CN207510140U - Full temperature range high strength elastic wheel assembly - Google Patents

Abstract

The utility model is related to a kind of full temperature range high strength elastic wheel assemblies, including wheel rim, core wheel and retaining ring, the core wheel includes reduced diameter section and major diameter, retaining ring is sleeved on the reduced diameter section of core wheel, the fastening means that the retaining ring is combined with core wheel using taper interference fit with bolt-connection, the wheel rim, core wheel and retaining ring surround the toroidal cavity that cross section is " V " shape, in the toroidal cavity compression elastic block rubber that several circumferentially uniformly distributed cross sections are " V " shape is installed.40 DEG C~+70 DEG C of full temperature range can be met to use, torque transfer reliability is high, and bearing capacity is good, and service life is long, reduces the manufacture difficulty of elastic block rubber, improves the property easy for installation of elastic block rubber.

Description

Full temperature range high strength elastic wheel device

technical field

The utility model relates to a high-strength elastic wheel device, which belongs to the technical field of mechanical structures.

Background technique

The most notable features of 100% low-floor modern trams are low cost, energy saving and environmental protection. The tracks can be laid directly on the existing roads, and the vehicles stop on the ground. The construction cost of the operating system is only 1/4 to 1/3 of that of the subway. And short construction period, less pollution.

With the increase of my country's population and people's increasing requirements for riding comfort, 100% low-floor compared with 70% low-floor has high utilization rate of passenger room area, long monorail length to carry more passengers, good vehicle stability, and low wheel rim wear, etc. advantage.

But at present, under the harsh environment of the alpine region, there is no low-floor train with a small wheel diameter for use. The low temperature of minus 40°C is a great test for the performance of rubber elastic components - reliability and carrying capacity.

Utility model content

The utility model aims to provide a full-temperature-range high-strength elastic wheel device suitable for alpine regions, which has high torque transmission reliability and good bearing capacity under the full-temperature range.

For this reason, the technical solution adopted by the utility model is: a full-temperature range high-strength elastic wheel device, including a rim, a wheel core and a buckle, the wheel core includes a small diameter section and a large diameter, and the buckle is set on the wheel On the small diameter section of the core, the buckle and the wheel core are fastened by a combination of taper interference fit and bolt connection, and the rim, wheel core and buckle form an annular space with a "V" shape in cross section. A cavity, in which a number of elastic rubber blocks uniformly distributed around the circumference and having a "V" shape in cross-section are compressed and installed in the annular cavity.

As a preference of the above scheme, an elastic paint layer is provided on the mounting surface of the elastic rubber block and the rim, wheel core and buckle to increase the friction coefficient of the contact part with the elastic rubber block, so as to further improve the transmission torque of the wheel under the full temperature range. reliability.

Further, the "V"-shaped cross-section of the elastic rubber block and the annular cavity is 90°-150°, and the radius at the maximum position of the rim is 500mm-580mm. The structural size is optimized so that the small wheel diameter has high load-bearing capacity.

Furthermore, it also includes a grounding wire, one end of which is connected to the rim and the other end is connected to the wheel core for preventing conduction.

The beneficial effects are: it can be used in the whole temperature range of -40°C to +70°C, the reliability of torque transmission is high, the load capacity is good, the service life is long, the difficulty of manufacturing the elastic rubber block is reduced, and the installation convenience of the elastic rubber block is improved. .

Description of drawings

Fig. 1 is the structural representation of the utility model.

Fig. 2 is the front view of the utility model.

Detailed ways

Below by embodiment and in conjunction with accompanying drawing, the utility model is further described:

As shown in Figures 1-2, a full-temperature-range high-strength elastic wheel device is mainly composed of a rim 1, a wheel core 2, a buckle 3, an elastic rubber block 4, and a ground wire 5.

The wheel core 2 includes a small-diameter section and a large-diameter section, and the small-diameter section is tapered. The inner hole of the buckle 3 is also tapered. The buckle 3 is set on the small-diameter section of the wheel core 2, and the buckle 3 and the wheel core 2 are fastened by a combination of taper interference fit and bolt connection, which reduces the stress on the bolt.

The rim 1, the wheel core 2 and the buckle ring 3 form an annular cavity with a "V" shape in cross section, and a number of elastic rubber blocks with a "V" shape in cross section uniformly distributed around the circumference are compressed and installed in the annular cavity. 4. The torque is transmitted through the friction force generated by the compression of the elastic rubber block, and the wheel core, the buckle and the rim are connected; the split ring rubber composed of multiple elastic rubber blocks 4, combined with the "V" shaped cross section, uses the rubber bearing The two conditions of pressure and shear are used to reduce the noise generated by the wheel and rail during the operation of the train, reduce the wear of the wheel tread and prolong its service life, and at the same time reduce the difficulty of manufacturing; the "V" shaped elastic rubber block 4 can effectively adjust the elastic wheel Required radial stiffness, axial stiffness, torsional stiffness. Compared with the traditional one-piece rubber ring, the installation is more convenient and quick, and the manufacturing cost is lower.

The elastic paint layer that increases the friction coefficient of the contact part with the elastic rubber block 4 is provided on the mounting surface of the elastic rubber block 4 and the rim 1, the wheel core 2 and the buckle 3, combined with the pre-compression installation of the elastic rubber block 4, further increases The reliability of torque transmission between the wheel core, buckle and rim under the full temperature range. One end of the ground wire 5 is connected to the rim 1, and the other end is connected to the wheel core 2 to prevent conduction.

Preferably, the "V"-shaped cross-section of the elastic rubber block 4 and the annular cavity is 90°-150°, and the radius at the largest position of the rim 1 is 500mm-580mm. It can be used in the full temperature range of -40℃～+70℃, has high reliability of torque transmission, good bearing capacity, long service life, reduces the difficulty of manufacturing the elastic rubber block, and improves the installation convenience of the elastic rubber block.

Claims (4)

1. A full temperature range high-strength elastic wheel device, comprising a rim (1), a wheel core (2) and a buckle (3), the wheel core (2) includes a small diameter section and a large diameter, and the buckle (3) ) is set on the small-diameter section of the wheel core (2), and it is characterized in that: the buckle (3) and the wheel core (2) adopt a fastening method combining taper interference fit and bolt connection, and the wheel rim ( 1), the wheel core (2) and the retaining ring (3) enclose an annular cavity with a "V"-shaped cross section, and a number of "V"-shaped cross-sections uniformly distributed around the circumference are compressed and installed in the annular cavity. elastic rubber blocks (4). 2. The full-temperature-range high-strength elastic wheel device according to claim 1, characterized in that: the elastic rubber block (4) is connected to the mounting surface of the rim (1), wheel core (2) and buckle (3) An elastic paint layer is arranged on the top to increase the friction coefficient of the contact part with the elastic rubber block (4). 3. The full-temperature-range high-strength elastic wheel device according to claim 1 or 2, characterized in that: the "V"-shaped cross-section of the elastic rubber block (4) and the annular cavity is 90°-150°, The radius at the maximum position of the rim (1) is 500mm-580mm. 4. The all-temperature range high-strength elastic wheel device according to claim 1, characterized in that it also includes a grounding wire (5), one end of the grounding wire (5) is connected to the rim (1), and the other end is connected to the wheel core (2) connected.