A crane windproof securing method and securing device

Abstract

The present invention provides a method for windproof fastening of a crane, which is applied to a fastening device, wherein the fastening device is fixedly connected to the crane, and the crane includes a plurality of trolleys, each trolley is fixedly connected to at least one fastening device, and the fastening device includes: a fastening rod, one end of which is fixedly connected to the crane, and the other end is a connecting portion; an embedded part, which is arranged in an embedded pit of a dock and is used to be loosely or tightly connected to the connecting portion; a controller, which is electrically connected to the fastening rod; the method includes: the controller controls the fastening rod and the embedded part to maintain a loose state according to the wheel pressure of the trolley, so that the deadweight of the crane can offset part or all of the upward pulling force caused by the wind load in storm conditions. The present application allows the trolley to be appropriately lifted in storm conditions by loosely connecting the fastening rod and the embedded part, so that the deadweight of the lower part of the crane participates in offsetting the upward pulling force, and at the same time avoids the increase of the internal force on the fastening, effectively reduces the load on the fastening rod, and improves the safety performance.

Description

Technical Field

[0001] The present invention relates to the field of parking equipment, and in particular to a windproof securing method and a securing device for a crane. Background Art

[0002] A quay crane, also known as a shore container crane, is a device used to load and unload containers on container ships at the shore. The windproof mooring device is an important safety device of the shore container crane (hereinafter referred to as the quay crane). Its function is to limit the lifting of the wheels and prevent overturning during storms. With the large-scale development of international container ships, the parameters of the quay crane are getting larger and larger, and the wind load of the equipment is getting higher and higher. Therefore, the requirements for the mooring load capacity of the terminal are also getting higher and higher. Traditional mooring equipment needs to be tightened in storm conditions, resulting in an increase in wheel pressure and mooring load at the same time. At this time, the mooring and wheel pressure are a pair of internal forces, which react to each other and increase each other, reducing the safety of the mooring equipment during use and posing a safety hazard. Summary of the Invention

[0003] In view of this, the present invention provides a crane windproof securing method and securing device to solve the problems of excessive wheel pressure and load in traditional securing methods.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0005] A method for securing a crane against wind according to an embodiment of the present invention is applied to a securing device, wherein the securing device is fixedly connected to the crane. The crane includes multiple trolleys, each trolley is fixedly connected to at least one securing device, and the securing device includes:

[0006] A tie rod, one end of which is fixedly connected to the crane and the other end is a connecting part;

[0007] Embedded parts are placed in the embedded pit of the wharf and are used to loosen or tighten the connection with the connecting part;

[0008] a controller electrically connected to the tie rod;

[0009] Methods include:

[0010] The controller controls the lashing rods and embedded parts to remain relaxed according to the wheel pressure of the trolley, so as to prevent additional wheel pressure and lashing force caused by internal forces during storm conditions, and to allow the crane's own weight to offset part of the upward pull force of the trolley under wind load.

[0011] In one embodiment of the present invention, the connecting portion of the tie rod is formed as a telescopic screw, an elongated ear plate is mounted on the end of the telescopic screw, and a connecting hole is formed on the ear plate;

[0012] The securing device also includes:

[0013] A connecting plate, one end of which is fixedly connected to the embedded part and the other end of which is provided with a waist-shaped through hole;

[0014] The pin assembly includes a pin, which is used to pass through the waist-shaped through hole and the connecting hole so that the embedded part and the fastening rod can be loosened or tightened, wherein the length direction of the waist-shaped through hole is perpendicular to the horizontal ground and the length is greater than the diameter of the pin.

[0015] In one embodiment of the present invention, the controller controls the tie rods and embedded parts to maintain a relaxed state according to the wheel pressure of the vehicle, including:

[0016] The controller controls the telescopic screw to extend and move toward the embedded part so that the connecting hole is aligned with the waist-shaped through hole;

[0017] The controller controls the pin shaft to extend into the waist-shaped through hole and the connecting hole;

[0018] The controller controls the telescopic screw of the fastening rod to extend downward, so that the pin shaft moves relatively downward in the waist-shaped through hole to a lower limit position against the waist-shaped through hole, so that the fastening rod and the embedded part remain in a relaxed state.

[0019] In one embodiment of the present invention, the wheel pressure is a design value, including the wheel pressure of the truck's own weight and the wheel pressure under wind conditions. The wheel pressure under wind conditions is used to represent the wheel pressure of the truck under storm conditions.

[0020] The controller controls the tie rods and embedded parts to maintain a relaxed state according to the wheel pressure of the trolley, including:

[0021] The controller calculates the deadweight wheel pressure, deadweight deflection and structural stiffness;

[0022] The controller calculates the slack based on the wheel pressure due to deadweight, wheel pressure due to wind conditions, deadweight deflection, structural stiffness and trolley leverage ratio.

[0023] In one embodiment of the present invention, the controller calculates the slack based on the wheel pressure under deadweight, wheel pressure under wind conditions, deadweight deflection, structural stiffness, and trolley leverage ratio, including:

[0024] The controller adjusts the extension distance of the lugs according to the amount of slack to adjust the load on the tie bars.

[0025] In one embodiment of the present invention, the lashing device is provided with a plurality of lashing rods, each trolley corresponds to at least one lashing rod, and the plurality of lashing rods are arranged in two rows, and the two rows of lashing rods are symmetrically arranged on the sea side and the land side of the crane respectively.

[0026] The present invention further provides a fastening device, characterized in that the fastening device is used to be fixedly connected to a crane, the crane includes multiple groups of trolleys, each group of trolleys is fixedly connected to at least one fastening device, and the fastening device includes:

[0027] A lashing rod, one end of which is fixedly connected to the crane and the other end of which is a connecting portion. There are multiple lashing rods, each corresponding to each group of trolleys, and the multiple lashing rods are arranged in two rows, and the two rows of lashing rods are symmetrically arranged on the sea side and the land side of the crane respectively;

[0028] Embedded parts are placed in the embedded pit of the wharf and are used to loosen or tighten the connection with the connecting part;

[0029] The controller is electrically connected to the tie rod and is used to control the tie rod and the embedded parts to maintain a relaxed state according to the wheel pressure of the trolley, so that the dead weight of the crane can offset part of the upward pulling force of the trolley under the wind load during storm conditions.

[0030] In one embodiment of the present invention, the connecting portion of the fastening rod is formed as a telescopic screw, an elongated ear plate is mounted on the end of the telescopic screw, and a connecting hole is formed on the ear plate;

[0031] The securing device also includes:

[0032] A connecting plate, one end of which is fixedly connected to the embedded part and the other end of which is provided with a waist-shaped through hole;

[0033] The pin assembly includes a pin, which is used to pass through the waist-shaped through hole and the connecting hole so that the embedded part and the fastening rod can be loosened or tightened, wherein the length direction of the waist-shaped through hole is perpendicular to the horizontal ground and the length is greater than the diameter of the pin.

[0034] In one embodiment of the present invention, the controller is configured to:

[0035] Control the telescopic screw to extend and move toward the embedded part so that the connecting hole is aligned with the waist-shaped through hole;

[0036] The control pin shaft extends into the waist-shaped through hole and the connecting hole;

[0037] The telescopic screw rod of the control fastening rod extends downward, so that the pin shaft moves relatively downward in the waist-shaped through hole to the lower limit position against the waist-shaped through hole, so that the fastening rod and the embedded part remain in a relaxed state.

[0038] In one embodiment of the present invention, the wheel pressure includes the wheel pressure of the truck's own weight and the wheel pressure under wind conditions. The wheel pressure under wind conditions is used to represent the wheel pressure of the truck under storm conditions. The controller is further configured to:

[0039] Calculate deadweight wheel pressure, deadweight deflection and structural stiffness;

[0040] The slack is calculated based on the wheel pressure under deadweight, wheel pressure under wind conditions, deadweight deflection, structural stiffness and trolley leverage ratio; the extension distance of the lug is adjusted based on the slack to adjust the load on the lashing rod.

[0041] The above technical solution of the present invention has at least one of the following beneficial effects:

[0042] 1. The crane windproof securing method of the present invention maintains a loose connection between the securing rod and the embedded parts, allowing the large wheel pressure to counteract the upward pull force, thereby reducing the load on the securing rod and the load on the dock. This provides technical support for increasing the parameters of dock equipment and improves safety performance.

[0043] 2. The crane windproof securing method of the present invention adjusts the extension distance of the securing rods connected to each trolley by calculating the slack, so that the maximum securing load on the sea and road sides is equal in different wind directions, further improving safety performance.

[0044] 3. The crane windproof securing method of the present invention uses a telescopic screw to adjust the slack, which can conveniently adjust the extension length, thereby quickly deploying the adjustment rod, reducing the reaction time under storm conditions and further improving safety performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 This is a schematic structural diagram of the fastening device in an assembled state according to an embodiment of the present invention;

[0046] Figure 2 is a schematic structural diagram of a fastening device according to an embodiment of the present invention;

[0047] Figure 3 is another structural schematic diagram of a fastening device according to an embodiment of the present invention;

[0048] Figure 4 A schematic structural diagram of the connection between the ear plate and the embedded part of the fastening device according to an embodiment of the present invention;

[0049] Figure 5 is a schematic structural diagram of another assembled state of the fastening device according to an embodiment of the present invention;

[0050] Figure 6 A schematic diagram of wind direction under storm conditions for a fastening device according to an embodiment of the present invention;

[0051] Figure 7 Schematic diagram of the crane trolley state in the crane windproof securing method according to an embodiment of the present invention;

[0052] Figure 8 This is a schematic diagram of another state of the crane trolley in the crane windproof securing method according to an embodiment of the present invention.

[0053] Figure numerals: 100, trolley; 101, crossbeam; 210, fastening rod; 211, turnbuckle; 212, telescopic screw; 213, ear plate; 214, waist-shaped through hole; 220, embedded part; 221, embedded pit; 222, connecting plate; 230, pin shaft; 310, sea side track; 320; land side track. DETAILED DESCRIPTION

[0054] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0055] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons of ordinary skill in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "a" do not indicate a quantity limitation, but rather indicate the existence of at least one. Words such as "connected" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship also changes accordingly.

[0056] Traditional securing methods use securing equipment to secure and tighten the crane to the structure within the pre-buried pit during storm conditions. In this situation, the securing rods preferentially bear the upward pull, while the crossbeams of the crane's lower structure are unable to participate. Simultaneously, the large wheel pressure exerts a downward positive force. The securing force and wheel pressure act as a pair of internal forces, reacting against each other and causing both the wheel pressure and securing load to increase simultaneously. This reduces the safety of the securing equipment during use, poses a safety hazard, and hinders the upgrade of terminal equipment. To address these issues, the present invention provides a crane windproof securing method and securing device.

[0057] First, a crane windproof securing method and securing device according to the present invention will be described in detail below with reference to the accompanying drawings.

[0058] A crane windproof securing method according to an embodiment of the present invention is applied to a securing device, such as Figure 1 、 Figure 2 and Figure 8As shown, the lashing device is fixedly connected to the crane. The crane includes multiple trolleys 100, each trolley 100 being fixedly connected to at least one lashing device. The lashing device includes a lashing rod 210, an embedded part 220, and a controller. The lashing rod 210 is fixedly connected to the crane at one end and forms a connecting portion at the other end. The embedded part 220 is placed in a pre-buried pit 221 at the dock and is configured to be loosened or tightened with the connecting portion. The controller is electrically connected to the lashing rod 210. The crane windproof lashing method includes: the controller controls the lashing rod 210 and the embedded part 220 to maintain a relaxed state based on the wheel pressure of the trolley. This prevents the generation of additional wheel pressure and lashing force due to internal forces during storm conditions, and allows the crane's deadweight to partially offset the upward pull of the trolley 100 from wind loads.

[0059] Specifically, four trolleys 100 are installed beneath the crane, symmetrically positioned on the crane's seaside track 310 and landside track 320. Tie-down devices are located outside the trolleys 100 and fixedly connected to the crane's crossbeam 101. When encountering storm conditions, dock personnel can manually or through a controller to lower the tie-down rods 210. In a preferred embodiment of the present invention, the controller can be used to control the lowering of the tie-down rods 210 so that they enter embedded components 220 located in pre-buried pits 221 on the dock floor. The connection between the ends of the tie-down rods 210 and the embedded components 220 is then loosely connected based on wheel pressure data. When exposed to wind, the crane is subjected to an upward pull perpendicular to the wind direction. Due to the loose connection between the tie-down rods 210 and the embedded components 220, the wheel pressure of the trolleys 100 perpendicular to the wind direction can drop to zero, or the wheels can lift until the trolleys 100 leave the track surface. As a result, the deadweight of the crane is used to offset the upward pulling force, thus avoiding the generation of additional fastening force and also avoiding the additional internal force generated by the fastening tightening, thereby effectively reducing the fastening load on the fastening rod 210 and improving safety performance.

[0060] like Figure 2 、 Figure 3 and Figure 4 As shown, in one embodiment of the present invention, the connecting portion is formed as a telescopic screw 212, with an elongated ear plate 213 mounted at the end of the telescopic screw 212. The ear plate 213 is formed with a connection hole (not shown). Multiple lashing rods 210 are symmetrically arranged on the sea and land sides of the crane. The lashing device also includes a connecting plate 222 and a pin assembly. One end of the connecting plate 222 is fixedly connected to the embedded part 220, and the other end is provided with a waist-shaped through-hole 214. The pin assembly includes a pin 230. The pin 230 is configured to be inserted through the waist-shaped through-hole 214 and the connection hole via a retractable pin 230 to connect to the embedded part 220 and the lashing rod 210. The length of the waist-shaped through-hole 214 is perpendicular to the horizontal ground and is longer than the diameter of the pin 230.

[0061] Specifically, the controller can control the telescopic screw 212 to descend, causing the lug 213 at the end of the telescopic screw 212 to enter the embedded component 220 disposed in the embedded pit 221, aligning the waist-shaped through-hole 214 with the connecting hole. At this point, the retractable pin 230 in the pin assembly can enter the waist-shaped through-hole 214 and the connecting hole, where the length of the waist-shaped through-hole 214 is greater than the diameter of the pin 230. Thus, after the pin 230 enters the waist-shaped through-hole 214 and the connecting hole, the controller can control the telescopic screw 212 to further extend, causing the pin 230 to abut against the lower limit of the waist-shaped through-hole 214, thereby loosening the connection between the tie rod 210 and the embedded component 220. During windstorm conditions, when the crane is subjected to an upward pull force perpendicular to the wind direction, the crane's own weight preferentially counteracts the upward pull, effectively reducing the tie-down load on the tie rod 210 and avoiding the additional internal forces generated by tightening the tie, thereby significantly improving safety.

[0062] like Figure 4 and Figure 5 As shown, in one embodiment of the present invention, during storm conditions, the controller controls the tie rod 210 and the embedded part 220 to remain in a relaxed state, including: the controller controls the telescopic screw 212 to extend and move toward the embedded part 220, so that the waist-shaped through hole 214 is aligned with the connecting hole; the controller controls the pin shaft to extend into the waist-shaped through hole and the connecting hole; the controller controls the telescopic screw of the tie rod to extend downward, so that the pin shaft moves relatively downward in the waist-shaped through hole to the lower limit position of the waist-shaped through hole, so that the tie rod and the embedded part remain in a relaxed state.

[0063] Specifically, if Figure 6As shown, under different storm conditions, one side of the crane will be subjected to lateral wind loads W1, W2, W3, W4, and W5 on the seaside track 310 and the landside track 320, respectively. The controller controls the extension of the telescopic screw 212 and its movement toward the embedded component 220, causing the lug 213 to extend into the embedded pit 221 below the ground level and align with the embedded component 220. After the pin 230 is inserted into the connecting hole and aligned with the waist-shaped through-hole 214, the tie rod 210 and the embedded component 220 need to be loosely connected. At this point, the extension distance of the telescopic screw 212 needs to be adjusted to ensure that the pin 230 does not contact the upper and lower limit positions of the waist-shaped through-hole 214. More specifically, since the telescopic screw 212 is not equipped with a scale, the extension distance of the telescopic screw 212 must be calculated based on the number of rotations of the turnbuckle 211 on the telescopic screw 212. Therefore, the controller needs to control the rotation of the turnbuckle 211 on the fastening rod 210 so that the telescopic screw 212 extends downward so that the pin 230 abuts the lower limit position of the waist-shaped through hole 214, that is, the zero point position of the extension distance of the telescopic screw 212. At this time, the fastening device is loosely connected to the embedded part 220. When the load of the fastening device on a specified side needs to be adjusted, the controller can control the rotation of the turnbuckle 211 to retract the telescopic screw 212 upward, and control the extension distance of the telescopic screw 212 according to the number of rotations of the turnbuckle 211. Thus, by rotating the turnbuckle 211 on the fastening rod 210 so that the telescopic screw 212 extends so that the pin 230 abuts the lower limit position of the waist-shaped through hole 214, the fastening rod 210 and the embedded part 220 can be loosely connected, and the extension distance of the telescopic screw 212 can be conveniently adjusted when the load of each fastening device needs to be adjusted.

[0064] In one embodiment of the present invention, the wheel pressure is a design value, including the deadweight wheel pressure of the trolley 100 and the wind wheel pressure. The wind wheel pressure represents the wheel pressure of the trolley 100 during storm conditions. During storm conditions, the controller controls the tie rods 210 and embedded components 220 to maintain a relaxed state. This includes calculating the deadweight wheel pressure, deadweight deflection, and structural stiffness. The controller calculates the relaxation amount based on the deadweight wheel pressure, wind wheel pressure, deadweight deflection, structural stiffness, and the leverage ratio of the trolley 100.

[0065] Specifically, in order to maintain the force balance of the crane, the maximum lashing load of the four trolleys on the sea and land sides needs to be less than the allowable value under different wind directions. Therefore, it is necessary to adjust the loads on the lashing devices on the sea and land sides respectively to keep the loads on the sea and land sides within a certain range. Therefore, it is necessary to adjust the extension length of the lashing rod 210 according to the slack. The following is an example of trolley B on the sea side and trolley C on the land side. Figure 5 、 Figure 6 and Figure 7As shown in (a), when not fastened, the wheel pressures of trolley B and trolley C are B0 and C0 respectively. Since the center of gravity of the crane is located at 320 on the land side track, B0 is greater than C0. Finite Element Analysis (FEA) calculates that when the wheel pressures are B0 and C0, the wheel pressures of trolley B and trolley C are ΔB and ΔC respectively. At the same time, in the storm working condition in the direction of W5, the wheel pressures of trolley B and trolley C under wind conditions are B1 (because the center of gravity of the crane is biased toward the land side, B1 is the maximum negative wheel pressure value at W5) and C1 respectively; in the storm working condition in the direction of W4 (at this time, C2 has the maximum negative value at W4), the maximum negative wheel pressures of trolley B and trolley C under wind conditions are B1 and C2 respectively; and B1 is numerically greater than B2. As shown in Figure 8 As shown, taking trolley B as an example, in storm conditions, trolley B is subjected to a vertical load F. For the entire machine structure, when the trolley position is constrained at A, C, and D and the vertical load F acts on the track surface at trolley B, a vertical deformation ΔL is generated, and the structural stiffness k = F / ΔL (unit: t / mm). In addition, Figure 5 As shown, the distance between the centers of the two trolleys 100 is L1, and the distance between the center of the trolley 100 and the fastening device of the adjacent trolley 100 is L2, that is, the trolley leverage ratio n is L1 / L2. Figure 7 As shown in (b), the slack SB of the fastening device at trolley B on the sea-side track 310 is C1 / (k*n)+ΔB*(B0-B1) / B0, and the fastening load FB on the fastening device at trolley B is (B1+C1)*n. The slack SC of the fastening device at trolley C on the land-side track 320 is ΔC, and the fastening load FC on the fastening device at trolley C is [C2-k*(SB-SC)]*n. Therefore, the slack can be calculated according to the design value of the wheel pressure of the trolley in different wind directions, and the extension length of the fastening rod 210 loosely connected to the embedded part 220 can be adjusted according to the slack, so that the maximum fastening load of the four groups of trolleys on the sea and land sides is less than the allowable value. In this way, the force safety of the crane is effectively ensured.

[0066] In one embodiment of the present invention, the controller calculates the slack based on the deadweight wheel pressure, wind wheel pressure, deadweight deflection, structural stiffness and trolley leverage ratio, including: the controller adjusts the extension distance of the ear plate 213 based on the slack to make additional adjustments to the load on the tie rod 210.

[0067] Specifically, if Figure 2 、 Figure 7 (b) and Figure 7As shown in (c), taking trolleys B and C as examples, when it is necessary to reduce the fastening load of the fastening device at trolley B, the extension distance of the ear plate 213 can be increased by increasing the slack X (unit: mm) through the controller. More specifically, a spiral buckle 211 is provided on the telescopic screw 212, and the ear plate 213 can be retracted to the upper limit position by rotating the spiral buckle 211, and then the ear plate 213 is controlled to extend according to the slack X. As a result, the fastening load of the fastening device at trolley B is reduced by n*X*k tons. At the same time, as the slack increases, trolley C also begins to lift its legs or increase its leg lift, that is, more wheel pressure of trolley C participates in offsetting the upward pulling force, or the fastening at C bears more upward pulling force, thereby further reducing the fastening load of the fastening device at trolley B. In this way, the fastening load on the crane is effectively adjusted.

[0068] The present invention further provides a fastening device, characterized in that the fastening device is used to be fixedly connected to a crane, the crane includes multiple groups of trolleys, each group of trolleys is fixedly connected to at least one fastening device, and the fastening device includes:

[0069] A lashing rod, one end of which is fixedly connected to the crane and the other end of which is a connecting portion. There are multiple lashing rods, each corresponding to each group of trolleys, and the multiple lashing rods are arranged in two rows, and the two rows of lashing rods are symmetrically arranged on the sea side and the land side of the crane respectively;

[0070] Embedded parts are placed in the embedded pit of the wharf and are used to loosen or tighten the connection with the connecting part;

[0071] The controller is electrically connected to the tie rod and is used to control the tie rod and the embedded parts to maintain a relaxed state according to the wheel pressure of the trolley, so that the dead weight of the crane can offset part of the upward pulling force of the trolley under the wind load during storm conditions.

[0072] In one embodiment of the present invention, the connecting portion of the fastening rod is formed as a telescopic screw, an elongated ear plate is mounted on the end of the telescopic screw, and a connecting hole is formed on the ear plate;

[0073] The securing device also includes:

[0074] A connecting plate, one end of which is fixedly connected to the embedded part and the other end of which is provided with a waist-shaped through hole;

[0075] The pin assembly includes a pin, which is used to pass through the waist-shaped through hole and the connecting hole so that the embedded part and the fastening rod can be loosened or tightened, wherein the length direction of the waist-shaped through hole is perpendicular to the horizontal ground and the length is greater than the diameter of the pin.

[0076] In one embodiment of the present invention, the controller is configured to:

[0077] Control the telescopic screw to extend and move toward the embedded part so that the connecting hole is aligned with the waist-shaped through hole;

[0078] The control pin shaft extends into the waist-shaped through hole and the connecting hole;

[0079] The telescopic screw rod of the control fastening rod extends downward, so that the pin shaft moves relatively downward in the waist-shaped through hole to the lower limit position against the waist-shaped through hole, so that the fastening rod and the embedded part remain in a relaxed state.

[0080] In one embodiment of the present invention, the wheel pressure includes the wheel pressure of the truck's own weight and the wheel pressure under wind conditions. The wheel pressure under wind conditions is used to represent the wheel pressure of the truck under storm conditions. The controller is further configured to:

[0081] Calculate deadweight wheel pressure, deadweight deflection and structural stiffness;

[0082] The slack is calculated based on the wheel pressure under deadweight, wheel pressure under wind conditions, deadweight deflection, structural stiffness and trolley leverage ratio; the extension distance of the lug is adjusted based on the slack to adjust the load on the lashing rod.

[0083] It should be noted that the various devices in the securing device of the present invention implement the crane windproof securing method in the above embodiment. The specific functions and effects thereof can be referred to the description of the above embodiment and will not be repeated here.

[0084] The crane windproof securing method of this invention adjusts the extension distance of the securing rod by calculating the slack. This allows the large wheel pressure to counteract the upward pull force, reducing the load on the securing rod and improving safety. Furthermore, using a telescopic screw to adjust the slack allows for convenient adjustment of the extension length, allowing for rapid deployment of the adjusting rod, reducing response time in storm conditions and further enhancing safety.

[0085] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A method for securing a crane against wind, characterized in that: Applied to a fastening device, the fastening device is fixedly connected to the crane, the crane comprises a plurality of trolleys, each trolley is fixedly connected to at least one fastening device, and the fastening device comprises: A tie rod, one end of which is fixedly connected to the crane, and the other end of which is a connecting portion, wherein the connecting portion of the tie rod is formed as a telescopic screw, and an elongated ear plate is installed at the end of the telescopic screw, and a connecting hole is formed on the ear plate; An embedded part is arranged in the embedded pit of the wharf and is used for loose or tight connection with the connecting part; a controller electrically connected to the tie rod; A connecting plate, one end of which is fixedly connected to the embedded part and the other end of which is provided with a waist-shaped through hole; A pin assembly, comprising a pin, the pin being used to be inserted into the waist-shaped through hole and the connecting hole so that the embedded part and the fastening rod can be loosely or tightly connected, wherein the length direction of the waist-shaped through hole is perpendicular to the horizontal ground and the length is greater than the diameter of the pin; The method comprises: The controller controls the tying rod and the embedded parts to maintain a relaxed state according to the wheel pressure of the trolley, so as to prevent the generation of additional wheel pressure and tying force due to internal force in storm conditions, and to make the deadweight of the crane offset part of the upward pulling force of the trolley under the wind load, wherein the wheel pressure is a design value, including the deadweight wheel pressure of the trolley and the wind condition wheel pressure, and the wind condition wheel pressure is used to represent the wheel pressure of the trolley in storm conditions; The controller controls the tie rod and the embedded part to maintain a relaxed state according to the wheel pressure of the vehicle, including: The controller controls the telescopic screw to extend and move toward the embedded part so that the connecting hole is aligned with the waist-shaped through hole; The controller controls the pin shaft to extend into the waist-shaped through hole and the connecting hole; The controller controls the telescopic screw of the tie rod to extend downward, so that the pin shaft moves relatively downward in the waist-shaped through hole to the lower limit position against the waist-shaped through hole. The controller calculates the self-weight wheel pressure, self-weight deflection and structural stiffness. The controller calculates the relaxation amount according to the self-weight wheel pressure, the wind wheel pressure, the self-weight deflection, the structural stiffness and the trolley lever ratio. The controller adjusts the extension distance of the ear plate according to the relaxation amount to adjust the load on the tie rod so that the tie rod and the embedded parts remain in a relaxed state.

2. The method according to claim 1, characterized in that The tying device is provided with a plurality of tying rods, each of the trolleys corresponds to at least one tying rod, and the plurality of tying rods are arranged in two rows, and the tying rods in the two rows are symmetrically arranged on the sea side and the land side of the crane respectively.

3. A fastening device, characterized in that: The fastening device is used to be fixedly connected to a crane, the crane comprises a plurality of groups of trolleys, each group of the trolleys is fixedly connected to at least one fastening device, the fastening device comprises: A tying rod, one end of which is fixedly connected to the crane and the other end of which is a connecting portion. The tying rods include a plurality of tying rods, each of which corresponds to each group of the trolleys, and the plurality of tying rods are arranged in two rows, and the two rows of tying rods are symmetrically arranged on the sea side and the land side of the crane, respectively. The connecting portion of the tying rod is formed as a telescopic screw, and an elongated ear plate is installed at the end of the telescopic screw, and a connecting hole is formed on the ear plate; An embedded part is arranged in the embedded pit of the wharf and is used for loose or tight connection with the connecting part; a controller, electrically connected to the tie rod, for controlling the tie rod and the embedded part to maintain a relaxed state according to the wheel pressure of the trolley, so that the deadweight of the crane can offset part of the upward pulling force of the trolley subjected to the wind load in storm conditions, wherein the wheel pressure includes the deadweight wheel pressure of the trolley and the wind condition wheel pressure, and the wind condition wheel pressure is used to indicate the wheel pressure of the trolley in storm conditions; A connecting plate, one end of which is fixedly connected to the embedded part and the other end of which is provided with a waist-shaped through hole; A pin assembly, comprising a pin, the pin being used to be inserted into the waist-shaped through hole and the connecting hole so that the embedded part and the fastening rod can be loosely or tightly connected, wherein the length direction of the waist-shaped through hole is perpendicular to the horizontal ground and the length is greater than the diameter of the pin; The controller is also used to control the telescopic screw to extend and move toward the embedded part so that the connecting hole is aligned with the waist-shaped through hole, and the controller is also used to control the pin to extend into the waist-shaped through hole and the connecting hole; The controller is also used to control the telescopic screw of the tie rod to extend downward, so that the pin shaft moves relatively downward in the waist-shaped through hole to a lower limit position against the waist-shaped through hole, so that the tie rod and the embedded part remain in a relaxed state; The controller is also used to calculate the self-weight wheel pressure, self-weight deflection and structural stiffness. The controller is also used to calculate the slack amount based on the self-weight wheel pressure, the wind condition wheel pressure, the self-weight deflection, the structural stiffness and the trolley leverage ratio; and adjust the extension distance of the ear plate according to the slack amount to adjust the load on the tie rod.

Images