Brake disc stabilizing and limiting structure of disc brake of mining equipment

Abstract

The utility model relates to the technical field of disc brakes of large mining equipment, and discloses a brake disc stabilizing and limiting structure of a disc brake of mining equipment, which comprises a hub and a brake disc, the hub comprises an annular clamping part, a fixing part is arranged on the peripheral side of the annular clamping part, the annular clamping part protrudes out of the fixing part, clamping grooves are uniformly distributed on the annular clamping part, and the brake disc is arranged in the clamping grooves. The brake disc is clamped with the clamping groove through the brake disc claw; a plurality of pairs of first screw holes are evenly distributed in the fixing part in the annular direction, pressing plates are arranged at the positions, corresponding to the brake disc claws, of the first screw holes, the first ends of the pressing plates are pressed on the brake disc claws at the clamping groove positions of the annular clamping part, and the second ends of the pressing plates are matched with the first screw holes in the corresponding positions through fixing pieces. Displacement of the brake disc is limited through the pressing plate, and the problems of brake failure and brake piston dislocation caused by random movement of the brake disc claw in the axial direction are solved.

Description

Technical Field

[0001] This utility model relates to the technical field of disc brakes for large mining equipment, and in particular to a stable limiting structure for the brake disc of a disc brake for mining equipment. Background Technology

[0002] Large mining equipment disc brakes typically have six brake disc claws. These claws engage with an annular locking portion near the inner side of the wheel hub. Specifically, this annular locking portion has six corresponding slots. The brake disc claws engage with these slots to achieve the locking mechanism between the brake disc and the annular locking portion of the wheel hub. The annular locking portion on the wheel hub has an annular fixing part protruding from the fixing part. The fixing part has evenly distributed screw holes, which, through tire bolts and pressure blocks, limit the movement of the tire support frame, preventing axial outward movement. Brakes are located on both sides of the brake disc. When braking is required on large mining equipment, the brake piston drives the brake pads to clamp the brake disc from both sides. The engagement of the brake disc claws with the slots then brakes the wheel hub.

[0003] Current mining equipment brake disc claws have threaded holes and are secured to the bottom of the groove with fixing screws to ensure that the brake disc is always engaged with the annular engagement part of the wheel hub. When braking, the brake disc claws and the side wall of the groove engage to slow down or stop the equipment. However, due to the large weight of the mining equipment itself and the certain gap between the brake disc claws and the groove, the disc claws are prone to severe wear under emergency or frequent braking conditions, which can lead to the breakage of the fixing screws on the brake disc claws.

[0004] When all the fixing screws break, the brake disc cannot be effectively secured to the annular locking part of the wheel hub, becoming loose and prone to axial movement. This failure not only disrupts the normal braking function of the brake disc, but the axial movement of the brake disc can also affect the braking of subsequent brakes, causing brake piston misalignment and malfunction. Furthermore, it creates safety hazards, potentially leading to brake failure, increased vehicle driving risks, and severely weakening the reliability and durability of disc brakes. Utility Model Content

[0005] To address the shortcomings of existing technologies, the purpose of this utility model is to provide a stable and limiting structure for the brake disc of a disc brake in mining equipment. By setting a pressure plate to press the brake disc claws, the brake disc is effectively fixed, preventing brake failure and brake piston misalignment caused by the arbitrary movement of the brake disc claws in the axial direction.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution:

[0007] A disc brake stabilizing and limiting structure for a mining equipment disc brake includes a hub and a brake disc. The hub includes an annular snap-fit ​​portion, with a fixing portion on its periphery. The annular snap-fit ​​portion protrudes from the fixing portion, and slots are evenly distributed on the annular snap-fit ​​portion. The brake disc engages with the slots via brake disc claws. The fixing portion has several pairs of first screw holes evenly distributed circumferentially. A pressure plate is provided at the position of the first screw hole corresponding to the position of the brake disc claw. The first end of the pressure plate presses on the brake disc claw at the position of the slot in the annular snap-fit ​​portion, and the second end engages with the first screw hole at the corresponding position via a fixing member.

[0008] As a further implementation, in the first screw hole, the first screw hole corresponding to the radial direction of the brake disc claw is used to fix the pressure plate and the pressure block, and the remaining first screw hole is only used to cooperate with the tire bolts and the pressure block to fix the tire support frame.

[0009] As a further implementation, it also includes brakes located on both sides of the brake disc, wherein the brakes are provided with brake pistons and brake pads are provided at the output end of the brake pistons for clamping the brake discs.

[0010] As a further implementation, multiple pressure plates are evenly distributed along the circumference, and in two adjacent brake disc claws, one brake disc claw has a pressure plate and the other brake disc claw does not have a pressure plate.

[0011] As a further implementation, the brake disc claw is in surface contact with the first end of the pressure plate, and the brake disc claw is fixed to the slot by fixing screws;

[0012] Alternatively, no fixing screws may be installed on the brake disc claws.

[0013] As a further implementation, the pressure plate is rectangular, with the first end cap of the pressure plate covering the outside of the slot opening. The width of the pressure plate is greater than the length of the slot opening, so that the edge of the pressure plate makes surface contact with the outer side of the annular snap-fit ​​part.

[0014] As a further implementation, the fastener uses long screws, the length of which is greater than the length of the tire screws, and the second end of each pressure plate is engaged with the corresponding first screw hole by a pair of long screws.

[0015] As a further implementation, a gasket is provided on the inner side of the pressure plate, and the gasket is located between the corresponding pressure block and the pressure plate, and together they cooperate with the long screw.

[0016] As a further implementation, the thickness of the gasket is the height difference between the pressure block and the outer side of the annular snap-fit ​​portion, and the gasket has an annular structure.

[0017] Secondly, a mining equipment is provided with a brake disc stabilizing and limiting structure as described in any of the above-mentioned mining equipment disc brakes.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention effectively secures the brake disc by setting a pressure plate to press the brake disc claws, preventing brake failure and brake piston misalignment caused by arbitrary movement of the brake disc claws in the axial direction. The addition of the pressure plate solves the braking risk caused by the breakage of the fixing screws in the existing brake disc stabilizing and limiting structure, ensuring the safe and stable operation of the braking system of mining equipment. It can be directly improved on existing mining equipment by removing the tire bolts at the radial position of the corresponding brake disc claws and fixing the gasket and pressure plate at the first screw hole position with long screws, thereby improving the problems existing in the current braking structure of mining equipment, eliminating safety hazards caused by abnormal braking, and ensuring the safe operation of vehicles. Attached Figure Description

[0020] The accompanying drawings, which form part of this specification, are used to provide a further understanding of this utility model. The illustrative embodiments of this utility model and their descriptions are used to explain this utility model and do not constitute an improper limitation of this utility model.

[0021] Figure 1 This is a schematic diagram of the brake disc stabilizing and limiting structure in an embodiment of this utility model;

[0022] Figure 2 This is a schematic diagram of the pressure plate structure in an embodiment of this utility model;

[0023] Figure 3 This is a schematic diagram of the gasket structure in an embodiment of this utility model.

[0024] The diagram exaggerates the spacing or dimensions between parts to show their positions; the diagram is for illustrative purposes only.

[0025] Among them: 1. Pressure plate, 2. Brake, 3. Brake disc, 31. Brake disc claw, 32. Fixing screw, 4. Tire bolt, 5. Brake piston, 6. Tire, 61. Tire support bracket, 7. Wheel hub, 71. Fixing part, 72. Annular snap-fit ​​part, 8. Long screw, 9. Pressure block. Detailed Implementation

[0026] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the present invention. Unless otherwise specified, all technical and scientific terms used in this invention have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0027] Example 1

[0028] In a typical embodiment of this utility model, refer to Figure 1As shown, a disc brake stabilizing and limiting structure for a mining equipment disc brake includes a hub 7, a brake disc 3, a brake 2, and a pressure plate 1.

[0029] The hub 7 includes an annular snap-fit ​​portion 72, and a fixing portion 71 is provided around the annular snap-fit ​​portion 72. The annular snap-fit ​​portion 72 protrudes from the fixing portion 71, that is, the annular snap-fit ​​portion 72 is higher than the fixing portion 71. The cross-section at the position of the two is a stepped structure.

[0030] like Figure 1 As shown, the brake disc 3 of the large mining equipment disc brake in this embodiment is provided with six brake disc claws, and six slots are evenly distributed on the annular locking part 72. The brake disc 3 is engaged with the annular locking part 72 through the brake disc claws 31 and the slots of the annular locking part 72, so as to realize the engagement between the brake disc 3 and the annular locking part 72 of the wheel hub.

[0031] Brakes are provided on both sides of the brake disc. When large mining equipment needs to be braked, the brake piston 6 of the brake 2 drives the brake pads to clamp the brake disc 3 from both sides. Then, under the action of the brake disc claws and the slots engaging, the wheel hub is braked.

[0032] The fixing part 71 has pairs of screw holes arranged evenly. The tire screws are fixed by passing through the pressure block 9 and engaging with the screw holes. The outer end of the pressure block 9 fixes and limits the tire support frame 61 to prevent the tire support frame 61 from moving outward axially.

[0033] The existing brake disc claw 31 of mining equipment has threaded holes, and a fixing screw 32 passes through the brake disc claw 31 and engages with the threaded hole at the bottom of the groove to fix the brake disc 3 onto the annular locking part 72, ensuring that the brake disc is always engaged with the annular locking part 72 of the wheel hub 7. However, during braking, the fixing screw 32 on the brake disc claw 31 is prone to breakage. Without the restraint of the fixing screw 32, the wear between the brake disc claw 31 and the side of the groove is accelerated. Uneven movement of the brake disc claw 31 can easily cause misalignment of the brake piston 5, functional failure, and increased vehicle driving risks. To solve the above problems, the existing brake disc stabilizing and limiting structure needs to be improved.

[0034] Several pairs of first screw holes are evenly distributed around the upper edge of the fixing part 71. Multiple pairs of first screw holes are evenly distributed on the fixing part 72, and cooperate with the corresponding pressure block 9 and tire screw 4 to fix the tire support frame 61. The tire support frame 61 is the support frame for the tire 6.

[0035] like Figure 1 As shown, a pressure plate 1 is provided at the position of the first screw hole corresponding to the brake disc claw. Among the multiple pairs of first screw holes, three pairs of first screw holes correspond to the radial direction of the brake disc claw 31. Therefore, these three pairs of first screw holes are used to cooperate with the pressure plate 1.

[0036] Specifically, the first end of the pressure plate 1 presses against the brake disc claw 31 at the slot position of the annular snap-fit ​​part 72, and the second end engages with the corresponding first screw hole through a fixing component. Three sets of pressure plates 1 are evenly distributed circumferentially on the wheel hub at 120° intervals, with three pairs of first screw holes located radially on the brake disc claw. The other first screw holes are only used to engage with the tire bolts 4 and the pressure block 9 to fix the tire support frame and remain unchanged. Therefore, when modifying the existing brake disc stabilizing and limiting structure of the mining equipment disc brake, the tire bolts 4 at the aforementioned three pairs of first screw locations need to be removed, and then the pressure plate 1 is fixed on using long screws 8.

[0037] In addition, it also includes brakes 2 located on both sides of the brake disc. The brakes 2 are equipped with brake pistons 5, and the output end of the brake pistons 5 is equipped with brake pads, which are used to clamp the brake disc 3 to achieve braking. The structure and installation position of the brakes are existing technologies and will not be described in detail here.

[0038] In this embodiment, the three pressure plates 1 are evenly distributed circumferentially. In two adjacent brake disc claws 31, one brake disc claw has a pressure plate, while the other brake disc claw does not. Figure 1 As shown.

[0039] In this embodiment, the brake disc claw 31 is in surface contact with the first end of the pressure plate 1. The pressure plate 1 presses down on the outer side of the brake disc claw 31 at the slot, thereby effectively fixing the brake disc 3 and preventing brake failure and misalignment of the brake piston 5 caused by the arbitrary movement of the brake disc claw 31 in the axial direction.

[0040] like Figure 1 and Figure 2 As shown, the pressure plate 1 is a rectangular plate structure with two through holes at its second end for the long screw 8 to pass through and be fixed at the first screw hole. The first end of the pressure plate 1 covers the outside of the slot opening, and the width of the pressure plate is greater than the length of the slot opening, so that the edge of the first end of the pressure plate 1 makes surface contact with the outer side of the annular snap-fit ​​part 72, and the middle position of the first end of the pressure plate 1 makes surface contact with the brake disc claw 31, together with the bottom surface of the slot, restricting the displacement of the brake disc claw.

[0041] In this embodiment, the fastener uses a long screw 8. Since the first screw hole originally used a tire screw to fix the pressure block 9, and since the annular snap-fit ​​part 72 protrudes from the fixing part 71, the length of the long screw 8 needs to be greater than the length of the tire screw 4. The second end of each pressure plate 1 is engaged with the corresponding first screw hole through a pair of long screws 8. The long screw 8 also needs to pass through the pressure block 9 here. Therefore, the long screw 8 is engaged with both the pressure plate 1 and the pressure block 9.

[0042] However, since the pressure block 1 is located on the inner side of the annular locking part 72, in order to ensure effective surface contact between the pressure plate and the brake disc claw, a gasket 2 structure is provided on the inner side of the pressure plate 1. The gasket 2 is located between the corresponding pressure block and the pressure plate, and together they cooperate with the long screw 8. The gasket is an annular metal gasket, used to compensate for the height difference between the pressure plate 1 and the pressure block 9, so that the pressure plate 1 and the brake disc claw are set parallel. The long screw 8 is made of high-strength alloy material.

[0043] By removing the tire bolts in the radial direction of the corresponding brake disc claw 31, placing the gasket 2 and the pressure plate 1 and fixing them with the long screw 8, the other end of the pressure plate 1 presses against the brake disc claw 31.

[0044] Since the existing brake disc claw 31 is fixed to the slot by the fixing screw 32, the addition of the pressure plate 1 can effectively ensure the normal operation of the brake. Therefore, the improved disc brake of the mining equipment can retain the fixing screw 32 or remove the fixing screw 32. In this embodiment, it is preferable to remove the fixing screw 32.

[0045] In this embodiment, the pressure plate 1 is placed at the tire bolt position, which can precisely limit the displacement of the brake disc. The pressure plate and the brake pads have a precise movement space to accommodate the return requirements of the brake pistons on both sides. The pressure plate 1 can prevent the brake disc from shifting and ensure that the brake pistons of the brake system work normally. When the brake is released, the four internal plunger pumps return smoothly with the reserved space to ensure stable circulation of the braking system.

[0046] By setting pressure plate 1, component wear can be reduced, the overall service life of the disc brake can be extended, and it meets the long-term operation needs of the mine.

[0047] Example 2

[0048] In a typical embodiment of this utility model, refer to Figures 1-3 As shown, a mining equipment is provided with the disc brake stabilizing and limiting structure of the mining equipment disc brake described in Embodiment 1. This structure can eliminate safety hazards caused by abnormal braking, ensure vehicle operation safety, effectively avoid the risk of broken fixing screws, stabilize the braking process of the brake disc, and maintain stable braking performance.

[0049] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A mine equipment disc brake pad steady limiting structure, characterized in that, The application relates to a wheel hub and a brake disc, wherein the wheel hub comprises a ring-shaped clamping part, a fixing part is arranged on the periphery of the ring-shaped clamping part, the ring-shaped clamping part protrudes from the fixing part, clamping grooves are uniformly distributed on the ring-shaped clamping part, and the brake disc is clamped with the clamping grooves through brake disc claws; a plurality of pairs of first screw holes are uniformly distributed on the fixing part in the circumferential direction, and a pressing plate is arranged on the fixing part at positions corresponding to the brake disc claws, the first end of the pressing plate is pressed on the brake disc claws at the positions of the clamping grooves of the ring-shaped clamping part, and the second end of the pressing plate is matched with the corresponding first screw holes through fixing members.

2. The stable limiting structure of a disc brake of a disc brake of a mining equipment according to claim 1, characterized in that, In the first screw holes, the first screw holes corresponding to the radial direction of the brake disc claws are used for fixing the pressing plates and pressing blocks, and the remaining first screw holes are only used for matching with tire screws and pressing blocks to fix a tire support frame.

3. The stable limiting structure of a disc brake of a disc brake of a mining equipment according to claim 1, characterized in that, The application further comprises brakes arranged on both sides of the brake disc, the brakes are provided with brake pistons, brake pads are arranged at the output ends of the brake pistons, and the brake pads are used for clamping the brake disc through the brake pads.

4. The stable limiting structure of a disc brake of a disc brake of a mining equipment according to claim 1, characterized in that, A plurality of the pressing plates are arranged in the circumferential direction, and among two adjacent brake disc claws, a pressing plate is arranged at one brake disc claw, and no pressing plate is arranged at the other brake disc claw.

5. The mine equipment disc brake steady limiting structure of claim 4, wherein, The brake disc claws are in surface contact with the first ends of the pressing plates, and the brake disc claws are fixed with the clamping grooves through fixing screws. Alternatively, no fixing screw is arranged on the brake disc claws.

6. The mine equipment disc brake steady limiting structure of claim 1, wherein, The pressing plates are rectangular, the first ends of the pressing plates cover the outside of the opening of the clamping grooves, and the width of the pressing plates is greater than the length of the opening of the clamping grooves, so that the edge positions of the pressing plates are in surface contact with the outer side surface of the ring-shaped clamping part.

7. The mine equipment disc brake steady limiting structure of claim 6, wherein, The fixing members are long screws, the length of the long screws is greater than the length of the tire screws, and the second end of each pressing plate is matched with the corresponding first screw hole through a pair of long screws.

8. The mine equipment disc brake steady limiting structure according to claim 7, characterized in that, A gasket is arranged on the inner side of the pressing plate, and the gasket is arranged between the corresponding pressing block and the pressing plate and matched with the long screw.

9. The mine equipment disc brake steady limiting structure according to claim 8, characterized in that, The thickness of the gasket is the height difference between the pressing block and the outer side surface of the ring-shaped clamping part, and the gasket is in a ring-shaped structure.

10. A mining equipment characterized in that, The application further comprises the mine equipment disc brake brake disc stable limiting structure as claimed in any one of claims 1-9.

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