High-precision real-time monitoring device for gate opening and closing force

Abstract

The utility model discloses a high accuracy real -time monitoring device of gate opening and closing force belongs to hydraulic engineering technical field, including monitoring device main part, and monitoring device main part is composed of inner support, first elastomer, second elastomer and strain sensor, and the both sides top end of inner support, middle end and bottom are provided with the round hole of pin shaft, and the both sides of inner support are equipped with first elastomer and second elastomer, and first elastomer and second elastomer middle part are provided with installation slot, and the inside of installation slot is equipped with strain sensor, through setting up inner support, cooperate with the first elastomer and second elastomer of strain sensor, the two forces of detected can obtain whether the gate is partial load and the degree of partial load through subtraction calculation, and the two forces of detected can obtain the real -time opening and closing force size of gate through addition calculation, and then can effectively prevent the monitoring accuracy loss caused by gate partial load, and on the basis of high accuracy real -time monitoring opening and closing force still can avoid the jamming phenomenon caused by gate deflection.

Description

Technical Field

[0001] This utility model belongs to the field of water conservancy and hydropower engineering technology, specifically relating to a high-precision real-time monitoring device for the opening and closing force of gates. Background Technology

[0002] The Design Specification for Steel Gates in Water Conservancy and Hydropower Projects (SL74-2019) clearly stipulates the design requirements for gate opening and closing forces. Opening and closing forces include opening force and closing force. As the "throat" of water conservancy projects, the gate's opening force directly reflects the stress state of the gate and its opening and closing equipment. Abnormal opening force is a core early warning signal of safety hazards, specifically in preventing equipment overload damage and identifying gate jamming hazards. In terms of preventing equipment overload damage: when the opening force exceeds the design value (such as the rated tension of the hoist or the gate structure's load-bearing limit), it may directly lead to the hoist motor burning out, wire rope breaking, transmission gear breaking, or gate frame deformation and tearing of the water-stop structure. Such malfunctions may cause gates to fail to open and close properly, and in extreme cases, they may threaten the safety of main structures such as dams and dikes, or even cause catastrophic accidents such as dam failure and flooding. With the implementation of online gate monitoring systems, it has become common practice to deploy sensors on gates for online monitoring. The power supply and communication for the sensors on the gate body have also become increasingly sophisticated. For example, the problem of inconvenient power supply and communication on gates has been solved by the arrangement of follow-up cables such as electric drums, drag chains, and cable reels.

[0003] Currently, existing gates often exhibit phenomena such as gate skew and sudden increases in opening force, leading to gate jamming or "stuck" between the gate and the gate slot due to corrosion and deformation. If these issues are not detected in time, forcibly opening the gate can cause localized stress concentration in the gate structure, resulting in gate leaf twisting, gate slot concrete spalling, and even "lockdown" damage to the opening and closing equipment. It also increases the safety risks for personnel entering dangerous areas (such as the gate slot or underwater) during maintenance. Therefore, we propose a high-precision real-time monitoring device for gate opening and closing force. Utility Model Content

[0004] The purpose of this invention is to provide a high-precision real-time monitoring device for the opening and closing force of a gate, so as to solve the existing problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision real-time monitoring device for the opening and closing force of a gate, comprising a monitoring device body, a first elastic body, and a second elastic body. The monitoring device body consists of an inner support, a first elastic body, a second elastic body, and a strain sensor. The inner support has corresponding circular holes at its top and middle ends on both sides, and corresponding elongated holes at its bottom ends on both sides. Pins are installed inside the circular and elongated holes. The first and second elastic bodies are respectively installed at the middle and bottom ends of both sides of the inner support. Circular holes corresponding to the center of the middle circular hole and the center of the bottom elongated hole of the inner support are opened at the top and bottom ends of both the first and second elastic bodies. A double-thinned mounting groove is opened in the middle of the first and second elastic bodies. A strain sensor is installed inside the mounting groove, and the inside of the mounting groove is sealed by injecting sealant.

[0006] Preferably, one end of the pin passes through the first elastic body, both sides of the inner support, and the round hole on the second elastic body in sequence, and extends to the other end of the second elastic body. A retaining ring is provided at the end of the pin that passes through the second elastic body. A stop plate is installed on one side of the retaining ring. Both the surface of the stop plate and the retaining ring are provided with screw holes. The stop plate and the retaining ring are fixedly connected to the pin by bolts passing through the screw holes.

[0007] Preferably, a first gasket and a second gasket are respectively provided between the two sides of the inner support and the first elastic body and the second elastic body. The surfaces of the first gasket and the second gasket are provided with circular holes corresponding to the circular holes on the surfaces of the first elastic body and the second elastic body. The pin passes through the first gasket and the second gasket.

[0008] Preferably, a first protective cover and a second protective cover are respectively provided on the outer side of the middle part of the first elastic body and the second elastic body. Protective cover fixing holes are provided around the first protective cover and the second protective cover and on both sides of the inner bracket. The first protective cover and the second protective cover are respectively covered on the middle part of the outer side of the first elastic body and the second elastic body by mounting screws and protective cover fixing holes and are fixedly connected to the inner bracket.

[0009] Preferably, the bottom of the first elastic body and the second elastic body are connected to a gate. The top center of the gate is connected to the first elastic body and the second elastic body through a gate lifting lug. The pin in the bottom circular hole of the first elastic body and the second elastic body passes through the bottom elongated hole of the inner bracket and the gate lifting lug. The center of the bottom elongated hole of the inner bracket coincides with the center of the pin.

[0010] Preferably, wire holes are provided on both sides of the middle part of the inner bracket, and the wires in the wire holes extend through the first protective cover or the second protective cover to the interior of the mounting groove.

[0011] Preferably, the top of the inner support is provided with a hoisting point, and the top of the inner support is equipped with a hoisting pulley via the hoisting point.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] 1. By setting an internal support and opening round holes on both sides, and using pins to install a first elastic body and a second elastic body with strain sensors, the subtraction of the two detected forces can be used to calculate whether the gate is unbalanced and the degree of unbalance. The addition of the two detected forces can be used to calculate the real-time opening and closing force of the gate, thus effectively preventing the loss of monitoring accuracy caused by gate unbalance. On the basis of high-precision real-time monitoring of opening and closing force, it can also avoid the jamming phenomenon caused by gate skew.

[0014] 2. By designing the protective cover as a square structure, in addition to preventing mechanical damage to the elastomer, it can also restrict the movement of the elastomer, so that the elastomer is fixed within a certain range during transportation and installation.

[0015] 3. Through the design of the main body of the monitoring device, a non-invasive installation method is adopted, which does not require changes to the equipment structure during installation, making it easy to implement on site and enabling underwater applications. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the main structure of the monitoring device of this utility model;

[0018] Figure 3 This is a schematic diagram of the disassembled structure of the monitoring device of this utility model.

[0019] In the diagram: 1. Main body of the monitoring device; 2. Opening and closing motor pulley; 3. Gate; 4. Gate lifting lug; 5. Opening and closing motor lifting point; 6. Inner support; 7. First elastic body; 8. Pin shaft; 9. First protective cover; 10. Protective cover fixing hole; 11. Mounting groove; 12. Strain sensor; 13. First gasket; 14. Second elastic body; 15. Second gasket; 16. Retaining ring; 17. Stop plate; 18. Second protective cover; 19. Cable passage hole. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figure 1-3 This utility model provides a technical solution for a high-precision real-time monitoring device for the opening and closing force of a gate: it includes a monitoring device body 1, a first elastic body 7, and a second elastic body 14. The monitoring device body 1 is composed of an inner support 6, the first elastic body 7, the second elastic body 14, and a strain sensor 12. The inner support 6 has round holes at the top and middle of both sides and oblong holes at the bottom of both sides. Pins 8 are installed inside the round holes and oblong holes. The first elastic body 7 and the second elastic body 14 are respectively installed at the middle and bottom of both sides of the inner support 6. The top and bottom of the first elastic body 7 and the second elastic body 14 have round holes corresponding to the center of the round hole at the middle end and the center of the oblong hole at the bottom end of the inner support 6. The middle of the first elastic body 7 and the second elastic body 14 has a double-thinned mounting groove 11. The strain sensor 12 is installed inside the mounting groove 11. The inside of the mounting groove 11 is sealed by injecting sealant.

[0022] Specifically, one end of the pin 8 passes through the first elastic body 7, the two sides of the inner bracket 6, and the round hole on the second elastic body 14 in sequence, and extends to the other end of the second elastic body 14. A retaining ring 16 is provided at the end of the pin 8 that passes through the second elastic body 14. A stop plate 17 is installed on one side of the retaining ring 16. Both the surface of the stop plate 17 and the retaining ring 16 are provided with screw holes. The stop plate 17 and the retaining ring 16 are fixedly connected to the pin 8 by bolts passing through the screw holes.

[0023] Specifically, a first gasket 13 and a second gasket 15 are respectively provided between the two sides of the inner support 6 and the first elastic body 7 and the second elastic body 14. The surfaces of the first gasket 13 and the second gasket 15 are provided with round holes corresponding to the round holes on the surfaces of the first elastic body 7 and the second elastic body 14. The pin 8 passes through the first gasket 13 and the second gasket 15.

[0024] Specifically, a first protective cover 9 and a second protective cover 18 are respectively provided on the outer side of the middle part of the first elastic body 7 and the second elastic body 14. Protective cover fixing holes 10 are provided around the first protective cover 9 and the second protective cover 18 and on both sides of the inner bracket 6. The first protective cover 9 and the second protective cover 18 are respectively covered on the middle outer part of the first elastic body 7 and the second elastic body 14 by mounting screws and cooperating with the protective cover fixing holes 10, and are fixedly connected to the inner bracket 6.

[0025] Specifically, the bottom of the first elastic body 7 and the second elastic body 14 are connected to the gate 3. The top center of the gate 3 is connected to the first elastic body 7 and the second elastic body 14 through the gate lifting lug 4. The pin 8 in the bottom round hole of the first elastic body 7 and the second elastic body 14 passes through the bottom elongated hole of the inner bracket 6 and the gate lifting lug 4. The center of the bottom elongated hole of the inner bracket 6 coincides with the center of the pin 8.

[0026] Specifically, wire holes 19 are provided on both sides of the middle part of the inner bracket 6. The wires in the wire holes 19 pass through the first protective cover 9 or the second protective cover 18 and extend into the interior of the mounting groove 11.

[0027] Specifically, the top of the inner support 6 is provided with a hoisting point 5, and the top of the inner support 6 is equipped with a hoisting pulley 2 via the hoisting point 5.

[0028] In this embodiment, during assembly, two strain sensors 12 are installed at predetermined positions within the strain-sensitive locations of the double-thinned mounting grooves 11 formed in the middle of the first elastic body 7 and the second elastic body 14. Sealant is injected into the interior of the double-thinned mounting grooves 11 and allowed to solidify. Then, the pin 8 is threaded sequentially through the first elastic body 7, the first gasket 13, the hole in the middle of the inner bracket 6, the second gasket 15, and the second elastic body 14. The wires from the strain sensors 12 within the first and second elastic bodies 7 and 14 are threaded through the wire holes 19 on the inner bracket 6 and passed inside the inner bracket 6. A retaining ring 16 is then placed on the end of the pin 8, and a stopper 17 is installed. Finally, screws are used to secure the pin. Tighten the bolts, and after tightening, flip up the stop plate 17 to interfere with the hexagonal bolt, preventing the bolt from loosening. Finally, install the first protective cover 9 and the second protective cover 18 with bolts to assemble the main body 1 of the monitoring device. The main body 1 of the monitoring device is then assembled with the gate 3 by inserting the pin 8, which is inserted into the round hole at the bottom of the inner bracket 6, into the first elastic body 7, the first gasket 13, the elongated oval hole on one side of the bottom of the inner bracket 6, and through the gate lifting lug 4, the elongated oval hole on the other side of the bottom of the inner bracket 6, the second gasket 15, and the second elastic body 14. The main body 1 of the monitoring device is then assembled with the gate 3 by using the round hole at the top of the inner bracket 6 in conjunction with the pin 8 to form the hoisting point 5 for the hoisting mechanism. This allows the top and bottom of the main body 1 of the monitoring device to be connected to the hoisting mechanism pulley 2 and the gate 3, respectively. The connection is designed so that, during use, due to the relatively "soft" texture of the first elastic body 7 and the second elastic body 14, the lower part of the inner support 6 is designed with an elongated oval hole to prevent damage to the first elastic body 7 and the second elastic body 14 from causing the gate 3 to fall off. When the device is working normally, the force of the gate lifting lug 4 acts on the first elastic body 7 and the second elastic body 14 on both sides of the inner support 6. When the first elastic body 7 and the second elastic body 14 break under abnormal force, the gate 3 will drive the lower pin 8 to continue moving downwards until the pin 8 acts on the elongated oval hole of the inner support 6. At this time, the lower elongated oval hole of the inner support 6 is stressed, thus effectively preventing the gate 3 from falling off and causing an accident. The first elastic body 7 and the second elastic body 14 are respectively arranged on both sides of the inner support 6. By subtracting the two detected forces through the first elastic body 7 and the second elastic body 14, and in conjunction with the strain sensor 12, the gate 3 can be determined whether it is unbalanced and the degree of unbalanced load. By adding the two detected forces, the real-time opening and closing force of the gate 3 can be obtained. This can effectively prevent the loss of monitoring accuracy caused by the unbalanced load of the gate 3. On the basis of high-precision real-time monitoring of the opening and closing force, it can also avoid the jamming phenomenon caused by the gate 3 being tilted. The inner support 6 has two functions. The first function is to provide the first elastic body 7 and the second elastic body 14 with support on one side. The second function is that when the first elastic body 7 and the second elastic body 14 fail or break, the elongated hole under the inner support 6 "catch" the shaft and prevent the gate 3 from falling.In other words, when the first elastic body 7 and the second elastic body 14 are working normally, the elongated hole under the inner bracket 6 does not interact with the shaft, and the shaft "suspends" in the middle of the elongated hole under the inner bracket 6. When the first elastic body 7 or the second elastic body 14 fails or breaks, the shaft moves downward and is finally "caught" by the elongated hole of the inner bracket 6. In addition, the first protective cover 9 and the second protective cover 18 also have two functions: one is protection, and the other is restraint of the first elastic body 7 and the second elastic body 14. After the first elastic body 7 and the second elastic body 14 are installed, the upper part of the first elastic body 7 and the second elastic body 14 has passed through the shaft to the middle of the inner bracket 6. However, the connection between the bottom of the first elastic body 7 and the second elastic body 14 and the gate 3 can only be completed on-site. Therefore, if there is no outer shell to restrain them during production, transportation, and installation, the first elastic body 7 and the second elastic body 14 will rotate along the shaft in the middle of the inner bracket 6, causing damage to cables or other parts.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-precision real-time monitoring device for the opening and closing force of a gate, comprising a monitoring device body (1), a first elastic body (7), and a second elastic body (14), characterized in that: The main body (1) of the monitoring device consists of an inner support (6), a first elastic body (7), a second elastic body (14), and a strain sensor (12). The inner support (6) has round holes at the top and middle of both sides and elongated holes at the bottom of both sides. Pins (8) are installed inside the round holes and elongated holes. The first elastic body (7) and the second elastic body (14) are installed at the middle and bottom of both sides of the inner support (6). The top and bottom of the first elastic body (7) and the second elastic body (14) have round holes corresponding to the center of the round hole at the middle end and the center of the elongated hole at the bottom end of the inner support (6). The middle of the first elastic body (7) and the second elastic body (14) has a double-thinned mounting groove (11). The strain sensor (12) is installed inside the mounting groove (11). The inside of the mounting groove (11) is sealed by injecting sealant.

2. The high-precision real-time monitoring device for gate opening and closing force according to claim 1, characterized in that: One end of the pin (8) passes through the first elastic body (7), the two sides of the inner bracket (6), and the round hole on the second elastic body (14) in sequence and extends to the other end of the second elastic body (14). A retaining ring (16) is provided at one end of the pin (8) that passes through the second elastic body (14). A stop plate (17) is installed on one side of the retaining ring (16). Both the surface of the stop plate (17) and the retaining ring (16) are provided with screw holes. The stop plate (17) and the retaining ring (16) are fixedly connected to the pin (8) by bolts passing through the screw holes.

3. The high-precision real-time monitoring device for gate opening and closing force according to claim 1, characterized in that: The inner support (6) is provided with a first gasket (13) and a second gasket (15) between its two sides and the first elastic body (7) and the second elastic body (14). The surfaces of the first gasket (13) and the second gasket (15) are provided with round holes corresponding to the round holes on the surfaces of the first elastic body (7) and the second elastic body (14). The pin (8) passes through the first gasket (13) and the second gasket (15).

4. The high-precision real-time monitoring device for gate opening and closing force according to claim 1, characterized in that: A first protective cover (9) and a second protective cover (18) are respectively provided on the outer side of the middle part of the first elastic body (7) and the second elastic body (14). Protective cover fixing holes (10) are provided around the first protective cover (9) and the second protective cover (18) and on both sides of the inner bracket (6). The first protective cover (9) and the second protective cover (18) are respectively covered on the middle part of the outer side of the first elastic body (7) and the second elastic body (14) by mounting screws and cooperating with the protective cover fixing holes (10) and are fixedly connected to the inner bracket (6).

5. The high-precision real-time monitoring device for gate opening and closing force according to claim 1, characterized in that: The bottom of the first elastic body (7) and the second elastic body (14) are connected to a gate (3). The top center of the gate (3) is connected to the first elastic body (7) and the second elastic body (14) through a gate lifting lug (4). The pin (8) in the bottom circular hole of the first elastic body (7) and the second elastic body (14) passes through the bottom elongated hole of the inner bracket (6) and the gate lifting lug (4). The center of the bottom elongated hole of the inner bracket (6) coincides with the center of the pin (8).

6. The high-precision real-time monitoring device for gate opening and closing force according to claim 1, characterized in that: The inner bracket (6) has wire holes (19) on both sides of the middle part. The wires in the wire holes (19) pass through the first protective cover (9) or the second protective cover (18) and extend into the interior of the mounting groove (11).

7. The high-precision real-time monitoring device for gate opening and closing force according to claim 1, characterized in that: The top of the inner support (6) is provided with a hoisting point (5), and the top of the inner support (6) is equipped with a hoisting pulley (2) via the hoisting point (5).

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