CN213685040U - High-precision high-strength drum brake - Google Patents
High-precision high-strength drum brake Download PDFInfo
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- CN213685040U CN213685040U CN202022116209.8U CN202022116209U CN213685040U CN 213685040 U CN213685040 U CN 213685040U CN 202022116209 U CN202022116209 U CN 202022116209U CN 213685040 U CN213685040 U CN 213685040U
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Abstract
The utility model discloses a high accuracy high strength drum brake, including braking bottom plate and return spring, one side of braking bottom plate is connected with the drum brake, and the inside spacing groove of having seted up in both sides of braking bottom plate, the inboard of spacing groove is connected with the stopper, and is fixed with the brake shoe on the stopper, one side of brake shoe is provided with the friction lining, and the upper end of brake shoe has seted up the connecting hole, return spring connects in the connecting hole outside. The high-precision high-strength drum brake is provided with two brake wheel cylinders, the two brake wheel cylinders are movably connected with the brake shoes and the adjusting screw rods, so that the brake shoes cannot rotate in the adjusting process of the adjusting screw rods between the two brake wheel cylinders, meanwhile, the distance between the brake shoes and the brake drum can be finely adjusted by the threaded connection between the adjusting screw rods and the brake wheel cylinders, the precision of the drum brake is improved, and the braking effect of the brake shoes on the brake drum is guaranteed by the two brake wheel cylinders.
Description
Technical Field
The utility model relates to a drum brake technical field specifically is a high accuracy high strength drum brake.
Background
Drum brakes, also called block brakes, are used to brake by pressing brake blocks against brake wheels. Drum brakes are early designs of brake systems, and the design of the brake drum is already used on a carriage in 1902 years, and the brake drum is not started to be widely applied in the automobile industry until about 1920 years. The main stream of the drum brake is of an inward-expanding type, and a brake block (brake shoe) of the drum brake is positioned on the inner side of a brake wheel, and the brake block is expanded outwards to rub the inner side of the brake wheel during braking, so that the purpose of braking is achieved. In the last thirty years, drum brakes have gradually been moved out of the way to disc brakes in the passenger car sector. But still used in some economical cars due to low cost, mainly used for rear wheels with small braking load and parking brake.
The drum brake on the market can not accomplish the precision and adjust, and the brake shoe is relatively poor in stability in the actual motion process, influences the braking effect between the brake drum, and the not high problem of intensity simultaneously, for this reason, we propose such high accuracy high strength drum brake.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a high accuracy high strength drum brake to solve the unable precision of accomplishing of drum brake that proposes in the above-mentioned background art and adjust, the brake shoe is relatively poor at actual motion in-process stability, influences and the brake effect between the brake drum, problem that intensity is not high simultaneously.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a high accuracy high strength drum brake, includes brake bottom plate and return spring, one side of brake bottom plate is connected with the drum brake, and the inside spacing groove of having seted up in both sides of brake bottom plate, the inboard of spacing groove is connected with the stopper, and the stopper upper end is fixed with the brake shoe, one side of brake shoe is provided with the friction lining, and the upper end of brake shoe has seted up the connecting hole, return spring connects in the connecting hole outside, and return spring is connected with the connecting hole through fastening bolt, the one end of brake shoe is connected with brake wheel cylinder, and the other end of brake shoe is connected with the movable sleeve, the opposite side of movable sleeve is connected with adjusting screw, settle the lower extreme of brake wheel cylinder has the fixing base, and the inboard of fixing base is.
Preferably, the horizontal central axis of the brake shoe coincides with the horizontal central axis of the limiting block, the limiting block and the brake shoe are vertically and fixedly connected, and the limiting block is in an I-shaped structure.
Preferably, the size of the outer side of the limiting block is matched with the size of the inner side of the limiting groove, and the brake shoe passes through the limiting block and forms a sliding structure with the limiting groove.
Preferably, the connecting holes and the brake shoe are of an integrated structure, and the connecting holes are distributed at the upper ends of the two sides of the brake shoe at equal intervals.
Preferably, the return springs are symmetrically distributed along the central axis of the brake shoe, and the return springs and the brake shoe form a movable structure through fastening bolts and connecting holes.
Preferably, the brake shoe is movably connected with the adjusting screw rod through a movable sleeve, and the adjusting screw rod is in threaded connection with one side of the brake wheel cylinder.
Preferably, the number of the brake wheel cylinders is two, the brake wheel cylinders are symmetrically distributed along the central axis of the brake shoe, and the brake wheel cylinders and the brake bottom plate form a movable structure through the fixed seat and the fixed bolt.
Compared with the prior art, the beneficial effects of the utility model are that: the high-precision high-strength drum brake is provided with a brake shoe, a horizontal central axis of the brake shoe is coincident with a horizontal central axis of a limiting block, the brake shoe and the limiting block, which are coincident with each other, can ensure the accuracy of the position between the brake shoe and the limiting block, the limiting block fixed at the lower end of the brake shoe is matched with limiting grooves formed in two sides of a brake bottom plate, the limiting grooves are arc-shaped and matched with the motion track of the brake shoe, the brake shoe can be ensured to keep stable motion under the pushing of a brake wheel cylinder, the strength of the brake shoe is improved, and meanwhile, the smoothness of the motion of the brake shoe is ensured by;
the return springs are symmetrically distributed along the central axis of the brake shoe and are equidistantly distributed in the connecting holes at the upper ends of the two sides of the brake shoe, so that the return springs can be adjusted according to actual use conditions, the brake shoe can achieve the optimal resilience force, and the fixing firmness is ensured while the return springs are convenient to mount and dismount through the fastening bolts and the connecting holes, so that the motion stability of the brake shoe is further improved;
the two brake wheel cylinders are movably connected with the brake shoes and the adjusting screw rod, so that the brake shoes cannot rotate in the adjusting process of the adjusting screw rod between the adjusting screw rod and the brake wheel cylinders, the distance between the brake shoes and the brake drum can be finely adjusted by adjusting the threaded connection between the adjusting screw rod and the brake wheel cylinders, the precision of the drum brake is improved, and the braking effect of the brake shoes on the brake drum is ensured by the two brake wheel cylinders.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the structure of the position limiting block of the present invention;
fig. 3 is an enlarged schematic view of a portion a in fig. 1 according to the present invention.
In the figure: 1. braking the bottom plate; 2. a brake drum; 3. a limiting groove; 4. a limiting block; 5. a brake shoe; 6. a friction lining; 7. connecting holes; 8. a return spring; 9. fastening a bolt; 10. a brake wheel cylinder; 11. a movable sleeve; 12. adjusting the screw rod; 13. a fixed seat; 14. and (5) fixing the bolt.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a high-precision high-strength drum brake comprises a brake bottom plate 1, a brake drum 2, a limiting groove 3, a limiting block 4, a brake shoe 5, a friction lining 6, a connecting hole 7, a return spring 8, a fastening bolt 9, a brake wheel cylinder 10, a movable sleeve 11, an adjusting screw 12, a fixed seat 13 and a fixing bolt 14, wherein the brake drum 2 is connected to one side of the brake bottom plate 1, the limiting groove 3 is formed in each of two sides of the brake bottom plate 1, the limiting block 4 is connected to the inner side of the limiting groove 3, the brake shoe 5 is fixed to the upper end of the limiting block 4, the horizontal central axis of the brake shoe 5 is overlapped with the horizontal central axis of the limiting block 4, the limiting block 4 is vertically and fixedly connected with the brake shoe 5, the limiting block 4 is in an I-shaped structure, the size of the outer side of the limiting block 4 is identical with the size of the inner side of the limiting groove 3, the brake shoe 5 and the limiting block 4, of which the horizontal central axes are coincident, can ensure the accuracy of the position between the brake shoe 5 and the limiting block 4, are fixed at the lower end of the brake shoe 5, are matched with the limiting grooves 3 formed in the two sides of the brake bottom plate 1, and the limiting grooves 3 are arc-shaped and are matched with the motion trail of the brake shoe 5, so that the brake shoe 5 can keep stable motion under the pushing of the brake wheel cylinder 10, the strength of the brake shoe 5 is improved, and meanwhile, the sliding structure ensures the smoothness of the motion of the brake shoe 5;
one side of the brake shoe 5 is provided with a friction lining 6, the upper end of the brake shoe 5 is provided with a connecting hole 7, a return spring 8 is connected to the outer side of the connecting hole 7, and the return spring 8 is connected with the connecting hole 7 through the fastening bolt 9, the connecting hole 7 and the brake shoe 5 are in an integrated structure, the connecting holes 7 are equidistantly distributed at the upper ends of the two sides of the brake shoe 5, the return springs 8 are symmetrically distributed along the central axis of the brake shoe 5, and the return springs 8 form a movable structure with the brake shoe 5 through the fastening bolts 9 and the connecting holes 7, are distributed in the connecting holes 7 at the upper ends of the two sides of the brake shoe 5 at equal intervals, so that the return spring 8 can be adjusted according to the actual use condition, the brake shoe 5 achieves the optimal resilience force, through the fastening bolt 9 and the connecting hole 7, the fixing firmness is ensured while the return spring 8 is convenient to mount and dismount, so that the movement stability of the brake shoe 5 is further improved;
one end of the brake shoe 5 is connected with a brake wheel cylinder 10, the other end of the brake shoe 5 is connected with a movable sleeve 11, the other side of the movable sleeve 11 is connected with an adjusting screw 12, the lower end of the brake wheel cylinder 10 is provided with a fixed seat 13, a fixing bolt 14 penetrates through the inner side of the fixed seat 13, the brake shoe 5 is movably connected with the adjusting screw 12 through the movable sleeve 11, the adjusting screw 12 is in threaded connection with one side of the brake wheel cylinder 10, the two brake wheel cylinders 10 are arranged, the brake wheel cylinders 10 are symmetrically distributed along the central axis of the brake shoe 5, the brake wheel cylinders 10 form a movable structure with the brake bottom plate 1 through the fixed seat 13 and the fixing bolt 14, the brake shoe 5 and the adjusting screw 12 are movably connected, so that the brake shoe 5 cannot rotate in the process of adjusting the adjusting screw 12 between the brake wheel cylinders 10, and the adjusting screw 12 is in threaded connection, the distance between the brake shoe 5 and the brake drum 2 can be finely adjusted, the precision of the drum brake is improved, and meanwhile, the two brake wheel cylinders 10 guarantee the braking effect of the brake shoe 5 on the brake drum 2.
The working principle is as follows: for the high-precision high-strength drum brake, firstly, the distance between the brake shoe 5 and the brake drum 2 is adjusted according to actual conditions, the brake shoe 5 and the adjusting screw 12 are movably connected, so that the brake shoe 5 cannot rotate in the process of adjusting the adjusting screw 12 between the adjusting screw 12 and the brake wheel cylinder 10, meanwhile, the adjusting screw 12 is in threaded connection with the brake wheel cylinder 10, the distance between the brake shoe 5 and the brake drum 2 can be finely adjusted, the precision of the drum brake is improved, meanwhile, the two brake wheel cylinders 10 ensure the braking effect of the brake shoe 5 on the brake drum 2, then, the return springs 8 are fixed and are equidistantly distributed in the connecting holes 7 at the upper ends of the two sides of the brake shoe 5, so that the return springs 8 can be adjusted according to actual use conditions, the brake shoe 5 achieves the optimal resilience, and the fixing firmness of the return springs 8 is ensured while the installation and the disassembly of the return springs 8 are facilitated through the fastening bolts 9 and, therefore, the motion stability of the brake shoe 5 is further improved, the brake wheel cylinder 10 pushes the brake shoe 5 to brake the brake drum 2, the brake shoe 5 and the limiting block 4 which are overlapped with each other in the horizontal central axis can guarantee the position accuracy between the brake shoe 5 and the limiting block 4, the limiting block 4 fixed at the lower end of the brake shoe 5 is matched with the limiting grooves 3 formed in the two sides of the brake bottom plate 1, the limiting grooves 3 are arc-shaped and matched with the motion track of the brake shoe 5, the brake shoe 5 can be guaranteed to keep stable motion under the pushing of the brake wheel cylinder 10, the strength of the brake shoe 5 is improved, meanwhile, the sliding structure guarantees the motion smoothness of the brake shoe 5, and the whole high-precision high-strength drum brake can be used.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. A high accuracy high strength drum brake, includes backing plate (1) and return spring (8), its characterized in that: one side of the brake bottom plate (1) is connected with a brake drum (2), limiting grooves (3) are formed in the two sides of the brake bottom plate (1), the inner sides of the limiting grooves (3) are connected with limiting blocks (4), brake shoes (5) are fixed to the upper ends of the limiting blocks (4), friction linings (6) are arranged on one sides of the brake shoes (5), connecting holes (7) are formed in the upper ends of the brake shoes (5), return springs (8) are connected to the outer sides of the connecting holes (7), the return springs (8) are connected with the connecting holes (7) through fastening bolts (9), one ends of the brake shoes (5) are connected with brake wheel cylinders (10), the other ends of the brake shoes (5) are connected with movable sleeves (11), the other sides of the movable sleeves (11) are connected with adjusting screw rods (12), and fixing seats (13) are arranged at the lower ends of the brake wheel cylinders, and a fixing bolt (14) is arranged on the inner side of the fixing seat (13) in a penetrating way.
2. A high accuracy high strength drum brake according to claim 1, characterized in that: the horizontal central axis of the brake shoe (5) coincides with the horizontal central axis of the limiting block (4), the limiting block (4) is vertically and fixedly connected with the brake shoe (5), and the limiting block (4) is of an I-shaped structure.
3. A high accuracy high strength drum brake according to claim 1, characterized in that: the size of the outer side dimension of the limiting block (4) is matched with the size of the inner side dimension of the limiting groove (3), and the brake shoe (5) forms a sliding structure with the limiting groove (3) through the limiting block (4).
4. A high accuracy high strength drum brake according to claim 1, characterized in that: the connecting holes (7) and the brake shoe (5) are of an integrated structure, and the connecting holes (7) are distributed at the upper ends of the two sides of the brake shoe (5) at equal intervals.
5. A high accuracy high strength drum brake according to claim 1, characterized in that: the return springs (8) are symmetrically distributed along the central axis of the brake shoe (5), and the return springs (8) form a movable structure with the brake shoe (5) through fastening bolts (9) and connecting holes (7).
6. A high accuracy high strength drum brake according to claim 1, characterized in that: the brake shoe (5) is movably connected with the adjusting screw rod (12) through a movable sleeve (11), and the adjusting screw rod (12) is in threaded connection with one side of the brake wheel cylinder (10).
7. A high accuracy high strength drum brake according to claim 1, characterized in that: the number of the brake wheel cylinders (10) is two, the brake wheel cylinders (10) are symmetrically distributed along the central axis of the brake shoe (5), and the brake wheel cylinders (10) form a movable structure with the brake bottom plate (1) through the fixed seat (13) and the fixed bolt (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022116209.8U CN213685040U (en) | 2020-09-16 | 2020-09-16 | High-precision high-strength drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022116209.8U CN213685040U (en) | 2020-09-16 | 2020-09-16 | High-precision high-strength drum brake |
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| Publication Number | Publication Date |
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| CN213685040U true CN213685040U (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202022116209.8U Active CN213685040U (en) | 2020-09-16 | 2020-09-16 | High-precision high-strength drum brake |
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| CN (1) | CN213685040U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833789A (en) * | 2021-09-28 | 2021-12-24 | 黄山菲英汽车零部件有限公司 | Drum brake sheet capable of continuously keeping brake braking force |
-
2020
- 2020-09-16 CN CN202022116209.8U patent/CN213685040U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113833789A (en) * | 2021-09-28 | 2021-12-24 | 黄山菲英汽车零部件有限公司 | Drum brake sheet capable of continuously keeping brake braking force |
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Address after: No. 177, Houshan, Nanshan village, Lushan street, Fuyang District, Hangzhou City, Zhejiang Province, 310000 Patentee after: Hangzhou Fuhong Brake Technology Co.,Ltd. Country or region after: China Address before: No. 177, Houshan, Nanshan village, Lushan street, Fuyang District, Hangzhou City, Zhejiang Province, 310000 Patentee before: HANGZHOU FUYANG FORK TRUCK BRAKE CO.,LTD. Country or region before: China |