A constant force spring hanger detection apparatus

Abstract

The application discloses a constant force spring support hanger detection device, and belongs to the technical field of constant force spring support hangers. The device comprises a protective shell frame, a positioning mechanism arranged in the protective shell frame and used for restraining and limiting a constant force combined constant force spring support hanger to be detected, and a stretching mechanism arranged in the protective shell frame and used for performing elastic stretching detection on the limited support hanger. The stretching mechanism comprises a displacement frame arranged outside the protective shell frame and used for connecting a stretching end of the support hanger, and a driving assembly arranged outside the protective shell frame and used for driving the displacement frame to move so as to drive the support hanger to stretch. The transmission assembly in the positioning mechanism is used for connecting the jacking assembly and the pressing assembly, the whole positioning and fixing process is completed at one time, multiple independent driving mechanisms do not need to be operated respectively, the detection time is greatly shortened, the detection efficiency is improved, and the application demand of large-scale or rapid detection can be met.

Description

Technical Field

[0001] This application relates to the field of constant force spring supports and hangers, and more specifically, to a testing device for constant force spring supports and hangers. Background Technology

[0002] Constant force spring supports are designed based on the principle of torque balance. Within the allowable load displacement range, their load torque and spring torque always maintain a dynamic balance, thus providing a constant supporting force when pipelines or equipment are displaced, avoiding the generation of additional stress. This characteristic makes them widely used in high-temperature and high-pressure pipeline systems in fields such as power and petrochemicals.

[0003] However, the technology for testing constant force spring supports using laser measuring instruments still has significant limitations. Traditional methods typically require disassembling the spring from the support for individual testing. For example, the spring force testing device disclosed in CN215952908U can only test the performance parameters of the spring itself and cannot reflect the overall performance of the entire support system in its assembled state. In reality, the functionality of a constant force support depends not only on the individual performance of the spring but also on the overall matching and force balance between the spring and the support structure.

[0004] To address the aforementioned issues, existing technologies, such as CN120213444A, propose a constant force combined constant force spring support and hanger testing device. This device uses a second motor to drive the second horizontal lead screw shaft outside the side support plate to rotate. Through gear and sawtooth belt transmission, it drives another lead screw shaft to rotate synchronously. This, in turn, causes two sets of second limiting plates and the bearing plate to move towards each other via symmetrical threaded sections until they are tightly against the bottom of the support and hanger. Then, a first motor drives the first horizontal lead screw shaft at the top frame, and through a similar transmission method, the two sets of first limiting plates clamp the support and hanger body, thereby achieving the positioning and installation of supports and hangers of different specifications, possessing certain applicability and stability.

[0005] Although the technical solution can achieve the corresponding beneficial effects, it still has the following shortcomings: When accurately constraining and limiting the support, multiple independent drive mechanisms need to be operated separately, which is cumbersome and time-consuming, resulting in low detection efficiency and making it difficult to meet the application requirements of large-scale or rapid detection.

[0006] Therefore, it is necessary to propose a new type of constant force combined constant force spring support detection device to solve the above problems.

[0007] In view of this, a testing device for constant force spring supports is proposed. Summary of the Invention

[0008] The purpose of this invention is to provide a testing device for constant force spring supports, in order to solve the problems mentioned in the background art.

[0009] This invention provides the following technical solution: a testing device for a constant force spring support, comprising:

[0010] Protective casing;

[0011] A positioning mechanism, disposed inside the protective housing, is used to constrain and limit the constant force spring support bracket of the measured constant force combination. The positioning mechanism includes:

[0012] The top support assembly is used to push the support bracket to fit tightly against the inner wall of the protective shell;

[0013] A pressing assembly is used to press the support bracket into close contact with the inner wall of the protective shell;

[0014] A transmission assembly, connected between the pressing assembly and the top support assembly, is used to drive the two to work together.

[0015] An electric cylinder is disposed between the top support assembly and the protective housing frame, and is used to drive the top support assembly to move;

[0016] A tensioning mechanism, disposed inside the protective housing, is used to perform elastic tension testing on the already limited support bracket. The tensioning mechanism includes:

[0017] A displacement frame, disposed outside the protective shell, is used to connect the extension end of the support bracket;

[0018] A drive assembly, located outside the protective housing, is used to drive the displacement frame to move in order to stretch the support and hanger.

[0019] As an optional solution to the technical solution in this application, a multi-dimensional sensing system is also included, comprising:

[0020] The rangefinder, a laser rangefinder sensor, is located outside the protective housing and is used to detect the displacement changes of the support and hanger under load.

[0021] The vision sensor, a high-speed industrial camera, is located inside the protective housing and is used to capture the deformation process of the spring under dynamic load.

[0022] As an optional solution to the technical solution in this application, the protective shell includes a support frame and a placement frame;

[0023] The bottom of the support frame is provided with multiple mounting holes for fixing to the test platform with bolts.

[0024] The placement frame has a through window in the middle, and the window is fitted with an organic glass window panel. The double-layered window panel is equipped with a ring-shaped lighting panel.

[0025] As an optional solution to the technical solution in this application, the top support assembly includes a toothed column, a top pressure plate, a guide column, and an extrusion plate;

[0026] The toothed column is slidably disposed within the protective shell and is fixedly connected to the top pressure plate;

[0027] There are four guide pillars, which are fixed to each corner of the extrusion plate. Each guide pillar is fitted with a spring and slides in cooperation with the top pressure plate.

[0028] As an optional solution to the technical solution in this application, the pressing assembly includes a closing cover plate, a hinge seat, a pressing plate, and a rubber pressure roller;

[0029] One end of the closed cover is hinged to the protective shell frame via a hinge seat, and one end of it has a bent structure.

[0030] The pressing plates are symmetrically staggered and rotatably connected to the rubber pressure rollers, and a memory metal elastic element is connected between the pressing plates and the hinge seat.

[0031] As an optional solution to the technical solution in this application, the surface of the rubber roller is provided with a spiral anti-slip groove, and the groove is embedded with a rubber strip.

[0032] As an optional solution to the technical solution in this application, the transmission assembly includes a gear shaft and a pulley structure;

[0033] The gear shaft is rotatably mounted inside the protective housing and is connected to the top support assembly in a transmission manner.

[0034] The pulley structure includes a pulley and a timing belt, which are symmetrically arranged and drive the gear shaft and the pressing assembly.

[0035] As an optional solution to the technical solution of this application, the displacement frame includes a sliding frame, a half-tooth plate and a roller frame;

[0036] The sliding frame is slidably connected to the protective shell and is provided with bolt pins for connecting the tension end of the support bracket;

[0037] The half-tooth plate is fixedly connected between the slide frame and the roller frame, and is connected to the drive assembly for transmission.

[0038] The roller frame is fixed to one side of the slide frame and can roll into contact with the pressing assembly.

[0039] As an optional solution to the technical solution in this application, the drive component includes a servo motor and a variable gear disk;

[0040] The servo motor is fixed to one side of the protective housing via a motor mount and is electrically connected to an external control terminal.

[0041] The variable gear disk is fixed to the output shaft of the servo motor and is connected to the displacement frame via a transmission.

[0042] As an optional solution to the technical solution of this application, the variable gear disk includes a toothed disk, an arc tooth plate, and an electric push rod;

[0043] The toothed disc is fixed to the output end of the servo motor.

[0044] Multiple of the aforementioned arc-tooth plates are equidistantly slidably disposed within the toothed disc along a ring and are fixed to the telescopic end of the electric push rod;

[0045] Multiple electric push rods are fixed to one side of the toothed disc and electrically connected to an external control terminal.

[0046] Compared with the prior art, the beneficial effects of the present invention are:

[0047] 1. This application connects the top support assembly and the pressing assembly through the transmission component in the positioning mechanism. When the electric cylinder drives the top support assembly to move, the movement of the toothed column drives the gear shaft meshing with it to rotate. The gear shaft transmits power to the pressing assembly through the pulley structure, i.e., the transmission between the pulley and the synchronous belt, so that the pressing assembly and the top support assembly move synchronously. When the top support assembly is working, the electric cylinder starts, the piston rod extends and pushes the toothed column to slide inside the protective shell. The toothed column drives the top pressure plate to move towards the support bracket. At the same time, the pressing plate gradually approaches the support bracket under the action of the guide column and the spring, and finally pushes the support bracket against the inner wall of the protective shell. At this time, the transmission component drives the pressing assembly to move, the closing cover rotates around the hinge seat, and the pressing plate, under the action of the memory metal elastic element, moves the rubber pressure roller towards the support bracket and presses it against the inner wall of the protective shell. The entire positioning and fixing process is completed in one go, without the need to operate multiple independent drive mechanisms separately, which greatly shortens the detection time, improves the detection efficiency, and can meet the application requirements of large-scale or rapid detection.

[0048] 2. When the displacement frame drives the support bracket for telescopic testing, the roller frame in the displacement frame can, on the one hand, apply further pressure to the closed cover plate of the fitting frame, thereby strengthening the limiting effect and further ensuring the stability of the positioning mechanism's positioning constraint on the support bracket. On the other hand, during the movement of the displacement frame, the roller frame makes rolling contact with the pressing component, which not only provides auxiliary support for the displacement frame and reduces the friction between the displacement frame and other components during movement, making the movement of the displacement frame smoother and more stable, but also provides a stable foundation for accurate tensile testing. At the same time, it further enhances the fixing effect of the positioning mechanism on the support bracket to be tested, ensuring that the position of the support bracket remains accurate throughout the testing process, thus effectively guaranteeing the high accuracy of the test results.

[0049] 3. This application uses a drive assembly consisting of a servo motor and a variable gear plate. When it is necessary to adjust the variation of the tensile force, the external control terminal sends a signal to the electric push rod. The telescopic end of the electric push rod drives the arc tooth plate to slide within the toothed plate, changing the meshing position and number of meshing teeth between the arc tooth plate and the half tooth plate of the displacement frame. This achieves precise control of the movement speed and displacement of the displacement frame, thereby precisely adjusting the tensile force and tensile process of the support and hanger to meet the precise control of the tensile process of the support and hanger under different testing requirements. This ensures that the test results can accurately reflect the performance of the support and hanger under various working conditions, improving the accuracy and reliability of the test. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the left side of the overall half-section structure of the testing equipment for the constant force spring support according to an embodiment of the present invention;

[0051] Figure 2 This is a schematic diagram of the right side of the overall half-section structure of the testing equipment for the constant force spring support according to an embodiment of the present invention;

[0052] Figure 3 This is a schematic diagram of the positioning mechanism of the detection equipment for the constant force spring support bracket according to an embodiment of the present invention;

[0053] Figure 4 This is a schematic diagram of the tensile mechanism structure of the testing equipment for the constant force spring support bracket according to an embodiment of the present invention;

[0054] Figure 5 This is a schematic diagram of the testing equipment for the constant force spring support in an embodiment of the present invention;

[0055] Figure 6 This is a schematic diagram of the top support assembly structure of the testing equipment for the constant force spring support bracket according to an embodiment of the present invention;

[0056] Figure 7 This is a schematic diagram of the pressing assembly structure of the testing equipment for the constant force spring support bracket according to an embodiment of the present invention;

[0057] Figure 8 This is a bottom view schematic diagram of the transmission component structure of the testing equipment for the constant force spring support bracket according to an embodiment of the present invention;

[0058] Figure 9 This is a bottom view schematic diagram of the displacement frame structure of the constant force spring support and hanger detection equipment according to an embodiment of the present invention;

[0059] Figure 10 This is a schematic diagram showing the disassembled structure of the drive assembly of the testing equipment for the constant force spring support bracket according to an embodiment of the present invention.

[0060] Explanation of the labels in the diagram: 100, Protective shell; 110, Support frame; 120, Placement frame; 200, Positioning mechanism; 210, Top support assembly; 211, Toothed column; 212, Top pressure plate; 213, Guide column; 214, Extrusion plate; 220, Pressing assembly; 221, Closing cover plate; 222, Hinge seat; 223, Pressing plate; 224, Rubber pressure roller; 230, Transmission assembly; 231, Gear shaft; 232. Pulley; 240. Electric cylinder; 300. Tensioning mechanism; 310. Displacement frame; 311. Slide frame; 312. Half toothed plate; 313. Roller frame; 320. Drive assembly; 321. Servo motor; 322. Variable gear plate; 323. Gear plate; 324. Arc toothed plate; 325. Electric push rod; 400. Multi-dimensional sensing system; 410. Rangefinder; 420. Vision sensor. Detailed Implementation

[0061] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0062] Reference Figure 1-4 A testing device for constant force spring supports, comprising:

[0063] Protective housing 100;

[0064] Positioning mechanism 200, disposed inside protective housing 100, is used to constrain and limit the constant force spring support bracket of the constant force combination under test. Positioning mechanism 200 includes:

[0065] The top support assembly 210 is used to push the support bracket to fit tightly against the inner wall of the protective shell 100;

[0066] The pressing assembly 220 is used to press the support bracket and the inner wall of the protective shell 100 to fit tightly together.

[0067] The transmission assembly 230 is connected between the pressing assembly 220 and the top support assembly 210, and is used to drive the two to work together.

[0068] An electric cylinder 240 is disposed between the top support assembly 210 and the protective housing 100, and is used to drive the top support assembly 210 to move.

[0069] A tensioning mechanism 300, disposed inside the protective housing 100, is used to perform elastic tension testing on the limited support. The tensioning mechanism 300 includes:

[0070] The displacement bracket 310 is located outside the protective shell 100 and is used to connect the tension end of the support bracket.

[0071] The drive assembly 320 is located outside the protective housing 100 and is used to drive the displacement frame 310 to move so as to stretch the support and hanger.

[0072] The testing equipment for this constant force spring support can efficiently and accurately test the constant force combined constant force spring support through the coordinated work of the upper positioning mechanism 200 and the tensioning mechanism 300.

[0073] When the electric cylinder 240 pushes the top support assembly 210 to move, the movement of the toothed column 211 drives the gear shaft 231 meshing with it to rotate. The gear shaft 231 transmits power to the pressing assembly 220 through the pulley structure 232, that is, the transmission between the pulley and the synchronous belt, so that the pressing assembly 220 and the top support assembly 210 move synchronously and jointly complete the positioning and fixing of the support and hanger.

[0074] When the top support assembly 210 is working, the electric cylinder 240 is activated, its piston rod extends, and pushes the toothed column 211 to slide inside the protective shell 100. The toothed column 211 drives the top pressure plate 212, which is fixedly connected to it, to move towards the support. At the same time, the extrusion plate 214, under the action of the guide column 213 and the spring on the guide column 213, also gradually approaches the support. Finally, the top pressure plate 212 and the extrusion plate 214 push the support against the inner wall of the protective shell 100 to achieve a tight fit, ensuring that the support will not be displaced in the vertical direction during the testing process.

[0075] When the top support assembly 210 starts to operate, the transmission assembly 230 also starts to work. The gear shaft 231 rotates, driving the pressing assembly 220 to operate through the pulley structure 232. The closing cover plate 221 rotates around the hinge seat 222. Under the action of the memory metal elastic element, the pressing plate 223 carries the rubber pressure roller 224 closer to the support. The spiral anti-slip groove on the surface of the rubber pressure roller 224 and the rubber strip inside the groove increase the friction with the support, further pressing the support against the inner wall of the protective shell 100, ensuring the stability of the support in the horizontal direction.

[0076] Reference Figure 5 and Figure 1 The detection equipment for the constant force spring support described in this application embodiment also includes a multi-dimensional sensing system 400, comprising:

[0077] The rangefinder 410 is a laser rangefinder sensor, located outside the protective housing 100, and is used to detect the displacement changes of the support under load.

[0078] The vision sensor 420 is a high-speed industrial camera located inside the protective housing 100, used to capture the deformation process of the spring under dynamic load.

[0079] The testing equipment for this constant force spring support can acquire more comprehensive and accurate testing data through a multi-dimensional sensing system 400, improving the accuracy and reliability of the testing. During the tensile testing process, the rangefinder 410 continuously emits a laser beam, which illuminates a specific position on the support and reflects back. Based on the time difference between the emission and reception of the laser beam, the rangefinder 410 accurately calculates the displacement change of the support under load and transmits the data to an external control terminal in real time, providing key data support for analyzing the mechanical performance of the support. The vision sensor 420 operates in high-speed shooting mode, which can clearly record the subtle deformation of the spring during the tensile process. By analyzing the captured images, information such as the amount of spring deformation, the direction of deformation, and the stress distribution during the deformation process can be obtained, further comprehensively evaluating the performance of the spring and the overall stability of the support system.

[0080] Reference Figure 5 and Figure 1 The protective shell 100 in the constant force spring support testing equipment described in this application embodiment includes a support frame 110 and a placement frame 120;

[0081] The bottom of the support frame 110 is provided with multiple mounting holes for fixing to the test platform with bolts;

[0082] The placement frame 120 has a through window in the middle, and the window is fitted with an plexiglass window panel. The double-layered window panel is equipped with a ring-shaped lighting panel.

[0083] The testing equipment for this constant force spring support improves the safety and observability of the testing process through the protective shell 100. When installing the testing device, align the mounting holes at the bottom of the supporting frame 110 with the corresponding holes on the test platform and tighten the bolts to ensure that the protective shell 100 is firmly installed on the test platform, providing a stable support foundation for the entire testing device. The placement frame 120 is used to place the support under test. The plexiglass window panel not only ensures that the operator can clearly observe the status of the support during the testing process, but also provides a certain degree of protection. The ring-shaped lighting panel inside the double-layer structure window panel provides sufficient and uniform lighting during testing, which facilitates the visual sensor 420 to clearly capture the deformation of the spring, and also makes it convenient for the operator to observe and record on-site.

[0084] Reference Figure 6 and Figure 3 The top support assembly 210 in the constant force spring support testing equipment described in this application embodiment includes a toothed column 211, a top pressure plate 212, a guide column 213 and a pressing plate 214.

[0085] The toothed column 211 is slidably disposed within the protective housing 100 and is fixedly connected to the top pressure plate 212;

[0086] There are four guide posts 213, which are fixed to each corner of the extrusion plate 214. Each guide post 213 is fitted with a spring and slides in cooperation with the top pressure plate 212.

[0087] The testing equipment for this constant force spring support achieves stable and reliable support positioning of the support through the top support assembly 210. The toothed column 211 moves on the sliding track inside the protective shell 100, and its fixed connection with the top pressure plate 212 ensures that the two move synchronously, accurately transmitting the thrust of the electric cylinder 240 to the top pressure plate 212 to achieve the support action of the support. During the support process, the compression plate 214 is connected to the top pressure plate 212 through the guide column 213 and the spring on the guide column 213. When the top pressure plate 212 moves towards the support, the compression plate 214 gradually approaches the support under the buffering effect of the spring, avoiding hard impact on the support. At the same time, the four guide columns 213 ensure the smooth movement of the compression plate 214, so that it can push the support evenly towards the inner wall of the protective shell 100.

[0088] Reference Figure 7 and Figure 3 The pressing assembly 220 in the constant force spring support testing equipment described in this application embodiment includes a closed cover plate 221, a hinge seat 222, a pressing plate 223, and a rubber pressure roller 224.

[0089] One end of the closed cover 221 is hinged to the protective shell 100 via the hinge seat 222, and the other end has a bent structure.

[0090] The pressing plate 223 is symmetrically staggered and rotatably connected to the rubber pressure roller 224, and a memory metal elastic element is connected between the pressing plate 223 and the hinge seat 222.

[0091] Among them, the surface of the rubber pressure roller 224 is provided with a spiral anti-slip groove, and the groove is embedded with rubber strips.

[0092] The testing equipment for this constant force spring support achieves effective pressing and fixing of the support through the pressing assembly 220. The closing cover plate 221 rotates around the hinge seat 222, and its bent structure design allows it to better fit the placement frame 120 for closed protection during rotation, and facilitates the displacement pressing and limiting of the roller frame 313. Working in conjunction with components such as the pressing plate 223, it presses the support against the inner wall of the protective shell 100. When the closing cover plate 221 rotates, it drives the pressing plate 223 to move, and the memory metal elastic element makes the pressing plate... 223 maintains constant pressure on the support and hanger. The rubber pressure roller 224, driven by the pressing plate 223, contacts and rolls with the surface of the support and hanger, further enhancing the pressing effect on the support and hanger. The rolling of the rubber pressure roller 224 can adapt to the unevenness of the support and hanger surface, ensuring the uniformity of the pressing process. The spiral anti-slip groove and rubber strip increase the friction between the rubber pressure roller 224 and the support and hanger, preventing relative sliding between the rubber pressure roller 224 and the support and hanger during the pressing process, thus improving the stability and reliability of the pressing.

[0093] Reference Figure 8 and Figure 3 The transmission component 230 of the constant force spring support testing equipment described in this application embodiment includes a gear shaft 231 and a pulley structure 232;

[0094] The gear shaft 231 is rotatably mounted inside the protective housing 100 and is connected to the top support assembly 210 in a transmission manner.

[0095] The pulley structure 232 includes a pulley and a timing belt, which are symmetrically arranged and drive the gear shaft 231 and the pressing assembly 220.

[0096] The testing equipment for this constant force spring support realizes the coordinated work of the top support assembly 210 and the pressing assembly 220 through the transmission assembly 230, which improves the testing efficiency. The rotation of the gear shaft 231 is achieved by meshing with the toothed column 211, which converts the linear motion of the top support assembly 210 into its own rotational motion, providing power input to the pulley structure 232. When the gear shaft 231 rotates, it drives the pulley in the pulley structure 232 to rotate. The synchronous belt transmits the rotation of the pulley to the pressing assembly 220, so that the pressing assembly 220 and the top support assembly 210 can work together to achieve fast and accurate positioning and fixing of the support.

[0097] Reference Figure 9 and Figure 4 In the constant force spring support testing equipment described in this application embodiment, the displacement frame 310 includes a slide frame 311, a half toothed plate 312, and a roller frame 313;

[0098] The sliding frame 311 is slidably connected to the protective shell 100 and is provided with bolt pins for connecting the tension end of the support bracket;

[0099] Half toothed plate 312 is fixedly connected between slide frame 311 and roller frame 313, and is connected to drive assembly 320 for transmission.

[0100] The roller frame 313 is fixed to one side of the slide frame 311 and can roll into contact with the pressing assembly 220.

[0101] The testing equipment for the constant force spring support achieves stable and precise stretching of the support through the displacement frame 310. The sliding frame 311 slides within the groove on the protective shell 100, ensuring the linearity and stability of the movement of the displacement frame 310. The bolt pin is used to connect with the stretching end of the support, accurately transmitting the movement of the displacement frame 310 to the support, thus achieving the stretching operation of the support. The variable gear plate 322 in the drive assembly 320 meshes with the half-tooth plate 312, driving the half-tooth plate 312 to move, which in turn drives the sliding frame 311 and the roller frame 313 to move. During the movement of the displacement frame 310, the roller frame 313 rolls into contact with the pressing assembly 220, which on the one hand provides auxiliary support for the displacement frame 310 and reduces the friction during the movement of the displacement frame 310, making the movement of the displacement frame 310 smoother. On the other hand, it can further close and constrain the closing cover plate 221, ensuring the stable and fixed positioning of the support to be tested by the positioning mechanism 200.

[0102] Reference Figure 10 and Figure 4 The drive assembly 320 in the constant force spring support testing equipment described in this application embodiment includes a servo motor 321 and a variable gear disk 322;

[0103] The servo motor 321 is fixed to one side of the protective housing 100 via a motor mount and is electrically connected to an external control terminal;

[0104] The variable gear 322 is fixed to the output shaft of the servo motor 321 and is connected to the displacement frame 310 for transmission.

[0105] The variable gear disk 322 includes a toothed disk 323, an arc toothed plate 324, and an electric push rod 325;

[0106] The toothed disc 323 is fixed to the output end of the servo motor 321;

[0107] Multiple arc-shaped toothed plates 324 are equidistantly slidably arranged in the toothed disc 323 along a ring and are fixed to the telescopic end of the electric push rod 325;

[0108] Multiple electric push rods 325 are fixed to one side of the toothed disc 323 and electrically connected to an external control terminal.

[0109] The testing equipment for this constant force spring support achieves precise control of the support's tensile process through the drive assembly 320, improving the accuracy and reliability of the test. The servo motor 321 receives control signals from an external control terminal, precisely controlling the motor's speed, direction, and running time, providing a stable and controllable power source for the variable gear disk 322. The output shaft of the servo motor 321 drives the variable gear disk 322 to rotate. The variable gear disk 322 meshes with the half-tooth plate 312 in the displacement frame 310, driving the displacement frame 310 to move, thereby achieving tensile testing of the support. The toothed disc 323 serves as a variable... The basic structure of the measuring gear plate 322 is fixed to the output end of the servo motor 321 and rotates together with the output shaft of the servo motor 321. When it is necessary to adjust the change law of the tensile force, the external control terminal sends a signal to the electric push rod 325. The telescopic end of the electric push rod 325 drives the arc tooth plate 324 to slide in the tooth groove plate 323, changing the meshing position and the number of meshing teeth between the arc tooth plate 324 and the half tooth plate 312, thereby realizing precise control of the movement speed and displacement of the displacement frame 310, and thus precisely adjusting the tensile force and tensile process of the support and hanger, meeting the precise control of the tensile process of the support and hanger under different detection requirements.

[0110] Working principle: First, the protective shell 100 is fixed to the test platform with bolts through the mounting holes at the bottom of the support frame 110. Then, check whether each mechanism component is normal and whether the multi-dimensional sensing system 400 has been calibrated.

[0111] Next, the constant force spring support bracket to be tested is placed in the placement frame 120 of the protective shell 100, and the position of the support bracket is adjusted so that its tension end is aligned with the bolt pin of the displacement frame 310.

[0112] Then, the electric cylinder 240 is activated, driving the toothed column 211 of the top support assembly 210 to move the top pressure plate 212 and the extrusion plate 214 toward the support bracket. At the same time, the top support assembly 210 drives the pressing assembly 220 to move through the gear shaft 231 and the pulley structure 232, closing the cover plate 221 to rotate around the hinge seat 222. The pressing plate 223 drives the rubber pressure roller 224 to press onto the support bracket until the support bracket is tightly fitted to the inner wall of the protective shell 100, completing the positioning.

[0113] Next, the tension end of the support and hanger is fixedly connected to the displacement frame 310 by the bolts and pins on the slide frame 311 of the displacement frame 310 to ensure a firm connection.

[0114] Finally, the servo motor 321 is started through the external control terminal. The servo motor 321 drives the variable gear disk 322 to rotate. The variable gear disk 322 meshes with the half tooth plate 312 to drive the displacement frame 310 to slide along the protective shell 100 and stretch the support. During the stretching process, the multi-dimensional sensing system 400 detects the changes of the support in real time.

[0115] In the description of this invention, it should be understood that the terms "center", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the scope of protection of this invention.

[0116] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A testing device for a constant force spring support, characterized in that, include: Protective housing (100); A positioning mechanism (200), disposed inside the protective housing (100), is used to constrain and limit the constant force spring support bracket of the measured constant force combination. The positioning mechanism (200) includes: The top support assembly (210) is used to push the support bracket to fit tightly against the inner wall of the protective shell (100); The pressing assembly (220) is used to press the support bracket into close contact with the inner wall of the protective shell (100); A transmission assembly (230) is connected between the pressing assembly (220) and the top support assembly (210) to drive the two to work together. An electric cylinder (240) is disposed between the top support assembly (210) and the protective housing (100) for driving the top support assembly (210) to move; A tensioning mechanism (300), disposed inside the protective housing (100), is used to perform elastic tension testing on the limited support bracket. The tensioning mechanism (300) includes: Displacement frame (310), disposed outside the protective shell (100), is used to connect the tension end of the support bracket; A drive assembly (320) is disposed outside the protective housing (100) and is used to drive the displacement frame (310) to move so as to stretch the support.

2. The testing equipment for constant force spring supports according to claim 1, characterized in that: It also includes a multi-dimensional sensing system (400), including: The rangefinder (410) is a laser rangefinder sensor, which is located outside the protective frame (100) and is used to detect the displacement changes of the support under load; A vision sensor (420), a high-speed industrial camera, is located inside the protective housing (100) and is used to capture the deformation process of the spring under dynamic load.

3. The testing equipment for constant force spring supports according to claim 1, characterized in that: The protective housing (100) includes a support frame (110) and a placement frame (120). The bottom of the support frame (110) is provided with multiple mounting holes for fixing to the test platform by bolts; The placement frame (120) has a through window in the middle, and the window is fitted with an organic glass window panel. The double-layered window panel is equipped with a ring-shaped lighting panel.

4. The testing equipment for constant force spring supports according to claim 1, characterized in that: The top support assembly (210) includes a toothed post (211), a top pressure plate (212), a guide post (213), and a compression plate (214). The toothed column (211) is slidably disposed within the protective shell (100) and is fixedly connected to the top pressure plate (212); There are four guide posts (213), which are fixed to the corners of the extrusion plate (214). Each guide post (213) is fitted with a spring and slides in cooperation with the top pressure plate (212).

5. The testing equipment for constant force spring supports according to claim 1, characterized in that: The pressing assembly (220) includes a closing cover plate (221), a hinge seat (222), a pressing plate (223), and a rubber pressure roller (224). One end of the closed cover plate (221) is hinged to the protective shell (100) through a hinge seat (222), and one end of it has a bent structure; The pressing plate (223) is symmetrically staggered and rotatably connected to the rubber pressure roller (224), and a memory metal elastic element is connected between the pressing plate (223) and the hinge seat (222).

6. The testing equipment for constant force spring supports according to claim 5, characterized in that: The surface of the rubber roller (224) is provided with a spiral anti-slip groove, and rubber strips are embedded in the groove.

7. The testing equipment for constant force spring supports according to claim 1, characterized in that: The transmission assembly (230) includes a gear shaft (231) and a pulley structure (232). The gear shaft (231) is rotatably mounted inside the protective housing (100) and is connected to the top support assembly (210) in a transmission manner; The pulley structure (232) includes a pulley and a timing belt, which are symmetrically arranged and drive the gear shaft (231) and the pressing assembly (220).

8. The testing equipment for constant force spring supports according to claim 1, characterized in that: The displacement frame (310) includes a slide frame (311), a half toothed plate (312), and a roller frame (313). The sliding frame (311) is slidably connected to the protective shell (100) and is provided with bolt pins for connecting the tension end of the support bracket; The half-tooth plate (312) is fixedly connected between the slide frame (311) and the roller frame (313), and is connected to the drive assembly (320) for transmission. The roller frame (313) is fixed to one side of the slide frame (311) and can roll into contact with the pressing assembly (220).

9. The testing equipment for constant force spring supports according to claim 1, characterized in that: The drive assembly (320) includes a servo motor (321) and a variable gear disk (322). The servo motor (321) is fixed to one side of the protective housing (100) via a motor mount and is electrically connected to an external control terminal; The variable gear disk (322) is fixed to the output shaft of the servo motor (321) and is connected to the displacement frame (310) for transmission.

10. The testing equipment for constant force spring supports according to claim 9, characterized in that: The variable gear disk (322) includes a toothed disk (323), an arc toothed plate (324), and an electric push rod (325). The toothed disc (323) is fixed to the output end of the servo motor (321); Multiple of the aforementioned arc-tooth plates (324) are equidistantly slidably disposed within the toothed disc (323) along an annular path and are fixed to the telescopic end of the electric push rod (325); Multiple electric push rods (325) are fixed to one side of the toothed disc (323) and electrically connected to an external control terminal.

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