Fixed hydraulic disc brake caliper

Abstract

The utility model discloses a fixed hydraulic disc brake caliper which comprises a caliper body assembly and a friction plate assembly arranged in the caliper body assembly, the friction plate assembly comprises a pair of friction plate bodies which are oppositely arranged, and the caliper body assembly comprises an inner caliper body and an outer caliper body which are matched with each other. The inner caliper body is provided with a mounting hole for mounting and fixing the whole brake caliper, the inner caliper body and the outer caliper body are respectively provided with a driving cylinder for driving the friction plate body on the corresponding side to move, and the inner caliper body and the outer caliper body are respectively provided with a return elastic structure for returning the friction plate body on the corresponding side. The fixed hydraulic disc type brake caliper is reasonable in structural design, can realize strong torque and high braking force, improves driving safety, cancels a mounting bracket, is provided with a mounting hole and is fixed on the mounting plate, four cylinders on the two sides are hydraulically and simultaneously clamp the brake disc, stable braking is realized, and the fixed hydraulic disc type brake caliper can be suitable for heavy-load mechanical equipment.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle braking, in particular to a fixed hydraulic disc brake caliper. Background Art

[0002] At present, the hydraulic disc brake calipers applied to agricultural machinery equipment or other vehicles all use single-side hydraulic cylinders for braking. The fixed bracket and the brake caliper body are split-type. The clearance between the friction plate and the brake disc is eliminated by the sliding fit of the guides on both sides fixed on the brake caliper and the bracket to achieve braking.

[0003] This structure is applicable to miniature or small vehicles and agricultural machinery with a small movement range and a small braking torque. With the rapid development of agricultural mechanization, the current market has higher and higher requirements for the load capacity and braking performance of agricultural machinery assemblies. The thickness of the brake disc has doubled, and the clearance between the two friction plates has increased accordingly. For the traditional sliding brake caliper of the caliper body and the bracket, due to the increased sliding range, jamming or non-return phenomena may occur.

[0004] For example, a hydraulic double-cylinder brake caliper assembly disclosed in Patent CN107917158A includes a caliper body with two hydraulic chambers. The bottoms of the two hydraulic chambers are connected, and pistons are respectively arranged inside. It also includes a fixed bracket. The inner friction plate and the outer friction plate are connected by a yoke spring on the fixed bracket. The friction surfaces of the two friction plates face each other and are in clearance fit with the brake disc. Pin holes are arranged on both sides of the fixed bracket. The pin shafts slidingly matched with the pin holes are connected to the lugs outside the caliper body through bolts. For the sliding structure of the bracket, jamming or non-return phenomena are likely to occur in heavy-duty large-scale products, and it cannot be applied to agricultural large-scale mechanical vehicle equipment. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a fixed hydraulic disc brake caliper, which realizes strong torque, high braking force, and stable braking without easy jamming.

[0006] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows:

[0007] The fixed hydraulic disc brake caliper includes a caliper body assembly and a friction plate assembly arranged inside the caliper body assembly. The friction plate assembly includes a pair of friction plate bodies arranged oppositely. The caliper body assembly includes a matched inner caliper body and outer caliper body. The inner caliper body is provided with an installation hole for the installation and fixation of the entire brake caliper. Driving cylinders for driving the corresponding side friction plate bodies to move are arranged on both the inner caliper body and the outer caliper body. Return elastic structures for the corresponding side friction plate bodies to return are arranged on both the inner caliper body and the outer caliper body.

[0008] Furthermore:

[0009] An extension part is arranged at the lower part of the inner caliper body, and the installation hole is arranged on the extension part.

[0010] The tops of the inner clamp body and the outer clamp body are provided with a hollow structure, and dust covers are provided above the hollow structures corresponding to the tops of the inner clamp body and the outer clamp body.

[0011] The return elastic structure includes a movable bolt structure provided on the corresponding side clamp body. The inner end of the bolt structure is connected to the friction plate body on the corresponding side, and a return spring is provided outside the corresponding clamp body on the bolt structure.

[0012] A connecting rod is provided between the tops of the inner clamp body and the outer clamp body, and a guide hole for movably cooperating with the connecting rod is provided on the friction plate assembly.

[0013] An oil inlet is provided on the inner clamp body or the outer clamp body. The drive cylinders on the inner clamp body and the drive cylinders on the outer clamp body are connected through a series of through holes that cooperate with each other between the inner clamp body and the outer clamp body, and the oil inlet is connected to the series of through holes.

[0014] An adjustable adjusting nut is provided at the outer end of the bolt structure, and the return spring is located between the outside of the clamp body and the adjusting nut.

[0015] The drive cylinders on each side of the clamp body are two hydraulic cylinders connected in parallel and communicating with each other.

[0016] The hydraulic cylinder includes a cylinder body and a piston. A rectangular ring groove is provided in the cylinder body, and a rectangular sealing ring acting on the outer edge of the piston is provided in the rectangular ring groove.

[0017] The bottoms of the two cylinder bodies on each side of the clamp body are connected through two inclined holes to achieve a series connection setting.

[0018] Compared with the prior art, the present invention has the following advantages:

[0019] The fixed hydraulic disc brake caliper has a reasonable structural design, can achieve strong torque and high braking force, improve driving safety, cancel the mounting bracket, and the caliper body is fixed on the mounting plate with its own mounting holes. The four hydraulic cylinders on both sides clamp the brake disc simultaneously, realizing stable braking and being applicable to heavy-duty mechanical equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The following briefly describes the content expressed by each drawing in this specification and the marks in the drawings:

[0021] Figure 1 It is a front view schematic diagram of the brake caliper of the present invention.

[0022] Figure 2 It is a bottom view schematic diagram of the brake caliper of the present invention.

[0023] Figure 3 It is a side view schematic diagram of the brake caliper of the present invention.

[0024] Figure 4 AlongFigure 3 Schematic diagram of A-A cross-section in [the figure].

[0025] Figure 5 For along Figure 3 Schematic diagram of B-B cross-section in [the figure].

[0026] Figure 6 and Figure 7 Schematic three-dimensional structure diagram of the brake caliper of the present utility model.

[0027] In the figure:

[0028] 1. Inner caliper body, 2. Outer caliper body, 3. Through-hole sealing ring, 4. Split pin, 5. Rectangular sealing ring, 6. Steel ball, 7. Allen bolt, 8. Allen bolt with semi-circular head, 9. Hexagonal nut, 10. Bleeder screw, 11. Bleeder screw cap, 12. Spring seat, 13. Flat washer, 14. Positioning block, 15. Dust cover, 16. Piston, 17. Connecting rod, 18. Friction plate assembly, 19. Dust cover, 20. Hexagon bolt, 21. Cross-slot bolt, 22. Return spring, 23. Thread plug. Specific embodiments

[0029] The following will further describe in detail the specific embodiments of the present utility model by describing the embodiments with reference to the accompanying drawings.

[0030] As Figures 1 to 7 shown, the fixed hydraulic disc brake caliper includes a caliper assembly and a friction plate assembly 18 provided in the caliper assembly. The friction plate assembly includes a pair of friction plate bodies arranged oppositely; the caliper assembly includes a cooperating inner caliper body 1 and outer caliper body 2. The inner caliper body is provided with an installation hole for the entire brake caliper to be installed and fixed, eliminating the installation bracket. The caliper has its own installation hole and is fixed on the installation plate; that is, the traditional installation bracket is omitted, and the installation hole is designed on the inner caliper body. The entire brake caliper is firmly installed on the installation plate, facilitating the installation function, reducing the caliper shaking, and eliminating the jamming or non-return phenomenon caused by the sliding fit between the caliper and the bracket.

[0031] A pair of friction plate bodies includes one friction plate arranged inside the inner caliper body and the other friction plate arranged inside the outer caliper body; both the inner caliper body and the outer caliper body are provided with drive cylinders for driving the corresponding side friction plate body to move. The inner and outer hydraulics relatively clamp the brake disc to achieve super torque and shear force, and the braking is more stable.

[0032] Both the inner clamp body and the outer clamp body are provided with a return elastic structure for the return of the friction plate body on the corresponding side; preferably, the return elastic structure includes a movable bolt structure provided on the corresponding side clamp body, the inner end of the bolt structure is connected to the friction plate body on the corresponding side, and a return spring 22 is provided outside the corresponding clamp body on the bolt structure; under the action of the inner and outer clamp return springs, the friction plate is pulled to the piston end face and returns to the initial state, avoiding abnormal non-return situations, and the operation is stable and reliable.

[0033] The inner clamp body and the outer clamp body are fixedly connected by a long bolt, and the long bolt is an inner hexagon bolt 7; the lower part of the inner clamp body is provided with an extension part, and the mounting hole is provided on the extension part; the inner and outer clamps are processed separately and combined into one body, which is conducive to processing; directly fixed and installed, reducing the shaking of the clamp body.

[0034] The tops of the inner clamp body and the outer clamp body are provided with a hollow structure, and a dust cover 19 is provided above the corresponding hollow structure at the tops of the inner clamp body and the outer clamp body. The dust cover is an iron cover and is fixed by a cross-slot bolt 21. There is a certain gap between the edge of the dust cover and the top of the clamp body, which has a good dust-proof effect and does not affect heat dissipation.

[0035] A connecting rod 17 is provided between the tops of the inner clamp body and the outer clamp body. The friction plate assembly is provided with a guide hole that movably cooperates with the connecting rod, and the end of the connecting rod is positioned by an opening pin 4.

[0036] An oil inlet and a bleed screw 10 are provided on the inner clamp body or the outer clamp body. The drive cylinders on the inner clamp body and the drive cylinders on the outer clamp body are connected through a series of through holes that cooperate between the inner clamp body and the outer clamp body. The oil inlet is connected to the series of through holes, and a steel ball 6 and a series of through hole seals 3 are provided corresponding to the series of through holes; the drive cylinders on each side of the clamp body are two hydraulic cylinders connected in parallel; the bottoms of the two cylinders on each side of the clamp body are connected through two inclined holes to achieve a series connection. A threaded plug 23 is provided corresponding to the oil inlet to prevent water vapor from entering before installation. One oil inlet is used to supply liquid to the four cylinders of the inner and outer brake calipers simultaneously, and the braking is stable and reliable. Preferably, the oil inlet, the bleed screw 10, and the bleed screw cap 11 are all provided on the inner clamp body, and the structure is compact.

[0037] An adjustable adjusting nut is provided at the outer end of the bolt structure. The return spring is located between the outside of the clamp body and the adjusting nut, and the return force can be adjusted through the adjusting nut; the bolt structure is an outer hexagon bolt 20 or a semi-circular head inner hexagon bolt 8, the inner end is connected to the friction plate through a positioning block 14, the adjusting nut is a hexagon nut 9, and a spring seat 12 and a flat washer 13 are provided corresponding to the end of the return spring.

[0038] The hydraulic cylinder includes a cylinder block and a piston. A rectangular ring groove is provided inside the cylinder block, and a rectangular sealing ring 5 acting on the outer edge of the piston is provided inside the rectangular ring groove. Pushed by the hydraulic pressure, the rectangular ring piston is pushed by the piston to move the dynamic friction plate forward to achieve the braking function. After the pressure is released, the piston retreats a small gap by virtue of the self-resetting function of the rectangular sealing ring to achieve the gap control function between the friction plate and the brake disc.

[0039] The fixed hydraulic disc brake caliper of the utility model has a reasonable structural design, can achieve strong torque and high braking force, improve driving safety, cancel the mounting bracket, and the caliper body is fixed on the mounting plate with its own mounting holes. The double-sided four-cylinder hydraulic pressure simultaneously clamps the brake disc to achieve stable braking and can be applied to heavy-duty mechanical equipment.

[0040] The preferred specific example of the utility model is as follows:

[0041] 1) For the convenience of processing, the brake caliper is designed to be composed of two inner and outer caliper bodies.

[0042] 2) An iron dust cover is provided above the brake caliper assembly. Two bolt fixing holes are provided on the dust cover. A threaded hole is respectively provided on the inner and outer caliper bodies. The iron dust cover is connected to the inner and outer caliper bodies through two semi-circular head bolts.

[0043] 3) The brake caliper assembly includes an inner caliper body and an outer caliper body. Two mounting holes, a bleeder screw hole, an oil inlet hole, and two piston cylinders are provided on the inner caliper body. The bleeder screw hole is located on one side of the mounting hole on the inner caliper body and is parallel to the mounting hole. An inclined hole with an angle of 40° with the cylinder hole is provided at the bottom of the piston cylinder on one side of the bleeder screw hole of the caliper body and is communicated with the bleeder screw hole. The liquid inlet hole is located on the other side of the inner caliper body and is communicated with the bottom of the other piston cylinder on the inner caliper body.

[0044] 4) Inclined holes with an angle of 40° with the cylinder hole are provided at the inner bottom of the two piston cylinders on the inner caliper body to communicate the two piston cylinders.

[0045] 5) Rectangular ring grooves are provided in both piston cylinders on the inner caliper body. The rectangular ring grooves are matched with a rectangular sealing ring and a rectangular ring piston. Pushed by the hydraulic pressure, the rectangular ring piston is pushed by the piston to move the dynamic friction plate forward to achieve the braking function. After the pressure is released, the piston retreats a small gap by virtue of the self-resetting function of the rectangular sealing ring to achieve the gap control function between the friction plate and the brake disc.

[0046] 6) Dust cover mounting grooves are provided at both ends of the two piston cylinders on the inner caliper body. One end of the corrugated dust cover is matched with the dust cover mounting groove on the inner caliper body, and the other end is matched with the mounting groove of the rectangular ring piston, which can achieve the dust-proof effect when the piston moves back and forth freely.

[0047] 7) On both sides of the inner clamp body mounting surface, there are through holes connected to the outer clamp body. On the piston cylinder end surface of the inner clamp body, there are friction plate positioning holes. After the inner and outer clamps are assembled, the inner and outer friction plates are positioned through a connecting rod. One end of the connecting rod is provided with an opening pin hole and an opening pin. After assembly, the friction plate can move axially along the piston cylinder;

[0048] 8) On the piston cylinder end surface of the inner clamp body, there are return spring bolt holes. The friction plate is connected to the inner clamp body through hexagon bolts. The other end of the bolt is provided with a return spring. One end of the return spring is provided with a spring seat and an M6 hexagon nut to prevent loosening;

[0049] 9) On both sides of the inner clamp body mounting surface between the through holes, there is a series through hole at a 40° angle with the piston cylinder, and it is connected to a 40° inclined hole that is connected to the bottom of the piston cylinder, the liquid inlet hole, and the air release hole;

[0050] 10) At the end of the series through hole at a 40° angle with the piston cylinder on the inner clamp body mounting surface near the air release screw, there is a hole. Inside the hole, there is a steel ball. Above the hole, there is a deep hole. Inside the deep hole, there is a sealing ring (for sealing the mounting surface when the inner and outer clamps are combined);

[0051] 11) On the inner bottom of both piston cylinders on the outer clamp body, there are inclined holes at a 40° angle with the cylinder hole to communicate the two piston cylinders. On the outer bottom of both piston cylinders on the outer clamp body, there are inclined holes at a 40° angle with the cylinder hole to communicate the series through holes between the two piston cylinders and the M12 threaded holes on both sides of the outer clamp body mounting surface;

[0052] 12) Inside both piston cylinders of the outer clamp body, there are rectangular ring grooves. The rectangular ring grooves are fitted with rectangular sealing rings and rectangular ring pistons. The rectangular ring pistons are pushed by oil pressure. The pistons push the moving friction plates forward to achieve the braking function. After the pressure is released, the pistons retreat a small gap by virtue of the self - reset function of the rectangular sealing rings to achieve the function of controlling the gap between the friction plates and the brake disc;

[0053] 13) At both ends of the two piston cylinders of the outer clamp body, there are dust cover mounting grooves. One end of the corrugated dust cover 15 is fitted with the dust cover mounting groove of the inner clamp body, and the other end is fitted with the mounting groove of the rectangular ring piston, which can achieve the dust - proof function when the piston 16 moves back and forth freely;

[0054] 14) On both sides of the outer clamp body mounting surface, there are threaded holes connected to the inner clamp body. Since there is no position for the mounting hole on the piston cylinder end surface of the outer clamp body, there is an insert block on the casting. One end of the insert block is fixed to the outer clamp body mounting surface with a countersunk head socket head cap screw, and the other end is provided with a friction plate positioning hole. After the inner and outer clamps are assembled, the inner and outer friction plates are positioned through a connecting rod. One end of the connecting rod is provided with an opening pin hole and an opening pin. After assembly, the friction plate can move axially along the piston cylinder;

[0055] 15) A return spring bolt hole is provided on the piston cylinder end face of the outer clamp body. The friction plate is connected to the inner clamp body through a hexagon bolt. A return spring is provided at the other end of the bolt, and a spring seat and an M6 hexagon nut are provided at one end of the return spring to prevent loosening.

[0056] 16) On the installation surface of the outer clamp body, there is a through hole with a 40° angle with the piston cylinder between the two M12 threaded holes on both sides, which is communicated with the 40° inclined hole on the outside of the bottom of the piston cylinder.

[0057] 17) At the end of the through hole with a 40° angle with the piston cylinder on the side of the installation surface of the outer clamp body close to the liquid inlet hole, there is a hole, a steel ball is provided in the hole, a deep hole is provided above the hole, and a sealing ring is provided in the deep hole (for sealing the installation surface when the inner and outer clamps are combined).

[0058] The advantages of this patent application are as follows: This fixed hydraulic brake caliper is processed and assembled in a split manner with the inner and outer clamps, which is conducive to processing. The inner and outer four cylinders of this fixed hydraulic brake caliper communicate with each other through through holes, sharing a bleed port and a liquid inlet, reducing the tubing layout; the mounting holes are designed on the inner clamp body, and the entire brake caliper is firmly installed on the mounting plate, facilitating the installation function, reducing the shaking of the caliper body, and eliminating the jamming or non-return phenomenon caused by the sliding fit between the caliper body and the bracket. The inner and outer hydraulic pressure clamp the brake disc, achieving super strong torque and shear force, and the braking is more stable; the inner and outer four cylinders of the caliper hydraulically clamp the brake disc, achieving super strong torque and shear force, and the braking is more stable; it solves the problem of brake lag, improves the service life and driving safety. This fixed hydraulic brake caliper is divided into left and right caliper assemblies. The inner and outer clamp rough castings are universal, and the left and right parts are distinguished during processing, and the assembly parts are universal.

[0059] Brake principle description:

[0060] 1. When the brake pedal is depressed, the brake fluid is output from the master cylinder through the connecting tubing and enters the liquid inlet of the brake caliper, and enters the inner and outer brake caliper cavities from the liquid inlet. The four cylinders in the cavity communicate with each other through the through holes, realizing that one liquid inlet can supply liquid to the four cylinders of the inner and outer brake calipers simultaneously.

[0061] 2. After the brake fluid enters the cavity, under the sealing action of the rectangular sealing ring, pressure is generated to push the piston forward.

[0062] 3. The brake caliper is fixed on the mounting plate through two mounting holes on the inner brake caliper body. The piston moves forward to push the friction plate forward, making the friction plate fit the brake disc. No matter which one of the four cylinders contacts the brake disc first, due to the communication of the four cylinders, the liquid will quickly fill the remaining cylinders under the reaction force, so that the inner and outer friction plates can simultaneously fit both sides of the brake disc.

[0063] 4. When the brake fluid in the brake caliper cavity is full (the two friction plates contact the brake disc), the pressure in the cavity rises, and the two friction plates firmly hold the brake disc to achieve the braking effect.

[0064] 5. Release the brake pedal, and the pressure is instantly released. Under the automatic reset function of the rectangular ring, the piston returns to its original position, and the excess brake fluid in the caliper cavity is returned to the brake fluid reservoir through the oil pipe. Under the action of the inner and outer caliper return springs, the friction pads are pulled to stick to the piston end face and return to the initial state.

[0065] The above is only a description of the preferred embodiments of the present invention, and the above technical features can be arbitrarily combined to form multiple embodiment schemes of the present invention.

[0066] The present invention has been described exemplarily above in conjunction with the accompanying drawings. Obviously, the specific implementation of the present invention is not limited by the above methods. As long as various non-substantive improvements are made by adopting the concept and technical solutions of the present invention, or the concept and technical solutions of the present invention are directly applied to other occasions without improvement, they are all within the protection scope of the present invention.

Claims

1. A fixed hydraulic disc brake caliper, comprising a caliper assembly and a friction plate assembly disposed within the caliper assembly, the friction plate assembly including a pair of friction plate bodies arranged oppositely, characterized in that: The caliper assembly includes a cooperating inner caliper and outer caliper. The inner caliper is provided with mounting holes for the installation and fixation of the entire brake caliper. Both the inner caliper and the outer caliper are provided with drive cylinders for driving the movement of the friction pad body on the corresponding side, and both the inner caliper and the outer caliper are provided with return elastic structures for the return of the friction pad body on the corresponding side.

2. The fixed hydraulic disc brake caliper according to claim 1, characterized in that: The lower part of the inner caliper is provided with an extension part, and the mounting holes are arranged on the extension part.

3. The fixed hydraulic disc brake caliper according to claim 1, wherein: The tops of the inner caliper and the outer caliper are provided with a hollow structure, and a dust cover is provided above the hollow structure corresponding to the tops of the inner caliper and the outer caliper.

4. The fixed hydraulic disc brake caliper according to claim 1, characterized in that: The return elastic structure includes a movable bolt structure arranged on the corresponding side caliper. The inner end of the bolt structure is connected to the friction pad body on the corresponding side, and a return spring is arranged on the bolt structure outside the corresponding caliper.

5. The fixed hydraulic disc brake caliper according to claim 1, wherein: A connecting rod is arranged between the tops of the inner caliper and the outer caliper, and the friction pad assembly is provided with a guide hole that is movably matched with the connecting rod.

6. The fixed hydraulic disc brake caliper according to claim 1, characterized in that: An oil inlet is arranged on the inner caliper or the outer caliper. The drive cylinder on the inner caliper and the drive cylinder on the outer caliper are connected through a series of through holes that cooperate between the inner caliper and the outer caliper, and the oil inlet is connected to the series of through holes.

7. The fixed hydraulic disc brake caliper according to claim 4, wherein: An adjustable adjusting nut is arranged at the outer end of the bolt structure, and the return spring is located between the outside of the caliper and the adjusting nut.

8. The fixed hydraulic disc brake caliper according to claim 6, characterized in that: The drive cylinders on each side of the caliper are two hydraulic cylinders connected in parallel and communicating with each other.

9. The fixed hydraulic disc brake caliper according to claim 8, characterized in that: The hydraulic cylinder includes a cylinder body and a piston. A rectangular ring groove is arranged in the cylinder body, and a rectangular sealing ring acting on the outer edge of the piston is arranged in the rectangular ring groove.

10. The fixed hydraulic disc brake caliper according to claim 9, wherein: The bottoms of the two cylinder bodies on each side of the caliper are connected through two inclined holes to achieve a series connection setting.

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