Gear detection device inside the box

Abstract

The present invention provides a gear detection device in a box, which relates to the field of non-destructive testing technology. The gear detection device in a box includes a carrier and a limit assembly. The limit assembly includes two limit components. The two limit components are connected to opposite sides of the carrier in a one-to-one correspondence, and the two limit components and the carrier together form a limit groove that matches the gear teeth of the gear to be tested; an ultrasonic surface wave probe is installed at the bottom of the carrier, and the carrier is connected to an operating rod, the axial direction of the operating rod is consistent with the extension direction of the gear teeth. When the gear detection device in a box detects the gears inside the box, there is no need to remove the gears, the detection is convenient, the labor consumption is small, and the detection accuracy can be ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of non-destructive testing, and in particular to a gear detection device in a box. Background Art

[0002] Gears are widely used in mechanical transmission mechanisms. For gears installed inside a box, in the existing technology, the gears generally need to be removed from the box before they can be inspected, which makes the inspection difficult. Alternatively, the gears can be visually inspected with the eyes, which has poor inspection accuracy and requires a lot of manual labor. Summary of the Invention

[0003] The purpose of the present invention is to provide a gear detection device inside a box to solve the technical problems that the existing gear detection inside the box is difficult, has poor detection accuracy and consumes a lot of manual labor.

[0004] In order to solve the above problems, the present invention provides an in-box gear detection device, including a carrier and a limit assembly, the limit assembly including two limit components, the two limit components are connected to the opposite sides of the carrier in a one-to-one correspondence, and the two limit components and the carrier together form a limit groove that matches the teeth of the gear to be tested; an ultrasonic surface wave probe is installed at the bottom of the carrier, and the carrier is connected to an operating rod, the axial direction of the operating rod is consistent with the extension direction of the teeth.

[0005] Optionally, the limiting component includes a connecting arm and a roller pivotally connected to the first end of the connecting arm, the roller is used to rollingly connect with the tooth side wall on the corresponding side of the gear tooth, and the rolling direction of the roller is consistent with the extension direction of the gear tooth; the second end of the connecting arm is connected to the carrier.

[0006] Optionally, the second end of the connecting arm is hinged to the carrier, and the two connecting arms of the same limiting assembly can rotate towards or away from each other.

[0007] Optionally, the second end of the connecting arm is connected to an extension arm, and an elastic reset member is connected between the two extension arms of the same limiting assembly, and the elastic reset member is used to drive the two extension arms to rotate away from each other.

[0008] Optionally, one end of the extension arm away from the connecting arm extends to above the carrier and is provided with a magnetic element, and an electromagnet is installed on the top of the carrier.

[0009] Optionally, an endoscopic probe is mounted on the carrier, and an end portion of the operating rod facing away from the carrier is provided with an endoscope connected to the endoscopic probe.

[0010] Optionally, there are m groups of ultrasonic surface wave probes, which are arranged at equal intervals along the axial direction of the operating rod, and the spacing between two adjacent groups of ultrasonic surface wave probes is L; the extension length of the teeth of the gear to be tested is S, S=m·L, and m is a positive integer greater than 1.

[0011] Optionally, there are two groups of the limiting components, and the two groups of the limiting components are arranged at intervals.

[0012] Optionally, the roller is a magnetic roller.

[0013] Optionally, the interior of the operating rod is hollow to form a hollow channel, and a wire connected to the ultrasonic surface wave probe extends outward through the hollow channel.

[0014] Optionally, the operating rod comprises a plurality of sleeves that are slidably connected in sequence along its axial direction, and the diameters of the sleeves in the plurality of sections decrease in sequence in the direction toward the carrier.

[0015] The gear detection device in the box also includes a telescopic driving member connected to the operating rod, the driving end of the driving shaft of the telescopic driving member is connected to the sleeve of the operating rod connected to the carrier, and the axial direction of the driving shaft is consistent with the axial direction of the operating rod.

[0016] Optionally, the sleeve includes a cylindrical body, the end of the cylindrical body facing the carrier is a receiving end, and the end away from the carrier is a plug-in end, the inner wall of the cylindrical body at the receiving end is provided with an annular inner edge, the outer wall of the cylindrical body is provided with a first annular outer edge, and the outer wall of the cylindrical body at the plug-in end is provided with a second annular outer edge; in two adjacent sleeves, the cylindrical body close to one of the carriers is fitted and plugged into the annular inner edge of the other one.

[0017] The in-box gear detection device provided by the present invention can detect the gear to be tested inside the box. The gear to be tested does not need to be disassembled during the detection process, thereby improving the convenience of detecting the gear in the box and greatly reducing the amount of manual labor. In addition, during the detection process, the limit component can guide and limit the movement of the carrier and the ultrasonic surface wave probe thereon along the extension direction of the gear teeth, thereby improving the position accuracy of a single detection stroke of the detection device, and correspondingly ensuring its detection accuracy and the overlap of the edge areas of the detection range of multiple detection strokes, thereby reducing the occurrence of false detection and missed detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0019] Figure 1 A top view of the gear detection device in a box provided by the present invention in the first form;

[0020] Figure 2 for Figure 1 Schematic diagram of radial section when the detection device is connected to the gear teeth;

[0021] Figure 3 A schematic radial cross-sectional view of the second form of the gear detection device provided by the present invention, wherein the electromagnet is in a power-off state;

[0022] Figure 4 for Figure 3 A schematic diagram of a radial cross section of a detection device when the electromagnet is in an energized state;

[0023] Figure 5 This is an axial cross-sectional view of the operating lever of the gear detection device in the box provided by the present invention when it is in a retracted state;

[0024] Figure 6 This is an axial cross-sectional view of the operating rod of the gear detection device in the box provided by the present invention when it is in an extended state.

[0025] Description of reference numerals:

[0026] 10-gear to be tested; 11-tooth; 12-tooth top wall; 13-tooth side wall; 14-tooth root; 100-carrier; 200-limiting assembly; 210-limiting component; 211-connecting arm; 212-roller; 213-extension arm; 300-limiting groove; 410-ultrasonic surface wave probe; 420-wire; 430-ultrasonic detector; 500-operating rod; 510-hollow channel; 520-sleeve; 521-cylinder; 522-accommodating end; 523-plug-in end; 524-annular inner edge; 525-first annular outer edge; 526-second annular outer edge; 610-elastic reset member; 620-magnetic member; 630-electromagnet; 700-handle. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more clearly understood, the following detailed description of the specific embodiments of the present invention is given in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0028] This embodiment provides a gear detection device in a box, such as Figure 1As shown, it includes a carrier 100 and a limiting assembly 200. The limiting assembly 200 includes two limiting components 210. The two limiting components 210 are connected to opposite sides of the carrier 100 in a one-to-one correspondence, and the two limiting components 210 and the carrier 100 together form a limiting groove 300 that matches the gear teeth 11 of the gear 10 to be tested; an ultrasonic surface wave probe 410 is installed at the bottom of the carrier 100, and the carrier 100 is connected to an operating rod 500, and the axial direction of the operating rod 500 is consistent with the extension direction of the gear teeth 11.

[0029] The gear detection device in the box provided in this embodiment includes a carrier 100 as a mounting base, an ultrasonic surface wave probe 410 for non-destructive testing of gears, a limiting assembly 200 for limiting the detection position of the carrier 100, and an operating rod 500 for adjusting the detection position of the carrier 100 and the probe outside the box. Initially, the box body with the gear 10 to be tested built in is provided with a hand hole, and the hand hole is located on one side of the axial direction of the gear 10 to be tested; when it is necessary to test the gear 10 to be tested inside the box body, the operating rod 500 is held and the carrier 100 and the limiting assembly 200 and the ultrasonic surface wave probe 410 thereon are extended into the interior of the box body through the hand hole until the carrier 100 reaches one end of the extension direction of one of the teeth 11 of the gear 10 to be tested (that is, the axial direction of the gear 10 to be tested), and the end of the tooth 11 is slidably inserted into the limiting groove 300, as shown in FIG. Figure 2As shown, the two limiting components 210 are respectively overlapped with the tooth side walls 13 on both sides of the gear tooth 11 to play a limiting role, and the carrier 100 is approximately overlapped with the tooth top wall 12 of the gear tooth 11 under the limiting effect of the limiting components 210 on both sides; the ultrasonic surface wave probe 410 is turned on, and along the width direction of the gear tooth 11 (that is, the circumferential direction of the gear 10 to be measured), the scanning range of the ultrasonic surface wave probe 410 at least includes the tooth top wall 12, the tooth side walls 13 on both sides and the tooth root 14 area on both sides of the gear tooth 11. Since the axial direction of the operating rod 500 is consistent with the axial direction of the gear 10 to be measured, the depth of the operating rod 500 inserted into the box body is adjusted to drive the carrier 100 and the limiting component 200 to move along the extension direction of the gear tooth 11, and the ultrasonic surface wave probe 410 then comprehensively scans the gear tooth 11 along the extension direction. Scanning. When there is an echo signal in the signal fed back by the ultrasonic surface wave probe 410, the inspector can determine whether the echo signal is an inherent structure signal or a defect signal based on the structure of the gear 10 to be tested. After the single stroke scan is completed, the carrier 100 is pulled outward by the operating rod 500 to separate it from the gear tooth 11 that has been tested. Then, according to the scanning width of the ultrasonic surface wave probe 410 along the width direction of the gear tooth 11, the gear 10 to be tested is rotated so that the next untested gear tooth 11 is rotated to the corresponding position of the hand hole. The carrier 100 and the limit assembly 200 are moved again by the operating rod 500 so that the gear tooth 11 is slidably inserted into the limit groove 300 for the next stroke scan. This cycle is repeated until the scanning and testing of all gear teeth 11 in the gear 10 to be tested is completed, and the detection device can be taken out.

[0030] The gear detection device inside the box can detect the gear to be tested 10 inside the box, and the gear to be tested 10 does not need to be removed during the detection process, thereby improving the convenience of detecting the gears in the box and greatly reducing the amount of manual labor; in addition, during the detection process, the limit component 200 can guide and limit the movement of the carrier 100 and the ultrasonic surface wave probe 410 thereon along the extension direction of the gear tooth 11, thereby improving the position accuracy of a single detection stroke of the detection device, and correspondingly ensuring its detection accuracy and the overlap of the edge areas of the detection range of multiple detection strokes, thereby reducing the occurrence of false detection and missed detection.

[0031] Optionally, in this embodiment, the carrier 100 may be mounted with an endoscopic probe, and an endoscope connected to the endoscopic probe is provided at the end of the operating lever 500 facing away from the carrier 100. When the ultrasonic surface wave probe 410 detects a defect signal, the operator can verify the location of the defect signal through the endoscope and take a photo, thereby improving the detection accuracy and functionality of the detection device.

[0032] Preferably, in this embodiment, if Figure 1As shown, multiple groups of ultrasonic surface wave probes 410 can be installed on the carrier 100, and the multiple groups of ultrasonic surface wave probes 410 are arranged at equal intervals along the extension direction of the gear tooth 11. Then, during the detection process, the multiple groups of ultrasonic surface wave probes 410 can simultaneously detect different areas in the extension direction of the gear tooth 11 as the operating rod 500 is extended. That is, the operating rod 500 can achieve a wide range of detection in the extension direction of the gear tooth 11 through a relatively small extension stroke, thereby improving the detection efficiency of the detection device. Specifically, the distance between two adjacent groups of ultrasonic surface wave probes 410 is L, the extension length of the gear teeth 11 is S, S=m·L, and the number of groups of ultrasonic surface wave probes 410 is m, where m is a positive integer greater than 1; during detection, a group of ultrasonic surface wave probes 410 close to the operating rod 500 is aligned with the end of the gear teeth 11 extending in the direction toward the operating rod 500, then the operating rod 500 extends a distance L, and the m groups of ultrasonic surface wave probes 410 synchronously move forward L to reach the initial position of the adjacent group of ultrasonic surface wave probes 410, thereby achieving comprehensive detection of the extension direction of the gear teeth 11, thereby improving the operating convenience and detection efficiency of the detection device.

[0033] Specifically, the number of ultrasonic surface wave probes 410 in each group of ultrasonic surface wave probes 410 can be two, and the two ultrasonic surface wave probes 410 in the same group are located on both sides of the two limiting components 210 in a one-to-one correspondence. During the detection process, the two ultrasonic surface wave probes 410 can scan to both sides respectively to increase the scanning width of a single detection stroke, correspondingly reduce the number of detection strokes, and further improve the convenience of operation and detection efficiency. For example, the scanning width of a single ultrasonic surface wave probe 410 is the width of two gear teeth 11. Then, during the detection, the scanning width of the two ultrasonic surface wave probes 410 in the same group is four gear teeth 11. The gear 10 to be tested includes twenty-four gear teeth 11. Repeating the scanning six times can complete the detection of all gear teeth 11. Compared with setting a single ultrasonic surface wave probe 410 in each group, six scanning operations can be reduced.

[0034] Specifically, a handle 700 can be fixedly connected to the end of the operating rod 500 facing away from the carrier 100. During the inspection process, the inspector can hold the handle 700 to operate the operating rod 500, thereby improving the convenience of using the inspection device; preferably, the ultrasonic detector 430 connected to the ultrasonic surface wave probe 410 can be installed on the end of the handle 700 close to the operating rod 500, and the ultrasonic detector 430 can move with the inspection device, thereby improving the portability and applicability of the inspection device, and correspondingly reducing the occurrence of situations where the use of the inspection device is restricted by the ultrasonic detector 430.

[0035] In this embodiment, Figure 1As shown, there are two sets of limit assemblies 200, one located in the front and one in the rear of the carrier 100. After the limit assemblies 200 and the carrier 100 are plugged into and mated with the gear teeth 11, the two sets of limit assemblies 200 can be connected and limited at different positions along the extension direction of the gear teeth 11. This improves the stability of the connection between the limit assemblies 200 and the carrier 100 and the gear teeth 11, and correspondingly improves the positional accuracy and stability of the carrier 100's movement along the extension direction of the gear teeth 11 during the detection process. This further ensures the detection accuracy of the detection device and the overlap of the edge areas of the detection range across multiple detection strokes, thereby reducing the occurrence of false detections and missed detections.

[0036] Optionally, in this embodiment, the limiting component 210 includes a connecting arm 211 and a roller 212 pivotally connected to the first end of the connecting arm 211, the roller 212 is used to roll with the tooth side wall 13 on the corresponding side of the gear tooth 11, and the rolling direction of the roller 212 is consistent with the extension direction of the gear tooth 11; the second end of the connecting arm 211 is connected to the carrier 100. This is one specific form of the limiting component 210, such as Figure 2 As shown, during detection, the two rollers 212 of the limit assembly 200 roll and fit with the tooth side walls 13 on both sides of the gear teeth 11. On the basis of achieving the guide limit of the carrier 100, the resistance of the operating rod 500 to push the carrier 100 and the limit assembly 200 to move along the extension direction of the gear teeth 11 is greatly reduced, thereby reducing the operating load of the detection personnel, improving the smoothness of the movement of the carrier 100 and the limit component 210, and correspondingly improving the detection stability of the detection device.

[0037] Specifically, in this embodiment, the second end of the connecting arm 211 is hinged to the carrier 100, and the two connecting arms 211 of the same limiting assembly 200 can rotate toward or away from each other. Rotating the two connecting arms 211 of the same limiting assembly 200 toward or away from each other can change the width of the limiting groove 300 formed between the two connecting arms 211 and the carrier 100. Specifically, rotating the two connecting arms 211 toward each other can reduce the width of the limiting groove 300, while rotating the two connecting arms 211 away from each other can increase the width of the limiting groove 300. During use, the rotation angle of the two connecting arms 211 can be adjusted according to the width of the teeth 11 in the gear 10 to be tested so that the limiting groove 300 matches the teeth 11. On the basis of ensuring that the limiting assembly 200 guides and limits the carrier 100, the detection device can be applied to gears 10 to be tested with different tooth widths, thereby expanding the scope of application of the detection device and improving its applicability.

[0038] Optionally, in this embodiment, if Figure 3 and Figure 4As shown, the second end of the connecting arm 211 is connected to the extension arm 213, and an elastic reset member 610 is connected between the two extension arms 213 of the same limiting assembly 200. The elastic reset member 610 is used to drive the two extension arms 213 to rotate away from each other. When the limiting groove 300 formed by the limiting assembly 200 and the carrier 100 is plugged into the gear teeth 11 of the gear 10 to be tested, during the detection process, the elastic reset member 610 can apply an elastic driving force to the two extension arms 213 to rotate away from each other. Accordingly, the two connecting arms 211 of the same limiting assembly 200 tend to rotate toward each other under the driving action of the corresponding extension arms 213, thereby applying a driving force toward the corresponding tooth side wall 13 to the roller 212, so that the roller 212 presses the corresponding tooth side wall 13, thereby improving the connection firmness between the two, and correspondingly improving the connection stability between the limiting assembly 200 and the gear teeth 11, ensuring its guiding and limiting effect on the carrier 100, and reducing the loose fit between the connecting arms 211 and the corresponding tooth side wall 13 during the movement of the carrier 100, which makes the carrier 100 easy to tilt and affect the scanning range of the ultrasonic surface wave probe 410, resulting in false detection and missed detection.

[0039] Specifically, the elastic return member 610 can be a compression spring or other elastic member in a compressed state.

[0040] Optionally, in this embodiment, the roller 212 may be a magnetic roller 212. When the limiting assembly 200 and the carrier 100 are mated and connected with the gear teeth 11, the roller 212 can be magnetically attracted to the corresponding tooth sidewall 13, and this magnetic attraction is not affected by the rolling of the roller 212, thereby further improving the rolling connection stability between the roller 212 and the tooth sidewall 13 during the detection process, and correspondingly further improving the guiding and limiting stability of the limiting assembly 200 on the carrier 100.

[0041] Specifically, in this embodiment, the end of the extension arm 213 away from the connecting arm 211 extends to the top of the carrier 100 and is provided with a magnetic member 620. An electromagnet 630 is installed on the top of the carrier 100. When the electromagnet 630 is energized, it is magnetically attracted to the magnetic member 620. Figure 3 As shown, the control electromagnet 630 is in the power-off state, and the roller 212 presses the corresponding tooth side wall 13 under the elastic pushing action of the elastic reset member 610, thereby ensuring the connection firmness and stability between the limit assembly 200 and the gear 11, and ensuring its guiding and limiting effect on the carrier 100; when the detection device completes a single detection stroke, as shown Figure 4As shown, the electromagnet 630 can be controlled to be in an energized state, so that the electromagnet 630 generates a magnetic attraction force toward the carrier 100 on the magnetic attraction member 620 at the end of the extension arm 213. Then, under the action of the magnetic attraction force, the extension arm 213 overcomes the pushing action of the elastic reset member 610 and rotates toward the carrier 100. Accordingly, the connecting arm 211 drives the roller 212 to rotate away from the corresponding tooth side wall 13, thereby reducing the resistance of the inspection personnel when pulling the carrier 100 outward, thereby improving its operation convenience, and pulling the carrier 100 outward to separate from the inspected After the gear tooth 11 is completed, the two connecting arms 211 and the roller 212 form a larger limit groove 300 under the action of magnetic attraction, thereby improving the convenience of plugging it with the next gear tooth 11. After the next gear tooth 11 is plugged into the limit groove 300, the electromagnet 630 is controlled to be powered off, and the elastic reset member 610 pushes the extension arm 213 and the connecting arm 211 to drive the roller 212 to rotate, so that the roller 212 is pressed against the corresponding tooth side wall 13, again ensuring the firmness of the connection between the limit assembly 200 and the gear tooth 11. This cycle is repeated to complete the detection of all gear teeth 11.

[0042] Optionally, in this embodiment, if Figure 1 As shown, the operating rod 500 is hollowed out to form a hollow channel 510, and the wire 420 connected to the ultrasonic surface wave probe 410 extends outward through the hollow channel 510. The wire 420 connected to the ultrasonic surface wave probe 410 can extend through the hollow channel 510 inside the operating rod 500 to the outside of the box, thereby improving the neatness of the portion of the detection device located inside the box and reducing the risk of the exposed wire 420 being caught on internal components of the box, affecting the movement of the detection device, or even causing the ultrasonic surface wave probe 410 to short or open. Similarly, when an electromagnet 630 is provided, the wire 420 connected to the electromagnet 630 can also extend through the hollow channel 510.

[0043] Specifically, in this embodiment, the operating rod 500 includes multiple sections of sleeves 520 that are slidably inserted in sequence along its axial direction, and the diameters of the multiple sections of sleeves 520 decrease successively in the direction toward the carrier 100; the gear detection device in the box also includes a telescopic drive member connected to the operating rod 500, and the driving end of the drive shaft of the telescopic drive member is connected to the sleeve 520 connecting the operating rod 500 to the carrier 100, and the axial direction of the drive shaft is consistent with the axial direction of the operating rod 500. Here, the operating rod 500 is a specific form of a telescopic rod. On the one hand, the length of the operating rod 500 can be changed, so that it can be applied to more forms of boxes and gears 10 to be tested, thereby improving the applicability of the detection device; on the other hand, when in use, the detection personnel only need to hold the outer end of the operating rod 500, align the limiting groove 300 formed by the carrier 100 and the limiting component 210 with the gear teeth 11 to be detected, and then start the telescopic driving member to extend its driving shaft, and accordingly push the sleeve 520 to extend into the box until the carrier 100 and the limiting component 210 are plugged into the gear teeth 11, and the driving shaft continues to push the sleeve 520 to extend, and accordingly, the operating rod 500 extends inward to drive the carrier 100 and the limiting component 210 along the gear teeth 11 moves in the extension direction until the scanning of the gear teeth 11 is completed; then the driving shaft of the telescopic driving member is controlled to shorten, and the sleeve 520 is correspondingly driven to retract toward the inside of the box, and the operating rod 500 is shortened outward to drive the carrier 100 and the limiting component 210 to return along the extension direction of the gear teeth 11 and disengage from the gear teeth 11. The inspection personnel only needs to adjust the switch state of the telescopic driving member, and there is no need to manually adjust the depth of the operating rod 500 inserted into the box to complete the inspection of the gear teeth 11, thereby greatly improving the convenience of use of the inspection device, and can ensure the position accuracy of the inspection process, reducing the occurrence of situations where the inspection personnel manually adjust the operating rod 500 and are prone to deviation and tilt, thereby affecting the position accuracy of the carrier 100 and the ultrasonic surface wave probe 410.

[0044] Preferably, the telescopic drive member can be installed in the handle 700, with the on / off button and telescopic button of the telescopic drive member protruding from the handle 700. The inspector can use the handle 700 with one hand to operate the inspection device, thereby further improving the convenience of inspecting the decoration. Specifically, the telescopic drive member can use a linear drive member such as a rack and pinion mechanism or a push rod motor.

[0045] Specifically, in this embodiment, Figure 5 and Figure 6As shown, the sleeve 520 includes a cylindrical body 521, the end of the cylindrical body 521 facing the carrier 100 is a receiving end 522, and the end away from the carrier 100 is a plug-in end 523. The inner wall of the cylindrical body 521 of the receiving end 522 is provided with an annular inner edge 524, the outer wall of the cylindrical body is provided with a first annular outer edge 525, and the outer wall of the cylindrical body 523 is provided with a second annular outer edge 526. In two adjacent sleeves 520, the cylindrical body 521 of the one closer to the carrier 100 is plugged into the annular inner edge 524 of the other. This is a specific form of plug-in cooperation between multiple sleeves 520 of the operating lever 500. Figure 5 The diagram of the operating rod 500 in the extended state is shown. The three sleeves 520 are the first sleeve, the second sleeve and the third sleeve from left to right. The second sleeve is used as a schematic illustration. The right end of the first sleeve body 521 serves as its plug-in end 523 and is plugged into the annular inner edge 524 of the second sleeve. The second annular outer edge 526 of the first sleeve can interfere with the annular inner edge 524 of the second sleeve, thereby limiting the length of the first sleeve extending to the left relative to the second sleeve, reducing or even avoiding the situation where the first sleeve extends too far to the left and separates from the second sleeve, resulting in the disconnection of the operating rod 500. When the telescopic driving member drives the first sleeve to extend to the left until its second annular outer edge 526 abuts the annular inner edge 524 of the second sleeve, the length of the first sleeve extended to the left reaches the maximum length, and the telescopic driving member continues to drive the first sleeve to move to the left, then the second annular outer edge 526 of the first sleeve applies force to the annular inner edge 524 of the second sleeve, thereby driving the second sleeve to move to the left and extend relative to the third sleeve until the second annular outer edge 526 of the second sleeve abuts the annular inner edge 524 of the third sleeve, and the length of the second sleeve extended to the left reaches the maximum length, thereby realizing the continuous extension of the operating rod 500.

[0046] Figure 6 This is a schematic diagram of the operating rod 500 in a shortened state. When the telescopic driving member drives the operating rod 500 to shorten, it first drives the first sleeve to move rightward until the first annular outer edge 525 of the first sleeve abuts the annular inner edge 524 of the second sleeve, and the length of the first sleeve retracted to the right reaches a maximum length. The setting of the first annular extension can limit the retraction length of the first sleeve to reduce the occurrence of the first sleeve completely entering the second sleeve to the right and affecting the continued shortening of the operating rod 500; the telescopic driving member continues to drive the first sleeve to move rightward, and the first annular outer edge 525 of the first sleeve exerts force on the annular inner edge 524 of the second sleeve, thereby driving the second sleeve to move rightward and retract relative to the third sleeve until the first annular outer edge 525 of the second sleeve abuts the annular inner edge 524 of the third sleeve, and the length of the second sleeve retracted to the right reaches a maximum length, thereby achieving continuous shortening of the operating rod 500.

[0047] Of course, the above Figure 5 and Figure 6The three sleeves 520 in the operating rod 500 are used for illustration only. The number of sleeves 520 in the operating rod 500 is not limited to three and may be two, three, or four, etc. Furthermore, when one end of the sleeve 520 is connected to the carrier 100, the first annular outer edge 525 may not be provided at that end; and when the sleeve 520 is located at the end facing away from the carrier 100, the second annular outer edge 526 may not be provided at the sleeve 520.

[0048] Finally, it should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or device 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 device. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or device comprising the element.

[0049] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A gear detection device in a box, characterized in that: The invention comprises a carrier (100) and a limiting assembly (200), wherein the limiting assembly (200) comprises two limiting components (210), the two limiting components (210) are connected to opposite sides of the carrier (100) in a one-to-one correspondence, and the two limiting components (210) and the carrier (100) together form a limiting groove (300) that matches the gear teeth (11) of the gear to be measured (10); wherein the limiting component (210) comprises a connecting arm (211) and a roller (212) pivotally connected to a first end of the connecting arm (211), and the roller (212) is used to match the corresponding side of the gear teeth (11). The tooth side wall (13) is rollingly connected to the roller (212), and the rolling direction of the roller (212) is consistent with the extension direction of the gear teeth (11); the second end of the connecting arm (211) is hinged to the carrier (100), and the two connecting arms (211) of the same limiting assembly (200) can rotate toward or away from each other; the second end of the connecting arm (211) is connected to an extension arm (213), and an elastic reset member (610) is connected between the two extension arms (213) of the same limiting assembly (200), and the elastic reset member (610) is used to drive the two extension arms (213) to rotate away from each other; An ultrasonic surface wave probe (410) is installed at the bottom of the carrier (100), and an operating rod (500) is connected to the carrier (100), wherein the axial direction of the operating rod (500) is consistent with the extension direction of the gear teeth (11).

2. The gear detection device in a box according to claim 1, characterized in that: One end of the extension arm (213) facing away from the connecting arm (211) extends to the top of the carrier (100) and is provided with a magnetic attraction member (620). An electromagnet (630) is installed on the top of the carrier (100).

3. The gear detection device in a box according to claim 1 or 2, characterized in that: An endoscopic probe is installed on the carrier (100), and an end portion of the operating rod (500) facing away from the carrier (100) is provided with an endoscope connected to the endoscopic probe.

4. The gear detection device in a box according to claim 1 or 2, characterized in that: The ultrasonic surface wave probes (410) are arranged in m groups, and the m groups of ultrasonic surface wave probes (410) are arranged at equal intervals along the axial direction of the operating rod (500), and the spacing between two adjacent groups of ultrasonic surface wave probes (410) is L; the extension length of the gear teeth (11) of the gear to be measured (10) is S, S=m·L, and m is a positive integer greater than 1.

5. The gear detection device in a box according to claim 1 or 2, characterized in that: The operating rod (500) is hollow inside to form a hollow channel (510), and a wire (420) connected to the ultrasonic surface wave probe (410) extends outward through the hollow channel (510).

6. The gear detection device in a box according to claim 5, characterized in that: The operating rod (500) includes multiple sections of sleeves (520) that are slidably connected in sequence along its axial direction, and the diameters of the multiple sections of the sleeves (520) decrease in sequence in the direction toward the carrier (100); The gear detection device in the box further comprises a telescopic drive member connected to the operating rod (500), a driving end of a drive shaft of the telescopic drive member is connected to a sleeve (520) of the carrier (100) connected to the operating rod (500), and an axial direction of the drive shaft is consistent with an axial direction of the operating rod (500).

7. The gear detection device in a box according to claim 6, characterized in that: The sleeve (520) includes a cylinder (521), the end of the cylinder (521) facing the carrier (100) is a receiving end (522), and the end away from the carrier (100) is a plug-in end (523), the inner wall of the cylinder of the receiving end (522) is provided with an annular inner edge (524), the outer wall of the cylinder is provided with a first annular outer edge (525), and the outer wall of the cylinder of the plug-in end (523) is provided with a second annular outer edge (526); in two adjacent sleeves (520), the cylinder (521) of one close to the carrier (100) is plugged into the annular inner edge (524) of the other.

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