Automatic positioning and lifting device for steel rail

Abstract

The utility model relates to hoisting technical field especially a kind of steel rail automatic positioning suction lifting device, including crane beam and hoisting permanent magnet device, hoisting permanent magnet device is fixed on crane beam by connecting pin shaft, four magnetic shafts are provided inside hoisting permanent magnet device side by side, adjustable positioning cone is installed at the bottom of the magnetic area of hoisting permanent magnet device.The utility model discloses a kind of steel rail automatic positioning suction lifting device using hoisting permanent magnet to suction lifting steel rail, magnetic force directly adsorbs steel rail surface, without physical contact, avoid to slip hidden danger;Through quick suction and release, worker manually adjusts clamp, and through remote control, it can complete adsorption operation, reduce manpower demand;Through adjustable positioning cone being installed at the bottom of the magnetic area of hoisting permanent magnet device, it can be compatible with different specifications steel rail, without replacing clamp parts;It is more energy-saving relative to traditional electromagnet, and maintenance cost is lower.

Description

Technical Field

[0001] This utility model relates to the field of lifting technology, and in particular to an automatic positioning and lifting device for steel rails. Background Technology

[0002] Steel rails are a core infrastructure of rail transit systems such as railways, subways, and trams. The efficiency of their laying, replacement, and maintenance directly affects transportation safety and operating costs. With the rapid development of high-speed railways and urban rail transit, the requirements for the efficiency, safety, and adaptability of steel rail hoisting technology are increasing.

[0003] Steel rails are heavy (e.g., a single 500-meter-long rail weighs over 30 tons) and relatively long, making the hoisting process complex, involving issues such as stability, collision prevention, and lifting equipment. Traditional methods rely on manual disassembly and assembly of lifting equipment, which is inefficient and poses significant safety hazards.

[0004] Currently, rail hoisting has a low level of automation and a high degree of reliance on manual labor. Hooking, alignment, and securing require multiple people working together, resulting in high labor intensity. Traditional clamp designs do not consider oil or frost on the rail surface, making rail slippage a risk. Traditional hoisting solutions are also difficult to adapt to different rail specifications, requiring frequent replacement of parts.

[0005] Currently, the most commonly used lifting rails on the market are lifting permanent magnets and lifting electromagnets. Lifting permanent magnets use a mechanical magnetic shielding method to shut off the permanent magnet magnetic field, i.e., a switching magnetic field type, and the shut-off process is continuous and controllable. Lifting electromagnets use the magnetic force generated by an internal iron core under the action of an energized coil to attract materials.

[0006] Compared to the two lifting methods, lifting electromagnets have more advantages, which are as follows:

[0007] 1. The lifting permanent magnet is energized when opening or closing the magnetic circuit, which takes a very short time, and is not energized during hoisting, so its power consumption is less than that of the lifting electromagnet; 2. The lifting electromagnet will not cause the material to fall due to current failure during the material suction process;

[0008] The existing technology for lifting permanent magnet devices (patent number: ZL201410326810.6) mentions that this utility model belongs to the category of lifting devices. It includes a permanent magnet box containing two rotating magnets driven by two shafts. The rotation of the two shafts opens and closes the permanent magnet circuit. The two shafts are arranged horizontally side-by-side, and transmission gears are installed at their ends. The drive gears are driven by a motor with a braking function, and the drive gears drive the two transmission gears to rotate synchronously in opposite directions through an intermediate gear. Using the above-mentioned patented structure to lift rails presents difficulties in placement and alignment, significant left-right imbalance forces, and a tendency to overturn during lifting. Furthermore, the number of rails that can be lifted is limited by the number of magnetic shafts. Therefore, there is an urgent need for a rail lifting technology with strong adaptability and high safety redundancy. Utility Model Content

[0009] The technical problem to be solved by this utility model is that the existing structure of suction and lifting steel rails is difficult to place and align, there is a large imbalance force on the left and right sides, it is easy to flip during suction and lifting, and the number of suction and lifting is limited by the number of magnetic shafts.

[0010] The technical solution adopted by this utility model to solve its technical problem is: an automatic positioning and lifting device for rails, including a lifting beam and a lifting permanent magnet device. The lifting permanent magnet device is fixed on the lifting beam by a connecting pin. Four magnetic shafts are arranged side by side inside the lifting permanent magnet device. An adjustable positioning cone is installed at the bottom of the magnetic zone of the lifting permanent magnet device.

[0011] The upper end of the lifting beam is fixedly connected to a gantry crane hook connecting pin.

[0012] The bottom of the magnetic zone of the lifting permanent magnet device is provided with a dovetail groove for installing and adjusting the adjustable positioning cone.

[0013] The adjustable positioning cone has lateral locking grooves on both sides, and the lateral locking grooves are threaded with fixing bolts.

[0014] The adjustable positioning cone has a dovetail structure at its upper end that matches the dovetail groove. The adjustable positioning cone is inserted laterally into the dovetail groove through the dovetail structure and connected to the bottom of the magnetic zone of the lifting permanent magnet device.

[0015] The beneficial effects of this utility model are:

[0016] (1) The automatic positioning and lifting device for rails of this utility model uses a lifting permanent magnet to lift the rails. The magnetic force directly adsorbs the surface of the rails without physical contact, thus avoiding the risk of slippage.

[0017] (2) Through rapid suction and release, the suction operation can be completed remotely without the need for workers to manually adjust the clamps, thus reducing the need for manpower.

[0018] (3) By installing an adjustable positioning cone at the bottom of the magnetic zone of the lifting permanent magnet device, it can be compatible with different specifications of rails without the need to replace the clamp components.

[0019] (4) It is more energy-efficient and has lower maintenance costs compared to traditional electromagnets. Attached Figure Description

[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is a structural schematic diagram of the lifting permanent magnet device in this utility model.

[0023] Figure 3 This is a schematic diagram of the adjustable positioning cone in this utility model.

[0024] Figure 4 This is a schematic diagram of the range of uniform suction and lifting along the horizontal direction of the magnetic axis in the lifting permanent magnet device of this utility model.

[0025] Figure 5 This is a schematic diagram of the horizontal suction and lifting range in this utility model. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0027] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5The automatic positioning and lifting device for rails shown includes a lifting beam 1 and a lifting permanent magnet device 2. The lifting permanent magnet device 2 is fixed to the lifting beam 1 by a connecting pin. Four magnetic shafts 3 are arranged side by side inside the lifting permanent magnet device 2. An adjustable positioning cone 4 is installed at the bottom of the magnetic area of ​​the lifting permanent magnet device 2, so that the rail is evenly lifted along the horizontal direction (longitudinal direction) of the magnetic shaft and directly below the magnetic shaft of the lifting permanent magnet device 2. Compared with lateral lifting, the lifting contact surface is increased, making the lifting performance stronger, more stable, and with a higher safety factor. The magnetic shaft is an existing technology. The opening and closing of the magnetic circuit is controlled by a motor to control the rotation of the shaft, thereby achieving the attraction and release of workpieces. The appropriate combination of lifting beam 1 and lifting permanent magnet device 2 is selected according to the weight and length of the object being lifted. The lifting permanent magnet device 2 is fixed to the lifting beam 1 by a connecting pin. The trolley hook is connected to the lifting beam 1. The trolley is controlled to slowly lower the lifting beam 1 to the upper surface of the rail. Taking advantage of the rail's narrow upper and wide lower structure, it is positioned below the lifting permanent magnet device 2, evenly isolating the rail in the area below the magnetic shaft. Then, the existing operation control system controls the adjustable positioning cone 4 to attract iron. At this time, the rails will be attracted and suspended in the area directly below the magnetic shaft. The trolley is operated to move upward. When the trolley is moved to the designated position, the operation control system causes the lifting permanent magnet device 2 to release the iron, completing the attraction and lifting.

[0029] The adjustable positioning cone 4 is a cone structure made of non-magnetic material.

[0030] The upper end of the lifting beam 1 is fixedly connected to the gantry crane hook connecting pin 5.

[0031] The bottom of the magnetic zone of the lifting permanent magnet device 2 is provided with a dovetail groove 6 for installing and adjusting the adjustable positioning cone 4.

[0032] The adjustable positioning cone 4 has lateral locking grooves 7 on both sides, and the lateral locking grooves 7 are threaded with fixing bolts 8.

[0033] The adjustable positioning cone 4 has a dovetail structure 41 at its upper end that matches the dovetail groove 6. The adjustable positioning cone 4 is inserted laterally into the dovetail groove 6 through the dovetail structure 41 and connected to the bottom of the magnetic zone of the lifting permanent magnet device 2.

[0034] By changing the adjustable positioning cone 4 of different specifications or the distance between the adjustable positioning cones 4, rails of different specifications can be separated and lifted.

[0035] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. An automatic positioning and lifting device for steel rails, comprising a lifting beam (1) and a lifting permanent magnet device (2), characterized in that: The lifting permanent magnet device (2) is fixed to the lifting beam (1) by connecting pins. Four magnetic shafts (3) are arranged side by side inside the lifting permanent magnet device (2). An adjustable positioning cone (4) is installed at the bottom of the magnetic zone of the lifting permanent magnet device (2).

2. The automatic positioning and lifting device for rails according to claim 1, characterized in that: The upper end of the lifting beam (1) is fixedly connected with a crane hook connecting pin (5).

3. The automatic rail positioning and lifting device according to claim 1, characterized in that: The bottom of the magnetic zone of the lifting permanent magnet device (2) is provided with a dovetail groove (6) for installing and adjusting the adjustable positioning cone (4).

4. The automatic positioning and lifting device for rails according to claim 1, characterized in that: The adjustable positioning cone (4) has lateral locking grooves (7) on both sides, and the lateral locking grooves (7) are threaded with fixing bolts (8).

5. The automatic positioning and lifting device for rails according to claim 3, characterized in that: The adjustable positioning cone (4) has a dovetail structure (41) at its upper end that matches the dovetail groove (6). The adjustable positioning cone (4) is inserted laterally into the dovetail groove (6) through the dovetail structure (41) and connected to the bottom of the magnetic zone of the lifting permanent magnet device (2).

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