A crane wind-resistant anti-slip control system and crane

Abstract

The application relates to a crane wind-resisting and anti-slip control system and a crane, which comprises an electric hydraulic rail clamp; a KT time relay is arranged in the control circuit of the electric hydraulic rail clamp; a contactor KM5 and a trolley brake contactor KM7 are arranged in the control circuit of the crane, the KT time relay is connected in parallel into the control circuit of the contactor KM5, and an electromagnetic valve of the electric hydraulic rail clamp is connected in series with a power-off delay normally open contact of the KT time relay. According to the scheme, the double-braking effect can be realized without manual operation when the crane trolley is braked, the timeliness of the electric hydraulic rail clamp is effectively improved, meanwhile, through the ingenious design of the electrical control circuit, the ground and air double-control power-off mechanism is realized, the crane can be rapidly clamped in the emergency, the phenomenon of the crane slipping is effectively prevented, the safety is greatly improved, and the operation is flexible and simple.

Description

TECHNICAL FIELD

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

[0002] A crane refers to a multi-motion hoisting machinery for vertically lifting and horizontally transporting heavy objects within a certain range, mainly including bridge cranes, gantry cranes, tower cranes and caterpillar cranes, and has been widely used in construction sites, ports and warehouses and other places.

[0003] At present, cranes generally work in open environments. Due to the problem of insufficient braking torque of the running mechanism (such as the trolley) of most cranes, and the large weight of the crane itself, the crane generally faces serious safety hazards. In actual operation, such as a gantry crane or a tower crane, whether in a working state or a non-working state, once a sudden situation such as strong wind is encountered, due to the lack of effective wind-resistant anti-slip devices, the crane may slip, causing the terminal stop of the crane to be damaged by impact, and even causing the crane to overturn and collapse. In recent years, such accidents have occurred frequently, not only causing casualties, but also causing huge economic losses. In order to reduce the occurrence of such accidents, some cranes have been installed with wind-resistant anti-slip devices, but due to the design defects, the wind-resistant anti-slip devices cannot simultaneously clamp the rails when the running mechanism of the crane stops, and when a sudden situation such as strong wind is encountered, the wind-resistant anti-slip devices cannot be conveniently and flexibly operated to immediately clamp the rails and stop the crane, so there is still a great safety hazard.

[0004] Therefore, it is urgent to design a crane wind-resistant anti-slip control system and crane, which can make the electric hydraulic rail clamps clamp the rails simultaneously without manual operation when the trolley of the crane is braked, realize the "double braking" effect, effectively improve the timeliness of the electric hydraulic rail clamps clamping the rails, and through the ingenious design of the electrical control circuit, realize the ground and air double control power-off mechanism, ensure that the electric hydraulic rail clamps can quickly clamp the rails in an emergency, effectively prevent the crane from slipping, greatly improve the safety, and the operation is flexible and simple. SUMMARY

[0005] In order to overcome the problems in the related art, the present application provides a crane wind-resistant anti-slip control system and crane. The crane wind-resistant anti-slip control system can make the electric hydraulic rail clamps clamp the rails simultaneously without manual operation when the trolley of the crane is braked, realize the "double braking" effect, effectively improve the timeliness of the electric hydraulic rail clamps clamping the rails, and through the ingenious design of the electrical control circuit, realize the ground and air double control power-off mechanism, ensure that the electric hydraulic rail clamps can quickly clamp the rails in an emergency, effectively prevent the crane from slipping, greatly improve the safety, and the operation is flexible and simple.

[0006] The first aspect of the present application provides a crane wind resistance and anti-slip control system, comprising an electric hydraulic rail clamp; a KT time relay is included in the control circuit of the electric hydraulic rail clamp; a contactor KM5 and a trolley brake contactor KM7 are included in the control circuit of the crane, and the contactor KM5 is connected in series with the contact of an intermediate relay K9, and the trolley brake contactor KM7 is connected in series with the contact of an intermediate relay K5; the KT time relay is connected in parallel in the control circuit of the contactor KM5; the electromagnetic 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 causing the trolley brake contactor KM7 to be powered off, and then the electromagnetic valve of the electric hydraulic rail clamp is powered off, the crane is braked, and at the same time, the electric hydraulic rail clamp controls the crane against slipping under the action of a spring.

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

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

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

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

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

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

[0013] The second aspect of the present application provides a crane, comprising the crane wind resistance and anti-slip control system described above.

[0014] In the preferable technical scheme of the present application, the walking wheel assembly is arranged on the steel rail and connected with the driving device of the trolley, the electric hydraulic rail clamp is slidably arranged on the steel rail of the trolley through the connecting flange, and specifically comprises a hydraulic system, a connecting rod mechanism, a clamp, a limit switch, an emergency stop switch SBA and an electric control box.

[0015] The technical scheme provided by the present application has the following beneficial effects:

[0016] (1) The anti-wind and anti-slip control system of the crane provided by the present application comprises an electric hydraulic rail clamp, the control circuit of the electric hydraulic rail clamp comprises a KT time relay and an emergency stop switch SBA, and cooperates with the control circuit of the crane, so that the electric hydraulic rail clamp can be synchronously clamped to the steel rail while the trolley of the crane is braked, the "double braking" effect is realized, the phenomenon of the crane slipping is effectively prevented, the overturning and collapse accidents caused by the slipping are avoided, the safety of personnel and equipment is ensured, and manual operation is not required in the process, so that the timeliness of the clamping of the electric hydraulic rail clamp is effectively improved, and the safety hidden danger caused by manual negligence is avoided.

[0017] (2) Through the ingenious design of the electrical control circuit, the ground and air double control power-off mechanism is realized, the electric hydraulic rail clamp can be quickly clamped to the steel rail in the emergency situation whether in the rail clamp control box on the ground or in the driver's room in the air, the reliability of the emergency braking is improved, the safety is greatly improved, and the operation is flexible and simple.

[0018] (3) Through the arrangement of the limit switch SQ0, the dangerous situation that the trolley runs before the electric hydraulic rail clamp is completely opened is effectively avoided, and through the cooperation of the limit switch and the oil pump motor, the leakage problem of the hydraulic system is effectively solved, and the smooth running of the trolley of the crane is ensured.

[0019] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0020] The above and other objects, features and advantages of the present application will become more apparent from the following detailed description when taken in conjunction with the accompanying drawings in which similar reference characters refer to similar elements throughout the several views, and in which:

[0021] Figure 1is the power distribution protection schematic diagram of the crane wind-resistant anti-slip control system shown in the embodiments of the present application;

[0022] Figure 2 is the control schematic diagram of the electric hydraulic rail clamping device shown in the embodiments of the present application;

[0023] Figure 3 is the schematic diagram of the relay shown in the embodiments of the present application;

[0024] Figure 4 is the partial structure schematic diagram of the crane shown in the embodiments of the present application.

[0025] Explanation of reference signs:

[0026] 1, steel rail; 2, walking 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

[0027] 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 drawings, it should be understood that the present application can be implemented in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided so that the present application is more thoroughly and completely conveyed to those skilled in the art, and the scope of the present application is fully conveyed to those skilled in the art.

[0028] The terms used in the present application are merely for the purpose of describing specific embodiments and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the present application and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used herein means and includes any or all possible combinations of one or more associated listed items.

[0029] In the actual operation of the crane, whether in a working state or a non-working state, once encountering a sudden situation such as strong wind, due to the lack of effective wind-resistant anti-slip devices and control systems, the phenomenon of slipping will occur, which will cause the terminal stop of the crane to be damaged by impact, and even cause the crane to overturn and collapse, resulting in huge economic losses.

[0030] To solve the above problems, the embodiment of the present application provides a crane wind-resistant and anti-sliding control system, which can make the electric hydraulic rail clamps synchronously clamp the rails without manual operation when the crane trolley is braked, so as to realize the "double braking" effect, thereby ensuring that the function of the wind-resistant and anti-sliding device as a safety brake can be fully played, and the timeliness of the electric hydraulic rail clamps clamping the rails is effectively improved. Meanwhile, through the ingenious design of the electrical control circuit, the ground and air double control power-off mechanism is realized, so that the electric hydraulic rail clamps can quickly clamp the rails in an emergency, the phenomenon of the crane sliding is effectively prevented, the safety is greatly improved, and the operation is flexible and simple.

[0031] The technical solutions of the embodiments of the present application are described in detail below with reference to the drawings. Embodiment one

[0032] Please refer to Figures 1-4 The crane wind-resistant and anti-sliding control system provided by the present application comprises an electric hydraulic rail clamp, and the electric hydraulic machine rail clamp is arranged on the rails of the crane trolley. Exemplarily, the control circuit of the crane comprises a contactor KM5 and a trolley brake contactor KM7, and the contactor KM5 is connected in series with the contact of an intermediate relay K9 to form the control circuit of the contactor KM5. The trolley brake contactor KM7 is connected in series with the contact of the intermediate relay K5 to form the control circuit of the trolley brake contactor KM7. The control circuit of the electric hydraulic rail clamp comprises a KT time relay, and the KT time relay is connected in parallel to 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. Here, the "parallel connection" means that the control of the KT time relay and the control circuit of the contactor KM5 have a similar parallel logical relationship, mainly that the timing starts after the contactor KM5 is powered off, and the time control is performed on the subsequent trolley braking and rail clamp action, instead of being directly connected in parallel with the main circuit or the control coil of the contactor KM5.

[0033] The electromagnetic 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, then the trolley brake contactor KM7 is powered off, and then the electromagnetic valve of the electric hydraulic rail clamp is powered off, the crane is braked, and at the same time, the electric hydraulic rail clamp controls the anti-sliding of the crane under the action of the spring.

[0034] The principle of action is that when the crane trolley stops running, the middle relay K9 contact is first disconnected, 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 when the middle relay K9 contact is disconnected. During the timing period, the power-off delay normally open contact of the KT time relay remains closed, so that the solenoid valve of the electric hydraulic rail clamp remains powered on, and the electric hydraulic rail clamp remains loosened. When the set delay time of the KT time relay reaches, the power-off delay normally open contact of the KT time relay is disconnected, cutting off the power supply circuit of the solenoid valve of the electric hydraulic rail clamp, and the solenoid valve is powered off. The electric hydraulic rail clamp is clamped under the action of the spring force, and the crane is controlled to prevent sliding.

[0035] By setting the KT time relay and reasonably 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 be smoothly decelerated under the action of inertia, but also can effectively avoid the situation that the electric hydraulic rail clamp is immediately clamped to the rail at the moment when the trolley motor stops, causing damage to the trolley equipment. At the same time, it can also effectively solve the problem in the prior art that the electric hydraulic rail clamp can only be clamped by manual operation, which is prone to cause safety hazards due to human negligence. The manual operation is reduced, the clamping timeliness is improved, the "double braking" effect of the crane trolley and the electric hydraulic rail clamp is realized, and the safety is greatly improved.

[0036] In a preferred embodiment, the control circuit of the electric hydraulic rail clamp further comprises an emergency stop switch SBA, which is arranged in the electric control box of the electric hydraulic rail clamp; the control circuit of the crane further comprises an emergency stop switch SB3, which is arranged in the driver's room. Specifically, the emergency stop switch SBA and the emergency stop switch SB3 are both connected in series in the total contactor control circuit. For example, the control circuit of the crane and the control circuit of the electric hydraulic rail clamp are electrically connected to the total contactor through A, B and C three-phase power, so that the total contactor can control the on-off of the control circuit of the crane and the control circuit of the electric hydraulic rail clamp.

[0037] The principle is: when the crane encounters sudden conditions such as strong wind, the emergency stop switch SBA on the electric hydraulic rail clamp control box or the emergency stop switch SB3 in the cab can be pressed to disconnect the total contactor coil circuit, and the total contactor is powered off and reset, thereby cutting off the circuit of the crane and the electric hydraulic rail clamp, so that the crane trolley stops running, and the electric hydraulic rail clamp clamps the rail under the action of the spring force. By setting the emergency stop switch SBA and the emergency stop switch SB3, a ground (rail clamp control box) and air (cab) double control power-off mechanism during crane operation can be formed, effectively compensating for the inflexibility of single control, making the operation of the staff flexible and simple, and ensuring that the electric hydraulic rail clamp can quickly clamp the steel rail in an emergency to prevent the crane from rolling, thereby effectively avoiding overturning and collapse accidents.

[0038] In a preferred embodiment, the control circuit of the electric hydraulic rail clamp further includes a limit switch SQ0 for detecting the state of the electric hydraulic rail clamp; and the normally open contact (15-2) of the limit switch SQ0 is connected in series in the control circuit of the contactor KM5. When the intermediate relay K9 contact is connected, 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 completely turned on, until the electric hydraulic rail clamp is completely opened, the limit switch SQ0 is touched, the normally open contact (15-2) is closed, and then the control circuit of the trolley contactor KM5 is connected to the power supply, and the trolley motor is powered on and runs. By connecting the limit switch SQ0 in series with the control circuit of the contactor KM5, the state of the electric hydraulic rail clamp is interlocked with the start of the trolley motor, and only when the electric hydraulic rail clamp is completely opened, the trolley motor can start running, avoiding the start of the trolley motor when the electric hydraulic rail clamp is not completely opened, and ensuring the safety and reliability of the crane trolley operation.

[0039] In a preferred embodiment, the control circuit of the electric hydraulic rail clamp further includes a K01 intermediate contactor; and the K01 intermediate contactor is connected in parallel in the control circuit of the trolley brake contactor KM7, so that when the K5 contact is connected, the trolley brake contactor KM7 is powered on and attracted, and at the same time, because the K01 intermediate contactor is connected in parallel in the control circuit of the trolley brake contactor KM7, the K01 intermediate contactor is also powered on.

[0040] The one group of normally open auxiliary contacts of the K01 intermediate contactor is connected in series in 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, the normally open auxiliary contact thereof is closed, the originally disconnected power supply circuit of the oil pump motor is turned on, the oil pump motor is started, pressure oil is provided for the hydraulic system, and the electric hydraulic rail clamp is ensured to be opened. After the other group of normally open auxiliary contacts of the K01 intermediate contactor is connected in parallel with the normally open contact of the KT time relay power-off delay, the normally open auxiliary contact is connected in series in the power supply circuit of the electromagnetic valve of the electric hydraulic rail clamp, so that when the K01 intermediate contactor is turned on, the normally open auxiliary contact thereof is closed, the power supply circuit of the electromagnetic valve is turned on, and the pressure oil provided by the oil pump motor makes the hydraulic rail clamp open, so that the electric hydraulic rail clamp does not hinder the operation of the crane trolley.

[0041] Due to the leakage phenomenon existing in the hydraulic system of the electric hydraulic rail clamp, the opening degree of the electric hydraulic rail clamp will gradually decrease after being 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 in the power supply circuit of the oil pump motor of the electric hydraulic rail clamp. The principle is that when the opening degree of the hydraulic rail clamp decreases to a certain threshold, the mechanical part of the electric hydraulic rail clamp will trigger the limit switch SQ0. Since the limit switch SQ0 is connected in series in the power supply circuit of the oil pump motor of the electric hydraulic rail clamp in the circuit, when it is triggered, the power supply of the oil pump motor is turned on, and the oil pump motor is started immediately to perform oil supplementing operation, so as to ensure that the electric hydraulic rail clamp can recover to the fully opened state, thereby ensuring that the trolley is not hindered. At the same time, through cooperation with the KT time relay, the control circuit of the trolley contactor KM5 will not be affected within a period of time after the limit switch SQ0 is triggered (i.e. within the delay time of the KT), and the trolley contactor KM5 will remain in the energized state. In this way, the trolley motor can continue to operate normally, avoiding the interruption of the trolley operation caused by the slight change of the rail clamp (triggering of the limit switch due to decrease of the opening degree), and further ensuring the continuity and stability of the trolley operation.

[0042] Working principle:

[0043] (1) Crane trolley operation:

[0044] When the crane trolley needs to run, the middle relay K5 contact is connected, the trolley brake contactor KM7 is energized and attracted, and the trolley brake is energized and opened. At the same time, the K01 middle contactor is powered, the 2 groups of normally open auxiliary contacts of the K01 middle contactor are closed, the oil pump motor and the electromagnetic valve circuit of the electric hydraulic rail clamp are connected, and the electric hydraulic rail clamp starts 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 middle relay K5 contact is connected, the control circuit of the contactor KM5 is connected and powered, the KM5 contactor is attracted, and the trolley motor is powered to start running.

[0045] (2) The crane trolley stops, and the electric hydraulic rail clamp clamps the rail:

[0046] When the crane trolley stops running, the middle relay K9 contact is disconnected first, at which time the trolley contactor KM5 is de-energized and reset, and the trolley motor stops running. The KT time relay starts timing at the moment when the middle relay K9 contact is disconnected, and during the timing period, the de-energization delay normally open contact of the KT time relay remains closed, so that the electromagnetic valve of the electric hydraulic rail clamp continues to be powered, and the electric hydraulic rail clamp remains loosened. When the set delay time of the KT time relay reaches, the de-energization delay normally open contact of the KT time relay is disconnected, cutting off the power supply circuit of the electromagnetic valve of the electric hydraulic rail clamp, the electromagnetic valve is de-energized, and the electric hydraulic rail clamp is clamped under the action of the spring force.

[0047] (3) When working, sudden conditions such as strong wind are encountered:

[0048] Press the emergency stop switch SBA on the electric hydraulic rail clamp control box or the emergency stop switch SB3 in the driver's room to disconnect the total contactor coil circuit, and the total contactor is de-energized and reset, thereby cutting off the circuit of the crane and the electric hydraulic rail clamp, so that the crane trolley stops running, and the electric hydraulic rail clamp is clamped under the action of the spring force.

[0049] In the embodiment one, the crane wind resistance and anti-slip control system provided by the application comprises an electric hydraulic rail clamp, a KT time relay and an emergency stop switch SBA are arranged in the control circuit of the electric hydraulic rail clamp, and the crane control circuit is cooperative, so that the electric hydraulic rail clamp can clamp the rail synchronously when the crane running mechanism stops, the double braking effect is realized, the crane slip phenomenon is effectively prevented, the overturning and collapse accidents caused by the slip are avoided, and the safety of personnel and equipment is ensured; and in the process, manual operation is not required, the timeliness of the electric hydraulic rail clamp clamping is effectively improved, and the safety hidden danger caused by manual negligence is avoided. Meanwhile, through the ingenious electrical control circuit design, the ground and air double control power-off mechanism is realized, the electric hydraulic rail clamp can clamp the rail quickly in the ground rail clamp control box or the driver's room in the air in an emergency, the reliability of the emergency braking is improved, the safety is greatly improved, and the operation is flexible and simple. Through the limit switch SQ0, the dangerous situation that the trolley runs before the electric hydraulic rail clamp is completely opened is effectively avoided, and through the cooperation of the limit switch and the oil pump motor, the leakage problem of the hydraulic system is effectively solved, and the smooth running of the crane trolley is ensured. Embodiment two

[0050] Corresponding to the crane wind resistance and anti-slip control system, the application further provides a crane, please refer to Figures 1-4 , specifically:

[0051] On the basis of the structure of the above-mentioned embodiment one, the crane provided by the application in the embodiment two comprises the crane wind resistance and anti-slip control system. Specifically, the crane comprises a walking wheel assembly 2 and a connecting flange 3; the walking wheel assembly 2 is arranged on the rail and connected with the driving device of the trolley.

[0052] The electric hydraulic rail clamp is slidably arranged on the 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 with the connecting rod mechanism 5 and used for providing power for the connecting rod mechanism 5; the connecting rod mechanism 5 is connected with 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 the electric control box 9; and the electric control box 9 is electrically connected with the hydraulic system 4, the limit switch 7 and the emergency stop switch SBA 8.

[0053] In the embodiment of the present application, the walking wheel assembly is arranged on the rail and connected with the trolley driving device, so that the trolley can be ensured to operate stably. The electric hydraulic rail clamp is arranged on the rail through the connecting flange and is energized by the hydraulic system for the connecting rod mechanism, and the connecting rod mechanism drives the clamp to act, so that the rail is clamped and released, and the crane is effectively prevented from sliding. The limit switch is arranged on one side of the clamp, so that the state of the clamp can be accurately monitored, and the reliability of the rail clamp is ensured. The emergency stop switch SBA is arranged, so that the operator on the ground can quickly cut off the main circuit in an emergency, and the safety of the equipment and the operator is ensured. The whole system cooperates with each other, and the safety, stability and reliability of the crane operation are improved.

[0054] The solutions of the present application have been described in detail above with reference to the drawings. In the above embodiments, the description of each embodiment has its own focus, and the parts not described in detail in a certain embodiment can be referred to the relevant description of other embodiments. It should also be known by those skilled in the art that the actions and modules involved in the specification are not necessarily required by the present application. In addition, it can be understood that the steps in the method embodiments of the present application can be adjusted, combined and reduced in sequence according to actual needs, and the modules in the device embodiments of the present application can be combined, divided and reduced according to actual needs.

[0055] The above has described various embodiments of the present application, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The selection of the terms used herein is intended to best explain the principles, practical application or improvement of the technology in the market of the embodiments, or to enable other ordinary skilled persons 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 clamp; The control circuit of the electro-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 electro-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 de-energized, the power-off delay normally open contact of the KT time relay is disconnected after a preset time, thereby de-energizing the trolley brake contactor KM7, and then de-energizing the solenoid valve of the electro-hydraulic rail clamp, and the crane is braked. At the same time, the electro-hydraulic rail clamp performs anti-slip control on the crane under the action of the spring; The control circuit of the electric hydraulic rail clamp also includes an emergency stop switch SBA, a limit switch SQ0 and an intermediate contactor K01; 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 connected in series to the main contactor control circuit; the normally open contact of the limit switch SQ0 is connected in series to the control circuit of the contactor KM5; The K01 intermediate contactor is connected in parallel to the control circuit of the trolley brake contactor KM7; 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.

2. The crane anti-wind and anti-slip control system according to claim 1 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.

3. The crane anti-wind and anti-slip control system according to claim 1 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.

4. A crane, characterized in that: The crane anti-wind and anti-slip control system comprises the one described in any one of claims 1-3.

5. The crane according to claim 4, characterized in that It includes a travel wheel assembly (2) and a connecting flange (3); The traveling 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 via 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 to 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).

Images