Mechanical braking structure for quick parking

Abstract

The utility model relates to a mechanical braking structure for quick parking, which belongs to the field of automobile braking and comprises a caliper body, friction plates are mounted on the caliper body, a brake disc is mounted between the friction plates, a ball screw rod is rotatably mounted in one side wall of the caliper body, and the ball screw rod is rotatably mounted in the other side wall of the caliper body. One end of the ball screw rod is in threaded connection with a ball screw threaded sleeve; a rotary power source is arranged on the outer side of the caliper body, the rotary power source is in power connection with the ball screw, a ratchet wheel is further fixedly connected to an output shaft of the rotary power source, a telescopic power source is arranged on one side of the ratchet wheel, a check block is fixedly connected to the telescopic power source, and the check block can stretch into teeth of the ratchet wheel. The dry-type braking device has the advantages that dry-type braking is formed by the ball screw rod and the ball screw thread sleeve, braking force can be accurately controlled, and the risk of hydraulic leakage is avoided; and a telescopic power source is adopted to directly drive the stop block for parking, so that quick response can be realized, and the parking time is shortened.

Description

Technical Field

[0001] The utility model relates to the field of automobile braking, in particular to a mechanical braking structure for rapid parking. Background Art

[0002] In the prior art, automobile braking is achieved by stepping on the brake pedal to generate pedal force, the pressure causes the brake fluid in the master cylinder to flow, and transmits the fluid pressure to the brake actuator to implement braking. Parking, on the other hand, uses a motor to drive a gear set, and through the torque amplification of the gear set and the force transmission mechanism inside the caliper, the parking brake torque is locked to achieve parking.

[0003] Its shortcomings are: 1. Braking relies on the brake fluid pressure, and the braking force cannot be accurately controlled. There is also a risk of brake fluid leakage; 2. The existing parking mechanism is complex, has a slow response speed, and is costly. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a mechanical brake structure capable of rapid parking.

[0005] The utility model solves the above technical problems with the following technical solutions: a mechanical brake structure for rapid parking, comprising a caliper body, friction plates are installed on the inner walls on both sides of the caliper body, a brake disc is installed between the two friction plates, a ball screw is rotatably installed in one side wall of the caliper body, a ball screw threaded sleeve is threadedly connected to one end of the ball screw screw facing the friction plate, and the ball screw threaded sleeve moves along the axis direction of the ball screw screw and squeezes the friction plate under the axial rotation of the ball screw screw;

[0006] A rotating power source is arranged on the outside of the caliper body, and the output shaft of the rotating power source is connected to the power of the ball screw. A ratchet is also fixedly connected to the output shaft of the rotating power source. A telescopic power source is arranged on one side of the ratchet. The telescopic end of the telescopic power source points to the ratchet and is fixedly connected to a block. The block can be extended into the ratchet teeth to limit the movement of the ratchet.

[0007] The beneficial effects of the utility model are: a ball screw screw and a ball screw threaded sleeve are used to form a dry brake, which can accurately control the braking force without the risk of hydraulic leakage; and a telescopic power source is used to directly drive the block for parking, which can respond quickly and shorten the time required for parking.

[0008] On the basis of the above technical solution, the present invention can also be improved as follows.

[0009] Furthermore, a push rod shaft is provided at one end of the ball screw away from the friction plate, the push rod shaft is spline-connected to the ball screw, and a pressure sensor is provided at one end of the push rod shaft away from the ball screw.

[0010] The beneficial effect of adopting the above further solution is that when the ball screw threaded sleeve is against the friction plate, the reaction force acts on the ball screw screw and the push rod shaft, and the pressure sensor determines the braking force based on the pressure.

[0011] Furthermore, a shell is fixedly connected to the outer side of the caliper body, a PCB board is arranged on the inner wall of the shell on the side facing the pressure sensor, and the sensing end of the pressure sensor is connected to the PCB board.

[0012] The beneficial effect of adopting the above further solution is that when the pressure sensor is squeezed, an electrical signal is transmitted to the PCB board in real time, and the response is rapid.

[0013] Furthermore, a magnetic ring is press-fitted on the output shaft of the rotary power source, and an induction chip cooperating with the magnetic ring is arranged on the PCB board.

[0014] The beneficial effect of adopting the above further solution is that the magnetic ring cooperates with the induction chip to monitor the rotation angle signal of the rotating power source, and is combined with the pressure sensor to realize redundant detection during braking.

[0015] Furthermore, a planet carrier is rotatably mounted in the housing, an outer sleeve is fixedly connected to one end of the planet carrier facing the ball screw, the outer sleeve is spline-connected to the ball screw, and the planet carrier and the outer sleeve are both sleeved on the outside of the push rod shaft;

[0016] A ring gear is also fixedly installed in the outer shell, and the ring gear is sleeved on the outside of the planetary carrier. A sun gear and a plurality of planetary gears are rotatably installed on the planetary carrier. The sun gear is sleeved on the outside of the push rod shaft, and one side of the plurality of planetary gears is meshed with the sun gear and the other side is meshed with the ring gear. The sun gear is power-connected to the rotating power source.

[0017] The beneficial effect of adopting the above further solution is that the power of the rotating power source is transmitted to the ball screw through the planetary gear train, and the planetary gear train can increase the torque to ensure the braking effect.

[0018] Furthermore, a shaft sleeve is rotatably installed in the outer shell, the shaft sleeve is sleeved on the outside of the push rod shaft, one end of the shaft sleeve extends into the planetary carrier and is fixedly connected to the sun gear, a second driven wheel is fixedly connected to the outer wall of the shaft sleeve, and the second driven wheel is connected to the rotating power source.

[0019] The beneficial effect of adopting the above further solution is: the transmission ratio is changed by the shaft sleeve and the second driven wheel, thereby increasing the torque.

[0020] Furthermore, the rotating power source is installed in the outer shell, a first driving wheel is fixedly connected to the output shaft of the rotating power source, a first rotating shaft is rotatably installed in the outer shell, a first driven wheel and a second driving wheel are fixedly connected to the first rotating shaft, the first driven wheel is meshed with the first driving wheel, and the second driving wheel is meshed with the second driven wheel.

[0021] The beneficial effect of adopting the above further solution is: the torque is increased by changing the transmission ratio by the first driven wheel and the second driving wheel.

[0022] Furthermore, a thrust bearing is installed on the outer wall of one end of the push rod shaft away from the ball screw.

[0023] The beneficial effect of adopting the above further solution is that when the push rod shaft slides axially, the thrust bearing bears the axial force.

[0024] Furthermore, a thrust gasket is provided between the push rod shaft and the pressure sensor.

[0025] The beneficial effect of adopting the above further solution is that the thrust gasket is used to protect the pressure sensor and the push rod shaft.

[0026] Furthermore, the telescopic power source is an electromagnetic push rod.

[0027] The beneficial effects of adopting the above further solution are: electromagnetic control, rapid power-on response, and rapid parking. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is an internal schematic diagram of the utility model.

[0029] Figure 2 It is an overall schematic diagram of the utility model.

[0030] Figure 3 It is a schematic diagram of the ratchet of the utility model.

[0031] Figure 4 It is a schematic diagram of the stopper of the utility model.

[0032] Figure 5 This is an exploded view of the planet carrier of the present utility model.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0034] 1. Caliper body; 2. Friction plate; 3. Brake disc; 4. Ball screw; 5. Ball screw threaded sleeve; 6. Rotational power source; 7. Ratchet; 8. Telescopic power source; 9. Stopper; 10. Push rod shaft; 11. Pressure sensor; 12. Housing; 13. PCB board; 14. Planet carrier; 15. Ring gear; 16. Sun gear; 17. Planet gear; 18. Bushing; 19. Second driven wheel; 20. First driving wheel; 21. First driven wheel; 22. Second driving wheel; 23. Thrust bearing; 24. Thrust gasket; 25. Outer bushing. DETAILED DESCRIPTION

[0035] The principles and features of the present invention are described below. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0036] Example 1

[0037] like Figure 1 to Figure 2 As shown, a mechanical brake structure for rapid parking includes a caliper body 1, friction plates 2 are installed on the inner walls of both sides of the caliper body 1, a brake disc 3 is installed between the two friction plates 2, a ball screw 4 is rotatably installed in one side wall of the caliper body 1, a ball screw thread sleeve 5 is threadedly connected to one end of the ball screw 4 facing the friction plate 2, and the ball screw thread sleeve 5 moves along the axial direction of the ball screw 4 and squeezes the friction plate 2 under the axial rotation of the ball screw 4;

[0038] A rotating power source 6 is arranged on the outside of the caliper body 1, and the output shaft of the rotating power source 6 is dynamically connected to the ball screw 4. A ratchet 7 is also fixedly connected to the output shaft of the rotating power source 6. A telescopic power source 8 is arranged on one side of the ratchet 7. The telescopic end of the telescopic power source 8 points to the ratchet 7 and is fixedly connected to a stopper 9. The stopper 9 can extend into the teeth of the ratchet 7 to limit the movement of the ratchet 7.

[0039] The beneficial effects of this embodiment are: the ball screw screw 4 and the ball screw threaded sleeve 5 are used to form a dry brake, which can accurately control the braking force without the risk of hydraulic leakage; and the telescopic power source 8 is used to directly drive the block 9 for parking, which can respond quickly and shorten the time required for parking.

[0040] Specifically, when braking is required, the rotating power source 6 drives the ball screw 4 to rotate, and the ball screw 4 drives the ball screw thread sleeve 5 to move linearly, and the ball screw thread sleeve 5 moves linearly against the friction plate 2, and then pushes the gap between the friction plate 2 and the brake disc 3 to reduce, and the two friction plates 2 clamp the brake disc 3 to achieve braking;

[0041] When parking is required, the telescopic power source 8 is extended, and the stopper 9 is inserted into the teeth of the ratchet wheel 7 to limit the movement of the ratchet wheel 7 to achieve parking, and can be quickly retracted when parking is completed;

[0042] The specific shape of the stopper 9 is not limited and is selected according to physical strength and service life. It can be a square or a shape corresponding to the concave and convex shape of the teeth of the ratchet wheel 7.

[0043] Example 2

[0044] like Figure 1 and Figure 5 As shown, preferably, on the basis of Example 1, a push rod shaft 10 is provided at one end of the ball screw 4 away from the friction plate 2, the push rod shaft 10 is spline-connected to the ball screw 4, and a pressure sensor 11 is provided at one end of the push rod shaft 10 away from the ball screw 4.

[0045] The beneficial effect of adopting the preferred scheme in the above embodiment is: when the ball screw threaded sleeve 5 presses against the friction plate 2, the ball screw screw 4 continues to rotate, but the ball screw threaded sleeve 5 cannot continue to move toward the friction plate 2, and the reaction force acts on the ball screw screw 4, the ball screw screw 4 acts on the push rod shaft 10, the push rod shaft 10 acts on the pressure sensor 11, and the pressure sensor 11 determines the braking force based on the pressure.

[0046] Specifically, the push rod shaft 10 is coaxial with the ball screw 4 and can rotate along with the ball screw 4 .

[0047] Example 3

[0048] like Figures 2 to 4 As shown, preferably, on the basis of embodiments 1-2, a shell 12 is fixedly connected to the outer side of the caliper body 1, a PCB board 13 is provided on the inner wall of the shell 12 facing the pressure sensor 11, and the sensing end of the pressure sensor 11 is connected to the PCB board 13.

[0049] The beneficial effect of adopting the preferred solution in the above embodiment is that when the pressure sensor 11 is squeezed, an electrical signal is transmitted to the PCB board 13 in real time, and the response is rapid.

[0050] Specifically, the pressure sensor 11 is fixedly installed in the cavity of the housing 12, the bottom of the pressure sensor 11 contacts the push rod shaft 10, and the sensing end of the pressure sensor 11 contacts the PCB board 13. When the ball screw 4 drives the push rod shaft 10 to move upward, the push rod shaft 10 pushes the pressure sensor 11, and the sensing end of the pressure sensor 11 is squeezed by the PCB board 13 to obtain pressure value feedback, and transmits electrical signals to the PCB board 13 in real time, with rapid response;

[0051] The signal transmission between the sensing end of the pressure sensor 11 and the PCB board 13 may be a wired connection or a wireless connection.

[0052] Example 4

[0053] like Figure 1 As shown, preferably, on the basis of embodiments 1-3, a magnetic ring is pressed onto the output shaft of the rotary power source 6, and an induction chip cooperating with the magnetic ring is provided on the PCB board 13.

[0054] The beneficial effect of adopting the preferred solution in the above embodiment is that the magnetic ring cooperates with the induction chip to monitor the rotation angle signal of the rotating power source 6, and is combined with the pressure sensor 11 to realize redundant detection during braking.

[0055] Specifically, the rotating power source 6 is a motor, and the magnetic ring cooperates with the induction chip to accurately identify the rotation angle signal of the motor by using the principle of magnetic encoder;

[0056] When the rotary power source 6 drives the ball screw threaded sleeve 5 to press against the friction plate 2, the pressure sensor 11 identifies the reaction force of the ball screw threaded sleeve 5, and the magnetic ring and the sensing chip identify the rotation angle of the rotary power source 6, forming a double redundant detection.

[0057] Example 5

[0058] like Figure 1 and Figure 5 As shown, preferably, on the basis of embodiments 1-4, a planet carrier 14 is rotatably installed in the housing 12, an outer sleeve 25 is fixedly connected to one end of the planet carrier 14 facing the ball screw 4, the outer sleeve 25 is spline-connected to the ball screw 4, and the planet carrier 14 and the outer sleeve 25 are both sleeved on the outside of the push rod shaft 10;

[0059] A ring gear 15 is also fixedly installed in the outer shell 12, and the ring gear 15 is sleeved on the outside of the planet carrier 14. A sun gear 16 and a plurality of planetary gears 17 are rotatably installed on the planet carrier 14. The sun gear 16 is sleeved on the outside of the push rod shaft 10, and one side of the plurality of planetary gears 17 is meshed with the sun gear 16 and the other side is meshed with the ring gear 15. The sun gear 16 is power-connected to the rotating power source 6.

[0060] The beneficial effect of adopting the preferred solution in the above embodiment is that the power of the rotating power source 6 is transmitted to the ball screw 4 through the planetary gear train, and the planetary gear train can increase the torque to ensure the braking effect.

[0061] Specifically, the planet carrier 14, the outer sleeve 25 and the sun gear 16 are all sleeved outside the push rod shaft 10 and can rotate, but do not transmit power to the push rod shaft 10, and the ring gear 15 is fixed;

[0062] When the rotating power source 6 drives the sun gear 16 to rotate, the sun gear 16 drives the planetary gear 17 to rotate. The planetary gear 17 rotates in the ring gear 15 while revolving. The planetary gear 17 also drives the planetary carrier 14 to move together. The outer shaft sleeve 25 at the bottom of the planetary carrier 14 drives the ball screw 4 to rotate, thereby driving the ball screw thread sleeve 5 to descend.

[0063] The outer sleeve 25 is inserted into the ball screw 4 and connected by a spline. The length of the spline groove where the outer sleeve 25 is located is longer than the length of the outer sleeve 25 itself. When the ball screw 4 moves upward under the reaction force, the outer sleeve 25 and the spline groove can produce relative sliding without acting on the planetary carrier 14, thereby preventing the planetary gear system from being subjected to axial force.

[0064] Example 6

[0065] like Figures 3 to 5 As shown, preferably, on the basis of embodiments 1-5, a shaft sleeve 18 is rotatably installed in the outer shell 12, and the shaft sleeve 18 is sleeved on the outside of the push rod shaft 10, one end of the shaft sleeve 18 extends into the planetary carrier 14 and is fixedly connected to the sun gear 16, and a second driven wheel 19 is fixedly connected to the outer wall of the shaft sleeve 18, and the second driven wheel 19 is connected to the rotating power source 6.

[0066] The beneficial effect of adopting the preferred solution in the above embodiment is: the transmission ratio is changed by the shaft sleeve 18 and the second driven wheel 19 to increase the torque.

[0067] Specifically, the shaft sleeve 18 is sleeved on the outside of the push rod shaft 10 and can rotate, but does not transmit power to the push rod shaft 10;

[0068] The rotary power source 6 drives the second driven wheel 19 , the second driven wheel 19 drives the sun wheel 16 , and the sun wheel 16 drives the planetary wheels 17 to rotate.

[0069] Example 7

[0070] like Figures 3 to 5 As shown, preferably, on the basis of Examples 1-6, the rotating power source 6 is installed in the outer shell 12, a first driving wheel 20 is fixedly connected to the output shaft of the rotating power source 6, a first rotating shaft is rotatably installed in the outer shell 12, a first driven wheel 21 and a second driving wheel 22 are fixedly connected to the first rotating shaft, the first driven wheel 21 is meshed with the first driving wheel 20, and the second driving wheel 22 is meshed with the second driven wheel 19.

[0071] The beneficial effect of adopting the preferred solution in the above embodiment is: the torque is increased by changing the transmission ratio through the first driven wheel 21 and the second driving wheel 22.

[0072] Specifically, the rotary power source 6 drives the first driving wheel 20 , the first driving wheel 20 drives the first driven wheel 21 and the second driving wheel 22 , and the second driving wheel 22 drives the second driven wheel 19 to rotate.

[0073] Example 8

[0074] like Figure 1 As shown, preferably, on the basis of Embodiments 1-7, a thrust bearing 23 is installed on the outer wall of one end of the push rod shaft 10 away from the ball screw 4.

[0075] The beneficial effect of adopting the preferred solution in the above embodiment is that when the push rod shaft 10 slides axially, the thrust bearing 23 bears the axial force.

[0076] Example 9

[0077] like Figure 1 As shown, preferably, on the basis of embodiments 1-8, a thrust gasket 24 is provided between the push rod shaft 10 and the pressure sensor 11 .

[0078] The beneficial effect of adopting the preferred solution in the above embodiment is that the thrust gasket 24 is used to protect the pressure sensor 11 and the push rod shaft 10 .

[0079] Example 10

[0080] like Figure 1 As shown, preferably, on the basis of embodiments 1-9, the telescopic power source 8 is an electromagnetic push rod.

[0081] The beneficial effects of adopting the above further solution are: electromagnetic control, rapid power-on response, and rapid parking.

[0082] The specific workflow is:

[0083] Combination Figure 1 As shown, when braking is needed, the rotating power source 6 drives the first driving wheel 20, the first driving wheel 20 drives the first driven wheel 21 and the second driving wheel 22, the second driving wheel 22 drives the second driven wheel 19 to rotate, the second driven wheel 19 drives the sun wheel 16, the sun wheel 16 drives the planetary wheel 17 to rotate, the planetary wheel 17 rotates in the ring gear 15 while revolving, the planetary wheel 17 also drives the planetary carrier 14 to move together, the outer shaft sleeve 25 at the bottom of the planetary carrier 14 drives the ball screw 4 to rotate, and then drives the ball screw thread sleeve 5 to descend, the ball screw thread sleeve 5 moves linearly against the friction plate 2, and then pushes the gap between the friction plate 2 and the brake disc 3 to reduce, and the two friction plates 2 clamp the brake disc 3 to achieve braking;

[0084] The ball screw 4 continues to rotate, but the ball screw sleeve 5 cannot continue to move downward, and the reaction force acts on the ball screw 4, the ball screw 4 acts on the push rod shaft 10, and the push rod shaft 10 acts on the pressure sensor 11. The sensing end of the pressure sensor 11 is squeezed by the PCB board 13 to obtain pressure value feedback, and transmits electrical signals to the PCB board 13 in real time;

[0085] When parking is required, the telescopic power source 8 is extended, and the stopper 9 is inserted into the teeth of the ratchet wheel 7 to limit the movement of the ratchet wheel 7, thereby achieving parking. When parking is completed, the telescopic power source 8 can be quickly retracted, and the response speed is fast.

[0086] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0087] In addition, 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 at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0088] 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, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0089] In the present utility model, 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.

[0090] 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 utility model. 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, without contradiction.

[0091] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A mechanical brake structure for rapid parking, characterized in that: The invention comprises a caliper body (1), friction plates (2) are installed on the inner walls of both sides of the caliper body (1), a brake disc (3) is installed between the two friction plates (2), a ball screw (4) is rotatably installed in one side wall of the caliper body (1), a ball screw thread sleeve (5) is threadedly connected to one end of the ball screw thread sleeve (4) facing the friction plate (2), and the ball screw thread sleeve (5) moves along the axial direction of the ball screw thread sleeve (4) and squeezes the friction plate (2) under the axial rotation of the ball screw thread sleeve (4); A rotating power source (6) is arranged on the outside of the caliper body (1), the output shaft of the rotating power source (6) is connected to the ball screw (4) in power, the output shaft of the rotating power source (6) is also fixedly connected to a ratchet (7), a telescopic power source (8) is arranged on one side of the ratchet (7), the telescopic end of the telescopic power source (8) points to the ratchet (7) and is fixedly connected to a stopper (9), and the stopper (9) can extend into the teeth of the ratchet (7) to limit the movement of the ratchet (7).

2. A mechanical brake structure for rapid parking according to claim 1, characterized in that: A push rod shaft (10) is arranged at one end of the ball screw (4) away from the friction plate (2), the push rod shaft (10) is spline-connected to the ball screw (4), and a pressure sensor (11) is arranged at one end of the push rod shaft (10) away from the ball screw (4).

3. A mechanical brake structure for rapid parking according to claim 2, characterized in that: The outer side of the caliper body (1) is also fixedly connected to a housing (12); a PCB board (13) is provided on an inner wall of the housing (12) facing the pressure sensor (11); and a sensing end of the pressure sensor (11) is connected to the PCB board (13).

4. A mechanical brake structure for rapid parking according to claim 3, characterized in that: A magnetic ring is press-fitted onto the output shaft of the rotary power source (6), and an induction chip cooperating with the magnetic ring is arranged on the PCB board (13).

5. The mechanical brake structure for rapid parking according to claim 3, characterized in that: A planet carrier (14) is rotatably mounted in the housing (12); an outer sleeve (25) is fixedly connected to one end of the planet carrier (14) facing the ball screw (4); the outer sleeve (25) is spline-connected to the ball screw (4); and the planet carrier (14) and the outer sleeve (25) are both sleeved on the outside of the push rod shaft (10); A ring gear (15) is also fixedly installed in the housing (12), and the ring gear (15) is sleeved on the outside of the planet carrier (14). A sun gear (16) and a plurality of planetary gears (17) are rotatably installed on the planet carrier (14). The sun gear (16) is sleeved on the outside of the push rod shaft (10), and one side of the plurality of planetary gears (17) is meshed with the sun gear (16) and the other side is meshed with the ring gear (15). The sun gear (16) is connected to the rotating power source (6).

6. A mechanical brake structure for rapid parking according to claim 5, characterized in that: A shaft sleeve (18) is also rotatably mounted in the housing (12). The shaft sleeve (18) is sleeved on the outside of the push rod shaft (10). One end of the shaft sleeve (18) extends into the planetary carrier (14) and is fixedly connected to the sun gear (16). A second driven wheel (19) is fixedly connected to the outer wall of the shaft sleeve (18). The second driven wheel (19) is connected to the rotating power source (6).

7. A mechanical brake structure for rapid parking according to claim 6, characterized in that: The rotary power source (6) is installed in the housing (12); a first driving wheel (20) is fixedly connected to the output shaft of the rotary power source (6); a first rotating shaft is rotatably installed in the housing (12); a first driven wheel (21) and a second driving wheel (22) are fixedly connected to the first rotating shaft; the first driven wheel (21) is meshed with the first driving wheel (20); and the second driving wheel (22) is meshed with the second driven wheel (19).

8. The mechanical brake structure for rapid parking according to claim 2, characterized in that: A thrust bearing (23) is installed on the outer wall of one end of the push rod shaft (10) away from the ball screw (4).

9. A mechanical brake structure for rapid parking according to claim 8, characterized in that: A thrust washer (24) is provided between the push rod shaft (10) and the pressure sensor (11).

10. A mechanical brake structure for rapid parking according to any one of claims 1 to 9, characterized in that: The telescopic power source (8) is an electromagnetic push rod.

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