A mechanism for detecting the presence of a component

Abstract

The utility model provides a kind of in-place detection mechanism, including mounting seat;Limit switch is equipped in the mounting seat, and the upper end of mounting seat is connected with end cap;Contact is equipped in the end cap, and large sleeve and small sleeve and pressure rod are sequentially equipped in contact;Large compression spring is sleeved with large sleeve, and small compression spring is equipped between pressure rod and large sleeve.The utility model can accurately detect the in-place condition of moving part and timely send in-place signal, with simple and compact structure, high reliability, strong adaptability, convenient operation, high detection precision and other characteristics.

Description

Technical Field

[0001] This utility model relates to a positioning detection mechanism and belongs to the field of mechanical design technology. Background Technology

[0002] Many moving parts on ground equipment require positioning detection functions. Often, these parts cannot stop moving instantly when they reach their positioning position, which can cause a certain amount of external force impact on the positioning detection device.

[0003] Traditional positioning detection devices cannot withstand external impacts and suffer from low reliability and poor environmental adaptability. For example, Chinese Patent No. CN222799979U discloses a positioning detection device based on the mechanical linkage between a drive mechanism and a sensing connecting block. The drive mechanism (such as a cylinder or motor) moves the sensing connecting block, triggering a positioning detection switch. Its core is the motion control of the drive mechanism, and its structure is relatively simple, but it does not mention spring buffering or layered design. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides a positioning detection mechanism, which improves the accuracy and reliability of positioning detection. It has a simple and compact structure, is versatile, can adapt to different places, and has a wide range of applications.

[0005] This utility model is achieved through the following technical solution.

[0006] This utility model provides a positioning detection mechanism, including a mounting base; a limit switch is provided inside the mounting base, and an end cover is connected to the upper end of the mounting base; a contact is provided inside the end cover, and a large sleeve, a small sleeve, and a pressure rod are sequentially provided inside the contact; a large compression spring is sleeved on the large sleeve, and a small compression spring is provided between the pressure rod and the large sleeve.

[0007] The contact is rigidly connected to the large sleeve.

[0008] The end cap has a guide hole, and the large sleeve has a limit step.

[0009] The large sleeve is slidably installed inside the guide hole.

[0010] The upper and lower ends of the large compression spring are in contact with the end cap and the mounting base, respectively.

[0011] The lower end of the large compression spring contacts the limiting step.

[0012] The smaller sleeve is coaxially nested inside the larger sleeve.

[0013] The top of the small sleeve is elastically connected to the inner wall of the large sleeve via a small compression spring, and the bottom is rigidly connected to the pressure rod.

[0014] The bottom of the pressure rod works in conjunction with the trigger end of the limit switch.

[0015] The advantages of this utility model are: it can accurately detect the position of moving parts and send out a position signal in a timely manner. It has a simple and compact structure, high reliability, strong adaptability, convenient operation and high detection accuracy. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model;

[0017] Figure 2 This is a diagram showing the working state of this utility model before it is in place;

[0018] Figure 3 This is a diagram showing the working state of this utility model in place;

[0019] In the diagram: 1-Contact, 2-End cover, 3-Mounting base, 4-Limit switch, 5-Large sleeve, 6-Large compression spring, 7-Small compression spring, 8-Small sleeve, 9-Pressure rod. Detailed Implementation

[0020] The technical solution of this utility model is further described below, but the scope of protection is not limited to what is described.

[0021] like Figure 1 As shown, contact 1 is connected to large sleeve 5, end cap 2 is connected to mounting base 3, limit switch 4 is fixed on mounting base 3, small sleeve 8 is connected to pressure rod 9, large pressure spring 6 is installed on the outside of large sleeve 5, and small pressure spring 7 is installed on the inside of large sleeve 5.

[0022] like Figure 2 and 3 As shown, the working principle of this utility model is as follows:

[0023] After the moving part reaches the designated position, it will strike the contact 1. The contact 1 and the large sleeve 5 move downwards within the guide hole of the mounting base 3, compressing the large compression spring 6. At the same time, the small compression spring 7, under the pressure of the contact 1, pushes the small sleeve 8 and the pressure rod 9 downwards. The pressure rod 9 presses down on the limit switch 4, triggering the limit switch 4 to sense and send a signal indicating that it has reached its position. During this process, when the bottom surface of the small sleeve 8 contacts the bottom surface of the inner hole of the mounting base 3, the small sleeve 8 stops moving downwards. The contact 1 and the large sleeve 5 continue to move downwards under the action of external force until the bottom surface of the large sleeve 5 contacts the bottom surface of the inner hole of the mounting base 3, where the external force is borne by the contact surface.

[0024] After the moving part leaves, the contact 1 drives the large sleeve 5 to move upward under the action of the compressed large spring 6. The large sleeve 5 drives the small sleeve 8 and the pressure rod 9 to move upward synchronously. The pressure rod 9 separates from the limit switch, the limit switch returns to the free state, and stops sending the position signal.

[0025] The beneficial effects of this utility model are as follows:

[0026] ① By using an internal spring design, the impact load from the outside is transferred to the internal structural components of the mechanism, avoiding damage to the limit switch from impact and improving the reliability of the positioning detection mechanism;

[0027] ② The limit switch is a reed changeover switch, whose travel is not affected by the environment, thus improving the environmental adaptability of the positioning detection mechanism;

[0028] ③ Limit switches with different stroke lengths can be replaced as needed to adapt to different working scenarios;

[0029] ④ The structural components mostly adopt rigid structures, resulting in a long service life.

Claims

1. A mechanism for detecting the presence of an object comprising a mounting (3) characterised in that: The mounting base (3) is equipped with a limit switch (4), and the upper end of the mounting base (3) is connected to an end cover (2); the end cover (2) is equipped with a contact (1), and the contact (1) is equipped with a large sleeve (5), a small sleeve (8), and a pressure rod (9) in sequence; a large compression spring (6) is sleeved on the large sleeve (5), and a small compression spring (7) is provided between the pressure rod (9) and the large sleeve (5).

2. The in-place detection mechanism of claim 1, wherein: The contact (1) is rigidly connected to the large sleeve (5).

3. The in-place detection mechanism of claim 1, wherein: The end cap (2) has a guide hole, and the large sleeve (5) has a limit step.

4. The in-place detection mechanism of claim 3, wherein: The large sleeve (5) is slidably installed in the guide hole.

5. The in-place detection mechanism of claim 1, wherein: The upper and lower ends of the large compression spring (6) are in contact with the end cap (2) and the mounting base (3), respectively.

6. The arrival detection mechanism as described in claim 3, characterized in that: The lower end of the large compression spring (6) contacts the limiting step.

7. The positioning detection mechanism as described in claim 1, characterized in that: The small sleeve (8) is coaxially nested inside the large sleeve (5).

8. The arrival detection mechanism as described in claim 1, characterized in that: The top of the small sleeve (8) is elastically connected to the inner wall of the large sleeve (5) through a small compression spring (7), and the bottom is rigidly connected to the pressure rod (9).

9. The positioning detection mechanism as described in claim 1, characterized in that: The bottom of the pressure rod (9) works in conjunction with the trigger end of the limit switch (4).

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