Superlift device for hoisting equipment and hoisting equipment

Abstract

The invention belongs to the technical field of hoisting equipment, and particularly relates to a super-lifting device for hoisting equipment and the hoisting equipment, the hoisting equipment comprises a hoisting arm, the super-lifting device comprises two masts, the two masts are located at the same height, one ends of the two masts are hinged through a first connecting piece and rotationally installed on the hoisting arm, and the other ends of the two masts are connected through a second connecting piece; the other end is a free end and can swing relatively; the first end of the transverse pull rope is connected with any mast; one end of the telescopic driving mechanism is connected with the other mast, the other end of the telescopic driving mechanism is connected with the second end of the transverse pull rope, and the telescopic driving mechanism can do linear telescopic motion so as to apply releasing force or tensioning force to the transverse pull rope. By the adoption of the superlift device, the transverse pull rope can be controlled to be released or tensioned by controlling the telescopic driving mechanism, the angle of the mast is convenient to adjust, the control efficiency of the superlift device is improved, and the construction efficiency of hoisting equipment is also improved.

Description

Technical Field

[0001] The invention belongs to the technical field of lifting equipment, and in particular relates to a super lifting device used for lifting equipment and the lifting equipment. Background Art

[0002] The crane is equipped with a superlift device to improve the strength and rigidity of the crane boom and the lifting performance of the crane. When the superlift is carried out for a super-large tonnage crane of more than 1,000 tons, due to its own weight and the tension of the wire rope, the superlift structure will produce greater stress and deformation.

[0003] Most of the existing super-lifting devices of truck cranes are equipped with two masts. The ends of the masts are connected to the middle of the lifting wall, and the ends of the masts are connected to lifting wire ropes to assist the lifting arm in performing lifting operations. In the super-lifting working state, the reliability of the mast swinging is extremely high. When the swing fails, the horizontal pull rope can prevent the deformation of the mast and avoid the risk of lateral collapse of the mast. However, in the prior art, when adjusting the angle of the mast, it is necessary to stop the lifting operation and retract the mast together, and then adjust and lock the working length of the horizontal pull rope when it is tightened by manual high-altitude operations, which has low construction efficiency and cumbersome operation. Summary of the invention

[0004] The purpose of the present invention is to provide a superlifting device and a lifting equipment to solve the technical problem of difficulty in adjusting the length of the horizontal pull rope existing in the prior art.

[0005] In order to achieve the above object, the present invention provides a super-lifting device for a lifting equipment, wherein the lifting equipment includes a lifting arm, and the super-lifting device includes:

[0006] Two masts, the two masts are at the same height, one end of the two masts is hinged through a first connecting piece and can be rotatably mounted on the crane arm, and the other end is a free end and can swing relative to each other;

[0007] A horizontal guy rope, a first end of which is connected to any one of the masts;

[0008] A telescopic drive mechanism, one end of which is connected to another mast, and the other end of which is connected to the second end of the horizontal pull rope. The telescopic drive mechanism can perform linear telescopic motion to apply a release force or a tensioning force to the horizontal pull rope.

[0009] In some embodiments, the super-lifting device also includes: a detection module, which is installed on the telescopic drive mechanism and is used to detect the extension length of the telescopic drive mechanism and send an extension length signal; a control module, which is communicated with the detection module and is configured to determine whether the telescopic drive mechanism is extended or retracted to the position according to the extension length signal, and control the telescopic drive mechanism to stop moving after it is in place.

[0010] In some embodiments, the telescopic drive mechanism is a transverse pulling cylinder, which is connected to the hydraulic circuit of the lifting equipment. One of the fixed end and the telescopic end of the transverse pulling cylinder is installed on the mast, and the other is connected to the second end of the transverse pulling rope.

[0011] In some embodiments, the super-lifting device also includes a connecting rod, which is movably connected to the telescopic rod of the transverse pulling cylinder through a second connecting member, and the detection module includes: a detection member, which is arranged on the connecting rod and located outside the cylinder body of the transverse pulling cylinder; a sensing member, which cooperates with the detection member, and the number of the sensing members is multiple, and the multiple sensing members are arranged on the outer peripheral side of the transverse pulling cylinder and are arranged in parallel and spaced apart along the length direction of the transverse pulling cylinder.

[0012] In some embodiments, a hinged portion hinged to the ends of the two masts is provided on the lifting arm, and a mounting portion is provided on the opposite surface of the mast. The super-lifting device also includes: two linear driving members, which are arranged one-to-one corresponding to the two masts, one end of the linear driving member is hinged to the hinged portion, and the other end of the linear driving member is hinged to the mounting portion and is used to drive the mast to swing.

[0013] In some embodiments, the linear drive member is communicatively connected to the control module, and the control module is further configured to: obtain the target lifting weight of the lifting equipment; control the telescopic drive mechanism to apply a release force to the transverse rope to release the transverse rope; determine the target swing angle of the mast according to the target lifting weight; control the linear drive member to drive the mast to swing to the target swing angle; control the telescopic drive mechanism to apply a tensioning force to the transverse rope to lock the transverse rope.

[0014] In some embodiments, the control module is further configured to: obtain the elongated length of the horizontal pull rope after locking the horizontal pull rope; determine the current swing angle of the mast based on the elongated length; control the telescopic drive mechanism to apply a release force to release the horizontal pull rope when the absolute value of the difference between the current swing angle and the target swing angle is greater than a preset difference; and readjust the swing angle of the mast until the absolute value of the difference between the current swing angle and the target swing angle is less than or equal to the preset difference.

[0015] In some embodiments, a row of storage assemblies are provided on opposite sides of the two masts. The storage assemblies include a plurality of storage members arranged in parallel and spaced apart along the axial direction of the masts. The storage members are used to store the transverse pull ropes when the two masts are parallel.

[0016] In some embodiments, a storage channel is formed between the multiple storage members in each group of storage assemblies and the corresponding masts. When the two masts are parallel, the horizontal pull rope passes through the two storage channels in sequence and is connected to the masts.

[0017] A second aspect of the present invention provides a lifting equipment, comprising a lifting arm and the above-mentioned super-lifting device for the lifting equipment.

[0018] In the above technical solution, the super-lifting device includes two masts, a transverse pull rope and a telescopic drive mechanism. The mast of the super-lifting device is connected to the steel wire rope of the boom, which can reduce the stress deformation of the boom. One end of the mast is hinged and rotatably installed on the lifting wall through a first connecting piece, and the other end of the mast can swing relatively. The two ends of the transverse pull rope are respectively connected to the masts. When any one of the masts fails to swing, the transverse pull rope can pull the failed mast through the other mast to prevent the mast from tipping over. One end of the telescopic drive mechanism of the present application is connected to any one of the masts, and the other end of the telescopic drive mechanism is connected to the second end of the transverse pull rope. By controlling the telescopic drive mechanism to extend and retract, the extension length of the transverse pull rope can be adjusted, and a release force or a tensioning force can also be applied to the transverse pull rope. By adopting the above-mentioned super-lifting device, when the swing angle of the mast changes, the telescopic drive mechanism can be controlled to apply a release force to facilitate the swing of the mast. After the mast swing is completed, the telescopic drive mechanism can apply a tensioning force to the transverse pull rope to tighten the two masts through the transverse pull rope and the telescopic drive mechanism, thereby simplifying the steps of adjusting the mast angle and improving construction efficiency.

[0019] Other features and advantages of the embodiments 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 A schematic top view of a mast in an open position according to an embodiment of the present invention;

[0022] Figure 2 A schematic top view of a closed mast according to an embodiment of the present invention;

[0023] Figure 3 It is a partial schematic diagram of a superlift device provided according to an embodiment of the present invention in a first state;

[0024] Figure 4 It is a partial schematic diagram of the super-lifting device provided according to an embodiment of the present invention in the second state;

[0025] Figure 5 It is a partial schematic diagram of the superlift device provided according to an embodiment of the present invention in the fourth state.

[0026] Description of Reference Numerals

[0027] 10 Mast

[0028] 20 Horizontal pull rope

[0029] 30 Telescopic drive mechanism

[0030] 41 Test pieces

[0031] 42 Induction parts

[0032] 50 Connecting rod

[0033] 60 Second connecting piece

[0034] 70 Linear drive

[0035] 81 Storage

[0036] 90 hinge DETAILED DESCRIPTION

[0037] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0038] The following describes the superlifting device for lifting equipment and the lifting equipment according to the present invention with reference to the accompanying drawings. Figure 1 , which is a schematic top view of a mast 10 when it is opened according to an embodiment of the present invention; Figure 2 FIG. 1 is a schematic top view of a mast 10 provided in a closed state according to an embodiment of the present invention. The lifting equipment of the present application includes a lifting arm (not shown in the figure), and the super lifting device includes:

[0039] Two masts 10, the two masts 10 are at the same height, one end of the two masts 10 is hinged through a first connecting member (not shown in the figure) and can be rotatably mounted on the crane arm, and the other end is a free end and can swing relative to each other;

[0040] A horizontal pull rope 20, a first end of which is connected to any one of the masts 10;

[0041] The telescopic drive mechanism 30 has one end connected to another mast 10 and the other end connected to the second end of the horizontal pull rope 20. The telescopic drive mechanism 30 can perform linear telescopic motion to apply a release force or a tensioning force to the horizontal pull rope 20.

[0042] The super lifting device of the present invention includes two masts 10, a horizontal pull rope 20 and a telescopic drive mechanism 30. The mast 10 on the boom can be connected to the steel wire rope of the boom to reduce the stress deformation of the boom when lifting heavy objects. One end of the mast 10 can be rotatably installed on the boom through a first connecting piece, and the other end of the mast 10 is a free end and can swing relative to each other, wherein the first connecting piece can be optionally a pin. Different lifting weights require different swing angles of the mast 10. The greater the lifting weight, the greater the angle between the two masts 10. The two ends of the horizontal pull rope 20 are respectively connected to the two masts 10, and the horizontal pull rope 20 can prevent the risk of collapse caused by the failure of the mast 10 to rotate. Optionally, the horizontal pull rope 20 is made of steel wire. However, in the prior art, the angle of the mast 10 is different under different lifting weights. When the lifting equipment is in lifting operation, the horizontal rope 20 needs to be kept in a tensioned state. Therefore, when it is necessary to adjust the angle of the mast 10, it is mostly necessary to manually adjust the working length of the horizontal rope 20 when it is tensioned. The adjustment process is cumbersome and reduces construction efficiency.

[0043] The superlift device of the present invention includes a telescopic drive mechanism 30, a first end of a horizontal pull rope 20 is connected to a mast 10, a second end of the horizontal pull rope 20 is connected to the telescopic drive mechanism 30, and the other end of the telescopic drive mechanism 30 is connected to the mast 10. The telescopic drive mechanism 30 can control the horizontal pull rope 20 to release or tighten. When the swing angle of the mast 10 needs to be adjusted, the telescopic drive mechanism 30 can be controlled to release the horizontal pull rope 20 so that the mast 10 can adjust the swing angle. When the swing angle of the mast 10 is adjusted, the telescopic drive mechanism 30 applies a tensioning force to the horizontal pull rope 20 so that the horizontal pull rope 20 is in a tensioned state to prevent the mast 10 from swinging and failing to cause a tipping accident.

[0044] By adopting the above-mentioned super-lifting device, the release or tensioning of the horizontal rope 20 can be controlled by controlling the telescopic drive mechanism 30. The angle adjustment of the mast 10 is convenient, and there is no need for manual high-altitude work to adjust the working length of the horizontal rope 20 when it is tightened, thereby improving construction efficiency.

[0045] In one embodiment, the super-lifting device further includes: a detection module (not shown in the figure), which is installed on the telescopic drive mechanism 30 and is used to detect the extension length of the telescopic drive mechanism 30 and send an extension length signal; a control module (not shown in the figure), which is connected to the detection module in communication and is configured to determine whether the telescopic drive mechanism 30 is extended or retracted in place according to the extension length signal, and control the telescopic drive mechanism 30 to stop the action after reaching the position. The super-lifting device also includes a detection module for detecting the length of the horizontal pull rope 20. The detection module is installed on the telescopic drive mechanism 30, and can detect the extension length of the telescopic drive mechanism 30 and send a length signal to the control module. The control module can determine whether the telescopic drive mechanism 30 is extended in place according to the length signal. When the telescopic drive mechanism 30 is extended in place, the control module controls the telescopic drive mechanism 30 to stop the action. The above-mentioned detection module and control module can accurately adjust the telescopic length of the telescopic drive mechanism 30, prevent the failure of the horizontal pull rope 30 to be tightened due to insufficient extension, and prevent the mast 10 from being unable to swing to the target swing angle.

[0046] In one embodiment, the telescopic drive mechanism 30 is a horizontal pull cylinder, which is connected to the hydraulic circuit of the lifting equipment. One of the fixed end and the telescopic end of the horizontal pull cylinder is installed on the mast 10, and the other is connected to the second end of the horizontal pull rope 20. The telescopic drive mechanism 30 is a horizontal pull cylinder, one end of which is connected to the second end of the horizontal pull rope 20, and the other end is connected to the mast 10. The telescopic movement of the horizontal pull cylinder can release or tighten the horizontal pull rope 20. When the horizontal pull cylinder tightens the horizontal pull rope 20, it can prevent the mast 10 from swinging and failing to cause a tipping accident; when the horizontal pull cylinder releases the horizontal pull rope 20, it can facilitate the mast 10 to swing.

[0047] In one embodiment, Figure 3 , which is a partial schematic diagram of a superlift device in a first state according to an embodiment of the present invention; Figure 4 , which is a partial schematic diagram of the superlift device provided in the second state according to an embodiment of the present invention; Figure 5, which is a partial schematic diagram of the super-lifting device provided according to an embodiment of the present invention in the fourth state, wherein the swing angles of the mast 10 in the first state, the second state and the third state are different, and the elongation lengths of the horizontal pull rope 20 are also different. The super-lifting device also includes a connecting rod 50, which is connected to the telescopic rod of the horizontal pull cylinder through a second connecting member 60, and the detection module includes: a detection member 41, which is arranged on the connecting rod 50 and located outside the cylinder body of the horizontal pull cylinder; a sensing member 42, which is inductively matched with the detection member 41, and the number of the sensing members 42 is multiple, and the multiple sensing members 42 are arranged on the outer peripheral side of the horizontal pull cylinder and are arranged in parallel and spaced along the length direction of the horizontal pull cylinder. The super-lifting device also includes a connecting rod 50, which is connected to the telescopic rod of the horizontal pull cylinder through a second connecting member 60, and when the horizontal pull cylinder telescopically reciprocates, the connecting rod 50 can reciprocate with the telescopic rod. The detection member 41 provided in the embodiment of the present invention is arranged on the connecting rod 50 and located outside the cylinder body, and can be inductively matched with the sensing member 42 on the cylinder body. There are multiple sensing elements 42, which are arranged in parallel and spaced apart along the length direction of the horizontal pull cylinder. When the horizontal pull cylinder telescopes, it can drive the detection element 41 to move linearly along the outside of the cylinder body and pass through the detection element 41. When the detection element 41 detects the sensing element 42, it can determine the extension length of the horizontal pull cylinder, and can send a length signal to the control module so that the control module can determine the swing angle of the mast 10 according to the extension length. By adopting the above-mentioned detection module, the swing angle of the mast 10 can be monitored at a relatively low cost, the structure is simple, the detection result is accurate, and it is easy to maintain.

[0048] In a specific embodiment, the detection component 41 is a proximity switch, and the sensing component 42 is a plurality of sensing strips. The sensing strips can contact and cooperate with the proximity switch when the transverse pulling cylinder moves in an extension and retraction motion. After the proximity switch contacts the sensing strips, it can send a signal to the control module. The control module can determine the swing angle of the mast 10 based on the signal sent by the proximity switch.

[0049] In one embodiment, Figure 1 As shown, the boom is provided with an articulated portion 90 hinged to the ends of the two masts 10, and a mounting portion is provided on the opposite surface of the mast 10. The super-lifting device also includes: two linear drive members 70, which are arranged one-to-one with the two masts 10, one end of the linear drive member 70 is hinged to the articulated portion 90, and the other end of the linear drive member 70 is hinged to the mounting portion and is used to drive the mast 10 to swing. The linear drive member 70 is arranged one-to-one with the mast 10, and the linear drive member 70 can drive the free end of the mast 10 to swing around the boom to meet different lifting requirements. Compared with setting a rotary drive member to drive the mast 10 to swing, the linear drive member 70 is extended or shortened to pull the mast 10 to swing more reliably, and the energy loss is low. The mast 10, the linear drive member 70 and the articulated portion 90 form a planar triangular structure to make the swing of the mast 10 more stable.

[0050] In a specific embodiment, the linear drive component 70 is a hydraulic cylinder. The hydraulic cylinder has the advantages of high stability and high driving power, and is suitable as a drive component for the swing of the mast 10. The hydraulic energy of the hydraulic cylinder can be directly obtained from the lifting equipment, and energy transmission is convenient.

[0051] In one embodiment, the linear drive member 70 is in communication connection with the control module, and the control module is further configured to: obtain the target lifting weight of the lifting equipment; control the telescopic drive mechanism 30 to apply a release force to the horizontal pull rope 20 to release the horizontal pull rope 20; determine the target swing angle of the mast 10 according to the target lifting weight; control the linear drive member 70 to drive the mast 10 to swing to the target swing angle; control the telescopic drive mechanism 30 to apply a tensioning force to the horizontal pull rope 20 to lock the horizontal pull rope 20. When the swing angle of the mast 10 needs to be adjusted, the control module can first obtain the target lifting weight of the lifting equipment, and the control module can determine the target swing angle of the mast 10 according to the target lifting weight. The control module can control the telescopic drive mechanism 30 to apply a release force to the horizontal pull rope 20 so that the mast 10 can swing smoothly, and the control module can control the linear drive member 70 to swing so that the swing angle of the mast 10 reaches the target swing angle. Then the control module can control the telescopic drive mechanism 30 to apply a tensioning force to the horizontal pull rope 20 to prevent the mast 10 from tipping over when there is a fault. By adopting the above-mentioned control device, the control module can control the linear drive member 70 and the telescopic drive mechanism 30 to automatically release or tighten the horizontal rope 20 and adjust the swing angle of the mast 10. The control logic is simple and the control efficiency is high, thereby improving the construction efficiency.

[0052] In one embodiment, after locking the horizontal rope 20, the extension length of the telescopic drive mechanism 30 is obtained; the current swing angle of the mast 10 is determined according to the extension length; when the absolute value of the difference between the current swing angle and the target swing angle is greater than the preset difference, the telescopic drive mechanism 30 is controlled to apply a release force to release the horizontal rope 20; the swing angle of the mast 10 is readjusted until the absolute value of the difference between the current swing angle and the target swing angle is less than or equal to the preset difference. After the horizontal rope 20 is tightened, the detection module can detect the extension length of the telescopic drive mechanism 30 and send a length signal to the control module. After obtaining the length signal, the control module can determine the current swing angle of the mast 10. When the difference between the current swing angle and the target swing angle is greater than the preset difference, it is determined that the swing angle of the mast 10 is greatly different from the target swing angle, and the controller can control the telescopic drive mechanism 30 to apply a release force to release the horizontal rope 20. Subsequently, the controller readjusts the swing angle of the mast 10 until the absolute value of the difference between the current swing angle and the target swing angle of the mast 10 is less than or equal to the preset difference. The control module is configured as the above-mentioned control method, which can make the swing angle of the mast 10 accurately match the actual lifting weight, preventing the lifting weight from exceeding the actual maximum lifting weight, thereby causing the boom stress to be damaged and an accident to occur.

[0053] In one embodiment, Figure 2 As shown, a row of storage components are provided on the opposite sides of the two masts 10, and the storage components include a plurality of storage members 81 arranged in parallel and spaced apart along the axial direction of the masts 10. The storage members 81 are used to store the horizontal pull rope 20 when the two masts 10 are parallel. When the two masts 10 are parallel, the super-lifting device is in a standby state, and the horizontal pull rope 20 is not tightened. The super-lifting device of the present application is provided with storage components on the opposite sides of the two masts 10, and each row of storage components forms a storage channel. At this time, one end of the horizontal pull rope 20 is connected to one of the masts 10, and the other end is connected to the other mast 10 through two storage channels in turn, thereby preventing the horizontal pull rope 20 from swinging randomly when the super-lifting device is parallel, causing interference with other components. When the super-lifting device is in a working state, the horizontal pull rope 20 is detached from the storage component and tightened between the two masts 10. The storage assembly provided by the embodiment of the present invention includes a plurality of storage members 81 arranged in parallel and spaced apart along the axial direction of the mast 10. The storage members 81 can fix the horizontal pull rope 20 at multiple points on the side wall of the mast 10 to prevent the horizontal pull rope 20 from accidentally detaching. The above-mentioned super-lifting device can store the horizontal pull rope 20 in a non-working state to prevent the horizontal pull rope 20 from interfering with other components of the lifting equipment.

[0054] Specifically, Figure 2 As shown, the multiple storage members 81 in each storage assembly form a storage channel (not shown in the figure) with the corresponding mast 10. When the two masts 10 are parallel, the horizontal pull rope 20 passes through the two storage channels in sequence and is connected to the mast 10. The multiple storage members 81 in each storage assembly form a storage channel, and the horizontal pull rope 20 can pass through the storage channel and be connected to the mast 10. The above storage assembly can make the storage of the horizontal pull rope 20 more stable and prevent the horizontal pull rope 20 from accidentally leaving the storage channel.

[0055] In one embodiment, the telescopic drive mechanism 30 is any one of a hoisting mechanism, a gas cylinder and an electric cylinder. The hoisting mechanism, the gas cylinder or the electric cylinder can also be used to tighten or loosen the horizontal pull rope 20 so as to adjust the angle of the mast 10.

[0056] By using the above-mentioned super-lifting device, when it is necessary to adjust the swing angle of the two masts 10, the horizontal pull rope 20 can be tightened or loosened to adjust the angle of the mast 10 of the super-lifting device, and when the current swing angle of the mast 10 is inconsistent with the target swing angle, the angle of the mast 10 can be automatically adjusted to make the mast 10 swing more accurately. Compared with the super-lifting device of the prior art, the technical solution provided by the embodiment of the present invention makes the angle adjustment of the mast 10 and the extension length adjustment of the telescopic drive mechanism 30 more convenient and accurate, thereby improving the construction efficiency and reducing the probability of construction accidents.

[0057] In one embodiment, a lifting equipment is provided, comprising a lifting arm and the above-mentioned superlifting device for the lifting equipment.

[0058] 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.

[0059] 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.

[0060] 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.

[0061] 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 superlifting device for lifting equipment, characterized in that: The lifting equipment comprises a lifting arm, and the super lifting device comprises: Two masts (10), the two masts (10) are at the same height, one end of the two masts (10) is hinged via a first connecting piece and can be rotatably mounted on the boom, and the other end is a free end and can swing relative to each other; A horizontal pull rope (20), a first end of the horizontal pull rope (20) being connected to any one of the masts (10); A telescopic drive mechanism (30), one end of the telescopic drive mechanism (30) is connected to another of the masts (10), and the other end of the telescopic drive mechanism (30) is connected to the second end of the horizontal pull rope (20), and the telescopic drive mechanism (30) is capable of performing linear telescopic movement to apply a release force or a tensioning force to the horizontal pull rope (20).

2. The superlifting device for lifting equipment according to claim 1, characterized in that: The super lifting device also includes: a detection module, mounted on the telescopic drive mechanism (30) and used to detect the extension length of the telescopic drive mechanism (30) and to send an extension length signal; The control module is in communication connection with the detection module and is configured to determine whether the telescopic drive mechanism (30) has reached its full extension or retracted position according to the extension length signal, and to control the telescopic drive mechanism (30) to stop moving after reaching its full extension or retracted position.

3. The superlifting device for lifting equipment according to claim 2, characterized in that: The telescopic drive mechanism (30) is a transverse pull cylinder, which is connected to the hydraulic circuit of the lifting equipment. One of the fixed end and the telescopic end of the transverse pull cylinder is installed on the mast (10), and the other is connected to the second end of the transverse pull rope (20).

4. The superlifting device for lifting equipment according to claim 3, characterized in that: The super-lifting device further comprises a connecting rod (50), wherein the connecting rod (50) is movably connected to the telescopic rod of the horizontal pull cylinder via a second connecting member (60), and the detection module comprises: A detection member (41) is provided on the connecting rod (50) and is located outside the cylinder body of the horizontal pull cylinder; The sensing element (42) is inductively matched with the detection element (41), and the number of the sensing elements (42) is multiple, and the multiple sensing elements (42) are arranged on the outer peripheral side of the transverse pull cylinder and are arranged in parallel and spaced apart along the length direction of the transverse pull cylinder.

5. The superlifting device for lifting equipment according to claim 2, characterized in that: The lifting arm is provided with a hinged portion (90) hinged to the ends of the two masts (10), and the opposite surface of the masts (10) is provided with a mounting portion. The super lifting device also includes: There are two linear drive members (70) arranged in one-to-one correspondence with the two masts (10), one end of the linear drive member (70) is hinged to the hinge portion (90), and the other end of the linear drive member (70) is hinged to the mounting portion and is used to drive the mast (10) to swing.

6. The superlifting device for lifting equipment according to claim 5, characterized in that: The linear drive member (70) is in communication with the control module, and the control module is further configured to: Obtaining a target lifting capacity of the lifting equipment; Controlling the telescopic drive mechanism (30) to apply a release force to the horizontal pull rope (20) to release the horizontal pull rope (20); Determining a target swing angle of the mast (10) according to the target lifting weight; Controlling the linear drive member (70) to drive the mast (10) to swing to the target swing angle; The telescopic drive mechanism (30) is controlled to apply a tensioning force to the horizontal pull rope (20) so as to lock the horizontal pull rope (20).

7. The superlifting device for lifting equipment according to claim 6, characterized in that: The control module is further configured to: After locking the horizontal pull rope (20), obtaining the elongated length of the telescopic drive mechanism (30); determining a current swing angle of the mast (10) according to the elongated length; When the absolute value of the difference between the current swing angle and the target swing angle is greater than a preset difference, controlling the telescopic drive mechanism (30) to apply a release force to release the horizontal pull rope (20); The swing angle of the mast (10) is readjusted until the absolute value of the difference between the current swing angle and the target swing angle is less than or equal to the preset difference.

8. The superlifting device for lifting equipment according to any one of claims 1 to 7, characterized in that: A row of storage components are provided on the opposite sides of the two masts (10), and the storage components include a plurality of storage members (81) arranged in parallel and spaced apart along the axial direction of the masts (10). The storage members (81) are used to store the transverse pull ropes (20) when the two masts (10) are parallel.

9. The superlifting device for lifting equipment according to claim 8, characterized in that: A storage channel is formed between the multiple storage members (81) in each group of the storage components and the corresponding masts (10). When the two masts (10) are parallel, the horizontal pull rope (20) passes through the two storage channels in sequence to connect with the masts (10).

10. A lifting device, characterized in that: The lifting equipment comprises a lifting arm and a superlifting device for the lifting equipment according to any one of claims 1 to 9.

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