Silent drum type band-type brake structure device

Abstract

The utility model relates to the technical field of band-type brake structures, and discloses a mute drum-type band-type brake structure device, which comprises a brake drum, a brake shoe and a brake bottom plate, the brake bottom plate is fixed with an external platform, the brake shoe comprises a steel back plate and a friction lining, the steel back plate is hinged with the brake bottom plate, and the friction lining is arranged on the brake drum. The friction linings are made of low-noise organic friction materials. According to the silent drum type band-type brake structure device, the friction linings are made of low-noise organic friction materials, the friction coefficient between the brake shoe and the brake drum is effectively reduced, so that the generation of friction noise is reduced, the vibration frequency of the brake shoe is changed through the silencing grooves, and the generation of resonance noise is avoided; and vibration energy in the braking process is absorbed through the arrangement of the shock pad and the buffer pad, noise transmission is further reduced, abrasion and looseness of parts caused by unstable braking are reduced, the reliability of the band-type brake device is improved, and the service life of the band-type brake device is prolonged.

Description

TECHNICAL FIELD

[0001] The utility model relates to a clutch structure technical field, concretely is a kind of mute drum type clutch structure device. BACKGROUND

[0002] Drum type clutch as a commonly used brake device, is widely used in elevator, crane and various mechanical equipment, however, the existing drum type clutch has the problem of big noise in the working process, the friction between the traditional drum type clutch brake shoe and brake drum often produces sharp noise, not only can cause noise pollution to working environment, affect the work experience of operator, also can interfere with the normal operation of surrounding other equipment.

[0003] The existing patent (announcement number: CN206615956U) discloses a kind of mute drum type clutch structure device, it is especially through the design of air hole in the process of using, utilize the automatic exhaust heat dissipation of steel ball of air hole, make clutch work more stable and reliable, it is convenient to repair, realize mute, do not produce noise influence.

[0004] Although the above-mentioned patent utilizes the automatic exhaust heat dissipation of steel ball of air hole in the process of using, by setting clutch shell and clutch arm, the left and right ends of clutch shell are provided with clutch sliding seat, magnet is arranged on the clutch sliding seat, air hole with built-in steel ball is opened on the clutch shell, make clutch work more stable and reliable, but its noise elimination effect is small in the process of using, so that drum type clutch structure can still produce big noise in the process of using, and the above-mentioned patent lacks damping measure, can cause loosening and damage of component after long time use, reduce the service life and reliability of clutch device. UTILITY MODEL CONTENTS

[0005] In view of the deficiencies of prior art, the utility model provides a kind of mute drum type clutch structure device, with the advantages of multistage vibration damping stable regulation, solve the problems raised in the above background art.

[0006] To achieve the above object, the utility model provides the following technical scheme: a kind of mute drum type clutch structure device, including brake drum, brake shoe and brake bottom plate, the brake bottom plate is fixed with the platform of outside, the brake shoe includes steel backboard and friction lining, the steel backboard and brake bottom plate are hinged, the friction lining is made of low-noise organic friction material, the inner side of friction lining is provided with base, the base is connected between steel backboard by bolt piece, the back of base is provided with multiple sound-absorbing grooves, sound-absorbing groove is arc-shaped distribution, and depth and width are optimized design according to the size of base and brake requirement, recess is set up on the outer side of steel backboard, rubber buffer block is set in recess, the base is contacted with rubber buffer block.

[0007] Further, the contact part of the steel back plate and the brake bottom plate is provided with a damping pad, and the outer surface of the hinge shaft of the steel back plate is sleeved with a rubber bushing.

[0008] Through the above scheme, the vibration generated during the hinge connection of the steel back plate and the brake bottom plate is reduced, and the noise generated by the vibration transmitted to the mechanical structure is reduced.

[0009] Further, the brake bottom plate is made of steel plate material, and the surface thereof is subjected to flattening treatment, and the brake bottom plate is provided with a mounting groove matched with the brake shoe.

[0010] Through the above scheme, the brake shoe is used for mounting, and the brake shoe can be accurately installed and stably work.

[0011] Further, the front surface of each of the two steel back plates is fixed with a fixed plate, a reset spring is mounted between the two fixed plates, the reset spring is in a stretched state, and the reset spring is made of high-strength spring steel.

[0012] Through the above scheme, the elastic force of the reset spring can drive the fixed plate to move, so as to pull back the brake shoe to the initial position after braking, and separate the brake shoe from the brake drum.

[0013] Further, a hydraulic cylinder is arranged between the two steel back plates, a push plate is slidably connected to the end of the steel back plate, and the output end of the hydraulic cylinder is in contact with the push plate.

[0014] Through the above scheme, the contact between the hydraulic cylinder and the push plate enables the hydraulic cylinder to drive the push plate to move, and then push the brake shoe to rotate.

[0015] Further, the top end of each of the two steel back plates is fixed with a side plate, a threaded rod is arranged on the side surface of the side plate, the threaded rod penetrates through the corresponding side plate and is threadedly connected with the side plate, and the other end of the threaded rod is rotatably connected with the push plate.

[0016] Through the above scheme, the rotation of the threaded rod can drive the push plate to move, and then adjust the distance from the output end of the hydraulic cylinder to the push plate, and adjust the sensitivity of the brake shoe.

[0017] Further, the output end of the hydraulic cylinder is provided with a buffer pad, and the buffer pad is made of silica gel material.

[0018] Through the above scheme, the impact force and noise generated by the movement of the output end of the hydraulic cylinder and the push plate can be reduced.

[0019] Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:

[0020] Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:The mute drum type holding brake structure device effectively reduces the friction coefficient between the brake shoe and the brake drum by using low noise organic friction material to make the friction lining, thereby reducing the generation of friction noise, the sound reduction groove changes the vibration frequency of the brake shoe, avoids the generation of resonance noise, the setting of the shock pad and the buffer pad absorbs the vibration energy in the braking process, further reduces the noise propagation, reduces the wear and loosening of parts caused by unstable braking, and improves the reliability and service life of the holding brake device. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is the overall perspective view of the present application;

[0022] Figure 2 It is the overall structure view of the brake shoe of the present application;

[0023] Figure 3 It is the side view of the overall rubber buffer block of the present application;

[0024] Figure 4 It is the overall steel back plate of the present application.

[0025] In the figure:

[0026] 1, brake drum;

[0027] 2, brake shoe; 201, steel back plate; 202, friction lining; 203, base; 204, rubber buffer block;

[0028] 3, brake bottom plate;

[0029] 4, fixed plate; 5, reset spring; 6, hydraulic cylinder; 7, push plate; 8, side plate; 9, threaded rod; 10, buffer pad. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0031] Please refer to Figure 1 , Figure 2 and Figure 3The mute drum type holding brake structure device in the embodiment comprises a brake drum 1, a brake shoe 2 and a brake bottom plate 3, the brake bottom plate 3 is fixed with the platform outside, the brake shoe 2 comprises a steel back plate 201 and a friction lining 202, the steel back plate 201 is hinged with the brake bottom plate 3, the friction lining 202 is made of low noise organic friction material, the inner side of the friction lining 202 is provided with a base 203, the base 203 is connected with the steel back plate through a bolt, the back of the base 203 is provided with a plurality of sound reduction grooves, the sound reduction grooves are distributed in an arc shape, and the depth and width are optimized according to the size of the base 203 and the brake requirement, the outer side of the steel back plate 201 is provided with a groove, and a rubber buffer block 204 is arranged in the groove, and the base 203 is in contact with the rubber buffer block 204.

[0032] Please refer to Figure 1 、 Figure 2 and Figure 3 , the contact part of the steel back plate 201 and the brake bottom plate 3 is provided with a damping pad, the outer surface of the hinge shaft of the steel back plate 201 and the brake bottom plate 3 is sleeved with a rubber bushing, so as to reduce the noise generated by the vibration transmission to the mechanical structure during the hinge process of the steel back plate 201 and the brake bottom plate 3, the brake bottom plate 3 is made of steel plate material, the surface of which is subjected to flatness treatment, and the brake bottom plate 3 is provided with a mounting groove matched with the brake shoe 2 for mounting the brake shoe 2, so as to ensure that the brake shoe 2 can be accurately installed and stably work.

[0033] Please refer to Figure 1 、 Figure 2 and Figure 4 , the front surface of each of the two steel back plates 201 is fixed with a fixed plate 4, a reset spring 5 is arranged between the two fixed plates 4, the reset spring 5 is in a stretched state, the reset spring 5 is made of high-strength spring steel, and the elastic force of the reset spring 5 can drive the fixed plate 4 to move, so as to pull back the brake shoe 2 to the initial position after the brake is finished, so that the brake shoe 2 is separated from the brake drum 1, a hydraulic cylinder 6 is arranged between the two steel back plates 201, a push plate 7 is slidably connected to the end of the steel back plate 201, the output end of the hydraulic cylinder 6 is in contact with the push plate 7, the contact between the hydraulic cylinder 6 and the push plate 7 enables the hydraulic cylinder 6 to drive the push plate 7 to move, and then drive the brake shoe 2 to rotate.

[0034] Please refer to Figure 1 、 Figure 2 and Figure 3The top end of the two steel back plates 201 is fixed with a side plate 8, the side surface of the side plate 8 is provided with a threaded rod 9, the threaded rod 9 penetrates through the corresponding side plate 8 and is threadedly connected with the side plate 8, the other end of the threaded rod 9 is rotationally connected with the push plate 7, the rotation of the threaded rod 9 can drive the push plate 7 to move, thereby adjusting the distance from the output end of the hydraulic cylinder 6 to the push plate 7, adjusting the sensitivity of the brake shoe 2, the output end of the hydraulic cylinder 6 is installed with a buffer pad 10, the buffer pad 10 is made of silica gel material, which can reduce the impact force and noise generated by the output end of the hydraulic cylinder 6 during movement and the push plate 7.

[0035] The working principle of the above embodiment is that when the brake operation is performed, the hydraulic cylinder 6 is started, the output end of the hydraulic cylinder 6 is in contact with the push plate 7 and pushes the push plate 7 to move, thereby driving the steel back plate 201 to rotate, the brake shoe 2 is in contact with the brake drum 1, and the deceleration braking is completed through the friction between the friction lining 202 and the brake drum 1.

[0036] It should be noted that before use, the threaded rod 9 can be rotated to drive the push plate 7 to move, adjust the distance from the output end of the hydraulic cylinder 6 to the push plate 7, and adjust the sensitivity of the brake shoe 2.

[0037] The working principle of the above embodiment is that when the brake operation is performed, the hydraulic cylinder 6 is started, the output end of the hydraulic cylinder 6 is in contact with the push plate 7 and pushes the push plate 7 to move, thereby driving the steel back plate 201 to rotate, the brake shoe 2 is in contact with the brake drum 1, and the deceleration braking is completed through the friction between the friction lining 202 and the brake drum 1.

[0038] The working principle of the above embodiment is that when the brake operation is performed, the hydraulic cylinder 6 is started, the output end of the hydraulic cylinder 6 is in contact with the push plate 7 and pushes the push plate 7 to move, thereby driving the steel back plate 201 to rotate, the brake shoe 2 is in contact with the brake drum 1, and the deceleration braking is completed through the friction between the friction lining 202 and the brake drum 1.

[0039] After the brake is completed, the fixed plate 4 can be moved by the elastic force of the reset spring 5, and the brake shoe 2 is pulled back to the initial position after the brake is completed, so that the brake shoe 2 is separated from the brake drum 1. Before use, the threaded rod 9 can be rotated according to the use requirement to drive the push plate 7 to move, the distance between the push plate 7 and the hydraulic cylinder 6 can be adjusted, so that the output end of the hydraulic cylinder 6 can contact the push plate 7 through a shorter stroke, and the brake operation can be completed more quickly, and the sensitivity of the brake shoe 2 can be adjusted.

[0040] It should be noted that, in this document, relational terms such as first and second and the like can be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. Additionally, unless otherwise specified, terms such as "first" and "second" are used merely as labels, and are not intended to impose numerical requirements on their objects.

[0041] While the embodiments of the present application have been illustrated and described, it will be clear to those skilled in the art that various changes, modifications, substitutions and alterations can be made hereto without departing from the principles and spirit of the application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A mute drum type band brake structure device comprising a brake drum (1), a brake shoe (2) and a brake bottom plate (3), characterized in that: The brake bottom plate (3) is fixed with the platform outside, the brake shoe (2) includes a steel back plate (201) and a friction lining (202), the steel back plate (201) and the brake bottom plate (3) are hinged, the friction lining (202) is made of low noise organic friction material, the inner side of the friction lining (202) is provided with a base (203), the base (203) is connected with the steel back plate by bolt, the back of the base (203) is provided with a plurality of sound reduction grooves, the sound reduction grooves are arc-shaped distribution, and the depth and width are optimized according to the size of the base (203) and the brake requirement, the outer side of the steel back plate (201) is provided with a groove, and the rubber buffer block (204) is arranged in the groove, the base (203) is in contact with the rubber buffer block (204).

2. A mute drum-type holding brake structure apparatus according to claim 1, characterized in that: The contact part of the steel back plate (201) and the brake bottom plate (3) is provided with a damping pad, and the outer surface of the hinge shaft of the steel back plate (201) and the brake bottom plate (3) is sleeved with a rubber bushing.

3. The mute drum-type holding brake structure apparatus according to claim 1, characterized by: The brake bottom plate (3) is made of steel plate material, and the surface thereof is subjected to flattening treatment, and the brake bottom plate (3) is provided with a mounting groove matched with the brake shoe (2).

4. The mute drum-type holding brake structure apparatus according to claim 1, characterized by: The front surface of the steel back plate (201) is fixed with a fixed plate (4), the fixed plate (4) is provided with a reset spring (5), the reset spring (5) is in a stretched state, and the reset spring (5) is made of high-strength spring steel.

5. The mute drum-type holding brake structure apparatus according to claim 1, characterized by: The steel back plate (201) is provided with a hydraulic cylinder (6), the end of the steel back plate (201) is slidably connected with a push plate (7), and the output end of the hydraulic cylinder (6) is in contact with the push plate (7).

6. The mute drum-type holding brake structure apparatus according to claim 1, characterized by: The top end of the steel back plate (201) is fixed with a side plate (8), the side surface of the side plate (8) is provided with a threaded rod (9), the threaded rod (9) penetrates through the corresponding side plate (8) and is threadedly connected with the side plate (8), and the other end of the threaded rod (9) is rotatably connected with the push plate (7).

7. The mute drum-type holding brake structure apparatus according to claim 5, characterized by: The output end of the hydraulic cylinder (6) is provided with a buffer pad (10), and the buffer pad (10) is made of silica gel material.

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