Spring energy storage module detection device

Abstract

The utility model discloses a kind of spring energy storage module detection devices, including installation base, drive motor, transmission mechanism, motor control module and module fixed detection site;Drive motor is fixedly installed on installation base, and motor control module is electrically connected between drive motor by cable;The output shaft of drive motor is driven to be connected through transmission mechanism with the spring tightening structure drive of the spring energy storage module on module fixed detection site;Its characterized in that: the output shaft of drive motor is vertically upwards;Transmission mechanism includes one-way bearing and the driving gear and driven gear that can be engaged by outer tooth, and driving gear is coaxially fixedly connected with output shaft;One-way bearing is coaxially fixedly installed in the mounting hole at the center of driven gear;One-way bearing is used for detachable sleeve fixed connection on the spring tightening drive shaft of spring energy storage module, and the lock dead direction of one-way bearing is used for driving spring tightening.

Description

Technical Field

[0001] This utility model belongs to the field of clockwork energy storage modules, and specifically relates to a clockwork energy storage module testing device. Background Technology

[0002] A spring-loaded energy storage module (or simply spring) is a power device that utilizes the elasticity of a highly elastic steel bar to absorb and store mechanical energy, which can then be released and output as mechanical energy. Spring-loaded energy storage modules are widely used in toys, mechanical clocks, and other devices requiring physical energy storage.

[0003] The prior art, disclosed in publication number CN206496968U, discloses a spring fatigue tester, including a fixing device, an electrical control mechanism, a transmission mechanism, and a clamping mechanism. The electrical control mechanism controls the operation of the transmission mechanism, which cooperates with the clamping mechanism. The fixing device is used to fix and support other components. The electrical control mechanism is used to drive the speed, direction of rotation, and number of rotations of the transmission mechanism. The clamping mechanism is used to fix the spring barrel and uses the transmission mechanism and clamping mechanism to tighten and loosen the spring in the spring barrel, simulating the fatigue process.

[0004] However, the technical solution of CN206496968U still has the following shortcomings:

[0005] The overall structure is quite complex, with many exposed components, occupying a large space. Furthermore, the technical solution requires the mainspring to be installed in the clamping mechanism before the electrical control mechanism can be activated for testing. Considering the structure of the clamping mechanism, both installing and removing the mainspring require manual intervention to overcome the spring's elasticity, making the installation and removal of the mainspring quite laborious. In addition, the transmission mechanism uses forward and reverse rotation to tighten and loosen the mainspring, simulating the fatigue process. However, in reality, only the tightening process (energy storage process) requires external force; the loosening process (releasing elastic potential energy) is difficult to naturally simulate through the reverse rotation of the transmission mechanism.

[0006] Furthermore, the prior art, disclosed in publication number CN223091520U, also discloses a spring life testing machine including a frame, on which a spring box is fixedly connected by several mounting columns. A servo motor and a reducer are fixedly installed on one side of the top of the frame. The output end of the servo motor is connected to the input end of the reducer. A coupling is fixedly installed on the output end of the reducer, and a rotating shaft is fixedly connected to the output end of the coupling. The spring is placed inside the spring box, and the hook on the outside of the spring is fixedly connected to the outer wall of the spring box, while the hook on the inside of the spring is fixedly connected to the rotating shaft. In the technical solution provided by this utility model, the automatic operation of spring tightening and loosening is realized through the transmission system composed of a servo motor, a reducer, and a coupling.

[0007] However, the aforementioned CN223091520U still has the following shortcomings:

[0008] It is only suitable for testing the spring (i.e., high-elasticity steel bar) in the spring energy storage module individually, and it is difficult to test the overall quality reliability or durability of the spring energy storage module.

[0009] Based on this, the applicant is considering designing a clockwork energy storage module testing device with a simpler appearance, a more compact structure, and a more convenient installation and removal process. Summary of the Invention

[0010] In view of the shortcomings of the prior art, the technical problem to be solved by this utility model is:

[0011] How to provide a testing device for spring-loaded energy storage modules that has a simpler appearance, a more compact structure, and is easier to install and remove?

[0012] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0013] A spring-loaded energy storage module testing device includes a mounting base, a drive motor, a transmission mechanism, a motor control module, and a module fixed testing position; the drive motor is fixedly mounted on the mounting base, and the motor control module is electrically connected to the drive motor via a cable; the output shaft of the drive motor is driven and connected to the spring-loaded energy storage module's spring-loaded tightening structure on the module fixed testing position via the transmission mechanism; characterized in that:

[0014] The output shaft of the drive motor is vertically upward;

[0015] The transmission mechanism includes a one-way bearing and a driving gear and a driven gear that can mesh with external teeth. The driving gear is coaxially and fixedly connected to the output shaft. The one-way bearing is coaxially and fixedly installed in the mounting hole at the center of the driven gear. The one-way bearing is used to be detachably and fixedly connected to the spring tightening drive shaft of the spring energy storage module, and the locking direction of the one-way bearing is used to drive the spring to tighten.

[0016] Compared with existing technologies, the advantages of this utility model's clockwork energy storage module testing device are:

[0017] 1. The overall shape is simpler and the structure is more compact.

[0018] The transmission mechanism in this technical solution consists of only three components: a one-way bearing, a driving gear, and a driven gear. This simplifies the overall structure of the detection device and makes the overall structure more compact.

[0019] 2. The process of fixing and removing the clockwork energy storage module is convenient; the energy release process is realistic, and the test results are better.

[0020] This technical solution utilizes a one-way bearing with locked rotation to drive the mainspring to tighten, while the other rotation allows the mainspring to release energy naturally. Therefore, before testing, simply mount the driven gear with the one-way bearing onto the mainspring tightening drive shaft of the mainspring energy storage module. Then, place the mainspring energy storage module in the module fixed testing position, ensuring the driving and driven gears are in external gear meshing. Subsequently, the output shaft of the drive motor rotates in the locked rotation direction of the one-way bearing to tighten the mainspring. After the drive motor stops rotating, the mainspring energy storage module releases energy under the elastic potential energy stored in its internal high-elasticity steel bar. Repeating this rotation and stopping process of the drive motor continuously tests the mainspring's energy storage and natural energy release processes, thus completing the fatigue-level durability and reliability test of the mainspring energy storage module.

[0021] 3. A spring-loaded energy storage module suitable for winding clockwise or counterclockwise.

[0022] Because the driven gear equipped with a one-way bearing is detachably and fixedly mounted on the spring tightening drive shaft of the spring energy storage module, the locked direction of the one-way bearing can be aligned with the spring tightening drive direction by flipping the driven gear. Combined with the fact that the drive motor can rotate forward and backward, this solution can also be applied to the durability and reliability testing of spring energy storage modules that tighten the spring clockwise or counterclockwise, thus improving the applicability and practicality.

[0023] 4. The detection process is more intuitive and easily recorded by the human eye or a camera.

[0024] Because the fixed orientation of the drive motor is with the output shaft facing vertically upwards, the driving gear is fixed on the output shaft and exposed; at the same time, because the driving gear needs to mesh with the driven gear, the driven gear is also exposed like the driving gear.

[0025] Therefore, the process of winding and unwinding the spring of the spring energy storage module is easier to observe intuitively or can be recorded by a camera (video recording is convenient for machine vision and artificial intelligence to achieve automatic recording or reminders, helping to improve the automation and intelligence of the detection process). Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of the first embodiment of the clockwork energy storage module testing device of this utility model.

[0027] Figure 2 for Figure 1 Enlarged view of a part

[0028] Figure 3This is a structural diagram of the spring-loaded energy storage module, driven gear, and one-way bearing.

[0029] Figure 4 This is a pin diagram of the MCU (Microcontroller Unit) of the main control circuit of the motor control module in the clockwork energy storage module testing device of this utility model.

[0030] Figure 5 for Figure 4 A schematic diagram showing the electrical connection of relevant pins in the MCU to various expansion headers.

[0031] Figure 6 This is a wiring diagram of the motor forward and reverse drive circuit of the motor control module in the spring energy storage module testing device of this utility model.

[0032] Figure 7 This is a circuit diagram of the relay drive circuit portion of the motor forward and reverse rotation drive circuit in the clockwork energy storage module testing device of this utility model.

[0033] Figure 8 This is a wiring diagram of the double-pole double-throw switch section in the motor forward and reverse drive circuit of the motor control module in the spring-loaded energy storage module testing device of this utility model.

[0034] The diagram is marked as follows:

[0035] 1. Outer shell: 10 high-step surface, 11 low-step surface, 12 module insertion slots;

[0036] 2. Output shaft of drive motor

[0037] 3. Drive gear;

[0038] 4-spring energy storage module: 40 spring-driven drive shaft, 41 driven gear, 42 one-way bearing;

[0039] 5. Double-pole double-throw switch. Detailed Implementation

[0040] The present invention will now be described in further detail with reference to the accompanying drawings.

[0041] The first embodiment is shown below. Figures 1 to 8 As shown:

[0042] A spring-loaded energy storage module testing device includes a mounting base, a drive motor, a transmission mechanism, a motor control module, and a module fixed testing position. The drive motor is fixedly mounted on the mounting base, and the motor control module is electrically connected to the drive motor via a cable. The output shaft of the drive motor is driven and connected to the spring-loaded tightening structure of the spring-loaded energy storage module at the module fixed testing position through the transmission mechanism.

[0043] The output shaft of the drive motor is vertically upward;

[0044] The transmission mechanism includes a one-way bearing and a driving gear and a driven gear that can mesh with external teeth. The driving gear is coaxially and fixedly connected to the output shaft. The one-way bearing is coaxially and fixedly installed in the mounting hole at the center of the driven gear. The one-way bearing is used to be detachably and fixedly connected to the spring tightening drive shaft of the spring energy storage module, and the locking direction of the one-way bearing is used to drive the spring to tighten.

[0045] The clockwork energy storage module testing device also includes a housing, the upper surface of which has a two-stage stepped structure, wherein:

[0046] The bottom of the inner shell below the high step surface forms the mounting base and the drive motor is fixed thereon, and the output shaft of the drive motor passes through the high step surface;

[0047] The low-step platform is provided with a module fixing detection position for the insertion and fixing of the spring energy storage module.

[0048] The two-stage stepped structure of the outer shell can be designed and manufactured by utilizing the height difference between the two stages, and can more easily meet the testing requirements of spring-loaded energy storage modules of different heights, thus having better scalability.

[0049] In addition, the above-mentioned outer shell has a simple structure and is easy to process; in practice, it is preferable to make the outer shell from engineering plastic material.

[0050] The outer shell is a long strip-shaped structure extending along the width direction of the stepped surface, and 10 fixed detection positions of the module are arranged at intervals along the length direction.

[0051] The motor control module includes a main control circuit, which includes an STM32F series MCU. The MCU includes GPIO, ADC, UART, and I / O pins. 2 Each pin of the C, SPI, and PWM functional interfaces constitutes a relay control pin and is connected to external power via an extension header.

[0052] The advantages of this structure are that it can fully utilize the I / O pins of various functional interfaces on a single MCU (microcontroller) to control up to 10 pairs of relays (which are then used to control the on / off state of the motor's forward and reverse rotation circuit), thereby simplifying the circuit structure and reducing the hardware, manufacturing, and testing costs of the detection device. It also reduces the deployment difficulty of simultaneously detecting multiple modules at fixed detection positions and improves the efficiency of simultaneously detecting spring-loaded energy storage modules.

[0053] When implementing, see Figure 4 and Figure 5As shown, the hardware I / O pins of the STM32F series MCU are defined, and the pins are brought out for external power connection through the J3, J4, J5, J6, J7, and J8 expansion pins.

[0054] See Figure 6 As shown, the motor control module includes motor forward and reverse rotation drive circuits corresponding one-to-one with each individual drive motor. Each motor forward and reverse rotation drive circuit includes two single-pole double-throw relays, a positive power supply circuit for the motor, and a negative power supply circuit for the motor. The common terminals of the two single-pole double-throw relays together constitute the positive and negative terminals of the drive power supply for the drive motor. The two single-pole double-throw relays are designated as the first relay and the second relay, respectively.

[0055] The normally closed terminal of the first relay is electrically connected to the positive circuit of the motor power supply, and the normally open terminal of the first relay is electrically connected to the negative circuit of the motor power supply.

[0056] The normally closed terminal of the second relay is electrically connected to the negative circuit of the motor power supply, and the normally open terminal of the second relay is electrically connected to the positive circuit of the motor power supply.

[0057] The abbreviation for a single-pole double-throw relay is Relay-SPDT. During implementation, the power supply is a 24V DC drive power supply. The positive circuit of the motor power supply is electrically connected to the positive terminal of the 24V DC drive power supply; the negative circuit of the motor power supply is electrically connected to the negative terminal of the 24V DC drive power supply.

[0058] With the above scheme, the common terminal and normally closed terminal of two single-pole double-throw relays can be used to form a positive drive circuit (e.g., to make the output shaft of the drive motor rotate clockwise); or the positive and negative poles of the power supply can be reversed by controlling the operation of the two single-pole double-throw relays to make the normally closed terminal open and the normally open terminal close, thereby forming a reverse drive circuit (e.g., to make the output shaft of the drive motor rotate counterclockwise).

[0059] The advantages of the above motor forward and reverse drive circuit are:

[0060] The circuit structure is simple, requiring no complex H-bridge circuits or dedicated motor driver chips, making it easy to implement and more cost-effective.

[0061] The two relays themselves provide good electrical isolation, separating the control terminal (low-voltage control signal) from the high-power circuit of the motor, thus enhancing the system's anti-interference and safety.

[0062] The coordinated operation of the two relays ensures correct switching of the motor's power supply polarity. The cross-design of normally closed and normally open terminals ensures that the positive and negative terminals of the power supply are not directly short-circuited during the switching process, thereby improving circuit safety and relay lifespan.

[0063] See Figure 7As shown, the motor forward and reverse drive circuit also includes a single relay drive circuit corresponding to each individual relay. The single relay drive circuit includes an optocoupler, a pull-up resistor, and a diode.

[0064] Pin 1 of the optocoupler is the anode of the light-emitting diode and is connected in series with a pull-up resistor and then electrically connected to VCC.

[0065] Pin 2 of the optocoupler is the cathode of the light-emitting diode and is connected in series with the anode of the diode. The cathode of the diode is then electrically connected to the control pin.

[0066] Pin 3 of the optocoupler is the emitter of a transistor and is used to electrically connect to the control coil of a single-pole double-throw relay.

[0067] Pin 3 of the optocoupler is the collector of the transistor and is electrically connected to the drive power supply of the control coil.

[0068] The above single relay drive circuit has the following advantages:

[0069] 1. Using optocouplers for isolation achieves electrical isolation between the MCU control terminal and the relay coil control terminal, avoiding damage to the MCU caused by motor back electromotive force, spike interference, power surge, etc., and can better protect the control circuit.

[0070] 2. Setting a pull-up resistor ensures that the anode of the LED is stably at a high level, avoiding false triggering and improving the reliability of operation.

[0071] 3. Connecting the diode in series at the input of the optocoupler can prevent reverse connection of the control signal or reverse interference voltage from entering the optocoupler, thus enhancing anti-interference capability.

[0072] 4. Components are easy to procure and have low costs, which can effectively reduce manufacturing costs and improve the overall efficiency of testing.

[0073] See Figure 8 As shown, the motor forward and reverse drive circuit also includes a double-pole double-throw switch, which has two sets of ports:

[0074] In the first group of ports: the common terminal is used to electrically connect to the input pins on the MCU, the normally closed terminal is grounded, and the normally open terminal is electrically connected to the microcontroller signal power supply.

[0075] In the second set of ports: the common terminal and the normally open terminal are connected in series in the positive circuit of the motor power supply, and the normally closed terminal is unconnected.

[0076] After adopting the above solution, removing the double-pole double-throw switch (SW DPDT) connects the common terminal and normally open terminal in the first set of ports, and the voltage level is sent to the corresponding GPIO of the MCU, allowing the MCU to detect that the button has been pressed. Simultaneously, connecting the common terminal and normally open terminal in the second set of ports connects the positive terminal of the motor power supply, thus driving the motor to operate.

[0077] Therefore, by adopting the above scheme, it is possible to simultaneously achieve the dual functions of manually controlling the motor to start and stop, and MCU (remote or local) detecting the motor to start and stop.

[0078] Both the driving gear and the driven gear are made of the same non-metallic wear-resistant material, and the driving gear and the driven gear have the same thickness of 10-15mm.

[0079] In practice, the non-metallic wear-resistant materials used to manufacture the driving gear and driven gear are existing technologies. Specifically, any one of polyoxymethylene, nylon, polycarbonate or polyetheretherketone can be used as the matrix, and graphite or polytetrafluoroethylene is used as a modifier to reduce the coefficient of friction and improve wear resistance.

[0080] The advantages of using the above driving gear and driven gear are:

[0081] 1. The increased gear thickness corresponds to a larger meshing contact area, reducing the stress on a single tooth and effectively preventing tooth breakage or wear. This better ensures the reliability of the gears for long-term use.

[0082] 2. The force distribution during meshing is more balanced, reducing vibration and impact, ensuring the reliability of the meshing connection, and reducing operating noise.

[0083] 3. Since the master and slave gears have the same thickness and are made of the same material, the same machining process can be used, reducing processing complexity and cost. During assembly, alignment and center distance are easier to maintain, reducing offset caused by thickness differences. Furthermore, mass production is easier, with a high degree of standardization, facilitating maintenance and replacement.

[0084] The module fixed detection position is provided with a module insertion slot for the lower part of the spring energy storage module to be inserted and fixed.

[0085] This plug-in mounting method makes assembly and disassembly more convenient and efficient, which can help improve the durability testing efficiency of the spring-loaded energy storage module.

[0086] The second embodiment is not shown in the figure:

[0087] The difference between this embodiment and the first embodiment is that:

[0088] The outer casing has 2-10 fixed detection positions for the modules spaced apart along its length. The fixed detection positions for each module are assembled together, and a through hole for cables to pass through is provided between the connecting surfaces of two adjacent fixed detection positions for the modules.

[0089] The above are merely preferred embodiments of this utility model. It should be noted that any modifications and improvements made by those skilled in the art without departing from this technical solution should also be considered to fall within the scope of protection claimed in this claim.

Claims

1. A spring-loaded energy storage module testing device, comprising a mounting base, a drive motor, a transmission mechanism, a motor control module, and a module fixed testing position; the drive motor is fixedly mounted on the mounting base, and the motor control module is electrically connected to the drive motor via a cable; the output shaft of the drive motor is driven and connected to the spring-loaded tightening structure of the spring-loaded energy storage module on the module fixed testing position via the transmission mechanism; characterized in that: The output shaft of the drive motor is vertically upward; The transmission mechanism includes a one-way bearing and a driving gear and a driven gear that can mesh with external teeth. The driving gear is coaxially and fixedly connected to the output shaft. The one-way bearing is coaxially and fixedly installed in the mounting hole at the center of the driven gear. The one-way bearing is used to be detachably and fixedly connected to the spring tightening drive shaft of the spring energy storage module, and the locking direction of the one-way bearing is used to drive the spring to tighten.

2. The spring-loaded energy storage module detection device according to claim 1, characterized in that: It also includes a housing, the upper surface of which has a two-stage stepped structure, wherein: The bottom of the inner shell below the high step surface forms the mounting base and the drive motor is fixed thereon, and the output shaft of the drive motor passes through the high step surface; The low-step platform is provided with a module fixing detection position for the insertion and fixing of the spring energy storage module.

3. The spring-loaded energy storage module detection device according to claim 2, characterized in that: The outer shell is a long strip structure extending along the width direction of the stepped surface, and 2-10 fixed detection positions of the module are arranged at intervals along the length direction; The motor control module includes a main control circuit, which includes an STM32F series MCU. The MCU includes GPIO, ADC, UART, and I / O pins. 2 Each pin of the C, SPI, and PWM functional interfaces constitutes a relay control pin and is connected to external power via an extension header.

4. The spring-loaded energy storage module detection device according to claim 3, characterized in that: The motor control module includes a motor forward and reverse rotation drive circuit corresponding to each individual drive motor. The motor forward and reverse rotation drive circuit includes two single-pole double-throw relays, a positive power supply circuit for the motor, and a negative power supply circuit for the motor. The common terminals of the two single-pole double-throw relays together constitute the positive and negative terminals of the drive power supply for the drive motor. The two single-pole double-throw relays are designated as a first relay and a second relay, respectively. The normally closed terminal of the first relay is electrically connected to the positive circuit of the motor power supply, and the normally open terminal of the first relay is electrically connected to the negative circuit of the motor power supply. The normally closed terminal of the second relay is electrically connected to the negative circuit of the motor power supply, and the normally open terminal of the second relay is electrically connected to the positive circuit of the motor power supply.

5. The spring-loaded energy storage module detection device according to claim 4, characterized in that: The motor forward and reverse rotation drive circuit also includes a single relay drive circuit corresponding to each individual relay. The single relay drive circuit includes an optocoupler, a pull-up resistor, and a diode. Pin 1 of the optocoupler is the anode of the light-emitting diode and is connected in series with a pull-up resistor and then electrically connected to VCC. Pin 2 of the optocoupler is the cathode of the light-emitting diode and is connected in series with the anode of the diode. The cathode of the diode is then electrically connected to the control pin. Pin 3 of the optocoupler is the emitter of a transistor and is used to electrically connect to the control coil of a single-pole double-throw relay. Pin 3 of the optocoupler is the collector of the transistor and is electrically connected to the drive power supply of the control coil.

6. The spring-loaded energy storage module detection device according to claim 4, characterized in that: The motor forward and reverse drive circuit also includes a double-pole double-throw switch, which has two sets of ports: In the first group of ports: the common terminal is used to electrically connect to the input pins on the MCU, the normally closed terminal is grounded, and the normally open terminal is electrically connected to the microcontroller signal power supply. In the second set of ports: the common terminal and the normally open terminal are connected in series in the positive circuit of the motor power supply, and the normally closed terminal is unconnected.

7. The detection device for a spring-loaded energy storage module according to any one of claims 1 to 6, characterized in that: Both the driving gear and the driven gear are made of the same non-metallic wear-resistant material, and the driving gear and the driven gear have the same thickness of 10-15mm.

8. The detection device for a spring-loaded energy storage module according to any one of claims 1 to 6, characterized in that: The module fixed detection position is provided with a module insertion slot for the lower part of the spring energy storage module to be inserted and fixed.

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