the hook's operation, easily leading to stress concentration and shortening its service life. If the center axis of the hook shank and hook socket deviates (centering exceeds the standard), it will cause the center of gravity of the load to shift during lifting, potentially accelerating hook wear and even causing serious safety accidents such as disengagement or overturning. Therefore, these two indicators must be rigorously tested during the hook manufacturing and factory inspection processes.

[0003] Currently, the industry generally uses decentralized and manual testing methods to inspect the straightness of hook shanks and the centering of hook shanks and hook sockets, which has significant technical defects and application pain points:

[0004] For hook shank straightness testing, current technologies mostly rely on operators using single tools such as dial indicators, rulers, or laser leveling instruments to measure point by point. The testing process is cumbersome and the results are unreliable.

[0005] Traditional methods for centering the hook shank and hook socket typically require first positioning the hook shank axis using tooling, then using a coordinate measuring machine or a special template to position the hook socket center, and finally manually comparing the positional deviations of the two axes to determine the centering. This type of method requires separate steps for hook shank positioning and hook socket positioning, making simultaneous testing of both indicators impossible. This results in a lengthy testing process, significantly increased processing time, and severely hinders improvements in production efficiency. Utility Model Content

[0006] To address the aforementioned issues, this utility model provides a hook center detection fixture that can simultaneously detect the straightness of the hook shank and the centerness of the hook shank and hook socket. It features a simple structure, ease of operation, reduced work time, and improved work efficiency.

[0007] To achieve the above objectives, this utility model embodiment adopts the following technical solution: a hook center detection fixture, including a base, on which are arranged horizontal and vertical grooves that are vertically intersecting. A jack support is provided on the upper surface of the base. Alignment plates are arranged in the horizontal grooves on both sides of the vertical grooves. A center marking block is provided on the side wall of one of the alignment plates. A center column is provided in the vertical groove. A laser right angle meter that works with the center marking block is provided on one side of the center column, and a distance measuring module is provided on the other side.

[0008] As a further improvement to the above technical solution:

[0009] The lower part of the aligning plate is provided with a slider that is slidably connected to the transverse groove.

[0010] The number of the center marking blocks is two and they are symmetrically distributed about the center line of the aligning plate. The side wall of the aligning plate is provided with a groove corresponding to the position of the center marking block.

[0011] The lower part of the central column is provided with a movable seat located in a vertical groove, and the upper part of the movable seat is provided with a rotating shaft connected to the central column.

[0012] The ranging module uses a distance sensor, which is coaxially distributed with the central column.

[0013] The ranging module includes a connecting rod located on the side wall of the central column, and a dial indicator is provided at the end of the connecting rod.

[0014] The ranging module includes multiple telescopic rods evenly distributed along the circumference of the central column.

[0015] The beneficial effects of this utility model embodiment are as follows: The hook center detection fixture includes a base, on which are arranged horizontal and vertical grooves that are vertically intersecting. A jack support is provided on the upper surface of the base. Alignment plates are arranged in the horizontal grooves on both sides of the vertical grooves. A center marking block is provided on the side wall of one of the alignment plates. A center column is provided in the vertical groove. A laser right angle meter for use with the center marking block is provided on one side of the center column, and a distance measuring module is provided on the other side. The hook shank diameter can be quickly confirmed by using the alignment block. After determining the center line, the straightness of the hook shank will be adjusted. Then, the center column is used to detect whether the hook socket and the hook shank are concentric. The overall structure is simple and easy to operate, and can simultaneously complete the detection of straightness and concentricity, thus improving work efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of Example 1;

[0017] Figure 2 This is a cross-sectional view of the base in Example 1;

[0018] Figure 3 This is a schematic diagram of the structure of Example 2;

[0019] Figure 4 This is a schematic diagram of the structure of Example 3.

[0020] In the diagram: 1. Base; 2. Horizontal groove; 3. Vertical groove; 4. Jack support; 5. Alignment plate; 6. Center marking block; 7. Center column; 8. Laser right angle gauge; 9. Slider; 10. Slide groove; 11. Moving seat; 12. Rotating shaft; 13. Distance sensor; 14. Connecting rod; 15. Dial indicator; 16. Telescopic rod. Detailed Implementation

[0021] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0022] Example 1

[0023] like Figure 1-2 As shown, the hook center detection fixture of this embodiment includes a base 1. The base 1 is provided with horizontal grooves 2 and vertical grooves 3 that are vertically intersecting. A jack support 4 is provided on the upper surface of the base 1. Alignment plates 5 are provided in the horizontal grooves 2 and located on both sides of the vertical grooves 3. A center marking block 6 is provided on the side wall of one of the alignment plates 5. A center column 7 is provided in the vertical groove 3. A laser right angle meter 8 that works with the center marking block 6 is provided on one side of the center column 7, and a distance measuring module is provided on the other side.

[0024] The lower part of the aligning plate 5 is provided with a slider 9 that is slidably connected to the transverse groove 2. The distance between the two aligning plates 5 can be adjusted according to the diameter of the hook handle, thus making it suitable for center detection operations of hooks of different sizes.

[0025] There are two center marking blocks 6, which are symmetrically distributed about the center line of the aligning plate 5. The side wall of the aligning plate 5 is provided with a sliding groove 10 corresponding to the position of the center marking block 6. The height of the center marking block 6 can be adjusted according to the diameter of the hook handle, so that the equipment is suitable for center detection of hooks of different sizes.

[0026] The lower part of the central column 7 is provided with a movable seat 11 located in the vertical groove 3, and the upper part of the movable seat 11 is provided with a rotating shaft 12 connected to the central column 7. The ranging module adopts a distance sensor 13, and the distance sensor 13 is coaxially distributed with the central column 7.

[0027] When in use, first place the entire hook on the base, with the hook socket fitted onto the roller of the center column 7. The straight part of the hook handle is located between the two alignment plates 5. The outer end face of the center line marking block 6 on the alignment plate 5 coincides with the center line of the hook handle. The two center line marking blocks 6 cut a straight line to ensure the straightness of the hook handle. Then, use the laser right angle meter 8 to lay out the line and make it coincide with the end of the center line marking block 6 to ensure the straightness of the hook handle in subsequent measurements. Then, move the center column 7 to the center position of the hook socket. While rotating the center column 7, use the distance sensor 13 to measure the distance to different points in the hook socket. If the distances between different points and the center column are the same, it indicates that the hook is in normal working condition.

[0028] Example 2

[0029] The similarities to Example 1 will not be repeated here, the differences being: Figure 3 As shown, the ranging module includes a connecting rod 14 located on the side wall of the central column 7. A dial indicator 15 is provided at the end of the connecting rod 14. The dial indicator 15 is used to replace the distance sensor 13 of the laser rangefinder. It can measure whether the hook socket and the hook shank are concentrically distributed when the accuracy requirement is low. Compared with embodiment 1, the cost is relatively low and it is easier to operate.

[0030] Example 3

[0031] The similarities to Example 1 will not be repeated here, the differences being: Figure 4 As shown, the ranging module includes multiple telescopic rods 16 evenly distributed along the circumference of the central column 7. The length of the telescopic rods 16 is measured. If there is a deviation in the length, it proves that the hook socket and the hook shank are not concentric and need further correction. Compared with embodiments 1 and 2, it can complete the detection operation of different hooks more quickly and continuously.

[0032] It should be noted that in the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0035] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A hook center detection fixture, comprising a base (1), characterized in that: The base (1) is provided with horizontal grooves (2) and vertical grooves (3) that are vertically intersecting, and the upper surface of the base (1) is provided with jack support (4). The transverse groove (2) is provided with alignment plates (5) located on both sides of the vertical groove (3), and a center marking block (6) is provided on the side wall of one of the alignment plates (5); A central column (7) is provided in the vertical groove (3). A laser right angle meter (8) is provided on one side of the central column (7) to cooperate with the central marking block (6), and a distance measuring module is provided on the other side.

2. The hook center detection fixture according to claim 1, characterized in that: The lower part of the aligning plate (5) is provided with a slider (9) that is slidably connected to the transverse groove (2).

3. The hook center detection fixture according to claim 1, characterized in that: The number of the center marking blocks (6) is two and they are symmetrically distributed about the center line of the aligning plate (5). The side wall of the aligning plate (5) is provided with a groove (10) corresponding to the position of the center marking block (6).

4. The hook center detection fixture according to any one of claims 1-3, characterized in that: The lower part of the central column (7) is provided with a movable seat (11) located in the vertical groove (3), and the upper part of the movable seat (11) is provided with a rotating shaft (12) connected to the central column (7).

5. The hook center detection fixture according to claim 4, characterized in that: The ranging module uses a distance sensor (13), which is coaxially distributed with the central column (7).

6. The hook center detection fixture according to claim 4, characterized in that: The ranging module includes a connecting rod (14) located on the side wall of the central column (7), and a dial indicator (15) is provided at the end of the connecting rod (14).

7. The hook center detection fixture according to claim 1, characterized in that: The ranging module includes multiple telescopic rods (16) evenly distributed along the circumference of the central column (7).

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