Anti-tilting device of crane and crane

Abstract

The utility model relates to the technical field of cranes, and discloses an anti-tilting device of a crane and the crane. The anti-inclination device comprises an anti-inclination supporting rod, the first end of the anti-inclination supporting rod is hinged to an auxiliary arm of the crane, and the second end of the anti-inclination supporting rod abuts against a main arm of the crane. The first end of the connecting piece is in sliding connection with the anti-inclination supporting rod, and the second end of the connecting piece is hinged to the auxiliary arm; the heavy hammer is connected to the anti-inclination supporting rod, the horizontal plane where the heavy hammer is located is located above the horizontal plane where the first end of the anti-inclination supporting rod is located, and the gravity center of the heavy hammer relative to the first end of the anti-inclination supporting rod is located at the position close to the auxiliary arm. The crane comprises a main arm, an auxiliary arm and the anti-tilting device which are hinged with each other. According to the anti-tilting device of the crane, the connecting piece is connected with the auxiliary arm of the crane, and compared with connection with a main arm in the prior art, the size of the connecting piece can be reduced, and transition transportation is facilitated.

Description

Technical Field

[0001] This application belongs to the technical field of cranes, and specifically relates to an anti-tipping device for a crane and a crane. Background Art

[0002] The anti-back-tipping device is an important component in a crane, which is used to prevent the boom of the crane from tipping backward due to wind load during high-altitude operation or sudden unloading of the suspended load during the hoisting process. The existing anti-tipping devices for the auxiliary boom of a crane mainly include accumulator cylinders, anti-tipping rod struts, etc. Taking the patent CN202098995U - Fixed auxiliary boom anti-back-tipping device on a crane and a crane including this device as an example, as Figure 1 shown, the anti-tipping device in this utility model limits the yaw movement of the anti-tipping device through the first limit component D1 and the second limit component D2. The structure is complex, the length of the traction device D3 (i.e., the connecting piece 240 in this application) required is relatively large, and the angle relationship between the main boom and the auxiliary boom needs to be considered when designing the traction device, resulting in a relatively large design workload for different specifications of truss booms. Summary of the Invention

[0003] The purpose of this application is to provide an anti-tipping device for a crane and a crane, so as to reduce the size of the connecting piece and facilitate the transfer transportation of the anti-tipping device and the auxiliary boom.

[0004] To achieve the above purpose, on the one hand, this application provides an anti-tipping device for a crane, and the anti-tipping device includes:

[0005] An anti-tipping strut, the first end of the anti-tipping strut is hinged to the auxiliary boom of the crane, and the second end is used to abut against the main boom of the crane;

[0006] A connecting piece, the first end of the connecting piece is slidably connected to the anti-tipping strut, and the second end of the connecting piece is hinged to the auxiliary boom;

[0007] A weight, the weight is connected to the anti-tipping strut, and the horizontal plane where the weight is located is above the horizontal plane where the first end of the anti-tipping strut is located. Relative to the first end of the anti-tipping strut: the center of gravity of the weight is located at a position close to the auxiliary boom.

[0008] In some embodiments, the connecting piece is a plate-like structure or a rod-like structure.

[0009] In some embodiments, the connecting piece is a tension plate, the tension plate is provided with a tension plate waist-shaped hole arranged along the extension direction of the tension plate, and the anti-tipping strut is provided with a sliding member that slidably cooperates with the tension plate waist-shaped hole.

[0010] In some embodiments, the anti-tipping device further includes:

[0011] The weight connecting seat includes a first support rod, a second support rod, and a connecting rod with their three endpoints connected. The first support rod, the second support rod, and the anti-tilting support rod enclose a triangular support structure. One end of the connecting rod away from the connection endpoint is connected to the weight.

[0012] On the other hand, this application protects a crane, which includes a main boom, a sub-boom, and the above anti-tilting device that are hinged to each other.

[0013] In some embodiments, there are two groups of anti-tilting devices arranged at intervals, and the anti-tilting support rods in the two groups of anti-tilting devices are connected by web members.

[0014] In some embodiments, the sub-boom includes boom sections and a sub-boom connection support seat provided on the boom sections. The sub-boom connection support seat has a triangular support structure. The first end of the anti-tilting support rod is hinged to the top end of the sub-boom connection support seat, and the second end of the connecting member is hinged to the sub-boom connection support seat.

[0015] In some embodiments, the sub-boom connection support seat includes a first sub-boom support rod and a second sub-boom support rod. The connection between the first sub-boom support rod and the second sub-boom support rod is hinged to the anti-tilting support rod. The connecting member is hinged to the second sub-boom support rod. The second end of the anti-tilting support rod is located on or above the extension line of the first sub-boom support rod.

[0016] In some embodiments, the main boom includes main boom sections and a tower head provided on the main boom sections. The tower head is provided with an inner groove for receiving the second end of the anti-tilting support rod.

[0017] In some embodiments, the tower head is provided with a tower head slide rail extending in the height direction, and the top end of the tower head slide rail communicates with the inner groove.

[0018] In the technical solution of the present application, since the first end of the anti-tilting strut is hinged to the secondary boom, and the first end of the connecting member is slidably connected to the anti-tilting strut, and the second end of the connecting member is hinged to the secondary boom, the connecting member can limit the yaw angle of the anti-tilting strut relative to the secondary boom to ensure that the second end of the anti-tilting strut abuts against the main boom at an appropriate angle. In addition, the horizontal plane where the weight is located is above the horizontal plane where the first end of the anti-tilting strut is located. Relative to the first end of the anti-tilting strut: the center of gravity of the weight is located close to the secondary boom. Therefore, as the angle of the secondary boom changes, the center of the weight can also change accordingly. In the state where the boom of the crane is lying down, the weight is in a position close to the secondary boom. As the main boom is lifted, the secondary boom rotates counterclockwise relative to the hinge point between the secondary boom and the main boom. The center of gravity of the anti-tilting device is always close to the secondary boom. Under the downward traction of the first end of the connecting member, the anti-tilting strut cannot yaw, that is, the weight will not contact and knock against the secondary boom. After the main boom is raised to a certain angle, the secondary boom continues to rotate counterclockwise relative to the hinge point between the secondary boom and the main boom. At this time, the center of gravity of the anti-tilting device is far from the secondary boom. The anti-tilting device begins to rotate counterclockwise under the action of gravity. The first end of the connecting member and the anti-tilting strut slide relative to each other until the first end of the connecting member supports the anti-tilting strut upward, so that the anti-tilting strut cannot continue to rotate counterclockwise. As the secondary boom continues to be raised, the second end of the anti-tilting strut abuts against the main boom and prevents the secondary boom from continuing to rotate counterclockwise relative to the hinge point between the secondary boom and the main boom, thereby preventing the secondary boom from tilting backward. Compared with the solution in the prior art, the connecting member in the present application requires a shorter length, the overall layout is more lightweight and compact, which is convenient for the transfer and transportation of the anti-tilting device and the secondary boom. Moreover, in the design process of the connecting member, the angle relationship between the main boom and the secondary boom does not need to be considered, and the design workload required for application to truss booms of different specifications is smaller.

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

[0020] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. They are used together with the following specific embodiments to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. In the drawings:

[0021] Figure 1 is a schematic structural view of an anti-tilting device in the prior art;

[0022] Figure 2 is a schematic structural view of the anti-tilting device assembled on the truss boom according to the specific embodiment of the present application;

[0023] Figure 3 is Figure 2Front view of the anti-tipping device in

[0024] Figure 4 is Figure 2 Top view of the anti-tipping device in

[0025] Figure 5 is Figure 2 Schematic structural diagram of the connecting piece of the anti-tipping device in

[0026] Explanation of reference numerals

[0027] C Extension line 241 Waist-shaped hole of the pull plate

[0028] 100 Arm section 250 Weight connecting seat

[0029] 110 Sub-arm connecting support 251 First support rod

[0030] 111 First sub-arm support rod 252 Second support rod

[0031] 112 Second sub-arm support rod 253 Connecting rod

[0032] 200 Anti-back-tipping device 260 Web member

[0033] 210 Weight 300 Tower head

[0034] 220 Anti-tipping support rod 310 Inner groove

[0035] 230 Sliding member 320 Tower head slide rail

[0036] 240 Connecting piece D1 First limiting member

[0037] D2 Second limiting member D3 Traction device Detailed implementation manners

[0038] The following will describe in detail the specific implementation manners of the present application with reference to the accompanying drawings. It should be understood that the specific implementation manners described herein are only for explaining and illustrating the present application, and are not used to limit the present application.

[0039] The following describes the anti-tipping device of a crane and the crane according to the present application with reference to the accompanying drawings.

[0040] The present application discloses a new type of anti-tipping device for a crane, as Figure 2 shown, the anti-tipping device in a specific implementation manner includes:

[0041] An anti-tipping support rod 220, the first end of the anti-tipping support rod 220 is hinged to the sub-arm of the crane, and the second end is used to abut against the main arm of the crane;

[0042] The connecting member 240, the first end of the connecting member 240 is slidably connected to the anti-tilting strut 220, and the second end of the connecting member 240 is hinged to the auxiliary boom; and

[0043] The weight 210, the weight 210 is connected to the anti-tilting strut 220, the horizontal plane where the weight 210 is located is above the horizontal plane where the first end of the anti-tilting strut 220 is located. Relative to the first end of the anti-tilting strut 220: the center of gravity of the weight 210 is located at a position close to the auxiliary boom.

[0044] Specifically, referring to Figure 2 , the anti-tilting strut 220 hinged to the auxiliary boom can swing relative to the auxiliary boom, and by slidably connecting the first end of the connecting member 240 to the anti-tilting strut 220 and hinging the second end of the connecting member 240 to the auxiliary boom, the swing angle of the anti-tilting strut 220 relative to the auxiliary boom is restricted, so as to ensure that the second end of the anti-tilting strut 220 abuts against the main boom at a proper angle. When the crane is in the state of retracting the boom, the centers of gravity of the weight 210 and the anti-tilting device are both located at positions close to the auxiliary boom, that is, the weight 210 is in a state close to the auxiliary boom. After the main boom is raised to a certain angle, the auxiliary boom continues to rotate counterclockwise relative to the hinge point between the auxiliary boom and the main boom. At this time, the center of gravity of the weight 210 approaches the main boom. After the center of gravity of the entire anti-tilting device exceeds the hinge point of the anti-tilting strut 220 and the auxiliary boom, the anti-tilting strut 220 starts to rotate counterclockwise under the action of gravity, and the first end of the connecting member 240 slides relative to the anti-tilting strut 220 until the first end of the connecting member 240 supports the anti-tilting strut 220 upward, so that the anti-tilting strut 220 cannot continue to rotate counterclockwise. As the auxiliary boom continues to be raised, the second end of the anti-tilting strut 220 abuts against the main boom and prevents the auxiliary boom from continuing to rotate counterclockwise relative to the hinge point between the auxiliary boom and the main boom, thereby preventing the auxiliary boom from tilting backward. Compared with the solutions in the prior art, such as Figure 1 and Figure 2 shown, the present application does not need to provide additional first limiting member D1 and second limiting member D2 to limit the swing of the anti-tilting device, which can be completed only by the connecting member 240, and the structure is simpler; and the required length of the connecting member 240 is shorter, and the overall layout is more light and compact, which is convenient for the assembly of the anti-tilting device and the auxiliary boom and the transshipment after assembly; in addition, the angle relationship between the main boom and the auxiliary boom does not need to be considered during the design of the connecting member 240, and the required design workload is smaller.

[0045] Among them, the auxiliary boom can adopt different structural forms under different working conditions. For example, the auxiliary boom can be a fixed auxiliary boom, a luffing auxiliary boom, a shield auxiliary boom, etc.

[0046] In this embodiment, the connecting member 240 can be a plate-like structure or a rod-like structure.

[0047] Specifically, referring to Figure 2 , the connecting member 240 in the form of a plate or a rod is convenient to manufacture and simple in design.

[0048] In this embodiment, if Figure 2 , Figure 3 and Figure 5 As shown, the connecting member 240 is a pull plate, and the pull plate is provided with a pull plate waist-shaped hole 241 arranged along the extension direction of the pull plate, and the anti-roll support rod 220 is provided with a sliding member 230 that slides with the pull plate waist-shaped hole 241.

[0049] Specifically, see Figure 2 When the anti-roll support rod 220 deflects clockwise relative to the auxiliary arm, the pull plate also deflects clockwise relative to the auxiliary arm, and the sliding member 230 slides downward relative to the pull plate waist-shaped hole 241; when the anti-roll support rod 220 deflects counterclockwise relative to the auxiliary arm, the pull plate also deflects counterclockwise relative to the auxiliary arm, and the sliding member 230 slides upward relative to the pull plate waist-shaped hole 241; when the sliding member 230 is at the end point of the pull plate waist-shaped hole 241, the anti-roll support rod 220 can no longer deflect, and the connecting member 240 limits the anti-roll support rod 220. Such a setting has a simple structure and is conducive to limiting the deflection range of the anti-roll support rod 220 through the pull plate waist-shaped hole 241 and the hinge point between the anti-roll support rod 220 and the auxiliary arm, without considering the angle relationship between the main arm and the auxiliary arm, and the design is simple.

[0050] Of course, those skilled in the art will appreciate that the form of the connecting member 240 is not limited to the above form, and may also be a double pull plate or a combined pull rod, etc.

[0051] In this embodiment, if Figure 2 and Figure 3 As shown, the anti-tilt device may also include:

[0052] The weight connecting seat 250 includes a first support rod 251, a second support rod 252 and a connecting rod 253 whose end points are connected. The first support rod 251, the second support rod 252 and the anti-roll support rod 220 form a triangular support structure, and the end of the connecting rod 253 away from the connection end point is connected to the weight 210.

[0053] Specifically, see Figure 3 Such a configuration has a simple structure, is easy to manufacture and has good structural strength, which is conducive to the heavy hammer connecting seat 250 stably bearing the heavy hammer 210.

[0054] The present application discloses a novel crane. In a specific implementation manner, the crane comprises a main arm, a secondary arm and the above-mentioned anti-tilt device which are hinged to each other.

[0055] Specifically, the crane has all the technical effects brought about by the above-mentioned anti-tilt device, which will not be described in detail here.

[0056] In this embodiment, if Figure 4As shown, there can be two sets of anti-tilting devices arranged at intervals, and the anti-tilting struts 220 in the two sets of anti-tilting devices are connected by web members 260.

[0057] Specifically, referring to Figure 4 , with such a setting, the structure is simple and reasonable, which can further improve the support effect and structural strength of the anti-tilting device.

[0058] In this embodiment, as Figure 2 shown, the auxiliary arm includes arm sections 100 and an auxiliary arm connection support 110 provided on the arm sections 100. The auxiliary arm connection support 110 has a triangular support structure. The first end of the anti-tilting strut 220 is hinged to the top end of the auxiliary arm connection support 110, and the second end of the connecting member 240 is hinged to the auxiliary arm connection support 110.

[0059] Specifically, referring to Figure 2 , the auxiliary arm connection support 110 extending upward from the arm sections 100 of the auxiliary arm can reduce the lengths of the connecting member 240 and the anti-tilting strut 220. While improving the force stability of the anti-tilting strut 220, it makes the structure more compact, and the triangular support structure has a good load-bearing capacity, which is beneficial to improving the anti-tilting ability of the anti-tilting device.

[0060] In this embodiment, as Figure 2 shown, the auxiliary arm connection support 110 includes a first auxiliary arm support rod 111 and a second auxiliary arm support rod 112. The connection between the first auxiliary arm support rod 111 and the second auxiliary arm support rod 112 is hinged to the anti-tilting strut 220, the connecting member 240 is hinged to the second auxiliary arm support rod 112, and the second end of the anti-tilting strut 220 is located on or above the extension line C of the first auxiliary arm support rod 111.

[0061] Specifically, referring to Figure 2 , with such a setting, it can ensure that when the anti-tilting strut 220 is in the lowest yaw position, the anti-tilting strut 220 is coaxial with the first auxiliary arm support rod 111, thereby improving the support effect of the anti-tilting strut 220 and being beneficial to the anti-tilting strut 220 disengaging from the main arm when it yaws upward.

[0062] In this embodiment, as Figure 2 shown, the main arm includes a main arm section and a tower head 300 provided on the main arm section. The tower head 300 is provided with an inner groove 310 for receiving the second end of the anti-tilting strut 220.

[0063] Specifically, referring to Figure 2 , when the anti-tilting strut 220 abuts against the main arm, the second end of the anti-tilting strut 220 is received in the inner groove 310. With such a setting, it is beneficial to stabilize the support of the anti-tilting strut 220 and improve the anti-tilting ability of the anti-tilting device.

[0064] In this embodiment, asFigure 2 As shown, a tower head slide rail 320 extending in the height direction is provided on the tower head 300, and the top end of the tower head slide rail 320 communicates with the inner groove 310.

[0065] Specifically, referring to Figure 2 , after the anti-tilting strut 220 yaws, the second end of the anti-tilting strut 220 can abut against the tower head slide rail 320, and the tower head slide rail 320 can guide the second end of the anti-tilting strut 220 to slide within the groove surface of the tower head slide rail 320 until the second end of the anti-tilting strut 220 is snapped into the inner groove 310. With such a setting, the friction between the second end of the anti-tilting strut 220 and the tower head 300 can be effectively reduced, which is beneficial for the second end of the anti-tilting strut 220 to enter the inner groove 310 and improves the reliability of the anti-tilting device.

[0066] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, "a plurality" means at least two, such as two, three, etc., unless otherwise specifically and clearly defined.

[0067] In the present application, unless otherwise clearly specified and limited, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0068] In the description of this specification, the description referring to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

Claims

1. The anti-tilt device of the crane is characterized by: The anti-tilt device comprises: an anti-roll support rod (220), wherein a first end of the anti-roll support rod (220) is hinged to the auxiliary arm of the crane, and a second end of the anti-roll support rod (220) is used to abut against the main arm of the crane; A connecting member (240), wherein a first end of the connecting member (240) is slidably connected to the anti-roll support rod (220), and a second end of the connecting member (240) is hinged to the auxiliary arm; and A weight (210), wherein the weight (210) is connected to the anti-roll support rod (220), wherein the horizontal plane where the weight (210) is located is located above the horizontal plane where the first end of the anti-roll support rod (220) is located, and relative to the first end of the anti-roll support rod (220): the center of gravity of the weight (210) is located close to the auxiliary arm.

2. The anti-tilt device according to claim 1, characterized in that: The connecting member (240) is a plate-shaped structure or a rod-shaped structure.

3. The anti-tilt device according to claim 2, characterized in that: The connecting member (240) is a pull plate, the pull plate is provided with a pull plate waist-shaped hole (241) arranged along the extension direction of the pull plate, and the anti-roll support rod (220) is provided with a sliding member (230) that slidably cooperates with the pull plate waist-shaped hole (241).

4. The anti-tilt device according to claim 1, characterized in that: The anti-tilt device also includes: The weight connecting seat (250) comprises a first support rod (251), a second support rod (252) and a connecting rod (253) whose end points are connected to each other. The first support rod (251), the second support rod (252) and the anti-roll support rod (220) form a triangular support structure. The end of the connecting rod (253) away from the connection end point is connected to the weight (210).

5. A crane, characterized in that: The crane comprises the main arm and the auxiliary arm which are hinged to each other and the anti-tilt device according to any one of claims 1 to 4.

6. The crane according to claim 5, characterized in that: The anti-tilt devices are in two groups and are arranged at intervals, and the anti-tilt support rods (220) in the two groups of the anti-tilt devices are connected via a web rod (260).

7. The crane according to claim 5, characterized in that: The jib comprises a boom section (100) and a jib connecting support (110) arranged on the boom section (100); the jib connecting support (110) is a triangular support structure; the first end of the anti-roll support rod (220) is hinged to the top end of the jib connecting support (110); and the second end of the connecting member (240) is hinged to the jib connecting support (110).

8. The crane according to claim 7, characterized in that The jib connecting support (110) comprises a first jib support support rod (111) and a second jib support support rod (112); a connection between the first jib support support rod (111) and the second jib support support rod (112) is hinged to the anti-roll support rod (220); the connecting piece (240) is hinged to the second jib support support rod (112); and a second end of the anti-roll support rod (220) is located on or above an extension line (C) of the first jib support support rod (111).

9. The crane according to claim 5, characterized in that: The main boom comprises a main boom section and a tower head (300) arranged on the main boom section. The tower head (300) is provided with an inner groove (310) for accommodating the second end of the anti-roll support rod (220).

10. The crane according to claim 9, characterized in that The tower head (300) is provided with a tower head slide rail (320) extending in the height direction, and the top end of the tower head slide rail (320) is connected to the inner groove (310).

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