Rapid rotation braking device based on centrifugal force control

Abstract

The utility model discloses a rapid rotation braking device based on centrifugal force control, which relates to the technical field of mechanical rotation braking and comprises a base, a limiting piece and a braking support. The base is used for the rotating shaft to pass through and is fixedly connected with the rotating shaft; the limiting piece is arranged on the circumferential side wall of the base and is in sliding connection with the base, so that the limiting piece slides in the radial direction under the action of centrifugal force generated by rotation of the base; the rotating shaft penetrates through the brake support, the base is located in the brake support, a first limiting block is arranged on the brake support, and when the base rotates and the limiting piece slides in the direction away from the base, the limiting piece collides with the first limiting block to limit rotation of the base. In this way, braking is achieved through the centrifugal force change generated when the shaft rotates, and the response speed is far higher than that of a traditional friction braking mode.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical rotation brake technology field especially, and it is a kind of quick rotation brake device based on centrifugal force control. BACKGROUND

[0002] The existing mechanical brake device is mostly adopted friction brake mode, and there are problems such as slow brake response, friction plate easy to wear and tear etc. In addition, the friction brake system usually needs to rely on auxiliary system such as hydraulic system, electromagnetic system, once the auxiliary system fails, brake failure can be caused, and product quality problem or safety accident is caused.

[0003] Therefore, it is urgent to provide a brake device with rapid response and long service life. INVENTION CONTENTS

[0004] The utility model discloses a kind of quick rotation brake devices based on centrifugal force control to solve at least one problem in the above background art.

[0005] To achieve the above-mentioned purpose, a kind of quick rotation brake device based on centrifugal force control of the utility model, comprising:

[0006] Base, limiting piece and brake support;

[0007] The base is used for rotating shaft to pass through, and the base is fixedly connected with the rotating shaft;

[0008] The limiting piece is arranged on the circumferential side wall of the base, and the limiting piece is slidingly connected with the base, so that the limiting piece slides along the radial direction under the action of centrifugal force generated by the rotation of the base;

[0009] The rotating shaft penetrates the brake support, and the base is located in the brake support, and a first limiting block is arranged on the brake support, when the base rotates and the limiting piece slides away from the base, the limiting piece collides with the first limiting block to limit the rotation of the base.

[0010] Preferably, the base includes a first base, a second base and a third base;

[0011] The first base and the second base are detachably connected, when the first base and the second base are combined, the first base and the second base surround the rotating shaft;

[0012] The third base is at least provided one, and the third base is detachably arranged on the circumferential side wall of the first base and the second base, and the third base extends along the radial direction;

[0013] The limiting piece is inserted into the third base, and the limiting piece is slidingly connected with the third base.

[0014] Preferably, a first sliding groove is arranged on the third base, and the limiting piece is in sliding connection with the first sliding groove.

[0015] A second sliding groove is arranged on one of the inner wall of the first sliding groove or the side wall of the limiting piece, and a second protruding limiting block is arranged on the other one, and the length of the second sliding groove is less than the length of the third base in the radial direction.

[0016] The second sliding groove is used to prevent the limiting piece from sliding out of the third base.

[0017] Preferably, a third sliding groove is arranged on the surface of one of the first base or the second base in contact with the other one, and a third protruding limiting block is arranged on the contact surface of the other one, and the third limiting block is in sliding connection with the third sliding groove, so as to combine or disassemble the first base and the second base.

[0018] Preferably, a limiting key pin is arranged on the rotating shaft, and a key groove is arranged on the inner wall of the first base and / or the second base, and when the first base and the second base surround the rotating shaft, the limiting key pin is inserted into the key groove to fix the first base and the second base to the rotating shaft.

[0019] Preferably, the first limiting block is located on the top of the base.

[0020] Preferably, the rotating shaft comprises a first rotating speed and a second rotating speed, and the first rotating speed is greater than the second rotating speed.

[0021] When the rotating shaft rotates at the first rotating speed, the centrifugal force received by the limiting piece is greater than the gravity of the limiting piece itself, and when the rotating shaft rotates at the second rotating speed, the centrifugal force received by the limiting piece is less than the gravity of the limiting piece itself.

[0022] Preferably, the first sliding groove penetrates through the first base.

[0023] Preferably, a plurality of third bases are arranged, and the plurality of third bases are uniformly arranged along the circumferential side wall of the first base and the second base assembly.

[0024] Preferably, the base, the limiting piece and the brake support are made of alloy steel material.

[0025] Based on this, the beneficial effects of the utility model are as follows:

[0026] The base can rotate synchronously with the rotating shaft, the limiting piece is slidably connected to the circumferential side wall of the base, the limiting piece can freely move along the radial direction, when the base rotates rapidly, the limiting piece slides out radially in the direction away from the base under the action of centrifugal force and collides with the brake support outside, and then the rotating shaft is braked, and when the base rotates slowly, the centrifugal force received by the limiting piece is smaller than the gravity of the limiting piece, the limiting piece will not slide out, so that the base and the rotating shaft can rotate normally, compared with the traditional friction type braking mode, the rotating speed is higher, and the wear and tear problem of the parts during long time use is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0027] Other features, objects, and advantages of the application will become more apparent from the following detailed description of non-limiting embodiments made with reference to the drawings:

[0028] Figure 1 A structure schematic view of a quick rotation braking device according to an embodiment of the present application is schematically shown;

[0029] Figure 2 A side view of a quick rotation braking device according to an embodiment of the present application is schematically shown;

[0030] Figure 3 A connection schematic view of a first base and a second base according to an embodiment of the present application is schematically shown;

[0031] Figure 4 A cooperation installation view of a third base and a limiting piece according to an embodiment of the present application is schematically shown;

[0032] Figure 5 A use state view of a limiting piece not sliding out according to an embodiment of the present application is schematically shown;

[0033] Figure 6 A use state view of a limiting piece sliding out according to an embodiment of the present application is schematically shown;

[0034] The reference signs are as follows: 10 - base, 101 - first base, 102 - second base, 103 - third base, 1031 - first sliding groove, 1032 - second sliding groove, 1033 - second limiting block, 104 - third sliding groove, 105 - third limiting block, 106 - key groove, 20 - limiting piece, 30 - brake support, 301 - first limiting block, 40 - rotating shaft, 401 - limiting key pin. DETAILED DESCRIPTION

[0035] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0036] The terms used in the embodiments of the present application are only for the purpose of describing the specific embodiments, and are not intended to limit the present application. The singular forms "a", "an" and "the" used in the embodiments of the present application are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0037] It should be understood that although the terms first, second, third, etc. may be used in the embodiments of the present application to describe relevant structures, these relevant structures should not be limited by these terms. These terms are only used to distinguish relevant structures from each other.

[0038] Depending on the context, the word "if" as used herein can be interpreted to mean "when" or "while" or "upon" or "before" or "in response to determining" or "in response to detecting" (that a stated condition or event has occurred). Similarly, the phrase "if determined" can be interpreted to mean "when determined" or "upon determining" or "when detecting (a stated condition or event)".

[0039] It should be noted that the terms "upper", "lower", "left", "right", etc. described in the embodiments of the present application are described from the angle shown in the drawings, and should not be understood as limiting the embodiments of the present application. In addition, in the context, it should also be understood that when referring to an element being formed "on" or "under" another element, it can not only be directly formed "on" or "under" another element, but also indirectly formed "on" or "under" another element through an intermediate element.

[0040] Figure 1 A structural schematic diagram of a quick rotation braking device according to an embodiment of the present application is shown schematically, Figure 2 A side view of a quick rotation braking device according to an embodiment of the present application is shown schematically, as Figure 1 、 2 A quick rotation braking device based on centrifugal force control according to an embodiment of the present application comprises:

[0041] a base 10, a limiting piece 20 and a braking bracket 30;

[0042] The base 10 is used for the rotating shaft 40 to pass through, and the base 10 is fixedly connected with the rotating shaft 40;

[0043] The limiting piece 20 is arranged on the circumferential side wall of the base 10, and the limiting piece 20 is in sliding connection with the base 10, so that the limiting piece 20 slides in the radial direction under the action of centrifugal force generated by the rotation of the base 10;

[0044] The rotating shaft 40 penetrates the brake support 30, and the base 10 is located in the brake support 30, and the first limiting block 301 is arranged on the brake support 30, when the base 10 rotates and the limiting piece 20 slides away from the base 10, the limiting piece 20 touches the first limiting block 301 to limit the rotation of the base 10.

[0045] In this way, the utility model discloses a limiting piece 20 arranged on the circumferential side wall of the base 10 slides, and the centrifugal force generated by the synchronous rotation of the base 10 and the rotating shaft 40 is used to realize control, when the rotating speed of the rotating shaft 40 is relatively fast, the centrifugal force is greater than the gravity of the limiting piece 20 at this time, so that the limiting piece 20 slides outwards, and then collides with the first limiting block 301 on the brake support 30 outside the base 10 and stops rotating, realizing braking, and when the rotating speed of the rotating shaft 40 is relatively small, the centrifugal force is smaller than the gravity of the limiting piece 20 at this time, so that the limiting piece 20 does not slide out and touch the first limiting block 301, and then the base 10 and the rotating shaft 40 can continue to rotate, through the mechanical structure limiting and braking mode, the problems of slow braking speed and easy wear of the friction plate in the traditional technology are solved, and the service life of the whole device is improved.

[0046] Further, Figure 3 The connecting schematic view of the first base and the second base in an embodiment of the utility model is schematically shown, Figure 4 The cooperation and installation view of the third base and the limiting piece in an embodiment of the utility model is schematically shown, Figure 3 、 4 As shown in the figure:

[0047] The base 10 comprises a first base 101, a second base 102 and a third base 103;

[0048] The first base 101 and the second base 102 are detachably connected, when the first base 101 and the second base 102 are combined, the first base 101 and the second base 102 surround the rotating shaft 40;

[0049] The third base 103 is at least one, and the third base 103 is detachably arranged on the circumferential side wall of the first base 101 and the second base 102, and the third base 103 extends in the radial direction;

[0050] The limiting piece 20 is inserted into the third base 103, and the limiting piece 20 is in sliding connection with the third base 103.

[0051] Specifically, the first base 101 and the second base 102 are arranged in an arc shape, which is the same as the outer contour of the rotating shaft 40, a third sliding groove 104 is arranged on the surface of one of the first base 101 or the second base 102 which contacts the other, and a protruding third limiting block 105 is arranged on the surface of the other which contacts the one, the third limiting block 105 is in sliding connection with the third sliding groove 104, so that the first base 101 and the second base 102 are combined and installed or disassembled, and the whole is convenient to disassemble and assemble and convenient to maintain.

[0052] A limiting key pin 401 is arranged on the circumferential side wall of the rotating shaft 40, and a key groove 106 is arranged on the inner wall of the first base 101 and / or the second base 102, when the first base 101 and the second base 102 surround the rotating shaft 40, the limiting key pin 401 is inserted into the key groove 106 to fix the first base 101 and the second base 102 with the rotating shaft 40, so that the base 10 can rotate synchronously when the rotating shaft 40 rotates, and the limiting member 20 on the base 10 is subjected to centrifugal force.

[0053] The third base 103 can be arranged in one or multiple, and is detachably connected with the circumferential side wall of the first base 101 and the second base 102 through screws.

[0054] The third base 103 can be arranged in four, six or eight, when the third base 103 is arranged in multiple, it is uniformly and spacedly arranged along the circumferential side wall of the combined assembly of the first base 101 and the second base 102, and the setting of the multiple third bases 103 can accelerate the braking time and realize the effect of rapid braking.

[0055] Further, Figure 5 A use state diagram of the limiting member not sliding out of an embodiment of the utility model is schematically shown, Figure 6 A use state diagram of the limiting member sliding out of an embodiment of the utility model is schematically shown, Figures 3-6 As shown in the drawings:

[0056] A first sliding groove 1031 is arranged on the third base 103, the limiting member 20 is in sliding connection with the first sliding groove 1031, a second sliding groove 1032 is arranged on one of the inner wall of the first sliding groove 1031 or the side wall of the limiting member 20, and a protruding second limiting block 1033 is arranged on the other, in the radial direction, the length of the second sliding groove 1032 is less than the length of the third base 103, and the second sliding groove 1032 is used to prevent the limiting member 20 from sliding out of the third base 103.

[0057] Specifically, the first limiting block 301 is arranged on the brake support 30 and corresponds to the top of the base 10, and extends a certain distance towards the base 10, and the first sliding groove 1031 is arranged on the third base 103, and the limiting piece 20 is slidingly connected in the first sliding groove 1031, and the limiting piece 20 can reciprocate in the first sliding groove 1031 by the centrifugal force of the rotation of the base 10 or the gravity of the limiting piece 20 itself.

[0058] At the same time, since the base 10 is rotating, when the opening of the first sliding groove 1031 is arranged downward, the limiting piece 20 will move downward due to the gravity and the centrifugal force to slide out of the first sliding groove 1031, so a limiting structure needs to be arranged between the two to prevent the limiting piece 20 from sliding out, thereby causing the brake to fail to work.

[0059] The limiting structure can be a second sliding groove 1032 and a second limiting block 1033, which is inserted into the second sliding groove 1032 to slide, or other structures that can achieve the sliding of the limiting piece 20 in the first sliding groove 1031 and prevent the limiting piece 20 from sliding out of the first sliding groove 1031.

[0060] At the same time, the first sliding groove 1031 penetrates the third base 103, and the limiting piece 20 is installed in the third base 103 from the side of the third base 103 close to the rotating shaft 40, and the third base 103 is fixed to the circumferential sidewall of the first base 101 and the second base 102, thereby achieving the axial limiting of the limiting piece 20.

[0061] Further, the rotating shaft 40 includes a first rotation speed and a second rotation speed, and the first rotation speed is greater than the second rotation speed.

[0062] When the rotating shaft 40 rotates at the first rotation speed, the centrifugal force received by the limiting piece 20 is greater than the gravity of the limiting piece 20, and when the rotating shaft 40 rotates at the second rotation speed, the centrifugal force received by the limiting piece 20 is less than the gravity of the limiting piece.

[0063] In this way, the brake is achieved by centrifugal force control, so that the device brakes correspondingly fast, and there is no friction in the braking process, avoiding wear of related structures and prolonging the service life.

[0064] Further, the base 10, the limiting piece 20 and the brake support 30 are all made of high-strength alloy steel, which has good wear resistance and impact resistance.

[0065] In summary, the device can realize low-speed operation and high-speed braking, is suitable for scenes needing to limit the rotating speed or high-speed rotation which may cause safety hazards, realizes braking by utilizing the centrifugal force change generated during shaft rotation, the corresponding speed is much faster than the traditional friction type braking mode, there is no friction in the braking process, wear of the friction plate is avoided, and the service life of the device is prolonged; the whole is modularized, and is easy to process, disassemble, assemble and maintain.

[0066] The above description is merely preferred embodiments of the present application. It should be understood by those skilled in the art that the disclosed range of the present application is not limited to the technical solutions formed by the specific combinations of the above technical features, and should also cover other technical solutions formed by any combinations of the above technical features or equivalent features without departing from the disclosed concept. For example, the above features are replaced with the technical features disclosed in the present application (but not limited to) having similar functions to form technical solutions.

Claims

1. A rapid rotation braking device based on centrifugal force control, characterized by, The utility model relates to a rotating shaft fixing device, including: A base, a limiting piece and a brake support; The base is used for rotating shaft to pass through, the base is fixedly connected with the rotating shaft; The limiting piece is arranged on the circumferential side wall of the base, and the limiting piece is slidingly connected with the base to make the limiting piece slide along the radial direction under the action of centrifugal force generated by the rotation of the base; The rotating shaft penetrates the brake support, and the base is located in the brake support, and a first limiting block is arranged on the brake support, when the base rotates and the limiting piece slides away from the base, the limiting piece collides with the first limiting block to limit the rotation of the base.

2. A rapid rotation braking device based on centrifugal force control according to claim 1, characterized in that, The base includes a first base, a second base and a third base; The first base and the second base are detachably connected, when the first base and the second base are combined, the first base and the second base surround the rotating shaft; The third base is arranged at least one, the third base is detachably arranged on the circumferential side wall of the first base and the second base, and the third base extends along the radial direction; The limiting piece is inserted into the third base, and the limiting piece is slidingly connected with the third base.

3. A rapid rotation braking device based on centrifugal force control according to claim 2, characterized in that, A first sliding groove is arranged on the third base, and the limiting piece is slidingly connected with the first sliding groove; A second sliding groove is arranged on one of the inner wall of the first sliding groove or the side wall of the limiting piece, and a protruding second limiting block is arranged on the other, along the radial direction, the length of the second sliding groove is less than the length of the third base; The second sliding groove is used to prevent the limiting piece from sliding out of the third base.

4. A rapid rotation braking device based on centrifugal force control according to claim 2, characterized in that, A third sliding groove is arranged on the surface of one of the first base or the second base in contact with the other, and a protruding third limiting block is arranged on the contact surface of the other, the third limiting block is slidingly connected with the third sliding groove to make the first base and the second base combined installation or disassembly.

5. A rapid rotation braking device based on centrifugal force control according to claim 2, characterized in that, A limiting key pin is arranged on the rotating shaft, and a key groove is arranged on the inner wall of the first base and / or the second base, when the first base and the second base surround the rotating shaft, the limiting key pin is inserted into the key groove to make the first base and the second base fixedly connected with the rotating shaft.

6. A rapid rotation braking device based on centrifugal force control according to claim 1, characterized in that, The first limiting block is located at the top of the base and extends towards the base.

7. A rapid rotation braking device based on centrifugal force control according to claim 6, characterized in that, The rotating shaft includes a first rotation speed and a second rotation speed, and the first rotation speed is greater than the second rotation speed; When the rotating shaft rotates at the first rotation speed, the centrifugal force received by the limiting piece is greater than the gravity of the limiting piece, and when the rotating shaft rotates at the second rotation speed, the centrifugal force received by the limiting piece is less than the gravity of the limiting piece.

8. A rapid rotation braking device based on centrifugal force control according to claim 3, characterized in that, The first sliding groove penetrates the third base.

9. A rapid rotation braking device based on centrifugal force control according to claim 2, characterized in that, The third base is arranged multiple, multiple third base is evenly spaced along the circumferential side wall of the first base and the second base assembly.

10. A rapid rotation braking device based on centrifugal force control according to claim 1, characterized in that, The base, the limiting piece and the brake support are made of alloy steel material.

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