Railway wagon wheelset changing steering device

Abstract

The utility model discloses a railway freight car replaces wheel pair steering gear, base is made of channel steel, and the bottom of channel steel is provided with the matching recess of steel rail, and the base can be stably straddled on two steel rails, support seat, support seat is rotatably connected on base through pivot pin, guide rail, a pair of guide rail symmetry sets up at the both sides of support seat, and guide rail adopts collapsible design, and realizes folding function through hinge connection, connecting rod, connecting rod sets up between guide rail, is used for adjusting and fixing the width of both sides guide rail, stop piece, stop piece sets up at the end of guide rail, is used for limiting the position of wheel pair. The utility model discloses convenient operation can cross multiple tracks and transport wheel pair, adapts complex on -the -spot environment, and wheel pair will not be inclined or fall in the transportation process, effectively improves operation safety, can cross multiple tracks and transport wheel pair quickly and safely, shortens the time of replacing wheel pair, reduces the labor intensity of worker, improves work efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of railway freight car maintenance equipment, and belongs to the auxiliary device for changing wheelsets of railway freight cars, especially the steering device for changing wheelsets of railway freight cars. Background Technology

[0002] Railway freight car depots face numerous technical challenges when performing wheelset replacement operations, especially in electrified railway sections.

[0003] Traditional wheel-changing operations primarily rely on wheel-changing carts, but existing technology suffers from the following problems: First, the uncertainty of wheel-changing locations prevents carts from arriving in a timely manner, especially in electrified sections where carts lack the ability to transport wheelsets across tracks. Second, wheelsets are heavy, making manual handling labor-intensive and posing safety hazards, easily leading to injuries or wheelsets falling off. Third, the inability of wheel-changing carts to arrive promptly increases the need for manual wheel-changing, further complicating on-site wheelset transportation.

[0004] Furthermore, using cranes for wheelset replacement also has many drawbacks: crane use is limited and operation is inconvenient in electrified sections or complex site environments. Although road transport offers high mobility and can save transportation time, cranes are limited in certain environments.

[0005] Existing wheel-changing carts typically employ a multi-box structure design, but in practical applications, they still suffer from problems such as space limitations, electromagnetic interference, operational complexity, and design limitations. These problems directly or indirectly lead to technical defects such as high cost, low efficiency, and long processing time. Summary of the Invention

[0006] The purpose of this utility model is to provide a steering device for changing wheelsets in railway freight cars. It is easy to operate, can transport wheelsets across multiple tracks, adapts to complex on-site environments, and ensures that the wheelsets will not tilt or fall off during transportation, effectively improving operational safety. It can quickly and safely transport wheelsets across multiple tracks, shorten the time for changing wheelsets, reduce the labor intensity of workers, and improve work efficiency.

[0007] To solve the above-mentioned technical problems, this utility model provides a railway freight car wheelset changing and steering device, comprising: a base, the base being made of channel steel, the bottom of the channel steel having a groove matching the rail, the base being able to be stably straddling two rails; a support seat, the support seat being rotatably connected to the base via a pivot pin; guide rails, a pair of guide rails being symmetrically arranged on both sides of the support seat, the guide rails being foldable and connected by hinges to achieve the folding function; a connecting rod, the connecting rod being disposed between the guide rails, for adjusting and fixing the width of the guide rails on both sides; and a stop, the stop being disposed at the end of the guide rails, for limiting the position of the wheelset; wherein, the support seat is able to rotate relative to the base in a horizontal plane, allowing the guide rails to switch between two positions: perpendicular to the rails and parallel to the rails.

[0008] Furthermore, the depth of the channel steel groove of the base matches the height of the rail, ensuring that the base can be stably mounted on the rail.

[0009] Furthermore, a bearing is installed in the middle of the support base, and a pivot pin is installed in the middle of the base. The bearing and the pivot pin cooperate to realize the rotation of the support base relative to the base. The bearing between the support base and the base is used to reduce rotational friction.

[0010] Furthermore, the guide wheel rail includes a fixed section and a folding section. The fixed section is fixedly connected to the support base by a connecting screw, and the folding section is connected to the fixed section by a hinge.

[0011] Furthermore, the connecting rod includes a screw connector, the length of which is adjustable to accommodate rail spacing of different widths.

[0012] Furthermore, the stop includes a stop iron disposed at the end of the guide wheel rail and a limiting stop for restricting the lateral movement of the guide wheel rail.

[0013] Furthermore, a stop iron is welded to the inner side of the front end of the guide wheel rail. When the guide wheel rail rotates to be parallel with the steel rail, the stop iron can contact the steel rail to fix the guide wheel rail.

[0014] Furthermore, the folding section of the guide wheel rail can be folded upward relative to the fixed section, making it convenient to carry and store the device.

[0015] Furthermore, the support base has grooves at both ends, and the guide wheel rail is fixed in the grooves by welding.

[0016] Furthermore, all components are made of channel steel to ensure that the device has sufficient load-bearing capacity and structural strength.

[0017] Working principle: In its specific implementation, this invention first involves vertically mounting the base onto two steel rails. Two guide rails are then connected to the support base via threaded connecting rods and rest on the base. Next, the guide rails are rotated to be parallel to the base (perpendicular to the rail surface), with one end of the guide rail resting on the ground. The wheelset is then transported along the guide rails to the center position of the two steel rails (at the stop). Finally, the device is rotated so that the two guide rails are parallel to the rail surface and rest on it, thereby transporting the wheelset along the guide rails onto the two steel rails, thus achieving wheelset transport.

[0018] The specific steps for replacing wheelsets using this invention are as follows: Step 1: Positioning the device. Place the base vertically on the two steel rails, ensuring that the groove of the channel steel fits perfectly with the rails.

[0019] Step 2: Unfold the guide rail. Unfold the folded guide rail, adjust it to the appropriate width using the connecting rod, and ensure a secure connection.

[0020] Step 3: Wheelset loading. Push the wheelset along the guide rail from the ground to the center of the device until it contacts the limit stop and the stop iron.

[0021] Step 4: Rotate the device to turn the support base so that the entire device rotates 90 degrees, making the guide wheel rail parallel to the steel rail.

[0022] Step 5: Wheelset unloading. Push the wheelset from the guide rail onto the rail to complete the wheelset replacement operation.

[0023] Compared with the prior art, the present invention has the following beneficial effects: Lightweight and easy to operate: The tool has a lightweight overall structure, making it easy for on-site operators to use and significantly reducing labor intensity; High stability: The stability and safety of the device are ensured by the cooperation between the groove of the base channel steel and the steel rail; Cross-track transportation capability: The equipment can cross multiple tracks for wheelset transportation, adapting to complex field environments; Low cost: The use of standardized channel steel materials reduces manufacturing and maintenance costs; Enhanced safety: The stability of the device ensures that the wheelset will not tilt or fall off during transportation, effectively improving operational safety; Improve emergency response efficiency: Enables rapid and safe transport of wheelsets across multiple tracks, reducing wheelset replacement time; Portability: The foldable design makes it easy to carry and store, and is suitable for emergency use on site.

[0024] This invention solves several technical problems in traditional wheelset replacement operations through innovative structural design. The device is lightweight, allowing for setup and operation by a single operator. Smooth rotation is achieved through bearing connections, significantly reducing the workload of operators.

[0025] The device's foldable design makes it easy to carry and store, making it particularly suitable for on-site emergency repair work. Standardized material selection and a simple structure ensure the device's reliability and durability, while also reducing manufacturing and maintenance costs.

[0026] The railway freight car wheelset changing and steering device provided by this utility model effectively solves the problems of difficult wheelset transportation, complex operation, and poor safety in existing technologies through innovative structural design. The device has the advantages of simple structure, convenient operation, safety and reliability, and low cost, and is particularly suitable for use in electrified railway sections and complex field environments, and has broad prospects for promotion and application. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of the present invention in a parallel state with the rail; Figure 2 for Figure 1 Top view; Figure 3 for Figure 1 Side view; Figure 4 This is a three-dimensional structural diagram of the present invention in a state perpendicular to the rail.

[0028] The markings in the diagram are as follows: 1-base, 2-support seat, 3-rotating pin, 4-guide wheel rail, 5-limit stop, 6-connecting screw, 7-hinge, 8-connecting rod, 9-stop iron. Detailed Implementation

[0029] The specific embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0030] Replacement of wheelset steering system in railway freight cars, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, it mainly consists of a base 1, a support 2, a guide rail 4, a hinge 7, and a connecting rod 8. All components are made of channel steel to ensure that the device has sufficient load-bearing capacity and structural strength. The specifications of the channel steel can be selected according to the actual application scenario. For example, standard channel steel models such as 10# or 12# channel steel can be used, with the material being Q235A or higher strength structural steel, to meet different load requirements.

[0031] The base 1 uses channel steel as its base material, and the bottom of the channel steel has a groove that matches the size of the rail. The depth and width of the groove should match the size of the standard rail to ensure that the base can be stably locked onto the rail and prevent slippage or displacement. Specifically, the groove depth can be 1.1 to 1.2 times the height of the rail, and the groove width is slightly larger than the top width of the rail to provide adequate clearance for installation. The length of the base 1 should be sufficient to span two rails, typically 1.4 meters to 2 meters, depending on the rail spacing. The thickness of the channel steel in the base 1 is preferably 8 mm to 12 mm to ensure overall rigidity and durability.

[0032] The support base 2 is also made of channel steel, and its length is similar to or slightly shorter than that of the base 1, ranging from 1.5 meters to 1.8 meters. The support base 2 is rotatably connected to the base 1 via a pivot pin 3. Specifically, a bearing (e.g., a rolling bearing or a sliding bearing) is installed in the middle of the support base 2, and the pivot pin 3 is fixed in the middle of the base 1. The diameter of the pivot pin 3 matches the inner bore of the bearing; for example, a steel pivot pin with a diameter of 30mm to 50mm, made of 45# steel and heat-treated to improve wear resistance, is used. The bearing selection should consider load-bearing capacity and smooth rotation, for example, using deep groove ball bearings (such as the 6205 or 6206 series) or tapered roller bearings. A shim or lubrication device (such as a grease fitting) can also be placed between the support base 2 and the base 1 to further reduce rotational friction.

[0033] The guide rail 4 consists of a pair of symmetrically arranged rails, each guide rail 4 including a fixed section and a folding section. The fixed section is fixedly connected to the support base 2 by a connecting screw 6. The connecting screw 6 can pass through the mounting hole on the support base 2 and be tightened by a nut (such as an M16 or M20 nut). The folding section is connected to the fixed section by a hinge 7, allowing the folding section to fold upward relative to the fixed section. The hinge 7 can be a heavy-duty hinge, such as a stainless steel hinge (material: 304 stainless steel), with dimensions of 100mm × 80mm, to ensure durability and corrosion resistance. The length of the guide rail 4 should be designed according to the needs of wheelset transportation, with a fixed section length of 0.92 meters, a folding section length of 0.9 meters, and a total length of 1.82 meters, to accommodate the transition from the ground to the rail. The cross-sectional shape of the guide rail 4 is a groove shape with a depth of 100mm to 150mm to provide sufficient guidance and support.

[0034] The connecting rod 8 is positioned between the two guide rails 4 and is used to adjust and fix the width of the guide rails 4. The connecting rod 8 may include a screw connector, such as a double-acting screw or a telescopic rod, and its length is adjusted by rotating the screw. Both ends of the connecting rod 8 can be hinged to the guide rails 4 to accommodate rotational movement. The length adjustment range of the connecting rod 8 should be able to accommodate different rail gauges, for example, from a standard gauge of 1300mm to a wide gauge of 1500mm. The screw thread specification can be M20×1.5, and the adjustment stroke is 200mm to 300mm.

[0035] The stop components include a stop iron 9 and a limiting stop 5 disposed at the end of the guide wheel rail 4. The stop iron 9 is welded to the inner front end of the guide wheel rail 4. When the guide wheel rail 4 rotates to be parallel with the steel rail, the stop iron 9 can contact the steel rail, thereby fixing the guide wheel rail 4. The limiting stop 5 can be disposed on the side of the guide wheel rail 4 to limit the lateral movement of the wheelset during transportation. The stop iron 9 can be made of steel plate with a thickness of 10mm to 20mm and a height of 50mm to 80mm to ensure sufficient strength. The limiting stop 5 can be an adjustable bolt stop, locked to the guide wheel rail 4 by a nut.

[0036] During assembly, first place the base 1 on the rail, ensuring a tight fit between the groove and the rail. Then install the support 2, fitting the bearing onto the pivot pin 3 and ensuring smooth rotation. Next, fix the fixed section of the guide wheel rail 4 to the support 2 using the connecting bolt 6, and install the connecting rod 8. Finally, install the stop and hinge 7 to complete the assembly. All welded parts should use continuous welds with a weld height of not less than 4mm to ensure structural strength.

[0037] In use, place the device on the rail, unfold the guide rail 4, adjust the connecting rod 8 to a suitable width, then push the wheelset along the guide rail 4 to the center position, rotate the support base 2 to make the guide rail 4 parallel to the rail, and finally push the wheelset onto the rail. The whole operation is simple and quick, and can be completed by one person.

[0038] The device of this invention, through reasonable design and material selection, achieves a lightweight, stable, and safe wheelset replacement operation. In alternative embodiments, as described in the specification, other materials or connection methods may be used, but these modifications should all fall within the protection scope of this invention.

[0039] The above description is only a preferred embodiment of the present utility model. Those skilled in the art can make various modifications and improvements under the guidance of the present utility model without departing from its spirit, and these should all be included within the protection scope of the present utility model.

Claims

1. A railway freight car wheelset steering device, characterized in that, include: The base (1) is made of channel steel, and the bottom of the channel steel is provided with a groove that matches the rail. The base (1) can be stably straddled on two rails. Support base (2), which is rotatably connected to the base (1) by a pivot pin (3); Guide rail (4), a pair of guide rails are symmetrically arranged on both sides of the support base (2). The guide rails adopt a foldable design and are connected by hinges (7) to realize the folding function. Connecting rod (8), the connecting rod is disposed between the guide wheel rails, and is used to adjust and fix the width of the guide wheel rails on both sides; A stop member is disposed at the end of the guide wheel rail to limit the position of the wheelset; The support base (2) is rotatable in the horizontal plane relative to the base (1), so that the guide wheel rail can switch between two positions: perpendicular to the rail and parallel to the rail.

2. The railway freight car wheelset changing and steering device according to claim 1, characterized in that, The depth of the channel steel groove of the base (1) matches the height of the rail, ensuring that the base can be stably mounted on the rail.

3. The railway freight car wheelset changing and steering device according to claim 1, characterized in that, A bearing is installed in the middle of the support base (2), and a pivot pin (3) is installed in the middle of the base (1). The bearing and the pivot pin (3) cooperate to realize the rotation of the support base (2) relative to the base (1). The bearing between the support base (2) and the base (1) is used to reduce rotational friction.

4. The railway freight car wheelset changing and steering device according to claim 1, characterized in that, The guide rail (4) includes a fixed section and a folding section. The fixed section is fixedly connected to the support base (2) by a connecting screw (6), and the folding section is connected to the fixed section by a hinge (7).

5. The railway freight car wheelset changing and steering device according to claim 1, characterized in that, The connecting rod (8) includes a screw connector, the length of which can be adjusted to accommodate rail spacing of different widths.

6. The railway freight car wheelset changing and steering device according to claim 1, characterized in that, The stop includes a stop iron (9) disposed at the end of the guide wheel rail and a limiting stop (5) for restricting the lateral movement of the guide wheel rail.

7. The railway freight car wheelset changing and steering device according to claim 6, characterized in that, A stop iron (9) is welded to the inner side of the front end of the guide wheel rail. When the guide wheel rail rotates to be parallel with the steel rail, the stop iron (9) can contact the steel rail to fix the guide wheel rail.

8. The railway freight car wheelset changing and steering device according to claim 1, characterized in that, The folding section of the guide wheel rail can be folded upward relative to the fixed section, making it easy to carry and store the device.

9. The railway freight car wheelset changing and steering device according to claim 1, characterized in that, The support base (2) has grooves at both ends, and the guide wheel rail is fixed in the grooves by welding.

10. The railway freight car wheelset changing and steering device according to any one of claims 1-9, characterized in that, All components are made of channel steel to ensure that the device has sufficient load-bearing capacity and structural strength.

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