CN202743227U - Braking device of heavy-duty self-dumping truck for mines - Google Patents
Braking device of heavy-duty self-dumping truck for mines Download PDFInfo
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- CN202743227U CN202743227U CN 201220273469 CN201220273469U CN202743227U CN 202743227 U CN202743227 U CN 202743227U CN 201220273469 CN201220273469 CN 201220273469 CN 201220273469 U CN201220273469 U CN 201220273469U CN 202743227 U CN202743227 U CN 202743227U
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Abstract
The utility model belongs to the field of rigid self-dumping trucks for mines and particularly relates to a braking device of a heavy-duty self-dumping truck for mines. The braking device provided by the utility model comprises an oil tank, a braking pump, a braking multi-path valve, a pedal braking valve and a front brake, wherein an oil suction opening of the braking pump is connected with the oil tank, an oil outlet is connected with the braking multi-path valve through a filter, the braking multi-path valve is respectively connected with a parking braking valve and a braking pedal valve, the braking pedal valve is respectively connected with the front brake and the parking braking valve, and the parking braking valve is respectively connected with a back brake and a parking brake. The braking device has the advantages that through the arrangement of the braking multi-path valve, the parking braking valve and a loading braking valve, the braking device of the heavy-duty self-dumping truck for mines can realize the functions of travel braking, parking braking, loading braking, emergency braking and automatic braking, and the safety and the reliability of vehicles are effectively improved.
Description
Technical field
The utility model belongs to the self-discharging vehicle for rigid mining field, is specifically related to a kind of heavy mining truck brake equipment.
Background technology
Heavy mining truck belongs to haul truck, be mainly used in the transportation of large surface mine ore, heavy mining truck mainly is comprised of rigid-frame, driving engine, transmission gearbox, back axle assembly, operator's compartment assembly, brake equipment etc., wherein brake equipment is the important component part of heavy mining truck, especially the safety and reliability of dumping car is had vital impact.
Present little tonnage non-road dump truck generally adopts air braking systems, the large-tonnage haul truck uses hydraulic brake system, air braking systems makes pressurized air enter air-actuator to make car brakeing by stepping on the brake pedal valve, because the air braking systems element is more, pipeline connects complexity and lock torque is little, so be not suitable for using at the large-tonnage dumping car.The hydraulic brake system lock torque is large, compact conformation, generally use on the large-tonnage dumping car, but heavy mining truck is operated in glory-hole mostly, and the gradient is large, bend is many, therefore the safety and reliability of brake equipment is had higher requirement.
Summary of the invention
The purpose of this utility model is to provide a kind of safe and reliable, car brakeing to be quick on the draw, rapidly, and a kind of heavy mining truck brake equipment with the braking of loading and autobrake function.
Technical solution is:
The utility model comprises: fuel tank, brake pump, braking multiway valve, pedal brake valve, front brake, and the oil suction of brake pump is connected with fuel tank, and oil outlet is connected with the braking multiway valve through filter; Described braking multiway valve is connected with braking valve for vehicle, brake pedal valve respectively, and described brake pedal valve is connected with braking valve for vehicle with front brake respectively, and described braking valve for vehicle is connected with Parking Brake with rear brake respectively.
Described braking multiway valve is provided with P, PY, ACC1, ACC2, PS1, PS2, PS3, A, B, P1, T mouth, braking multiway valve inside is provided with solenoid directional control valve, rear brake accumulator check valve, front brake energy storage device check valve, rear brake accumulator check valve outlet is connected with the import of solenoid directional control valve, the return opening of solenoid directional control valve is connected with the T mouth of braking multiway valve, the outlet of solenoid directional control valve be connected with A, the B mouth of braking multiway valve respectively; The oil inlet of rear brake accumulator check valve, front brake energy storage device check valve with respectively with the braking multiway valve the P mouth be connected; ACC1, the ACC2 mouth of braking multiway valve are connected with energy storage respectively, PS1, PS2, the PS3 mouth of braking multiway valve are separately installed with braking during standstill pressure switch, rear brake accumulator pressure switch, front brake accumulator pressure switch, and the braking during standstill pressure switch is output signal when removing braking during standstill; Rear brake accumulator pressure switch, front brake accumulator pressure switch output signal when energy storage pressure is lower than setting value, it is electric that the interior solenoid directional control valve of braking multiway valve is got, and makes vehicle implement autobrake.
Described braking valve for vehicle is provided with RB, RB1, RT, P2, RB2, TEST mouth, braking valve for vehicle inside comprises reducing valve, cutoff port, back pressure valve and shuttle valve, the import of reducing valve is connected with P2 mouth on the braking valve for vehicle, and the outlet of reducing valve is connected with the import of cutoff port through filter screen; The cutoff port outlet reaches with the back pressure valve import respectively, the first import of shuttle valve is connected, the outlet of back pressure valve is connected with RT mouth on the braking valve for vehicle, the second import of shuttle valve is connected with RB mouth on the braking valve for vehicle, the outlet of shuttle valve is connected with RB1 mouth on the braking valve for vehicle, and the TEST mouth on the braking valve for vehicle is connected with the RB1 mouth.
Also be provided with the loading brake activation valve between the further pedal brake valve of the utility model and the front brake, front-wheel brake is not braked in the process of charging and discharging, rear wheel brake, parking brake are implemented braking, and described loading brake activation valve also is provided with " loading braking " switch.
The utility model is further braked between the Px mouth of A mouth on the multiway valve and pedal brake valve and also is provided with directional control valve, so that dumping car pressure oil when emergency braking enters brake pedal valve pilot control opening through the direction control cock, promote brake pedal valve delivery pressure front-wheel, trailing wheel are braked simultaneously.
The PS4 of the further pedal brake valve of the utility model, PS5 mouth are separately installed with rear brake-pressure switch and front brake-pressure switch, pressure switch output signal when the brake pedal valve is worked.
Brake pump described in the utility model is constant pressure variable displacement pump, and the propulsion source of steady pressure is provided for brake equipment; Fuel tank is the device of storage hydraulic oil; Filter plays a part hydraulic oil filtering is cleaned; Comprise a solenoid directional control valve and two check valves in the braking multiway valve, solenoid directional control valve gets electric rear releasing braking during standstill, dumping car can travel, arranging of two check valves can prevent front wheel brake hydraulic oil and the mutual interference of trailing wheel brake fluid pressure oil phase, brake simultaneously multiway valve and also be connected with two energy storages, as the auxiliary power source of dumping car brake equipment; The brake pedal valve is the executive component of car brakeing, can also can be controlled by pilot control oil by manual operation, and the fluid of brake pedal valve output enters front-wheel brake respectively and rear wheel brake is braked vehicle; Comprise reducing valve, filter screen, cutoff port, back pressure valve, shuttle valve in the braking valve for vehicle, reducing valve will enter the fluid decompression of Parking Brake, filter screen, cutoff port, back pressure valve make the fluid in the rear wheel brake remain with certain pressure, can reduce braking time when braking next time, and braking rapidly, reliably.
Description of drawings
Fig. 1 is the utility model brake equipment engine off, braking during standstill application state hydraulic schematic diagram;
Fig. 2 is the utility model brake equipment engine running, braking during standstill disarm state hydraulic schematic diagram;
Fig. 3 is the utility model brake equipment engine running, service brake state hydraulic schematic diagram;
Fig. 4 is the utility model brake equipment engine running, the emergency braking condition hydraulic schematic diagram.
Wherein: 1, fuel tank; 2, brake pump; 3, filter; 4, braking multiway valve; 5, braking valve for vehicle; 6, brake pedal valve; 7, directional control valve; 8, load brake activation valve; 9, front-wheel brake; 10, rear wheel brake; 11, Parking Brake; 12, energy storage; 13, braking during standstill pressure switch; 14, rear brake accumulator pressure switch; 15, front brake accumulator pressure switch; 16, rear brake-pressure switch; 17, front brake-pressure switch, braking multiway valve 4 inside comprise: 18, solenoid directional control valve; 19, rear brake accumulator check valve; 20, front brake accumulator check valve, braking valve for vehicle 5 inside comprise: 21, reducing valve; 22, filter screen, 23, cutoff port; 24, back pressure valve, 25, shuttle valve.
The specific embodiment
Below in conjunction with accompanying drawing technical solutions of the utility model are described in detail:
Referring to figs. 1 through shown in Figure 4, the utility model fuel tank 1, brake pump 2, filter 3, braking multiway valve 4, braking valve for vehicle 5, brake pedal valve 6, directional control valve 7, loading brake activation valve 8, front-wheel brake 9, rear wheel brake 10, Parking Brake 11, energy storage 12, braking during standstill pressure switch 13, rear brake accumulator pressure switch 14, front brake accumulator pressure switch 15, rear brake-pressure switch 16, front brake-pressure switch 17, the oil suction of brake pump 2 is connected with fuel tank 1, and oil outlet is connected with braking multiway valve 4 through filter 2; Described braking multiway valve 4 is connected with braking valve for vehicle 5, brake pedal valve 6 respectively, and described brake pedal valve 6 is connected with braking valve for vehicle with front brake 9 respectively and is connected, and described braking valve for vehicle 5 is connected with Parking Brake with rear brake 10 respectively and is connected.
Braking multiway valve 4 is provided with P, PY, ACC1, ACC2, PS1, PS2, PS3, A, B, P1, T mouth, braking multiway valve 4 inside are provided with solenoid directional control valve 18, rear brake accumulator check valve 19, front brake energy storage device check valve 20, rear brake accumulator check valve 19 outlets are connected with the import of solenoid directional control valve 18, the return opening of solenoid directional control valve 18 is connected with the T mouth of braking multiway valve 4, the outlet of solenoid directional control valve 18 be connected with the A, the B that brake multiway valve 4 respectively; The oil inlet of rear brake accumulator check valve 19, front brake energy storage device check valve 20 with respectively with the braking multiway valve 4 the P mouth be connected.
The B mouth of braking multiway valve 4 is connected with the P2 mouth of braking valve for vehicle 5, PY, the P1 mouth of braking multiway valve 4 are connected with Py, the Pz mouth of brake pedal valve 6 respectively, the B1 mouth of brake pedal valve 6 is through loading brake activation valve 8 and front brake 9, and the RB mouth that the B2 mouth of brake pedal valve 6 is connected with braking valve for vehicle connects.
In order to improve the peaceful performance of vehicle, between the Px mouth of the A mouth of braking multiway valve 4 and pedal brake valve 6, also be provided with directional control valve 7; The B mouth of braking multiway valve 4 connects the P2 mouth of braking valve for vehicle; The T mouth connects fuel tank 1; ACC1, the ACC2 mouth of braking multiway valve 4 are connected respectively connections with energy storage, PS1, PS2, the PS3 mouth of braking multiway valve 4 are separately installed with braking during standstill pressure switch 13, rear brake accumulator pressure switch 14, front brake accumulator pressure switch 15.
When dumping car will travel, unclamp in the operator's compartment " urgent/Parking " brake switch make solenoid directional control valve 18 electric, pressure oil enters Parking Brake 11 removes braking during standstill, dumping car can travel.The effect of rear brake accumulator check valve 19 and front brake accumulator check valve 20 is to prevent front wheel brake hydraulic oil and the mutual interference of trailing wheel brake fluid pressure oil phase.
The utility model braking valve for vehicle 5 is provided with RB, RB1, RT, P2, RB2, TEST mouth, braking valve for vehicle inside comprises reducing valve 21, cutoff port 23, back pressure valve 24 and shuttle valve 25, the import of reducing valve 21 is connected with P2 mouth on the braking valve for vehicle 5, the effect of reducing valve 21 is that the setting value that reduces pressure of the high pressure oil with system is applied to Parking Brake 11, and the outlet of reducing valve 21 is connected through the import of filter screen 22 with cutoff port 23; Cutoff port 23 outlets reach with back pressure valve 24 imports respectively, the first import of shuttle valve 25 connects, the outlet of back pressure valve 24 is connected with RT mouth on the braking valve for vehicle 5, the second import of shuttle valve 25 is connected with RB mouth on the braking valve for vehicle 5, the outlet of shuttle valve 25 is connected with RB1 mouth on the braking valve for vehicle 5, TEST mouth on the braking valve for vehicle 5 is connected with the RB1 mouth, the effect of filter screen 22 is that the fluid cleaning is prevented that cutoff port 23 from stopping up, cutoff port 23, back pressure valve 24, shuttle valve 25 makes the fluid in the rear wheel brake remain with certain pressure, can reduce braking time when braking next time, makes braking reliable rapidly.
The B2 mouth that the RB mouth of braking valve for vehicle 5 is connected with the brake pedal valve connects, and the RT mouth is connected with hydraulic reservoir 1, and RB1, RB2 mouth are connected with rear wheel brake respectively, Parking Brake 11 connects, and the TEST mouth is for detection of the pressure of rear braking fluid.
Also be provided with between pedal brake valve 6 and the front brake 9 and load brake activation valve 8; The PS4 of described pedal brake valve 6, PS5 mouth are separately installed with rear brake-pressure switch 16 and front brake-pressure switch 17.
The B1 mouth of brake pedal valve 6 connects the LP mouth that loads brake activation valve 8, the LA mouth of Px mouth closure control cock 7, directional control valve 7 is by transmission gearbox pressure control, when dumping car turn round, makes LA mouth and the connection of LP mouth from the valve core movement of the pressure oil pushing direction control cock 7 of transmission gearbox; After dumping car was flame-out, the spring of directional control valve 7 will promote valve core movement was communicated with LA mouth LT.
The below describes working process of the present utility model in detail:
(1) engine off, braking during standstill is used, see Fig. 1, this moment engine stoping operation, cut off the dumping car Vehicle Power, at this moment only have energy storage 12 to have certain pressure oil liquid, solenoid directional control valve 18 makes Parking Brake 11 internal pressure oil be discharged into hydraulic reservoir, the spring force of Parking Brake 11 is with rear lock, and dumping car is in the braking during standstill application state.
(2) engine running, braking during standstill is removed, and sees Fig. 2, engine drive brake pump 2 runnings this moment, energy storage 12 is full of pressure oil, and this moment, directional control valve 7 commutated under the effect of transmission gearbox engine oil pressure, and the LP mouth of directional control valve 7 and LA mouth are communicated with; Chaufeur unclamps " urgent/Parking " stop button, solenoid directional control valve 18 gets electric rear commutation, pressure oil is through entering the P2 mouth of braking valve for vehicle 5 from the B mouth output of braking multiway valve 4 behind the solenoid directional control valve 18, enter Parking Brake 11 through reducing valve 21 decompression is laggard again, Parking Brake 11 unclamped trailing wheel after hydraulic coupling overcame spring force, vehicle can travel, and dumping car is in the braking during standstill disarm state.
(3) engine running, service brake is implemented, see Fig. 3, step on the pedal of brake pedal valve 6, pressure oil is respectively through the B1 of brake pedal valve 6, the output of B2 mouth, the fluid of B1 mouth enters front-wheel brake 9 through loading brake activation valve 8, the fluid of B2 mouth enters the RB mouth of braking valve for vehicle 5, enter rear wheel brake 10 through behind the shuttle valve 25 again, simultaneously because filter screen 22, cutoff port 23, back pressure valve 24, the effect of shuttle valve 25 makes rear wheel brake 10 remain with certain low pressure fluid, can reduce braking time, make braking rapidly reliable, thus when the driving braking mode front-wheel brake 9, rear wheel brake 10 plays brake action simultaneously.
(4) engine running, emergency braking, see Fig. 4, during engine running, press " urgent/Parking " stop button, solenoid directional control valve 18 dead electricity, pressure oil is through being exported by the A mouth of braking multiway valve 4 behind the solenoid directional control valve 18, pressure oil enters the pilot control opening Px of brake pedal valve 6 through directional control valve 7 again, promotes 6 work of brake pedal valve, and namely pressure oil enters front-wheel brake 9 through brake pedal valve 6 and rear wheel brake 10 makes its braking; Fluid hold-off pressure in the while Parking Brake 11, Parking Brake 11 locking trailing wheels are so the front-wheel brake 9 of dumping car, rear wheel brake 10, parking brake 11 play brake action simultaneously when emergency braking condition.
(5) engine running, load braking, see Fig. 4, when charging or discharging, press " loading " stop button, solenoid directional control valve 18 dead electricity, loading brake activation valve 8 gets electric, the Px mouth that pressure oil enters brake pedal valve 6 promotes 6 work of brake pedal valve, the B1 mouth delivery pressure of brake pedal valve 6 is loaded brake activation valve 8 and cuts off, the pressure oil of B2 mouth output enters rear wheel brake 10, and the pressure oil in the Parking Brake 11 discharges through solenoid directional control valve 18, i.e. Parking Brake 11 locking trailing wheels, so front-wheel brake 9 unclamps when loading braking mode, 11 pairs of rear wheel brake 10 and Parking Brakes play brake action simultaneously.
(6) engine running, autobrake, when vehicle in when operation, when dropping to the first setting value owing to the pressure in the reason energy storages such as the system failure 12, rear brake accumulator pressure switch 14 or front brake accumulator pressure switch 15 will be sent a signal makes the interior low brake-pressure alarm lamp of operator's compartment bright, the warning driver is flame-out stops, when if vehicle does not have the pressure in flame-out and the energy storage 12 to drop to the second setting value, rear brake accumulator pressure switch 14 or front brake accumulator pressure switch 15 will again be sent a signal and make solenoid directional control valve 18 dead electricity, allow vehicle compulsory stop.
Claims (7)
1. heavy mining truck brake equipment, described device comprises: fuel tank (1), brake pump (2), braking multiway valve (4), pedal brake valve (6), front brake (9), it is characterized in that: the oil suction of brake pump (2) is connected with fuel tank (1), and oil outlet is connected with braking multiway valve (4) through filter (2); Described braking multiway valve (4) is connected with braking valve for vehicle (5), brake pedal valve (6) respectively, described brake pedal valve (6) is connected 5 with front brake (9) with braking valve for vehicle respectively) be connected, described braking valve for vehicle (5) is connected 11 with rear brake (10) with Parking Brake respectively) be connected.
2. heavy mining truck brake equipment according to claim 1, it is characterized in that: described braking multiway valve (4) is provided with P, PY, ACC1, ACC2, PS1, PS2, PS3, A, B, P1, the T mouth, braking multiway valve (4) inside is provided with solenoid directional control valve (18), rear brake accumulator check valve (19), front brake energy storage device check valve (20), rear brake accumulator check valve (19) outlet is connected with the import of solenoid directional control valve (18), the return opening of solenoid directional control valve (18) is connected with the T mouth of braking multiway valve (4), the outlet of solenoid directional control valve (18) with respectively with the A that brakes multiway valve (4), the B mouth connects; The oil inlet of rear brake accumulator check valve (19), front brake energy storage device check valve (20) with respectively with the braking multiway valve (4) the P mouth be connected.
3. heavy mining truck brake equipment according to claim 1, it is characterized in that: described braking valve for vehicle (5) is provided with RB, RB1, RT, P2, RB2, TEST mouth, braking valve for vehicle inside comprises reducing valve (21), cutoff port (23), back pressure valve (24) and shuttle valve (25), the import of reducing valve (21) is connected with P2 mouth on the braking valve for vehicle (5), and the outlet of reducing valve (21) is connected through the import of filter screen (22) with cutoff port (23); Cutoff port (23) outlet difference (5) reaches with back pressure valve (24) import, the first import of shuttle valve (25) is connected, the outlet of back pressure valve (24) is connected with RT mouth on the braking valve for vehicle (), the second import of shuttle valve (25) is connected with the upper RB mouth of braking valve for vehicle (5), the outlet of shuttle valve (25) is connected with the upper RB1 mouth of braking valve for vehicle (5), and the TEST mouth on the braking valve for vehicle (5) is connected with the RB1 mouth.
4. heavy mining truck brake equipment according to claim 1 is characterized in that: also be provided with between described pedal brake valve (6) and the front brake 9 and load brake activation valve (8).
5. heavy mining truck brake equipment according to claim 1 and 2 is characterized in that: also be provided with directional control valve (7) between the Px mouth of the PY on the described braking multiway valve (4) and pedal brake valve (6).
6. heavy mining truck brake equipment according to claim 5, it is characterized in that: ACC1, the ACC2 mouth of braking multiway valve (4) are connected 12 with energy storage respectively) connect, PS1, PS2, the PS3 mouth of braking multiway valve (4) are separately installed with braking during standstill pressure switch (13), rear brake accumulator pressure switch (14), front brake accumulator pressure switch (15).
7. heavy mining truck brake equipment according to claim 1, it is characterized in that: the PS4 of described pedal brake valve (6), PS5 mouth are separately installed with rear brake-pressure switch (16) and front brake-pressure switch (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273469 CN202743227U (en) | 2012-06-01 | 2012-06-01 | Braking device of heavy-duty self-dumping truck for mines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273469 CN202743227U (en) | 2012-06-01 | 2012-06-01 | Braking device of heavy-duty self-dumping truck for mines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202743227U true CN202743227U (en) | 2013-02-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220273469 Expired - Lifetime CN202743227U (en) | 2012-06-01 | 2012-06-01 | Braking device of heavy-duty self-dumping truck for mines |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202743227U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717788A (en) * | 2012-06-01 | 2012-10-10 | 内蒙古北方重型汽车股份有限公司 | Braking device of heavy-duty mining dump truck |
| CN111196584A (en) * | 2018-08-26 | 2020-05-26 | 张玲花 | Fork truck and fork control device thereof |
-
2012
- 2012-06-01 CN CN 201220273469 patent/CN202743227U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717788A (en) * | 2012-06-01 | 2012-10-10 | 内蒙古北方重型汽车股份有限公司 | Braking device of heavy-duty mining dump truck |
| CN111196584A (en) * | 2018-08-26 | 2020-05-26 | 张玲花 | Fork truck and fork control device thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130220 |
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| CX01 | Expiry of patent term |