CN112519571A - Dynamic seal adjustable shuttle car wheel edge brake speed reducer and shuttle car traveling system - Google Patents
Dynamic seal adjustable shuttle car wheel edge brake speed reducer and shuttle car traveling system Download PDFInfo
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- CN112519571A CN112519571A CN202011526240.7A CN202011526240A CN112519571A CN 112519571 A CN112519571 A CN 112519571A CN 202011526240 A CN202011526240 A CN 202011526240A CN 112519571 A CN112519571 A CN 112519571A
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- wheel
- shell
- shaft
- speed reducer
- brake
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
- B60K17/00—Arrangement or mounting of transmissions in vehicles
- B60K17/04—Arrangement or mounting of transmissions in vehicles characterised by arrangement, location, or kind of gearing
- B60K17/043—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel
- B60K17/046—Transmission unit disposed in on near the vehicle wheel, or between the differential gear unit and the wheel with planetary gearing having orbital motion
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T1/00—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles
- B60T1/02—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels
- B60T1/06—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels
- B60T1/062—Arrangements of braking elements, i.e. of those parts where braking effect occurs specially for vehicles acting by retarding wheels acting otherwise than on tread, e.g. employing rim, drum, disc, or transmission or on double wheels acting on transmission parts
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/023—Mounting or installation of gears or shafts in the gearboxes, e.g. methods or means for assembly
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/029—Gearboxes; Mounting gearing therein characterised by means for sealing the gearboxes, e.g. to improve airtightness
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/08—General details of gearing of gearings with members having orbital motion
- F16H57/10—Braking arrangements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/30—Constructional features of the final output mechanisms
- F16H63/34—Locking or disabling mechanisms
Abstract
The invention provides a dynamic seal adjustable shuttle car wheel side brake reducer and a shuttle car traveling system, belonging to the technical field of shuttle car accessories. The invention integrates the brake and the hub reduction gear, brakes at the last stage, damages other links except the last stage, does not influence the braking effect of the shuttle car, improves the braking reliability, the ball cage coupling is installed through the positioning component, the hexagonal nut and the locking sheet realize the controllable adjustment of the compression amount of the spherical seal, and meanwhile, the positioning protection snap ring has the positioning and dustproof functions, thereby effectively prolonging the service life of the spherical seal.
Description
Technical Field
The invention belongs to the technical field of shuttle car accessories, and particularly discloses a dynamic seal adjustable shuttle car wheel side brake reducer and a shuttle car traveling system.
Background
The shuttle car is a trackless rubber-tyred vehicle for realizing short-distance rapid transportation in a coal mine, is used as one of important devices for short-wall mechanized mining, and has the main function of transferring coal of a continuous coal mining machine to a feeding crusher. At present, the wheel-side reducer of the shuttle car provided by the patent number ZL 201010290044.4 is mostly adopted in the speed reducing system of the shuttle car, and the speed reducing system has the following defects in practical use:
1) the wheel-side speed reducer is directly connected with a tire to drive the shuttle car to walk, wheel-side braking is not arranged, a brake is arranged on a primary speed reducer and is high-speed braking, any link of the speed reducer is damaged, the braking performance of the shuttle car can be directly influenced, and serious potential safety hazards exist;
2) the wheel-side reducer bears the steering function of the shuttle car, and is not provided with a steering mechanical limiting device, so that the interference between the steering of the tire and a transmission shaft is easily caused;
3) a mechanical overload protection device is not arranged, and the reducer is easily damaged due to overload impact.
Besides the defects, the hub reduction gear is a special reduction gear based on a ball cage coupling, and the biggest difference of the hub reduction gear, which is different from a vehicle steering drive axle, is that the ball cage coupling is arranged in the reduction gear, so that the volume of the reduction gear is reduced, but the sealing problem is also brought. Based on the large and frequent swing of the corner range of the ball cage coupling, the sealing of the ball cage coupling needs to have the following characteristics: (1) the height of the spherical lip of the sealing element is matched with the height of the outer spherical surface of the ball cage sealing cover, so that an effective and reliable sealing surface is formed; (2) the sealing element is in a compression state and a swing state in a static state, the sealing element is in a tension and compression state, and the sealing material needs smaller swing running resistance to prevent the sealing element from being broken; (3) the seal is difficult to replace and requires a long service life.
At present, the using condition and the defect of the conventional spherical seal at the position are described in detail in a ZL 200920270324.1 dynamic seal device and a wheel hub speed reducer with the device, and are not stated again.
ZL 200920270324.1 dynamic seal device and have device's wheel reduction gear discloses a dynamic seal device, and this seal device has compensation compression volume and heat dispersion, has prolonged sealed life, but the seal device that this patent relates to still has the shortcoming:
1) the connection amount between the ball cage coupler and the fixing component is not easy to adjust in the installation process, and the sealing element is easy to be compressed excessively;
2) the sealing member is exposed to the outside for a long time and is easily polluted.
Disclosure of Invention
The invention aims to provide a dynamic seal adjustable shuttle car wheel side brake reducer and a shuttle car traveling system, so as to solve the problems in the background technology.
In order to achieve the purpose, the invention provides a dynamic seal adjustable type shuttle vehicle wheel side brake reducer which comprises a wheel hub, a first bevel gear shaft, a second bevel gear shaft, a sun gear, a planet gear shaft, a planet carrier, a first shell, a second shell, an inner gear ring, a static friction plate, a dynamic friction plate, a piston, a reset screw and a reset spring, wherein the first shell is fixedly connected with the sun gear shaft; the first bevel gear is positioned in the wheel hub and fixedly provided with a first bevel gear shaft in a penetrating way, the first bevel gear shaft is rotatably connected with the wheel hub, and two ends of the first bevel gear shaft respectively extend out of the wheel hub and are connected with the transmission shaft; the second bevel gear is positioned in the wheel hub, vertically meshed with the first bevel gear, fixedly provided with a second bevel gear shaft in a penetrating way, and rotatably connected with the wheel hub and connected with the sun wheel shaft through a ball cage coupling; a sun wheel is fixed on the sun wheel shaft and is meshed with a plurality of planet wheels, the planet wheels rotate around the sun wheel, and a planet wheel shaft is fixedly arranged in each planet wheel in a penetrating manner; the planet carrier comprises a first frame body and a second frame body which are fixedly connected with two ends of a planet wheel shaft respectively, the first frame body is rotatably connected in a first shell, the first shell is connected with two groups of connecting lug plates of a wheel hub through a joint bearing and a pin shaft, the second frame body is fixedly connected with a second shell, and the first shell is connected with the second shell through a floating seal; the inner gear ring is meshed with the planet gear and fixedly arranged between the first shell and the second frame body, the outer wall of the inner gear ring is provided with a static friction plate mounting groove, and a static friction plate is mounted in the static friction plate mounting groove; the inner wall of the second shell is provided with a dynamic friction plate mounting groove, and a dynamic friction plate is mounted in the dynamic friction plate mounting groove; a plurality of static friction plates and dynamic friction plates are sequentially and alternately arranged to form a friction pair, and oil liquid is filled between the friction pairs; the piston is arranged in a sealing cavity which is formed by enclosing the first shell, the floating seal and the friction pair in a sliding manner; the reset screw penetrates through the piston in a sliding manner, the end part of the reset screw is fixed on the first shell, and a reset spring is sleeved between the nut and the piston; a hydraulic oil duct communicated with the seal cavity is arranged on the first shell, and a first end cover is arranged between the first shell and the ball cage coupler; the ball cage coupler comprises a ball cage sealing cover and a ball cage transmission assembly arranged in the ball cage sealing cover, and is respectively connected with the first end cover and a hub cover arranged on the hub through a positioning assembly; the positioning assembly comprises a hexagon nut, a locking sheet and a positioning protection clamping ring; the shaft sleeve of the ball cage sealing cover is in threaded connection with the hub cover; the hexagonal nut is sleeved on the shaft sleeve of the ball cage sealing cover in a threaded manner and abuts against the outside of the hub cover; the locking sheet is integrally formed by plastic and comprises a connecting plate and a clamping plate which are vertical to each other; the connecting plate is fixed on the hub cover, an isosceles triangular groove with the apex angle of 120 degrees is arranged at the joint of the connecting plate and the clamping plate, and the isosceles triangular groove is clamped on the nut angle of the hexagon nut; the two clamping plates are arranged on two sides of the isosceles triangular groove and are provided with inclined planes attached to the nut surface of the hexagonal nut; the positioning protection clamping ring comprises two half rings, each half ring comprises a connecting half ring and a limiting half ring which are perpendicular to each other, the connecting half rings are fixed outside the first end cover, and the limiting half rings clamp the spherical surface of the ball cage sealing cover; a spherical seal is arranged between the first end cover and the spherical surface of the ball cage sealing cover.
Furthermore, the inner wall of the spherical seal is provided with two sealing oil lips and a dustproof lip, and the outer wall of the spherical seal is provided with a sealing ring mounting groove and a V-shaped spring mounting groove; a sealing ring which is contacted with the first end cover is arranged in the sealing ring mounting groove; and a V-shaped spring is arranged in the V-shaped spring mounting groove.
Furthermore, the dynamic seal adjustable shuttle car wheel side brake reducer further comprises an annular transition connecting plate and a limiting steel sheet; the transition connecting plate surrounds the outer circumferential surface of the second frame body and corresponds to the position of the friction pair, the outer end surface of the transition connecting plate is connected with the outer end surface of the second frame body through a round pin, and a limiting ring is arranged between the inner end surface of the transition connecting plate and the inner end surface of the second frame body; the limiting steel sheet is arranged in a space enclosed by the friction pair, the second shell, the inner gear ring, the second frame body and the transition connecting plate, the second positioning pin penetrates through the transition connecting plate and the limiting steel sheet to be connected with the second shell, and the screw penetrates through the round pin and the transition connecting plate to compress the limiting steel sheet.
Furthermore, an anti-loosening structure for tightly propping the joint bearing is arranged on a connecting lug plate of the hub; the anti-loosening structure comprises a supporting cylinder and a jacking screw; the supporting cylinder is arranged in a joint bearing mounting hole of the connecting lug plate, an oil injection hole is arranged between the inner end surface and the outer end surface, an arc groove is arranged on the circumferential surface, the circumferential surface between the arc groove and the inner end surface is a threaded surface, and the circumferential surface between the arc groove and the outer end surface is a smooth surface; the outer end face of the self-supporting cylinder of the jacking screw penetrates through the arc groove, and the end part of the jacking screw is positioned in the threaded surface; an oil filling plug is arranged in the oil filling hole.
Furthermore, two limiting blocks are welded on the connecting lug plate of the hub; the limiting blocks are symmetrically arranged by taking the ball cage coupler as a symmetry axis, the positions facing the first end cover are limiting inclined planes, the limiting inclined planes incline to the hub from the first end cover, and an included angle between each limiting inclined plane and a plane perpendicular to the ball cage coupler is a tire steering angle.
Furthermore, a mechanical protection ring groove is arranged at the position of the sun wheel shaft close to the sun wheel.
Further, a second end cover is fixed on the outer end face of the second frame body; the end face, facing the second end cover, of the sun wheel shaft is provided with a positioning pin hole, a first positioning pin penetrates through the positioning pin hole, the second end cover is pressed against a pin cap of the first positioning pin, and a threaded section is arranged on the positioning pin hole, close to the hole opening.
Furthermore, the first bevel gear shaft is rotatably connected with the hub through a bearing, and two ends of the first bevel gear shaft are provided with transmission shaft connecting flanges used for being connected with the transmission shaft; the second bevel gear shaft is rotationally connected with the hub through a bearing, and a hub cover is arranged outside the bearing; the first frame body is rotatably connected in the first shell through a bearing.
The invention also provides a shuttle car walking system, wherein two groups of walking systems are longitudinally arranged on two sides of the shuttle car and comprise a motor, a primary speed reducer, a rear transmission shaft, a rear wheel edge braking speed reducer, a front transmission shaft and a front wheel edge braking speed reducer;
the parking brake and the wheel side brake speed reducer are both controlled by a hydraulic system, and the hydraulic system comprises a pressure oil source, a traveling parking module, a parking brake module and an oil unloading block; the pressure oil source comprises a hydraulic oil tank, an oil pump and an explosion-proof motor connected with the oil pump; the service brake module comprises a liquid charging valve, an energy accumulator, a service brake valve and a sequence valve; the parking brake module comprises a quick stop valve, a three-way electromagnetic valve and a flow control valve; hydraulic oil in the hydraulic oil tank is pumped to a port P of the prefill valve through an oil pump and flows into the energy accumulator, the port P of the service brake valve and an inlet of the flow control valve from a port A of the prefill valve respectively; the port A of the service brake valve is connected with the port P of the sequence valve, and the port A of the sequence valve is connected with a hydraulic oil duct of the wheel edge brake speed reducer; the outlet of the flow control valve is connected with the port P of the emergency stop valve, the port A of the emergency stop valve is respectively connected with the port P of the three-way electromagnetic valve and the parking brake, the port A of the three-way electromagnetic valve is connected with the parking brake, and the port T of the emergency stop valve and the port T of the three-way electromagnetic valve are respectively connected into the oil unloading block.
Furthermore, the wheel side brake speed reducer and the transmission shaft are connected through a connecting assembly, and the connecting assembly comprises a cross joint gland and a gland screw; two opposite connecting ends of the cross joint penetrate through the connecting holes of the transmission shaft, the other two opposite connecting ends are arranged in the semicircular holes of the transmission shaft connecting flange, and the cross joint gland is fixed on the transmission shaft connecting flange through gland screws; the parting surface of the cross-joint gland and the transmission shaft connecting flange deviates from the center plane of the cross joint and is close to the transmission shaft.
The invention has the following beneficial effects:
1. the brake and the hub reduction gear are integrally designed, the final stage brake is realized, other links except the final stage are damaged, the braking effect of the shuttle car is not influenced, the braking reliability is improved, the operation safety of the shuttle car is greatly improved, and potential safety hazards are eliminated;
2. the final-stage braking greatly reduces the action of braking impact load on a high-speed stage gear of the speed reducer and prolongs the service life of the speed reducer;
3. the steering angle of the tire is directly limited by the limiting block, the angle is accurately limited, and the interference of the tire with the transmission shaft due to overlarge steering angle is avoided;
4. the protective shaft and the sun wheel shaft are designed in a fusion mode, the design can be simplified, and the mechanical protection is realized while the structure of the wheel edge brake speed reducer is not changed
5. The ball cage coupler is installed through the positioning assembly, the hexagonal nut and the locking sheet realize that the adjustment of the compression amount of the spherical seal is controllable, and the positioning protection snap ring has the positioning and dustproof functions, so that the service life of the spherical seal is effectively prolonged.
Drawings
FIG. 1 is an external view of a dynamic seal adjustable type shuttle car wheel side brake speed reducer according to embodiment 1;
FIG. 2 is a cross-sectional view of the wheel-side brake rigger of FIG. 1 taken along a vertical centerline;
FIG. 3 is a cross-sectional view of the wheel-side brake rigger of FIG. 1 taken along a horizontal centerline;
FIG. 4 is an enlarged fragmentary view of the brake rigging section of the wheel brake rigging shown in FIG. 1;
FIG. 5 is an enlarged partial view of the locating assembly and spherical seal of the wheel brake speed reducer of FIG. 1;
FIG. 6 is a schematic view of the installation of the hex nut and locking tab of FIG. 5;
FIG. 7 is a schematic structural view of the locking tab of FIG. 5;
FIG. 8 is a schematic view of the positioning and protection collar and spherical seal installation of FIG. 5;
FIG. 9 is a schematic view of the spherical seal of FIG. 5;
FIG. 10 is an enlarged view of a loosening prevention structure in the wheel brake speed reducer of FIG. 1;
FIG. 11 is a front view of the support cylinder of FIG. 10;
FIG. 12 is a bottom view of FIG. 11;
FIG. 13 is an installation diagram of a limiting block in the wheel-side brake reducer shown in FIG. 1;
FIG. 14 is a schematic view of a left turn of the tire;
FIG. 15 is a schematic view of a right turn of the tire;
FIG. 16 is a schematic illustration of a sun gear shaft of the wheel brake retarder of FIG. 1;
FIG. 17 is a schematic view of the mounting of the sun gear shaft of FIG. 16;
FIG. 18 is a schematic view of the overall structure of the shuttle car traveling system according to embodiment 2
FIG. 19 is a hydraulic system diagram;
FIG. 20 is a schematic illustration of the connection of the wheel-brake speed reducer and the drive shaft of FIG. 18;
FIG. 21 is a view showing the positional relationship between the parting surfaces of the cross gland and the driveshaft connecting flange and the center plane of the cross.
Wherein, the names corresponding to the reference numbers are:
1-a hub; 1.1-hub cap; 2-a first bevel gear; 3-a first bevel gear shaft; 4-a second bevel gear; 5-a second bevel gear shaft; 6-sun gear shaft; 6.1-mechanical protection ring groove; 7-a sun gear; 8-a planet wheel; 9-planet wheel shaft; 10.1-first frame; 10.2-second frame body; 11-a first housing; 11.1-hydraulic oil gallery; 12-a second housing; 13-inner gear ring; 14-static friction plate; 15-dynamic friction plate; 16-a piston; 17-a reduction screw; 18-a return spring; 19-a ball cage coupling; 19.1-ball cage sealing cover; 19.2-a ball cage transmission assembly; 20-knuckle bearing; 21-a pin shaft; 22-floating seal; 23-a first end cap; 24-hexagonal nuts; 25-a locking tab; 26-positioning a protective snap ring; 27-spherical sealing; 28-sealing ring; 29-V-shaped spring; 30-a support cylinder; 30.1-arc groove; 30.2-thread flank; 30.3-smooth surface; 31-tightening the screw; 32-oil holes; 33-a filler plug; 34-a limiting block; 35-a second end cap; 36-a first locator pin; 37-a transmission shaft connecting flange; 38-ten bytes; 39-a cross-joint gland; 40-gland screws; 41-a transition connection plate; 42-a limiting steel sheet; 43-round pins; 44-a stop collar; 45-a second locating pin; 46-a screw; 47-O ring;
101-a motor; 102-a primary reducer; 103-rear drive shaft; 104-front transmission shaft; 105-rear wheel edge brake retarder; 106-front wheel edge brake retarder; 107-parking brake;
201-a source of pressurized oil; 201.1-hydraulic oil tank; 201.2-oil pump; 201.3-explosion-proof motor; 201.4-high pressure oil filter; 201.5-safety valve; 202-a traveling parking module; 202.1-liquid filling valve; 202.2-energy storage; 202.3-service brake valve; 202.4-sequence valve; 203-parking brake module; 203.1-scram valve; 203.2-three-way electromagnetic valve; 203.3-flow control valve; 204-oil unloading block.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a dynamic seal adjustable type shuttle vehicle wheel side brake reducer which comprises a wheel hub 1, a first bevel gear 2, a first bevel gear shaft 3, a second bevel gear 4, a second bevel gear shaft 5, a sun gear shaft 6, a sun gear 7, a planet gear 8, a planet gear shaft 9, a planet carrier, a first shell 11, a second shell 12, an inner gear ring 13, a static friction plate 14, a dynamic friction plate 15, a piston 16, a reset screw 17 and a reset spring 18; the first bevel gear 2 is positioned in the hub 1 and fixedly provided with a first bevel gear shaft 3 in a penetrating way, the first bevel gear shaft 3 is rotatably connected with the hub 1, and two ends of the first bevel gear shaft respectively extend out of the hub 1 and are connected with the transmission shaft; the second bevel gear 4 is positioned in the hub 1, vertically meshed with the first bevel gear 2, and fixedly provided with a second bevel gear shaft 5 in a penetrating way, and the second bevel gear shaft 5 is rotatably connected with the hub 1 and is connected with the sun gear shaft 6 through a ball cage coupling 19; a sun wheel 7 is fixed on the sun wheel shaft 6, the sun wheel 7 is meshed with a plurality of planet wheels 8, the planet wheels 8 rotate around the sun wheel 7, and a planet wheel shaft 9 is fixedly arranged in the planet wheels 8 in a penetrating way; the planet carrier comprises a first frame body 10.1 and a second frame body 10.2 which are fixedly connected with two ends of a planet wheel shaft 9 respectively, the first frame body 10.1 and the second frame body 10.2 are designed in an integral mode, the first frame body 10.1 is rotatably connected in a first shell 11, the first shell 11 is connected with two groups of connecting lug plates of a hub 1 through a joint bearing 20 and a pin shaft 21, the second frame body 10.2 is fixedly connected with a second shell 12, and the first shell 11 is connected with the second shell 12 through a floating seal 22; the inner gear ring 13 is meshed with the planet gear 8 and is fixedly arranged between the first outer shell 11 and the second frame body 10.2, the outer wall of the inner gear ring is provided with a static friction plate mounting groove, and a static friction plate 14 is mounted in the static friction plate mounting groove through a spline; the inner wall of the second outer shell 12 is provided with a dynamic friction plate mounting groove, and a dynamic friction plate 15 is mounted in the dynamic friction plate mounting groove through a spline; a plurality of static friction plates 14 and dynamic friction plates 15 are alternately arranged in sequence to form a friction pair, and oil is filled between the friction pair; the piston 16 is arranged in a sealing cavity formed by the first outer shell 11, the floating seal 22 and the friction pair in a sliding mode; a reset screw 17 penetrates through the piston 16 in a sliding manner, the end part of the reset screw is fixed on the first shell 11, and a reset spring 18 is sleeved between the nut and the piston 16; a hydraulic oil duct 11.1 communicated with the sealed cavity is arranged on the first shell 11, and a first end cover 23 is arranged between the first shell 11 and the ball cage coupler 19; the ball cage coupling 19 comprises a ball cage sealing cover 19.1 and a ball cage transmission assembly 19.2 arranged in the ball cage sealing cover 19.1, and the ball cage coupling 19 is respectively connected with a first end cover 23 and a hub cover 1.1 arranged on the hub 1 through a positioning assembly; the positioning assembly comprises a hexagon nut 24, a locking sheet 25 and a positioning protection clamping ring 26; the shaft sleeve of the ball cage sealing cover 19.1 is in threaded connection with the hub cover 1.1; the hexagonal nut 24 is sleeved on the shaft sleeve of the ball cage sealing cover 19.1 in a threaded manner and is abutted against the outside of the hub cover 1.1; the locking piece 25 is integrally formed by plastic and comprises a connecting plate and a clamping plate which are vertical to each other; the connecting plate is fixed on the hub cover 1.1, an isosceles triangular groove with an apex angle of 120 degrees is arranged at the joint of the connecting plate and the clamping plate, and the isosceles triangular groove is clamped on the nut angle of the hexagonal nut 24; the two clamping plates are arranged on two sides of the isosceles triangular groove and are provided with inclined planes attached to the nut surfaces of the hexagonal nuts 24; the positioning protection snap ring 26 comprises two half rings, wherein the half rings comprise a connecting half ring and a limiting half ring which are perpendicular to each other, the connecting half ring is fixed outside the first end cover 23, and the limiting half ring clamps the spherical surface of the ball cage sealing cover 19.1; a spherical seal 27 is provided between the spherical surfaces of the first end cap 23 and the ball cage seal cage 19.1.
The walking process of the dynamic seal adjustable shuttle wheel side brake reducer is as follows: the motor drives a first bevel gear shaft 3 in a wheel edge brake speed reducer to rotate through a first-stage speed reducer and a transmission shaft, the first bevel gear shaft is reversed through a first bevel gear 2, a sun gear 7 is driven to rotate through a ball cage coupling 19, a planet gear 8 rotates around the sun gear 7 to drive a planet carrier to rotate, a first support body 10.1 rotates in a first shell 11, a second support body 10.2 drives a second shell 12 to rotate, a dynamic friction plate 15 rotates relative to a static friction plate 14, and a tire is installed on the second shell 12.
The braking process of the dynamic seal adjustable shuttle wheel side braking speed reducer is as follows: the hydraulic system sends hydraulic oil to the position of the piston 16 through the hydraulic oil duct 11.1, pushes the piston 16 to move towards the friction pair, extrudes the static friction plate 14 and the dynamic friction plate 15, the friction force borne by the dynamic friction plate 15 is gradually increased, the rotating speed of the second shell 12 and the tire is gradually reduced, and the speed reduction is realized; the oil pressure continues to increase, the second shell 12 and the tire stop rotating, and braking is realized; the brake is released and hydraulic oil flows back to the hydraulic system and the return spring 18 pushes the piston 16 to return.
Ball cage sealed cowling 19.1 and wheel hub lid 1.1 threaded connection, the accessible is adjusted the length adjustment of ball cage sealed cowling 19.1 and is to the sealed 27 compression capacity of spherical, locking plate 25 fuses the V profile for the plane, when ball cage sealed cowling 19.1 is rotatory, two cardboard both can block on hexagon nut 24's nut angle, also can laminate on hexagon nut 24's nut face, make ball cage sealed cowling 19.1's angle of regulation be 30 degrees, angle of regulation's reduction, can effectively improve the regulation precision, prevent that spherical seal 27 from being oppressed excessively, extension spherical seal 27's life. The positioning protection snap ring 26 can prevent external pollutants from damaging the seal, and adopts a half-ring design, so that the mounting and the dismounting are convenient.
Furthermore, the inner wall of the spherical seal 27 is provided with two sealing oil lips and a dustproof lip, so that the sealing reliability is effectively improved, and the outer wall is provided with a sealing ring mounting groove and a V-shaped spring mounting groove; a sealing ring 28 which is contacted with the first end cover 23 is arranged in the sealing ring mounting groove; v-shaped spring 29 is installed in the V-shaped spring installation groove, and V-shaped spring 29 is a compensator, compensates the compression amount, and compensation ability is strong. The spherical seal 27 is made of polytetrafluoroethylene material and has high wear resistance. When the amount of wear of the spherical seal 27 increases and the V-spring 29 is insufficient to compensate for the amount of compression, the amount of seal compression is readjusted by adjusting the length of the threaded connection of the ball cage seal cover 19.1 to the hub cap 1.1.
Furthermore, an anti-loose structure for tightly propping the joint bearing 20 is arranged on a connecting lug plate of the hub 1; the anti-loosening structure comprises a supporting cylinder 30 and a jacking screw 31; the supporting cylinder 30 is arranged in a joint bearing mounting hole of the connecting lug plate, an oil filling hole 32 is arranged between the inner end surface and the outer end surface, an arc groove 30.1 is arranged on the circumferential surface, the circumferential surface between the arc groove 30.1 and the inner end surface is a threaded surface 30.2, and the circumferential surface between the arc groove and the outer end surface is a smooth surface 30.3; the jacking screw 31 penetrates through the arc groove 30.1 from the outer end face of the supporting cylinder, and the end part is positioned in the thread face 30.2; an oil plug 33 is arranged in the oil filling hole. After the supporting cylinder 30 is installed in the joint bearing mounting hole, the supporting cylinder contacts and pre-tightens the joint bearing 20, and the threaded surface 30.2 of the supporting cylinder 30 is extruded by the tightening screw 31 to deform and closely fit with the inner wall of the joint bearing mounting hole, so that the anti-loosening effect is achieved. This anti loosening structure can reuse many times under the prerequisite that can not destroy support cylinder 30, brings conveniently for the maintenance of reduction gear, maintenance.
In the walking steering device of the rubber-tyred shuttle car disclosed in patent No. ZL 200710062217.5, the steering angle of the tire is limited by the stroke of the steering cylinder, but the walking steering device has the following disadvantages in practical use: 1) the limit of the tire steering angle is controlled by a plurality of links (the stroke of a steering oil cylinder, the steering block, a tie rod, a longitudinal pull rod, a steering arm, the rigidity of a tire and the like), and the tire steering angle is overlarge due to the accumulation of processing and manufacturing tolerances and uncontrollable factors of the steering rigidity of a rubber tire, interferes with a transmission shaft, causes the damage of the transmission shaft and aggravates the abrasion of the tire; 2) the steering angle of the tire is not controllable, the arc track of the inner wheel and the arc track of the outer wheel of the wheel deviate from the design value under the working condition of the maximum steering angle, the driving wheels on two sides are easy to slip, the abrasion of the tire is serious, the service life of the tire is shortened, and meanwhile, the potential safety hazard that the vehicle is out of control exists. In order to improve the above disadvantages, in this embodiment, two limiting blocks 34 are welded on the connecting ear plate of the hub 1; the limiting blocks 34 are symmetrically arranged by taking the ball cage coupler 19 as a symmetry axis, the positions facing the first end cover 23 are limiting inclined planes, the limiting inclined planes incline from the first end cover 23 to the hub 1, and an included angle between the limiting inclined planes and a plane perpendicular to the ball cage coupler 19 is a tire steering angle. The tire steering angle is directly limited by the limiting block 34, the angle is limited accurately, the interference of the tire with a transmission shaft due to the overlarge steering angle is avoided, the tire steering angle can be controlled accurately, the arc track of the inner side wheel and the arc track of the outer side wheel of the wheel meet the design value under the working condition of the maximum steering angle, the driving wheels on two sides are prevented from sliding, and the service life of the tire is prolonged.
Further, the limiting block 34 is a right-angled trapezoidal block, the inclined plane of the right-angled trapezoidal block is a limiting inclined plane, the long bottom surface faces the central line of the connecting ear plate, and the short bottom surface faces the outer side of the connecting ear plate. Since the limit block 34 and the first end cap 23 may frequently collide with each other, the limit slope is subjected to a surface rolling reinforcement process. The material of the connecting lug plate is alloy cast steel, the limiting block 34 is made of a material similar to the alloy cast steel, and a special high-strength welding material is adopted for welding.
Further, a mechanical protection ring groove 6.1 is arranged at the position of the sun gear shaft 6 close to the sun gear 7. When the wheel edge brake speed reducer is subjected to impact load, the sun wheel shaft 6 is broken at the mechanical protection ring groove 6.1, and serious damage such as tooth beating and the like or secondary damage can not be caused. The protective shaft and the sun wheel shaft 6 are designed in a fusion mode, so that the design can be simplified, and mechanical protection is realized while the structure of the wheel edge brake speed reducer is not changed. The mechanical protection ring groove 6.1 adopts a large circular arc design, sharp edges are blunted, stress concentration is avoided, shot blasting is adopted to strengthen the surface, and stress is eliminated.
Further, a second end cap 35 is fixed on the outer end face of the second frame body 10.2; the end face, facing the second end cover 35, of the sun gear shaft 6 is provided with a positioning pin hole, a first positioning pin 36 penetrates through the positioning pin hole, the second end cover 35 is pressed against a pin cap of the first positioning pin 36, and a threaded section is arranged on the positioning pin hole close to the hole opening. After the sun gear shaft 6 is broken, the second end cap 35 is removed, the sun gear shaft 6 can be replaced by connecting a screw rod with the threaded section, and the operation is easy.
Further, the first bevel gear shaft 3 is rotatably connected with the hub 1 through a bearing, and two ends of the first bevel gear shaft are provided with a transmission shaft connecting flange 37 for connecting with a transmission shaft; the second bevel gear shaft 5 is rotationally connected with the hub 1 through a bearing, and a hub cover 1.1 is arranged outside the bearing; the first frame body 10.1 is rotatably connected in the first housing 11 through a bearing.
Furthermore, the dynamic seal adjustable shuttle car wheel side brake reducer further comprises an annular transition connecting plate 41 and a limiting steel sheet 42; the transition connecting plate 41 surrounds the outer circumferential surface of the second frame body 10.2 and corresponds to the position of the friction pair, the outer end surface of the transition connecting plate 41 is connected with the outer end surface of the second frame body 10.2 through a round pin 43, and a limiting ring 44 is arranged between the inner end surface of the transition connecting plate 41 and the inner end surface of the second frame body 10.2; the limiting steel sheet 42 is arranged in a space enclosed by the friction pair, the second shell 12, the inner gear ring 13, the second frame body 10.2 and the transition connecting plate 41, the second positioning pin 45 penetrates through the transition connecting plate 41 and the limiting steel sheet 42 to be connected with the second shell 12, and the screw 46 penetrates through the round pin 43 and the transition connecting plate 41 to press the limiting steel sheet 42. The planet carrier and the transition connecting plate 41 are designed in a split mode, so that the wheel side brake speed reducer can be conveniently installed and maintained, the friction plate can be replaced only by disassembling a tire, and the whole wheel side brake speed reducer is prevented from being replaced due to abrasion of the friction plate.
Further, an O-ring 47 for preventing leakage of the hydraulic oil is provided between the piston 16 and the first housing 11.
Example 2
The embodiment provides a shuttle car walking system, two groups of walking systems are longitudinally arranged on two sides of a shuttle car and comprise a motor 101, a primary speed reducer 102, a rear transmission shaft 103, a front transmission shaft 104, a rear wheel edge braking speed reducer 105 and a front wheel edge braking speed reducer 106, the motor 101 is connected with the primary speed reducer 102, the primary speed reducer 102 is connected with the rear wheel edge braking speed reducer 105 through the rear transmission shaft 103, the rear wheel edge braking speed reducer 105 is connected with the front wheel edge braking speed reducer 106 through the front transmission shaft 104, and a parking brake 107 is arranged on the primary speed reducer 102; the rear wheel side brake reducer 105 and the front wheel side brake reducer 106 are both the dynamic seal adjustable shuttle vehicle wheel side brake reducer described in embodiment 1;
the parking brake 107 and the wheel side brake speed reducer are controlled by a hydraulic system, and the hydraulic system comprises a pressure oil source 201, a traveling and parking module 202, a parking brake module 203 and an oil unloading block 204; the pressure oil source 201 comprises a hydraulic oil tank 201.1, an oil pump 201.2 and an explosion-proof motor 201.3 connected with the oil pump 201.2; the service brake module 202 comprises a charging valve 202.1, an accumulator 202.2, a service brake valve 202.3 and a sequence valve 202.4; the parking brake module 203 comprises an emergency stop valve 203.1, a three-way electromagnetic valve 203.2 and a flow control valve 203.3; hydraulic oil in the hydraulic oil tank 201.1 is pumped to a port P of the charging valve 202.1 through the oil pump 201.2, and flows into the energy accumulator 202.2, the port P of the service brake valve 202.3 and an inlet of the flow control valve 203.3 from a port A of the charging valve 202.1 respectively; the port A of the service brake valve 202.3 is connected with the port P of the sequence valve 202.4, and the port A of the sequence valve 202.4 is connected with a hydraulic oil duct 11.1 of the wheel edge brake speed reducer; the outlet of the flow control valve 203.3 is connected with the P port of the emergency stop valve 203.1, the A port of the emergency stop valve 203.1 is respectively connected with the P port of the three-way electromagnetic valve 203.2 and the parking brake 107, the A port of the three-way electromagnetic valve 203.2 is connected with the parking brake 107, and the T port of the emergency stop valve 203.1 and the T port of the three-way electromagnetic valve 203.2 are respectively connected with the oil unloading block 204.
The parking brake 107 employed in the present embodiment is a spring brake, hydraulic release type brake, and the operation of the hydraulic system is as follows: during parking braking, the port P and the port A of the emergency stop valve 203.1 are disconnected, the port T is connected with the port A, and pressure oil for releasing braking in a brake releasing cavity of the parking brake 107 flows into the oil discharging block 204 through the port A and the port T of the emergency stop valve 203.1 or the port A and the port T of the three-way electromagnetic valve 203.2; during service braking, pressure oil flows in from the port P of the service brake valve 202.3 and flows out from the port A, when the output pressure is larger than the preset pressure, the pressure oil flows in from the port P of the sequence valve 202.4 and flows out from the port A to reach the hydraulic oil duct 11.1 of the wheel edge brake speed reducer, and when a fault occurs, the energy accumulator 202.2 can be used as a pressure oil source, so that the reliability of the system is improved. The hydraulic system separately brakes the wheel side brake reducer and the parking brake 107, and improves the service life and reliability of the wheel side brake reducer.
Further, the pressure oil source 201 also comprises a high-pressure oil filter 201.4 and a safety valve 201.5, the high-pressure oil filter 201.4 is arranged between the oil pump 201.2 and the liquid filling valve 202.1, an oil pipe is led out between the high-pressure oil filter 201.4 and the liquid filling valve 202.1 and is connected to an inlet of the safety valve 201.5, and an outlet of the safety valve 201.5 is connected with the hydraulic oil tank 201.1.
Further, the T port of the charging valve 202.1, the service brake valve 202.3, the sequence valve 202.4 and the oil discharging block 204 are all connected with an oil return tank.
Further, the wheel side brake speed reducer and the transmission shaft are connected through a connecting assembly, and the connecting assembly comprises a cross joint 38, a cross joint gland 39 and a gland screw 40; two opposite connecting ends of the cross joint 38 penetrate through the connecting holes of the transmission shaft, the other two opposite connecting ends are arranged in the semicircular holes of the transmission shaft connecting flange 37, and the cross joint gland 39 is fixed on the transmission shaft connecting flange 37 through a gland screw 40; the parting surfaces of the cross gland 39 and the transmission shaft connecting flange 37 (i.e. the connecting surface of the cross gland 39 and the transmission shaft connecting flange 37 in fig. 20) deviate from the central surface of the cross 38 and are close to the transmission shaft, so that the parting surfaces of the cross gland 39 and the transmission shaft connecting flange 37 can avoid the cross rotation to generate circumferential force, the tangential force for transmitting torque is completely borne by the transmission shaft connecting flange 37, the cross gland 39 only provides pressing force for the cross 38, the gland screw 40 bears tensile stress, and does not bear torsional shearing force any more, the gland screw 40 is prevented from being cut off, and the anti-loosening effect of the gland screw 40 is obviously improved.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A dynamic seal adjustable shuttle car wheel side brake reducer is characterized by comprising a wheel hub, a first bevel gear shaft, a second bevel gear shaft, a sun gear, a planet gear shaft, a planet carrier, a first shell, a second shell, an inner gear ring, a static friction plate, a dynamic friction plate, a piston, a reset screw and a reset spring;
the first bevel gear is positioned in the wheel hub, a first bevel gear shaft is fixedly arranged in a penetrating manner, the first bevel gear shaft is rotatably connected with the wheel hub, and two ends of the first bevel gear shaft respectively extend out of the wheel hub and are connected with the transmission shaft;
the second bevel gear is positioned in the wheel hub, vertically meshed with the first bevel gear, fixedly provided with a second bevel gear shaft in a penetrating way, and rotatably connected with the wheel hub and connected with the sun wheel shaft through a ball cage coupling;
a sun wheel is fixed on the sun wheel shaft and is meshed with a plurality of planet wheels, the planet wheels rotate around the sun wheel, and a planet wheel shaft is fixedly arranged in each planet wheel in a penetrating manner;
the planet carrier comprises a first frame body and a second frame body which are fixedly connected with two ends of a planet wheel shaft respectively, the first frame body is rotatably connected in a first shell, the first shell is connected with two groups of connecting lug plates of a wheel hub through a joint bearing and a pin shaft, the second frame body is fixedly connected with a second shell, and the first shell is connected with the second shell through a floating seal;
the inner gear ring is meshed with the planet gear and fixedly arranged between the first shell and the second frame body, the outer wall of the inner gear ring is provided with a static friction plate mounting groove, and a static friction plate is mounted in the static friction plate mounting groove;
the inner wall of the second shell is provided with a dynamic friction plate mounting groove, and a dynamic friction plate is mounted in the dynamic friction plate mounting groove;
a plurality of static friction plates and dynamic friction plates are sequentially and alternately arranged to form a friction pair, and oil liquid is filled between the friction pairs;
the piston is arranged in a sealing cavity which is formed by enclosing the first shell, the floating seal and the friction pair in a sliding manner;
the reset screw penetrates through the piston in a sliding mode, the end portion of the reset screw is fixed on the first shell, and a reset spring is sleeved between the nut and the piston;
a hydraulic oil duct communicated with the seal cavity is arranged on the first shell, and a first end cover is arranged between the first shell and the ball cage coupler;
the ball cage coupler comprises a ball cage sealing cover and a ball cage transmission assembly arranged in the ball cage sealing cover, and is respectively connected with the first end cover and a hub cover arranged on the hub through a positioning assembly;
the positioning assembly comprises a hexagon nut, a locking sheet and a positioning protection clamping ring;
the shaft sleeve of the ball cage sealing cover is in threaded connection with the hub cover;
the hexagonal nut is sleeved on the shaft sleeve of the ball cage sealing cover in a threaded manner and abuts against the outside of the hub cover;
the locking sheet is integrally formed by plastic and comprises a connecting plate and a clamping plate which are perpendicular to each other;
the connecting plate is fixed on the hub cover, an isosceles triangular groove with an apex angle of 120 degrees is arranged at the joint of the connecting plate and the clamping plate, and the isosceles triangular groove is clamped on a nut angle of the hexagon nut;
the two clamping plates are arranged on two sides of the isosceles triangular groove and are provided with inclined planes attached to the nut surface of the hexagonal nut;
the positioning protection clamping ring comprises two half rings, each half ring comprises a connecting half ring and a limiting half ring which are perpendicular to each other, the connecting half rings are fixed outside the first end cover, and the limiting half rings clamp the spherical surface of the ball cage sealing cover;
and a spherical surface seal is arranged between the first end cover and the spherical surface of the ball cage sealing cover.
2. The dynamic-seal adjustable shuttle car wheel rim brake reducer according to claim 1, wherein the inner wall of the spherical seal is provided with two sealing oil lips and a dust lip, and the outer wall is provided with a seal ring mounting groove and a V-shaped spring mounting groove;
a sealing ring which is contacted with the first end cover is arranged in the sealing ring mounting groove;
and a V-shaped spring is arranged in the V-shaped spring mounting groove.
3. The dynamic-seal adjustable shuttle car wheel-side brake reducer according to claim 2, further comprising an annular transition connecting plate and a limiting steel sheet;
the transition connecting plate surrounds the outer circumferential surface of the second frame body and corresponds to the position of the friction pair, the outer end surface of the transition connecting plate is connected with the outer end surface of the second frame body through a round pin, and a limiting ring is arranged between the inner end surface of the transition connecting plate and the inner end surface of the second frame body;
the limiting steel sheet is arranged in a space enclosed by the friction pair, the second shell, the inner gear ring, the second frame body and the transition connecting plate, the second positioning pin penetrates through the transition connecting plate and the limiting steel sheet to be connected with the second shell, and the screw penetrates through the round pin and the transition connecting plate to compress the limiting steel sheet.
4. The dynamic-seal adjustable shuttle car wheel-side brake reducer according to claim 3, wherein the connecting lug plate of the wheel hub is provided with an anti-loose structure for tightly propping against the knuckle bearing;
the anti-loosening structure comprises a supporting cylinder and a jacking screw;
the supporting cylinder is arranged in a joint bearing mounting hole of the connecting lug plate, an oil filling hole is arranged between the inner end surface and the outer end surface, an arc groove is arranged on the circumferential surface, the circumferential surface between the arc groove and the inner end surface is a threaded surface, and the circumferential surface between the arc groove and the outer end surface is a smooth surface;
the outer end face of the self-supporting cylinder of the jacking screw penetrates through the arc groove, and the end part of the jacking screw is positioned in the threaded surface;
an oil filling plug is arranged in the oil filling hole.
5. The dynamic-seal adjustable shuttle car wheel-side brake reducer according to claim 4, wherein two limiting blocks are welded on the connecting lug plate of the wheel hub;
the limiting block is symmetrically arranged by taking the ball cage coupler as a symmetry axis, the position facing the first end cover is a limiting inclined plane, the limiting inclined plane is inclined towards the hub by the first end cover, and an included angle between the limiting inclined plane and a plane perpendicular to the ball cage coupler is a tire steering angle.
6. The dynamically sealed adjustable shuttle car wheel side brake retarder of claim 5, wherein the sun gear shaft is provided with a mechanical protection ring groove near the sun gear.
7. The dynamic seal adjustable shuttle wheel rim brake retarder according to claim 6, wherein a second end cap is fixed on the outer end face of the second frame body;
the end face, facing the second end cover, of the sun wheel shaft is provided with a positioning pin hole, a first positioning pin penetrates through the positioning pin hole, the second end cover is pressed against a pin cap of the first positioning pin, and a threaded section is arranged on the positioning pin hole, close to the hole opening.
8. The dynamic-seal adjustable shuttle car wheel-side brake reducer according to claim 7, wherein the first bevel gear shaft is rotatably connected with the wheel hub through a bearing, and transmission shaft connecting flanges for connecting with the transmission shaft are arranged at two ends of the first bevel gear shaft;
the second bevel gear shaft is rotationally connected with the hub through a bearing, and a hub cover is arranged outside the bearing;
the first frame body is rotatably connected in the first shell through a bearing.
9. A shuttle car walking system is characterized in that two groups of walking systems are longitudinally arranged on two sides of a shuttle car and comprise a motor, a primary speed reducer, a rear transmission shaft, a rear wheel side braking speed reducer, a front transmission shaft and a front wheel side braking speed reducer, wherein the motor is connected with the primary speed reducer, the primary speed reducer is connected with the rear wheel side braking speed reducer through the rear transmission shaft, the rear wheel side braking speed reducer is connected with the front wheel side braking speed reducer through the front transmission shaft, a parking brake is arranged on the primary speed reducer, and the rear wheel side braking speed reducer and the front wheel side braking speed reducer are both provided with a dynamic seal adjustable shuttle car wheel side braking speed reducer according to any one of claims 1-8;
the parking brake and the wheel side brake speed reducer are both controlled by a hydraulic system, and the hydraulic system comprises a pressure oil source, a traveling parking module, a parking brake module and an oil unloading block;
the pressure oil source comprises a hydraulic oil tank, an oil pump and an explosion-proof motor connected with the oil pump;
the service brake module comprises a liquid charging valve, an energy accumulator, a service brake valve and a sequence valve;
the parking brake module comprises a quick stop valve, a three-way electromagnetic valve and a flow control valve;
hydraulic oil in the hydraulic oil tank is pumped to a port P of the prefill valve through an oil pump and flows into the energy accumulator, the port P of the service brake valve and an inlet of the flow control valve from a port A of the prefill valve respectively;
the port A of the service brake valve is connected with the port P of the sequence valve, and the port A of the sequence valve is connected with a hydraulic oil duct of the wheel edge brake speed reducer;
the outlet of the flow control valve is connected with the port P of the emergency stop valve, the port A of the emergency stop valve is respectively connected with the port P of the three-way electromagnetic valve and the parking brake, the port A of the three-way electromagnetic valve is connected with the parking brake, and the port T of the emergency stop valve and the port T of the three-way electromagnetic valve are respectively connected into the oil unloading block.
10. The shuttle car travel system of claim 9 wherein the wheel brake rigger and the drive shaft are connected by a connection assembly comprising a ten-joint, a cross gland and a gland screw;
two opposite connecting ends of the cross joint penetrate through the connecting holes of the transmission shaft, the other two opposite connecting ends are arranged in the semicircular holes of the transmission shaft connecting flange, and the cross joint gland is fixed on the transmission shaft connecting flange through gland screws;
the parting surface of the cross-joint gland and the transmission shaft connecting flange deviates from the center plane of the cross joint and is close to the transmission shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011526240.7A CN112519571B (en) | 2020-12-22 | 2020-12-22 | Dynamic seal adjustable shuttle car wheel edge brake speed reducer and shuttle car traveling system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011526240.7A CN112519571B (en) | 2020-12-22 | 2020-12-22 | Dynamic seal adjustable shuttle car wheel edge brake speed reducer and shuttle car traveling system |
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| CN112519571B CN112519571B (en) | 2022-01-25 |
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| CN112519571B (en) | 2022-01-25 |
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