Pre-tensioning measuring equipment for timing chain of automobile engine

Abstract

The utility model discloses an automobile engine timing chain pretension measuring device, comprising a transfer assembly comprising a rack, a transfer x-axis driving mechanism and a transfer clamping structure; the pre-tensioning measuring assembly comprises a sliding seat, a first sliding block, a second sliding block, a first pre-tensioning chain, a second pre-tensioning chain, a pre-tensioning y-axis driving mechanism and a z-axis rotation driving module, the first sliding block is rotationally connected with a first chain wheel, the second sliding block is rotationally connected with a second chain wheel, the first sliding block is provided with a first hinged support and a second hinged support, and the second sliding block is provided with a second hinged support; a third hinged support is arranged on one side of the second sliding block, one end of a first pre-tensioning chain is hinged to the first hinged support, a pressure sensor is connected with a fourth hinged support and a pre-tensioning y-axis driving mechanism, a second pre-tensioning chain is hinged to the second hinged support and the third hinged support, the sliding base is rotationally connected with a first gear and a second gear, and a first chain wheel is connected to a z-axis rotation driving module. The pre-tensioning device is high in pre-tensioning measurement efficiency, compact and reliable in structure and real and reliable in pre-tensioning measurement result.

Description

Technical Field

[0001] This utility model relates to the field of chain testing technology, and in particular to a preload measurement device for automobile engine timing chains. Background Technology

[0002] In industrial production, chains serve as crucial components for transmission and connection, and their stability and reliability are paramount. Chains are primarily composed of a series of interconnected links, which transmit force or motion between two or more objects through the connection and coordination of these links. The timing chain in an automotive engine is a type of chain and an important component of the engine's valve train system.

[0003] During the manufacturing and use of chains, the stability of their structure affects their performance. Before production, a pre-tension test is often required to ensure that the chain can achieve the expected tension and elongation during use, thereby improving its service life and safety. Traditional chain pre-tension measurement methods are mostly manual, which is not only inefficient but also susceptible to human error, resulting in insufficient measurement accuracy. Utility Model Content

[0004] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a device for measuring the preload of an automotive engine timing chain, which provides accurate and reliable measurement results, high measurement efficiency, a compact and reliable structure, and occupies little space.

[0005] A preload measuring device for automobile engine timing chain according to an embodiment of the present invention includes:

[0006] The transfer assembly includes a frame, a transfer x-axis drive mechanism, and a transfer clamping structure. The transfer x-axis drive mechanism is connected to the frame, and the transfer clamping structure is connected to the transfer x-axis drive mechanism. The transfer x-axis drive mechanism is used to drive the movement of the transfer clamping structure, and the transfer clamping structure is used to clamp the chain product.

[0007] The pre-tension measurement assembly includes a slide block, a first slider, a second slider, a first pre-tension chain, a second pre-tension chain, a pre-tension y-axis drive mechanism, and a z-axis rotation drive module. The slide block is located in the projection of the motion trajectory of the transfer clamping structure, and its extension direction is parallel to the y-axis. Both the first and second sliders are slidably connected to the slide block. A first sprocket is rotatably connected to the first slider, and a second sprocket is rotatably connected to the second slider. A first hinge is provided on the side of the first slider away from the second slider, and a second hinge is provided on the other side of the first slider. The second slider is located away from the first slider. A third hinge seat is provided on one side. One end of the first pre-tension chain is hinged to the first hinge seat, and the other end of the first pre-tension chain is hinged to a fourth hinge seat. The fourth hinge seat is provided with a pressure sensor, which is connected to the fourth hinge seat and the pre-tension y-axis drive mechanism. The opposite ends of the second pre-tension chain are respectively hinged to the second hinge seat and the third hinge seat. The slide is rotatably connected to the first gear and the second gear. The first pre-tension chain is wound around the first gear, and the second pre-tension chain is wound around the second gear. The z-axis rotation drive module is connected to the first slider, and the first sprocket is connected to the z-axis rotation drive module.

[0008] In this embodiment, the pre-tension measurement component further includes a reset y-axis drive mechanism, and the second slider is connected to the reset y-axis drive mechanism.

[0009] In this embodiment, the pre-tension measurement component also includes a detection camera, which is located on one side of the slide.

[0010] In this embodiment, the z-axis rotation drive module includes a motor, a right-angle converter, a rotating shaft, and a bearing. The motor is connected to the bottom of the first slider, the rotating shaft is connected to the first sprocket, the bearing is connected to the rotating shaft and the first slider, and the right-angle converter is connected to the rotating shaft and the output end of the motor.

[0011] In this embodiment, the pre-tension y-axis drive mechanism is a servo electric cylinder driven along the y-axis.

[0012] In this embodiment, a recycling box is also provided on the frame, and the recycling box is located on the x-axis side of the slide.

[0013] In this embodiment, the transfer clamping structure includes a transfer z-axis drive mechanism, two transfer y-axis drive mechanisms, and two clamping modules. The two transfer y-axis drive mechanisms are all connected to the transfer z-axis drive mechanism, and the two clamping modules are respectively connected to the two transfer y-axis drive mechanisms.

[0014] In this embodiment, the clamping module includes a y-axis translation plate, a clamping drive mechanism, a push-pull bar, and two grippers. The y-axis translation plate is connected to the transfer y-axis drive mechanism, the clamping drive mechanism is connected to the y-axis translation plate, and the push-pull bar is connected to the clamping drive mechanism. The push-pull bar is parallel to the y-axis. The y-axis translation plate has two guide grooves located on both sides of the push-pull bar. One end of each gripper is rotatably connected to the push-pull bar. Each gripper has a guide post in the middle. The two guide posts are slidably connected to the two guide grooves. Each guide groove is bent away from the push-pull bar along the x-axis direction. The guide groove is used to drive the other end of the gripper to rotate away from the push-pull bar along the x-axis direction, so that the other end of the gripper clamps the chain product.

[0015] In this embodiment, there are two transfer clamping structures.

[0016] The embodiments of this utility model have at least the following beneficial effects:

[0017] Through the coordinated operation of the transfer component and the pre-tension measurement component, rapid clamping, transfer, and pre-tension measurement of the chain are achieved. This improves measurement efficiency and accuracy, resulting in high pre-tension measurement efficiency. Operation requires no direct manual intervention, ensuring good safety. The first pre-tension chain drives the first slider via the pre-tension Y-axis drive mechanism. The first gear, which winds around the first pre-tension chain, effectively improves the utilization of longitudinal space. The equipment has a compact and reliable structure. The second pre-tension chain links the second and first sliders, and the second gear, which winds around the second pre-tension chain, enables steering. This allows the first and second sliders to be connected in series. The synchronous or opposite movements of the pre-tension y-axis drive mechanism, with its output displacement matching that of the two sliders, effectively reduce the required output drive stroke and space requirements. This, in turn, reduces the size of the pre-tension measurement equipment for automotive engine timing chains, improving the compactness of the equipment structure. Furthermore, the first and second sprockets tighten and straighten the chain, and the first sprocket drives the chain to rotate, effectively simulating the taut working state of the chain. This significantly improves the accuracy and reliability of the pre-tension measurement, ensuring accurate and reliable results. Attached Figure Description

[0018] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0019] Figure 1 This is a three-dimensional structural diagram of the pretension measuring device for the timing chain of an automobile engine, according to an embodiment of the present invention.

[0020] Figure 2This is a partial structural diagram of the transfer component in the pretension measuring device for the timing chain of an automobile engine, according to an embodiment of the present invention.

[0021] Figure 3 This is a three-dimensional structural diagram of the pretension measuring component in the pretension measuring device for the timing chain of an automobile engine, according to an embodiment of the present invention.

[0022] Figure 4 This is a top view of the pretension measuring component in the pretension measuring device for the timing chain of an automobile engine, according to an embodiment of the present invention.

[0023] Figure 5 For along Figure 4 A schematic diagram of the cross-sectional structure of line A-A'.

[0024] Figure label:

[0025] Transfer assembly 100, frame 110, transfer x-axis drive mechanism 120, transfer z-axis drive mechanism 130, transfer y-axis drive mechanism 140, y-axis translation plate 150, guide groove 151, clamping drive mechanism 160, push-pull bar 170, gripper 180, guide post 181, recycling box 190;

[0026] The pre-tension measuring assembly 200, slide block 210, first gear 211, second gear 212, first slider 220, first sprocket 221, first hinge 222, second hinge 223, second slider 230, second sprocket 231, third hinge 232, first pre-tension chain 240, fourth hinge 241, pressure sensor 242, second pre-tension chain 250, pre-tension y-axis drive mechanism 260, z-axis rotation drive module 270, motor 271, right-angle converter 272, rotating shaft 273, bearing 274, reset y-axis drive mechanism 280, and detection camera 290. Detailed Implementation

[0027] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0028] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, left, right, front, and back, are based on the directional or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0029] In the description of this utility model, if the wire sleeve or bracket is mentioned, it is only for the purpose of distinguishing technical features and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0030] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0031] As a crucial component for transmission and connection, the stability and reliability of chain performance are paramount. Chains are primarily composed of a series of interconnected links, which transmit force or motion between two or more objects through the connection and engagement of these links. The timing chain in an automotive engine is a type of chain and an important part of the engine's valve train system. During manufacturing and use, the structural stability of the chain affects its performance. Before production, pre-tension testing is often required to ensure that it achieves the expected tension and elongation during post-production use, thereby improving its service life and safety. Traditional chain pre-tension measurement methods mostly rely on manual operation, which is not only inefficient but also susceptible to human error, resulting in insufficient measurement accuracy.

[0032] Among the related technologies, semi-automatic measuring devices for pre-tensioning have emerged. However, pre-tensioning measurement still requires manual assistance, and the overall structure is large and occupies a lot of space. Some devices have limited pre-tensioning measurement capabilities, only capable of taut pre-tensioning measurement, and cannot effectively simulate actual application scenarios. In addition, some devices have complex structures and high maintenance costs, which are not conducive to large-scale promotion and application.

[0033] The following is for reference only. Figure 1 To be continued Figure 5 This invention describes a device for measuring the pretension of a timing chain in an automotive engine, which provides accurate and reliable measurement results, high measurement efficiency, a compact and reliable structure, and occupies little space.

[0034] Reference Figures 1 to 5 An embodiment of the present invention provides a preload measuring device for an automotive engine timing chain, comprising:

[0035] The transfer assembly 100 includes a frame 110, a transfer x-axis drive mechanism 120, and a transfer clamping structure. The transfer x-axis drive mechanism 120 is connected to the frame 110, and the transfer clamping structure is connected to the transfer x-axis drive mechanism 120. The transfer x-axis drive mechanism 120 is used to drive the transfer clamping structure to move along the x-axis direction. The transfer clamping structure is used to clamp the chain product, and the product chain can be an automobile engine timing chain.

[0036] The pre-tension measuring assembly 200 includes a slide 210, a first slider 220, a second slider 230, a first pre-tension chain 240, a second pre-tension chain 250, a pre-tension y-axis drive mechanism 260, and a z-axis rotation drive module 270. The slide 210 is located in the projection of the motion trajectory of the transfer clamping structure, so that the transfer clamping structure can transfer the chain product onto the slide 210. Preferably, both the slide 210 and the pre-tension y-axis drive mechanism 260 are connected to the frame 110, and the extension direction of the slide 210 is parallel to the y-axis. The first slider 220 and the second slider 230 are slidably connected in the slide 210. Preferably, the slide 210 is provided with a mechanism for adjusting the first slider 220 and the second slider 230. The second slider 230 acts as a guide rail, limiting the movement of the first slider 220 and the second slider 230 within the slide block 210 to the y-axis direction only. The first slider 220 and the second slider 230 are distributed along the y-axis. A first sprocket 221 is rotatably connected to the first slider 220, with its central axis parallel to the z-axis. A second sprocket 231 is rotatably connected to the second slider 230, with its central axis parallel to the z-axis. The first sprocket 221 and the second sprocket 231 are used to wind the chain product and drive it to tautness and transmission. A first hinge seat 222 is provided on the side of the first slider 220 away from the second slider 230. The other side of the first slider 220... A second hinge seat 223 is provided on the side of the first slider 220 near the second slider 230, and a third hinge seat 232 is provided on the side of the second slider 230 away from the first slider 220. One end of the first pre-tension chain 240 is hinged to the first hinge seat 222, and the other end of the first pre-tension chain 240 is hinged to a fourth hinge seat 241. The fourth hinge seat 241 is equipped with a pressure sensor 242, and the two ends of the pressure sensor 242 are respectively connected to the fourth hinge seat 241 and the pre-tension y-axis drive mechanism 260. The pressure sensor 242 is used to measure the interaction force formed between the pre-tension y-axis drive mechanism 260 and the fourth hinge seat 241, thereby measuring the pre-tension result of the chain. The two ends of the second pre-tensioned chain 250 are respectively hinged to the second hinge seat 223 and the third hinge seat 232. The slide 210 is rotatably connected to the first gear 211 and the second gear 212. The first pre-tensioned chain 240 is wound around the first gear 211 so that the first chain can bend into a U-shape, thereby realizing the direction of transmission. The second pre-tensioned chain 250 is wound around the second gear 212 so that the second chain can bend into a U-shape, thereby realizing the direction of transmission. The z-axis rotation drive module 270 is connected to the bottom of the first slider 220. The first sprocket 221 is connected to the z-axis rotation drive module 270. The z-axis rotation drive module 270 is used to drive the first sprocket 221 to rotate.

[0037] During operation, the transfer assembly 100 transfers the chain product from the external conveyor belt to the first slide 210 and the second slide 210. The chain surrounds the first sprocket 221 and the second sprocket 231. The pre-tension y-axis drive mechanism 260 drives the fourth hinge 241 to move via the pressure sensor 242, thereby pulling the first pre-tension chain 240. The first pre-tension chain 240 passes around the first gear 211 and pulls the first hinge 222, causing the first slider 220 to move away from the second slider 230. At the same time, the second hinge 223 follows the movement of the first slider 220, thereby pulling the second pre-tension chain 250. Under the steering action of the second gear 212... The second pre-tension chain 250 pulls the third hinge seat 232, thereby driving the second slider 230 to move away from the first slider 220, so that the two first sprockets 221 and the second sprocket 231 move away from each other, thereby tightening the taut chain product and forming a pre-tension measurement effect. At this time, the z-axis rotation drive module 270 drives the first sprocket 221 to rotate, so that during the pre-tension process, the rotation of the first sprocket 221 can perform a high-tension test on the chain product in the pre-tension taut state, which can effectively improve the test results. The measurement value of the pressure sensor 242 can be used for analysis system or analysts to obtain the pre-tension measurement results.

[0038] Through the coordinated operation of the transfer assembly 100 and the pre-tension measurement assembly 200, rapid clamping, transfer, and pre-tension measurement of the chain are achieved. This improves measurement efficiency and accuracy, and ensures high safety as no manual intervention is required during normal operation. The first pre-tension chain 240 drives the pre-tension y-axis drive mechanism 260 to drive the first slider 220. The first gear 211 allows the first pre-tension chain 240 to wind around, effectively improving the utilization of longitudinal space. The equipment has a compact and reliable structure. The second pre-tension chain 250 links the second slider 230 and the first slider 220, and the second gear 212 allows the second pre-tension chain 250 to wind around to achieve steering. This allows the first slider 220 and the second slider 230 to move synchronously in opposite directions or in series. The output displacement of the pre-tension y-axis drive mechanism 260 is the same as the displacement of the two sliders. When driving the two sliders to a predetermined stroke, compared to the conventional approach of using two separate y-axis drive mechanisms to drive the first slider 220 and the second slider 230, this pre-tension measurement device can effectively reduce the required output drive stroke of the pre-tension y-axis drive mechanism 260, thereby reducing the space occupied by the pre-tension y-axis drive mechanism 260 and thus effectively reducing the size of the automotive engine timing chain pre-tension measurement device. This effectively improves the compactness of the device structure. Furthermore, the use of a single pre-tension y-axis drive mechanism 260 can reduce the errors caused by using multiple drive mechanisms, further improving measurement accuracy. In addition, by using the first sprocket 221 and the second sprocket 231 to tighten and straighten the chain product, and by using the first sprocket 221 to drive the chain product to rotate, the working state of the chain product when it is tightened and straight can be effectively simulated, which can effectively improve the accuracy and reliability of the pre-tension measurement, and the pre-tension measurement results are true and reliable.

[0039] It is understood that the pre-tension measurement assembly 200 also includes a reset y-axis drive mechanism 280. The second slider 230 is connected to one end of the reset y-axis drive mechanism 280, and the other end of the reset y-axis drive mechanism 280 can be connected to the frame 110 or the slide block 210. The reset y-axis drive mechanism 280 is used to drive the second slider 230 to reset. Under the action of the second pre-tension chain 250, it can simultaneously drive the first slider 220 to reset. Preferably, the reset y-axis drive mechanism 280 can be set as an external force reset cylinder. By separating the pre-tension y-axis drive mechanism 260 and the reset y-axis drive mechanism 280, the pre-tension test is performed by applying a larger pre-tension force with the pre-tension y-axis drive mechanism 260, and the reset y-axis drive mechanism 280 is applied with a smaller force for reset. The design is reasonable, the overall equipment structure is stable and reliable, and with the setting of the pre-tension chain and gears, the space occupied by the reset y-axis drive mechanism 280 can be effectively reduced, thereby effectively reducing the volume of the pre-tension measurement equipment for automotive engine timing chains.

[0040] It is understood that the pre-tension measurement component 200 also includes a detection camera 290, which is located on one side of the slide 210. The lens of the detection camera 290 is directly facing between the first sprocket 221 and the second sprocket 231. The detection camera 290 is used to detect the appearance of the chain product, thereby obtaining the state of the chain product during pre-tension. The pre-tension result can be measured through the appearance.

[0041] Specifically, the pre-tension measurement component 200 also includes an illumination module located at the lens of the detection camera 290. The illumination module provides supplementary illumination to the position between the first sprocket 221 and the second sprocket 231, thereby effectively improving the detection accuracy.

[0042] It is understood that the z-axis rotation drive module 270 includes a motor 271, a right-angle converter 272, a rotating shaft 273, and a bearing 274. The motor 271 is connected to the bottom of the first slider 220. The rotating shaft 273 is parallel to the z-axis and connected to the first sprocket 221. The bearing 274 connects the rotating shaft 273 and the first slider 220 so that the rotating shaft 273 can rotate relative to the first slider 220. The right-angle converter 272 connects the rotating shaft 273 and the output end of the motor 271. By using the right-angle converter 272 to make the motor 271 horizontally placed, the restrictions on the installation of the motor 271 can be relaxed, which can effectively improve the overall structural compactness of the equipment and effectively improve the space utilization rate, thereby effectively reducing the volume of this pre-tension measurement equipment.

[0043] It is understandable that the pre-tension y-axis drive mechanism 260 is a servo electric cylinder that outputs drive along the y-axis. The servo electric cylinder is a modular product that integrates the servo motor 271 and the lead screw. It converts the rotational motion of the servo motor 271 into linear motion, and at the same time realizes precise speed control, precise position control, and precise thrust control, which can effectively improve the accuracy of pre-tension detection.

[0044] Furthermore, the driving distance of the servo cylinder reflects the relative displacement distance between the first sprocket 221 and the second sprocket 231, thus enabling the measurement of the center distance of the chain product. This automotive engine timing chain preload measurement device can simultaneously measure the preload and center distance of the chain product, offering strong functionality. It should be noted that position detectors, such as optical encoders, are provided between the slide block 210 and the first slider 220 and the second slider 230, respectively, to directly detect the positions of the first slider 220 and the second slider 230 relative to the slide block 210. This directly reflects the center distance of the chain product, effectively improving the accuracy of the measurement results.

[0045] Understandably, the frame 110 is also equipped with a recycling box 190, which is located on the x-axis side of the slide 210. The recycling box 190 is used to collect unqualified chain products for easy repair or scrapping.

[0046] It is understood that the transfer clamping structure includes a transfer z-axis drive mechanism 130, two transfer y-axis drive mechanisms 140, and two clamping modules. The two transfer y-axis drive mechanisms 140 are connected to the transfer z-axis drive mechanism 130, and the drive trajectories of the two transfer y-axis drive mechanisms 140 are collinear. The transfer z-axis drive mechanism 130 is connected to the transfer y-axis drive mechanism 140. The two clamping modules are respectively connected to the two transfer y-axis drive mechanisms 140. The clamping modules are used to clamp the straightened chain product.

[0047] It is understood that the clamping module includes a y-axis translation plate 150, a clamping drive mechanism 160, a push-pull bar 170, and two grippers 180. The y-axis translation plate 150 is connected to the transfer y-axis drive mechanism 140, the clamping drive mechanism 160 is connected to the y-axis translation plate 150, and the push-pull bar 170 is connected to the clamping drive mechanism 160. The push-pull bar 170 is parallel to the y-axis. The y-axis translation plate 150 is provided with two guide grooves 151 located on both sides of the push-pull bar 170. Symmetrical about the push-pull bar 170, one end of each gripper 180 is rotatably connected to the push-pull bar 170, and each gripper 180 has a guide post 181 in the middle. The two guide posts 181 are slidably connected in two guide grooves 151. Each guide groove 151 is bent away from the push-pull bar 170 along the x-axis. The guide groove 151 is used to drive the other end of the gripper 180 to rotate away from the push-pull bar 170 along the x-axis, so that the other end of the gripper 180 clamps and tightens the chain product.

[0048] The chain product is clamped by the gripper 180 opening in the x-axis direction, which allows space for the tensioning of the first sprocket 221 and the second sprocket 231, effectively improving the continuity and reliability of the overall equipment operation. Specifically, the other end of the gripper 180 is equipped with an anti-slip positioning post, which is used to straighten the chain product outward. The surface of the anti-slip positioning post is formed with an anti-slip layer, which can effectively improve the positioning effect of the chain product.

[0049] It should be noted that the transfer x-axis drive mechanism 120, transfer z-axis drive mechanism 130, transfer y-axis drive mechanism 140, clamping drive mechanism 160 and reset y-axis drive mechanism 280 can be configured as positioning mechanisms such as electric cylinders and pneumatic cylinders that can achieve linear drive.

[0050] It is understandable that there are two transfer clamping structures. The two transfer clamping structures can effectively improve the transfer efficiency, thereby improving the overall working efficiency of the equipment.

[0051] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A device for measuring the preload of a timing chain in an automotive engine, characterized in that, include: The transfer assembly (100) includes a frame (110), a transfer x-axis drive mechanism (120), and a transfer clamping structure. The transfer x-axis drive mechanism (120) is connected to the frame (110), and the transfer clamping structure is connected to the transfer x-axis drive mechanism (120). The transfer x-axis drive mechanism (120) is used to drive the transfer clamping structure to move, and the transfer clamping structure is used to clamp chain products. The pre-tension measurement assembly (200) includes a slide (210), a first slider (220), a second slider (230), a first pre-tension chain (240), a second pre-tension chain (250), a pre-tension y-axis drive mechanism (260), and a z-axis rotation drive module (270). The slide (210) is located in the projection of the motion trajectory of the transfer clamping structure, and the extension direction of the slide (210) is parallel to the y-axis. The first slider (220) and the second slider (230) All are slidably connected in the slide block (210). A first sprocket (221) is rotatably connected to the first slider (220), and a second sprocket (231) is rotatably connected to the second slider (230). A first hinge seat (222) is provided on the side of the first slider (220) away from the second slider (230), and a second hinge seat (223) is provided on the other side of the first slider (220). There is a third hinge (232). One end of the first pre-tension chain (240) is hinged to the first hinge (222), and the other end of the first pre-tension chain (240) is hinged to a fourth hinge (241). The fourth hinge (241) is equipped with a pressure sensor (242). The pressure sensor (242) is connected to the fourth hinge (241) and the pre-tension y-axis drive mechanism (260). The opposite ends of the second pre-tension chain (250) are respectively hinged to the second hinge (232). The hinge (223) and the third hinge (232) are provided. The slide (210) is rotatably connected to the first gear (211) and the second gear (212). The first pre-tension chain (240) is wound around the first gear (211), and the second pre-tension chain (250) is wound around the second gear (212). The z-axis rotation drive module (270) is connected to the first slider (220), and the first sprocket (221) is connected to the z-axis rotation drive module (270).

2. The preload measuring device for an automotive engine timing chain according to claim 1, characterized in that, The pre-tension measurement assembly (200) further includes a reset y-axis drive mechanism (280), and the second slider (230) is connected to the reset y-axis drive mechanism (280).

3. The preload measuring device for an automotive engine timing chain according to claim 1, characterized in that, The pre-tension measurement assembly (200) also includes a detection camera (290), which is located on one side of the slide (210).

4. The preload measuring device for an automotive engine timing chain according to claim 1, characterized in that, The z-axis rotation drive module (270) includes a motor (271), a right-angle converter (272), a rotating shaft (273), and a bearing (274). The motor (271) is connected to the bottom of the first slider (220), the rotating shaft (273) is connected to the first sprocket (221), the bearing (274) connects the rotating shaft (273) and the first slider (220), and the right-angle converter (272) connects the rotating shaft (273) and the output end of the motor (271).

5. The preload measuring device for an automotive engine timing chain according to claim 1, characterized in that, The pre-tension y-axis drive mechanism (260) is a servo electric cylinder driven along the y-axis.

6. The preload measuring device for an automotive engine timing chain according to claim 1, characterized in that, The frame (110) is also provided with a recycling box (190), which is located on the x-axis side of the slide (210).

7. The preload measuring device for an automotive engine timing chain according to claim 1, characterized in that, The transfer clamping structure includes a transfer z-axis drive mechanism (130), two transfer y-axis drive mechanisms (140), and two clamping modules. The two transfer y-axis drive mechanisms (140) are all connected to the transfer z-axis drive mechanism (130), and the two clamping modules are respectively connected to the two transfer y-axis drive mechanisms (140).

8. The preload measuring device for an automotive engine timing chain according to claim 7, characterized in that, The clamping module includes a y-axis translation plate (150), a clamping drive mechanism (160), a push-pull bar (170), and two grippers (180). The y-axis translation plate (150) is connected to the transfer y-axis drive mechanism (140), the clamping drive mechanism (160) is connected to the y-axis translation plate (150), and the push-pull bar (170) is connected to the clamping drive mechanism (160). The push-pull bar (170) is parallel to the y-axis. The y-axis translation plate (150) has two guide grooves (151) located on both sides of the push-pull bar (170). One end of each gripper (180) is rotatably connected to the push-pull bar (170). Each gripper (180) has a guide post (181) in the middle. Two guide posts (181) are slidably connected to two guide grooves (151). Each guide groove (151) is bent away from the push-pull bar (170) along the x-axis. The guide groove (151) is used to drive the other end of the gripper (180) to rotate away from the push-pull bar (170) along the x-axis, so that the other end of the gripper (180) clamps the chain product.

9. The preload measuring device for an automotive engine timing chain according to claim 8, characterized in that, The transfer clamping structure is provided in two parts.

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