Bridge crane braking system and method

Abstract

The embodiment of the invention discloses a bridge crane braking system and method.The bridge crane braking system comprises a steel wire rope reel, a safety braking assembly, a hydraulic pipeline assembly and a hydraulic functional assembly.The technical scheme is mainly applied to high-heat, heavy-weight and dangerous production occasions such as molten metal hoisting, and the safety braking assembly is provided with a main braking assembly and an auxiliary braking assembly; according to the technical scheme, when the pressure intensity of the main braking assembly is abnormal, it can be judged that the main braking assembly breaks down, the auxiliary braking assembly is started to brake the steel wire rope reel, firstly, when the main braking assembly breaks down suddenly, the auxiliary braking assembly can take over the braking function, and accidents in the lifting process are avoided; and meanwhile, when the auxiliary brake assembly works, the main brake assembly can be checked and maintained, faults can be eliminated, so that the influence on hoisting can be avoided, and the production efficiency is improved.

Description

Technical Field

[0001] The embodiments of the present application relate to the technical field of lifting machinery, and in particular to a braking system and method for a bridge crane. Background Art

[0002] Safety brakes are primarily used to hold a crane in motion when it stops, playing a crucial role in ensuring safety in certain operating conditions. For example, in hoisting mechanisms with particularly stringent safety requirements, a mechanical safety brake is installed on the wire rope drum to prevent accidents caused by damage to the hoist's drive mechanism. This is particularly true for cranes handling molten metal.

[0003] The existing safety brake has a high failure rate during actual use, and problems such as hydraulic cylinder oil leakage and hydraulic system failure often occur, affecting the normal operation of the safety brake. The troubleshooting and emergency treatment time is long, which seriously restricts the normal operation of the bridge crane. Summary of the Invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0005] To this end, a first aspect of the present invention provides a bridge crane braking system.

[0006] A second aspect of the present invention provides a safe braking method for a bridge crane.

[0007] In view of this, according to a first aspect of an embodiment of the present application, a bridge crane braking system is proposed, comprising:

[0008] A wire rope drum connected to an external lifting drive device, wherein there are two wire rope drums, and the two wire rope drums are arranged opposite to each other;

[0009] Safety brake assemblies, the number of which is two, which are arranged at one end away from the wire rope drum, and the safety brake assemblies are used to brake the wire rope drum;

[0010] The safety brake assembly includes a main brake assembly, an auxiliary brake assembly and an emergency assembly;

[0011] The emergency component is used to monitor the pressure of the main brake component, close the main brake component and start the auxiliary brake component, and manually start the auxiliary brake component;

[0012] Each group of the safety brake assemblies comprises four main brake assemblies and four auxiliary brake assemblies;

[0013] There are two hydraulic pipeline assemblies, one end of each of which is connected to the two safety brake assemblies respectively;

[0014] A hydraulic energy supply component is connected to the two hydraulic pipeline components.

[0015] In a feasible implementation manner, the main brake assembly includes:

[0016] Master hydraulic cylinder;

[0017] A first pressure valve is provided on the master hydraulic cylinder and is connected to the hydraulic pipeline assembly.

[0018] In a feasible embodiment, the auxiliary brake assembly includes:

[0019] A secondary hydraulic cylinder, the secondary hydraulic cylinder is used to brake the wire rope drum in place of the main hydraulic cylinder;

[0020] A second pressure valve is provided on the auxiliary hydraulic cylinder and is connected to the hydraulic pipeline assembly.

[0021] In a feasible implementation, the emergency component includes:

[0022] a first hydraulic pressure sensor, the first hydraulic pressure sensor being a double-contact sensor and being used to detect the pressures of the master hydraulic cylinder and the auxiliary hydraulic cylinder;

[0023] a second hydraulic pressure sensor, the second hydraulic pressure sensor being used to detect the pressure of the hydraulic pipeline assembly;

[0024] A flow sensor, the flow sensor is used to detect the liquid flow of the hydraulic pipeline assembly;

[0025] An alarm component, the alarm component is used to emit an audible and visual alarm;

[0026] A logic controller is electrically connected to the accumulator, the first hydraulic pressure sensor and the flow sensor.

[0027] In a feasible embodiment, the hydraulic pipeline assembly includes:

[0028] a main pipe, one end of which is connected to the hydraulic energy supply assembly;

[0029] a first branch pipeline, the first branch pipeline being connected to the main pipeline, the first branch pipeline being in an I-shape, and each end point of the first branch pipeline being connected to one of the main brake assemblies;

[0030] The second branch pipeline is connected to the main pipeline, the second branch pipeline is "H"-shaped, and each end point of the second branch pipeline is connected to one of the auxiliary brake components.

[0031] In a feasible embodiment, the hydraulic energy supply component includes:

[0032] a first hydraulic station, the first hydraulic station being used to supply fluid and pressure to the hydraulic pipeline assembly on one side;

[0033] A second hydraulic station, which supplies fluid and pressure to the hydraulic pipeline assembly on the other side;

[0034] a first total pressure valve, the first total pressure valve connecting the first hydraulic station and the hydraulic pipeline assembly on one side;

[0035] A second total pressure valve is provided, wherein the second total pressure valve connects the second hydraulic station and the hydraulic pipeline assembly on the other side.

[0036] In a feasible embodiment, the hydraulic energy supply component further includes:

[0037] a through pipe, wherein both ends of the through pipe are respectively connected to the first total pressure valve and the second total pressure valve;

[0038] A through-pressure valve is provided on the through-pipe.

[0039] In a feasible implementation manner, the emergency component further includes:

[0040] An emergency pull rod, one end of which has a handle, and the other end of which is arranged on the movable rod of the auxiliary hydraulic cylinder;

[0041] An accumulator acts on the emergency pull rod and is electrically connected to a logic controller.

[0042] According to a second aspect of an embodiment of the present application, a bridge crane safety braking method is provided, which is applied to any one of the above-mentioned bridge crane braking systems, comprising:

[0043] When the emergency component detects that the pressure and flow of the hydraulic pipeline component are abnormal, the two fluid supply devices of the hydraulic function component are connected;

[0044] When the emergency component detects that the main brake component has a pressure anomaly, the component performing the braking function is switched from the main brake component to the auxiliary brake component;

[0045] When the emergency component detects that the pressure of the hydraulic pipeline component is too low to start the auxiliary brake component, the auxiliary brake component is started through the emergency component.

[0046] In a feasible implementation, it further includes:

[0047] When the pressure of the brake system and / or the hydraulic pipeline assembly on one side is lower than 90% of the rated value and lasts for more than 3 seconds, the emergency component will issue a level 1 alarm;

[0048] When the pressure of the brake system and / or the hydraulic pipeline assembly on one side continues to drop, or when a hydraulic oil leak is detected, the emergency component issues a secondary alarm;

[0049] When abnormal pressure occurs in both the braking systems and / or the hydraulic pipeline components on both sides and the pressure is lower than 70% of the rated value, the emergency component will issue a third-level alarm;

[0050] When the emergency component is not reset, the emergency component issues a level 3 alarm.

[0051] Compared with the prior art, the present invention has at least the following beneficial effects: the present technical solution is mainly used in high-temperature, heavy-weight and dangerous production occasions such as molten metal lifting. Its safety brake assembly has a main brake assembly and an auxiliary brake assembly. When a pressure abnormality occurs in the main brake assembly, it can be judged that the main brake assembly has failed. The present technical solution and the auxiliary brake assembly are started to brake the wire rope drum. First, the present technical solution can allow the auxiliary brake assembly to take over the braking function when the main brake assembly suddenly fails, thereby avoiding accidents during the lifting process and improving production safety. At the same time, the main brake assembly can be inspected, repaired and troubleshooted while the auxiliary brake assembly is working, thereby avoiding affecting the lifting process and improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0052] Various other advantages and benefits will become apparent to those skilled in the art upon reading the detailed description of the preferred embodiment below. The accompanying drawings are for illustration purposes only and are not to be considered as limiting the present application. The same reference symbols are used throughout the drawings to represent the same components. In the drawings:

[0053] Figure 1 A structural block diagram of a bridge crane braking system according to an embodiment of the present application;

[0054] Figure 2 This is a partially enlarged structural block diagram of a safety brake assembly according to an embodiment of the present application.

[0055] in, Figure 1-2 The corresponding relationship between the reference numerals and component names is as follows:

[0056] 100, wire rope drum; 200, safety brake assembly; 300, hydraulic pipeline assembly; 400, hydraulic energy supply assembly;

[0057] 210, main brake assembly; 220, auxiliary brake assembly; 230, emergency assembly;

[0058] 310, main pipeline; 320, first branch pipeline; 330, second branch pipeline;

[0059] 410, first hydraulic station; 420, second hydraulic station; 430, first total pressure valve; 440, second total pressure valve; 450, through pipe; 460, through pressure valve;

[0060] 231. Emergency pull rod; 232. Accumulator. DETAILED DESCRIPTION

[0061] In order to better understand the above technical solution, the technical solution of the embodiment of the present application is described in detail below through the accompanying drawings and specific embodiments. It should be understood that the embodiment of the present application and the specific features in the embodiment are detailed descriptions of the technical solution of the embodiment of the present application, rather than limitations on the technical solution of the present application. In the absence of conflict, the embodiment of the present application and the technical features in the embodiment can be combined with each other.

[0062] like Figure 1-2 As shown, according to the first aspect of the embodiment of the present application, a bridge crane braking system is proposed, comprising: a wire rope drum 100, wherein the wire rope drum 100 is connected to an external lifting drive device, and the number of the wire rope drums 100 is two, and the two wire rope drums 100 are arranged opposite to each other; a safety brake assembly 200, wherein the number of the safety brake assembly 200 is two groups, and the safety brake assembly 200 is arranged at one end away from the wire rope drum 100, and the safety brake assembly 200 is used to brake the wire rope drum 100; the safety brake assembly 200 includes a main brake assembly 210, an auxiliary brake assembly 220 and Emergency component 230; the emergency component 230 is used to monitor the pressure of the main brake component 210, close the main brake component 210 and start the auxiliary brake component 220, and manually start the auxiliary brake component 220; each group of the safety brake component 200 has four main brake components 210 and four auxiliary brake components 220; hydraulic pipeline components 300, the number of the hydraulic pipeline components 300 is two, and one end of the two hydraulic pipeline components 300 is respectively connected to the two safety brake components 200; hydraulic energy supply component 400, the hydraulic energy supply component 400 is connected to the two hydraulic pipeline components 300.

[0063] The bridge crane braking system provided in the embodiment of the present application includes a wire rope drum 100, a safety brake assembly 200, a hydraulic pipeline assembly 300 and a hydraulic function assembly.

[0064] There are two wire rope drums 100 . In actual use, the wire rope drums 100 are used to lift heavy objects on both sides.

[0065] There are two sets of safety brake assemblies 200, each mounted on the outer ends of two wire rope drums 100. The safety brake assemblies 200 are used to brake the wire rope drums 100. The safety brake assemblies 200 include a main brake assembly 210, a secondary brake assembly 220, and an emergency assembly 230. The emergency assembly 230 monitors the main brake assembly 210. If a malfunction occurs in the main brake assembly 210, the emergency assembly 230 controls the main control assembly to close and open the secondary brake assembly 220. The emergency assembly 230 can also be activated manually or by external pressure.

[0066] The hydraulic function component is used to supply fluid and energy to the safety brake component 200 , thereby realizing the braking function of the safety brake component 200 .

[0067] The hydraulic pipeline assembly 300 is connected to the hydraulic function assembly and the safety brake assembly 200 , and the hydraulic pipeline assembly 300 can supply energy to the main brake assembly 210 and the auxiliary brake assembly 220 respectively.

[0068] This technical solution is mainly used in high-temperature, heavy and dangerous production occasions such as molten metal lifting. Its safety brake component 200 has a main brake component 210 and an auxiliary brake component 220. When the main brake component 210 has a pressure abnormality, it can be judged that the main brake component 210 has a fault. This technical solution and the auxiliary brake component 220 are started to brake the wire rope drum 100. First, this technical solution can allow the auxiliary brake component 220 to take over the braking function when the main brake component 210 suddenly fails, avoiding accidents during the lifting process and improving production safety. At the same time, when the auxiliary brake component 220 is working, the main brake component 210 can be inspected, repaired and faults can be eliminated, thereby avoiding affecting the lifting process and improving production efficiency.

[0069] like Figure 1-2 As shown, the main brake assembly 210 includes: a main hydraulic cylinder; a first pressure valve, the first pressure valve is arranged in the main hydraulic cylinder, and the first pressure valve is connected to the hydraulic pipeline assembly 300.

[0070] In this technical solution, the main brake assembly 210 includes a main hydraulic cylinder and a first pressure valve, wherein the main hydraulic cylinder is used to brake the wire rope drum 100, and the main hydraulic cylinder is connected to the hydraulic pipeline assembly 300 through the first pressure valve. When the emergency assembly 230 detects that the main hydraulic cylinder has a fault, the first pressure valve is closed.

[0071] like Figure 1-2 As shown, the auxiliary brake assembly 220 includes: an auxiliary hydraulic cylinder, which is used to brake the wire rope drum 100 after replacing the main hydraulic cylinder; a second pressure valve, which is arranged in the auxiliary hydraulic cylinder and connected to the hydraulic pipeline assembly 300.

[0072] In this technical solution, the auxiliary brake assembly 220 includes an auxiliary hydraulic cylinder and a second pressure valve, wherein the auxiliary hydraulic cylinder is used to take over braking when the main hydraulic cylinder fails. Under normal operating conditions, the second pressure valve is in a closed state. When the main hydraulic cylinder fails, the second pressure valve is opened.

[0073] The first pressure valve and the second pressure valve are made of materials that are corrosion-resistant and adaptable to high temperatures.

[0074] like Figure 1-2 As shown, the emergency component 230 includes: a first hydraulic sensor, which is a double-contact sensor and is used to detect the pressure of the main hydraulic cylinder and the auxiliary hydraulic cylinder; a second hydraulic sensor, which is used to detect the pressure of the hydraulic pipeline assembly 300; a flow sensor, which is used to detect the liquid flow of the hydraulic pipeline assembly 300; an alarm component, which is used to emit sound and light alarms; and a logic controller, which is electrically connected to the accumulator, the first hydraulic sensor and the flow sensor.

[0075] In this technical solution, the emergency component 230 includes a first hydraulic pressure sensor, a second hydraulic pressure sensor, a flow sensor, an alarm component and a logic controller.

[0076] Among them, the first hydraulic sensor adopts a double-contact sensor, and the first hydraulic cylinder sensor is used to monitor the pressure of the main hydraulic cylinder and the auxiliary hydraulic cylinder;

[0077] The second hydraulic sensor is used to monitor the pressure of the hydraulic pipeline assembly 300 .

[0078] Among them, the protection level of the first hydraulic sensor and the second hydraulic sensor is IP68 (dust and water proof), which is suitable for the dust and splash environment of the metallurgical workshop. The accuracy and response are as follows: the pressure detection range is 0-40MPa, the repeatability is ≤±0.5% FS, and the response time is <10ms.

[0079] The flow sensor is used to monitor the flow of the hydraulic pipeline assembly 300 .

[0080] Among them, the alarm component is used to emit sound and light alarms when the first hydraulic sensor, the second hydraulic sensor and the flow sensor detect abnormalities, reminding the staff to carry out maintenance in time.

[0081] like Figure 1-2 As shown, the hydraulic pipeline assembly 300 includes: a main pipeline 310, one end of which is connected to the hydraulic energy supply assembly 400; a first branch pipeline 320, the first branch pipeline 320 is connected to the main pipeline 310, the first branch pipeline 320 is in the shape of an "I", and each end point of the first branch pipeline 320 is connected to one of the main brake assemblies 210; a second branch pipeline 330, the second branch pipeline 330 is connected to the main pipeline 310, the second branch pipeline 330 is in the shape of an "H", and each end point of the second branch pipeline 330 is connected to one of the auxiliary brake assemblies 220.

[0082] In this technical solution, the hydraulic pipeline assembly 300 includes a main pipeline 310 , a first branch pipeline 320 and a second branch pipeline 330 .

[0083] One end of the main line 310 is connected to the hydraulic power supply assembly 400, and the other end of the main line 310 connects the first branch line 320 and the second branch line 330. The first branch line 320 is in the shape of an "I" character, with its four endpoints connected to the four main brake assemblies 210. In this embodiment, the four endpoints of the first branch line 320 are connected to the four first pressure valves. The second branch line 330 is in the shape of an "H" character, with its four endpoints connected to the four auxiliary brake assemblies 220. In this embodiment, the four endpoints of the second branch line 330 are connected to the four second pressure valves.

[0084] This technical solution divides the branch pipe of the hydraulic pipeline assembly 300 into two parts, thereby realizing the supply of fluid and pressure to the main hydraulic cylinder and the auxiliary hydraulic cylinder respectively. The first branch pipe 320 and the second branch pipe 330 are designed as "I" shape and "H" shape, so that the first branch pipe 320 and the second branch pipe 330 do not overlap, which is convenient for inspection and maintenance. At the same time, the arrangement of the main brake assembly 210 and the auxiliary brake assembly 220 in this embodiment is as follows Figure 1 As shown, the main brake assembly 210 is suitable for supplying fluid through the rear end, and the auxiliary brake assembly 220 is suitable for supplying fluid through the side. The shapes of the first branch pipe and the second branch pipe can match the fluid supply methods of the main brake assembly 210 and the auxiliary brake assembly 220.

[0085] like Figure 1-2As shown, the hydraulic power supply component 400 includes: a first hydraulic station 410, the first hydraulic station 410 is used to supply liquid and pressure to the hydraulic pipeline component 300 on one side; a second hydraulic station 420, the second hydraulic station 420 is used to supply liquid and pressure to the hydraulic pipeline component 300 on the other side; a first total pressure valve 430, the first total pressure valve 430 connects the first hydraulic station 410 and the hydraulic pipeline component 300 on one side; a second total pressure valve 440, the second total pressure valve 440 connects the second hydraulic station 420 and the hydraulic pipeline component 300 on the other side.

[0086] In this technical solution, the hydraulic energy supply component 400 includes a first hydraulic station 410, a second hydraulic station 420, a first total pressure valve 430 and a second total pressure valve 440. In this technical solution, the hydraulic energy supply component 400 is configured with two groups of hydraulic stations, which can respectively supply energy and fluid to the safety brake components 200 on both sides. This technical solution can make the fluid supply power more stable.

[0087] like Figure 1-2 As shown, the hydraulic energy supply component 400 also includes: a through pipe 450, the two ends of which are respectively connected to the first total pressure valve 430 and the second total pressure valve 440; a through pressure valve 460, and the through pressure valve 460 is arranged on the through pipe 450.

[0088] In this technical solution, the hydraulic energy supply assembly 400 also includes a through-pipe 450 and a through-pressure valve 460. The through-pipe 450 connects the first and second total pressure valves 430 and 440. The through-pressure valve 460 is mounted on the through-pipe 450. During normal operation, the through-pressure valve 460 is normally closed. However, if a failure occurs in the first or second hydraulic station 410 and 420, the through-pressure valve 460 opens. This allows the hydraulic station on either side to supply fluid and pressure to the safety brake assemblies 200 on both sides, maintaining the operation of the brake system. During this process, personnel can repair the hydraulic station on either side. This technical solution avoids the technical problem of troubleshooting hindering the normal operation of the bridge crane.

[0089] like Figure 1-2 As shown, the emergency component 230 also includes: an emergency pull rod 231, one end of which has a handle, and the other end of the emergency pull rod 231 is arranged on the movable rod of the auxiliary hydraulic cylinder; an accumulator, which acts on the emergency pull rod 231 and is electrically connected to the logic controller.

[0090] In this technical solution, the emergency assembly 230 also includes an emergency pull rod 231 and an accumulator. When the hydraulic pressure of the braking system is reduced too much (below 70% of the rated value), the auxiliary brake assembly 220 may fail to start. Therefore, an emergency pull rod 231 and an accumulator are added. The accumulator can drive the emergency pull rod 231, thereby driving the auxiliary brake assembly 220 through external pressure. At the same time, the stress rod is designed to be in the shape of a pull rod, and the staff can also manually apply pressure to the auxiliary brake assembly 220 through the emergency pull rod 231.

[0091] like Figure 1-2 As shown, according to the second aspect of the embodiment of the present application, a bridge crane safety braking method is proposed, comprising:

[0092] When the emergency component 230 detects that the pressure and flow of the hydraulic pipeline component 300 are abnormal, the two fluid supply devices of the hydraulic function component are connected;

[0093] When the emergency component 230 detects that the main brake component 210 has a pressure anomaly, the component performing the braking function is switched from the main brake component 210 to the auxiliary brake component 220;

[0094] When the emergency component 230 detects that the pressure of the hydraulic pipeline component 300 is too low to activate the auxiliary brake component 220 , the auxiliary brake component 220 is activated through the emergency component 230 .

[0095] The two fluid supply devices of the hydraulic function component are the first hydraulic station 410 and the second hydraulic station 420 in this embodiment. When the emergency component 230 detects that the pressure and flow of the hydraulic pipeline component 300 are abnormal, it can be considered that one side of the hydraulic station has failed. Therefore, by opening the through pressure valve 460, the braking function can be continued through the intact single-side hydraulic station.

[0096] When the emergency component 230 detects that a pressure abnormality occurs in the main brake component 210, it can be considered that the main hydraulic cylinder in this embodiment is leaking, so the component performing the braking function is switched from the main brake component 210 to the auxiliary brake component 220. In this embodiment, the fluid supply to the main hydraulic cylinder through the first branch pipe is switched to the fluid supply to the auxiliary hydraulic cylinder through the second branch pipe.

[0097] When the emergency component 230 detects that the pressure of the hydraulic pipeline assembly 300 is too low to activate the auxiliary brake assembly 220, the auxiliary brake assembly 220 is activated through the emergency component 230. Usually, this situation may occur when the pressure of the hydraulic pipeline assembly 300 is lower than 70% of the rated value. In this embodiment, the auxiliary hydraulic cylinder is activated by the accumulator 232 or manually activating the emergency pull rod 231.

[0098] like Figure 1-2As shown, it also includes:

[0099] When the pressure of the brake system and / or the hydraulic pipeline assembly 300 on one side is lower than 90% of the rated value and lasts for more than 3 seconds, the emergency assembly 230 issues a level 1 alarm;

[0100] When the pressure of the brake system and / or the hydraulic pipeline assembly 300 on one side continues to drop, or when a hydraulic oil leak is detected, the emergency assembly 230 issues a secondary alarm;

[0101] When abnormal pressure occurs in both the braking systems and / or the hydraulic pipeline assembly 300 on both sides and the pressure is lower than 70% of the rated value, the emergency assembly 230 issues a level 3 alarm;

[0102] When the emergency component 230 is not reset, the emergency component 230 issues a level 3 alarm.

[0103] In this technical solution, a Level 1 warning must be triggered for at least three seconds to avoid instantaneous interference; a Level 3 warning has no delay and responds directly. Priority: Level 3 warning > Level 2 warning > Level 1 warning.

[0104] This technical solution also features self-test and reset logic. Upon system startup, the system automatically performs a self-test, which includes checking the open / close status of all valves and verifying the pressure in the emergency lever 231 energy storage device. Once the fault is corrected, the system must be manually reset and the sensor recalibrated.

[0105] In the present invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "plurality" refers to two or more, unless expressly limited otherwise. Terms such as "installed," "connected," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; "connected" can mean a direct connection or an indirect connection through an intermediary. Those skilled in the art will understand the specific meanings of these terms in the present invention based on specific circumstances.

[0106] In the description of the present invention, it should be understood that the directions or positional relationships indicated by terms such as "up", "down", "left", "right", "front" and "back" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or unit referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0107] Throughout this specification, terms such as "one embodiment," "some embodiments," and "specific embodiments" mean that the specific features, structures, materials, or characteristics described in conjunction with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, schematic representations of these terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0108] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A bridge crane braking system, characterized in that: include: A wire rope drum connected to an external lifting drive device, wherein there are two wire rope drums, and the two wire rope drums are arranged opposite to each other; Safety brake assemblies, the number of which is two, which are arranged at one end away from the wire rope drum, and the safety brake assemblies are used to brake the wire rope drum; The safety brake assembly includes a main brake assembly, an auxiliary brake assembly and an emergency assembly; The emergency component is used to monitor the pressure of the main brake component, close the main brake component and start the auxiliary brake component, and manually start the auxiliary brake component; Each group of the safety brake assemblies comprises four main brake assemblies and four auxiliary brake assemblies; There are two hydraulic pipeline assemblies, one end of each of which is connected to the two safety brake assemblies respectively; A hydraulic energy supply component is connected to the two hydraulic pipeline components.

2. The bridge crane braking system according to claim 1, characterized in that: The main brake assembly comprises: Master hydraulic cylinder; A first pressure valve is provided on the master hydraulic cylinder and is connected to the hydraulic pipeline assembly.

3. The bridge crane braking system according to claim 2, characterized in that: The auxiliary brake assembly comprises: A secondary hydraulic cylinder, the secondary hydraulic cylinder is used to brake the wire rope drum in place of the main hydraulic cylinder; A second pressure valve is provided on the auxiliary hydraulic cylinder and is connected to the hydraulic pipeline assembly.

4. The bridge crane braking system according to claim 3, characterized in that: The emergency components include: a first hydraulic pressure sensor, the first hydraulic pressure sensor being a double-contact sensor and being used to detect the pressures of the master hydraulic cylinder and the auxiliary hydraulic cylinder; a second hydraulic pressure sensor, the second hydraulic pressure sensor being used to detect the pressure of the hydraulic pipeline assembly; A flow sensor, the flow sensor is used to detect the liquid flow of the hydraulic pipeline assembly; An alarm component, the alarm component is used to emit an audible and visual alarm; A logic controller is electrically connected to the accumulator, the first hydraulic pressure sensor and the flow sensor.

5. The bridge crane braking system according to claim 1, characterized in that: The hydraulic pipeline assembly includes: a main pipe, one end of which is connected to the hydraulic energy supply assembly; a first branch pipeline, the first branch pipeline being connected to the main pipeline, the first branch pipeline being in an "I" shape, and each end point of the first branch pipeline being connected to one of the main brake assemblies; The second branch pipeline is connected to the main pipeline, the second branch pipeline is "H"-shaped, and each end point of the second branch pipeline is connected to one of the auxiliary brake components.

6. The bridge crane braking system according to claim 5, characterized in that: The hydraulic energy supply component includes: a first hydraulic station, the first hydraulic station being used to supply fluid and pressure to the hydraulic pipeline assembly on one side; A second hydraulic station, which supplies fluid and pressure to the hydraulic pipeline assembly on the other side; a first total pressure valve, the first total pressure valve connecting the first hydraulic station and the hydraulic pipeline assembly on one side; A second total pressure valve is provided, wherein the second total pressure valve connects the second hydraulic station and the hydraulic pipeline assembly on the other side.

7. The bridge crane braking system according to claim 6, characterized in that: The hydraulic energy supply assembly also includes: a through pipe, wherein both ends of the through pipe are respectively connected to the first total pressure valve and the second total pressure valve; A through-pressure valve is provided on the through-pipe.

8. The bridge crane braking system according to claim 4, characterized in that: The emergency components also include: An emergency pull rod, one end of which has a handle, and the other end of which is arranged on the movable rod of the auxiliary hydraulic cylinder; An accumulator acts on the emergency pull rod and is electrically connected to a logic controller.

9. A bridge crane safety braking method, characterized in that: The bridge crane braking system applied to any one of 1-8 above comprises: When the emergency component detects that the pressure and flow of the hydraulic pipeline component are abnormal, the two fluid supply devices of the hydraulic function component are connected; When the emergency component detects that the main brake component has a pressure anomaly, the component performing the braking function is switched from the main brake component to the auxiliary brake component; When the emergency component detects that the pressure of the hydraulic pipeline component is too low to start the auxiliary brake component, the auxiliary brake component is started through the emergency component.

10. The bridge crane safety braking method according to claim 9, characterized in that: Also includes: When the pressure of the brake system and / or the hydraulic pipeline assembly on one side is lower than 90% of the rated value and lasts for more than 3 seconds, the emergency component will issue a level 1 alarm; When the pressure of the brake system and / or the hydraulic pipeline assembly on one side continues to drop, or when a hydraulic oil leak is detected, the emergency component issues a secondary alarm; When abnormal pressure occurs in both the braking systems and / or the hydraulic pipeline components on both sides and the pressure is lower than 70% of the rated value, the emergency component will issue a third-level alarm; When the emergency component is not reset, the emergency component issues a level 3 alarm.

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