Gear rack rail system of mountain rack rail railway

Abstract

The utility model relates to a gear rack rail system of a mountain rack rail railway. The gear rack rail system comprises sleepers, rubber vibration reduction base plates, fastener assemblies, steel rails, wheels, wheel axles, rack rails and pin shaft gear assemblies. The pin shaft gear assembly is installed on the wheel shaft, is of a spherical hinge structure and is meshed with the rack rail in a self-adaptive mode. The device has the advantages that 1, the pin shaft gear adopts a spherical hinge structure to realize self-adaptive meshing of the pin shaft gear and the toothed rail, so that reliable force transmission is ensured; secondly, the pin shaft gear can ensure that a plurality of pin shaft rollers are always meshed with the toothed rail, so that the anti-derailing and wear-resisting properties are better; the longitudinal bearing capacity of the toothed rail is large, and the requirement for longitudinal force generated by driving when the train runs on the ramp is met; a roller of the pin shaft gear assembly smoothly rolls on the tooth surface of the toothed rail, tooth knocking sound cannot be generated, and meanwhile vibration is reduced; and fifthly, the problems of low transverse resistance of a traditional strip-shaped sleeper in a small-curve-radius section and insufficient longitudinal stability of a ballast bed in a large-gradient section are obviously improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to a mountain rack railway's gear rack system with high meshing precision, which can effectively reduce the meshing vibration amplitude, knocking sound and wheel wear of gear rack when the train is in a snake-like motion, and belongs to the field of mountain rack railway gear rack manufacturing. BACKGROUND

[0002] CN209958160U, named "rack structure of rack railway", includes a gear installed on the train axle, a rack fixed on the railway sleeper and meshed with the gear; the gear has 19 teeth, a module of 40mm, a pitch circle diameter of 760mm and a thickness of 50mm; the rack has a module of 40mm, a tooth width of 42.14mm, a tooth slot width of 36.97mm and a thickness of 50mm; the gear and the rack are in a positive displacement meshing structure, with a displacement coefficient of 0.25, a gear center to rack pitch line distance of 770mm, a tooth tip height coefficient of 1, a tip clearance coefficient of 0.25, a tooth root corner coefficient of 0.33 and a coincidence degree of 1.8801. The disadvantages are: first, the meshing precision of the gear and the rack is low in the small curve radius area of the line; second, the meshing of the gear and the rack is greatly affected by the snake-like motion of the train and the wear of the wheel; third, the installation of the rack on site and the maintenance in the later period are difficult and costly; fourth, the knocking sound and vibration caused by the meshing of the gear and the rack are large. SUMMARY

[0003] Design purpose: to avoid the disadvantages in the background art, design a mountain rack railway's gear rack system with high meshing precision, which can effectively reduce the meshing vibration amplitude, knocking sound and wheel wear of gear rack when the train is in a snake-like motion.

[0004] Design scheme: in order to achieve the above design purpose, the utility model adopts a pin shaft gear assembly installed on the train wheel axle and a rack fixed on the railway sleeper and meshed with the pin shaft gear assembly. The pin shaft gear assembly adopts a ball hinge structure, which can realize the self-adaptive meshing of the pin shaft gear assembly and the rack. The cross section of the rack adopts a traditional steel rail cross section type, which can be fixed on the supporting sleeper of the mountain rack system running steel rail by standard fasteners.

[0005] The circumferential surface of the driving inner gear in the driving pin shaft gear assembly is designed as an arc-shaped circumferential surface. The arc-shaped circumferential surface can be regarded as a combination of arches. Since the arc-shaped circumferential surface is a combination of arches in all directions, the force can be evenly dispersed in all directions at any location of the arches. This is the same as the characteristics of the arch under pressure. Therefore, when the arc-shaped circumferential surface of the driving gear outer ring is tangent to the circumferential surface of the driving gear inner ring, the contact area is reduced, the friction coefficient and the wear amount are greatly reduced, and the carrying capacity of the driving gear is greatly improved.

[0006] Technical solution: A gear rack system of mountain rack railway, comprising a sleeper, a rubber damping pad, a fastener assembly, a rail, a wheel, a wheel shaft, a rack and a pin shaft gear assembly, the pin shaft gear assembly is installed on the wheel shaft and the pin shaft gear assembly adopts a spherical hinge structure, and the pin shaft gear assembly is self-adaptively engaged with the rack.

[0007] Compared with the background art, the pin shaft gear adopts a spherical hinge structure to realize self-adaptive engagement of the pin shaft gear with the rack, ensure reliable force transmission, not only can meet effective engagement of the gear with the rack in a small curve radius section, but also can avoid influence of train snake motion, wheel wear and environmental temperature; the pin shaft gear can ensure that at least 2-3 pin shaft rollers are always engaged with the rack, has good derailment prevention and wear resistance, and will not produce intertooth backlash in forward and reverse directions; the rack has large longitudinal bearing capacity, meets longitudinal force demand generated by driving when the train runs on a ramp; the roller of the pin shaft gear assembly smoothly rolls on the rack tooth surface, will not produce knocking sound, and also reduces vibration, and the lower part of the rack can adopt existing mature technologies such as rubber pad to realize vibration and noise reduction; the rack structure is convenient for factory manufacturing, on-site installation and later maintenance and repair; and the problems of low horizontal resistance of traditional strip-shaped sleepers in a small curve radius section and insufficient longitudinal stability of the track bed in a large slope section are obviously improved. BRIEF DESCRIPTION OF DRAWINGS

[0008] Figure 1 is a schematic diagram of a gear rack system of mountain rack railway.

[0009] Figure 2 is a structure schematic diagram of a pin shaft gear assembly.

[0010] Figure 3 is Figure 2 a three-dimensional structure schematic diagram.

[0011] Figure 4 is a local structure schematic diagram of a pin shaft assembly.

[0012] Figure 5 is Figure 4 a three-dimensional schematic diagram.

[0013] Figure 6 is a structure schematic diagram of a fastener assembly.

[0014] Figure 7 is a structure schematic diagram of the background art. DETAILED DESCRIPTION

[0015] Embodiment 1: refer to the accompanying Figures 1-6A rack rail system of mountain rack railway, comprising sleeper 1, rubber damping pad 2, fastener assembly 3, steel rail 4, wheel 5, wheel axle 6, rack rail 7, pin shaft gear assembly 8. Its features are: pin shaft gear assembly 8 is installed on wheel axle 6 and pin shaft gear assembly adopts ball hinge structure, pin shaft gear assembly 8 and rack rail 7 are self-adaptive meshing, used for transmitting driving power of train.

[0016] The pin shaft gear assembly 8 is composed of driving outer gear 8-1, driving inner gear 8-2, spherical outer ring 8-3, spherical inner ring 8-4, gear spacer 8-5, compression nut 8-6 and pin shaft assembly 8-7; the arc-shaped tooth shapes on the inner circle of driving outer gear 8-1 and the outer circle of driving inner gear 8-2 are meshed with each other to transmit driving power to rack rail 7, the spherical outer ring 8-3 and the spherical inner ring 8-4 are used in pairs to form a ball hinge structure and are located between the driving outer gear 8-1 and the driving inner gear 8-2, and together with the arc-shaped teeth realize the self-adaptive meshing of the pin shaft gear assembly 8, the gear spacer 8-5 is located between the inner circle of the driving outer gear 8-1 and the outer circle of the driving inner gear 8-2 and both of them play a role in transverse limiting. A plurality of pin shaft assemblies 8-7 are distributed at equal intervals in the circumferential direction of the driving outer gear 8-1.

[0017] The driving outer gear 8-1 is provided with oil holes for lubricating the meshing part of the driving outer gear 8-1 and the driving inner gear 8-2. The circumferential surface of the driving inner gear 8-2 is in a three-stage boss structure, the third-stage boss circumferential surface is tangent to the inner circumferential surface of the driving outer gear 8-1, and the second-stage boss circumferential surface and the first-stage boss circumferential surface form a space with the opposite boss circumferential surface of the inner circle of the driving outer gear 8-1, which is used for installing the ball hinge structure formed by the spherical outer ring 8-3 and the spherical inner ring 8-4 used in pairs. The pin shaft assembly 8-7 is composed of pin shaft 8-7-1, sleeve 8-7-2, roller 8-7-3, flat washer for pin shaft 8-7-4 and cotter pin 8-7-5; the pin shaft 8-7-1 and the sleeve 8-7-2 are installed on the driving outer gear 8-1 and are the support members of the pin shaft assembly 8-7, the roller (8-7-3) is installed on the sleeve 8-7-2 through clearance fit, realizing smooth rolling when the pin shaft assembly 8-7 and the rack rail 7 are meshed, the flat washer for pin shaft 8-7-4 and the cotter pin 8-7-5 are used in pairs to realize the transverse limiting of the pin shaft 8-7-1 and the sleeve 8-7-2, or other transverse limiting structure forms can be used.

[0018] The steel rail 4, the rack rail 7 and the sleeper 1 are all provided with rubber damping pads 2, and the steel rail 4 and the rack rail 7 are both provided with rubber damping pads 2 below to realize damping and noise reduction.

[0019] As Figure 6As shown, the fastener assembly 3 is composed of an iron base 3-1, a spring strip 3-2, a T-shaped bolt 3-3, a gauge block 3-4, a nut 3-5, a washer 3-6 and the like. The reliable installation for the toothed rail 7 and the steel rail 4 is the application of the mature installation technology of the conventional steel rail.

[0020] It should be understood that, although the above-mentioned embodiments have been described in detail in the design idea of the utility model, these textual descriptions are only simple textual descriptions of the design idea of the utility model, but not the limitation of the design idea of the utility model, and any combination, addition or modification beyond the design idea of the utility model falls within the protection scope of the utility model.

Claims

1. A rack-rail system of a mountain rack-rail railway, comprising a sleeper (1), a rubber damping pad (2), a fastener assembly (3), a steel rail (4), a wheel (5), a wheel axle (6), a rack rail (7) and a pin shaft gear assembly (8), characterized in that: The pin shaft gear assembly (8) is installed on the wheel shaft (6) and adopts a spherical hinge structure, and the pin shaft gear assembly (8) is self-adaptively engaged with the toothed rail (7).

2. Rack-rail system for mountain rack-railways according to claim 1, characterized in that: The pin shaft gear assembly (8) is composed of a driving outer gear (8-1), a driving inner gear (8-2), a spherical outer ring (8-3), a spherical inner ring (8-4), a gear spacer ring (8-5), a compression nut (8-6) and a pin shaft assembly (8-7); the arc-shaped tooth shapes on the inner ring of the driving outer gear (8-1) and the outer ring of the driving inner gear (8-2) are mutually engaged to transmit driving power to the toothed rail (7), the spherical outer ring (8-3) and the spherical inner ring (8-4) are used in pairs to form a spherical hinge structure and are located between the driving outer gear (8-1) and the driving inner gear (8-2), and together with the arc-shaped teeth, the self-adaptive engagement of the pin shaft gear assembly (8) is realized, the gear spacer ring (8-5) is located between the inner ring of the driving outer gear (8-1) and the outer ring of the driving inner gear (8-2) and is transversely limited by the compression nut (8-6), and a plurality of pin shaft assemblies (8-7) are circumferentially and equidistantly distributed on the driving outer gear (8-1).

3. Rack-rail system for mountain rack-railways according to claim 2, characterized in that: The driving outer gear (8-1) is provided with an oil hole for lubricating the meshing part of the driving outer gear (8-1) and the driving inner gear (8-2).

4. The tooth-rail system of a mountain rack railway according to claim 2, characterized in that The circumferential surface of the driving inner gear (8-2) is in a three-stage boss structure, the third-stage boss circumferential surface is tangent to the inner circumferential surface of the driving outer gear (8-1), the second-stage boss circumferential surface and the first-stage boss circumferential surface form a space with the opposite boss circumferential surface of the inner ring of the driving outer gear (8-1) for installing the spherical hinge structure formed by the spherical outer ring (8-3) and the spherical inner ring (8-4) used in pairs.

5. Rack-rail system for mountain rack-railways according to claim 2 or 4, characterized in that: The pin shaft assembly (8-7) is composed of a pin shaft (8-7-1), a sleeve (8-7-2), a roller (8-7-3), a pin shaft flat washer (8-7-4) and a split pin (8-7-5); the pin shaft (8-7-1) and the sleeve (8-7-2) are installed on the driving outer gear (8-1) and are support members of the pin shaft assembly (8-7), the roller (8-7-3) is installed on the sleeve (8-7-2) through a gap fit to realize smooth rolling when the pin shaft assembly (8-7) is engaged with the toothed rail (7), and the pin shaft flat washer (8-7-4) and the split pin (8-7-5) are used in pairs to realize the transverse limiting of the pin shaft (8-7-1) and the sleeve (8-7-2).

6. The toothed rail system of a mountain rack railway according to claim 1, characterized in that There are rubber damping pads (2) between the steel rail (4), the toothed rail (7) and the sleeper (1).

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