CN215492021U - Flat plate type high-speed dynamic weighing platform with pretightening force - Google Patents
Flat plate type high-speed dynamic weighing platform with pretightening force Download PDFInfo
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- CN215492021U CN215492021U CN202121231612.3U CN202121231612U CN215492021U CN 215492021 U CN215492021 U CN 215492021U CN 202121231612 U CN202121231612 U CN 202121231612U CN 215492021 U CN215492021 U CN 215492021U
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Abstract
The invention provides a flat-plate type high-speed dynamic weighing platform with pretightening force, which relates to the field of highway non-stop off-site law enforcement overrun detection and comprises the following components: the road pre-tightening force loading device comprises a basic frame structure buried in a road, a weighing sensor capable of realizing pre-tightening force loading, a bearing table board and a pre-tightening force applying device. The invention overturns the traditional flat-plate weighing platform structure, reduces the weight transmission link, can apply the pretightening force to the weighing sensor, ensures that the weighing sensor can respond at the highest speed when external force is applied to the bearing platform, and can realize the weighing precision when the weighing sensor passes through the weighing platform at the high speed.
Description
Technical Field
The invention relates to the technical field of highway non-stop off-site law enforcement overrun detection, in particular to a flat plate type high-speed dynamic weighing platform with pretightening force.
Background
Road freight vehicle over-load transportation is a serious problem that compromises road safety. In recent years, the state vigorously carries out comprehensive treatment on over-limit vehicles, the demand for high-speed non-stop weighing equipment is strong, and at present, a quartz type sensor, a narrow strip sensor and a flat-plate weighing platform are mainly used in the market of high-speed non-stop weighing. The quartz and narrow sensor has the defects that the weighing area is narrow, the weighing is carried out for incomplete wheel load, strict requirements are required on the flatness of a lane, the low-speed weighing precision cannot be guaranteed, and the like. The weighing platform has two types, namely a weighing platform structure using a pin hole shear sensor as a weighing detection element and a weighing platform structure using a common weighing sensor and a limiting device in the market of the flat-plate type weighing platform.
The flat weighing platform using the pin hole shear sensor as a detection element has the advantages that the shear sensor needs to be installed in a small hole of a stressed beam, weight transmission refers to sensing from a bearing platform surface, the stressed beam deforms, the small hole deforms to the shear sensor, a transmission link is added in the middle, and when a high-speed over-balance wheel only stays for 30mS on the weighing platform surface, the response speed influences the precision. The weighing platform of another common flat plate structure adopts 4 or more common sensors to support the bearing platform plate, the sensors and the bearing platform surface are freely supported and cannot apply pretightening force, the vibration generated by the weighing platform at high speed and passing through the weighing platform adopts a limiting device to reduce the vibration of the weighing platform, the problem of high-speed section precision stability caused by the vibration generated by the weighing platform at high speed and passing through the weighing platform cannot be solved, and the small gap between the free supports has slow response to the high-speed weighing. The weighing platforms with the two flat plate structures can not meet the requirement of the weighing precision of a high-speed section.
Therefore, in order to solve the precision problem of the flat plate type weighing platform during high-speed weighing, the flat plate type high-speed dynamic weighing platform structure with the pretightening force is provided.
Disclosure of Invention
The invention relates to a flat-plate type high-speed dynamic weighing platform with pretightening force, which is used for solving the problems of high-speed vibration caused by free support of a sensor due to more weight transmission links existing in the flat-plate type weighing platform in the current market. The problem of the weighing precision of the flat-plate type dynamic automobile scale at a high-speed section is fundamentally solved.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a take flat high-speed dynamic weighing platform of pretightning force which comprises: the device comprises a basic frame structure, a pretightening force weighing sensor, a bearing table board and a pretightening force applying device, wherein the pretightening force weighing sensor is installed at the left end and the right end of the upper surface of the basic frame structure, the pretightening force weighing sensor is composed of a sensor elastomer, a sensor bottom fixing hole and a sensor top pretightening force applying threaded hole, the bearing table board is tightly attached to the upper surface of the pretightening force weighing sensor, the pretightening force applying device is embedded into the left end and the right end of the bearing table board, and the pretightening force applying device is composed of a hole site sensor supporting plate, a pretightening force bolt and a pretightening force device protecting window.
Preferably, the base frame and the bearing table surface of the flat-plate type high-speed dynamic weighing platform are fixed without gaps through a sensor bottom fixing hole with pretightening force and a top pretightening force applying threaded hole.
Preferably, the flat-plate high-speed dynamic weighing platform is provided with a pretightening force applying device, and the pretightening force can be performed on the sensor symmetrically through a bolt of the pretightening force applying device.
Preferably, the pre-tightening force weighing sensor is a strip-shaped sensor, the bottom of the sensor elastic body is provided with a fixing hole, and the contact surface of the upper end of the sensor is a plane. And the upper end contact surface is provided with a threaded hole, so that the pretightening force device can apply pretightening force to the pretightening force device conveniently.
Wherein, the bearing table-board is an integral bearing table-board formed by machining thick steel plates or welding steel plate components.
The invention provides a flat-plate type high-speed dynamic weighing platform with pretightening force, which has the following beneficial effects:
the invention has simple structure, overturns the traditional flat-plate weighing platform structure, is provided with the flat-plate structure with pretightening force, reduces the weight transmission link, can apply the pretightening force to the sensor, and improves the response speed of the flat-plate weighing platform under high-speed weighing.
Drawings
FIG. 1 is a schematic diagram of the load cell preload with preload according to the present invention;
FIG. 2 is a 3D diagram of a flat-plate type high-speed dynamic weighing platform with pre-tightening force according to the present invention;
FIG. 3 is a schematic diagram of a basic frame body of the flat-plate type high-speed dynamic weighing platform with pre-tightening force according to the present invention;
FIG. 4 is a schematic structural view of a load cell with pre-tightening force according to the present invention;
FIG. 5 is a schematic view of the assembly structure of the flat-plate high-speed dynamic weighing platform with pre-tightening force according to the present invention.
Illustration of the drawings:
100-basic frame structure, 200-weighing sensor, 201-sensor elastic body, 202-sensor bottom fixing hole, 203-sensor top pretightening force applying threaded hole, 300-bearing table board, 400-pretightening force applying device, 401-sensor supporting plate, 402-pretightening force bolt and 403-pretightening force device protecting window.
Detailed Description
Referring to fig. 1-5, a flat-plate high-speed dynamic weighing platform with pre-tightening force comprises: the device comprises a basic frame structure 100, a weighing sensor 200 capable of pre-tightening force, a bearing table 300 and a pre-tightening force applying device 400, wherein the weighing sensor 200 capable of pre-tightening force is installed at the left end and the right end of the upper surface of the basic frame structure 100, the weighing sensor 200 capable of pre-tightening force is composed of a sensor elastic body 201, a sensor bottom fixing hole 202 and a sensor top pre-tightening force applying threaded hole 203, the bearing table 300 is tightly attached to the upper surface of the weighing sensor 200 capable of pre-tightening force, the pre-tightening force applying device 400 is embedded into the left end and the right end of the bearing table 300, and the pre-tightening force applying device 400 is composed of a supporting plate 401 with a hole site sensor, a pre-tightening force bolt 402 and a pre-tightening force device protection window 403.
In this embodiment, as shown in fig. 3, in the schematic diagram of the flat plate type high-speed dynamic weighing platform basic frame body with pre-tightening force, the basic frame structure 100 is used as a base body for applying the pre-tightening force of the weighing platform, and is embedded in a lane road of a highway, and is composed of a basic frame 101, a sensor fixing base 102, a drainage structure 103, and anchor bars 104, as shown in the drawing, the basic frame 100 is a cavity with closed periphery and bottom, the sensor fixing base 102 is provided with mounting holes for fixing the pre-tightening force sensor 200 on the basic frame structure 100, and the anchor bars 104 are used for firmly anchoring the basic frame structure in road concrete, and for facilitating drainage, the bottom of the basic frame is provided with a drainage device 103. The accumulated water in the drainage device 103 is drained out of the weighing platform through an external drainage pipe.
In this embodiment, as shown in the load cell with pretightening force diagram of fig. 4, the load cell 200 with pretightening force is composed of a cell elastic body 201, a cell bottom fixing hole 202, and a cell top pretightening force applying threaded hole 203.
In this embodiment, as shown in fig. 5, the load-bearing platform 300 is an integral load-bearing platform formed by machining a thick steel plate or welding steel plate components, and the strength of the load-bearing platform is designed to meet the impact load of a heavy platform of a high-speed vehicle.
In this embodiment, as shown in fig. 5, the pretensioning device 400 is formed by: hole site sensor-equipped support plate 401, pretightening force bolt 402, and pretightening force device protection window 403, as shown in the figure, hole site sensor-equipped support plate 401 and load-bearing platform 300 are welded together.
The foundation frame structure 100 consists of a sensor fixing base, a drainage structure and anchor bars, and is a cavity with the periphery and the bottom closed and buried in a road to play a role in protecting a weighing sensor and a bearing platform; the sensor fixing base is used for fixing the pretightening force sensor on a foundation structure, one end of the sensor fixing base is welded or bolted with the foundation frame, and the other end of the sensor fixing base is provided with a bolt connecting piece for fixing the sensor, so that the sensor with the pretightening force can be conveniently fixed. The anchor bars are used to anchor the foundation structure firmly in the road concrete, and the foundation frame is provided with a drainage device for facilitating drainage.
The weighing sensor 200 with the pretightening force can realize fixation of two ends, one end is fixed on the basic frame structure 101, the other end is fixed on the bearing platform 300, the pretightening force can be applied to the weighing sensor 200 through other pretightening force devices such as bolts and the like, and gaps between the weighing sensor 200 and the bearing platform 300 and between the weighing sensor 200 and the basic frame structure 1 are eliminated.
The sensor elastomer 201 senses a weight signal, converts the weight signal into an electric signal to be output, is convenient for an upper weighing controller to sample, the fixing hole 202 at the bottom of the sensor is used for fixing on a base structure, the weighing sensor 200 can be conveniently fastened on the base frame structure 100 through a bolt, the pretightening force applying threaded hole 203 at the top of the sensor is used for being connected with a pretightening force applying device, and the pretightening force applying device is used for performing pretightening through a screw mechanism such as a bolt and the like on the weighing sensor 200.
The working principle is as follows: when the bearing table-board 300 is placed on the weighing sensor 200, because the bearing table-board 300 deforms slightly in the processing and manufacturing process, a gap A exists between the bearing table-board 300 and the supporting surface of the weighing sensor 200, and if the pretightening force device 400 is not used for pretightening the bearing table-board 300 and the weighing sensor 200, the bearing table-board vibrates to influence the high-speed metering performance when the weighing device is in high-speed over-balance. According to the technical scheme, the pre-tightening applying device 400 is adopted to pre-tighten the bearing table board to eliminate the gap a, stress generated by deformation of the bearing table board 300 is applied to the weighing sensor 200, so that the weighing sensor 200 generates tension, and sensor pre-tightening is realized.
Claims (4)
1. The utility model provides a take flat high-speed dynamic weighing platform of pretightning force which comprises: the device comprises a basic frame structure (100), a pre-tightening force weighing sensor (200), a bearing table board (300) and a pre-tightening force applying device (400), wherein the pre-tightening force weighing sensor (200) is installed at the left end and the right end of the upper surface of the basic frame structure (100), the pre-tightening force weighing sensor (200) is composed of a sensor elastic body (201), a sensor bottom fixing hole (202) and a sensor top pre-tightening force applying threaded hole (203), the bearing table board (300) is tightly attached to the upper surface of the pre-tightening force weighing sensor (200), the pre-tightening force applying device (400) is arranged at the left end and the right end of the bearing table board (300) in an embedded mode, and the pre-tightening force applying device (400) is composed of a supporting plate (401) with a hole position sensor, a pre-tightening force bolt (402) and a pre-tightening force device protecting window (403).
2. The flat-plate high-speed dynamic weighing platform with pre-tightening force according to claim 1, wherein the base frame structure (100) and the bearing platform surface (300) of the flat-plate high-speed dynamic weighing platform are fixed without clearance through the bottom fixing hole and the top pre-tightening force applying threaded hole (203) of the sensor (200) with pre-tightening force.
3. The flat plate type high-speed dynamic weighing platform with pre-tightening force according to claim 1, wherein the flat plate type high-speed dynamic weighing platform is provided with a pre-tightening force applying device (400), and the pre-tightening force can be performed by the symmetrical re-tightening sensor (200) through a bolt of the pre-tightening force applying device (400).
4. The flat plate type high-speed dynamic weighing platform with pre-tightening force according to claim 1, wherein the pre-tightening force weighing sensor (200) is a strip-shaped sensor, a fixing hole is formed at the bottom of an elastomer of the sensor, the contact surface at the upper end of the sensor is a plane, and a threaded hole is formed in the contact surface at the upper end of the sensor, so that the pre-tightening force can be conveniently applied by a pre-tightening force device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121231612.3U CN215492021U (en) | 2021-06-03 | 2021-06-03 | Flat plate type high-speed dynamic weighing platform with pretightening force |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121231612.3U CN215492021U (en) | 2021-06-03 | 2021-06-03 | Flat plate type high-speed dynamic weighing platform with pretightening force |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215492021U true CN215492021U (en) | 2022-01-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121231612.3U Active CN215492021U (en) | 2021-06-03 | 2021-06-03 | Flat plate type high-speed dynamic weighing platform with pretightening force |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215492021U (en) |
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2021
- 2021-06-03 CN CN202121231612.3U patent/CN215492021U/en active Active
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