Tower body self-supporting device

Abstract

The utility model discloses a tower body self-supporting device which comprises a supporting arm, a pull rod tensioning mechanism and a force measurement control assembly, the supporting arm is arranged on a tower body, the pull rod tensioning mechanism comprises a tensioning driving piece and a pull rod assembly, the tensioning driving piece is arranged on a tower body base and provided with a driving end, and the pull rod assembly is arranged on the supporting arm. The two ends of the pull rod assembly are connected with the driving end of the tensioning driving piece and the supporting arm in a one-to-one correspondence mode, the force measurement control assembly comprises a force measurement sensor used for detecting the tensioning force of the pull rod tensioning mechanism, and the tensioning force of the pull rod tensioning mechanism can be detected through the additionally-arranged force measurement control assembly in the working process of the tower crane; related personnel can perform corresponding processing according to detection data, the phenomenon that the stress of the pull rod assembly exceeds the standard is avoided, and the working safety of the whole tower crane is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting machinery, and in particular relates to a tower body self-supporting device. Background Art

[0002] When the operating height of a tower crane exceeds the independent height, it is generally necessary to use an attachment device to connect the tower body to the building to ensure the stability of the tower crane. However, there are no buildings near the installation location of some tower cranes (for example, wind power jib tower cranes), and it is impossible to attach and install them. At this time, in order to ensure that the tower crane has a higher independent height, a support device can be added to the upper part of the tower body. The tie rod structure in the support device can be set between the upper part of the tower body and the tower base, and tensioned by a tensioning cylinder. However, during the operation of the tower crane, the deformation of the tower body can easily cause the tie rod structure to have excessive stress. Utility Model Content

[0003] In view of the above-mentioned defects or shortcomings, the utility model provides a tower body self-supporting device, aiming to solve the technical problem that the existing tower body supporting device is prone to excessive stress during the operation of the tower crane.

[0004] To achieve the above-mentioned purpose, the first aspect of the utility model provides a tower body self-supporting device, wherein the tower body self-supporting device includes a support arm, a tie rod tensioning mechanism and a force measurement control assembly; the support arm is arranged on the tower body; the tie rod tensioning mechanism includes a tensioning drive and a tie rod assembly, the tensioning drive is arranged on the tower body base and has a driving end, and the two ends of the tie rod assembly are respectively connected to the driving end of the tensioning drive and the support arm in a one-to-one correspondence; the force measurement control assembly includes a force sensor for detecting the tensioning tension of the tie rod tensioning mechanism.

[0005] In the embodiment of the utility model, the support arm is detachably mounted on the main chord of the tower body standard section and extends along the diagonal direction of the tower body standard section.

[0006] In an embodiment of the utility model, the height dimension of the support arm is gradually reduced in the extension direction outward from the tower body, so that the inner end of the support arm can be provided with at least two first connection parts that are detachably connected to the main chord of the standard section of the tower body, and the outer end of the support arm can be provided with at least one second connection part that is connected to the pull rod assembly.

[0007] In an embodiment of the utility model, the support arm includes an upper connecting beam, a lower connecting beam and a web connecting structure. The upper connecting beam and the lower connecting beam are arranged in sequence from top to bottom and are both extended outward from the main chord. The upper connecting beam and the lower connecting beam are gradually approached in the extension direction of the main chord outward. The web connecting structure connects the upper connecting beam and the lower connecting beam, and the inner end of the upper connecting beam and the inner end of the lower connecting beam both have a first connecting portion.

[0008] In the embodiment of the utility model, the abdominal connection structure is configured as a abdominal rod or a abdominal plate.

[0009] In an embodiment of the utility model, the tensioning drive member is configured as a telescopic oil cylinder and includes a cylinder body, a movable rod and a locking nut. The cylinder body is disposed on the base of the tower body, the movable rod is movably disposed in the cylinder body and both ends extend out of the cylinder body, and the first end of the movable rod disposed upward is configured as a driving end, and the second end of the movable rod disposed downward is configured as an externally threaded rod body, and the locking nut is sleeved on the externally threaded rod body and can be tightened until it abuts against the cylinder body.

[0010] In an embodiment of the utility model, the pull rod tensioning mechanism also includes at least two pull plate bodies which are arranged on the tower base in sequence around the cylinder body, and the at least two pull plate bodies are respectively connected to the cylinder body, and can support the first end of the movable rod in the cylinder body to be set upward, and a force sensor for detecting the tensioning force is provided on the pull plate body.

[0011] In an embodiment of the utility model, the tie rod assembly includes at least two tie rod monomers, and the at least two tie rod monomers are movably connected in sequence, so that the tie rod assembly can be switched between an extended state and a retracted state.

[0012] In an embodiment of the utility model, at least two pull rod monomers are arranged in sequence along the length direction, and any two adjacent pull rod monomers are connected by a connecting monomer, and the two ends of the connecting monomer are respectively provided with a first hinge part and a second hinge part, and the two adjacent pull rod monomers are respectively and one by one movably hinged with the first hinge part and the second hinge part, so that at least two pull rod monomers can be flipped in sequence and can be switched between an unfolded and extended state and a folded and retracted state, and at least two pull rod monomers can be horizontally arranged in sequence along the height direction in the folded and retracted state.

[0013] In an embodiment of the utility model, at least two pull rod monomers are arranged in sequence along the length direction, and any two adjacent pull rod monomers are connected by a pin structure, and at least two pull rod monomers are formed with a folding accommodating space. The end of the rear pull rod monomer can be extended into the folding accommodating space of the previous pull rod monomer and can be movably hinged by the pin structure, so that at least two pull rod monomers can be flipped in sequence and can be switched between an unfolded and extended state and a folded and retracted state. The rear pull rod monomer can be horizontally placed in the folding accommodating space of the previous pull rod monomer when it is in the folded and retracted state.

[0014] In the embodiment of the utility model, at least two pull rod units are configured as telescopic tube units and are telescopically mounted one after another in the direction from inside to outside, so that the pull rod assembly can be switched between a pulled out extended state and a retracted retracted state.

[0015] In an embodiment of the utility model, the tower body self-supporting device also includes an auxiliary lifting mechanism arranged on the balance arm and used to lift the support arm. The rotation radius of the lifting hook in the auxiliary lifting mechanism on the tower body is set to be no less than the distance between the lifting center of gravity of the support arm and the tower body.

[0016] To achieve the above-mentioned object, the second aspect of the utility model provides a tower crane, wherein the tower crane comprises the tower body self-supporting device described above.

[0017] Through the above technical solution, the tower body self-supporting device provided by the utility model has the following beneficial effects:

[0018] When the above-mentioned tower body self-supporting device is used, since it includes a support arm, a tie rod tensioning mechanism and a force measuring control component, the support arm is arranged on the tower body, the tensioning drive in the tie rod tensioning mechanism is arranged on the tower body base and has a driving end, and the two ends of the tie rod assembly are respectively connected one-to-one with the driving end of the tensioning drive and the support arm. The tensioning support of the tower body can be achieved by pulling the tie rod assembly through the tensioning drive, and the tensioning tension of the tie rod tensioning mechanism can be detected through the added force measuring control component during the operation of the tower crane, so that relevant personnel can make corresponding processing according to the detection data to avoid the phenomenon of excessive stress in the tie rod assembly and improve the safety of the entire tower crane operation.

[0019] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0021] Figure 1 It is a structural schematic diagram of a self-supporting device in which a support arm is installed on a standard section of a tower body to tension and support the tower body according to an embodiment of the utility model;

[0022] Figure 2 It is a structural schematic diagram of a self-supporting device in which a support arm is installed on a transition section to tension and support a tower body according to an embodiment of the utility model;

[0023] Figure 3 It is a structural schematic diagram of a support arm installed on a main chord according to an embodiment of the utility model;

[0024] Figure 4 It is a structural schematic diagram of the connection between the support arm and the pull rod assembly according to one embodiment of the utility model;

[0025] Figure 5 It is a structural schematic diagram of a support arm according to an embodiment of the utility model;

[0026] Figure 6 is a structural schematic diagram of a support arm according to another embodiment of the utility model;

[0027] Figure 7 It is a structural schematic diagram of a tensioning driving member (telescopic cylinder) according to an embodiment of the utility model;

[0028] Figure 8 It is a structural schematic diagram of the pull rod assembly in a folded and retracted state according to the first embodiment of the utility model;

[0029] Fig. 9 It is a structural schematic diagram of a pull plate unit according to the first embodiment of the utility model;

[0030] Fig.10 yes Fig. 9 A schematic diagram of the enlarged structure at A in the middle;

[0031] Fig.11 It is a schematic diagram of the structure of the connecting monomer according to the first embodiment of the utility model;

[0032] Fig.12 It is a structural schematic diagram of the pull rod assembly in a folded and retracted state according to the second embodiment of the utility model;

[0033] Fig.13 A schematic structural diagram of a pull rod assembly in a second embodiment of the present utility model in an unfolded and extended state;

[0034] Fig.14 yes Fig.13 A schematic diagram of a local enlarged structure;

[0035] Fig.15 It is a structural schematic diagram of a pull rod assembly according to the third embodiment of the utility model;

[0036] Fig.16 yes Fig.15 A schematic diagram of a local enlarged structure;

[0037] Fig.17 It is a structural schematic diagram of an auxiliary lifting mechanism installed on a balance arm according to an embodiment of the utility model;

[0038] Fig.18 It is a schematic diagram of the dimensioning of parameters H0, H and K according to an embodiment of the utility model;

[0039] Fig.19 yes Fig.18 Schematic diagram of the dimensioning of parameters D, L0 and L at B.

[0040] Description of reference numerals:

[0041] 10 tie rod assembly 100 tie rod monomer

[0042] 110 first pull rod plate 111 first positioning block

[0043] 112 second positioning block 113 block connector

[0044] 114 first hinge hole 120 second tie rod plate

[0045] 121: connecting plate 122: folding accommodation space

[0046] 130 telescopic tube monomer 131 first joint

[0047] 132 second joint 200 flip connection structure

[0048] 210 connecting monomer 211 first connecting plate

[0049] 212 second connecting plate body 213 third connecting plate body

[0050] 214 first clamping space 215 second clamping space

[0051] 216 second hinge hole 217 connecting fastener

[0052] 218 sleeve part 220 pin structure

[0053] 300 Tensioning drive 310 Cylinder

[0054] 311 ear plate part 312 step surface

[0055] 320 moving rod 321 external threaded rod

[0056] 330 Locking nut 340 Pull plate body

[0057] 341 force sensor 400 support arm

[0058] 410 upper connecting beam 420 lower connecting beam

[0059] 430 Belly bar 440 Belly plate

[0060] 450 first connection part 460 second connection part

[0061] 470 reinforcement plate

[0062] 500 Auxiliary lifting mechanism 510 Lifting cantilever beam

[0063] 520 Rewinding and unwinding drive assembly 530 Lifting hook assembly

[0064] 600 Tower 610 Tower Base

[0065] 620 Main chord 700 Transition section

[0066] 800 Balance Arm DETAILED DESCRIPTION

[0067] 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.

[0068] The tower body self-supporting device of the utility model is described below with reference to the accompanying drawings.

[0069] like Figure 1 and Figure 2 As shown, the utility model provides a tower body self-supporting device, wherein the tower body self-supporting device comprises:

[0070] A support arm 400 is provided on the tower body 600;

[0071] The tension rod tensioning mechanism includes a tensioning driving member 300 and a tension rod assembly 10. The tensioning driving member 300 is arranged on the tower body base 610 and has a driving end. The two ends of the tension rod assembly 10 are respectively connected to the driving end of the tensioning driving member 300 and the support arm 400 in a one-to-one correspondence;

[0072] The force measurement control assembly includes a force measurement sensor 341 for detecting the tensioning force of the tensioning mechanism of the pull rod.

[0073] When the above-mentioned tower body self-supporting device is used, since it includes a support arm 400, a tie rod tensioning mechanism and a force measuring control component, the support arm 400 is arranged on the tower body 600, and the tensioning drive 300 in the tie rod tensioning mechanism is arranged on the tower body base 610 and has a driving end, and the two ends of the tie rod assembly 10 are respectively connected one-to-one with the driving end of the tensioning drive 300 and the support arm 400. Then, the tensioning support of the tower body 600 can be achieved by pulling the tie rod assembly 10 through the tensioning drive 300, and during the operation of the tower crane, the tensioning tension of the tie rod tensioning mechanism can be detected through the additional force measuring control component, so that relevant personnel can perform corresponding processing according to the detection data to avoid the phenomenon of excessive stress in the tie rod assembly 10, thereby improving the safety of the entire tower crane operation.

[0074] Specifically, Figure 1As shown, the support arm 400 can be arranged on a standard section of the tower body, such as Figure 2 As shown, the support arm 400 can also be arranged on the transition section 700. The installation position of the support arm 400 is selected according to the specific situation. Generally, the support arm 400 can be arranged on the upper section of the tower body 600, and the upper section can be specifically arranged at a position above 1 / 3 of the tower body height. At the same time, the tower body base 610 can refer to the tower body bottom frame, or it can refer to a fixed foundation (concrete foundation). The tensioning drive member 300 is arranged on the tower body base 610, which can facilitate the control and adjustment of the tensioning drive member 300, and the tensioning drive member 300 can be set as a retractable and unreeling drive or a telescopic drive. The telescopic drive is, for example, a telescopic oil cylinder, a telescopic gas cylinder or a telescopic electric cylinder, etc. The following embodiments will be specifically described with a telescopic oil cylinder.

[0075] It should be noted that the force measurement control component is not only used to detect the tension of the tension rod tensioning mechanism, but also can generate an over-limit instruction when the detection data exceeds the safety threshold range, so as to prompt corresponding processing to avoid the phenomenon of excessive tension of the tension rod assembly 10, thereby improving the safety of the entire tower crane. The over-limit instruction generated by the force measurement control component includes but is not limited to the controllable alarm to prompt the corresponding personnel to take the action of releasing the over-limit, or the corresponding device can be controlled to automatically adjust to automatically release the over-limit.

[0076] See also Figure 1 , Figure 2 and 7 In the embodiment of the utility model, the force control assembly includes a controller and a force sensor 341. The force sensor 341 is used to detect the tensioning force of the tensioning mechanism of the pull rod. The controller is respectively connected to the force sensor 341 and the tensioning drive 300 in communication and is configured as follows:

[0077] Receiving detection data from the force sensor 341;

[0078] Generate an over-limit instruction when the detection data exceeds the safety threshold range;

[0079] The tensioning drive 300 is controlled according to the over-limit instruction so that the detection data of the force sensor 341 drops to within the safety threshold range.

[0080] Further, after receiving the detection data of the force sensor 341, the controller first compares the detection data of the force sensor 341 with the pre-stored safety threshold range to obtain a comparison result. If the comparison result is that the detection data exceeds the safety threshold range, an over-limit instruction can be generated. Of course, if the detection data is within the safety threshold range, no over-limit instruction will be generated, and the generation of the over-limit instruction enables the controller to automatically control and adjust the tensioning drive 300, and the adjustment result needs to meet the subsequent detection data of the force sensor 341 falling within the safety threshold range, so as to achieve the purpose of quickly releasing the over-limit. More specifically, the controller can control the tensioning drive 300 to telescopically move in the direction of loosening the pull rod assembly 10 according to the over-limit instruction.

[0081] In the embodiment of the utility model, the force measurement control assembly includes a controller, a force sensor 341 and an alarm. The force sensor 341 is used to detect the tensioning force of the tensioning mechanism of the pull rod. The controller is respectively connected to the force sensor 341 and the alarm in communication and is configured as follows:

[0082] Receiving detection data from the force sensor 341;

[0083] Generate an over-limit instruction when the detection data exceeds the safety threshold range;

[0084] The alarm is controlled to sound an alarm according to the over-limit instruction.

[0085] Further, after receiving the detection data of the force sensor 341, the controller first compares the detection data of the force sensor 341 with the pre-stored safety threshold range to obtain a comparison result. If the comparison result is that the detection data exceeds the safety threshold range, an over-limit instruction can be generated. Of course, if the detection data is within the safety threshold range, no over-limit instruction will be generated, and the generation of the over-limit instruction enables the controller to control the alarm to sound an alarm to prompt the corresponding personnel to take action to remove the over-limit, and the alarm will not stop sounding the alarm until the over-limit is removed. Furthermore, the alarm includes but is not limited to a buzzer and a three-color light alarm.

[0086] In the embodiment of the present utility model, the installation height of the support arm 400 on the tower body 600 is H=(0.5-0.6)H0, where H0 is set to the total height of the tower body. Fig.18 .

[0087] It can be understood that the connection strength between the tower standard sections is one of the key factors limiting the tower height. If a pin connection is used, the pull-out force that the pin connection can withstand is set to F, and the maximum pull-out force of the tower crane main chord is the pull-out force F between the tower standard sections, then the calculation formula of the pull-out force F can be set to:

[0088]

[0089] Where M max - unbalanced moment, L - diagonal center distance of tower body, V - vertical force of tower body.

[0090] It can be seen from the calculation formula of pull-out resistance that M max The larger the value, the larger the F value. If there is no supporting device, the bending moment M will increase with the increase of the tower height. max The bending moment transmitted to the lowest tower body base 610 will be larger, and F will increase. When F is restricted by the connection joints of the tower body 600, the tower body 600 cannot be increased any higher.

[0091] After the self-supporting device provided by the utility model is added to the tower body 600, a part of the head bending moment M of the tower body 600 will be transmitted to the tower body base 610 through the device, thereby greatly reducing the tower body bending moment. Therefore, the tower body 600 can be further raised. Specifically, the design of the installation height H of the support arm 400 on the tower body 600 needs to consider the influence of the real-time strength σ of the joint strength between the standard sections of the tower body. The real-time strength refers to the real-time stress of the joint when the tower crane has different lifting weights. Let y = σ, x = H / H0, H0 is set to the total height of the tower body, and through multiple finite element model iterations, the formula is calculated: y = -227551x 4 +540035x 3 -475618x 2 +184308x-26271 can be calculated, and when x=0.5~0.6, y has a minimum value, which can further reduce the strength of the joint.

[0092] In the embodiment of the present utility model, the calculation formula of the length L0 of the support arm 400 is set as: L0+L / 2=K / (3-5);

[0093] In the formula, K is set as the distance between the two diagonally arranged tensioning drive members 300, and L is set as the diagonal center distance of the tower body. At the same time, the dimensioning of the parameters K, L0 and L can be specifically referred to Fig.18 and Fig.19 .

[0094] Specifically, the number of support arms 400 and tie rod tensioning mechanisms in the entire self-supporting device can be four, and the four support arms 400 are respectively and one-to-one correspondingly connected to the four main chords 620 on the standard section of the tower body for detachable connection, and the four support arms 400 are all extended along the diagonal direction corresponding to the standard section of the tower body, and the four tie rod tensioning mechanisms are respectively and one-to-one correspondingly arranged with the four support arms 400, and the number of force sensors 341 in the force control assembly can also be four, and the four force sensors 341 are respectively and one-to-one correspondingly used to detect the tensioning force of the four tie rod tensioning mechanisms.

[0095] In order to ensure that the entire self-supporting device supports the tower body 600 in a tapered shape and the supporting effect is optimal, the length of a single support arm 400 needs to be designed. After determining the installation height of the support arm 400, the length from the outer end of the support arm 400 (that is, the connecting end of the tie rod assembly 10) to the center of the tower body can be determined to be within the range of D=K / 3~K / 5. Specifically, D=K / 4 has the best supporting effect. In addition, according to the above installation method of the support arm 400, it can be obtained that L0+L / 2=D, so that the relationship between the length L0 of the support arm 400 and K and L can be obtained. More specifically, when D=K / 3~K / 5 is within the range, the calculation formula of the length L0 of the support arm 400 is set to: L0+L / 2=K / (3~5); when D=K / 4 is preferred, the calculation formula of the length L0 of the support arm 400 is set to: L0+L / 2=K / 4.

[0096] It should be particularly noted that no matter how the support arm 400 is installed on the standard section, the above length design formula of the support arm 400 can meet the requirements.

[0097] See also Figures 3 to 6 In the embodiment of the utility model, the support arm 400 is detachably mounted on the main chord 620 of the tower body standard section and extends in the diagonal direction of the tower body standard section, that is, the support arm 400 can directly support the main chord 620, thereby facilitating the strengthening of the main chord 620. In addition, the height dimension of the support arm 400 is gradually reduced in the direction extending outward from the main chord 620 of the tower body 600, so that the inner end of the support arm 400 can be provided with at least two first connection parts 450 detachably connected to the main chord 620, and the outer end of the support arm 400 can be provided with at least one second connection part 460 connected to the tie rod assembly 10, thereby ensuring the pulling effect of the support arm 400 on the tie rod assembly 10 while improving the connection strength between the support frame and the main chord 620.

[0098] Specifically, the inner end of the support arm 400 is provided with two first connection parts 450 in sequence from top to bottom, and each first connection part 450 has two forked lugs arranged opposite to each other, and the main chord 620 can be clamped between the two forked lugs of each first connection part 450, and the two forked lugs can be detachably connected by installing fasteners to realize the detachable installation of the first connection part 450 on the main chord 620, and the outer end of the support arm 400 can be provided with a second connection part 460, and the second connection part 460 is provided with a hole structure, so as to facilitate the detachable connection with the tension rod assembly 10 through the hole structure. It should be particularly noted that the inner end refers to the end arranged close to the main chord 620, and the outer end refers to the end arranged away from the main chord 620.

[0099] In the embodiment of the utility model, the support arm 400 includes an upper connecting beam 410, a lower connecting beam 420 and a web connecting structure, the upper connecting beam 410 and the lower connecting beam 420 are sequentially arranged at intervals from top to bottom and are both extended outward from the main chord 620, and the upper connecting beam 410 and the lower connecting beam 420 are gradually arranged close to each other in the extension direction of the main chord 620 outward, the web connecting structure connects the upper connecting beam 410 and the lower connecting beam 420, and the inner end of the upper connecting beam 410 and the inner end of the lower connecting beam 420 both have a first connecting portion 450. That is, by respectively arranging the first connecting portion 450 on the upper connecting beam 410 and the lower connecting beam 420, the connection strength can be ensured and the manufacturing of the support arm 400 can be facilitated. In addition, the web connecting structure can play a role in strengthening the connection strength. Specifically, the outer end of the upper connecting beam 410 and the outer end of the lower connecting beam 420 can be connected through the second connecting portion 460. Of course, the utility model is not limited to this. The outer end of the upper connecting beam 410 and the outer end of the lower connecting beam 420 can also be arranged at intervals, and the second connecting portion 460 is arranged at the outer end of the lower connecting beam 420 or at a position close to the outer end.

[0100] like Figures 3 to 5 As shown, in one embodiment of the utility model, the web connection structure can be set to a plurality of web rods 430, and the plurality of web rods 430 are arranged in sequence and spaced apart along the extension direction of the support arm 400 and are all placed between the upper connecting beam 410 and the lower connecting beam 420, and the upper and lower ends of each web rod 430 are respectively connected to the upper connecting beam 410 and the lower connecting beam 420 in a one-to-one correspondence. In addition, the upper connecting beam 410 and the lower connecting beam 420 can both be set to H-shaped steel, and a connecting reinforcement plate 470 is also provided between the upper connecting beam 410 and the lower connecting beam 420, and the reinforcement plate 470 is provided at the outermost side of the plurality of web rods 430.

[0101] like Figure 6 As shown, in another embodiment of the utility model, the belly connection structure can be set to a web 440, the web 440 is set in a trapezoidal shape, and the web 440 is placed between the upper connecting beam 410 and the lower connecting beam 420, and the upper and lower ends of the web 440 are respectively connected to the upper connecting beam 410 and the lower connecting beam 420 in a one-to-one correspondence. In addition, the upper connecting beam 410 and the lower connecting beam 420 can both be set to flat plates.

[0102] like Figure 1 , Figure 2 and Figure 7As shown, in an embodiment of the utility model, the tensioning drive member 300 is configured as a telescopic oil cylinder and includes a cylinder body 310, a movable rod 320 and a locking nut 330. The cylinder body 310 is disposed on a tower base 610. The movable rod 320 is movably disposed in the cylinder body 310 and both ends extend out of the cylinder body 310. The first end of the movable rod 320 disposed upward is configured as a driving end, and the second end of the movable rod 320 disposed downward is configured as an externally threaded rod shaft 321. The locking nut 330 is sleeved on the externally threaded rod shaft 321 and can be tightened until it abuts against the cylinder body 310. After the cylinder body 310 is arranged on the tower body base 610, and the rod assembly 10 is respectively connected to the first end of the moving rod 320 and the support arm 400, the tension driving member 300 can be controlled to tension the rod assembly 10, and the locking nut 330 can be adjusted when the moving rod 320 moves until the tensioning force reaches a preset value (pre-tensioning force), so that the locking nut 330 is tightened to abut against the cylinder body 310, so that the tensioning force on the moving rod 320 can be distributed to the cylinder body 310, and the size of the oil cylinder can be significantly reduced, thereby achieving the purpose of reducing costs. Specifically, when the tension driving member 300 is set as a telescopic oil cylinder, the moving rod 320 is a piston rod.

[0103] In an embodiment of the utility model, the tensioning mechanism of the pull rod further includes at least two pull plate bodies 340 which are arranged on the tower body base 610 in sequence and at intervals around the cylinder body 310, and the at least two pull plate bodies 340 are respectively connected to the cylinder body 310, and can support the first end of the moving rod 320 in the cylinder body 310 to be arranged upward. That is, the installation of the cylinder body 310 on the tower body base 610 can be achieved by fixing at least two pull plate bodies 340 on the tower body base 610, and by supporting the first end of the moving rod 320 to be arranged upward, the stability and reliability of the tensioning movement can be ensured. Specifically, the number of the pull plate bodies 340 can be set to two, and the two pull plate bodies 340 are respectively arranged on opposite sides of the cylinder body 310, and the lower ends of the two pull plate bodies 340 are arranged on the tower body base 610, and the upper ends are respectively detachably connected to the cylinder body 310.

[0104] In the embodiment of the utility model, a force sensor 341 for detecting the tensioning force is provided on the pull plate body 340. By adding the force sensor 341, it is convenient to detect the tensioning force on the pull rod assembly 10 in real time during the operation of the tower crane to ensure the safety of the tower crane. Specifically, since the locking nut 330 is tightened to abut against the cylinder body 310, and the pull plate body 340 is connected to the cylinder body 310, the pull plate body 340 can also share the tensioning force on the pull rod assembly 10, and the force sensor 341 is added to the pull plate body 340 to detect the tensioning force. More specifically, the plate pulling body 340 includes an upper plate and a lower plate which are arranged in sequence from top to bottom. The lower end of the lower plate is arranged on the tower body base 610. The upper plate and the lower plate are connected via a plate pulling sensor which is a force sensor 341. The upper end of the upper plate is connected to the cylinder 310 and can cooperate with other plate pulling bodies 340 to support the cylinder 310. Of course, the utility model is not limited to this. The force sensor 341 can also be set as a pin sensor. The plate pulling body 340 and the cylinder 310 can be connected in series via the pin sensor. In addition, the force sensor 341 is not limited to being arranged on the plate pulling body 340, but can also be arranged on the rod assembly 10, for example, between two adjacent rod pulling bodies 100, or between the rod assembly 10 and the support arm 400.

[0105] It should be noted that the force-bearing process of the tie rod assembly 10 in the present invention is divided into three steps:

[0106] Step 1: pre-tightening stage, the first end of the movable rod 320 is retracted to tighten the pull plate assembly;

[0107] Step 2: After the pre-tightening tension of the telescopic oil cylinder is reached, the locking nut 330 is adjusted so that the locking nut 330 is tightened until it abuts against the cylinder body 310;

[0108] Step 3: When the tower crane is working, due to the deformation of the tower body, additional tension will be generated on the pull plate assembly, and the tension at this time can be detected by the force sensor 341.

[0109] In the embodiment of the utility model, at least two ear plate parts 311 are sequentially arranged at intervals along the circumferential direction on the outer side of the cylinder body 310, and the at least two ear plate parts 311 are detachably connected to at least two pull plate bodies 340 through the cylinder body 310 connecting piece. The ear plate part 311 is added to the outer side of the cylinder body 310, which can facilitate the detachable connection with the pull plate body 340. Specifically, the upper end of the pull plate body 340 and the ear plate part 311 are both provided with connection holes, and the ear plate part 311 of the cylinder body 310 can be placed on one side of the upper end of the pull plate body 340, and the connection holes of the two are arranged to be connected, and then the cylinder body 310 connecting piece is sequentially penetrated through the connection holes of the two for fastening connection, and the cylinder body 310 connecting piece can be set as a bolt and nut structure. More specifically, the upper end of the pulling plate body 340 (upper plate body) may be formed with two forked plate portions that are relatively spaced apart, and both forked plate portions are provided with connecting holes, and the ear plate portion 311 may be placed between the two forked plate portions, and the ear plate portion 311 and the two forked plate portions may be connected in series in sequence through the cylinder body 310 connecting piece to realize the clamping connection of the upper end of the pulling plate body 340 to the ear plate portion 311.

[0110] In the embodiment of the utility model, the inner peripheral wall of the cylinder 310 is formed with a step surface 312 arranged toward the external threaded rod 321, and the piston body on the movable rod 320 faces the step surface 312 and is movably arranged in the inner cavity of the cylinder 310. That is, the step surface 312 achieves blocking of the piston body in the inner cavity of the cylinder 310, and because the step surface 312 is arranged toward the external threaded rod 321, the maximum extension length of the first end of the movable rod 320 is limited, so that the oil filling port can be arranged in the circumferential direction of the cylinder 310, and there is no need to open the oil filling port in the end direction, thereby ensuring the reliability of the end-to-end seal. Specifically, the inner cavity of the cylinder body 310 can be bounded by a step surface 312, the inner cavity above the step surface 312 is a small cavity, and the inner cavity below the step surface 312 is a large cavity, and a small cavity oil inlet is opened on the peripheral wall of the cylinder body 310 above the step surface 312, and a large cavity oil inlet is opened on the peripheral wall of the cylinder body 310 below the step surface 312 and close to the lower end. When the tensioning drive 300 is controlled to tension and pull the pull rod assembly 10, the small cavity oil inlet can be controlled to fill with oil, so that the moving rod 320 moves downward.

[0111] like Figures 8 to 16As shown, in the embodiment of the utility model, the tie rod assembly 10 includes a tie rod monomer 100, and the number of the tie rod monomers 100 is at least two, and at least two tie rod monomers 100 are movably connected in sequence, so that the tie rod assembly 10 can switch between an extended state and a retracted state. The tie rod assembly 10 is configured to be formed by at least two tie rod monomers 100 being movably connected in sequence, so that the tie rod assembly 10 has an extended state and a retracted state, and the tie rod assembly 10 can be in an extended state when performing tensioning support assembly operations, and the tie rod assembly 10 can be switched from an extended state to a retracted state before assembly and after disassembly, so that the length of the tie rod assembly 10 is reduced, thereby achieving the purpose of facilitating storage and transportation.

[0112] In the first and second embodiments of the utility model, at least two tie rod monomers 100 are arranged in sequence along the length direction, and any two adjacent tie rod monomers 100 are connected by a flip connection structure 200, so that at least two tie rod monomers 100 can be flipped in sequence and can be switched between the unfolded and extended state and the folded and retracted state, and at least two tie rod monomers 100 are used to be arranged horizontally when in the folded and retracted state. By adding the flip connection structure 200, the folding mode of the tie rod assembly 10 can be folded and retracted, which is not only convenient for assembly, but also can quickly realize state switching.

[0113] Specifically, when tension support is required between the upper section of the tower body 600 and the tower body base 610, the rod assembly 10 can be switched to an expanded and extended state. The expanded and extended state means that each rod unit 100 in the rod assembly 10 is flipped to the rear side of the previous rod unit 100. At this time, the length of the rod assembly 10 is the largest. When the rod assembly 10 needs to be stored, the rod assembly 10 can be switched to a folded and retracted state. The folded and retracted state means that each rod unit 100 in the rod assembly 10 is folded and flipped to be placed in parallel with the previous rod unit 100. Specifically, each rod unit 100 can be placed horizontally. At this time, the length of the rod assembly 10 is the smallest, which makes it convenient to store and transport the rod assembly 10 before and after assembly.

[0114] In addition, at least two tie rod monomers 100 can be placed horizontally when in a folded and retracted state, which can improve the stability of the tie rod assembly 10 during transportation. In addition, there can be multiple tie rod monomers 100, and multiple tie rod monomers 100 are connected in sequence through the flip connection structure 200. The number of tie rod monomers 100 can be set according to specific circumstances.

[0115] See also Figures 8 to 11In the first embodiment of the utility model, the flip connection structure 200 can be set as a connection monomer 210, and the two ends of the connection monomer 210 are respectively provided with a first hinge and a second hinge, and the two adjacent pull rod monomers 100 are respectively and one by one correspondingly movably hinged with the first hinge and the second hinge, and at least two pull rod monomers 100 can be arranged horizontally in sequence along the height direction in the folded and retracted state. Then, by setting the connection monomer 210, not only the folding and retracting of the pull rod assembly 10 is realized, but also the flip hinge points of the two adjacent pull rod monomers 100 can be set separately, so that the folding and flipping are smoother and more flexible. Specifically, the first hinge hole 114 can be opened at both ends of the pull rod monomer 100, and the second hinge hole 216 can be opened on the first hinge and the second hinge, and the pull rod monomer 100 is movably hinged with the connection monomer 210 through the hinge shaft penetrating the first hinge hole 114 and the second hinge hole 216. In addition, when the tie rod assembly 10 is in the folded and retracted state, the connecting unit 210 connecting two adjacent tie rod units 100 is arranged vertically.

[0116] In the first embodiment of the utility model, the connecting monomer 210 includes a first connecting plate body 211 and a second connecting plate body 212, which are arranged in a relative spacing and connected, and the first ends of the first connecting plate body 211 and the second connecting plate body 212 are set as a first hinge part and form a first clamping space 214, and the second ends of the first connecting plate body 211 and the second connecting plate body 212 are set as a second hinge part and form a second clamping space 215, and the first clamping space 214 and the second clamping space 215 can be inserted into the rod monomer 100, so that the rod monomer 100 and the connecting monomer 210 are connected in series and movable hinged through the hinge axis. That is, the connecting monomer 210 can clamp and connect the rod monomer 100, which plays a role in improving the connection strength and stability, and resisting lateral loads. Furthermore, the first connecting plate body 211 and the second connecting plate body 212 are fixedly connected in the middle area (that is, the area between the first hinge part and the second hinge part), and the first ends of the first connecting plate body 211 and the second connecting plate body 212, as well as the second ends of the first connecting plate body 211 and the second connecting plate body 212 can be provided with second hinge holes 216. After the end of the pull rod monomer 100 extends into the clamping space, the first hinge hole 114 on the pull rod monomer 100 can be connected with the second hinge hole 216 on the first connecting plate body and the second connecting plate body 212, and the hinge axis is sequentially penetrated through all the connected first hinge holes 114 and second hinge holes 216 to connect the pull rod monomer 100 and the connecting monomer 210 in series and realize movable hinge.

[0117] In the first embodiment of the utility model, the tie rod monomer 100 includes two first tie rod plate bodies 110, and the two first tie rod plate bodies 110 are arranged relatively spaced apart and connected. The connecting monomer 210 also includes a third connecting plate body 213. The first connecting plate body 211, the second connecting plate body 212 and the third connecting plate body 213 are arranged relatively spaced apart and connected in sequence, and the first ends of the first connecting plate body 211, the second connecting plate body 212 and the third connecting plate body 213 are set as first hinge parts and form two first clamping spaces 214, and the second ends of the first connecting plate body 211, the second connecting plate body 212 and the third connecting plate body 213 are set as second hinge parts and form two second clamping spaces 215. The two first clamping spaces 214 and the two second clamping spaces 215 can be inserted into by the two first tie rod plate bodies 110 one by one. That is, the rod monomer 100 can be set as a double-plate structure, and the double-plate structure obviously plays a role in strengthening the rod monomer 100. In addition, in order to continue to realize the clamping of the rod monomer 100 with a double-plate structure, the connecting monomer 210 can also be set as a three-plate structure. The two first rod plates 110 in the rod monomer 100 are respectively clamped in different clamping spaces one by one, thereby improving the stability of the flipping movement.

[0118] Specifically, a first hinge hole 114 is provided at the first end of the two first tie rod plate bodies 110 and a second end of the two first tie rod plate bodies 110, and a second hinge hole 216 is provided at the first end of the first connecting plate body 211, the second connecting plate body 212 and the third connecting plate body 213, respectively. After the ends of the two first tie rod plate bodies 110 of the tie rod monomer 100 extend one by one into the two clamping spaces set at the same end, the first hinge holes 114 on the two first tie rod plate bodies 110 can be connected with the second hinge holes 216 on the first connecting plate body, the second connecting plate body 212 and the third connecting plate body 213, and the hinge axis passes through all the connected first hinge holes 114 and the second hinge holes 216 in sequence to connect the tie rod monomer 100 and the connecting monomer 210 in series and realize active hinge.

[0119] In the first embodiment of the utility model, the rod unit 100 further includes a first positioning block 111, a second positioning block 112 and a block connector 113. The first positioning block 111 and the second positioning block 112 are both formed with two positioning slots arranged at intervals. The two positioning slots of the first positioning block 111 can be correspondingly mounted on the first long sides of the two first rod plates 110 of the rod unit 100, and the two positioning slots of the second positioning block 112 can be correspondingly mounted on the second long sides of the two first rod plates 110 of the rod unit 100, and the first positioning block 111 and the second positioning block 112 are detachably connected via the block connector 113. That is, the two first rod plates 110 of the rod unit 100 are detachably connected to facilitate disassembly and replacement. The arrangement of the first positioning block 111 and the second positioning block 112 not only facilitates the positioning of the two first tie rod plates 110 before the detachable connection, but also facilitates the adjustment of the position of the first tie rod plates 110. It should be particularly noted that the first long sides and the second long sides of the two first tie rod plates 110 refer to the two sides of the two first tie rod plates 110 that are arranged opposite to each other along the length direction.

[0120] Specifically, the width of the entity part between the two positioning slots of the first positioning block 111 and the two positioning slots of the second positioning block 112 can be equal to the spacing between the two first tie rod plates 110, so that the two first tie rod plates 110 can achieve stable clamping of the positioning blocks, and the entity part between the two positioning slots can be provided with a connection hole for the block connector 113 to pass through. More specifically, the block connector 113 can be set as a threaded fastener, such as a bolt plus a locking nut 330. Of course, the utility model is not limited to this, and can also be set as a rivet or a pin or other suitable fastener. In addition, the positioning block group on a tie rod monomer 100 includes but is not limited to one, and can be set to at least two.

[0121] In the first embodiment of the utility model, a chamfer is formed on the inner peripheral edge of the first tie rod plate body 110. The addition of the chamfer structure facilitates the installation of the positioning block and the connecting monomer 210. It should be particularly noted that the inner side of the tie rod plate body is relative to the gap between the two tie rod plate bodies, the side facing the gap is the inner side, and the side facing away from the gap is the outer side.

[0122] In the first embodiment of the utility model, the connection monomer 210 also includes a connection fastener 217 and a sleeve member 218. The sleeve member 218 is placed between the first connection plate body 211 and the second connection plate body 212. The connection fastener 217 is sequentially inserted through the first connection plate body 211, the sleeve member 218 and the second connection plate body 212 for fastening connection. That is, the connection monomer 210 is set to be detachably connected, and the addition of the sleeve member 218 can ensure the distance between the two adjacent connection plates to achieve the clamping of the first tie rod plate body 110. Specifically, when the connection unit 210 is set as a three-plate structure, the first connection plate body 211, the second connection plate body 212 and the third connection plate body 213 are all provided with mounting holes that are arranged in a mutual manner, and a sleeve member 218 that is in communication with the mounting holes is provided between the first connection plate body 211 and the second connection plate body 212, and a sleeve member 218 that is in communication with the mounting holes is provided between the second connection plate body 212 and the third connection plate body 213, and the connection fastener 217 passes through all the mounting holes and the sleeve member 218 in sequence and is fastened. More specifically, the connection fastener 217 can be set as a threaded fastener, such as a bolt plus a locking nut 330, of course, the utility model is not limited thereto, and can also be set as a suitable fastener such as a rivet or a pin.

[0123] In the first embodiment of the present invention, the length ratio of the pull rod unit 100 to the connection unit 210 can be set to 30-50, so as to minimize the number of connection units 210 and reduce the manufacturing cost. Preferably, the length ratio can be 40.

[0124] See also Figure 12 to Figure 14 In the second embodiment of the utility model, the flip connection structure 200 can also be set as a pin structure 220, at least two tie rod monomers 100 are formed with a folding accommodating space 122, the end of the rear tie rod monomer 100 can be extended into the folding accommodating space 122 of the front tie rod monomer 100 and movably hinged through the pin structure 220, and the rear tie rod monomer 100 is horizontally placed in the folding accommodating space 122 of the front tie rod monomer 100 when it is in a folded and retracted state. It should be particularly noted that in this embodiment, the structures of all tie rod monomers 100 are consistent, but the frame size needs to be set to decrease in sequence, so that the rear tie rod monomer 100 can always be flipped and folded and stored in the folding accommodating space 122 of the front tie rod monomer 100. After all tie rod monomers 100 are flipped and folded and stored, the outer contour size of the entire tie rod assembly 10 is consistent with the outer contour size of the first tie rod monomer 100, so that the storage size of the tie rod assembly 10 can be further reduced.

[0125] In the second embodiment of the utility model, the arrangement of the pin structure 220 can be that two mutually connected tie rod monomers 100 are each provided with a pin hole that can be arranged in communication with each other, and a pin connecting member is passed through all the communicating pin holes for series connection, thereby realizing a movable hinge, or one of the two mutually connected tie rod monomers 100 can be formed with a shaft mounting portion, and the other tie rod monomer 100 can be formed with a pin hole that can be fitted onto the shaft mounting portion.

[0126] In the second embodiment of the utility model, the tie rod unit 100 includes a fixing plate 121 and two second tie rod plate bodies 120. The two second tie rod plate bodies 120 are arranged relatively spaced apart. The fixing plate 121 connects the two second tie rod plate bodies 120 to enclose a folding accommodating space 122, and the ends of the two second tie rod plate bodies 120 are provided with pin holes for the pin shaft structure 220 to pass through. Specifically, the fixing plate 121 is located on one side of the two second tie rod plate bodies 120 to become the bottom side of the folding accommodating space 122. Then, the rear tie rod monomer 100 is flipped and folded to be stored in the folding accommodating space 122 of the front tie rod monomer 100. The fixing plate 121 can play a bottom side supporting role for the rear tie rod monomer 100. Since the fixing plate 121 will limit the flipping, folding and storage direction of the rear tie rod monomer 100, the rear tie rod monomer 100 can only be folded, flipped and stored from the side where the fixing plate 121 is not provided. It is not limited to that all tie rod monomers 100 have the fixing plate 121. Preferably, the first tie rod monomer 100 has the fixing plate 121, and the number of fixing plates 121 on one tie rod monomer 100 includes but is not limited to one.

[0127] Specifically, the lower end of the tie rod assembly 10 provided by the utility model can be connected to the rod end of the piston rod member arranged upwardly in the tensioning cylinder, and the upper end can be connected to the support arm 400 installed on the upper part of the tower body to achieve tension support for the tower body.

[0128] In summary, in the first and second embodiments of the tie rod assembly 10 provided by the utility model, the tie rod assembly 10 can be designed as a foldable structure, and has the advantages of simple assembly and manufacturing, and high transportation and transfer efficiency. The tie rod monomer 100 in the first embodiment adopts a double-plate structure, and the connecting monomer 210 adopts a three-plate structure, which can play a role in resisting lateral loads.

[0129] See also Fig.15 and Fig.16In the third embodiment of the utility model, at least two rod units 100 are configured as telescopic tube units 130, and are telescopically mounted in sequence from the inside to the outside, so that the rod assembly 10 can be switched between a pulled-out extended state and a retracted retracted state. The rod assembly 10 can also be configured as a multi-layer telescopic sleeve, and the rod assembly 10 can be switched between an extended state and a retracted state through the telescopic movement of the telescopic tube units 130. When the rod assembly 10 is in the retracted state, all the telescopic tube units 130 in the rod assembly 10 can be stored in the outermost telescopic tube unit 130, thereby ensuring the reliability and stability of the retracted state.

[0130] Specifically, when tension support is required between the upper section of the tower body 600 and the tower body base 610, the rod assembly 10 can be switched to a pulled-out and extended state, which means that each telescopic cylinder unit 130 in the rod assembly 10 is pulled out from the previous telescopic cylinder unit 130, and the length of the rod assembly 10 is at its maximum at this time. When the rod assembly 10 needs to be stored, the rod assembly 10 can be switched to a retracted and gathered state, which means that each telescopic cylinder unit 130 in the rod assembly 10 is retracted into the outermost telescopic cylinder unit 130, and the length of the rod assembly 10 is at its minimum at this time, which facilitates the storage and transportation of the rod assembly 10 before and after assembly.

[0131] Furthermore, the inner end of the telescopic tube monomer 130 is provided with a first joint 131 protruding on the outer circumferential wall. The first joint 131 is always placed in the outer telescopic tube monomer 130 and can abut against the outer telescopic tube monomer 130 after its own tube monomer is extended into place to avoid falling out. The outer end of the telescopic tube monomer 130 is provided with a second joint 132 protruding on the inner circumferential wall. The second joint 132 is configured to form an abutment stop for the first joint 131 on the inner telescopic tube monomer 130.

[0132] See also Figure 1 , Figure 2 and Fig.17In the embodiment of the utility model, the tower body self-supporting device also includes an auxiliary hoisting mechanism 500 provided on the balance arm 800 and used to hoist the support arm 400. The rotation radius of the lifting hook in the auxiliary hoisting mechanism 500 on the tower body is set to be not less than the distance between the hoisting center of gravity of the support arm 400 and the tower body 600. It can be understood that if the main hook on the tower crane is used to directly complete the installation of the support arm 400, it is very difficult in the actual implementation process, because the boom tower crane is limited by the minimum amplitude. After hoisting to the extreme position, the support arm 400 cannot be completely in place, and there will be a certain distance from the edge of the tower body 600 of the tower crane. This distance is very difficult to install by manual pulling, and the implementation is extremely unsafe. Therefore, by adding an auxiliary hoisting mechanism 500 to the balance arm 800 of the tower crane, the efficiency and safety of the installation of the support arm 400 can be improved.

[0133] Specifically, the auxiliary lifting mechanism 500 includes a lifting cantilever beam 510, a reel-winding and unwinding drive assembly 520 and a lifting hook assembly 530. The lifting cantilever beam 510 can be arranged on the lower side of the balance arm 800 and extended in the width direction of the balance arm 800, that is, the length direction of the lifting cantilever beam 510 is perpendicular to the length direction of the balance arm 800. The reel-winding and unwinding drive assembly 520 and the lifting hook assembly 530 are arranged on the lifting cantilever beam 510 in sequence and at intervals along the extension direction of the lifting cantilever beam 510. Specifically, the reel-winding and unwinding drive assembly 520 is located directly below the balance arm 800, and the lifting hook assembly 530 can be arranged at a position where the lifting cantilever beam 510 extends out of the balance arm 800. The reel-winding and unwinding drive assembly 520 can switch between unwinding or rewinding the lifting hook assembly 530, so that the lifting hook in the lifting hook assembly 530 can lift the support arm 400 to the installation position. In addition, the axis of the lifting hook assembly 530 is parallel to the rotation axis of the balance arm 800, the extension direction of the lifting cantilever beam 510 is perpendicular to the rotation axis of the balance arm 800, and the rotation radius of the lifting hook on the tower body 600 is set to be no less than the distance between the lifting center of gravity of the support arm 400 and the tower body 600, thereby avoiding the support arm 400 from hitting the tower body during the lifting process.

[0134] Furthermore, the reel drive assembly 520 is configured to include a reel drive motor arranged on the lifting cantilever beam 510, and a reel drum connected to the reel drive motor, and the lifting hook assembly 530 includes a fixed pulley block, a hook pulley block, a lifting hook body and a lifting rope, the fixed pulley block is installed on the lifting cantilever beam 510, and the movable pulley block is installed on the lifting hook body, one end of the lifting rope is wound around the reel drum, and the other end is successively passed around the upper end of the fixed pulley block and the lower end of the movable pulley block to be fixedly connected to the lifting cantilever beam.

[0135] In addition, the utility model also provides a tower crane, wherein the tower crane comprises the tower body self-supporting device described above. Since the tower crane adopts all the technical solutions of the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0136] In addition, the tower body self-supporting method applied to the above tower body self-supporting device includes:

[0137] Step S100, installing the support arm 400 to a preset height position;

[0138] Step S200, connecting the two ends of the pull rod assembly 10 to the driving end of the tension driving member 300 and the support arm 400 in a one-to-one correspondence;

[0139] Step S300, controlling the tensioning driving member 300 to stretch the pull rod assembly 10 with a preset pre-tensioning force;

[0140] Step S400, detecting the tensioning force when the tower crane is in working state;

[0141] Step S500: generating an over-limit instruction when the detection data of the tension force exceeds the safety threshold range.

[0142] That is, when the tower crane is in operation, the tensioning force of the tension rod tensioning mechanism is detected, and when the detection data exceeds the safety threshold range, an over-limit instruction is generated to prompt corresponding processing, thereby avoiding the phenomenon of excessive tensioning of the tension rod assembly 10 and improving the safety of the entire tower crane. Specifically, the tensioning force of the tension rod tensioning mechanism can be detected by adding a force measurement control component.

[0143] In the embodiment of the utility model, a movable rod 320 is provided in the cylinder 310 of the tension driving member 300, and both ends of the movable rod 320 are extended out of the cylinder 310, the first end of the movable rod 320 arranged upward is connected to the pull rod assembly 10, and the second end arranged downward is sleeved with a screwable locking nut 330, step S300, controlling the tension driving member 300 to stretch the pull rod assembly 10 with a preset pre-tensioning force includes:

[0144] Control the tensioning driving member 300 to stretch the pull rod assembly 10;

[0145] When the tensioning force applied by the tensioning driving member 300 to the tie rod assembly 10 reaches a preset pre-tightening force, the locking nut 330 is adjusted so that the locking nut 330 is tightened until it abuts against the cylinder body 310 .

[0146] It can be understood that by arranging the movable rod 320 in the cylinder body 310 to extend in both directions and providing a tightening nut 330 at the end away from the tie rod assembly 10, after the tensioning force applied to the tie rod assembly 10 by the tensioning drive 300 reaches the pre-tightening force, the locking nut 330 can be adjusted to abut against the cylinder body 310, so as to ensure a stable pre-tightening force while also distributing the tensioning force on the movable rod 320 to the cylinder body 310, thereby significantly reducing the size of the cylinder and achieving the purpose of reducing costs.

[0147] Step S100, before installing the support arm 400 to a preset height position, includes:

[0148] The installation height and length of the support arm 400 are determined.

[0149] Specifically, the installation height and length of the support arm 400 may be determined according to the aforementioned related calculation formulas.

[0150] More specifically, the installation height of the support arm 400 on the tower body is H=(0.5-0.6)H0, where H0 is set to the total height of the tower body. At the same time, the calculation formula of the length L0 of the support arm 400 is set to: L0+L / 2=K / (3-5), where K is set to the distance between the two diagonally arranged tensioning drive members 300, and L is set to the diagonal center distance of the tower body.

[0151] Step S100, installing the support arm 400 to a preset height position includes:

[0152] An auxiliary hoisting mechanism 500 is installed on the balance arm 800, wherein the rotation radius of the lifting hook in the auxiliary hoisting mechanism 500 on the tower body is set to be not less than the distance between the hoisting center of gravity of the support arm 400 and the tower body;

[0153] The supporting arm 400 is hoisted to a preset height position by using the auxiliary hoisting mechanism 500, and the supporting arm 400 and the tower body are connected.

[0154] It is understandable that if the installation of the support arm 400 is completed directly using the main hook on the tower crane, it will be very difficult in the actual implementation process, because the boom tower crane is limited by the minimum amplitude. After being hoisted to the extreme position, the support arm 400 cannot be completely in place and there will still be a certain distance from the edge of the tower crane's tower body 600. Therefore, by adding an auxiliary hoisting mechanism 500 to the balance arm 800 of the tower crane, the efficiency and safety of the installation of the support arm 400 can be improved.

[0155] 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. Therefore, 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, "plurality" means at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0156] 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.

[0157] 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 utility model. 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.

[0158] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A tower self-supporting device, characterized in that: The tower body self-supporting device comprises: A support arm (400) is provided on the tower body (600); A tension rod tensioning mechanism comprises a tensioning drive member (300) and a tension rod assembly (10), wherein the tensioning drive member (300) is arranged on a tower body base (610) and has a driving end, and the two ends of the tension rod assembly (10) are respectively connected to the driving end of the tensioning drive member (300) and the support arm (400) in a one-to-one correspondence; The force measurement control component comprises a force measurement sensor (341) for detecting the tensioning force of the tensioning mechanism of the pull rod.

2. The tower self-supporting device according to claim 1, characterized in that: The support arm (400) is detachably mounted on the main chord (620) of the tower body standard section and extends along the diagonal direction of the tower body standard section.

3. The tower self-supporting device according to claim 1, characterized in that: The height dimension of the support arm (400) is gradually reduced in the direction of extension outward from the tower body (600), so that the inner end of the support arm (400) can be provided with at least two first connection parts (450) that are detachably connected to the main chord (620) of the standard section of the tower body, and the outer end of the support arm (400) can be provided with at least one second connection part (460) that is connected to the pull rod assembly (10).

4. The tower self-supporting device according to claim 3, characterized in that: The support arm (400) comprises an upper connecting beam (410), a lower connecting beam (420) and a web connecting structure. The upper connecting beam (410) and the lower connecting beam (420) are arranged in sequence from top to bottom and are both extended outward from the main chord (620). The upper connecting beam (410) and the lower connecting beam (420) are gradually approached in the extension direction outward from the main chord (620). The web connecting structure connects the upper connecting beam (410) and the lower connecting beam (420). The inner ends of the upper connecting beam (410) and the lower connecting beam (420) are both provided with the first connecting portion (450).

5. The tower self-supporting device according to claim 4, characterized in that: The abdominal connection structure is configured as an abdominal rod (430) or a abdominal plate (440).

6. The tower self-supporting device according to claim 1, characterized in that: The tensioning driving member (300) is configured as a telescopic oil cylinder and comprises a cylinder body (310), a movable rod (320) and a locking nut (330); the cylinder body (310) is disposed on the tower body base (610); the movable rod (320) is movably disposed in the cylinder body (310) and both ends extend out of the cylinder body (310); the first end of the movable rod (320) disposed upward is configured as the driving end; the second end of the movable rod (320) disposed downward is configured as an externally threaded rod shaft (321); and the locking nut (330) is sleeved on the externally threaded rod shaft (321) and can be tightened until it abuts against the cylinder body (310).

7. The tower self-supporting device according to claim 6, characterized in that: The pull rod tensioning mechanism also includes at least two pull plate bodies (340) which are arranged on the tower body base (610) in sequence and at intervals around the cylinder body (310). The at least two pull plate bodies (340) are respectively connected to the cylinder body (310) and can support the first end of the moving rod (320) in the cylinder body (310) to be arranged upward. The force sensor (341) is provided on the pull plate body (340).

8. The tower self-supporting device according to any one of claims 1 to 7, characterized in that: The pull rod assembly (10) comprises a pull rod monomer (100), the number of the pull rod monomers (100) is at least two, and at least two of the pull rod monomers (100) are movably connected in sequence, so that the pull rod assembly (10) can be switched between an extended state and a retracted state.

9. The tower self-supporting device according to claim 8, characterized in that: At least two of the pull rod monomers (100) are arranged in sequence along the length direction, and any two of the pull rod monomers (100) arranged adjacent to each other are connected via a connecting monomer (210), and the two ends of the connecting monomer (210) are respectively provided with a first hinge and a second hinge, and the two adjacent pull rod monomers (100) are movably hinged to the first hinge and the second hinge in a one-to-one correspondence, so that at least two of the pull rod monomers (100) can be flipped in sequence and switched between an unfolded and extended state and a folded and retracted state, and at least two of the pull rod monomers (100) can be horizontally arranged in sequence along the height direction in the folded and retracted state; Or, at least two of the tie rod monomers (100) are arranged in sequence along the length direction, and any two of the tie rod monomers (100) arranged adjacent to each other are connected by a pin structure (220), at least two of the tie rod monomers (100) are formed with a folding accommodating space (122), and the end of the rear tie rod monomer (100) can be extended into the folding accommodating space (122) of the front tie rod monomer (100) and movably hinged by the pin structure (220), so that at least two of the tie rod monomers (100) can be flipped in sequence and can be switched between an unfolded and extended state and a folded and collapsed state, and the rear tie rod monomer (100) can be horizontally placed in the folding accommodating space (122) of the front tie rod monomer (100) when in the folded and collapsed state; Alternatively, at least two of the pull rod monomers (100) are configured as telescopic tube monomers (130), and are telescopically mounted one after another in a direction from the inside to the outside, so that the pull rod assembly (10) can be switched between a pulled-out extended state and a retracted retracted state.

10. The tower self-supporting device according to any one of claims 1 to 7, characterized in that: The tower body self-supporting device also includes an auxiliary lifting mechanism (500) arranged on the balance arm (800) and used to lift the support arm (400), and the rotation radius of the lifting hook in the auxiliary lifting mechanism (500) on the tower body is set to be no less than the distance between the lifting center of gravity of the support arm (400) and the tower body.

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