Safe jacking control system

Abstract

The invention discloses a safe jacking control system which comprises a monitoring device, a handle reversing device and a control device, the monitoring device is used for monitoring assembly and disassembly work of jacking operation, the handle reversing device comprises a handle assembly and a locking assembly, the handle assembly can be in driving connection with a reversing valve of a jacking hydraulic cylinder, and the locking assembly can be in driving connection with the reversing valve of the jacking hydraulic cylinder. The locking assembly is used for limiting the deflection direction of the handle assembly, and the control device is in communication connection with the monitoring device and the locking assembly and is configured to control the locking assembly to limit at least one deflection direction of the handle assembly according to the monitoring result of the monitoring device. Therefore, major accidents caused by non-standard operation of mounting and dismounting workers can be avoided, and prevention and prevention of jacking accidents in the tower ascending or descending process are truly achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of tower cranes, and in particular relates to a safe lifting control system. Background Art

[0002] At present, when tower cranes are raising or lowering towers, hydraulic jacking systems are used to drive the climbing mechanism to rise and fall, thereby adding or reducing sections. The hydraulic jacking system of a tower crane is mainly composed of a jacking hydraulic cylinder, a hydraulic pump station and oil pipes. The hydraulic pump station provides hydraulic oil with a certain pressure and flow rate to the jacking hydraulic cylinder, thereby driving the jacking hydraulic cylinder to perform telescopic movement, and then driving the climbing mechanism to rise and fall.

[0003] However, tower cranes are most likely to have major accidents during the process of raising and lowering the tower. If an accident occurs during the jacking operation of raising or lowering the tower, it will generally cause the tower crane to collapse and be damaged, and the installation workers will be injured or killed. Most of the accidents are caused by the improper operation of the installation workers. For example, the lifting beam begins to unload before it is hung on the step, and the cylinder begins to push out before the support rod is firmly stepped. Summary of the invention

[0004] In view of the above-mentioned defects or shortcomings, the present invention provides a safe jacking control system, which aims to solve the technical problem of major accidents caused by improper operation of installation workers during the jacking operation of raising or lowering the tower.

[0005] To achieve the above-mentioned objectives, the present invention provides a safe jacking control system, wherein the safe jacking control system includes a monitoring device, a handle reversing device and a control device; the monitoring device is used to monitor the installation and disassembly work of the jacking operation; the handle reversing device includes a handle assembly and a locking assembly, the handle assembly can be connected to the reversing valve drive of the jacking hydraulic cylinder, and the locking assembly is used to limit the swing direction of the handle assembly; the control device is respectively communicated with the monitoring device and the locking assembly and is configured to: control the locking assembly to limit at least one swing direction of the handle assembly according to the monitoring result of the monitoring device.

[0006] In one embodiment of the present invention, the locking assembly includes a fixed seat, a first movable block and two first control locks, the fixed seat is fixedly arranged near the handle assembly, the two first control locks are arranged on the fixed seat in sequence along the swing direction of the handle assembly, the telescopic lock cores of the two first control locks can be telescopically arranged in parallel toward the same end, and can enclose a locking space when the telescopic lock cores are both extended, the first movable block is connected to the handle assembly and placed in the locking space, so that when the telescopic lock core of at least one first control lock is extended, at least one swing direction of the handle assembly can be restricted, and the control device is respectively connected to the two first control locks in communication and is further configured as follows:

[0007] When it is determined according to the monitoring result of the monitoring device that the cylinder load needs to be prohibited, the telescopic lock core of the first control lock that can limit the swing direction of the handle assembly used to drive the lifting hydraulic cylinder to extend is controlled to extend;

[0008] When it is determined according to the monitoring result of the monitoring device that the cylinder unloading needs to be prohibited, the telescopic lock core of the first control lock that can limit the swing direction of the handle assembly for driving the jacking hydraulic cylinder to retract is controlled to extend.

[0009] In one embodiment of the present invention, the handle assembly includes a sway drive rod, an unlocking module and a reversing handle seat. The sway drive rod is driven and connected to the reversing valve of the lifting hydraulic cylinder. The unlocking module includes a locking member and an unlocking member that can be locked or unlocked at the locking member. The sway drive rod is provided with a first movable block and one of the locking member and the unlocking member in sequence in the direction toward the reversing valve away from the lifting hydraulic cylinder. The other of the locking member and the unlocking member is provided on the reversing handle seat. The reversing handle seat is movably arranged and is used to drive the sway drive rod to sway when the unlocking member is locked to the locking member. The control device is also communicated with the unlocking member and is configured to: when it is determined that it is necessary to simultaneously prohibit the cylinder load and the cylinder unloading, control the unlocking member to unlock the locking member.

[0010] In one embodiment of the present invention, the unlocking member includes a second control lock, and the telescopic lock core of the second control lock can be extended into or retracted to exit the lock space formed by the locking member. The control device is communicatively connected to the second control lock and is configured to: when it is determined that it is necessary to prohibit both cylinder loading and cylinder unloading at the same time, control the telescopic lock core of the second control lock to retract and exit the lock space of the locking member.

[0011] In one embodiment of the present invention, the locking member includes two one-way hinges, which are arranged in sequence along the swing direction of the swing drive rod so that the gap between the two one-way hinges forms a locking space, and the two one-way hinges are configured to rotate inward.

[0012] In one embodiment of the present invention, the yaw drive rod and the two first control locks are arranged on opposite sides of the fixed seat, and the fixed seat is provided with a first guide opening and a second guide opening which are arranged in parallel and are both in the shape of straight strips and are spaced apart in sequence along the length direction of the yaw drive rod. The first movable block is connected to the yaw drive rod by a first connecting component passing through the first guide opening, and one of the locking member and the unlocking member is connected to the yaw drive rod by a second connecting component passing through the second guide opening. The handle assembly also includes a guide rail, which is arranged parallel to the first guide opening and can be movably arranged for the reversing handle seat.

[0013] In one embodiment of the present invention, the handle assembly also includes a second movable block and a mounting plate. The second movable block is arranged on the same side as the two first control locks and is connected to the yaw drive rod through a second connecting assembly. The mounting plate is arranged on the second movable block and can be used for installing one of the locking member and the unlocking member.

[0014] In one embodiment of the present invention, the first connecting assembly and / or the second connecting assembly both include a mounting collar and a connecting rod. The mounting collar is sleeved on the yaw drive rod and there is a gap between the mounting collar and the yaw drive rod. The connecting rod passes through the corresponding guide opening to connect the mounting collar and the corresponding movable block.

[0015] In one embodiment of the present invention, the handle reversing device also includes an outer shell, which encloses an inner cavity for accommodating a handle assembly and a locking assembly, and the outer shell has a first outward extending opening and a second outward extending opening respectively corresponding to each other on two opposite sides of the outer shell. The first outward extending opening allows the yaw drive rod to extend to connect with the reversing valve drive of the lifting hydraulic cylinder, and the second outward extending opening allows the reversing handle seat to extend for manual operation.

[0016] In one embodiment of the present invention, the safety jacking control system also includes an alarm, and the control device is also connected to the alarm for communication and is configured to control the alarm to issue an alarm prompt for limiting the swing direction of the handle assembly.

[0017] Through the above technical solution, the safe lifting control system provided by the embodiment of the present invention has the following beneficial effects:

[0018] When the above-mentioned safe jacking control system is used, since it includes a monitoring device, a handle reversing device and a control device, the installation and disassembly work of the jacking operation can be monitored by the monitoring device, and the control device determines the swing direction of the handle assembly that needs to be restricted according to the monitoring result of the monitoring device, and the control device controls the locking assembly according to the swing direction of the handle assembly that needs to be restricted, so that the locking assembly restricts the swing direction of the handle assembly that needs to be restricted, and the installation workers cannot manually drive the handle assembly to swing in the restricted swing direction, thereby avoiding major accidents caused by improper operation of the installation workers, and truly realizing the prevention and blocking of jacking accidents during the process of raising or lowering the tower.

[0019] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings are used to provide a further understanding of the embodiments of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the embodiments of the present invention, but do not constitute a limitation on the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative work. In the accompanying drawings:

[0021] Figure 1 is a schematic structural diagram of an internal perspective of a handle reversing device according to an embodiment of the present invention;

[0022] Figure 2 is a structural schematic diagram of another internal perspective of a handle reversing device according to an embodiment of the present invention;

[0023] Figure 3 is a schematic structural diagram of a handle reversing device according to an embodiment of the present invention from an external perspective;

[0024] Figure 4 1 is a schematic structural diagram from another external perspective of a handle reversing device according to an embodiment of the present invention.

[0025] Description of Reference Numerals

[0026] 100 handle assembly 110 yaw drive rod

[0027] 120 Locking member 121 One-way hinge

[0028] 130 unlocking piece 140 reversing handle seat

[0029] 141 Moving seat 142 Handle body

[0030] 143 Installation space 150 Guide rail

[0031] 160 second movable block 170 mounting plate

[0032] 200 Locking assembly 210 Fixed seat

[0033] 211 first guide opening 212 second guide opening

[0034] 213 first connection component 214 second connection component

[0035] 215 Mounting collar 216 Connecting rod

[0036] 220 first movable block 230 first control lock

[0037] 300 housing 301 first outwardly extending opening

[0038] 302 Second extended opening 400 Alarm

[0039] 500 Main control circuit board DETAILED DESCRIPTION

[0040] The specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0041] The safety lifting control system of the present invention will be described below with reference to the accompanying drawings.

[0042] like Figure 1 and Figure 2 As shown, the present invention provides a safe lifting control system, wherein the safe lifting control system comprises:

[0043] Monitoring device, used to monitor the installation and removal work of the jacking operation;

[0044] The handle reversing device includes a handle assembly 100 and a locking assembly 200. The handle assembly 100 can be connected to the reversing valve of the lifting hydraulic cylinder, and the locking assembly 200 is used to limit the swing direction of the handle assembly 100.

[0045] The control device is respectively connected to the monitoring device and the locking assembly 200 and is configured as follows:

[0046] The locking assembly 200 is controlled to limit at least one swing direction of the handle assembly 100 according to the monitoring result of the monitoring device.

[0047] When the above-mentioned safe jacking control system is used, since it includes a monitoring device, a handle reversing device and a control device, the installation and disassembly work of the jacking operation can be monitored by the monitoring device, and the control device determines the swing direction of the handle assembly 100 that needs to be restricted according to the monitoring result of the monitoring device, and the control device controls the locking assembly 200 according to the swing direction of the handle assembly 100 that needs to be restricted, so that the locking assembly 200 limits the swing direction of the handle assembly 100 that needs to be restricted, and the installation workers cannot manually drive the handle assembly 100 to swing in the restricted swing direction, thereby avoiding major accidents caused by improper operation of the installation workers, and truly realizing the prevention and blocking of jacking accidents during the process of raising or lowering the tower.

[0048] Specifically, the monitoring device can be set as a machine vision device, which can monitor various key components (such as steps, standard section pins, jacking beams, etc.) during the jacking operation, and the control device can identify the current process step of the jacking operation according to the monitoring results of the monitoring device, and determine whether the current installation and disassembly work is in place. Of course, the present invention is not limited to this, and the monitoring device can also be set as a sensor device, and sensors can also be installed on various key components during the jacking operation to detect them.

[0049] More specifically, the control device may be further configured to:

[0050] When it is determined according to the monitoring result of the monitoring device that the cylinder load needs to be prohibited, the locking assembly 200 is controlled to switch to limit the swing direction of the handle assembly 100 used to drive the lifting hydraulic cylinder to extend;

[0051] When it is determined according to the monitoring result of the monitoring device that the cylinder unloading needs to be prohibited, the locking assembly 200 is controlled to switch to limit the swing direction of the handle assembly 100 for driving the lifting hydraulic cylinder to retract.

[0052] It can be understood that prohibiting cylinder loading means prohibiting the weight of the tower crane from being transferred to the jacking hydraulic cylinder, for example: the jacking beam is not hung properly, the upper part is not matched, etc. In this case, the locking assembly 200 should be switched to limit the swing direction of the handle assembly 100 used to drive the jacking hydraulic cylinder to extend; prohibiting cylinder unloading means prohibiting the weight on the jacking hydraulic cylinder from being transferred to the tower crane, for example: the support rod has not been stepped on, the standard pin shaft has not been installed, etc. In this case, the locking assembly 200 should be switched to limit the swing direction of the handle assembly 100 used to drive the jacking hydraulic cylinder to retract.

[0053] Please continue to see Figure 1 and Figure 2 In one embodiment of the present invention, the locking assembly 200 includes a fixed seat 210, a first movable block 220 and two first control locks 230. The fixed seat 210 is fixedly arranged near the handle assembly 100. The two first control locks 230 are arranged on the fixed seat 210 in sequence along the swing direction of the handle assembly 100. The telescopic lock cores of the two first control locks 230 can be telescopically arranged in parallel toward the same end, and can be enclosed to form a locking space when the telescopic lock cores are both extended. The first movable block 220 is connected to the handle assembly 100 and placed in the locking space, so that when the telescopic lock core of at least one first control lock 230 is extended, at least one swing direction of the handle assembly 100 can be restricted. The control device is respectively connected to the two first control locks 230 for communication and is further configured as follows:

[0054] When it is determined according to the monitoring result of the monitoring device that the cylinder load needs to be prohibited, the telescopic lock core of the first control lock 230 that can limit the swing direction of the handle assembly 100 used to drive the lifting hydraulic cylinder to extend is controlled to extend;

[0055] When it is determined according to the monitoring result of the monitoring device that the cylinder unloading needs to be prohibited, the telescopic lock core of the first control lock 230 that can limit the swing direction of the handle assembly 100 for driving the jacking hydraulic cylinder to retract is controlled to extend.

[0056] Therefore, during the process of lifting or lowering the tower, if it is determined according to the monitoring result of the monitoring device that the current installation and disassembly work has not been completed and it is necessary to prohibit the cylinder load, the telescopic lock core of a corresponding first control lock 230 can be controlled to extend to limit the swing movement of the handle assembly 100 toward one side of the first control lock 230, thereby limiting the handle assembly 100 from driving the reversing valve to switch to the lifting hydraulic cylinder for extension; if it is determined that the current installation and disassembly work has not been completed and it is necessary to prohibit the cylinder unloading, the telescopic lock core of another corresponding first control lock 230 can be controlled to extend to limit the swing movement of the handle assembly 100 toward one side of the first control lock 230, thereby limiting the handle assembly 100 from driving the reversing valve to switch to the lifting hydraulic cylinder for retraction. Then, through the setting of the first movable block 220 and the two first control locks 230, it is simpler and more reliable for the locking assembly 200 to limit the swing direction of the handle assembly 100.

[0057] Specifically, when the lower end of the handle assembly 100 is connected to the reversing valve of the lifting hydraulic cylinder, the telescopic lock cores of the two first control locks 230 can be set to be telescopically arranged downward in parallel, and the first movable block 220 is not only placed in the empty space formed by the telescopic lock cores of the two first control locks 230 being extended, but both ends of the first movable block 220 are extended to the lower side of the lock bodies of the two first control locks 230 in a one-to-one correspondence. At the same time, in the case where it is necessary to prohibit the oil cylinder from loading or unloading, only one corresponding telescopic lock core of the first control lock 230 can be extended, and the telescopic lock core of the other first control lock 230 can be retracted. In addition, in some emergency situations, the telescopic lock cores of the two first control locks 230 can be controlled to be extended at the same time to limit the two-way swing of the handle assembly 100.

[0058] In one embodiment of the present invention, the handle assembly 100 includes a sway drive rod 110, an unlocking module and a reversing handle seat 140. The sway drive rod 110 can be the original handle of the pump station and is connected to the reversing valve of the lifting hydraulic cylinder. The unlocking module includes a locking member 120 and an unlocking member 130 that can be locked or unlocked at the locking member 120. The sway drive rod 110 is sequentially provided with a first movable block 220 and one of the locking member 120 and the unlocking member 130 in the direction away from the reversing valve of the lifting hydraulic cylinder. The other of the locking member 120 and the unlocking member 130 is arranged on the reversing handle seat 140. The reversing handle seat 140 is movably arranged and used to drive the sway drive rod 110 to sway when the unlocking member 130 is locked to the locking member 120. The control device is also connected to the unlocking member 130 for communication and is configured as follows:

[0059] When it is determined that both cylinder loading and cylinder unloading need to be prohibited, the unlocking member 130 is controlled to be unlocked to the locking member.

[0060] Furthermore, by adding the reversing handle seat 140 and the unlocking module, the hand-driven part can be transferred from the sway drive rod 110 to the reversing handle seat 140, and after the reversing handle seat 140 establishes a connection with the sway drive rod 110 through the unlocking module, the hand-driven reversing handle seat 140 can drive the sway drive rod 110 to sway, and after the reversing handle seat 140 releases the connection with the sway drive rod 110 through the unlocking module, the hand-driven reversing handle seat 140 cannot drive the sway drive rod 110 to sway, so that in an emergency, the unlocking member 130 can be controlled by the control device to release the lock of the sway drive rod 110 by the reversing handle seat 140, so that even if the installation worker manually drives the reversing handle seat 140, it cannot drive the sway drive rod 110 to sway, thereby completely prohibiting the operation of the jacking hydraulic cylinder, and further avoiding major accidents caused by improper operation of the installation workers. Furthermore, whether it is necessary to prohibit both cylinder loading and cylinder unloading at the same time can be determined not only based on the monitoring result of the monitoring device, but also based on the input instruction received by the control device.

[0061] In one embodiment of the present invention, the unlocking member 130 includes a second control lock, the telescopic lock core of the second control lock can be extended into or retracted out of the lock opening space formed by the locking member 120, and the control device is communicatively connected with the second control lock and is further configured as follows:

[0062] When it is determined that both cylinder loading and cylinder unloading need to be prohibited, the telescopic lock core of the second control lock is controlled to retract and exit the lock opening space of the locking member 120 .

[0063] Specifically, the unlocking member 130 can be set as a second control lock that can be telescopically arranged with a telescopic lock core, and the second control lock has the same structure as the first control lock 230, which is convenient for production and manufacturing. Of course, the present invention is not limited to this, and other suitable unlocking modules are also possible. For example, the unlocking member 130 is set to include a buckle arm that can rotate and swing, and a bayonet space for the buckle arm to buckle is formed on the locking member 120. When the buckle arm rotates and swings to buckle in the bayonet space, the connection between the reversing handle seat 140 and the swing driving rod 110 is realized. When the buckle arm rotates and swings to leave the bayonet space, the connection between the reversing handle seat 140 and the swing driving rod 110 is released.

[0064] In one embodiment of the present invention, the locking member 120 includes two one-way hinges 121, which are arranged in sequence along the swing direction of the swing drive rod 110 so that the gap between the two one-way hinges 121 forms a locking space, and the two one-way hinges 121 are configured to rotate inward. That is, when the telescopic lock core of the second control lock extends into the lock opening space, since the two one-way hinges 121 cannot rotate toward the outside, the telescopic lock core of the second control lock cannot run out from the inside, which can ensure the stability of the connection between the telescopic lock core of the second control lock and the locking member 120. At the same time, if the telescopic lock core of the second control lock extends outward from the one-way hinge 121 under unexpected circumstances, the one-way hinge 121 can also be pushed into the inside by the telescopic lock core of the second control lock, and the one-way hinge 121 can be reset under the action of its own hinge spring when the abutment of the telescopic lock core is lost, so as to realize the locking connection between the locking member 120 and the second control lock again. Such a design can avoid the phenomenon that the reversing handle seat 140 and the yaw drive rod 110 are not aligned and the transmission cannot be performed. It should be particularly noted that the inner side of the two one-way hinges 121 refers to the side where the two one-way hinges 121 are close to each other, and the outer side of the two one-way hinges 121 refers to the side where the two one-way hinges 121 are away from each other.

[0065] In one embodiment of the present invention, the yaw drive rod 110 and the two first control locks 230 are arranged on opposite sides of the fixed seat 210, and the fixed seat 210 is provided with a first guide opening 211 and a second guide opening 212 which are arranged in parallel and are both in the shape of straight strips and are spaced apart in sequence along the length direction of the yaw drive rod 110. The first movable block 220 is connected to the yaw drive rod 110 by a first connecting component 213 passing through the first guide opening 211, and one of the locking member 120 and the unlocking member 130 is connected to the yaw drive rod 110 by a second connecting component 214 passing through the second guide opening 212. The handle assembly 100 also includes a guide rail 150, which is arranged parallel to the first guide opening 211 and can be movably arranged for the reversing handle seat 140. That is, by setting the first guide opening 211 and the second guide opening 212, the translational movement of the first movable block 220 and one of the locking member 120 and the unlocking member 130 can be realized. At the same time, the reversing handle seat 140 is movably arranged on the guide rail 150 arranged parallel to the first guide opening 211, so that the swaying movement of the swaying driving rod 110 can be converted into the translational movement of the reversing handle seat 140, thereby facilitating the locking operation of the unlocking module, and the subsequent design and manufacture of the housing 300 will be simpler. Of course, the present invention is not limited to this, and the reversing handle seat 140 can also be set to be swayable and movable.

[0066] In one embodiment of the present invention, the handle assembly 100 further includes a second movable block 160 and a mounting plate 170. The second movable block 160 is disposed on the same side as the two first control locks 230 and is connected to the yaw drive rod 110 through the second connecting assembly 214. The mounting plate 170 is disposed on the second movable block 160 and can be installed on one of the locking member 120 and the unlocking member 130. By adding the second movable block 160, since the second movable block 160 can be fitted with the fixing seat 210 for translation, the stability of the translation movement is ensured. The addition of the mounting plate 170 can facilitate the installation of one of the locking member 120 and the unlocking member 130, and achieve the purpose of reducing weight and manufacturing costs. Specifically, the thickness dimension of the first movable block 220 is greater than the opening width dimension of the first guide opening 211, and the thickness dimension of the second movable block 160 is greater than the opening width dimension of the second guide opening 212, so that it will not detach from the fixed seat 210. The mounting plate 170 includes a first plate portion and a second plate portion. The first plate portion is arranged on the side of the second movable block 160 facing the first control lock 230, and the second plate portion is bent downward and extended from one end of the first plate portion away from the fixed seat 210. The locking member 120 is arranged on the side of the second plate portion away from the fixed seat 210.

[0067] Please see again Figure 1 and Figure 2In one embodiment of the present invention, the first connecting assembly 213 and / or the second connecting assembly 214 both include a mounting collar 215 and a connecting rod 216. The mounting collar 215 is sleeved on the yaw drive rod 110 and there is a gap between the mounting collar 215 and the yaw drive rod 110. The connecting rod 216 passes through the corresponding guide opening to connect the mounting collar 215 and the corresponding movable block. By setting the mounting collar 215, the second connecting assembly 214 can smoothly convert the translational drive of the reversing handle seat 140 into the yaw motion of the yaw drive rod 110, and the first connecting assembly 213 can smoothly convert the yaw motion of the yaw drive rod 110 into the translational motion of the first movable block 220. Specifically, the mounting collar 215 includes two splicing kits, which are disposed on opposite sides of the yaw drive rod 110 and the ends disposed in the same direction are detachably connected.

[0068] In one embodiment of the present invention, the reversing handle seat 140 includes a moving seat 141 and a handle body 142 connected to the moving seat 141. The moving seat 141 is movably arranged at one end away from the handle body 142, and an installation space 143 for installing the unlocking member 130 is formed on the moving seat 141. The addition of the moving seat 141 enables the reversing handle seat 140 to be movably arranged and facilitates the installation of the unlocking member 130. Specifically, the moving seat 141 can be constructed by a bottom plate, a top plate and a side plate. The outer side of the bottom plate is provided with a slider portion that is slidably connected to the guide rail 150. The outer side of the top plate is connected to the handle body 142. The unlocking member 130 is arranged in the installation space 143 between the bottom plate and the top plate, and the telescopic lock core of the unlocking member 130 can be extended from the installation space 143.

[0069] See also Figures 1 to 4 In one embodiment of the present invention, the handle reversing device further comprises a housing 300, the housing 300 encloses an inner cavity for accommodating the handle assembly 100 and the locking assembly 200, and the housing 300 has a first outwardly extending opening 301 and a second outwardly extending opening 302 respectively correspondingly formed on opposite sides thereof, the first outwardly extending opening 301 allowing the yaw drive rod 110 to extend out to drive and connect with the reversing valve of the lifting hydraulic cylinder, and the second outwardly extending opening 302 allowing the reversing handle seat 140 to extend out for manual operation. By adding the housing 300, the handle assembly 100 and the locking assembly 200 can be protected, and the installation workers are restricted to operate only the reversing handle seat 140. Specifically, the fixing seat 210 and the guide rail 150 are arranged on the inner wall of the housing 300 at intervals.

[0070] In one embodiment of the present invention, the safety lifting control system further includes an alarm 400, and the control device is also connected to the alarm 400 and configured as follows:

[0071] The control alarm 400 issues an alarm prompt for limiting the swing direction of the handle assembly 100 .

[0072] Specifically, the alarm 400 is added to remind the installation worker of the current limited yaw direction of the handle assembly 100. Specifically, the control device includes a main control circuit board 500, and the alarm 400 and the main control circuit board 500 can be arranged in the inner cavity of the housing 300. The main control circuit board 500 can be connected to the first control lock 230 and the unlocking member 130 for communication. The main control circuit board 500 can receive the monitoring result of the monitoring device. The main control circuit board 500 determines the yaw direction of the handle assembly 100 required to be limited according to the monitoring result and controls the first control lock 230, the unlocking member 130 and the alarm 400 respectively according to the yaw direction of the handle assembly 100 required to be limited. The alarm 400 can include but is not limited to a voice announcer.

[0073] Understandably, if the installation workers do not follow the installation steps properly and do not comply with the process, the safety lifting system can give the following three instructions based on the monitoring results of the monitoring device:

[0074] 1. Cylinder loading is prohibited: It is prohibited to transfer the weight of the tower crane to the lifting hydraulic cylinder, for example, when the lifting beam has not been hung or the upper part has not been matched, in this case, the telescopic lock core of the first control lock 230 that can limit the yaw direction of the handle assembly 100 to drive the lifting hydraulic cylinder to extend is controlled to extend.

[0075] 2. Cylinder unloading is prohibited: It is prohibited to transfer the weight of the lifting hydraulic cylinder to the tower crane, for example, the support rod has not been stepped on firmly, the standard section pin shaft has not been installed, etc. In this case, the telescopic lock core of the first control lock 230 that can limit the swing direction of the handle assembly 100 to drive the lifting hydraulic cylinder to retract is extended.

[0076] 3. Completely prohibit the operation of the cylinder: When an emergency occurs and it is necessary to prohibit both cylinder loading and cylinder unloading, the telescopic lock core of the second control lock is controlled to retract and exit the lock space of the locking member 120, and the connection between the reversing handle seat 140 and the yaw drive rod 110 in the handle assembly 100 is disconnected. The yaw drive rod 110 can follow the valve core of the reversing valve to return to the middle position under the action of the original spring of the reversing valve, thereby completely locking the operation of the handle assembly 100.

[0077] In the description of the present invention, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0078] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0080] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A safe lifting control system, characterized in that: The safety lifting control system comprises: Monitoring device, used to monitor the installation and removal work of the jacking operation; A handle reversing device comprises a handle assembly (100) and a locking assembly (200), wherein the handle assembly (100) can be driven and connected to a reversing valve of a lifting hydraulic cylinder, and the locking assembly (200) is used to limit the swing direction of the handle assembly (100); A control device is communicatively connected to the monitoring device and the locking assembly (200) respectively and is configured to: The locking assembly (200) is controlled to limit at least one swing direction of the handle assembly (100) according to the monitoring result of the monitoring device.

2. The safety lifting control system according to claim 1, characterized in that: The locking assembly (200) comprises a fixed seat (210), a first movable block (220) and two first control locks (230); the fixed seat (210) is fixedly arranged near the handle assembly (100); the two first control locks (230) are arranged on the fixed seat (210) in sequence along the swing direction of the handle assembly (100); the telescopic lock cores of the two first control locks (230) can be telescopically arranged in parallel toward the same end, and can enclose a locking space when the telescopic lock cores are both extended; the first movable block (220) is connected to the handle assembly (100) and is placed in the locking space, so that when the telescopic lock core of at least one of the first control locks (230) is extended, at least one swing direction of the handle assembly (100) can be restricted; the control device is respectively connected to the two first control locks (230) for communication and is further configured as follows: When it is determined according to the monitoring result of the monitoring device that the oil cylinder load needs to be prohibited, controlling the extension of the telescopic lock core of the first control lock (230) that can limit the swing direction of the handle assembly (100) used to drive the lifting hydraulic cylinder to extend; When it is determined according to the monitoring result of the monitoring device that it is necessary to prohibit the unloading of the oil cylinder, the telescopic lock core of the first control lock (230) that can limit the swing direction of the handle assembly (100) used to drive the lifting hydraulic cylinder to retract is extended.

3. The safety lifting control system according to claim 2, characterized in that: The handle assembly (100) comprises a sway drive rod (110), an unlocking module and a reversing handle seat (140); the sway drive rod (110) is drivingly connected to the reversing valve of the lifting hydraulic cylinder; the unlocking module comprises a locking member (120) and an unlocking member (130) that can be locked or unlocked with the locking member (120); the sway drive rod (110) is provided with the first movable block (220) and One of the locking member (120) and the unlocking member (130), and the other of the locking member (120) and the unlocking member (130) is arranged on the reversing handle seat (140), and the reversing handle seat (140) is movably arranged and used to drive the deflection drive rod (110) to deflect when the unlocking member (130) is locked to the locking member (120), and the control device is also communicatively connected with the unlocking member (130) and is configured as follows: When it is determined that the cylinder loading and the cylinder unloading need to be prohibited simultaneously, the unlocking member (130) is controlled to be unlocked to the locking member (120).

4. The safety lifting control system according to claim 3, characterized in that: The unlocking member (130) comprises a second control lock, the telescopic lock core of the second control lock can be extended into or retracted out of the lock opening space formed by the locking member (120), and the control device is communicatively connected with the second control lock and is further configured as follows: When it is determined that both cylinder loading and cylinder unloading need to be prohibited, the telescopic lock core of the second control lock is controlled to retract and exit the lock opening space of the locking member (120).

5. The safety lifting control system according to claim 4, characterized in that: The locking member (120) comprises two one-way hinges (121), and the two one-way hinges (121) are arranged in sequence along the sway direction of the sway driving rod (110), so that the gap between the two one-way hinges (121) forms the locking space, and the two one-way hinges (121) are arranged to be rotatable inwardly.

6. The safety lifting control system according to claim 3, characterized in that: The yaw drive rod (110) and the two first control locks (230) are arranged on opposite sides of the fixed seat (210); the fixed seat (210) is provided with a first guide opening (211) and a second guide opening (212) which are arranged in parallel and are both in the shape of straight strips in sequence and at intervals along the length direction of the yaw drive rod (110); the first movable block (220) is connected to the yaw drive rod (110) via a first connecting component (213) passing through the first guiding opening (211); one of the locking member (120) and the unlocking member (130) is connected to the yaw drive rod (110) via a second connecting component (214) passing through the second guiding opening (212); the handle assembly (100) further comprises a guide rail (150); the guide rail (150) and the first guide opening (211) are arranged parallel to each other and can be movably arranged by the reversing handle seat (140).

7. The safety lifting control system according to claim 6, characterized in that: The handle assembly (100) further comprises a second movable block (160) and a mounting plate (170); the second movable block (160) is arranged on the same side as the two first control locks (230), and is connected to the yaw drive rod (110) via the second connecting assembly (214); the mounting plate (170) is arranged on the second movable block (160) and can be used to install one of the locking member (120) and the unlocking member (130).

8. The safety lifting control system according to claim 7, characterized in that: The first connecting component (213) and / or the second connecting component (214) both comprise a mounting collar (215) and a connecting rod (216); the mounting collar (215) is sleeved on the yaw drive rod (110) and there is a gap between the mounting collar (215) and the yaw drive rod (110); the connecting rod (216) passes through a corresponding guide opening to connect the mounting collar (215) and a corresponding movable block.

9. The safety lifting control system according to claim 3, characterized in that: The handle reversing device also includes a shell (300), the shell (300) encloses an inner cavity for accommodating the handle assembly (100) and the locking assembly (200), and the shell (300) is provided with a first extending opening (301) and a second extending opening (302) on opposite sides thereof, respectively corresponding to each other, the first extending opening (301) allowing the yaw drive rod (110) to extend so as to be connected to the reversing valve drive of the lifting hydraulic cylinder, and the second extending opening (302) allowing the reversing handle seat (140) to extend so as to be manually operated.

10. The safety lifting control system according to any one of claims 1 to 9, characterized in that: The safety lifting control system further comprises an alarm (400), and the control device is also communicatively connected to the alarm (400) and is configured as follows: The alarm device (400) is controlled to issue an alarm prompt for limiting the swing direction of the handle assembly (100).

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