Pneumatic friction type brake with quick-assembly split structure

Abstract

The utility model discloses a pneumatic friction type brake of a quick-assembly split structure, and belongs to the technical field of industrial brakes. The pneumatic friction type brake of the fast-assembly split structure comprises a shaft tube, a flange plate rotationally arranged on the shaft tube in a sleeving mode, a dual steel sheet axially moving in the flange plate and a friction sheet axially moving on the shaft tube of the shaft sleeve, a cylinder body inflates air into an air inlet hole, and a piston arranged in the cylinder body is subjected to air pressure acting force. And on the contrary, the pressure source in the cylinder body is cut off, and the piston pushes the push disc to axially move leftwards under the action of the brake spring, so that the brake spring drives the push disc arranged on the side face to move, and the multiple sets of dual steel discs and friction plates are separated. The push disc presses the multiple sets of dual steel sheets and friction sheets, the brake is combined again, the working condition of long-term combination is better met, the split type structure is adopted, machining and installation are convenient, and cost is saved.

Description

Technical Field

[0001] The present application relates to the technical field of industrial brakes, and particularly to a pneumatic friction brake with a quick-installation split structure. Background Art

[0002] A brake is a commonly used component in mechanical transmission, which can separate or engage the transmission system at any time. As shown in the traditional friction brake Figure 2 , it is a normally open friction brake. When engaged, the driving disk 5' is driven to move on the shaft tube 1' by the driving member 6', so that the driving disk 5' pushes the friction plate 4' and the mating steel sheet 3' to move, so that the friction plate 4' contacts the mating steel sheet 3', and then the kinetic energy is transmitted to the connecting disk 2' to achieve kinetic energy transmission; when disengaged, after the driving member 6' is disconnected, under the elastic force of the separating disc spring 7', the friction plate 4' and the mating steel sheet 3' are reset and separated. Although it can achieve the braking purpose, in the working conditions that need to be engaged for a long time, it is necessary to ensure that the driving cylinder is always ventilated and in the working state, and it is difficult to continuously control the stability of the pressure in the cylinder. When the pressure in the cylinder decreases, the torque decreases, which easily causes the clutch to fail to work.

[0003] Therefore, the present application provides a pneumatic friction brake with a quick-installation split structure to solve the above problems. Utility Model Content

[0004] The present application provides a pneumatic friction brake with a quick-installation split structure, aiming to solve the problem that although the existing friction clutch can achieve the braking purpose, in the working conditions that need to be engaged for a long time, it is necessary to ensure that the driving cylinder is always ventilated and in the working state, and it is difficult to continuously control the stability of the pressure in the cylinder. When the pressure in the cylinder decreases, the torque decreases, which easily causes the clutch to fail to work as mentioned in the background art.

[0005] To achieve the above object, the present application provides the following technical solution: A pneumatic friction brake with a quick-installation split structure includes a shaft tube, a flange disk rotatably sleeved on the shaft tube, a mating steel sheet axially moving inside the flange disk, a friction plate axially moving on the shaft tube, a push disk sleeved outside the shaft tube for driving the friction plate and the mating steel sheet to move close to the flange disk, a pressure disk rotatably sleeved at one end of the shaft tube away from the flange disk, and a driving mechanism sleeved on the shaft tube and fixedly connected to the pressure disk for driving the push disk to move.

[0006] In order to solve the problem that although the existing friction clutch can achieve the braking purpose, in the working conditions that require long-term engagement, it is necessary to ensure that the driving cylinder is always ventilated and in the working state, it is difficult to continuously control the stability of the pressure in the cylinder. When the pressure in the cylinder decreases, the torque drops, which easily leads to the clutch being unable to work. The driving mechanism includes a cylinder block fixedly connected to the pressure plate, a braking spring with two ends respectively connected to the cylinder block and the push plate for moving the push plate close to the flange, and a piston axially moving inside the cylinder block and fixedly connected to the push plate. An air inlet hole is opened on the cylinder block for inflating the cylinder block to make the piston drive the push plate to move away from the flange. After the brake pressure source is ventilated, the cylinder block inflates the inside of the air inlet hole. The piston arranged inside is affected by the air pressure force, so that the piston axially moves to the right, compressing the braking spring arranged on the side, so that the braking spring drives the push plate arranged on the side to move, and multiple groups of paired steel sheets and friction plates are separated. On the contrary, when the pressure source in the cylinder block is cut off, under the action of the braking spring, the piston makes the piston push the push plate to axially move to the left, and the push plate presses multiple groups of paired steel sheets and friction plates, and the brake is engaged again, better meeting the working conditions that require long-term engagement. Moreover, the split piston structure and the split internal gear disk and cylinder seat structure are convenient for processing and installation and save costs.

[0007] Preferably, in order to solve the problem of convenient installation, the shaft tube is connected to the flange through a first precision bearing arranged outside. By arranging the first precision bearing, the normal rotation of the shaft tube can be ensured, and the installation can be facilitated by arranging the flange.

[0008] Preferably, in order to solve the problem of convenient movement of the push plate and the piston, the side of the push plate close to the piston and the side of the piston close to the push plate are grooved, and the braking spring is fixedly connected between the groove of the push plate and the groove of the piston. When the pressure source is not ventilated, under the action of the braking spring on the push plate and the piston, the brake can be ensured to be in the engaged state, better meeting the working conditions that require long-term engagement.

[0009] Preferably, in order to solve the problem of cylinder block sealing, two groups of sealing rings are arranged between the cylinder block and the piston. By arranging the sealing rings, the cylinder block and the piston are sealed, and the sealing performance is improved.

[0010] Preferably, the pressure plate is rotationally connected to the shaft tube through a second precision bearing arranged outside.

[0011] Preferably, the shaft tube is connected to the friction plate through a spline sleeve. When the shaft tube rotates, it is connected to the friction plate through the spline sleeve, so that the shaft tube can be better braked and is convenient to use.

[0012] The quick - assembly split - structure pneumatic friction brake, when the pressure source of the brake is ventilated, the cylinder body fills air into the intake hole. The piston arranged inside is subjected to the air pressure force, causing the piston to move axially to the right, compressing the brake spring arranged on the side. Thus, the brake spring drives the push plate arranged on the side to move, separating multiple pairs of counter - steel sheets and friction sheets. Conversely, when the pressure source in the cylinder body is cut off from the air, under the action of the brake spring, the piston makes the piston push the push plate to move axially to the left, and the push plate presses multiple pairs of counter - steel sheets and friction sheets, and the brake is combined again, better meeting the working conditions that need to be combined for a long time. Moreover, the split - piston structure, the split - internal gear disk and the cylinder seat structure are convenient for processing and installation and save costs. Brief Description of the Drawings

[0013] Figure 1 It is a front - view structural schematic diagram of a quick - assembly split - structure pneumatic friction brake;

[0014] Figure 2 It is a front - view structural schematic diagram of a normally - open friction brake.

[0015] In the figure:

[0016] 1. Shaft tube; 2. Flange; 3. Counter - steel sheet; 4. Friction sheet; 5. Push plate; 6. Pressure plate; 7. Driving mechanism; 71. Cylinder body; 711. Intake hole; 72. Brake spring; 73. Piston; 8. Sealing ring; 9. First precision bearing; 10. Second precision bearing. Detailed Embodiments

[0017] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present application.

[0018] Embodiment 1

[0019] This embodiment provides a quick - assembly split - structure pneumatic friction brake. As Figure 1-2 shown, the quick - assembly split - structure pneumatic friction brake includes a shaft tube 1, a flange 2 rotatably sleeved on the shaft tube 1, counter - steel sheets 3 axially moving inside the flange 2, friction sheets 4 axially moving on the shaft tube 1, a push plate 5 sleeved outside the shaft tube 1 for driving the friction sheets 4 and the counter - steel sheets 3 to move closer to the flange 2, a pressure plate 6 rotatably sleeved at one end of the shaft tube 1 away from the flange 2, and a driving mechanism 7 sleeved on the shaft tube 1 and fixedly connected to the pressure plate 6 for driving the push plate 5 to move;

[0020] During use, the multi-group of paired steel sheets 3 and friction plates 4 arranged on the side are pressed by the push plate 5. The multi-group of paired steel sheets 3 and friction plates 4 are arranged adjacent to each other in a cross pattern to enhance the frictional force, thus making braking more convenient and easy to use.

[0021] The driving mechanism 7 includes a cylinder block 71 fixedly connected to the pressure plate 6, a braking spring 72 with two ends respectively connected to the cylinder block 71 and the push plate 5 for moving the push plate 5 closer to the flange 2, and a piston 73 axially moving inside the cylinder block 71 and fixedly connected to the push plate 5. An air inlet hole 711 is provided on the cylinder block 71 for inflating the cylinder block 71 to drive the piston 73 to drive the push plate 5 to move away from the flange 2.

[0022] During use, when the brake pressure source is ventilated, the cylinder block 71 inflates the inside of the air inlet hole 711. The piston 73 provided inside is subjected to the air pressure force, causing the piston 73 to axially move to the right, compressing the braking spring 72 arranged on the side, so that the braking spring 72 drives the push plate 5 arranged on the side to move, and the multi-group of paired steel sheets 3 and friction plates 4 are separated. On the contrary, when the pressure source in the cylinder block 71 is cut off from the air, the piston 73, under the action of the braking spring 72, causes the piston 73 to push the push plate 5 to axially move to the left, and the push plate 5 presses the multi-group of paired steel sheets 3 and friction plates 4, and the brake is combined again, better meeting the working conditions that need to be combined for a long time. Moreover, the split piston 73 structure, the split internal gear disk and cylinder seat structure are convenient for processing and installation and save costs.

[0023] Specifically, the shaft tube 1 is connected to the flange 2 through the first precision bearing 9 arranged outside. By setting the first precision bearing 9, the normal rotation of the shaft tube 1 can be ensured, and the installation is convenient through the setting of the flange 2.

[0024] Furthermore, the side of the push plate 5 close to the piston 73 and the side of the piston 73 close to the push plate 5 are grooved. The braking spring 72 is fixedly connected between the groove of the push plate 5 and the groove of the piston 73. When the pressure source is not ventilated, under the action of the braking spring 72 on the push plate 5 and the piston 73, the brake can be ensured to be in a combined state, better meeting the working conditions that need to be combined for a long time.

[0025] Even further, two groups of sealing rings 8 are arranged between the cylinder block 71 and the piston 73. Through the arranged sealing rings 8, the cylinder block 71 and the piston 73 are sealed to improve the sealing performance.

[0026] Among them, the pressure plate 6 is rotatably connected to the shaft tube 1 through the second precision bearing 10 arranged outside.

[0027] It should be noted that the shaft tube 1 is connected to the friction plate 4 through a spline sleeve. When the shaft tube 1 rotates, it is connected to the friction plate 4 through the spline sleeve, so that the shaft tube 1 can be better braked, and it is convenient to use.

[0028] The above are only the preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application should cover within the protection scope of the present application according to the technical solution and its concept of the present application by making equivalent replacements or changes.

Claims

1. A quick - installation split - type pneumatic friction brake, comprising a shaft tube (1), a flange (2) rotatably sleeved on the shaft tube (1), a pair of counter steel sheets (3) axially moving inside the flange (2), a friction plate (4) axially moving on the shaft tube (1), a push plate (5) sleeved outside the shaft tube (1) for driving the friction plate (4) and the pair of counter steel sheets (3) to move closer to the flange (2), a pressure plate (6) rotatably sleeved at one end of the shaft tube (1) away from the flange (2), and a driving mechanism (7) sleeved on the shaft tube (1) and fixedly connected to the pressure plate (6) for driving the push plate (5) to move. It is characterized in that: The driving mechanism (7) includes a cylinder block (71) fixedly connected to the pressure plate (6), a brake spring (72) with two ends respectively connected to the cylinder block (71) and the push plate (5) for making the push plate (5) move closer to the flange (2), and a piston (73) axially moving inside the cylinder block (71) and fixedly connected to the push plate (5). An air inlet hole (711) is provided on the cylinder block (71) for inflating the cylinder block (71) to make the piston (73) drive the push plate (5) to move away from the flange (2).

2. The quick-assembly split-structure pneumatic friction brake according to claim 1, characterized in that: The shaft tube (1) is connected to the flange (2) through a first precision bearing (9) arranged outside.

3. The quick-installation split-structured pneumatic friction brake according to claim 1, wherein: One side of the push plate (5) close to the piston (73) and one side of the piston (73) close to the push plate (5) are grooved, and the brake spring (72) is fixedly connected between the groove of the push plate (5) and the groove of the piston (73).

4. The quick-installation split-structure pneumatic friction brake according to claim 1, wherein: Two sets of sealing rings (8) are arranged between the cylinder block (71) and the piston (73).

5. The quick-assembly split-structure pneumatic friction brake according to claim 1, wherein: The pressure plate (6) is rotatably connected to the shaft tube (1) through a second precision bearing (10) arranged outside.

6. The quick-installation split-structure pneumatic friction brake according to claim 1, wherein: The shaft tube (1) is connected to the friction plate (4) through a spline sleeve.

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