A jacking brake system and pool trailer

Abstract

The application relates to a jacking brake system and a pool trailer and relates to the field of vehicle braking. Brake rails are arranged between running rails, the top of the starting end of the brake rails is provided with a first brake slope which is inclined downward along the direction close to the starting end, the jacking brake comprises a driving assembly connected with a balance beam of the pool trailer, one end of the driving assembly is provided with a brake base and is used for driving the brake base to move along the direction close to or away from the brake rail, so that the brake base can slide along the first brake slope to the brake rail, and the driving assembly is used for gradually jacking up the balance beam in the sliding process, so that the wheels of the pool trailer at the corresponding position are separated from the running rail. The jacking brake system provided by the application can jack up the balance beam when the pool trailer is out of control, so that the wheels of the pool trailer are gradually separated from the running rail, and then the pool trailer is braked by utilizing the friction between the brake base and the brake rail. The whole process is stable in braking, and the safety and reliability are high.

Description

Technical Field

[0001] This application relates to the field of vehicle braking, and in particular to a lifting braking system and a water tank trailer. Background Technology

[0002] Currently, ship tank trailers typically travel back and forth on tracks above the test tank. Generally, the operating speed of the tank trailer determines the experimental speed of the ship model; therefore, high speed is currently a mandatory requirement for tank trailers. For ship model experiments, once the speed reaches a certain level, it is necessary to ensure safety under extreme conditions. To ensure that the tank trailer can operate at high speeds during experiments and maintain stopping performance in emergency situations of speed loss, braking devices are usually installed on the trailer wheels.

[0003] In related technologies, braking systems generally include brake discs and brake calipers. The brake calipers clamp the brake discs to generate braking force. When the brakes are applied, the brake calipers clamp the brake discs to decelerate the vehicle until it comes to a stop. However, during the process of the brake calipers clamping the brake discs, the friction between the friction pads and the brake discs generates a large amount of heat instantaneously. This raises the temperature of the friction pads and brake discs, reducing the coefficient of friction between them and the brake disc surface. Consequently, the braking force generated decreases, reducing the reliability of the braking system and even causing it to fail. In the event of a failure, this poses a significant safety hazard. Summary of the Invention

[0004] This application provides a lifting braking system and a water tank trailer to solve the problem in the related art where the braking device of the water tank trailer is prone to failure during emergency braking, resulting in the inability to decelerate and stop, which causes great safety hazards.

[0005] In a first aspect, a lifting braking system is provided, comprising:

[0006] A braking track is provided between the running tracks along a direction parallel to the running tracks. A first braking ramp is provided at the top of the starting end of the braking track, and the first braking ramp slopes downward in the direction close to the starting end.

[0007] At least two spaced-apart lifting brakes, each lifting brake including a drive assembly, one end of which is connected to the balance beam of the water tank trailer, and the other end of which is provided with a brake base; wherein...

[0008] The drive assembly is used to drive the brake base to move in a direction close to or away from the brake track. The brake base can slide along the first brake ramp to the brake track and is used to gradually lift the balance beam through the drive assembly during the sliding process so that the wheels of the corresponding position of the pool trailer are separated from the running track.

[0009] In some embodiments, the braking rail includes a first braking guide rail and a second braking guide rail, the first braking guide rail including a first braking surface, the second braking guide rail including a second braking surface, and a docking section provided at one end of the second braking surface;

[0010] One end of the first braking surface is provided with the first braking ramp, and the other end is connected to and flush with the docking section. Both sides of the docking section are provided with second braking ramps, and the tilt direction and tilt angle of the second braking ramps are the same as those of the first braking ramp.

[0011] In some embodiments, the width of the second braking surface is greater than the width of the first braking surface, and the width of the mating segment is not greater than the width of the first braking surface.

[0012] In some embodiments, the second braking surface has a groove in the middle that extends along its length, and there is a buffer section between the groove and the mating section.

[0013] In some embodiments, the heights of the first braking ramp and the second braking ramp are both in the range of 3 to 5 mm.

[0014] In some embodiments, one end of the brake base is rotatably connected to the balance beam, the brake base is slidably connected to the drive assembly, and the brake base is used to rotate in a direction close to or away from the brake track under the drive of the drive assembly, so that the brake base can slide along the first brake ramp to the brake track.

[0015] In some embodiments, the brake base is provided with at least one connecting arm, the connecting arm is inclined upward in a direction away from the brake base, and the top end of the connecting arm is hinged to a connecting seat for connecting to the balance beam;

[0016] The brake base is provided with at least one connecting plate, and the connecting plate is provided with a sliding groove;

[0017] The drive assembly includes a drive rod, the bottom end of which is slidably fixed to the slide groove.

[0018] In some embodiments, at least one of the lifting brakes is provided at the front end of the pool trailer, and at least one of the lifting brakes is provided at the rear end of the pool trailer.

[0019] The width of the brake base for the lifting brake located at the front end of the water tank trailer is greater than the width of the brake base for the lifting brake located at the rear end of the water tank trailer. The brake base with the smaller width has at least one first brake pad at its bottom, and the brake base with the larger width has two spaced-apart second brake pads at its bottom.

[0020] In some embodiments, the second brake pad has a second wedge-shaped surface at one end near the starting point of the brake track, and the first brake pad has a first wedge-shaped surface at one end near the starting point of the brake track. Both the first and second wedge-shaped surfaces are matched with the first brake ramp.

[0021] Secondly, a pool trailer is provided, comprising:

[0022] Vehicle body;

[0023] The above-mentioned lifting and braking systems are arranged symmetrically along the width direction of the vehicle body in two sets.

[0024] The beneficial effects of the technical solution provided in this application include:

[0025] This application provides a lifting braking system. Because a braking track is provided between the running tracks, and a first braking ramp inclined downwards along the direction close to the starting point of the braking track is provided at the top, the lifting brake includes a drive assembly connected to the balance beam of the water tank trailer. One end of the drive assembly is provided with a brake base, which is used to drive the brake base to move along the direction close to or away from the braking track. This allows the brake base to slide along the first braking ramp onto the braking track. During the sliding process, the drive assembly gradually lifts the balance beam, causing the wheels of the water tank trailer at the corresponding position to separate from the running track. Therefore, this lifting braking system can lower the brake base and use the interaction between the brake base and the braking track to lift the balance beam, gradually separating the wheels of the water tank trailer from the running track. Then, the friction between the brake base and the braking track brakes the water tank trailer. The entire process is smooth, with good braking effect and high safety and reliability. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 A schematic diagram of the lifting braking system provided in this application when it is installed on the balance beam;

[0028] Figure 2 A schematic diagram of the structure of the lifting brake device located at the front end of the vehicle body for the lifting braking system provided in the embodiments of this application;

[0029] Figure 3 A schematic diagram of the structure of the lifting brake device located at the rear end of the vehicle body for the lifting braking system provided in the embodiments of this application;

[0030] Figure 4 A schematic diagram of the structure at the joint between the first and second brake guide rails of the lifting braking system provided in this application embodiment;

[0031] Figure 5 A schematic diagram of the structure of one end of the first braking guide rail of the lifting braking system provided in the embodiment of this application, which has a first braking ramp;

[0032] Figure 6 A partial side view of the lifting brake located at the front end of the vehicle body, which is part of the lifting braking system provided in the embodiments of this application;

[0033] Figure 7 This is a partial side view of the lifting brake located at the rear of the vehicle body, which is part of the lifting braking system provided in the embodiments of this application.

[0034] In the diagram: 1-Brake rail, 10-First brake ramp, 11-First brake guide rail, 110-First brake surface, 12-Second brake guide rail, 120-Second brake surface, 121-Dating section, 122-Second brake ramp, 123-Groove, 124-Buffer section, 2-Lifting brake, 20-Drive assembly, 200-Drive rod, 21-Brake base, 210-Connecting arm, 211-Connecting plate, 212-Slide groove, 213-Second brake pad, 214-First brake pad, 215-First wedge surface, 216-Second wedge surface, 217-Fixing plate, 218-Drive motor, 219-Expansion section, 22-Connecting seat, 3-Running rail, 4-Balance beam, 5-Guide wheel. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] This application provides a lifting braking system that can solve the problem in related technologies where the braking device of a water tank trailer is prone to failure during emergency braking, resulting in the inability to decelerate and stop, thus causing a great safety hazard.

[0037] See Figure 1 As shown, this lifting and braking system mainly includes a braking rail 1 and at least two lifting brakes 2 spaced apart. The braking rail 1 is arranged between the running rails 3 in a direction parallel to the running rails 3. The wheels of the water tank trailer slide on the running rails 3 for the operation of the water tank trailer. The length of the braking rail 1 is less than that of the running rails 3 and it is located between the two running rails 3. The distance between the braking rail 1 and the running rail 3 on the same side that is closer to it is mainly determined by the position of the lifting brake 2 at the bottom of the water tank trailer. The braking rail 1 includes a starting end and an ending end. The starting end is closer to the direction of the oncoming vehicle. The top of the starting end of the braking rail 1 is provided with a first braking ramp 10. The first braking ramp 10 is inclined downward in the direction close to the starting end. Each lifting brake 2 includes a drive assembly 20. One end of the drive assembly 20 is connected to the balance beam 4 of the water tank trailer to be fixed in the empty position at the bottom of the water tank trailer. The other end is provided with a brake base 21.

[0038] Among them, see Figure 2 and Figure 3As shown, the drive assembly 20 is used to drive the brake base 21 to move in a direction closer to or away from the brake rail 1. When the water tank trailer is running normally along the running track 3, in order to ensure the normal operation of the water tank trailer, the drive assembly 20 will drive the brake base 21 to move in a direction away from the brake rail 1 to retract the brake base 21 and avoid contact during operation that could affect the vehicle. When the water tank trailer goes out of control, the drive assembly 20 will drive the brake base 21 to move in a direction closer to the brake rail 1 until it moves to a preset height. This preset height is slightly higher than the horizontal plane of the lower end of the first brake ramp 10, so that when the water tank trailer moves to the brake base 21 at the front end and contacts the first brake ramp 10, the brake base 21 can slide along the first brake ramp 10 to the brake rail 1 under the guidance of the first brake ramp 10. Since the top surface of the brake rail 1 is higher than the original horizontal plane of the brake base 21, the sliding... During the process, as the brake base 21 gradually slides upward along the first brake ramp 10, the length of the drive assembly 20 is fixed at this time. Therefore, the drive assembly 20 can gradually lift the balance beam 4 so that the front end of the entire water tank trailer is lifted upward, thereby separating the wheels that were originally slid on the running track 3 from the running track 3. Since the water tank trailer has a high speed and its own inertia is relatively large, even if the front wheels are lifted, the water tank trailer will continue to slide forward. As more and more brake base plates slide along the first brake ramp 10 to the brake track 1, more and more wheels on the water tank trailer separate from the running track 3. Finally, all the wheels on the water tank trailer are separated from the running track 3. The guide wheel 5 of the water tank trailer is still in contact with the running track 3. The brake base plate slides along the brake track 1 under the guidance of the guide wheel 5, and the water tank trailer is smoothly braked and stopped under the action of friction. The whole process is smooth braking, with good braking effect and high safety and reliability.

[0039] Further, see Figure 4 and Figure 5 As shown, the braking track 1 may include a first braking guide rail 11 and a second braking guide rail 12. The first braking guide rail 11 is located at the starting end, and the second braking guide rail 12 is located at the ending end and is connected to the first braking guide rail 11 at one end. The first braking guide rail 11 includes a first braking surface 110, and the second braking guide rail 12 includes a second braking surface 120. One end of the second braking surface 120 is provided with a docking section 121. The first braking surface 110 has a first braking ramp 10 at one end and is flush with the docking section 121 at the other end. Both sides of the docking section 121 are provided with second braking ramps 122, and the inclination direction and inclination angle of the second braking ramps 122 are the same as those of the first braking ramps 10.

[0040] Specifically, since the brake track 1 itself has a certain length, it is formed by splicing the first brake guide rail 11 and the second brake guide rail 12. Since brake bases 21 slide on both the first brake surface 110 and the second brake surface 120, and the bottom of the brake base 21 is flat, the alignment accuracy at the splicing point is very important; otherwise, braking failure may occur, or even a sudden impact could lead to a more serious safety accident. When aligning the first brake guide rail 11 and the second brake guide rail 12, due to their inherent width, a common problem is that the brake surfaces are not horizontal. When the top brake surface is not horizontal, one end will inevitably tilt upwards, hindering the smooth sliding of the brake base 21. To reduce the precision requirements of the installation and ensure that the end does not tilt upwards, a second brake ramp 122 is provided at the end of the mating section 121 of the second brake surface 120 closest to the first brake surface 110. The inclination direction and inclination angle of the second brake ramp 122... The length of the second braking ramp 122 is the same as that of the first braking ramp 10. The length of the second braking ramp 122 can be the same as that of the first braking ramp 10 or different. In this embodiment, the length of the second braking ramp 122 is the same as that of the first braking ramp 10. Since the theoretical horizontal height of the second braking surface 120 is the same as that of the first braking surface 110, the height of the end of the second braking ramp 122 near the first braking surface 110 is the same as the lowest horizontal height of the first braking ramp 10. This ensures that the brake base 21 can pass smoothly through the docking section 121, ensuring the stability and safety of braking.

[0041] Further, see Figure 4 and Figure 5 As shown, the width of the second braking surface 120 is greater than the width of the first braking surface 110, and the width of the mating section 121 is not greater than the width of the first braking surface 110.

[0042] Specifically, when the wheels of the pool trailer are separated from the running track 3, the braking force is mainly provided by the friction between the brake base 21 and the brake track 1. Therefore, the larger the bottom area of ​​the brake base 21, the greater the braking force provided. However, if the bottom area of ​​the brake base 21 is large, the braking force may suddenly increase in an instant, which may also cause a safety accident similar to a rollover. In order to ensure smooth braking, the width of the first brake surface 110 cannot be too large. If the width of the first brake surface 110 is too narrow, it may also cause instability of the pool trailer during braking and sliding. In order to ensure braking safety, the width of the second brake surface 120 is greater than the width of the first brake surface 110, that is, the second brake guide rail 12 is wider than the first brake guide rail 11. The brake base 21 will first contact the first brake guide rail 11 and then contact the second brake track 1, so that the front end of the pool trailer has sufficient support stability when sliding. In addition, the width of the docking section 121 is not greater than the width of the first braking surface 110, so as to minimize the accuracy requirements during installation and docking, reduce the difficulty of installation, and speed up the installation efficiency.

[0043] Further, see Figure 1 and Figure 4 As shown, the second braking surface 120 has a groove 123 in the middle that extends along its length, and there is a buffer section 124 between the groove 123 and the docking section 121.

[0044] Specifically, since the braking force will inevitably increase as the width of the second braking surface 120 increases, in order to prevent the braking force from being too large and causing sudden braking, which may lead to unstable braking process and safety accidents, a groove 123 is provided in the middle of the second braking surface 120 along its length direction. This groove 123 can ensure that the front end of the water tank trailer has stable support, and can also ensure that the braking force of the second braking surface 120 is equivalent to that of the first braking surface 110, without too much sudden change, thus ensuring smooth braking. In addition, there is a buffer section 124 between the groove 123 and the docking section 121. The purpose of the buffer section 124 is as follows: Generally, when braking ends, the brake base 21 located at the front end of the water tank trailer will stop on the second brake surface 120, while the brake base 21 located at the rear end of the water tank trailer will stop on the first brake surface 110. Therefore, the lengths of the first brake guide rail 11 and the second brake guide rail 12 have been calculated in advance. The widths of the brake bases 21 located at the front and rear ends of the water tank trailer can be the same, or the width of the brake base 21 located at the front end can be greater than that of the brake base 21 located at the rear end. Therefore, when the width of the brake base 21 located at the front end is greater than that of the brake base 21 located at the rear end, the brake base 21 located at the rear end may need to slide onto the second brake surface 120 to achieve braking. Therefore, the buffer section 124 is provided between the groove 123 and the docking section 121 so that even if the brake base 21 located at the rear end slides onto the second brake surface 120, it can still slide smoothly.

[0045] Further, see Figure 4 and Figure 5 As shown, the heights of the first braking ramp 10 and the second braking ramp 122 are both within the range of 3-5 mm. Specifically, since the heights of the first braking ramp 10 and the second braking ramp 122 are within the same range, and the wheels are just resting and sliding on the running track 3 when not braking, it is only necessary to raise the entire water tank trailer by about 3-5 mm to achieve smooth separation of the wheels from the running track 3. However, excessive lifting may cause the guide wheel 5 to detach from the running track 3. Once the guide wheel 5 detaches from the running track 3, the water tank trailer will lose its lateral restraints, leading to a derailment and overturning accident.

[0046] Further, see Figure 2 and Figure 3 As shown, one end of the brake base 21 is rotatably connected to the balance beam 4, and the brake base 21 is slidably connected to the drive assembly 20. The brake base 21 is used to rotate in the direction of approaching or moving away from the brake track 1 under the drive of the drive assembly 20, so that the brake base 21 can slide along the first brake ramp 10 to the brake track 1.

[0047] Specifically, since the bottom surface of the brake base 21 needs to slide on the brake rail 1, the brake base 21 needs to be as horizontal as possible after it is lowered. Therefore, the brake base 21 is rotatably connected to the balance beam 4 and slidably connected to the drive assembly 20. When the drive assembly 20 drives the brake base 21 to rotate and flatten, after the brake base 21 reaches a horizontal state, even if the drive assembly 20 continues to drive, the brake base 21 will no longer rotate due to the rotation limit of the balance beam 4. This reduces the accuracy requirements for adjusting the height of the brake base 21 when braking is required. In addition, when the brake base 21 contacts the brake rail 1, it will be impacted by the first braking ramp 10. The rotatable connection between the brake base 21 and the balance beam 4 also ensures the structural stability of the brake base 21.

[0048] Further, see Figure 2 and Figure 3 As shown, the brake base 21 is provided with at least one connecting arm 210. The connecting arm 210 is inclined upward in a direction away from the brake base 21. The top end of the connecting arm 210 is hinged to a connecting seat 22, which is used to fix it to the balance beam 4. The brake base 21 is provided with at least one connecting plate 211. The connecting plate 211 is provided with a groove 212. Here, the connecting arm 210 can be integrally formed with the connecting plate 211, or it can be connected to the connecting plate 211 by other suitable connection methods such as welding. The groove 212 can be a slot provided on the connecting plate 211, or it can be a bottom groove. In this embodiment, the closed groove 123 is preferably a slot on the connecting plate 211. The connecting arm 210 is integrally formed with the connecting plate 211. The drive assembly 20 includes a drive rod 200. The bottom end of the drive rod 200 is slidably fixed to the groove 212. Both sides of the drive rod 200 are provided with enlarged portions 219 extending out of the groove 212. The top end of the drive rod 200 is provided with a fixing plate 217, which is connected to the balance beam 4. A drive motor 218 is provided on one side of the fixing plate 217, which is used to drive the drive rod 200 to extend and retract. In addition, the end of the groove 212 away from the connecting plate 211 is slightly larger than the other parts and is arc-shaped to facilitate rotation when the brake base 21 is retracted.

[0049] Further, see Figure 1As shown, at least one lifting brake 2 is used at the front end of the water tank trailer and at least one lifting brake 2 is used at the rear end of the water tank trailer to ensure the stability of the water tank trailer when braking. Correspondingly, the width of the brake base 21 of the lifting brake 2 used at the front end of the water tank trailer is greater than the width of the brake base 21 of the lifting brake 2 used at the rear end of the water tank trailer, so as to slide and match with the second brake surface 120. The bottom of the brake base 21 with the larger width is provided with two spaced second brake pads 213, which respectively cooperate with the second brake surfaces 120 located on both sides of the groove 123. The bottom of the brake base 21 with the smaller width is provided with at least one first brake pad 214. Preferably, the number of first brake pads 214 is one, and its width is the same as the width of the first brake surface 110.

[0050] Further, see Figure 6 and Figure 7 As shown, the second brake pad 213 has a second wedge-shaped surface 216 at one end near the starting point of the brake track 1, and the first brake pad 214 has a first wedge-shaped surface 215 at one end near the starting point of the brake track 1. Both the first wedge-shaped surface 215 and the second wedge-shaped surface 216 are matched with the first brake ramp 10.

[0051] Specifically, since both the second brake pad 213 and the first brake pad 214 have a certain thickness, the second brake pad 213 has a second wedge-shaped surface 216 that matches the first brake ramp 10 at one end near the starting point of the brake track 1, and the first brake pad 214 has a first wedge-shaped surface 215 that matches the first brake ramp 10 at one end near the starting point of the brake track 1, so as to ensure that the brake base plate can smoothly slide onto the first brake ramp 10 and ensure the stability of the sliding process.

[0052] This application also provides a water tank trailer, which includes a vehicle body and two sets of the above-mentioned lifting and braking systems symmetrically arranged along the width direction of the vehicle body. In use, the lifting and braking systems need to be used in pairs and symmetrically on the vehicle body. In addition, the balance beam 4 of the vehicle body is provided with a plurality of spaced guide wheels 5. The guide wheels 5 are rolled and clamped on the top of the running track 3, and the overlap dimension between them and the running track 3 in the height direction is greater than the maximum height of the first braking ramp 10, so as to ensure that the vehicle body is guided to slide during braking and to ensure the safety of the braking process.

[0053] In the description of this application, it should be noted that the terms "upper," "lower," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0054] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0055] The above description is merely a specific embodiment of this application, enabling those skilled in the art to understand or implement this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features claimed herein.

Claims

1. A lifting braking system, characterized in that, It includes: Braking track (1), which is arranged between the running tracks (3) in the direction parallel to the running track (3), and a first braking ramp (10) is provided at the top of the starting end of the braking track (1), and the first braking ramp (10) is inclined downward in the direction close to the starting end; At least two spaced-apart lifting brakes (2), each of which includes a drive assembly (20), one end of which is connected to the balance beam (4) of the water tank trailer, and the other end of which is provided with a brake base (21); wherein, The drive assembly (20) is used to drive the brake base (21) to move in a direction close to or away from the brake track (1). The brake base (21) can slide along the first brake ramp (10) to the brake track (1) and is used to gradually lift the balance beam (4) through the drive assembly (20) during the sliding process so that the wheels of the corresponding position of the pool trailer are separated from the running track (3). The braking rail (1) includes a first braking guide rail (11) and a second braking guide rail (12). The first braking guide rail (11) includes a first braking surface (110), and the second braking guide rail (12) includes a second braking surface (120). One end of the second braking surface (120) is provided with a docking section (121). One end of the first braking surface (110) is provided with the first braking ramp (10), and the other end is connected to and flush with the docking section (121). Both sides of the docking section (121) are provided with the second braking ramp (122). The tilt direction and tilt angle of the second braking ramp (122) are the same as those of the first braking ramp (10), and the length of the second braking ramp (122) is the same as that of the first braking ramp (10).

2. The lifting braking system as described in claim 1, characterized in that: The width of the second braking surface (120) is greater than the width of the first braking surface (110), and the width of the mating section (121) is not greater than the width of the first braking surface (110).

3. The lifting braking system as described in claim 1, characterized in that: The second braking surface (120) has a groove (123) in the middle that extends along its length, and there is a buffer section (124) between the groove (123) and the docking section (121).

4. A lifting braking system as described in claim 1, characterized in that: The height of the first braking ramp (10) and the second braking ramp (122) are both in the range of 3~5mm.

5. A lifting braking system as described in claim 1, characterized in that: One end of the brake base (21) is rotatably connected to the balance beam (4), the brake base (21) is slidably connected to the drive assembly (20), and the brake base (21) is rotated in a direction close to or away from the brake track (1) under the drive of the drive assembly (20) so that the brake base (21) can slide along the first brake ramp (10) to the brake track (1).

6. A lifting braking system as described in claim 1, characterized in that: The brake base (21) is provided with at least one connecting arm (210), the connecting arm (210) is inclined upward in a direction away from the brake base (21), and the top end of the connecting arm (210) is hinged to a connecting seat (22), the connecting seat (22) is used to connect to the balance beam (4); The brake base (21) is provided with at least one connecting plate (211), and the connecting plate (211) is provided with a sliding groove (212). The drive assembly (20) includes a drive rod (200), the bottom end of which is slidably fixed to the slide groove (212).

7. A lifting braking system as described in claim 2, characterized in that: At least one of the lifting brakes (2) is provided at the front end of the water tank trailer, and at least one of the lifting brakes (2) is provided at the rear end of the water tank trailer. The width of the brake base (21) for the lifting brake (2) located at the front end of the water tank trailer is greater than the width of the brake base (21) for the lifting brake (2) located at the rear end of the water tank trailer. The bottom of the brake base (21) with the smaller width is provided with at least one first brake pad (214), and the bottom of the brake base (21) with the larger width is provided with two spaced second brake pads (213).

8. A lifting braking system as described in claim 7, characterized in that: The second brake pad (213) has a second wedge surface (216) at one end near the starting point of the brake track (1), and the first brake pad (214) has a first wedge surface (215) at one end near the starting point of the brake track (1). The first wedge surface (215) and the second wedge surface (216) are both matched with the first brake ramp (10).

9. A water tank trailer, characterized in that, It includes: Vehicle body; Two sets of lifting braking systems as described in any one of claims 1 to 8 are symmetrically arranged along the width direction of the vehicle body.

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