A chain pre-tensioning detection device

Abstract

A chain pre-tensioning detection device belongs to the technical field of chain quality inspection and comprises a device body, a hydraulic system, a pre-tensioning loading system, a chain length detection loading system, a chain length detection device, and an electronic control system. The present invention utilizes the principle of leverage to achieve conversion between the hydraulic system and the required pre-tensioning load of the chain, increasing the hydraulic pressure according to a set ratio and transmitting it to the chain. Under the condition of a certain required pre-tensioning load, the specifications of the relevant components of the hydraulic system are reduced, thereby reducing the equipment investment cost. In addition, the chain detection loading is independent of the chain pre-tensioning loading, which improves the control accuracy of the load application and plays a role in ensuring the quality control of the chain and the accuracy of the inspection results.

Description

Technical Field

[0001] The invention belongs to the technical field of chain quality detection, and in particular relates to a chain pre-tensioning detection device. Background Art

[0002] Chain pre-tensioning is an effective method for testing chain fatigue performance. International standards clearly define the implementation of chain pre-tensioning. For small chains, the required pre-tensioning load is relatively low, and automated pre-tensioning on an assembly line or closed-loop pre-tensioning of the entire chain is typically employed. Larger chains, on the other hand, require higher pre-tensioning loads and are typically pre-tensioned using a hydraulic pre-tensioning machine.

[0003] Traditional pretensioning machines equipped with hydraulic systems apply the preload using a hydraulic cylinder directly connected to a chain clamp. When a high preload is required, this often results in a bulky hydraulic system and equipment, leading to high investment costs. Furthermore, the chain preload differs from the chain length test load by at least 30 times. Using the same control system often results in significant load control errors, impacting chain quality and the accuracy of test results. Summary of the Invention

[0004] In order to overcome the shortcomings of the existing technology, the present invention discloses a chain pre-tensioning detection device, which uses the lever principle to realize the conversion between the hydraulic system and the pre-tensioning load required for the chain. The chain detection loading is independent of the chain pre-tensioning loading, which improves the control accuracy of the load application and plays a role in ensuring the quality control of the chain and the accuracy of the inspection results.

[0005] To achieve the above object, the technical solution of the present invention is:

[0006] A chain pre-tensioning detection device comprises an equipment body, a hydraulic system, a pre-tensioning loading system, a chain length detection loading system, a chain length detection device, and an electronic control system. A connecting mechanism 1 is provided on one side of the top of the equipment body, and a connecting mechanism 2 is provided on the other side of the top. The chain to be detected is provided between the connecting mechanism 1 and the connecting mechanism 2. The pre-tensioning loading system is connected to the connecting mechanism 2 through a lever mechanism, and the pre-tensioning loading of the chain is achieved by pulling the connecting mechanism 2. The chain length detection loading system is provided at the top of the equipment body and connected to the connecting mechanism 2. A chain length detection device is also provided at the top of the equipment body. The chain length detection device is connected to the connecting mechanism 2 and is used to measure the horizontal displacement of the connecting mechanism 2. The hydraulic system is respectively connected to the pre-tensioning loading system and the chain length detection loading system. The electronic control system is connected to the chain length detection device signal through a wire, and is configured to control the hydraulic system, the pre-tensioning loading system, and the chain length detection loading system.

[0007] Preferably, the connecting mechanism 1 includes a left clamp fixing seat and a first chain connecting seat, the left clamp fixing seat is fixedly connected to the top of the equipment body, and the first chain connecting seat is detachably fixedly connected to the right end of the left clamp fixing seat; the connecting mechanism 2 includes a right clamp fixing seat and a second chain connecting seat, the right clamp fixing seat is slidably connected to the top of the equipment body in the horizontal direction, and the second chain connecting seat is detachably fixedly connected to the left end of the right clamp fixing seat, and the chain to be detected is connected between the first chain connecting seat and the second chain connecting seat.

[0008] Preferably, the hydraulic system includes a first hydraulic cylinder, the pre-tension loading system includes a tension sensor and a tension sensor fixing seat, the lever mechanism includes a loading lever and a load conversion seat, the tension sensor fixing seat is hinged to the bottom end of the loading lever, the tension sensor is fixedly connected to the tension sensor fixing seat, the fixed end of the first hydraulic cylinder is hinged to the bottom inside the equipment body, the telescopic end passes through the right end of the equipment body and is fixedly connected to the tension sensor, the loading lever is arranged on the right side of the equipment body, the upper part of the loading lever is hinged to the right end of the equipment body, and the top of the loading lever is fixedly connected to the right end of the right clamp fixing seat through the load conversion seat.

[0009] Preferably, the load conversion seat is arranged horizontally, the left end of the load conversion seat is fixedly connected to the right end of the right clamp fixing seat, and through sliding guide grooves are respectively provided on both sides of the right end of the load conversion seat, and sliding guide rods are respectively provided on both sides of the top of the loading lever. The sliding guide rods pass through the corresponding sliding guide grooves and are slidably connected to the sliding guide grooves. The sliding guide rods slide in the sliding guide grooves to convert the torque of the loading lever into a horizontal loading load.

[0010] Preferably, the hydraulic system includes a second hydraulic cylinder, the chain length detection loading system includes a pressure sensor and a pressure sensor fixing seat, the fixed end of the second hydraulic cylinder is fixedly connected to the top inside the equipment body by bolts, the pressure sensor fixing seat is fixedly connected to the bottom end of the right clamp fixing seat, the telescopic end of the second hydraulic cylinder is fixedly connected to the pressure sensor fixing seat through the pressure sensor, and the top of the equipment body is also provided with a makeshift groove for accommodating the horizontal movement of the pressure sensor fixing seat.

[0011] Preferably, the chain length detection device is a displacement sensor fixed on the top of the equipment body on the right side of the right clamp fixing seat, and the displacement sensor is connected to the right end of the right clamp fixing seat.

[0012] Preferably, the right end of the right clamp fixing seat is provided with a through limiting guide groove, and the upper end of the equipment body is also provided with a limiting plate in the horizontal direction. The limiting plate is slidably connected to the limiting guide groove, and the right clamp fixing seat is always moved horizontally through the sliding connection. The two ends of the limiting plate are fixedly connected to the top of the equipment body.

[0013] Preferably, the first chain connecting seat and the second chain connecting seat are provided with various models according to the specifications of the chain.

[0014] The beneficial effects of the chain pre-tensioning test device disclosed herein include: utilizing the principle of leverage to achieve conversion between the hydraulic system and the required chain pre-tensioning load, increasing the hydraulic pressure according to a set ratio and transmitting it to the chain. This reduces the specifications of the hydraulic system's related components, while maintaining a constant required pre-tensioning load, thereby lowering equipment investment costs. Furthermore, the chain test load is independent of the chain pre-tensioning load, improving load application control accuracy and safeguarding chain quality control and the accuracy of test results. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 , a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 , a schematic diagram of the local structure of A of the present invention;

[0017] Figure 3 , a schematic structural diagram of the pre-tension loading system and the chain length detection loading system of the present invention;

[0018] 1. Equipment body; 2. Hydraulic system; 2-1. Second hydraulic cylinder; 2-2. First hydraulic cylinder; 3. Pre-tension loading system; 3-1. Tension sensor; 3-2. Tension sensor fixing seat; 3-3. Loading lever; 3-3-1. Sliding guide groove; 3-4. Load conversion seat; 3-5. Right clamp fixing seat; 3-5-1. Limiting guide groove; 3-6. Second chain connecting seat; 4. Chain length detection loading system; 4-1. Pressure sensor; 4-2. Pressure sensor fixing seat; 5. Chain length detection device; 6. Electronic control system; 7. Displacement sensor. DETAILED DESCRIPTION

[0019] The following description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

[0020] Example 1:

[0021] A chain pre-tensioning detection device, such as Figure 1-3As shown, it includes an equipment body 1, a hydraulic system 2, a pre-tensioning and loading system 3, a chain length detection and loading system 4, a chain length detection device 5, and an electronic control system 6. A connecting mechanism 1 is provided on one side of the top of the equipment body 1, and a connecting mechanism 2 is provided on the other side of the top. The chain to be detected is provided between the connecting mechanism 1 and the connecting mechanism 2. The pre-tensioning and loading system is connected to the connecting mechanism 2 through a lever mechanism, and the pre-tensioning and loading of the chain is achieved by pulling the connecting mechanism 2. The chain length detection and loading system 4 is provided at the top of the equipment body 1 and is connected to the connecting mechanism 2. A chain length detection device 5 is also provided at the top of the equipment body 1. The chain length detection device 5 is connected to the connecting mechanism 2 and is used to measure the horizontal displacement of the connecting mechanism 2. The hydraulic system 2 is respectively connected to the pre-tensioning and loading system 3 and the chain length detection and loading system 4. The electronic control system 6 is connected to the chain length detection device 5 signal through a wire, and is configured to control the hydraulic system 2, the pre-tensioning and loading system 3, and the chain length detection and loading system 4.

[0022] This embodiment utilizes the principle of leverage to convert the hydraulic system's load into the required chain preload. This increases the hydraulic pressure according to a set ratio and transmits it to the chain. This reduces the size of the hydraulic system's components, while maintaining a constant preload requirement, thereby lowering equipment costs. Furthermore, the chain test load is independent of the chain preload, improving load control accuracy and safeguarding chain quality control and the accuracy of test results.

[0023] Example 2:

[0024] Based on Example 1, this example discloses:

[0025] like Figure 1 As shown, the connecting mechanism 1 includes a left clamp fixing seat (not marked in the figure) and a first chain connecting seat (not marked in the figure), the left clamp fixing seat is fixedly connected to the top of the equipment body, and the first chain connecting seat is detachably fixedly connected to the right end of the left clamp fixing seat; the connecting mechanism 2 includes a right clamp fixing seat 3-5 and a second chain connecting seat 3-6, the right clamp fixing seat 3-5 is slidably connected to the top of the equipment body in the horizontal direction, and the second chain connecting seat 3-6 is detachably fixedly connected to the left end of the right clamp fixing seat 3-5, and the chain to be detected is connected between the first chain connecting seat and the second chain connecting seat 3-6.

[0026] like Figure 1 As shown, the first chain connecting seat and the second chain connecting seat 3-6 are provided with various models according to the specifications of the chain.

[0027] In this embodiment, pre-tensioning loading and chain length detection of chains of various specifications can be achieved by replacing the first chain connecting seat and the second chain connecting seat 3-6.

[0028] Example 3:

[0029] Based on Example 2, this example discloses:

[0030] like Figure 1 、 2 As shown, the right end of the right clamp fixing seat 3-5 is provided with a through limiting guide groove 3-5-1, and the upper end of the device body 1 is also provided with a limiting plate (not marked in the figure) in the horizontal direction. The limiting plate is slidably connected to the limiting guide groove 3-5-1, and the right clamp fixing seat 3-5 is always moved horizontally through the sliding connection. The two ends of the limiting plate are fixedly connected to the top of the device body.

[0031] In this embodiment, a method for horizontally moving the right clamp fixing seat 3-5 is provided. Of course, horizontal movement of the right clamp fixing seat 3-5 can also be achieved by other methods.

[0032] Example 4:

[0033] Based on Example 3, this example discloses:

[0034] like Figure 1 、 3 As shown, the hydraulic system includes a first hydraulic cylinder 2-2, the pre-tensioning loading system 3 includes a tension sensor 3-1 and a tension sensor mounting base 3-2, and the lever mechanism includes a loading lever 3-3 and a load conversion base 3-4. The tension sensor mounting base 3-2 is hinged to the bottom end of the loading lever 3-3, and the tension sensor 3-1 is fixedly connected to the tension sensor mounting base 3-2. The fixed end of the first hydraulic cylinder is hinged to the bottom of the device body 1, and the telescopic end extends through the right end of the device body and is fixedly connected to the tension sensor 3-1. The loading lever 3-3 is located on the right side of the device body, the upper portion of the loading lever 3-3 is hinged to the right end of the device body 1, and the top of the loading lever is fixedly connected to the right end of the right clamp mounting base 3-5 via the load conversion base 3-4. The hinge axis connecting the loading lever to the device body divides the loading lever into an upper portion and a lower portion. The upper portion is shorter than the lower portion, thereby reducing the load on the first hydraulic cylinder through the lever effect, thereby enabling the first hydraulic cylinder to achieve chain pre-tensioning with a lower specification.

[0035] like Figure 1-3As shown, the load conversion seat 3-4 is arranged horizontally, the left end of the load conversion seat 3-4 is fixedly connected to the right end of the right clamp fixing seat 3-5, and a through sliding guide groove 3-3-1 is provided on both sides of the right end of the load conversion seat 3-4, and a sliding guide rod is provided on both sides of the top of the loading lever. The sliding guide rod passes through the corresponding sliding guide groove 3-3-1 and is slidably connected to the sliding guide groove. The sliding guide rod slides in the sliding guide groove to convert the torque of the loading lever 3-3 into a horizontal loading load.

[0036] This embodiment discloses an implementation of the pre-tensioning and loading system 3, which can greatly reduce the cost of chain pre-tensioning and loading and chain length detection through a lever mechanism.

[0037] Example 5:

[0038] Based on Example 4, this example discloses:

[0039] like Figure 1-3 As shown, the hydraulic system includes a second hydraulic cylinder 2-1, the chain length detection loading system 4 includes a pressure sensor 4-1 and a pressure sensor fixing seat 4-2, the fixed end of the second hydraulic cylinder 2-1 is fixedly connected to the top inside the equipment body by bolts, the pressure sensor fixing seat 4-2 is fixedly connected to the bottom end of the right clamp fixing seat 3-5, the telescopic end of the second hydraulic cylinder 2-1 is fixedly connected to the pressure sensor fixing seat 4-2 through the pressure sensor 4-1, and the top of the equipment body is also provided with a makeshift groove for accommodating the horizontal movement of the pressure sensor fixing seat 4-2.

[0040] In this embodiment, the chain length detection loading system 4 is independent of the pre-tension loading system 3 and realizes the chain length detection by applying a thrust to the right clamp fixing seat alone.

[0041] Example 6:

[0042] Based on Example 5, this example discloses:

[0043] like Figure 1 、 2 As shown, the chain length detection device 5 is a displacement sensor 7 fixed on the top of the equipment body on the right side of the right clamp fixing seat 3-5, and the displacement sensor 7 is connected to the right end of the right clamp fixing seat 3-5.

[0044] In the present invention, the chain length data can be displayed on the industrial computer of the electronic control system 6, and parameters such as the chain pre-tension load, pre-tension time, chain length detection load, and detection load loading time can all be set and displayed on the industrial computer of the electronic control system 6.

Claims

1. A chain pre-tensioning detection device, characterized by: It comprises an equipment main body, a hydraulic system, a pre-tensioning and loading system, a chain length detection and loading system, a chain length detection device, and an electronic control system. A connecting mechanism 1 is provided on one side of the top of the equipment main body, and a connecting mechanism 2 is provided on the other side of the top. The chain to be detected is provided between the connecting mechanism 1 and the connecting mechanism 2. The pre-tensioning and loading system is connected to the connecting mechanism 2 through a lever mechanism, and the pre-tensioning and loading of the chain is achieved by pulling the connecting mechanism 2. The chain length detection and loading system is provided at the top of the equipment main body and is connected to the connecting mechanism 2. A chain length detection device is also provided at the top of the equipment main body. The chain length detection device is connected to the connecting mechanism 2 and is used to measure the horizontal displacement of the connecting mechanism 2. The hydraulic system is respectively connected to the pre-tensioning and loading system and the chain length detection and loading system. The electronic control system is connected to the chain length detection device signal through a wire and is configured to control the hydraulic system, the pre-tensioning and loading system, and the chain length detection and loading system. The first connecting mechanism includes a left clamp fixing seat and a first chain connecting seat, the left clamp fixing seat is fixedly connected to the top of the equipment body, and the first chain connecting seat is detachably fixedly connected to the right end of the left clamp fixing seat; the second connecting mechanism includes a right clamp fixing seat and a second chain connecting seat, the right clamp fixing seat is slidably connected to the top of the equipment body in the horizontal direction, and the second chain connecting seat is detachably fixedly connected to the left end of the right clamp fixing seat, and the chain to be detected is connected between the first chain connecting seat and the second chain connecting seat; The hydraulic system includes a first hydraulic cylinder, the pre-tension loading system includes a tension sensor and a tension sensor fixing seat, the lever mechanism includes a loading lever and a load conversion seat, the tension sensor fixing seat is hinged to the bottom end of the loading lever, the tension sensor is fixedly connected to the tension sensor fixing seat, the fixed end of the first hydraulic cylinder is hinged to the bottom inside the equipment body, the telescopic end passes through the right end of the equipment body and is fixedly connected to the tension sensor, the loading lever is provided on the right side of the equipment body, the upper part of the loading lever is hinged to the right end of the equipment body, and the top of the loading lever is fixedly connected to the right end of the right clamp fixing seat through the load conversion seat; The load conversion seat is arranged horizontally, and the left end of the load conversion seat is fixedly connected to the right end of the right clamp fixing seat. A through and vertically arranged sliding guide groove is respectively provided on both sides of the right end of the load conversion seat. A sliding guide rod is respectively provided on both sides of the top of the loading lever. The sliding guide rod passes through the corresponding sliding guide groove and is slidably connected to the sliding guide groove. The sliding guide rod slides in the sliding guide groove to convert the torque of the loading lever into a horizontal loading load. The right end of the right clamp fixing seat is provided with a through limiting guide groove, and the upper end of the equipment body is also provided with a limiting plate in the horizontal direction. The limiting plate is slidably connected to the limiting guide groove, and the right clamp fixing seat is always moved horizontally through the sliding connection. The two ends of the limiting plate are fixedly connected to the top of the equipment body.

2. A chain pre-tensioning detection device according to claim 1, characterized in that: The hydraulic system includes a second hydraulic cylinder, and the chain length detection loading system includes a pressure sensor and a pressure sensor fixing seat. The fixed end of the second hydraulic cylinder is fixedly connected to the top inside the equipment body by bolts, and the pressure sensor fixing seat is fixedly connected to the bottom end of the right clamp fixing seat. The telescopic end of the second hydraulic cylinder is fixedly connected to the pressure sensor fixing seat through the pressure sensor. The top of the equipment body is also provided with a makeshift groove for accommodating the horizontal movement of the pressure sensor fixing seat.

3. A chain pre-tensioning detection device according to claim 2, characterized in that: The chain length detection device is a displacement sensor fixed on the top of the equipment body on the right side of the right clamp fixing seat, and the displacement sensor is connected to the right end of the right clamp fixing seat.

4. A chain pre-tensioning detection device according to any one of claims 1 to 3, characterized in that: The first chain connecting seat and the second chain connecting seat are provided with various models according to the specifications of the chain.

Images