Crane

Abstract

The utility model provides a crane which comprises a stand column, an arm frame and a telescopic part, one end of the telescopic part is hinged to the stand column, the other end of the telescopic part is hinged to the arm frame, and when the arm frame is located at a first limiting position, the telescopic part provides supporting force for the arm frame. One end of the telescopic piece is hinged to the stand column, and the other end of the telescopic piece is hinged to the boom, so that when the boom of the crane is lifted to the first limit position, namely the boom is located at the highest position, and when wind power is large, the boom located at the highest position possibly inclines backwards and then inclines forwards, and when the boom inclines backwards, the telescopic piece can provide supporting force for the boom; the cantilever crane is prevented from inclining backwards, and the follow-up cantilever crane is also prevented from inclining forwards, so that the cantilever crane is prevented from snapping a steel wire rope, and the safety of the crane during working is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cranes, and in particular to a crane. Background Art

[0002] In the field of cranes, especially overhead cranes, the boom is fixed by wire ropes. When in an unloaded state, the boom is easily blown backward by the wind, and then falls forward. A large impact force will be generated during the falling process, which may break the wire rope, causing a tipping accident and posing a safety hazard. Utility Model Content

[0003] In view of this, the present application provides a crane that solves the problem of potential safety hazards caused by the boom tipping accident.

[0004] In order to achieve the above objectives, this application provides the following technical solutions:

[0005] A crane, characterized by comprising:

[0006] Column;

[0007] Boom;

[0008] A telescopic member, one end of which is hinged to the column and the other end of which is hinged to the arm;

[0009] Wherein, when the arm is in the first extreme position, the telescopic member provides supporting force for the arm.

[0010] Optionally, at least two telescopic members are provided.

[0011] Optionally, at least one of the telescopic members is connected to the main beam on one side of the boom, and at least one of the telescopic members is connected to the main beam on the other side of the boom.

[0012] Optionally, when the arm is in the second extreme position, the telescopic member provides supporting force for the arm.

[0013] Optionally, the telescopic member is a variable amplitude cylinder.

[0014] Optionally, the telescopic member is a connecting rod or a cylinder.

[0015] Optionally, the telescopic member is arranged close to a hinge position between the column and the arm.

[0016] Optionally, the crane further includes a chain having one end connected to the boom and the other end connected to the column, and when the boom is in the second extreme position, the chain is in a stretched state.

[0017] Optionally, the crane further comprises a sensor connected to the boom, wherein:

[0018] The sensor sends out a first alarm when the boom is at the first extreme position;

[0019] The sensor sends out a second alarm when the boom is at a second extreme position.

[0020] Optionally, the telescopic member is arranged on the rearward side of the arm.

[0021] The crane provided in the present application is provided with a telescopic member having one end hinged to the column and the other end hinged to the boom. When the boom of the crane rises to the first extreme position, that is, when the boom is at the highest position, when the wind force is strong, the boom at the highest position may tilt backward and then forward. When the boom tilts backward, the telescopic member will provide supporting force to the boom to prevent the boom from tilting backward, thereby preventing the boom from tilting forward again, thereby preventing the boom from breaking the wire rope, and improving the safety of the crane during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0023] Figure 1 A side view of the crane provided for this embodiment;

[0024] Figure 2 This is the front view of the crane;

[0025] Figure 3 The side view shows two working states of the crane.

[0026] Figure 1-Figure 3 middle:

[0027] 1-column, 2-arm, 3-telescopic part, 4-sensor;

[0028] 21-Main beam. DETAILED DESCRIPTION

[0029] The present application provides a crane.

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0031] like Figure 1-Figure 3 As shown, an embodiment of the present application provides a crane, which mainly includes a column 1, a boom 2 and a telescopic member 3, one end of the telescopic member 3 is hinged to the column 1, and the other end of the telescopic member 3 is hinged to the boom 2, wherein: when the boom 2 is in the first extreme position, the telescopic member 3 provides support force for the boom 2.

[0032] It should be noted that the first limit position is not limited here. The first limit position can indicate that the arm 2 is in the highest position, which is the position when the angle between the arm 2 and the column 1 is the smallest, that is, Figure 3 The first limit position can also indicate that the arm 2 is in the lowest position, which is the position when the angle between the arm 2 and the column 1 is the largest, that is, Figure 3 The state shown by Y in the figure.

[0033] Specifically, when the wind is strong, when the first limit position indicates that the boom 2 is in the highest position, the telescopic member 3 is in the maximum compression state, and the boom 2 may tilt backward and then forward. When the boom 2 tilts backward, the telescopic member 3 applies a supporting force to the boom 2 to prevent the boom 2 from tilting backward. When the boom 2 tilts forward, the telescopic member 3 applies a certain tensile force to the boom 2 to prevent the boom 2 from tilting forward, to prevent the boom 2 from generating a forward pulling force, and to prevent the wire rope on the boom 2 from being broken; when the first limit position indicates that the boom 2 is in the lowest position, the boom 2 may tilt forward. At this time, the telescopic member 3 provides a certain tensile force for the boom 2, and the boom 2 will also shake due to the wind, and the telescopic frame can also provide supporting force for the boom 2.

[0034] It should be noted that the front side of the arm 2 in the forward tilt is Figure 1 The area shown in A in the middle; the rear side of the arm 2 when tilted backward is Figure 1 The area shown in B.

[0035] The crane of the above structure is provided with a telescopic member 3 which is hinged to the column 1 at one end and to the boom 2 at the other end. When the boom 2 of the crane rises to the first extreme position, that is, when the boom 2 is at the highest position, when the wind force is strong, the boom 2 at the highest position may tilt backward and then tilt forward. When the boom 2 tilts backward, the telescopic member 3 provides supporting force for the boom 2 to prevent the boom 2 from tilting backward, thereby preventing the subsequent boom 2 from tilting forward, thereby preventing the boom 2 from breaking the wire rope, thereby improving the safety of the crane during operation.

[0036] In some embodiments, at least two telescopic members 3 are provided. In this way, when the boom 2 is in the first extreme position, the supporting force provided by the telescopic member 3 to the boom 2 is more stable, thereby improving the stability of the boom 2 during operation.

[0037] Exemplarily, there may be two, three, four, five, etc. telescopic members 3 .

[0038] Furthermore, in the direction perpendicular to the boom 2, that is Figure 3 In the direction indicated by the double-headed arrow C, at least two telescopic members 3 are evenly arranged. Ensuring that the telescopic members 3 are evenly arranged can ensure that the support force of the telescopic members 3 on the boom 2 is more balanced, and further improve the stability of the boom 2 when the boom 2 is in the first extreme position.

[0039] In some embodiments, at least one telescopic member 3 is connected to the main beam 21 on one side of the boom 2, and at least one telescopic member 3 is connected to the main beam 21 on the other side of the boom 2. Specifically, taking two telescopic members 3 as an example, the main beam 21 of the boom 2 is arranged at the position of the boom 2 at the Figure 2 At the two end portions in the direction indicated by the double-headed arrow C, one telescopic member 3 is connected to the main beam 21 on one side of the boom 2, and the other telescopic member 3 is connected to the main beam 21 on the other side of the boom 2, so that the support force of the telescopic member 3 at each position of the boom 2 can be balanced, and the overall stability of the boom 2 can be improved. In addition, the main beam 21 of the boom 2 is relatively thick, so as to avoid bending of the connection position with the boom 2 when the telescopic member 3 applies force to the boom 2, thereby extending the service life of the boom 2 and further improving the stability of the connection between the telescopic member 3 and the boom 2.

[0040] In some embodiments, when the boom 2 is in the second limit position, the telescopic member 3 provides support force for the boom 2. Here, the first limit position and the second limit position are not limited, wherein the first limit position may indicate that the boom 2 is in the highest position, and the second limit position may indicate that the boom 2 is in the lowest position; the first limit position may also indicate that the boom 2 is in the lowest position, and the second limit position indicates that the boom 2 is in the highest position.

[0041] For example, Figure 2 The X in the middle indicates that the arm is in the first extreme position. Figure 2 The Y in the middle indicates that the arm is in the second extreme position.

[0042] In some embodiments, the telescopic member 3 is a luffing cylinder. Specifically, the luffing cylinder can withstand large torque and heavy load structures to meet the working requirements of the equipment during rotation; it can provide efficient energy conversion, so that the luffing cylinder has higher efficiency in rotation. The luffing cylinder can also realize energy recovery and reuse, improving the energy utilization rate of the system; the luffing cylinder adopts high-strength materials and high-quality seals to ensure its reliability and durability in harsh working environments.

[0043] In some embodiments, the telescopic member 3 is a connecting rod or a cylinder. Specifically, the connecting rod can realize motion conversion in different directions and forms; the connecting rod structure usually has high rigidity and stability, and can withstand large forces and loads, which enables the connecting rod to provide stable support and the ability to transmit force in the mechanical system, ensuring the reliability and stability of the system. The cylinder has a high power density and can generate a large force or torque output in a small space; the cylinder structure is relatively simple; compared with the hydraulic system, the pneumatic system is safer in the event of leakage; the maintenance of the cylinder is relatively simple, usually only requiring regular inspection and replacement of seals, and the maintenance cost and repair time are low.

[0044] In some embodiments, the telescopic member 3 is arranged near the hinged position of the column 1 and the boom 2. Specifically, the junction of the column 1 and the boom 2 is generally located at a lower position of the crane, so that when the telescopic member 3 between the column 1 and the boom 2 needs to be replaced after a long period of use, since the telescopic member 3 is arranged near the hinged position of the column 1 and the boom 2, the telescopic member 3 is also arranged at a relatively lower position of the crane, which can facilitate the maintenance and replacement of the telescopic member 3 and reduce the labor intensity during replacement.

[0045] It should be noted that the hinge position of the column 1 and the arm 2 refers to Figure 1 The position shown in D.

[0046] Furthermore, in some embodiments, the crane further comprises a chain (not shown in the figure) connected to the boom 2 at one end and connected to the column 1 at the other end, and when the boom 2 is in the second extreme position, the chain is in a stretched state. Specifically, on the basis of setting the telescopic member 3 between the column 1 and the boom 2, a chain is set between the column 1 and the boom 2, so that when the boom 2 is in the second extreme position, that is, when the boom 2 is in the lowest position, the chain is in a stretched state, at which time the steel wire rope, the telescopic member 3 and the chain can all provide a stretching force to the boom 2, providing multiple guarantees for the boom to maintain its current position, thereby further improving the structural stability of the boom 2 when it is operating in the second extreme position, and improving the safety performance of the crane.

[0047] Here, the number of chains is not limited, and the number of chains can be one, two, three, four, etc.

[0048] In some embodiments, the crane also includes a sensor 4 connected to the boom 2, and the sensor 4 sends out a first alarm when the boom 2 is in a first extreme position. At this time, the telescopic member 3 locks the length of the telescopic member 3 and keeps it unchanged. The telescopic member 3 plays an anti-overturning role when the boom 2 is lifted and dropped in the first extreme position; accordingly, the sensor 4 sends out a second alarm when the boom 2 is in a second extreme position. At this time, the telescopic member 3 locks the length of the telescopic member 3 and keeps it unchanged. The telescopic member 3 plays an anti-overturning role when the boom 2 is lifted and dropped in the second extreme position.

[0049] It should be noted that the first alarm and the second alarm may be the same alarm signal or different alarm signals.

[0050] In some embodiments, the telescopic member 3 is arranged on the rearward side of the arm 2. It should be noted that the rearward side of the arm 2 is Figure 1 The area shown in B in FIG. Correspondingly, the forward side of the arm 2 is Figure 1 Compared with setting the telescopic member 3 on the forward side of the boom 2 , setting the telescopic member 3 on the backward side of the boom 2 can better provide support when the boom 2 is at the highest position, further ensuring the stability of the boom 2 .

[0051] The basic principles of the present application are described above in conjunction with specific embodiments. However, it should be noted that the advantages, strengths, effects, etc. mentioned in the present application are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present application. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not for limitation, and the above details do not limit the present application to being implemented by adopting the above specific details.

[0052] The block diagrams of the devices, apparatuses, equipment, and systems involved in this application are only illustrative examples and are not intended to require or imply that they must be connected, arranged, and configured in the manner shown in the block diagram. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment, and systems can be connected, arranged, and configured in any manner. Words such as "including", "comprising", "having", etc. are open words, referring to "including but not limited to", and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them, unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to", and can be used interchangeably with them.

[0053] It should also be noted that in the apparatus, device and method of the present application, each component or each step can be decomposed and / or recombined. Such decomposition and / or recombination should be regarded as equivalent solutions of the present application.

[0054] The above description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects without departing from the scope of the present application. Therefore, the present application is not intended to be limited to the aspects shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

[0055] It should be understood that the qualifiers "first", "second", "third", "fourth", "fifth" and "sixth" used in the description of the embodiments of the present application are only used to more clearly explain the technical solutions and cannot be used to limit the scope of protection of the present application.

[0056] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize certain variations, modifications, changes, additions and sub-combinations thereof.

Claims

1. A crane, characterized in that: include: Column; Boom; A telescopic member, one end of which is hinged to the column and the other end of which is hinged to the arm; a sensor connected to the arm; Wherein, when the boom is in a first extreme position, the telescopic member provides a supporting force for the boom, the sensor issues a first alarm when the boom is in the first extreme position, and the sensor issues a second alarm when the boom is in a second extreme position.

2. The crane according to claim 1, characterized in that: At least two telescopic members are provided.

3. The crane according to claim 2, characterized in that: At least one of the telescopic members is connected to the main beam on one side of the boom, and at least one of the telescopic members is connected to the main beam on the other side of the boom.

4. The crane according to claim 1, characterized in that: When the arm is in the second extreme position, the telescopic member provides supporting force for the arm.

5. The crane according to any one of claims 1 to 4, characterized in that: The telescopic member is a luffing oil cylinder.

6. The crane according to any one of claims 1 to 4, characterized in that: The telescopic member is a connecting rod or a cylinder.

7. The crane according to claim 1, characterized in that: The telescopic member is arranged close to the hinged position of the column and the arm.

8. The crane according to claim 4, characterized in that: It also includes a chain with one end connected to the arm and the other end connected to the column, and when the arm is in the second extreme position, the chain is in a stretched state.

9. The crane according to claim 1, characterized in that: The telescopic member is arranged on the rearward side of the arm support.

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