A variable diameter centering vibration reduction bracket for a hydraulic dam sluice pump flow rate monitor

Abstract

The present invention relates to the field of hydraulic equipment brackets or frames, and specifically discloses a variable diameter centering vibration reduction bracket for a hydraulic dam sluice pump flow rate monitor, comprising an adjusting tube, a telescopic tube, a telescopic sleeve and a telescopic frame, wherein the adjusting tube comprises a rotating tube body, a threaded section is arranged on the front end outer wall of the rotating tube body, and a screwing portion is fixed at the rear end of the rotating tube body; the telescopic tube comprises a pipe fitting body, an internal thread is arranged on the inner side of the pipe fitting body, and the threaded section is installed together with the internal thread of the pipe fitting body; the telescopic sleeve comprises a kit body, the kit body is sleeved on the rear end of the rotating tube body, and a telescopic frame is installed between the pipe fitting body and the kit body; and a flow rate monitor is fixedly assembled in the rotating tube body. The bracket of the present invention can adapt to pipes of various calibers through the adjusting tube and the telescopic structure, ensuring that the flow rate monitor is always at the axial center position of the pipe, thereby improving the monitoring accuracy.

Description

Technical Field

[0001] The invention belongs to the field of water conservancy equipment brackets or frames, and in particular relates to a variable diameter centering vibration reduction bracket for a water conservancy dam sluice pump flow rate monitor. Background Art

[0002] The flow rate monitor for water conservancy dam gate pumps is a key device used to monitor the water flow velocity in the dam gate pump pipeline in real time. Accurate flow rate monitoring is crucial to the operational safety and efficiency of water conservancy projects, especially under large flow or complex flow conditions. Real-time acquisition of accurate flow rate data can provide a reliable basis for scheduling decisions. In order to ensure the accuracy of the monitoring data, the flow rate monitor must be installed at the axis of the pipeline to avoid measurement errors caused by the deviation of the equipment from the axis. Therefore, the installation bracket of the flow rate monitor is particularly important. The bracket must not only adapt to the changes in the inner diameter of the pipeline, but also ensure that the equipment is firmly located at the axis of the pipeline.

[0003] In the prior art, there are various ways to install flow rate monitors, but there are some common problems. Traditionally, some devices are directly installed in the pipeline through a simple flange fixing method, or installed using a fixed bracket. These fixing methods often do not take into account the diversity of the inner diameter of the pipeline and the precise alignment of the equipment and the axis of the pipeline, resulting in the equipment not being in the optimal position, thus affecting the accuracy of flow rate monitoring; flange connection requires repeated disassembly and assembly of the pipeline, which is cumbersome to operate. In addition, although some complex bracket structures can adjust the installation position, the operation is cumbersome, the installation and disassembly process is time-consuming and labor-intensive, and the bracket has poor stability and is prone to displacement or falling off in complex water flow environments.

[0004] The number of main branch pipes in the water conservancy dam sluice pumps is large and the diameters are not uniform. There are usually problems with high sediment content and turbidity. In flow rate monitoring, the turbidity and high sediment content of water quality are important factors affecting the accuracy of monitoring, and also limit the application of most flow meters. The main shortcomings of the existing technology in this field include the troublesome flange installation, the lack of universal brackets for pipes of different diameters, and the difficulty in adapting to pipes of different diameters. Ultrasonic sensors are easily affected by turbidity and high sediment content. The existing brackets make it difficult to ensure the precise installation of the axial position of the equipment, and cannot effectively position the flow rate monitor at the axial position of the pipeline, resulting in deviations in the measurement data and affecting the reliability of the monitoring results.

[0005] In order to solve these problems in the prior art, it is very necessary to develop a bracket that can adapt to pipes of different diameters and ensure that the flow rate monitor is accurately installed at the axial center position of the pipe. Summary of the invention

[0006] In view of the defects and problems existing in the prior art, the present invention provides an adjustable bracket to ensure that the flow rate monitor can be installed at the axial position in a pipeline of any diameter, thereby achieving rapid assembly and stable water flow rate monitoring.

[0007] The solution of the present invention to solve the technical problem is: adopt a variable diameter centering vibration reduction bracket for a water conservancy dam gate pump flow rate monitor, including an adjusting tube, a telescopic tube, a telescopic sleeve and a telescopic frame, the adjusting tube includes a rotating tube body, a threaded section is arranged on the front end outer wall of the rotating tube body, and a screwing part is fixed to the rear end of the rotating tube body; the telescopic tube includes a pipe fitting body, an internal thread is arranged on the inner side of the pipe fitting body, and the threaded section is installed together with the internal thread of the pipe fitting body; the telescopic sleeve includes a kit body, the kit body is sleeved on the rear end of the rotating tube body, and a telescopic frame is installed between the pipe fitting body and the kit body; the flow rate monitor is fixedly assembled in the rotating tube body.

[0008] Preferably, a series of rear articulated seats are evenly fixed on the periphery of the rear side of the pipe body, and a series of front articulated seats are evenly fixed on the periphery of the front side of the pipe body; a series of kit articulated seats are evenly fixed on the outer circumference of the kit body, and the kit body is sleeved on the rear end of the rotating tube body; the telescopic frame includes a front connecting rod, a rear connecting rod, a push-pull rod and an outer support rod, and a front axle seat and a rear axle seat are respectively arranged at the front and rear ends of the outer support rod, the inner end of each front connecting rod is hinged to the front articulated seat, and the outer end of each front connecting rod is hinged to the front axle seat; the inner end of each rear connecting rod is hinged to the rear articulated seat, and the outer end of each rear connecting rod is hinged to the rear axle seat; the rear end of each push-pull rod is hinged to the kit articulated seat, and the front end of each push-pull rod is hinged to the rear axle seat.

[0009] Preferably, a rubber strip is fixed on the outer side surface of the outer support rod. The rubber strip is elastic and can be compressed, and after compression, it is tightly attached to the inner wall of the pipe.

[0010] Preferably, a gas bowl is fixed on the outer side surface of the outer support rod, and when the gas bowl is compressed, the internal gas can be discharged and adsorbed on the inner wall of the pipeline.

[0011] Preferably, an adsorption mechanism is arranged on the outer support rod, and the adsorption mechanism includes a slide groove, a sliding rod, a sealing plug, a channel and an end spring. A slide groove is also arranged inside the outer support rod, and the sliding rod is installed in the slide groove. A sealing plug is fixed at the rear end of the sliding rod, and an end spring is connected to the front end of the sliding rod. At the same time, the rear end of the slide groove and the air bowl are connected to each other through a channel; a strip hole is arranged on the inner side wall of the outer support rod, and the front axle seat and the rear axle seat are respectively fixed to the sliding rod, and the front axle seat and the rear axle seat are respectively installed in the strip hole.

[0012] Preferably, the distance between the rear articulated seat and the front articulated seat is equal to the distance between the front axle seat and the rear axle seat, and the front connecting rod and the rear connecting rod are of the same length.

[0013] Preferably, a limiting mechanism is mounted on the rear end of the rotating tube body, and the limiting mechanism includes a rear fixing ring and a front fixing ring. The rear fixing ring is fixed to the rear end of the rotating tube body near the screwing part by a fixing wire, and the front fixing ring is fixed to the outside of the rotating tube body by a fixing wire. There is an annular area between the rear fixing ring and the front fixing ring, and the main body of the kit is located in the annular area.

[0014] Preferably, an anti-reversal mechanism is added between the screwing part and the fixing part, the anti-reversal mechanism includes a nut, a pin and a fixing ring, an external thread is provided at the rear end of the rotating tube body, a nut is mounted on the outside of the rotating tube body through the external thread, a series of penetrating side holes are evenly distributed on the peripheral edge of the screwing part, a pin is mounted in each side hole, and a side spring is mounted in the side hole, the side spring is used to support the pin to move backward.

[0015] Beneficial effects of the present invention: 1. Strong adaptability: The bracket can adapt to pipes of various calibers through the adjustment tube and the telescopic structure, ensuring that the flow rate monitor is always at the axial center position of the pipeline, thereby improving the monitoring accuracy.

[0016] 2. Stable installation: The outer support rod of the telescopic frame with rubber strips can stably support the inner wall of the pipe when unfolded, effectively reducing equipment vibration and ensuring the stability and accuracy of water flow rate measurement.

[0017] 3. Easy to operate: The telescopic length of the telescopic structure can be adjusted by screwing the part, which can conveniently and quickly realize the installation and disassembly of the bracket. The operation is simple and no additional tools are required.

[0018] 4. Efficiency: The bracket design can be quickly deployed in complex environments, saving installation time while ensuring the stability of the equipment and the accuracy of the data. It is suitable for a variety of water conservancy scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the bracket of the present invention;

[0020] Figure 2 It is a schematic diagram of the assembly relationship between the adjusting tube and the telescopic tube;

[0021] Figure 3 It is a schematic diagram of the structure of the regulating tube;

[0022] Figure 4 It is a schematic diagram of the structure of the telescopic sleeve;

[0023] Figure 5 It is a structural schematic diagram of an anti-reversal mechanism;

[0024] Figure 6 It is a schematic diagram of the structure of the telescopic tube;

[0025] Figure 7 It is a schematic diagram of the structural comparison of the outer support rod;

[0026] Figure 8 It is a structural schematic diagram of an auxiliary delivery tool.

[0027] The numbers in the figure are: adjusting tube 1; telescopic tube 2; telescopic sleeve 3; telescopic frame 4; limiting mechanism 5; anti-reversal mechanism 6; flow rate monitor 7; adsorption mechanism 8; auxiliary delivery tool 9; rotating tube body 11; threaded section 12; screwing part 13; pipe body 21; rear hinge seat 22; front hinge seat 23; kit body 31; kit hinge seat 32; fixing part 33; front connecting rod 41; rear connecting rod 42; push-pull rod 43; outer support rod 44; rubber strip 45; gas bowl 451; front Axle seat 46; rear axle seat 47; annular area 51; front fixed ring 52; fixing wire 53; sensor fixing wire 54; nut 61; side hole 62; pin 63; spring seat 64; side spring 65; fixing ring 66; surface groove 67; slide groove 81; slide rod 82; sealing plug 83; channel 84; end spring 85; strip hole 86; inner tube 91; core rod 92; piston 93; radial tooth piece 94; outer tube 95; V-shaped rod 96; spring piece 97; main knob 98; auxiliary knob 99. DETAILED DESCRIPTION

[0028] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0029] Embodiment 1: A variable diameter centering vibration-damping bracket for a flow rate monitor of a water conservancy dam sluice pump. When in use, the bracket is used to carry the flow rate monitor 7 and is installed in a pipe of any diameter of a water conservancy dam sluice pump. It is easy to install and remove, and is used to monitor the water flow velocity in the pipe in real time.

[0030] like Figure 1 As shown, the bracket mainly includes an adjusting tube 1, a telescopic tube 2, a telescopic sleeve 3, a telescopic frame 4 and a limiting mechanism 5, etc., and the flow rate monitor 7 is fixed to the rear end inner wall of the adjusting tube 1. When in use, the screwing part 13 is rotated to rotate relative to the fixing part 33, so that the bracket can be fixed to the inner wall of the pipeline, and the flow rate monitor 7 is always kept at the axial center position of the pipeline. The overall structure of the bracket is simple and easy to operate.

[0031] like Figure 2 and Figure 3 As shown, the adjusting tube 1 comprises a rotating tube body 11, a threaded section 12 and a screwing portion 13. The threaded section 12 is arranged on the front end outer wall of the rotating tube body 11, and the screwing portion 13 is fixed on the rear end of the rotating tube body 11.

[0032] like Figure 6As shown, the telescopic tube 2 includes a pipe body 21, a rear hinge seat 22 and a front hinge seat 23. An internal thread is provided on the inner side of the pipe body 21. During assembly, the threaded section 12 is installed together with the internal thread of the pipe body 21. A series of rear hinge seats 22 are evenly fixed around the rear side of the pipe body 21, and a series of front hinge seats 23 are evenly fixed around the front side of the pipe body 21.

[0033] like Figure 2 and Figure 4 As shown, the telescopic sleeve 3 includes a sleeve body 31 and a sleeve hinge seat 32. A series of sleeve hinge seats 32 are evenly fixed on the outer circumference of the sleeve body 31, and a fixing portion 33 is arranged on the outer rear part of the sleeve body 31. When performing a manual screwing operation, one hand holds the fixing portion 33 and the other hand holds the screwing portion 13 to perform the screwing operation.

[0034] like Figure 1 As shown, the telescopic frame 4 includes a front connecting rod 41, a rear connecting rod 42, a push-pull rod 43, an outer support rod 44, a rubber strip 45, a front axle seat 46 and a rear axle seat 47. The front axle seat 46 and the rear axle seat 47 are respectively located at the front end and the rear end of the outer support rod 44. The distance between the rear articulated seat 22 and the front articulated seat 23 is equal to the distance between the front axle seat 46 and the rear axle seat 47. The front connecting rod 41 and the rear connecting rod 42 are of equal length. The inner end of each front connecting rod 41 is hinged to the front articulated seat 23, and the outer end of each front connecting rod 41 is hinged to the front axle seat 46; the inner end of each rear connecting rod 42 is hinged to the rear articulated seat 22, and the outer end of each rear connecting rod 42 is hinged to the rear axle seat 47. The rear end of each push-pull rod 43 is hinged to the kit articulated seat 32, and the front end of each push-pull rod 43 is hinged to the rear axle seat 47. It can be seen that the pins in the rear articulated seat 22, the front articulated seat 23, the front axle seat 46 and the rear axle seat 47 constitute the four vertices of a parallelogram. Preferably, a rubber strip 45 is fixed to the outer side surface of the outer support rod 44.

[0035] like Figure 7 As shown in (a), a rubber strip 45 is fixed on the outer side of the outer support rod 44. The rubber strip 45 is elastic and can be appropriately compressed to fit tightly against the inner wall of the pipe; or Figure 7 As shown in (b), a gas bowl 451 is fixed on the outer side of the outer support rod 44. When the gas bowl 451 is compressed, the internal gas can be discharged, so that it is firmly adsorbed on the inner wall of the pipeline. Alternatively, an adsorption mechanism 8 is provided on the outer support rod 44, for example Figure 7 As shown in (b), the adsorption mechanism 8 includes a slide groove 81, a slide rod 82, a sealing plug 83, a channel 84 and an end spring 85. The slide rod 82 is mounted in the slide groove 81, the sealing plug 83 is fixed at the rear end of the slide rod 82, and the end spring 85 is connected to the front end of the slide rod 82.

[0036] At the same time, the rear end of the slide groove 81 and the gas bowl 451 are connected to each other through a channel 84. A strip hole 86 is provided on the inner side wall of the outer support rod 44, and the front axle seat 46 and the rear axle seat 47 are respectively fixed on the slide rod 82, and the front axle seat 46 and the rear axle seat 47 are respectively fitted into the strip hole 86. Figure 7 As shown in (b), two upper and lower strip holes 86 are provided on the inner side wall of the outer support rod 44, and the front axle seat 46 and the rear axle seat 47 provided on the upper and lower sides of the slide rod 82 are respectively inserted into the corresponding strip holes 86.

[0037] Thus, under the action of water pressure, the entire bracket pushes the front axle seat 46 and the rear axle seat 47 forward, thereby causing the slide rod 82 to slide forward. After the slide rod 82 slides forward, the movement of the sealing plug 83 can be utilized to draw the water (or air) in the air bowl 451 into the slide groove 81, so that the air bowl 451 is under negative pressure, which can improve the fixing strength of each outer support rod 44 and the inner wall.

[0038] During assembly, the kit body 31 is mounted on the outside of the rotating tube body 11, and then the front fixing ring 52 is mounted on the outside of the rotating tube body 11 and pressed against the front end of the kit body 31. The front fixing ring 52 is fixed by a fixing wire 53. Figure 2 and Figure 3 As shown in the figure, there is an annular area 51 between the screwing part 13 and the front fixing ring 52 after fixing, and the kit body 31 is located in the annular area 51, and the kit body 31 and the annular area 51 can rotate relative to each other. The sensor fixing wire 54 is a countersunk screw, which is located at the bottom of the annular groove of the annular area 51 and is used to fix the flow rate monitor 7. The flow rate monitor 7 is preferably an electromagnetic flow meter. When the water quality changes or contains suspended solids, the electromagnetic flow meter can also ensure accurate flow measurement, which is suitable for flow rate monitoring of water conservancy dam sluice pumps.

[0039] The pipe body 21 is threadedly mounted on the threaded section 12, and the mounting relationship of the telescopic frame 4 is installed, and the rods of the telescopic frame 4 are sequentially mounted on the rear hinge seat 22, the front hinge seat 23 and the sleeve hinge seat 32. The flow rate monitor 7 is fixedly mounted in the inner cavity of the rotating pipe body 11. After installation, when the screwing part 13 is turned by hand, the threaded section 12 can be moved forward or backward into the pipe body 21.

[0040] like Figure 1As shown, when the rotating tube body 11 moves forward relative to the pipe body 21, the distance between the set articulated seat 32 and the rear articulated seat 22 is reduced, so that the front connecting rod 41 and the rear connecting rod 42 are simultaneously expanded outward, thereby driving multiple outer support rods 44 to carry rubber strips 45 to expand outward and support the inner wall of the pipe. Since the outer support rods 44 are always parallel to the axis of the pipe body 21, the outer support rods 44 and the rubber strips 45 can be supported parallel to the inner wall of the pipe after being expanded, thereby ensuring that the axis of the flow rate monitor 7 coincides with the axis of the pipe. When the rotating tube body 11 retreats relative to the pipe body 21, the distance between the set articulated seat 32 and the rear articulated seat 22 increases, so that the front connecting rod 41 and the rear connecting rod 42 are simultaneously contracted inward, thereby driving multiple outer support rods 44 to carry rubber strips 45 to contract inward and break away from the supporting relationship with the pipe. The outer support rods 44 and the rubber strips 45 in the contracted state are parallel and close to the outer wall of the pipe body 21. The bracket can install the flow rate monitor 7 at the axial position of a pipe of any diameter. Since the water flow is stable at the axial position, the water flow rate in the pipe can be accurately monitored.

[0041] In order to ensure that the screwing portion 13 does not rotate in the reverse direction after the stent is deployed, an anti-reversal mechanism 6 may be provided between the screwing portion 13 and the fixing portion 33. Figure 2 , Figure 3 and Figure 5 As shown, an external thread is provided at the rear end of the rotating tube body 11, and a nut 61 is mounted on the outer side of the external thread. A series of through-holes 62 are evenly distributed around the peripheral edge of the screwing portion 13, and a pin 63 is mounted in each of the side holes 62. At the same time, a spring seat 64 is provided at the front end of the side hole 62, and a side spring 65 is mounted in the spring seat 64. The side spring 65 is used to support the pin 63 to move backward. Figure 4 In the embodiment, a fixing ring 66 is integrally fixed to the rear side of the fixing portion 33, and a surface groove 67 is provided on the rear section of the fixing ring 66. When the pressing nut 61 approaches the screwing portion 13, each pin 63 can be pressed to move forward, and then each pin 63 is pressed out of the side hole 62 and inserted into the groove of the surface groove 67, so that the screwing portion 13 and the fixing portion 33 can be locked together.

[0042] When installing the above bracket, the flow rate monitor 7 needs to be installed inside the rotating pipe body 11, and the flow rate monitor 7 is located at the rear side (facing the water), and the telescopic bracket 4 is located at the front side. Usually, the bracket is installed on the inner wall of the pipe inlet, but it can also be installed on the inner wall of the pipe outlet. When installed at the pipe outlet, the bracket can be directly pushed from the outlet to the middle of the pipe through the reverse auxiliary delivery tool 9 to avoid the problem of reduced accuracy caused by outlet water pressure fluctuations. Figure 8As shown, the auxiliary delivery tool 9 includes an inner tube 91, a core rod 92 and an outer tube 95. The core rod 92 is mounted inside the inner tube 91, and a piston 93 is mounted in the front end inner cavity of the inner tube 91, and the core rod 92 is connected to the piston 93. Radial holes are evenly arranged on the front circumferential side wall of the inner tube 91, and radial tooth pieces 94 are respectively sealed and mounted. When the piston 93 moves forward, the air pressure in the closed space at the front end of the inner tube 91 can be increased, thereby driving each radial tooth piece 94 to extend outward, and when the piston 93 moves backward, it can drive each radial tooth piece 94 to retract inward. V-shaped grooves are symmetrically arranged on the outer circumference of the outer tube 95, and a V-shaped rod 96 is installed in each V-shaped groove, so that the V-shaped rod 96 can swing in the V-shaped groove. For example, a steel ring is sleeved on the outer side of the middle concave area of ​​each V-shaped rod 96, so that each V-shaped rod 96 is positioned in the concave area of ​​the V-shaped groove. A spring sheet 97 is installed at the outer end (rear end) between the V-shaped rod 96 and the corresponding V-shaped groove, so that the outer end of the V-shaped rod 96 naturally expands outward and the inner end naturally contracts inward. A main knob 98 is fixed at the rear end of the inner tube 91, and an auxiliary knob 99 is threadedly connected to the inner wall of the rear end hole of the inner tube 91. The rear end of the core rod 92 is rotatably connected to the auxiliary knob 99. When the above auxiliary tool is used, the left hand holds the outer tube 95, inserts the front end of the inner tube 91 into the front end of the rotating tube body 11 (the inner wall of the front end of the rotating tube body 11 can be provided with a groove), and inserts the outer tube 95 into the front end of the pipe body 21 (the inner wall of the front end of the pipe body 21 can be provided with a groove), and uses the tool to deliver the entire bracket from the pipe outlet to the middle section of the pipe. After delivery, when the left hand presses the rear end of each V-shaped rod 96, the front end of each V-shaped rod 96 expands outward, and after expansion, it can be clamped on the inner wall of the front end of the pipe body 21. Then, the auxiliary knob 99 is turned to move the piston 93 forward and drive the radial teeth 94 to expand radially outward and clamp on the inner wall of the front end of the rotating tube body 11. Finally, the main knob 98 is turned to rotate the rotating tube body 11 relative to the pipe body 21, and the telescopic frame 4 is unfolded and supported on the inner wall of the pipe.

[0043] When the above-mentioned flow rate monitor bracket is used, first, fix the rear fixing ring to the rear end of the adjusting tube near the screwing part. Next, put the main body of the telescopic sleeve on the outside of the adjusting tube, and put the front fixing ring on the outside of the adjusting tube so that it presses against the front end of the main body of the kit. Fix the rear fixing ring and the front fixing ring respectively by fixing wires to ensure that the main body of the kit and the adjusting tube can rotate relative to each other. Then, install the telescopic tube thread on the threaded section of the adjusting tube to complete the preliminary assembly of the bracket. This process can ensure that the basic structure of the bracket is formed and prepare for the subsequent installation in the pipeline.

[0044] Install the telescopic frame: Install the various rods of the telescopic frame on the rear hinge seat, front hinge seat and kit hinge seat of the pipe body, including the front connecting rod, rear connecting rod, push-pull rod, outer support rod, etc. Make sure that the hinge points of each rod are accurately connected to ensure the flexibility of the telescopic frame. This step ensures that the telescopic frame can be adjusted according to the inner diameter of the pipe and lays the foundation for the stable support of the bracket.

[0045] Then, fix the flow rate monitor in the inner cavity of the regulating tube to ensure that the device is tight and not easy to loosen. Ensure that the flow rate monitor is firmly installed to lay the foundation for subsequent accurate measurement.

[0046] Adjust the bracket position: Place the entire bracket into the pipe, and by screwing the screwing part of the adjusting tube, the threaded section of the adjusting tube moves forward or backward in the pipe body. When the adjusting tube moves forward, the distance between the hinge seat of the kit and the rear hinge seat is reduced, pushing the front connecting rod and the rear connecting rod to expand outward, driving the outer support rod carrying the rubber strip to expand outward and support on the inner wall of the pipe. This step ensures that the bracket can adapt to the diameter of the pipe and accurately positions the flow rate monitor at the axial position of the pipe to ensure the accuracy of the monitoring data. When the anti-reversal mechanism is added, the screwing part is close to the screwing part to press each pin forward, and then each pin is pressed out of the side hole and inserted into the groove of the face groove, locking the screwing part and the fixing part together.

[0047] Disassembly and movement: When it is necessary to move or disassemble, reversely twist the screw part to shrink the outer support rod and rubber strip of the bracket inward and break away from the supporting relationship with the pipeline. Then, easily remove the bracket and flow rate monitor from the pipeline. This step ensures that the bracket can be easily disassembled and reused in different pipelines, while avoiding damage to the equipment.

[0048] The above specific embodiments of the present invention are only used to illustrate or explain the principles of the present invention, and do not constitute a limitation of the present invention. Therefore, any modifications, equivalent substitutions, improvements, etc. made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. In the description of this application, it should be noted that, unless otherwise specified and limited, the terms "install", "connect", and "connect" should be understood in a broad sense, which can be a mechanical connection or an electrical connection, or the internal connection of two components, or a direct connection, and "up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

Claims

1. A variable diameter centering vibration reduction bracket for a water conservancy dam sluice pump flow rate monitor, characterized in that: The invention comprises an adjusting tube (1), a telescopic tube (2), a telescopic sleeve (3) and a telescopic frame (4), wherein the adjusting tube (1) comprises a rotating tube body (11), a threaded section (12) is arranged on the outer wall of the front end of the rotating tube body (11), and a screwing portion (13) is fixed to the rear end of the rotating tube body (11); the telescopic tube (2) comprises a pipe body (21), an internal thread is arranged on the inner side of the pipe body (21), and the pipe body (21) is mounted on the threaded section (12) via the internal thread; the telescopic sleeve (3) comprises a sleeve body (31), the sleeve body (31) is sleeved on the rear end of the rotating tube body (11), and the telescopic frame (4) is installed between the pipe body (21) and the sleeve body (31); a flow rate monitor (7) is fixedly mounted in the rotating tube body (11), and fixedly mounted on the rear side periphery of the pipe body (21) A series of rear hinged seats (22) are fixed, and a series of front hinged seats (23) are evenly distributed and fixed on the front side periphery of the pipe body (21); a series of set hinged seats (32) are evenly distributed and fixed on the outer circumference of the set body (31), and the set body (31) is sleeved on the rear end of the rotating tube body (11); the telescopic frame (4) comprises a front connecting rod (41), a rear connecting rod (42), a push-pull rod (43) and an outer support rod (44), and a front axle seat (46) and a rear axle seat (47) are respectively arranged at the front and rear ends of the outer support rod (44), the inner end of each front connecting rod (41) is hinged to the front hinged seat (23), and the outer end of each front connecting rod (41) is hinged to the front axle seat (46); the inner end of each rear connecting rod (42) is hinged to the rear hinged seat (22), and the outer end of each rear connecting rod (42) is hinged to the rear axle seat (47);The rear end of each push-pull rod (43) is hinged to the set hinge seat (32), and the front end of each push-pull rod (43) is hinged to the rear axle seat (47). The distance between the rear hinge seat (22) and the front hinge seat (23) is equal to the distance between the front axle seat (46) and the rear axle seat (47). The lengths of the front connecting rod (41) and the rear connecting rod (42) are equal. When the screwing part (13) is rotated by hand, the threaded section (12) can be moved forward or backward into the pipe body (21). When the rotating pipe body (11) moves forward relative to the pipe body (21), The distance between the set hinge seat (32) and the rear hinge seat (22) is reduced, so that the front connecting rod (41) and the rear connecting rod (42) are simultaneously expanded outwards. The outer side surface of the outer support rod (44) is fixed with a gas bowl (451). The outer support rod (44) is provided with an adsorption mechanism (8). The adsorption mechanism (8) includes a slide groove (81), a slide rod (82), a sealing plug (83), a channel (84) and an end spring (85). A slide groove (81) is further provided inside the outer support rod (44). The slide rod (82) is sleeved in the slide groove (81). A sealing plug (83) is fixed to the rear end of the rod (82), and an end spring (85) is connected to the front end of the slide rod (82). The end spring (85) is used to push the slide rod (82) to reset. At the same time, a channel (84) is provided between the rear end of the slide groove (81) and the gas bowl (451), and the rear end of the slide groove (81) and the gas bowl (451) are connected to each other through the channel (84); a strip hole (86) is provided on the inner side wall of the outer support rod (44), and the front axle seat (46) and the rear axle seat (47) are respectively fixed on the slide rod (82), and the front axle seat (46) and the rear axle seat (47) are respectively fixed on the slide rod (82), and the front axle seat (46) and the rear axle seat (47) are respectively fixed on the slide rod (82). The seats (47) are respectively mounted in the strip holes (86). Under the action of water pressure, the entire bracket pushes the front axle seat (46) and the rear axle seat (47) forward, thereby causing the slide bar (82) to slide forward. When the slide bar (82) slides forward, the movement of the sealing plug (83) can be used to draw water or air in the gas bowl (451) into the slide groove (81), so that the gas bowl (451) is negatively pressurized. When the gas bowl (451) is compressed, the internal gas can be discharged and adsorbed on the inner wall of the pipe, thereby improving the fixing strength between each outer support rod (44) and the inner wall of the pipe.

2. The variable diameter centering vibration reduction bracket of the water conservancy dam sluice pump flow rate monitor according to claim 1 is characterized in that: The rear end of the rotating tube body (11) is sleeved with a limiting mechanism (5), the limiting mechanism (5) comprising a front fixing ring (52), the front fixing ring (52) being fixed to the outside of the rotating tube body (11) by a fixing wire (53), an annular area (51) being provided between the screwing portion (13) and the front fixing ring (52), and the sleeve body (31) being sleeved on the annular area (51).

3. The variable diameter centering vibration reduction bracket of the water conservancy dam sluice pump flow rate monitor according to claim 1 is characterized in that: The invention also includes an anti-reversal mechanism (6) provided between the screwing portion (13) and the fixing portion (33), the anti-reversal mechanism (6) including a nut (61), a pin (63) and a fixing ring (66), an external thread is provided at the rear end of the rotating tube body (11), the nut (61) is sleeved on the outer side of the rotating tube body (11) through the external thread, a series of through-holes (62) are evenly distributed on the peripheral edge of the screwing portion (13), a pin (63) is sleeved in each side hole (62), and a fixing ring (66) is sleeved in the side hole (62) The side spring (65) is used to support the pin (63) so that it moves backward. A fixing ring (66) is integrally fixed on the rear side of the fixing portion (33). A surface groove (67) is provided on the rear section of the fixing ring (66). When the pressing nut (61) approaches the screwing portion (13), each pin (63) can be pressed to move forward, and then each pin (63) is pressed out of the side hole (62) and inserted into the groove of the surface groove (67), so that the screwing portion (13) and the fixing portion (33) can be locked to prevent reversal.

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