Detection device

Abstract

The invention relates to the technical field of measuring instruments, and discloses a detection device, which comprises a fixed disc used for being fixedly connected with a rotating shaft to be detected; the torque adjusting assembly comprises a traction rod and is used for providing loading force for the rotating shaft to be tested; one end of the spring is connected with the fixed disc and the other end is connected with the traction rod; the angle tester is used for acquiring the rotation angle of the rotating shaft to be tested; according to the detection device, through combined use of the spring and the traction rod, stable and reliable load torque can be provided for the rotating shaft to be detected, an expected detection working condition is achieved, the accuracy of torque and rotation angle detection is improved, the reliability of a detection result is ensured, and the detection device is particularly suitable for service life detection of an electromagnetic lock control device.

Description

Technical Field

[0001] The invention relates to the technical field of measuring instruments, in particular to a detection device. Background Art

[0002] The rotary electromagnetic locking device generates electromagnetic attraction through the excitation of the coil. Under the action of the electromagnetic attraction, the armature part's shaft can overcome the external load torque and rotate a certain angle. When the torque generated by the product is balanced with the external load torque, the rotation stops. After the coil is de-excited, the electromagnetic attraction disappears, and under the action of the external load torque, the shaft rotates in the opposite direction to return to its initial state.

[0003] In the fields of aerospace, airborne pylons, missile fuses, etc., rotary electromagnetic locking device products are widely used in mechanical motion control of specific mechanisms. The key performance indicators of this product are torque and rotation angle. When conducting life tests, it is even more necessary to test the torque and rotation angle of the product to verify the reliability of the product. Traditional torque detection usually uses a method of hanging weights on extended rods to provide load force. This method can barely be applied to a single test, but when repeated tests are required, the repeated movement of the weights will cause the connected rods to be subjected to a large inertial impact of the weights, causing the rods to rotate unnecessary or even deform, and the corresponding force arm to change unexpectedly, causing the applied load torque to change significantly, thereby affecting the judgment of the rotation angle and causing inaccurate test results. Summary of the invention

[0004] The purpose of the present invention is to provide a detection device in the related art, which can effectively reduce the amplitude of the change of the applied load torque when detecting the rotating shaft to be tested, thereby improving the accuracy of the torque and rotation angle detection and ensuring the reliability of the detection results.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A detection device includes: a fixed plate for fixedly connecting with a rotating shaft to be tested; a torque adjustment assembly including a pulling rod for providing a load force for the rotating shaft to be tested; a spring, one end of which is connected to the fixed plate and the other end is connected to the pulling rod; and an angle tester for obtaining the rotation angle of the rotating shaft to be tested.

[0007] The detection device of the present invention replaces the connecting rod member of the traditional detection device with the spring. The spring has a relatively small stiffness. In multiple repeated rotation tests, through the elastic deformation of the spring itself, the impact on the structure providing the load force can be greatly reduced. For example, when selecting a hanging weight, it will not drive the weight to move back and forth significantly. Therefore, using the spring as the connecting member is beneficial to the stability of the initial load force transmission. By using the pull rod to replace the weight to provide the load force, the problem of inertial impact caused by the reciprocating movement of the weight is completely avoided, reducing the additional force generated on the spring and keeping the load torque basically constant. Therefore, the combined use of the spring and the pull rod can provide a stable and reliable load torque for the rotating shaft to be tested, achieve the expected detection working condition, improve the accuracy of torque and rotation angle detection, and ensure the reliability of the detection result. It is particularly suitable for the life detection of electromagnetic lock control devices.

[0008] In some alternative embodiments, the connection position of the spring on the fixed disk is arranged close to the axis of the rotating shaft to be tested.

[0009] In some alternative embodiments, a groove adapted to the rotating shaft to be tested is provided on one side of the fixed disk. The groove is used for clamping the end of the rotating shaft to be tested, and the spring is connected to the opposite side of the fixed disk.

[0010] In some alternative embodiments, a mounting bracket is detachably connected to the side of the fixed disk away from the rotating shaft to be tested, and the angle tester is fixed to the mounting bracket.

[0011] In some alternative embodiments, the detection device further includes an angle sensing component. The angle sensing component includes a base, a photoelectric sensor is fixed to the base, and a baffle is provided on the fixed disk. The baffle is used to block the optical signal of the photoelectric sensor.

[0012] In some alternative embodiments, the base includes a vertical section and a horizontal section. The photoelectric sensor is fixed to the vertical section, and a waist-shaped hole is provided on the horizontal section. The waist-shaped hole is used for installing and fixing the base.

[0013] In some alternative embodiments, one end of the baffle away from the fixed disk is provided with an inclined surface, and the inclination angle of the inclined surface is adapted to the rotation angle of the rotating shaft to be tested.

[0014] In some alternative embodiments, the torque adjustment component further includes a fixed frame, a rod sleeve, and a connecting member. The pull rod is threadedly connected to the fixed frame. The rod sleeve covers the end of the pull rod to form an installation space for the connecting member. One end of the connecting member is rotatably connected to the rod sleeve, and the other end passes through the rod sleeve and is connected to the spring.

[0015] In some alternative embodiments, a reference line is provided on the fixing bracket, and a scale line for indicating the moving distance is provided on the pulling rod.

[0016] In some alternative embodiments, the detection device further includes a fixing base for placing the electromagnetic lock control device to be tested, and the torque adjustment assembly is mounted on the fixing base. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 is a schematic structural diagram of the detection device described in the embodiment;

[0019] Figure 2 is a perspective view of the fixing plate described in the embodiment;

[0020] Figure 3 is a front view of the fixing plate described in the embodiment;

[0021] Figure 4 is a schematic structural diagram of the angle tester described in the embodiment;

[0022] Figure 5 is a schematic structural diagram of the torque adjustment assembly described in the embodiment;

[0023] Figure 6 is a schematic structural diagram of the angle sensing assembly described in the embodiment Figure 1 ;

[0024] Figure 7 is a schematic structural diagram of the angle sensing assembly described in the embodiment Figure 2 ;

[0025] Reference numerals in the drawings: 100 - detection device, 110 - fixing plate, 111 - groove, 112 - mounting bracket, 113 - retaining piece, 1131 - inclined surface, 120 - torque adjustment assembly, 121 - pulling rod, 122 - fixing bracket, 123 - rod sleeve, 124 - connecting rod member, 125 - limiting member, 130 - spring, 140 - angle tester, 150 - angle sensing assembly, 151 - base, 1511 - vertical section, 1512 - horizontal section, 1513 - kidney-shaped hole, 152 - photoelectric sensor, 160 - fixing base, 200 - electromagnetic lock control device to be tested. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0027] For the rotary electromagnetic lock control device product, the inventor uses traditional torque detection. Usually, weights are suspended on a certain lever arm from the center of the rotating shaft to provide the load force. This method is okay for single measurement. However, during multiple tests, due to the large inertial impact of the weights, the lever arm structure rotates relative to the product rotating shaft or the lever arm undergoes large deformation, thus changing the magnitude of the applied torque and affecting the judgment of the rotation angle value. In addition, the structure of the conventional detection device is relatively heavy, and the fixture is rather bulky, which is not convenient for handling and affects the test efficiency. During the life test, due to its own structural limitations, it does not have contacts like contactors or relays, so it cannot feedback the action status of the product by detecting the on-off of the contacts. Therefore, currently, it can only be monitored by the naked eye of the operator. The monitoring time is long and it is prone to mistakes, and it is impossible to accurately judge whether the product operates reliably. A reliable operation means that the rotating shaft drives a specified load torque to rotate within a specified angle range.

[0028] The following describes the present application in conjunction with the accompanying drawings and with reference to specific embodiments:

[0029] Embodiment

[0030] As Figure 1 shown, it is a schematic structural diagram of a detection device 100 of the present invention. And in order to clearly show the structure of the fixed disk 110, Figure 1 the angle tester 140 on the fixed disk 110 is separately shown in a split view. A detection device 100 of the present invention includes:

[0031] A fixed disk 110, which is used to be fixedly connected to the rotating shaft to be measured;

[0032] A torque adjustment assembly 120, which includes a pull rod 121 and is used to provide a load force for the rotating shaft to be measured;

[0033] A spring 130, one end of which is connected to the fixed disk 110 and the other end is connected to the pull rod 121;

[0034] An angle tester 140, which is used to obtain the rotation angle of the rotating shaft to be measured.

[0035] The rotating shaft to be measured refers to the rotating shaft structure on the electromagnetic lock control device 200 to be measured. The fixed disk 110 is fixedly connected to the rotating shaft to be measured. For example, it can be adhesively connected to the end face of the rotating shaft to be measured or sleeved on the side of the rotating shaft to be measured in various ways for connection and fixation, so that the fixed disk 110 and the rotating shaft rotate synchronously. The pull rod 121 can be directly connected to the spring 130 for pulling, or indirectly connected to the spring 130.

[0036] As a connecting member between the torque adjustment assembly 120 and the fixed disk 110, the spring 130 applies a load by directly or indirectly pulling the spring 130 through the pull rod 121 of the torque adjustment assembly 120, providing an initial load force for the fixed disk 110 and the rotating shaft to be measured. When the rotating shaft drives the fixed disk 110 to rotate, it will increase the elastic potential energy of the spring 130 and at the same time reduce the lever arm length. Therefore, overall, it can effectively control the change range of the load torque, making the load torque in the entire detection process tend to be constant, and then being able to more accurately simulate the working condition of the rotating shaft to be measured rotating under the action of a preset torque. Then, the rotation angle of the rotating shaft to be measured is obtained through the angle tester 140, realizing accurate detection of the torque and the rotation angle.

[0037] The detection device 100 of the present invention replaces the connecting rod and the weight of the traditional detection device 100 with the spring 130. The stiffness of the spring 130 is relatively small. In multiple repeated rotation tests, through the elastic deformation of the spring 130 itself, it can greatly reduce the adverse effects on the components providing the load force. For example, when choosing to hang a weight to provide the load force, the spring 130 will not drive the weight to move back and forth significantly. Therefore, using the spring 130 as a connecting member is beneficial to the stability of the initial load force transmission. Further, by using the pull rod 121 and the spring 130 to replace the weight to provide the load force, the problem of inertial impact caused by the reciprocating movement of the weight is completely avoided, reducing the additional force on the spring 130, making the load torque basically remain constant. Therefore, the combined use of the spring 130 and the pull rod 121 can provide a stable and reliable load torque for the rotating shaft to be measured, achieving the expected detection working condition, improving the accuracy of torque and rotation angle detection, and ensuring the reliability of the detection result, especially suitable for the life detection of electromagnetic lock control devices.

[0038] In some optional embodiments, the connection position of the spring 130 on the fixed disk 110 is set close to the axis of the rotating shaft to be measured.

[0039] The connection position of the spring 130 can greatly reduce the lever arm length of the load force. When the rotating shaft to be measured rotates and pulls the spring 130, it can effectively reduce the length change of the spring 130, that is, reduce the change of the elastic potential energy of the spring 130, and further reduce the change range of the load torque, thereby improving the accuracy of detection.

[0040] The specification of the spring 130 can be selected as a type with a relatively small stiffness. For example, a light extension spring can be selected, which can minimize the elastic potential energy increased by the rotation of the to-be-tested rotating shaft of the spring 130 and is more conducive to maintaining the stability of the load torque.

[0041] In some alternative embodiments, a groove 111 adapted to the to-be-tested rotating shaft is formed on one side of the fixed disk 110. The groove 111 is used for clamping with the end of the to-be-tested rotating shaft, and the spring 130 is connected to the opposite side of the fixed disk 110.

[0042] The groove 111 adapted to the to-be-tested rotating shaft means that the shape and size of the groove 111 are equivalent to the cross-section of the to-be-tested rotating shaft, so that the fixed disk 110 can directly cover and clamp the end of the to-be-tested rotating shaft. The socket fixing connection operation is simple and easy to disassemble, which can improve the efficiency of on-site installation and testing of the fixed disk 110 and is not easy to damage the to-be-tested rotating shaft.

[0043] The groove 111 is formed on the back of the fixed disk 110, and the spring 130 is correspondingly connected to the front of the fixed disk 110, which is beneficial to further optimize the structural volume of the fixed disk 110, that is, the area of the back of the fixed disk 110 is slightly larger than the end face of the rotating shaft. At the same time, it is also more conducive to the spring 130 being arranged close to the axis of the to-be-tested rotating shaft.

[0044] In some alternative embodiments, an installation frame 112 is detachably connected to the side of the fixed disk 110 away from the to-be-tested rotating shaft, and the angle tester 140 is fixed to the installation frame 112.

[0045] Designing and installing the angle tester 140 on the fixed disk 110 not only reduces the difficulty of obtaining the rotation angle, but also improves the integration of the device, reduces the installation difficulty of the angle tester 140, and eliminates the need for an additional separate installation bracket.

[0046] In some alternative embodiments, the detection device 100 further includes an angle sensing component 150. The angle sensing component 150 includes a base 151, a photoelectric sensor 152 is fixed on the base 151, and a stop piece 113 is provided on the fixed disk 110. The stop piece 113 is used to block the optical signal of the photoelectric sensor 152.

[0047] The rotation of the fixed disk 110 will correspondingly drive the rotation of the stop piece 113. With the assistance of the angle tester 140, the monitoring position of the photoelectric sensor 152 can be accurately determined, so that when the stop piece 113 rotates to a preset angle, it can just be recognized and sensed by the photoelectric sensor 152, thereby realizing long-term repeated monitoring of the rotation angle of the to-be-tested rotating shaft.

[0048] When the traditional detection device 100 conducts a life test, it manually monitors the operation of the product, that is, whether the rotation angle range of the rotating shaft under the specified load torque meets the expectations. However, the monitoring time of the entire test is long, it is easy to make mistakes, and it is difficult to accurately judge that the repeated operations of the product are all reliable;

[0049] Through the design of the angle sensing component 150, the manual monitoring of the rotation angle is replaced. This not only greatly saves labor costs, but also the monitoring results are accurate and reliable. After the initial angle detection using the angle tester 140, the angle tester 140 can be directly disassembled and removed for subsequent tests, avoiding the fixed disk 110 from bearing too much pressure and affecting the detection test.

[0050] In some alternative embodiments, the base 151 includes a vertical section 1511 and a horizontal section 1512. The photoelectric sensor 152 is fixed to the vertical section 1511, and the horizontal section 1512 is provided with a waist-shaped hole 1513 for installing and fixing the base 151.

[0051] According to the needs of the product to be detected, when detecting different rotation angles of the rotating shaft to be tested, the monitoring position of the photoelectric sensor 152 will also be changed accordingly. The base 151 is usually fixed on a platform or a mounting bracket during the test. The base 151 is installed through the waist-shaped hole 1513, so that the installation position of the base 151 can be flexibly adjusted within the waist-shaped hole 1513. The photoelectric sensor 152 is fixed to the vertical section 1511 of the base 151, which is convenient for adjusting the position of the horizontal section 1512 of the base 151, and thus realizes the change of the monitoring position of the photoelectric sensor 152.

[0052] In some alternative embodiments, one end of the baffle 113 away from the fixed disk 110 is provided with an inclined surface 1131, and the inclination angle of the inclined surface 1131 is adapted to the rotation angle of the rotating shaft to be tested.

[0053] One end of the baffle 113 is fixed to the fixed disk 110, and the other end can move into or out of the sensing area of the photoelectric sensor 152. Since the baffle 113 swings back and forth with the fixed disk 110, when the rotating shaft to be tested rotates to the expected rotation angle, the inclined surface 1131 enables the baffle 113 itself to enter the entire sensing area at the same time, avoiding the rotating baffle 113 from being inductively recognized by the photoelectric sensor 152 prematurely or later, and improving the detection accuracy;

[0054] At the same time, for different rotation angles corresponding to different test products, based on the single adjustment direction of the movement of the base 151, it is more convenient to directly replace the baffle 113 with an adapted inclined surface 1131 than to adjust the installation angle of the photoelectric sensor.

[0055] In addition, the sensing portion of the baffle 113 corresponding to the photoelectric sensor 152 has a sufficient width to ensure that the baffle 113 can effectively block the entire sensing area when moving in and out of the sensing area of ​​the photoelectric sensor 152 to avoid counting errors.

[0056] In some optional embodiments, the torque adjustment assembly 120 also includes a fixing frame 122, a rod sleeve 123 and a connecting member 124. The pulling rod 121 is threadedly connected to the fixing frame 122. The rod sleeve 123 is covered at the end of the pulling rod 121 to form an installation space for the connecting member 124. One end of the connecting member 124 is rotatably connected to the rod sleeve 123, and the other end passes through the rod sleeve 123 and is connected to the spring 130.

[0057] The pulling rod 121 is installed on a fixing frame 122 with an internal thread through a thread opened on the surface, and can then be screwed in or out relative to the fixing frame 122 to form an easily adjustable horizontal displacement, thereby achieving stable pulling control of the spring 130. The pulling rod 121 is indirectly connected to the spring 130 through the cooperation of the rod sleeve 123 and the connecting member 124. Since the connecting member 124 is constrained by horizontal displacement in the installation space of the rod sleeve 123, but the connecting member 124 is flexibly rotatable in the rod sleeve 123, when the pulling rod 121 forms a pulling force through rotation, the torsional effect on the spring 130 can be reduced, that is, the spring 130 and the connecting member 124 can be prevented from generating unnecessary torsion as the pulling rod 121 rotates, thereby further improving the stability of the load torque.

[0058] In some optional implementations, the fixing frame 122 is provided with a reference line, and the pulling rod 121 is provided with a scale line showing the moving distance.

[0059] By marking the scale lines according to the reference line of the base 151 and reading the corresponding scale values, after determining the specifications and dimensions of the spring 130, the load force provided can be converted by the moving distance of the pulling rod 121. The scale lines of the pulling rod 121 can facilitate real-time acquisition and adjustment of the load torque provided by the pulling rod 121 according to the working conditions.

[0060] In some optional implementations, the detection device 100 further includes a fixing seat 160 , and the fixing seat 160 is used to place the electromagnetic lock control device 200 to be tested, and the torque adjustment assembly 120 is installed on the fixing seat 160 .

[0061] The traditional detection device 100 is heavy in weight, and the fixture is also rather bulky, making it inconvenient to carry. Moreover, each component is arranged separately, resulting in low efficiency in on-site installation and testing. For the detection device 100 of the present invention, the use of weights is cancelled, and at the same time, the structure of each component is optimized, effectively reducing the overall weight. Through the fixed seat 160, the overall installation of each detection component and the product to be tested can be achieved, which is easy to carry and also facilitates on-site installation and detection, improving the testing efficiency.

[0062] Based on the convenience of production and processing and the requirements of specific working conditions, certain selections and combinations are made among various optional implementation manners. For example, Figure 1 As shown, the detection device 100 specifically includes a fixed disk 110, a torque adjustment component 120, a spring 130, and a fixed seat 160.

[0063] The fixed seat 160 serves as a common platform for each component of the detection device 100 and has an area for placing the rotary electromagnetic lock control device. After placing the rotary electromagnetic lock control device to be tested on the fixed seat 160, the end face of the rotating shaft to be tested faces upward, and two groups of protruding ribs are provided on the side of the rotating shaft to be tested.

[0064] For example, Figure 2 As shown, the fixed disk 110 is a flat cylindrical structure. A groove 111 is formed on the back of the fixed disk 110, and the shape and size of the groove 111 are adapted to the cross-section of the rotating shaft to be tested, so that the fixed disk 110 can be sleeved and fixed at the end of the rotating shaft to be tested through the groove 111 and rotate synchronously with the rotating shaft to be tested. The groove 111 has a notch corresponding to the rib, further ensuring that the fixed disk 110 and the rotating shaft to be tested will not rotate relative to each other. Further, the diameter of the fixed disk 110 can be controlled to be slightly larger than the diameter of the rotating shaft to be tested, that is, the side wall thickness of the groove 111 is controlled to be as small as possible based on the structural strength.

[0065] For example, Figure 3 and Figure 4 As shown, an installation bracket 112 is fixed to the front of the fixed disk 110 by screws, facilitating the angle tester 140 to be placed on the fixed disk 110 and rotate synchronously with the rotating shaft to be tested, so as to obtain and display the rotation angle of the rotating shaft to be tested. A hanging ring for connecting the tension spring is also provided on the front of the fixed disk 110, and the position of the hanging ring is set as close as possible to the axis of the rotating shaft to be tested.

[0066] The fixed seat 160 has an area for placing the torque adjustment component 120. For example, Figure 5As shown in the figure, the torque adjustment assembly 120 includes a fixing bracket 122, a pulling rod 121, a rod sleeve 123 and a connecting member 124. The fixing bracket 122 is installed on the fixing base 160 by bolts, and the fixing bracket 122 is provided with a horizontal threaded through hole. The pulling rod 121 is a circular rod, which is horizontally installed in the through hole of the fixing bracket 122 by threaded connection and penetrates through the fixing bracket 122. One end of the pulling rod 121 serves as an operating end with a turntable of larger diameter for easy manual rotation, and the other end serves as a connecting end to be fixedly connected with the rod sleeve 123. The edge of the top of the fixing bracket 122 near the operating end can be used as a reference line, and scale lines are provided on the rod body of the pulling rod 121, so that the distance of the horizontal movement of the pulling rod 121 relative to the fixing bracket 122 can be intuitively read, thus facilitating the control of the pulling force to adjust the applied load force;

[0067] The rod sleeve 123 is a hollow cylindrical structure. The inner wall of the rod sleeve 123 can be provided with threads for easy fixation with the pulling rod 121. Furthermore, the distance between the inner bottom of the rod sleeve 123 and the end face of the pulling rod 121 is also easy to adjust flexibly, so as to change the pulling force on the spring 130. An avoidance hole for the connecting member 124 to penetrate is provided at the bottom of the rod sleeve 123. One end of the connecting member 124 is a disc structure and is constrained within the rod sleeve 123, and the other end extends out of the rod sleeve 123 through the avoidance hole and is provided with a hanging hole for connecting the tension spring. The connecting member 124 and the rod sleeve 123 can rotate relative to each other. Therefore, when the rod sleeve 123 is sleeved on the end of the pulling rod 121 through threads, it can not only restrict the movement of the connecting member 124 in the horizontal direction, but also prevent the connecting member 124 from being forced to rotate when the rod sleeve 123 rotates synchronously with the pulling rod 121.

[0068] Limit members 125 are provided on the tops of both the fixing bracket 122 and the rod sleeve 123 to ensure the stability of the load force provided in subsequent tests. The limit members 125 can use vertical limit screws. The limit screw of the fixing bracket 122 can limit the movement of the pulling rod 121 relative to the fixing bracket 122, and the limit screw of the rod sleeve 123 can limit the movement of the rod sleeve 123 relative to the pulling rod 121. The spring 130 is a light tension spring with hooks at both ends. One end is hooked into the hanging hole of the connecting member 124 to achieve indirect connection with the pulling rod 121, and the other end is hooked into the hanging ring on the front of the fixing disk 110 to achieve connection with the fixing disk 110, thus completing the connection and installation of the torque adjustment assembly 120 and the fixing disk 110. In addition, the detachable connection of the tension spring facilitates the replacement of different specifications and sizes according to different working conditions at any time.

[0069] Due to the limitation of the self-structure of the rotary electromagnetic lock control device, it does not have contacts like contactors or relays, and it is impossible to feedback the action status of the product by detecting the on-off of the contacts. Previously, it was necessary to monitor manually by the naked eye. The monitoring time was long and it was easy to make mistakes, and it was impossible to accurately judge whether the product operated reliably;

[0070] Therefore, the detection device 100 is further provided with an angle sensing component 150. The fixing base 160 correspondingly has an area for placing the angle sensing component 150, such as Figure 6 and Figure 7 As shown, the angle sensing component 150 includes a base 151 and a photoelectric sensor 152. The photoelectric sensor 152 is an infrared photoelectric sensor 152. The main body is a U-shaped structural member. The inner side of one end is the optical signal emitting end, and the other end is the optical signal receiving end. The base 151 is an L-shaped structural member, having a vertical section 1511 and a horizontal section 1512. The U-shaped bottom of the photoelectric sensor 152 is integrally fixed on the vertical section 1511 by screws. The horizontal section 1512 of the base 151 is provided with a waist-shaped hole 1513. The fixing base 160 is provided with screw holes for installing the base 151 at appropriate positions. The installation of the base 151 is achieved by using an adapter bolt in the waist-shaped hole 1513. At the same time, the position of the bolt in the waist-shaped hole 1513 can be changed to adjust the monitoring position of the photoelectric sensor 152.

[0071] Between the mounting bracket 112 and the fixed disk 110, a retaining piece 113 is also clamped and fixed. The retaining piece 113 can rotate into the U-shaped opening of the infrared photoelectric sensor 152 as the rotating shaft rotates, that is, it can move into the sensing area of the photoelectric sensor 152. At the same time, the end of the retaining piece 113 has a certain width, so that during the period when the retaining piece 113 moves into and out of the sensing area, the retaining piece 113 can effectively block the entire sensing area, so that only one electrical signal will be generated when the to-be-tested rotating shaft makes a reciprocating rotation once, avoiding counting errors of the angle sensing component 150. A slope 1131 is also provided at the end of the retaining piece 113. The inclination angle of the slope 1131 is adapted to the tested rotation angle, so that the entire end of the retaining piece 113 can enter the sensing area synchronously, reducing the possibility of monitoring errors.

[0072] When conducting the life detection test, by turning the pull rod 121 in the torque adjusting component 120, the tension spring is stretched or shortened, and the load torque applied to the to-be-tested rotating shaft is increased or decreased correspondingly. The magnitude of the load torque can be read through the scale line on the pull rod 121 to ensure that the provided initial load torque meets the requirements of the life test. According to the working conditions, the life detection of the electromagnetic lock control device products with opposite rotation directions can also be carried out by changing the placement position of the to-be-tested electromagnetic lock control device 200 product and the acting direction of the tension spring.

[0073] When the to-be-tested electromagnetic lock control device product is energized, the retaining piece 113 fixed on the to-be-tested rotating shaft and the angle tester 140 will both rotate accordingly. The angle tester 140 can directly display the actual rotation angle of the to-be-tested rotating shaft. When the to-be-tested rotating shaft can reach the expected rotation angle, it indicates that the single detection of the torque and the rotation angle is qualified. At this time, the angle tester 140 can be disassembled.

[0074] Then continue with the subsequent life detection. Based on the position of the baffle 113 at the expected rotation angle, move the position of the base 151 through the kidney-shaped hole 1513, and then adjust the monitoring position of the photoelectric sensor 152 so that the baffle 113 can just completely cover the light signal within the sensing area at this time. When the electromagnetic lock control device product to be tested is de-energized, under the action of the load torque, the baffle 113 will rotate and reset following the rotation of the shaft to be tested, and correspondingly move out of the sensing area of the infrared photoelectric sensor 152. When the infrared photoelectric sensor 152 receives the light signal again, it will feedback an electrical signal to the life test bench to complete an action detection. That is, when the rotation angle of the shaft to be tested for each rotation meets the test requirements, the infrared photoelectric sensor 152 will feedback an electrical signal once, and count the rotations that occur repeatedly to achieve the life detection function of the product.

[0075] The detection device 100 provided by the present invention can apply a load torque to the shaft of the electromagnetic lock control device 200 product to be tested, and it is easy to adjust the magnitude of the load torque value to meet the requirements of the load torque value required by the electromagnetic lock control device 200 product to be tested. The applied load torque value can be directly obtained through the scale line of the pull rod 121. The spring stiffness in the device is small, and the lever arm when the load force is converted into the load torque is short. When the shaft to be tested rotates, the change in the length of the spring is small, which improves the stability of the load torque force. The rotation angle range can be directly read through the angle tester 140. The number of actions and whether the action is in place of the electromagnetic lock control device 200 product to be tested can be feedback to the life test bench through the infrared photoelectric sensor 152.

[0076] The overall structure of the detection device 100 is simply designed, with high integration, light weight, strong operability, easy adjustment of the load force, and small change in the applied load torque. The rotation angle detection range is adjustable, which can replace the manual detection of the in-place state of the action. The results of the life test are more accurate and reliable, and it has good application prospects in the detection of rotary electromagnetic lock control devices.

[0077] It should be noted that all the directional indications in the embodiments of the present invention are only used to explain the relative position relationship and movement conditions between components in a specific posture. If this specific posture changes, the directional indication will also change accordingly.

[0078] In the present invention, unless otherwise clearly specified and limited, terms such as "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0079] In addition, in the present invention, descriptions such as "first", "second", etc. are for descriptive purposes only, and should not be construed as indicating or implying their relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between various embodiments may be combined with each other, but it must be based on what can be achieved by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be achieved, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0080] In the description of this specification, descriptions with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. mean that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in this specification.

Claims

1. A detection device, characterized in that, it includes: a fixed disk (110) for fixedly connecting with a rotating shaft to be measured; a torque adjustment component (120) including a pull rod (121) for providing a load force to the rotating shaft to be measured; a spring (130) with one end connected to the fixed disk (110) and the other end connected to the pull rod (121); an angle tester (140) for obtaining the rotation angle of the rotating shaft to be measured.

2. The detection device according to claim 1, characterized in that, the connection position of the spring (130) on the fixed disk (110) is arranged close to the axis of the rotating shaft to be measured.

3. The detection device according to claim 2, characterized in that, a groove (111) adapted to the rotating shaft to be measured is formed on one side of the fixed disk (110), and the groove (111) is used for clamping the end of the rotating shaft to be measured, and the spring (130) is connected to the opposite side of the fixed disk (110).

4. The detection device according to claim 3, characterized in that, a mounting bracket (112) is detachably connected to the side of the fixed disk (110) away from the rotating shaft to be measured, and the angle tester (140) is fixed to the mounting bracket (112).

5. The detection device according to claim 1, characterized in that, the detection device (100) further includes an angle sensing component (150), the angle sensing component (150) includes a base (151), a photoelectric sensor (152) is fixed on the base (151), and a baffle (113) is provided on the fixed disk (110), and the baffle (113) is used for blocking the optical signal of the photoelectric sensor (152).

6. The detection device according to claim 5, characterized in that, the base (151) includes a vertical section (1511) and a horizontal section (1512), the photoelectric sensor (152) is fixed to the vertical section (1511), and a waist-shaped hole (1513) is formed in the horizontal section (1512), and the waist-shaped hole (1513) is used for installing and fixing the base (151).

7. The detection device according to claim 5, characterized in that, a slope (1131) is provided at one end of the baffle (113) away from the fixed disk (110), and the inclination angle of the slope (1131) is adapted to the rotation angle of the rotating shaft to be measured.

8. The detection device according to any one of claims 1 to 7, characterized in that, the torque adjustment component (120) further includes a fixed frame (122), a rod sleeve (123) and a connecting piece (124), the pull rod (121) is threadedly connected to the fixed frame (122), the rod sleeve (123) covers the end of the pull rod (121) to form an installation space for the connecting piece (124), one end of the connecting piece (124) is rotatably connected inside the rod sleeve (123), and the other end passes through the rod sleeve (123) and is connected to the spring (130).

9. The detection device according to claim 8, characterized in that, The fixing bracket (122) is provided with a reference line, and the tension rod (121) is provided with scale lines for displaying the moving distance.

10. The detection device according to claim 8, wherein, the detection device (100) further includes a fixing base (160), the fixing base (160) is used for placing the electromagnetic lock control device (200) to be measured, and the torque adjustment assembly (120) is installed on the fixing base (160).

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