CN210793194U

CN210793194U - Driving and braking device for rack rail vehicle

Info

Publication number: CN210793194U
Application number: CN201921359972.4U
Authority: CN
Inventors: 张又孔; 李振华; 易兴利; 李春; 赖舒平; 祝贺; 谢加辉; 何烨; 洪常勤
Original assignee: CRRC Zhuzhou Locomotive Co Ltd
Current assignee: CRRC Zhuzhou Locomotive Co Ltd
Priority date: 2019-08-21
Filing date: 2019-08-21
Publication date: 2020-06-19
Anticipated expiration: 2029-08-21

Abstract

The utility model discloses a driving and braking device of a rack rail vehicle, which comprises an axle bridge, a rack rail wheel arranged on the axle bridge through a rack rail wheel seat, a driving device for driving the rack rail wheel to rotate, and a braking device for limiting the rotation of the rack rail wheel; the driving device comprises a driven gear arranged on the axle bridge, the braking device comprises a brake drum arranged on the axle bridge, the driven gear and the brake drum are respectively arranged on two sides of the gear rack wheel seat, and the driven gear is fixedly connected with the gear rack wheel seat; one end of the gear rail wheel seat opposite to the brake drum extends towards the brake drum to form an installation part, and the installation part penetrates into the brake drum and is fixedly connected with the brake drum. Therefore, the rack rail wheel, the driven gear and the brake drum can be connected into a whole, the driven gear can be driven by the driving mechanism to drive the rack rail wheel to rotate, and reliable braking of the rack rail wheel driving device can be realized by means of matching of the mounting part and the brake drum.

Description

Driving and braking device for rack rail vehicle

Technical Field

The utility model discloses rack rail car drive technical field especially relates to a rack rail car drive arresting gear.

Background

The rack rail vehicle is a mining locomotive which increases the climbing capacity by means of a rack on a track bed and a gear on the locomotive. Foreign countries have a large number of physical locomotives operating on different mountain ground lines. Although a toothed rail vehicle running on a mountain land line is not available in China, similar technologies of the toothed rail vehicle have certain application in the fields of amusement facilities and coal mining.

The rack rail vehicle is suitable for a rack rail line of more than 60 per thousand, and has extremely high requirements on a braking system of the vehicle. The drum brake device has the characteristic of large braking torque and is more suitable for braking of the rack-rail vehicle. Because the diameter of the rack rail wheel is larger and the teeth are distributed on the periphery, the brake drum can not be braked around the rack rail wheel. In addition, the drum brake device has a complex structure and a plurality of parts, and how to integrate the drum brake system in the gear rack wheel drive structure is a technical problem to be solved in the field.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to overcome prior art not enough, provide an integrated level height, drive and the high rack car drive braking system of braking reliability.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a driving and braking device for a rack rail vehicle comprises an axle, a rack rail wheel arranged on the axle through a rack rail wheel seat, a driving device for driving the rack rail wheel to rotate, and a braking device for limiting the rotation of the rack rail wheel; the driving device comprises a driven gear arranged on the axle bridge, the braking device comprises a brake drum arranged on the axle bridge, the driven gear and the brake drum are respectively arranged on two sides of the gear rack wheel seat, and the driven gear is fixedly connected with the gear rack wheel seat; one end of the gear rail wheel seat opposite to the brake drum extends towards the brake drum to form an installation part, and the installation part penetrates into the brake drum and is fixedly connected with the brake drum.

Therefore, the rack rail wheel, the driven gear and the brake drum can be connected into a whole, the driven gear can be driven by the driving mechanism to drive the rack rail wheel to rotate, and reliable braking of the rack rail wheel driving device can be realized by means of matching of the mounting part and the brake drum.

As a further improvement of the above technical solution:

the brake device also comprises a brake band which is wound on the outer circumference of the brake drum, and a driving mechanism which drives the brake band to tightly hold or release the brake drum.

As a specific structure of the drive mechanism, the drive mechanism includes a brake cylinder, a first link, and a second link; the brake cylinder and the first connecting rod are arranged at the upper end of the gear box; the brake cylinder and the first connecting rod are horizontally arranged; the brake cylinder comprises a fixed end and a driving end, and the first connecting rod comprises a hinged end and a movable end;

the fixed end is fixed with the gear box, the driving end is connected with the movable end, the hinged end is hinged with the gear box, and the brake cylinder can drive the first connecting rod to rotate in a horizontal plane;

the second connecting rod is connected with the brake belt, the upper end of the second connecting rod is connected with the first connecting rod, and the lower end of the second connecting rod is hinged to the lower portion of the gear box.

Therefore, the drum brake device can be integrated on the gear box, and the reliable operation of braking is ensured. The first connecting rod and the second connecting rod can rotate around a fixed axis on the gear box to transmit braking force and braking unloading force so as to realize loading and unloading of the braking force.

In order to ensure that all parts are reset after braking, the braking device further comprises a reset spring, the reset spring is arranged in parallel with the brake cylinder, one end of the reset spring is fixed with the gear box, and the other end of the reset spring is fixed with the upper end of the second connecting rod.

In order to realize the integration of a driving device and a drum brake device, the driving and brake device of the rack-and-pinion vehicle further comprises a gear box which is arranged on the axle suspension axle of the axle bridge, and the driving device and the brake device are both arranged on the gear box.

The driving device also comprises a driving element and a transmission mechanism which is in transmission connection with the driving element and the driven gear respectively.

The driving element is a motor, a motor mounting seat is arranged on the gear box, and the motor is fixed on the motor mounting seat.

The transmission mechanism comprises a driving gear in transmission connection with the motor and a transmission gear set in meshing transmission with the driving gear, and the transmission gear set is in transmission connection with the driven gear; the gear box is provided with a driving gear box, and the driving gear is arranged in the driving gear box; the driven gear and the transmission gear set are arranged in the gear box.

In order to prevent grease and foreign matters from being thrown into the gear rack wheel in operation and ensure the safe operation of the gear rack wheel, a gear rack wheel cover is further fixed on the gear box, and the gear rack wheel is arranged in the gear rack wheel cover.

The axle comprises an axle and an eccentric mechanism arranged on the axle, the eccentric mechanism comprises a hollow shaft and two eccentric wheels, the two eccentric wheels are respectively arranged on the axle through bearings, the hollow shaft is sleeved on the axle, and two ends of the hollow shaft are sleeved on the corresponding eccentric wheels; the rack rail wheel seat, the driven gear and the brake drum are all arranged on the hollow shaft. When the eccentric wheel rotates around the axle center, the eccentric wheel can drive the rack and rail wheel assembly on the hollow shaft to lift relative to the wheel set, so that the relative height of the rack and rail wheel and the wheel set is changed. By lifting the rack wheel for many times, the service life of the wheel set can be prolonged.

Compared with the prior art, the utility model has the advantages of:

the utility model discloses a cogged rail drive and drum brake function's integration, but one set of device realizes drive or brake function.

Drawings

Fig. 1 is a plan view of a rack-and-pinion vehicle driving and braking device according to an embodiment of the present invention.

Fig. 2 is a cross-sectional view of the rack-rail vehicle driving and braking device according to the embodiment of the present invention.

Fig. 3 is a rear view of the rack-rail vehicle driving and braking device according to the embodiment of the present invention.

Fig. 4 is a front view of the rack-rail vehicle driving and braking device according to the embodiment of the present invention.

Fig. 5 is a left side view of the rack-rail vehicle driving and braking device according to the embodiment of the present invention.

Fig. 6 is a perspective view of a gear box according to an embodiment of the present invention.

Fig. 7 is a perspective view of another perspective view of a gear box according to an embodiment of the present invention.

Fig. 8 is a perspective view of a rack wheel cover according to an embodiment of the present invention.

Illustration of the drawings: 1. a motor; 2. an active gearbox; 21. a driving gear; 22. an intermediate wheel; 23. a secondary gear; 24. a limited slip coupling; 3. A gear case; 31. a motor mounting seat; 32. a gear box body; 321. a fourth support; 322. a fifth support; 323. a small shaft holding hole; 324. a large shaft holding hole; 33. a fixed seat; 331. a fixing ring; 332. a first support; 333. a second support; 334. a third support; 325. a sixth support; 34. mounting a beam; 343. A seventh support; 35. an active gearbox mount; 4. a braking device; 41. a braking band; 42. a brake cylinder; 421. a fixed end; 422. a driving end; 43. a first link; 431. a hinged end; 432. a movable end; 45. a return spring; 46. a guide block; 44. a second link; 5. a rack wheel cover; 51. an eighth support; 52. a ninth support; 6. an axle; 7. a wheel; 8. an eccentric wheel; 9. a brake drum; 10. a driven gear; 11. a hollow shaft; 12. a rack and pinion gear; 13. an adjusting ring; 131. an adjustment hole; 14. a connecting plate; 15. a rack wheel seat; 151. an installation part; 152. a left half-rack wheel seat; 153. a right half-rack wheel seat; 16. hollow spindle nose.

Detailed Description

The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.

Example (b):

as shown in fig. 1 to 5, the driving and braking device for a rack-and-pinion vehicle of the present embodiment includes a gear box 3, an axle, a rack pinion 12, a rack pinion seat 15, a driving device, and a braking device 4.

For convenience of explanation, referring to fig. 2 and 6, the present embodiment will be explained with the axial direction of the axle as the left-right direction and the direction perpendicular to the axial direction of the axle as the front-rear direction.

As shown in fig. 2, the axle bridge includes an axle 6, an eccentric mechanism mounted on the axle 6, the eccentric mechanism including a hollow shaft 11 and two sets of eccentric adjustment assemblies. Wheels 7 are installed at two ends of the axle 6, and the gear box 3 and the hollow shaft 11 are mounted in a shaft-encircling manner.

The hollow shaft 11 is sleeved on the axle 6, the rack wheel seat 15, the driven gear 10 of the driving device and the brake drum 9 of the braking device 4 are all installed on the hollow shaft 11, and the driven gear 10 and the brake drum 9 are respectively arranged on two sides of the rack wheel seat 15. The rack wheel seat 15 is installed on the hollow shaft 11 through a bearing, the rack wheel seat 15 comprises a left half rack wheel seat 152 and a right half rack wheel seat 153 which are fixedly connected, accommodating grooves are formed in the end faces, opposite to the left half rack wheel seat 152 and the right half rack wheel seat 153, of the left half rack wheel seat, an installation space of the rack wheel 12 is formed between the two accommodating grooves, and the rack wheel 12 is fixed in the installation space.

The eccentric adjustment assembly comprises an eccentric wheel 8, a hollow shaft head 16, an adjustment ring 13 and a connecting plate 14. Two hollow stub shafts 16 are fixed to both ends of the hollow axle 11 in the axial direction, respectively. The eccentric wheel 8 is sleeved on the axle 6 through a bearing, and the hollow shaft head 16 is sleeved on the eccentric wheel 8. The adjusting ring 13 is sleeved at the outer end part of the hollow shaft head 16, and the adjusting ring 13 is fixedly connected with the eccentric wheel 8 through a connecting ring and a bolt. A plurality of adjusting holes 131 are formed in the adjusting ring 13 in the circumferential direction, the adjusting ring 13 is connected with the mounting beam 34 of the gear box 3 through a connecting plate 14, and the left end and the right end of the mounting beam 34 are fixed with the corresponding adjusting ring 13 through the connecting plate 14. One end of the connecting plate 14 is fastened to the corresponding end of the mounting beam 34 by a bolt, and the other end of the connecting plate 14 is fixedly connected to one of the adjusting holes 131 by a bolt.

The toothed rail wheel 12 is thereby fixed to the outer circumference of the eccentric 8, and the wheel set is fixed to the inner circumference of the eccentric 8. Initially, the tooth-rail wheel 12 and the center of the wheel set can be arranged at the same height, and when the wheel 7 of the wheel set is worn, the height of the tooth-rail wheel 12 is synchronously reduced. If the relative heights of the rack rail wheel 12 and the wheel 7 are not adjusted, the operation of the rack rail vehicle is blocked. By releasing the fixing of the adjusting ring and the frame,

but the tooth top on the track can not be reduced relative to the track surface, and the generally allowed reduction height of the gear rail wheel 12 is 5mm, namely the maximum abrasion loss of the diameter of the wheel 7 of the wheel pair is 10 mm. If the wheel is required to be used continuously, the invention only needs to release the fixing of the adjusting ring 13 and the gear box 3, rotate the eccentric wheel 8 counterclockwise for a certain angle, and fix another adjusting hole 131 on the adjusting ring 13 and the connecting plate 14 through bolts. While the eccentric 8 rotates around the center of the axle 6, the height adjusting mechanism drives the rack wheel assembly on the hollow shaft 11 to be lifted relative to the wheel set, so that the relative height of the rack wheel 12 and the wheel set is changed. The wheel can be used continuously, and the service life of the wheel 7 of the wheel pair is prolonged by lifting the rack wheel 12 for many times.

The driving device comprises a motor 1, a driving gear 21 in transmission connection with the motor 1 through a limited slip coupling 24, an intermediate gear 22 in meshing transmission with the driving gear 21, a secondary gear 23 in meshing transmission with the intermediate gear 22, and a driven gear 10 in transmission connection with the secondary gear 23.

The limited slip coupling 24 is arranged between the output shaft of the motor 1 and the driving gear 21, and the torque output by the motor 1 is transmitted to the driving gear 21 through the limited slip coupling 24, then transmitted to the secondary gear 23 through the intermediate gear 22 and finally transmitted to the driven gear 10. The driven gear 10 is sleeved on the hollow shaft 11 through a bearing, and the left half-gear rail wheel seat is rigidly connected with the driven gear 10 through a bolt. During traction, the driven gear 10 transmits traction torque to the rack wheel 12, and the rack wheel is meshed with the ground rack to drive the vehicle to move.

The brake device 4 includes a brake cylinder 42, a first link 43, a second link 44, a return spring 45, a brake band 41, and a brake drum 9.

The brake drum 9 is sleeved on the hollow shaft 11, and the driven gear 10 and the brake drum 9 are respectively arranged on two sides of the gear rail wheel seat 15. One end of the right half-gear wheel seat opposite to the brake drum 9 extends towards the brake drum 9 to form a mounting part 151, and the mounting part 151 penetrates into the brake drum 9 and is fixedly connected with the brake drum 9 through bolts.

The brake band 41 is wrapped around the outer circumference of the brake drum 9, and the brake cylinder 42, the first link 43, the second link 44 and the return spring 45 constitute a driving mechanism to drive the brake band 41 to tighten or loosen the brake drum 9.

The brake cylinder 42 is disposed in the front-rear direction, and in the initial state, the first link 43 is disposed in the left-right direction and the second link 44 is disposed in the up-down direction.

The brake cylinder 42 includes a fixed end 421 and a driven end 422, and the first link 43 includes a hinged end 431 and a movable end 432. The fixed end 421 is fixed with the gear box 3, the driving end 422 is connected with the movable end 432 through the guide block 46, and the guide block 46 plays a role in guiding when the connecting rod operates. The hinged end 431 is hinged with the gear box 3, and the brake cylinder 42 can drive the first connecting rod 43 to rotate in a horizontal plane; the second link 44 is provided at the rear side of the brake drum 9 and connected to the brake band 41, the upper end of the second link 44 is connected to the first link 43, and the lower end of the second link 44 is hinged to the lower portion of the gear case 3.

The return spring 45 is disposed in parallel with the brake cylinder 42, a front end 451 of the return spring 45 is fixed to the gear case 3, and a rear end 452 of the return spring 45 is fixed to an upper end of the second link 44.

During braking, the brake cylinder 42 acts to push the first link rod 43 to move, the first link rod 43 rotates around the hinge point of the first link rod, the second link rod 44 is driven to rotate around the hinge point of the second link rod, and the brake band 41 is driven to tightly hold the brake drum 9. The brake drum 9 transmits the braking torque applied by the brake band 41 to the gear wheel 12, engaging the ground rack to prevent movement of the vehicle. After the brake cylinder 42 is released, the return spring 45 returns the brake members.

In order to ensure reliable installation of the height adjusting mechanism, the driving device and the braking device, the utility model discloses gear box 3 has been specially designed. As shown in fig. 6 and 7, the gear box 3 includes a gear box body 32 for being mounted around a shaft with an axle bridge of the rack vehicle, a fixing seat 33 arranged on the right side of the gear box body 32 and in parallel with the gear box body 32, an active gear box mounting seat 35 arranged at the rear end of the gear box body 32, and a motor mounting seat 31 connected to the right end of the active gear box mounting seat 35, wherein the rear end of the fixing seat 33 is connected with the motor mounting seat 31 through a first bracket, and the front ends of the gear box body 32 and the fixing seat 33 are connected through a mounting beam 34. The left and right ends of the mounting beam 34 are fixed to the respective adjusting rings 13 by connecting plates 14.

The motor 1 is fixed on the motor mounting seat 31, the rear end of the gear box body 32 is fixedly connected with the driving gear box 2 through bolts, and the driving gear 21 and the intermediate wheel 22 are installed in the driving gear box 2.

The secondary gear 23 and the driven gear 10 are mounted in the gear box body 32, a shaft bridge hole 324 and a transmission shaft hole 323 penetrating through the left and right side surfaces of the gear box body 32 are formed in the gear box body 32, and the shaft bridge hole 324 and the transmission shaft hole 323 are arranged at intervals in the front-rear direction of the gear box body 32. The drive shaft of the secondary gear 23 projects from the drive shaft hole 323, and the hollow shaft 11 projects from the axle hole 324.

An installation space for the track wheel 12, the brake drum 9 and the second link 44 is formed between the gear box body 32 and the fixed seat 33. The gear box body 32 is provided with a shaft bridge hole 324 and a transmission shaft hole 323 which penetrate through the left and right side surfaces of the gear box body 32, and the shaft bridge hole 324 and the transmission shaft hole 323 are arranged at intervals along the front-rear direction of the gear box body 32. The upper end of the gear box body 32 is provided with a mounting part for mounting the brake cylinder 42; the mounting portion includes fourth and

fifth abutments

321 and 322, and the fourth and

fifth abutments

321 and 322 are arranged at intervals in the front-rear direction of the gear case body 32. The cylinder barrel of the brake cylinder 42 is fixed to a fourth abutment 321 and a fifth abutment 322.

The fixing base 33 comprises a fixing ring 331 arranged coaxially with the axle bridge, which fixing ring 331 is used for fixing the hollow axle head 16. The rear end of the fixing ring 331 is provided with a first bracket, and the front end of the fixing ring 331 is provided with a second bracket. The lower part of the first support is fixedly connected with the gear box body 32 through the motor mounting seat 31, and the lower end of the second support is fixedly connected with the gear box body 32 through the mounting beam 34.

The upper end of the first bracket is provided with a first support 332 for hinging the first connecting rod 43, and a hinged end 431 of the first connecting rod 43 is hinged on the first support 332. The lower end of the first bracket is provided with a third support 334 for hinging the second connecting rod 44, the third support 334 extends into the mounting space, and the lower end of the second connecting rod 44 is hinged on the third support 334. The upper end of the second bracket is provided with a second seat 333 for fixing the return spring 45, and the front end of the return spring 45 is fixed to the second seat 333.

In this embodiment, a rack wheel cover 5 is provided in the installation space, and a rack wheel 12 is provided in the rack wheel cover 5. The upper end of the right side of the gear box body 32 is provided with a sixth support 325 for fixing the rack wheel cover 5. The mounting beam 34 is provided with a seventh seat 343 for fixing the rack wheel housing 5. Accordingly, as shown in fig. 3, the top of the rack wheel housing 5 is provided with an eighth support 51, the front end of the rack wheel housing 5 is provided with a ninth support 52, the sixth support 325 and the eighth support 51 are fixed by bolts, and the seventh support 343 and the ninth support 52 are fixed by bolts.

The gear box 3 integrates the height adjusting mechanism, the driving device and the braking device, so that the reliable driving and braking of the driving and braking device of the rack-rail vehicle can be realized.

The above description is only for the preferred embodiment of the present application and should not be taken as limiting the present application in any way, and although the present application has been disclosed in the preferred embodiment, it is not intended to limit the present application, and those skilled in the art should understand that they can make various changes and modifications within the technical scope of the present application without departing from the scope of the present application, and therefore all the changes and modifications can be made within the technical scope of the present application.

Claims

1. A driving and braking device of a rack rail vehicle comprises an axle, a rack rail wheel (12) arranged on the axle through a rack rail wheel seat (15), a driving device for driving the rack rail wheel (12) to rotate, and a braking device (4) for limiting the rotation of the rack rail wheel (12); the brake device is characterized in that the driving device comprises a driven gear (10) arranged on an axle bridge, the brake device (4) comprises a brake drum (9) arranged on the axle bridge, the driven gear (10) and the brake drum (9) are respectively arranged on two sides of a rack wheel seat (15), and the driven gear (10) is fixedly connected with the rack wheel seat (15); the opposite end of rack wheel seat (15) and brake drum (9) orientation brake drum (9) extend and form installation department (151), installation department (151) are deepened in brake drum (9) and with brake drum (9) fixed connection.

2. A tooth-track vehicle drive and brake device according to claim 1, characterized by further comprising a gear box (3) mounted with said axle embracing axle, said drive device and brake device (4) being mounted on said gear box (3).

3. A cogged rail car drive brake device according to claim 2, characterised in that the brake device (4) further comprises a brake band (41) wrapped around the outer circumference of the brake drum (9), and a drive mechanism driving the brake band (41) to grip or release the brake drum (9).

4. A toothed rail vehicle driving brake device according to claim 3, characterized in that the driving mechanism comprises a brake cylinder (42), a first link (43) and a second link (44); the brake cylinder (42) and the first connecting rod (43) are arranged at the upper end of the gear box (3); the brake cylinder (42) and the first connecting rod (43) are horizontally arranged; the brake cylinder (42) comprises a fixed end (421) and a driving end (422), and the first connecting rod (43) comprises a hinged end (431) and a movable end (432);

the fixed end (421) is fixed with the gear box (3), the driving end (422) is connected with the movable end (432), the hinged end (431) is hinged with the gear box (3), and the brake cylinder (42) can drive the first connecting rod (43) to rotate in a horizontal plane;

the second connecting rod (44) is connected with the brake belt (41), the upper end of the second connecting rod (44) is connected with the first connecting rod (43), and the lower end of the second connecting rod (44) is hinged to the lower part of the gear box (3).

5. The toothed rail vehicle driving brake device according to claim 4, characterized in that the brake device (4) further comprises a return spring (45), the return spring (45) is arranged in parallel with the brake cylinder (42), one end of the return spring (45) is fixed with a gear box (3), and the other end of the return spring (45) is fixed with the upper end of the second link (44).

6. The toothed rail vehicle drive brake device according to any one of claims 2 to 5, characterized in that the drive device further comprises a drive element, a transmission in driving connection with the drive element and the driven gear (10), respectively.

7. The toothed rail vehicle drive brake device according to claim 6, characterized in that the drive element is an electric motor (1), a motor mounting seat (31) is arranged on the gear box (3), and the electric motor (1) is fixed on the motor mounting seat (31).

8. The toothed rail vehicle driving and braking device according to claim 7, characterized in that the transmission mechanism comprises a driving gear (21) in transmission connection with the motor (1) and a transmission gear set in meshing transmission with the driving gear (21), wherein the transmission gear set is in transmission connection with the driven gear (10); the gear box (3) is provided with a driving gear box (2), and the driving gear (21) is arranged in the driving gear box (2); the driven gear (10) and the transmission gear set are both arranged in the gear box (3).

9. The toothed rail vehicle drive brake device according to any one of claims 2 to 5, characterized in that a toothed rail wheel cover (5) is further fixed to the gear box (3), and the toothed rail wheel (12) is arranged in the toothed rail wheel cover (5).

10. The toothed rack vehicle driving and braking device according to any one of claims 2-5, wherein the axle comprises an axle (6) and an eccentric mechanism mounted on the axle (6), the eccentric mechanism comprises a hollow shaft (11) and two eccentric wheels (8), the two eccentric wheels (8) are respectively mounted on the axle (6) through bearings, the hollow shaft (11) is sleeved on the axle (6), and two ends of the hollow shaft (11) are sleeved on the corresponding eccentric wheels (8); the rack-and-rail wheel seat (15), the driven gear (10) and the brake drum (9) are all arranged on the hollow shaft (11).