Disc type driving and parking integrated brake axle and braking method thereof

Abstract

The present invention relates to a disc-type driving and parking integrated brake axle, which comprises two axles, wheels rotatably arranged at both ends of the axles, a longitudinal beam connecting the two axles, and a mounting seat arranged on the longitudinal beam; a brake disc is arranged on the rim of each wheel, a brake caliper is arranged on the brake disc, and the brake caliper is fixedly mounted on the axle through a mounting plate; each brake caliper is connected to a pneumatic control system through a parking hydraulic brake pipeline and a driving hydraulic brake pipeline, and the pneumatic control system controls the driving brake or parking brake of the brake caliper. The brake structure of the present invention is designed as a disc brake structure, and the brake caliper is braked by the parking hydraulic brake pipeline and the driving hydraulic brake pipeline respectively, and a parking brake control system and a driving brake control system are designed to provide braking power for the parking hydraulic brake pipeline and the driving hydraulic brake pipeline respectively, and the braking is reliable by combining pneumatic and hydraulic braking.

Description

Technical Field

[0001] The invention relates to the technical field of transport axles, and in particular to a disc-type integrated traveling and parking brake axle and a braking method thereof. Background Art

[0002] The existing oilfield drilling rig platform integrated transport axle systems either do not have a braking system or only have a braking function without a parking brake function. In addition, the braking system generally uses a drum brake system, which has insufficient braking capacity, and the drum brake has high and complex installation requirements. The transport axle without a parking brake has safety hazards. Therefore, the present invention provides a disc-type driving and parking integrated brake axle with driving brake and parking brake functions. Summary of the invention

[0003] In view of the deficiencies of the prior art, the present invention provides a disc-type driving and parking integrated brake axle with driving brake and parking brake functions.

[0004] The technical solution adopted by the present invention to solve its technical problems is: the disc-type integrated driving and parking brake axle includes two axles, wheels rotatably arranged at both ends of the axles, a longitudinal beam connecting the two axles and a mounting seat arranged on the longitudinal beam; a brake disc is arranged on the rim of each wheel, a brake caliper is arranged on the brake disc, and the brake caliper is fixedly installed on the axle through a mounting plate; each of the brake calipers is connected to a pneumatic control system through a parking hydraulic brake pipeline and a driving hydraulic brake pipeline, and the pneumatic control system controls the driving brake or parking brake of the brake caliper.

[0005] In a preferred embodiment of the disc type integrated driving and parking brake axle provided by the present invention, the pneumatic control system includes a parking brake control system and a driving brake control system.

[0006] In a preferred embodiment of the disc-type integrated parking and walking brake axle provided by the present invention, the parking brake control system includes a parking boost pump, a quick exhaust valve, and a power air source. The power air source, the quick exhaust valve, and the parking boost pump are connected in sequence through a high-pressure air pipe, and the parking boost pump is connected to the parking hydraulic brake pipeline.

[0007] In a preferred embodiment of the disc-type integrated driving and parking brake axle provided by the present invention, the driving brake control system includes a driving booster pump, a relay valve, an air tank, a relay valve controller and a power air source, and the power air source, the air tank, the relay valve and the driving booster pump are connected in sequence through a high-pressure air pipe, the relay valve controller is connected to the relay valve, and the driving booster pump is connected to the driving hydraulic brake pipeline.

[0008] In a preferred embodiment of the disc-type integrated driving and parking brake axle provided by the present invention, the driving brake control system and the parking brake control system share a power air source, and the driving control brake system also includes a one-way valve, which is arranged at the air inlet end of the air tank.

[0009] In a preferred embodiment of the disc-type integrated driving and parking brake axle provided by the present invention, the pneumatic control system can control multiple wheels of the axle.

[0010] In a preferred embodiment of the disc-type integrated driving and parking brake axle provided by the present invention, the mounting seat is mounted on the longitudinal beam via a pin so as to be able to freely swing within ±8°.

[0011] In a preferred embodiment of the disc-type integrated driving and parking brake axle provided by the present invention, the longitudinal beam is installed on the axle through a pin so as to be able to freely swing within ±8°.

[0012] The present invention further provides a braking method for a disc-type integrated driving and parking brake axle according to any of the above-mentioned embodiments, comprising parking braking and driving braking, wherein:

[0013] When the parking brake is applied, the power air source is cut off, the parking booster pump cannot provide hydraulic power to the active hydraulic control pipeline, and the friction plate of the brake caliper clamps the brake disc under the action of the spring to achieve parking brake; when the parking brake needs to be released, the power air source is connected, the parking booster pump provides hydraulic power to the parking hydraulic control pipeline, the hydraulic oil overcomes the work of the spring, and the friction plate is separated from the brake disc;

[0014] During service braking, the relay valve is opened by controlling the relay valve controller, and the air path from the air tank to the service booster pump is connected. The service booster pump provides hydraulic pressure through the service hydraulic brake pipeline, so that the hydraulic oil cooperates with the elastic force of the spring to push out the friction plate and clamp the brake disc to achieve service braking.

[0015] The present invention also provides a disc-type, parking-integrated brake-transfer axle system according to any of the above-mentioned embodiments, comprising two axles, wherein the two axles are provided with brake power by the same power air source.

[0016] Compared with the prior art, the beneficial effects of the disc-type integrated driving and parking brake axle provided by the present invention are: the braking structure of the present invention is designed as a disc brake structure, the brake caliper is braked by the parking hydraulic brake pipeline and the driving hydraulic brake pipeline respectively, and a parking brake control system and a driving brake control system are designed to provide braking power for the parking hydraulic brake pipeline and the driving hydraulic brake pipeline respectively, and the parking brake control system and the driving brake control system use compressed air as the power source, the power is easy to obtain and the cost is low, and the combination of pneumatic and hydraulic braking is adopted, the braking is reliable, which solves the problem of insufficient braking capacity of traditional transport axles, and also realizes parking braking. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0018] Figure 1 It is a three-dimensional structural diagram of the disc-type integrated driving and parking brake axle provided by the present invention;

[0019] Figure 2 yes Figure 1 The front view of the disc type integrated driving and parking brake axle provided;

[0020] Figure 3 yes Figure 1 The assembly structure diagram of the axle and the wheel of the provided disc type integrated driving and parking brake axle;

[0021] Figure 4 yes Figure 3 An assembly structure diagram of the wheel rim, brake disc and brake caliper provided;

[0022] Figure 5 yes Figure 1 A schematic diagram of brake control of the brake caliper of the provided disc-type integrated driving and parking brake axle;

[0023] Figure 6 It is a braking principle diagram of the brake caliper provided by the present invention. DETAILED DESCRIPTION

[0024] 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.

[0025] Embodiment 1

[0026] See also Figure 1 and Figure 2The disc-type integrated parking and driving brake axle 1 comprises two axles 101, wheels 102 rotatably arranged at both ends of the axles, a longitudinal beam 103 connecting the two axles 101, and a mounting seat 104 arranged on the longitudinal beam 103. Preferably, the mounting seat 104 of this embodiment can be freely swung ±8° on the longitudinal beam 103 through a pin, and the longitudinal beam 103 can be freely swung ±8° on the axle 101 through a pin. The mounting seat, longitudinal beam, and the mounting structure of the wheel and axle of this embodiment can refer to the structure of the 80t new oil drilling rig tire trailer axle disclosed in Chinese patent CN201921415400.3, wherein the swing angle of the longitudinal beam of the present invention is designed to be ±8°, and of course it can also be designed to be ±12° or other angles according to the application.

[0027] A brake disc 1022 is provided on the rim 1021 of each wheel 102. The rim 1021 of this embodiment is a rim with a brake disc mounting flange. The brake disc 1022 is fixedly mounted on the flange by bolts. A brake caliper 105 is provided on the brake disc 1022. The brake caliper 105 is fixedly mounted on the axle 101 by a mounting plate 106. Figure 3 and Figure 4 As shown;

[0028] like Figure 5 and Figure 6 As shown, each of the brake calipers 105 is connected to the pneumatic control system 2 via a parking hydraulic brake pipeline 107 and a driving hydraulic brake pipeline 108 , and the pneumatic control system 2 controls the driving brake or parking brake of the brake caliper 105 .

[0029] The braking structure of the present embodiment is designed as a disc brake structure, and the brake calipers are braked by the parking hydraulic brake pipeline and the driving hydraulic brake pipeline respectively, and a parking brake control system and a driving brake control system are designed to provide braking power for the parking hydraulic brake pipeline and the driving hydraulic brake pipeline respectively. The parking brake control system and the driving brake control system use compressed air as a power source, and the power is easy to obtain and the cost is low. The combination of pneumatic and hydraulic braking is adopted, and the braking is reliable, which solves the problem of insufficient braking capacity of traditional transport axles and also realizes parking braking.

[0030] Embodiment 2

[0031] On the basis of the first embodiment, the structure of the pneumatic control system 2 is further disclosed. The pneumatic control system 2 of this embodiment includes a parking brake control system 201 and a service brake control system 202 .

[0032] The parking brake control system 201 includes a parking booster pump 2011, a quick exhaust valve 2012, and a power gas source 2013. The power gas source 2013, the quick exhaust valve 2012, and the parking booster pump 2011 are connected in sequence through a high-pressure air pipe, and the parking booster pump 2011 is connected to the parking hydraulic brake pipeline 107.

[0033] The service brake control system 202 includes a service boost pump 2021, a relay valve 2022, an air tank 2023, a relay valve controller 2024 and a power air source. The power air source, the air tank 2023, the relay valve 2022 and the service boost pump 2021 are connected in sequence through a high-pressure air pipe. The relay valve controller 2024 is connected to the relay valve 2022, and the service boost pump 2021 is connected to the service hydraulic brake pipeline 108.

[0034] Preferably, the service brake control system 202 and the parking brake control system 201 share a power gas source 2013 , and the service control brake system 202 further includes a one-way valve 2025 , and the one-way valve 2025 is arranged at the air inlet end of the air storage tank 2023 .

[0035] Embodiment 3

[0036] On the basis of the first or second embodiment, the pneumatic control system 2 of this embodiment can control the wheels 102 of multiple axles 1. In this embodiment, the pneumatic control system 2 controls two axles 102, and the two axles 102 are provided with braking power by the same power air source 2013 to form a mobile axle system.

[0037] The braking method of the disc type integrated driving and parking brake axle of the present invention includes parking braking and driving braking, wherein:

[0038] When the parking brake is applied, the power air source is cut off, the parking booster pump cannot provide hydraulic power to the active hydraulic control pipeline, and the friction plate of the brake caliper clamps the brake disc under the action of the spring to achieve parking brake; when the parking brake needs to be released, the power air source is connected, the parking booster pump provides hydraulic power to the parking hydraulic control pipeline, the hydraulic oil overcomes the work of the spring, and the friction plate is separated from the brake disc;

[0039] During service braking, the relay valve is opened by controlling the relay valve controller, and the air path from the air tank to the service booster pump is connected. The service booster pump provides hydraulic pressure through the service hydraulic brake pipeline, so that the hydraulic oil cooperates with the elastic force of the spring to push out the friction plate and clamp the brake disc to achieve service braking.

[0040] The brake caliper of the present invention needs to be injected with hydraulic oil, and the recommended oil is Esso H46 anti-wear hydraulic oil.

[0041] The parking brake oil filling process is as follows:

[0042] Step 1: Adjust the service brake to the "non-braking" state, remove the muffler valve of the parking booster pump connected to the air, and input the pressure gas of 0.2-0.6MPa into the port, so that the piston of the parking booster pump is in the retracted state;

[0043] Step 2: Open the bleed plug of the brake caliper, and pass 0.2-0.6MPa pressure gas from the parking booster pump cylinder, clean the inside of the pipeline, and then disconnect the pressure gas;

[0044] Step 3: Introduce the transmission oil of the brake system from the cylinder of the parking booster pump, and use a container to collect the outflowing transmission oil at the exhaust hole of the brake caliper. When the hydraulic oil flows out steadily without bubbles, fill the brake caliper and the parking booster pump with oil, and close the bleed plug;

[0045] Step 4: Pass 0.2-0.6MPa pressure from the parking booster pump cylinder. After 5 minutes, if there are no bubbles in the cylinder and the cylinder liquid level does not drop, it is considered that the bleed plug has been sealed, there is no gas in the oil system, the oil filling process is completed, and the brake is in a ready state;

[0046] Step 5: Repeatedly turn the power air source on and off to detect the working action of the parking brake; keep the power air source connected, turn the control air source on and off to detect the working action of the service brake.

[0047] The service brake oil filling process is as follows:

[0048] Step 1: Adjust the brake of the vehicle to the "non-braking" state, remove the muffler valve of the driving booster pump connected to the air, and input the pressure gas of 0.2-0.6MPa into the port, so that the piston of the driving booster pump is in the retracted state;

[0049] Step 2: Open the bleed plug of the brake caliper, and pass 0.2-0.6MPa pressure gas from the driving booster pump cylinder, clean the inside of the pipeline and then disconnect the pressure gas;

[0050] Step 3: Install the one-way valve, and let the transmission oil of the brake system flow into the oil cylinder of the driving booster pump. Use a container to collect the outflowing transmission oil at the exhaust hole of the brake caliper. When the hydraulic oil flows out steadily without bubbles, fill the brake caliper and driving booster pump with oil, and close the bleed plug.

[0051] Step 4: After closing the bleed plug, use the oil pump to add 250ml~300ml of hydraulic oil into the system through the one-way valve. The filling pressure should not exceed 0.8MPa (when filling with the hand oil pump, be sure to first remove the air in the hand oil pump itself and the hand oil pump pipeline, and then fill the hydraulic system with oil);

[0052] Step 5: Pass 0.2-0.6MPa pressure into the oil cylinder of the driving booster pump. After 5 minutes, no bubbles emerge from the oil cylinder and the oil level in the oil cylinder does not drop. It is considered that the bleed plug has been sealed and there is no gas in the oil system. The oil filling process is completed and the brake caliper is in ready state.

[0053] After the service brake and parking brake are refueled and exhausted, the brake function can be tested. The parking brake can be tested by repeatedly turning the power gas source on and off; the service brake can be tested by keeping the power gas source on and turning the control gas source on and off.

[0054] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A disc type integrated driving and parking brake transfer axle, comprising two axles, wheels rotatably arranged at both ends of the axles, a longitudinal beam connecting the two axles, and a mounting seat arranged on the longitudinal beam, characterized in that: The mounting seat is mounted on the longitudinal beam via a pin and can freely swing by ±8°; A brake disc is provided on the rim of each wheel, a brake caliper is provided on the brake disc, and the brake caliper is fixedly mounted on the axle through a mounting plate; Each of the brake calipers is connected to a pneumatic control system through a parking hydraulic brake pipeline and a driving hydraulic brake pipeline, and the pneumatic control system controls the driving brake or parking brake of the brake caliper, which includes a parking brake control system and a driving brake control system; The parking brake control system includes a parking booster pump, a quick exhaust valve, and a power gas source, wherein the power gas source, the quick exhaust valve, and the parking booster pump are connected in sequence through a high-pressure gas pipe, and the parking booster pump is connected to the parking hydraulic brake pipeline; The service brake control system includes a service booster pump, a relay valve, an air tank, a relay valve controller and a power gas source, wherein the power gas source, the air tank, the relay valve and the service booster pump are connected in sequence through a high-pressure air pipe, the relay valve controller is connected to the relay valve, and the service booster pump is connected to the service hydraulic brake pipeline; The braking method of the disc type integrated driving and parking brake transfer axle includes parking braking and driving braking, wherein: When the parking brake is applied, the power air source is cut off, the parking booster pump cannot provide hydraulic power to the active hydraulic control pipeline, and the friction plate of the brake caliper clamps the brake disc under the action of the spring to achieve parking brake; when the parking brake needs to be released, the power air source is connected, the parking booster pump provides hydraulic power to the parking hydraulic control pipeline, the hydraulic oil overcomes the work of the spring, and the friction plate is separated from the brake disc; When braking, the relay valve controller is controlled to open the relay valve, and the air path from the air storage tank to the driving booster pump is connected. The driving booster pump provides hydraulic pressure through the driving hydraulic brake pipeline, so that the hydraulic oil cooperates with the elastic force of the spring to push out the friction plate and clamp the brake disc, thus achieving driving braking; The service brake control system and the parking brake control system share a power gas source, and the service control brake system also includes a one-way valve, which is arranged at the air inlet end of the air storage tank.

2. The disc-type integrated driving and parking brake transfer axle according to claim 1, characterized in that: The pneumatic control system can control wheels of a plurality of the axles.

3. The disc-type integrated driving and parking brake transfer axle according to claim 1, characterized in that: The longitudinal beam is mounted on the axle via a pin so as to be freely swingable within ±8°.

4. A disc type driving and parking integrated brake transfer axle system, characterized in that: It comprises two disc-type integrated braking axles for traveling and parking as claimed in any one of claims 1 to 3, wherein the two axles are provided with braking power by the same power air source.

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