Gear rack rail system of mountain rack rail railway

Abstract

The invention relates to a gear rack rail system of a mountain rack rail railway. The gear rack rail system comprises sleepers, rubber damping 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 better derailing prevention and wear resistance are achieved, and an inter-tooth back clearance is not generated in the positive and negative directions; 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 vibration is reduced; and fifthly, the problems that the transverse resistance of a traditional strip-shaped sleeper in a small-curve-radius section is low and the longitudinal stability of a ballast bed in a large-gradient section is insufficient are solved.

Description

Technical Field

[0001] The invention relates to a gear and rack system for mountain rack railways with high meshing precision, which can effectively reduce the meshing vibration amplitude of gear racks, tooth knocking sound and wheel wear when a train moves in a serpentine manner, and belongs to the field of gear and rail manufacturing for mountain rack railways. Background Art

[0002] CN209958160U, named “Rack structure of rack railway”, comprises a gear mounted on a train axle, and a rack fixed on a railway sleeper and meshing with the gear; the gear has 19 teeth, a module of 40 mm, a pitch circle diameter of 760 mm, and a thickness of 50 mm; the rack has a module of 40 mm, a tooth width of 42.14 mm, a tooth groove width of 36.97 mm, and a thickness of 50 mm; the gear and the rack are a positive displacement meshing structure, the displacement coefficient is 0.25, the distance from the center of the gear to the pitch line of the rack is 770 mm, the tooth top height coefficient is 1, the top clearance coefficient is 0.25, the tooth root fillet coefficient is 0.33, and the overlap is 1.8801. Its shortcomings are: first, the meshing accuracy of the gear and rack is low in the small curve radius area of ​​the line; second, the meshing of the gear and rack is greatly affected by the serpentine motion of the train and the wear of the wheels; third, the on-site installation and subsequent maintenance of the rack are difficult and costly; fourth, the gear-rack meshing produces a loud tooth knocking sound and greater vibration. Summary of the invention

[0003] Design purpose: To avoid the shortcomings of the background technology, a gear and rack system for mountain rack railways is designed with high meshing accuracy, which can effectively reduce the gear and rack meshing vibration amplitude, tooth knocking sound and wheel wear during the serpentine motion of the train.

[0004] Design scheme: In order to achieve the above design objectives. In the design scheme of the present invention, the gear rack system of the mountain rack railway includes a pinion gear assembly installed on the axle of the train wheel, and a rack fixed on the railway sleeper and meshing with the pinion gear assembly. The pinion gear assembly adopts a ball joint structure, which can realize the adaptive meshing of the pinion gear assembly and the rack. The cross section of the rack adopts the traditional rail cross section type, and can be fixed on the supporting sleeper of the running rail of the mountain rack system with standard fasteners.

[0005] The circumferential surface of the driving internal gear in the driving pin gear assembly is designed as an arc-shaped circumferential surface. The arc-shaped circumferential surface can be regarded as a combination of several arches. Since the arc-shaped circumferential surface is a combination of arches in all directions, when any part of the arch is subjected to force, the force can be evenly dispersed to the surroundings. This is the same as the characteristic of the arch being subjected to pressure. Therefore, when the arc-shaped circumferential surface of the outer ring of the driving gear forms a tangent fit with the circumferential surface of the inner ring of the driving gear, the contact area is reduced, the friction coefficient and the amount of wear are greatly reduced, and the bearing capacity of the driving gear is greatly improved.

[0006] Technical solution: A gear and rack system for a mountain rack railway, including sleepers, rubber vibration-damping pads, fastener assemblies, rails, wheels, wheel axles, racks and pin gear assemblies. The pin gear assembly is installed on the wheel axle and the pin gear assembly adopts a ball joint structure. The pin gear assembly is adaptively meshed with the rack.

[0007] Compared with the background technology, the present invention has the following advantages: firstly, the pin gear adopts a ball joint structure to realize adaptive meshing of the pin gear and the rack, so as to ensure reliable force transmission, which can not only meet the effective meshing of the gear and the rack in the small curve radius section, but also avoid the influence of the train serpentine motion, wheel wear and ambient temperature; secondly, the pin gear can ensure that at least 2 to 3 pin rollers are always meshed with the rack, has good anti-derailment and wear resistance, and no backlash between teeth will be generated in the positive and negative directions; thirdly, the longitudinal bearing capacity of the rack is large, which meets the longitudinal force requirements generated by the drive when the train runs on the slope; fourthly, the rollers of the pin gear assembly roll smoothly on the tooth surface of the rack, without generating tooth knocking sound, and also reducing vibration, and the existing mature technologies such as rubber pads can be used at the lower part of the rack to achieve vibration reduction and noise reduction; fifthly, the rack structure is convenient for factory manufacturing, on-site installation and later maintenance and repair; sixthly, the problem of low lateral resistance of traditional strip rail sleepers in the small curve radius section and insufficient longitudinal stability of the roadbed in the large slope section is significantly improved. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0009] Figure 2 It is a structural schematic diagram of the pin gear assembly.

[0010] Figure 3 yes Figure 2 Schematic diagram of the three-dimensional structure.

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

[0012] Figure 5 yes Figure 4 Stereoscopic diagram.

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

[0014] Figure 7 It is a structural diagram of the background technology. DETAILED DESCRIPTION

[0015] Example 1: Refer to the attached Figure 1-6A gear and rack system for a mountain rack railway comprises a sleeper 1, a rubber vibration-damping pad 2, a fastener assembly 3, a rail 4, a wheel 5, a wheel axle 6, a rack 7, and a pin gear assembly 8. The pin gear assembly 8 is installed on the wheel axle 6 and adopts a ball joint structure. The pin gear assembly 8 is adaptively meshed with the rack 7 to transmit the driving power of the train.

[0016] The pin 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 8-5, a clamping nut 8-6 and a pin assembly 8-7; the arcuate teeth on the inner ring of the driving outer gear 8-1 and the outer ring of the driving inner gear 8-2 mesh with each other to transmit the driving power to the rack 7, the spherical outer ring 8-3 and the spherical inner ring 8-4 are used in pairs to form a ball joint structure and are located between the driving outer gear 8-1 and the driving inner gear 8-2, and together with the arcuate teeth, realize the adaptive meshing of the pin gear assembly 8, the gear spacer 8-5 is located on the inner ring of the driving outer gear 8-1 and the outer ring of the driving inner gear 8-2 and plays a role of lateral limit with the clamping nut 8-6. Multiple pin assemblies 8-7 are distributed on the driving outer gear 8-1 at equal intervals.

[0017] The driving outer gear 8-1 is provided with an oil hole for lubricating the meshing part between the driving outer gear 8-1 and the driving inner gear 8-2. The circumferential surface of the driving inner gear 8-2 is a three-stage boss structure, the circumferential surface of the third-stage boss is tangent to the inner circumferential surface of the driving outer gear 8-1, and the space formed by the circumferential surface of the second-stage boss, the circumferential surface of the first-stage boss and the circumferential surface of the relative boss of the inner ring of the driving outer gear 8-1 is used to install the ball joint structure formed by the spherical outer ring 8-3 and the spherical inner ring 8-4 used in pairs. The pin assembly 8-7 is composed of a pin 8-7-1, a sleeve 8-7-2, a roller 8-7-3, a flat washer 8-7-4 for the pin, and a cotter pin 8-7-5; the pin 8-7-1 and the sleeve 8-7-2 are installed on the driving external gear 8-1, and are supporting components of the pin assembly 8-7; the roller (8-7-3) is installed on the sleeve 8-7-2 through clearance fit to achieve smooth rolling when the pin assembly 8-7 and the rack 7 are engaged; the flat washer 8-7-4 for the pin and the cotter pin 8-7-5 are used in combination to achieve lateral limitation of the pin 8-7-1 and the sleeve 8-7-2, or other lateral limitation structures are used.

[0018] There are rubber vibration-damping pads 2 between the rails 4, the rack rails 7 and the sleepers 1. Rubber vibration-damping pads 2 are arranged under the rails 4 and the rack rails 7 to achieve vibration reduction and noise reduction.

[0019] like Figure 6As shown, the fastener assembly 3 is composed of an iron seat 3-1, a spring bar 3-2, a T-bolt 3-3, a gauge block 3-4, a nut 3-5, a washer 3-6, etc. It is used for reliable installation of the rack rail 7 and the rail 4, which is an application of the mature installation technology of the traditional rail.

[0020] It should be understood that although the above embodiments provide a relatively detailed textual description of the design ideas of the present invention, these textual descriptions are only simple textual descriptions of the design ideas of the present invention, rather than limitations on the design ideas of the present invention. Any combination, addition or modification that does not exceed the design ideas of the present invention shall fall within the protection scope of the present invention.

Claims

1. A gear and rack system for a mountain rack railway, comprising a sleeper (1), a rubber vibration-damping pad (2), a fastener assembly (3), a rail (4), a wheel (5), a wheel axle (6), a rack (7) and a pinion gear assembly (8), wherein: The pin shaft gear assembly (8) is mounted on the wheel shaft (6) and adopts a ball joint structure. The pin shaft gear assembly (8) is adaptively meshed with the rack (7).

2. The gear and rack system of the mountain rack railway according to claim 1, characterized in that: The pin 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 (8-5), a clamping nut (8-6) and a pin assembly (8-7); the arc-shaped teeth on the inner ring of the driving outer gear (8-1) and the outer ring of the driving inner gear (8-2) mesh with each other to transmit driving power to the gear rail (7); the spherical outer ring (8-3) and the spherical inner ring (8-4) are used in pairs to form a ball joint 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 adaptive meshing of the pin gear assembly (8); the gear spacer (8-5) is located on the inner ring of the driving outer gear (8-1) and the outer ring of the driving inner gear (8-2) and is laterally limited by the clamping nut (8-6); and a plurality of pin assemblies (8-7) are circumferentially distributed at equal intervals on the driving outer gear (8-1).

3. The gear and rack system of the mountain rack railway according to claim 2, characterized in that: The driving external gear (8-1) is provided with an oil hole for lubricating the meshing portion between the driving external gear (8-1) and the driving internal gear (8-2).

4. The gear and rack system of the mountain rack railway according to claim 2, characterized in that: The circumferential surface of the driving internal gear (8-2) is a three-stage boss structure, the circumferential surface of the third-stage boss is tangently matched with the inner circumferential surface of the driving external gear (8-1), and the space formed by the circumferential surface of the second-stage boss, the circumferential surface of the first-stage boss and the circumferential surface of the inner ring of the driving external gear (8-1) is used to install a ball joint structure formed by the paired use of a spherical outer ring (8-3) and a spherical inner ring (8-4).

5. The gear rack system of the mountain rack railway 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 flat washer for the pin shaft (8-7-4), and a cotter pin (8-7-5); the pin shaft (8-7-1) and the sleeve (8-7-2) are mounted on the driving external gear (8-1) and are supporting components of the pin shaft assembly (8-7); the roller (8-7-3) is mounted on the sleeve (8-7-2) through clearance fit to achieve smooth rolling when the pin shaft assembly (8-7) and the gear rail (7) are engaged; the flat washer for the pin shaft (8-7-4) and the cotter pin (8-7-5) are used in combination to achieve lateral positioning of the pin shaft (8-7-1) and the sleeve (8-7-2), or other lateral positioning structure forms are adopted.

6. The gear and rack system of the mountain rack railway according to claim 1, characterized in that: There are rubber vibration-damping pads (2) between the steel rails (4), the rack rails (7) and the sleepers (1).

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