Electric chassis braking device

Abstract

The invention discloses an electric chassis braking device, which belongs to the technical field of braking devices and is characterized in that an outer circular groove and an inner circular groove are formed in a braking body and are respectively provided with a first braking structure and a second braking structure. During braking, the first braking structure hydraulically drives the first connecting piece and the second connecting piece to drive the first braking piece to apply braking to the side face of the outer circular groove; the second brake structure enables a second brake pad to be tightly attached to the inner wall of an inner circular groove to generate friction force through an abutting pin in a supporting ring, and wheel braking is achieved through cooperation of the second brake structure and the inner circular groove. And after braking is finished, the spring assists each component to reset. According to the device, through the double-brake structural design, the brake reliability is greatly improved, and it is ensured that braking force is evenly distributed; spring reset and elastic sheet design are combined, so that the braking stability is enhanced; and the hydraulic control mode also realizes flexible adjustment of the braking force.

Description

Technical Field

[0001] The present invention relates to the technical field of braking devices, and particularly to an electric chassis braking device. Background Art

[0002] In the development process of modern electric vehicles, the braking performance of the electric chassis is crucial, which is directly related to the safety and stability of vehicle driving. At present, there are some problems to be solved urgently in the actual application of electric chassis braking devices on the market. Most of the existing electric chassis braking devices adopt a single braking structure. In the face of complex road conditions or emergency braking situations, the braking effect is often not ideal, and the reliability and stability of braking are difficult to be fully guaranteed. For example, some devices only brake the braking body at a single position. When the braking part wears or fails, the performance of the entire braking device will drop significantly, and even may lead to braking failure, bringing great potential safety hazards to driving safety. At the same time, the driving and resetting methods of some braking devices are not reasonable enough. During the braking process, the brake pads do not fit tightly with the braking body, and it is easy to slip, which not only reduces the braking effect, but also aggravates the wear of the brake pads and the braking body, shortening the service life of the braking device.

[0003] Therefore, the present invention provides an electric chassis braking device to solve the above problems. Summary of the Invention

[0004] Aiming at the above existing technical deficiencies, the purpose of the present invention is to provide an electric chassis braking device. By respectively arranging the first and second braking structures driven by hydraulic pressure in the outer circular groove and the inner circular groove of the braking body, and cooperating with the spring reset and elastic sheet design, a braking effect with high reliability, uniform distribution of braking force and controllable operation is realized.

[0005] To solve the above technical problems, the present invention adopts the following technical solutions: The present invention provides an electric chassis braking device, including: A brake housing, which is fixedly installed on the chassis; A rotating shaft, one end of which passes through the brake housing and is fixed to the wheel; A braking body, which rotates synchronously with the rotating shaft; Wherein, the braking body is provided with an outer circular groove and an inner circular groove. The first braking structure is arranged inside the outer circular groove, and the second braking structure is arranged inside the inner circular groove. The first braking structure includes a first brake pad capable of applying a braking effect to the side surface of the outer circular groove, and the second braking structure includes a second brake pad capable of applying a braking effect to the inner circular groove.

[0006] Preferably, a connection shell is fixed on the brake shell. A first connecting member and a second connecting member are slidably installed inside the connection shell. The number of the first brake pads is two, and the two first brake pads are respectively fixed on the first connecting member and the second connecting member.

[0007] Preferably, the first connecting member and the second connecting member are respectively connected to the two side walls of the connection shell through springs. A sliding shaft is fixed on one side of the first connecting member. An oil injection hole is provided on the side wall of the second connecting member. The sliding shaft is slidably inserted into the oil injection hole, and the oil injection hole is communicated with an external oil supply device through an oil pipe.

[0008] Preferably, the second braking mechanism includes two second brake pads rotatably installed on the brake shell. The two second brake pads are in contact with the inner wall of the inner circular groove and generate frictional force.

[0009] Preferably, the second braking mechanism includes a support ring fixed on the brake shell. The support ring is sleeved outside the rotating shaft. A plurality of pressing pins are circumferentially installed inside the support ring, and the pressing pins can press against the inner side of the second brake pads.

[0010] Preferably, an oil supply sliding hole adapted to the pressing pin is provided inside the support ring, and the pressing pin is slidably installed inside the oil supply sliding hole.

[0011] Preferably, an oil supply channel is provided inside the support ring, and the oil supply channel is communicated with a plurality of oil supply sliding holes.

[0012] Preferably, a hinge shaft is installed on the brake shell. The ends of the two second brake pads are both connected to the hinge shaft, and the ends of the two second brake pads away from the hinge shaft are connected through a spring.

[0013] Preferably, a fixing disk is installed at the end of the rotating shaft, and an installation hole for installing a wheel is provided on the fixing disk.

[0014] Preferably, an elastic sheet is provided inside the second brake pad.

[0015] The beneficial effects of the present invention are as follows: The braking device on this chassis adopts a design in which braking structures are respectively arranged in the inner and outer circular grooves. The first braking structure and the second braking structure can brake the braking body simultaneously. Even if one of the braking structures fails, the other can still ensure a certain braking effect, greatly improving the braking reliability and reducing the risk of braking failure. In the second braking structure, multiple abutting pins within the support ring achieve synchronous movement through the oil supply passage and the oil supply slide hole, enabling uniform pressing on the second brake pad, so that the frictional force between the second brake pad and the inner wall of the inner circular groove is evenly distributed. At the same time, the two first brake pads are symmetrically arranged, which also ensures the balance of the braking force on the side of the outer circular groove, thereby making the braking force evenly distributed during the entire braking process, effectively avoiding uneven force on the wheel and improving braking stability. The reset of both the first brake pad and the second brake pad is achieved through springs, ensuring that the braking components can accurately return to their initial positions after each braking, and preventing the braking effect from being affected by component position deviation. The elastic sheet provided inside the second brake pad enables it to better fit the inner wall of the inner circular groove. While increasing the frictional force, it also helps the brake pad to return to its original shape after braking, further improving the stability and reliability of the braking process. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 is a schematic structural diagram of the braking device.

[0016] Figure 2 is an internal sectional view of the brake housing.

[0017] Figure 3 is Figure 2 a sectional view taken along the A - A direction in

[0018] Figure 4 is Figure 2 an enlarged view of part B in

[0019] Figure 5 is Figure 2 a sectional view taken along the C - C direction in

[0020] Figure 6 is a structural diagram of the brake body.

[0021] Figure 7 is a sectional view of the support ring.

[0022] In the figures: 1. Brake housing, 2. Rotating shaft, 3. Brake body, 31. Outer circular groove, 32. Inner circular groove, 4. First brake pad, 5. Second brake pad, 6. Connecting shell, 7. Fixed disk, 8. Support ring, 9. Hinge shaft, 10. Spring, 11. Oil supply passage, 12. Abutting pin, 13. First connecting piece, 14. Second connecting piece. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following specific embodiments are used to illustrate the present invention, but they do not limit the invention.

[0024] Embodiment 1 As Figures 1-7 shown, in this embodiment, an electric chassis braking device is provided, including a brake housing 1, a rotating shaft 2, and a brake body 3.

[0025] The brake housing 1 is fixedly installed on the chassis, playing a role in supporting and fixing the entire braking device.

[0026] One end of the rotating shaft 2 passes through the brake housing 1 and is fixed to the wheel. When the wheel rotates, the rotating shaft 2 rotates accordingly, and the braking body 3 rotates synchronously with the rotating shaft 2.

[0027] The braking body 3 rotates synchronously with the rotating shaft 2.

[0028] Among them, the braking body 3 is provided with an outer circular groove 31 and an inner circular groove 32. The inside of the outer circular groove 31 is provided with a first braking structure, and the inside of the inner circular groove 32 is provided with a second braking structure. The first braking structure includes a first brake pad 4 that can apply a braking effect to the side surface of the outer circular groove 31, and the second braking structure includes a second brake pad 5 that can apply a braking effect to the inner circular groove 32. When braking is required, the first brake pad 4 in the first braking structure applies a braking effect to the side surface of the outer circular groove 31, and the second brake pad 5 in the second braking structure applies a braking effect to the inner circular groove 32. The braking body 3 is decelerated through friction, and then the wheel is decelerated. The basic structure of the braking device is constructed. By respectively arranging the braking structures in the inner and outer circular grooves 31, the braking body 3 can be braked from two different positions, increasing the reliability and effect of braking. An elastic piece is provided inside the second brake pad 5. The elastic piece inside the second brake pad 5 can increase the elasticity of the second brake pad 5. When the second brake pad 5 contacts the inner wall of the inner circular groove 32, the elastic piece can make the second brake pad 5 better fit the inner wall of the inner circular groove 32, increasing the friction force. At the same time, after braking, the elastic piece also helps the second brake pad 5 to return to its original state, improving the braking effect and recovery performance of the second brake pad 5, making the braking process more stable and reliable.

[0029] Embodiment 2 As Figures 2-4 shown, on the basis of Embodiment 1, this embodiment provides a driving method for the first brake pad 4, which is specifically as follows: A connecting shell 6 is fixed on the brake housing 1. A first connecting member 13 and a second connecting member 14 are slidably installed inside the connecting shell 6. The number of the first brake pads 4 is two, and the two first brake pads 4 are respectively fixed on the first connecting member 13 and the second connecting member 14. When braking is operated, the first connecting member 13 and the second connecting member 14 slide inside the connecting shell 6, driving the first brake pad 4 to approach the side surface of the outer circular groove 31, thereby applying a braking effect, providing a slidable mounting structure for the first brake pad 4, enabling the first brake pad 4 to flexibly contact and separate from the side surface of the outer circular groove 31, and realizing the functions of braking and releasing braking.

[0030] The first connecting member 13 and the second connecting member 14 are respectively connected to the two side walls of the connecting shell 6 through springs 10. A sliding shaft is fixed on one side of the first connecting member 13, and an oil injection hole is provided on the side wall of the second connecting member 14. The sliding shaft is slidably inserted into the interior of the oil injection hole. The oil injection hole is communicated with an external oil supply device through an oil pipe. The spring 10 plays a reset role, making the first connecting member 13 and the second connecting member 14 return to their initial positions after braking. The sliding shaft is slidably inserted into the interior of the oil injection hole. When the external oil supply device supplies oil to the oil injection hole through the oil pipe, the pressure of the oil pushes the sliding shaft to move, thereby driving the first connecting member 13 and the second connecting member 14 to slide, making the first brake pad 4 contact the side surface of the outer circular groove 31 to achieve braking. The spring 10 is used to realize the reset function, and at the same time, the sliding of the first connecting member 13 and the second connecting member 14 is controlled through the hydraulic principle (injecting oil to push the sliding shaft), making the braking operation more stable and controllable.

[0031] A hinge shaft 9 is installed on the brake shell 1. The ends of the two second brake pads 5 are both connected to the hinge shaft 9. The ends of the two second brake pads 5 away from the hinge shaft 9 are connected through a spring 10. The hinge shaft 9 on the brake shell 1 provides a fulcrum for the rotation of the two second brake pads 5, and the ends of the two second brake pads 5 away from the hinge shaft 9 are connected through a spring 10. When braking, the abutting pin 12 presses against the second brake pad 5, making the second brake pad 5 rotate around the hinge shaft 9 and contact the inner wall of the inner circular groove 32. After braking, the elastic force of the spring 10 makes the second brake pad 5 return to its initial position. Through the cooperation of the hinge shaft 9 and the spring 10, the rotation and reset functions of the second brake pad 5 are realized, ensuring that the second brake pad 5 can work normally and return to its original state after braking.

[0032] A fixing disk 7 is installed at the end of the rotating shaft 2. The fixing disk 7 is provided with mounting holes for mounting the wheels, making the wheels firmly connected to the rotating shaft 2, ensuring that the wheels can drive the rotating shaft 2 to rotate synchronously when the wheels rotate, providing a reliable mounting structure for the wheels, ensuring the connection stability between the wheels and the rotating shaft 2, and enabling the entire braking device to work normally.

[0033] Embodiment 3 As Figures 5-7 shown, on the basis of Embodiment 1 and Embodiment 2, this embodiment provides the structure of the second braking mechanism, which is specifically as follows: The second braking mechanism includes two second brake pads 5 rotatably installed on the brake shell 1. The two second brake pads 5 contact the inner wall of the inner circular groove 32 and generate frictional force. When the braking body 3 rotates with the rotating shaft 2, frictional force is generated between the second brake pads 5 and the inner wall of the inner circular groove 32, thereby playing a braking role on the braking body 3, providing a specific implementation method of the second braking structure, and realizing braking through the frictional force between the rotating second brake pads 5 and the inner wall of the inner circular groove 32. The structure is simple and effective.

[0034] The second braking mechanism includes a support ring 8 fixed to the brake housing 1. The support ring 8 is sleeved outside the rotating shaft 2. A plurality of abutting pins 12 are circumferentially installed inside the support ring 8. The abutting pins 12 can press against the inner side of the second brake pad 5. When braking is required, the circumferentially installed plurality of abutting pins 12 can press against the inner side of the second brake pad 5, making the second brake pad 5 contact the inner wall of the inner circular groove 32 more tightly, increasing the friction force, improving the braking effect. By the abutting pins 12, the contact pressure between the second brake pad 5 and the inner wall of the inner circular groove 32 is enhanced, further improving the braking effect and ensuring the reliability of braking.

[0035] An oil supply slide hole adapted to the abutting pin 12 is provided inside the support ring 8. The abutting pin 12 is slidably installed inside the oil supply slide hole. When oil is supplied into the oil supply slide hole, the pressure of the oil pushes the abutting pin 12 to slide inside the oil supply slide hole, thereby realizing the function of pressing the second brake pad 5. It provides a specific channel and space for the sliding of the abutting pin 12, ensuring that the abutting pin 12 can accurately press against the second brake pad 5 and making the braking process more stable and precise.

[0036] An oil supply passage 11 is provided inside the support ring 8. The oil supply passage 11 communicates with a plurality of oil supply slide holes. An external oil supply device transports oil to each oil supply slide hole through the oil supply passage 11 at the same time, enabling the plurality of abutting pins 12 to act simultaneously, realizing uniform pressing on the second brake pad 5, ensuring that the plurality of abutting pins 12 can act synchronously, making each part of the second brake pad 5 receive uniform pressure, and thus making the braking effect more uniform and stable.

[0037] Working principle: This braking device is mainly composed of components such as a brake housing 1, a rotating shaft 2, a brake body 3, a first braking structure, and a second braking structure. The brake housing 1 is fixedly installed on the chassis and serves as the support foundation for the entire braking device. One end of the rotating shaft 2 passes through the brake housing 1 and is fixed to the wheel. When the wheel rotates, the rotating shaft 2 drives the brake body 3 to rotate synchronously. The brake body 3 is provided with an outer circular groove 31 and an inner circular groove 32, corresponding to the first braking structure and the second braking structure respectively. When braking is required, the two first brake pads 4 in the first braking structure act under hydraulic drive. A first connecting member 13 and a second connecting member 14 are slidably installed inside the connecting shell 6 on the brake housing 1, and the first brake pads 4 are respectively fixed to the two. The external oil supply device supplies oil to the oil injection hole through an oil pipe, and the pressure of the oil pushes the sliding shaft, thereby driving the first connecting member 13 and the second connecting member 14 to slide inside the connecting shell 6, so that the first brake pads 4 apply a braking effect to the side surface of the outer circular groove 31. At the same time, the second braking structure also starts to work, and the two second brake pads 5 rotatably installed on the brake housing 1 contact the inner wall of the inner circular groove 32. A plurality of abutting pins 12 circumferentially installed inside the support ring 8 slide out of the oil supply slide holes and press against the inner sides of the second brake pads 5 under hydraulic action, so that the second brake pads 5 contact the inner wall of the inner circular groove 32 more closely, generating frictional force. The first braking structure and the second braking structure act together, and the brake body 3 is decelerated through frictional force, thereby realizing the braking of the wheel. After braking, the first connecting member 13 and the second connecting member 14 reset under the action of the spring 10, and the second brake pad 5 also returns to the initial position under the pulling force of the spring 10.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate rather than limit the technical solutions of the present invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that the present invention can still be modified or equivalently replaced. Any modification or partial replacement without departing from the spirit and scope of the present invention shall be covered by the scope of the claims of the present invention.

Claims

1. An electric chassis braking device, characterized in that, Including: A brake housing (1), which is fixedly installed on the chassis; A rotating shaft (2), one end of which passes through the brake housing (1) and is fixed to the wheel; A brake body (3), which rotates synchronously with the rotating shaft (2); Among them, an outer circular groove (31) and an inner circular groove (32) are provided on the brake body (3). A first braking structure is provided inside the outer circular groove (31), and a second braking structure is provided inside the inner circular groove (32). The first braking structure includes a first brake pad (4) capable of applying a braking effect to the side surface of the outer circular groove (31), and the second braking structure includes a second brake pad (5) capable of applying a braking effect to the inner circular groove (32).

2. The electric chassis braking device according to claim 1, characterized in that, A connecting shell (6) is fixed on the brake housing (1). A first connecting member (13) and a second connecting member (14) are slidably installed inside the connecting shell (6). The number of the first brake pads (4) is two, and the two first brake pads (4) are respectively fixed on the first connecting member (13) and the second connecting member (14).

3. An electric chassis braking device according to claim 2, characterized in that, The first connecting member (13) and the second connecting member (14) are respectively connected to the two side walls of the connecting shell (6) through springs (10). A sliding shaft is fixed on one side of the first connecting member (13). An oil injection hole is provided on the side wall of the second connecting member (14). The sliding shaft is slidably inserted into the oil injection hole, and the oil injection hole is communicated with an external oil supply device through an oil pipe.

4. An electric chassis braking device according to claim 1, characterized in that, The second braking mechanism includes two second brake pads (5) rotatably installed on the brake housing (1), and the two second brake pads (5) are in contact with the inner wall of the inner circular groove (32) to generate frictional force.

5. An electric chassis braking device according to claim 4, characterized in that, The second braking mechanism includes a support ring (8) fixed on the brake housing (1). The support ring (8) is sleeved outside the rotating shaft (2). A plurality of abutting pins (12) are circumferentially installed inside the support ring (8), and the abutting pins (12) can abut against the inner side of the second brake pad (5).

6. An electric chassis braking device according to claim 5, characterized in that, An oil supply sliding hole adapted to the abutting pin (12) is provided inside the support ring (8), and the abutting pin (12) is slidably installed inside the oil supply sliding hole.

7. An electric chassis braking device according to claim 6, characterized in that, An oil supply channel (11) is provided inside the support ring (8), and the oil supply channel (11) is communicated with a plurality of oil supply sliding holes.

8. An electric chassis braking device according to claim 1, characterized in that, A hinge shaft (9) is installed on the brake housing (1). The ends of the two second brake pads (5) are both connected to the hinge shaft (9), and the ends of the two second brake pads (5) far from the hinge shaft (9) are connected through a spring (10).

9. The electric chassis braking device according to claim 1, characterized in that, A fixing disk (7) is installed at the end of the rotating shaft (2), and an installation hole for installing the wheel is provided on the fixing disk (7).

10. An electric chassis braking device according to claim 1, characterized in that, An elastic sheet is provided inside the second brake pad (5).

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