Novel rope head weighing device

Abstract

The utility model discloses a novel rope head weighing device which comprises a rope head pressing plate, a lift car rope head plate and a pressure sensor arranged between the rope head pressing plate and the lift car rope head plate. The device is connected through a screw rod, a rope head combination is fixed at the top of the screw rod and is connected with a rope head pressing plate, and the bottom of the screw rod is fixed with a lift car rope head plate through an end connecting device. The pressure sensor is installed at the bottom of the rope hitch pressing plate, and the bottom of the pressure sensor is limited above the lift car rope hitch plate through a positioning pin. The device is compact in structure and accurate in weighing, not only improves the accuracy and the safety of weighing, but also reduces the maintenance cost, is suitable for various elevator systems, and is particularly suitable for being used in occasions requiring accurate load control. And a safer elevator taking environment is provided for passengers.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of parts or components of elevators, hoists or escalators, and relates to a novel rope head weighing device. BACKGROUND

[0002] In the design of conventional elevator weighing devices, the weighing device is usually installed at the bottom of the car. Although this method can meet the basic requirements of elevator operation in daily use, it has obvious shortcomings. Due to uneven distribution of people in the car, aging of rubber pads, and complex structure of the car bottom, the traditional weighing device is prone to large measurement errors. These errors not only affect the normal operation of the elevator, but also may pose a potential threat to passenger safety. Therefore, seeking a more accurate and stable weighing method has become an important issue in the field of elevator technology.

[0003] Patent application publication CN18928692A discloses an elevator weighing device installed at the rope head, which comprises a rope head rod, a lower rope head plate, an upper rope head plate, a rope head spring, a sensor, and a displacement detector. The sensor is fixed between the lower rope head plate and the upper rope head plate through mounting bolts. The rope head rod passes through the lower rope head plate and the upper rope head plate. The rope head rod is combined with the rope head spring. After the sensor is installed on the upper rope head plate, the change in car weight is transmitted to the rope head rod. The upper end of the rope head rod presses the rope head spring. The rope head spring transmits the pressure to the pressure sensor through the upper rope head plate. In this way, the corresponding pressure can be measured. However, the bottom of the sensor of the elevator rope head weighing device is fixedly installed on the lower rope head plate. No limiting measures are provided between the top of the sensor and the upper rope head plate. As a result, the position of the upper rope head plate can be freely shifted under the swing of the car. Long-term free shift can cause different stress conditions in different areas of the sensor, which can shorten the reliable period of the sensor. CONTENT OF THE UTILITY MODEL

[0004] The present application aims to solve the problem that the rope head plate of the existing elevator rope head weighing device is subjected to long-term free shift under the swing of the car, which can cause different stress conditions in different areas of the sensor and shorten the reliable period of the sensor.

[0005] To solve the above problems, the present application provides a novel rope head weighing device. The device comprises a car rope head plate arranged below a rope head pressing plate. A pressure sensor is arranged between the car rope head plate and the rope head pressing plate. A plurality of screw rods pass through the rope head pressing plate and the car rope head plate. The upper part of the screw rod is limited above the rope head pressing plate through rope combination. The lower part of the screw rod is limited to the lower part of the car rope head plate through a terminal device. The pressure sensor is installed at the bottom of the rope head pressing plate. The bottom of the pressure sensor is limited above the car rope head plate through a positioning pin.

[0006] By the technical scheme, the pressure sensor is installed at the bottom of the rope head pressing plate, so that the top of the pressure sensor is fixed, and the bottom of the pressure sensor is limited above the car rope head plate through the positioning pin, so that the pressure sensor can only move in the up-down direction and cannot move horizontally, thereby solving the problem that the existing elevator rope head weighing device only fixes the pressure sensor above the car rope head plate, so that the rope head plate is subjected to long-term free deviation under the swing of the car, the stress conditions of each region of the sensor are different, and the reliable period of the sensor is shortened.

[0007] In order to form a stable buffering effect during the transmission of the weight of the car to the pressure sensor, preferably, the rope head assembly comprises a spring sleeved outside the screw rod, a rubber seat is arranged between the spring and the rope head pressing plate, and a nut for limiting the spring is arranged at the top of the screw rod. The spring is stably sleeved outside the screw rod through the rubber seat.

[0008] In order to stably limit the spring, preferably, the rubber seat is designed to have a larger profile on the side close to the rope head pressing plate than on the side close to the spring.

[0009] In order to stably install the rubber seat, preferably, a first retaining ring is arranged between the rubber seat and the rope head pressing plate, the first retaining ring comprises a first disc body arranged in a ring, an outer ring retaining plate extending upward from the outer edge of the first disc body, and the outer ring retaining plate wraps the outer periphery of the bottom of the rubber seat; a first inner ring retaining plate extending downward from the inner ring edge of the first disc body, and the first inner ring retaining plate comprises a lower protrusion of the rubber seat.

[0010] In order to stably limit the spring, preferably, a second retaining ring is arranged between the rubber seat and the spring, the second retaining ring comprises a second disc body, a second inner ring retaining plate extending upward from the inner ring edge of the second disc body, and the spring is clamped outside the second inner ring retaining plate.

[0011] In order to further fix and stabilize the spring, a third retaining ring is arranged between the nut and the spring.

[0012] In order to limit the spring and prevent the spring from moving during movement, and by adjusting the nut at the top of the screw rod, the tension between the rope head assembly and the traction rope can be adjusted, at least one nut is arranged at the top of the screw rod.

[0013] The technical effect of the present application is that:

[0014] 1. The application installs a pressure sensor at the bottom of the rope head pressing plate, thereby fixing the top of the pressure sensor, and the bottom of the pressure sensor is limited above the car rope head plate by a positioning pin, so that the pressure sensor can only move up and down and cannot move horizontally, solving the problem that the existing elevator rope head weighing device only fixes the pressure sensor above the car rope head plate, resulting in long-term free deviation of the rope head plate under the swing of the car, which causes different stress conditions in each area of the sensor, shortening the reliable period of the sensor.

[0015] 2. The application adds a rubber seat and a corresponding check ring structure to the rope head combination part, which alleviates the damage of the impact force of the elevator car to the pressure sensor and the rope head weighing device. The rubber seat enhances the stability of the spring. The first check ring, the second check ring and the third check ring further enhance the fixing effect between components, effectively preventing the relative displacement of each part during operation, not only ensuring the long-term stability of the weighing device, but also greatly reducing the maintenance cost and improving the overall economy. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a perspective view of a novel rope head weighing device of the application;

[0017] Figure 2 It is a top view of a novel rope head weighing device of the application;

[0018] Figure 3 It is Figure 2 A-A sectional view;

[0019] Figure 4 It is Figure 3 a enlarged view of B-B;

[0020] Figure 5 It is Figure 2 B-B sectional view;

[0021] Figure 6 It is a side view of a novel rope head weighing device of the application.

[0022] BRIEF DESCRIPTION OF DRAWINGS:

[0023] 1. Rope head combination; 11, first check ring; 12, rubber seat; 13, second check ring; 14, spring; 15, third check ring; 16, nut; 6, termination device, 2, car rope head plate; 3, pressure sensor; 4, rope head pressing plate; 5, screw rod; 31, cable terminal. DETAILED DESCRIPTION

[0024] Clearly, the described embodiments are merely a part of the embodiments of the present utility model, rather than all the embodiments.

[0025] As Figures 1 to 6 A novel rope weighing device for elevator rope weighing is shown, which is composed of the following parts: rope combination 1, car rope plate 2, pressure sensor 3, rope pressing plate 4, screw rod 5 and cable terminal 6.

[0026] The rope pressing plate 4 is located at the upper part of the device, and its function is to compress the rope and ensure the stability during the weighing process. The car rope plate 2 is located below the rope pressing plate 4, which is used to support the rope pressing plate 4 and maintain the stability of the entire device. The pressure sensor 3 is arranged between the car rope plate 2 and the rope pressing plate 4, and the pressure sensor 3 is installed at the bottom of the rope pressing plate 4 in a symmetrical I-shaped layout. The pressure sensor 3 can be installed at the bottom of the rope pressing plate 4 by using screws 31. The car rope plate 2 is made of high-strength metal material, and its upper surface is provided with two positioning pins 32 for positioning the pressure sensor 3, which ensures that the sensor will not displace when under stress.

[0027] The screw rod 5 passes through the rope pressing plate 4 and the car rope plate 2, tightly connecting the two parts. The upper part of the screw rod 5 is limited above the rope pressing plate by the rope combination 1, and the lower part is limited below the car rope plate 2 by the terminal device 6. The device is designed to be used with the elevator control unit to realize real-time monitoring and control of the elevator load.

[0028] The rope combination 1 includes: a spring 14 sleeved outside the screw rod 5, which is used to buffer and adjust the pressure; a rubber seat 12 located between the spring 14 and the rope pressing plate 4, which provides elasticity and shock absorption; and a nut 16 located at the top of the screw rod 5, which is used to limit the spring 14. The design of the combination allows the spring 14 to deform when under pressure, thereby triggering the pressure sensor 3.

[0029] As Figure 4The partial design of the rope assembly 1 above the rope pressing plate 4 is illustrated, and the design profile of the rubber seat 12 is larger on the side close to the rope pressing plate 4 than on the side close to the spring 14. This design helps to improve the stability and durability of the device, while ensuring the accuracy of the weighing process. The first baffle ring 11 is arranged between the rubber seat 12 and the rope pressing plate 4, including a first disc body 111, an outer ring baffle 112 extending upwardly from the outer edge of the first disc body 111, and a first inner ring baffle 113 extending downwardly from the inner edge of the first disc body 111. The first inner ring baffle 113 includes a lower protrusion of the rubber seat 12. The second baffle ring 13 is arranged between the rubber seat 12 and the spring 14, including a second disc body 131 and a second inner ring baffle 132 extending upwardly from the inner edge of the second disc body 131. The spring 14 is clamped outside the second inner ring baffle 132. In addition, the third baffle ring 15 is arranged between the nut 16 and the spring 14 to enhance the stability of the overall structure.

[0030] During the use of the device, when the load of the elevator car changes, the tension of the traction rope also changes accordingly. This change is transmitted to the screw rod 5 through the terminal device 6, and then affects the rope assembly 1. The compression spring 14 in the rope assembly deforms when subjected to force, pushing the rubber seat 12 to exert pressure on the pressure sensor 3. The pressure sensor 3 converts this mechanical pressure change into an electrical signal and sends it to the elevator control unit through the dedicated cable wiring terminal 33.

[0031] The mounting process of the workpiece joint mounting device provided by the above embodiment is as follows:

[0032] First, place the car rope plate 2 at the bottom of the device and ensure it is level. Install the pressure sensor 3 at the bottom of the rope pressing plate 4 and position it on the car rope plate 2 through the positioning pin, ensuring that it can uniformly transmit the pressure of the rope assembly 1. Pass the screw rod 5 through the rope pressing plate 4 and the car rope plate 2, and fix it through the rope assembly 1 and the terminal device 6. Adjust the tightness of the spring 14 to ensure that it can work stably when subjected to pressure and that the deformation range of the spring matches and ensures the pressure sensor 3. Collect data from the pressure sensor 3 through the data acquisition system and perform data processing and display.

[0033] Through the above specific embodiments, the elevator rope weighing device of the present application not only improves the accuracy and safety of weighing, but also reduces maintenance costs, is suitable for various elevator systems, and is particularly suitable for use in situations where precise control of load is required. Its fast response capability and strong adaptability make the elevator run more stably and reliably, providing a safer elevator environment for passengers.

[0034] Through the above specific embodiments, the elevator rope weighing device of the present application not only improves the accuracy and safety of weighing, but also reduces maintenance costs, is suitable for various elevator systems, and is particularly suitable for use in situations where precise control of load is required.

Claims

1. A novel rope end weighing device, characterized in that, Includes a rope end plate (4), a car rope end plate (2) set below the rope end plate (4), a pressure sensor (3) set between the car rope end plate (2) and the rope end plate (4), several screws passing through the rope end plate (4) and the car rope end plate (2), the upper part of the screw (5) being limited above the rope end plate (4) by the rope end assembly (1), and the lower part of the screw (5) being limited below the car rope end plate (2) by the termination device (6); The pressure sensor (3) is installed at the bottom of the rope head plate (4), and the bottom of the pressure sensor (3) is limited above the car rope head plate (2) by a positioning pin (32).

2. The novel rope end weighing device according to claim 1, characterized in that, The rope head assembly (1) includes: a spring (14) sleeved on the screw (5), a rubber seat (12) provided between the spring (14) and the rope head pressure plate (4), and a nut (16) for limiting the spring provided on the top of the screw (5).

3. The novel rope end weighing device according to claim 2, characterized in that, The profile of the rubber seat (12) is larger on the side closer to the rope end pressure plate (4) than on the side closer to the spring.

4. The novel rope end weighing device according to claim 2, characterized in that, A first retaining ring (11) is provided between the rubber seat (12) and the rope end pressure plate (4). The first retaining ring (11) includes a ring-shaped first disc body (111), an outer ring baffle (112) extending upward from the outer edge of the first disc body (111), and the outer ring baffle (112) wrapping the bottom outer periphery of the rubber seat (12); and a first inner ring baffle (113) extending downward from the inner ring edge of the first disc body (111), the first inner ring baffle (113) including a protrusion under the rubber seat (12).

5. The novel rope end weighing device according to claim 2, characterized in that, A second retaining ring (13) is provided between the rubber seat (12) and the spring (14). The second retaining ring (13) includes a second disc body (131) and a second inner ring baffle (132) extending upward from the inner ring edge of the second disc body (131). The spring (14) is engaged with the outside of the second inner ring baffle (132).

6. The novel rope end weighing device according to claim 2, characterized in that, A third retaining ring (15) is provided between the nut (14) and the spring (14).

7. The novel rope end weighing device according to claim 2, characterized in that, At least one nut (16) is provided on the top of the screw (5).

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