Ductile cast iron pipeline loadometer scale platform protection device
By installing rectangular frame-type protective pads around the weighbridge platform, the problems of corrosion and decreased accuracy caused by material accumulation are solved, thus enabling reliable weighing and extending the service life of the weighbridge.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SAINT GOBAIN PIPELINES CO LTD
- Filing Date
- 2025-05-21
- Publication Date
- 2026-05-08
AI Technical Summary
Material can easily accumulate in the gaps around the weighbridge platform, leading to internal corrosion and reduced sensor accuracy, which affects weighing accuracy and service life.
A rectangular frame-type protective pad is used to cover the gap between the weighing platform and the ground. Hard rubber protective strips and connectors are used to fix it to the ground to form a closed structure and prevent materials from entering the weighbridge.
It effectively prevents materials from entering the weighbridge, protects the weighbridge from corrosion, improves weighing reliability, and extends service life.
Smart Images

Figure CN224216157U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of weighing platform protection technology, specifically to a ductile iron pipe weighbridge platform protection device. Background Technology
[0002] The production of ductile iron pipes requires a variety of materials. Because pipe casting companies have large production scales, the consumption of various materials is generally substantial. These materials, along with the finished pipes, are primarily transported by heavy-duty trucks. The quantity of goods carried by these trucks entering and leaving the warehouse is measured and settled by weighing on a weighbridge located on the ground. This weighing method is convenient to operate, has a high single-weighing capacity, and is very suitable for the rapid weighing and measurement of large quantities of materials.
[0003] Due to terrain limitations and to facilitate the passage of heavy-duty vehicles, weighbridges are often installed underground. Their platform is flush with the ground. During weighing, the vehicle can be driven onto the platform at low speed. For the purposes of weighing technology, a certain gap must be maintained between the weighbridge platform and the ground structure.
[0004] During daily use, due to bumps and other factors, some ores, powders, and other materials inevitably fall from the truck bed. Even if the amount spilled from a single truck is small, because the weighbridge is located on a busy route, even with daily cleaning, a considerable amount of material will accumulate over time, seeping into the weighbridge through the gaps around the platform. Since the interior cannot be cleaned regularly, this material will accumulate inside the weighbridge, affecting drainage, accelerating the corrosion of the internal steel components, shortening the weighbridge's lifespan, and, if it gets into the sensor locations, affecting the sensor's detection accuracy, causing inaccurate measurements and resulting in economic losses for the company.
[0005] In view of the above-mentioned defects, the creator of this utility model has finally obtained this utility model after a long period of research and practice. Utility Model Content
[0006] To address the aforementioned technical deficiencies, the present invention provides a protective device for a ductile iron pipe weighbridge platform, comprising a protective pad. The protective pad is configured as a rectangular frame-type sheet structure, covering the installation gap between the weighbridge platform and the ground, and is fixedly installed on the ground.
[0007] Preferably, the protective pad includes two first protective strips and two second protective strips. Both the first and second protective strips are configured as long strip-shaped pieces extending in a straight line. The two ends of the first protective strip are respectively disposed at the ends of the two second protective strips, thereby forming a rectangular frame structure.
[0008] Preferably, the first protective strip and the second protective strip have the same width. The first protective strip and the second protective strip are respectively provided with a connecting section, a covering section and an erecting section along the width direction. The covering section is provided between the connecting section and the erecting section and is correspondingly provided above the installation gap. The erecting section is provided above the weighing platform surface. The connecting section is provided with a connecting hole, and the connector is fixedly connected to the ground through the connecting hole.
[0009] Preferably, both the first protective strip and the second protective strip are made of hard rubber.
[0010] Preferably, the first protective strip and the second protective strip have the same thickness, and the two ends of the first protective strip are set as overlapping ends, and the end of the second protective strip is provided with an overlapping groove. The thickness of the overlapping end is half the thickness of the first protective strip, the depth of the overlapping groove is half the thickness of the second protective strip, and the overlapping end is disposed in the overlapping groove.
[0011] Preferably, the connector includes a pre-embedded base and a connecting rod. The pre-embedded base is fixedly installed in the ground and is configured as a cylindrical component. A fixing hole is provided on the axis of the pre-embedded base, and the fixing hole corresponds to the connecting hole. A pressure plate is provided at one end of the connecting rod. The connecting rod passes through the connecting hole and is installed in the fixing hole. The protective gasket is disposed between the pre-embedded base and the pressure plate.
[0012] Preferably, the upper end of the pre-embedded base is provided with a pressure ring, the pressure ring is configured as a circular plate, the pressure plate is configured as a circular plate, and the protective gasket is disposed between the pressure ring and the pressure plate.
[0013] Preferably, the connecting rod is a cylindrical rod, and a snap-fit block is provided at the end of the connecting rod away from the pressure plate. The snap-fit block is disposed on the circumferential surface of the connecting rod. A guide groove and a snap-fit groove are provided on the inner wall of the fixing hole. The guide groove extends radially from the end of the fixing hole away from the pressure ring and communicates with the snap-fit groove. The snap-fit groove is a fan-shaped groove with the axis of the fixing hole as the center. The snap-fit block moves linearly from the guide groove into the snap-fit groove, and the snap-fit block rotates around the axis of the connecting rod in the guide groove by the rotation of the connecting rod.
[0014] Preferably, there are two snap-fit blocks, which are symmetrically arranged on the connecting rod. The corresponding fixing holes are provided with two guide grooves and two snap-fit grooves, and the two guide grooves and two snap-fit grooves are symmetrically arranged with the axis of the fixing hole as the center.
[0015] Preferably, the connecting hole is provided with a clearance groove corresponding to the guide groove.
[0016] Compared with the prior art, the advantages of this utility model are as follows: the utility model has a reasonable structure, the protective gaskets can be installed and replaced quickly, it is highly practical, it can effectively protect the weighbridge from the intrusion of foreign objects, improve the weighing reliability of the weighbridge, and effectively extend its service life. Attached Figure Description
[0017] Figure 1 This is a schematic diagram of the installation structure of the protective device for the ductile iron pipe weighbridge platform.
[0018] Figure 2 This is a view of the connection structure between the first protective strip and the second protective strip;
[0019] Figure 3 This is a view of the connection structure of the connector;
[0020] Figure 4 This is a cross-sectional view of the structure of the snap-fit block within the snap-fit groove;
[0021] Figure 5 This is a top view of the structure of the pre-embedded seat;
[0022] Figure 6 This is a top view of the connecting rod.
[0023] The numbers in the diagram represent:
[0024] 1-Weighing platform surface; 2-Ground; 3-Installation gap; 4-Protective pad; 5-Connector; 41-First protective strip; 42-Second protective strip; 43-Connecting hole; 44-Overlap end; 45-Overlap groove; 46-Allowing groove; 51-Embedded seat; 52-Connecting rod; 53-Fixing hole; 54-Pressure plate; 55-Pressure ring; 56-Snap-fit block; 57-Guide groove; 58-Snap-fit groove; 59-Actuating block. Detailed Implementation
[0025] The above-mentioned and other technical features and advantages of this utility model will be described in more detail below with reference to the accompanying drawings.
[0026] Example 1
[0027] like Figure 1 As shown, Figure 1 This is a schematic diagram of the installation structure of the protective device for the ductile iron pipe weighbridge platform.
[0028] The ductile iron pipe weighbridge platform protection device of this utility model is used on a weighbridge platform. The weighbridge platform includes a platform surface 1, which is flush with the ground 2. An installation gap 3 is provided between the platform surface 1 and the ground 2 to ensure that the platform surface 1 can be moved and weighed normally. The ductile iron pipe weighbridge platform protection device of this utility model includes a protective pad 4. The protective pad 4 is a rectangular frame-type sheet structure and is fixedly installed on the ground 2. The protective pad 4 covers the installation gap 3 to prevent materials from falling into the installation gap 3.
[0029] Specifically, the protective pad 4 includes two first protective strips 41 and two second protective strips 42. The first protective strips 41 and the second protective strips 42 are both long strips extending in a straight line. The two ends of the first protective strips 41 are respectively set at the ends of the two second protective strips 42, thereby forming a rectangular frame structure.
[0030] The first protective strip 41 and the second protective strip 42 have the same width. The first protective strip 41 and the second protective strip 42 are respectively provided with a connecting section, a covering section and an erecting section along the width direction. The covering section is located between the connecting section and the erecting section and is located above the installation gap 3. The erecting section is located above the weighing platform 1. The connecting section is provided with a connecting hole 43. The connector 5 is fixedly connected to the ground 2 through the connecting hole 43, thereby ensuring the coverage and protection of the installation gap 3.
[0031] Generally, the connector 5 can be a conventional pre-embedded expansion bolt, thereby achieving connection with the connecting hole 43 for disassembly and fixing of the protective strip.
[0032] Generally, both the first protective strip 41 and the second protective strip 42 are made of hard rubber. Only a small portion of these hard rubber protective strips rests on the platform, thus not affecting the weighing operation. Furthermore, due to their own weight, they deform slightly in the erected section and come into contact with and adhere to the platform surface 1, providing a good sealing effect. The four protective strips, when installed together, completely cover all the installation gaps 3 around the platform, preventing debris from entering the weighbridge through these gaps. The deformation caused by a vehicle passing over the platform and pressing on the protective strips will naturally return to its original shape after the vehicle leaves due to its elasticity.
[0033] like Figure 2 As shown, Figure 2This is a structural view of the connection between the first protective strip and the second protective strip. Preferably, the first protective strip 41 and the second protective strip 42 have the same thickness, and the two ends of the first protective strip 41 are set as overlapping ends 44, and the end of the second protective strip 42 is provided with an overlapping groove 45. The thickness of the overlapping end 44 is half the thickness of the first protective strip 41, and the depth of the overlapping groove 45 is half the thickness of the second protective strip 42. The overlapping end 44 is disposed in the overlapping groove 45, thereby realizing the overlap between the first protective strip 41 and the second protective strip 42, thus avoiding gaps between the first protective strip 41 and the second protective strip 42, and strengthening the full coverage of the installation gap 3.
[0034] This utility model has a reasonable structure, allows for quick installation and replacement of the protective pads, is highly practical, effectively protects the weighbridge from foreign objects, improves the weighing reliability of the weighbridge, and effectively extends its service life.
[0035] Example 2
[0036] like Figure 3 As shown, Figure 3 This is a view of the connection structure of the connector 5; the connector 5 includes a pre-embedded base 51 and a connecting rod 52. The pre-embedded base 51 is fixedly installed in the ground 2. The pre-embedded base 51 is a cylindrical part, and a fixing hole 53 is provided on the axis of the pre-embedded base 51. The fixing hole 53 is provided corresponding to the connecting hole 43. One end of the connecting rod 52 is provided with a pressure plate 54. The connecting rod 52 passes through the connecting hole 43 and is installed in the fixing hole 53. The protective pad 4 is installed between the pre-embedded base 51 and the pressure plate 54, thereby fixing the protective pad 4 on the ground 2.
[0037] Preferably, the upper end of the pre-embedded base 51 is provided with a pressure ring 55, the pressure ring 55 is configured as a circular plate, the pressure plate 54 is configured as a circular plate, and the protective gasket 4 is disposed between the pressure ring 55 and the pressure plate 54 to increase the contact surface between the protective gasket 4 and the connector 5, thereby improving the stability of the protective gasket 4 on the ground 2.
[0038] like Figure 4 , Figure 5 , Figure 6 As shown, Figure 4 This is a cross-sectional view of the structure of the snap-fit block within the snap-fit groove; Figure 5 This is a top view of the structure of the pre-embedded seat; Figure 6 This is a top view of the connecting rod.
[0039] Specifically, the connecting rod 52 is a cylindrical rod. A locking block 56 is provided at the end of the connecting rod 52 away from the pressure plate 54. The locking block 56 is located on the circumferential surface of the connecting rod 52. Correspondingly, a guide groove 57 and a locking groove 58 are provided on the inner wall of the fixing hole 53. The guide groove 57 extends radially from the end of the fixing hole 53 away from the pressure ring 55 and communicates with the locking groove 58. The locking groove 58 is a fan-shaped groove centered on the axis of the fixing hole 53. During use, the locking block 56 is moved linearly from the guide groove 57 into the locking groove 58. By rotating the connecting rod 52, the locking block 56 rotates around the axis of the connecting rod 52 to enter the locking groove 58, achieving axial fixation and thus locking the connecting member 5.
[0040] Preferably, two locking blocks 56 are provided, and the two locking blocks 56 are symmetrically arranged on the connecting rod 52. The corresponding fixing hole 53 is provided with two guide grooves 57 and two locking grooves 58. The two guide grooves 57 and the two locking grooves 58 are symmetrically arranged with the axis of the fixing hole 53 as the center, thereby improving the connection stability of the connecting rod 52 in the fixing hole 53.
[0041] Generally, the connecting hole 43 is provided with a clearance groove 46 corresponding to the guide groove 57. The clearance groove 46 is used to ensure that when the connecting rod 52 is inserted, the snap-fit block 56 enters the guide groove 57 through the clearance groove 46.
[0042] The pressure plate 54 is provided with a toggle groove or a toggle block 59 on the end face away from the connecting rod 52. The pressure plate 54 can be turned by the toggle groove or the toggle block 59, thereby realizing the rotation of the connecting rod 52.
[0043] Preferably, the distance between the pressure plate 54 and the locking block 56 is slightly less than the sum of the thickness of the protective pad 4 and the extension length of the guide groove 57. This allows the rubber protective pad 4 to deform under pressure when the locking block 56 is locked to the locking groove 58. Under the rebound force of the protective pad 4, the locking block 56 and the locking groove 58 fit tightly together, thereby reducing the shaking of the connecting rod 52 in the fixing hole 53 and preventing the connecting rod 52 from coming off due to shaking.
[0044] The protective pad 4 is fixed to the ground 2 by multiple connectors 5. In order to facilitate replacement, the connector 5 structure of this embodiment is adopted to avoid the bolts becoming impossible to disassemble after the threads of ordinary bolts are deformed by repeated squeezing and impact of heavy objects. In addition, the quick-installation structure of the connector 5 also minimizes the impact of long-term maintenance on logistics and transportation.
[0045] The above description is merely a preferred embodiment of the present utility model and is illustrative rather than restrictive. Those skilled in the art will understand that many changes, modifications, and even equivalents can be made within the spirit and scope defined by the claims of the present utility model, all of which will fall within the protection scope of the present utility model.
Claims
1. A protective device for a ductile iron pipe weighbridge platform, characterized in that, The system includes a protective pad, which is a rectangular frame-shaped sheet structure. The protective pad covers the installation gap between the weighing platform and the ground. The protective pad has connection holes, through which a connector is fixedly connected to the ground. The protective pad is made of hard rubber.
2. The protective device for ductile iron pipe weighbridge platform as described in claim 1, characterized in that, The protective pad includes two first protective strips and two second protective strips. Both the first and second protective strips are long strip-shaped pieces extending in a straight line. The two ends of the first protective strip are respectively set at the ends of the two second protective strips, thereby forming a rectangular frame structure.
3. The protective device for ductile iron pipe weighbridges as described in claim 2, characterized in that, The first protective strip and the second protective strip have the same width. The first protective strip and the second protective strip are respectively provided with a connecting section, a covering section and an erecting section along the width direction. The covering section is located between the connecting section and the erecting section. The covering section is located above the installation gap. The erecting section is located above the weighing platform surface. The connecting hole is located on the connecting section.
4. The protective device for ductile iron pipe weighbridge platform as described in claim 3, characterized in that, The first protective strip and the second protective strip have the same thickness, and the two ends of the first protective strip are set as overlapping ends. The end of the second protective strip is provided with an overlapping groove. The thickness of the overlapping end is half the thickness of the first protective strip, and the depth of the overlapping groove is half the thickness of the second protective strip. The overlapping end is located in the overlapping groove.
5. The protective device for ductile iron pipe weighbridge platform as described in claim 1, characterized in that, The connector includes a pre-embedded base and a connecting rod. The pre-embedded base is fixedly installed in the ground. The pre-embedded base is a cylindrical part, and a fixing hole is provided on the axis of the pre-embedded base. The fixing hole is provided corresponding to the connecting hole. A pressure plate is provided at one end of the connecting rod. The connecting rod passes through the connecting hole and is installed in the fixing hole. The protective gasket is provided between the pre-embedded base and the pressure plate.
6. The protective device for ductile iron pipe weighbridge platform as described in claim 5, characterized in that, The upper end of the pre-embedded base is provided with a pressure ring, which is a circular plate-shaped component. The pressure plate is a circular plate-shaped component, and the protective gasket is disposed between the pressure ring and the pressure plate.
7. The protective device for ductile iron pipe weighbridges as described in claim 6, characterized in that, The connecting rod is configured as a cylindrical rod, and a snap-fit block is provided at the end of the connecting rod away from the pressure plate. The snap-fit block is disposed on the circumferential surface of the connecting rod. A guide groove and a snap-fit groove are provided on the inner wall of the fixing hole. The guide groove extends radially from the end of the fixing hole away from the pressure ring and communicates with the snap-fit groove. The snap-fit groove is configured as a fan-shaped groove with the axis of the fixing hole as the center. The snap-fit block moves in a straight line from the guide groove into the snap-fit groove, and the snap-fit block rotates around the axis of the connecting rod in the guide groove by the rotation of the connecting rod.
8. The protective device for ductile iron pipe weighbridges as described in claim 7, characterized in that, Two locking blocks are provided, and the two locking blocks are symmetrically arranged on the connecting rod. The corresponding fixing holes are provided with two guide grooves and two locking grooves. The two guide grooves and two locking grooves are symmetrically arranged with the axis of the fixing hole as the center.
9. The protective device for ductile iron pipe weighbridge platform as described in claim 7, characterized in that, The connecting hole is provided with a clearance groove corresponding to the guide groove.
10. The protective device for ductile iron pipe weighbridge platform as described in claim 7, characterized in that, The end face of the pressure plate away from the connecting rod is provided with a turning groove or turning block for rotating the pressure plate.