Rod joint strength tester

Abstract

The application discloses a rod joint strength testing machine, which comprises a feeding mechanism, a transplanting mechanism and a rod joint testing mechanism. The feeding mechanism is used for receiving and conveying test rod joints. The transplanting mechanism is used for transferring the test rod joints from the feeding mechanism to the rod joint testing mechanism. The rod joint testing mechanism comprises a fixed side assembly, a movable side assembly which can adjust the left and right positions along the X-axis direction and a pressure rod assembly. The pressure rod assembly comprises an electric cylinder used for providing rod joint test pressure and a pressure sensor assembly. The electric cylinder can move along the X-axis direction. A three-point bending test mode is adopted, which comprises two-point support of the fixed side and the movable side double-support wheel assembly and force of the intermediate pressure rod assembly. The movable side assembly is compensated by X-axis dynamic displacement and is self-adjusted in the Y-axis angle. The support position and the angle are synchronously adjusted when the rod joint is bent and deformed. The strength test of different rigid rod joints in the whole deformation process can be realized, and the strength test deviation caused by support failure can be avoided.

Description

Technical Field

[0001] This utility model belongs to the technical field of fishing rod strength testing equipment, specifically relating to a rod section strength testing machine. Background Technology

[0002] In fishing, the strength of the rod sections is a key factor affecting the rod's performance and safety. With the expanding number of fishing enthusiasts and the professionalization of fishing, the quality requirements for fishing rods are becoming increasingly stringent. If the rod sections are not strong enough, they are prone to breakage during fishing, leading not only to rod damage but also potential safety hazards and injuries. Therefore, strength testing of rod sections is essential. Currently, most commercially available rod section strength testing machines test by bending one or both ends of the section. This method is suitable for sections with low rigidity, such as the rod tip, which can be bent. However, sections with high rigidity and strength cannot be tested by direct bending. For these sections, it is often necessary to assemble them into a complete fishing rod for overall strength testing. Because it is impossible to test the strength of each section individually, substandard sections enter the assembly process, affecting the overall quality of the rod. Therefore, there is an urgent need to develop a strength testing device suitable for various rod sections, especially those with high rigidity and strength. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides a rod section strength testing machine that tests the strength of rod sections by applying pressure in the middle. It can be used for strength testing of rod sections with high rigidity and strength, and is conveniently compatible with rod sections of different lengths. The test data is more reliable and efficient.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0005] A rod section strength testing machine includes a feeding mechanism, a transplanting mechanism, and a rod section testing mechanism. The feeding mechanism receives and transports test rod sections, and the transplanting mechanism transfers the test rod sections from the feeding mechanism to the rod section testing mechanism. The rod section testing mechanism includes a fixed side assembly, a movable side assembly adjustable in the X-axis direction, and a pressure rod assembly. The fixed side assembly includes a fixed-side double support wheel assembly for supporting the test rod sections, which is mounted on a fixed-side base plate via a fixed-side guide assembly rotatable around the Y-axis direction. The movable side assembly includes a movable-side double support wheel assembly for supporting the test rod sections, which is mounted on a sliding connecting plate via a movable-side guide assembly rotatable around the Y-axis direction. The sliding connecting plate is movable in the X-axis direction. The pressure rod assembly includes an electric cylinder for providing test pressure for the rod sections and a pressure sensor assembly. The electric cylinder is movable in the X-axis direction, and its piston rod is connected to the pressure sensor assembly at the bottom.

[0006] Preferably, the moving side assembly further includes a sensing component for controlling the displacement distance of the moving side double support wheel assembly along the X-axis direction. The sensing component includes a top rod connecting plate and a vertical sensing plate connected by a top rod with a variable relative gap. A sensing sensor and a reset spring are provided in the relative gap between the two plates. The vertical sensing plate is located on the outside of the moving side double support wheel assembly and can contact the end of the test rod section. The top rod connecting plate is connected to the piston rod of the top rod cylinder.

[0007] Preferably, the fixed-side double support wheel assembly includes a double bearing roller for supporting the test rod section, the double bearing roller being rotatably connected to the double bearing roller mounting sheet metal via bushings at both ends; the fixed-side guide assembly includes a bearing base mounted on the fixed-side base plate, a linear guide shaft being rotatably mounted on the bearing base via a shaft hole, a guide shaft support being fixedly connected to the linear guide shaft, the guide shaft support being fixedly connected to the top double bearing roller mounting sheet metal, and the linear guide shaft being driven by a rotary cylinder to drive the fixed-side double support wheel assembly to rotate around the Y-axis;

[0008] The movable-side double support wheel assembly includes a double-bearing roller for supporting the test rod section. The double-bearing roller is rotatably connected to the double-bearing roller mounting sheet metal via bushings at both ends. The movable-side guide assembly includes a bearing base mounted on a sliding connecting plate. A linear guide shaft is rotatably mounted on the bearing base via a shaft hole. A guide shaft support is fixedly connected to the linear guide shaft. The guide shaft support is fixedly connected to the double-bearing roller mounting sheet metal at the top. The linear guide shaft is driven by a rotary cylinder to rotate the movable-side double support wheel assembly around the Y-axis.

[0009] The above technical solution allows the test rod section to be supported between the two rollers, providing good support. The linear guide shaft is rotated by a rotary cylinder, and the double bearing roller rotates around the Y-axis along with the linear guide shaft. The Y-axis angle compensation can adapt to the changes in the angle of the rod section end during the deformation process.

[0010] Preferably, the fixed side assembly is provided with a rod section rotation mechanism that can move up and down along the Y-axis. The rod section rotation mechanism includes a motor pressure wheel connected to the Y-axis cylinder via a pressure wheel mounting plate. A transmission bearing is provided on the pressure wheel mounting plate via a wheel axle. When the motor pressure wheel rotates, it is driven by friction with the transmission bearing. When the rod section rotation mechanism moves down, the transmission bearing and the double bearing roller clamp the test rod section and drive it to rotate.

[0011] To ensure the strength of the rod section, it is often necessary to test multiple locations on the surface of the rod section using the above technical solutions. Manually rotating the rod section is very troublesome and the angle and position are difficult to control. This technical solution sets up a rod section rotation mechanism that can move vertically along the Y-axis above the fixed side component. When the rod section rotation mechanism moves downward under the drive of the Y-axis cylinder, the transmission bearing and the fixed side double bearing roller form a clamping and positioning structure, which stably clamps the test rod section between the two. When the motor pressure roller runs, it transmits the rotation through the friction force generated by the contact surface with the transmission bearing, thereby transmitting the rotation to the test rod section, so that it can achieve passive rotation under the action of friction, thus meeting the rotation requirements under the test conditions.

[0012] Preferably, the fixed side base plate is provided with a rod section positioning block, the rod section positioning block includes a positioning cylinder connected to the fixed side base plate, the piston rod of the positioning cylinder is connected to a rod section positioning plate that restricts the position of the rod section end, and the rod section positioning plate can move left and right along the X-axis under the drive of the positioning cylinder.

[0013] With this technical solution, before the test rod section is transferred to the rod section testing mechanism by the transplanting mechanism, the positioning cylinder is controlled to drive the rod section positioning plate to move left and right in the X-axis direction, thereby controlling the position of the rod section end and ensuring that its initial position on the fixed side assembly is uniform and accurate, without affecting subsequent testing.

[0014] Preferably, the transplanting mechanism includes a fixed-side transplanting component and a movable-side transplanting component. Both the fixed-side transplanting component and the movable-side transplanting component include a transplanting block that can move along the Y-axis and Z-axis directions. The transplanting block is provided with a transplanting groove for inserting a test rod section. The fixed-side transplanting component is fixedly connected to the frame, and the movable-side transplanting component is connected to the sliding connecting plate of the movable-side component.

[0015] Preferably, the sliding connecting plate is connected to the moving side synchronous belt mechanism and the moving side guide mechanism respectively. The synchronous belt pulley of the moving side synchronous belt mechanism is connected to the drive motor through a reducer. The synchronous belt is connected to the slider connecting plate through a synchronous belt pressure plate. The slider connecting plate is provided with an X-axis position sensor. The guide mechanism includes two X-axis parallel guide rails on a horizontal plane. The slider on the guide rail is connected to the slider connecting plate.

[0016] Through the above technical solution, the sliding connecting plate and the moving side synchronous belt mechanism are connected by the synchronous belt pressure plate, which can drive the moving side component to move along the X-axis. At the same time, it is equipped with an X-axis position sensor, which can accurately display and adjust the straight distance between the two ends of the test rod section. The guide mechanism is composed of a slider guide rail mechanism, which can ensure the directionality and stability of the movement.

[0017] Preferably, the electric cylinder is fixedly connected to the electric cylinder connecting plate, and the electric cylinder connecting plate is connected to the electric cylinder synchronous belt mechanism and the electric cylinder guide mechanism respectively. The synchronous belt pulley of the moving side synchronous belt mechanism is connected to the drive motor through a reducer, and the synchronous belt is connected to the electric cylinder connecting plate through a synchronous belt pressure plate. An X-axis position sensor indicating the position of the electric cylinder is provided on the frame. The guide mechanism includes two X-axis parallel guide rails on a vertical plane, and the slider on the guide rail is connected to the electric cylinder connecting plate.

[0018] Through the above technical solution, the electric cylinder connecting plate and the electric cylinder synchronous belt mechanism are connected by the synchronous belt pressure plate, which can drive the pressure rod assembly to move along the X-axis. At the same time, it is equipped with an X-axis position sensor, which can accurately display and adjust the position of action on the test rod section. The guide mechanism is composed of a slider guide rail mechanism, which can ensure the directionality and stability of the movement.

[0019] Preferably, the pressure sensor assembly includes a high-precision load cell for indicating test pressure. The high-precision load cell is connected to an electric cylinder at the top via a sensor base plate. The sensing end of the load cell is connected to a sensor connecting plate. The sensor base plate and the sensor connecting plate are movably connected via a linear guide shaft. The bottom of the sensor connecting plate is connected to a silicone plate for protecting the contact surface with the rod section.

[0020] Preferably, a three-level sorting and receiving mechanism is provided in the direction of the discharge port. The three-level sorting and receiving mechanism includes a sorting bin, which is divided into a primary, secondary and tertiary sorting bin along the discharge direction. The top of the primary and secondary sorting bins are respectively equipped with primary and secondary guide plates for guiding the test rod section. Both guide plates are inclined in the direction of the discharge port, and the top of the secondary guide plate is at the same height as the bottom of the primary guide plate, forming a continuously inclined guide surface. The two guide plates are driven by lifting cylinders to realize opening and closing control.

[0021] The above technical solution involves setting up a three-level sorting and receiving mechanism at the discharge port to distinguish between qualified and unqualified products. When the high-precision weighing sensor of the pressure bar assembly displays a value within a predetermined range, the product is considered qualified. The primary and secondary receiving guide plates form a continuously inclined guide surface to guide the qualified product into the tertiary sorting bin. When the value is on either side of the range, products with excessively high test values ​​are considered overly rigid. In this case, the primary guide plate remains stationary, the secondary guide plate is lifted by the lifting cylinder, the top of the secondary sorting bin opens, and the product falls into the secondary sorting bin. Products with excessively low test values ​​are considered overly soft. In this case, the primary guide plate is lifted by the lifting cylinder, the top of the primary sorting bin opens, and the product falls into the primary sorting bin.

[0022] The beneficial effects of this utility model are as follows: 1. It adopts a three-point bending test mode with two-point support from fixed and moving side double support wheel assemblies and force applied by the middle pressure rod assembly. Unlike traditional test methods, the moving side assembly adjusts the support position and angle synchronously when the rod section bends and deforms through X-axis dynamic displacement compensation and Y-axis angle self-adjustment. This enables strength testing of rod sections with different rigidities throughout the entire deformation process, avoiding strength test deviations caused by support failure. 2. The rod section rotation mechanism drives the test rod section to rotate passively through the transmission bearing and the clamping transmission of the double support wheel assembly, replacing manual testing at multiple positions on the surface. 3. The three-level classification and receiving mechanism controls the opening and closing of the guide plate through the lifting cylinder, automatically distinguishing qualified, high-rigidity, and low-rigidity products based on the elastic modulus. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0024] Figure 2 This is a structural schematic diagram of the transplanting mechanism and the pole section testing mechanism of this utility model.

[0025] Figure 3 This is a structural schematic diagram of the fixed-side transplanting component of this utility model.

[0026] Figure 4 This is a schematic diagram of the structure of the mobile side transplanting component of this utility model.

[0027] Figure 5 This is a structural schematic diagram of the fixed-side component of this utility model.

[0028] Figure 6 This is a structural schematic diagram of the mobile side component of this utility model.

[0029] Figure 7 This is a structural schematic diagram of the movable side component of this utility model from another angle.

[0030] Figure 8 This is a side view of the sensing component of this utility model.

[0031] Figure 9 This is a structural schematic diagram of the pressure bar assembly of this utility model.

[0032] Figure 10 This is a side view of the pressure bar assembly of this utility model.

[0033] Figure 11 This is a structural schematic diagram of the fixed side assembly and the rod section rotation mechanism of this utility model.

[0034] Figure 12 This is a schematic diagram of the three-level sorting and receiving mechanism of this utility model.

[0035] Figure 13This is a schematic diagram of the structure of the rod section positioning block of this utility model on the fixed side bottom plate.

[0036] In the diagram: 1-Feeding mechanism; 2-Transplanting mechanism; 201-Transplanting block; 202-Transplanting trough; 203-Sliding cylinder; 204-Slide table base plate; 205-Lifting cylinder; 3-Stick section testing mechanism; 4-Fixed side assembly; 401-Fixed side base plate; 402-Double bearing roller; 403-Double bearing roller mounting sheet metal; 404-Bearing base; 405-Linear guide shaft; 406-Guide shaft support; 407-Rotary cylinder; 5-Moving side assembly; 501 - Sliding connecting plate; 502 - Double bearing roller; 503 - Double bearing roller mounting sheet metal; 504 - Bearing base; 505 - Linear guide shaft; 506 - Guide shaft support; 507 - Rotary cylinder; 508 - Push rod connecting piece; 509 - Vertical sensing piece; 510 - Sensing sensor; 511 - Return spring; 512 - Push rod cylinder; 513 - Synchronous belt pulley; 514 - Drive motor; 515 - Synchronous belt; 516 - Synchronous belt pressure plate; 517 - X-axis position Sensor; 518-Guide rail; 519-Slider; 520-Push rod; 6-Pressure rod assembly; 601-Electric cylinder; 602-Pressure sensor assembly; 603-Electric cylinder connecting plate; 604-Synchronous belt pulley; 605-Drive motor; 606-Synchronous belt; 607-Synchronous belt pressure plate; 608-X-axis position sensor; 609-Guide rail; 610-Slider; 611-Weighing sensor; 612-Sensor base plate; 613-Sensor connecting plate; 614- Linear guide shaft; 615-Silicone plate; 7-Rod section rotation mechanism; 701-Pressure roller mounting plate; 702-Y-axis cylinder; 703-Motor pressure roller; 704-Transmission bearing; 8-Three-level sorting and receiving mechanism; 801-First-level sorting bin; 802-Second-level sorting bin; 803-Third-level sorting bin; 804-First-level guide plate; 805-Second-level guide plate; 806-First-level lifting cylinder; 807-Second-level lifting cylinder; 901-Positioning cylinder; 902-Rod section positioning plate. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0039] like Figure 1 and Figure 2 The rod section strength testing machine shown includes a feeding mechanism 1, a transplanting mechanism 2, and a rod section testing mechanism 3. The feeding mechanism 1 is used to receive and transport the test rod section A. The feeding mechanism in this technical solution is described in publication number CN119413573A, entitled "Feeding Device in Fishing Rod Tip Strength Testing Machine," and will not be elaborated further. The transplanting mechanism is used to transfer the test rod section A from the feeding mechanism 1 to the rod section testing mechanism 3. The rod section testing mechanism includes a fixed side assembly 4, a movable side assembly 5 whose left and right positions can be adjusted along the X-axis, and a pressure rod assembly 6. To facilitate testing the strength of different circumferential positions of the rod section and to facilitate subsequent differentiation of tested products, this embodiment also includes a rod section rotation mechanism 7 and a three-level sorting and receiving mechanism 8.

[0040] The transplanting mechanism includes a fixed-side transplanting component and a movable-side transplanting component, such as... Figure 3 and Figure 4 As shown, both the fixed-side transplanting assembly and the mobile-side transplanting assembly include a transplanting block 201 that can move along the Y-axis and Z-axis directions. The transplanting block 201 is provided with a transplanting groove 202 for inserting a test rod section. The bottom of the transplanting block 201 is connected to a sliding cylinder 203 that can drive it to move back and forth in the Y-axis direction. The sliding cylinder 203 is installed on the slide base plate 204. The slide base plate 204 is connected to a lifting cylinder 205 that can move up and down in the Z-axis direction. The difference is that the fixed-side transplanting assembly is fixedly connected to the frame, and the mobile-side transplanting assembly is connected to the sliding connecting plate 501 of the mobile-side assembly and can move with the sliding connecting plate 501.

[0041] like Figure 5As shown, the fixed-side assembly 4 includes a fixed-side double support wheel assembly for supporting the test rod section. The fixed-side double support wheel assembly is mounted on the fixed-side base plate 401 via a fixed-side guide assembly that can rotate around the Y-axis. The fixed-side double support wheel assembly includes a double-bearing roller 402 for supporting the test rod section. The double-bearing roller is preferably a double-bearing rubber-coated roller. The double-bearing roller is rotatably connected to the double-bearing roller mounting sheet metal 403 via bushings at both ends. The fixed-side guide assembly includes a bearing base 404 mounted on the fixed-side base plate 401. A linear guide shaft 405 is rotatably mounted on the bearing base 404 via a shaft hole. A guide shaft support 406 is fixedly connected to the linear guide shaft 405. The guide shaft support 406 is fixedly connected to the top double-bearing roller mounting sheet metal 403. The linear guide shaft 405 is driven by a rotary cylinder 407 to rotate the fixed-side double support wheel assembly around the Y-axis. This technical solution uses a double-bearing roller 402 to support the test rod section A between the two rollers, providing good support. The linear guide shaft 405 is rotated by a rotary cylinder 407, and the double-bearing roller 402 rotates around the Y-axis with the linear guide shaft 405. The Y-axis angle compensation can adapt to the change in the angle of the end of the rod section A during the deformation process.

[0042] like Figure 6 and Figure 7 As shown, the moving side assembly 5 includes a moving side double support wheel assembly and a sensing component for controlling the displacement distance of the moving side double support wheel assembly along the X-axis. The moving side double support wheel assembly is mounted on a sliding connecting plate 501 via a moving side guide assembly that can rotate around the Y-axis. The sliding connecting plate 501 can move along the X-axis. The moving side double support wheel assembly includes a double bearing roller 502 for supporting the test rod section. The double bearing roller is rotatably connected to the double bearing roller mounting sheet metal 503 via bushings at both ends. The moving side guide assembly includes a bearing base 504 mounted on the sliding connecting plate 501. A linear guide shaft 505 is rotatably mounted on the bearing base 504 via a shaft hole. A guide shaft support 506 is fixedly connected to the linear guide shaft 505. The guide shaft support 506 is fixedly connected to the top double bearing roller mounting sheet metal 503. The linear guide shaft 505 is driven by a rotary cylinder 507 to rotate the moving side double support wheel assembly around the Y-axis. Figure 8 As shown, the sensing assembly includes a top rod connecting piece 508 and a vertical sensing piece 509 connected by a top rod 520 with a variable relative gap. A sensing sensor 510 and a return spring 511 are provided in the relative gap between the two pieces. The vertical sensing piece 509 is located on the outside of the moving side double support wheel assembly and can contact the end of the test rod section A. The top rod connecting piece 508 is connected to the piston rod of the top rod cylinder 512.

[0043] In this technical solution, the sliding connecting plate 501 moves along the X-axis in the following way: the sliding connecting plate 501 is connected to the moving-side synchronous belt mechanism and the moving-side guide mechanism respectively. The synchronous belt pulley 513 of the moving-side synchronous belt mechanism is connected to the drive motor 514 through a reducer. The synchronous belt 515 is connected to the slider connecting plate 501 through the synchronous belt pressure plate 516 and the connecting sheet metal. The slider connecting plate 501 is equipped with an X-axis position sensor 517. The guide mechanism includes two parallel X-axis guide rails 518 on a horizontal plane. The slider 519 on the guide rail is connected to the slider connecting plate 501. Through the above technical solution, the sliding connecting plate 501 and the moving-side synchronous belt mechanism are connected through the synchronous belt pressure plate 516, which can drive the moving-side component to move along the X-axis. At the same time, the X-axis position sensor 517 can accurately display and adjust the straight-line distance between the two ends of the test rod section. The guide mechanism is composed of a slider guide rail mechanism, which can ensure the directionality and stability of the movement.

[0044] like Figure 9 As shown, the pressure rod assembly includes an electric cylinder 601 for providing test pressure on the rod section and a pressure sensor assembly 602. The electric cylinder 601 is movable along the X-axis, and the piston rod of the electric cylinder 601 is connected to the pressure sensor assembly 602 at the bottom. The movement of the electric cylinder 601 along the X-axis is achieved as follows: the electric cylinder 601 is fixedly connected to an electric cylinder connecting plate 603, which is connected to both an electric cylinder synchronous belt mechanism and an electric cylinder guide mechanism. The synchronous belt pulley 604 of the moving side synchronous belt mechanism is connected to a drive motor 605 via a reducer, and the synchronous belt 606 is connected to the electric cylinder connecting plate 603 via a synchronous belt pressure plate 607. An X-axis position sensor 608 indicating the position of the electric cylinder is provided on the frame. The guide mechanism includes two parallel X-axis guide rails 609 in a vertical plane, and a slider 610 on the guide rail is connected to the electric cylinder connecting plate 603. Through the above technical solution, the electric cylinder connecting plate 603 and the electric cylinder 601 synchronous belt mechanism are connected through the synchronous belt pressure plate 607, which can drive the pressure rod assembly to move along the X-axis. At the same time, it is equipped with an X-axis position sensor 608, which can accurately display and adjust the position of action on the test rod section. The guide mechanism is composed of a slider guide rail mechanism, which can ensure the directionality and stability of the movement.

[0045] like Figure 10 As shown, the pressure sensor assembly includes a high-precision load cell 610 for indicating test pressure. The high-precision load cell 610 is connected to the top electric cylinder 601 via a sensor base plate 612. The sensing end of the load cell 611 is connected to a sensor connecting plate 613. The sensor base plate 612 and the sensor connecting plate 613 are movably connected via a linear guide shaft 614. The bottom of the sensor connecting plate 612 is connected to a silicone plate 615 for protecting the contact surface with the rod section.

[0046] To ensure the strength of the pole section, it is often necessary to test multiple locations on the surface of the pole section. Manually rotating the pole section is cumbersome and difficult to control the angle and position. This technical solution achieves strength testing at different circumferential locations of the pole section through the following methods: Figure 11 As shown, a rod section rotation mechanism 7 that can move up and down along the Y-axis is provided above the fixed side assembly. The rod section rotation mechanism includes a motor pressure roller 703 connected to the Y-axis cylinder 702 via a pressure roller mounting plate 701. The motor pressure roller 703 in this technical solution is preferably a polyurethane coated roller, which has a stable friction coefficient, uniform pressure distribution, good fit, high transmission stability, and high precision, and its effect is significantly better than traditional metal rollers or ordinary rubber rollers. A transmission bearing 704 is provided on the pressure roller mounting plate 701 via a wheel axle. The transmission bearing is preferably a rubber coated bearing. When the motor pressure roller 703 rotates, it rubs against the transmission bearing 704. When the rod section rotation mechanism moves down, the transmission bearing 704 and the fixed side double bearing roller 402 clamp the test rod section and drive it to rotate. When the rod section rotation mechanism moves downward under the drive of the Y-axis cylinder 702, the transmission bearing 704 and the fixed-side double bearing roller 402 form a clamping and positioning structure, stably clamping the test rod section A between the two. When the motor pressure roller 703 runs, it forms a transmission relationship with the transmission bearing 704 through the friction pair, thereby transmitting the rotation to the test rod section A, so that it achieves passive rotation under the action of friction, changing the circumferential test point of the rod section, thereby meeting the rotation requirements under the test conditions, and the test position and rotation angle are also more accurate.

[0047] The rod section strength testing machine of this invention can accurately test the strength of rod sections. After testing, to facilitate the differentiation of qualified rod sections, overly stiff sections, and overly soft sections, they are fed into different sorting bins. A three-level sorting and receiving mechanism 8 is set at the discharge port. Figure 12The three-level sorting and receiving mechanism shown includes a sorting bin, which is divided into a primary sorting bin 801, a secondary sorting bin 802, and a tertiary sorting bin 803 along the discharge direction. The top of the primary sorting bin 801 and the secondary sorting bin 802 are respectively equipped with a primary guide plate 804 and a secondary guide plate 805 for guiding the test rod section. Both guide plates are inclined along the discharge direction, and the top of the secondary guide plate 805 is at the same height as the bottom of the primary guide plate 804, forming a continuously inclined guide surface. The two guide plates are opened and closed by a primary lifting cylinder 806 and a secondary lifting cylinder 807, respectively. According to the above technical solution, when the product is qualified, the first-stage lifting cylinder 806 and the second-stage lifting cylinder 807 remain stationary, and the first-stage guide plate 804 and the second-stage guide plate 805 form a continuously inclined guide surface to guide the qualified product into the third-stage material distribution bin 803. When the product is too hard, the first-stage guide plate 804 remains stationary, the second-stage guide plate 805 is lifted by the second-stage lifting cylinder 807, the top of the second-stage material distribution bin 802 opens, and the product falls into the second-stage material distribution bin 802. When the product is too soft, the first-stage guide plate 804 is lifted by the first-stage lifting cylinder 806, the top of the first-stage material distribution bin 801 opens, and the product falls into the first-stage material distribution bin.

[0048] To control the position of the rod section end before testing and ensure its initial position on the fixed side assembly is uniform and accurate, the fixed side base plate of this technical solution is provided with a rod section positioning block. The rod section positioning block includes a positioning cylinder 901 connected to the fixed side base plate. The piston rod of the positioning cylinder is connected to a rod section positioning plate 902 that restricts the position of the rod section end. The rod section positioning plate 902 can move left and right along the X-axis under the drive of the positioning cylinder 901. In use, the positioning cylinder 901 is controlled to drive the rod section positioning plate 902 to move left and right in the X-axis direction, thereby aligning the position of the rod section end.

[0049] This technical solution achieves accurate testing of rod section strength through the following design:

[0050] 1. The test rod section is accurately transferred through a modular operation process. The test rod section is conveyed to the transplanting mechanism 2 via the feeding mechanism 1, and then transferred between the fixed side component 4 and the moving side component 5 by the transplanting mechanism 2. The moving side component 4 achieves X-axis displacement through the sliding connecting plate 501, and the spacing can be pre-adjusted to adapt to rod sections of different lengths.

[0051] 2. Precise positioning of the test rod section is achieved through dynamic adaptive adjustment, with X-axis displacement compensation: The moving side component 5 integrates a sensing component. When the test rod section is inserted, the vertical sensing plate 509 and the sensing sensor 510 form a pre-tight contact. When the electric cylinder 601 of the pressure rod component moves along the X-axis to the test position and applies pressure, the rod section A bends, and the straight distance between the two ends of the rod section A shortens. The contact pressure between the vertical sensing plate 509 and the sensing sensor 510 gradually decreases. Under the action of the return spring 511, the vertical sensing plate 509 and the sensing sensor 510 tend to separate, triggering the sensing component to control the drive motor 514 to start. The sliding connecting plate 501 drives the moving side double support wheel assembly to move along the X-axis, reducing the distance between it and the fixed side double support wheel assembly. The top rod cylinder 512 starts, causing the sensing sensor 510 and the vertical sensing plate 509 to form a pre-tight contact again, completing one adjustment feedback. During the test, the sensing component continuously controls and dynamically adjusts the position of the moving side component to ensure that rod section A does not detach from the test mechanism; Y-axis angle self-adjustment: both the fixed side and the moving side double support wheel components are equipped with Y-axis rotary pairs. After detecting a decrease in contact pressure, the rotary cylinders 407 and 507 are activated to automatically adjust the angle to fit with the end of the rod section, ensuring the stability of the rod section and the accuracy of the test.

[0052] 3. The pressure test is performed by the pressure rod assembly. The electric cylinder 601 provides pressure, and the pressure sensor assembly provides feedback on the test pressure. During the test, a preset pressing distance is set for different rod sections. After the pressure rod assembly contacts the rod body, the load cell 611 senses the test pressure and starts to execute the preset pressing distance. After the preset distance is reached, the value sensed by the load cell is read. If it is within the range, it is qualified; otherwise, it is unqualified.

Claims

1. A rod section strength testing machine, characterized in that: The device includes a feeding mechanism, a transplanting mechanism, and a rod section testing mechanism. The feeding mechanism receives and transports test rod sections. The transplanting mechanism transfers test rod sections from the feeding mechanism to the rod section testing mechanism. The rod section testing mechanism includes a fixed-side assembly, a movable-side assembly adjustable in the X-axis direction, and a pressure rod assembly. The fixed-side assembly includes a fixed-side double support wheel assembly for supporting the test rod sections, which is mounted on a fixed-side base plate via a fixed-side guide assembly rotatable around the Y-axis direction. The movable-side assembly includes a movable-side double support wheel assembly for supporting the test rod sections, which is mounted on a sliding connecting plate via a movable-side guide assembly rotatable around the Y-axis direction. The sliding connecting plate is movable in the X-axis direction. The pressure rod assembly includes an electric cylinder and a pressure sensor assembly for providing rod section testing pressure. The electric cylinder is movable in the X-axis direction, and its piston rod is connected to the pressure sensor assembly at the bottom.

2. The rod section strength testing machine according to claim 1, characterized in that: The moving side assembly also includes a sensing component for controlling the displacement distance of the moving side double support wheel assembly along the X-axis. The sensing component includes a top rod connecting plate and a vertical sensing plate connected by a top rod with a variable relative gap. A sensing sensor and a return spring are provided in the relative gap between the two plates. The vertical sensing plate is located on the outside of the moving side double support wheel assembly and can contact the end of the test rod section. The top rod connecting plate is connected to the piston rod of the top rod cylinder.

3. The pole section strength testing machine according to claim 1, characterized in that: The fixed-side double support wheel assembly includes a double bearing roller for supporting the test rod section. The double bearing roller is rotatably connected to the double bearing roller mounting sheet metal via bushings at both ends. The fixed-side guide assembly includes a bearing base mounted on the fixed-side base plate. A linear guide shaft is rotatably mounted on the bearing base via a shaft hole. A guide shaft support is fixedly connected to the linear guide shaft. The guide shaft support is fixedly connected to the double bearing roller mounting sheet metal at the top. The linear guide shaft is driven by a rotary cylinder to rotate the fixed-side double support wheel assembly around the Y-axis. The movable-side double support wheel assembly includes a double-bearing roller for supporting the test rod section. The double-bearing roller is rotatably connected to the double-bearing roller mounting sheet metal via bushings at both ends. The movable-side guide assembly includes a bearing base mounted on a sliding connecting plate. A linear guide shaft is rotatably mounted on the bearing base via a shaft hole. A guide shaft support is fixedly connected to the linear guide shaft. The guide shaft support is fixedly connected to the double-bearing roller mounting sheet metal at the top. The linear guide shaft is driven by a rotary cylinder to rotate the movable-side double support wheel assembly around the Y-axis.

4. The pole section strength testing machine according to claim 1, characterized in that: Above the fixed side assembly is a rod section rotation mechanism that can move up and down along the Y-axis. The rod section rotation mechanism includes a motor pressure wheel connected to the Y-axis cylinder via a pressure wheel mounting plate. A transmission bearing is provided on the pressure wheel mounting plate via a wheel axle. When the motor pressure wheel rotates, it rubs against the transmission bearing. When the rod section rotation mechanism moves down, the transmission bearing and the fixed side double support wheel assembly clamp the test rod section and drive it to rotate.

5. The pole section strength testing machine according to claim 1, characterized in that: The fixed side base plate is provided with a rod section positioning block. The rod section positioning block includes a positioning cylinder connected to the fixed side base plate. The piston rod of the positioning cylinder is connected to a rod section positioning plate that limits the position of the end of the rod section. The rod section positioning plate can move left and right along the X-axis under the drive of the positioning cylinder.

6. The pole section strength testing machine according to claim 1, characterized in that: The transplanting mechanism includes a fixed-side transplanting assembly and a movable-side transplanting assembly. Both the fixed-side transplanting assembly and the movable-side transplanting assembly include a transplanting block that can move along the Y-axis and Z-axis directions. The transplanting block is provided with a transplanting groove for inserting a test rod section. The fixed-side transplanting assembly is fixedly connected to the frame, and the movable-side transplanting assembly is connected to the sliding connecting plate of the movable-side assembly.

7. The pole section strength testing machine according to claim 1, characterized in that: The sliding connecting plate is connected to the moving side synchronous belt mechanism and the moving side guide mechanism respectively. The synchronous belt pulley of the moving side synchronous belt mechanism is connected to the drive motor through a reducer. The synchronous belt is connected to the slider connecting plate through a synchronous belt pressure plate. The slider connecting plate is equipped with an X-axis position sensor. The guide mechanism includes two X-axis parallel guide rails on a horizontal plane. The slider on the guide rail is connected to the slider connecting plate.

8. The pole section strength testing machine according to claim 1, characterized in that: The pressure sensor assembly includes a high-precision load cell for indicating test pressure. The high-precision load cell is connected to an electric cylinder at the top via a sensor base plate. The sensing end of the load cell is connected to a sensor connecting plate. The sensor base plate and the sensor connecting plate are movably connected via a linear guide shaft. The bottom of the sensor connecting plate is connected to a silicone plate for protecting the contact surface of the rod section.

9. The pole section strength testing machine according to claim 1, characterized in that: A three-level sorting and receiving mechanism is set in the direction of the discharge port. The three-level sorting and receiving mechanism includes a sorting bin, which is divided into a primary, secondary and tertiary sorting bin along the discharge direction. The top of the primary and secondary sorting bins are respectively equipped with primary and secondary receiving guide plates for guiding the test rod section. Both guide plates are inclined in the direction of the discharge port, and the top of the secondary receiving guide plate is at the same height as the bottom of the primary receiving guide plate, forming a continuously inclined guide surface. The two guide plates are driven by lifting cylinders to realize opening and closing control.

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