Wheel set with fixed mandrel structure

Abstract

The utility model belongs to the wheel group field of transfer storage equipment, relates to a wheel group of fixed mandrel structure can improve the adaptability and stability, reliability of wheel group. Technical scheme includes: fixed mandrel and wheel group. The fixed mandrel is round axle. Two ends of fixed mandrel each fixedly sheathed have a wheel group. The wheel group still includes: steel ring, conical roller bearing and brake assembly. The steel ring is annular structure, is provided with tire outside the steel ring. The inner side of steel ring is fixedly connected with the outer ring of conical roller bearing, and the inner ring of conical roller bearing is fixedly connected with fixed mandrel. The brake assembly is including hydraulic friction shoe, is fixed with brake assembly on the fixed mandrel of conical roller bearing from the fixed mandrel center in the steel ring inside, and in the braking process, the hydraulic friction shoe of brake assembly forms the friction with steel ring.

Description

Technical Field

[0001] This utility model belongs to the field of wheel sets for transfer and storage equipment, and relates to a wheel set with a fixed spindle structure. Background Technology

[0002] In the field of transfer and storage equipment, there are strict requirements for the reliability, stability, braking performance, and maintainability of transport vehicles. Typically, the load capacity is required to be 2 to 3 times the vehicle's own weight, and stable operation is necessary under extreme conditions such as unpaved roads and extreme temperatures. This places high demands on the wheel sets, the core components responsible for the equipment's operation. Currently widely used wheel set structures employ a bearing- and brake-separated design, whose reliability and stability cannot meet the design requirements of transfer and storage equipment wheel sets. Utility Model Content

[0003] To overcome the shortcomings of the aforementioned related technologies, this utility model proposes a wheelset with a fixed spindle structure, which can improve the adaptability, stability, and reliability of the wheelset.

[0004] To achieve the above technical objectives, this utility model provides a wheel assembly with a fixed spindle structure. The wheel assembly with the fixed spindle structure includes a centering spindle and wheel assemblies. The centering spindle is a round shaft. A wheel assembly is fixedly mounted at each end of the centering spindle.

[0005] The wheelset further includes a steel rim, a tapered roller bearing, and a brake assembly. The steel rim is annular, with a tire mounted on its outer side. The inner side of the steel rim is fixedly connected to the outer ring of the tapered roller bearing, and the inner ring of the tapered roller bearing is fixedly connected to a centering shaft. The brake assembly includes hydraulic friction pads, and is fixed from the centering shaft inside the steel rim to the centering shaft of the tapered roller bearing. During braking, the hydraulic friction pads of the brake assembly generate friction with the steel rim.

[0006] Preferably, each end of the centering shaft is fixed with a brake mounting component, which is a plate and perpendicular to the centering shaft.

[0007] The brake assembly also includes a fixed housing and hydraulic components. The fixed housing includes a fixed disc and a support tube. The fixed disc is a circular structure with a central through hole. The centering shaft passes through the through hole of the fixed disc, and the fixed disc is fixedly connected to the centering shaft via a corresponding brake mounting component. The support tube is a cylindrical tube, and the centerline of the support tube is collinear with the centerline of the through hole of the fixed disc. The support tube is fixedly connected to the fixed disc and is located on the side of the fixed disc away from the brake mounting component.

[0008] Multiple hydraulic components are uniformly fixed on the outer wall of the support tube. Each hydraulic component has a hydraulic friction pad fixed at its piston end. When the hydraulic component extends, the hydraulic friction pad forms relative friction with the inner wall of the steel ring.

[0009] Preferably, an annular connector is fixed on the inner wall of the steel ring. The annular connector is an annular plate, and the center line of the annular connector is collinear with the center line of the steel ring.

[0010] The wheelset also includes a connector, which comprises a bearing sleeve, an outer sleeve, and a connecting ring. The bearing sleeve is a cylindrical tube, and its inner wall is fixedly connected to the inner ring of the tapered roller bearing. The outer sleeve is a circular tube, and its centerline is collinear with that of the bearing sleeve. The outer sleeve extends to the corresponding position of the brake assembly. When the hydraulic component extends, the hydraulic friction pad is in contact with the inner wall of the outer sleeve. The bearing sleeve is fixedly connected to the outer sleeve via the connecting ring.

[0011] The connecting ring is an annular plate parallel to the annular connector. The position of the connecting ring is adapted to the annular connector. The annular connector fits into the connecting ring and is fixedly connected by bolts.

[0012] Preferably, a support seat is also fixed on the centering shaft inside the two wheelsets, and the support seat is configured to be fixedly connected to the frame.

[0013] The beneficial effects of this utility model are as follows:

[0014] 1. This utility model installs and connects the centering shaft, steel ring, tapered roller bearing and brake assembly as individual components, which can improve the load-bearing capacity, driving stability and braking effect of the wheelset, and avoid the disadvantages of separate component assembly such as complicated assembly, small performance improvement space and inability to uniformly manage the quality of key components.

[0015] 2. The length of the centering shaft can be determined according to the frame structure, which makes the present invention highly adaptable and can be matched with frames of different specifications. This broadens the design ideas of transfer and storage equipment and promotes the modular, serialized and standardized research and production of such equipment.

[0016] 3. By integrating key components of the wheelset into a single unit, installation difficulty is reduced, safety hazards caused by differences in the number of parts and assembly techniques are eliminated, the manufacturing and installation efficiency of core components is improved, and product manufacturing costs are optimized. Simultaneously, maintenance cycles are shortened, wheelset lifespan is extended, and stable operation is ensured under bumpy conditions and extreme high and low temperature conditions. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a front view of the structure of this utility model;

[0020] Figure 3 This is a side view of the centering shaft, support seat, and brake mounting component of this utility model.

[0021] Figure 4 This is a cross-sectional view of the centering shaft of this utility model;

[0022] Figure 5 This is a structural diagram of the support base of this utility model;

[0023] Figure 6 The present invention provides a structural diagram and a perspective view of the connector of this utility model.

[0024] Figure 7 This is a structural diagram and sectional view of the wheel assembly of this utility model. Detailed Implementation

[0025] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] like Figures 1 to 7 As shown, a wheel assembly 2 with a fixed spindle structure includes: a centering spindle 1 and wheel assemblies 2. The centering spindle 1 is a round shaft. A wheel assembly 2 is fixedly mounted at each end of the centering spindle 1.

[0029] The wheel assembly 2 further includes a steel rim 21, a tapered roller bearing 22, and a brake assembly 23. The steel rim 21 has an annular structure, with a tire mounted on its outer side. The inner side of the steel rim 21 is fixedly connected to the outer ring of the tapered roller bearing 22, and the inner ring of the tapered roller bearing 22 is fixedly connected to a centering shaft 1. The brake assembly 23 includes hydraulic friction pads. The brake assembly 23 is fixed from the center of the centering shaft 1 located inside the steel rim 21 to the centering shaft 1 of the tapered roller bearing 22. During braking, the hydraulic friction pads of the brake assembly 23 generate friction with the steel rim 21.

[0030] Each end of the centering shaft 1 is fixed with a brake mounting component 24, which is a plate and is perpendicular to the centering shaft 1.

[0031] Brake mounting component 24 is positioned and welded according to the frame structure and specifications, and can be matched with frames of different specifications. The tires support the movement mechanism and have braking function.

[0032] The centering shaft 1 includes: a shaft head 11, a shaft tube 12, and an anti-shear pin. The shaft tube 12 has mounting holes for the shaft head 11 at both ends, and is press-fitted to the shaft head 11 before circumferential welding to ensure the load-bearing capacity and stability of the wheel set 2 under bumpy conditions. The anti-shear pin penetrates the shaft head 11 and the shaft tube 12, resisting the combined torque and bending stress on the centering shaft 1, and providing structural reinforcement at the stress peak location. The fixed support 32 can have its bearing surface and mating hole positions determined according to the upper mounting structure.

[0033] A support seat 3 is also fixed on the centering shaft 1 inside the two wheelsets 2, and the support seat 3 is configured to be fixedly connected to the frame.

[0034] The support base 3 includes: a fixed support plate 31, a U-bolt 32, and a nut. The support base 3 is assembled with load-bearing structures such as the vehicle frame, and this structure can be matched with various load-bearing frames.

[0035] Each end of the centering shaft 1 is fixed with a brake mounting component 24, which is a plate and is perpendicular to the centering shaft 1.

[0036] The brake assembly 23 further includes a fixed housing and hydraulic components. The fixed housing includes a fixed disc and a support tube. The fixed disc is a disc structure with a central through hole. The centering shaft 1 passes through the through hole of the fixed disc, and the fixed disc is fixedly connected to the centering shaft 1 through a corresponding brake mounting component 24. The support tube is a cylindrical tube, and the centerline of the support tube is collinear with the centerline of the through hole of the fixed disc. The support tube is fixedly connected to the fixed disc and is located on the side of the fixed disc away from the brake mounting component 24.

[0037] Multiple hydraulic components are uniformly fixed on the outer wall of the support tube. Each hydraulic component has a hydraulic friction pad fixed at its piston end. When the hydraulic component extends, the hydraulic friction pad forms relative friction with the inner wall of the steel ring 21.

[0038] An annular connector 3 is fixed on the inner wall of the steel ring 21. The annular connector 3 is an annular plate, and the center line of the annular connector 3 is collinear with the center line of the steel ring 21.

[0039] The wheel assembly 2 also includes a connector 3, which includes a bearing sleeve, an outer sleeve, and a connecting ring. The bearing sleeve is a cylindrical tube, and its inner wall is fixedly connected to the inner ring of the tapered roller bearing 22. The outer sleeve is a circular tube, and its center line is collinear with that of the bearing sleeve. The outer sleeve extends to the corresponding position of the brake assembly 23. When the hydraulic component extends, the hydraulic friction pad is in contact with the inner wall of the outer sleeve. The bearing sleeve is fixedly connected to the outer sleeve through the connecting ring.

[0040] The connecting ring is an annular plate parallel to the annular connector 3. The position of the connecting ring is adapted to the annular connector 3. The annular connector 3 fits into the connecting ring and is fixedly connected by bolts.

[0041] The brake mounting component 24 and the steel rim 21 form a space for the installation of the brake assembly 23. The brake assembly 23 is fixedly installed on its inner side by bolts. The brake assembly 23 is a hydraulic friction pad braking structure. It works with the connecting component 3 to generate braking force. This braking structure is responsive, has strong braking force and good handling, so that the wheelset 2 has good braking ability under working conditions such as flat roads, slopes and bumpy roads.

[0042] The centering shaft 1, tapered roller bearing 22, round nut, and locking washer are assembled to form the inner ring structure of wheel set 2. The inner ring structure of wheel set 2 uses tapered roller bearing 22 as the core connecting component 3. The inner ring of tapered roller bearing 22 is interference-fitted with the centering shaft 1, and the outer ring of tapered roller bearing 22 is interference-fitted with the bearing sleeve of connecting component 3. External threads and locking washer mounting grooves are machined at the shaft end 11. After the tapered roller bearing 22 is installed and adjusted, the locking washer is installed and the round nut is tightened. The locking washer's locking plate is bent and pressed tightly against the outer surface of the nut to lock the nut, thus fixing the bearing inner ring and ensuring stable and smooth rotation. The inner ring structure of wheel set 2 can simultaneously bear axial and circumferential forces, providing high support force and a certain value of lateral force for the equipment's load-bearing structure, ensuring the stability of the equipment during straight-line and turning travel under load.

[0043] Tapered roller bearings 22 are arranged on both sides of the steel ring 21 to meet the circumferential and axial stress requirements of the wheel axle. Smooth rotation of the wheel assembly 2 is ensured by adjusting the bearing clearance. An anti-loosening adjustment mechanism is installed at the axle head 11. The anti-loosening adjustment mechanism includes a clearance adjusting washer set 12 and cotter pins. After the tapered roller bearings 22, connecting parts 3, round nuts, and locking washers are assembled, the bearing clearance is adjusted to ensure smooth rotation of the steel ring 21. The clearance spacing is fixed by installing the appropriate number of clearance adjusting washers 12 according to the clearance installation. This structure allows the wheel assembly 2 to rotate flexibly without jamming, while simultaneously securing the bearing mounting components on both sides, ensuring the operational stability of the wheel assembly 2. Bearing end caps and dustproof inner covers are installed on the inner and outer sides of the tapered roller bearings 22 to protect the sealed space within the mounting cavity of the tapered roller bearings 22, preventing leakage of high and low temperature lubricating oil and intrusion of impurities, thus protecting the normal operation of the wheel assembly 2 under high and low temperature conditions. The inner ring structure, outer ring structure, and braking mechanism of wheelset 2 are connected and contacted through connector 3, completing the integrated design of the motion structure components of wheelset 2, which improves the running stability, adaptability and installation of wheelset 2.

[0044] like Figure 3 As shown, the connecting component 3, multi-claw anti-loosening washer 5, steel ring 21, hexagonal bolt, and nut are connected and assembled to form a rotating outer ring structure. This rotating structure uses the connecting component 3 as its core component. The connecting component 3 corresponds to the bolt holes of the steel ring 21, and is fixed by hexagonal bolts and nuts. After the nut presses against the multi-claw anti-loosening washer 5, the multi-claw washer's stop plate bends and tightly adheres to the outer surface of the nut to lock the nut, thus preventing loosening. This rotating outer ring structure is reliable, highly integrated, and easy to assemble, improving the mechanical performance of the equipment while reducing installation time and difficulty.

[0045] This utility model provides a wheel set 2 with the above-mentioned fixed spindle 1 structure. The specific operation steps are as follows:

[0046] S1: Determine the length of the axle tube 12 according to the matching transfer and storage equipment frame, and complete the fabrication of the centering shaft 1 by matching the axle head 11, axle tube 12, anti-shear pin, and brake mounting part 24;

[0047] S2: Determine the mounting hole position and the distance between the two sides of the support seat 3 according to the frame installation position, weld and fix it to the centering shaft 1, and connect and tighten the brake assembly 23 and the brake mounting part 24 with bolts.

[0048] S3: Connector 3 and steel ring 21 are installed by internal hex bolts, nuts, and multi-claw anti-loosening washers 5. The bent multi-claw washers and stop plates are used to tighten the nuts.

[0049] S4: The dustproof inner cover is assembled with the connecting part 3, the inner ring of the tapered roller bearing 22 is interference-fitted with the centering shaft 1, and the outer ring is interference-fitted with the connecting part 3.

[0050] S5: The tapered roller bearing 22 is installed on the outside, the inner ring is interference-fitted with the centering shaft 1, the outer ring is interference-fitted with the connecting piece 3, and the clearance and gap are adjusted.

[0051] S6: Install the locking washer and tighten the round nut. Bend the locking washer's locking plate to lock the nut tightly against its outer surface. Install the clearance adjusting washer assembly 12 and the cotter pin on the outside of the round nut.

[0052] S7: Inject high and low temperature lubricating grease into the bearing mounting cavity and adjust wheel set 2. Install the bearing end cover. Secure the transport and storage load-bearing structure using U-bolts 32 and nuts.

[0053] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0054] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A wheel assembly with a fixed spindle structure, characterized in that, include: A centering shaft, wherein the centering shaft is a circular shaft; The wheel assembly has a wheel assembly fixedly mounted on each end of the centering shaft; The wheel set also includes: A steel rim, wherein the steel rim has a ring structure and a tire is provided on the outer side of the steel rim; A tapered roller bearing, wherein the inner side of the steel ring is fixedly connected to the outer ring of the tapered roller bearing, and the inner ring of the tapered roller bearing is fixedly connected to the centering shaft; A braking assembly, comprising a hydraulic friction pad, is fixed on a centering shaft located inside a steel ring and extending to a centering shaft of a tapered roller bearing. During braking, the hydraulic friction pad of the braking assembly rubs against the steel ring.

2. The wheel assembly with a fixed spindle structure according to claim 1, characterized in that, Each end of the centering shaft is fixed with a brake mounting component, which is a plate and perpendicular to the centering shaft. The braking components also include: A fixed housing includes a fixed disc and a support tube. The fixed disc is a disc structure with a central through hole. The centering shaft passes through the through hole of the fixed disc, and the fixed disc is fixedly connected to the centering shaft through a corresponding brake mounting component. The support tube is a cylindrical tube, and the center line of the support tube is collinear with the center line of the through hole of the fixed disc. The support tube is fixedly connected to the fixed disc, and the support tube is located on the side of the fixed disc away from the brake mounting component. The hydraulic components are evenly fixed on the outer wall of the support tube. Each hydraulic component has a hydraulic friction pad fixed at its piston end. When the hydraulic component extends, the hydraulic friction pad forms relative friction with the inner wall of the steel ring.

3. The wheel assembly with a fixed spindle structure according to claim 2, characterized in that, An annular connector is fixed on the inner wall of the steel ring. The annular connector is an annular plate, and the center line of the annular connector is collinear with the center line of the steel ring. The wheelset also includes a connector, which includes a bearing sleeve, an outer sleeve, and a connecting ring. The bearing sleeve is a cylindrical tube, and its inner wall is fixedly connected to the inner ring of the tapered roller bearing. The outer sleeve is a circular tube, and its centerline is collinear with that of the bearing sleeve. The outer sleeve extends to the corresponding position of the brake assembly. When the hydraulic component extends, the hydraulic friction pad fits against the inner wall of the outer sleeve. The bearing sleeve is fixedly connected to the outer sleeve via the connecting ring. The connecting ring is an annular plate parallel to the annular connector. The position of the connecting ring is adapted to the annular connector. The annular connector fits into the connecting ring and is fixedly connected by bolts.

4. The wheel assembly with a fixed spindle structure according to claim 3, characterized in that, Support seats are also fixed on the centering shafts inside the two wheelsets, and the support seats are configured to be fixedly connected to the frame.

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