Pneumatic brake motor

Abstract

The utility model provides a pneumatic brake motor. The pneumatic brake motor comprises a base and a main shaft, the end cover is arranged at one end of the machine base, the main shaft is sleeved with the brake wheel disc, the brake wheel disc is arranged on the side, away from the machine base, of the end cover, and the brake wheel disc is fixedly connected with the main shaft; the pneumatic brake comprises an outer ring which is fixedly connected with the end cover, and an air pump connector is arranged on the outer ring; the inner ring is arranged on the inner side of the outer ring, a first interval exists between the inner ring and the outer ring, the first interval is used for gas filling, the brake wheel disc is sleeved with the inner ring, the inner ring can be close to or away from the brake wheel disc, and a brake friction plate is arranged on the inner side of the inner ring. The braking torque is transmitted to the braking wheel disc through the pneumatic brake, the braking effect is good, the braking wheel disc and the main shaft are in close fit and are connected through the installation key, relative rotation of the braking wheel disc and the main shaft is avoided, and the rapid braking effect is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of motors, and in particular relates to a pneumatic brake motor. Background Art

[0002] In some application scenarios where mechanical equipment needs to have a braking function, the braking system of the mechanical equipment is required to have the characteristics of fast response speed, high braking reliability, large braking torque and the ability to be used in harsh environments. For example, heavy mechanical equipment such as cranes and loaders that require large braking torque, and mechanical equipment such as printing and packaging punching machines that require precise control, etc., the existing electromagnetic brake motors have poor braking effects and are difficult to meet the use requirements in specific environments. Summary of the invention

[0003] In order to solve at least one technical problem in the prior art, the embodiment of the utility model provides a pneumatic brake motor with good braking effect. In order to achieve the above technical objectives, the technical solution adopted by the embodiment of the utility model is:

[0004] The utility model provides a pneumatic brake motor, comprising:

[0005] Machine base and spindle;

[0006] An end cover is provided at one end of the base.

[0007] A brake disc, which is sleeved on the main shaft and arranged on a side of the end cover away from the machine base, and the brake disc is fixedly connected to the main shaft;

[0008] A pneumatic brake, comprising:

[0009] An outer ring, fixedly connected to the end cover, and an air pump interface is provided on the outer ring;

[0010] An inner ring is arranged on the inner side of the outer ring and has a first gap with the outer ring, the first gap is used for gas filling, the inner ring is sleeved with the brake disc and can be close to or away from the brake disc, and a brake friction pad is arranged on the inner side of the inner ring;

[0011] When the inner ring is away from the brake disc, a second interval exists between the brake friction pad and the brake disc;

[0012] When the inner ring is close to the brake disc, the brake friction pad can be in close contact with the brake disc.

[0013] Furthermore, a plane groove is provided on one side of the end cover away from the machine base;

[0014] An extension portion is provided at one end of the pneumatic brake close to the end cover. The extension portion extends radially and is fixed in the plane groove.

[0015] Furthermore, the plane groove is provided with an assembly hole, and the extension portion is provided with a mounting hole;

[0016] The pneumatic brake motor further comprises a mounting screw, which passes through the mounting hole and is threadedly connected with the assembly hole.

[0017] Furthermore, the brake disc is tightly fitted with the main shaft.

[0018] Furthermore, the main shaft is provided with a first keyway.

[0019] A second keyway is provided on the inner side of the brake wheel, and the first keyway corresponds to the position of the second keyway.

[0020] The pneumatic brake motor further includes a mounting key disposed in the first keyway and the second keyway.

[0021] Furthermore, the main shaft also includes a shoulder.

[0022] Furthermore, it also includes a retaining ring, which is sleeved on the main shaft and arranged on the side of the brake disc away from the base.

[0023] Furthermore, it also includes a heat dissipation fan, which is sleeved on the main shaft and arranged on a side of the pneumatic brake away from the base.

[0024] Furthermore, the diameter of the cooling fan is greater than the diameter of the outer ring of the pneumatic brake.

[0025] Furthermore, it also includes a protective cover, and the protective cover is provided with a through hole, and the through hole is for the air pump interface to pass through.

[0026] The beneficial effects brought by the technical solution provided by the embodiment of the utility model are:

[0027] 1) In the embodiment of the utility model, the contact portion between the end cover and the pneumatic brake adopts a planar structure design of a planar groove and an extension portion, so as to ensure that the contact surface between the pneumatic brake and the end cover is even, and the design of the planar groove can fix the outer ring of the pneumatic brake.

[0028] 2) The embodiment of the utility model transmits braking torque to the brake disc through the pneumatic brake, and has a good braking effect. The brake disc and the main shaft are connected by a tight fit and a mounting key to avoid relative rotation between the brake disc and the main shaft and improve the effect of rapid braking.

[0029] 3) In the embodiment of the utility model, a retaining ring and a retaining shoulder are arranged on the main shaft to ensure that the brake disc is in the pneumatic brake and to prevent the brake disc from being displaced in the axial direction.

[0030] 4) In the embodiment of the utility model, the diameter of the cooling fan is larger than the diameter of the outer ring of the pneumatic brake, thereby ensuring the heat dissipation effect of the pneumatic brake motor, and the protective cover has a dust-proof effect, both of which can extend the service life of the pneumatic brake motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the structure of the pneumatic brake motor in the embodiment of the utility model.

[0032] Figure 2 It is a partial schematic diagram of the pneumatic brake motor in the embodiment of the utility model.

[0033] Figure 3 It is a schematic diagram of the structure of the end cover in the embodiment of the utility model.

[0034] Figure 4 It is a schematic diagram of the structure of the brake disc in the embodiment of the utility model.

[0035] Figure 5 It is a schematic diagram of the structure of the pneumatic brake in the embodiment of the utility model. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0037] In the description of the embodiments of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0038] In the description of the embodiments of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, it can also be the internal connection of two components, it can be a wireless connection, or it can be a wired connection. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0039] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0040] The utility model provides a pneumatic brake motor, comprising:

[0041] Machine base 1 and spindle 11;

[0042] The end cover 2 is provided at one end of the base 1.

[0043] A brake disc 3 is sleeved on the main shaft 11 and is arranged on a side of the end cover 2 away from the base 1. The brake disc 3 is fixedly connected to the main shaft 11;

[0044] Pneumatic brake 4, the pneumatic brake 4 comprises:

[0045] The outer ring 41 is fixedly connected to the end cover 2, and an air pump interface 411 is provided on the outer ring 41;

[0046] The inner ring 42 is arranged on the inner side of the outer ring 41 and has a first gap with the outer ring 41, wherein the first gap is used for gas filling, the inner ring 42 is sleeved with the brake disc 3 and can be close to or away from the brake disc 3, and a brake friction pad 43 is arranged on the inner side of the inner ring 42;

[0047] When the inner ring 42 is away from the brake disc 3, a second interval A exists between the brake friction pad 43 and the brake disc 3;

[0048] When the inner ring 42 is close to the brake disc 3 , the brake friction pad 43 can be in close contact with the brake disc 3 .

[0049] In a specific embodiment, Figure 1 As shown, those skilled in the art can know that the base 1 is also provided with a stator and a rotor, and the main shaft 11 is connected to the rotor in the base 1 and extends to the right. The right side of the base 1 is the end cover 2, the brake disc 3 is sleeved on the main shaft 11, and the pneumatic brake 4 is sleeved on the brake disc 3.

[0050] Before braking, air is not inflated into the first gap through the air pump interface 411. At this time, the inner ring 42 of the pneumatic brake 4 is away from the brake disc 3, and a second gap A exists between the brake friction pad 43 and the brake disc 3. The main shaft 11 and the brake disc 3 are in a rotating state.

[0051] During braking, air is inflated into the first interval through the air pump interface 411. Since the outer ring 41 is fixedly connected to the end cover 2, the position of the outer ring 41 remains fixed. At this time, the inner ring 42 moves inward and approaches the brake disc 3, so that the brake friction pad 43 can be close to the brake disc 3 and transmit the braking torque to the brake disc 3, so that the brake disc 3 gradually stops rotating. Since the brake disc 3 is fixedly connected to the main shaft 11, the brake disc 3 can also drive the main shaft 11 to stop rotating, thereby achieving a braking effect.

[0052] The pneumatic brake 4 is fixedly connected to the end cover 2. The fixed connection method is not limited. In a specific embodiment, Figure 3 As shown, a plane groove 21 is provided on the side of the end cover 2 facing away from the base 1;

[0053] An extension portion 44 is disposed at one end of the pneumatic brake 4 close to the end cover 2 . The extension portion 44 extends radially and is fixed in the plane groove 21 .

[0054] The plane groove 21 and the extension 44 can ensure that the left side of the pneumatic brake 4 is in plane contact with the right side of the end cover 2, thereby preventing the pneumatic brake 4 from being displaced during the braking process and improving the safety of the pneumatic brake motor. The depth of the plane groove 21 and the thickness of the extension 44 can be adjusted as needed.

[0055] Further, the plane groove 21 is provided with an assembly hole, and the extension portion 44 is provided with a mounting hole 440;

[0056] The pneumatic brake motor further includes a mounting screw, which passes through the mounting hole 440 and is threadedly connected to the assembly hole.

[0057] The number of the assembly holes and the mounting holes 440 is not limited. In a specific embodiment, Figure 3 and Figure 5 As shown, eight assembly holes are provided on the plane groove 21, and the eight assembly holes are evenly spaced along the circumference. Eight mounting holes 440 are provided on the extension portion 44, and the positions of the mounting holes 440 correspond one to one with the positions of the assembly holes. The pneumatic brake motor includes eight mounting screws, and any mounting screw passes through a mounting hole 440 and is threadedly connected to an assembly hole. The design is reasonable and the structure is stable, which avoids relative movement between the pneumatic brake 4 and the end cover 2 during braking.

[0058] The brake disc 3 is fixedly connected to the main shaft 11. In a specific embodiment, the brake disc 3 is tightly matched with the main shaft 11 to ensure that the main shaft 11 and the brake disc 3 rotate in unison. Furthermore, two threaded holes are provided on the side of the brake disc 3 away from the base 1, and the center line of the two threaded holes passes through the central axis of the brake disc 3. This structure facilitates the disassembly of the brake disc 3. When disassembling, a tool with a bolt can be placed in the threaded hole, and the tool can be pulled to the right to remove the brake disc 3.

[0059] Furthermore, the main shaft 11 is provided with a first keyway.

[0060] A second key groove 31 is provided on the inner side of the brake wheel 3, and the first key groove corresponds to the second key groove 31.

[0061] The pneumatic brake motor further includes a mounting key 5 , and the mounting key 5 is disposed in the first keyway and the second keyway 31 .

[0062] like Figure 4 As shown, this structure can further ensure that the brake disc 3 and the main shaft 11 do not rotate relative to each other, and during braking, the tight fit and the mounting key 5 are conducive to rapid braking and improved braking efficiency.

[0063] Furthermore, the main shaft 11 also includes a shoulder 6 .

[0064] like Figure 2 As shown, the shoulder 6 is conducive to the rapid positioning of the brake disc 3, is easy to install, and can ensure that the brake disc 3 is in the inner ring 42 of the pneumatic brake 4, thereby ensuring the effective transmission of the braking torque of the pneumatic brake 4.

[0065] Furthermore, it also includes a retaining ring 7, which is sleeved on the main shaft 11 and is arranged on the side of the brake disc 3 away from the base 1, such as Figure 2 As shown, the retaining ring 7 can prevent the brake disc 3 from moving axially on the main shaft 11, ensuring that the brake disc 3 is always in a reasonable position.

[0066] Furthermore, it also includes a cooling fan 8, which is sleeved on the main shaft 11 and arranged on the side of the pneumatic brake 4 away from the base 1. The cooling fan 8 can extend the service life of the pneumatic brake motor and avoid loss due to overheating during the operation of the pneumatic brake motor.

[0067] Furthermore, the diameter of the cooling fan 8 is greater than the diameter of the outer ring 41 of the pneumatic brake 4. This structure can ensure that air flows to the base 1, thereby dissipating the heat of the entire pneumatic brake motor and improving the heat dissipation effect.

[0068] Furthermore, it also includes a protective cover 9, which is provided with a through hole for the air pump interface 411 to pass through. The protective cover 9 can prevent dust, ensure the cleanliness of the inside of the pneumatic brake motor, and extend the service life of the pneumatic brake motor.

[0069] Finally, it should be noted that the above specific implementation methods are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to examples, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A pneumatic brake motor, characterized in that: include: A machine base (1) and a spindle (11); An end cover (2) is provided at one end of the machine base (1). a brake wheel disc (3) sleeved on the main shaft (11) and arranged on a side of the end cover (2) facing away from the machine base (1), the brake wheel disc (3) being fixedly connected to the main shaft (11); A pneumatic brake (4), the pneumatic brake (4) comprising: An outer ring (41) is fixedly connected to the end cover (2), and an air pump interface (411) is provided on the outer ring (41); an inner ring (42) disposed on the inner side of the outer ring (41) and having a first gap between the inner ring (42) and the outer ring (41), wherein the first gap is used for gas filling, the inner ring (42) being sleeved with the brake disc (3) and being able to approach or move away from the brake disc (3), and a brake friction pad (43) being disposed on the inner side of the inner ring (42); When the inner ring (42) is away from the brake disc (3), a second gap (A) exists between the brake friction pad (43) and the brake disc (3); When the inner ring (42) is close to the brake disc (3), the brake friction pad (43) can be in close contact with the brake disc (3).

2. The pneumatic brake motor according to claim 1, characterized in that: A plane groove (21) is provided on a side of the end cover (2) facing away from the machine base (1); An extension portion (44) is provided at one end of the pneumatic brake (4) close to the end cover (2); the extension portion (44) extends radially and is fixedly disposed in the plane groove (21).

3. The pneumatic brake motor according to claim 2, characterized in that: The plane groove (21) is provided with an assembly hole, and the extension portion (44) is provided with a mounting hole (440); The pneumatic brake motor also includes a mounting screw, which passes through the mounting hole (440) and is threadedly connected to the assembly hole.

4. The pneumatic brake motor according to claim 1, characterized in that: The brake wheel disc (3) is tightly fitted with the main shaft (11).

5. The pneumatic brake motor according to claim 1, characterized in that: The main shaft (11) is provided with a first keyway. A second key groove (31) is provided on the inner side of the brake wheel disc (3), and the positions of the first key groove and the second key groove (31) correspond to each other. The pneumatic brake motor further comprises a mounting key (5), wherein the mounting key (5) is arranged in the first key slot and the second key slot (31).

6. The pneumatic brake motor according to claim 1, characterized in that: The main shaft (11) also includes a stop shoulder (6).

7. The pneumatic brake motor according to claim 1, characterized in that: It also includes a retaining ring (7) which is sleeved on the main shaft (11) and is arranged on a side of the brake wheel disc (3) facing away from the machine base (1).

8. The pneumatic brake motor according to claim 1, characterized in that: It also includes a cooling fan (8), which is sleeved on the main shaft (11) and arranged on a side of the pneumatic brake (4) facing away from the machine base (1).

9. The pneumatic brake motor according to claim 8, characterized in that: The diameter of the cooling fan (8) is greater than the diameter of the outer ring (41) of the pneumatic brake (4).

10. The pneumatic brake motor according to claim 1, characterized in that: It also comprises a protective cover (9), wherein the protective cover (9) is provided with a through hole, and the through hole is used for the air pump interface (411) to pass through.

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