Brake auxiliary device for mining trackless rubber-tyred vehicle

Abstract

The invention relates to the technical field of braking, in particular to a mining trackless rubber-tyred vehicle brake auxiliary device which comprises an outer box body, and a plurality of brake mechanisms matched with auxiliary brake discs are fixed to the side, close to the auxiliary brake discs, of the outer box body. The brake mechanism comprises an electromagnet embedded in the side wall of the outer box body and a supporting rod fixed to the side wall of the outer box body, a sliding sleeve is installed on the supporting rod in a sliding mode, a connecting arm is fixed to the end, away from the outer box body, of the sliding sleeve, and a brake disc is detachably installed on the connecting arm in a connected mode. The device has the beneficial effects that when a vehicle is braked, the electromagnets drive the magnetic suction plates to move towards the electromagnets to drive the brake discs to be close to the auxiliary brake disc, friction force is increased through the multiple brake discs, and the braking effect is improved; during braking, the brake disc cooling module can spray water to the auxiliary brake disc for cooling, the normal working performance of the brake disc is guaranteed, the service life of the brake disc is prolonged, and meanwhile stable operation of an auxiliary brake system can be maintained.

Description

Technical Field

[0001] The invention relates to the technical field of brakes, and in particular to a brake auxiliary device for a trackless rubber-tyred mining vehicle. Background Art

[0002] When mining rubber-tyred trackless vehicles are working underground, they have extremely high requirements for braking performance due to the complex working environment and changeable road conditions, such as steep slopes, slippery roads, and dust. Traditional brake systems may not be able to meet the needs of fast and stable braking in some extreme cases, which can easily lead to safety accidents. For example, continuous braking when going downhill with a heavy load may cause the brake disc to overheat and reduce the braking effect. Therefore, it is necessary to design a brake assist device to improve the braking safety and reliability of mining rubber-tyred trackless vehicles. Summary of the invention

[0003] The present invention proposes a brake auxiliary device for a trackless rubber-tyred vehicle for mining in order to solve the above problems.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A brake auxiliary device for a trackless rubber-tyred vehicle for mining, comprising a fixing frame and a wheel axle fixed below a vehicle chassis, an auxiliary brake disc being fixed on the wheel axle, an outer box being fixed on one side of the fixing frame, the outer box being fixed on the wheel axle through a bearing, a plurality of brake mechanisms being fixed on one side of the outer box close to the auxiliary brake disc and being mounted in cooperation with the auxiliary brake disc, the brake mechanism comprising an electromagnet embedded in a side wall of the outer box and a support rod fixed on the side wall of the outer box, a sliding sleeve being slidably mounted on the support rod, a connecting arm being fixed on one end of the sliding sleeve away from the outer box, a brake disc being mounted on the connecting arm through a detachable connection, a magnetic plate being fixed on one end of the sliding sleeve close to the outer box, the magnetic plate corresponding to the position of the electromagnet, a reset spring being nested on the outside of the support rod, the reset spring being located between the magnetic plate and the outer box, a through hole being formed on the magnetic plate, a limiting bolt being inserted in the through hole of the magnetic plate, and an end of the limiting bolt being mounted on the outer box through a thread.

[0006] Furthermore, at least one reinforcing rib is fixed between the magnetic attraction plate and the sliding sleeve.

[0007] Furthermore, the brake disc includes a fixed steel plate and a friction body, a plurality of connectors are formed on a side of the fixed steel plate facing the auxiliary brake disc, the plurality of connectors are distributed in a network, and the friction body is fixed to the fixed steel plate by a press.

[0008] Furthermore, a brake disc cooling module for cooling the auxiliary brake disc is fixed in the outer box.

[0009] Furthermore, the brake disc cooling module includes a water tank and a diverter box, a water pump is fixed in the outer box body, the water inlet end of the water pump is connected to the water tank, a water injection hole connected to the inner cavity of the water tank is formed on the side wall of the outer box body, a one-way valve is fixed in the water injection hole, the water outlet end of the water pump is connected to the diverter box, a water outlet channel connected to the diverter box and the inner cavity of the sliding sleeve is formed in the center of the support rod, a drip hole is formed on the outer wall of the sliding sleeve at a position corresponding to the auxiliary brake disc, a water injection nozzle is formed on the end of the support rod inserted into the sliding sleeve, a drain valve for blocking the water outlet channel is fixed on the end of the water injection nozzle, and the drain valve is a pressure valve.

[0010] Furthermore, a groove is formed on the outside of one end of the support rod close to the water outlet, and a sealing ring is embedded in the groove.

[0011] The present invention also discloses a brake auxiliary system for a trackless rubber-tyred mining vehicle, comprising a data acquisition module, a control module, an auxiliary brake module, a brake disc cooling module, and an alarm module.

[0012] The data acquisition module includes a wheel speed sensor installed on the wheel, a temperature sensor installed near the brake disc, an acceleration sensor installed on the vehicle chassis, and a brake pedal travel sensor installed in the cab, and the vehicle status is collected through various sensors;

[0013] The control module determines whether the vehicle is in a braking state by analyzing the data from the data acquisition module, and sends instructions to the auxiliary braking module, the brake disc cooling module, and the alarm module;

[0014] The auxiliary brake module uses the suction force generated by the electromagnet to force the brake disc to approach the auxiliary brake disc for auxiliary braking;

[0015] The brake disc cooling module sprays water onto the auxiliary brake disc through a water pump to cool the auxiliary brake disc when the auxiliary brake module is started;

[0016] The alarm module is installed in the cab and is used to send sound and light alarm information to the driver when the auxiliary brake module is activated, so as to remind the driver to pay attention to the vehicle status.

[0017] By adopting the above technical scheme, the beneficial effects of the present invention are as follows: when the vehicle brakes, the electromagnet drives the magnetic suction plate to move toward the electromagnet to drive the brake disc close to the auxiliary brake disc, and the friction force is increased by multiple brake discs to improve the braking effect; when braking, the brake disc cooling module can spray water on the auxiliary brake disc to cool it down, thereby ensuring the normal working performance of the brake disc, extending the service life of the brake disc, and also helping to maintain the stable operation of the auxiliary brake system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0019] Figure 1 is a stereogram of the present invention;

[0020] Figure 2 It is a front view of the present invention;

[0021] Figure 3 is a cross-sectional view of the present invention;

[0022] Figure 4 is a cross-sectional view of a brake disc of the present invention;

[0023] Figure 5 It is a block diagram of the brake assist system of the present invention.

[0024] The following are the descriptions of the reference numerals:

[0025] 1. Wheel axle; 2. Fixed frame; 3. Outer box; 4. Auxiliary brake disc; 5. Braking mechanism; 51. Electromagnet; 52. Support rod; 53. Sliding sleeve; 54. Reset spring; 55. Magnetic plate; 56. Connecting arm; 57. Brake disc; 571. Fixed steel plate; 572. Friction body; 58. Reinforcement rib; 59. Limit bolt; 6. Brake disc cooling module; 61. Water pump; 62. Water storage tank; 63. Diverter box; 64. Water outlet channel; 65. Drain valve; 66. Drip hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] like Figure 1-Figure 4As shown, a brake auxiliary device for a trackless rubber-tyred vehicle for mining comprises a fixing frame 2 and a wheel axle 1 fixed below a vehicle chassis, an auxiliary brake disc 4 is fixed on the wheel axle 1, an outer box body 3 is fixed on one side of the fixing frame 2, the outer box body 3 is fixed on the wheel axle 1 through a bearing, a plurality of brake mechanisms 5 installed in cooperation with the auxiliary brake disc 4 are fixed on one side of the outer box body 3 close to the auxiliary brake disc 4, the brake mechanism 5 comprises an electromagnet 51 embedded on a side wall of the outer box body 3 and a support rod 52 fixed on the side wall of the outer box body 3, a sliding sleeve 53 is slidably installed on the support rod 52, a connecting arm 56 is fixed on the end of the sliding sleeve 53 away from the outer box body 3, a brake disc 57 is installed on the connecting arm 56 through a detachable connection, and a A magnetic plate 55, a reinforcing rib 58 is fixed between the magnetic plate 55 and the sliding sleeve 53, the magnetic plate 55 corresponds to the electromagnet 51, a reset spring 54 is nested on the outside of the support rod 52, the reset spring 54 is located between the magnetic plate 55 and the outer box body 3, a through hole is formed on the magnetic plate 55, a limiting bolt 59 is inserted in the through hole of the magnetic plate 55, and the end of the limiting bolt 59 is installed on the outer box body 3 through a thread. When auxiliary braking is not performed, the brake disc 57 is away from the auxiliary brake disc 4 under the action of the reset spring 54. When auxiliary braking is required, the electromagnet 51 is energized to generate suction to drive the magnetic plate 55 to move toward the electromagnet 51 and then drive the brake disc 57 to move toward the auxiliary brake disc 4 and contact it, and auxiliary braking is performed through the friction between the two.

[0028] In this embodiment, the brake disc 57 includes a fixed steel plate 571 and a friction body 572. The fixed steel plate 571 is formed with a plurality of connectors on the side facing the auxiliary brake disc 4. The plurality of connectors are distributed in a network. The friction body 572 is fixed to the fixed steel plate 571 by a press. The friction material is integrally formed on the fixed steel plate 571 through high temperature and high pressure extrusion. This is simple and convenient, has high hardness and a long service life.

[0029] In this embodiment, a brake disc cooling module 6 for cooling the auxiliary brake disc 4 is fixed in the outer box body 3, and the brake disc cooling module 6 includes a water tank 62 and a diverter box 63. A water pump 61 is fixed in the outer box body 3, and the water inlet end of the water pump 61 is connected to the water tank 62. A water injection hole connected to the inner cavity of the water tank 62 is formed on the side wall of the outer box body 3, and a one-way valve is fixed in the water injection hole to prevent the water in the water tank 62 from flowing out. When the water pump 61 pumps water from the water tank 62, external air can also enter the water tank 62 through the one-way valve to balance the air pressure and avoid too low pressure in the water tank 62. The water outlet end of the water pump 61 is connected to the diverter box The support rod 52 is provided with a water outlet channel 64 in the center thereof, which is connected to the diverter box 63 and the inner cavity of the sliding sleeve 53. A drip hole 66 is provided on the outer wall of the sliding sleeve 53 at a position corresponding to the auxiliary brake disc 4. A water injection nozzle is provided at one end of the support rod 52 inserted into the sliding sleeve 53. A drain valve 65 for blocking the water outlet channel 64 is fixed at the end of the water injection nozzle. The drain valve 65 is a pressure valve. When the electromagnet 51 is energized, the water pump 61 can be synchronously controlled to start. The water pump 61 pumps the water in the water tank 62 into the diverter box 63. Then the water flows into the sliding sleeve 53 through the water outlet channel 64 and is discharged from the drip hole 66 to be sprayed onto the auxiliary brake disc to cool it down.

[0030] In this embodiment, a groove is formed on the outside of one end of the support rod 52 close to the water outlet, and a sealing ring is embedded in the groove to improve the sealing performance and prevent water leakage.

[0031] like Figure 5 As shown, a brake auxiliary system for a trackless rubber-tyred vehicle for mining includes a data acquisition module, a control module, an auxiliary brake module, a brake disc cooling module, and an alarm module.

[0032] The data acquisition module includes a wheel speed sensor installed on the wheel, a temperature sensor installed near the brake disc, an acceleration sensor installed on the vehicle chassis, and a brake pedal travel sensor installed in the cab, and the vehicle status is collected through various sensors;

[0033] The control module analyzes the data from the data acquisition module, performs data processing and analysis to determine whether the vehicle is in a braking state, and sends instructions to the auxiliary brake module, the brake disc cooling module, and the alarm module; for example, when the wheel speed sensor detects that the wheel speed is abnormally reduced (close to locking) and the brake pedal travel sensor shows that the driver is braking hard, the control module determines that the vehicle is in emergency braking and the wheel may be locked. Based on the judgment result, a control instruction is sent to the auxiliary brake module and the brake disc cooling module to control the start, stop, and working intensity of the auxiliary brake module and the brake disc cooling module.

[0034] The auxiliary brake module uses the suction force generated by the electromagnet to force the brake disc to approach the auxiliary brake disc for auxiliary braking;

[0035] The brake disc cooling module sprays water onto the auxiliary brake disc through a water pump to cool the auxiliary brake disc when the auxiliary brake module is started;

[0036] The alarm module is installed in the cab and is used to send sound and light alarm information to the driver when the auxiliary brake module is activated to remind the driver to pay attention to the vehicle status. At the same time, the alarm module also includes a wireless signal transmitter that can send alarm information to the mine monitoring system so that corresponding measures can be taken in time.

[0037] The working principle of the present invention is as follows: when the vehicle brakes, the data acquisition module collects the vehicle braking information, and analyzes the data uploaded by the wheel speed sensor, temperature sensor, acceleration sensor, and brake pedal travel sensor according to the preset algorithm and logic to determine the vehicle's driving state and braking requirements. When auxiliary braking is required, the control module can control the auxiliary braking module and the brake disc cooling module to start auxiliary braking and cooling until the vehicle speed drops to zero, at which time the auxiliary braking module and the brake disc cooling module are turned off.

[0038] Monitoring principle under normal driving conditions:

[0039] The wheel speed sensor, temperature sensor, acceleration sensor and brake pedal travel sensor in the data acquisition module are in working condition when the vehicle is driving normally. The wheel speed sensor monitors the rotation speed of the wheel in real time and transmits the wheel rotation speed signal to the control module uninterruptedly. The temperature sensor always pays attention to the temperature of the brake disc, and its signal is also fed back to the control module. The acceleration sensor detects the acceleration of the vehicle during driving, such as whether the vehicle has an abnormal acceleration or deceleration trend. The brake pedal travel sensor senses the position of the brake pedal, and even if there is no braking action, it can transmit information such as the initial position of the pedal to the control module. After receiving this data, the control module only performs routine recording and analysis, and the actuator of the auxiliary brake device is in standby state.

[0040] Working principle during normal braking:

[0041] When the driver lightly presses the brake pedal for normal braking, the brake pedal travel sensor will send the brake pedal travel and force signals to the control module. The control module makes a judgment based on the wheel speed data transmitted by the wheel speed sensor. If it is judged that the vehicle's braking condition is within the normal working range of the main brake system, that is, the wheel speed decreases according to the normal deceleration law, the vehicle has no abnormal acceleration changes, and the brake disc temperature is also within the normal range, then the control module will not start the brake mechanism of the auxiliary brake device, and the main brake system will complete the braking operation independently.

[0042] How it works in emergency braking situations:

[0043] If the vehicle is in an emergency braking state, for example, the driver presses the brake pedal hard, the brake pedal travel sensor will send this strong braking intention signal (such as long pedal travel and strong pedal force) to the control module. At the same time, the wheel speed sensor detects a sharp drop in wheel speed. When the wheel speed approaches the locking threshold, these two signals are received by the control module at the same time.

[0044] The control module will immediately start the auxiliary brake module. After receiving the command from the control module, the solenoid valve starts to energize and work, thereby driving the brake disc close to the auxiliary brake disc through the magnetic suction plate to apply additional braking force to the wheel, thereby enhancing the overall braking effect of the vehicle. The braking force of the auxiliary brake module can be dynamically adjusted according to the algorithm of the control module, combined with factors such as brake pedal travel and wheel speed, to ensure that the vehicle can stop safely in the shortest distance.

[0045] How the brake disc works in the event of overheating:

[0046] When the temperature sensor detects that the brake disc temperature is too high and exceeds the preset safety temperature threshold, it will send a temperature signal to the control module. After receiving the signal, the control module starts the brake disc cooling module.

[0047] The water pump starts working, and delivers the water in the water tank to multiple drip holes through the diverter box. The drip holes spray water to the auxiliary brake disc, taking away the heat of the auxiliary brake disc, thereby reducing the temperature of the auxiliary brake disc. The water flow size can be adjusted by the control module according to factors such as the actual temperature and position of the auxiliary brake disc.

[0048] The circuit connection involved in the present invention is a common method used by those skilled in the art, and technical inspiration can be obtained through a limited number of experiments, and it belongs to the widely used existing technology.

[0049] Components not described in detail herein are prior art.

[0050] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A brake auxiliary device for a trackless rubber-tyred vehicle for mining, comprising a fixing frame (2) fixed below a vehicle chassis and a wheel axle (1), an auxiliary brake disc (4) being fixed on the wheel axle (1), an outer box body (3) being fixed on one side of the fixing frame (2), and the outer box body (3) being fixed on the wheel axle (1) via a bearing, characterized in that: A plurality of brake mechanisms (5) are fixed on one side of the outer box (3) close to the auxiliary brake disc (4), and are mounted in cooperation with the auxiliary brake disc (4). The brake mechanism (5) comprises an electromagnet (51) embedded on the side wall of the outer box (3) and a support rod (52) fixed on the side wall of the outer box (3). A sliding sleeve (53) is slidably mounted on the support rod (52). A connecting arm (56) is fixed on one end of the sliding sleeve (53) away from the outer box (3). The brake disc is mounted on the connecting arm (56) through a detachable connection. (57), a magnetic plate (55) is fixed to one end of the sliding sleeve (53) close to the outer box body (3), the magnetic plate (55) corresponds to the position of the electromagnet (51), a return spring (54) is nested outside the support rod (52), the return spring (54) is located between the magnetic plate (55) and the outer box body (3), a through hole is formed on the magnetic plate (55), a limiting bolt (59) is inserted into the through hole of the magnetic plate (55), and the end of the limiting bolt (59) is installed on the outer box body (3) through a thread.

2. A brake assist device for a trackless rubber-tyred mining vehicle according to claim 1, characterized in that: At least one reinforcing rib (58) is fixed between the magnetic attraction plate (55) and the sliding sleeve (53).

3. The brake assist device for a trackless rubber-tyred mining vehicle according to claim 1, characterized in that: The brake disc (57) comprises a fixed steel plate (571) and a friction body (572); a plurality of connectors are formed on a side of the fixed steel plate (571) facing the auxiliary brake disc (4); the plurality of connectors are distributed in a network; and the friction body (572) is fixed to the fixed steel plate (571) by a press.

4. A brake assist device for a trackless rubber-tyred mining vehicle according to claim 1, characterized in that: A brake disc cooling module (6) for cooling the auxiliary brake disc (4) is fixed inside the outer box (3).

5. A brake assist device for a trackless rubber-tyred mining vehicle according to claim 4, characterized in that: The brake disc cooling module (6) comprises a water storage tank (62) and a diverter box (63). A water pump (61) is fixed inside the outer box body (3). The water inlet end of the water pump (61) is connected to the water storage tank (62). A water injection hole connected to the inner cavity of the water storage tank (62) is formed on the side wall of the outer box body (3). A one-way valve is fixed in the water injection hole. The water outlet end of the water pump (61) is connected to the diverter box (63). The support rod (5 2) A water outlet channel (64) is formed in the center to connect the diverter box (63) and the inner cavity of the sliding sleeve (53); a drip hole (66) is formed on the outer wall of the sliding sleeve (53) at a position corresponding to the auxiliary brake disc (4); a water injection nozzle is formed at one end of the support rod (52) inserted into the sliding sleeve (53); a drain valve (65) for blocking the water outlet channel (64) is fixed at the end of the water injection nozzle; and the drain valve (65) is a pressure valve.

6. A brake assist device for a trackless rubber-tyred vehicle for mining according to claim 5, characterized in that: A groove is formed on the outside of one end of the support rod (52) close to the water outlet, and a sealing ring is embedded in the groove.

7. A brake assist system for a trackless rubber-tyred vehicle for mining, characterized in that: Including data acquisition module, control module, auxiliary brake module, brake disc cooling module, alarm module, The data acquisition module includes a wheel speed sensor installed on the wheel, a temperature sensor installed near the brake disc, an acceleration sensor installed on the vehicle chassis, and a brake pedal travel sensor installed in the cab, and the vehicle status is collected through various sensors; The control module determines whether the vehicle is in a braking state by analyzing the data from the data acquisition module, and sends instructions to the auxiliary braking module, the brake disc cooling module, and the alarm module; The auxiliary brake module uses the suction force generated by the electromagnet to force the brake disc to approach the auxiliary brake disc for auxiliary braking; The brake disc cooling module sprays water onto the auxiliary brake disc through a water pump to cool the auxiliary brake disc when the auxiliary brake module is started; The alarm module is installed in the cab and is used to send sound and light alarm information to the driver when the auxiliary brake module is activated, so as to remind the driver to pay attention to the vehicle status.

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