A method and system for measuring the load distribution of a traction machine

Abstract

The application relates to the elevator technology field and discloses a traction machine unbalance load measuring method and system, the traction machine unbalance load measuring method comprising the following steps: when the traction machine is in an inoperative state, making a first gap between a first electromagnet and a first weighing induction switch equal to a second gap between a second electromagnet and a second weighing induction switch; and measuring a first compression value of a shock pad; making the traction machine in an operative state, measuring a first induction voltage of the first weighing induction switch and a second induction voltage of the second weighing induction switch; and measuring a second compression value of the shock pad; and according to the first compression value and the second compression value of the shock pad and the difference between the first induction voltage and the second induction voltage, the unbalance load condition of the traction machine is obtained. The application has the advantages that the unbalance load condition of the traction machine is indirectly obtained through the difference between the induction voltages of the first weighing induction switch and the second weighing induction switch and the compression amount of the shock pad, the precision is high, the cost is low, the measurement is convenient, and the noise is small.

Description

TECHNICAL FIELD

[0001] The present application relates to the elevator technical field, especially a kind of traction machine partial load measurement method and system. BACKGROUND

[0002] Common elevator mainly includes car, counterweight, traction machine and traction rope, traction machine is arranged in machine room, traction rope is wound on the traction machine, and one end of traction rope is connected with car, the other end of traction rope is connected with counterweight, traction machine controls car and counterweight to lift in hoistway by traction rope, realizes vertical transport passenger or goods, the weight of passenger or goods in car is changeable, traction machine inevitably exists partial load, and traction machine partial load can make bearing wear seriously, noise is big, even appear the situation of traction machine overturn.

[0003] The existing traction machine partial load measurement is generally judged by the tightness of traction rope, or the weighing switch is arranged on the end close to car and the end close to counterweight of traction rope to directly measure, and the harmful influence of partial load is reduced according to experience.The measurement method is high in cost and inaccurate.In addition, traction machine is generally installed on the load-bearing beam at the top of hoistway through mounting seat, in order to facilitate manufacturing and processing, the existing traction machine mounting seat is rigid, vibration and noise are big in use process, and the comfort of passenger is affected. SUMMARY

[0004] In view of the above problems in the prior art, the technical problems to be solved by the present application are to provide a traction machine partial load measurement method and system which indirectly measures, is high in precision, low in cost, convenient to measure and small in noise.

[0005] The technical scheme adopted by the present application to solve the technical problems is to provide a traction machine partial load measurement method, applied to traction machine partial load measurement system, the traction machine partial load measurement system comprises:

[0006] Traction machine, mounting seat, first weighing induction switch, first electromagnet, second weighing induction switch and second electromagnet.

[0007] The installation seat comprises an upper main plate, a lower main plate and a shock pad, the upper main plate and the lower main plate are arranged in a spaced manner, the shock pad is arranged between the upper main plate and the lower main plate, and the upper and lower ends of the shock pad are respectively abutted against the upper main plate and the lower main plate, and the upper main plate can compress the shock pad downward; the traction machine is arranged on the upper main plate, the first electromagnet and the second electromagnet are both arranged on the upper main plate and are respectively located on the two sides of the traction machine, the first weight sensing switch and the second weight sensing switch are both arranged on the lower main plate, the first weight sensing switch is located below the first electromagnet, and the second weight sensing switch is located below the second electromagnet; the first electromagnet and the first weight sensing switch have a first gap m, and the second electromagnet and the second weight sensing switch have a second gap n;

[0008] The traction machine unbalance load measurement method comprises the following steps:

[0009] When the traction machine is in an unworking state, the first gap m between the first electromagnet and the first weight sensing switch is equal to the second gap n between the second electromagnet and the second weight sensing switch, and a first compression value of the shock pad is measured;

[0010] When the traction machine is in a working state, a first sensing voltage of the first weight sensing switch and a second sensing voltage of the second weight sensing switch are measured, and a second compression value of the shock pad is measured;

[0011] According to the first compression value and the second compression value of the shock pad and the difference between the first sensing voltage and the second sensing voltage, the unbalance load condition of the traction machine is obtained.

[0012] Further, the heights of the first weight sensing switch and the second weight sensing switch relative to the lower main plate are adjustable to respectively adjust the first gap m and the second gap n.

[0013] Further, the outer periphery of the first weight sensing switch and the second weight sensing switch is provided with an external thread, and the first weight sensing switch is fixed on the lower main plate through two first fixing nuts, the two first fixing nuts are respectively abutted against the upper and lower sides of the lower main plate and are in threaded connection with the first weight sensing switch;

[0014] The second weight sensing switch is fixed on the lower main plate through two second fixing nuts, the two second fixing nuts are respectively abutted against the upper and lower sides of the lower main plate and are in threaded connection with the second weight sensing switch.

[0015] Further, the load condition of the traction machine is adjusted according to the obtained traction machine unbalance condition.

[0016] Further, a traction rope is arranged on the traction machine, and one end of the traction rope close to the first load sensing switch is connected with the car, and one end of the traction rope close to the second load sensing switch is connected with the counterweight.

[0017] The traction machine is operated, and when the first gap m is smaller than the second gap n, the balance block is added on the counterweight; and when the first gap m is larger than the second gap n, the balance block is added on the car.

[0018] Further, a connecting bolt is arranged between the upper main plate and the lower main plate, a limiting nut is arranged on the connecting bolt, the limiting nut is between the upper main plate and the lower main plate, and the upper main plate can be pressed downward on the limiting nut.

[0019] Further, when the traction machine is in an inoperative state, the distance between the limiting nut and the upper main plate is smaller than the first gap m and the second gap n.

[0020] Further, the connecting bolt is fixed on the lower main plate through two second fixing nuts, the two second fixing nuts are respectively arranged on the upper side and the lower side of the lower main plate and are in threaded connection with the connecting bolt.

[0021] The locking nut is also in threaded connection with the connecting bolt.

[0022] Further, the lower end of the damping pad is detachably fixedly connected to the lower main plate through a first bolt.

[0023] The upper end of the damping pad is detachably fixedly connected to the upper main plate through a second bolt.

[0024] The technical solution adopted by the present application to solve the technical problems is that a traction machine unbalance measuring system is further provided, which comprises:

[0025] A mounting seat, the mounting seat comprises an upper main plate, a lower main plate and a damping pad, the upper main plate and the lower main plate are arranged in a spaced manner, the damping pad is arranged between the upper main plate and the lower main plate, and the upper end and the lower end of the damping pad are respectively in abutment with the upper main plate and the lower main plate, and the upper main plate can compress the damping pad downward.

[0026] A traction machine is arranged on the mounting seat and is fixedly connected with the mounting seat.

[0027] The first weighing induction switch, the first electromagnet, the second weighing induction switch and the second electromagnet are arranged on the upper main plate, and are respectively arranged on two sides of the traction machine, the first weighing induction switch and the second weighing induction switch are arranged on the lower main plate, and the first weighing induction switch is arranged below the first electromagnet, and the second weighing induction switch is arranged below the second electromagnet, the first electromagnet and the first weighing induction switch have a first gap, and the second electromagnet and the second weighing induction switch have a second gap.

[0028] The connecting bolt is arranged in the upper main plate and the lower main plate, and the connecting bolt is provided with a limiting nut, the limiting nut is threadedly connected with the connecting bolt, and the limiting nut is arranged between the upper main plate and the lower main plate, and the upper main plate can move downwards and abut against the limiting nut.

[0029] Compared with the prior art, the present application has at least the following beneficial effects:

[0030] In the present application, the damping pad is arranged between the upper main plate and the lower main plate, so that the mounting seat is a flexible mounting seat, the traction machine generates vibration during operation, the damping pad is compressed, the vibration can be absorbed, and the noise can be reduced. The first electromagnet and the first weighing induction switch are arranged on one side of the traction machine, the second electromagnet and the second weighing induction switch are arranged on the other side of the traction machine, and the distance between the first electromagnet and the first weighing induction switch is different from the distance between the second electromagnet and the second weighing induction switch when the traction machine is in an unbalanced load state. Further, the induced voltages on the first weighing induction switch and the second weighing induction switch are different, and the unbalanced load condition of the traction machine can be obtained according to the difference between the induced voltages and the compression condition of the damping pad. The unbalanced load condition of the traction machine is indirectly obtained through the two induced voltages and the compression condition of the damping pad, which is simple in operation, low in cost and high in measurement accuracy. According to the obtained unbalanced load condition, the compensation direction of the torque can be controlled to make the car and the counterweight run as smoothly as possible to improve the riding comfort of passengers. In the present application, only the first electromagnet and the second electromagnet need to be installed on the upper main plate, and the first weighing induction switch and the second weighing induction switch need to be installed on the lower main plate, without the need to operate the traction rope. The traction machine can be conveniently disassembled and assembled, and the unbalanced load condition of the traction machine can be monitored in real time, or the unbalanced load of the traction machine can be monitored only during testing.

[0031] In this invention, a connecting bolt is provided between the upper and lower mainboards. An adjustable limiting nut is installed on the connecting bolt. The limiting nut restricts the maximum downward movement of the upper mainboard, preventing it from moving too far downward and crushing the shock-absorbing pad. The limiting nut also prevents the upper mainboard from moving too far downward and damaging the first and second weighing sensors. A vibration-damping rubber ring is fitted onto the connecting nut. The vibration-damping rubber ring flexibly collides with the upper mainboard, also absorbing vibration and reducing noise, thus improving passenger comfort. Attached Figure Description

[0032] Figure 1 This is a schematic diagram of the traction machine off-center load measurement system of the present invention;

[0033] Figure 2 A schematic diagram of the traction machine mounted on the mounting base;

[0034] Figure 3 This is a schematic diagram showing the distribution of the shock-absorbing pads in the mounting base;

[0035] Figure 4 This is a schematic diagram of the compression of the shock-absorbing pads when the traction machine is not in operation;

[0036] Figure 5 for Figure 4 A magnified view of a section at point A in the middle;

[0037] Figure 6 for Figure 4 A schematic diagram of the structure when the middle damping pad is compressed to its maximum value.

[0038] In the picture:

[0039] 1. Mounting bracket; 11. Upper motherboard; 12. Lower motherboard; 13. Shock-absorbing pad; 110. Bottom cover;

[0040] 2. Traction machine;

[0041] 3. First weighing sensor switch; 34. First fixing nut; 350. External thread;

[0042] 4. The first electromagnet;

[0043] 5. Second weighing sensor switch; 56. Second fixing nut;

[0044] 6. The second electromagnet;

[0045] 7. Traction rope;

[0046] 8. Connecting bolts; 80. Limiting nut; 81. Third fixing nut; 82. Locking nut; 83. Vibration damping rubber ring;

[0047] 9. Load-bearing beams. Detailed Implementation

[0048] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0049] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0050] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0051] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0052] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0053] Example 1:

[0054] like Figures 1-6 As shown, a traction machine off-center load measurement system can indirectly determine the off-center load of the traction machine, thereby enabling the elevator control system to control torque replenishment to reduce the off-center load of the traction machine 2 and improve passenger comfort. The traction machine off-center load measurement system in this embodiment mainly includes: a mounting base 1, a traction machine 2, a first weighing induction switch 3, a first electromagnet 4, a second weighing induction switch 5, a second electromagnet 6, a traction rope 7, and connecting bolts 8.

[0055] The mounting base 1 comprises an upper main plate 11, a lower main plate 12 and a shock pad 13, the upper main plate 11 and the lower main plate 12 are arranged in a spaced manner, the shock pad 13 is arranged between the upper main plate 11 and the lower main plate 12, and the upper and lower ends of the shock pad 13 are respectively abutted with the upper main plate 11 and the lower main plate 12, and the upper main plate 11 can compress the shock pad 13 downward. A plurality of shock pads 13 are arranged between the upper main plate 11 and the lower main plate 12, which needs to be explained that the shock pad 13 can be connected with the lower main plate 12 only, and only abutted with the upper main plate 11, for example: the lower end of the shock pad 13 is detachably fixedly connected on the lower main plate 12 through a first bolt. It can also be that the shock pad 13 is connected with the lower main plate 12 through a first bolt and connected with the upper main plate 11 through a second bolt, which is the optimal scheme. Or the shock pad 13 is connected with the upper main plate 11 through the second bolt only, and not connected with the lower main plate 12.

[0056] In actual use, the shock pad 13 is arranged between the upper main plate 11 and the lower main plate 12 in the embodiment, the upper end of the shock pad 13 is abutted on the upper main plate 11, the lower end of the shock pad 13 is abutted on the lower main plate 12, when the traction machine 2 generates vibration in the working process, the upper main plate 11 will compress the shock pad 13 downward, the shock pad 13 will absorb the vibration, and rigid collision between the main machine and the mounting base 1 is avoided, which can effectively reduce the noise and improve the riding comfort of passengers.

[0057] The traction machine 2 is arranged on the mounting base 1 and fixedly connected with the mounting base 1. Specifically, after the traction machine 2 is installed on the upper main plate 11, it is detachably fixedly connected on the upper main plate 11 through a bolt, which is convenient to disassemble and assemble. The width of the lower main plate 12 is greater than that of the upper main plate 11, and the lower main plate 12 needs to be arranged on the load-bearing beam 9 of the elevator shaft in use.

[0058] As Figures 1-2As shown, a connecting bolt 8 is arranged between the upper host board 11 and the lower host board 12, a limiting nut 80 is arranged on the connecting bolt 8, and the limiting nut 80 is between the upper host board 11 and the lower host board 12. The limiting nut 80 is threadedly connected with the connecting bolt 8, so that the limiting nut 80 can move up and down relative to the connecting bolt 8, the limiting position of the limiting nut 80 is adjusted, a locking nut 82 is arranged below the limiting nut 80, the locking nut 82 locks the limiting nut 80, and the limiting nut 80 is prevented from moving downward. That is, after the limiting position of the limiting nut 80 is adjusted, the limiting nut 80 will not slide downward under the locking action of the locking nut 82. The limiting position of the limiting nut 80 can be adjusted according to actual needs. The main reference index is the maximum pressure that the shock pad 13 can bear. When the shock pad 13 can bear a large pressure, the limiting nut 80 is far away from the upper host board 11, so that the upper host board 11 can compress the shock pad 13 by a long distance downward. Conversely, if the shock pad 13 can bear a small pressure, the limiting nut 80 is close to the upper host board 11, so that the upper host board 11 can move downward to compress the shock pad 13 by a short distance, and the safety performance of the shock pad 13 is ensured. Therefore, when the upper host board 11 compresses the shock pad 13 to a certain set value, the upper host board 11 abuts against the limiting nut 80, and the limiting nut 80 ensures the safety performance of the shock pad 13.

[0059] Specifically, the connecting bolt 8 is fixed on the lower host board 12 through two third fixing nuts 81, the two third fixing nuts 81 are respectively arranged on the upper and lower sides of the lower host board 12, and are threadedly connected with the connecting bolt 8. The third fixing nut 81 can ensure the stability of the connecting bolt 8. A vibration isolation rubber ring 83 is arranged on the connecting bolt 8, the vibration isolation rubber ring 83 is above the limiting nut 80, and the vibration isolation rubber ring 83 movably abuts against the upper host board 11. The vibration isolation rubber ring 83 is also a flexible member, which can absorb vibration and will not produce noise when colliding with the upper host board 11.

[0060] As shown in the figure, Figures 4-6 In order to facilitate manufacturing and installation, the upper host board 11 comprises a main board body (not marked in the figure) and a bottom cover 110 which is detachably connected with the main board body. The bottom cover 110 is detachably fixedly connected with the main board body through a bolt. A through hole is arranged on the main board body, the vibration isolation rubber ring 83 is movably arranged in the through hole, and a gap H is formed between the vibration isolation rubber ring 83 and the through hole, so that the vibration isolation rubber ring 83 can move up and down without interfering with the main board body. The bottom cover 110 covers the through hole, and the vibration isolation rubber ring 83 movably abuts against the bottom cover 110.

[0061] In practical use, this embodiment also includes a connecting bolt 8 between the upper main board 11 and the lower main board 12. An adjustable limiting nut 80 is installed on the connecting bolt 8. The limiting nut 80 restricts the maximum downward movement of the upper main board 11, preventing excessive downward movement that could crush the shock-absorbing pad 13. A vibration-damping rubber ring 83 is fitted onto the connecting nut. The vibration-damping rubber ring 83 flexibly collides with the upper main board 11, also absorbing vibration and reducing noise, thus improving passenger comfort. Figure 4 In the middle, the traction machine 2 is not working, and the distance between its compression damping pad 13 and the main machine plate 11 is small, so the upper main machine plate 11 is not abutting against the limit nut 80. For example... Figure 6 As shown, this is the maximum downward distance of the traction machine 2. The traction machine 2 compresses the shock-absorbing pad 13 to the maximum value. At this time, the upper main plate 11 is pressed against the limit nut 80, and the upper main plate 11 can no longer move downward, ensuring that the shock-absorbing pad 13 is not crushed.

[0062] Refer to Figure 1 The traction machine 2 off-center load measurement system of this embodiment also includes a first weighing induction switch 3, a first electromagnet 4, a second weighing induction switch 5, and a second electromagnet 6. The first electromagnet 4 and the second electromagnet 6 are both mounted on the upper main board 11 and are located on opposite sides of the traction machine 2. The first weighing induction switch 3 and the second weighing induction switch 5 are both mounted on the lower main board 12, with the first weighing induction switch 3 located below the first electromagnet 4 and the second weighing induction switch 5 located below the second electromagnet 6. A first gap m exists between the first electromagnet 4 and the first weighing induction switch 3, and a second gap n exists between the second electromagnet 6 and the second weighing induction switch 5. When the traction machine 2 is not in operation, the first gap m between the first electromagnet 4 and the first weighing induction switch 3 is equal to the second gap n between the second electromagnet 6 and the second weighing induction switch 5. That is, at this time, the traction machine 2 experiences equal forces on the car side and the counterweight side, with no off-center load. When the traction machine 2 is in operation, an off-center load will cause the first gap m between the first electromagnet 4 and the first weighing sensor switch 3 to be unequal to the second gap n between the second electromagnet 6 and the second weighing sensor switch 5. When m is less than n, the traction machine 2 experiences a larger force on the side closer to the first electromagnet 4 and the first weighing sensor switch 3; when m is greater than n, the traction machine 2 experiences a larger force on the side closer to the second electromagnet 6 and the second weighing sensor switch 5. This difference in the first gap m and the second gap n will result in different induced voltages on the first weighing sensor switch 3 and the second weighing sensor switch 5.

[0063] Specifically, the height of the first load sensing switch 3 and the second load sensing switch 5 relative to the lower main plate 12 is adjustable to adjust the first gap m and the second gap n respectively. After the traction machine 2 is installed on the mounting seat 1, the first gap m and the second gap n are required to be equal when the traction machine 2 is in an idle state, and the height of the first load sensing switch 3 and the second load sensing switch 5 is adjustable to reduce the installation difficulty. The specific adjustable mode is that the outer periphery of the first load sensing switch 3 and the second load sensing switch 5 is provided with an external thread 350, and the first load sensing switch 3 is fixed on the lower main plate 12 through two first fixed nuts 34, the two first fixed nuts 34 are respectively abutted on the upper and lower sides of the lower main plate 12, and are in threaded connection with the first load sensing switch 3. The second load sensing switch 5 is fixed on the lower main plate 12 through two second fixed nuts 56, the two second fixed nuts 56 are respectively abutted on the upper and lower sides of the lower main plate 12, and are in threaded connection with the second load sensing switch 5.

[0064] Embodiment two:

[0065] A traction machine load imbalance measuring method applied to the traction machine load imbalance measuring system in embodiment one, the traction machine load imbalance measuring method comprises:

[0066] When the traction machine 2 is in an idle state, the first gap m between the first electromagnet 4 and the first load sensing switch 3 is equal to the second gap n between the second electromagnet 6 and the second load sensing switch 5, at this time, the load conditions on both sides of the traction machine 2 are the same, and there is no load imbalance. And measure the first compression value of the shock pad 13.

[0067] Make the traction machine 2 in a working state, measure the first induction voltage of the first load sensing switch 3 and the second induction voltage of the second load sensing switch 5, at this time, there will be load imbalance on the traction machine 2, the first gap m and the second gap n are not equal, so that the induction voltages on the first load sensing switch 3 and the second load sensing switch 5 are different. And measure the second compression value of the shock pad 13.

[0068] According to the first compression value and the second compression value of the shock pad 13, and the difference between the first induction voltage and the second induction voltage, the load imbalance of the traction machine 2 is obtained. The size of the load imbalance of the traction machine 2 can be roughly judged by the difference between the first induction voltage and the second induction voltage, and the load imbalance of the traction machine 2 can also be indirectly calculated by software by combining the compression amount of the shock pad 13.

[0069] When the unbalanced load of the traction machine 2 is obtained, the load condition of the traction machine 2 can be adjusted according to the obtained unbalanced load of the traction machine 2. Specifically, the traction rope 7 is arranged on the traction machine 2, and one end of the traction rope 7 close to the first weight sensing switch 3 is connected with the car, and the other end of the traction rope 7 close to the second weight sensing switch 5 is connected with the counterweight; the traction machine 2 is operated, and when the first gap m is smaller than the second gap n, the balance block is added on the counterweight; when the first gap m is larger than the second gap n, the balance block is added on the car. The compensation direction of the torque can also be controlled by the system, that is, according to the values of m and n, the torque is compensated to the car side or the counterweight side, so that the unbalanced load of the traction machine 2 is reduced, and the car and the counterweight run stably as much as possible, so as to improve the riding comfort of passengers.

[0070] In summary, in the present application, the first electromagnet 4 and the first weight sensing switch 3 are arranged in a spaced manner on one side of the traction machine 2, and the second electromagnet 6 and the second weight sensing switch 5 are arranged in a spaced manner on the other side of the traction machine 2. When the traction machine 2 is in operation and unbalanced load occurs, the damping pads 13 on both sides will not be the same, that is, the distance between the first electromagnet 4 and the first weight sensing switch 3 will be different from the distance between the second electromagnet 6 and the second weight sensing switch 5. Further, the induced voltages on the first weight sensing switch 3 and the second weight sensing switch 5 are different, and according to the difference between the induced voltages on the two and the compression condition of the damping pad 13, the unbalanced load of the traction machine 2 can be obtained. The unbalanced load of the traction machine 2 is indirectly obtained through the two induced voltages and the compression condition of the damping pad 13, which is simple to operate, low in cost, and high in measurement accuracy. According to the obtained unbalanced load, the compensation direction of the torque can be controlled, so that the car and the counterweight run stably as much as possible, so as to improve the riding comfort of passengers. In the present application, only the first electromagnet 4 and the second electromagnet 6 need to be installed on the upper main plate 11, and the first weight sensing switch 3 and the second weight sensing switch 5 need to be installed on the lower main plate 12, without the need to operate the traction rope 7, which is convenient to disassemble and assemble. The unbalanced load of the traction machine 2 can be monitored in real time, or the unbalanced load of the traction machine 2 can be monitored only during testing.

[0071] In the present application, the unbalanced load of the traction machine 2 can be indirectly obtained through the difference between the induced voltages on the first weight sensing switch 3 and the second weight sensing switch 5 and the compression amount of the damping pad 13, which is high in accuracy, low in cost, convenient to measure, and low in noise.

Claims

1. A method for measuring the off-center load of a traction machine, applied to an off-center load measurement system for a traction machine, characterized in that, The traction machine off-center load measurement system includes: Traction machine, mounting base, first weighing induction switch, first electromagnet, second weighing induction switch and second electromagnet; The mounting base includes an upper main board, a lower main board, and a shock-absorbing pad. The upper and lower main boards are spaced apart, and the shock-absorbing pad is disposed between the upper and lower main boards, with its upper and lower ends abutting against the upper and lower main boards respectively. The upper main board can compress the shock-absorbing pad downwards. The traction machine is mounted on the upper main board. The first electromagnet and the second electromagnet are both mounted on the upper main board and located on opposite sides of the traction machine. The first weighing sensor switch and the second weighing sensor switch are both mounted on the lower main board, with the first weighing sensor switch located below the first electromagnet and the second weighing sensor switch located below the second electromagnet. There is a first gap m between the first electromagnet and the first weighing sensor switch, and a second gap n between the second electromagnet and the second weighing sensor switch. The heights of the first and second weighing sensors relative to the lower main board are adjustable to adjust the first gap m and the second gap n respectively. The method for measuring the off-center load of the traction machine includes: When the traction machine is not in operation, the first gap m between the first electromagnet and the first weighing induction switch is made equal to the second gap n between the second electromagnet and the second weighing induction switch; and the first compression value of the shock-absorbing pad is measured. With the traction machine in working condition, measure the first sensing voltage of the first weighing sensor switch and the second sensing voltage of the second weighing sensor switch; and measure the second compression value of the shock-absorbing pad. The off-center load condition of the traction machine is determined based on the first and second compression values ​​of the shock-absorbing pad, and the difference between the first induced voltage and the second induced voltage.

2. The traction machine off-center load measurement method according to claim 1, characterized in that, Both the first weighing sensor switch and the second weighing sensor switch have external threads on their outer periphery. The first weighing sensor switch is fixed to the lower main board by two first fixing nuts. The two first fixing nuts abut against the upper and lower sides of the lower main board respectively, and are threadedly connected to the first weighing sensor switch. The second weighing sensor switch is fixed to the lower main plate by two second fixing nuts. The two second fixing nuts abut against the upper and lower sides of the lower main plate respectively, and are threadedly connected to the second weighing sensor switch.

3. The traction machine off-center load measurement method according to claim 1, characterized in that, Based on the obtained traction machine off-center load condition, adjust the load condition of the traction machine.

4. The traction machine off-center load measurement method according to claim 3, characterized in that, The traction rope is wound around the traction machine, and the end of the traction rope near the first weighing sensor switch is connected to the car, and the end of the traction rope near the second weighing sensor switch is connected to the counterweight. To make the traction machine work, when the first gap m is smaller than the second gap n, a counterweight is added to the counterweight; when the first gap m is larger than the second gap n, a counterweight is added to the car.

5. The traction machine off-center load measurement method according to claim 1, characterized in that, A connecting bolt is provided between the upper main board and the lower main board, and a limiting nut is provided on the connecting bolt. The limiting nut is located between the upper main board and the lower main board, and the upper main board can press down against the limiting nut.

6. The traction machine off-center load measurement method according to claim 5, characterized in that, When the traction machine is not in operation, the distance between the limiting nut and the upper main plate is less than the first gap m and the second gap n.

7. The traction machine off-center load measurement method according to claim 5, characterized in that, The connecting bolt is fixed to the lower main plate by two third fixing nuts. The two third fixing nuts respectively abut against the upper and lower sides of the lower main plate and are threadedly connected to the connecting bolt. A locking nut is also threaded onto the connecting bolt, and the locking nut moves against the limiting nut.

8. The traction machine off-center load measurement method according to claim 1, characterized in that, The lower end of the shock-absorbing pad is detachably fixed to the lower main plate by the first bolt; The upper end of the shock-absorbing pad is detachably fixed to the upper main plate by a second bolt.

9. A traction machine off-center load measurement system, characterized in that, include: Mounting base; The mounting base includes an upper main board, a lower main board, and a shock-absorbing pad. The upper and lower main boards are spaced apart, and the shock-absorbing pad is disposed between the upper and lower main boards. The upper and lower ends of the shock-absorbing pad abut against the upper and lower main boards, respectively. The upper main board can compress the shock-absorbing pad downwards. A traction machine is mounted on the mounting base and is fixedly connected to the mounting base; A first weighing sensor switch, a first electromagnet, a second weighing sensor switch, and a second electromagnet; wherein the first electromagnet and the second electromagnet are both disposed on the upper main board and are respectively located on both sides of the traction machine; the first weighing sensor switch and the second weighing sensor switch are both disposed on the lower main board, with the first weighing sensor switch located below the first electromagnet and the second weighing sensor switch located below the second electromagnet; a first gap exists between the first electromagnet and the first weighing sensor switch, and a second gap exists between the second electromagnet and the second weighing sensor switch; A connecting bolt is inserted into the upper main board and the lower main board, and a limiting nut is provided on the connecting bolt. The limiting nut is threadedly connected to the connecting bolt and is located between the upper main board and the lower main board. The upper main board can move downward and abut against the limiting nut.

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