CN211648844U - Drum brake convenient to adjust braking force - Google Patents
Drum brake convenient to adjust braking force Download PDFInfo
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- CN211648844U CN211648844U CN202020261141.XU CN202020261141U CN211648844U CN 211648844 U CN211648844 U CN 211648844U CN 202020261141 U CN202020261141 U CN 202020261141U CN 211648844 U CN211648844 U CN 211648844U
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- brake
- drum
- bottom plate
- braking force
- braking
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Abstract
The utility model discloses a drum brake convenient to adjust brake force, including rotating the brake drum that cup joints on the axletree and fix the epaxial braking bottom plate of cover joint, braking bottom plate and brake drum wholly are the cyclic annular structure, and braking bottom plate is located the circumference inboard of brake drum, the last brake shoe that is connected with the symmetry through the articulated joint rotation respectively of braking bottom plate, through two return spring fixed connection between two brake shoes, one side that two brake shoes kept away from each other is fixed respectively and is provided with the friction disc, and the friction disc cooperatees the braking with the interior disc of brake drum; the brake bottom plate is fixedly provided with symmetrically arranged adjustable supports which are of a hollow structure. The utility model discloses in, can make things convenient for the elasticity of quick braking force to drum brake to adjust, and simple structure, be convenient for adjust and use, made things convenient for people to come to adjust the elasticity of braking force according to actual need greatly.
Description
Technical Field
The utility model relates to a drum brake technical field especially relates to a drum brake convenient to adjust braking force.
Background
Drum brakes, also called block brakes, are used to brake by pressing brake blocks against brake wheels. The drum brake is characterized in that a brake transmission mechanism is utilized to enable a brake shoe to press a brake friction plate on the inner side of a brake drum, so that braking force is generated, wheels are decelerated or the vehicle stops within the shortest distance according to requirements, driving safety is guaranteed, and the vehicle can be parked reliably and cannot automatically slide.
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. Due to the low cost, the brake is still used in some economical cars, and is mainly used for rear wheels with small braking load and parking brake.
However, in the existing drum brake technology, the whole is usually a relatively fixed structure, which is troublesome to adjust the tightness of the braking force, time and labor are wasted in operation, and it is inconvenient for people to adjust the tightness of the braking force according to actual needs during maintenance. Therefore, the utility model provides a drum brake convenient to adjust braking force.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the shortcoming that exists among the prior art, and the drum brake who provides is convenient for adjust braking force.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a drum brake convenient for adjusting braking force comprises a brake drum rotatably sleeved on an axle and a brake bottom plate fixedly sleeved on the axle, wherein the brake bottom plate and the brake drum are both of an annular structure integrally, the brake bottom plate is positioned on the inner side of the circumference of the brake drum, the brake bottom plate is respectively and rotatably connected with symmetrically arranged brake shoes through hinged joints, the two brake shoes are fixedly connected through two return springs, friction plates are respectively and fixedly arranged on the sides, far away from each other, of the two brake shoes, and the friction plates are matched with the inner circular surface of the brake drum for braking;
the brake shoe is characterized in that the brake bottom plate is fixedly provided with adjustable supports which are symmetrically arranged, the adjustable supports are of a hollow structure, the interiors of the two adjustable supports are respectively and movably provided with brake wheel cylinders, piston rods are arranged on the brake wheel cylinders, one ends of the piston rods movably extend to the outside of the adjustable supports and are rotatably connected with one ends of the brake shoes, one ends of the brake wheel cylinders, far away from the piston rods, are rotatably provided with adjusting screws, a mounting hole is formed in one side inner wall of an inner cavity of the adjustable support, threaded pipes are fixedly sleeved in the mounting hole, the adjusting screws are in threaded connection with the threaded pipes, and one ends, far away from the brake wheel cylinders, of the adjusting screws extend to the.
Preferably, the nut head is specifically a hexagonal-face nut head; the two brake wheel cylinders are symmetrically arranged based on the circumferential center of the brake drum.
Preferably, the outer wall of the adjusting screw rod is provided with an external thread, the inner wall of the threaded pipe is provided with an internal thread, and the external thread on the outer wall of the adjusting screw rod is matched with the internal thread on the inner wall of the threaded pipe.
Preferably, both sides of the brake wheel cylinder are provided with limiting sliding blocks, both side inner walls of the inner cavity of the adjustable support are provided with limiting sliding grooves, and the limiting sliding blocks are connected with the limiting sliding grooves in a sliding mode.
Preferably, a bearing seat is fixedly arranged at one end, far away from the piston rod, of the brake wheel cylinder, and one end of the adjusting screw rod is rotatably installed on the bearing seat.
Preferably, the brake bottom plate is rotatably connected with the hinge joint through a rotating pin.
Compared with the prior art, the beneficial effects of the utility model are that:
in the utility model, the adjusting screw rod is driven to rotate on the bearing seat through the nut head, the adjusting screw rod also rotates relative to the threaded pipe when rotating, and the brake wheel cylinder also performs spacing sliding fit with the spacing chute through the spacing slider, so that the adjusting screw rod can perform thread transmission with the threaded pipe when rotating, and the brake wheel cylinder and the whole piston rod can move and adjust in the adjustable support; when the brake wheel cylinder and the piston rod move and are adjusted towards the brake shoe and the friction plate integrally, the braking force between the brake shoe and the inner circular surface of the brake drum can be adjusted more tightly; when the brake wheel cylinder and the piston rod are far away from the brake shoes and the friction plates, the adjustment of the braking force between the brake shoes and the inner circular surfaces of the brake drums and the braking force between the friction plates and the inner circular surfaces of the brake drums can be looser;
finally, the utility model discloses in, can make things convenient for the elasticity of quick braking force to drum brake to adjust, and simple structure, be convenient for adjust the use, made things convenient for people to come to adjust the elasticity of braking force according to actual need greatly.
Drawings
Fig. 1 is a schematic structural diagram of a drum brake convenient for adjusting braking force according to the present invention;
fig. 2 is a schematic view of the internal structure of the adjustable support in the present invention;
fig. 3 is a schematic structural diagram of the nut head, the adjusting screw, the threaded pipe, and the bearing seat of the present invention.
In the figure: the brake comprises a brake drum 1, a brake bottom plate 2, a rotating pin 3, a hinge joint 4, a brake shoe 5, a friction plate 6, a return spring 7, an adjustable support 8, a nut head 801, an adjustment screw 802, a threaded pipe 803, a bearing seat 804, a limit slider 805, a limit sliding chute 806, a brake wheel cylinder 9 and a piston rod 901.
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.
Referring to fig. 1-3, a drum brake convenient for adjusting braking force comprises a brake drum 1 rotatably sleeved on an axle and a brake bottom plate 2 fixedly sleeved on the axle, wherein the brake bottom plate 2 and the brake drum 1 are both of an annular structure as a whole, the brake bottom plate 2 is positioned on the inner side of the circumference of the brake drum 1, symmetrically arranged brake shoes 5 are rotatably connected to the brake bottom plate 2 through hinges 4 respectively, the two brake shoes 5 are fixedly connected through two return springs 7, friction plates 6 are fixedly arranged on the sides, away from each other, of the two brake shoes 5 respectively, and the friction plates 6 are matched with the inner circular surface of the brake drum 1 for braking;
the brake shoe is characterized in that the brake base plate 2 is fixedly provided with symmetrically arranged adjustable supports 8, the adjustable supports 8 are of a hollow structure, the interiors of the two adjustable supports 8 are respectively and movably provided with brake wheel cylinders 9, piston rods 901 are arranged on the brake wheel cylinders 9, one ends of the piston rods 901 movably extend to the outside of the adjustable supports 8 and are rotatably connected with one ends of the brake shoes 5, one ends, far away from the piston rods 901, of the brake wheel cylinders 9 are rotatably provided with adjusting screws 802, one side inner wall of an inner cavity of each adjustable support 8 is provided with mounting holes, threaded pipes 803 are fixedly sleeved in the mounting holes, the adjusting screws 802 are in threaded connection with the threaded pipes 803, and one ends, far away from the brake wheel cylinders 9, of the adjusting screws 802 extend to the outside of the adjustable supports. The utility model discloses in, can make things convenient for the elasticity of quick braking force to drum brake to adjust, and simple structure, be convenient for adjust and use, made things convenient for people to come to adjust the elasticity of braking force according to actual need greatly.
In this embodiment, the nut head 801 is specifically a hexagonal nut head; the two brake wheel cylinders 9 are symmetrically arranged based on the circumferential center of the brake drum 1.
In this embodiment, an external thread is disposed on an outer wall of the adjusting screw 802, an internal thread is disposed on an inner wall of the threaded pipe 803, and the external thread on the outer wall of the adjusting screw 802 is matched with the internal thread on the inner wall of the threaded pipe 803.
In this embodiment, both sides of the brake wheel cylinder 9 are provided with a limiting slide block 805, both side inner walls of the inner cavity of the adjustable support 8 are provided with a limiting slide groove 806, and the limiting slide block 805 is slidably connected with the limiting slide groove 806.
In this embodiment, a bearing seat 804 is fixedly disposed at an end of the brake wheel cylinder 9 away from the piston rod 901, and an end of the adjusting screw 802 is rotatably mounted on the bearing seat 804.
In the present embodiment, the brake shoe 2 is rotatably connected to the joint 4 by a rotation pin 3.
In the utility model, when the brake is used, the piston rod 901 on the brake wheel cylinder 9 extends to push the brake shoe 5 and the friction plate 6 to compress the inner circle surface of the brake drum 1 for braking, and the return spring 7 is stretched and deformed, thereby realizing the purpose of braking the vehicle, which is the prior art; on the other hand, in the present invention, the tightness of the braking force can be adjusted, when adjusting, the nut head 801 drives the adjusting screw rod 802 to rotate on the bearing seat 804, the adjusting screw rod 802 also rotates relatively to the threaded pipe 803 when rotating, because the brake cylinder 9 also performs the limit sliding fit with the limit sliding chute 806 through the limit slider 805, when the adjusting screw rod 802 rotates, the adjusting screw rod 802 and the threaded pipe 803 can perform the threaded transmission, and further the brake cylinder 9 and the piston rod 901 are integrally adjusted in the adjustable support 8, when the brake cylinder 9 and the piston rod 901 are integrally adjusted toward the brake shoe 5 and the friction plate 6, the adjustment of the braking force between the brake shoe 5, the friction plate 6 and the inner circle surface of the brake drum 1 can be tighter, when the brake cylinder 9 and the piston rod 901 are far away from the brake shoe 5 and the friction plate 6, this makes it possible to adjust the braking force between the brake shoes 5, the friction plates 6 and the inner circumferential surface of the brake drum 1 more loosely; finally, can make things convenient for quick the elasticity to drum brake's braking force to adjust, and simple structure, be convenient for adjust the use.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (6)
1. A drum brake convenient for adjusting braking force comprises a brake drum (1) rotatably sleeved on an axle and a brake bottom plate (2) fixedly sleeved on the axle, and is characterized in that the brake bottom plate (2) and the brake drum (1) are of an annular structure integrally, the brake bottom plate (2) is positioned on the inner side of the circumference of the brake drum (1), the brake bottom plate (2) is rotatably connected with symmetrically arranged brake shoes (5) through hinges (4) respectively, the two brake shoes (5) are fixedly connected through two return springs (7), one sides of the two brake shoes (5) far away from each other are fixedly provided with friction plates (6) respectively, and the friction plates (6) are matched with the inner circular surface of the brake drum (1) for braking;
the brake bottom plate (2) is fixedly provided with symmetrically arranged adjustable supports (8), the adjustable supports (8) are of hollow structures, the brake wheel cylinders (9) are respectively and movably arranged in the two adjustable supports (8), the brake wheel cylinders (9) are provided with piston rods (901), one end of the piston rod (901) movably extends to the outside of the adjustable support (8) and is rotatably connected with one end of the brake shoe (5), one end of the brake wheel cylinder (9) far away from the piston rod (901) is rotatably provided with an adjusting screw rod (802), a mounting hole is arranged on the inner wall of one side of the inner cavity of the adjustable support (8), a threaded pipe (803) is fixedly sleeved in the mounting hole, and the adjusting screw rod (802) is in threaded connection with the threaded pipe (803), and one end of the adjusting screw rod (802), which is far away from the brake wheel cylinder (9), extends to the outside of the adjustable support (8) and is fixedly welded with a nut head (801).
2. A drum brake with facilitated adjustment of the braking force, according to claim 1, characterized in that said nut head (801) is in particular a hexagonal-faced nut head; the two brake wheel cylinders (9) are symmetrically arranged based on the circumferential center of the brake drum (1).
3. A drum brake with easy adjustment of the braking force according to claim 1, characterized in that the adjusting screw (802) is provided with external threads on its outer wall, the threaded pipe (803) is provided with internal threads on its inner wall, and the external threads on the outer wall of the adjusting screw (802) are adapted to the internal threads on the inner wall of the threaded pipe (803).
4. A drum brake with convenient braking force adjustment according to claim 1, characterized in that limiting slide blocks (805) are arranged on both sides of the brake wheel cylinder (9), limiting slide grooves (806) are arranged on both inner walls of the inner cavity of the adjustable support (8), and the limiting slide blocks (805) are connected with the limiting slide grooves (806) in a sliding manner.
5. A drum brake with convenient braking force adjustment according to claim 1, characterized in that the end of the brake wheel cylinder (9) far away from the piston rod (901) is fixedly provided with a bearing seat (804), and one end of the adjusting screw (802) is rotatably mounted on the bearing seat (804).
6. A drum brake with facilitated regulation of the braking force according to claim 1, characterized in that the brake spider (2) is rotatably connected to the hinge joint (4) by means of a rotation pin (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020261141.XU CN211648844U (en) | 2020-03-05 | 2020-03-05 | Drum brake convenient to adjust braking force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020261141.XU CN211648844U (en) | 2020-03-05 | 2020-03-05 | Drum brake convenient to adjust braking force |
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| Publication Number | Publication Date |
|---|---|
| CN211648844U true CN211648844U (en) | 2020-10-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020261141.XU Active CN211648844U (en) | 2020-03-05 | 2020-03-05 | Drum brake convenient to adjust braking force |
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| CN (1) | CN211648844U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268087A (en) * | 2020-10-30 | 2021-01-26 | 宋伟 | But drum brake automatically regulated braking clearance device |
-
2020
- 2020-03-05 CN CN202020261141.XU patent/CN211648844U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112268087A (en) * | 2020-10-30 | 2021-01-26 | 宋伟 | But drum brake automatically regulated braking clearance device |
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