Mechanical arm resetting device carrying nondestructive testing sensor

Abstract

The utility model belongs to the field of sensors, and particularly relates to a mechanical arm resetting device carrying a nondestructive testing sensor, which comprises a cylindrical shell, an elastic piece, a cylinder and a fixing rod, the cylinder is inserted into the shell, one end of the cylinder is sealed, an open hole is formed in the upper end face of the shell, and the elastic piece is arranged in the open hole. One end of the fixing rod is connected with a sensor, the other end of the fixing rod extends into the shell through the open hole, the other end of the fixing rod is connected with a fixing plate, the fixing plate is attached to the sealed end of the cylinder, the fixing plate prevents the fixing rod from falling off, the elastic piece is arranged in the shell, and the elastic piece is arranged in the shell. The elastic piece extends into the cylinder from the unsealed end of the cylinder so as to extrude the cylinder to enable the fixing rod to reset. According to the utility model, the impact force when the sensor is collided can be reduced, and the sensor can be adjusted and reset in time when the position of the sensor deviates.

Description

Technical Field

[0001] The utility model belongs to the field of sensors, and in particular relates to a mechanical arm resetting device equipped with a non-destructive testing sensor. Background Art

[0002] The integration of robotic arms and non-destructive testing (NDT) technology is an innovative application in modern industrial inspection. As high-precision automated equipment, robotic arms can mimic the complex movements of human arms and are widely used in automated production lines. When equipped with NDT technology, robotic arms can automatically perform inspection tasks without human intervention, thereby improving inspection efficiency and accuracy. NDT techniques, including ultrasonic, radiographic, magnetic particle, penetrant, and eddy current testing, assess the integrity of materials or components without damaging them. These techniques are widely used in industries such as aerospace, automotive, energy, and construction. The advantage of this technology combination is that robotic arms can reach difficult or dangerous locations for inspection, while reducing human error and ensuring consistent test results. Applying robotic arm technology to NDT can significantly improve the automation and efficiency of the inspection process. Robotic arms can carry various NDT instruments, automatically maneuver to the inspection area, and perform precise inspection tasks. This combination reduces manual labor and testing costs while improving the consistency and reliability of inspections.

[0003] When performing non-destructive testing on products through collision detection, a robotic arm equipped with a sensor is usually used for collision detection. The sensor and the robotic arm are fixedly connected, and the robotic arm needs to pay attention to obstacle avoidance when moving. At the same time, it is also necessary to ensure that the movement of the robotic arm is smooth and impact-free. However, in a dynamic environment, the sensor is prone to collision, causing the sensor position to shift, resulting in inaccurate measurement results, and even strong impacts to damage the sensor. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides a mechanical arm reset device equipped with a non-destructive testing sensor, which can reduce the impact force of the sensor when a collision occurs, and can adjust and reset the sensor in time when the position of the sensor is offset.

[0005] The technical solution of the present utility model includes a cylindrical shell, an elastic member, a cylindrical tube and a fixing rod. The cylindrical tube is inserted into the shell, and one end of the cylindrical tube is sealed. An opening is provided on the upper end surface of the shell. A sensor is connected to one end of the fixing rod, and the other end of the fixing rod extends into the shell through the opening. A fixing plate is connected to the other end of the fixing rod, and the fixing plate is fitted with the sealed end of the cylindrical tube. The fixing plate prevents the fixing rod from falling off. The elastic member is arranged inside the shell, and the elastic member extends into the cylindrical tube from the unsealed end of the cylindrical tube to squeeze the cylindrical tube to reset the fixing rod.

[0006] Furthermore, the cylindrical tube is clearance-matched with the shell so that the cylindrical tube slides inside the shell.

[0007] Furthermore, an end of the fixing rod away from the housing is connected to a transfer rod, and the transfer rod is threadedly connected to the fixing rod to facilitate adaptation to sensors of different sizes.

[0008] Furthermore, an end cap is threadedly connected to the lower end port of the shell to facilitate installation of the cylindrical tube, the elastic member and the fixing rod.

[0009] Furthermore, a vent hole is provided on the end surface of the end cap.

[0010] Compared with the prior art, the technical solution of the present invention has the following advantages:

[0011] When the sensor on the robotic arm collides, the fixing rod moves toward the inside of the shell to squeeze the cylindrical tube, so that the elastic part is deformed, reducing the impact force of the sensor collision. At the same time, the end of the fixing rod located inside the shell is connected to a fixing plate to prevent the fixing rod from falling off, and the fixing plate fits with the sealing end of the cylindrical tube to prevent the fixing rod from being damaged while squeezing the cylindrical tube when it is hit in any direction. When the collision is completed, the sensor needs to be reset to maintain its original position. At this time, the elastic part is reset, and the cylindrical tube is squeezed to quickly reset the fixing rod to its original state, ensuring that the sensor always maintains accurate measurement performance.

[0012] Other advantages, objectives and features of the present invention will be reflected in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0014] Figure 1 This is a schematic diagram of the overall structure of a robotic arm reset device equipped with a non-destructive testing sensor according to an embodiment of the present invention;

[0015] Figure 2 This is a three-dimensional diagram of a mechanical arm reset device equipped with a non-destructive testing sensor according to an embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the housing structure of a robotic arm reset device equipped with a non-destructive testing sensor according to an embodiment of the present utility model;

[0017] Figure 4 This is a schematic diagram of the cylindrical structure of a robotic arm reset device equipped with a non-destructive testing sensor according to an embodiment of the present utility model.

[0018] Reference numerals:

[0019] 1. Shell; 2. Elastic member; 3. Cylindrical tube; 4. Fixing plate; 5. Fixing rod; 6. End cap; 7. Opening; 8. Vent. DETAILED DESCRIPTION

[0020] A specific embodiment of the present invention will be described in detail below with reference to the accompanying drawings, but it should be understood that the protection scope of the present invention is not limited by the specific embodiment.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the technical solutions of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In the embodiments of the present invention, words such as "exemplary" or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present invention should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "for example" is intended to present the relevant concepts in a concrete manner.

[0023] like Figures 1 to 4 As shown, the utility model provides a robotic arm resetting device equipped with a non-destructive testing sensor, which is fixed on the robotic arm and includes a cylindrical shell 1, an elastic member 2, a cylindrical barrel 3 and a fixing rod 5. The cylindrical barrel 3 is inserted into the shell 1, and one end of the cylindrical barrel 3 is sealed. An opening 7 is provided on the upper end surface of the shell 1. One end of the fixing rod is connected to a sensor, and the other end of the fixing rod 5 extends into the shell 1 through the opening 7. The other end of the fixing rod 5 is connected to a fixing plate 4, which is fitted with the sealed end of the cylindrical barrel 3. The fixing plate 4 prevents the fixing rod 5 from falling off. The elastic member 2 is arranged inside the shell 1, and the elastic member 2 extends into the cylindrical barrel 3 from the unsealed end of the cylindrical barrel 3 to squeeze the cylindrical barrel 3 to reset the fixing rod.

[0024] When the sensor on the robotic arm collides, the fixing rod moves toward the inside of the shell 1 to squeeze the cylindrical tube 3, so that the elastic part 2 is deformed, reducing the impact force when the sensor collides. At the same time, the end of the fixing rod 5 located inside the shell 1 is connected to the fixing plate 4, which can prevent the fixing rod 5 from falling off, and the fixing plate 4 fits with the sealed end of the cylindrical tube 3 to prevent the fixing rod from being damaged while squeezing the cylindrical tube 3 when it is hit in any direction. When the collision is completed, the sensor needs to be reset to maintain its original position. At this time, the elastic part 2 is reset, and the cylindrical tube 3 is squeezed to quickly reset the fixing rod to its original state, ensuring that the sensor always maintains accurate measurement performance.

[0025] It can be understood that another function of setting up the fixing plate 4 is to fit with the sealing end of the cylindrical tube 3 so that the cylindrical tube 3 can reset the fixing rod 5. If the cylindrical tube 3 acts directly on the fixing rod 5, the fixing rod 5 is prone to tilting due to the lack of a force point, and there is a situation where it cannot be reset.

[0026] Optionally, the structure of the housing 1 can be a cylinder or a cuboid. Specifically, those skilled in the art can configure it according to their needs, and the present invention does not limit this. In the embodiment of the present invention, a cylinder is used.

[0027] Optionally, the elastic member 2 is preferably a spring, and the spring compresses the cylindrical tube 3 to reset the fixing rod 5.

[0028] Furthermore, in the embodiment of the present invention, the cylindrical tube 3 is clearance-fitted with the shell 1 so that the cylindrical tube 3 slides inside the shell 1 .

[0029] So that when the fixing rod squeezes the cylindrical barrel 3 , the cylindrical barrel 3 can slide in the housing 1 .

[0030] Furthermore, in an embodiment of the present invention, a transfer rod is connected to one end of the fixing rod away from the housing 1 , and the transfer rod is threadedly connected to the fixing rod to facilitate adaptation to sensors of different sizes.

[0031] It can be understood that since the structure of the fixed rod 5 of the robotic arm resetting device is fixed, when a different sensor needs to be replaced, if the overall size of the sensor is significantly different from the preset size and cannot be connected to the fixed rod 5, a transfer rod can be added to the end of the fixed rod 5 so that the replaced sensor can be installed on the fixed rod 5 without changing the size of the fixed rod 5.

[0032] Furthermore, in the embodiment of the present invention, an end cap 6 is threadedly connected to the lower end port of the shell 1 to facilitate installation of the cylindrical tube 3, the elastic member 2 and the fixing rod.

[0033] Furthermore, in the embodiment of the present invention, a vent hole 8 is provided on the end surface of the end cap 6 .

[0034] It can be understood that when the cylindrical tube 3 and the shell 1 slide in a clearance fit, there is a certain degree of sealing between the cylindrical tube 3 and the shell 1, resulting in that when the fixed rod squeezes the cylindrical tube 3, the cylindrical tube 3 is difficult to move due to the influence of air pressure, so that the fixed rod cannot relieve the impact force of the impact sensor, which can easily damage the sensor. The addition of the vent hole 8 can avoid the problem of the cylindrical tube 3 being unable to move due to this air pressure problem.

[0035] It should be noted that, in this document, the terms "comprises," "includes," or any other variations thereof are intended to encompass non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of other identical elements in the process, method, article, or apparatus comprising the element.

[0036] Although the embodiments of the present invention have been disclosed above, they are not limited to the applications listed in the specification and exemplary embodiments. They can be applied to a variety of fields suitable for the present invention. Those skilled in the art will readily realize further modifications. Therefore, without departing from the general concept defined by the claims and their equivalents, the present invention is not limited to the specific details and illustrations shown and described herein.

Claims

1. A robot arm reset device equipped with a non-destructive testing sensor, fixed on the robot arm, characterized in that: It comprises a cylindrical shell (1), an elastic member (2), a cylindrical tube (3) and a fixing rod (5); The cylindrical tube (3) is inserted into the shell (1), and one end of the cylindrical tube (3) is sealed. An opening (7) is provided on the upper end surface of the shell (1). One end of the fixing rod (5) is connected to a sensor. The other end of the fixing rod (5) extends into the shell (1) through the opening (7). The other end of the fixing rod (5) is connected to a fixing plate (4). The fixing plate (4) fits with the sealed end of the cylindrical tube (3). The fixing plate (4) prevents the fixing rod (5) from falling off. The elastic member (2) is arranged inside the shell (1), and the elastic member (2) extends into the cylindrical tube (3) from the unsealed end of the cylindrical tube (3) to squeeze the cylindrical tube (3) so as to reset the fixing rod (5).

2. A robotic arm reset device equipped with a non-destructive testing sensor according to claim 1, characterized in that: The cylindrical tube (3) and the shell (1) are clearance-matched, so that the cylindrical tube (3) slides inside the shell (1).

3. A robotic arm reset device equipped with a non-destructive testing sensor according to claim 1, characterized in that: One end of the fixing rod (5) away from the housing (1) is connected to a transfer rod, and the transfer rod is threadedly connected to the fixing rod (5) to facilitate adaptation to sensors of different sizes.

4. A robotic arm resetting device equipped with a non-destructive testing sensor according to claim 1, characterized in that: The lower end port of the shell (1) is threadedly connected to an end cap (6) for mounting the cylindrical tube (3), the elastic member (2) and the fixing rod (5).

5. A robot arm resetting device equipped with a non-destructive testing sensor according to claim 4, characterized in that: A vent hole (8) is provided on the end surface of the end cap (6).

Images