Wind-resistant anti-slip control system of crane and crane

Abstract

The invention relates to a wind-resistant anti-slip control system of a crane and the crane. The wind-resistant anti-slip control system comprises an electric hydraulic rail clamping device, a control circuit of the electric hydraulic rail clamping device comprises a KT time relay. A control circuit of the crane comprises a contactor KM5 and a cart brake contactor KM7, and a KT time relay is connected in parallel into a control circuit of the contactor KM5; and an electromagnetic valve of the electric hydraulic rail clamping device is connected in series with a power-off delay normally-open contact of the KT time relay. According to the scheme, when a crane cart is braked, the double-braking effect can be achieved without manual operation, the timeliness of rail clamping of the electric hydraulic rail clamping device is effectively improved, meanwhile, through the ingenious electrical control circuit design, a ground and air double-control power-off mechanism is achieved, it is guaranteed that the rail can be rapidly clamped under the emergency situation, and the working efficiency is improved. The phenomenon of sliding of the crane is effectively prevented, the safety is greatly improved, and the operation is flexible, simple and convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of cranes, and in particular to a crane anti-wind and anti-slip control system and a crane. Background Art

[0002] A crane refers to a multi-action lifting machinery that can vertically lift and horizontally move heavy objects within a certain range. It mainly includes bridge cranes, gantry cranes, tower cranes and crawler cranes, and has been widely used in construction sites, ports, warehouses and other places.

[0003] At present, cranes generally work in open-air environments. Since most cranes' operating mechanisms (such as trolleys) have insufficient braking torque and their own weight is large, they generally face serious safety hazards. In actual operations, such as gantry cranes or tower cranes, whether in working or non-working state, once encountering sudden conditions such as strong winds, due to the lack of effective wind-resistant and anti-skid devices, the crane will slip, causing the crane terminal stopper to be damaged by collision, and even causing the crane to overturn and collapse. In recent years, such accidents have occurred frequently, not only causing casualties, but also huge economic losses. In order to reduce the occurrence of such accidents, some cranes have installed wind-resistant and anti-skid devices, but due to defects in their design, the wind-resistant and anti-skid devices cannot synchronously clamp the rails when the crane operating mechanism stops, and when encountering sudden conditions such as strong winds, the wind-resistant and anti-skid devices cannot be conveniently and flexibly operated to immediately clamp the rails and stop the crane, and there are still major safety hazards.

[0004] Therefore, it is urgently necessary to design a crane anti-wind and anti-slip control system and crane, which can enable the electric hydraulic rail clamp to clamp the rail synchronously without manual operation when the crane trolley brakes, thereby realizing the "double braking" effect and effectively improving the timeliness of the electric hydraulic rail clamp to clamp the rail; at the same time, through the ingenious electrical control circuit design, a dual control power-off mechanism on the ground and in the air is realized to ensure that the electric hydraulic rail clamp can clamp the rail quickly in an emergency, effectively preventing the crane from slipping, greatly improving safety, and making the operation flexible and easy. Summary of the invention

[0005] In order to overcome the problems existing in the related technology, the present application provides a crane anti-wind and anti-slip control system and a crane. The crane anti-wind and anti-slip control system can enable the electric hydraulic rail clamp to synchronously clamp the rails without manual operation when the crane trolley brakes, thereby realizing a "double braking" effect and effectively improving the timeliness of the electric hydraulic rail clamp to clamp the rails; at the same time, through the ingenious electrical control circuit design, a dual control power-off mechanism on the ground and in the air is realized to ensure that the electric hydraulic rail clamp can quickly clamp the rails in an emergency, effectively preventing the crane from slipping, greatly improving safety, and the operation is flexible and easy.

[0006] The first aspect of the present application is to provide a crane anti-wind and anti-slip control system, including an electric hydraulic rail clamp; the control circuit of the electric hydraulic rail clamp includes a KT time relay; the control circuit of the crane includes a contactor KM5 and a trolley brake contactor KM7, and the contactor KM5 is connected in series with the contact of the intermediate relay K9, and the trolley brake contactor KM7 is connected in series with the contact of the intermediate relay K5; the KT time relay is connected in parallel to the control circuit of the contactor KM5; the solenoid valve of the electric hydraulic rail clamp is connected in series with the power-off delay normally open contact of the KT time relay, which is used for when the contactor KM5 is powered off, the power-off delay normally open contact of the KT time relay is disconnected after a preset time, and then the trolley brake contactor KM7 is powered off, and then the solenoid valve of the electric hydraulic rail clamp is powered off, and the crane is braked. At the same time, the electric hydraulic rail clamp performs anti-slip control on the crane under the action of the spring.

[0007] In a preferred technical solution of the present application, the control circuit of the electric hydraulic rail clamp also includes an emergency stop switch SBA; the control circuit of the crane also includes an emergency stop switch SB3; the emergency stop switch SBA and the emergency stop switch SB3 are both connected in series to the main contactor control circuit.

[0008] In a preferred technical solution of the present application, the control circuit of the electric hydraulic rail clamp further includes a limit switch SQ0; the normally open contact of the limit switch SQ0 is connected in series to the control circuit of the contactor KM5.

[0009] In a preferred technical solution of the present application, the control circuit of the crane also includes a K01 intermediate contactor; the K01 intermediate contactor is connected in parallel to the control circuit of the trolley brake contactor KM7.

[0010] In a preferred technical solution of the present application, the normally open auxiliary contact of the K01 intermediate contactor is connected in parallel to the power supply circuit of the solenoid valve of the electric hydraulic rail clamp.

[0011] In a preferred technical solution of the present application, the normally open auxiliary contact of the K01 intermediate contactor is connected in series to the power supply circuit of the oil pump motor of the electric hydraulic rail clamp.

[0012] In a preferred technical solution of the present application, the limit switch SQ0 is connected in series to the power supply circuit of the oil pump motor of the electric hydraulic rail clamp.

[0013] The second aspect of the present application is to provide a crane, including the above-mentioned crane anti-wind and anti-slip control system.

[0014] In the preferred technical solution of the present application, it includes a traveling wheel assembly and a connecting flange; the traveling wheel assembly is arranged on the rail and connected to the driving device of the trolley; the electric hydraulic rail clamp is slidably arranged on the rail of the trolley through the connecting flange, and specifically includes a hydraulic system, a connecting rod mechanism, a clamp, a limit switch, an emergency stop switch SBA and an electrical control box; the hydraulic system is connected to the connecting rod mechanism to provide power for the connecting rod mechanism; the connecting rod mechanism is connected to the clamp; the limit switch is arranged on one side of the clamp; the emergency stop switch SBA is arranged in the electrical control box; the electrical control box is electrically connected to the hydraulic system, the limit switch and the emergency stop switch SBA.

[0015] The technical solution provided by this application includes the following beneficial effects: (1) The anti-wind and anti-slip control system for cranes provided in the present application comprises an electric hydraulic rail clamp, wherein the control circuit of the electric hydraulic rail clamp comprises a KT time relay and an emergency stop switch SBA, which cooperate with the control circuit of the crane to enable the electric hydraulic rail clamp to synchronously clamp the rails while the crane trolley is braking, thereby achieving a "double braking" effect, effectively preventing the crane from slipping, avoiding overturning and collapse accidents caused by slipping, and ensuring the safety of personnel and equipment; and in this process, no manual operation is required, thereby effectively improving the timeliness of the electric hydraulic rail clamp clamping the rails and avoiding safety hazards caused by human negligence.

[0016] (2) Through the ingenious design of the electrical control circuit, a dual control power-off mechanism is realized on the ground and in the air. Whether it is in the rail clamp control box on the ground or in the driver's cab in the air, the electric hydraulic rail clamp can quickly clamp the rail in an emergency, which improves the reliability of emergency braking, greatly improves safety, and is flexible and easy to operate.

[0017] (3) By setting the limit switch SQ0, the dangerous situation of the trolley running before the electric hydraulic rail clamp is fully opened is effectively avoided. The leakage problem of the hydraulic system is effectively solved through the cooperation of the limit switch and the oil pump motor, ensuring the smooth operation of the crane trolley.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present application will become more apparent through a more detailed description of exemplary embodiments of the present application in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present application.

[0020] Figure 1It is a power distribution protection principle diagram of a crane wind-resistant and anti-slip control system shown in an embodiment of the present application; Figure 2 is a control principle diagram of the electric hydraulic rail clamp shown in the embodiment of the present application; Figure 3 is a schematic diagram of a relay shown in an embodiment of the present application; Figure 4 It is a partial structural schematic diagram of a crane shown in an embodiment of the present application.

[0021] Description of reference numerals: 1. Rails; 2. Travel wheel assembly; 3. Connecting flange; 4. Hydraulic system; 5. Connecting rod mechanism; 6. Clamp; 7. Limit switch; 8. Emergency stop switch SBA; 9. Electric control box. DETAILED DESCRIPTION

[0022] The preferred embodiments of the present application will be described in more detail below with reference to the accompanying drawings. Although the preferred embodiments of the present application are shown in the accompanying drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present application more thorough and complete, and to fully convey the scope of the present application to those skilled in the art.

[0023] The terms used in this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The singular forms of "a", "said" and "the" used in this application and the appended claims are also intended to include plural forms unless the context clearly indicates other meanings. It should also be understood that the term "and / or" used herein refers to and includes any or all possible combinations of one or more associated listed items.

[0024] In the actual operation of the crane, no matter it is in working or non-working state, once encountering sudden conditions such as strong winds, the crane will slip due to the lack of effective wind-resistant and anti-skid devices and control systems, causing the crane terminal stop to be damaged by collision, and even causing the crane to overturn and collapse, resulting in huge economic losses.

[0025] In response to the above-mentioned problems, the embodiment of the present application provides a crane anti-wind and anti-skid control system, which can enable the electric hydraulic rail clamp to synchronously clamp the rails without manual operation when the crane trolley brakes, thereby achieving a "double braking" effect, thereby ensuring that the anti-wind and anti-skid device can fully function as a safety brake, effectively improving the timeliness of the electric hydraulic rail clamping the rail; at the same time, through the ingenious electrical control circuit design, a dual control power-off mechanism on the ground and in the air is realized, ensuring that the electric hydraulic rail clamp can quickly clamp the rail in an emergency, effectively preventing the crane from slipping, greatly improving safety, and flexible and easy operation.

[0026] The technical solution of the embodiments of the present application is described in detail below with reference to the accompanying drawings. Embodiment 1

[0027] See also Figure 1-Figure 4 The present application provides a crane anti-wind and anti-slip control system, including an electric hydraulic rail clamp, which is arranged on the rails of the crane trolley. Exemplarily, the control circuit of the crane includes a contactor KM5 and a trolley brake contactor KM7, and the contactor KM5 is connected in series with the contact of the intermediate relay K9 to form a control circuit of the contactor KM5, and the trolley brake contactor KM7 is connected in series with the contact of the intermediate relay K5 to form a control circuit of the trolley brake contactor KM7. The control circuit of the electric hydraulic rail clamp includes a KT time relay; the KT time relay is connected in parallel with the contactor KM5. It should be noted that the KT time relay is connected in parallel to the control circuit of the crane trolley contactor KM5. The "parallel connection" here specifically means that the control function of the KT time relay and the control circuit of the contactor KM5 have a parallel-like logical relationship. It mainly starts timing after the contactor KM5 is powered off, and performs time control on the subsequent trolley braking and track clamping actions, rather than directly forming a parallel connection in the circuit with the main circuit or control coil of the contactor KM5.

[0028] The solenoid valve of the electric hydraulic rail clamp is connected in series with the power-off delay normally open contact of the KT time relay, so that when the contactor KM5 is powered off, the power-off delay normally open contact of the KT time relay is disconnected after a preset time, thereby deenergizing the trolley brake contactor KM7, and then the solenoid valve of the electric hydraulic rail clamp is deenergized, the crane is braked, and at the same time, the electric hydraulic rail clamp performs anti-slip control on the crane under the action of the spring.

[0029] Its working principle is as follows: when the crane trolley stops running, the intermediate relay K9 contact is disconnected first, at which time the trolley contactor KM5 is powered off and reset, and the trolley motor stops running. The KT time relay starts timing at the moment the intermediate relay K9 contact is disconnected. During the timing period, the power-off delay normally open contact of the KT time relay remains in a closed state, so that the solenoid valve of the electric hydraulic rail clamp continues to be energized, and the electric hydraulic rail clamp remains in a loose state. When the delay time set by the KT time relay is reached, its power-off delay normally open contact is disconnected, cutting off the power supply circuit of the solenoid valve of the electric hydraulic rail clamp, the solenoid valve is powered off, and the electric hydraulic rail clamp clamps the track under the action of the spring force to prevent the crane from slipping.

[0030] By setting up the KT time relay and rationally arranging the electrical control relationship between the KT time relay, the crane trolley and the electric hydraulic rail clamp, not only can the crane trolley decelerate smoothly under the action of inertia, but it can also effectively avoid the situation where the electric hydraulic rail clamp clamps the rails immediately when the trolley motor stops, causing damage to the trolley equipment. At the same time, it can also effectively solve the safety hazard problem caused by manual negligence in the existing technology that can only be achieved by manually operating the electric hydraulic rail clamp to clamp the rails, reduce labor, improve the timeliness of rail clamping, realize the "double braking" effect of the crane trolley and the electric hydraulic rail clamp, and greatly improve safety.

[0031] In a preferred embodiment, the control circuit of the electric hydraulic rail clamp also includes an emergency stop switch SBA, and the emergency stop switch SBA is arranged in the electric control box of the electric hydraulic rail clamp; the control circuit of the crane also includes an emergency stop switch SB3, and the emergency stop switch SB3 is arranged in the driver's cab. Specifically, the emergency stop switch SBA and the emergency stop switch SB3 are both connected in series to the main contactor control circuit. Exemplarily, the control circuit of the crane and the control circuit of the electric hydraulic rail clamp are electrically connected to the main contactor through three-phase electricity of A, B, and C, so that the main contactor can control the on and off of the control circuit of the crane and the control circuit of the electric hydraulic rail clamp.

[0032] The principle is: when the crane encounters sudden situations such as strong winds, the emergency stop switch SBA on the electric control box of the electric hydraulic rail clamp or the emergency stop switch SB3 in the driver's cab can be pressed to disconnect the main contactor coil circuit, and the main contactor is powered off and reset, thereby cutting off the circuit between the crane and the electric hydraulic rail clamp, causing the crane trolley to stop running and the electric hydraulic rail clamp to clamp the track under the action of the spring force. By setting the emergency stop switch SBA and the emergency stop switch SB3, a dual control power-off mechanism can be formed on the ground (rail clamp control box) and in the air (driver's cab) when the crane is running, which effectively makes up for the inflexibility of single control, makes the operation of the staff flexible and simple, and ensures that the electric hydraulic rail clamp can quickly clamp the rails in an emergency to prevent the crane from slipping, thereby effectively avoiding overturning and collapse accidents.

[0033] In a preferred embodiment, the control circuit of the electric hydraulic rail clamp also includes a limit switch SQ0 for detecting the state of the electric hydraulic rail clamp; the normally open contact (15-2) of the limit switch SQ0 is connected in series to the control circuit of the contactor KM5. When the contact of the intermediate relay K9 is turned on, because the normally open contact (15-2) of the hydraulic rail clamp limit switch SQ0 is connected in series in the control circuit of the trolley contactor KM5, at this time, the control circuit of the trolley contactor KM5 is not fully turned on, until the electric hydraulic rail clamp is fully opened and touches the limit switch SQ0, so that its normally open contact (15-2) is closed, the control circuit of the trolley contactor KM5 is connected to power, and the trolley motor is powered on and operated. By setting the control circuit of limit switch SQ0 in series with contactor KM5, the state of the electric hydraulic rail clamp is interlocked with the start of the trolley motor. The trolley motor can only be started when the electric hydraulic rail clamp is fully opened, avoiding the starter trolley from running when the electric hydraulic rail clamp is not fully opened, thus ensuring the safety and reliability of the crane trolley operation.

[0034] In a preferred embodiment, the control circuit of the electric hydraulic rail clamp also includes a K01 intermediate contactor; the K01 intermediate contactor is connected in parallel to the control circuit of the trolley brake contactor KM7, so that when the K5 contact is connected, while the trolley brake contactor KM7 is energized and attracted, the K01 intermediate contactor will also be energized because the K01 intermediate contactor is connected in parallel to the control circuit of the trolley brake contactor KM7.

[0035] A group of normally open auxiliary contacts of the K01 intermediate contactor are connected in series to the power supply circuit of the oil pump motor of the electric hydraulic rail clamp, so that when the K01 intermediate contactor is turned on, its normally open auxiliary contacts are closed, and the originally disconnected power supply circuit of the oil pump motor is connected, so that the oil pump motor is started, and pressure oil is provided to the hydraulic system to ensure that the electric hydraulic rail clamp is opened. Another group of normally open auxiliary contacts of the K01 intermediate contactor is connected in parallel with the normally open contacts of the KT time relay power-off delay, and then connected in series to the power supply circuit of the solenoid valve of the electric hydraulic rail clamp, so that when the K01 intermediate contactor is turned on, its normally open auxiliary contacts are closed, and the power supply circuit of the solenoid valve is turned on, and the pressure oil provided by the oil pump motor is cooperated to open the hydraulic rail clamp, ensuring that the electric hydraulic rail clamp will not hinder the operation of the trolley.

[0036] Due to leakage inside the hydraulic system of the electric hydraulic rail clamp, the opening degree of the electric hydraulic rail clamp will gradually decrease after it is opened for a period of time, which will affect the smooth operation of the crane trolley. In order to solve this problem, in a preferred embodiment, the limit switch SQ0 is connected in series to the power supply circuit of the oil pump motor of the electric hydraulic rail clamp. The principle is: when the opening degree of the hydraulic rail clamp is reduced to a specific threshold, the mechanical component of the electric hydraulic rail clamp will trigger the limit switch SQ0. Since the connection mode of the limit switch SQ0 in the circuit is connected in series to the power supply circuit of the oil pump motor of the electric hydraulic rail clamp, when it is triggered, the power supply of the oil pump motor is connected, and the oil pump motor is started immediately to perform oil replenishment operation to ensure that the electric hydraulic rail clamp can be restored to a fully open state, thereby ensuring that the trolley operation is not hindered. At the same time, through cooperation with the KT time relay, within a period of time after the limit switch SQ0 is triggered (i.e., the delay time of KT), the control circuit of the trolley contactor KM5 will not be affected and will remain energized. In this way, the trolley motor can continue to operate normally, avoiding the interruption of trolley operation caused by slight state changes of the track clamp (the opening degree is reduced and the limit switch is triggered), and further ensuring the continuity and stability of the trolley operation.

[0037] Working principle: (1) Crane trolley operation: When the crane trolley needs to be operated, the contact of the intermediate relay K5 is connected, the trolley brake contactor KM7 is energized and attracted, and the trolley brake is energized and opened. At the same time, the intermediate contactor K01 is energized, and the two sets of normally open auxiliary contacts of the intermediate contactor K01 are closed, connecting the oil pump motor and the solenoid valve circuit of the electric hydraulic rail clamp, so that the electric hydraulic rail clamp begins to open. When the electric hydraulic rail clamp is fully opened and touches the limit switch SQ0, the normally open contact (15-2) of the limit switch SQ0 is closed, the contact of the intermediate relay K5 is connected, the control circuit of the contactor KM5 is connected and energized, the KM5 contactor is attracted, and the trolley motor is energized and starts to run.

[0038] (2) The crane trolley stops and the electric hydraulic rail clamp clamps the rail: When the crane trolley stops running, the intermediate relay K9 contact is disconnected first, and the trolley contactor KM5 is powered off and reset, and the trolley motor stops running. The KT time relay starts timing at the moment the intermediate relay K9 contact is disconnected. During the timing period, the power-off delay normally open contact of the KT time relay remains in a closed state, so that the solenoid valve of the electric hydraulic rail clamp continues to be energized, and the electric hydraulic rail clamp remains in a loose state. When the delay time set by the KT time relay is reached, its power-off delay normally open contact is disconnected, cutting off the power supply circuit of the solenoid valve of the electric hydraulic rail clamp, the solenoid valve is powered off, and the electric hydraulic rail clamp clamps the track under the action of the spring force.

[0039] (3) During operation, if there are sudden situations such as strong winds: Pressing the emergency stop switch SBA on the electric control box of the electric hydraulic rail clamp or the emergency stop switch SB3 in the driver's cab disconnects the main contactor coil circuit, and the main contactor is powered off and reset, thereby cutting off the circuit between the crane and the electric hydraulic rail clamp, causing the crane trolley to stop running and the electric hydraulic rail clamp to clamp the track under the action of spring force.

[0040] In the first embodiment of the present invention, the anti-wind and anti-slip control system of the crane provided by the present application includes an electric hydraulic rail clamp, and the control circuit of the electric hydraulic rail clamp includes a KT time relay and an emergency stop switch SBA, which cooperates with the control circuit of the crane, and can make the electric hydraulic rail clamp synchronously clamp the rails while the crane operating mechanism stops, so as to achieve a "double braking" effect, effectively preventing the crane from slipping, avoiding overturning and collapse accidents caused by slipping, and ensuring the safety of personnel and equipment; and in this process, no manual operation is required, which effectively improves the timeliness of the electric hydraulic rail clamp clamping the rails, and avoids the safety hazards caused by manual negligence. At the same time, through the clever design of the electrical control circuit, a dual control power-off mechanism is realized on the ground and in the air. Whether it is the rail clamp control box on the ground or the driver's cab in the air, the electric hydraulic rail clamp can quickly clamp the rails in an emergency, which improves the reliability of emergency braking, greatly improves safety, and is flexible and easy to operate. By setting the limit switch SQ0, the dangerous situation of the trolley running before the electric hydraulic rail clamp is fully opened is effectively avoided. The cooperation of the limit switch and the oil pump motor effectively solves the leakage problem of the hydraulic system and ensures the smooth operation of the crane trolley. Embodiment 2

[0041] Corresponding to the above-mentioned crane anti-wind and anti-slip control system, the present application also proposes a crane, see Figure 1-Figure 4 , specifically: Based on the structure of the above-mentioned embodiment 1, the crane provided in the embodiment 2 of the present application includes the above-mentioned crane wind-resistant and anti-slip control system. Specifically, the crane includes a running wheel assembly 2 and a connecting flange 3; the running wheel assembly 2 is arranged on a steel rail and connected to a driving device of a trolley.

[0042] The electric hydraulic rail clamp is slidably arranged on the rail 1 of the trolley through the connecting flange 3, and specifically includes a hydraulic system 4, a connecting rod mechanism 5, a clamp 6, a limit switch 7, an emergency stop switch SBA8 and an electric control box 9; the hydraulic system 4 is connected to the connecting rod mechanism 5, and is used to provide power for the connecting rod mechanism 5; the connecting rod mechanism 5 is connected to the clamp 6; the limit switch 7 is arranged on one side of the clamp 6; the emergency stop switch SBA8 is arranged in the electric control box 9; the electric control box 9 is electrically connected to the hydraulic system 4, the limit switch 7, and the emergency stop switch SBA8.

[0043] In the embodiment of the present application, by setting the traveling wheel assembly on the rail and connecting it to the trolley drive device, the stable operation of the trolley can be ensured. The electric hydraulic rail clamp is slidably set on the rail through the connecting flange, and the hydraulic system supplies energy to the connecting rod mechanism, which drives the clamp to move, thereby clamping and loosening the rail and effectively preventing the crane from slipping; by setting the limit switch on one side of the clamp, the clamp status can be accurately monitored to ensure the reliability of the rail clamp; by setting the emergency stop switch SBA, the staff on the ground can quickly cut off the main circuit in an emergency to ensure the safety of equipment and personnel. The whole system cooperates to improve the safety, stability and reliability of the crane operation.

[0044] The scheme of the present application has been described in detail above with reference to the accompanying drawings. In the above embodiments, the description of each embodiment has its own emphasis. For the part that is not described in detail in a certain embodiment, reference can be made to the relevant description of other embodiments. Those skilled in the art should also be aware that the actions and modules involved in the description are not necessarily required for the present application. In addition, it can be understood that the steps in the method of the embodiment of the present application can be adjusted in order, merged and deleted according to actual needs, and the modules in the device of the embodiment of the present application can be merged, divided and deleted according to actual needs.

[0045] The embodiments of the present application have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The selection of terms used herein is intended to best explain the principles of the embodiments, practical applications, or improvements to the technology in the market, or to enable other persons of ordinary skill in the art to understand the embodiments disclosed herein.

Claims

1. A crane anti-wind and anti-slip control system, characterized in that: Including electric hydraulic rail clamps; The control circuit of the electric hydraulic rail clamp includes a KT time relay; The control circuit of the crane includes a contactor KM5 and a trolley brake contactor KM7, and the contactor KM5 is connected in series with the contact of the intermediate relay K9, and the trolley brake contactor KM7 is connected in series with the contact of the intermediate relay K5; The KT time relay is connected in parallel to the control circuit of the contactor KM5; The solenoid valve of the electric hydraulic rail clamp is connected in series with the power-off delay normally open contact of the KT time relay, so that when the contactor KM5 is powered off, the power-off delay normally open contact of the KT time relay is disconnected after a preset time, thereby deenergizing the trolley brake contactor KM7, and then the solenoid valve of the electric hydraulic rail clamp is deenergized, the crane is braked, and at the same time, the electric hydraulic rail clamp performs anti-slip control on the crane under the action of the spring.

2. The crane anti-wind and anti-slip control system according to claim 1 is characterized in that: The control circuit of the electric hydraulic rail clamp also includes an emergency stop switch SBA; The control circuit of the crane also includes an emergency stop switch SB3; The emergency stop switch SBA and the emergency stop switch SB3 are both connected in series to the main contactor control circuit.

3. The crane anti-wind and anti-slip control system according to claim 1 is characterized in that: The control circuit of the electric hydraulic rail clamp also includes a limit switch SQ0; The normally open contact of the limit switch SQ0 is connected in series to the control circuit of the contactor KM5.

4. The crane anti-wind and anti-slip control system according to claim 1 is characterized in that: The control circuit of the electric hydraulic rail clamp also includes a K01 intermediate contactor; The K01 intermediate contactor is connected in parallel to the control circuit of the trolley brake contactor KM7.

5. The crane anti-wind and anti-slip control system according to claim 4 is characterized in that: The normally open auxiliary contact of the K01 intermediate contactor is connected in parallel to the power supply circuit of the solenoid valve of the electric hydraulic rail clamp.

6. The crane anti-wind and anti-slip control system according to claim 4 is characterized in that: The normally open auxiliary contact of the K01 intermediate contactor is connected in series to the power supply circuit of the oil pump motor of the electric hydraulic rail clamp.

7. The crane anti-wind and anti-slip control system according to claim 3 is characterized in that: The limit switch SQ0 is connected in series to the power supply circuit of the oil pump motor of the electric hydraulic rail clamp.

8. A crane, characterized in that: The invention comprises the crane anti-wind and anti-slip control system as described in any one of claims 1 to 7.

9. The crane according to claim 8, characterized in that It comprises a running wheel assembly (2) and a connecting flange (3); The running wheel assembly (2) is arranged on the steel rail (1) and is connected to the driving device of the trolley; The electric hydraulic rail clamp is slidably arranged on the steel rail (1) of the trolley through the connecting flange (3), and specifically comprises a hydraulic system (4), a connecting rod mechanism (5), a clamp (6), a limit switch (7), an emergency stop switch SBA (8) and an electric control box (9); The hydraulic system (4) is connected to the connecting rod mechanism (5) and is used to provide power for the connecting rod mechanism (5); The connecting rod mechanism (5) is connected to the clamp (6); The limit switch (7) is arranged on one side of the clamp (6); The emergency stop switch SBA (8) is arranged in an electric control box (9); The electric control box (9) is electrically connected to the hydraulic system (4), the limit switch (7), and the emergency stop switch SBA (8).

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