Locking device for steering oil cylinder of gantry crane

Abstract

The utility model relates to the technical field of gantry cranes, and provides an anti-loosening device for a steering oil cylinder of a gantry crane, the anti-loosening device is carried on the steering oil cylinder, the steering oil cylinder comprises a screw rod, a fixed bolt seat and an oil cylinder, a first end of the screw rod is arranged in the oil cylinder in a sliding manner, a second end of the screw rod is in threaded connection with the fixed bolt seat, and the anti-loosening device comprises a fixing part and a fastening part. The fixing part is arranged on the fixing bolt seat, the fastening part is arranged at the second end of the lead screw, a connecting part is arranged on the fastening part, and the other end of the connecting part is rotationally connected with the fixing part; when the steering oil cylinder works, the connecting part moves along with the movement of the fixing part, and the fastening part fixed at the second end of the screw rod moves along with the connecting part, so that the front-back pulling force between the screw rod and the fixing bolt seat in the rotating dragon movement process is avoided, and the condition of loose connection or loose thread between the screw rod and the fixing bolt seat is not easy to occur; the working stability of the auger is improved, and potential safety hazards are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gantry cranes, in particular to an anti-loosening device for a steering oil cylinder of a gantry crane. Background Art

[0002] As an important logistics handling tool, gantry cranes are widely used in ports, cargo yards and other places. Gantry cranes are usually composed of main beams, outriggers, traveling mechanisms, lifting mechanisms, etc. The traveling mechanisms are responsible for the movement and steering of the gantry crane. In order to realize the steering function of the gantry crane, steering cylinders are usually installed on the traveling wheels of the gantry crane.

[0003] The existing steering oil cylinder usually includes a screw rod and a fixed pin seat, and the screw rod and the fixed pin seat are connected by threaded fastening. During installation, the screw rod and the fixed pin seat are screwed together by threads, and then reinforced with a clamping nut to prevent the connection between the screw rod and the fixed pin seat from loosening or even slipping due to the tension of the steering oil cylinder before and after during the operation of the gantry crane. However, when the clamping nut is loose and is not discovered and locked in time, it is easy for the screw rod to slip and the fixed pin seat to loosen. Utility Model Content

[0004] The utility model aims to provide an anti-loosening device for a gantry crane steering cylinder, aiming to improve and replace the locking nut and effectively prevent the problem of the screw rod and the fixed pin seat from loosening.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: an anti-loosening device for a gantry crane steering cylinder, which is mounted on the steering cylinder, and the steering cylinder includes a screw rod, a fixed pin seat and a cylinder. The first end of the screw rod is slidably arranged in the cylinder, and the second end of the screw rod is threadedly connected to the fixed pin seat. The anti-loosening device includes a fixing component and a fastening component. The fixing component is arranged on the fixed pin seat, and the fastening component is arranged on the second end of the screw rod. A connecting part is arranged on the fastening component, and the other end of the connecting part is rotatably connected to the fixing component.

[0006] Preferably, the fixing component comprises an anti-slip block and a fixing rod, the anti-slip block is arranged on the fixing pin seat, the fixing rod is arranged on the anti-slip block, and one end of the connecting portion is rotatably connected to the fixing rod.

[0007] Preferably, the fastening component includes a first fastening portion and a second fastening portion that are detachably connected.

[0008] Preferably, the first fastening portion and the second fastening portion form a clamp-type structure.

[0009] Preferably, the connecting portion is an L-shaped structure, the transverse connecting portion of the L-shaped structure is rotatably connected to the fixing rod, and the vertical connecting portion of the L-shaped structure is integrally formed with the fastening component.

[0010] Preferably, an anti-drop cap is provided at the end of the fixing rod.

[0011] Preferably, a groove is provided at the bottom of the anti-falling block.

[0012] After adopting the above technical solution, the utility model has the following advantages compared with the background technology:

[0013] 1. Set a fixing component and a fastening component, set the fixing component on the fixed pin seat, lock the fastening component on the second end of the screw rod, connect the fixing component and the fastening component through a connecting part, one end of the connecting part is fixedly connected to the fastening component, and the other end of the connecting part is rotatably connected to the fixing component. When the steering cylinder is working, the connecting part moves with the movement of the fixing component, and the fastening component fixed to the second end of the screw rod moves with the connecting part, so as to avoid the front and rear pulling force between the screw rod and the fixed pin seat during the dragon turning movement, so that the connection between the screw rod and the fixed pin seat is not easy to be loose or slipped, thereby improving the stability of the dragon turning work and reducing safety hazards;

[0014] 2. The anti-dropout block is fixed on the fixed pin seat by screw locking, so that the anti-dropout block is not easy to be detached from the fixed pin seat. The fixed rod is fixedly arranged on the anti-dropout block, so that the fixed rod and the anti-dropout block are fixedly connected. One end of the connecting part is rotatably connected to the fixed rod. When the steering cylinder is working, the anti-dropout block and the fixed rod are firmly connected, so that the anti-dropout block can maintain a good fastening state during the turning movement, thereby further improving stability and safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the steering cylinder of the utility model;

[0016] Figure 2 It is a schematic diagram of the fastening component of the utility model;

[0017] Figure 3 It is a schematic diagram of the groove of the utility model.

[0018] Description of reference numerals:

[0019] 10. Steering cylinder; 11. Screw rod; 12. Fixed latch seat; 13. Cylinder

[0020] 20. fixing part; 21. anti-dropping block; 22. fixing rod; 23. anti-dropping cap; 24. groove;

[0021] 30. fastening member; 31. first fastening portion; 32. second fastening portion;

[0022] 40. Connecting part. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model. In addition, it should be noted that:

[0024] The terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are all based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or element of the utility model must have a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0025] When an element is referred to as being “fixed to” or “disposed on” or “provided on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0026] Unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.

[0027] Example

[0028] In order to facilitate the understanding of the present invention, before discussing the present invention, necessary explanations and descriptions are first made on the gantry crane steering cylinder.

[0029] Please refer to Figure 1-Figure 3 As shown, the steering cylinder 10 of the gantry crane includes a screw rod 11, a fixed latch seat 12 and a cylinder 13. The first end of the screw rod 11 is slidably set in the cylinder 13, and the second end of the screw rod 11 is threadedly connected to the fixed latch seat 12. When the steering cylinder 10 is working, the fixed latch seat 12 drives the second end of the screw rod 11 to generate a forward pulling force. At this time, the first end of the screw rod 11 slides forward inside the cylinder. Because the screw rod 11 and the fixed latch seat 12 are only connected by threads, when the steering cylinder 10 is working, the reciprocating pulling force back and forth can easily cause the connection between the screw rod 11 and the fixed latch seat 12 to loosen, and this loosening may cause slipping or even falling off.

[0030] Therefore, please refer to Figure 1-Figure 3 As shown, the utility model provides an anti-loosening device for the steering cylinder of a gantry crane, which includes a fixing component 20 and a fastening component 30. The fixing component 20 is arranged on the fixed latch seat 12, and the fastening component 30 is arranged on the second end of the screw rod 11. A connecting portion 40 is arranged on the fastening component 30, and the other end of the connecting portion 40 is rotatably connected to the fixing component 20, and the fastening component 30 locks the screw rod 11. In this way, when the steering cylinder 10 is working, the connecting portion 40 moves with the movement of the fixing component 20, and the fastening component 30 fixed to the second end of the screw rod 11 moves with the connecting portion 40, so as to avoid the front and rear pulling force between the screw rod 11 and the fixed latch seat 12 during the gantry crane movement, so that the connection between the screw rod 11 and the fixed latch seat 12 is not easy to be loose or slipped, thereby improving the stability of the gantry crane operation and reducing safety hazards.

[0031] Please refer to Figure 1-Figure 3 As shown, in a specific embodiment, the fixing component 20 includes an anti-slip block 21 and a fixing rod 22. The anti-slip block 21 is fixedly arranged on the fixing pin seat 12 by screw locking, so that the anti-slip block 21 is not easily detached from the fixing pin seat 12. The fixing rod 22 is fixedly arranged on the anti-slip block 21, so that the fixing rod 22 and the anti-slip block 21 are fixedly connected. One end of the connecting part 40 is rotatably connected to the fixing rod 22. When the steering cylinder 10 is working, it is firmly connected by the anti-slip block 21 and the fixing rod 22, so that it can maintain a good fastening state during the turning movement, thereby further improving stability and safety.

[0032] Please refer to Figure 1-Figure 3 As shown, in a specific embodiment, the fastening component 30 includes a first fastening portion 31 and a second fastening portion 32 that are detachably connected. The first fastening portion 31 and the second fastening portion 32 are detachably connected. When installing the fastening component 30, the first fastening portion 31 is first placed on the screw rod 11, and then the second fastening portion 32 is threadedly connected to the first fastening portion 31, so as to realize quick installation or disassembly of the fastening component 30 and improve the convenience of installation.

[0033] Please refer to Figure 1-Figure 3 As shown, in a specific embodiment, in order to facilitate the operation of the steering cylinder 10, the screw rod 11 is usually set to a cylindrical screw rod 11, and the first fastening part 31 and the second fastening part 32 are set to a clamp-type structure. The first fastening part 31 and the second fastening part 32 can be connected by fastening methods such as buckles and screws to form a complete annular structure, and the screw rod 11 is clamped under the locking force of the buckle or screw to increase stability.

[0034] Please refer to Figure 1-Figure 3As shown, the connecting portion 40 is an L-shaped structure, which is composed of a transverse connecting portion 40 and a vertical connecting portion 40. The transverse connecting portion 40 of the L-shaped structure is rotatably connected to the fixing rod 22 so that it can cooperate with the working movement of the rotating dragon, thereby increasing the flexibility and adaptability of the connecting portion 40. The vertical connecting portion 40 of the L-shaped structure is integrally formed with the fastening component 30, thereby ensuring the firmness and stability between the vertical connecting portion 40 and the fixing component 20 and reducing the risk of loosening at the connection.

[0035] Please refer to Figure 1-Figure 3 As shown, an anti-drop cap 23 is provided at the end of the fixing rod 22 to prevent the connecting portion 40 from accidentally sliding out or falling off from the fixing rod 22, thereby further enhancing the safety of the operation.

[0036] Please refer to Figure 1-Figure 3 As shown, in order to make the fixed latch seat 12 and the anti-dropping block 21 more firmly connected, a groove 24 is provided at the bottom of the anti-dropping block 21 for accommodating the pin shaft on the fixed latch seat 12, a part of the side surface of the head of the pin shaft is cut off, and the size of the groove 24 is matched with the size of the pin shaft after the chamfering treatment, and the depth of the groove 24 is matched with the height of the pin shaft protruding from the fixed latch seat 12, to ensure that the pin shaft can be completely embedded in the groove 24. The cooperation between the pin shaft and the groove 24 can prevent the anti-dropping block 21 from moving or falling off when subjected to external force, thereby increasing the stability and reliability of the device.

[0037] The above is only a preferred specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed by the utility model should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A gantry crane steering cylinder anti-loosening device, mounted on a steering cylinder (10), the steering cylinder (10) comprising a screw rod (11), a fixed latch seat (12) and a cylinder (13), the first end of the screw rod (11) being slidably arranged in the cylinder, the second end of the screw rod (11) being threadedly connected to the fixed latch seat (12), characterized in that: The invention comprises a fixing component (20) and a fastening component (30), wherein the fixing component (20) is arranged on the fixing pin seat (12), the fastening component (30) is arranged on the second end of the screw rod (11), and a connecting part (40) is arranged on the fastening component (30), and the other end of the connecting part (40) is rotatably connected to the fixing component (20).

2. The anti-loosening device of the gantry crane steering cylinder according to claim 1 is characterized in that: The fixing component (20) comprises an anti-slip block (21) and a fixing rod (22); the anti-slip block (21) is arranged on a fixing pin seat (12); the fixing rod (22) is arranged on the anti-slip block (21); and one end of the connecting portion (40) is rotatably connected to the fixing rod (22).

3. The anti-loosening device of the gantry crane steering cylinder according to claim 2 is characterized in that: The fastening component (30) comprises a first fastening portion (31) and a second fastening portion (32) which are detachably connected.

4. The anti-loosening device for the steering cylinder of a gantry crane according to claim 3 is characterized in that: The first fastening portion (31) and the second fastening portion (32) form a clamp-type structure.

5. The anti-loosening device for the gantry crane steering cylinder according to claim 2 is characterized in that: The connecting portion (40) is an L-shaped structure, the transverse connecting portion (40) of the L-shaped structure is rotatably connected to the fixing rod (22), and the vertical connecting portion (40) of the L-shaped structure is integrally formed with the fastening component (30).

6. The anti-loosening device of the gantry crane steering cylinder according to claim 2 is characterized in that: An anti-drop cap (23) is provided at the end of the fixing rod (22).

7. The anti-loosening device for the steering cylinder of a gantry crane according to claim 2, characterized in that: The bottom of the anti-dropping block (21) is provided with a groove (24).

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