Chain structure tension detection platform

Abstract

The utility model relates to chain mechanical property detection equipment technical field discloses a chain structure tension detection platform, including the base, the one side fixed setting of base is provided with fixed clamping seat, the upper portion of base is provided with the sliding base that can slide along its length direction, be provided with control assembly, driving motor and movable clamping seat on the sliding base, movable clamping seat can slide along the length direction of sliding base, the output of driving motor is connected with screw rod drive mechanism, when using this device, the sliding base bottom L type guide rail that is set up cooperates with base L type guide groove, can slide steadily, operating personnel rotates the adjusting hand wheel, drives the rotation of adjusting screw rod, with the cooperation of its and the thread of base, converts into sliding base linear displacement, and the distance of quick adjustment and fixed clamping seat, does not need to disassemble and change the clamp of adjusting, and the spacing of limiting baffle circle is anticollision, and the size chain is adapted, and the universality is promoted, and cost and time loss are reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of chain mechanical performance testing equipment, specifically a chain-type tensile testing table. Background Technology

[0002] In industrial production, chains are crucial transmission components, and their mechanical performance testing is essential for the safe operation of equipment. Currently, most chain tensile testing equipment on the market is based on modifications of traditional universal tensile testing machines. It primarily applies tensile force to the chain using wedge clamps and bolt-fastened clamping structures to test parameters such as tensile strength and breaking load. These machines are widely used in the production of chains for bicycles, automobiles, and industrial conveyors. These devices typically employ a dual-space gantry structure, relying on the lifting and lowering of a crossbeam to adjust the testing space, and using a servo motor to drive a ball screw for loading.

[0003] However, existing equipment suffers from poor adaptability. Traditional equipment has a fixed clamp spacing, requiring the disassembly and replacement of corresponding clamps to test chains of different lengths. This operation is cumbersome and time-consuming, severely impacting testing efficiency and failing to meet the rapid testing needs of chains of various specifications. In terms of clamping structure, existing equipment mostly adopts a jaw-type or bolt-locking design. Operators need to repeatedly adjust the jaw position and tighten the bolts, which not only prolongs preparation time but also easily leads to deviations in the direction of tension due to clamping errors, affecting testing accuracy.

[0004] To address the aforementioned issues, this application proposes a chain-structure tensile testing platform. Utility Model Content

[0005] The purpose of this utility model is to provide a chain-structure tensile testing table to solve the problems mentioned in the background art, such as poor adaptability, time-consuming fixture replacement affecting efficiency, cumbersome clamping, and easy deviation leading to low testing accuracy.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a chain-type tensile testing table, including a base, a fixed clamping seat fixedly disposed on one side of the base, and a sliding base disposed above the base that can slide along its length direction; a control component, a drive motor, and a movable clamping seat are disposed on the sliding base, the movable clamping seat being able to slide along the length direction of the sliding base; the output end of the drive motor is connected to a lead screw transmission mechanism, the output end of the lead screw transmission mechanism being connected to the movable clamping seat through a force sensor; the fixed clamping seat is provided with a fixing bolt assembly for fixing one end of the chain being tested, and the movable clamping seat is provided with a movable bolt assembly for fixing the other end of the chain being tested.

[0007] Preferably, the lead screw drive mechanism includes a lead screw connected to the output end of the drive motor, a nut seat threaded to the lead screw, a drive push rod fixedly connected to the nut seat, and an outer sleeve sleeved outside the drive push rod; the end of the drive push rod is connected to a force sensor, and the outer sleeve provides protection and guidance for the drive push rod.

[0008] Preferably, the force sensor is a load sensor, whose signal output terminal is electrically connected to the signal input terminal of the control component, and the control output terminal of the control component is electrically connected to the drive motor.

[0009] Preferably, the upper surface of the sliding base is provided with a T-shaped guide rail extending along its length, and the bottom of the movable clamping seat is provided with a T-shaped groove that mates with the T-shaped guide rail; the bottom of the sliding base is fixedly provided with an L-shaped guide rail extending along its length, and the machine base is provided with an L-shaped guide groove that mates with the L-shaped guide rail.

[0010] Preferably, an adjusting bracket is provided below the end of the sliding base away from the fixed clamping seat. An adjusting screw is rotatably mounted on the adjusting bracket. One end of the adjusting screw is threaded to the machine base, and the other end is provided with an adjusting handwheel. Limiting rings are provided on both sides of the adjusting bracket on the adjusting screw.

[0011] Preferably, both the fixed bolt group and the movable bolt group consist of three columns arranged in a triangle, and each column has an anti-detachment flange with a diameter larger than the column body at its upper end.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This utility model features a sliding base with an L-shaped guide rail at the bottom that engages with an L-shaped guide groove on the machine base, allowing for smooth sliding. The operator rotates the adjusting handwheel, causing the adjusting screw to rotate. This screw, in conjunction with the screw thread on the machine base, converts the displacement of the sliding base into linear displacement, quickly adjusting the distance to the fixed clamping seat. Adjustment requires no clamp replacement; a limit stop ring controls the stroke to prevent collisions; it is compatible with chains of various sizes, improving versatility and reducing cost and time consumption.

[0014] This invention utilizes a triangularly distributed column arrangement for both fixed and movable bolt groups, forming an open clamping structure. Operators simply need to insert the chain links at both ends into the corresponding columns for fixation, eliminating the need for complex operations and reducing preparation time. The T-shaped groove at the bottom of the movable clamping seat cooperates with the T-shaped guide rail of the sliding base to ensure smooth movement, prevent tension deviation, and balance efficiency and testing accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of a chain-type tensile testing table according to the present invention. Figure 1 ;

[0016] Figure 2This is a schematic diagram of the main structure of a chain-type tensile testing table according to the present invention. Figure 2 ;

[0017] Figure 3 This is a side sectional view of the base and sliding base of a chain-type tensile testing table according to the present invention.

[0018] Figure 4 This is a schematic diagram of the adjusting screw in a chain-type tensile testing platform according to the present invention;

[0019] In the diagram: 1. Base; 2. Fixed clamping seat; 3. Sliding base; 4. Control components; 5. Drive motor; 6. Movable clamping seat; 7. Screw drive mechanism; 8. Force sensor; 9. Fixed bolt assembly; 10. Movable bolt assembly; 11. T-shaped guide rail; 12. L-shaped guide rail; 13. Adjusting bracket; 14. Adjusting screw; 15. Handwheel; 16. Limiting ring. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0021] Please see Figures 1-4 This utility model provides a technical solution: a chain-type tensile testing bench, including a base 1, a fixed clamping seat 2 fixedly mounted on one side of the base 1, and a sliding base 3 that can slide along its length direction above the base 1; a control component 4, a drive motor 5, and a movable clamping seat 6 are mounted on the sliding base 3, and the movable clamping seat 6 can slide along the length direction of the sliding base 3; the output end of the drive motor 5 is connected to a lead screw transmission mechanism 7, and the output end of the lead screw transmission mechanism 7 is connected to the movable clamping seat 6 through a force sensor 8; the fixed clamping seat 2 is provided with a fixing bolt group 9 for fixing one end of the chain under test, and the movable clamping seat 6 is provided with a movable bolt group 10 for fixing the other end of the chain under test. The base 1 provides basic support and installation reference for the entire testing bench. The fixed clamping seat 2 is used to fix one end of the chain under test, remains stationary during the test, and provides reaction force. The sliding base 3 can move along the base 1 to adjust the initial distance between the entire sliding unit and the fixed clamping seat 2 to accommodate chains of different lengths under test. During testing, the drive motor 5 receives commands from the control component 4 and drives the lead screw transmission mechanism 7 to generate linear thrust. This thrust is transmitted to the movable clamping seat 6 via the force sensor 8, thereby applying tension to the chain connected between the fixed bolt group 9 and the movable bolt group 10. The force sensor 8 monitors the tension value in real time and feeds the signal back to the control component 4, forming a closed-loop control to ensure the accuracy and safety of the test.

[0022] The lead screw drive mechanism 7 includes a lead screw connected to the output end of the drive motor 5, a nut seat threaded to the lead screw, a drive push rod fixedly connected to the nut seat, and an outer sleeve covering the drive push rod. The end of the drive push rod is connected to the force sensor 8, and the outer sleeve protects and guides the drive push rod. The lead screw converts the rotational motion of the drive motor 5 into linear motion. The nut seat moves along the axis as the lead screw rotates, thereby pushing the drive push rod fixed to it to move linearly, thus outputting thrust. The outer sleeve wraps around the drive push rod, effectively preventing dust and foreign objects from entering the transmission components, while providing precise radial guidance for the movement of the drive push rod, ensuring that the transmission of thrust is always consistent with the axis of the force sensor 8 and the movable clamping seat 6, avoiding lateral force interference, and ensuring the accuracy of force measurement.

[0023] Force sensor 8 is a load sensor. Its signal output terminal is electrically connected to the signal input terminal of control component 4, and the control output terminal of control component 4 is electrically connected to drive motor 5. Force sensor 8 is the core measuring element of the system. Its internal strain gauge deforms under thrust, causing a change in resistance and outputting an electrical signal proportional to the applied tension. This signal is transmitted to control component 4 in real time. Control component 4 typically includes a signal conditioning circuit, a microprocessor, and a motor driver. The microprocessor compares the received force signal with the user-preset target value (such as maximum tension or tensile speed) and generates control commands. The motor driver precisely adjusts the speed and direction of drive motor 5, thereby achieving constant speed, constant force, or automatic testing following a specific program, and recording, displaying, and judging the test data.

[0024] The upper surface of the sliding base 3 is provided with a T-shaped guide rail 11 extending along its length, and the bottom of the movable clamping seat 6 is provided with a T-shaped groove that mates with the T-shaped guide rail 11. An L-shaped guide rail 12 extending along its length is fixedly provided at the bottom of the sliding base 3, and an L-shaped guide groove that mates with the L-shaped guide rail 12 is provided on the base 1. The cooperation between the T-shaped guide rail 11 and the T-shaped groove provides high-rigidity guidance and support for the movement of the movable clamping seat 6 on the sliding base 3, ensuring that it can only slide smoothly along a preset axis when subjected to huge tensile forces, preventing tilting, deviation, or jamming. The cooperation between the L-shaped guide rail 12 and the L-shaped guide groove is used to guide and constrain the movement of the entire sliding base 3 relative to the base 1, ensuring smooth sliding and accurate positioning when adjusting the initial distance, and providing stable support for the sliding unit during testing.

[0025] An adjusting bracket 13 is located below the end of the sliding base 3 furthest from the fixed clamping seat 2. An adjusting screw 14 is rotatably mounted on the adjusting bracket 13. One end of the adjusting screw 14 is threadedly connected to the machine base 1, and the other end is equipped with an adjusting handwheel 15. Limiting rings 16 are provided on both sides of the adjusting screw 14 on the adjusting bracket 13. This adjusting mechanism is used to manually and precisely adjust the initial position of the sliding base 3. Rotating the adjusting handwheel 15 drives the adjusting screw 14 to rotate. Since the adjusting screw 14 is threadedly engaged with the machine base 1, its rotational motion is converted into linear movement of the adjusting bracket 13 and the sliding base 3 together relative to the machine base 1, thereby changing the distance between the fixed clamping seat 2 and the movable clamping seat 6 to accommodate chains of different lengths. The limiting rings 16 are used to limit the axial movement range of the adjusting screw 14, prevent it from dislodging from the adjusting bracket 13, and control the maximum and minimum adjustment stroke of the sliding base 3, thus providing a safety protection function.

[0026] Both the fixed bolt assembly 9 and the movable bolt assembly 10 consist of three posts arranged in a triangle. Each post has an anti-detachment flange at its upper end with a diameter larger than the post body. The three posts form a stable clamping plane that engages with the inner side of the chain's end links. The end links of the chain under test are fitted onto the posts of the fixed bolt assembly 9 and the movable bolt assembly 10, respectively. The triangular arrangement ensures that the chain will not twist in any direction, ensuring that the tension is applied strictly along the chain's axis. The anti-detachment flange, with a diameter larger than the post body, prevents the chain end from accidentally detaching from the posts during testing, especially in the event of chain slackness or sudden breakage, greatly improving operational safety.

[0027] Working principle:

[0028] When testing chains of different lengths, the equipment must first be adjusted to match the chain length. The operator rotates the adjusting handwheel 15 below the end of the sliding base 3 away from the fixed clamp 2, causing the adjusting screw 14 on the adjusting bracket 13 to rotate. Because the adjusting screw 14 is threadedly connected to the machine base 1, the rotational motion is converted into linear motion of the adjusting bracket 13, which in turn causes the sliding base 3 to slide along the L-shaped guide groove of the machine base 1 (which cooperates with the L-shaped guide rail 12 at the bottom of the sliding base 3). During the adjustment process, the limiting retaining rings 16 on both sides of the adjusting screw 14 restrict the stroke of the sliding base 3 to prevent the parts from falling off or colliding, until the position matches the chain length and the adjustment is stopped. Then, the chain under test is fixed: one end of the chain link is fitted into the triangular post of the fixed bolt group 9 on the fixed clamp 2, and the other end is fitted into the post of the movable bolt group 10 on the movable clamp 6; the anti-detachment flanges of the two bolt groups can prevent the chain from falling off, and the triangular distribution can prevent the chain from twisting, ensuring that the tension is applied along the axis. Next, the tensile test is initiated: the operator presets parameters (such as maximum tensile force and application rate) on the touchscreen of the control component 4 on the sliding base 3. The control component 4, as the core control unit, sends a start command to the drive motor 5. The drive motor 5 drives the lead screw transmission mechanism 7, converting the rotational motion into linear motion. Through the transmission push rod, it pushes the movable clamping seat 6 to slide along the T-shaped guide rail 11 of the sliding base 3 (which cooperates with the T-shaped slide groove at the bottom of the movable clamping seat 6), applying tensile force to the chain. The outer sleeve of the lead screw transmission mechanism 7 also serves as a protective and guiding function. During the application of tensile force, the force sensor 8 detects the tensile force on the chain in real time and feeds the signal back to the control component 4. The control component 4 adjusts the speed of the drive motor 5 according to the feedback signal to achieve precise control of the tensile force. If the tensile force reaches the preset value or an abnormality such as the chain is about to break is detected, the motor is immediately stopped and the test data is recorded. After the test is completed, the control component 4 controls the drive motor 5 to run in reverse, which drives the lead screw transmission mechanism 7 to make the movable clamp 6 return to the initial position; the operator removes the chain under test from the fixed bolt group 9 and the movable bolt group 10. If different length chains need to be tested, the above process can be repeated.

[0029] Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

Claims

1. A chain structure tension detection platform, comprising a base (1), characterized in that: One side of the base (1) is fixedly provided with a fixed clamping seat (2), and an upper portion of the base (1) is provided with a sliding base (3) which can slide along the length direction thereof; the sliding base (3) is provided with a control assembly (4), a driving motor (5) and a movable clamping seat (6), and the movable clamping seat (6) can slide along the length direction of the sliding base (3); an output end of the driving motor (5) is connected with a screw rod transmission mechanism (7), and an output end of the screw rod transmission mechanism (7) is connected with the movable clamping seat (6) through a force sensor (8); the fixed clamping seat (2) is provided with a fixed bolt group (9) for fixing one end of a measured chain, and the movable clamping seat (6) is provided with a movable bolt group (10) for fixing the other end of the measured chain.

2. The chain structure tension detection table according to claim 1, characterized in that: The screw rod transmission mechanism (7) comprises a screw rod connected with the output end of the driving motor (5), a nut seat threadedly matched with the screw rod, a transmission push rod fixedly connected with the nut seat, and an outer sleeve provided outside the transmission push rod; an end portion of the transmission push rod is connected with the force sensor (8), and the outer sleeve plays a protection and guiding role on the transmission push rod.

3. The chain structure tension detection table according to claim 1, characterized in that: The force sensor (8) is a load sensor, a signal output end of which is electrically connected with a signal input end of the control assembly (4), and a control output end of the control assembly (4) is electrically connected with the driving motor (5).

4. The chain structure tension detection table according to claim 1, characterized in that: An upper surface of the sliding base (3) is provided with a T-shaped guide rail (11) extending along the length direction thereof, and a bottom portion of the movable clamping seat (6) is provided with a T-shaped sliding groove matched with the T-shaped guide rail (11); a bottom portion of the sliding base (3) is fixedly provided with an L-shaped guide rail (12) extending along the length direction thereof, and the base (1) is provided with an L-shaped guide groove matched with the L-shaped guide rail (12).

5. The chain structure tension detection table according to claim 1, characterized in that: An end of the sliding base (3) away from the fixed clamping seat (2) is provided below with an adjusting support (13), and an adjusting screw rod (14) is rotatably installed on the adjusting support (13); one end of the adjusting screw rod (14) is threadedly connected with the base (1), and the other end is provided with an adjusting hand wheel (15); limit stop rings (16) are arranged on both sides of the adjusting support (13) on the adjusting screw rod (14).

6. The chain structure tension detection table according to claim 1, characterized in that: The fixed bolt group (9) and the movable bolt group (10) are each composed of three vertical columns which are distributed in a triangular shape, and each vertical column is provided at an upper end thereof with an anti-falling flange which has a larger diameter than the column body.

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