Self-adjusting wall-attached rod of tower crane

Abstract

The present application relates to tower crane device technical field, specifically to a kind of self-regulating tower crane wall-attached rod.A kind of self-regulating tower crane wall-attached rod includes connecting pipe, two adjusting rods and two connecting mechanisms.Each connecting mechanism includes outer sleeve, inner sleeve and disc spring. When inner sleeve and outer sleeve are close to each other, disc spring is compressed. Disc spring makes two adjusting rods have the tendency to move to the middle of connecting pipe, thereby providing initial pre-tightening force for adjusting rod. When tower body produces lateral displacement due to wind load or hoisting effect, the cushioning effect of disc spring enables adjusting rod to move adaptively, thereby dissipating external stress, providing protection for adjusting rod and connecting pipe, and significantly prolonging its service life. The present application provides a kind of self-regulating tower crane wall-attached rod to solve the problem that existing wall-attached rod cannot effectively adapt to working condition changes due to fixed length, which makes it prone to overload damage.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of tower crane devices, in particular to a self-adjusting tower crane wall-attached rod. BACKGROUND

[0002] The tower crane wall-attached rod is a key safety auxiliary component of the tower crane, and its essence is a set of rigid support rods connected between the tower body of the tower crane and the main structure of the building. In the construction of high-rise buildings, when the free end of the tower crane exceeds the design limit of its independent type, the stability and rigidity of the tower body will significantly decrease, and there is a risk of overturning. The core role of the wall-attached rod is to solve this problem: it forms a stable triangular or spatial support system by forcibly connecting the tower body with the solid building structure (such as the core tube, floor beam, etc.), thereby significantly reducing the slenderness ratio of the tower body, effectively transferring the horizontal loads such as wind load, torque and unbalanced bending moment borne by the tower crane to the building structure, and enhancing the overall rigidity and anti-overturning ability of the tower crane to ensure its safety and stability during over-height operation.

[0003] The patent application with publication number CN103979437A provides a tower crane wall-attached rod device, which adopts the mode of fixedly connecting an ear plate to a steel pipe cylinder and then fixedly connecting the wall-attached rod to the ear plate through a connecting plate to realize reliable attachment of the rod to the cylindrical structure. However, since the length of the wall-attached rod is fixed, it needs to be accurately measured and calculated during installation, and once the building structure undergoes slight deformation or settlement during the construction process, the rod may bear unpredictable additional stress, the rod is prone to damage, and there is a safety hazard. SUMMARY

[0004] The present application provides a self-adjusting tower crane wall-attached rod to solve the problem that the existing wall-attached rod is prone to overload damage due to the fixed length and the inability to effectively adapt to changes in working conditions.

[0005] The self-adjusting tower crane wall-attached rod of the present application adopts the following technical solution: a self-adjusting tower crane wall-attached rod includes a connecting pipe, two adjusting rods, two connecting mechanisms and two adjusting mechanisms. The two adjusting rods are located at the two ends of the connecting pipe, and one end of each adjusting rod extends into the connecting pipe.

[0006] The two connecting mechanisms are respectively at the two ends of the connecting pipe, and each connecting mechanism includes an outer sleeve pipe, an inner sleeve pipe, a disc spring, a first transmission assembly and a second transmission assembly. The outer sleeve pipe and the inner sleeve pipe are coaxially arranged with the connecting pipe and located inside the connecting pipe, and are sleeved on the adjusting rod. The outer sleeve pipe and the inner sleeve pipe can rotate and slide along the axial direction of the connecting pipe. The inner sleeve pipe is located on the side of the outer sleeve pipe close to the middle of the connecting pipe. The disc spring is between the outer sleeve pipe and the inner sleeve pipe.

[0007] The connecting mechanism has a first working stage and a second working stage. In the first working stage, the inner sleeve moves away from the middle of the connecting pipe, and the outer sleeve remains stationary. When the inner sleeve moves towards the middle of the connecting pipe, the first transmission assembly drives the outer sleeve to move in the same direction as the inner sleeve and the distance between the two increases. In the second working stage, when the inner sleeve moves away from the middle of the connecting pipe, the second transmission assembly drives the outer sleeve to move in the same direction as the inner sleeve and the distance between the two decreases. When the inner sleeve moves towards the middle of the connecting pipe, the outer sleeve remains stationary.

[0008] The adjusting mechanism controls the cooperation of the first transmission assembly or the second transmission assembly with the outer sleeve to realize the mutual conversion of the first working stage and the second working stage.

[0009] Further, a first threaded groove is formed on the outer wall of the outer sleeve and is threadedly connected with the connecting pipe. A second threaded groove is formed on the inner wall of the inner sleeve and is threadedly connected with the adjusting rod, and the pitch of the second threaded groove is greater than that of the first threaded groove.

[0010] The rotation directions of the first threaded groove and the second threaded groove are configured such that when the inner sleeve and the outer sleeve rotate in the forward direction, they both move towards the end of the connecting pipe, and when they rotate in the reverse direction, they both move towards the middle of the connecting pipe.

[0011] Further, a plurality of ratchet teeth are arranged on the inner wall of the outer sleeve. The first transmission assembly and the second transmission assembly each include a sliding block, a pawl, and a spring. The sliding block is arranged on the inner sleeve in a sliding manner along the radial direction of the inner sleeve. The pawl is arranged on the sliding block in a rotating manner, and the first spring connects the sliding block and the pawl. The pawl is arranged in an inclined manner, and the inclined directions of the pawls of the first transmission assembly and the second transmission assembly are opposite. The pawl is used to engage with the ratchet teeth. The pawl on the first transmission assembly drives the outer sleeve to rotate in the reverse direction when the inner sleeve rotates in the reverse direction. The pawl on the second transmission assembly drives the outer sleeve to rotate in the forward direction when the inner sleeve rotates in the forward direction.

[0012] Further, a first oil cavity and a second oil cavity are formed in the inner sleeve. The sliding block in the first transmission assembly is arranged in the first oil cavity in a sliding manner, and the sliding block in the second transmission assembly is arranged in the second oil cavity in a sliding manner.

[0013] The inner sleeve is provided with a hydraulic cavity, a first oil path, and a second oil path. Each adjusting mechanism includes an adjusting block arranged in the hydraulic cavity in a sliding manner along the axial direction of the inner sleeve, and the adjusting block divides the hydraulic cavity into a third oil cavity and a fourth oil cavity. The first oil path connects the first oil cavity and the fourth oil cavity, and the second oil path connects the second oil cavity and the third oil cavity.

[0014] When the adjusting block moves towards the outer sleeve, the space of the fourth oil cavity increases, which drives the sliding block in the first transmission assembly to move towards the axis of the inner sleeve, and then the pawl and the ratchet tooth in the first transmission assembly disengage. The space of the third oil cavity decreases, which drives the sliding block in the second transmission assembly to move away from the axis of the inner sleeve, and then the pawl and the ratchet tooth in the second transmission assembly engage.

[0015] Further, each adjusting mechanism further comprises a first limiting ring and a second limiting ring, both of which are fixedly arranged on the adjusting rod and coaxially arranged with the adjusting rod. The first limiting ring and the second limiting ring are sequentially distributed along the direction from the end of the connecting pipe to the middle of the connecting pipe.

[0016] The adjusting block is fixedly arranged with a first connecting rod and a second connecting rod on both sides of the axis of the inner sleeve, the first connecting rod is used for abutting against the first limiting ring, and the second connecting rod is used for abutting against the second limiting ring.

[0017] Further, the outer sleeve and the inner sleeve are both provided with a clean oil cavity and a contaminated oil cavity, and a filter membrane is arranged between the clean oil cavity and the contaminated oil cavity.

[0018] The side of the outer sleeve in contact with the connecting pipe is provided with a first oil storage groove, and the first oil storage groove is in communication with the first threaded groove. The second oil storage groove is formed between the outer sleeve and the adjusting rod. The clean oil cavity in the outer sleeve is in communication with the first oil storage groove and the second oil storage groove, and the contaminated oil cavity in the outer sleeve is in communication with the first oil storage groove and the second oil storage groove.

[0019] The side of the inner sleeve in contact with the connecting pipe is provided with a third oil storage groove. The side of the inner sleeve close to the adjusting rod is provided with a fourth oil storage groove, and the fourth oil storage groove is in communication with the second threaded groove. The clean oil cavity in the inner sleeve is in communication with the third oil storage groove and the fourth oil storage groove, and the contaminated oil cavity in the inner sleeve is in communication with the third oil storage groove and the fourth oil storage groove.

[0020] Further, each clean oil cavity is provided with an oil outlet check valve, and the oil outlet check valve allows the hydraulic oil in the clean oil cavity to flow outwards. Each contaminated oil cavity is provided with an oil return check valve, and the oil return check valve allows the hydraulic oil from the outside to flow into the contaminated oil cavity.

[0021] Further, each connecting mechanism further comprises two lubricating assemblies, and the two lubricating assemblies are respectively arranged in the inner sleeve and the outer sleeve. Each lubricating assembly comprises a sliding ring and a second spring. The sliding ring is arranged along the axis of the connecting pipe, and one side of the sliding ring is arranged in the clean oil cavity along the axis of the connecting pipe, and the other side abuts against the disc spring. The second spring in the inner sleeve connects the sliding ring and the inner sleeve, and the second spring in the outer sleeve connects the sliding ring and the outer sleeve.

[0022] Further, the outer sleeve is provided with a worm wheel fixed on the outer peripheral wall of the inner sleeve. Each connecting mechanism further comprises a driving assembly, which comprises a mounting box and a worm. The mounting box is slidably arranged on the connecting pipe along the axial direction of the connecting pipe. The worm is rotatably arranged in the mounting box, and the worm is arranged along the tangential direction of the inner sleeve and is engaged with the worm wheel.

[0023] Further, the outer sleeve is provided with a first annular groove near one end of the inner sleeve, and the inner sleeve is provided with a second annular groove near one end of the outer sleeve. One end of the outer sleeve is slidably arranged in the second annular groove. The first annular groove and the second annular groove are in communication, one end of the disc spring is in the first annular groove, and the other end of the disc spring is in the second annular groove.

[0024] The self-adjusting tower crane wall-attached rod provided by the present application has the following beneficial effects: when the inner sleeve and the outer sleeve are close to each other, the disc spring is compressed through the connecting mechanism. The disc spring makes the two adjusting rods have a tendency to move to the middle part of the connecting pipe, thereby providing initial pre-tightening force for the adjusting rods. When the tower body is laterally displaced due to wind load or lifting action, the buffering effect of the disc spring enables the adjusting rods to move adaptively, thereby dissipating external stress, protecting the adjusting rods and the connecting pipe, and significantly prolonging the service life. More importantly, this automatic compensation mechanism fundamentally avoids deformation accumulation and eliminates the need for manual readjustment, thereby improving daily work efficiency and reducing long-term maintenance costs and safety risks.

[0025] When the connecting mechanism is in the first working stage, the outer sleeve continuously moves towards the middle part of the connecting pipe, which causes the initial positions of the outer sleeve and the inner sleeve to change continuously. When the connecting mechanism is in the second working stage, the outer sleeve continuously moves away from the middle part of the connecting pipe. During the process of continuously converting the first working stage and the second working stage of the connecting mechanism by the adjusting mechanism, the initial positions of the outer sleeve and the inner sleeve change periodically, and the contact stress area between the inner sleeve and the adjusting rods is actively and orderly transferred. This mechanism fundamentally avoids the generation of local "peak wear", ensures uniform wear of the connecting pipe and the adjusting rods throughout the cycle and the whole stroke, thereby maximizing the comprehensive service life and bringing considerable economic and safety improvements. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0027] Figure 1 The structure of the self-adjusting tower crane wall-attached rod provided by the present application is shown in the structure diagram.

[0028] Figure 2 is Figure 1 enlarged view of A in the middle;

[0029] Figure 3 is an exploded view of a self-adjusting tower crane wall-attached rod provided by an embodiment of the present application;

[0030] Figure 4 is a sectional view of an outer sleeve and an inner sleeve of a self-adjusting tower crane wall-attached rod provided by an embodiment of the present application;

[0031] Figure 5 is a structural schematic view of an outer sleeve and an inner sleeve of a self-adjusting tower crane wall-attached rod provided by an embodiment of the present application;

[0032] Figure 6 is a structural schematic view of a drive assembly of a self-adjusting tower crane wall-attached rod provided by an embodiment of the present application;

[0033] Figure 7 is a side view of a self-adjusting tower crane wall-attached rod provided by an embodiment of the present application;

[0034] Figure 8 is Figure 7 a sectional view of B-B;

[0035] Figure 9 is Figure 8 an enlarged view of D in the middle;

[0036] Figure 10 is Figure 9 an enlarged view of E in the middle;

[0037] Figure 11 is Figure 7 a sectional view of C-C;

[0038] Figure 12 is Figure 11 an enlarged view of F in the middle;

[0039] Figure 13 is a sectional view of a self-adjusting tower crane wall-attached rod provided by an embodiment of the present application;

[0040] Figure 14 is Figure 13 an enlarged view of G in the middle.

[0041] In the figure: 110, connecting pipe; 112, mounting ring; 120, adjusting rod; 124, second limiting ring; 125, first limiting ring; 130, mounting box; 134, rotating handle; 140, outer sleeve; 141, clean oil cavity; 142, contaminated oil cavity; 143, oil return check valve; 144, oil outlet check valve; 145, sliding ring; 146, second spring; 148, ratchet tooth; 150, inner sleeve; 151, worm wheel; 155, worm; 159, hydraulic cavity; 1591, first oil path; 160, disc spring; 171, sliding block; 172, pawl; 173, first spring; 180, adjusting block; 190, first oil storage groove; 200, second oil storage groove; 201, third oil storage groove; 202, first ring groove; 203, second ring groove; 204, fourth oil storage groove. DETAILED DESCRIPTION

[0042] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0043] Reference Figures 1 to 14 As shown in the figure, the self-adjusting wall-attached rod for tower crane provided by the embodiments of the present application comprises a connecting pipe 110, two adjusting rods 120, two connecting mechanisms and two adjusting mechanisms. The two adjusting rods 120 are respectively located at the two ends of the connecting pipe 110, and one end of the adjusting rod 120 extends into the connecting pipe 110.

[0044] The two connecting mechanisms are respectively located at the two ends of the connecting pipe 110. Each connecting mechanism comprises an outer sleeve 140, an inner sleeve 150, a disc spring 160, a first transmission assembly and a second transmission assembly. The outer sleeve 140 and the inner sleeve 150 are coaxially arranged with the connecting pipe 110 and located in the connecting pipe 110, and are sleeved on the adjusting rod 120. The outer sleeve 140 and the inner sleeve 150 can rotate and slide along the axial direction of the connecting pipe 110. The inner sleeve 150 is located at the side of the outer sleeve 140 close to the middle part of the connecting pipe 110. The disc spring 160 is located between the outer sleeve 140 and the inner sleeve 150.

[0045] The connecting mechanism has a first working stage and a second working stage. In the first working stage, when the inner sleeve 150 moves away from the middle part of the connecting pipe 110, the outer sleeve 140 remains stationary. When the inner sleeve 150 moves towards the middle part of the connecting pipe 110, the first transmission assembly drives the outer sleeve 140 and the inner sleeve 150 to move in the same direction and the distance between them increases.

[0046] In the second working phase, the inner sleeve 150 moves away from the middle of the connecting pipe 110, and the second transmission assembly drives the outer sleeve 140 to move in the same direction as the inner sleeve 150 and reduce the distance between the two. When the inner sleeve 150 moves towards the middle of the connecting pipe 110, the outer sleeve 140 remains stationary. The adjustment mechanism controls the cooperation between the first transmission assembly or the second transmission assembly and the outer sleeve 140 to realize the mutual conversion of the first working phase and the second working phase.

[0047] When the inner sleeve 150 and the outer sleeve 140 move close to each other, the disc spring 160 is compressed. The disc spring 160 makes the two adjustment rods 120 tend to move towards the middle of the connecting pipe 110, thereby providing the adjustment rods 120 with an initial pre-tightening force. When the tower body is laterally displaced due to wind load or lifting action, the cushioning effect of the disc spring 160 enables the adjustment rods 120 to move adaptively, thereby dissipating external stress, protecting the adjustment rods 120 and the connecting pipe 110, and significantly prolonging their service life. More importantly, this automatic compensation mechanism fundamentally avoids deformation accumulation, realizes the operation of eliminating manual readjustment, improves daily work efficiency, and reduces long-term maintenance cost and safety risk.

[0048] When the connecting mechanism is in the first working phase, the outer sleeve 140 continuously moves towards the middle of the connecting pipe 110, causing the initial position of the outer sleeve 140 and the inner sleeve 150 to change constantly. When the connecting mechanism is in the second working phase, the outer sleeve 140 continuously moves away from the middle of the connecting pipe 110. During the process of the adjustment mechanism constantly converting the first working phase and the second working phase of the connecting mechanism, the initial position of the outer sleeve 140 and the inner sleeve 150 changes periodically, actively and orderly transferring the contact stress area of the inner sleeve 150 and the adjustment rods 120. This mechanism fundamentally avoids the generation of local "peak wear", ensures uniform wear of the connecting pipe 110 and the adjustment rods 120 throughout the cycle and the entire stroke, thereby maximizing their comprehensive service life and bringing considerable economic and safety improvement.

[0049] In the present embodiment, a first threaded groove is formed on the outer wall of the outer sleeve 140 and is threadedly engaged with the connecting pipe 110 through the first threaded groove. A second threaded groove is formed on the inner wall of the inner sleeve 150 and is threadedly engaged with the adjustment rod 120 through the second threaded groove, and the pitch of the second threaded groove is greater than that of the first threaded groove. The rotation directions of the first threaded groove and the second threaded groove are configured such that when the inner sleeve 150 and the outer sleeve 140 rotate in the same direction, they both move towards the end of the connecting pipe 110, and when they rotate in the opposite direction, they both move towards the middle of the connecting pipe 110.

[0050] When the inner sleeve 150 and the outer sleeve 140 rotate in the same direction, the moving speed of the inner sleeve 150 is greater than that of the outer sleeve 140 due to the second thread groove having a greater pitch than the first thread groove, and the distance between the inner sleeve 150 and the outer sleeve 140 gradually increases. When the inner sleeve 150 and the outer sleeve 140 rotate in opposite directions, the distance between the inner sleeve 150 and the outer sleeve 140 gradually decreases.

[0051] In the embodiment, the outer sleeve 140 has a plurality of ratchet teeth 148 arranged along the circumferential direction of the outer sleeve 140 and each arranged along the axial direction of the outer sleeve 140.

[0052] The first transmission assembly and the second transmission assembly each include a sliding block 171, a pawl 172, and a first spring 173. The sliding block 171 is arranged on the inner sleeve 150 to slide along the radial direction of the inner sleeve 150. The pawl 172 is arranged on the sliding block 171 to rotate, and the first spring 173 connects the sliding block 171 and the pawl 172. The pawl 172 is arranged to be inclined, and the inclining directions of the pawls 172 of the first transmission assembly and the second transmission assembly are opposite. The pawl 172 is used to engage with the ratchet teeth 148. The pawl 172 on the first transmission assembly drives the outer sleeve 140 to rotate in the opposite direction when the inner sleeve 150 rotates in the opposite direction. The pawl 172 on the second transmission assembly drives the outer sleeve 140 to rotate in the same direction when the inner sleeve 150 rotates in the same direction.

[0053] In the embodiment, the inner sleeve 150 has a first oil cavity and a second oil cavity. The sliding block 171 in the first transmission assembly is arranged in the first oil cavity to slide, and the sliding block 171 in the second transmission assembly is arranged in the second oil cavity to slide.

[0054] The inner sleeve 150 has a hydraulic cavity 159, a first oil path 1591, and a second oil path. Each adjusting mechanism includes an adjusting block 180 arranged in the hydraulic cavity 159 to slide along the axial direction of the inner sleeve 150, and the adjusting block 180 divides the hydraulic cavity 159 into a third oil cavity and a fourth oil cavity. The third oil cavity and the fourth oil cavity are arranged in sequence along the direction from the end of the connecting pipe 110 to the middle of the connecting pipe 110. The first oil path 1591 connects the first oil cavity and the fourth oil cavity, and the second oil path connects the second oil cavity and the third oil cavity.

[0055] When the adjusting block 180 moves relative to the inner sleeve 150 towards the outer sleeve 140, the space of the fourth oil cavity increases, which drives the sliding block 171 in the first transmission assembly to move close to the axis of the inner sleeve 150, and further drives the pawl 172 in the first transmission assembly to disengage from the ratchet teeth 148. The space of the third oil cavity decreases, which drives the sliding block 171 in the second transmission assembly to move away from the axis of the inner sleeve 150, and further drives the pawl 172 in the second transmission assembly to engage with the ratchet teeth 148.

[0056] In the embodiment, each adjusting mechanism further comprises a first limiting ring 125 and a second limiting ring 124, both of which are fixedly arranged on the adjusting rod 120 and coaxially arranged with the adjusting rod 120. The first limiting ring 125 and the second limiting ring 124 are sequentially arranged along the direction from the end of the connecting pipe 110 to the middle of the connecting pipe 110.

[0057] The adjusting block 180 is fixedly arranged with a first connecting rod and a second connecting rod on both sides in the axial direction of the inner sleeve 150, both of which are arranged in the axial direction of the inner sleeve 150. The first connecting rod is used to abut against the first limiting ring 125, and the second connecting rod is used to abut against the second limiting ring 124.

[0058] In the embodiment, the outer sleeve 140 and the inner sleeve 150 are both provided with clean oil cavities 141 and contaminated oil cavities 142, which are sequentially arranged along the direction gradually away from the middle of the connecting pipe 110. The clean oil cavities 141 and the contaminated oil cavities 142 are provided with filter membranes therebetween.

[0059] The side of the outer sleeve 140 in contact with the connecting pipe 110 is provided with a first oil storage groove 190, and the first oil storage groove 190 is in communication with the first threaded groove. The second oil storage groove 200 is formed between the outer sleeve 140 and the adjusting rod 120. The clean oil cavities 141 in the outer sleeve 140 are in communication with the first oil storage groove 190 and the second oil storage groove 200, and the contaminated oil cavities 142 in the outer sleeve 140 are in communication with the first oil storage groove 190 and the second oil storage groove 200.

[0060] The side of the inner sleeve 150 in contact with the connecting pipe 110 is provided with a third oil storage groove 201. The side of the inner sleeve 150 close to the adjusting rod 120 is provided with a fourth oil storage groove 204, and the fourth oil storage groove 204 is in communication with the second threaded groove. The clean oil cavities 141 in the inner sleeve 150 are in communication with the third oil storage groove 201 and the fourth oil storage groove 204, and the contaminated oil cavities 142 in the inner sleeve 150 are in communication with the third oil storage groove 201 and the fourth oil storage groove 204.

[0061] In the embodiment, two oil outlet one-way valves 144 are arranged in each clean oil cavity 141, which allow the hydraulic oil in the clean oil cavity 141 to flow outwards. The oil outlet one-way valves 144 in the outer sleeve 140 allow the hydraulic oil in the clean oil cavity 141 to flow to the first oil storage groove 190 and the second oil storage groove 200. The oil outlet one-way valves 144 of the inner sleeve 150 allow the hydraulic oil in the clean oil cavity 141 to flow to the third oil storage groove 201 and the fourth oil storage groove 204.

[0062] Two oil return check valves 143 are arranged in each contaminated oil chamber 142, and the oil return check valves 143 allow the hydraulic oil from outside to flow into the contaminated oil chamber 142. The oil return check valves 143 in the outer sleeve 140 allow the hydraulic oil in the first oil storage groove 190 and the second oil storage groove 200 to flow into the contaminated oil chamber 142, and the oil return check valves 143 in the inner sleeve 150 allow the hydraulic oil in the third oil storage groove 201 and the fourth oil storage groove 204 to flow into the contaminated oil chamber 142.

[0063] In the embodiment, each connecting mechanism further comprises two lubricating assemblies arranged in the inner sleeve 150 and the outer sleeve 140 respectively. Each lubricating assembly comprises a sliding ring 145 and a second spring 146. The sliding ring 145 is arranged along the axial direction of the connecting pipe 110, and one side of the sliding ring 145 along the axial direction of the connecting pipe 110 is arranged in the clean oil chamber 141, and the other side of the sliding ring 145 abuts against the disc spring 160. The second spring 146 in the inner sleeve 150 connects the sliding ring 145 and the inner sleeve 150, and the second spring 146 in the outer sleeve 140 connects the sliding ring 145 and the outer sleeve 140. During the process that the outer sleeve 140 and the inner sleeve 150 approach each other, the disc spring 160 is compressed, and the disc spring 160 pushes the two sliding rings 145 to move towards the clean oil chamber 141, so that the hydraulic oil in the clean oil chamber 141 is pushed outwards. During the process that the outer sleeve 140 and the inner sleeve 150 move away from each other, the second spring 146 pushes the two sliding rings 145 to move away from the clean oil chamber 141.

[0064] In the embodiment, the outer peripheral wall of the inner sleeve 150 is fixedly provided with a worm wheel 151, and the worm wheel 151 is coaxially arranged with the inner sleeve 150. Each connecting mechanism further comprises a driving assembly, and the driving assembly comprises a mounting box 130 and a worm 155. The mounting box 130 is slidably arranged on the connecting pipe 110 along the axial direction of the connecting pipe 110. The worm 155 is rotatably arranged in the mounting box 130, and the worm 155 is arranged along the tangential direction of the inner sleeve 150 and is engaged with the worm wheel 151. One end of the worm 155 is fixedly provided with a rotating handle 134, and the rotating handle 134 is arranged along the radial direction of the worm 155, so as to facilitate the rotation of the rotating handle 134. The mounting box 130 is provided with a counter, which is used to record the number of rotations of the worm 155.

[0065] In the embodiment, the outer sleeve 140 is provided with a first annular groove 202 at one end close to the inner sleeve 150, the inner sleeve 150 is provided with a second annular groove 203 at one end close to the outer sleeve 140, and one end of the outer sleeve 140 is slidably arranged in the second annular groove 203. The first annular groove 202 and the second annular groove 203 are communicated, one end of the disc spring 160 is arranged in the first annular groove 202, and the other end of the disc spring 160 is arranged in the second annular groove 203. Both ends of the connecting pipe 110 are provided with mounting rings 112, and the mounting rings 112 are threadedly connected with the connecting pipe 110, so as to limit the outer sleeve 140 and the inner sleeve 150 from being pulled out of the connecting pipe 110.

[0066] Working process: In the initial state, the disc spring 160 is in the original length.

[0067] During installation, one adjusting rod 120 is fixedly connected with the tower body, and the other adjusting rod 120 is connected with the wall. During work, the adjusting mechanism is first in the first working stage, at which time the pawl 172 in the first transmission assembly and the ratchet teeth 148 are engaged. Rotating the rotating handle 134 drives the worm 155 to rotate, and the worm 155 drives the inner sleeve 150 to rotate in the positive direction through the worm gear 151, so that the inner sleeve 150 moves away from the middle part of the connecting pipe 110, at which time the outer sleeve 140 does not rotate.

[0068] As the inner sleeve 150 and the outer sleeve 140 approach each other, the disc spring 160 is compressed. The disc spring 160 makes the two adjusting rods 120 tend to move towards the middle part of the connecting pipe 110, thereby providing the adjusting rods 120 with initial pre-tightening force.

[0069] When the tower body is laterally displaced due to wind load or lifting action, the buffering effect of the disc spring 160 enables the adjusting rods 120 to move adaptively, thereby dissipating external stress and protecting the adjusting rods 120 and the connecting pipe 110, significantly prolonging the service life thereof. More importantly, this automatic compensation mechanism fundamentally avoids deformation accumulation, realizes the operation of eliminating manual readjustment, improves the daily work efficiency, and reduces the long-term maintenance cost and safety risk.

[0070] During disassembly, the inner sleeve 150 is driven to rotate in the reverse direction by the worm gear 151. Under the action of the first transmission assembly, the inner sleeve 150 drives the outer sleeve 140 to synchronously rotate in the reverse direction. When the outer sleeve 140 rotates in the reverse direction, it moves towards the middle part of the connecting pipe 110. Since the pitch of the second threaded groove is greater than that of the first threaded groove, the movement speed of the inner sleeve 150 is greater than that of the outer sleeve 140, the distance between the two gradually increases, and until the initial position is restored, the disc spring 160 returns to the original length. At this time, the disc spring 160 has no force on the inner sleeve 150 and the outer sleeve 140, which facilitates the disassembly of the adjusting rods 120 and the connecting pipe 110.

[0071] After multiple assembly and disassembly, the outer sleeve 140 continues to move towards the middle of the connecting pipe 110, causing the initial position of the outer sleeve 140 and the inner sleeve 150 to change constantly. When the second connecting rod and the second limit ring 124 abut, the second connecting rod pushes the sliding block 171 to move relative to the inner sleeve 150, increasing the space of the fourth oil chamber, and through the first oil path 1591, the space of the first oil chamber is reduced, thereby driving the sliding block 171 in the first transmission assembly to move towards the axis of the inner sleeve 150, and the pawl 172 and the ratchet teeth 148 in the first transmission assembly disengage. At the same time, the space in the third oil chamber is reduced, and the space in the second oil chamber is increased through the second oil path, pushing the sliding block 171 in the second transmission assembly to move away from the axis of the inner sleeve 150, and the pawl 172 and the ratchet teeth 148 in the second transmission assembly engage, at which time the connecting mechanism is in the second working stage.

[0072] Subsequently, when the inner sleeve 150 rotates forward again, the outer sleeve 140 is driven to rotate forward synchronously through the second transmission assembly, and the distance between the inner sleeve 150 and the outer sleeve 140 gradually decreases. When the inner sleeve 150 rotates reversely, the outer sleeve 140 remains stationary, and the distance between the inner sleeve 150 and the outer sleeve 140 gradually increases. After multiple assembly and disassembly, the outer sleeve 140 continues to move away from the middle of the connecting pipe 110, and its initial position with the inner sleeve 150 continues to change.

[0073] When the first connecting rod and the first limit ring 125 abut, the connecting mechanism changes from the second working stage to the first working stage. The periodic change of the initial position of the outer sleeve 140 and the inner sleeve 150 actively and orderly transfers the contact stress area of the inner sleeve 150 and the adjusting rod 120. This mechanism fundamentally avoids the generation of local "peak wear", ensures the uniform wear of the connecting pipe 110 and the adjusting rod 120 throughout the cycle and the whole stroke, thereby maximizing the comprehensive service life and bringing considerable economic and safety improvement.

[0074] In the process of the outer sleeve 140 and the inner sleeve 150 approaching each other, the disc spring 160 is compressed, pushing the two sliding rings 145 to move towards the clean oil chamber 141, causing the hydraulic oil in the clean oil chamber 141 to be discharged outward, and the two second springs 146 are compressed.

[0075] The hydraulic oil in the clean oil chamber 141 of the outer sleeve 140 flows to the first oil storage groove 190 and the second oil storage groove 200 through the oil outlet check valve 144, lubricating the contact surfaces between the outer sleeve 140 and the connecting pipe 110, and the outer sleeve 140 and the adjusting rod 120. The hydraulic oil in the clean oil chamber 141 of the inner sleeve 150 flows to the third oil storage groove 201 and the fourth oil storage groove 204 through the oil outlet check valve 144, lubricating the contact surfaces between the inner sleeve 150 and the connecting pipe 110, and the outer sleeve 140 and the adjusting rod 120.

[0076] In the process of moving away from each other, the second spring 146 pushes the two sliding rings 145 to move outwards of the clean oil cavity 141, increasing the space of the clean oil cavity 141, and sucking the hydraulic oil in the contaminated oil cavity 142 into the clean oil cavity 141 through the filter membrane. The contaminated oil cavity 142 of the outer sleeve 140 sucks the hydraulic oil in the first and second oil storage grooves 190, 200, and the contaminated oil cavity 142 of the inner sleeve 150 sucks the hydraulic oil in the third and fourth oil storage grooves 201, 204.

[0077] Therefore, in the process of moving the outer sleeve 140 and the inner sleeve 150, the clean oil cavity 141 is constantly replenished with hydraulic oil, reducing the friction between the outer sleeve 140, the inner sleeve 150 and the connecting pipe 110 and the adjusting rod 120. The contaminated oil cavity 142 recovers excess hydraulic oil and enters the clean oil cavity 141 after filtering through the filter membrane, thereby reducing the possibility of the adjusting rod 120 surface sludge entering the threaded surface and improving the threaded fitting accuracy.

[0078] The wear and lubrication degree of each part of the connecting pipe 110 and the adjusting rod 120 tend to be consistent, so there is no obvious operating resistance during disassembly, which helps to improve the installation and disassembly efficiency.

[0079] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A self-adjusting tower crane wall-mounted rod, characterized in that: It includes a connecting pipe, two adjusting rods, two connecting mechanisms, and two adjusting mechanisms; the two adjusting rods are located at both ends of the connecting pipe, and one end of the adjusting rod extends into the connecting pipe; Two connecting mechanisms are located at opposite ends of the connecting pipe. Each connecting mechanism includes an outer sleeve, an inner sleeve, a disc spring, a first transmission assembly, and a second transmission assembly. The outer sleeve and the inner sleeve are coaxially arranged with the connecting pipe and located inside the connecting pipe, and are sleeved on the adjusting rod. Both the outer sleeve and the inner sleeve can rotate and slide along the axial direction of the connecting pipe. The inner sleeve is located on the side of the outer sleeve closer to the middle of the connecting pipe. The disc spring is located between the outer sleeve and the inner sleeve. The connecting mechanism has a first working stage and a second working stage. The first working stage is as follows: when the inner sleeve moves away from the center of the connecting pipe, the outer sleeve remains stationary; when the inner sleeve moves closer to the center of the connecting pipe, the first transmission component drives the outer sleeve to move in the same direction as the inner sleeve, and the distance between the two increases. The second working stage is as follows: when the inner sleeve moves away from the center of the connecting pipe, the second transmission component drives the outer sleeve to move in the same direction as the inner sleeve, and the distance between the two decreases; when the inner sleeve moves closer to the center of the connecting pipe, the outer sleeve remains stationary. The adjustment mechanism controls the cooperation between the first transmission component or the second transmission component and the outer sleeve to achieve the mutual conversion between the first working stage and the second working stage; The outer wall of the outer sleeve is provided with a first threaded groove, which engages with the connecting pipe thread; the inner wall of the inner sleeve is provided with a second threaded groove, which engages with the adjusting rod thread, and the pitch of the second threaded groove is greater than the pitch of the first threaded groove. The first and second threaded grooves are configured such that when the inner sleeve and outer sleeve rotate in the forward direction, they both move towards the end of the connecting pipe, and when they rotate in the reverse direction, they both move towards the middle of the connecting pipe.

2. The self-adjusting tower crane wall-mounted rod according to claim 1, characterized in that: Multiple ratchet teeth are provided on the inner wall of the outer sleeve; both the first transmission assembly and the second transmission assembly include a sliding block, a pawl, and a first spring; the sliding block is slidably disposed on the inner sleeve along the radial direction of the inner sleeve; the pawl is rotatably disposed on the sliding block, and the first spring connects the sliding block and the pawl; the pawl is inclined, and the pawls of the first transmission assembly and the second transmission assembly are inclined in opposite directions, and the pawl is used to mesh with the ratchet teeth; the pawl on the first transmission assembly causes the outer sleeve to rotate in the opposite direction when the inner sleeve rotates in the reverse direction; the pawl on the second transmission assembly causes the outer sleeve to rotate in the forward direction when the inner sleeve rotates in the forward direction.

3. The self-adjusting tower crane wall-mounted rod according to claim 2, characterized in that: The inner sleeve has a first oil chamber and a second oil chamber. The sliding block of the first transmission assembly is slidably disposed in the first oil chamber, and the sliding block of the second transmission assembly is slidably disposed in the second oil chamber. The inner sleeve has a hydraulic chamber, a first oil passage, and a second oil passage; each adjustment mechanism includes an adjustment block, which is slidably disposed in the hydraulic chamber along the axial direction of the inner sleeve, and the adjustment block divides the hydraulic chamber into a third oil chamber and a fourth oil chamber; the first oil passage connects the first oil chamber and the fourth oil chamber, and the second oil passage connects the second oil chamber and the third oil chamber; When the adjusting block moves towards the outer sleeve relative to the inner sleeve, the space of the fourth oil chamber increases, causing the sliding block in the first transmission assembly to move closer to the axis of the inner sleeve, thereby causing the pawl and ratchet teeth in the first transmission assembly to disengage; the space of the third oil chamber decreases, causing the sliding block in the second transmission assembly to move away from the axis of the inner sleeve, thereby causing the pawl and ratchet teeth in the second transmission assembly to engage.

4. The self-adjusting tower crane wall-mounted rod according to claim 3, characterized in that: Each adjustment mechanism also includes a first limiting ring and a second limiting ring, both of which are fixedly mounted on the adjustment rod and are coaxial with the adjustment rod; the first limiting ring and the second limiting ring are distributed sequentially along the direction from the end of the connecting pipe to the middle of the connecting pipe. The adjusting block is fixedly provided with a first connecting rod and a second connecting rod on both sides along the axial direction of the inner sleeve. The first connecting rod is used to abut against the first limiting ring, and the second connecting rod is used to abut against the second limiting ring.

5. The self-adjusting tower crane wall-mounted rod according to claim 1, characterized in that: Both the outer and inner sleeves are provided with clean oil chambers and contaminated oil chambers, and a filter membrane is installed between the clean oil chambers and the contaminated oil chambers. A first oil reservoir is provided on the side where the outer sleeve and the connecting pipe meet, and the first oil reservoir is connected to the first threaded groove; a second oil reservoir is formed between the outer sleeve and the adjusting rod; the clean oil chamber inside the outer sleeve is connected to the first oil reservoir and the second oil reservoir, and the contaminated oil chamber inside the outer sleeve is connected to the first oil reservoir and the second oil reservoir; A third oil reservoir is provided on the side of the inner sleeve that contacts the connecting pipe; a fourth oil reservoir is provided on the side of the inner sleeve near the adjusting rod, and the fourth oil reservoir is connected to the second threaded groove; the clean oil chamber inside the inner sleeve is connected to the third and fourth oil reservoirs, and the contaminated oil chamber inside the inner sleeve is connected to the third and fourth oil reservoirs.

6. A self-adjusting tower crane wall-mounted rod according to claim 5, characterized in that: Each clean oil chamber is equipped with an outflow check valve, which allows hydraulic oil in the clean oil chamber to flow outwards; each contaminated oil chamber is equipped with a return check valve, which allows external hydraulic oil to flow into the contaminated oil chamber.

7. A self-adjusting tower crane wall-mounted rod according to claim 5, characterized in that: Each connecting mechanism also includes two lubrication components, which are respectively located in the inner sleeve and the outer sleeve; each lubrication component includes a sliding ring and a second spring; the sliding ring is arranged along the axial direction of the connecting pipe, with one side of the sliding ring along the axial direction of the connecting pipe in a clean oil cavity and the other side abutting against the disc spring; the second spring in the inner sleeve connects the sliding ring and the inner sleeve, and the second spring in the outer sleeve connects the sliding ring and the outer sleeve.

8. A self-adjusting tower crane wall-mounted rod according to claim 1, characterized in that: A worm gear is fixedly installed on the outer peripheral wall of the inner sleeve, and the worm gear and the inner sleeve are coaxially arranged; each connecting mechanism also includes a drive assembly, which includes a mounting box and a worm; the mounting box is slidably installed on the connecting pipe along the axial direction; the worm is rotatably installed in the mounting box, and the worm is arranged tangentially along the inner sleeve and meshes with the worm gear.

9. A self-adjusting tower crane wall-mounted rod according to claim 1, characterized in that: The outer sleeve has a first annular groove at one end near the inner sleeve, and the inner sleeve has a second annular groove at one end near the outer sleeve. One end of the outer sleeve is slidably disposed in the second annular groove. The first annular groove and the second annular groove are connected. One end of the disc spring is located in the first annular groove, and the other end of the disc spring is located in the second annular groove.

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