Hoisting equipment and safety monitoring system thereof

Abstract

The utility model discloses hoisting equipment and a safety monitoring system thereof. The monitoring system comprises a first weight sensor, a second weight sensor, a first height sensor, a second height sensor, a first digital transmitter, a second digital transmitter, a first analog quantity transmitter, a second analog quantity transmitter, a controller, a display screen and a power supply module. The first weight sensor and the second weight sensor are lateral pressure tension sensors, the lateral pressure tension sensors are used for detecting the real-time hoisting weight of the main hoisting mechanism and the auxiliary hoisting mechanism, and the first height sensor and the second height sensor are used for detecting the real-time hoisting height of the main hoisting mechanism and the real-time hoisting height of the auxiliary hoisting mechanism respectively. According to the utility model, the installation position and the weighing mode of the weight sensor are changed, the weight detection precision is improved, and the safety is further improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of industrial automation, and in particular relates to a lifting device and a safety monitoring system thereof. Background Art

[0002] At present, lifting equipment has been applied in various fields, such as construction, subway, port, freight, etc. There are many types of lifting equipment according to different application fields, such as gantry crane, tower crane, etc. Lifting equipment is mainly used for moving, placing and lifting large goods. Due to the particularity of the working environment of lifting equipment, its safety performance requirements are also high. The traditional lifting equipment safety monitoring system has the following defects:

[0003] (1) The weight sensor of the traditional system is installed in the middle of the base on one side of the lifting drum. The weight monitoring data is changed by the change of the vertical pressure of the lifting drum. The sensitivity of weight change is not high, resulting in relatively large weight monitoring errors and reduced safety.

[0004] (2) The height limit can only be achieved mechanically, resulting in relatively poor automatic control function;

[0005] (3) The variety of system accessories leads to high maintenance costs. Utility Model Content

[0006] The utility model aims to provide a lifting device and a safety monitoring system thereof, so as to solve the problems that the traditional system has large weight monitoring error and cannot realize electrical limit, resulting in reduced automation function.

[0007] The utility model solves the above technical problems through the following technical solutions: a lifting equipment safety monitoring system, the monitoring system comprising a first weight sensor, a second weight sensor, a first height sensor, a second height sensor, a first digital transmitter, a second digital transmitter, a first analog transmitter, a second analog transmitter, a controller, a display screen and a power module; the first weight sensor is connected to the first digital transmitter, the second weight sensor is connected to the second digital transmitter, the first height sensor is connected to the first analog transmitter, the second height sensor is connected to the second analog transmitter, the first digital transmitter, the second digital transmitter, the first analog transmitter, the second analog transmitter are connected to the controller, and the controller is connected to the display screen;

[0008] The first weight sensor includes a first lateral pressure tension sensor, which is arranged on the main hook lifting wire rope near the bottom heart ring and is used to detect the real-time lifting weight of the main lifting mechanism; the second weight sensor includes a second lateral pressure tension sensor, which is arranged on the auxiliary hook lifting wire rope near the bottom heart ring and is used to detect the real-time lifting weight of the auxiliary lifting mechanism;

[0009] The first height sensor is used to detect the real-time lifting height of the main lifting mechanism; the second height sensor is used to detect the real-time lifting height of the auxiliary lifting mechanism.

[0010] The utility model relates to a lifting equipment safety monitoring system, in which the real-time lifting weight of the main lifting mechanism detected by the first lateral pressure tension sensor is converted into a standard digital quantity by the first digital transmitter and then transmitted to the controller, and displayed on the display screen; the real-time lifting weight of the auxiliary lifting mechanism detected by the second lateral pressure tension sensor is converted into a standard digital quantity by the second digital transmitter and then transmitted to the controller, and displayed on the display screen; the real-time lifting height of the main lifting mechanism detected by the first height sensor is converted into a standard signal by the first analog transmitter and then transmitted to the controller, and displayed on the display screen; the real-time lifting height of the auxiliary lifting mechanism detected by the second height sensor is converted into a standard signal by the second analog transmitter and then transmitted to the controller, and displayed on the display screen.

[0011] The detection data of the first lateral pressure tension sensor and the second lateral pressure tension sensor change with the tension of the lifting wire rope, and have higher sensitivity to weight changes, reduce weight monitoring errors, improve weight detection accuracy, and thus improve safety; the detection data of the first lateral pressure tension sensor and the second lateral pressure tension sensor are converted into standard digital quantities by digital transmitters and then transmitted to the controller, and the detection data of the first height sensor and the second height sensor are converted into standard signals by analog transmitters and then transmitted to the controller, which facilitates long-distance transmission of data.

[0012] Furthermore, the first digital transmitter is arranged on the main hook lifting drum base, and the second digital transmitter is arranged on the auxiliary hook lifting drum base; the first analog transmitter is arranged in the main hook lifting stroke limiter, and the second analog transmitter is arranged in the auxiliary hook lifting stroke limiter.

[0013] Furthermore, the first digital transmitter, the second digital transmitter, the first analog transmitter, and the second analog transmitter are connected to the controller via a Modbus bus.

[0014] Furthermore, the controller is a PLC controller, and the display screen is an industrial control screen.

[0015] Furthermore, a rainproof shield is provided outside the first lateral pressure tension sensor and the second lateral pressure tension sensor.

[0016] Further, the monitoring system further comprises a first warning module, a second warning module, a first limiting module and a second limiting module connected to the controller;

[0017] The first warning module is used to send a main hook warning signal when the real-time lifting weight of the main lifting mechanism exceeds the main hook weight warning value and / or the real-time lifting height of the main lifting mechanism exceeds the main hook height warning value;

[0018] The second warning module is used to send out an auxiliary hook warning signal when the real-time lifting weight of the auxiliary lifting mechanism exceeds the auxiliary hook weight warning value and / or the real-time lifting height of the auxiliary lifting mechanism exceeds the auxiliary hook height warning value;

[0019] The first limiting module is used to send a main hook limiting signal and limit the action of the main lifting mechanism when the real-time lifting weight of the main lifting mechanism exceeds the main hook weight limit value and / or the real-time lifting height of the main lifting mechanism exceeds the main hook height limit value;

[0020] The second limiting module is used to send out a secondary hook limiting signal and limit the action of the secondary lifting mechanism when the real-time lifting weight of the secondary lifting mechanism exceeds the secondary hook weight limit value and / or the real-time lifting height of the secondary lifting mechanism exceeds the secondary hook height limit value.

[0021] Furthermore, the first warning module includes a first intermediate relay, a second intermediate relay and a first alarm light; the contact of the first intermediate relay is connected in parallel with the contact of the second intermediate relay and then connected in series with the first alarm light;

[0022] When the real-time lifting weight of the main lifting mechanism exceeds the main hook weight warning value, the controller controls the coil of the first intermediate relay to be energized, thereby controlling the contact of the first intermediate relay to be closed; when the real-time lifting height of the main lifting mechanism exceeds the main hook height warning value, the controller controls the coil of the second intermediate relay to be energized, thereby controlling the contact of the second intermediate relay to be closed;

[0023] The second warning module includes a third intermediate relay, a fourth intermediate relay and a second warning light; the contact of the third intermediate relay is connected in parallel with the contact of the fourth intermediate relay and then connected in series with the second warning light;

[0024] When the real-time lifting weight of the auxiliary lifting mechanism exceeds the auxiliary hook weight warning value, the controller controls the coil of the third intermediate relay to be energized, thereby controlling the contact of the third intermediate relay to be closed; when the real-time lifting height of the auxiliary lifting mechanism exceeds the auxiliary hook height warning value, the controller controls the coil of the fourth intermediate relay to be energized, thereby controlling the contact of the fourth intermediate relay to be closed;

[0025] The first limiting module includes a fifth intermediate relay, a sixth intermediate relay and a third warning light; the contact of the fifth intermediate relay is connected in parallel with the contact of the sixth intermediate relay and then connected in series with the third warning light;

[0026] When the real-time lifting weight of the main lifting mechanism exceeds the main hook weight limit, the controller controls the coil of the fifth intermediate relay to be energized, thereby controlling the contact of the fifth intermediate relay to be closed; when the real-time lifting height of the main lifting mechanism exceeds the main hook height limit, the controller controls the coil of the sixth intermediate relay to be energized, thereby controlling the contact of the sixth intermediate relay to be closed;

[0027] The second limiting module includes a seventh intermediate relay, an eighth intermediate relay and a fourth warning light; the contact of the seventh intermediate relay is connected in parallel with the contact of the eighth intermediate relay and then connected in series with the fourth warning light;

[0028] When the real-time lifting weight of the auxiliary lifting mechanism exceeds the auxiliary hook weight limit value, the controller controls the coil of the seventh intermediate relay to be energized, thereby controlling the contacts of the seventh intermediate relay to be closed; when the real-time lifting height of the auxiliary lifting mechanism exceeds the auxiliary hook height limit value, the controller controls the coil of the eighth intermediate relay to be energized, thereby controlling the contacts of the eighth intermediate relay to be closed.

[0029] Based on the same concept, the utility model also provides a lifting equipment, which includes a gantry crane body and the lifting equipment safety monitoring system as described above.

[0030] Beneficial Effects

[0031] Compared with the prior art, the advantages of the utility model are:

[0032] The utility model utilizes lateral pressure tension sensors to detect the real-time lifting weight of the main and auxiliary lifting mechanisms. When the tension of the main and auxiliary lifting wire ropes changes, the corresponding detection data of the lateral pressure tension sensors changes, the weight change sensitivity is higher, the weight monitoring error is smaller, and the weight detection accuracy is improved, thereby improving the lifting safety. The utility model solves the problem of large weight monitoring error in the traditional system by changing the installation position and weighing method of the weight sensor.

[0033] The utility model adds a controller, a digital transmitter and an analog transmitter, thereby improving the data transmission distance and the transmission quality; compared with the safety monitoring system of the double-trolley lifting equipment which needs to be equipped with two industrial control screens and only displays weight information, the utility model only uses one display screen, which can display both weight information and lifting height information, and has a more complete safety monitoring function.

[0034] The controller of the utility model adopts a PLC controller. Compared with the traditional system designed based on a single chip microcomputer, the utility model has better anti-interference ability and safety performance.

[0035] The utility model newly adds an early warning module and a limiting module, which automatically sends out an early warning signal to promptly remind the driver to slow down when the real-time lifting weight of the main and auxiliary lifting mechanisms exceeds the corresponding weight early warning value and / or the real-time lifting height of the main and auxiliary lifting mechanisms exceeds the corresponding height early warning value; when the real-time lifting weight of the main and auxiliary lifting mechanisms exceeds the corresponding weight limit value and / or the real-time lifting height of the main and auxiliary lifting mechanisms exceeds the corresponding height limit value, the action of the main and auxiliary lifting mechanisms is directly limited, thereby realizing the electrical limit function and further ensuring the safety of lifting. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only one embodiment of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0037] Figure 1 This is a schematic diagram of a safety monitoring system for lifting equipment in an embodiment of the utility model;

[0038] Figure 2 Schematic diagram of the installation position of the first lateral pressure tension sensor in the embodiment of the utility model;

[0039] Figure 3 It is a schematic diagram of the early warning and restriction functions in the embodiment of the utility model.

[0040] Description of reference numerals: 1- first lateral pressure tension sensor. DETAILED DESCRIPTION

[0041] The following is a clear and complete description of the technical solution in the utility model in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0042] like Figure 1As shown, a lifting equipment safety monitoring system provided by this embodiment includes a first weight sensor, a second weight sensor, a first height sensor, a second height sensor, a first digital transmitter, a second digital transmitter, a first analog transmitter, a second analog transmitter, a controller, a display screen and a power module; the first weight sensor is connected to the first digital transmitter, the second weight sensor is connected to the second digital transmitter, the first height sensor is connected to the first analog transmitter, the second height sensor is connected to the second analog transmitter, the first digital transmitter, the second digital transmitter, the first analog transmitter, the second analog transmitter are connected to the controller, and the controller is connected to the display screen; the power module adopts a switching power supply and provides power to various components of the system.

[0043] The first weight sensor includes a first lateral pressure tension sensor. The first lateral pressure tension sensor 1 is arranged on the main hook lifting wire rope near the bottom chicken heart ring (such as Figure 2 As shown) and is used to detect the real-time lifting weight of the main lifting mechanism; the real-time lifting weight of the main lifting mechanism detected by the first lateral pressure tension sensor 1 is converted into a standard digital quantity by the first digital transmitter and transmitted to the controller, and the real-time lifting weight of the main lifting mechanism is displayed on the display screen, so that the on-site operators can grasp the working condition of the main lifting wire rope in real time.

[0044] The second weight sensor includes a second lateral pressure tension sensor, which is arranged on the auxiliary hook lifting wire rope near the bottom heart ring and is used to detect the real-time lifting weight of the auxiliary lifting mechanism; the real-time lifting weight of the auxiliary lifting mechanism detected by the second lateral pressure tension sensor is converted into a standard digital quantity by a second digital transmitter and transmitted to the controller, and the real-time lifting weight of the auxiliary lifting mechanism is displayed on the display screen, so that on-site operators can grasp the working condition of the auxiliary lifting wire rope in real time.

[0045] In this embodiment, the distance between the lateral pressure tension sensor and the heart ring is about 1m. The utility model uses the lateral pressure tension sensor to detect the real-time lifting weight of the main and auxiliary lifting mechanisms, which can achieve high-precision lifting weight measurement with a small error range; the lateral pressure tension sensor has excellent durability and stability, and can operate stably for a long time in harsh working environments; the lateral pressure tension sensor has a compact structure and is easy to install. It does not require special tools or skills, and can be quickly installed and debugged, reducing maintenance costs; the lateral pressure tension sensor has the characteristics of low energy consumption and no mechanical wear, which meets the requirements of energy saving and environmental protection.

[0046] The first height sensor is used to detect the real-time lifting height of the main lifting mechanism; the real-time lifting height of the main lifting mechanism detected by the first height sensor is converted into a standard signal by the first analog transmitter and transmitted to the controller, and the real-time lifting height of the main lifting mechanism is displayed on the display screen, so that the on-site operator can grasp the lifting height status in real time.

[0047] The second height sensor is used to detect the real-time lifting height of the auxiliary lifting mechanism; the real-time lifting height of the auxiliary lifting mechanism detected by the second height sensor is converted into a standard signal by the second analog transmitter and transmitted to the controller, and the real-time lifting height of the auxiliary lifting mechanism is displayed on the display screen.

[0048] When the lifting equipment is working, the wire rope is deformed by force and the height changes. The detection data of the lateral pressure tension sensor and the height sensor also change. The detection data is converted by the digital transmitter / analog transmitter and transmitted to the controller. The controller transmits the data to the display screen to display the detection data. The on-site operator can grasp the lifting weight and lifting height information through the display screen, which facilitates safer lifting operations.

[0049] In a specific embodiment of the utility model, the first digital transmitter is arranged on the main hook lifting drum base, and the second digital transmitter is arranged on the auxiliary hook lifting drum base; the first analog transmitter is arranged in the main hook lifting stroke limiter, and the second analog transmitter is arranged in the auxiliary hook lifting stroke limiter.

[0050] In a specific implementation of the utility model, the first digital transmitter, the second digital transmitter, the first analog transmitter, and the second analog transmitter are connected to the controller via a Modbus bus, which has high reliability and stability and is easy to upgrade and maintain.

[0051] In a specific implementation of the utility model, a PLC controller is used as the controller, and an industrial control screen is used as the display screen; the same type of industrial control screen can be modified according to the requirements of different lifting equipment so as to present different operation interfaces, thereby improving market competitiveness.

[0052] In a specific implementation of the utility model, a rainproof shield is provided outside the first lateral pressure tension sensor and the second lateral pressure tension sensor to protect the lateral pressure tension sensors.

[0053] In a specific implementation of the present utility model, the monitoring system further includes a first warning module, a second warning module, a first limiting module and a second limiting module connected to the controller.

[0054] The first warning module is used to issue a main hook warning signal when the real-time lifting weight of the main lifting mechanism exceeds the main hook weight warning value and / or the real-time lifting height of the main lifting mechanism exceeds the main hook height warning value; the second warning module is used to issue an auxiliary hook warning signal when the real-time lifting weight of the auxiliary lifting mechanism exceeds the auxiliary hook weight warning value and / or the real-time lifting height of the auxiliary lifting mechanism exceeds the auxiliary hook height warning value; the first limiting module is used to issue a main hook limiting signal and limit the movement of the main lifting mechanism when the real-time lifting weight of the main lifting mechanism exceeds the main hook weight limit value and / or the real-time lifting height of the main lifting mechanism exceeds the main hook height limit value; the second limiting module is used to issue an auxiliary hook limiting signal and limit the movement of the auxiliary lifting mechanism when the real-time lifting weight of the auxiliary lifting mechanism exceeds the auxiliary hook weight limit value and / or the real-time lifting height of the auxiliary lifting mechanism exceeds the auxiliary hook height limit value.

[0055] The main hook weight warning value, main hook height warning value, auxiliary hook weight warning value, auxiliary hook height warning value, main hook weight limit value, main hook height limit value, auxiliary hook weight limit value and auxiliary hook height limit value can be set through the display screen. Exemplarily, the main hook weight warning value and auxiliary hook weight warning value are set to 100% of the rated lifting weight, and the main hook weight limit value and auxiliary hook weight limit value are set to 110% of the rated lifting weight.

[0056] In the specific implementation of the present utility model, Figure 3 As shown, the first warning module includes a first intermediate relay, a second intermediate relay and a first warning light LED1; the contact K1 of the first intermediate relay is connected in parallel with the contact K2 of the second intermediate relay and then in series with the first warning light LED1; when the real-time lifting weight of the main lifting mechanism exceeds the main hook weight warning value, the controller controls the coil K1 of the first intermediate relay to be energized, thereby controlling the contact K1 of the first intermediate relay to close, and the first warning light LED1 is lit; when the real-time lifting height of the main lifting mechanism exceeds the main hook height warning value, the controller controls the coil K2 of the second intermediate relay to be energized, thereby controlling the contact K2 of the second intermediate relay to close, and the first warning light LED1 is lit.

[0057] The second early warning module includes a third intermediate relay, a fourth intermediate relay and a second alarm light; the contacts of the third intermediate relay are connected in parallel with the contacts of the fourth intermediate relay and then in series with the second alarm light; when the real-time lifting weight of the auxiliary lifting mechanism exceeds the auxiliary hook weight early warning value, the controller controls the coil K3 of the third intermediate relay to be energized, thereby controlling the contacts of the third intermediate relay to close, and the second alarm light is lit; when the real-time lifting height of the auxiliary lifting mechanism exceeds the auxiliary hook height early warning value, the controller controls the coil K4 of the fourth intermediate relay to be energized, thereby controlling the contacts of the fourth intermediate relay to close, and the second alarm light is lit.

[0058] The first limiting module includes a fifth intermediate relay, a sixth intermediate relay and a third alarm light; the contacts of the fifth intermediate relay are connected in parallel with the contacts of the sixth intermediate relay and then in series with the third alarm light; when the real-time lifting weight of the main lifting mechanism exceeds the main hook weight limit value, the controller controls the coil K5 of the fifth intermediate relay to be energized, thereby controlling the contacts of the fifth intermediate relay to close, and the third alarm light is turned on, and at the same time the controller communicates with the main controller of the lifting equipment to limit the movement of the main lifting mechanism; when the real-time lifting height of the main lifting mechanism exceeds the main hook height limit value, the controller controls the coil K6 of the sixth intermediate relay to be energized, thereby controlling the contacts of the sixth intermediate relay to close, and the third alarm light is turned on, and at the same time the controller communicates with the main controller of the lifting equipment to limit the movement of the main lifting mechanism.

[0059] The second limiting module includes a seventh intermediate relay, an eighth intermediate relay and a fourth alarm light; the contacts of the seventh intermediate relay are connected in parallel with the contacts of the eighth intermediate relay and then in series with the fourth alarm light; when the real-time lifting weight of the auxiliary lifting mechanism exceeds the auxiliary hook weight limit value, the controller controls the coil K7 of the seventh intermediate relay to be energized, thereby controlling the contacts of the seventh intermediate relay to close, and the fourth alarm light is lit, and at the same time the controller communicates with the main controller of the lifting equipment to limit the action of the auxiliary lifting mechanism; when the real-time lifting height of the auxiliary lifting mechanism exceeds the auxiliary hook height limit value, the controller controls the coil K8 of the eighth intermediate relay to be energized, thereby controlling the contacts of the eighth intermediate relay to close, and the fourth alarm light is lit, and at the same time the controller communicates with the main controller of the lifting equipment to limit the action of the auxiliary lifting mechanism.

[0060] The utility model newly adds a PLC controller, an industrial control panel, a first early warning module, a second early warning module, a first limiting module and a second limiting module to form a complete electrical control circuit. When the lifting machinery fails automatically, the electrical alarm and limiting braking functions are utilized to effectively prevent accidents such as the main hook and the auxiliary hook hitting the top, thereby further improving the safety performance of the lifting equipment in construction production.

[0061] The above disclosure is only a specific implementation method of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or modifications within the technical scope disclosed in the utility model, which should be included in the protection scope of the utility model.

Claims

1. A lifting equipment safety monitoring system, characterized in that: The monitoring system comprises a first weight sensor, a second weight sensor, a first height sensor, a second height sensor, a first digital transmitter, a second digital transmitter, a first analog transmitter, a second analog transmitter, a controller, a display screen and a power supply module; the first weight sensor is connected to the first digital transmitter, the second weight sensor is connected to the second digital transmitter, the first height sensor is connected to the first analog transmitter, the second height sensor is connected to the second analog transmitter, the first digital transmitter, the second digital transmitter, the first analog transmitter, the second analog transmitter are connected to the controller, and the controller is connected to the display screen; The first weight sensor includes a first lateral pressure tension sensor, which is arranged on the main hook lifting wire rope near the bottom heart ring and is used to detect the real-time lifting weight of the main lifting mechanism; the second weight sensor includes a second lateral pressure tension sensor, which is arranged on the auxiliary hook lifting wire rope near the bottom heart ring and is used to detect the real-time lifting weight of the auxiliary lifting mechanism; The first height sensor is used to detect the real-time lifting height of the main lifting mechanism; the second height sensor is used to detect the real-time lifting height of the auxiliary lifting mechanism.

2. The lifting equipment safety monitoring system according to claim 1, characterized in that: The first digital transmitter is arranged on the main hook lifting drum base, and the second digital transmitter is arranged on the auxiliary hook lifting drum base; the first analog transmitter is arranged in the main hook lifting stroke limiter, and the second analog transmitter is arranged in the auxiliary hook lifting stroke limiter.

3. The lifting equipment safety monitoring system according to claim 1, characterized in that: The first digital transmitter, the second digital transmitter, the first analog transmitter, and the second analog transmitter are connected to the controller via a Modbus bus.

4. The lifting equipment safety monitoring system according to claim 1, characterized in that: The controller is a PLC controller, and the display screen is an industrial control screen.

5. The lifting equipment safety monitoring system according to claim 1, characterized in that: A rainproof shield is provided outside the first lateral pressure tension sensor and the second lateral pressure tension sensor.

6. The lifting equipment safety monitoring system according to any one of claims 1 to 5, characterized in that: The monitoring system further includes a first warning module, a second warning module, a first limiting module and a second limiting module connected to the controller; The first warning module is used to send a main hook warning signal when the real-time lifting weight of the main lifting mechanism exceeds the main hook weight warning value and / or the real-time lifting height of the main lifting mechanism exceeds the main hook height warning value; The second warning module is used to send out an auxiliary hook warning signal when the real-time lifting weight of the auxiliary lifting mechanism exceeds the auxiliary hook weight warning value and / or the real-time lifting height of the auxiliary lifting mechanism exceeds the auxiliary hook height warning value; The first limiting module is used to send a main hook limiting signal and limit the action of the main lifting mechanism when the real-time lifting weight of the main lifting mechanism exceeds the main hook weight limit value and / or the real-time lifting height of the main lifting mechanism exceeds the main hook height limit value; The second limiting module is used to send out an auxiliary hook limiting signal and limit the action of the auxiliary lifting mechanism when the real-time lifting weight of the auxiliary lifting mechanism exceeds the auxiliary hook weight limit value and / or the real-time lifting height of the auxiliary lifting mechanism exceeds the auxiliary hook height limit value.

7. The lifting equipment safety monitoring system according to claim 6, characterized in that: The first warning module includes a first intermediate relay, a second intermediate relay and a first alarm light; the contact of the first intermediate relay is connected in parallel with the contact of the second intermediate relay and then connected in series with the first alarm light; When the real-time lifting weight of the main lifting mechanism exceeds the main hook weight warning value, the controller controls the coil of the first intermediate relay to be energized, thereby controlling the contact of the first intermediate relay to be closed; when the real-time lifting height of the main lifting mechanism exceeds the main hook height warning value, the controller controls the coil of the second intermediate relay to be energized, thereby controlling the contact of the second intermediate relay to be closed; The second warning module includes a third intermediate relay, a fourth intermediate relay and a second warning light; the contact of the third intermediate relay is connected in parallel with the contact of the fourth intermediate relay and then connected in series with the second warning light; When the real-time lifting weight of the auxiliary lifting mechanism exceeds the auxiliary hook weight warning value, the controller controls the coil of the third intermediate relay to be energized, thereby controlling the contact of the third intermediate relay to be closed; when the real-time lifting height of the auxiliary lifting mechanism exceeds the auxiliary hook height warning value, the controller controls the coil of the fourth intermediate relay to be energized, thereby controlling the contact of the fourth intermediate relay to be closed; The first limiting module includes a fifth intermediate relay, a sixth intermediate relay and a third warning light; the contact of the fifth intermediate relay is connected in parallel with the contact of the sixth intermediate relay and then connected in series with the third warning light; When the real-time lifting weight of the main lifting mechanism exceeds the main hook weight limit, the controller controls the coil of the fifth intermediate relay to be energized, thereby controlling the contact of the fifth intermediate relay to be closed; when the real-time lifting height of the main lifting mechanism exceeds the main hook height limit, the controller controls the coil of the sixth intermediate relay to be energized, thereby controlling the contact of the sixth intermediate relay to be closed; The second limiting module includes a seventh intermediate relay, an eighth intermediate relay and a fourth warning light; the contact of the seventh intermediate relay is connected in parallel with the contact of the eighth intermediate relay and then connected in series with the fourth warning light; When the real-time lifting weight of the auxiliary lifting mechanism exceeds the auxiliary hook weight limit value, the controller controls the coil of the seventh intermediate relay to be energized, thereby controlling the contacts of the seventh intermediate relay to be closed; when the real-time lifting height of the auxiliary lifting mechanism exceeds the auxiliary hook height limit value, the controller controls the coil of the eighth intermediate relay to be energized, thereby controlling the contacts of the eighth intermediate relay to be closed.

8. A lifting device, characterized in that: The lifting equipment comprises a gantry crane body and a lifting equipment safety monitoring system according to any one of claims 1 to 7.

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