CN211901381U - Integral air pressure disc brake - Google Patents

Abstract

The utility model relates to an atmospheric pressure disc brake field discloses integral atmospheric pressure disc brake, including pincers body and pressure arm subassembly, the pressure arm subassembly includes pressure arm and roller bearing, and the lower terminal surface of atress portion is offered and is used for the cooperation notch with the roller bearing, and the lower extreme of the circumference side of roller bearing contacts with the pressure arm, and the upper end cooperation of roller bearing circumference side is in the cooperation notch, and the axis of cooperation notch is perpendicular with the axis of shaft hole; a process hole is formed in the side face of the first assembly cavity, and the projection of the matching notch along the extending direction of the matching notch falls into a projection area of the process hole along the axial direction of the matching notch; the brake also comprises an adjuster assembly and a supporting seat pressing plate arranged on the lower end face of the first assembling cavity, the lower end of the pressure arm is supported on the adjuster assembly, and the adjuster assembly is supported on the supporting seat pressing plate through a return spring. The brake has the advantages of reliable braking, simple processing and high production efficiency.

Description

Integral air pressure disc brake

Technical Field

The utility model relates to an atmospheric pressure disk brake field has especially related to integral atmospheric pressure disk brake.

Background

There are various air disc brakes on the market at present, and if classified according to the pushing mode, the air disc brakes can be classified into single-push-rod air disc brakes and double-push-rod air disc brakes, and the double-push-rod air disc brakes can be classified into axial air disc brakes and radial air disc brakes, and if classified according to the assembling mode of the rotating assembly, the air disc brakes can be classified into upper cover type air disc brakes and non-upper cover type air disc brakes. The non-upper cover type air pressure disc brake is mainly an axial double-push-rod air pressure disc brake, basically, the rotating component is in a small assembly form, and the rotating component is placed in the cavity of the integral caliper body in the assembly form and is sealed by a bottom cover, a sealing cover cap and the like; the upper cover type air pressure disc brake mainly comprises a single push rod air pressure disc brake and a radial double push rod air pressure disc brake.

The technical scheme discloses an integral brake caliper body, wherein a part of the brake caliper body replacing an end cover is of an integrally formed structure, a cavity for mounting an adjuster assembly is formed in the caliper body, a special processing tool needs to be introduced in the processing process of a supporting surface and other parts, the brake caliper body is called an angle head in the industry, the clamping is inconvenient in the processing process of the angle head, the processing process of the angle head is complicated, the production efficiency is low, and the cost is high.

The utility model provides a for divide into two parts with the pincers body, but the lower part of upper cover portion and pincers body forms an organic whole, makes the pincers body upper cover portion need not use more bolt to fix, avoids traditional upper cover portion structural strength to need the defect of more bolted connection greatly.

Among the prior art, wuhan yuan feng automobile parts limited's patent 201410358047.5 discloses "have bearing limit structure's atmospheric pressure disk brake pressure arm", this pressure arm needs the stopper and matches the use at bearing at the installation, and it is narrow and small owing to the pincers body of non-end cover all has the installation cavity assembly mouth, is unfavorable for erection equipment and staff to get into and processes the assembly in this space in the actual assembling process, so the installation of stopper is very complicated under this kind of structure, and production efficiency is lower.

Patent 201510788100.X of Wuhan Yuanfeng automobile parts Limited discloses an assembly method of an air pressure disc brake, which utilizes an integral caliper, and from the attached drawings and the description of the specification, if the supporting surface is of an integrally formed structure, the selected integral caliper body is the integral caliper body of Weibo, and the defects of the caliper body are described in the documents; the supporting solution of the supporting surface selected for this purpose is the solution disclosed in its own patent 201410358047.5, using a limiting block, if the supporting surface is of non-integral structure, the drawbacks of which are also mentioned above. In addition, the assembly scheme requires a special fixture for assembly when the first component and the second component are assembled, so that the whole assembly process cannot be completed on the same processing equipment, and automation is not facilitated.

And traditional pivot and cylinder cap are line contact, and the contact force is great, causes spare part to become invalid easily. And the pivot is mostly the slip design, and frictional resistance is great, though patent 201410358047.5 discloses "the atmospheric pressure disk brake pressure arm that has bearing limit structure" uses needle bearing to realize rolling and replace the slip, but this kind of structural assembly is comparatively complicated.

In view of the problems in the prior art, the applicant provides a new technical solution to solve the above technical problems.

SUMMERY OF THE UTILITY MODEL

The utility model discloses it is complicated and the assembly degree of difficulty is big to prior art atmospheric pressure disc brake pincers body manufacturing, and assembly efficiency low grade defect provides integral atmospheric pressure disc brake.

In order to solve the technical problem, the utility model discloses a following technical scheme can solve:

the integral air pressure disc brake comprises an integrally formed caliper body, a first assembly cavity is formed in the caliper body, a pressure arm assembly is mounted in the first assembly cavity, a shaft hole and a pressing hole are formed in the upper end face of the first assembly cavity, the pressure arm assembly comprises a pressure arm and a rolling shaft, a stress part is formed in the first assembly cavity, a matching notch used for being matched with the rolling shaft is formed in the lower end face of the stress part, the lower end of the circumferential side face of the rolling shaft is in contact with the pressure arm, the upper end of the circumferential side face of the rolling shaft is matched in the matching notch, and the axis of the matching notch is perpendicular to the axis of the shaft hole; a process hole is formed in the side face of the first assembly cavity, and the projection of the matching notch along the extending direction of the matching notch falls into a projection area of the process hole along the axial direction of the matching notch; the brake also comprises an adjuster assembly and a supporting seat pressing plate arranged on the lower end face of the first assembling cavity, the lower end of the pressure arm is supported on the adjuster assembly, and the adjuster assembly is supported on the supporting seat pressing plate through a return spring. Thereby this air pressure disc brake's pincers body is through the area of contact of design cooperation notch increase and roller bearing, the contact force between the two has been reduced, thereby make the roller bearing can take place to roll in the cooperation inslot, and the fabrication hole of design, make processing cooperation notch simpler, only need fix a position the work piece can realize following the outside cooperation notch of directly processing out the high accuracy at horizontal machining center, the course of working can go on under same clamping condition with other processing position, so practice thrift process time greatly, the installation in the later stage of also being convenient for of the pincers body of this kind of structure of design simultaneously, all installation processes can assemble in proper order on the assembly jig, the assembly process is simpler, assembly efficiency is also higher.

Preferably, the number of the process holes is two, the two process holes are respectively arranged on the left side wall of the first assembly cavity and the right side wall of the first assembly cavity, and the process holes and the matching notches are coaxially arranged; the number of the matching notches is two, and the matching notches are distributed on the left side and the right side of the shaft hole; every cooperation notch is formed with and is used for carrying out spacing face to the roller bearing near the one end in shaft hole, and the one end of keeping away from the shaft hole is for link up state and fabrication hole intercommunication, and two cooperation notches about two fabrication holes convenient processing to the realization cooperates with two roller bearings.

Preferably, the number of the stress parts is two, the stress parts are distributed on two sides of the axis where the shaft hole is located, and the lower end face of each stress part is provided with a matching notch; the left side face and the right side wall of the stress part and the first assembling cavity are provided with installing grooves, and the fabrication holes and the assembling notches are distributed on two sides of the installing grooves.

Preferably, the cross-section of the mating notch is arcuate. The cambered surface can be matched with the rolling shaft, so that the contact area is increased, and the line contact is changed into surface contact; and the projection of the partial side line of the section of the fabrication hole and the side line of the section of the assembly notch along the axial direction of the assembly notch is superposed.

Preferably, the clamp body is integrally formed with a support frame at the lower end of the first assembly cavity, an assembly port is arranged in the support frame and is communicated with the first assembly cavity, column pin holes are arranged on the left side and the right side of the assembly port, and the assembly port is communicated with the column pin holes; the support is installed in the assembly hole, the pin assembly is installed in the pin hole, the upper end of the support is fixed to the pin assembly, the pressing plate assembly arranged in the up-down direction is installed at the back of the assembly hole, the upper end of the pressing plate assembly is connected with the supporting base pressing plate, and the lower end of the pressing plate assembly is fixed to the clamp body through the connecting piece. The support is convenient for the brake block to install, and the support assembly is simple and reliable moreover.

Preferably, the brake shoe further comprises a brake block and a retaining spring for mounting the brake block, a mounting port for assembling the brake block is formed in the support, the brake block comprises an upper brake block and a lower brake block, the upper brake block and the lower brake block are mounted in the mounting port of the support and can slide along the support, a brake push plate is arranged between the upper brake block and the adjuster assembly, a protrusion port for the adjuster press plate to protrude downwards is formed in the support press plate, the brake push plate abuts against the lower end of the adjuster assembly, the brake push plate is arranged on the lower side of the support press plate, the lower end face of the brake push plate is in contact with the upper brake block, and the adjuster assembly moves downwards to push the.

Preferably, the upper brake block and the brake push plate are both provided with a retaining spring, the retaining spring is arranged on the pressure plate assembly in a matching way, and the upper brake block drives the retaining spring to move up and down along the pressure plate assembly when sliding up and down.

Preferably, the pressure arm comprises a pressing part and an acting part connected with the pressing part, a supporting groove is formed in the adjuster assembly, a bearing assembly is installed in the supporting groove, the lower end of the acting part is supported on the bearing assembly, an assembling groove used for installing a rolling shaft is formed in the upper end of the acting part, and the rolling shaft is limited between the assembling groove and a matching groove opening; when the pressing part moves up and down, the acting part can be driven to rotate around the rolling shaft, and the lower end of the acting part drives the adjuster assembly to work.

Preferably, the number of the action parts is two, and the action parts are workpieces with sector ring-shaped sections; the seal seat is arranged in the technical hole and comprises an inserting part inserted in the technical hole and a limiting part arranged in the mounting groove, the limiting part limits the outer end of the roller, and the projection of the limiting part along the axial direction of the roller covers part or all of the projection of the roller along the axial direction of the roller.

Preferably, the sealing seat is in a step shape, and the cross-sectional area of the limiting part is larger than that of the inserting part.

The utility model discloses owing to adopted above technical scheme, have following apparent technological effect:

the utility model discloses a pincers body structure to atmospheric pressure disc brake designs, and the method of creative adoption outside processing makes can form the high accuracy in the pincers body and roller bearing complex arc wall, has practiced thrift the processing cost greatly for traditional integrated into one piece, and machining efficiency is also very high moreover. Meanwhile, the area of the contact part of the assembly notch and the roller is increased, so that the contact force is reduced, and the roller can roll more conveniently and simply. Meanwhile, the clamp body is convenient to clamp and position, all processing items can be completed by one-time clamping on one processing center, and the position accuracy between the processing parts of the clamp body is ensured. Meanwhile, the clamp body with the structure is convenient for assembling parts of the air pressure disc brake. And utilize the pressure arm mechanism of this kind of pincers body assembly to have the assembly simple, the less advantage of contact force, because adopt curved cooperation notch to assemble the pivot, greatly reduced the contact force of roller bearing and atress portion, make the roller bearing look after need coating lubricating grease just can take place to roll between cooperation notch and assembly groove, the assembly of this partial structure has been simplified greatly, and both ends all carry on spacingly about the roller bearing, can guarantee that the roller bearing can not break away from the effect portion, make the whole atress of effect portion more balanced.

The air pressure disc brake has the advantages that the components are easy to assemble, enough assembly space is provided for assembly during assembly, the traditional bearing assembly arranged on the pressure arm is not needed, and the cost is lower. Meanwhile, the assembly precision of all parts of the whole clamp body is reliable, and the brake block slides up and down stably. The air disc brake is stable in braking and quick and reliable in return, and meanwhile, the roller of the pressure arm assembly moves in a rolling mode and contacts with the caliper body in a surface contact mode, so that the air disc brake cannot cause large load to the local part of the caliper body, the service life of the air disc brake is prolonged, and the failure rate is reduced.

Drawings

Fig. 1 is a schematic view of the overall structure of the caliper body.

Fig. 2 is a perspective view of the rear view of the caliper body.

Fig. 3 is a left side view of fig. 1.

Fig. 4 is a schematic perspective view of the cross-sectional view of fig. 3B-B.

Fig. 5 is an initial state diagram in the clamping state of the caliper body.

Fig. 6 is a schematic structural view of the air disc brake.

Fig. 7 is a left side view of fig. 6.

Fig. 8 is a cross-sectional view of fig. 7.

Fig. 9 is a partially enlarged view of fig. 8.

FIG. 10 is a schematic diagram of the construction of the pressure arm assembly.

Fig. 11 is a rear perspective view of the air disc brake.

Fig. 12 is an internal schematic view of the air disc brake.

Fig. 13 is a half sectional view of the air disc brake.

Fig. 14 is a schematic structural view of a support base plate.

Fig. 15 is a schematic structural view of the stent.

Fig. 16 is a schematic view of the structure of the retaining spring.

The names of the parts indicated by the numerical references in the drawings are as follows: 1-clamp body, 2-first assembly cavity, 3-shaft hole, 4-stress part, 5-matching notch, 6-fabrication hole, 7-limiting surface, 8-mounting groove, 9-second cavity, 10-positioning table, 11-positioning shoulder, 12-positioning groove, 13-pressure arm, 14-roller, 15-pressing part, 16-action part, 17-adjuster assembly, 18-assembly groove, 19-sealing seat, 20-insertion part, 21-limiting part, 30-pin hole, 31-pressing hole, 32-supporting seat pressing plate, 33-return spring, 34-supporting frame, 35-assembly opening, 36-bracket, 37-pressing plate component, 38-retaining spring, 39-upper brake block, 40-lower brake block, 41-brake push plate, 42-bearing component, 43-supporting groove, 44-supporting platform, 45-clamping interface, 46-clamping lug, 47-supporting plate, 48-outer press plate, 49-50-pin, 51-connecting piece, 52-extension opening, 60-mounting opening and 61-guide groove.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

Example 1

As shown in fig. 1 to 4, the air disc brake is a single push rod brake, and includes an integrally formed caliper body 1 and a pressure arm assembly installed in the caliper body 1, and the caliper body 1 is integrally cast. The upper, lower, left, right, front and rear positions below are based on fig. 1. A first assembling cavity 2 for assembling the pressure arm assembly is formed in the clamp body 1, a shaft hole 3 is formed in the upper end face of the first assembling cavity 2, the center of the shaft hole 3 is the braking center of the brake, and an adjusting rod of the adjuster assembly 17 is assembled in the shaft hole 3 during assembling. The first assembly cavity 2 is formed with a stress part 4, and the stress part 4 is a boss integrally formed in the first assembly cavity 2 and extending downwards. The lower end face of the stress part 4 is provided with a matching notch 5 used for matching with the roller 14, and the axis of the matching notch 5 is vertical to the axis of the shaft hole 3; fabrication hole 6 has been seted up to the side of first assembly chamber 2, and cooperation notch 5 falls into in the projection region of fabrication hole 6 along 5 axis directions of cooperation notch along the projection of 5 extending directions of cooperation notch, and fabrication hole 6 is used for processing cooperation notch 5, because directly processes from the lower extreme opening of first assembly chamber 2, not only need use the angle head to reduce machining efficiency, and angle head processing also hardly processes out the cooperation notch 5 of the shape that this embodiment narrated moreover. Thereby this pincers body 1 through design cooperation notch 5 increase and roller bearing 14's area of contact, reduced the contact force between the two to make roller bearing 14 can take place to roll in the cooperation inslot, the fabrication hole 6 of design moreover, make processing cooperation notch 5 simpler, only need fix a position the work piece can realize following outside direct processing and go out the cooperation notch 5 of high accuracy at horizontal machining center, so the process time has been practiced thrift greatly.

In the present embodiment, since the single push rod type air disc brake has two rollers 14, the number of the fitting notches 5 and the tooling holes 6 is also two in the present embodiment in order to match therewith. Two fabrication holes 6 are respectively arranged on the left side wall of the first assembly cavity 2 and the right side wall of the first assembly cavity 2, the fabrication holes 6 are coaxially arranged with the matching notches 5, and the two fabrication holes 6 are respectively used for processing the matching notches 5 on the left side and the matching notches 5 on the right side, so that the two fabrication holes are matched with the two rolling shafts 14. The two matching notches 5 are respectively distributed on the left side and the right side of the shaft hole 3; one end of each matching notch 5, which is close to the shaft hole 3, is provided with a limiting surface 7 for limiting the rolling shaft 14, and one end, which is far away from the shaft hole 3, is communicated with the technical hole 6 in a through state.

For the convenience of processing cooperation notch 5 and be convenient for assemble with 17 pressure arm subassemblies of adjuster assembly, the number of atress portion 4 is two, distributes in the both sides of shaft hole 3 place axis, and cooperation notch 5 has all been seted up to the lower terminal surface of every atress portion 4, and cooperation notch 5 runs through the side that atress portion 4 kept away from 3 one ends in shaft hole. Mounting grooves 8 are formed between the force bearing part 4 and the left side surface and the right side wall of the first assembly cavity 2, and the fabrication holes 6 and the assembly grooves 18 are distributed on two sides of the mounting grooves 8. The mounting groove 8 is used for sealing the process hole 6 in the later period, and sealing is guaranteed to be more convenient.

Because the cross-section of roller 14 is circular, so the cross-section of cooperation notch 5 is the arc, and when the assembly, the upper end of roller 14 is contradicted in cooperation notch 5 to increased area of contact, made the line contact become the face contact, make roller 14 can roll in cooperation notch 5 smoothly.

Wherein, the brake also comprises an adjuster assembly 17 and a supporting pressure plate 32 arranged on the lower end surface of the first assembly cavity 2, the lower end of the pressure arm 13 is supported on the adjuster assembly 17, the adjuster assembly 17 is supported on the supporting pressure plate 32 through a return spring 33

As shown in fig. 6 to 10, the upper end surface of the first assembling chamber 2 is provided with a pressing hole 31, and it is obvious that the pressing hole 31 and the shaft hole 3 are both communicated with the first assembling chamber 2. In this embodiment, the pressure arm assembly includes a pressure arm 13 and a roller 14, a lower end of a circumferential side of the roller 14 is in contact with the pressure arm 13, and an upper end of the circumferential side of the roller 14 is fitted in the fitting notch 5, so that the roller 14 is retained between the upper fitting notch 5 and the lower pressure arm 13, and an end of the roller 14 close to the shaft hole 3 is retained by the retaining surface 7.

The specific structure of the pressure arm 13 is described in detail below. The pressure arm 13 includes a pressing portion 15 and an acting portion 16 connected to the pressing portion 15, and a pressing end of the pressing portion 15 is located at a pressing port through which the pressing portion 15 acts during braking. The lower end of the action part 16 is abutted against the adjuster assembly 17, the upper end of the action part 16 is provided with an assembling groove 18 for mounting the roller 14, and the roller 14 is limited between the assembling groove 18 and the matching notch 5; when the pressing portion 15 moves up and down, the pressing portion 16 is driven to rotate around the roller 14, and the lower end of the pressing portion 16 drives the adjuster assembly 17 to work. The number of the action parts 16 is two, the two action parts 16 correspond to the rollers 14 one by one, the two action parts 16 are respectively distributed on the left side and the right side of the pressing part 15, and the action parts 16 are workpieces with sector ring-shaped sections. The pressing portion 15 in this embodiment is in the shape of a rod as a whole.

In order to seal the process hole (6) and prevent the roller 14 from sliding left and right greatly, in the embodiment, a seal seat 19 is installed in the process hole (6), the seal seat 19 comprises an insertion part 20 inserted in the process hole (6) and a limiting part 21 installed in the installation groove 8, the limiting part 21 limits the outer end of the roller 14, the projection of the limiting part 21 along the axial direction of the roller 14 covers part or all of the projection of the roller 14 along the axial direction of the roller 14, so that the left and right movement of the roller 14 is limited, in the embodiment, the seal seat 19 is provided with an elastic rubber seal, and the projection of the limiting part 21 along the axial direction of the roller 14 covers the whole projection of the roller 14 along the axial direction of the roller 14. The cross-sectional area of the acting part 16 and the roller 14 can be ensured, and the condition that the acting part 16 is stressed unevenly due to large left-right sliding of the roller 14 and the damage of parts is avoided.

Because the contact surface of the lower roller 14 and the caliper body 1 is a cambered surface, the contact force per unit area is smaller because the contact surface is replaced by the surface contact from the line contact, so that the roller 14 can roll, and the resistance is reduced.

The above description mainly refers to the assembly structure of the pressure arm assembly and the caliper body 1, and other main parts of the air disc brake will be described below, so that the public can more clearly understand how to implement the technical solution.

As shown in fig. 1 to 15, the brake further includes an adjuster assembly 17 and a supporting base 32 mounted on the lower end surface of the first assembly chamber 2, the lower end of the pressure arm 13 is supported on the adjuster assembly 17, the adjuster assembly 17 is supported on the supporting base 32 by a return spring 33, the adjuster assembly 17 is provided with a supporting groove 43, a bearing assembly 42 is mounted in the supporting groove 43, the lower end of the action part 16 is supported on the bearing assembly 42, the upper end of the action part 16 is provided with an assembly groove 18 for mounting the roller 14, and the roller 14 is limited between the assembly groove 18 and the matching notch 5; when the pressing portion 15 moves up and down, the pressing portion 16 is driven to rotate around the roller 14, and the lower end of the pressing portion 16 drives the adjuster assembly 17 to work. The adjusting rod of the adjuster assembly 17 is matched in the shaft hole 3, the supporting grooves 43 on the adjuster assembly 17 correspond to the acting ends of the pressure arms one by one, so the number of the supporting grooves 43 is two, the supporting grooves 43 are distributed on two sides of the adjusting rod, and the supporting grooves 43 are processed into arc-shaped grooves in order to be matched with the acting part 16 of the pressure arm 13. The upper end of the adjuster assembly 17 is limited by the pressure arm 13, and the lower end is limited by the supporting base pressing plate 32. The supporting seat press plate 32 is fixed on the lower end surface of the first assembling cavity 2 by bolts or other fixing members, and the supporting seat press plate 32 is provided with an extension opening 52 for the adjuster to extend downwards, so that the lower end of the adjuster assembly 17 is a braking baffle plate with an acting end acting on the lower side of the lower supporting seat press plate 32 through the extension opening 52. Wherein return spring 33's lower extreme is spacing on supporting seat clamp plate 32, and the upper end is spacing on adjuster assembly 17 to carry out self return after adjuster assembly 17 pushes down, in order to guarantee the stable installation of spring, be provided with the spacing mouth 91 that is used for spacing return spring 33 on supporting seat clamp plate 32, return spring 33 packs into in spacing mouth 91. Simultaneously return spring 33's number sets up to two, distributes on the left side and the right side of adjusting lever, and even return prevents slope or jamming.

The caliper body 1 is integrally formed with a support frame 34 at the lower end of the first assembling cavity 2, the support frame 34 can also be expressed as an installing frame, an assembling opening 35 is arranged in the support frame 34, and the assembling opening 35 penetrates through the rear side of the caliper body 1. The assembly port 35 is communicated with the first assembly cavity 2, the left side and the right side of the assembly port 35 are provided with the column pin holes 30, and the assembly port 35 is communicated with the column pin holes 30; the mount port 35 is mounted with the bracket 36 therein, wherein a support table 44 is formed at a lower end of the mount port 35, and the bracket 36 is supported on the support table 44. The pin 50 assembly is installed in the pin hole 30, the upper end of the bracket 36 is fixedly installed with the pin 50 assembly, the bracket 36 is provided with a pin positioning hole 82, and the lower end of the pin 30 is installed in the pin positioning hole 82. In this embodiment, the pin 50 and the bracket 36 are fixed by bolts. The back of the assembling opening 35 is provided with a pressing plate assembly 37 which is arranged in the vertical direction, the upper end of the pressing plate assembly 37 is connected with the supporting base pressing plate 32, a pressing plate socket 53 is arranged on the supporting base pressing plate 32, and the pressing plate assembly 37 is inserted into the pressing plate socket 53. The lower end of the pressure plate assembly 37 fixes the pressure plate assembly 37 on the caliper body 1 through a connecting piece 51, and the connecting piece 51 is a locking bolt in the embodiment.

The brake obviously also comprises a brake block and a retaining spring 38 for mounting the brake block, a mounting opening 60 for assembling the brake block is formed in the bracket 36, the shape of the mounting opening 60 is matched with that of a matching part of the brake block, so that the brake block can stably axially slide in the mounting opening 60 without shaking, a guide groove 61 is formed in the mounting opening 60, and a brake push plate 41 can vertically slide along the guide groove 61. The brake shoes include an upper brake shoe 39 and a lower brake shoe 40, the upper brake shoe 39 and the lower brake shoe 40 being mounted in a mounting opening 60 of the bracket 36 and being axially slidable along the bracket 36. A brake push plate 41 is arranged between the upper brake block 39 and the adjuster assembly 17, the brake push plate 41 is abutted against the lower end of the adjuster assembly 17, the brake push plate 41 is arranged on the lower side of the supporting seat press plate 32, the lower end face of the brake push plate 41 is contacted with the upper brake block 39, and the adjuster assembly 17 moves downwards to push the brake press plate and the upper brake block 39 to move downwards.

In this embodiment, the upper brake block 39 and the brake push plate 41 are both provided with a retaining spring 38, the retaining spring 38 is cooperatively mounted on the pressure plate assembly 37, and the upper brake block 39 slides up and down to drive the retaining spring 38 to move up and down along the pressure plate assembly 37. Wherein, keep spring 38 for the whole leaf spring spare that is "nearly" style of calligraphy, keep the flexion 49 card of spring 38 to establish on clamp plate assembly 37 along clamp plate assembly 37 up-and-down slip, flexion 49 forms the bayonet socket, and the both sides of flexion 49 are joint portion, are provided with joint mouth 45 in the joint portion, and the rear side of going up brake block 39 and braking push pedal 41 all is provided with two joint ears 46, and joint ear 46 joint is spacing in joint mouth 45. The retaining spring 38 having the same structure is connected to the back of the lower brake shoe 40 in this embodiment, and the connection structure between the lower brake shoe 40 and the retaining spring 38 is the same as the connection structure between the upper brake shoe 39 and the retaining spring 38.

In this embodiment, the pressing plate assembly 37 includes an inner cable protection plate 47 and an outer pressing plate 48, the bent portions 49 of the holding springs 38 are clamped on the cable protection plate 47 and are pressed by the outer pressing plate 48, and the holding springs 38 can slide between the outer pressing plate 48 and the cable protection plate 47.

The working process of the air disc brake is as follows: the pressing end of the pressure arm 13 moves downwards by pressing the pressure arm 13 through the pressing hole 31, the action part 16 is driven to rotate upwards around the roller 14, the lower side of the action part 16 acts on the adjuster assembly 17 through the bearing assembly 42, the adjuster assembly 17 moves downwards and compresses the return spring 33, the brake push plate 41 and the upper brake block 39 slide downwards under the pushing of the adjuster assembly 17, the caliper body 1 slides along the pin, the distance between the caliper body and the lower brake block 40 is reduced, the upper brake block 39 and the lower brake block 40 clamp the brake disc to realize braking, after the braking is finished, the adjuster assembly 17 returns to the initial position under the action of the return spring 33, and the upper brake block 39 and the brake push plate 41 return to the initial position under the action of the centrifugal force outwards from the brake disc.

According to the embodiment, the structure of the clamp body 1 is designed, and the arc-shaped groove matched with the roller 14 with high precision can be formed in the clamp body 1 by creatively adopting an external processing method, so that the processing cost is greatly saved compared with the traditional integrated forming method, and the processing efficiency is also high. Meanwhile, the area of the contact part of the matching notch 5 and the roller 14 is increased, so that the contact force is reduced, and the roller 14 can roll more conveniently and simply. Meanwhile, the clamp body 1 is convenient to clamp and position, and the position accuracy between the processing parts of the clamp body 1 is ensured. Meanwhile, the clamp body 1 with the structure is convenient for assembling parts of the air pressure disc brake. And the pressure arm 13 mechanism assembled by the pliers body 1 has the advantages of simple assembly and small contact force, because the rotating shaft is assembled by adopting the arc-shaped matching notch 5, the contact force between the roller 14 and the stress part 4 is greatly reduced, the assembly of the part of structure is greatly simplified, the left end and the right end of the roller 14 are limited, the roller 14 can be ensured not to be separated from the action part 16, and the whole stress of the action part 16 is more balanced.

Meanwhile, the pneumatic disc brake of the embodiment has the advantages that the components are easy to assemble, and enough assembly space is provided for assembly during assembly. Meanwhile, the assembly precision of all parts of the whole clamp body 1 is reliable, and the brake block slides up and down stably. The air disc brake is stable in braking and quick and reliable in returning, and meanwhile, the roller 14 of the pressure arm assembly moves in a rolling mode, and the roller 14 is in surface contact with the caliper body 1, so that the air disc brake cannot cause large load to the local part of the caliper body 1, the service life of the air disc brake is prolonged, and the failure rate is reduced.

Example 2

For clarity, how the pliers body 1 of the embodiment 1 is clamped during machining will be described in how the pliers body 1 of the embodiment is machined.

Firstly, 6 degrees of freedom of the caliper body 1 need to be limited in the clamping process. The clamping process utilizes a horizontal machining center for machining. First assembly chamber 2 includes to the bellied second chamber 9 in back, and the left and right sides setting in first assembly chamber 2 is formed with location platform 10, and location platform 10 place highly is less than the height at first assembly chamber 2 up end place, is formed with the column pin hole 30 on the location platform 10, and the outside of column pin hole 30 is provided with location shoulder 11, and location shoulder 11 integrated into one piece is on location platform 10, and the shaping has the strengthening rib between column pin hole lateral wall and the pincers body 1. And the left side and the right side of the lower end back of the forceps body 1 are both provided with a positioning groove 12, and the inner side surface and the bottom surface of the positioning groove 12 are positioning surfaces. By adopting the structure, the limitation of 6 degrees of freedom of the clamp body can be realized during clamping, the clamp body can be conveniently machined on a horizontal machining center, and the accuracy of the size of each position is ensured. The positioning groove 12 is in a tetrahedron shape, so that the positioning groove 12 can limit in two directions, and a forming process is optimized; the lower end of the front end face of the pliers body 1 is provided with a plane used for clamping and serving as a pressing point.

The following description is made with reference to fig. 5 for the upper, lower, left, right, front and rear positions, and since a horizontal machining center is used, fig. 5 shows an initial state when the caliper body 1 is clamped.

Rotation and up-down direction limiting: the upper end surface of the positioning groove 12, the lower side surface of the positioning shoulder 11 and two surfaces which are symmetrical at the other side are used as positioning surfaces, and the end surface of the upper side caliper body 1 of the positioning groove 12, the upper end surface of the positioning shoulder 11 and points which are symmetrical on the two end surfaces at the other side are used as pressing points; the rotation and the limit in the up-down direction are realized;

limiting in the rotating and left-right directions: the left side surface of the positioning groove 12 and the left side surface of the positioning groove 12 on the other symmetrical side are positioning surfaces, and the end surface of the left end positioning table 10 and the point on the end surface of the positioning table 10 chopped into the other side are selected as compaction points; the rotation and the limit in the left and right directions are realized;

rotation and front-back direction limiting: the front end face and the rear end face of the outer side wall of the second cavity 9 are used as positioning faces to realize rotation and limiting in the front-rear direction.

And after the positioning is finished, machining the shaft hole 3, the pin hole 30 and the process hole 6 in the horizontal machining center, and machining the matching notch 5 and the related end face from the process hole 6.

Example 3

Different from the embodiment 1, the part of the side line of the section of the process hole 6 and the side line of the section of the opening of the assembling groove 18 are overlapped along the axial center line of the opening of the assembling groove 18, so that the processing precision can be ensured.

Example 4

Different from the embodiment 1, during processing, only the process holes 6 on two sides need to be processed respectively to process two matching notches 5, so that the length of the cutter is reduced, the bounce of the cutter is reduced, the rigidity of the cutter is increased, and the precision of the matching notches 5 is ensured.

Example 5

This embodiment is different from embodiment 1 in that: the number of the stress parts 4 is two, and the middle part of the stress part 4 is provided with an assembling space for assembling the pressure arm component of the adjuster assembly 17.

Example 6

This embodiment is different from embodiment 1 in that: the projection of the stopper portion 21 in the axial direction of the roller 14 covers the portion of the roller 14 projected in the axial direction of the roller 14.

Example 7

This embodiment is different from embodiment 1 in that: the holding spring 38 has 2 snap interfaces 45 distributed on both sides of the pressure plate assembly 37.

Example 8

This embodiment is different from embodiment 1 in that: the number of the clip interfaces 45 of the holding spring 38 is 2, and the clip interfaces 45 are symmetrically arranged along the pressing plate assembly 37.

In short, the above description is only a preferred embodiment of the present invention, and all the equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the scope of the present invention.

Claims (10)

1. Integral atmospheric pressure disc brake characterized in that: the clamp comprises an integrally formed clamp body (1), a first assembly cavity (2) is formed in the clamp body (1), a pressure arm (13) assembly is installed in the first assembly cavity (2), a shaft hole (3) and a pressing hole (31) are formed in the upper end face of the first assembly cavity (2), the pressure arm (13) assembly comprises a pressure arm (13) and a rolling shaft (14), a stress part (4) is formed in the first assembly cavity (2), a matching notch (5) matched with the rolling shaft (14) is formed in the lower end face of the stress part (4), the lower end of the circumferential side face of the rolling shaft (14) is in contact with the pressure arm (13), the upper end of the circumferential side face of the rolling shaft (14) is matched in the matching notch (5), and the axis of the matching notch (5) is perpendicular to the axis of the shaft hole (3); a process hole (6) is formed in the side face of the first assembling cavity (2), and the projection of the matching notch (5) along the extending direction of the matching notch (5) falls into the projection area of the process hole (6) along the axial direction of the matching notch (5); the brake also comprises an adjuster assembly (17) and a supporting seat pressing plate (32) arranged on the lower end face of the first assembly cavity (2), the lower end of the pressure arm (13) is supported on the adjuster assembly (17), and the adjuster assembly (17) is supported on the supporting seat pressing plate (32) through a return spring (33).

2. The integrated air disc brake of claim 1, wherein: the number of the process holes (6) is two, the two process holes are respectively arranged on the left side wall of the first assembly cavity (2) and the right side wall of the first assembly cavity (2), and the process holes (6) and the matching notches (5) are arranged coaxially; the number of the matching notches (5) is two, and the matching notches are distributed on the left side and the right side of the shaft hole (3); one end of each matching notch (5) close to the shaft hole (3) is provided with a limiting surface (7) used for limiting the rolling shaft (14), and one end far away from the shaft hole (3) is communicated with the technical hole (6) in a through state.

3. An integral pneumatic disc brake according to claim 1 or 2, wherein: the number of the stress parts (4) is two, the stress parts are distributed on two sides of the axis of the shaft hole (3), and the lower end surface of each stress part (4) is provided with a matching notch (5); an installation groove (8) is formed between the stress part (4) and the left side face and the right side wall of the first assembly cavity (2), and the fabrication holes (6) and the assembly groove (18) are distributed on two sides of the installation groove (8).

4. An integral pneumatic disc brake according to claim 1 or 2, wherein: the cross section of the matching notch (5) is arc-shaped.

5. The integrated air disc brake of claim 1, wherein: the clamp body (1) is integrally formed with a support frame (34) at the lower end of a first assembly cavity (2), an assembly opening (35) is arranged in the support frame (34), the assembly opening (35) is communicated with the first assembly cavity (2), column pin holes (30) are arranged on the left side and the right side of the assembly opening (35), and the assembly opening (35) is communicated with the column pin holes (30); install support (36) in assembly opening (35), install in pin hole (30) pin (50) subassembly, the upper end and the pin (50) unit mount of support (36) are fixed, and the back of assembly opening (35) is installed and is clamp plate subassembly (37) that the direction set up from top to bottom, and the upper end and the supporting seat clamp plate (32) of clamp plate subassembly (37) link to each other, and the lower extreme of clamp plate subassembly (37) passes through connecting piece (51) to be fixed clamp plate subassembly (37) on pincers body (1).

6. The integrated air disc brake of claim 5, wherein: the brake shoe comprises an upper brake block (39) and a lower brake block (40), the upper brake block (39) and the lower brake block (40) are installed in the installation opening (60) of the support (36) and can slide along the support (36), a brake push plate (41) is arranged between the upper brake block (39) and the adjuster assembly (17), an extension opening (52) used for adjusting the seat press plate to extend downwards is arranged on the support press plate (32), the brake push plate (41) is abutted to the lower end of the adjuster assembly (17), the brake push plate (41) is arranged on the lower side of the support press plate (32), the lower end face of the brake push plate (41) is in contact with the upper brake block (39), and the adjuster assembly (17) moves downwards to push the brake push plate and the upper brake block (39) to move downwards.

7. The integrated air disc brake of claim 6, wherein: the upper brake block (39) and the brake push plate (41) are both provided with a retaining spring (38), the retaining spring (38) is installed on the pressure plate assembly (37) in a matching mode, and the upper brake block (39) drives the retaining spring (38) to move up and down along the pressure plate assembly (37) when sliding up and down.

8. The integrated air disc brake of claim 1, wherein: the pressure arm (13) comprises a pressing part (15) and an acting part (16) connected with the pressing part (15), a supporting groove (43) is arranged on the adjuster assembly (17), a bearing assembly (42) is installed in the supporting groove (43), the lower end of the acting part (16) is supported on the bearing assembly (42), an assembling groove (18) for installing a rolling shaft (14) is formed in the upper end of the acting part (16), and the rolling shaft (14) is limited between the assembling groove (18) and the matching notch (5); when the pressing part (15) moves up and down, the acting part (16) can be driven to rotate around the rolling shaft (14), and the lower end of the acting part (16) drives the adjuster assembly (17) to work.

9. The integrated air disc brake of claim 7, wherein: the number of the action parts (16) is two, and the action parts (16) are workpieces with sector ring-shaped sections; a sealing seat (19) is installed in the technical hole (6), the sealing seat (19) comprises an inserting part (20) inserted in the technical hole (6) and a limiting part (21) installed in the installation groove (8), the limiting part (21) limits the outer end of the rolling shaft (14), and the projection of the limiting part (21) along the axial direction of the rolling shaft (14) covers part or all of the projection of the rolling shaft (14) along the axial direction of the rolling shaft (14).

10. The integrated air disc brake of claim 8, wherein: the sealing seat (19) is in a step shape, and the cross section area of the limiting part (21) is larger than that of the inserting part (20).

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