CN113734997B - Correcting device for side bending of telescopic boom and crane - Google Patents
Correcting device for side bending of telescopic boom and crane Download PDFInfo
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- CN113734997B CN113734997B CN202110939548.2A CN202110939548A CN113734997B CN 113734997 B CN113734997 B CN 113734997B CN 202110939548 A CN202110939548 A CN 202110939548A CN 113734997 B CN113734997 B CN 113734997B
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- arm
- correcting
- correction
- telescopic
- lateral bending
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Jib Cranes (AREA)
Abstract
The invention provides a correction device and method for side bending of a telescopic boom, the telescopic boom and a crane, which are applied to the telescopic boom and comprise the following steps: a correction portion installed at a junction of adjacent first and second ones of the telescopic arms, the correction portion being configured to correct a lateral bending of the telescopic arms by changing a thickness in a radial direction of the first one; wherein at least part of the first section arm is arranged in the second section arm; a fixing portion located between the correction portion and the telescopic arm, the fixing portion configured to fix the correction portion and the telescopic arm; and an adjusting portion connected to the correcting portion, the adjusting portion being configured to adjust a thickness of the correcting portion in a radial direction of the first arm according to a side bending state of the telescopic arm. The problem that can't correct the flexible arm of side bending can be solved to this application.
Description
Technical Field
The invention relates to the technical field of cranes, in particular to a correcting device for side bending of a telescopic boom and a crane.
Background
The crane is mostly used for outdoor operation, the outdoor working environment is severe and changeable, and the crane is easily damaged when facing to the influence of different wind loads, sunshine and other natural factors. When the crane lifts a heavy object, the steel wire rope wound on the pulley of the crane arm head and the central line of the crane arm have certain position offset, so that the telescopic arm of the crane can be sideways bent to different degrees in the working process under the double influences of the environment and the working state. The side bending of one section arm in the telescopic arm changes the stress state and stress points of the section arm and other section arms, so that local stress is increased, the telescopic arm is damaged, and the operation of the crane arm is unsafe. In the prior art, the side bending of the suspension arm is corrected by manually adjusting the sliding block in the suspension arm, so that the workload is high, and the repeated observation and adjustment are sometimes needed, so that the time is wasted.
Disclosure of Invention
In view of the above, the embodiments of the present invention are directed to providing a correction device for lateral bending of a telescopic boom and a crane, which can solve the problem of needing to manually correct lateral bending of the boom.
According to an aspect of the present invention, an embodiment of the present invention provides a correction device for lateral bending of a telescopic arm, which is applied to the telescopic arm, and includes: a correction portion installed at a junction of adjacent first and second ones of the telescopic arms, the correction portion being configured to correct a lateral bending of the telescopic arms by changing a thickness in a radial direction of the first one; wherein at least part of the first section arm is arranged in the second section arm; a fixing portion located between the correction portion and the telescopic arm, the fixing portion being configured to connect and fix the correction portion and the telescopic arm; and an adjusting portion connected to the correcting portion, the adjusting portion being configured to adjust a thickness of the correcting portion in a radial direction of the first arm according to a side bending state of the telescopic arm.
In one embodiment, the correction section includes: the first correcting piece is connected with the fixing part and the adjusting part, and is arranged on the first section arm or the second section arm; the second correcting piece is connected with the first correcting piece; the second correcting piece moves along the radial direction of the first arm relative to the first correcting piece under the action of the adjusting part.
In an embodiment, the correcting device for the lateral bending of the telescopic arm further comprises: the first limiting mechanism is positioned on the first correcting piece; the second limiting mechanism is positioned on the second correcting piece; the first limiting mechanism and the second limiting mechanism are mutually matched, and the first limiting mechanism and the second limiting mechanism are configured to limit the displacement of the second correcting piece relative to the first correcting piece.
In an embodiment, a side of the first correcting element, which is close to the second limiting mechanism, comprises a storage cavity; wherein, first stop gear is located the storage intracavity.
In an embodiment, the correcting device for the lateral bending of the telescopic arm further comprises: the sealing ring is arranged on one side of the first correcting piece, which is close to the second correcting piece; the sealing rib is arranged on one side, close to the first correcting piece, of the second correcting piece; wherein, the sealing ring and the sealing rib are mutually matched to form a sealing space in the storage cavity.
In an embodiment, the adjusting part includes: an input tube in communication with the storage chamber, the input tube configured to input a substance into the storage chamber to urge the second correcting member to move radially along the first arm relative to the first correcting member to increase the thickness of the correcting portion; and the output pipe is communicated with the storage cavity and is configured to output substances in the storage cavity to reduce the thickness of the correction part.
In an embodiment, the correcting device for the lateral bending of the telescopic arm further comprises: the detection assembly is mounted on the telescopic arm and is configured to detect the lateral bending amount and the lateral bending direction of the telescopic arm; the control assembly is in communication connection with the detection assembly, the control assembly is electrically connected with the adjusting part, and the control assembly is configured to control the input quantity of the input pipe and the output quantity of the output pipe according to the detection result of the detection assembly.
In an embodiment, the correcting device for the lateral bending of the telescopic arm further comprises: the buffer block is arranged on the second correcting piece and is positioned on one side, away from the first correcting piece, of the second correcting piece.
In an embodiment, the first arm is sleeved with the second arm; one side of the correcting part is fixed on the inner surface of the second section arm, and the other side of the correcting part is close to the outer surface of the first section arm; and/or one side of the correcting part is fixed on the outer surface of the first section arm, and the other side of the correcting part is close to the inner surface of the second section arm.
According to another aspect of the present application, there is provided a crane comprising: the telescopic arm comprises a first section arm and a second section arm, wherein the first section arm is sleeved in the second section arm; and the correction device for the lateral bending of the telescopic boom according to any one of the embodiments; the correcting device for the side bending of the telescopic arm is positioned at the joint of the first section arm and the second section arm.
The utility model provides a correction device and hoist of flexible arm side bend, thereby through the side bend of the thickness of adjustment portion change correction portion correction flexible arm, fixed part is used for fixing correction portion on flexible arm. The correction part is fixed through the fixing part, so that the correction part is convenient to replace and maintain. When the second arm does not have local pressure on the first arm, the correcting part reduces the gap between the outer surface of the first arm and the inner surface of the second arm by changing the thickness, and reduces the position where the second arm can generate the lateral bending, thereby reducing the possibility of generating the large lateral bending. When the second joint arm generates side bending and the second joint arm has caused partial pressure to the first joint arm, the correction part applies reaction force to the second joint arm at the position where the partial stress of the second joint arm is increased through the adjustment of the adjustment part, so that the pressure generated by the side bending is counteracted, the possibility that the second joint arm is deformed due to the partial increase of the pressure is reduced, and the possibility that the risk of the side bending of the telescopic arm is reduced.
Drawings
Fig. 1 is a perspective view of an application scenario of a correction device for lateral bending of a telescopic boom according to an exemplary embodiment of the present application.
Fig. 2 is a side view of an application scenario of a correction device for lateral bending of a telescopic boom according to an exemplary embodiment of the present application.
Fig. 3 is a schematic structural diagram of a correcting device for lateral bending of a telescopic arm according to an exemplary embodiment of the present application.
Fig. 4 is a schematic structural diagram of a first calibration member according to an exemplary embodiment of the present application.
Fig. 5 is a schematic structural diagram of a second calibration member according to an exemplary embodiment of the present application.
Fig. 6 is a top view of a correction device for lateral bending of a telescopic arm according to an exemplary embodiment of the present application.
Fig. 7 is a left side view of a correction device for lateral bending of a telescopic arm according to an exemplary embodiment of the present application.
Fig. 8 is a schematic structural diagram of a correcting device for lateral bending of a telescopic arm and the telescopic arm according to an exemplary embodiment of the present application.
Fig. 9 is an exploded view of a correction portion and a fixing portion for lateral bending of a telescopic arm according to an exemplary embodiment of the present application.
Fig. 10 is a schematic diagram of a thinnest form of a correction device for lateral bending of a telescopic boom according to an exemplary embodiment of the present application.
Fig. 11 is a cross-sectional view taken along the B-B plane of fig. 10.
Fig. 12 is a schematic view showing a partial structure at C of fig. 11.
Fig. 13 is a schematic diagram showing the thickest form of a correction device for lateral bending of a telescopic arm according to an exemplary embodiment of the present application.
Fig. 14 is a cross-sectional view of fig. 13 taken along the D-D plane.
Fig. 15 is a schematic view showing a partial structure at E of fig. 14.
Fig. 16 is a flow chart illustrating a method for correcting a lateral bending of a telescopic boom according to an exemplary embodiment of the present application.
Fig. 17 is a flowchart illustrating a method for correcting a lateral bending of a telescopic boom according to another exemplary embodiment of the present application.
Fig. 18 is a schematic diagram of a correction method for lateral bending of a telescopic arm according to an exemplary embodiment of the present application.
Fig. 19 is a schematic structural view of a telescopic arm according to an exemplary embodiment of the present application.
Fig. 20 is a cross-sectional view taken along the A-A plane of fig. 19.
Reference numerals illustrate: the correction device 1, the second joint arm 2, the first joint arm 3, the adjusting part 12, the input pipe 121, the output pipe 122, the correction part 13, the fixing part 14, the upper sliding block 15, the lower sliding block 16, the first correction piece 131, the second correction piece 132, the sealing rib 133, the first limiting mechanism 134, the sealing ring 135, the second limiting mechanism 136, the storage cavity 137 and the buffer block 138.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Furthermore, in the exemplary embodiments, since the same reference numerals denote the same components having the same structures or the same steps of the same methods, if an embodiment is exemplarily described, only structures or methods different from those of the described embodiment will be described in other exemplary embodiments.
Throughout the specification and claims, when an element is referred to as being "connected" to another element, the one element can be "directly connected" to the other element or be "electrically connected" to the other element through a third element. Furthermore, unless explicitly described to the contrary, the term "comprising" and its corresponding terms should be construed to include only the recited components and should not be construed to exclude any other components.
Fig. 1 is a perspective view of an application scenario of a correction device for lateral bending of a telescopic boom according to an exemplary embodiment of the present application, fig. 2 is a side view of an application scenario of a correction device for lateral bending of a telescopic boom according to another exemplary embodiment of the present application, fig. 3 is a schematic structural diagram of a correction device for lateral bending of a telescopic boom according to an exemplary embodiment of the present application, and as shown in fig. 1, fig. 2 and fig. 3, the correction device 1 for lateral bending of a telescopic boom is applied to a telescopic boom, and the correction device 1 for lateral bending of a telescopic boom includes: a correction portion 13, a fixing portion 14, and an adjustment portion 12, the correction portion 13 being installed at a junction of adjacent first and second joint arms 3, 2 of the telescopic arms, the correction portion 13 being configured to correct a lateral bending of the telescopic arms by changing a thickness in a radial direction of the first joint arm 3; wherein at least part of the first arm section 3 is arranged inside the second arm section 2; the fixing portion 14 is located between the correction portion 13 and the telescopic arm, the fixing portion 14 being configured to connect and fix the correction portion 13 and the telescopic arm; the adjusting portion 12 is connected to the correcting portion 13, and the adjusting portion 12 is configured to adjust the thickness of the correcting portion 13 in the radial direction of the first arm 3 according to the side bending state of the telescopic arm.
As shown in fig. 1 and 2, the correction portion 13 is installed at the junction of the adjacent first joint arm 3 and second joint arm 2 in the telescopic arm, generally on both left and right sides of the inner surface of the second joint arm 2, because the junction of the first joint arm 3 and the second joint arm 2 is an application point where bending occurs. The first section arm 3 and the second section arm 2 are connected in a matched mode through an arm pin and an arm hole. When the telescopic boom is in a normal working state and no side bending occurs, the stress of each section of the joint of the second section arm 2 and the first section arm 3 is uniform and within a safe range, and if the telescopic boom generates a certain degree of side bending in working engineering, the local stress of the second section arm 2 can be increased, so that the damage of the telescopic boom is caused, and the safety of hoisting operation is finally affected.
The correction unit 13 corrects the lateral bending of the telescopic arm by changing the thickness of the second arm 2, and the principle is that the pressure generated by the lateral bending is counteracted by applying a reaction force at the position where the local stress of the second arm 2 is increased, so that the possibility that the second arm 2 is deformed due to the local increased pressure is reduced, and the possibility that the lateral bending of the telescopic arm is dangerous is reduced.
The fixing portion 14 is used for fixing the correction portion 13 on the telescopic arm, a bolt fixing mode can be adopted between the fixing portion 14 and the telescopic arm, and the fixing portion 14 can be detached, so that the correction portion 13 can be replaced and maintained conveniently. The adjusting portion 12 is used for adjusting the thickness of the correcting portion 13, so that the correcting portion 13 generates a reaction force against the force generated by the lateral bending, thereby correcting the lateral bending of the first arm 3 relative to the second arm 2.
The correction device 1 for the lateral bending of the telescopic boom provided by the application corrects the lateral bending of the telescopic boom by changing the thickness of the correction part 13 through the adjusting part 12, and the fixing part 14 is used for fixing the correction part 13 on the telescopic boom. The correction part 13 is fixed by the fixing part 14, so that the correction part 13 is convenient to replace and repair. When the lateral bending occurs but the second arm 2 does not exert a local pressure on the first arm 3, the correction portion 13 reduces the gap between the outer surface of the first arm 3 and the inner surface of the second arm 2 by changing the thickness, and reduces the position where the second arm 2 can generate the lateral bending, thereby reducing the possibility of generating a large lateral bending. When the lateral bending occurs and the second arm segment 2 has caused partial pressure to the first arm segment 3, the correction part 13 applies a reaction force to the second arm segment 2 at the position where the partial stress of the second arm segment 2 increases by adjusting the correction part 13, so that the pressure generated by the lateral bending is counteracted, the possibility that the second arm segment 2 is subjected to partial increasing pressure to deform is reduced, and the possibility that the risk of the lateral bending of the telescopic arm is reduced.
Fig. 4 is a schematic structural view of a first calibration member according to an exemplary embodiment of the present application, fig. 5 is a schematic structural view of a second calibration member according to an exemplary embodiment of the present application, and as shown in fig. 4 and 5, the calibration part 13 may include: a first correcting member 131 and a second correcting member 132, the first correcting member 131 being connected to the fixing portion 14, the first correcting member 131 being connected to the adjusting portion 12, the first correcting member 131 being mounted on the first arm 3 or the second arm 2; the second correcting member 132 is connected to the first correcting member 131; wherein the second correcting member 132 moves radially along the first arm 3 with respect to the first correcting member 131 by the regulating portion 12.
The correcting portion 13 may include a first correcting member 131 fixed to the first arm section 3 or the second arm section 2, and a second correcting member 132 capable of relative movement. The correction portion 13 is in the thinnest shape when the distance between the second correction piece 132 and the first correction piece 131 is closest, and the correction portion 13 is in the thickest shape when the distance between the second correction piece 132 and the first correction piece 131 is farthest in the movable range. By changing the distance between the second correcting member 132 and the first correcting member 131, the thickness of the correcting portion 13 can be adjusted, so that the gap between the first arm 3 and the second arm 2 can be adjusted, and the function of adjusting the lateral bending of the telescopic arm can be achieved.
As shown in fig. 4 and 5, the correction device 1 for the sideways bending of the telescopic arm may further include: a first limiting mechanism 134 and a second limiting mechanism 136, the first limiting mechanism 134 being located on the first correcting member 131; the second limiting mechanism 136 is located on the second correcting member 132; wherein the first limiting mechanism 134 and the second limiting mechanism 136 cooperate with each other, and the first limiting mechanism 134 and the second limiting mechanism 136 are configured to limit the displacement amount of the second correcting member 132 with respect to the first correcting member 131.
The first limiting mechanism 134 and the second limiting mechanism 136 may be L-shaped buckles, and the first limiting mechanism 134 and the second limiting mechanism 136 are mutually limited by a short portion (a transverse section of the L-shape) of each L-shaped buckle, so as to limit the displacement amount of the second correcting member 132 relative to the first correcting member 131, and when the short portions of the L-shaped buckles mutually contact, the maximum displacement amount of the second correcting member 132 is reached, and at this time, the correcting portion 13 reaches the thickest form. The cooperation of the first limiting mechanism 134 and the second limiting mechanism 136 can also prevent the second correcting member 132 from falling off from the first correcting member 131, so as to ensure the connection stability of the first correcting member 131 and the second correcting member 132.
As shown in fig. 4 and 5, a side of the first correcting member 131 adjacent to the second limiting mechanism 136 may include a storage chamber 137; wherein the first stop mechanism 134 is located within the storage cavity 137.
The storage chamber 137 may be used to store hydraulic oil, and the distance between the second correcting member 132 and the first correcting member 131 is controlled by controlling the amount of hydraulic oil in the storage chamber 137, and when no hydraulic oil is present in the storage chamber 137 or the amount of hydraulic oil does not exceed the capacity of the storage chamber 137, the distance between the second correcting member 132 and the first correcting member 131 is closest, and the correcting portion 13 reaches the thinnest shape. When the amount of hydraulic oil in the storage chamber 137 exceeds the capacity of the storage chamber 137, the hydraulic oil will push the second correcting member 132 to start moving relative to the first correcting member 131, and when the amount of hydraulic oil reaches the maximum capacity of the cavity formed between the first correcting member 131 and the second correcting member 132, the correcting portion 13 reaches the thickest form.
The maximum capacity of the cavity formed between the first correcting member 131 and the second correcting member 132 is related to the length of the long portion (the vertical section of the L-shape) of the L-shaped buckle, the longer the length of the long portion of the L-shaped buckle is, the larger the displacement distance that the second correcting member 132 can generate with respect to the first correcting member 131 is, the larger the capacity of the cavity formed between the first correcting member 131 and the second correcting member 132 is, and the maximum thickness that the correcting portion 13 can reach is also related to the length of the long portion of the L-shaped buckle, and the longer the length of the long portion of the L-shaped buckle is, the thicker the maximum thickness that the correcting portion 13 can reach is.
The hydraulic oil may be replaced with other liquid, gas, or solid as long as the substance can push the second correcting member 132 to displace with respect to the first correcting member 131. Instead of hydraulically pushing the second correcting member 132, the second correcting member 132 may be pushed electrically or pneumatically.
As shown in fig. 4 and 5, the correction device 1 for the sideways bending of the telescopic arm may further include: the sealing ring 135 and the sealing rib 133, the sealing ring 135 is arranged at one side of the first correcting piece 131 close to the second correcting piece 132, and the sealing rib 133 is arranged at one side of the second correcting piece 132 close to the first correcting piece 131; wherein the sealing ring 135 and the sealing rib 133 are configured to cooperate with each other such that the storage chamber 137 forms a sealed space.
The sealing ring 135 and the sealing rib 133 cooperate to ensure that the cavity formed between the first correcting member 131 and the second correcting member 132 is a sealed space, thereby ensuring that hydraulic oil cannot leak. The width of the sealing ring 135 added with the sealing rib 133 is equal to or greater than the length of the first limiting mechanism 134 and the second limiting mechanism 136, that is, the width of the sealing ring 135 added with the sealing rib 133 needs to be equal to or greater than the length of the long part of the L-shaped buckle, so that hydraulic oil cannot leak from the joint of the first correcting member 131 and the second correcting member 132 in the displacement process of the second correcting member 132.
The first correcting member 131 and the second correcting member 132 are ensured to form a sealed space, so that the purpose of pushing the second correcting member 132 by hydraulic oil can be achieved, and the second correcting member 132 can be ensured to form a reaction force by oil pressure when being extruded by a bent knuckle arm.
Fig. 6 is a top view of a correcting device for a lateral bending of a telescopic arm according to an exemplary embodiment of the present application, and as shown in fig. 6, the adjusting portion 12 may include: an input pipe 121 and an output pipe 122, the input pipe 121 being in communication with the storage chamber 137, the input pipe 121 being configured to input a substance into the storage chamber 137 to push the second correcting member 132 to move radially along the first arm 3 with respect to the first correcting member 131 to increase the thickness of the correcting portion 13; the output pipe 122 communicates with the storage chamber 137, and the output pipe 122 is configured to output the substance in the storage chamber 137 to reduce the thickness of the correction portion 13.
The input pipe 121 and the output pipe 122 may be used to deliver and output hydraulic oil into the storage chamber 137. When hydraulic oil is supplied into the storage chamber 137, the hydraulic oil is supplied from the supply pipe 121, the discharge pipe 122 is closed, and the hydraulic oil is prevented from leaking from the discharge pipe 122, and at this time, the second correcting member 132 moves radially with respect to the first correcting member 131 in a direction away from the first arm 3, and the thickness of the correcting portion 13 increases. When the hydraulic oil is output from the storage chamber 137, the hydraulic oil is output from the output pipe 122 to close the orifice of the input pipe 121, and at this time, the second correcting member 132 moves radially with respect to the first correcting member 131 in the direction approaching the first arm 3, and the thickness of the correcting portion 13 decreases.
A hydraulic oil pressure monitoring device is installed in the storage chamber 137, and it is determined whether the correction portion 13 reaches the thickest value by detecting the oil pressure in the storage chamber 137, and when the correction portion 13 reaches the thickest position, it is detected that the oil pressure exceeds a preset maximum oil pressure, and at this time, the injection of the hydraulic oil is stopped, and the hydraulic oil amount of the cavity formed between the first correction member 131 and the second correction member 132 reaches saturation. A check valve and a relief valve can be installed on the input pipe 121 and the output pipe 122 to ensure the safety and no leakage of the oil path.
In an embodiment, the correction device 1 for the lateral bending of the telescopic arm may further include: the detection assembly is arranged on the telescopic arm and is configured to detect the side bending amount and the side bending direction of the telescopic arm; and a control assembly communicatively connected to the detection assembly, the control assembly being electrically connected to the adjustment portion 12, the control assembly being configured to control the input amount of the input pipe 121 and the output amount of the output pipe 122 according to the detection result of the detection assembly.
The detection component is used for detecting the side bending amount and the side bending direction of the telescopic boom. The detection assembly can comprise two transmitters and a receiver, wherein the two transmitters are arranged on two sides of the telescopic arm respectively, and the distance from the two transmitters to the receiver and the distance between the two transmitters are measured. And detecting the actual distance between the two transmitters and the receiver respectively during operation, comparing the actual distance with the measured distance, and obtaining the side bending quantity of the telescopic boom through calculation. The measured and actual distances can also be used to analyze the direction of the sideways bending of the telescopic boom.
The control component receives the detection result of the detection component and determines the lateral bending amount and the lateral bending direction of the telescopic arm, wherein the lateral bending direction of the telescopic arm is obtained by analyzing the lateral bending direction information detected by the detection component through the control component. The control adjusting part 12 increases or decreases the hydraulic oil according to the lateral bending amount and the lateral bending direction, thereby controlling the displacement of the second correcting member 132, and having the effect of adjusting the thickness of the correcting part 13. For example, two correction portions 13, a fixing portion 14, and an adjusting portion 12 are provided on each of the left and right sides of the junction of the first arm section 3 and the second arm section 2. When the first arm 3 is bent sideways to the left side relative to the second arm 2, the control means controls the adjusting portion 12 to inject hydraulic oil into the correction portion 13 on the left side while reducing hydraulic oil in the correction portion 13 on the right side, so that the first arm 3 is subjected to a force pushing the correction portion 13 to the right, thereby correcting to the right, and when the first arm 3 is bent sideways to the right side relative to the second arm 2, the control means controls the adjusting portion 12 to inject hydraulic oil into the correction portion 13 on the right side while reducing hydraulic oil in the correction portion 13 on the left side, so that the first arm 3 is subjected to a force pushing the correction portion 13 to the left, thereby correcting to the left.
The control component can control the increased or decreased amount of the hydraulic oil according to the lateral bending amount, so that the effect of accurate correction is achieved. The change of the hydraulic oil is automatically controlled through the lateral bending quantity and the lateral bending direction, a manual adjustment mode is replaced, real-time adjustment can be realized, adjustment is more accurate, and adjustment time is saved.
When the thickness of the correction part 13 is controlled to be changed, the same side is preferentially executed, and hydraulic oil is increased or reduced simultaneously, so that the stress of the bent joint arm is more uniform, and the damage to the bent joint arm is reduced. Further, the hydraulic oil is added or reduced at the same side of the mouth part position and the tail part position of the side bending joint arm preferentially, so that the reaction force born by the side bending joint arm is more uniform in the correction process, the possibility of concentrated stress of a single point is reduced, and the loss of the joint arm is reduced.
Fig. 7 is a left side view of a correction device for lateral bending of a telescopic arm according to an exemplary embodiment of the present application, and as shown in fig. 7, the correction device 1 for lateral bending of a telescopic arm may further include: the buffer block 138, the buffer block 138 is disposed on the second correcting member 132, the buffer block 138 is located at a side of the second correcting member 132 away from the first correcting member 131.
The buffer block 138 and the second correcting member 132 may be connected by glue, bolts or die casting, etc., so that the buffer block 138 is fixed to the second connecting member, and the buffer block 138 moves together with the second correcting member 132. The buffer block 138 can be made of nylon and has high wear resistance.
In one embodiment, the first arm section 3 is sleeved with the second arm section 2; wherein, one side of the correction part 13 is fixed on the inner surface of the second joint arm 2, and the other side of the correction part 13 is close to the outer surface of the first joint arm 3; and/or one side of the correcting part 13 is fixed on the outer surface of the first joint arm 3, and the other side of the correcting part 13 is close to the inner surface of the second joint arm 2.
The first arm 3 is sleeved in the second arm 2, and at least one part of the first arm 3 is positioned in the second arm 2. The first correcting member 131 of the correcting portion 13 may be mounted on the inner surface of the second arm segment 2 through the fixing portion 14, the second correcting member 132 may be radially displaced toward the outer surface of the first arm segment 3, and the second correcting member 132 may provide a reaction force against the side bending force to the first arm segment 3 when being radially displaced toward the outer surface of the first arm segment 3. The first correcting element 131 of the correcting portion 13 may be mounted on the outer surface of the first arm 3 by the fixing portion 14, and the second correcting element 132 may be radially displaced toward the inner surface of the second arm 2. Therefore, when a plurality of joint arms exist in the telescopic arm, the correction part 13 can be installed at the front end and the rear end of each joint arm, when the joint arm is sleeved outside other joint arms, the correction part 13 is installed on the inner surface of the current joint arm, when the joint arm is sleeved in other joint arms, the correction part 13 is installed on the outer surface of the current joint arm, the effect of multi-point simultaneous correction is achieved, the correction efficiency is improved, the stress area of the bent joint arm is increased, and the loss caused by the correction of the bent joint arm is reduced.
The correcting device 1 for the side bending of the telescopic arm can comprise a first correcting part, a first fixing part, a first adjusting part, a second correcting part, a second fixing part and a second adjusting part; the first correcting part is connected with the first adjusting part, the first fixing part is positioned between the first correcting part and the telescopic arm, the first correcting part, the first fixing part and the first adjusting part are arranged on the left side of the inner surface of the second joint arm 2 or the left side of the outer surface of the first joint arm 3, and the thickness of the first correcting part is controlled to be increased when the telescopic arm bends sideways; the second correcting part is connected with the second adjusting part, the second fixing part is located between the second correcting part and the telescopic arm, the second correcting part, the second fixing part and the second adjusting part are arranged on the right side of the inner surface of the second joint arm 2 or the right side of the outer surface of the first joint arm 3, and the second adjusting part is configured to control the thickness of the second correcting part to be increased when the telescopic arm bends sideways.
One or more correction devices 1 are arranged on the left side and the right side of the joint of the first section arm 3 and the second section arm 2, and can correct left side bending or right side bending of the telescopic arm. One side of the device is provided with a plurality of correction devices 1 at the same time, so that the correction devices 1 play a role in multi-point simultaneous correction, the correction efficiency is improved, the stress area of the bent knuckle arm is increased, and the loss caused by correction of the bent knuckle arm is reduced.
Fig. 8 is a schematic structural diagram of a correcting device for lateral bending of a telescopic arm and matching with the telescopic arm according to an exemplary embodiment of the present application, as shown in fig. 8, besides installing the correcting device 1 on two sides of the telescopic arm, an upper slider 15 and a lower slider 16 may be installed on an inner surface of the second section arm 2, so as to reduce a gap between an upper portion and a lower portion at a connection position of the first section arm 3 and the second section arm 2, reduce a possibility of the first section arm 3 bending upwards or downwards, and play a role of buffering during the bending upwards or downwards.
Fig. 9 is an exploded view of a correcting portion and a fixing portion for bending a telescopic arm according to an exemplary embodiment of the present application, as shown in fig. 9, a first correcting member 131 may be in a convex shape, a fixing portion 14 may be a fixing frame, the fixing portion 14 fixes the first correcting member 131 on the telescopic arm by matching with the shape of the first correcting member 131, the fixing portion 14 is in a frame structure, a position where the fixing portion 14 matches with the first correcting member 131 is located between the first correcting member 131 and the second correcting member 132, the first correcting member 131 is fixed without affecting movement of the second correcting member 132, and a buffer block 138 is located on a side of the second correcting member 132 away from the first correcting member 131.
When the correction device 1 for bending the telescopic boom is applied to the telescopic boom for practical use, the correction device 1 can be arranged on two sides of the telescopic boom, and the number of the correction devices 1 is selected according to the inner diameter of the telescopic boom. The detection device is arranged on the telescopic boom and used for detecting the lateral bending amount and the lateral bending direction of the telescopic boom, and the injection and the output of hydraulic oil are controlled through the control device arranged on the telescopic boom. The amount of lateral bending is related to the amount of oil injected, and the direction of lateral bending is related to the selection of the correction device 1 on the different side for injection of hydraulic oil.
For example, when the first arm 3 is bent sideways to the left with respect to the second arm 2, the control means controls the adjusting portion 12 to inject hydraulic oil into the correction portion 13 on the left side while reducing hydraulic oil in the correction portion 13 on the right side, so that the first arm 3 receives a force by which the correction portion 13 pushes right, thereby correcting right, and when the first arm 3 is bent sideways to the right with respect to the second arm 2, the control means controls the adjusting portion 12 to inject hydraulic oil into the correction portion 13 on the right side while reducing hydraulic oil in the correction portion 13 on the left side, so that the first arm 3 receives a force by which the correction portion 13 pushes left, thereby correcting left. Wherein the amount of hydraulic oil injected and the amount of hydraulic oil reduced are determined according to the amount of lateral bending.
The correction device 1 has two extreme configurations in actual use, including a thinnest configuration and a thickest configuration, with the remaining configurations being varied between the thinnest configuration and the thickest configuration. Fig. 10 is a schematic view showing the thinnest shape of the correction device 1 for bending by the telescopic arm according to an exemplary embodiment of the present application, fig. 11 is a cross-sectional view along the B-B plane in fig. 10, fig. 12 is a schematic view showing a partial structure at the C position in fig. 11, and as shown in fig. 10, fig. 11 and fig. 12, when the correction device 1 is in the thinnest shape, the first correction element 131 is completely attached to the second correction element 132, the sealing rib 133 and the sealing ring 135 cooperate to form a sealing space in the storage cavity 137, and the volume of the hydraulic oil in the thinnest shape is just the volume of the storage cavity 137. When the amount of hydraulic oil injected is larger than the capacity of the storage chamber 137, the second correcting member 132 starts to be displaced.
In one embodiment, the telescoping arm may comprise: the multiple joint arms are sleeved with each other, at least one correcting part 13, at least one fixing part 14 and at least one adjusting part 12 are arranged on the left side and the right side of the joint of each two adjacent joint arms, and the correcting method of the at least one correcting part 13, the at least one fixing part 14 and the at least one adjusting part 12 can adopt the correcting method of the lateral bending of the telescopic arm in any embodiment.
The detection assembly and the control assembly are arranged on the joint arm of one end, far away from the crane, of the telescopic arm, the control assembly is preset, the lateral bending amounts of all the joint arms are accumulated and reflected on the joint arm of one end, far away from the crane, of the telescopic arm, and the lateral bending amounts of other joint arms can be calculated through the lateral bending amounts detected by the joint arm. The preset content may include dividing the range of the lateral bending amount, setting the adjustment range of the adjusting portion 12, and the adjustment range of the adjusting portion 12 corresponds to the lateral bending amount range one by one. The adjustment ranges of the adjustment portions 12 of the same side bending amount range corresponding to different knuckle arms are different, for example, the side bending amount generated by the knuckle arm far from one end of the crane is larger than that of other knuckle arms, and therefore, the thicknesses of the knuckle arm far from one end of the crane and the correction portion 13 installed at the knuckle arm adjacent to the knuckle arm should be larger than that of other correction portions 13. When the lateral bending amount falls into one of the lateral bending amount ranges, the adjusting range of the adjusting part 12 corresponding to the lateral bending amount is adjusted, and the thicknesses of the different correcting parts 13 on each arm are directly and respectively adjusted. When the telescopic arm bends sideways, the plurality of the section arms can be quickly adjusted according to preset contents, so that the possibility of serious sideways bending of the telescopic arm is reduced. After the quick adjustment, the multiple section arms of the telescopic arm can be continuously and finely adjusted according to detection feedback of the detection assembly. The scheme of installing one detection component is to directly adjust a plurality of correction parts 13 of different section arms according to the whole side bending amount of the telescopic arm, so that the cost of installing a plurality of detection components is saved.
The detecting components can be arranged on a plurality of section arms of the telescopic arm, and at least one correcting part 13, at least one fixing part 14 and at least one adjusting part 12 are arranged on the left side and the right side of the joint of every two adjacent section arms. Each detection component detects the lateral bending amount of each joint arm individually, one or more correction parts 13 corresponding to the joint arm correct the joint arm by referring to the lateral bending amount of the joint arm, and the correction of each joint arm is independent. The method for installing the plurality of detection assemblies is to independently adjust each joint arm according to the side bending amount generated by each joint arm, so that a more accurate correction effect can be achieved.
Fig. 13 is a schematic diagram showing the thickest shape of a correction device 1 for bending a telescopic arm according to an exemplary embodiment of the present application, fig. 14 is a cross-sectional view along D-D of fig. 13, fig. 15 is a schematic diagram showing a partial structure at E of fig. 14, and fig. 13, fig. 14 and fig. 15 show that when the correction device 1 is in the thickest shape, a distance between a first correction member 131 and a second correction member 132 is completely maximized, and a sealing space is formed in a storage cavity 137 by cooperation of a sealing rib 133 and a sealing ring 135. In the thickest form, the capacity of the cavity formed between the first correcting member 131 and the second correcting member 132 is larger than the capacity of the storage cavity 137, and the capacity of the cavity at this time is related to the limit length of the first limiting mechanism 134 and the second limiting mechanism 136, and the larger the distance the second correcting member 132 can be displaced, the larger the capacity of the cavity formed between the first correcting member 131 and the second correcting member 132. During the displacement of the second correcting member 132, the cooperation of the sealing rib 133 and the sealing ring 135 enables the cavity formed between the first correcting member 131 and the second correcting member 132 to always form a sealing space. The buffer block 138 moves with the movement of the second correcting member 132.
Fig. 16 is a schematic flow chart of a method for correcting a lateral bending of a telescopic boom according to an exemplary embodiment of the present application, as shown in fig. 16, the method for correcting a lateral bending of a telescopic boom is applied to a telescopic boom, the telescopic boom includes a correction device, wherein the correction device includes a correction portion, the correction portion is installed at a connection portion between a first arm and a second arm adjacent to each other in the telescopic boom, and the correction portion is configured to correct the lateral bending of the telescopic boom by changing a thickness along a radial direction of the first arm; wherein at least part of the first arm is arranged in the second arm; the fixing part is positioned between the correcting part and the telescopic arm and is configured to fix the correcting part and the telescopic arm; and an adjusting portion connected to the correcting portion, the adjusting portion being configured to adjust a thickness of the correcting portion in a radial direction of the first arm according to a side-bending state of the telescopic arm, the correcting method of the side-bending of the telescopic arm including:
step 110: and detecting the side bending direction and the side bending amount of the first arm.
The sideways bending state of the telescopic boom can be detected by installing two transmitters and a receiving tower, the two transmitters are arranged on two sides of the telescopic boom, and the distance from the two transmitters to the receiving tower and the distance between the two transmitters are measured. The method comprises the steps of detecting the actual distance between two transmitters and a receiving tower respectively during operation, comparing the actual distance with the measured distance, obtaining the lateral bending quantity of the telescopic boom through calculation, and determining the lateral bending direction according to the distance, so as to obtain the lateral bending quantity and the lateral bending direction of the telescopic boom.
Step 120: the thickness of the correction portion is adjusted according to the lateral bending direction and the lateral bending amount.
After the control component receives the detection result of the detection component and determines the lateral bending amount and the lateral bending direction of the telescopic boom, the control component controls the adjusting part to increase or decrease hydraulic oil through the lateral bending amount and the lateral bending direction, so that the displacement of the second correcting part is controlled, and the effect of adjusting the thickness of the correcting part is achieved. For example, two correction parts, a fixing part and an adjusting part are respectively arranged on the left side and the right side of the joint of the first joint arm and the second joint arm. When the first arm is bent sideways to the left side relative to the second arm, the control component controls the adjusting part to inject hydraulic oil into the left correcting part, meanwhile reduces hydraulic oil in the right correcting part, so that the first arm is subjected to the force of the correcting part pushing to the right, and is corrected to the right.
Fig. 17 is a schematic flow chart of a method for correcting a lateral bending of a telescopic boom according to another exemplary embodiment of the present application, as shown in fig. 17, where the method for correcting a lateral bending of a telescopic boom is applied to a telescopic boom, and the telescopic boom includes a correction device, and the correction device includes a first correction portion, a first fixing portion, a first adjusting portion, a second correction portion, a second fixing portion, and a second adjusting portion; the first correcting part is connected with the first adjusting part, the first fixing part is positioned between the first correcting part and the telescopic arm, the second correcting part is connected with the second adjusting part, and the second fixing part is positioned between the second correcting part and the telescopic arm; the first correcting part, the first fixing part and the first adjusting part are arranged on the left side of the inner surface of the second joint arm or the left side of the outer surface of the first joint arm, and the second correcting part, the second fixing part and the second adjusting part are arranged on the right side of the inner surface of the second joint arm or the right side of the outer surface of the first joint arm; the step 120 may include:
Step 121: when the lateral bending direction is left, the first adjusting part controls the thickness of the first correcting part to be increased according to the lateral bending amount.
Step 122: the first adjusting portion controls the thickness reduction of the second correcting portion according to the amount of lateral bending.
Step 123: when the lateral bending direction is right, the second adjusting part controls the thickness of the second correcting part to be increased according to the lateral bending amount.
Step 124: the second adjusting portion controls the thickness reduction of the first correcting portion according to the amount of lateral bending.
When the first arm bends to the left relative to the second arm, the step 121 and the step 122 may be performed simultaneously, or only the step 121 or the step 122 may be performed; when the first level turns right relative to the second arm, the step 123 and the step 124 may be performed simultaneously, or only the step 123 or the step 124 may be performed.
When the first arm bends to the left side relative to the second arm, the control component controls the adjusting part to inject hydraulic oil into the left correcting part, and meanwhile, the hydraulic oil in the right correcting part can be selectively reduced, the gap between the first arm and the left side of the second arm is reduced, and the first arm is subjected to the force of the correcting part pushing to the right, so that the right correction is performed. When the first arm is bent sideways to the right side relative to the second arm, the control component controls the adjusting part to inject hydraulic oil into the right correction part, so that the gap between the first arm and the right side of the second arm is reduced, and meanwhile, the hydraulic oil in the left correction part is selectively reduced, so that the first arm is subjected to the force of the correction part pushing leftwards, and the left correction is performed.
Fig. 18 is a schematic diagram of a correction method for lateral bending of a telescopic boom according to an exemplary embodiment of the present application, as shown in fig. 16, when the correction of lateral bending of the telescopic boom is started, the control component receives the lateral bending amount and the lateral bending direction information (step 50), where the lateral bending amount and the lateral bending direction information are detected by the detection component. The control module determines whether left or right side bending is performed according to the amount of side bending and the side bending direction information detected by the detection module (step 51). When it is determined that the telescopic boom is bent left, hydraulic oil is injected into the correction portion on the left side of the telescopic boom while hydraulic oil in the correction portion on the right side is reduced (step 52), and the bent left of the telescopic boom is corrected. When it is determined that the telescopic boom is bent right, hydraulic oil is injected into the correction portion on the right side of the telescopic boom while hydraulic oil in the correction portion on the left side is reduced (step 53), and the bent right of the telescopic boom is corrected. After the correction in step 52 or step 53, it is monitored again whether the amount of lateral bending meets a predetermined requirement (step 54), where the predetermined requirement refers to a safety range of the amount of lateral bending preset by the user, and lateral bending within a certain range can be regarded as a safety state, and the correction is terminated without performing the correction again. When the amount of lateral bending exceeds a predetermined safety range, that is, when the predetermined requirement is not satisfied, it is necessary to judge whether the telescopic boom is bent sideways left or right again and continue the correction.
Fig. 19 is a schematic structural view of a telescopic arm according to an exemplary embodiment of the present application, and fig. 20 is a cross-sectional view taken along A-A of fig. 19, and as shown in fig. 19 and 20, the telescopic arm includes: the first arm section 3 and the second arm section 2, wherein the first arm section 3 is sleeved in the second arm section 2; and a correction device 1 for lateral bending of the telescopic boom according to any of the embodiments described above; wherein, the correction device of the side bending of the telescopic boom is positioned at the joint of the first section arm 3 and the second section arm 2.
In one embodiment, the telescoping arm may comprise: the telescopic boom comprises a plurality of knuckle arms, wherein every two adjacent knuckle arms are sleeved with each other, at least one correcting device can be arranged on the left side and the right side of the joint of every two adjacent knuckle arms, each correcting device can adopt the correcting device for the lateral bending of the telescopic boom in any embodiment, and the correcting method of each correcting device can adopt the correcting method for the lateral bending of the telescopic boom in any embodiment.
The correction device of telescopic boom that this application provided includes: a correction portion 13, and upper and lower sliders 15 and 16, correcting the lateral bending of the telescopic arm by changing the thickness of the correction portion 13 by the adjustment portion 12, and a fixing portion 14 for fixing the correction portion 13 to the telescopic arm. The correction part 13 is fixed by the fixing part 14, so that the correction part 13 is convenient to replace and repair. When the lateral bending occurs but the second arm 2 does not exert a local pressure on the first arm 3, the correction portion 13 reduces the gap between the outer surface of the first arm 3 and the inner surface of the second arm 2 by changing the thickness, and reduces the position where the second arm 2 can generate the lateral bending, thereby reducing the possibility of generating a large lateral bending. When the lateral bending occurs and the second arm segment 2 has caused partial pressure to the first arm segment 3, the correction part 13 applies a reaction force to the second arm segment 2 at the position where the partial stress of the second arm segment 2 increases by adjusting the correction part 13, so that the pressure generated by the lateral bending is counteracted, the possibility that the second arm segment 2 is subjected to partial increasing pressure to deform is reduced, and the possibility that the risk of the lateral bending of the telescopic arm is reduced. The upper slider 15 and the lower slider 16 are used for reducing the gap between the upper part and the lower part of the joint of the first arm 3 and the second arm 2, reducing the possibility of the first arm 3 bending upwards or downwards, and playing a role of buffering when bending upwards or downwards.
The application also provides a crane, comprising: a telescopic boom and a correction device for sideways bending of the telescopic boom according to any of the embodiments described above; the telescopic arm comprises a first section arm and a second section arm, and the first section arm is sleeved in the second section arm; the correcting device for the side bending of the telescopic arm is positioned at the joint of the first section arm and the second section arm.
The crane provided by the application carries out the detection of the lateral bending quantity and the lateral bending direction of the telescopic boom through installing the correction device of the lateral bending of the telescopic boom in any embodiment, and corrects the lateral bent telescopic boom according to the lateral bending quantity and the lateral bending direction.
The crane provided by the application can further comprise: the telescopic boom comprises a plurality of knuckle arms, wherein every two adjacent knuckle arms are sleeved with each other, at least one correcting device can be arranged on the left side and the right side of the joint of every two adjacent knuckle arms, each correcting device can adopt the correcting device for the lateral bending of the telescopic boom in any embodiment, and the correcting method of each correcting device can adopt the correcting method for the lateral bending of the telescopic boom in any embodiment.
The application provides a hoist, the left side and the right side at the first festival arm of the flexible arm of hoist and second festival arm junction respectively are equipped with the correction device that two flexible arms are side curved, and correction device includes correction portion, fixed part and adjustment portion. When the first arm is bent sideways to the left side relative to the second arm, the control component controls the adjusting part to inject hydraulic oil into the left correcting part, meanwhile reduces hydraulic oil in the right correcting part, so that the first arm is subjected to the force of the correcting part pushing to the right, and is corrected to the right. Wherein the injection amount or the reduction amount of the hydraulic oil is related to the lateral bending amount of the telescopic boom.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is to be construed as including any modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (7)
1. The utility model provides a correction device of flexible arm side bend, is applied to flexible arm, its characterized in that includes:
a correction portion installed at a junction of adjacent first and second ones of the telescopic arms, the correction portion being configured to correct a lateral bending of the telescopic arms by changing a thickness in a radial direction of the first one; wherein at least part of the first section arm is arranged in the second section arm;
a fixing portion located between the correction portion and the telescopic arm, the fixing portion being configured to connect and fix the correction portion and the telescopic arm;
an adjusting portion connected to the correcting portion, the adjusting portion being configured to adjust a thickness of the correcting portion in a radial direction of the first arm according to a side-bent state of the telescopic arm;
the correction part comprises a first correction piece and a second correction piece; the first correcting piece is connected with the fixing part, the first correcting piece is connected with the adjusting part, the first correcting piece is arranged on the first section arm or the second section arm, and the second correcting piece is connected with the first correcting piece;
The first limiting mechanism is positioned on the first correcting piece;
the second limiting mechanism is positioned on the second correcting piece; wherein the first limit mechanism and the second limit mechanism are mutually matched, and the first limit mechanism and the second limit mechanism are configured to limit the displacement of the second correction piece relative to the first correction piece;
one side of the first correcting piece, which is close to the second limiting mechanism, comprises a storage cavity; wherein the first limiting mechanism is positioned in the storage cavity;
the adjusting section includes:
an input tube in communication with the storage chamber, the input tube configured to input a substance into the storage chamber to urge the second correcting member to move radially along the first arm relative to the first correcting member to increase the thickness of the correcting portion;
and the output pipe is communicated with the storage cavity and is configured to output substances in the storage cavity to reduce the thickness of the correction part.
2. The correction device for sideways bending of a telescopic arm according to claim 1, wherein the second correction member moves radially along the first arm with respect to the first correction member by the adjusting portion.
3. The telescopic boom sideways correction device according to claim 1, further comprising:
the sealing ring is arranged on one side of the first correcting piece, which is close to the second correcting piece;
the sealing rib is arranged on one side, close to the first correcting piece, of the second correcting piece;
wherein, the sealing ring and the sealing rib are mutually matched to form a sealing space in the storage cavity.
4. The telescopic boom sideways correction device according to claim 1, further comprising:
the detection assembly is mounted on the telescopic arm and is configured to detect the lateral bending amount and the lateral bending direction of the telescopic arm;
the control assembly is in communication connection with the detection assembly, the control assembly is electrically connected with the adjusting part, and the control assembly is configured to control the input quantity of the input pipe and the output quantity of the output pipe according to the detection result of the detection assembly.
5. The telescopic boom sideways correction device according to claim 1, further comprising: the buffer block is arranged on the second correcting piece and is positioned on one side, away from the first correcting piece, of the second correcting piece.
6. The correction device for lateral bending of a telescopic arm according to claim 1, wherein the first arm is sleeved with the second arm;
one side of the correcting part is fixed on the inner surface of the second section arm, and the other side of the correcting part is close to the outer surface of the first section arm; and/or
One side of the correcting part is fixed on the outer surface of the first section arm, and the other side of the correcting part is close to the inner surface of the second section arm.
7. A crane, comprising:
the telescopic arm comprises a first section arm and a second section arm, wherein the first section arm is sleeved in the second section arm; and
correction device for lateral bending of telescopic arms according to any of the previous claims 1-6; the correcting device for the side bending of the telescopic arm is positioned at the joint of the first section arm and the second section arm.
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| CN202110939548.2A CN113734997B (en) | 2021-08-16 | 2021-08-16 | Correcting device for side bending of telescopic boom and crane |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110939548.2A CN113734997B (en) | 2021-08-16 | 2021-08-16 | Correcting device for side bending of telescopic boom and crane |
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| CN113734997B true CN113734997B (en) | 2023-08-08 |
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| JP2012001321A (en) * | 2010-06-17 | 2012-01-05 | Kobe Steel Ltd | Telescopic boom |
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| CN110255379A (en) * | 2019-05-30 | 2019-09-20 | 中联重科股份有限公司 | Side sway detection method, system and the side sway monitoring system of boom |
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| CA2529415A1 (en) * | 2005-02-10 | 2006-08-10 | Grove U.S. Llc | Self-adjusting slide block for telescopic crane jibs |
| CN201284196Y (en) * | 2008-09-02 | 2009-08-05 | 湖南三一起重机械有限公司 | Telescopic arm guide means and crane telescopic arm |
| JP2012001321A (en) * | 2010-06-17 | 2012-01-05 | Kobe Steel Ltd | Telescopic boom |
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