A manual hydraulic flexible photovoltaic support prestressed cable measuring and adjusting device

Abstract

The utility model discloses a manual hydraulic type flexible photovoltaic support prestressed cable measurement adjusting device relates to flexible photovoltaic support technical field, including outer tube, adjusting mechanism, hydraulic transmission mechanism and measuring mechanism. The outer tube has intercommunication first cavity, second cavity, third cavity in it, and the hydraulic oil is circulated through the communicating hole. Adjusting mechanism contains adjusting rod and adjusting piston, and manually adjusts the hydraulic oil volume, and hydraulic transmission mechanism contains hydraulic piston and connecting rod, and the transmission pressure drives the prestressed cable anchor tool, and the measuring mechanism contains the measuring piston, elastic element and scale display component, realizes the cable force visualization. The seal is established to each piston outside and prevents leakage. The device integrates measurement and adjustment function, does not need additional equipment, and the operation is efficient, and the manual drive adapts complex environment, and reduces operation and maintenance cost, and the cable force real -time feedback improves the precision, and the sealing is reliable, and prolongs the life.

Description

Technical Field

[0001] This utility model relates to the field of flexible photovoltaic support technology, and in particular to a manual hydraulic device for measuring and adjusting the tension of prestressed cables. Background Technology

[0002] In the field of photovoltaic power generation technology, flexible photovoltaic (PV) supports are characterized by large spans, high clearance, and high utilization of the underlying space, making them widely used in mountainous areas, fishponds, tidal flats, and sewage treatment plants. The flexible PV support structure uses prestressed steel cables tensioned between two fixed points, utilizing the large deformation of the prestressed steel cables to resist the weight of the PV modules, wind, snow, and maintenance loads.

[0003] The internal forces of flexible photovoltaic (PV) support cables have a significant impact on the safety and stability of the support system. Therefore, strict limits on cable internal forces are necessary during the design phase, and it must be ensured that the internal forces do not change significantly throughout the entire operational phase. During long-term operation, factors such as temperature variations, support deformation, and creep of the side anchors can directly lead to cable slack or tension. Cable slack results in a decrease in internal forces, reducing the rigidity of the support system and increasing deformation under gravity or wind and snow forces, thus affecting structural safety. Cable tension increases internal forces, increasing the tensile force on the side anchors or directly, and in severe cases, can directly cause structural collapse.

[0004] In existing technologies, changes in cable slack or tension are difficult to observe visually and can only be checked manually periodically using specialized equipment. This method requires complex and expensive equipment and cannot provide real-time monitoring to determine whether the cable's internal force meets safety requirements. Therefore, a device that can effectively monitor the internal force of prestressed cables and adjust its magnitude in a timely manner is essential to ensure the safety of flexible photovoltaic supports. Utility Model Content

[0005] To address the shortcomings of existing technologies, such as the separation of measurement and adjustment of prestressed cables in flexible photovoltaic supports, cumbersome operation, and reliance on electrical equipment, this invention provides a manual hydraulic integrated device that enables real-time measurement and convenient adjustment of cable force.

[0006] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0007] A manual hydraulic flexible photovoltaic support prestressed cable measurement and adjustment device includes an outer cylinder, an adjustment mechanism, a hydraulic transmission mechanism, and a measuring mechanism. The outer cylinder has a first cavity, a second cavity, and a third cavity that are interconnected. The adjustment mechanism is located in the first cavity, the hydraulic transmission mechanism is located in the second cavity, and the measuring mechanism is located in the third cavity. The first cavity, the second cavity, and the third cavity are connected by a connecting hole to allow hydraulic oil to flow.

[0008] The adjustment mechanism is used to manually adjust the hydraulic oil volume distribution to change the tension of the prestressed cable;

[0009] The hydraulic transmission mechanism drives the prestressed cable anchor to move by transmitting hydraulic oil pressure.

[0010] The measuring mechanism achieves visual measurement of prestressed cable tension through hydraulic oil pressure.

[0011] Furthermore, the adjustment mechanism includes an adjustment rod and an adjustment piston. The adjustment rod is threadedly connected to the top of the outer cylinder, and the adjustment piston is fixedly connected to the lower end of the adjustment rod and can reciprocate within the first cavity.

[0012] Furthermore, the top of the adjusting rod is provided with a hexagonal operating part, which drives the adjusting piston to change the volume of hydraulic oil in the first chamber by rotating the adjusting rod.

[0013] Furthermore, the hydraulic transmission mechanism includes a hydraulic piston and a connecting rod. The hydraulic piston can reciprocate within the second cavity, and one end of the connecting rod is fixedly connected to the hydraulic piston, while the other end is detachably connected to the prestressed cable anchor.

[0014] Furthermore, the measuring mechanism includes a measuring piston, an elastic element, a measuring rod, and a scale display assembly. The measuring piston can reciprocate within the third cavity. One end of the elastic element is fixed to the upper end of the third cavity, and the other end is connected to the measuring piston. The measuring rod is fixedly connected to the measuring piston and drives the scale display assembly to indicate the prestressed cable tension value.

[0015] Furthermore, the elastic element is a measuring spring, whose elastic modulus matches the ratio of the cross-sectional area of ​​the third cavity to the cross-sectional area of ​​the second cavity.

[0016] Furthermore, the outer cylinder is a cylindrical body, and the first cavity, the second cavity and the third cavity are distributed along the axial direction of the outer cylinder and separated by a partition. The connecting hole is provided at the bottom of the partition.

[0017] Furthermore, the adjusting piston, hydraulic piston, and measuring piston are all provided with seals on their outer sides, forming a sealed fit with the inner wall of the corresponding cavity.

[0018] Furthermore, the scale display component includes a prestressed scale fixed to the outer cylinder and a measuring pointer linked to the measuring rod. The measuring pointer moves with the measuring piston and indicates the tension value on the prestressed scale.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention comprises an outer cylinder, an adjustment mechanism, a hydraulic transmission mechanism, and a measuring mechanism. The outer cylinder contains three interconnected cavities: a first cavity, a second cavity, and a third cavity. The adjustment mechanism changes the cable force by manually adjusting the volume of hydraulic oil. The hydraulic transmission mechanism transmits hydraulic pressure to move the prestressed cable anchor. The measuring mechanism achieves visual measurement of the cable force through hydraulic pressure. Seals are installed on the outer side of each piston to prevent leakage. This invention integrates measurement and adjustment functions, requiring no additional equipment and offering high operational efficiency. Manual operation requires no electricity, adapting to complex environments such as mountains and tidal flats, reducing maintenance costs. Real-time cable force feedback during adjustment improves accuracy. Reliable sealing extends equipment lifespan. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the axial cross-sectional structure of this utility model;

[0023] Figure 3 This is a schematic diagram of the radial cross-sectional structure of this utility model.

[0024] The components numbered in the attached diagram correspond to the following: 1. Outer cylinder, 11. First cavity, 12. Second cavity, 13. Third cavity, 14. Connecting hole, 15. Vent hole, 21. Adjusting rod, 211. Hexagonal operating part, 22. Adjusting piston, 31. Hydraulic piston, 32. Connecting rod, 41. Measuring piston, 42. Elastic element, 43. Measuring rod, 44. Prestressed scale, 45. Measuring pointer, 5. Hydraulic oil, 6. Prestressed cable anchor, 7. Seal. Detailed Implementation

[0025] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0026] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0029] like Figure 1-3 As shown, a manual hydraulic flexible photovoltaic support prestressed cable measuring and adjusting device includes an outer cylinder 1, an adjusting mechanism, a hydraulic transmission mechanism, and a measuring mechanism. The outer cylinder 1 has a first cavity 11, a second cavity 12, and a third cavity 13 that are interconnected. The adjusting mechanism is located in the first cavity 11, the hydraulic transmission mechanism is located in the second cavity 12, and the measuring mechanism is located in the third cavity 13. The first cavity 11, the second cavity 12, and the third cavity 13 are connected by a connecting hole 14 to allow hydraulic oil 5 to flow.

[0030] Adjustment mechanism: used to manually adjust the volume distribution of hydraulic oil 5 to change the tension of prestressed cable, including adjustment rod 21 and adjustment piston 22; adjustment rod 21 is threaded to the top of outer cylinder 1, and adjustment piston 22 is fixedly connected to the lower end of adjustment rod 21, and can reciprocate within the first cavity 11; the top of adjustment rod 21 is provided with a hexagonal operating part 211, which drives adjustment piston 22 to change the volume of hydraulic oil 5 in the first cavity 11 by rotation.

[0031] Hydraulic transmission mechanism: The prestressed cable anchor 6 is driven to move by the pressure transmission of hydraulic oil 5, including hydraulic piston 31 and connecting rod 32; hydraulic piston 31 can reciprocate within the second cavity 12, one end of connecting rod 32 is fixedly connected to hydraulic piston 31, and the other end is detachably connected to prestressed cable anchor 6.

[0032] Measuring mechanism: The prestressed cable tension is visually measured by hydraulic oil pressure 5. It includes a measuring piston 41, an elastic element 42, a measuring rod 43, and a scale display assembly. The measuring piston 41 can reciprocate within the third cavity 13. One end of the elastic element 42 is fixed to the upper end of the third cavity 13, and the other end is connected to the measuring piston 41. The measuring rod 43 is fixedly connected to the measuring piston 41 and drives the scale display assembly to indicate the tension value. The scale display assembly includes a prestressed scale 44 fixed to the outer cylinder 1 and a measuring pointer 45 linked to the measuring rod 43.

[0033] Furthermore, the elastic element 42 is a measuring spring, and its elastic modulus is matched with the ratio of the cross-sectional area of ​​the third cavity 13 to the cross-sectional area of ​​the second cavity 12 to ensure that the cable force and the spring deformation are linearly related.

[0034] Furthermore, the outer cylinder 1 is a cylindrical body. The first cavity 11, the second cavity 12, and the third cavity 13 are distributed along the axial direction of the outer cylinder 1 and separated by a partition. The connecting hole 14 is located at the bottom of the partition to ensure smooth flow of hydraulic oil 5. It also includes a vent hole 15, which is located on the outer cylinder 1 and connects the second cavity 12 to the outside, maintaining the air pressure inside the second cavity 12.

[0035] Furthermore, the outer sides of the adjusting piston 22, the hydraulic piston 31, and the measuring piston 41 are all provided with seals 7, which form a sealing fit with the inner walls of the corresponding cavities 11, 12, and 13 to prevent hydraulic oil 5 from leaking.

[0036] The principle of cable force measurement in this utility model is as follows: the tension of the prestressed cable is transmitted to the hydraulic piston 31 through the anchor 6 and the connecting rod 32, causing the hydraulic oil 5 in the second chamber 12 to generate pressure; the pressure is transmitted to the third chamber 13 through the connecting hole 14, pushing the measuring piston 41 to compress the elastic element 42, and the measuring rod 43 drives the measuring pointer 45 to move on the prestressed scale 44. The cable force value is directly read through the scale (based on Hooke's law and the principle of hydraulic pressure transmission, the cable force and the pointer displacement are linearly related).

[0037] When cable tension needs to be adjusted, the hexagonal operating part 211 of the rotating adjusting rod 21 drives the adjusting piston 22 to move into the first cavity 11. The hydraulic oil 5 flows into the second cavity 12 and the third cavity 13 through the connecting hole 14, pushing the hydraulic piston 31 to pull the anchor 6 and increase the cable tension. At the same time, the measuring mechanism synchronously feeds back the cable tension change.

[0038] Releasing cable tension: Rotate the adjusting rod 21 in the opposite direction, the adjusting piston 22 moves back, the hydraulic oil 5 flows back from the second chamber 12 and the third chamber 13 to the first chamber 11, the hydraulic piston 31 resets, the cable tension decreases, and the pointer updates the cable tension value in real time.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

[0040] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A manually hydraulic flexible photovoltaic support pre-stressed cable measurement adjustment device, characterized in that: The device comprises an outer cylinder, an adjusting mechanism, a hydraulic transmission mechanism and a measuring mechanism; the outer cylinder is internally provided with a first cavity, a second cavity and a third cavity which are in communication with each other; the adjusting mechanism is arranged in the first cavity; the hydraulic transmission mechanism is arranged in the second cavity; the measuring mechanism is arranged in the third cavity; the first cavity, the second cavity and the third cavity realize the flow of hydraulic oil through a communication hole; The adjusting mechanism is used for manually adjusting the volume distribution of hydraulic oil to change the tension of the prestressed cable; The hydraulic transmission mechanism drives the movement of the prestressed cable anchorage device through the pressure of hydraulic oil; The measuring mechanism realizes the visual measurement of the tension of the prestressed cable through the pressure of hydraulic oil.

2. The apparatus of claim 1, wherein: The adjusting mechanism comprises an adjusting rod and an adjusting piston; the adjusting rod is threadedly connected to the top of the outer cylinder; the adjusting piston is fixedly connected to the lower end of the adjusting rod and can reciprocate in the first cavity.

3. The apparatus of claim 2, wherein: The top of the adjusting rod is provided with a hexagonal operating part; the adjusting piston is driven to change the volume of hydraulic oil in the first cavity by rotating the adjusting rod.

4. The apparatus of claim 2, wherein: The hydraulic transmission mechanism comprises a hydraulic piston and a connecting rod; the hydraulic piston can reciprocate in the second cavity; one end of the connecting rod is fixedly connected to the hydraulic piston and the other end is detachably connected to the prestressed cable anchorage device.

5. The apparatus of claim 4, wherein: The measuring mechanism comprises a measuring piston, an elastic element, a measuring rod and a scale display assembly; the measuring piston can reciprocate in the third cavity; one end of the elastic element is fixed to the upper end of the third cavity and the other end is connected to the measuring piston; the measuring rod is fixedly connected to the measuring piston and drives the scale display assembly to indicate the tension value of the prestressed cable.

6. The apparatus of claim 5, wherein: The elastic element is a measuring spring; the elastic modulus of the measuring spring is matched with the ratio of the cross-sectional area of the third cavity to the cross-sectional area of the second cavity.

7. The apparatus of claim 1, wherein: The outer cylinder is a cylindrical body; the first cavity, the second cavity and the third cavity are distributed along the axis of the outer cylinder and are separated by a partition plate; the communication hole is arranged at the bottom of the partition plate.

8. The apparatus of claim 5, wherein: The outer sides of the adjusting piston, the hydraulic piston and the measuring piston are each provided with a sealing element which forms a sealing fit with the inner wall of the corresponding cavity.

9. The apparatus of claim 5, wherein: The scale display assembly comprises a prestressed scale fixed to the outer cylinder and a measuring pointer which is linked to the measuring rod; the measuring pointer indicates the tension value on the prestressed scale as the measuring piston moves.

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