Voice alarm and coal mining machine

Abstract

The utility model provides a voice alarm and a coal mining machine, and relates to the technical field of alarms. The voice alarm comprises a shell, a circuit board and a voice module. The shell comprises a base and a shell body, and the base is detachably connected to the base; a containing space is arranged in the shell, a sound amplifying part is arranged on one side, far away from the base, of the shell, a plurality of sound outlet holes are formed in the sound amplifying part, the plurality of sound outlet holes form a plurality of sound outlet hole groups which are arranged in a central symmetry mode with the center of the sound amplifying part as the symmetry center, and the plurality of sound outlet holes in any sound outlet hole group are arranged along the Fibonacci spiral line path. The circuit board is arranged on the base and located in the containing space. The voice module is arranged in the accommodating space and is electrically connected with the circuit board; the voice module is used for emitting voice. The coal mining machine provided by the utility model adopts the voice alarm. According to the voice alarm and the coal mining machine provided by the utility model, the technical problem that the sound of an alarm in the prior art is relatively small can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of alarms, in particular to a voice alarm and a coal mining machine. Background Art

[0002] Voice alarms are usually installed on equipment such as fully mechanized mining and fully mechanized excavation (coal mining machines, roadheaders, etc.) to provide better auditory prompts to people during the operation of the equipment. Since the equipment will generate severe noise during operation, there are higher requirements for the decibel value provided by the voice alarm. Voice alarms are usually intrinsically safe devices and are driven by intrinsically safe power supplies. According to the maximum current requirements of intrinsic safety, the sound intensity of the voice alarm is limited. Even if the internal speaker is made well, it will be restricted by conditions. In addition, the sound holes of most voice alarms are flat in design and the sound holes are randomly arranged. The sound emitted by the speaker of this type of product will not be amplified. Utility Model Content

[0003] The technical problem solved by the utility model is how to improve the technical problem that the alarm in the prior art has a relatively small sound.

[0004] The embodiment of the present utility model can be implemented as follows:

[0005] The utility model provides a voice alarm, comprising:

[0006] The housing comprises a base and a shell, the base being detachably connected to the base; a storage space is provided in the shell, a sound amplifying portion is provided on a side of the shell away from the base, a plurality of sound holes are provided on the sound amplifying portion, the plurality of sound holes forming a plurality of groups of sound holes arranged symmetrically with the center of the sound amplifying portion as the center of symmetry, and the plurality of sound holes in any of the groups of sound holes are arranged along a Fibonacci spiral path;

[0007] A circuit board is provided on the base and is located inside the accommodation space;

[0008] A voice module is arranged inside the accommodating space and is electrically connected to the circuit board; the voice module is used to emit voice.

[0009] The beneficial effects of the voice alarm provided by the utility model compared with the prior art include:

[0010] In the voice alarm, the multiple sound holes on the sound reinforcement part form a plurality of sound hole groups, and the multiple sound holes in each sound hole group extend along the Fibonacci spiral path, so that the multiple sound holes are distributed in a radial form on the sound reinforcement part. Specifically, the multiple sound holes are denser near the center position area, and sparser away from the center position, thereby amplifying the sound of the sound reinforcement part, achieving the purpose of amplifying the sound of the voice alarm, and can improve the technical problem of the low sound of the alarm in the prior art.

[0011] Optionally, the sound expansion portion arches outward in an arc shape.

[0012] Optionally, the voice alarm further includes a waterproof and sound-permeable membrane, which is arranged between the voice module and the sound amplification part.

[0013] Optionally, the waterproof sound-permeable membrane is adhered to the inner side of the sound reinforcement part.

[0014] Optionally, the voice alarm further includes a sealing ring, which is arranged between the shell and the base.

[0015] Optionally, an annular groove is provided on the base, the sealing ring is provided in the groove, and the sealing ring protrudes out of the groove.

[0016] Optionally, the voice alarm further includes a plurality of support columns, the plurality of support columns are arranged on the base at intervals, and the circuit board is arranged on a side of the plurality of support columns away from the base.

[0017] Optionally, the voice alarm further includes a cable introduction device, which passes through the housing and extends into the accommodating space for introducing a cable to be electrically connected to the circuit board.

[0018] Optionally, a threaded hole is provided on the shell, and the cable introduction device cooperates with the threaded hole through threads.

[0019] A coal mining machine comprises the above-mentioned voice alarm.

[0020] The coal mining machine provided by the present invention adopts the above-mentioned voice alarm. The beneficial effects of the coal mining machine relative to the existing technology are the same as the beneficial effects of the above-mentioned voice alarm relative to the existing technology, which will not be repeated here. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 This is a schematic diagram of the explosion structure of the voice alarm provided in the first embodiment of the present application;

[0023] Figure 2 This is a structural diagram of the voice alarm provided in the first embodiment of the present application.

[0024] Icon: 10- voice alarm; 100- shell; 110- housing; 112- sound reinforcement part; 1121- sound outlet; 1122- sound outlet group; 120- base; 200- circuit board; 300- voice module; 400- waterproof sound-permeable membrane; 500- sealing ring; 600- support column; 700- cable entry device; 710- threaded hole. DETAILED DESCRIPTION

[0025] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0026] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0027] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0028] In the description of the present invention, it should be noted that if the terms "upper", "lower", "inside", "outside", etc. appear, the orientation or position relationship indicated is based on the orientation or position relationship shown in the accompanying drawings, or is the orientation or position relationship in which the utility model product is usually placed when in use. It is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0029] In addition, the terms "first", "second", etc., if used, are merely used to distinguish and describe, and should not be understood as indicating or implying relative importance.

[0030] It should be noted that, in the absence of conflict, the features in the embodiments of the present invention can be combined with each other.

[0031] First embodiment

[0032] The present embodiment provides a voice alarm 10, which can emit voice to achieve the purpose of alarming. The voice alarm 10 provided in the present embodiment can improve the technical problem of the existing technology that the alarm sound is relatively small.

[0033] In this example, see Figure 1 and Figure 2 The voice alarm 10 includes a shell 100, a circuit board 200 and a voice module 300. The shell 100 includes a base 120 and a shell 110, and the base 120 is detachably connected to the base 120. A storage space is provided in the shell 110, and a sound amplifying part 112 is provided on the side of the shell 110 away from the base 120. The sound amplifying part 112 is provided with a plurality of sound holes 1121, and the plurality of sound holes 1121 are used to facilitate the propagation of sound. Among them, the plurality of sound holes 1121 form a plurality of sound hole groups 1122 that are centrally symmetrically arranged with the center of the sound amplifying part 112 as the center of symmetry, and the plurality of sound holes 1121 in any sound hole group 1122 are arranged along the Fibonacci spiral path. The circuit board 200 is provided on the base 120 and is located inside the storage space. The voice module 300 is provided inside the storage space and is electrically connected to the circuit board 200; the voice module 300 is used to emit voice. Among them, in Figure 2 The holes marked in red are one of the sound outlet holes 1122 .

[0034] As described above, in the voice alarm 10, the multiple sound holes 1121 on the sound reinforcement part 112 form a plurality of sound hole groups 1122, and the multiple sound holes 1121 in each sound hole group 1122 extend along the Fibonacci spiral path, so that the multiple sound holes 1121 are radially distributed on the sound reinforcement part 112, specifically, the multiple sound holes 1121 are denser near the center position area, and sparser away from the center position, thereby amplifying the sound of the sound reinforcement part 112, achieving the purpose of sound amplification of the voice alarm 10, and can improve the technical problem of the low sound of the alarm in the prior art.

[0035] To further achieve the purpose of sound amplification, optionally, in this embodiment, the sound amplification portion 112 is arched outwardly in an arc shape. The sound amplification portion 112 is arched outwardly to form a spherical structure, which can better ensure the improvement of sound intensity, thereby achieving the purpose of sound amplification by the sound amplification portion 112, and further improving the technical problem of the low sound of the alarm in the prior art.

[0036] It should be noted that the equipment generates dust and coal dust during operation, and a spray system is needed to remove the dust. The dust removal water will inevitably splash onto the surface of the voice alarm 10, so the protection performance of the voice alarm 10 must be good, which is the prerequisite for ensuring its normal operation.

[0037] Based on this, in this embodiment, the voice alarm 10 further includes a waterproof sound-permeable membrane 400, which is disposed between the voice module 300 and the sound amplifying unit 112. The waterproof sound-permeable membrane 400 is sound-permeable and waterproof. Therefore, even if some water enters the sound outlet 1121 of the sound amplifying unit 112, the waterproof sound-permeable membrane 400 can isolate the water from the voice module 300, preventing the water from affecting the voice module 300 and improving the waterproof performance of the top of the voice alarm 10.

[0038] Optionally, in this embodiment, the waterproof sound-permeable membrane 400 is attached to the inner side of the sound amplifying portion 112. In other words, an adhesive can be directly applied to the waterproof sound-permeable membrane 400, and then the waterproof sound-permeable membrane 400 can be directly attached to the inner side of the sound amplifying portion 112. This can directly block the sound outlet 1121 and prevent water introduced through the sound outlet 1121 from bypassing the waterproof sound-permeable membrane 400 and affecting the voice module 300.

[0039] In addition, to further improve the sealing performance of the voice alarm 10, in this embodiment, the voice alarm 10 further includes a sealing ring 500, which is provided between the housing 110 and the base 120. The sealing ring 500 achieves a seal between the housing 110 and the base 120, thereby preventing water from entering the interior of the accommodation space through the gap between the housing 110 and the base 120, thereby achieving the purpose of improving the waterproof performance.

[0040] To improve the stability of the sealing ring 500 and thus the stability of the waterproof performance, an annular groove is optionally formed on the base 120, and the sealing ring 500 is disposed in the groove, with the sealing ring 500 protruding from the groove. When the housing 110 is installed on the base 120, the sealing ring 500 is compressed by the housing 110, causing the sealing ring 500 to produce a certain elastic deformation. When the sealing ring 500 produces elastic deformation, the sealing ring 500 can tightly seal the gap between the housing 110 and the base 120, thereby improving the waterproof performance.

[0041] In this embodiment, the voice alarm 10 further includes a plurality of support columns 600, which are spaced apart on the base 120. The circuit board 200 is positioned on a side of the support columns 600 away from the base 120. The provision of the support columns 600 ensures a certain distance between the circuit board 200 and the base 120. Even if a small amount of water enters the gap between the base 120 and the housing 110, it prevents contact between the water and the circuit board 200, thereby enhancing the safety of the circuit board 200. Furthermore, the provision of the support columns 600 creates a certain amount of space between the base 120 and the circuit board 200, facilitating the placement of components such as grooves and screws.

[0042] In addition, in this embodiment, the voice alarm 10 further includes a cable entry device 700, which passes through the housing 110 and extends into the accommodating space for allowing a cable to be introduced and electrically connected to the circuit board 200. Optionally, a threaded hole 710 is provided in the housing 110, and the cable entry device 700 engages with the threaded hole 710 via threads. The threaded connection of the cable entry device 700 to the housing 110 facilitates the removal and installation of the cable entry device 700 and improves the assembly stability of the cable entry device 700. Furthermore, the threaded connection improves the sealing performance between the cable entry device 700 and the threaded hole 710, thereby further enhancing the overall waterproof performance of the voice alarm 10.

[0043] In summary, in the voice alarm 10 provided in this embodiment, the multiple sound holes 1121 on the sound reinforcement portion 112 form multiple groups of sound hole groups 1122, and the multiple sound holes 1121 in each group of sound hole groups 1122 extend along the Fibonacci spiral path, so that the multiple sound holes 1121 are radially distributed on the sound reinforcement portion 112. Specifically, the multiple sound holes 1121 are denser near the center position and sparser away from the center position. This amplifies the sound output of the sound reinforcement portion 112, achieving the purpose of amplifying the sound output of the voice alarm 10, and can improve the technical problem of the low sound output of the alarm in the prior art. Furthermore, through the threaded cooperation of the waterproof and sound-permeable membrane 400, the sealing ring 500, and the cable entry device 700 with the housing 110, the overall waterproof performance of the voice alarm 10 is improved, so that the voice alarm 10 can operate normally even in a humid environment or a working environment with a certain depth of water. It has great sound intensity, long service life, high structural strength, and can meet the use requirements of different equipment and working conditions. It has good practicality, simple structure, and is easy to promote, and has great practical value.

[0044] Second embodiment

[0045] This embodiment provides a coal mining machine (not shown) that utilizes the voice alarm 10 provided in the first embodiment. Based on this, the coal mining machine can also overcome the technical problem of low alarm sound in the prior art. In addition, because the voice alarm 10 has strong waterproof performance, the coal mining machine using the voice alarm 10 can be used in humid environments or environments with a certain depth of water, thereby expanding the application scenarios of the coal mining machine and meeting the diverse needs of users.

[0046] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A voice alarm, characterized in that: include: The housing comprises a base and a shell, the base being detachably connected to the base; a storage space is provided in the shell, a sound amplifying portion is provided on a side of the shell away from the base, a plurality of sound holes are provided on the sound amplifying portion, the plurality of sound holes forming a plurality of groups of sound holes arranged symmetrically with the center of the sound amplifying portion as the center of symmetry, and the plurality of sound holes in any of the groups of sound holes are arranged along a Fibonacci spiral path; A circuit board is provided on the base and is located inside the accommodation space; A voice module is arranged inside the accommodating space and is electrically connected to the circuit board; the voice module is used to emit voice.

2. The voice alarm according to claim 1, characterized in that: The sound amplifying portion arches outwards in an arc shape.

3. The voice alarm according to claim 1, characterized in that: The voice alarm further comprises a waterproof sound-permeable membrane, which is arranged between the voice module and the sound amplification part.

4. The voice alarm according to claim 3, characterized in that: The waterproof sound-permeable membrane is adhered to the inner side of the sound reinforcement part.

5. The voice alarm according to claim 1, characterized in that: The voice alarm further comprises a sealing ring, which is arranged between the shell and the base.

6. The voice alarm according to claim 5, characterized in that: An annular groove is provided on the base, the sealing ring is arranged in the groove, and the sealing ring protrudes out of the groove.

7. The voice alarm according to claim 1, characterized in that: The voice alarm further comprises a plurality of supporting columns, which are arranged on the base at intervals, and the circuit board is arranged on a side of the plurality of supporting columns away from the base.

8. The voice alarm according to claim 1, characterized in that: The voice alarm further comprises a cable introduction device, which passes through the housing and extends into the accommodating space for introducing a cable into the housing and electrically connecting the cable to the circuit board.

9. The voice alarm according to claim 8, characterized in that: A threaded hole is provided on the shell, and the cable introduction device is matched with the threaded hole through threads.

10. A coal mining machine, characterized in that: The device comprises the voice alarm as claimed in any one of claims 1 to 9.

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