Prefabricated piezoelectric film weighing device

Abstract

The utility model provides a prefabricated piezoelectric film weighing device, which comprises a prefabricated strip, a mounting groove arranged at the top of the prefabricated strip, a piezoelectric film sensor arranged in the mounting groove, a first fixing plate arranged at one end of the mounting groove, a through hole arranged on the first fixing plate, and a signal line connected with the piezoelectric film sensor. One end, opposite to the piezoelectric film sensor, of the signal line penetrates through the through hole and is connected with a dynamic acquisition instrument connector, the dynamic acquisition instrument connector is used for being connected with a dynamic acquisition instrument so as to dynamically weigh the vehicle, the top end of the piezoelectric film sensor is connected with a first colloid, and the opposite side walls of the prefabricated strip are connected with a plurality of reinforcing strips. By arranging the prefabricated strips and forming the mounting grooves, batch manufacturing can be conducted before site construction, a large amount of working hours are saved, the duration of road control is shortened, and the construction efficiency is improved; by arranging a plurality of reinforcing strips, the installation stability and reliability of the prefabricated piezoelectric film weighing device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of road vehicle monitoring, in particular to a prefabricated piezoelectric film weighing device. Background Art

[0002] Vehicle weighing is an important method to control overweight and overloaded vehicles on road traffic. It helps to understand the traffic conditions of overweight vehicles on roads and bridges and provide data basis for administrative law enforcement.

[0003] Compared with the traditional static weighing of floor scales, dynamic weighing technology has been increasingly adopted. In the dynamic weighing method, piezoelectric film sensors are usually used to collect signals, and the piezoelectric film sensors are laid along the direction of vehicle travel.

[0004] In the existing technology, the installation of piezoelectric film sensors requires cutting the road surface and cleaning it before installation, pouring glue on the top of the piezoelectric film sensor, and waiting for the glue to solidify. The process is time-consuming, has great restrictions on road surface control, long on-site construction period, and low construction efficiency. Utility Model Content

[0005] In view of the deficiencies in the prior art, the purpose of the present invention is to provide a prefabricated piezoelectric film weighing device, aiming to solve the problems of long construction period and low construction efficiency in on-site installation of piezoelectric film sensors in the prior art.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:

[0007] A prefabricated piezoelectric film weighing device comprises a prefabricated strip, a mounting groove is provided at the top of the prefabricated strip, a piezoelectric film sensor is arranged in the mounting groove, a first fixing plate is provided at one end of the mounting groove, a through hole is provided in the first fixing plate, the piezoelectric film sensor is connected to a signal line, an end of the signal line facing away from the piezoelectric film sensor passes through the through hole and is connected to a dynamic collector connector, the dynamic collector connector is used to connect to the dynamic collector to dynamically weigh the vehicle, the top of the piezoelectric film sensor is connected to a first colloid, and the opposite side walls of the prefabricated strip are connected to a plurality of reinforcing strips.

[0008] Compared with the prior art, the beneficial effects of the utility model are: by setting the prefabricated strip and opening the installation groove, setting the piezoelectric film sensor in the installation groove and using the first colloid seal, batch production can be carried out before on-site construction, and the prefabricated piezoelectric film weighing device can be directly installed at the designated position on the road surface during on-site construction, saving a lot of man-hours, reducing the duration of road control, and improving construction efficiency; by setting a number of the reinforcing strips, it is beneficial to increase the contact area between the prefabricated strip and the road surface, improve the installation stability and reliability of the prefabricated piezoelectric film weighing device, and increase the service life of the prefabricated piezoelectric film weighing device.

[0009] Furthermore, the length of the prefabricated strip is in the range of 3m to 4m, the width of the prefabricated strip is in the range of 0.5m to 1m, and the height of the prefabricated strip is greater than 0.2m.

[0010] Furthermore, the depth of the mounting groove is 40 mm, the width of the mounting groove is 20 mm, and the length of the mounting groove is greater than the length of the piezoelectric film sensor.

[0011] Furthermore, a rubber ring is arranged in the through hole, and the rubber ring is adapted to the signal line.

[0012] Furthermore, a second colloid is connected to a side of the first fixing plate facing the mounting groove, and the second colloid is used to cover a portion of the signal line located in the mounting groove.

[0013] Furthermore, the tops of the first colloid and the second colloid are flush with the top of the prefabricated strip.

[0014] Furthermore, a second fixing plate is arranged at one end of the installation slot facing away from the first fixing plate, and the heights of the first fixing plate and the second fixing plate are both equal to the depth of the installation slot.

[0015] Furthermore, the bottom surfaces of the plurality of reinforcing strips are coplanar with the bottom surface of the prefabricated strip, and the length of the reinforcing strip is greater than 20 cm. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a prefabricated piezoelectric film weighing device in an embodiment of the utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the prefabricated piezoelectric film weighing device in the embodiment of the utility model;

[0018] Figure 3 It is a partial structural schematic diagram of a prefabricated piezoelectric film weighing device in an embodiment of the utility model;

[0019] Description of main component symbols:

[0020]

[0021]

[0022] The following specific implementation manner will further illustrate the present utility model in conjunction with the above-mentioned drawings. DETAILED DESCRIPTION

[0023] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings. Several embodiments of the present invention are given in the drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0024] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0025] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the technical field of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0026] See also Figures 1 to 3The prefabricated piezoelectric film weighing device in the embodiment of the utility model comprises a prefabricated strip 100, the length of the prefabricated strip 100 is in the range of 3m to 4m, the width of the prefabricated strip 100 is in the range of 0.5m to 1m, the height of the prefabricated strip 100 is greater than 0.2m, a mounting groove 110 is provided at the top of the prefabricated strip 100, the depth of the mounting groove 110 is 40mm, the width of the mounting groove is 20mm, a piezoelectric film sensor 200 is arranged in the mounting groove 110, the length of the mounting groove 110 is greater than the length of the piezoelectric film sensor 200, and the piezoelectric film sensor 200 is connected to a signal Line 210, a first fixing plate 120 is set at one end of the installation groove 110, and the first fixing plate 120 has a through hole 121. A rubber ring 122 is set in the through hole 121, and the rubber ring 122 is adapted to the signal line 210. The end of the signal line 210 facing away from the piezoelectric film sensor 200 passes through the through hole 121. Specifically, the end of the signal line 210 facing away from the piezoelectric film sensor 200 passes through the rubber ring 122 in the through hole 121 and is connected to the dynamic collector connector 220. The dynamic collector connector 220 is used to connect the dynamic collector to dynamically weigh the vehicle. Preferably, the prefabricated strip 100 is made of concrete, and the prefabricated strip 100 is in a rectangular shape. The length, width and height of the prefabricated strip 100 are customized according to the width of the on-site road. Specifically, the length is 3.5m, the width is 0.6m, and the height is 0.3m. It is made by pouring. The length of the mounting groove 110 is consistent with the length of the prefabricated strip 100. The width of the piezoelectric film sensor 200 is smaller than the width of the mounting groove 110. The thickness of the piezoelectric film sensor 200 is smaller than the depth of the mounting groove 110. The first fixing plate 120 is made of concrete. The dynamic collector connector 220 is a BNC connector. Data is collected through the dynamic collector and displayed on a computer. It can be understood that the first fixing plate 120 and the rubber ring 122 can protect the signal line 210, fix its position, and prevent the connection between the signal line 210 and the piezoelectric film sensor 200 from malfunctioning, and the rubber ring 122 can prevent the first fixing plate 120 from being excessively squeezed or the fixing effect from being deteriorated due to thermal expansion and contraction due to climatic reasons. The prefabricated strip 100 is manufactured in advance according to road conditions before construction, which can shorten the construction period and facilitate laying. It is only necessary to place the prefabricated strip 100 and the components installed on the prefabricated strip 100 at the construction location.

[0027] The top of the piezoelectric film sensor 200 is connected to the first colloid 310, and the first fixing plate 120 is connected to the second colloid 320 on one side facing the mounting groove 110. The second colloid 320 is used to cover the portion of the signal line 210 located in the mounting groove 110. The tops of the first colloid 310 and the second colloid 320 are both flush with the top of the prefabricated strip 100. A second fixing plate 130 is provided at one end of the mounting groove 110 facing away from the first fixing plate 120. The heights of the first fixing plate 120 and the second fixing plate 130 are both equal to the depth of the mounting groove 110. Preferably, the first colloid 310 and the second colloid 320 are both made of epoxy potting glue, which fixes, seals and protects the piezoelectric film sensor 200 and the signal line 210. The epoxy potting glue needs to be cured for a certain period of time after potting. The first fixing plate 120 and the second fixing plate 130 are helpful in assisting the potting. It can be understood that the prefabricated piezoelectric film weighing device is potted and cured in advance, which can further shorten the potting and curing period, and the first colloid 310 and the second colloid 320 increase the protection and fixing effect on the piezoelectric film sensor 200 and the signal line 210, thereby increasing the reliability and service life of the prefabricated piezoelectric film weighing device.

[0028] The opposite side walls of the prefabricated strip 100 are connected to a plurality of reinforcing strips 400, the bottom surfaces of the plurality of reinforcing strips 400 are coplanar with the bottom surface of the prefabricated strip 100, and the length of the reinforcing strip 400 is greater than 20 cm. Preferably, the reinforcing strip 400 is made of steel bars. It can be understood that the combination of the reinforcing strip 400 and the prefabricated strip 100 increases the contact area between the prefabricated piezoelectric thin film weighing device and the road surface to be installed, increases the stability of the prefabricated piezoelectric thin film weighing device, and is beneficial to improving the reliability and life of the prefabricated piezoelectric thin film weighing device. The prefabricated piezoelectric thin film weighing device improves the construction and installation efficiency in the installation of the dynamic weighing system, reduces the road control time, shortens the on-site construction period, and is prefabricated in batches, so that the installation effect is uniform and stable.

[0029] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0030] The above-mentioned embodiments only express several implementation methods of the utility model, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that, for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, and these all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A prefabricated piezoelectric film weighing device, It is characterized in that It comprises a prefabricated strip, a mounting groove is provided on the top of the prefabricated strip, a piezoelectric film sensor is arranged in the mounting groove, a first fixing plate is provided at one end of the mounting groove, a through hole is provided on the first fixing plate, the piezoelectric film sensor is connected to a signal line, an end of the signal line facing away from the piezoelectric film sensor passes through the through hole and is connected to a dynamic collector connector, the dynamic collector connector is used to connect to the dynamic collector to dynamically weigh the vehicle, the top of the piezoelectric film sensor is connected to a first colloid, and the opposite side walls of the prefabricated strip are connected to a plurality of reinforcing strips.

2. The prefabricated piezoelectric film weighing device according to claim 1, It is characterized in that The length of the prefabricated strip is in the range of 3m to 4m, the width of the prefabricated strip is in the range of 0.5m to 1m, and the height of the prefabricated strip is greater than 0.2m.

3. The prefabricated piezoelectric film weighing device according to claim 1, It is characterized in that The depth of the mounting groove is 40 mm, the width of the mounting groove is 20 mm, and the length of the mounting groove is greater than the length of the piezoelectric film sensor.

4. The prefabricated piezoelectric film weighing device according to claim 1, It is characterized in that A rubber ring is arranged in the through hole, and the rubber ring is adapted to the signal line.

5. The prefabricated piezoelectric film weighing device according to claim 1, It is characterized in that A second colloid is connected to a side of the first fixing plate facing the mounting groove, and the second colloid is used to cover a portion of the signal line located in the mounting groove.

6. The prefabricated piezoelectric film weighing device according to claim 5, It is characterized in that The tops of the first colloid and the second colloid are flush with the top of the prefabricated strip.

7. The prefabricated piezoelectric film weighing device according to claim 1, It is characterized in that A second fixing plate is arranged at one end of the installation slot facing away from the first fixing plate, and the heights of the first fixing plate and the second fixing plate are both equal to the depth of the installation slot.

8. The prefabricated piezoelectric film weighing device according to claim 1, It is characterized in that The bottom surfaces of the plurality of reinforcing strips are coplanar with the bottom surface of the prefabricated strip, and the length of the reinforcing strip is greater than 20 cm.

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