CN113756265B

CN113756265B - Measurement and control gate equipment

Info

Publication number: CN113756265B
Application number: CN202111149396.2A
Authority: CN
Inventors: 张文正; 姜明梁; 刘杰云; 秦京涛; 李迎; 蔡九茂
Original assignee: Suzhou University; Farmland Irrigation Research Institute of CAAS
Current assignee: Farmland Irrigation Research Institute of CAAS
Priority date: 2021-09-29
Filing date: 2021-09-29
Publication date: 2022-08-30
Anticipated expiration: 2041-09-29
Also published as: CN113756265A

Abstract

The application discloses observing and controlling gate equipment belongs to sluice technical field, the fruit pick-up device comprises a frame body, gate and spacing subassembly, the gate rotates with the framework to be connected, spacing subassembly includes the turning block, a plurality of stoppers and a plurality of first elastic component, stopper and framework sliding connection, be provided with the arch on the turning block, when the turning block rotates, arch on the turning block can promote the stopper orientation and keep away from the direction removal of turning block, the stopper deviates from the one end of turning block and can remove to the rotation route of gate this moment, thereby prescribe a limit to the position of gate. The gate in the measurement and control gate equipment is rotatably connected with the frame body, the gate is fixed by using the limiting blocks in the limiting assemblies, when the opening degree of the gate opening is changed, the gate only needs to be rotated, the friction between the gate and the frame body caused by the vertical sliding of the gate is avoided, and meanwhile, when the angle of the gate is adjusted, the impact force of water flow can be used for driving the gate to rotate, so that the control is more convenient.

Description

Measurement and control gate equipment

Technical Field

The invention relates to the technical field of water gates, in particular to measurement and control gate equipment.

Background

The gate is a control facility for closing and opening a drainage (discharging) water channel, and is an important component of a hydraulic building, and can be used for intercepting water flow, controlling water level, regulating flow, discharging silt and floating objects and the like.

The existing gate basically adopts a mode of moving up and down to open or close a gate opening, when the gate is opened and closed, the friction between the gate and a frame is large, and under the impact of water pressure, the opening and the closing of the gate need large force and are seriously abraded.

Disclosure of Invention

The invention discloses a measurement and control gate device, which aims to solve the problems.

The technical scheme adopted by the invention for solving the technical problems is as follows:

based on the above object, the present invention discloses a measurement and control gate device, comprising:

the frame body is provided with a guide groove, a mounting groove and a plurality of limiting grooves, the guide groove is arc-shaped, the mounting groove and the guide groove are coaxially arranged, one end of the limiting groove is communicated with the mounting groove, the other end of the limiting groove is communicated with the guide groove, the limiting groove is arranged along the radial direction of the guide groove, and the plurality of limiting grooves are arranged at intervals along the circumferential direction of the guide groove;

the gate is rotatably connected with the frame body, and a clamping block matched with the guide groove is arranged on the gate; and

spacing subassembly, spacing subassembly includes turning block, a plurality of stopper and a plurality of first elastic component, and is a plurality of stopper and many the spacing groove one-to-one sets up, the stopper with framework sliding connection, it is a plurality of first elastic component and a plurality of the stopper one-to-one sets up, first elastic component makes the stopper has the orientation the trend that the mounting groove removed, the turning block is located in the mounting groove, the turning block with the framework rotates to be connected, be provided with the arch on the periphery wall of turning block, work as when the turning block rotates along first direction, with the arch corresponds the stopper gets into in the guide way, get into in the guide way the stopper with the fixture block cooperation, it is right the rotation of gate forms the restriction.

Optionally: the gate is provided with a rotating shaft, a through hole is formed in the rotating block, the rotating shaft is located in the through hole, the diameter of the rotating shaft is smaller than that of the through hole, and the rotating shaft and the rotating block are coaxially arranged;

the inner wall of the rotating block is provided with a first control block, the outer wall of the rotating shaft is provided with a second control block matched with the first control block, and the second control block is positioned on the rotating path of the first control block.

Optionally: the two protrusions are arranged symmetrically along the center of the axis of the rotating block; the two first control blocks are arranged symmetrically along the center line of the rotating block; the number of the second control blocks is two, and the two second control blocks are arranged along the center of the axis of the rotating shaft in a central symmetry mode.

Optionally: the rotating shaft is provided with a first control block, a second control block and a through hole, the first control block is provided with a first control hole, the second control block is provided with a second control hole, the through hole is arranged in the first control block, the first control block is provided with a first elastic piece, the second control block is provided with a second elastic piece, the second elastic piece is arranged in the through hole, the second elastic piece is arranged between the first control block and the second control block, and the second elastic piece is arranged in front of the second control block, so that the rotating shaft has a tendency of rotating towards a second direction opposite to the first direction.

Optionally: the protrusion extends along the circumferential direction of the rotating block, and the length of the protrusion is larger than or equal to the minimum distance between two adjacent limiting blocks.

Optionally: the front end face of the protrusion is an inclined plane, and the rear end face of the protrusion is arranged along the radial direction of the rotating block.

Optionally: the diameter difference between the outer diameter of the rotating block and the guide groove is larger than or equal to the length of the protrusion.

Optionally: the thickness of the protrusion is equal to the width of the guide groove.

Optionally: the central angle corresponding to the guide groove is 180 degrees.

Optionally: still include a plurality of doppler velocity of flow meters, it is a plurality of doppler velocity of flow meter all installs in the framework, and it is a plurality of doppler velocity of flow meter follows the width direction interval of framework sets up.

Compared with the prior art, the invention has the following beneficial effects:

the gate in the measurement and control gate equipment is rotatably connected with the frame body, the gate is fixed by using the limiting blocks in the limiting assemblies, when the opening degree of the gate opening is changed, the gate only needs to be rotated, the friction between the gate and the frame body caused by the vertical sliding of the gate is avoided, meanwhile, when the angle of the gate is adjusted, the impact force of water flow can be used for driving the gate to rotate, and the control is more convenient and labor-saving.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained from the drawings without inventive effort.

FIG. 1 shows a schematic diagram of a measurement and control gate device disclosed by an embodiment of the invention;

FIG. 2 shows a schematic view of a frame disclosed in an embodiment of the present invention;

FIG. 3 illustrates a side cross-sectional view of a frame disclosed in an embodiment of the present invention;

FIG. 4 is a schematic illustration of a gate disclosed in an embodiment of the present invention;

FIG. 5 shows a test cross-sectional view of a measurement and control gate device disclosed by an embodiment of the invention;

FIG. 6 is a schematic view showing the connection between the rotary block and the rotary shaft according to the embodiment of the present invention;

FIG. 7 is a schematic view of a turning block disclosed in an embodiment of the present invention;

fig. 8 shows a schematic view of a rotating shaft disclosed in an embodiment of the present invention.

In the figure:

110-a frame body; 111-a bottom wall; 112-a side wall; 113-a guide slot; 114-a limiting groove; 115-a mounting groove; 120-gate; 121-a fixture block; 122-a rotating shaft; 1221-a second control block; 130-doppler velocimetry; 140-a stop assembly; 141-a turning block; 1411-bumps; 1412-a first control block; 1413-through holes; 142-a stopper; 150-a second elastic member.

Detailed Description

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, as generally described and illustrated in the figures herein, could be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, as disclosed in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present application, it should be noted that the indication of orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship which is usually placed when the product of the application is used, or the orientation or positional relationship which is usually understood by those skilled in the art, or the orientation or positional relationship which is usually placed when the product of the application is used, and is only for the convenience of describing the application and simplifying the description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the application. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example (b):

referring to fig. 1 to 8, an embodiment of the invention discloses a measurement and control gate device, which includes a frame 110, a gate 120, and a limiting assembly 140. The gate 120 is rotatably connected to the frame 110, the limiting assembly 140 includes a rotating block 141, a plurality of limiting blocks 142 and a plurality of first elastic members (not shown in the figure), the limiting blocks 142 are slidably connected to the frame 110, the first elastic members are connected between the limiting blocks 142 and the frame 110, the plurality of first elastic members and the plurality of limiting blocks 142 are disposed in a one-to-one correspondence, and the first elastic members make the limiting blocks 142 have a tendency of moving toward the rotating block 141. The rotating block 141 is provided with a protrusion 1411, when the rotating block 141 rotates, the protrusion 1411 on the rotating block 141 pushes the limiting block 142 to move towards a direction away from the rotating block 141, and at this time, one end of the limiting block 142 away from the rotating block 141 moves to a rotating path of the gate 120, so that the position of the gate 120 is limited.

The gate 120 and the framework 110 in the measurement and control gate device disclosed in this embodiment are connected for rotating, the limiting block 142 in the limiting component 140 is utilized to fix the gate 120, when the opening degree of the gate opening is changed, only the gate 120 needs to be rotated, the gate 120 is prevented from sliding up and down to generate friction with the framework 110, and meanwhile, when the angle of the gate 120 is adjusted, the impact force of water flow can be utilized to drive the gate 120 to rotate, so that the control is more convenient and labor-saving.

The frame body 110 includes a bottom wall 111 and two side walls 112, the two side walls 112 are disposed opposite to each other, a gate for water to pass through is defined by the two side walls 112 and the bottom wall 111, and a guide groove 113, a mounting groove 115 and a plurality of limiting grooves 114 are disposed on the side wall 112 of the frame body 110. The guide groove 113 is arc-shaped, the cross section of the installation groove 115 is circular, the installation groove 115 and the guide groove 113 are coaxially arranged, and the diameter of the installation groove 115 is smaller than that of the guide groove 113. One end of the limiting groove 114 is communicated with the mounting groove 115, the other end of the limiting groove 114 is communicated with the guide groove 113, the limiting groove 114 is arranged along the radial direction of the guide groove 113, and the plurality of limiting grooves 114 are arranged along the circumferential direction of the guide groove 113 at intervals.

In this embodiment, the guide groove 113 is set to have a corresponding central angle of 180 degrees, so that only one end of the gate 120 can be limited, the volume of the frame 110 can be reduced, and the manufacturing cost can be saved. Meanwhile, both ends of the guide groove 113 are open, that is, both ends of the guide groove 113 extend to the same end surface of the frame 110, so that it is ensured that the rotation angle of the gate 120 along the guide groove 113 is greater than 180 degrees. Naturally, setting the corresponding central angle of the guide groove 113 to 180 degrees is only one embodiment of this embodiment, and in other embodiments, when the guide groove 113 is set to other angles, it is only necessary to ensure that the gate 120 is fixed at an angle perpendicular to the frame 110 (the gate 120 completely closes the gate opening on the frame 110) when the stopper 142 located in the lowermost stopper groove 114 extends into the guide groove 113.

The gate 120 is rotatably connected to the frame 110, two ends of the gate 120 are respectively provided with a fixture block 121 for being matched with the guide groove 113, the fixture block 121 is clamped in the guide groove 113, and when the gate 120 rotates, the fixture block 121 can slide along the guide groove 113.

The stopper assembly 140 includes a rotation block 141, a plurality of stopper blocks 142, and a plurality of first elastic members. The limiting blocks 142 are arranged in one-to-one correspondence with the limiting grooves 114, the limiting blocks 142 are slidably connected with the frame body 110, the limiting blocks 142 can slide along the limiting grooves 114, and the length of the limiting blocks 142 is greater than that of the limiting grooves 114, so that the limiting blocks 142 at least ensure that one end of each limiting block 142 is positioned in the guide groove 113 or the mounting groove 115 at any time. The first elastic members and the limiting blocks 142 are arranged in a one-to-one correspondence manner, the first elastic members enable the limiting blocks 142 to have a tendency of moving towards the installation groove 115, and under the action of the first elastic members, one ends of the limiting blocks 142 towards the rotating blocks 141 are all abutted against the limiting blocks 142, and at the moment, the limiting blocks 142 completely leave the range of the guide groove 113, so that the gate 120 can smoothly rotate. The rotating block 141 is located in the mounting groove 115, the rotating block 141 is coaxially disposed with the mounting groove 115, and the rotating block 141 is rotatably connected with the frame 110. The outer peripheral wall of the rotating block 141 is provided with a protrusion 1411, and the protrusion 1411 is used for being matched with the limiting block 142. When the rotating block 141 rotates along the first direction, the protrusion 1411 jacks up the limiting block 142, so that one end of the limiting block 142, which is away from the rotating block 141, enters the guide groove 113, and the limiting block 142 entering the guide groove 113 is matched with the clamping block 121 to limit the rotation of the gate 120, thereby positioning the gate 120.

Referring to fig. 5, in the present embodiment, a clockwise direction in the drawing is taken as a first direction, and a counterclockwise direction in the drawing is taken as a second direction.

In order to ensure that the limiting block 142 does not affect the rotation of the clamping block 121 on the gate 120 after entering the mounting groove 115, the difference between the outer diameter of the rotating block 141 and the diameter of the guide groove 113 may be greater than or equal to the length of the protrusion 1411, so that after the end of the limiting block 142 facing the rotating block 141 abuts against the rotating block 141, the end of the limiting block 142 facing away from the rotating block 141 inevitably leaves the range of the guide groove 113 completely. Further, the thickness of the protrusion 1411 is equal to the width of the guide groove 113, and when the limiting block 142 is pushed into the guide groove 113 by the protrusion 1411, the limiting block 142 can completely close the guide groove 113, so that the fixture block 121 and the limiting block 142 can have higher contact strength.

In this embodiment, the gate 120 is set high, and generally the height of the gate 120 is higher than the highest water level of the dam.

The principle of the measurement and control gate equipment disclosed in this embodiment for positioning the gate 120 is as follows: referring to fig. 2, the water flow has a tendency to flow from the right side of gate 120 toward the left side of gate 120, and the pressure of the water received in the lower portion of gate 120 is generally greater than the pressure received in the upper portion of gate 120, so gate 120 generally has a tendency to rotate in a first direction. Initially, the stopper 142 located at the lowest position is ejected out of the guide groove 113 under the action of the protrusion 1411, the stopper 142 located at the lowest position can be just matched with the stopper 121 on the gate 120, the stopper 121 abuts against the stopper 142, so that the gate 120 cannot rotate, and the gate 120 is in a vertical state, so as to close the gate opening. After the rotating block 141 rotates a certain angle along the first direction, the limiting block 142 behind the protrusion 1411 returns to the mounting groove 115 under the action of the first elastic member, the limiting block 142 corresponding to the protrusion 1411 is ejected to the guide groove 113 by the protrusion 1411, after the limiting block 142 behind the protrusion 1411 returns to the mounting groove 115, the gate 120 rotates along the first direction under the action of the pressure of the water flow until the gate abuts against the limiting block 142 extending into the guide groove 113, at this time, the angle of the gate 120 is determined according to the rotating angle of the rotating block 141, and at this time, the gate 120 cannot rotate along the second direction under the impact force of the water flow, so that the position of the gate 120 is ensured to be fixed.

In some embodiments of the present embodiment, the shutter 120 is provided with a rotation shaft 122 at each of two sides thereof, and the rotation shaft 122 is rotatably connected to the frame 110. The rotating block 141 is provided with a through hole 1413, the rotating shaft 122 is located in the through hole 1413, the diameter of the rotating shaft 122 is smaller than that of the through hole 1413, and the rotating shaft 122 and the rotating block 141 are coaxially arranged. The inner wall of the rotating block 141 is provided with a first control block 1412, the outer wall of the rotating shaft 122 is provided with a second control block 1221 for cooperating with the first control block 1412, and the second control block 1221 is located on the rotating path of the first control block 1412.

When the water level at the upstream of the gate 120 is high, the gate 120 can rotate by using the impact force of the water flow, and when the water level at the upstream of the gate 120 is low, the gate 120 can not be opened when the gate is opened to discharge water, and the first control block 1412 and the second control block 1221 are arranged to solve the problem. Normally, during installation, the first control block 1412 and the second control block 1221 are spaced at a certain angle, so that when the rotating block 141 rotates, the first control block 1412 and the second control block 1221 do not contact immediately, and it needs to be ensured that when the first control block 1412 and the second control block 1221 contact, the fixture block 121 of the shutter 120 is located below the limiting block 142 extending into the guide groove 113, so as to avoid self-locking.

The following operating modes can be realized in this way: when the water level at the upstream of the gate 120 is high, the gate 120 is driven to rotate by the impact force of the water flow after the rotating block 141 rotates by a certain angle. When the water level at the upstream of the gate 120 is low, the rotating block 141 may be rotated first, and after the first control block 1412 contacts the second control block 1221, the rotating block 141 is rotated continuously, and the gate 120 is driven by the rotating block 141 to rotate to a specified angle, so as to control the flow rate of the water discharged when the gate is opened.

Based on this, the measurement and control gate device disclosed in this embodiment adopts the way that gate 120 rotates 180 to realize the opening and closing of the gate. Specifically, when the rotation angle of the rotation block 141 is smaller than 90 degrees, the shutter 120 is correspondingly rotated by a certain angle, and when the shutter 120 is rotated by 90 degrees, the opening is opened to the maximum. When the gate needs to be closed, the rotating block 141 is enabled to continue to rotate, and when the rotation angle of the gate 120 exceeds 90 degrees, the gate gradually decreases until the gate 120 is closed again after rotating 180 degrees.

The central angle that this embodiment corresponds guide way 113 sets up to 180 degrees, and is closing on guide way 113 highest position and lowest position department and all being provided with the spacing groove 114 that is used for holding stopper 142, and when gate 120 was vertical state, be located the stopper 142 of the below and being located the top all stretch into guide way 113, can restrict the top and the bottom of gate 120 simultaneously this moment to avoid gate 120 reversal when meetting extreme weather.

Since the gate 120 in this embodiment completes the process of turning the gate opening to a small degree and then turning the gate opening to a small degree after turning 180 degrees, and one protrusion 1411, one first control block 1412 and one second control block 1221 need to turn 360 degrees to complete one cycle, the protrusions 1411, the first control block 1412 and the second control block 1221 can be set to two, the two protrusions 1411 are symmetrically arranged along the center line of the turning block 141, and the two first control blocks 1412 are symmetrically arranged along the center line of the turning block 141, and the two second control blocks 1221 are symmetrically arranged along the center line of the turning shaft 122. Thus, the protrusion 1411 is engaged with the shutter 120, and the rotation period is 180 degrees, which is more convenient in controlling the shutter 120.

Wherein, the front end surface of the protrusion 1411 is provided as an inclined surface, and the rear end surface of the protrusion 1411 is provided along the radial direction of the rotating block 141. Therefore, when the rotating block 141 rotates, the protrusion 1411 can jack up the limiting block 142 in front of the protrusion, and the limiting block 142 behind the protrusion can quickly return to the mounting groove 115, so as to avoid affecting the rotation of the gate 120. When the protrusion 1411 is provided, the protrusion 1411 extends along the circumferential direction of the rotating block 141, and the length of the protrusion 1411 may be equal to the minimum distance between two adjacent limiting blocks 142. Therefore, in the rotating process of the rotating block 141, when the limiting block 142 behind the protrusion 1411 retreats into the mounting groove 115, at least one limiting block 142 in front of the clamping block 121 of the gate 120 completely seals the guide groove 113, so as to ensure the reliability of limiting the clamping block 121 by the limiting block 142. Of course, it is only one embodiment of this embodiment to set the length of the protrusion 1411 equal to the minimum distance between two adjacent limiting blocks 142, and in other embodiments, the protrusion 1411 may be set longer.

Further, the measurement and control gate device disclosed in this embodiment further includes a second elastic member 150, and the second elastic member 150 may be a spring in a compressed state. The second elastic member 150 is located in the through hole 1413, the elastic member is installed between the first control block 1412 and the second control block 1221, and the second elastic member 150 is located in front of the second control block 1221, so that the rotation shaft 122 has a tendency to rotate toward a second direction opposite to the first direction. When the water level at the upstream of the gate 120 is high, the rotation of the gate 120 mainly depends on the pushing of the water flow, and the plurality of stoppers 142 are arranged at intervals, so the rotation of the gate 120 is not linear, and thus when the gate 120 rotates from the position of one stopper 142 to the position of the next rotating block 141, the fixture block 121 on the gate 120 inevitably collides with the corresponding stopper 142, the collision force can be effectively weakened after the second elastic member 150 is arranged, and when the fixture block 121 on the gate 120 is closer to the stopper 142, the pushing force of the second elastic member 150 to the gate 120 is stronger, so that the collision between the fixture block 121 and the stopper 142 is effectively weakened. In some cases, when the water flow cannot push the gate 120 to rotate due to the elastic force of the second elastic member 150, the gate 120 may be driven to rotate by the rotation of the rotating block 141, and the rotation angle of the gate 120 may be linearly controlled. Generally, when the water level at the upstream of the gate 120 is high, the linear control is not required, and the position of the stopper 142 is fixed, so that the corresponding flow rate can be easily calculated by limiting the gate 120 to the position of the stopper 142; when the water level at the upstream of the gate 120 is lower, the opening size of the gate 120 is controlled linearly, so that the flow can be measured and controlled more conveniently.

In some embodiments of this embodiment, a plurality of doppler flow velocity meters 130 may be further installed on the frame body 110, the doppler flow velocity meters 130 are all located at the downstream of the gate 120, the doppler flow velocity meters 130 may be spaced along the width direction of the bottom wall 111 of the frame body 110, and the doppler flow velocity meters 130 may be spaced along the height direction of the side wall 112, so as to obtain more accurate fluid flow velocity data, thereby facilitating to obtain more accurate flow data.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. The utility model provides a measurement and control gate equipment which characterized in that includes:

the limiting device comprises a frame body, wherein a guide groove, a mounting groove and a plurality of limiting grooves are formed in the frame body, the guide groove is arc-shaped, the mounting groove and the guide groove are coaxially arranged, one end of the limiting groove is communicated with the mounting groove, the other end of the limiting groove is communicated with the guide groove, the limiting grooves are arranged along the radial direction of the guide groove, and the plurality of limiting grooves are arranged at intervals along the circumferential direction of the guide groove;

2. The measurement and control gate device according to claim 1, wherein the gate is provided with a rotating shaft, the rotating block is provided with a through hole, the rotating shaft is located in the through hole, the diameter of the rotating shaft is smaller than that of the through hole, and the rotating shaft and the rotating block are coaxially arranged;

3. The measurement and control gate device according to claim 2, wherein the number of the protrusions is two, and the two protrusions are arranged symmetrically along the axis of the rotating block; the number of the first control blocks is two, and the two first control blocks are arranged along the axial lead of the rotating block in a central symmetry manner; the number of the second control blocks is two, and the two second control blocks are arranged along the center of the axis of the rotating shaft in a central symmetry mode.

4. The measurement and control gate apparatus of claim 3, further comprising a second resilient member located within the through hole, the resilient member being mounted between the first control block and the second control block, and the second resilient member being located in front of the second control block such that the rotating shaft has a tendency to rotate in a second direction opposite the first direction.

5. The measurement and control gate device according to claim 1, wherein the protrusion extends along the circumferential direction of the rotating block, and the length of the protrusion is greater than or equal to the minimum distance between two adjacent limiting blocks.

6. The measurement and control gate device according to claim 5, wherein the front end face of the protrusion is provided with an inclined surface, and the rear end face of the protrusion is provided along the radial direction of the rotating block.

7. The measurement and control gate apparatus of claim 1, wherein a difference between an outer diameter of the turning block and a diameter of the guide groove is greater than or equal to a length of the protrusion.

8. The measurement and control gate apparatus of claim 7, wherein the thickness of the protrusion is equal to the width of the guide slot.

9. The measurement and control gate device according to claim 1, wherein the guide slot has a corresponding central angle of 180 degrees.

10. The measurement and control gate device according to claim 1, further comprising a plurality of doppler flow velocity meters, wherein the plurality of doppler flow velocity meters are installed in the frame body, and the plurality of doppler flow velocity meters are arranged at intervals along the width direction of the frame body.