Spreading system and sand throwing fire truck

Abstract

The present invention discloses a scattering system and a sand throwing fire extinguishing vehicle. The scattering system comprises: a driving device; an impeller, the driving device is connected to the impeller to drive the impeller to rotate, and the impeller is used to throw out fire-fighting sand; an auger, the driving device is connected to the auger to drive the auger to rotate, and the auger is used to transport the fire-fighting sand to the impeller; an auger transmission device, connected between the driving device and the auger, the driving device drives the auger to rotate through the auger transmission device, and the auger transmission device comprises a clutch. The scattering system provided by the present invention helps to solve the problem of fire-fighting sand blocking when the sand throwing fire extinguishing vehicle is working.

Description

Technical Field

[0001] The invention relates to the field of emergency rescue machinery, in particular to a scattering system and a sand-scattering fire-extinguishing vehicle. Background Art

[0002] The sand throwing fire extinguisher can be used to extinguish special fires that are not suitable for water, foam, and carbon dioxide, and plays a huge role in improving fire extinguishing efficiency and reducing rescue risks. The scattering system of the sand throwing fire extinguisher in the prior art includes an impeller for centrifugally scattering fire sand and an auger (also called a screw conveyor) for supplying fire sand to the impeller. Figure 1 The sand-throwing fire-fighting vehicle disclosed in the Chinese patent application CN109896528A shown in the figure mainly includes a sand box assembly and a spreading system. The sand box assembly includes a cargo box 601 for storing fire-fighting sand, a feeding bottom plate 602 arranged at the bottom of the cargo box for conveying fire-fighting sand to the auger 603, and the auger 603 for twisting the fire-fighting sand into the spreading system; the spreading system 7 includes a mounting bracket 701, a rotatable impeller 702 for scattering fire-fighting outwards, and a throwing cylinder 703 arranged in the throwing direction of the throwing impeller. The fire-fighting sand is thrown outwards through the throwing cylinder under the centrifugal spreading action of the impeller 702.

[0003] The impeller and the auger of the scattering system of the prior art sand-throwing fire extinguisher are mainly rigidly connected and transmitted. Once the auger is fed too much or the impeller's throwing barrel is blocked, fire-fighting sand will accumulate at the auger or the impeller. Due to the large resistance caused by the accumulation of fire-fighting sand, the auger cannot rotate, and the impeller cannot throw out the fire-fighting sand by centrifugal scattering, which causes the sand-throwing fire extinguisher to be blocked and unable to work normally. Summary of the invention

[0004] The purpose of the present invention is to provide a sand throwing fire extinguisher which is helpful to solve the problem of fire fighting sand blocking during operation.

[0005] The first aspect of the present invention discloses a sand throwing system for a sand-throwing fire-extinguishing vehicle, comprising:

[0006] Drive device;

[0007] An impeller, wherein the driving device is drivingly connected to the impeller to drive the impeller to rotate, and the impeller is used to throw out fire fighting sand;

[0008] An auger, the driving device is drivingly connected to the auger to drive the auger to rotate, and the auger is used to transport the fire-fighting sand to the impeller;

[0009] The auger transmission device is connected between the driving device and the auger, and the driving device drives the auger to rotate through the auger transmission device, and the auger transmission device includes a clutch.

[0010] In some embodiments, the clutch is an electromagnetic clutch.

[0011] In some embodiments, the scattering system further comprises a blockage detection device, and the blockage detection device is used to detect whether the sand-throwing fire-extinguishing vehicle is blocked when scattering sand.

[0012] In some embodiments, the scattering system further comprises a control device, which is connected to the material blockage detection device and the clutch signal and is configured to control the closing and opening of the clutch according to the detection result of the material blockage detection device.

[0013] In some embodiments, the blockage detection device includes a torque sensor for detecting the torque of the impeller and / or the auger.

[0014] In some embodiments, the blockage detection device includes a vibration sensor for detecting the vibration magnitude of the impeller and / or the auger.

[0015] In some embodiments, the scattering system further comprises an impeller transmission device, wherein the impeller transmission device is disposed between the driving device and the impeller, and the driving device drives the impeller to rotate via the impeller transmission device.

[0016] In some embodiments, the driving device includes a hydraulic motor, and the impeller transmission device also includes a first reducer, a first coupling, a second coupling and a transmission shaft, the hydraulic motor and the first reducer are connected through the first coupling, the first reducer and the transmission shaft are connected through the second coupling, and the transmission shaft is connected to the impeller.

[0017] In some embodiments, the auger transmission is disposed between the impeller and the auger.

[0018] In some embodiments, the impeller transmission device includes a first reducer, and the auger transmission device includes a second reducer connected to the clutch, the second reducer is arranged between the clutch and the auger, the power input end of the first reducer is at right angles to the power output end, and the power input end of the second reducer is at right angles to the power output end.

[0019] The second aspect of the present invention discloses a sand-throwing fire-extinguishing vehicle, comprising the above-mentioned scattering system.

[0020] Based on the scattering system provided by the present invention, the driving device transmits the auger through an auger transmission device provided with a clutch. When the sand throwing extinguisher car is blocked, the power of the auger can be cut off by disconnecting the clutch to prevent the auger from continuing to rotate and supplying fire sand to the impeller, thereby avoiding aggravating the blockage of the impeller and reducing the load of the driving device at the same time, so that the driving device can drive the impeller to rotate to centrifugally throw out the blocked fire sand, thereby reducing and eliminating the blockage of the sand throwing extinguisher car.

[0021] The sand-throwing fire-extinguishing vehicle provided by the present invention also has corresponding beneficial effects.

[0022] Further features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the attached drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0024] Figure 1 It is a structural schematic diagram of a sand throwing fire extinguisher in the prior art;

[0025] Figure 2 It is a partial structural schematic diagram of a sand-throwing fire-extinguishing vehicle according to an embodiment of the present invention. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, method and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, method and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in an accompanying drawing, it does not need to be further discussed in subsequent drawings.

[0028] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0029] Figure 2 The scattering system of the sand-throwing fire-extinguishing vehicle shown includes an impeller 6 , a drive device and an auger 9 .

[0030] The auger, the driving device is connected to the auger driving device to drive the auger to rotate, and the auger is used to transport fire fighting sand to the impeller;

[0031] The auger transmission device is connected between the driving device and the auger. The driving device drives the auger to rotate through the auger transmission device. The auger transmission device includes a clutch.

[0032] The impeller 6 is used to rotate to centrifugally throw the fire-fighting sand outward; the driving device is connected to the impeller 6 to drive the impeller 6 to rotate; the driving device is connected to the auger 9 to drive the auger 9 to rotate, and the auger 9 is connected to the driving device through an auger transmission device. The driving device drives the auger 9 to rotate through the auger transmission device to transport the fire-fighting sand to the impeller 6, and the auger transmission device includes a clutch 7.

[0033] The driving device can independently drive the impeller 6 and the auger 9 to rotate. In some embodiments, the driving device can also drive the auger 9 to rotate, and then transmit power to the impeller 6 through the auger 9 to indirectly drive the impeller 6 to rotate. At this time, the auger 9 is connected between the driving device and the impeller 6. In some embodiments, the driving device can also be as follows Figure 2 As shown, the impeller 6 is first driven to rotate, and then the power is transmitted to the auger 9 through the impeller 6 to indirectly drive the auger 9 to rotate. At this time, the auger transmission device is connected between the impeller 6 and the auger 9.

[0034] The scattering system of this embodiment can conveniently cut off the drive of the drive device to the auger 9 without cutting off the drive to the impeller 6 by providing the auger transmission device with a clutch 7. Figure 2In the embodiment in which the driving device first drives the impeller 6 to rotate, and then transmits power to the auger 9 through the impeller 6 to indirectly drive the auger 9 to rotate, when the sand-throwing extinguishing vehicle is working, the clutch 7 is closed, and the driving device drives the impeller 6 and the auger 9 to rotate. The impeller 6 transmits power to the auger 9 through the auger transmission device to rotate the auger 9. The auger 9 rotates to transport the fire-fighting sand to the impeller 6. The rotating impeller 6 throws the fire-fighting sand transported by the auger 9 outward by centrifugal force, and the thrown fire-fighting sand is output outward through a throwing barrel arranged in the throwing direction of the impeller 6 to perform a fire-fighting operation. When the sand-throwing fire extinguisher is blocked during operation, for example, the auger 9 delivers too much fire-fighting sand to the impeller 6, causing the fire-fighting sand near the impeller 6 to be blocked near the impeller 6, for example, at the throwing tube, the clutch 7 of the transmission device is disconnected, the transmission between the impeller 6 and the auger 9 is disconnected, the power of the driving device is no longer transmitted to the auger 9, the auger 9 stops rotating, the load of the driving device is reduced, and the impeller 6 is driven to rotate, and the blocked fire-fighting sand is centrifugally thrown out. After the blockage of the sand-throwing fire extinguisher is eliminated, the clutch 7 is closed, and the sand-throwing fire extinguisher can work normally again.

[0035] In the scattering system of the present embodiment, the driving device drives the auger 6 through an auger transmission device provided with a clutch 7. When the sand throwing extinguisher is blocked, the clutch 7 can be disconnected to cut off the power of the auger 9, preventing the auger 9 from continuing to rotate and supplying fire sand to the impeller 6, thereby avoiding aggravating the blockage of the impeller 6 and reducing the load of the driving device at the same time, so that the driving device can drive the impeller 6 to rotate normally to centrifugally throw out the blocked fire sand, thereby reducing and eliminating the blockage of the sand throwing extinguisher.

[0036] In some embodiments, the clutch 7 is an electromagnetic clutch. By setting the clutch as an electromagnetic clutch, the opening and closing of the clutch can be electrically controlled, making the operation more convenient.

[0037] In some embodiments, the scattering system further comprises a blockage detection device, which is used to detect whether the sand-throwing fire-extinguishing vehicle is blocked when scattering sand.

[0038] In some embodiments, the scattering system further includes a control device, which is connected to the material blocking detection device and the clutch 7 by signal, and the control device is configured to control the closing and disconnection of the clutch 7 according to the detection result of the material blocking detection device. The control device of this embodiment detects whether the sand throwing extinguishing vehicle is blocked by the material blocking detection device, and automatically controls the disconnection or closing of the clutch 7, so that the sand throwing extinguishing vehicle can be automatically cleaned when the sand throwing extinguishing vehicle is blocked, thereby improving the safety and automation capability of the sand throwing extinguishing vehicle.

[0039] In some embodiments, the material blocking detection device includes a torque sensor for detecting the torque of the impeller 6 and / or the auger 9. The torque sensor detects the torque of the impeller 6 and the auger 9. When the sand throwing fire extinguisher is blocked, that is, the impeller 6 or the auger 9 is blocked, the rotation of the impeller 6 or the auger 9 will be blocked, and the torque of the impeller 6 or the auger 9 will suddenly increase. When the control device receives the torque of the impeller 6 or the auger 9 detected by the torque sensor and increases to exceed the threshold, the control device determines that the sand throwing fire extinguisher is blocked, and the control device can thereby signal the clutch 7 to disconnect and cut off the power transmitted to the auger 9.

[0040] In some embodiments, the blockage detection device includes a vibration sensor for detecting the vibration magnitude of the impeller 6 and / or the auger 9. When the sand throwing extinguisher is blocked, the vibration of the impeller 6 or the auger 9 will also increase, and it can be determined whether the sand throwing extinguisher is blocked during operation by detecting the vibration degree of the impeller 6 or the auger 9.

[0041] In some embodiments, the scattering system further comprises an impeller transmission device, which is disposed between the driving device and the impeller 6 , and the driving device drives the impeller 6 to rotate via the impeller transmission device.

[0042] In some embodiments, the driving device includes a hydraulic motor 1, and the impeller transmission device includes a first reducer 3, a first coupling 2, a second coupling 4, and a transmission shaft 5 connected to the impeller 6. The hydraulic motor 1 and the first reducer 3 are connected through the first coupling 2, and the first reducer 3 and the transmission shaft 5 are connected through the second coupling 4. The sand throwing fire extinguisher is also provided with a hydraulic pump, which supplies oil to the hydraulic motor 1 by taking power from the chassis of the sand throwing fire extinguisher. The hydraulic motor 1 drives the impeller 6 to rotate through the transmission shaft 5 after reducing speed and increasing torque through the first reducer.

[0043] In some embodiments, Figure 2 As shown, the auger transmission device is arranged between the impeller 6 and the auger 9. In some embodiments, the first coupling 2 and the second coupling 4 are elastic couplings, the hydraulic motor 1 is mounted on the mounting bracket of the sand throwing fire truck, the power input end of the first reducer 3 is provided with a flange, the power input end of the first reducer 3 is coaxial with the power output end of the hydraulic motor 1, one end of the first coupling 2 is connected to the power output end of the hydraulic motor 1 through a spline, and the other end is connected to the power input end of the first reducer 3 through a flat key. One end of the second coupling 4 is connected to the power output end of the first reducer 3 through a flat key, and the other end of the second coupling 4 is connected to the power input end of the transmission shaft 5 through a flat key. The power input end of the impeller 6 is connected to the power output end of the transmission shaft 5 through a bolt, the power output end of the impeller 6 is connected to the power input end of the clutch through a flat key, the power output end of the clutch 7 is connected to the power input end of the second reducer 8 through a flat key, and the power output end of the second reducer 8 is connected to the power input shaft of the auger 9 through a spline.

[0044] In some embodiments, the impeller transmission device includes a first reducer 3, the auger transmission device includes a second reducer 8, the clutch 7 is connected to the auger 9 through the second reducer 8, the power input end of the first reducer 3 is at right angles to the power output end, and the power input end of the second reducer 8 is at right angles to the power output end. This arrangement can make the arrangement of the auger 9, auger transmission device, impeller 6, impeller transmission device, and drive device of the sand throwing fire fighting vehicle more compact, and reduce the space occupied by the throwing system.

[0045] In some embodiments, the driving device includes a power device such as an engine or a motor.

[0046] In some embodiments, the control device described above can be a general-purpose processor, a programmable logic controller (PLC), a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any appropriate combination thereof for performing the functions described in the present invention.

[0047] In some embodiments, a sand-throwing fire-extinguishing vehicle is also disclosed, comprising the above-mentioned scattering system.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the specific implementation methods of the present invention can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the present invention, which should be included in the scope of the technical solution for protection of the present invention.

Claims

1. A sand throwing system for a fire extinguishing vehicle, characterized in that: include: Drive device; An impeller (6), wherein the driving device is drivingly connected to the impeller (6) to drive the impeller (6) to rotate, and the impeller (6) is used to throw out fire sand. The scattering system also includes an impeller transmission device, and the impeller transmission device is arranged between the driving device and the impeller (6). The driving device drives the impeller (6) to rotate through the impeller transmission device. The driving device includes a hydraulic motor (1). The impeller transmission device also includes a first reducer (3), a first coupling (2), a second coupling (4) and a transmission shaft (5). The hydraulic motor (1) and the first reducer (3) are connected through the first coupling (2), the first reducer (3) and the transmission shaft (5) are connected through the second coupling (4), and the transmission shaft (5) is connected to the impeller (6); An auger (9), the driving device being drivingly connected to the auger (9) to drive the auger (9) to rotate, the auger (9) being used to transport the fire-fighting sand to the impeller (6); An auger transmission device is connected between the driving device and the auger (9) and between the impeller and the auger, the driving device first drives the impeller, and then drives the auger (9) to rotate through the impeller and the auger transmission device, the auger transmission device comprises a clutch (7), the auger transmission device further comprises a second reducer (8) connected to the clutch (7), the second reducer (8) is arranged between the clutch (7) and the auger (9), the power input end of the first reducer (3) is at right angles to the power output end, the power input end of the second reducer (8) is at right angles to the power output end, and the sand throwing and extinguishing device is used to extinguish the sand. When the train is blocked, the clutch is disconnected to cut off the power of the auger, preventing the auger from continuing to rotate and supplying fire sand to the impeller, thereby avoiding aggravating the blockage of the impeller and reducing the load of the driving device, so that the driving device can drive the impeller to rotate to centrifugally throw out the blocked fire sand, thereby reducing and eliminating the blockage of the sand throwing fire extinguishing train; the throwing system also includes a blockage detection device, which is used to detect whether the sand throwing fire extinguishing train is blocked when throwing sand, and the throwing system also includes a control device, which is connected to the blockage detection device and the clutch signal, and is configured to: control the closing and opening of the clutch (7) according to the detection result of the blockage detection device.

2. The scattering system of the sand throwing fire extinguisher as claimed in claim 1, characterized in that: The clutch (7) is an electromagnetic clutch.

3. The scattering system of the sand throwing fire extinguisher as claimed in claim 1, characterized in that: The material blockage detection device comprises a torque sensor for detecting the torque magnitude of the impeller (6) and / or the auger (9).

4. The scattering system of the sand throwing fire extinguisher as claimed in claim 1, characterized in that: The material blockage detection device comprises a vibration sensor for detecting the vibration magnitude of the impeller (6) and / or the auger (9).

5. A sand throwing fire truck, characterized in that: The invention comprises the scattering system according to any one of claims 1 to 4.

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