Lifting mechanism for acoustic Doppler flow velocity measuring device
The lifting mechanism, designed with bidirectional wound steel wire and fixed pulleys, solves the problems of uniform descent and rusting/jamming of the slide rail in the acoustic Doppler velocity measurement device, and realizes stable and uniform motion and flexible use of the measurement mechanism.
Patent Information
- Application Number
- CN202520729142.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-17
- Publication Date
- 2026-01-16
- Estimated Expiration
- 2035-04-17
AI Technical Summary
Existing acoustic Doppler flow velocity measurement devices have difficulty achieving uniform descent in their measuring mechanisms, and rust on the metal slide rails can easily lead to jamming problems.
The device employs a bidirectional winding wire lifting mechanism, where the first wire pulls upward and the second wire pulls downward. Combined with a fixed pulley design, this ensures that the measuring mechanism rises and falls at a uniform speed and can still descend even when the slide rail is rusted.
This achieves uniform descent of the measuring mechanism, preventing jamming, improving the reliability and flexibility of the device, and reducing costs.
Smart Images
Figure CN223806899U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water body flow velocity measuring device technical field especially relates to a kind of for acoustic Doppler flow velocity measuring device lifting mechanism. BACKGROUND
[0002] Acoustic Doppler current profiler is a kind of instrument specially designed for measuring flow velocity in water body. It uses acoustic Doppler effect, that is, when there is relative motion between sound source and observer, the observed sound wave frequency will change. This effect can be used to accurately measure the speed of water flow. Among them, measuring instrument includes a lifting drive mechanism, and the measuring instrument is lifted by lifting drive mechanism.
[0003] However, the existing measuring instrument generally realizes lifting through chain, steel wire or screw rod etc. transmission component. Among them, in the scheme of lifting measuring instrument by steel wire, one or more steel wires are wound on the reel, and the winding directions of the multiple steel wires are the same. When the reel is positively rotated, the steel wire is wound on the reel and pulls the measuring instrument to rise;When the reel reverses, the reel releases the steel wire and makes the measuring instrument descend under its own gravity. The defect of such arrangement is that as the depth of the measuring mechanism changes below the water surface, the buoyancy it receives also increases, so that the descending speed of the measuring mechanism gradually decreases due to the change of buoyancy before it is completely immersed below the water surface, and uniform speed cannot be achieved. At the same time, since the measuring mechanism needs to be guided by the metal slide rail on the lifting support, and the metal slide rail is immersed in water for many years, if the metal slide rail rusts, it is easy to cause the measuring mechanism to jam and be difficult to naturally descend under its own gravity. SUMMARY
[0004] In view of the above shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a lifting mechanism for acoustic Doppler flow velocity measuring device, which solves the problem that the measuring mechanism in the prior art cannot achieve uniform speed.
[0005] The utility model solves the technical problems by adopting the technical scheme of a kind of lifting mechanism for acoustic Doppler flow velocity measuring device, the Doppler flow velocity measuring device includes measuring mechanism, the lifting mechanism is arranged above the measuring mechanism, to drive the measuring mechanism moves along height direction, the lifting mechanism includes:
[0006] Driving part has an output shaft, reel is arranged on the output shaft;The reel includes first winding section and second winding section, first steel wire is wound in the first winding section, second steel wire is connected to the second winding section, the first steel wire and the second steel wire are connected to the measuring mechanism;
[0007] The first steel wire is connected to the top end of the measuring mechanism to apply upward tension to the measuring mechanism, and the second steel wire is connected to the bottom end of the measuring mechanism to apply downward tension to the measuring mechanism.
[0008] Further, a fixed pulley is arranged at the bottom end of the measuring mechanism, and the second steel wire is wound around the fixed pulley.
[0009] Further, the first steel wire has a first winding section wound around the first winding section of the first winding section, and a first drooping section drooping under the gravity of the first steel wire; and the second steel wire has a second winding section wound around the second winding section of the second winding section, and a second drooping section drooping under the gravity of the second steel wire.
[0010] The first drooping section and the second drooping section are respectively arranged at opposite sides of the winding drum.
[0011] Further, the winding drum is provided with a first partition plate and a third partition plate at two ends thereof, and a second partition plate is arranged between the first partition plate and the third partition plate.
[0012] The region of the winding drum between the first partition plate and the second partition plate constitutes the first winding section, and the region of the winding drum between the second partition plate and the third partition plate constitutes the second winding section.
[0013] Further, the first partition plate, the second partition plate and the third partition plate are all provided with fixing holes for connecting the first steel wire or the second steel wire.
[0014] Further, the peripheral wall of the winding drum is inwardly recessed to form a constraint groove, and the first steel wire and the second steel wire can at least partially extend into the constraint groove.
[0015] Further, the constraint groove is arranged in a spiral shape.
[0016] Further, the winding drum has a central mounting hole, and a limiting protrusion is arranged on the inner wall of the central mounting hole.
[0017] The peripheral wall of the output shaft is inwardly recessed to form a limiting notch, and the limiting protrusion can extend into the limiting notch.
[0018] Further, the limiting protrusion and the limiting notch are arranged in a strip shape, and the limiting protrusion extends through the two ends of the winding drum.
[0019] Further, sprockets are arranged at two ends of the output shaft, and a chain is engaged with the sprockets, and the chain is connected with the measuring mechanism.
[0020] Compared with the prior art, the utility model has at least the following beneficial effects:
[0021] (1) first steel wire is wound in first winding section, second steel wire is wound in second winding section, and the winding direction of first steel wire and second steel wire is opposite.When the drive piece is positive, first winding section winds first steel wire, second winding section releases second steel wire, and through first steel wire, the measuring mechanism is pulled up at uniform speed; when the drive piece is reversed, second winding section winds second steel wire, first winding section releases first steel wire, and through second steel wire, the measuring mechanism is pulled down at uniform speed. Therefore, the measuring mechanism can be pulled down at uniform speed.
[0022] (2) second steel wire can pull down the measuring mechanism, even if the metal slide rail on the lifting support rusts and jams, second steel wire can provide downward force and pull down the measuring mechanism, preventing the measuring mechanism from stopping in water under its own gravity.
[0023] (3) the steel wire lifting and chain lifting two kinds of lifting modes are integrated in a lifting mechanism, so that users can select different lifting modes according to different use scenes. At the same time, two kinds of lifting modes are driven by the output shaft of a drive piece, which has higher integration, lower cost and more compact structure. BRIEF DESCRIPTION OF DRAWINGS
[0024] Fig. 1 It is a structure schematic view of the lifting mechanism in the embodiment;
[0025] Fig. 2 It is a structure schematic view of the output shaft in the embodiment;
[0026] Fig. 3 It is a structure schematic view of the winding drum in the embodiment;
[0027] In the figure:
[0028] 100, drive piece;110, output shaft;111, limit gap;200, winding drum;210, first winding section;220, second winding section;230, first partition;240, second partition;250, third partition;260, constraint groove;270, center mounting hole;280, limit protrusion;290, fixing hole;300, chain wheel. DETAILED DESCRIPTION
[0029] The following is a specific embodiment of the utility model and further describes the technical scheme of the utility model in combination with the drawings, but the utility model is not limited to these embodiments.
[0030] Please refer to Figs. 1-3The utility model discloses a kind of lifting mechanism for acoustic Doppler flow velocity measuring device, the Doppler flow velocity measuring device includes measuring mechanism, the lifting mechanism is arranged above the measuring mechanism, to drive the measuring mechanism moves along height direction, the lifting mechanism includes:
[0031] Driving piece 100 has an output shaft 110, winding drum 200 is provided on the output shaft 110;The winding drum 200 includes first wire winding section 210 and second wire winding section 220, the first steel wire is wound in the first wire winding section 210, the second steel wire is connected in the second wire winding section 220, the first steel wire and the second steel wire are connected to the measuring mechanism;
[0032] Wherein, the winding direction of the first steel wire is opposite to the winding direction of the second steel wire;The first steel wire is connected at the top end of the measuring mechanism, to apply upward tension to the measuring mechanism;The second steel wire is connected at the bottom end of the measuring mechanism, to apply downward tension to the measuring mechanism.
[0033] Specifically, the first steel wire is wound in the first wire winding section 210, the second steel wire is wound in the second wire winding section 220, and the winding direction of the first steel wire and the second steel wire is opposite.When driving piece 100 is forward, the first wire winding section 210 winds the first steel wire, the second wire winding section 220 releases the second steel wire, and the measuring mechanism is pulled upward at a constant speed by the first steel wire;When driving piece 100 is reversed, the second wire winding section 220 winds the second steel wire, the first wire winding section 210 releases the first steel wire, and the measuring mechanism is pulled downward at a constant speed by the second steel wire. In this way, the measuring mechanism can be pulled downward at a constant speed.
[0034] At the same time, since the second steel wire can pull the measuring mechanism downward, even if the metal slide rail on the lifting support is rusty and jammed, the second steel wire can provide downward force and pull the measuring mechanism down, preventing the measuring mechanism from stopping in water under its own gravity.
[0035] It should be noted that the winding direction refers to the direction of spiral or winding of the steel wire in a specific direction, when the first steel wire is wound clockwise on the winding drum 200, the second steel wire is counterclockwise;When the first steel wire is counterclockwise wound on the winding drum 200, the second steel wire is clockwise. The description of forward rotation and reverse rotation of driving piece 100 is only to describe the two opposite rotation directions, and does not limit the specific rotation direction of forward rotation and reverse rotation to clockwise or counterclockwise.
[0036] Further, a fixed pulley is also provided at the bottom end of the measuring mechanism, and the second steel wire is wound around the fixed pulley.
[0037] Specifically, two ends of the second steel wire are connected with the second winding section 220 and the bottom end of the measuring mechanism respectively, and the second steel wire is wound around the fixed pulley, and the traction direction of the second steel wire can be changed through the fixed pulley, so that the measuring mechanism can be pulled downward.
[0038] Further, the first steel wire has a first winding section wound around the first winding section 210, and a first drooping section drooping under the action of its own gravity; the second steel wire has a second winding section wound around the second winding section 220, and a second drooping section drooping under the action of its own gravity.
[0039] The first drooping section and the second drooping section are respectively located on opposite sides of the winding drum 200.
[0040] It should be noted that the first drooping section and the second drooping section refer to the sections that can naturally drop vertically under the action of their own gravity on the premise that they are not straightened by the measuring mechanism, and are only used to distinguish different sections and do not limit their posture when working. For example, when the first steel wire is straightened, the first drooping section is also straightened by the measuring mechanism, and its posture is no longer naturally dropped due to the influence of its own gravity.
[0041] Further, the winding drum 200 is provided with a first partition plate 230 and a third partition plate 250 at two ends thereof, and a second partition plate 240 is arranged between the first partition plate 230 and the third partition plate 250.
[0042] The region of the winding drum 200 between the first partition plate 230 and the second partition plate 240 constitutes the first winding section 210, and the region of the winding drum 200 between the second partition plate 240 and the third partition plate 250 constitutes the second winding section 220.
[0043] Specifically, the first partition plate 230, the second partition plate 240 and the third partition plate 250 are partitioning pieces arranged on the winding drum 200 to divide the region and separate the first steel wire and the second steel wire.
[0044] The first partition plate 230 and the third partition plate 250 are arranged at two ends of the winding drum 200, which can prevent the first steel wire and the second steel wire from crossing the end of the winding drum 200 when winding, thereby preventing the measuring mechanism from falling.
[0045] The second partition plate 240 is arranged between the first partition plate 230 and the second partition plate 240, and divides the winding drum 200 into the first winding section 210 and the second winding section 220, which can limit the first steel wire in the first winding section 210 and the second steel wire in the second winding section 220.
[0046] Further, the first partition 230, the second partition 240 and the third partition 250 are provided with fixing holes 290 for connecting the first steel wire or the second steel wire.
[0047] Specifically, the fixing holes 290 are formed on the first partition 230, the second partition 240 and the third partition 250, and the ends of the first steel wire and the second steel wire are threaded through the fixing holes 290 and then knotted or subjected to other means for increasing the outer diameter, so that the first steel wire and the second steel wire cannot be withdrawn from the fixing holes 290, thereby realizing the fixation of the first steel wire and the second steel wire to the winding drum 200.
[0048] Of course, the first winding wire section 210 and the second winding wire section 220 can be provided as independent components, the second partition 240 is arranged at the end of the first winding wire section 210, the second partition 240 is also arranged at the end of the second winding wire section 220, the two second partitions 240 are connected, and the two second partitions 240 are bolted through the fixing holes 290 on the two second partitions 240, so as to realize the connection of the first winding wire section 210 and the second winding wire section 220.
[0049] Further, the peripheral wall of the winding drum 200 is inwardly recessed to form a constraint groove 260, and the first steel wire and the second steel wire can at least partially extend into the constraint groove 260.
[0050] Further, the constraint groove 260 is arranged in a spiral shape.
[0051] In the process of winding the steel wire on the winding drum 200, in order to enable the steel wire to be uniformly wound along the length direction of the winding drum 200, the spiral constraint groove 260 is arranged on the peripheral wall of the winding drum 200, and the steel wire can be partially embedded in the constraint groove 260, so as to guide and constrain the distribution of the steel wire through the constraint groove 260.
[0052] Further, the winding drum 200 has a center mounting hole 270, and a limiting protrusion 280 is arranged on the inner wall of the center mounting hole 270.
[0053] The peripheral wall of the output shaft 110 is inwardly recessed to form a limiting notch 111, and the limiting protrusion 280 can extend into the limiting notch 111.
[0054] Specifically, the combination of the limiting notch 111 and the limiting protrusion 280 realizes the locking of the output shaft 110 and the winding drum 200. When the output shaft 110 is driven to rotate by the driving member 100, the limiting protrusion 280 on the output shaft 110 can tightly abut against the side wall of the limiting notch 111 and drive the winding drum 200 to rotate together, thereby avoiding the slippage between the winding drum 200 and the output shaft 110.
[0055] Further, the limiting protrusions 280 and the limiting gaps 111 are in the shape of long strips, and the limiting protrusions 280 pass through both ends of the winding drum 200.
[0056] Specifically, the limiting protrusions 280 are in the shape of long strips passing through both ends of the winding drum 200, so that the action range of the limiting protrusions 280 covers the whole length of the winding drum 200, the locking force between the winding drum 200 and the output shaft 110 is greater, and the stress of each position of the limiting protrusions 280 is more uniform.
[0057] Further, chain wheels 300 are arranged at both ends of the output shaft 110, the chain wheels 300 are engaged with chains, and the chains are connected with the measuring mechanism.
[0058] Specifically, when the output shaft 110 is driven to rotate by the driving member 100, the output shaft 110 drives the chain wheels 300 to rotate, and then drives the chains engaged with the chain wheels 300 to move and pull the measuring mechanism to rise and fall.
[0059] Importantly, the steel wire lifting and the chain lifting are integrated in one lifting mechanism in the application, so that the user can select different lifting modes according to different use scenes. Meanwhile, the two lifting modes are driven by the output shaft 110 of one driving member 100, so that the integration degree is higher, the cost is lower, and the structure is more compact.
[0060] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directional indications also change accordingly.
[0061] In addition, in the present application, the description such as "first", "second", "one" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.
[0062] In the utility model, unless another definite provision and limitation, the term "connect", "fix" and so on should do the broad sense understanding, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electric connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two element inside's intercommunication or two element's mutual action relation, unless another definite limitation.For the ordinary skill in the art, the specific meaning of the above-mentioned term in the utility model can be understood according to the specific circumstances.
[0063] In addition, the technical solutions of various embodiments of the present application can be combined with each other, but must be based on the realization of ordinary skilled in the art, when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, also not within the protection scope required by the present application.
Claims
1. A lifting mechanism for an acoustic Doppler current profiler, said Doppler current profiler comprising a measuring mechanism, said lifting mechanism being arranged above said measuring mechanism for moving said measuring mechanism in a height direction, characterized in that, The lifting mechanism comprises: a driving member having an output shaft, a winding drum being arranged on the output shaft; the winding drum comprises a first winding section and a second winding section, a first steel wire being wound on the first winding section, and a second steel wire being connected to the second winding section, the first steel wire and the second steel wire being connected to the measuring mechanism; wherein the winding direction of the first steel wire is opposite to the winding direction of the second steel wire; the first steel wire is connected to the top end of the measuring mechanism to apply an upward pulling force to the measuring mechanism; the second steel wire is connected to the bottom end of the measuring mechanism to apply a downward pulling force to the measuring mechanism.
2. A lifting mechanism for an acoustic Doppler current profiler according to claim 1, wherein, A fixed pulley is arranged at the bottom end of the measuring mechanism, and the second steel wire is wound on the fixed pulley.
3. A lifting mechanism for an acoustic Doppler current profiler as defined in claim 1, wherein The first steel wire has a first winding section wound on the first winding section, and a first drooping section drooping under the gravity of the first steel wire; the second steel wire has a second winding section wound on the second winding section, and a second drooping section drooping under the gravity of the second steel wire; The first drooping section and the second drooping section are respectively located at opposite sides of the winding drum.
4. A lifting mechanism for an acoustic Doppler current profiler according to claim 1, wherein, First and third partitions are respectively arranged at two ends of the winding drum, and a second partition is arranged between the first and third partitions; The region of the winding drum between the first and second partitions constitutes the first winding section, and the region of the winding drum between the second and third partitions constitutes the second winding section.
5. A lifting mechanism for an acoustic Doppler current profiler as defined in claim 4, wherein The first, second and third partitions are respectively provided with fixing holes for connecting the first or second steel wire.
6. A lifting mechanism for an acoustic Doppler current profiler according to claim 1, wherein, The peripheral wall of the winding drum is inwardly recessed to form a constraint groove, and the first and second steel wires can at least partially extend into the constraint groove.
7. A lifting mechanism for an acoustic Doppler current profiler as defined in claim 6, wherein The constraint groove is arranged in a spiral shape.
8. A lifting mechanism for an acoustic Doppler current profiler according to claim 1, wherein, The winding drum has a central mounting hole, and a limiting protrusion is arranged on the inner wall of the central mounting hole; The peripheral wall of the output shaft is inwardly recessed to form a limiting notch, and the limiting protrusion can extend into the limiting notch.
9. A lifting mechanism for an acoustic Doppler current profiler as defined in claim 8, wherein, The limiting protrusion and the limiting notch are arranged in a strip shape, and the limiting protrusion extends through both ends of the winding drum.
10. A lifting mechanism for an acoustic Doppler current profiler according to claim 1, wherein, Chain wheels are respectively arranged at both ends of the output shaft, and chains are engaged with the chain wheels, and the chains are connected to the measuring mechanism.