The Double Girder Gantry Crane is commonly employed to handle large wokring pieces outdoors, which has strong hoisting capacity, large span, good stability, etc. Double girder Gantry Crane self-weight is larger than that of Single Girder Gantry Crane even for the same hoisting capacity weight, and the cost is also higher. According to the main girder structure, double girder gantry crane can be divided into 2 types: box girder and truss girder. Generally the box-type girder is the most commonly seen type.
Weihua also provide European standard (FEM and DIN standard) double girder gantry crane with the following features:
1. Adopt modularization design for lifting mechanism, FEM/DIN standard, light weight
2. High-strength alloy-steel forging wheels
3. No welded legs for profile steel
4. Capsule cab with broad vision
5. Rectangular steel- pipe handrail
6. Hard tooth surface reducer imported from Germany
7. Power supplied by engineering drag chain
8. World's leading anti-sway control technology
10. Advanced fabricated technology
11. Low-energy and maintenance-free
Capacity: 10t - 100t or custom
Span: 6m - 35m or custom
Lift height: 6m - 12m or custom
Work duty: A5, A6 or custom
Sling device: hook or other
Packing: Wooden case, rain cloth, reinforced bar, etc.
Weihua is a China leading crane manufacturer with 31 years experience. You can find our products all over China, also in 110 countries such as the UK, Russia, USA, Thailand, Ukraine, Egypt, Mexico, Pakistan, Malaysia, etc. We have confidence to provide you with the right products and professional solutions. Welcome to visit Weihua.
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Description of the Invention The utility model relates to a water meter, in particular to a tamper-proof intelligent water meter and system.
BACKGROUND OF THE INVENTION The existing intelligent water meter is preset with a ball switch inside the watch to prevent the user from disassembling the watch. The tilt angle of the ball switch is the preset alarm angle. When the water meter shakes on a plane and the angle reaches the preset alarm angle, the tamper alarm function will be triggered. However, this method has certain limitations. The first is that the angle adjustment of the ball switch during production is not well controlled and the deviation is large; the second is that the trigger action response is not sensitive enough, and the water meter tilt angle must reach a certain angle to trigger the alarm. That is, if the user shakes the meter in the process of disassembling the watch and does not exceed the preset alarm angle, the tamper detection unit of the water meter will not alarm. Therefore, there is a hidden danger that the tamper protection is not in place or may be missed.
SUMMARY OF THE INVENTION The purpose of the utility model is to provide a tamper-proof intelligent water meter and system with higher sensitivity and reliability. 
The figure is a functional block diagram of a specific embodiment of the present invention
In a specific embodiment, the acceleration acquisition unit includes a single axis acceleration sensor. The angle acquisition unit includes a three-axis acceleration sensor or a dual-axis inclination sensor. The acceleration acquisition unit and the angle acquisition unit are respectively electrically connected with the microprocessor. In a specific embodiment, the solenoid valve is electrically connected to the microprocessor through the drive module, and the tamper alarm module is electrically connected to the microprocessor.
A water meter detachment prevention system of the utility model comprises an intelligent water meter provided with a microprocessor, comprising: an acceleration acquisition unit disposed on the base meter housing and electrically connected with the microprocessor for obtaining the acceleration information of the water meter and transmitting To the microprocessor; the angle obtaining unit is disposed on the base table housing and is electrically connected with the microprocessor for obtaining the tilt angle information of the water meter and transmitting it to the microprocessor; remotely monitoring the terminal and communicating with the microprocessor.
In another embodiment, the solenoid valve is electrically connected to the microprocessor via the drive module. The tamper alarm module is electrically connected to the microprocessor.
The utility model has the advantages that the ball switch is not required inside the watch of the utility model, the acceleration sensor is used to sense whether there is a disassembly table behavior, the sensitivity and the reliability are higher, the real-time monitoring is possible, and the alarm angle can be preset.
For more information, please download the full specification of the patent.
More information on the latest technology of meter technology patents, please continue to pay attention to [instrument patents]
[Instrument latest patent] A tamper intelligent water meter and system
[Chinese instrument network meter patent] creative limit, instrumentation invention. Today we introduced a national invention-granting patent - a tamper-evident smart water meter and system. The patent was applied by Hunan Weiming Energy Technology Co., Ltd. and was authorized to be announced on December 28, 2016. The technical scheme of the utility model is: a tamper-proof intelligent water meter, which includes a base table, and an acceleration acquisition unit and an angle acquisition unit disposed on the base table. The acceleration acquisition unit is used to obtain acceleration information of the water meter, and is used by the angle acquisition unit. Get the tilt angle information of the water meter.