Multi-channel combined disc type brake execution assembly and brake module

Abstract

The invention discloses a multi-channel combined disc type brake execution assembly and a brake module, and the brake execution assembly comprises a brake installation cylinder body which is fixedly arranged on an automobile bridge frame in a sleeving manner, and a plurality of hydraulic driving cavities are formed in the brake installation cylinder body in a surrounding manner corresponding to the circumferential direction of a brake disc; the hydraulic driving cavity is connected with a hydraulic booster so as to contain brake oil input from the hydraulic booster, and a plurality of through heat dissipation air openings are formed in the position, located on the outer side of the hydraulic driving cavity, of the brake mounting cylinder body. The piston power part is used for bearing the hydraulic boosting force injected by the hydraulic booster to form brake power; and the brake pad group is in driving connection with the piston power piece, and is driven by the brake power formed by the piston power piece to be pressed on a brake disc so as to form braking. The braking force can be greatly increased, the braking effect can be improved, the service life can be effectively prolonged, the maintenance cost and time are reduced, and the effective heat dissipation effect can be achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle braking, and particularly to a multi-channel combined disc brake actuator assembly and a brake module. Background Art

[0002] The braking system is an important guarantee for the safe driving of vehicles. It locks the wheels to make them not easy to rotate, thereby achieving the purpose of braking. The brake module is the main executing component of the braking system. Currently, the brake module mainly has two forms: disc brakes and drum brakes. Disc brakes use calipers to clamp the brake disc to achieve braking, while drum brakes usually achieve braking by pressing brake shoe pads against the inner wall of the brake drum. Drum brakes are widely used in heavy vehicles such as trucks and lorries due to their large braking force and low cost. However, since drum brakes are usually of a closed structure, problems such as excessive heat will occur during long-term braking, and in severe cases, it may even cause the tires to smoke and catch fire, for example, when going down a long slope. Although disc brakes are of an open structure and have better heat dissipation effects, their braking force is smaller and the cost is higher compared to drum brakes. Therefore, they are not suitable for the braking requirements of heavy vehicles. Therefore, it has become an urgent problem to simultaneously achieve high braking force, low cost, and good heat dissipation effects. Summary of the Invention

[0003] In order to overcome the deficiencies of the prior art, the purpose of the present invention is to provide a multi-channel combined disc brake actuator assembly and a brake module, which have the advantages of high braking force, low cost, and good heat dissipation effects.

[0004] The purpose of the present invention is achieved by the following technical solutions: According to the first aspect of the embodiments of the present disclosure, a multi-channel combined disc brake actuator assembly is provided, including: A brake mounting cylinder body fixedly sleeved on the vehicle bridge. A plurality of hydraulic drive chambers are circumferentially arranged in the brake mounting cylinder body corresponding to the brake disc. The hydraulic drive chambers are connected to a hydraulic booster to accommodate the brake oil input from the hydraulic booster, and a plurality of through heat dissipation air vents are provided on the outside of the hydraulic drive chambers on the brake mounting cylinder body; A piston power member slidably and sealingly arranged in each of the hydraulic drive chambers, for receiving the hydraulic boost injected by the hydraulic booster to form a braking force; and, A brake pad group slidably assembled in the brake mounting cylinder body. The brake pad group is drivingly connected to the piston power member and is driven by the braking force formed by the piston power member to press against the brake disc to form braking.

[0005] To implement the above technical solution, after installation, the brake execution assembly is fixed on the vehicle bridge and located on both sides of the brake disc, and the brake installation cylinder body on the side close to the wheel does not contact the wheel hub, so it will not affect the normal driving of the vehicle; when braking, the hydraulic booster is triggered to work. The hydraulic booster injects brake fluid into the hydraulic drive cavity to form a brake boost, thereby driving the piston power member to act, driving each brake pad group to move outward synchronously until it presses against the brake disc, and then the brake action can be executed. Since the brake pad group and the hydraulic drive cavity are arranged circumferentially around the brake disc, multiple brake braking surfaces can be evenly formed on the entire surface of the brake disc, greatly increasing the braking force and improving the braking effect. And because multiple groups of brake pad groups apply force to the brake disc evenly, the wear of the brake disc and the brake pad group is smaller during each braking, which can effectively extend the service life and reduce the cost and time of maintenance; at the same time, since a number of through heat dissipation air vents are provided on the outside of the hydraulic drive cavity, during the driving of the vehicle, air convection can enter the brake installation cylinder body through the heat dissipation air vents to dissipate heat from the brake pad group, and then discharge the heat generated by braking from other heat dissipation air vents, thereby forming an effective heat dissipation effect.

[0006] In some exemplary embodiments, a number of guiding and supporting blocks are provided in the brake installation cylinder body, and an accommodating space for accommodating the brake pad group is formed between adjacent guiding and supporting blocks, and the brake pad group is slidably assembled on the guiding and supporting blocks.

[0007] To implement the above technical solution, by providing the guiding and supporting blocks, on the one hand, the overall structural strength of the brake installation cylinder body can be improved, and a stress point can be provided for the deflection force generated by friction during braking, and on the other hand, the brake pad group can slide stably.

[0008] In some exemplary embodiments, the piston power member includes: A piston body for receiving hydraulic boost; and, A number of sealing rings sleeved on the piston body, the sealing rings elastically press against the inner wall of the hydraulic drive cavity, and can form elastic deformation to drive the piston body to reset when the hydraulic boost of the hydraulic booster is cancelled.

[0009] To implement the above technical solution, the piston body is a rigid member, which can provide a stable pressure for the brake pad group, and the sealing ring can provide a reset elastic force for the brake pad group while ensuring sufficient sealing performance, so as to cancel the brake action.

[0010] In some exemplary embodiments, the brake pad group includes: A pressure-bearing fixed plate slidably assembled on the guiding and supporting blocks, the pressure-bearing fixed plate is fixedly connected to one end of the piston body; and, A number of brake pads detachably connected to the pressure-bearing fixed plate.

[0011] To achieve the above technical solution, the pressure-bearing fixed plate can receive the driving force provided by the piston body and provide an installation basis for the brake pads. The brake pads are used to press against the brake disc in contact for friction to form a braking action. Since the brake pads are detachably connected to the pressure-bearing fixed plate, when the brake pads are worn to a certain extent, they can be directly disassembled and replaced, further reducing the maintenance cost.

[0012] In some exemplary embodiments, guide ribs are formed on both sides of the guide support block, and guide grooves adapted to the guide ribs are provided on the pressure-bearing fixed plate, and the guide ribs are slidably engaged with the guide grooves.

[0013] To achieve the above technical solution, the sliding connection of the pressure-bearing fixed plate is realized through the cooperation of the guide ribs and the guide grooves.

[0014] In some exemplary embodiments, a number of insertion holes are formed on the pressure-bearing fixed plate, and a number of insertion posts adapted to the insertion holes are provided on the brake pads.

[0015] To achieve the above technical solution, the detachable installation of the brake pads is realized by inserting the insertion posts into the insertion holes.

[0016] In some exemplary embodiments, the heat dissipation air vents are arranged close to the hydraulic drive chamber and are formed on both sides of the hydraulic drive chamber.

[0017] To achieve the above technical solution, the air convection entering from the heat dissipation air vents can pass through the brake pad group as much as possible, further improving the braking effect.

[0018] In some exemplary embodiments, the hydraulic drive chamber of one of the brake execution components protrudes from the brake installation cylinder block, and mounting bosses are formed on the inner sides of the hydraulic drive chambers. The mounting bosses are used for fixedly connecting with the flange plates arranged on the vehicle bridge.

[0019] To achieve the above technical solution, the installation and fixation of the brake execution module are realized.

[0020] In some exemplary embodiments, mating connection bosses and connection grooves are provided between the brake installation cylinder blocks of the two brake execution components; connection lugs integrally provided with the guide support blocks are provided on the inner walls of the brake installation cylinder blocks, and a number of locking attachment holes are provided on the connection grooves.

[0021] To achieve the above technical solution, the connection stability of the two groups of brake execution modules is improved, and it is convenient to lock and fix the brake installation cylinder blocks of the two groups of brake execution modules.

[0022] According to a second aspect of the embodiments of the present disclosure, a multi-channel combined disc brake module is provided, including: a brake disc, which is synchronously drivingly connected to the wheel hub; and two sets of brake execution components as described in the first aspect, and the two sets of brake execution components are respectively arranged on both sides of the brake disc to apply frictional force to the brake disc to form braking, and the two sets of brake execution components are relatively closely combined to form an integral structure.

[0023] By implementing the above technical solution, by setting two sets of brake execution components, they can act simultaneously to clamp the brake disc for braking, so as to achieve greater braking force. And when one of the hydraulic boosters or booster channels fails, there is still another set of brake execution components that can continue to work, ensuring that there is sufficient braking function for the vehicle to drive to the repair point.

[0024] In summary, compared with the prior art, the present invention has the following beneficial effects: In the embodiments of the present invention, by providing a multi-channel combined disc brake execution component and a brake module, after installation, the brake execution component is fixed on the vehicle bridge and located on both sides of the brake disc, and the brake installation cylinder body close to the wheel side does not contact the wheel hub, so it will not affect the normal driving of the vehicle; when braking, the hydraulic booster is triggered to work, and the hydraulic booster injects brake oil into the hydraulic drive cavity to form a brake boost, thereby driving the piston power member to act, driving each brake pad group to move outwards synchronously until it presses against the brake disc, and then the brake action can be executed. Since the brake pad group and the hydraulic drive cavity are arranged circumferentially around the brake disc, multiple brake braking surfaces can be formed evenly on the entire surface of the brake disc, greatly increasing the braking force and improving the braking effect. And because multiple brake pad groups apply force to the brake disc evenly, the wear of the brake disc and the brake pad group during each braking is smaller, which can effectively extend the service life and reduce the cost and time of maintenance and repair; at the same time, since a number of through heat dissipation air vents are provided outside the hydraulic drive cavity, during the driving of the vehicle, air convection can enter the brake installation cylinder body through the heat dissipation air vents to dissipate heat from the brake pad group, and then discharge the heat generated by braking from other heat dissipation air vents, thereby forming an effective heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic structural diagram of the multi-channel combined disc brake module in the embodiments of the present invention.

[0026] Figure 2 It is an exploded schematic diagram of the multi-channel combined disc brake module in the embodiments of the present invention.

[0027] Figure 3 It is a schematic structural diagram of the multi-channel combined disc brake execution component in the embodiments of the present invention.

[0028] Figure 4 This is an exploded view of the multi-channel combined disc brake actuator assembly in the embodiment of the present invention.

[0029] The corresponding component names represented by the numbers and letters in the figure are as follows: 10. Brake disc; 11. Wheel hub; 20. Brake actuator assembly; 21. Brake mounting cylinder block; 211. Hydraulic drive chamber; 212. Heat dissipation air vent; 213. Guide support block; 214. Guide rib; 215. Mounting boss; 216. Connecting boss; 217. Connecting groove; 218. Connecting lug; 219. Locking attachment hole; 22. Piston power member; 221. Piston body; 222. Sealing ring; 23. Brake pad group; 231. Pressure-bearing fixing plate; 232. Brake pad; 233. Guide groove; 234. Insertion hole; 235. Insertion post; 30. Vehicle bridge. Detailed implementation manners

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] As Figures 1 to 4 shown, the embodiment of the present invention provides a multi-channel combined disc brake module, including: a brake disc 10, which is synchronously driven and connected to a wheel hub 11; and two groups of brake actuator assemblies 20 respectively disposed on both sides of the brake disc 10 for applying frictional force to the brake disc 10 to form braking, and the two groups of brake actuator assemblies 20 are relatively closely combined to form an integral structure.

[0032] Specifically, the brake disc 10 can be assembled and fixed to the wheel hub 11 by means of bolt connection. A connecting flange is provided on the wheel hub 11 for locking and fixing with the wheel, and the wheel hub 11 is used for assembling with the vehicle main shaft to drive the wheel to rotate.

[0033] The brake execution assembly 20 of the present invention includes: a brake installation cylinder block 21 fixedly sleeved on the vehicle bridge 30. A number of hydraulic drive chambers 211 are circumferentially arranged in the brake installation cylinder block 21 corresponding to the brake disc 10. The hydraulic drive chambers 211 are connected to a hydraulic booster to accommodate the brake oil input from the hydraulic booster. And on the brake installation cylinder block 21 outside the hydraulic drive chambers 211, a number of through heat dissipation air vents 212 are provided; a piston power member 22 slidably and sealingly arranged in each hydraulic drive chamber 211, which is used to receive the hydraulic boost injected by the hydraulic booster to form a brake power; and a brake pad group 23 slidably assembled in the brake installation cylinder block 21. The brake pad group 23 is drivingly connected to the piston power member 22 and is driven by the brake power formed by the piston power member 22 to press tightly against the brake disc 10 to form a brake.

[0034] It can be understood that the structures of the two sets of brake execution assemblies 20 are basically the same, only slightly different in shape. Between the brake installation cylinder blocks 21 of the two sets of brake execution assemblies 20, there are mating connection bosses 216 and connection grooves 217, and the two sets of brake execution assemblies 20 are relatively buckled by engaging the connection bosses 216 and the connection grooves 217 with each other, which can improve the connection stability of the two sets of brake execution modules; and the hydraulic drive chambers 211 of one of the brake execution assemblies 20 protrude from the brake installation cylinder block 21, and mounting bosses 215 are formed on the inner sides of the hydraulic drive chambers 211. The mounting bosses 215 are used for fixedly connecting with the flange plates arranged on the vehicle bridge 30, so as to realize the installation and fixation of the brake execution assembly 20. After the installation is completed, the brake disc 10 is located inside the brake installation cylinder block 21, and the other brake execution assembly 20 near the wheel side is in a suspended state and has a sufficient gap from the wheel hub 11, so as not to affect the normal rotation of the wheel hub 11.

[0035] During actual brake control, any one of the two sets of brake execution assemblies 20 can be controlled to act to press tightly against the brake disc 10. Preferably, the two sets of brake execution assemblies 20 are controlled to act simultaneously to clamp the brake disc 10 for braking, so as to achieve a greater braking force. At the same time, at least one liquid path interface needs to be provided on the hydraulic drive chamber 21 for connecting with the hydraulic booster through a pipeline. The two sets of brake execution assemblies 20 can be connected to different hydraulic boosters, or when the hydraulic booster has two booster flow channels, the two sets of brake execution assemblies 20 can be respectively connected to the two booster flow channels. The purpose of this is that when one of the hydraulic boosters or the booster flow channels fails, there is still another set of brake execution assemblies that can continue to work, ensuring that there is sufficient braking function for the vehicle to drive to the repair point.

[0036] A plurality of guide support blocks 213 are provided in the brake mounting cylinder 21, and an accommodating space for accommodating the brake pad group 23 is formed between adjacent guide support blocks 213. The brake pad group 23 is slidably assembled on the guide support blocks 213. By providing the guide support blocks 213, on the one hand, the overall structural strength of the brake mounting cylinder 21 can be improved, and a force point can be provided for the deflection force generated by friction during braking. On the other hand, the brake pad group 23 can be made to slide stably; and a connecting lug 218 integrally provided with the guide support block 213 is provided on the inner wall of the brake mounting cylinder 21, and a corresponding fixing hole is provided on the connecting lug 218, and a plurality of locking attachment holes 219 are provided on the connecting groove 217. The fixing hole and the locking attachment hole 219 are both used to penetrate bolts so as to lock and fix the brake mounting cylinders 21 of the two groups of brake execution modules.

[0037] The piston power component 22 includes: a piston body 221 for receiving hydraulic power assistance; and a plurality of sealing rings 222 mounted on the piston body 221. The sealing rings 222 elastically press against the inner wall of the hydraulic drive chamber 211 and can form elastic deformation to drive the piston body 221 to reset when the hydraulic booster cancels the hydraulic power assistance.

[0038] The piston body 221 is slidably connected to the hydraulic drive chamber 211. For example, a sliding hole adapted to the piston body 221 is provided on the hydraulic drive chamber 211, and the piston body 221 is inserted into the sliding hole to form a sliding connection. Usually, a ring groove for fitting and fixing the sealing ring 222 is provided on the piston body 221. The sealing ring 222 is an elastic structure such as a rubber ring, and a card groove for fitting with the sealing ring 222 is provided on the inner wall of the hydraulic drive chamber 211. For example, an annular card groove for fitting with the sealing ring 222 is provided on the inner wall of the sliding hole. When the piston body 221 is extended and retracted, the sealing ring 222 will not separate from the embedding groove, thereby generating elastic deformation to form elastic force; the piston body 221 is a rigid part, which can provide stable pressure for the brake pad group 23, and the sealing ring 222 can provide a reset elastic force for the brake pad group 23 while ensuring sufficient sealing, thereby canceling the braking action; and at least one hydraulic input hole is provided on the side of each hydraulic drive chamber 211 to facilitate the configuration of pipelines and connection with the hydraulic booster to form hydraulic boosting to push the piston body 221 out.

[0039] The brake pad set 23 includes: a pressure-bearing fixed plate 231 slidably assembled on the guide support block 213, with the pressure-bearing fixed plate 231 fixedly connected to one end of the piston body 221; and a number of brake sub-pads 232 detachably connected to the pressure-bearing fixed plate 231. Among them, a number of insertion holes 234 are formed on the pressure-bearing fixed plate 231, and a number of insertion posts 235 mating with the insertion holes 234 are provided on the brake sub-pads 232. The insertion posts 235 and the insertion holes 234 can be in clearance fit, so that the brake sub-pads 232 will not easily come off after being assembled to the pressure-bearing fixed plate 231. By inserting the insertion posts 235 into the insertion holes 234, the detachable installation of the brake sub-pads 232 is realized. The brake sub-pads 232 are preferably set to be arc-shaped to ensure the maximum contact area with the brake disc 10. The hydraulic drive cavity 211 and the brake pad set 23 are usually set in 3-6 groups. Preferably, four groups are provided in this embodiment.

[0040] The pressure-bearing fixed plate 231 can receive the driving force provided by the piston body 221 and provide an installation basis for the brake sub-pads 232, while the brake sub-pads 232 are used to press against the brake disc 10 for friction to form a braking action. Since the brake sub-pads 232 are detachably connected to the pressure-bearing fixed plate 231, when the brake sub-pads 232 are worn to a certain extent, they can be directly disassembled and replaced, further reducing the maintenance cost.

[0041] Furthermore, guide ribs 214 are formed on both sides of the guide support block 213, and guide grooves 233 adapted to the guide ribs 214 are provided on the pressure-bearing fixed plate 231. The guide ribs 214 and the guide grooves 233 are in sliding fit. The guide ribs 214 are provided on both sides of the pressure-bearing fixed plate 231. By matching the guide ribs 214 with the guide grooves 233, the sliding connection of the pressure-bearing fixed plate 231 is realized. The guide ribs 214 are in an outward convex form, with simpler overall processing and greater structural strength, and can withstand greater stress.

[0042] In this embodiment, the heat dissipation air vents 212 are arranged close to the hydraulic drive cavity 211, and heat dissipation air vents 212 are formed on both sides of the hydraulic drive cavity 211, so that the air convection entering from the heat dissipation air vents 212 can pass through the brake pad set 23 as much as possible, further improving the braking effect.

[0043] After the installation of the present invention is completed, the brake execution assembly 20 is fixed on the vehicle bridge 30 and located on both sides of the brake disc 10, and the brake installation cylinder block 21 on the side close to the wheel does not contact the wheel hub 11, so it will not affect the normal driving of the vehicle; when braking, the hydraulic booster is triggered to work, and the hydraulic booster injects brake fluid into the hydraulic drive chamber 211 to form a brake boost, thereby driving the piston power member 22 to act, driving each brake pad group 23 to move outward synchronously until it presses against the brake disc 10, and then the brake action can be executed. Since the brake pad group 23 and the hydraulic drive chamber 211 are arranged circumferentially around the brake disc 10, a plurality of brake braking surfaces can be evenly formed on the entire surface of the brake disc 10, greatly increasing the braking force and improving the braking effect. And because the multi-group brake pad groups 23 apply force to the brake disc 10 evenly, the wear of the brake disc 10 and the brake pad groups 23 is smaller during each braking, which can effectively extend the service life and reduce the cost and time of maintenance and repair; at the same time, since a number of through heat dissipation air vents 212 are provided outside the hydraulic drive chamber 211, during the driving of the vehicle, air convection can enter the brake installation cylinder block 21 through the heat dissipation air vents 212 to dissipate heat from the brake pad group 23, and then discharge the heat generated by braking from other heat dissipation air vents 212, thereby forming an effective heat dissipation effect.

[0044] This application can be applied to heavy-duty vehicles such as passenger cars, trucks, and freight trucks. Through two relatively closely combined brake execution assemblies 20 and a number of brake pad groups arranged in a 360° ring, it can not only ensure the maximum area of contact between the brake pads 232 and the brake disc 10, improve the braking force of the brake, and be able to withstand high pressure, but also make the structure more compact and realize the optimal layout of the available space.

[0045] In addition, most of the existing heavy-duty vehicles use pneumatic power-assisted brakes, which are difficult to achieve the on-off function of anti-lock brakes. The anti-lock function can only be achieved by the driver controlling the brake tension. The control frequency is low, resulting in higher driving risks. When designing brakes for trucks, the braking force is usually designed according to the fully loaded state. When the truck is unloaded, sudden braking is more likely to cause locking and slipping. In particular, in order to reduce the axial differential speed of one wheel width and reduce friction resistance when the front wheels of the truck are turned, they are often designed as a single wheel. The braking force of the front wheel is greater than the friction force of the single wheel, which makes it easier to form a locking state, further causing steering wheel loss of control, vehicle skidding, etc., leading to frequent safety accidents. Although the existing disc brakes use hydraulic power assistance, they are difficult to meet the large braking force requirements of trucks. If the truck uses disc brakes on the front wheels and drum brakes on the rear wheels, the cost will be high. The structural design of the multi-channel combination disc brake module of this application can be matched with the use of hydraulic power assistance to meet the requirements of the anti-lock function. It can provide powerful braking force when fully loaded. When unloaded, it can realize the anti-lock on-off function through the configured hydraulic power assistance to prevent tire locking, make the steering wheel more controllable, ensure the stability and safety of the vehicle body, and reduce the occurrence of traffic accidents.

[0046] The above embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patented invention. It should be noted that those skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention. These variations and improvements are equivalent modifications and improvements to the above embodiments based on the essential technology of the present invention and fall within the scope of protection of the present invention.

Claims

1. A multi-channel combined disc brake actuator assembly, characterized in that, Comprising: A brake installation cylinder body fixed to the vehicle bridge of an automobile. A number of hydraulic drive chambers are circumferentially arranged in the brake installation cylinder body corresponding to the brake disc. The hydraulic drive chambers are connected to a hydraulic booster to accommodate the brake oil input from the hydraulic booster. And a number of through heat dissipation air vents are provided on the brake installation cylinder body outside the hydraulic drive chambers. A piston power member slidably and sealingly arranged in each hydraulic drive chamber, for receiving the hydraulic boost injected by the hydraulic booster to form a braking power. And, A brake pad group slidably assembled in the brake installation cylinder body. The brake pad group is drivingly connected to the piston power member and is driven by the braking power formed by the piston power member to press against the brake disc to form braking.

2. The multi-channel combined disc brake actuator assembly according to claim 1, characterized in that, A number of guiding and supporting blocks are provided in the brake installation cylinder body. A receiving space for accommodating the brake pad group is formed between adjacent guiding and supporting blocks. The brake pad group is slidably assembled on the guiding and supporting blocks.

3. The multi-channel combined disc brake actuator assembly according to claim 2, wherein, The piston power member includes: A piston body for receiving the hydraulic boost; and, A number of sealing rings sleeved on the piston body. The sealing rings are elastically pressed against the inner wall of the hydraulic drive chamber and can form an elastic deformation to drive the piston body to reset when the hydraulic booster cancels the hydraulic boost.

4. The multi-channel combined disc brake actuator assembly according to claim 3, characterized in that, The brake pad group includes: A pressure-bearing fixed plate slidably assembled on the guiding and supporting blocks. The pressure-bearing fixed plate is fixedly connected to one end of the piston body; and, A number of brake pads detachably connected to the pressure-bearing fixed plate.

5. The multi-channel combined disc brake actuator assembly according to claim 4, characterized in that, Guiding ribs are formed on both sides of the guiding and supporting blocks. Guiding grooves adapted to the guiding ribs are provided on the pressure-bearing fixed plate. The guiding ribs are slidably engaged with the guiding grooves.

6. The multi-channel combined disc brake actuator assembly according to claim 4 or 5, characterized in that, A number of insertion holes are formed on the pressure-bearing fixed plate. Insertion posts adapted to the insertion holes are provided on the brake pads.

7. The multi-channel combined disc brake actuator assembly according to claim 1, wherein, The heat dissipation air vents are arranged close to the hydraulic drive chambers and are formed on both sides of the hydraulic drive chambers.

8. The multi-channel combined disc brake actuator assembly according to claim 1, wherein The hydraulic drive chamber of one of the brake execution assemblies protrudes from the brake installation cylinder body, and an installation boss is formed inside each hydraulic drive chamber. The installation boss is used for fixedly connecting with a flange arranged on the vehicle bridge.

9. The multi-channel combined disc brake actuator assembly according to claim 2, wherein A connecting boss and a connecting groove that cooperate with each other are provided between the brake installation cylinder bodies of the two brake execution assemblies; Connecting lugs integrally provided with the guiding and supporting blocks are provided on the inner wall of the brake installation cylinder body, and a number of locking attachment holes are provided on the connecting groove.

10. A multi-channel combined disc brake module, characterized in that, Comprising: A brake disc drivingly connected to the wheel hub synchronously; and, Two sets of brake execution assemblies as described in any one of claims 1-9. The two sets of brake execution assemblies are respectively arranged on both sides of the brake disc to apply frictional force to the brake disc to form braking. The two sets of brake execution assemblies are relatively closely combined to form an integral structure.

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