Double-acting steering system for aerial work platform

Abstract

The utility model relates to a double-acting steering system for an aerial work platform, which comprises a steering axle, a double-acting oil cylinder, a connecting rod, a cross joint lug plate, cross joints and hubs, the double-acting oil cylinder is fixed on the steering axle, the cross joints are symmetrically hinged to the left side and the right side of the steering axle, and the cross joints are rotatably connected with the hubs through bearings. Cross joint lug plates are fixedly connected to the cross joint, connecting rods are symmetrically arranged on the left side and the right side of the double-acting oil cylinder, one ends of the connecting rods are hinged to the two cross joint lug plates arranged up and down, and the other ends of the connecting rods are hinged to the movable end of the double-acting oil cylinder. Two piston rods of the double-acting oil cylinder are pushed to move left and right through system pressure oil, left-right movement of tires is achieved, linkage mechanisms of the tires on the two sides are fully reduced, the rotation stability and torsion of the tires on the two sides in the rotation process are enhanced, and the structural strength is effectively enhanced; and through transition connection of the connecting rod, the rotating bending torsion of the piston rod of the double-acting oil cylinder is reduced, and the service life of the double-acting oil cylinder is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of aerial work platforms, in particular to a double-acting steering system for aerial work platforms. Background Art

[0002] With the advancement of science and technology, aerial work vehicles are gradually becoming intelligent and automated. The application of technologies such as unmanned driving and remote control makes aerial work safer and more efficient. In addition, the design of the new structure makes the aerial work vehicle simpler and easier to operate, effectively improving work efficiency and reducing maintenance costs.

[0003] For aerial work platforms above 28 meters, due to the heavy weight of the entire vehicle, the structure of the traditional single-acting cylinder driving the tie rod is relatively complex, and the tie rod is prone to bending and breaking, and the safety and stability are not very good, which brings certain adverse effects to the actual use process. For this reason, we propose a double-acting steering system for aerial work platforms. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a double-acting steering system for an aerial work platform, which is connected to a steering cross-piece through a double-acting oil cylinder, and drives the cross-piece to rotate left and right under the push of pressure oil, thereby realizing left and right rotation of the tire.

[0005] The purpose of the utility model is achieved in this way:

[0006] A double-acting steering system for an aerial work platform comprises a steering axle, a double-acting oil cylinder, a connecting rod, a cross lug plate, a cross lug and a wheel hub, wherein the double-acting oil cylinder is fixed on the steering axle, and the left and right sides of the steering axle are symmetrically hinged with cross lugs, the cross lugs are rotatably connected to the wheel hub through bearings, the cross lugs are fixedly connected to the cross lugs, and connecting rods are symmetrically provided on the left and right sides of the double-acting oil cylinder, one end of the connecting rod is hinged to two cross lug plates arranged above and below, and the other end is hinged to the movable end of the double-acting oil cylinder.

[0007] Preferably, one end of the connecting rod is hinged to the movable end of the double-acting cylinder through the cylinder ear plate pin, and the other end of the connecting rod is hinged to the cross ear plate through the cross ear plate pin; the left and right ends of the steering axle are provided with end ear plates, and the two end ear plates arranged upper and lower are hinged to the cross through the cross main pin shaft.

[0008] Preferably, the double-acting cylinder is centrally arranged on one side of the front and rear sides of the steering axle, and the steering axle is provided with a double-acting cylinder seat plate corresponding to the cylinder barrel of the double-acting cylinder, and the cylinder barrel of the double-acting cylinder is fixed to the double-acting cylinder seat plate by bolts.

[0009] Preferably, the connecting rod includes a connecting ear plate, a reinforcing transverse rib, a reinforcing vertical rib and a transfer ear plate, the two connecting ear plates are connected and fixed by the reinforcing transverse rib and the reinforcing vertical rib, and the transfer ear plate is inserted between the two connecting ear plates and fixed by welding.

[0010] Preferably, the reinforcing transverse ribs and the reinforcing vertical ribs form a rectangular support frame, which is arranged in the middle of the ear plate. A first pin hole is provided at one end of the connecting ear plate, and a process hole is provided at the other end. The adapter ear plate extends from the end with the process hole into between the two connecting ear plates.

[0011] Preferably, the adapter ear plate is provided with a second pin shaft hole, the second pin shaft hole is used for inserting the pin shaft of the cross ear plate, and the first pin shaft hole is used for inserting the pin shaft of the cylinder ear plate.

[0012] The beneficial effects of the utility model are:

[0013] The system pressure oil pushes the two piston rods of the double-acting oil cylinder to move left and right, realizing the left and right movement of the tire, which fully reduces the linkage mechanism of the tires on both sides, enhances the stability of rotation, and the torque during the rotation of the tires on both sides effectively enhances the strength of the structure, with simple design and cost saving;

[0014] The connecting rod is arranged on the extension line of the double-acting oil cylinder piston rod. Through the transition connection of the connecting rod, the rotational bending torque of the double-acting oil cylinder piston rod is greatly reduced, thereby improving the service life and stability performance of the double-acting oil cylinder. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The utility model is a structural schematic diagram of a double-acting steering system for an aerial work platform.

[0016] Figure 2 It is an assembly diagram of the utility model.

[0017] Figure 3 Schematic diagram of the connecting rod structure.

[0018] Figure 4 for Figure 3 main view.

[0019] Among them: steering axle 1; double-acting cylinder 2; connecting rod 3; connecting ear plate 3.1; first pin hole 3.1.1; process hole 3.1.2; reinforcing transverse rib 3.2; reinforcing vertical rib 3.3; transfer ear plate 3.4; second pin hole 3.4.1; cross ear plate 4; cross rib 5; wheel hub 6; double-acting cylinder seat plate 7; cylinder ear plate pin 8; cross ear plate pin 9; end ear plate 10; cross main pin 11; tire 12. DETAILED DESCRIPTION

[0020] See also Figure 1-4The utility model relates to a double-acting steering system for an aerial work platform, comprising a steering axle 1, a double-acting oil cylinder 2, a connecting rod 3, a cross lug plate 4, a cross lug 5 and a wheel hub 6. The double-acting oil cylinder 2 is fixed on the steering axle 1, and the left and right sides of the steering axle 1 are symmetrically hinged with cross lugs 5, the cross lug 5 is rotatably connected to the wheel hub 6 through a bearing, the cross lug 4 is fixedly connected to the cross lug 5, the left and right sides of the double-acting oil cylinder 2 are symmetrically provided with connecting rods 3, one end of the connecting rod 3 is hinged to two cross lug plates 4 arranged above and below, and the other end is hinged to the movable end of the double-acting oil cylinder 2.

[0021] The double-acting cylinder 2 is centrally arranged on one side of the front and rear sides of the steering axle 1. The steering axle 1 is provided with a double-acting cylinder seat plate 7 corresponding to the cylinder barrel of the double-acting cylinder 2. The cylinder barrel of the double-acting cylinder 2 is fixed to the double-acting cylinder seat plate 7 by bolts.

[0022] One end of the connecting rod 3 is hinged to the movable end of the double-acting cylinder 2 through the cylinder ear plate pin 8, and the other end of the connecting rod 3 is hinged to the cross ear plate 4 through the cross ear plate pin 9.

[0023] The left and right ends of the steering axle 1 are both provided with end ear plates 10 , and the two end ear plates 10 arranged up and down are hinged to the cross 5 through a cross kingpin shaft 11 .

[0024] The shaft end of the cross 5 is assembled with the wheel hub 6 through a bearing, and the tire 12 is sleeved and fixed on the wheel hub 6, so that the wheel hub 6 drives the tire 12 to rotate.

[0025] The connecting rod 3 includes a connecting ear plate 3.1, a reinforcing transverse rib 3.2, a reinforcing vertical rib 3.3 and an adapter ear plate 3.4. The two connecting ear plates 3.1 are connected and fixed by the reinforcing transverse rib 3.2 and the reinforcing vertical rib 3.3. The reinforcing transverse rib 3.2 and the reinforcing vertical rib 3.3 form a rectangular support frame. The rectangular support frame is arranged in the middle of the ear plate to strengthen the strength of the connecting rod 3. One end of the connecting ear plate 3.1 is provided with a first pin shaft hole 3.1.1, and the other end is provided with a process hole 3.1.2. The adapter ear plate 3.4 extends between the two connecting ear plates 3.1. The connecting ear plate 3.1 and the adapter ear plate 3.4 are fixed by welding. The process hole 3.1.2 is provided to increase the welding area between the connecting ear plate 3.1 and the adapter ear plate 3.4, thereby improving the strength of the connecting rod.

[0026] The transfer ear plate 3.4 is provided with a second pin shaft hole 3.4.1, the second pin shaft hole 3.4.1 is used for inserting the cross ear plate pin shaft 9, and the first pin shaft hole 3.1.1 is used for inserting the cylinder ear plate pin shaft 8.

[0027] The double-acting cylinder 2 generates left and right reciprocating motion through the pressure oil, which drives the left and right connecting rods 3 to reciprocate. The connecting rod 3 is hinged to the cross lug plate 4, and the cross lug plate 4 is welded to the cross 5. The cross 5 is subjected to lateral thrust to realize the rotation of the cross 5. The rotation angle is controlled by the stroke of the double-acting cylinder 2. The connecting rod is arranged on the extension line of the double-acting cylinder piston rod. Through the transition connection of the connecting rod 3, the rotational bending torsion of the double-acting cylinder piston rod is greatly reduced, thereby improving the service life and stability performance of the double-acting cylinder.

[0028] In addition to the above embodiments, the present invention also includes other implementation modes. Any technical solutions formed by equivalent transformation or equivalent replacement should fall within the protection scope of the claims of the present invention.

Claims

1. A double-acting steering system for an aerial work platform, characterized in that: It includes a steering axle, a double-acting cylinder, a connecting rod, a cross-shaped ear plate, a cross-shaped ear plate and a wheel hub. The double-acting cylinder is fixed on the steering axle. The left and right sides of the steering axle are symmetrically hinged with cross-shaped ears. The cross-shaped ears are rotatably connected to the wheel hub through a bearing. The cross-shaped ears are fixedly connected to the cross-shaped ears. Connecting rods are symmetrically provided on the left and right sides of the double-acting cylinder. One end of the connecting rod is hinged to two cross-shaped ear plates arranged upper and lower, and the other end is hinged to the movable end of the double-acting cylinder.

2. A double-acting steering system for an aerial work platform according to claim 1, characterized in that: One end of the connecting rod is hinged to the movable end of the double-acting cylinder through the cylinder ear plate pin, and the other end of the connecting rod is hinged to the cross ear plate through the cross ear plate pin; the left and right ends of the steering axle are both provided with end ear plates, and the two end ear plates arranged upper and lower are hinged to the cross through the cross main pin shaft.

3. A double-acting steering system for an aerial work platform according to claim 1, characterized in that: The double-acting oil cylinder is centrally arranged on one side of the front and rear sides of the steering axle, and the cylinder barrel of the steering axle corresponding to the double-acting oil cylinder is provided with a double-acting oil cylinder seat plate, and the cylinder barrel of the double-acting oil cylinder is fixed on the double-acting oil cylinder seat plate by bolts.

4. A double-acting steering system for an aerial work platform according to claim 1 or 2, characterized in that: The connecting rod comprises a connecting ear plate, a reinforcing transverse rib, a reinforcing vertical rib and a transfer ear plate. The two connecting ear plates are connected and fixed by the reinforcing transverse rib and the reinforcing vertical rib. The transfer ear plate is inserted between the two connecting ear plates and fixed by welding.

5. A double-acting steering system for an aerial work platform according to claim 4, characterized in that: The reinforcing transverse ribs and the reinforcing vertical ribs form a rectangular support frame, which is arranged in the middle of the ear plate. A first pin shaft hole is provided at one end of the connecting ear plate, and a process hole is provided at the other end. The adapter ear plate extends from the end with the process hole between the two connecting ear plates.

6. A double-acting steering system for an aerial work platform according to claim 5, characterized in that: The transfer ear plate is provided with a second pin shaft hole, the second pin shaft hole is used for inserting the pin shaft of the cross ear plate, and the first pin shaft hole is used for inserting the pin shaft of the cylinder ear plate.

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