Chain tensioning method of double-chain transmission device

Abstract

A chain tensioning method of a double-chain transmission device comprises the steps that the tensioning force of an upper chain and the tensioning force of a lower chain are obtained firstly, then an upper jacking device and a lower jacking device are arranged, then the distance between action points is measured, then the upper jacking device and the lower jacking device work to preliminarily tension the upper chain and the lower chain, then the lower jacking force is worked out, and finally the tensioning force of the upper chain and the tensioning force of the lower chain are obtained. Then the lower jacking device works until the displayed numerical value reaches the lower jacking force, the lower jacking device stops working, then the upper jacking force is solved, the upper jacking device works until the displayed numerical value reaches the upper jacking force, the upper jacking device stops working, then the distance between the base and the driven end is measured, and a grinding cushion block is matched and fixed; the upper chain and the lower chain are tensioned on line on the transmission device, and the upper chain and the lower chain are mutually tensioned, so that the transmission effect is stable. Therefore, according to the design, the chain can be tensioned on line, and the transmission effect is stable.

Description

Technical Field

[0001] The invention relates to a chain tensioning method, belonging to the technical field of chain transmission, and in particular to a chain tensioning method of a double-chain transmission device. Background Art

[0002] Chain drive is an important transmission method and is widely used in mechanical equipment in various industries. In order to ensure the stability and transmission capacity of the chain, the chain needs to be tensioned.

[0003] The Chinese patent application number is 202111106792.7, and the application date is September 22, 2021. It discloses a transmission tension force testing system and a testing method for chain assembly and forming, which belongs to the technical field of chain tension force testing, including a processing table, a slider seat is symmetrically slidably connected to the processing table, a sprocket is rotatably connected to the slider seat, an auxiliary track is symmetrically arranged on the slider seat, and a passive auxiliary placement frame corresponding to the sprocket is slidably connected in the auxiliary track, a protective cover is connected to the processing table, a screw member is rotatably connected to the inner side wall of the protective cover, a sliding block is symmetrically connected to the screw member, an arc plate is rotatably connected to the sliding block, a pusher is connected between the inner arc surface of the arc plate and the sliding block, and an arc cover clamp is connected to the outer arc surface of the arc plate. Although this design tensions the chain by moving the sliding seat, and then the tension tester performs tension test on the chain, it still has the following defects: In this design, the chain is tensioned in the sliding seat, so only the chain can be tensioned individually, and the chain is used on the transmission device, and this design cannot tension the chain on the transmission device, so this design cannot tension the chain online.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to ordinary technicians in this field. Summary of the invention

[0005] The purpose of the present invention is to overcome the defects and problems existing in the prior art that the chain cannot be tensioned online, and to provide a chain tensioning method for a double-chain transmission device that can tension the chain online.

[0006] To achieve the above objectives, the technical solution of the present invention is: A chain tensioning method for a double-chain transmission device, wherein the chain comprises an upper chain and a lower chain, and the method comprises the following steps: Step 1: First, calculate the upper chain tension T1 according to the parameters of the upper chain, and then calculate the lower chain tension T2 according to the parameters of the lower chain; Step 2: firstly arrange the upper lifting device on the position located inside the upper chain between the base and the driven end of the device, and then arrange the lower lifting device on the position located inside the lower chain between the base and the driven end of the device; Step 3: First measure the vertical distance L1 between the action point of the lower lifting device and the action point of the upper lifting device, then measure the vertical distance L2 from the action point of the lower chain tensioning force to the action point of the upper lifting device, then measure the vertical distance L3 from the action point of the static friction force f of the driven end to the action point of the upper lifting device, and then measure the vertical distance L4 from the action point of the upper chain tensioning force to the action point of the upper lifting device; Step 4: First, the lifting ends of the upper lifting device and the lower lifting device drive the driven end to move to the right at the same time, and then the driven end moves to gradually tighten the upper chain and the lower chain. At the same time, observe the display readings on the upper lifting device and the lower lifting device. When the display readings reach the initial tension force value, stop the lifting ends of the upper lifting device and the lower lifting device from moving; Step 5: First, obtain the magnitude of the static friction force f generated by the driven end, and then calculate the lower lifting force F2 required when the lower chain is tensioned. At this time, according to the principle of lever, the action point of the upper lifting device is the first fulcrum, and the rightward lifting torque generated by the lower lifting device is equal to the sum of the leftward torque generated by the tension of the lower chain and the torque of the static friction force f generated by the driven end, that is, F2×L1=T2×L3+f×L2, and then calculate the lower lifting force F2; then move the lifting end of the lower lifting device to the right, and when the value displayed by the lower lifting device reaches F2, stop the lifting end of the lower lifting device; Step 6: First calculate the upper lifting force F1 required when the upper chain is tensioned. At this time, according to the principle of lever, the action point of the lower lifting device is used as the second fulcrum. The rightward lifting moment generated by the upper lifting device is equal to the leftward moment generated by the tension of the upper chain, that is, F1×L1=T1×(L1+L4). Then calculate the upper lifting force F1; then move the lifting end of the upper lifting device to the right. When the value displayed by the upper lifting device reaches F1, stop the lifting end of the upper lifting device. Step 7: First measure the distance S1 between the base and the driven end, then adapt the grinding pad of the same length according to the length of S1, then fix the grinding pad between the base and the driven end, and then remove the upper lifting device and the lower lifting device in turn to complete the simultaneous tensioning of the upper chain and the lower chain.

[0007] In the second step, the upper lifting device is arranged on the position located on the inner side of the upper chain between the base and the driven end of the device, and the lower lifting device is arranged on the position located on the inner side of the lower chain between the base and the driven end of the device. The upper lifting device is first arranged on the position located on the inner side of the upper chain between the base and the driven end of the device, and then the fixed end of the upper lifting device is connected to the base, and then the lifting end of the upper lifting device is connected to the driven end, and then the lower lifting device is arranged on the position located on the inner side of the lower chain between the base and the driven end, and then the fixed end of the lower lifting device is connected to the base, and then the lifting end of the lower lifting device is connected to the driven end.

[0008] In the second step, an upper lifting device is first arranged on the position located on the inner side of the upper chain between the base and the driven end of the device, and then the fixed end of the upper lifting device is connected to the base, and then the lifting end of the upper lifting device is connected to the driven end, and then a lower lifting device is arranged on the position located on the inner side of the lower chain between the base and the driven end, and then the fixed end of the lower lifting device is connected to the base, and then the lifting end of the lower lifting device is connected to the driven end. The upper jack is first arranged on the position located on the inner side of the upper chain between the base and the driven end, and then the fixed end of the upper jack is connected to the base, and then the lifting end of the upper jack is connected to the driven end, and then a lower jack is arranged on the position located on the inner side of the lower chain between the base and the driven end, and then the fixed end of the lower jack is connected to the base, and then the lifting end of the lower jack is connected to the driven end.

[0009] In the first step, the upper chain tensioning force T1 is obtained according to the parameters of the upper chain, and the lower chain tensioning force T2 is obtained according to the parameters of the lower chain. The upper chain tensioning force T1 is obtained according to the product of the length of the upper chain and the tension coefficient of the chain end, and the lower chain tensioning force T2 is obtained according to the product of the length of the lower chain and the tension coefficient of the chain end.

[0010] In the first step, the upper chain tension T1 is calculated according to the length of the upper chain and the tension coefficient of the chain end, and the lower chain tension T2 is calculated according to the length of the lower chain and the tension coefficient of the chain end. The upper chain tension T1 is calculated by multiplying the length of the upper chain and a value selected from zero point one to zero point two, and the lower chain tension T2 is calculated by multiplying the length of the lower chain and a value selected from zero point one to zero point two.

[0011] In the fourth step, the display reading reaches the initial tension value when the display reading of the upper lifting device reaches the product of the initial tension coefficient and the upper chain tension T1, and the display reading of the lower lifting device reaches the product of the initial tension coefficient and the lower chain tension T2.

[0012] In the fourth step, the display reading of the upper lifting device reaches the product of the initial tensioning coefficient and the upper chain tensioning force T1, the display reading of the lower lifting device reaches the product of the initial tensioning coefficient and the lower chain tensioning force T2, the display reading reaches the product of zero point three and the upper chain tensioning force T1, and the display reading of the lower lifting device reaches the product of zero point three and the lower chain tensioning force T2.

[0013] In the fifth step, the magnitude of the static friction force f generated by the driven end is obtained by a tension test, that is, the driven end is pulled and the tension is measured at the moment the driven end moves. The tension is the magnitude of the static friction force f.

[0014] In the fifth step, the magnitude of the static friction force f generated by the driven end is obtained by calculating the magnitude of the static friction force f generated by the driven end, that is, by multiplying the gravity of the driven end by the static friction coefficient of the bottom surface of the driven end.

[0015] In the seventh step, fixing the grinding pads between the base and the driven end is to fix the two grinding pads at the same horizontal plane of the upper chain and the lower chain respectively, or to fix the two grinding pads at positions between the base and the driven end close to the upper chain and the lower chain respectively.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. In a chain tensioning method of a double-chain transmission device of the present invention, the chain includes an upper chain and a lower chain, and the method includes the following steps: the first step: firstly obtain the tensioning force T1 of the upper chain and the tensioning force T2 of the lower chain; the second step: fix the upper lifting device and the lower lifting device between the base and the driven end of the device; the third step: firstly measure the distance L1 between the action point of the lower lifting device and the action point of the upper lifting device, then measure the vertical distance L2 from the action point of the lower chain to the action point of the upper lifting device, then measure the vertical distance L3 from the action point of the static friction force f to the action point of the upper lifting device, and then measure the vertical distance L4 from the action point of the upper chain to the action point of the upper lifting device; the fourth step: make the upper lifting device The upper and lower lifting devices are moved to the right at the same time until the displayed reading reaches the initial tensioning force value; the fifth step: according to the lever principle, F2×L1=T2×L3+f×L2 is obtained, and then the lower lifting force F2 is obtained, and then the lower lifting device is moved to the right until the displayed reading reaches F2; ​​the sixth step: according to the lever principle, F1×L1=T1×(L1+L4) is obtained, and then the upper lifting force F1 is obtained, and then the upper lifting device is moved to the right until the displayed reading reaches F1; the seventh step: measure the distance S1 between the base and the driven end, and then fix the grinding pad block with a thickness of S1 between the base and the driven end, so as to complete the tensioning of the upper chain and the lower chain. The advantages of the present invention also include: First point: tension the upper chain and the lower chain on the transmission device, so the upper chain and the lower chain are tensioned online. After tensioning, the upper chain, the lower chain and the transmission device have a better match, which can ensure the transmission effect of the chain in the transmission device; Second point: The upper chain and the lower chain cooperate with each other when they are tensioned, so the upper chain and the lower chain have good coordination, which is conducive to the stability of the transmission effect; Therefore, the present invention can perform online tensioning on the chain, and the transmission effect is stable.

[0017] 2. In the chain tensioning method of a double-chain transmission device of the present invention, in the second step, the upper lifting device is an upper jack, and the lower lifting device is a lower jack. When applied, in the fourth, fifth, and sixth steps, the upper jack and the lower jack lift the driven end. The hydraulic jack has a large supporting force and is relatively stable during operation, so the lifting effect on the driven end is stable and will not cause the driven end to shake. Therefore, the lifting process of the present invention is stable.

[0018] 3. In the chain tensioning method of a double-chain transmission device of the present invention, in the first step, the upper chain tensioning force T1 is the product of the length of the upper chain and the tension coefficient of the chain end, and the lower chain tensioning force T2 is the product of the length of the lower chain and the tension coefficient of the chain end. When applied, the chain is tensioned according to the tensioning force, so the tensioned chain meets the use requirements and can ensure a better transmission effect. Therefore, the chain transmission effect is better after the present invention is applied.

[0019] 4. In the chain tensioning method of a double-chain transmission device of the present invention, in the fourth step, the initial tensioning force value is the product of the upper chain tensioning force T1 and 0.3, and the product of the lower chain tensioning force T2 and 0.3. When applied, the upper chain and the lower chain are firstly given an initial tensioning force. At this time, the upper chain and the lower chain have been preliminarily tensioned, which facilitates the upper chain and the lower chain to cooperate with each other to complete the thorough tensioning after the fifth and sixth steps. Therefore, the chain coordination of the present invention is better.

[0020] 5. In the chain tensioning method of a double-chain transmission device of the present invention, in the fifth step, the magnitude of the static friction force f generated by the driven end is the magnitude of the static friction force f generated by the driven end obtained by tensile test or calculation. When applied, in the fifth step, the static friction force f also generates a leftward torque, so the static friction force f should be taken into account in the calculation to improve the accuracy of the calculated lower lifting force F2, thereby improving the tensioning effect on the chain. Therefore, the accuracy of the present invention is better.

[0021] 6. In the chain tensioning method of a double-chain transmission device of the present invention, in the seventh step, the two grinding pads are respectively fixed at or near the same horizontal plane of the upper chain and the lower chain. When used, the grinding pads are close to the upper chain and the lower chain, so that the best lifting effect of the upper chain and the lower chain can be obtained, and the best tensioning effect of the upper chain and the lower chain can be obtained. Therefore, the tensioning effect of the present invention is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a flow chart of the present invention.

[0023] Figure 2 It is a structural schematic diagram of the present invention.

[0024] Figure 3 yes Figure 2 Top view of the .

[0025] Figure 4 yes Figure 2 Simplified structural diagram.

[0026] Figure 5 yes Figure 4 Schematic diagram of the structure of the driven end.

[0027] Figure 6 It is a force analysis diagram of the present invention.

[0028] Figure 7 yes Figure 6 Enlarged view of the middle and upper lifting device action points.

[0029] Figure 8 yes Figure 6 Enlarged view of the action points of the middle and lower lifting devices.

[0030] In the figure: chain 1, upper chain 11, lower chain 12, device 2, base 21, driven end 22, upper lifting device 3, upper jack 31, lower lifting device 4, lower jack 41. DETAILED DESCRIPTION

[0031] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0032] See also Figure 1 — Figure 8 A chain tensioning method for a double-chain transmission device, wherein the chain 1 comprises an upper chain 11 and a lower chain 12, and the method comprises the following steps: Step 1: firstly obtain the tension T1 of the upper chain 11 according to the parameters of the upper chain 11, and then obtain the tension T2 of the lower chain 12 according to the parameters of the lower chain 12; Step 2: firstly, arrange the upper lifting device 3 on the inner side of the upper chain 11 between the base 21 and the driven end 22 of the device 2, and then arrange the lower lifting device 4 on the inner side of the lower chain 12 between the base 21 and the driven end 22 of the device 2; Step 3: first measure the vertical distance L1 between the action point of the lower lifting device 4 and the action point of the upper lifting device 3, then measure the vertical distance L2 from the action point of the tensioning force of the lower chain 12 to the action point of the upper lifting device 3, then measure the vertical distance L3 from the action point of the static friction force f of the driven end 22 to the action point of the upper lifting device 3, and then measure the vertical distance L4 from the action point of the tensioning force of the upper chain 11 to the action point of the upper lifting device 3; Step 4: First, the lifting ends of the upper lifting device 3 and the lower lifting device 4 simultaneously drive the driven end 22 to move to the right, and then the driven end 22 moves to drive the upper chain 11 and the lower chain 12 to be gradually tightened. At the same time, observe the display readings on the upper lifting device 3 and the lower lifting device 4. When the display readings reach the initial tension force value, stop the lifting ends of the upper lifting device 3 and the lower lifting device 4 from moving; Step 5: First, obtain the magnitude of the static friction force f generated by the driven end 22, and then calculate the lower lifting force F2 required when the lower chain 12 is tensioned. At this time, according to the principle of lever, the action point of the upper lifting device 3 is the first fulcrum, and the rightward lifting torque generated by the lower lifting device 4 is equal to the sum of the leftward torque generated by the tension of the lower chain 12 and the torque of the static friction force f generated by the driven end 22, that is, F2×L1=T2×L3+f×L2, and then calculate the lower lifting force F2; then move the lifting end of the lower lifting device 4 to the right, and when the value displayed by the lower lifting device 4 reaches F2, stop the lifting end of the lower lifting device 4; Step 6: First calculate the upper lifting force F1 required when the upper chain 11 is tensioned. At this time, according to the principle of lever, the action point of the lower lifting device 4 is used as the second fulcrum, and the rightward lifting moment generated by the upper lifting device 3 is equal to the leftward moment generated by the tension of the upper chain 11, that is, F1×L1=T1×(L1+L4), and then calculate the upper lifting force F1; then move the lifting end of the upper lifting device 3 to the right, and when the value displayed by the upper lifting device 3 reaches F1, stop the lifting end of the upper lifting device 3; Step 7: first measure the distance S1 between the base 21 and the driven end 22, then adapt a grinding pad of the same length according to the length of S1, then fix the grinding pad between the base 21 and the driven end 22, and then remove the upper lifting device 3 and the lower lifting device 4 in turn to complete the simultaneous tensioning of the upper chain 11 and the lower chain 12.

[0033] In the second step, the upper lifting device 3 is arranged on the position located inside the upper chain 11 between the base 21 and the driven end 22 of the device 2, and the lower lifting device 4 is arranged on the position located inside the lower chain 12 between the base 21 and the driven end 22 of the device 2. The upper lifting device 3 is first arranged on the position located inside the upper chain 11 between the base 21 and the driven end 22 of the device 2, and then the fixed end of the upper lifting device 3 is connected to the base 21, and then the lifting end of the upper lifting device 3 is connected to the driven end 22, and then the lower lifting device 4 is arranged on the position located inside the lower chain 12 between the base 21 and the driven end 22, and then the fixed end of the lower lifting device 4 is connected to the base 21, and then the lifting end of the lower lifting device 4 is connected to the driven end 22.

[0034] In the second step, the upper lifting device 3 is first arranged on the part located inside the upper chain 11 between the base 21 and the driven end 22 of the device 2, and then the fixed end of the upper lifting device 3 is connected to the base 21, and then the lifting end of the upper lifting device 3 is connected to the driven end 22, and then the lower lifting device 4 is arranged on the part located inside the lower chain 12 between the base 21 and the driven end 22, and then the fixed end of the lower lifting device 4 is connected to the base 21, and then the lifting end of the lower lifting device 4 is connected to the driven end 22. The moving end 22 is connected by first arranging the upper jack 31 on the inner side of the upper chain 11 between the base 21 and the driven end 22, then connecting the fixed end of the upper jack 31 to the base 21, and then connecting the lifting end of the upper jack 31 to the driven end 22, and then arranging the lower jack 41 on the inner side of the lower chain 12 between the base 21 and the driven end 22, and then connecting the fixed end of the lower jack 41 to the base 21, and then connecting the lifting end of the lower jack 41 to the driven end 22.

[0035] In the first step, the tensioning force T1 of the upper chain 11 is obtained according to the parameters of the upper chain 11, and the tensioning force T2 of the lower chain 12 is obtained according to the parameters of the lower chain 12. The tensioning force T1 of the upper chain 11 is obtained according to the product of the length of the upper chain 11 and the tension coefficient of the chain end, and the tensioning force T2 of the lower chain 12 is obtained according to the product of the length of the lower chain 12 and the tension coefficient of the chain end.

[0036] In the first step, the tensioning force T1 of the upper chain 11 is calculated according to the length of the upper chain 11 and the tension coefficient of the chain end, and the tensioning force T2 of the lower chain 12 is calculated according to the length of the lower chain 12 and the tension coefficient of the chain end. The tensioning force T1 of the upper chain 11 is calculated by multiplying the length of the upper chain 11 by a value selected from zero point one to zero point two, and the tensioning force T2 of the lower chain 12 is calculated by multiplying the length of the lower chain 12 by a value selected from zero point one to zero point two.

[0037] In the fourth step, the display reading reaches the initial tension value when the display reading of the upper lifting device 3 reaches the product of the initial tension coefficient and the tension T1 of the upper chain 11, and the display reading of the lower lifting device 4 reaches the product of the initial tension coefficient and the tension T2 of the lower chain 12.

[0038] In the fourth step, the display reading of the upper lifting device 3 reaches the product of the initial tensioning coefficient and the tensioning force T1 of the upper chain 11, and the display reading of the lower lifting device 4 reaches the product of the initial tensioning coefficient and the tensioning force T2 of the lower chain 12. The display reading reaches the product of zero point three and the tensioning force T1 of the upper chain 11, and the display reading of the lower lifting device 4 reaches the product of zero point three and the tensioning force T2 of the lower chain 12.

[0039] In the fifth step, the magnitude of the static friction force f generated by the driven end 22 is obtained by a tensile test, that is, the driven end 22 is pulled and the magnitude of the tensile force is measured at the moment the driven end 22 moves. The tensile force is the magnitude of the static friction force f.

[0040] In the fifth step, the magnitude of the static friction force f generated by the driven end 22 is obtained by calculation, that is, by multiplying the gravity of the driven end 22 by the static friction coefficient of the bottom surface of the driven end 22 .

[0041] In the seventh step, fixing the grinding pads between the base 21 and the driven end 22 is to fix the two grinding pads at the same horizontal plane of the upper chain 11 and the lower chain 12, or to fix the two grinding pads between the base 21 and the driven end 22, close to the upper chain 11 and the lower chain 12.

[0042] The supplementary description of the present invention is as follows: The double-chain transmission device described in the present invention refers to: a device 2 that transmits power through two chains 1, such as an upper chain 11 and a lower chain 12; wherein the upper chain 11 and the lower chain 12 are located on both sides of the device 2, and the axes of the upper chain 11 and the lower chain 12 are parallel to each other, and the sprockets of the upper chain 11 and the lower chain 12 are located in the same plane.

[0043] Embodiment 1: See also Figure 1 — Figure 8 A chain tensioning method for a double-chain transmission device, wherein the chain 1 comprises an upper chain 11 and a lower chain 12, and the method comprises the following steps: Step 1: firstly obtain the tension T1 of the upper chain 11 according to the parameters of the upper chain 11, and then obtain the tension T2 of the lower chain 12 according to the parameters of the lower chain 12; Step 2: firstly, arrange the upper lifting device 3 on the inner side of the upper chain 11 between the base 21 and the driven end 22 of the device 2, and then arrange the lower lifting device 4 on the inner side of the lower chain 12 between the base 21 and the driven end 22 of the device 2; Step 3: first measure the vertical distance L1 between the action point of the lower lifting device 4 and the action point of the upper lifting device 3, then measure the vertical distance L2 from the action point of the tensioning force of the lower chain 12 to the action point of the upper lifting device 3, then measure the vertical distance L3 from the action point of the static friction force f of the driven end 22 to the action point of the upper lifting device 3, and then measure the vertical distance L4 from the action point of the tensioning force of the upper chain 11 to the action point of the upper lifting device 3; Step 4: First, the lifting ends of the upper lifting device 3 and the lower lifting device 4 simultaneously drive the driven end 22 to move to the right, and then the driven end 22 moves to drive the upper chain 11 and the lower chain 12 to be gradually tightened. At the same time, observe the display readings on the upper lifting device 3 and the lower lifting device 4. When the display readings reach the initial tension force value, stop the lifting ends of the upper lifting device 3 and the lower lifting device 4 from moving; Step 5: First, obtain the magnitude of the static friction force f generated by the driven end 22, and then calculate the lower lifting force F2 required when the lower chain 12 is tensioned. At this time, according to the principle of lever, the action point of the upper lifting device 3 is the first fulcrum, and the rightward lifting torque generated by the lower lifting device 4 is equal to the sum of the leftward torque generated by the tension of the lower chain 12 and the torque of the static friction force f generated by the driven end 22, that is, F2×L1=T2×L3+f×L2, and then calculate the lower lifting force F2; then move the lifting end of the lower lifting device 4 to the right, and when the value displayed by the lower lifting device 4 reaches F2, stop the lifting end of the lower lifting device 4; Step 6: First calculate the upper lifting force F1 required when the upper chain 11 is tensioned. At this time, according to the principle of lever, the action point of the lower lifting device 4 is used as the second fulcrum, and the rightward lifting moment generated by the upper lifting device 3 is equal to the leftward moment generated by the tension of the upper chain 11, that is, F1×L1=T1×(L1+L4), and then calculate the upper lifting force F1; then move the lifting end of the upper lifting device 3 to the right, and when the value displayed by the upper lifting device 3 reaches F1, stop the lifting end of the upper lifting device 3; Step 7: first measure the distance S1 between the base 21 and the driven end 22, then adapt a grinding pad of the same length according to the length of S1, then fix the grinding pad between the base 21 and the driven end 22, and then remove the upper lifting device 3 and the lower lifting device 4 in turn to complete the simultaneous tensioning of the upper chain 11 and the lower chain 12.

[0044] Embodiment 2: The basic content is the same as that of Example 1, except that: See also Figure 1— Figure 5 In the second step, the upper lifting device 3 is arranged on the position located inside the upper chain 11 between the base 21 and the driven end 22 of the device 2, and the lower lifting device 4 is arranged on the position located inside the lower chain 12 between the base 21 and the driven end 22 of the device 2. The upper lifting device 3 is first arranged on the position located inside the upper chain 11 between the base 21 and the driven end 22 of the device 2, and then the fixed end of the upper lifting device 3 is connected to the base 21, and then the lifting end of the upper lifting device 3 is connected to the driven end 22, and then the lower lifting device 4 is arranged on the position located inside the lower chain 12 between the base 21 and the driven end 22, and then the fixed end of the lower lifting device 4 is connected to the base 21, and then the lifting end of the lower lifting device 4 is connected to the driven end 22. In the second step, the upper lifting device 3 is first arranged on the part located inside the upper chain 11 between the base 21 and the driven end 22 of the device 2, and then the fixed end of the upper lifting device 3 is connected to the base 21, and then the lifting end of the upper lifting device 3 is connected to the driven end 22, and then the lower lifting device 4 is arranged on the part located inside the lower chain 12 between the base 21 and the driven end 22, and then the fixed end of the lower lifting device 4 is connected to the base 21, and then the lifting end of the lower lifting device 4 is connected to the driven end 22. The moving end 22 is connected by first arranging the upper jack 31 on the inner side of the upper chain 11 between the base 21 and the driven end 22, then connecting the fixed end of the upper jack 31 to the base 21, and then connecting the lifting end of the upper jack 31 to the driven end 22, and then arranging the lower jack 41 on the inner side of the lower chain 12 between the base 21 and the driven end 22, and then connecting the fixed end of the lower jack 41 to the base 21, and then connecting the lifting end of the lower jack 41 to the driven end 22.

[0045] When applied, in the second step, first, the fixed end of the upper jack 31 is connected and fixed to the base 21 on the inner side of the upper chain 11, and then the lifting end of the upper jack 31 is connected and fixed to the driven end 22, that is, the upper jack 31 is arranged, so the lifting end of the upper jack 31 can push the driven end 22 to move to the right; then, the fixed end of the lower jack 41 is connected to the base 21, and then the lifting end of the lower jack 41 is connected to the driven end 22, that is, the lower jack 41 is arranged, so the lifting end of the lower jack 41 can push the driven end 22 to move to the right.

[0046] Embodiment 3: The basic content is the same as that of Example 1, except that: See also Figure 1 — Figure 8, in the first step, the tension T1 of the upper chain 11 is obtained according to the parameters of the upper chain 11, and the tension T2 of the lower chain 12 is obtained according to the parameters of the lower chain 12, which is to obtain the tension T1 of the upper chain 11 according to the product of the length of the upper chain 11 and the tension coefficient of the chain end, and then to obtain the tension T2 of the lower chain 12 according to the product of the length of the lower chain 12 and the tension coefficient of the chain end. In the first step, the tension T1 of the upper chain 11 is obtained according to the length of the upper chain 11 and the tension coefficient of the chain end, and then the tension T2 of the lower chain 12 is obtained according to the length of the lower chain 12 and the tension coefficient of the chain end, which is to obtain the tension T1 of the upper chain 11 according to the product of the length of the upper chain 11 and the value selected from 0.1 to 0.2, and then to obtain the tension T2 of the lower chain 12 according to the product of the length of the lower chain 12 and the value selected from 0.1 to 0.2.

[0047] When applied, in the first step, first multiply the length of the upper chain 11 by the chain end tension coefficient to obtain the upper chain 11 tensioning force T1, and then multiply the length of the lower chain 12 by the chain end tension coefficient to obtain the lower chain 12 tensioning force T2; the upper chain 11 tensioning force T1 and the lower chain 12 tensioning force T2 can be obtained to cooperate with the fourth step and the fifth step; the chain end tension coefficient generally takes a value between 0.1 and 0.2, and can also be set as needed.

[0048] Embodiment 4: The basic content is the same as that of Example 1, except that: See also Figure 1 — Figure 8 , in the fourth step, the display reading reaches the initial tension value when the display reading of the upper jacking device 3 reaches the product of the initial tension coefficient and the tension T1 of the upper chain 11, and the display reading of the lower jacking device 4 reaches the product of the initial tension coefficient and the tension T2 of the lower chain 12. In the fourth step, the display reading of the upper jacking device 3 reaches the product of the initial tension coefficient and the tension T1 of the upper chain 11, and the display reading of the lower jacking device 4 reaches the product of the initial tension coefficient and the tension T2 of the lower chain 12. The display reading reaches the product of zero point three and the tension T1 of the upper chain 11, and the display reading of the lower jacking device 4 reaches the product of zero point three and the tension T2 of the lower chain 12.

[0049] When applied, in the fourth step, when the display reading of the upper lifting device 3 reaches the product of the initial tensioning coefficient and the tensioning force T1 of the upper chain 11, it means that the upper chain 11 has been preliminarily tensioned, and when the display reading of the lower lifting device 4 reaches the product of the initial tensioning coefficient and the tensioning force T2 of the lower chain 12, it means that the lower chain 12 has been preliminarily tensioned. At this time, the fifth step can be performed; the initial tensioning coefficient is generally 0.3, and can also be set as needed.

[0050] Embodiment 5: The basic content is the same as that of Example 1, except that: See also Figure 1 — Figure 8 In the fifth step, the magnitude of the static friction force f generated by the driven end 22 is obtained by a tensile test, that is, the driven end 22 is pulled, and the magnitude of the tensile force is measured at the moment when the driven end 22 moves. The tensile force is the magnitude of the static friction force f. In the fifth step, the magnitude of the static friction force f generated by the driven end 22 is obtained by calculation, that is, by multiplying the gravity of the driven end 22 by the static friction coefficient of the bottom surface of the driven end 22.

[0051] When used, the magnitude of the static friction force f is obtained through a tension test or calculation, thereby removing the influence of the static friction force f on the lower lifting force F2, so that the calculated value of the lower lifting force F2 is more accurate, thereby improving the tensioning effect of the present invention.

[0052] Embodiment 6: The basic content is the same as that of Example 1, except that: See also Figure 1 — Figure 5 In the seventh step, fixing the grinding pads between the base 21 and the driven end 22 is to fix the two grinding pads at the same horizontal plane of the upper chain 11 and the lower chain 12, or to fix the two grinding pads at positions between the base 21 and the driven end 22 close to the upper chain 11 and the lower chain 12, respectively.

[0053] When applied, in the seventh step, after measuring the distance S1 between the base 21 and the driven end 22, a grinding pad with a length of S1 is adapted, and then the two grinding pads are respectively fixed at the same horizontal plane position of the upper chain 11 and the lower chain 12. However, sometimes the structure of the device 2 will cause the grinding pads to be unable to be fixed at the same horizontal plane position of the upper chain 11 and the lower chain 12. At this time, the two grinding pads are respectively fixed at the position between the base 21 and the driven end 22 close to the upper chain 11 and the lower chain 12.

[0054] The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiment. Any equivalent modifications or changes made by ordinary technicians in this field based on the contents disclosed by the present invention should be included in the protection scope recorded in the claims.

Claims

1. A chain tensioning method for a double-chain transmission device, characterized in that: The chain (1) comprises an upper chain (11) and a lower chain (12), and the method comprises the following steps: The first step: firstly, the tension force T1 of the upper chain (11) is calculated according to the parameters of the upper chain (11), and then the tension force T2 of the lower chain (12) is calculated according to the parameters of the lower chain (12); Step 2: firstly, an upper lifting device (3) is arranged on a portion located inside the upper chain (11) between the base (21) and the driven end (22) of the device (2), and then a lower lifting device (4) is arranged on a portion located inside the lower chain (12) between the base (21) and the driven end (22) of the device (2); Step 3: first measure the vertical distance L1 between the action point of the lower lifting device (4) and the action point of the upper lifting device (3), then measure the vertical distance L2 from the action point of the tensioning force of the lower chain (12) to the action point of the upper lifting device (3), then measure the vertical distance L3 from the action point of the static friction force f of the driven end (22) to the action point of the upper lifting device (3), and then measure the vertical distance L4 from the action point of the tensioning force of the upper chain (11) to the action point of the upper lifting device (3); Step 4: First, the lifting ends of the upper lifting device (3) and the lifting ends of the lower lifting device (4) are simultaneously driven to move the driven end (22) to the right, and then the driven end (22) is moved to drive the upper chain (11) and the lower chain (12) to be gradually tightened. At the same time, the display readings on the upper lifting device (3) and the lower lifting device (4) are observed. When the display readings reach the initial tension value, the lifting ends of the upper lifting device (3) and the lower lifting device (4) are stopped from moving; Step 5: first obtain the magnitude of the static friction force f generated by the driven end (22), and then calculate the lower lifting force F2 required when the lower chain (12) is tensioned. At this time, according to the principle of lever, the action point of the upper lifting device (3) is the first fulcrum, and the rightward lifting torque generated by the lower lifting device (4) is equal to the sum of the leftward torque generated by the tension of the lower chain (12) and the torque of the static friction force f generated by the driven end (22), that is, F2×L1=T2×L3+f×L2, and then calculate the lower lifting force F2; then move the lifting end of the lower lifting device (4) to the right, and when the value displayed by the lower lifting device (4) reaches F2, stop the lifting end of the lower lifting device (4); Step 6: First, calculate the upper lifting force F1 required when the upper chain (11) is tensioned. At this time, according to the principle of lever, the point of action of the lower lifting device (4) is used as the second fulcrum. The rightward lifting moment generated by the upper lifting device (3) is equal to the leftward moment generated by the tension of the upper chain (11), that is, F1×L1=T1×(L1+L4). Then, calculate the upper lifting force F1. Then, move the lifting end of the upper lifting device (3) to the right. When the value displayed by the upper lifting device (3) reaches F1, stop the lifting end of the upper lifting device (3). Step 7: First, measure the distance S1 between the base (21) and the driven end (22), and then adapt a grinding pad of the same length according to the length of S1, and then fix the grinding pad between the base (21) and the driven end (22), and then remove the upper lifting device (3) and the lower lifting device (4) in turn, so that the upper chain (11) and the lower chain (12) can be tensioned simultaneously.

2. A chain tensioning method for a double-chain transmission device according to claim 1, characterized in that: In the second step, the upper lifting device (3) is arranged on a portion located inside the upper chain (11) between the base (21) and the driven end (22) of the device (2), and the lower lifting device (4) is arranged on a portion located inside the lower chain (12) between the base (21) and the driven end (22) of the device (2). The upper lifting device (3) is arranged on a portion located inside the upper chain (11) between the base (21) and the driven end (22) of the device (2). The upper lifting device (3) is provided, the fixed end of the upper lifting device (3) is connected to the base (21), the lifting end of the upper lifting device (3) is connected to the driven end (22), the lower lifting device (4) is arranged on the inner side of the lower chain (12) between the base (21) and the driven end (22), the fixed end of the lower lifting device (4) is connected to the base (21), and the lifting end of the lower lifting device (4) is connected to the driven end (22).

3. A chain tensioning method for a double-chain transmission device according to claim 2, characterized in that: In the second step, the upper lifting device (3) is first arranged on a portion located inside the upper chain (11) between the base (21) and the driven end (22) of the device (2), and then the fixed end of the upper lifting device (3) is connected to the base (21), and then the lifting end of the upper lifting device (3) is connected to the driven end (22), and then the lower lifting device (4) is arranged on a portion located inside the lower chain (12) between the base (21) and the driven end (22), and then the fixed end of the lower lifting device (4) is connected to the base (21), and then the lifting end of the lower lifting device (4) is connected to the driven end (22). The upper jack (31) is firstly arranged on a portion located inside the upper chain (11) between the base (21) and the driven end (22), and then the fixed end of the upper jack (31) is connected to the base (21), and then the lifting end of the upper jack (31) is connected to the driven end (22), and then the lower jack (41) is arranged on a portion located inside the lower chain (12) between the base (21) and the driven end (22), and then the fixed end of the lower jack (41) is connected to the base (21), and then the lifting end of the lower jack (41) is connected to the driven end (22).

4. A chain tensioning method for a double-chain transmission device according to claim 1, characterized in that: In the first step, the tensioning force T1 of the upper chain (11) is obtained according to the parameters of the upper chain (11), and the tensioning force T2 of the lower chain (12) is obtained according to the parameters of the lower chain (12). The tensioning force T1 of the upper chain (11) is obtained according to the product of the length of the upper chain (11) and the tension coefficient of the chain end, and the tensioning force T2 of the lower chain (12) is obtained according to the product of the length of the lower chain (12) and the tension coefficient of the chain end.

5. A chain tensioning method for a double-chain transmission device according to claim 4, characterized in that: In the first step, the tensioning force T1 of the upper chain (11) is obtained according to the length of the upper chain (11) and the tension coefficient of the chain end, and the tensioning force T2 of the lower chain (12) is obtained according to the length of the lower chain (12) and the tension coefficient of the chain end. The tensioning force T1 of the upper chain (11) is obtained according to the product of the length of the upper chain (11) and a value selected from 0.1 to 0.2, and the tensioning force T2 of the lower chain (12) is obtained according to the product of the length of the lower chain (12) and a value selected from 0.1 to 0.

2.

6. A chain tensioning method for a double-chain transmission device according to claim 1, characterized in that: In the fourth step, the display reading reaches the initial tension value when the display reading of the upper lifting device (3) reaches the product of the initial tension coefficient and the tension T1 of the upper chain (11), and the display reading of the lower lifting device (4) reaches the product of the initial tension coefficient and the tension T2 of the lower chain (12).

7. A chain tensioning method for a double-chain transmission device according to claim 6, characterized in that: In the fourth step, the display reading of the upper lifting device (3) reaches the product of the initial tension coefficient and the tension force T1 of the upper chain (11), the display reading of the lower lifting device (4) reaches the product of the initial tension coefficient and the tension force T2 of the lower chain (12), the display reading reaches the product of zero point three and the tension force T1 of the upper chain (11), and the display reading of the lower lifting device (4) reaches the product of zero point three and the tension force T2 of the lower chain (12).

8. The chain tensioning method of a double-chain transmission device according to claim 1, characterized in that: In the fifth step, the magnitude of the static friction force f generated by the driven end (22) is obtained by a tension test, that is, the driven end (22) is pulled and the magnitude of the tension is measured at the moment when the driven end (22) moves. The tension is the magnitude of the static friction force f.

9. A chain tensioning method for a double-chain transmission device according to claim 1, characterized in that: In the fifth step, the magnitude of the static friction force f generated by the driven end (22) is obtained by calculating the magnitude of the static friction force f generated by the driven end (22), that is, by multiplying the gravity of the driven end (22) by the static friction coefficient of the bottom surface of the driven end (22).

10. The chain tensioning method of a double-chain transmission device according to claim 1, characterized in that: In the seventh step, the step of fixing the grinding pads between the base (21) and the driven end (22) is to fix the two grinding pads respectively at the same horizontal plane position of the upper chain (11) and the lower chain (12), or to fix the two grinding pads respectively at the position between the base (21) and the driven end (22) close to the upper chain (11) and the lower chain (12).

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