Telescopic arm for an ultra-span portal machine

Abstract

The utility model discloses a telescopic arm for super span portal crane belongs to mechanical engineering technical field, it includes support base, the top of support base is provided with sleeve board no.

Description

Technical Field

[0001] This utility model relates to the field of mechanical engineering technology, specifically a telescopic arm for a long-span gantry crane. Background Technology

[0002] With the rapid development of the port and logistics industry, gantry cranes, as important lifting equipment, are widely used in container lifting, handling, and stacking operations. In port loading and unloading, large equipment installation, and heavy component lifting, gantry cranes are key equipment, and their operating range and flexibility directly affect project efficiency. Currently, gantry cranes mainly use telescopic booms to lift items. Most mainstream telescopic boom structures adopt a multi-stage sleeve design, using hydraulic or mechanical transmission to change the boom length. However, most telescopic booms do not have a self-lubricating structure. When the boom sections move relative to each other, the lack of lubrication easily leads to increased frictional resistance, accelerates the wear of seals and metal surfaces, reduces service life, and thus affects the crane's operating efficiency and accuracy. Utility Model Content

[0003] The purpose of this invention is to provide a telescopic boom for a long-span gantry crane to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a telescopic boom for a super-span gantry crane, comprising a support base, a first sleeve plate disposed above the support base, a second sleeve plate slidably connected inside the first sleeve plate, an oil tank and a support frame fixedly connected outside the first sleeve plate, a lubrication cylinder fixedly connected outside the first sleeve plate, a connecting pipe fixedly connected to one side of the oil tank, a conveying pipe provided at one end of the connecting pipe, a reciprocating structure disposed inside the support frame, the reciprocating structure slidably connected inside the lubrication cylinder, a valve stem rotatably connected inside the connecting pipe, an adjusting structure disposed on one side of the reciprocating structure, the adjusting structure being connected to the valve stem, the reciprocating structure comprising a rotating shaft, a moving plate and a positioning rod, a concave rotating plate connected to one end of the rotating shaft, an auxiliary rod fixedly connected to one side of the moving plate, a turntable rotatably connected to the positioning rod, a limit post fixedly connected to one side of the turntable, and a piston fixedly connected to one side of the moving plate.

[0005] As a further preferred embodiment of this technical solution, one end of the conveying pipe is connected to the lubrication cylinder, and the rotating shaft is rotatably connected within the support frame.

[0006] As a further preferred embodiment of this technical solution, the movable plate is slidably connected inside the support frame, the positioning rod is fixedly connected outside the support frame, and the limiting column is slidably connected inside the concave rotating plate.

[0007] As a further preferred embodiment of this technical solution, the auxiliary rod is slidably connected inside the concave rotating plate, and the piston is slidably connected inside the lubrication cylinder.

[0008] As a further preferred embodiment of this technical solution, the adjustment structure includes a connecting plate, a gear, and a fixed cylinder. The connecting plate is fixedly connected to the other side of the movable plate, and a gear plate is fixedly connected to one side of the rotating shaft.

[0009] As a further preferred embodiment of this technical solution, the movable plate is fixedly connected to the outside of the valve stem, the fixed cylinder is fixedly connected to the outside of the connecting pipe, and a coil spring is provided on one side of the gear.

[0010] As a further preferred embodiment of this technical solution, the gear is connected to the fixed cylinder via a coil spring, and the coil spring is sleeved on the outside of the valve stem.

[0011] This utility model provides a telescopic boom for a long-span gantry crane, which has the following advantages:

[0012] (1) This utility model sets up a support frame, a lubrication cylinder and a reciprocating structure. The turntable is driven to rotate by an external motor, and the limiting column slides in the concave rotating plate. The concave rotating plate swings around the rotating shaft. Since the auxiliary rod on the front of the moving plate slides in the concave rotating plate, the moving plate drives the piston to reciprocate in the lubrication cylinder. Through the cooperation between the turntable, the concave rotating plate and the moving plate, the lubricating oil in the lubrication cylinder can be evenly sprayed at the connection between the first sleeve plate and the second sleeve plate, avoiding the increase of frictional resistance and affecting the wear of the seal and the metal surface. This effectively ensures the service life of the telescopic arm and improves the operating efficiency and accuracy of the crane.

[0013] (2) By setting an adjustment structure, the toothed plate will move synchronously with the moving plate through the connecting plate. When the toothed plate contacts the gear, the valve rod will flip inside the connecting pipe. Then the lubricating oil in the oil tank will be transported to the lubrication cylinder through the connecting pipe and the conveying pipe. When the gear rotates, it will drive the coil spring to deform. When the toothed plate is separated from the gear, the valve rod will be reset by the action of the coil spring, so that the lubricating oil in the lubrication cylinder can be replenished in time, avoiding the phenomenon of insufficient lubricating oil and ensuring the flexibility of the telescopic arm. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0015] Figure 2 This is a three-dimensional structural diagram of the support frame of this utility model;

[0016] Figure 3 This is a three-dimensional structural diagram of the reciprocating structure of this utility model;

[0017] Figure 4 This is a three-dimensional structural diagram of the adjustment structure of this utility model;

[0018] In the diagram: 1. Support base; 2. Sleeve 1; 3. Sleeve 2; 4. Oil tank; 5. Support frame; 6. Lubrication cylinder; 7. Reciprocating structure; 701. Rotating shaft; 702. Moving plate; 703. Auxiliary rod; 704. Concave rotating plate; 705. Positioning rod; 706. Turntable; 707. Limiting post; 708. Piston; 8. Adjusting structure; 801. Connecting plate; 802. Gear; 803. Gear plate; 804. Fixed cylinder; 805. Coil spring; 9. Connecting pipe; 10. Conveying pipe; 11. Valve stem. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] This utility model provides a technical solution: such as Figure 1 and Figure 4 As shown, in this embodiment, a telescopic boom for a long-span gantry crane includes a support base 1, a first sleeve 2 is provided above the support base 1, a second sleeve 3 is slidably connected inside the first sleeve 2, an oil tank 4 and a support frame 5 are fixedly connected outside the first sleeve 2, a lubrication cylinder 6 is fixedly connected outside the first sleeve 2, a connecting pipe 9 is fixedly connected to one side of the oil tank 4, a conveying pipe 10 is provided at one end of the connecting pipe 9, a reciprocating structure 7 is provided inside the support frame 5, the reciprocating structure 7 is slidably connected inside the lubrication cylinder 6, and rotates inside the connecting pipe 9. A valve stem 11 is connected to the reciprocating structure 7. An adjustment structure 8 is provided on one side of the reciprocating structure 7. The adjustment structure 8 is connected to the valve stem 11. The reciprocating structure 7 includes a rotating shaft 701, a moving plate 702, and a positioning rod 705. One end of the rotating shaft 701 is connected to a concave rotating plate 704. An auxiliary rod 703 is fixedly connected to one side of the moving plate 702. A turntable 706 is rotatably connected to the positioning rod 705. A limit post 707 is fixedly connected to one side of the turntable 706. A piston 708 is fixedly connected to one side of the moving plate 702.

[0021] like Figure 1 and Figure 3 As shown, one end of the delivery pipe 10 is connected to the lubrication cylinder 6, the rotating shaft 701 is rotatably connected to the support frame 5, the moving plate 702 is slidably connected to the support frame 5, the positioning rod 705 is fixedly connected to the outside of the support frame 5, the limiting post 707 is slidably connected to the concave rotating plate 704, the auxiliary rod 703 is slidably connected to the concave rotating plate 704, and the piston 708 is slidably connected to the lubrication cylinder 6.

[0022] By setting a concave rotating plate 704, an external motor drives the turntable 706 to rotate, while the limiting post 707 slides within the concave rotating plate 704. Since the auxiliary rod 703 on the front of the moving plate 702 slides within the concave rotating plate 704, the moving plate 702 can move within the support frame 5 with the swing amplitude of the concave rotating plate 704. The moving plate 702 can reciprocate within the support frame 5, thereby controlling the output of lubricating oil.

[0023] like Figure 4 As shown, the adjustment structure 8 includes a connecting plate 801, a gear 802, and a fixed cylinder 804. The connecting plate 801 is fixedly connected to the other side of the moving plate 702. A toothed plate 803 is fixedly connected to one side of the rotating shaft 701. The moving plate 702 is fixedly connected to the outside of the valve stem 11. The fixed cylinder 804 is fixedly connected to the outside of the connecting pipe 9. A coil spring 805 is provided on one side of the gear 802. The gear 802 is connected to the fixed cylinder 804 through the coil spring 805. The coil spring 805 is sleeved on the outside of the valve stem 11.

[0024] By setting a coil spring 805, when the moving toothed plate 803 contacts the gear 802, the gear 802 will drive the coil spring 805 to deform when it rotates, so that the coil spring 805 plays a certain supporting role for the rotation of the valve stem 11. When the valve stem 11 loses resistance, it can be reset by the coil spring 805, thus avoiding the phenomenon of misalignment of the valve stem 11 when it flips.

[0025] This utility model provides a telescopic boom for a long-span gantry crane, and its specific working principle is as follows:

[0026] When the telescopic arm is in use, the turntable 706 can be rotated by an external motor, and the limiting post 707 will slide in the concave rotating plate 704. The concave rotating plate 704 will swing around the rotating shaft 701. Since the auxiliary rod 703 on the front of the moving plate 702 slides in the concave rotating plate 704, the moving plate 702 will drive the piston 708 to reciprocate in the lubrication cylinder 6. The piston 708 will deliver the lubricating oil in the lubrication cylinder 6 to the contact surface between the first sleeve 2 and the second sleeve 3.

[0027] When the moving plate 702 is resetting, the toothed plate 803 will move synchronously with the moving plate 702 through the connecting plate 801. When the toothed plate 803 contacts the gear 802, the valve stem 11 will flip inside the connecting pipe 9. Then the lubricating oil in the oil tank 4 will be transported to the lubrication cylinder 6 through the connecting pipe 9 and the conveying pipe 10. When the gear 802 rotates, it will drive the coil spring 805 to deform. When the toothed plate 803 disengages from the gear 802, the valve stem 11 will be reset by the action of the coil spring 805.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A telescopic boom for a long-span gantry crane, comprising a support base (1), characterized in that: A sleeve plate (2) is provided above the support base (1). A sleeve plate (3) is slidably connected inside the sleeve plate (2). An oil tank (4) and a support frame (5) are fixedly connected outside the sleeve plate (2). A lubrication cylinder (6) is fixedly connected outside the sleeve plate (2). A connecting pipe (9) is fixedly connected to one side of the oil tank (4). A conveying pipe (10) is provided at one end of the connecting pipe (9). A reciprocating structure (7) is provided inside the support frame (5). The reciprocating structure (7) is slidably connected inside the lubrication cylinder (6). A valve stem (11) is rotatably connected inside the connecting pipe (9). An adjustment structure (8) is provided on one side of the structure (7). The adjustment structure (8) is connected to the valve stem (11). The reciprocating structure (7) includes a rotating shaft (701), a moving plate (702), and a positioning rod (705). One end of the rotating shaft (701) is connected to a concave rotating plate (704). An auxiliary rod (703) is fixedly connected to one side of the moving plate (702). A turntable (706) is rotatably connected to the positioning rod (705). A limit post (707) is fixedly connected to one side of the turntable (706). A piston (708) is fixedly connected to one side of the moving plate (702).

2. The telescopic boom for a long-span gantry crane according to claim 1, characterized in that: One end of the delivery pipe (10) is connected to the lubrication cylinder (6), and the rotating shaft (701) is rotatably connected inside the support frame (5).

3. The telescopic boom for a long-span gantry crane according to claim 1, characterized in that: The movable plate (702) is slidably connected inside the support frame (5), the positioning rod (705) is fixedly connected outside the support frame (5), and the limiting post (707) is slidably connected inside the concave rotating plate (704).

4. The telescopic boom for a long-span gantry crane according to claim 1, characterized in that: The auxiliary rod (703) is slidably connected inside the concave rotating plate (704), and the piston (708) is slidably connected inside the lubrication cylinder (6).

5. The telescopic boom for a long-span gantry crane according to claim 1, characterized in that: The adjustment structure (8) includes a connecting plate (801), a gear (802) and a fixed cylinder (804). The connecting plate (801) is fixedly connected to the other side of the moving plate (702), and a toothed plate (803) is fixedly connected to one side of the rotating shaft (701).

6. The telescopic boom for a super-span gantry crane according to claim 5, characterized in that: The movable plate (702) is fixedly connected to the outside of the valve stem (11), the fixed cylinder (804) is fixedly connected to the outside of the connecting pipe (9), and a coil spring (805) is provided on one side of the gear (802).

7. A telescopic boom for a long-span gantry crane according to claim 6, characterized in that: The gear (802) is connected to the fixed cylinder (804) via a coil spring (805), which is sleeved on the outside of the valve stem (11).

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