Mechanical braking device

Abstract

The invention relates to the field of braking devices, and particularly discloses a mechanical braking device. The two hydraulic pistons and the two brake pads are arranged in the brake caliper, the first hydraulic oil pipe supplies oil to the first hydraulic piston, the second hydraulic oil pipe supplies oil to the second hydraulic piston, the first hydraulic oil pipe communicates with the second hydraulic oil pipe, and the oil valve is arranged on the second hydraulic oil pipe. The first hydraulic oil pipe supplies oil to the first hydraulic piston and drives the first brake pad to make contact with the brake disc, then the second hydraulic oil pipe supplies oil to the second hydraulic piston and drives the second brake pad to make contact with the brake disc, the friction force borne by the brake disc is increased, and the brake disc is promoted to stop rotating rapidly. The friction force of the brake disc can be effectively prevented from being reduced due to repeated friction of the same position of the brake disc, the high friction coefficient of the surface of the brake disc is effectively maintained, and the brake disc quickly stops rotating after being stressed.

Description

Technical Field

[0001] The invention belongs to the technical field of brake devices, and in particular relates to a mechanical brake device. Background Art

[0002] A brake is a device that slows down, stops or keeps moving parts in a machine. It is a mechanical part that stops or slows down moving parts in a machine, also known as a brake or gate.

[0003] There are many types of brakes. According to different working principles, they can be divided into friction brakes, magnetic powder brakes, electromagnetic brakes, etc. Friction brakes include belt type, disc type and drum type, etc., which are mainly used to slow down or stop the machine.

[0004] Friction brakes mainly rely on the hydraulic system to drive the hydraulic piston to extend. The extended hydraulic piston drives the brake pad close to the brake disc, and relies on the friction between the brake pad and the brake disc to force the rotating brake disc to stop rotating. However, since the friction position between the brake pad and the brake disc is fixed, when the brake pad and the brake disc are in contact and friction for a long time, the temperature of the brake disc will rise rapidly, causing the surface to soften and reduce friction. At this time, there will be a risk of brake failure. Therefore, it is necessary to improve and adjust the structure of traditional friction brakes to avoid the risk of brake disc heating up and reducing friction as much as possible. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a mechanical braking device to solve the problem that the brake disc of the traditional friction brake will heat up after long-term braking, resulting in a decrease in the friction force of the brake disc.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A mechanical braking device, comprising:

[0008] A brake disc, wherein a mounting hole is provided on the brake disc;

[0009] A brake caliper is arranged on the brake disc and is used to limit the rotation of the brake disc. It includes a mounting shell that is clamped on the brake disc, a first hydraulic piston fixedly mounted on the mounting shell, and a first hydraulic oil pipe connected to the first hydraulic piston pipeline. A second hydraulic piston is fixedly connected to the mounting shell, and a second hydraulic oil pipe is connected between the second hydraulic piston and the first hydraulic oil pipe. An oil valve for opening and closing the second hydraulic oil pipe is fixedly connected to the second hydraulic oil pipe. A first brake pad that can contact the brake disc is fixedly connected to the end of the first hydraulic piston, and a second brake pad that can contact the brake disc is fixedly connected to the end of the second hydraulic piston.

[0010] Preferably, a plurality of heat dissipation grooves are provided on the outer wall of the brake disc, and the directions of the heat dissipation grooves are inclined with respect to the rotation direction of the brake disc.

[0011] Preferably, the brake disc is arranged in double layers, and a first heat dissipation bar for heat dissipation is fixedly connected between the brake discs, the first heat dissipation bar is arranged in an S shape, and the two ends of the first heat dissipation bar are respectively facing the inner edge and the outer edge of the brake disc, and the first heat dissipation bar is arranged at an angle.

[0012] Preferably, a second heat dissipation bar connected to the brake disc is arranged between adjacent first heat dissipation bars.

[0013] Preferably, the contact surfaces of the brake disc, the first brake pad and the second brake pad are staggered.

[0014] Preferably, a temperature sensor for detecting the temperature of the brake disc is fixedly connected to the inner wall of the mounting shell, the oil valve signal is connected to a host computer that receives data transmitted by the temperature sensor, and the host computer controls the opening and closing of the oil valve according to the data transmitted by the temperature sensor.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention arranges two groups of hydraulic pistons and brake pads inside the brake caliper, a first hydraulic oil pipe supplies oil to the first hydraulic piston, and a second hydraulic oil pipe supplies oil to the second hydraulic piston, the first hydraulic oil pipe is connected to the second hydraulic oil pipe, and an oil valve is arranged on the second hydraulic oil pipe. During braking, the first hydraulic oil pipe first supplies oil to the first hydraulic piston, driving the first brake pad to contact with the brake disc. When the friction force of the first brake pad is insufficient to stop the rotation of the brake disc, the second hydraulic oil pipe supplies oil to the second hydraulic piston, driving the second brake pad to contact with the brake disc, increasing the friction force exerted on the brake disc, and prompting the brake disc to stop rotating quickly. Since the first brake pad and the second brake pad are arranged separately, it is possible to effectively avoid the two brake pads repeatedly rubbing against the same position of the brake disc, thereby avoiding the temperature rise and friction decrease of the brake disc, effectively maintaining a high friction coefficient on the surface of the brake disc, and causing the brake disc to stop rotating quickly after being subjected to force. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the brake caliper structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the external structure of the brake disc of the present invention;

[0020] Figure 4 It is a schematic diagram of the internal structure of the brake disc of the present invention;

[0021] In the figure: 1. brake disc; 2. heat dissipation groove; 3. mounting hole; 4. first heat dissipation strip; 5. second heat dissipation strip; 6. mounting shell; 7. first hydraulic piston; 8. first hydraulic oil pipe; 9. second hydraulic piston; 10. second hydraulic oil pipe; 11. oil valve; 12. first brake pad; 13. second brake pad; 14. temperature sensor. DETAILED DESCRIPTION

[0022] 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.

[0023] Embodiment 1:

[0024] See also Figure 1 - Figure 4 As shown, a mechanical braking device comprises:

[0025] A brake disc 1, wherein a mounting hole 3 is formed on the brake disc 1;

[0026] A brake caliper is arranged on the brake disc 1 and is used to limit the rotation of the brake disc 1. It includes a mounting shell 6 that is clamped on the brake disc 1, a first hydraulic piston 7 that is fixedly mounted on the mounting shell 6, and a first hydraulic oil pipe 8 that is pipeline-connected to the first hydraulic piston 7. A second hydraulic piston 9 is fixedly connected to the mounting shell 6, and a second hydraulic oil pipe 10 is connected between the second hydraulic piston 9 and the first hydraulic oil pipe 8. An oil valve 11 for opening and closing the second hydraulic oil pipe 10 is fixedly connected to the second hydraulic oil pipe 10. A first brake pad 12 that can contact the brake disc 1 is fixedly connected to the end of the first hydraulic piston 7, and a second brake pad 13 that can contact the brake disc 1 is fixedly connected to the end of the second hydraulic piston 9.

[0027] As can be seen from the above, when it is necessary to apply friction force to the brake disc 1 to stop the rotation of the brake disc 1, oil is supplied to the first hydraulic piston 7 through the first hydraulic oil pipe 8, causing the first hydraulic piston 7 to extend, and then the first hydraulic piston 7 drives the first brake pad 12 to approach the brake disc 1. At this time, the friction between the first brake pad 12 and the brake disc 1 will limit the rotation of the brake disc 1. If the rotation of the brake disc 1 needs to be stopped quickly, the oil valve 11 can be opened. After the oil valve 11 is opened, the first hydraulic oil pipe 8 supplies oil to the second hydraulic oil pipe 10, and the second hydraulic oil pipe 10 supplies oil to the second hydraulic piston 9. The second hydraulic piston 9 drives the second brake pad 13 to fit the surface of the brake disc 1, thereby increasing the friction force on the brake disc 1 and helping the brake disc 1 to stop rotating quickly.

[0028] The contact surfaces of the brake disc 1 and the first brake pad 12 and the second brake pad 13 are staggered, so that the friction positions of the first brake pad 12 and the second brake pad 13 and the brake disc 1 are staggered, effectively avoiding the failure caused by the entire surface of the brake disc 1 heating up. The first brake pad 12 is firstly used to fit the brake disc 1, and friction force is applied to the brake disc 1 to limit its rotation. Then, the second brake pad 13 is used to fit the brake disc 1, and friction force is applied to the brake disc 1. The rotation stop time of the brake disc 1 is shortened by increasing the friction force on the brake disc 1. Moreover, the contact positions of the brake disc 1 with the first brake pad 12 and the second brake pad 13 are different. When the corresponding positions of the brake disc 1 and the first brake pad 12 are heated, the temperature of the corresponding contact parts of the brake disc 1 and the second brake pad 13 does not rise to an extreme value, which means that the friction between the second brake pad 13 and the brake disc 1 is not significantly reduced due to the temperature rise, ensuring that there is still a sufficiently large friction between the brake disc 1 and the second brake pad 13.

[0029] A temperature sensor 14 for detecting the temperature of the brake disc 1 is fixedly connected to the inner wall of the mounting shell 6 , and the oil valve 11 is signal-connected to a host computer for receiving data transmitted by the temperature sensor 14 , and the host computer controls the opening and closing of the oil valve 11 according to the data transmitted by the temperature sensor 14 .

[0030] In order to facilitate the first brake pad 13 to start quickly after the temperature of the second brake pad 12 rises, the temperature of the friction position between the brake disc 1 and the first brake pad 12 can be timely obtained through the temperature sensor 14 arranged on the mounting shell 6, and the upper computer receives the sensing data transmitted by the temperature sensor 14 in real time. When the temperature of the inner ring of the brake pad 1 rises significantly under the action of the first brake pad 12, the upper computer controls the oil valve 11 to open. At this time, the second hydraulic oil pipe 10 is connected, and the second hydraulic piston 9 is extended under the pressure of the hydraulic oil to abut on the brake disc 1, thereby increasing the friction force on the brake disc 1 and helping the brake disc 1 to stop rotating quickly.

[0031] Embodiment 2:

[0032] See also Figure 1 - Figure 4 As shown, a mechanical braking device comprises:

[0033] A brake disc 1, wherein a mounting hole 3 is formed on the brake disc 1;

[0034] A brake caliper is arranged on the brake disc 1 and is used to limit the rotation of the brake disc 1. It includes a mounting shell 6 that is clamped on the brake disc 1, a first hydraulic piston 7 that is fixedly mounted on the mounting shell 6, and a first hydraulic oil pipe 8 that is pipeline-connected to the first hydraulic piston 7. A second hydraulic piston 9 is fixedly connected to the mounting shell 6, and a second hydraulic oil pipe 10 is connected between the second hydraulic piston 9 and the first hydraulic oil pipe 8. An oil valve 11 for opening and closing the second hydraulic oil pipe 10 is fixedly connected to the second hydraulic oil pipe 10. A first brake pad 12 that can contact the brake disc 1 is fixedly connected to the end of the first hydraulic piston 7, and a second brake pad 13 that can contact the brake disc 1 is fixedly connected to the end of the second hydraulic piston 9.

[0035] As can be seen from the above, when it is necessary to apply friction force to the brake disc 1 to stop the rotation of the brake disc 1, oil is supplied to the first hydraulic piston 7 through the first hydraulic oil pipe 8, causing the first hydraulic piston 7 to extend, and then the first hydraulic piston 7 drives the first brake pad 12 to approach the brake disc 1. At this time, the friction between the first brake pad 12 and the brake disc 1 will limit the rotation of the brake disc 1. If the rotation of the brake disc 1 needs to be stopped quickly, the oil valve 11 can be opened. After the oil valve 11 is opened, the first hydraulic oil pipe 8 supplies oil to the second hydraulic oil pipe 10, and the second hydraulic oil pipe 10 supplies oil to the second hydraulic piston 9. The second hydraulic piston 9 drives the second brake pad 13 to fit the surface of the brake disc 1, thereby increasing the friction force on the brake disc 1 and helping the brake disc 1 to stop rotating quickly.

[0036] The outer wall of the brake disc 1 is provided with a plurality of heat dissipation grooves 2, and the direction of the heat dissipation grooves 2 is inclined with respect to the rotation direction of the brake disc 1. The heat dissipation grooves 2 can increase the outer surface area of ​​the brake disc 1, thereby increasing the heat dissipation performance of the brake disc 1, and preventing the brake performance of the brake disc 1 from failing at high temperatures.

[0037] The brake disc 1 is double-layered, and a first heat dissipation bar 4 for heat dissipation is fixedly connected between the brake discs 1. In order to increase the surface area of ​​the first heat dissipation bar 4, the first heat dissipation bar 4 is S-shaped. Since the first heat dissipation bar 4 is connected to the brake disc 1, the heat of the brake disc 1 will be transferred to the first heat dissipation bar 4, and then the heat will be dissipated outward by the first heat dissipation bar 4, thereby helping the heat of the brake disc 1 to be quickly dissipated, thereby preventing the brake disc 1 from being overheated, and the two ends of the first heat dissipation bar 4 are respectively facing the inner edge and the outer edge of the brake disc 1, and the first heat dissipation bar 4 is tilted, so that the first heat dissipation bar 4 is aligned with the rotation direction of the brake disc 1, so that the external low-temperature air flows through the gaps between the first heat dissipation bars 4 to the inside of the brake disc 1 for heat dissipation, which can improve the heat dissipation efficiency of the first heat dissipation bar 4, thereby helping the brake disc 1 to dissipate heat.

[0038] Second heat dissipation bars 5 connected to the brake disc 1 are arranged between adjacent first heat dissipation bars 4 . The second heat dissipation bars 5 fill the gaps between the first heat dissipation bars 4 to increase the inner surface area of ​​the brake disc 1 and help the brake disc 1 dissipate heat.

[0039] The contact surfaces of the brake disc 1 and the first brake pad 12 and the second brake pad 13 are staggered, so that the friction positions of the first brake pad 12 and the second brake pad 13 and the brake disc 1 are staggered, effectively avoiding the failure caused by the entire surface of the brake disc 1 heating up. The first brake pad 12 is firstly used to fit the brake disc 1, and friction force is applied to the brake disc 1 to limit its rotation. Then, the second brake pad 13 is used to fit the brake disc 1, and friction force is applied to the brake disc 1. The rotation stop time of the brake disc 1 is shortened by increasing the friction force on the brake disc 1. Moreover, the contact positions of the brake disc 1 with the first brake pad 12 and the second brake pad 13 are different. When the corresponding positions of the brake disc 1 and the first brake pad 12 are heated, the temperature of the corresponding contact parts of the brake disc 1 and the second brake pad 13 does not rise to an extreme value, which means that the friction between the second brake pad 13 and the brake disc 1 is not significantly reduced due to the temperature rise, ensuring that there is still a sufficiently large friction between the brake disc 1 and the second brake pad 13.

[0040] A temperature sensor 14 for detecting the temperature of the brake disc 1 is fixedly connected to the inner wall of the mounting shell 6 , and the oil valve 11 is signal-connected to a host computer for receiving data transmitted by the temperature sensor 14 , and the host computer controls the opening and closing of the oil valve 11 according to the data transmitted by the temperature sensor 14 .

[0041] In order to facilitate the first brake pad 13 to start quickly after the temperature of the second brake pad 12 rises, the temperature of the friction position between the brake disc 1 and the first brake pad 12 can be timely obtained through the temperature sensor 14 arranged on the mounting shell 6, and the upper computer receives the sensing data transmitted by the temperature sensor 14 in real time. When the temperature of the inner ring of the brake pad 1 rises significantly under the action of the first brake pad 12, the upper computer controls the oil valve 11 to open. At this time, the second hydraulic oil pipe 10 is connected, and the second hydraulic piston 9 is extended under the pressure of the hydraulic oil to abut on the brake disc 1, thereby increasing the friction force on the brake disc 1 and helping the brake disc 1 to stop rotating quickly.

[0042] The standard parts used in the present invention can all be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to professional and technical personnel in this field.

[0043] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, unless they are contradictory.

[0047] In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.

Claims

1. A mechanical braking device, characterized in that: include: A brake disc (1), wherein a mounting hole (3) is provided on the brake disc (1); A brake caliper is arranged on the brake disc (1) for limiting the rotation of the brake disc (1), comprising a mounting shell (6) clamped on the brake disc (1), a first hydraulic piston (7) fixedly mounted on the mounting shell (6), and a first hydraulic oil pipe (8) connected to the first hydraulic piston (7) through a pipeline, a second hydraulic piston (9) is fixedly connected to the mounting shell (6), a second hydraulic oil pipe (10) is connected between the second hydraulic piston (9) and the first hydraulic oil pipe (8), and an oil valve (11) for opening and closing the second hydraulic oil pipe (10) is fixedly connected to the second hydraulic oil pipe (10), a first brake pad (12) capable of contacting the brake disc (1) is fixedly connected to the end of the first hydraulic piston (7), and a second brake pad (13) capable of contacting the brake disc (1) is fixedly connected to the end of the second hydraulic piston (9).

2. A mechanical brake device according to claim 1, characterized in that: The outer wall of the brake disc (1) is provided with a plurality of heat dissipation grooves (2), and the directions of the heat dissipation grooves (2) are inclined with respect to the rotation direction of the brake disc (1).

3. A mechanical brake device according to claim 1, characterized in that: The brake disc (1) is arranged in two layers, and a first heat dissipation bar (4) for heat dissipation is fixedly connected between the brake discs (1); the first heat dissipation bar (4) is arranged in an S shape, and the two ends of the first heat dissipation bar (4) are respectively facing the inner edge and the outer edge of the brake disc (1); the first heat dissipation bar (4) is arranged obliquely.

4. A mechanical brake device according to claim 3, characterized in that: A second heat dissipation bar (5) connected to the brake disc (1) is arranged between adjacent first heat dissipation bars (4).

5. A mechanical brake device according to claim 1, characterized in that: The contact surfaces of the brake disc (1) and the first brake pad (12) and the second brake pad (13) are arranged in an offset manner.

6. A mechanical brake device according to claim 1, characterized in that: A temperature sensor (14) for detecting the temperature of the brake disc (1) is fixedly connected to the inner wall of the mounting shell (6); the oil valve (11) is signal-connected to a host computer for receiving data transmitted by the temperature sensor (14); and the host computer controls the opening and closing of the oil valve (11) according to the data transmitted by the temperature sensor (14).

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