Brake system of slag ladle vehicle

Abstract

The utility model relates to the technical field of brake systems, and provides a slag ladle vehicle brake system which comprises a front brake mechanism, a rear brake mechanism and an inflator pump for supplying air to the front brake mechanism and the rear brake mechanism, the front brake mechanism comprises a front air cylinder, a front brake relay valve, a hand brake relay valve and a front brake mechanism, and the rear brake mechanism comprises a rear air cylinder, a rear brake relay valve and a rear brake mechanism. The rear brake mechanism comprises a rear air cylinder, a rear brake relay valve and a rear brake mechanism, the front air cylinder is communicated with a brake main valve used for changing the front brake relay valve and the rear brake relay valve to control on-off of air, and the hand brake relay valve is communicated with a hand brake valve used for changing the hand brake relay valve to control on-off of air. The front air cylinder is communicated with the air inlet end of the front brake relay valve and the air inlet end of the hand brake relay valve, the air outlet end of the front brake relay valve and the air outlet end of the hand brake relay valve are both communicated with the front brake mechanism, the air inlet end of the rear brake relay valve is communicated with the rear air cylinder, and the air outlet end of the rear brake relay valve is communicated with the rear brake mechanism. And the maintenance cost is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a brake system technical field, specifically, relates to a ladle car brake system. BACKGROUND

[0002] At present, the brake system of the ladle car generally adopts oil brake, although this design guarantees the effectiveness of the brake to a certain extent, but with the increase of the service life of the vehicle, the brake system faces the problems of aging and deterioration. Especially in the long-term use process, the brake system often appears the phenomenon of unstable pressure, which not only affects the response speed and effect of the brake, but also may cause brake failure, and brings serious threat to the safety of equipment and personnel. In addition, the frequent oil leakage and oil seepage of the brake system further aggravate this problem. The dripping of oil not only causes economic loss of enterprises, but also may pollute the surrounding environment, and increases the environmental protection burden of enterprises.

[0003] In the aspect of maintenance, the prices of imported spare parts such as brake master pump, brake sub-pump repair kit and brake adjusting arm are generally high, and the procurement cycle is long, which makes the daily maintenance and repair of the vehicle on site more difficult. Due to the difficulty of timely arrival of spare parts, the normal operation of the vehicle is affected, and the production cost and safety hazard are increased. SUMMARY

[0004] The utility model aims at providing a ladle car brake system, solves the problems of insufficient heavy load condition and high maintenance cost after the aging of the existing ladle car brake system.

[0005] The utility model discloses a ladle car brake system, including front brake brake mechanism, rear brake brake mechanism and the inflation pump for front brake brake mechanism and rear brake brake mechanism supply gas, front brake brake mechanism includes front air reservoir, front brake relay valve, hand brake relay valve and front brake mechanism, rear brake brake mechanism includes rear air reservoir, rear brake relay valve and rear brake mechanism, front air reservoir is connected with the brake master valve for changing front brake relay valve and rear brake relay valve control gas on-off, hand brake relay valve is connected with the hand brake valve for changing hand brake relay valve control gas on-off, the gas inlet end of front brake relay valve and hand brake relay valve is communicated with front air reservoir respectively, the gas outlet end of front brake relay valve and hand brake relay valve all are communicated with front brake mechanism, the gas inlet end of rear brake relay valve is communicated with rear air reservoir, the gas outlet end of rear brake relay valve is communicated with rear brake mechanism.

[0006] Further, the first shuttle valve is arranged between the front air reservoir and the front brake relay valve, the second shuttle valve is arranged between the front air reservoir and the rear brake relay valve, the brake master valve comprises a front brake valve and a rear brake valve, the gas outlet end of the front brake valve is communicated with one side gas inlet end of the first shuttle valve and the second shuttle valve respectively, and the gas outlet end of the rear brake valve is communicated with the other side gas inlet end of the first shuttle valve and the second shuttle valve respectively.

[0007] Further, the air pump is communicated with a four-way protection valve, and the front air cylinder and the rear air cylinder are each divided into two chambers, and the air inlet ends of the two chambers of the front air cylinder and the rear air cylinder are communicated with the air outlet end of the four-way protection valve respectively.

[0008] Preferably, a one-way valve is connected between the four-way protection valve and the front air cylinder and between the four-way protection valve and the rear air cylinder.

[0009] Preferably, a dryer is arranged between the four-way protection valve and the air pump.

[0010] Further, the front brake mechanism is a drum brake, and the rear brake mechanism is a brake caliper.

[0011] Preferably, a brake booster is connected in front of the front brake mechanism, and a brake force pump is connected in front of the rear brake mechanism.

[0012] Further, the hand brake valve is a two-position three-way button valve, and the hand brake valve is communicated with an air source in front.

[0013] The utility model has at least the following advantages and beneficial effects: air is compressed into high-pressure gas by the air pump, and is stored in the front air cylinder and the rear air cylinder respectively, the front brake relay valve and the hand brake relay valve are provided with power gas by the front air cylinder, the front brake relay valve and the rear brake relay valve are provided with control gas, the hand brake relay valve is controlled by the hand brake valve, and the power gas of the rear brake relay valve is provided by the rear air cylinder, the oil brake system of the existing ladle car is changed into a gas brake system, the deficiency of the original oil brake system under heavy load conditions is effectively solved, the maintenance cost is reduced, and the stability of the brake is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The utility model provides a kind of principle diagram of ladle car brake system.

[0015] Fig. 1- air pump, 2- dryer, 3- four-way protection valve, 4- front brake mechanism, 41- front air cylinder, 42- front brake relay valve, 43- hand brake relay valve, 44- brake booster, 45- front brake mechanism, 46- hand brake valve, 5- rear brake mechanism, 51- rear air cylinder, 52- rear brake relay valve, 53- brake force pump, 54- rear brake mechanism, 6- brake master valve, 61- front brake valve, 62- rear brake valve, 71- first shuttle valve, 72- second shuttle valve, 8- one-way valve, 9- air source. DETAILED DESCRIPTION

[0016] The specific embodiments are described below in conjunction with the accompanying drawings.

[0017] EMBODIMENT

[0018] As Figure 1As shown, in the embodiment, a ladle car brake system is mainly disclosed, comprising a front brake mechanism 4, a rear brake mechanism 5 and an air pump 1 for supplying air to the front brake mechanism 4 and the rear brake mechanism 5, wherein the front brake mechanism 4 comprises a front air cylinder 41, a front brake relay valve 42, a hand brake relay valve 43 and a front brake mechanism 45, and the rear brake mechanism 5 comprises a rear air cylinder 51, a rear brake relay valve 52 and a rear brake mechanism 54.

[0019] The front air cylinder 41 is communicated with a brake master valve 6 for changing the control air on-off of the front brake relay valve 42 and the rear brake relay valve 52, the hand brake relay valve 43 is communicated with a hand brake valve 46 for changing the control air on-off of the hand brake relay valve 43, the front air cylinder 41 is communicated with the air inlet ends of the front brake relay valve 42 and the hand brake relay valve 43 respectively, the air outlet ends of the front brake relay valve 42 and the hand brake relay valve 43 are both communicated with the front brake mechanism 45, the air inlet end of the rear brake relay valve 52 is communicated with the rear air cylinder 51, and the air outlet end of the rear brake relay valve 52 is communicated with the rear brake mechanism 54. Specifically, the oil brake system of the existing ladle car is changed into an air brake system, the air pump 1 is driven by the engine to compress air into high-pressure gas and store the high-pressure gas in the front air cylinder 41 and the rear air cylinder 51 respectively, the air outlet end of the front air cylinder 41 is mainly divided into three circuits, the first circuit provides power air for the front brake relay valve 42, the second circuit provides power air for the hand brake relay valve 43, and the third circuit provides control air for the front brake relay valve 42 and the rear brake relay valve 52, when connected, the pistons of the front brake relay valve 42 and the rear brake relay valve 52 are pushed to move, so that the power air is guided to pass through, enters the air cavities of the rear end front brake mechanism 45 and the rear brake mechanism 54, and brake braking is realized; the conduction of the hand brake relay valve 43 is controlled by the hand brake valve 46; and the power air of the rear brake relay valve 52 is provided by the rear air cylinder 51. The deficiencies of the original oil brake system under heavy load conditions are effectively solved, the maintenance cost is reduced, and the stability of the brake is improved.

[0020] Further, in specific implementation, the first shuttle valve 71 is arranged between the above-mentioned front air cylinder 41 and the front brake relay valve 42, the second shuttle valve 72 is arranged between the front air cylinder 41 and the rear brake relay valve 52, the brake master valve 6 comprises a front brake valve 61 and a rear brake valve 62, the air outlet end of the front brake valve 61 is respectively communicated with one side air inlet end of the first shuttle valve 71 and the second shuttle valve 72, and the air outlet end of the rear brake valve 62 is respectively communicated with the other side air inlet end of the first shuttle valve 71 and the second shuttle valve 72. The first and second shuttle valves 72 provide independent air source 9 passages for the brake system, improve flexibility and safety. The air source 9 can be managed as required. When a problem occurs in a certain air source 9 passage, the fault can be effectively isolated by the shuttle valve, without affecting the function of the overall brake system.

[0021] Further, in the specific implementation, the four-way protection valve 3 is connected to the above-mentioned air pump 1, the front air cylinder 41 and the rear air cylinder 51 are each divided into two chambers, and the air inlet ends of the two chambers of the front air cylinder 41 and the rear air cylinder 51 are respectively connected to the air outlet end of the four-way protection valve 3. Specifically, the two chambers in the front air cylinder 41 and the two chambers in the rear air cylinder 51 are in a master-slave relationship, the air outlet ends of the two chambers are connected in parallel for common output, thereby ensuring the safety of the system and the normal operation of the brake function. In addition, the four loops of the four-way protection valve 3 are respectively connected to different chambers, which can flexibly allocate the air source 9 of each air cylinder, thereby increasing the overall controllability of the system.

[0022] Preferably, a one-way valve 8 is connected between the four-way protection valve 3 and the front air cylinder 41 and between the four-way protection valve 3 and the rear air cylinder 51. The backflow of compressed air in the front air cylinder 41 and the rear air cylinder 51 is effectively prevented, the one-way flow of the gas is ensured, and the system is more safe and reliable.

[0023] Preferably, a dryer 2 is arranged between the four-way protection valve 3 and the air pump 1. The moisture in the compressed air can be removed, the corrosion and icing of the pneumatic system caused by the moisture are prevented, the service life of the equipment is prolonged, and the stability of the system is improved.

[0024] Further, in the specific implementation, the above-mentioned front brake mechanism 45 is a drum brake, and the rear brake mechanism 54 is a brake caliper. The front wheel adopts full pneumatic braking, and the rear wheel adopts air push oil braking. Preferably, the brake booster 44 is connected in front of the front brake mechanism 45, the adjusting arm matched with the brake booster 44 is used to replace the adjusting arm of the existing oil brake system, and the brake booster pump 53 is connected in front of the rear brake mechanism 54, and the brake booster pump 53 amplifies the air pressure to drive the brake caliper piston.

[0025] Further, in the specific implementation, the above-mentioned hand brake valve 46 is a two-position three-way button valve, and the hand brake valve 46 is connected in front of the air source 9. The hand brake valve 46 uses an independent air source 9, which ensures that the hand brake can quickly establish air pressure when needed, improves the response speed of the hand brake, effectively prevents the risk of brake failure, and thereby enhances the safety of parking and emergency stopping.

Claims

1. A ladle car brake system, characterized by, The front brake mechanism (4), the rear brake mechanism (5) and the air pump (1) for supplying air to the front brake mechanism (4) and the rear brake mechanism (5); The front brake mechanism (4) comprises a front air cylinder (41), a front brake relay valve (42), a hand brake relay valve (43) and a front brake mechanism (45), and the rear brake mechanism (5) comprises a rear air cylinder (51), a rear brake relay valve (52) and a rear brake mechanism (54); The front air cylinder (41) is communicated with a brake master valve (6) for changing the control air on-off of the front brake relay valve (42) and the rear brake relay valve (52), the hand brake relay valve (43) is communicated with a hand brake valve (46) for changing the control air on-off of the hand brake relay valve (43), the air inlet ends of the front brake relay valve (42) and the hand brake relay valve (43) are respectively communicated with the front air cylinder (41), the air outlet ends of the front brake relay valve (42) and the hand brake relay valve (43) are both communicated with the front brake mechanism (45), the air inlet end of the rear brake relay valve (52) is communicated with the rear air cylinder (51), and the air outlet end of the rear brake relay valve (52) is communicated with the rear brake mechanism (54).

2. The ladle car brake system of claim 1, wherein, The first shuttle valve (71) is arranged between the front air cylinder (41) and the front brake relay valve (42), the second shuttle valve (72) is arranged between the front air cylinder (41) and the rear brake relay valve (52), the brake master valve (6) comprises a front brake valve (61) and a rear brake valve (62), the air outlet end of the front brake valve (61) is respectively communicated with one side air inlet end of the first shuttle valve (71) and the second shuttle valve (72), and the air outlet end of the rear brake valve (62) is respectively communicated with the other side air inlet end of the first shuttle valve (71) and the second shuttle valve (72).

3. The ladle car brake system of claim 1, wherein, The air pump (1) is communicated with a four-way protection valve (3), the front air cylinder (41) and the rear air cylinder (51) are each divided into two chambers, and the air inlet ends of the two chambers of the front air cylinder (41) and the rear air cylinder (51) are respectively communicated with the air outlet end of the four-way protection valve (3).

4. The ladle car brake system of claim 3, wherein, The one-way valve (8) is connected between the four-way protection valve (3) and the front air cylinder (41) and between the four-way protection valve (3) and the rear air cylinder (51).

5. The ladle car brake system of claim 3, wherein, The dryer (2) is arranged between the four-way protection valve (3) and the air pump (1).

6. The ladle car brake system of claim 1, wherein, The front brake mechanism (45) is a drum brake, and the rear brake mechanism (54) is a brake caliper.

7. The ladle car brake system of claim 6, wherein, The brake booster (44) is arranged in front of the front brake mechanism (45), and the brake booster pump (53) is arranged in front of the rear brake mechanism (54).

8. The ladle car brake system of claim 1, wherein, The hand brake valve (46) is a two-position three-way button valve, and the air source (9) is communicated with the front of the hand brake valve (46).

Images