Fixed fly jib anti-back-tilting device and operation machine

Abstract

The utility model relates to the technical field of engineering machinery, and provides a fixed fly jib anti-back-tilting device and an operation machine.The fixed fly jib anti-back-tilting device comprises a fixed frame, a fixed fly jib, a fixed fly jib, a fixed fly jib and a fixed fly jib, the first traction mechanism is arranged on the fixing frame, the free end of the first traction mechanism is connected with the fly jib, and traction force for preventing the fly jib from inclining backwards can be provided; the second traction mechanism comprises a pair of second traction pieces, the first end of the second traction mechanism is connected with the fixing frame, the second end of the second traction mechanism is connected with the main arm below the fixing frame, and the distance between the pair of second traction pieces is gradually increased from the first end to the second end; the fixing frame is arranged on the main arm, the first traction mechanism exerts forward pulling force on the auxiliary arm, so that the auxiliary arm is effectively prevented from inclining backwards, the second traction mechanism provides stable support for the fixing frame, the overall stability of the main arm can be enhanced, extra supporting force is provided for the fixing frame and the main arm, the main arm is kept in a stable posture, and the service life of the main arm is prolonged. The service life of the mechanical structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering machinery, in particular to a fixed auxiliary arm anti-tilt device and an operating machine. Background Art

[0002] The boom part of the crane's fixed jib working condition consists of the main boom, jib, mast, etc. The main boom and jib are connected by a pull plate or wire rope to maintain a fixed angle. To ensure safety, the lifting angle of the jib and mast is subject to certain restrictions during operation. Exceeding the limit will cause the backward tilt exceeding the safe angle, causing equipment damage and production accidents.

[0003] At present, most fixed jib anti-tilt systems use a cylinder top support method. The working mode of the cylinder requires the cylinder to have a long installation distance to meet its stroke, resulting in excessively high cylinder costs. In addition, an excessively long stroke can easily cause the cylinder pressure to be affected by the environment (mainly temperature) and increase, resulting in insufficient or excessive cylinder thrust, which can easily damage the cylinder and related structures and increase maintenance costs. Utility Model Content

[0004] The utility model provides a fixed auxiliary arm anti-tilt device and an operating machine, which are used to solve the problem of unreliability of the anti-tilt device in the prior art.

[0005] The utility model provides a fixed auxiliary arm anti-tilt device, comprising:

[0006] A fixing frame is provided between the main arm and the auxiliary arm and is located on a side of the auxiliary arm facing the hoisted object;

[0007] a first traction mechanism, disposed on the fixing frame, wherein a free end of the first traction mechanism is connected to the auxiliary arm and is capable of providing traction to prevent the auxiliary arm from tilting backward;

[0008] The second traction mechanism includes a pair of second traction members, the first end of the second traction mechanism is connected to the fixed frame, the second end of the second traction mechanism is connected to the main arm below the fixed frame, and the spacing between the pair of second traction members increases from the first end to the second end.

[0009] According to the fixed auxiliary arm anti-tilt device provided by the utility model, the fixed frame includes a first main beam and multiple second main beams, the multiple second main beams are all connected to the first main beam, and the end of the second main beam away from the first main beam is detachably connected to the main arm.

[0010] According to the fixed auxiliary arm anti-tilt device provided by the utility model, the first main beam is provided with a first connecting hole, the first traction mechanism includes a plurality of first traction members, the first end of each first traction member is connected to the fixed frame, and the second end of the first traction member is a free end for connecting to the auxiliary arm.

[0011] According to the fixed auxiliary arm anti-tilt device provided by the present invention, the first traction members are provided in an even number, and the plurality of first traction members are arranged in parallel.

[0012] According to the fixed auxiliary arm anti-tilt device provided by the utility model, the first traction member is a pull plate or a rope.

[0013] According to the fixed auxiliary arm anti-tilt device provided by the present invention, the first main beam is further provided with a second connecting hole, and the first end of each second traction member is connected to the second connecting hole.

[0014] According to the fixed auxiliary arm anti-tilt device provided by the present invention, the plurality of second main beams are parallel to each other and are vertically connected to the first main beam.

[0015] According to the fixed auxiliary arm anti-tilt device provided by the present invention, a first connecting rod is detachably connected between two adjacent second main beams, and the first connecting rod is vertically connected to the second main beam.

[0016] According to the fixed auxiliary arm anti-tilt device provided by the present invention, a second connecting rod is detachably connected between two adjacent second main beams, and an angle is formed between the second connecting rod and the second main beam.

[0017] In a second aspect, the present invention further provides an operating machine, comprising a main arm, a secondary arm, and the fixed secondary arm anti-tilt device as described in the first aspect.

[0018] The utility model provides a fixed jib anti-tilt device, which is arranged between a main arm and a jib. When in use, a fixing frame is arranged on the main arm, and a first traction mechanism provides traction to prevent the jib from tilting backward. When the jib is subjected to an external force or tends to tilt backward, the first traction mechanism applies a forward pulling force to the jib through the traction provided by the first traction mechanism, thereby effectively preventing the jib from tilting backward, enhancing the stability of the jib and ensuring the safety and reliability of the mechanical structure during operation. Compared with traditional cylinder-type anti-tilt devices, the utility model has a reliable structure. Only the pulling force needs to be applied to the jib by the fixed jib anti-tilt device, and no supporting force or traction force needs to be applied to the fixed jib. This facilitates installation, saves costs, and improves the anti-tilt effect of the jib. The second traction mechanism provides stable support for the fixing frame by connecting its free end to the bottom of the main arm, thereby enhancing the overall stability of the main arm. When the main arm is subjected to an external force or needs to bear a large load, the second traction mechanism provides additional supporting force to the fixing frame and the main arm, helping to disperse the stress on the main arm, so that the main arm maintains a stable posture and extends the service life of the mechanical structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the present invention or the prior art, a brief introduction will be given below to the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0020] Figure 1 It is a structural schematic diagram of a fixed auxiliary arm anti-tilt device provided in an embodiment of the utility model.

[0021] Figure 2 It is a structural schematic diagram of a fixing frame provided by an embodiment of the utility model.

[0022] Figure 3 It is a structural schematic diagram of an operating machine provided by the utility model.

[0023] Reference numerals:

[0024] 1. Fixed frame; 2. Main arm; 3. Auxiliary arm; 4. First traction member; 5. Second traction member; 6. Fixed auxiliary arm; 11. First main beam; 12. Second main beam; 13. First connecting rod; 14. Second connecting rod. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the present invention more clear, the following will be combined with the accompanying drawings to clearly and completely describe the technical solutions of the present invention. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0026] In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are only for the convenience of describing the embodiments of the present invention and simplifying the description. They do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed and operate in a specific direction, and therefore should not be understood as limiting the embodiments of the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance.

[0027] In the prior art, the jib and the mast are hinged at the top of the main arm, the jib is used to install the lifting pulley, and the jib and the main arm are fixedly connected by a pull plate or a wire rope and maintain a certain angle. Usually, a cylinder is provided between the main arm and the mast and between the main arm and the jib. The cylinder pushes from the rear to provide a force to prevent the jib and the mast from tilting backward. However, the cost of the cylinder is too high and the cylinder is required to have a long working stroke. The excessive stroke not only has high requirements on the related connecting structure, but also easily causes insufficient or excessive cylinder thrust, which is easy to cause damage to the cylinder and related structures, and increase maintenance costs.

[0028] The following combination Figure 1-Figure 3 The utility model describes a fixed auxiliary arm anti-tilt device and an operating machine.

[0029] like Figure 1-Figure 2 As shown, this embodiment provides a fixed auxiliary arm anti-tilt device, including: a fixed frame 1, a first traction mechanism and a second traction mechanism.

[0030] The fixing frame 1 is arranged between the main arm 2 and the auxiliary arm 3 , and can be arranged on the top of the main arm 2 , and is located on the side of the auxiliary arm 3 facing the hoisted object, that is, in front of the auxiliary arm 3 .

[0031] The first traction mechanism is arranged on the fixed frame 1, and the free end of the first traction mechanism is connected to the auxiliary arm 3, which can provide traction to prevent the auxiliary arm 3 from tilting backward; the second traction mechanism includes a pair of second traction members 5, the first end of the second traction mechanism is connected to the fixed frame 1, and the second end of the second traction mechanism is connected to the main arm 2 below the fixed frame 1, and the spacing between the pair of second traction members 5 increases from the first end to the second end.

[0032] It can be seen from the above scheme that when the utility model is in use, the fixing frame 1 is set on the main arm 2, and the first traction mechanism provides traction to prevent the auxiliary arm 3 from tilting backward. When the auxiliary arm 3 is subjected to external force or has a tendency to tilt backward, the first traction mechanism applies a forward pulling force to the auxiliary arm 3 through the traction force provided by it, thereby effectively preventing the auxiliary arm 3 from tilting backward, ensuring the safety and reliability of the mechanical structure during operation; the second traction mechanism provides stable support for the fixing frame 1 through the connection between its free end and the bottom of the main arm 2, which can enhance the overall stability of the main arm 2. When the main arm 2 is subjected to external force or needs to bear a large load, the second traction mechanism can provide additional support force for the fixing frame 1 and the main arm 2, which helps to disperse the stress on the main arm 2, so that the main arm 2 maintains a stable posture, and extends the service life of the mechanical structure.

[0033] In large lifting equipment, the spacing between a pair of second traction members 5 increases from the first end to the second end, which can adapt to specific motion trajectories or working space requirements. In a limited space, the increasing spacing can more effectively adapt to the shape of the main arm 2 and avoid interference between components.

[0034] In some embodiments, the first traction mechanism includes multiple first traction members 4, which can be pull plates or ropes. The first end of each first traction member 4 is connected to the fixed frame 1, and the second end of the first traction member 4 is a free end, which is used to connect with the auxiliary arm 3 to achieve traction of the auxiliary arm 3.

[0035] Preferably, the first traction members 4 are provided in an even number, and the multiple first traction members 4 are arranged in parallel to evenly distribute the force to the multiple first traction members 4 .

[0036] In some embodiments, the fixing frame 1 includes a first main beam 11 and multiple second main beams 12. The first main beam 11 is provided with a first connecting hole for connecting with the first traction member 4, and a second connecting hole for connecting with the second traction member 5. The first connecting hole can be provided on the ear plate on the upper end surface of the first main beam 11, and the second connecting hole is provided on the ear plate on the lower end surface of the first main beam 11.

[0037] In this embodiment, the second traction member 5 can be a rigid connection member such as a pull plate or a flexible connection member such as a rope, and the first end of each second traction member 5 is connected to the second connection hole.

[0038] The plurality of second main beams 12 are all connected to the first main beam 11, and one end of the second main beam 12 away from the first main beam 11 is detachably connected to the main arm 2. For example, one end of the second main beam 12 is connected to the main arm 2 via a pin, achieving a detachable connection with the main arm 2 and enabling quick installation. The other end can be connected to the first main beam 11 via a thread, improving connection reliability.

[0039] Preferably, the plurality of second main beams 12 are parallel to each other and are vertically connected to the first main beam 11 .

[0040] In some embodiments, a first connecting rod 13 and a second connecting rod 14 are detachably connected between two adjacent second main beams 12. The first connecting rod 13 is vertically connected to the second main beam 12. The second connecting rod 14 and the second main beam 12 have an included angle. The first connecting rod 13 and the second main beam 12 are detachably connected, and the second connecting rod 14 and the second main beam 12 are detachably connected. Figure 3 As shown, four second main beams 12 are provided, and the four second main beams 12 are parallel to each other and are vertically connected to the first main beam 11. A first connecting rod 13 and a second connecting rod 14 are connected between two adjacent main beams through a pin or a bolt. The two ends of the first connecting rod 13 are respectively vertically connected to a pair of second main beams 12, and the two ends of the second connecting rod 14 are respectively obliquely connected to a pair of second main beams 12. The structural stability and reliability of the fixing frame 1 are improved by the first connecting rod 13 and the second connecting rod 14.

[0041] With such an arrangement, the fixing frame 1 provided by the utility model is assembled from loose parts and can be conveniently disassembled and assembled on site. Compared with the traditional oil cylinder type anti-tilt device, it is simple to install and has a reliable structure. It only needs to apply a pulling force to the auxiliary arm 3 through the fixed auxiliary arm anti-tilt device, and there is no need to apply a supporting force or traction force to the fixed auxiliary arm 6. It is easy to install, saves costs, and improves the anti-tilt effect of the auxiliary arm 3.

[0042] An embodiment of the present utility model provides an operating machine, comprising a main arm 2 , a jib 3 and the above-mentioned fixed jib anti-tilt device, wherein a fixing frame 1 of the fixed jib anti-tilt device is connected to the top of the main arm 2 .

[0043] In some embodiments, the work machine is a crane, such as a rail crane.

[0044] In the description of the embodiments of the present invention, it should be noted that, unless otherwise specified or limited, the terms "connected" and "connection" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of the above terms in the embodiments of the present invention based on specific circumstances.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or modes and features of different embodiments or modes described in this specification without contradiction.

[0046] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. A fixed jib anti-tilt device, characterized in that: include: A fixing frame (1) is arranged between the main arm (2) and the auxiliary arm (3), and is located on a side of the auxiliary arm (3) facing the hoisted object; A first traction mechanism is provided on the fixing frame (1), wherein the free end of the first traction mechanism is connected to the auxiliary arm (3) and is capable of providing a traction force to prevent the auxiliary arm (3) from tilting backward; The second traction mechanism comprises a pair of second traction members (5), a first end of the second traction mechanism is connected to the fixing frame (1), a second end of the second traction mechanism is connected to the main arm (2) below the fixing frame (1), and a spacing between the pair of second traction members (5) increases from the first end to the second end.

2. The fixed jib anti-tilt device according to claim 1, characterized in that: The fixing frame (1) comprises a first main beam (11) and a plurality of second main beams (12), wherein the plurality of second main beams (12) are all connected to the first main beam (11), and an end of the second main beam (12) away from the first main beam (11) is detachably connected to the main arm (2).

3. The fixed jib anti-tilt device according to claim 2, characterized in that: The first main beam (11) is provided with a first connecting hole, and the first traction mechanism comprises a plurality of first traction members (4), a first end of each first traction member (4) being connected to the first connecting hole, and a second end of the first traction member (4) being a free end for connecting to the auxiliary arm (3).

4. The fixed jib anti-tilt device according to claim 3, characterized in that: The first traction members (4) are arranged in an even number, and the plurality of first traction members (4) are arranged in parallel.

5. The fixed jib anti-tilt device according to claim 3, characterized in that: The first traction member (4) is a pulling plate or a rope.

6. The fixed jib anti-tilt device according to claim 2, characterized in that: The first main beam (11) is further provided with a second connection hole, and the first end of each second traction member (5) is connected to the second connection hole.

7. The fixed jib anti-tilt device according to claim 2, characterized in that: The plurality of second main beams (12) are parallel to each other and are vertically connected to the first main beam (11).

8. The fixed jib anti-tilt device according to claim 2, characterized in that: A first connecting rod (13) is detachably connected between two adjacent second main beams (12), and the first connecting rod (13) is vertically connected to the second main beam (12).

9. The fixed jib anti-tilt device according to claim 2, characterized in that: A second connecting rod (14) is detachably connected between two adjacent second main beams (12), and an angle is formed between the second connecting rod (14) and the second main beam (12).

10. A working machine, characterized in that: It comprises a main arm (2), a jib (3) and a fixed jib anti-tilt device according to any one of claims 1 to 9.

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