Nut leakproof detection tool

Abstract

The utility model relates to mechanical detection technical field, concretely discloses a nut leakproof loading detection frock, including sleeve, spigot and tracheal interface, spigot coaxial sleeve connects in the sleeve, can slide along the sleeve axial direction, tracheal interface sets up on the sleeve tail end face, the sleeve is connected to the support frame through the fixed base, and the fixed base is equipped with the lift mechanism of adjustable height.

Description

Technical Field

[0001] This utility model relates to the field of mechanical testing technology, and in particular to a nut leak-proof testing fixture. Background Technology

[0002] In the field of mechanical assembly, assembly quality is directly related to product performance and safety. With the continuous development of industrial production, assembly line operations have become an important way to improve production efficiency. However, in the mechanical assembly process, especially in assembly line operations, the nut, as an important component of mechanical connection, plays a key role in the integrity of the installation of the nut, which is crucial to the firmness of the component connection and the overall safety of the product.

[0003] Currently, two main conventional methods are used to check whether nuts are installed correctly. One is manual visual inspection, where workers directly observe the installation of the nuts with the naked eye. This method requires workers to have a certain level of experience and concentration; in assembly line operations, workers need to maintain a high level of attention for extended periods to carefully inspect each nut. The other method is through feedback from subsequent processes. This involves tracing back to the nut installation stage when a product problem is discovered in a later production step to determine if any nuts were missing. However, feedback from subsequent processes is often delayed, potentially leading to more defective products entering the production process, increasing production costs and the difficulty of quality control.

[0004] CN218787790U discloses a nut installation detection fixture, which uses a cylinder to drive a detection pin into the nut hole and utilizes electronic components such as a photosensitive sensor and a proximity switch to determine whether the nut is present. Although this solution can identify missing nuts, it relies on the coordination of multiple components such as cylinders, pistons, and position switches, resulting in a complex structure and high cost.

[0005] To address the aforementioned shortcomings, there is an urgent need to develop a simplified and highly reliable testing solution to solve the problem of high maintenance costs caused by complex drive mechanisms. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a nut leak-proof detection fixture, thus solving the problem of high maintenance costs caused by the complex drive mechanism of existing detection fixtures.

[0007] To solve the above problems, the technical solution adopted by this utility model is: a nut anti-leakage detection tool, including a sleeve, a tube, and an air pipe interface. The tube is coaxially sleeved inside the sleeve and can slide along the axial direction of the sleeve. The air pipe interface is set on the tail end face of the sleeve. The sleeve is connected to the support frame through a fixed seat. The fixed seat is equipped with a height-adjustable lifting mechanism.

[0008] Compared with existing technologies, the beneficial effects of this solution are: 1. This technical solution has only three core components: cannula, insertion tube, and tracheal interface, which greatly reduces manufacturing costs and makes maintenance simpler; 2. This technical solution uses air pressure to push the insertion tube, and the result can be directly judged whether it can pass through the nut hole, which makes the detection speed faster and suitable for assembly line operations.

[0009] Furthermore, the free end of the cannula is configured as a tapered guide section, the diameter of which gradually decreases from the head end to the free end.

[0010] Furthermore, a first limiting boss is provided on the inner side of the head inner wall of the sleeve, and a second limiting boss is provided on the outer side of the tail end face of the insertion tube, with the second limiting boss of the insertion tube abutting against the inner end face of the first limiting boss.

[0011] Furthermore, the endotracheal interface includes an air inlet and an air outlet. The air inlet is used to introduce air into the cannula to push the cannula out; the air outlet is used to draw out the gas to reset the cannula.

[0012] Furthermore, a guide structure is provided between the sleeve and the insertion tube, and the guide structure is a linear bearing or ball bushing sleeved on the outer periphery of the insertion tube. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of Embodiment 1 of this application.

[0014] Figure 2 This is a schematic diagram of Embodiment 2 of this application.

[0015] The reference numerals in the accompanying drawings of the instruction manual include: 1 sleeve; 11 first limiting boss; 2 insertion tube; 21 second limiting boss; 22 conical guide section; 3 tracheal interface; 4 guide structure; 5 support frame; 6 fixing base. Detailed Implementation

[0016] This application mainly uses a sleeve 1, a tube 2, and an air pipe interface 3 to detect whether the nut is installed, which achieves the effect of intuitively and quickly judging the installation status of the nut and preventing omissions. The following is a further detailed description of this application.

[0017] Example 1 like Figure 1 As shown in the embodiment of this application, the nut leak-proof detection fixture includes a sleeve 1, an insert 2, and an air pipe interface 3. The insert 2 is coaxially sleeved inside the sleeve 1 and can slide along the axial direction of the sleeve 1. The air pipe interface 3 is located on the tail end face of the sleeve 1. Whether the insert 2 can pass through the nut hole can be used to quickly and intuitively determine whether the nut is installed correctly. This is because if the nut is not installed, the insert 2 can pass through the nut hole, but if it is installed, it will be blocked.

[0018] Specifically, sleeve 1 is used for guidance and support. Sleeve 1 is typically made of metal, such as stainless steel, which has good strength and corrosion resistance. The inner wall of sleeve 1 should be smooth to reduce friction with the insertion tube 2 and facilitate the sliding of the insertion tube 2. In some cases, sleeve 1 can also be made of high-strength plastic, which is lightweight and relatively inexpensive. Sleeve 1 is connected to the fixing seat 6 by welding, bolting, or other methods. The fixing seat 6 is located on the support frame 5.

[0019] The insert 2 is coaxially fitted inside the sleeve 1 and can slide along the axial direction of the sleeve 1. The free end of the insert 2 is designed as a tapered guide section 22, the diameter of which gradually decreases from the head end to the free end. This tapered design makes it easier for the insert 2 to align with the nut hole, improving the accuracy of the inspection. The insert 2 can be made of carbon steel, which has a certain degree of hardness and toughness. Alternatively, it can be made of aluminum alloy, which is lightweight and reduces resistance during sliding. The fitting precision between the insert 2 and the sleeve 1 is required to ensure that the insert 2 can slide smoothly within the sleeve 1.

[0020] A first limiting protrusion 11 is provided on the inner side of the head inner wall of the sleeve 1, and a second limiting protrusion 21 is provided on the outer side of the tail end face of the insertion tube 2. The second limiting protrusion 21 of the insertion tube 2 abuts against the inner end face of the first limiting protrusion 11. The first limiting protrusion 11 can limit the sliding range of the insertion tube 2 and prevent the insertion tube 2 from sliding out of the sleeve 1. The first limiting protrusion 11 can be integrally formed with the sleeve 1, or it can be fixed to the inner wall of the head of the sleeve 1 by welding or other methods.

[0021] The endotracheal connector 3 is located on the tail end face of the cannula 1 and is used to connect to an external air source. The endotracheal connector 3 can be a common threaded connector for easy connection to an external endotracheal tube. The endotracheal connector 3 can be made of copper, which provides good sealing and corrosion resistance. Alternatively, a stainless steel endotracheal connector 3 can also be used. The gas pressure introduced through the endotracheal connector 3 can push the cannula 2 to slide.

[0022] The endotracheal interface 3 includes an air inlet and an air outlet. The air inlet is used to introduce air into the cannula 1, pushing the insertion tube 2 out; the air outlet can suck out the gas after the test is completed, causing the insertion tube 2 to return to its original position. The air inlet and air outlet can be connected to an external air source through different endotracheal tubes, and the air intake and exhaust operations are achieved by controlling the switch of the air source.

[0023] The sleeve 1 is connected to the external support frame 5 via a fixed base 6. The fixed base 6 is equipped with a lifting mechanism that allows the sleeve 1 to be adjusted in height. The lifting mechanism can be a screw and nut mechanism, in which the height of the sleeve 1 is adjusted by rotating the screw. Alternatively, it can be a hydraulic lifting mechanism, which uses hydraulic principles to adjust the height of the sleeve 1. By adjusting the height of the sleeve 1, the inspection fixture can be adapted to the inspection requirements of nut holes of different heights.

[0024] Example 2 like Figure 2 As shown, a guide structure 4 is provided between the sleeve 1 and the insertion tube 2. The guide structure 4 is a linear bearing or ball bushing sleeved on the outer circumference of the insertion tube 2. The linear bearing provides precise guidance, allowing the insertion tube 2 to slide smoothly along the axial direction of the sleeve 1. The ball bushing has good wear resistance and self-lubricating properties, reducing friction between the insertion tube 2 and the sleeve 1. The installation of the guide structure 4 needs to ensure its coaxiality with the insertion tube 2 and the sleeve 1 to ensure the smooth sliding of the insertion tube 2.

[0025] The implementation principle of this embodiment is as follows: The nut anti-leakage detection fixture of this embodiment has a simple structure, mainly composed of a sleeve 1, a tube 2, and an air pipe interface 3, which is easy to manufacture and maintain. During operation, simply position the workpiece and introduce air through the air pipe interface 3 to complete the detection; the process is quick and convenient. The installation status of the nut can be directly determined by whether the tube 2 can pass through the nut hole; the result is intuitive and accurate, effectively preventing quality problems and safety hazards caused by nut leakage. It is suitable for assembly line operations, significantly improving detection efficiency and reducing the cost of manual visual inspection.

[0026] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A nut leak-proof testing fixture, characterized in that: It includes a cannula (1), an insertion tube (2) and an endotracheal interface (3). The insertion tube (2) is coaxially sleeved inside the cannula (1) and can slide along the axial direction of the cannula (1). The endotracheal interface (3) is located on the tail end face of the cannula (1). The cannula (1) is connected to the support frame (5) through a fixed seat (6). The fixed seat (6) is equipped with a height-adjustable lifting mechanism.

2. The nut leak-proof testing fixture according to claim 1, characterized in that: The free end of the cannula (2) is configured as a tapered guide section (22), and the diameter of the tapered guide section (22) gradually decreases from the head end to the free end.

3. The nut leak-proof testing fixture according to claim 2, characterized in that: The inner side of the head inner wall of the sleeve (1) is provided with a first limiting boss (11), and the outer side of the tail end face of the insertion tube (2) is provided with a second limiting boss (21). The second limiting boss (21) of the insertion tube (2) abuts against the inner end face of the first limiting boss (11).

4. The nut leak-proof testing fixture according to claim 3, characterized in that: The endotracheal interface (3) includes an air inlet and an air outlet. The air inlet is used to introduce air into the sleeve (1) and push the insertion tube (2) out. The air outlet is used to draw out the gas and reset the insertion tube (2).

5. The nut leak-proof testing fixture according to claim 4, characterized in that: A guide structure (4) is provided between the sleeve (1) and the insertion tube (2). The guide structure (4) is a linear bearing or ball bushing sleeved on the outer periphery of the insertion tube (2).

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