CN211618021U - Surface torrent-based rotating balancing instrument - Google Patents
Surface torrent-based rotating balancing instrument Download PDFInfo
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- CN211618021U CN211618021U CN202020094975.6U CN202020094975U CN211618021U CN 211618021 U CN211618021 U CN 211618021U CN 202020094975 U CN202020094975 U CN 202020094975U CN 211618021 U CN211618021 U CN 211618021U
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Abstract
The utility model provides a rotatory balancing appearance based on surface torrent, the utility model relates to an equipment technical field who is used for living or the operation under water in the transportation trade, the lower extreme of every wire winding lower carriage all is fixed with balanced blade, and the clearing hole has been seted up to the roof of forward toper cavity structure, and this clearing hole all link up the setting with wire winding center pin and winding handle, and wherein the lower extreme of wire winding center pin is fixed at the roof of forward toper cavity structure, and the reason of forward toper cavity structure is fixed with the fretwork support in the edge. When the balancing instrument is adjusted in the water to be placed in a balanced mode, when the balancing instrument encounters turbulent water flow, the balancing instrument is impacted by turbulent flow, the balancing instrument is integrally designed in an axisymmetric mode, the top of the balancing instrument is of a forward conical cavity structure, and the balancing blades are evenly distributed on the outer side of the forward conical cavity structure in a circumferential mode.
Description
Technical Field
The utility model relates to an equipment technical field that is used for living or operation under water in the transportation trade, concretely relates to based on surface torrent rotary balancing appearance.
Background
Hydrodynamic is the most widely used technique for humans, with natural water flow being the most convenient source of power for humans. It is extremely difficult in the prior art to make available and effectively control the driving force of the water flow. The free water flow on the river surface is unstable, and the free water flow in the sea is in motion, so that waves are often generated on the surface of the free water flow, and the balance of floaters in the water is seriously influenced. If the driving force of natural water flow could be used reasonably, it would be convenient to pass water over the band.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a reasonable in design's rotatory balancing appearance based on surface torrent, utilize the top structure that is the balanced blade of even circumference distribution and cavity that the cavity top outside is connected to reach the atress equilibrium under the torrent effect, make the balancing appearance keep steady rotation on the torrent surface.
In order to achieve the above purpose, the utility model adopts the following technical proposal: it comprises an upper structure and a lower structure;
the upper structure comprises an adjusting cone fixing bolt, a winding handle, a winding support ring, a winding upper support, a winding disc spool, a winding lower support, a lower baffle, a wiring lug, a fixing bolt flexible steel wire wiring lug, a winding support bearing, an upper baffle, a winding upper bearing, a winding central shaft and a winding lower bearing; the bottom of the adjusting cone fixing bolt is fixed with a fixing bolt flexible steel wire wiring lug, the adjusting cone fixing bolt is fixedly arranged on the top wall of the winding handle in a penetrating way, the winding handle is of a hollow structure and is arranged in a winding support ring, a winding support bearing is embedded in the winding support ring, and a threading hole is formed in the winding support bearing; the bottom surface of the winding support ring is connected with a plurality of winding upper brackets at equal angles, and the lower end of each winding upper bracket is connected with a winding lower bracket; the lower end of the winding handle is fixed with a wire spool, the outer wall of the lower end of the wire spool is fixed with a wiring lug, and the upper end and the lower end of the winding central shaft are respectively screwed in the wire spool by utilizing a winding upper bearing and a winding lower bearing; an upper baffle and a lower baffle are respectively fixed at the upper end and the lower end of the wire spool;
the lower structure comprises a balance blade, a leaf-shaped balancer connecting rod, a balancer cavity, an outer embedded blade, a balance ball, an adjusting cone flexible steel wire lug, a hollow bracket and an adjusting cone flexible steel wire; the lower end of each winding lower support is fixed with a balance blade, a plurality of balance blades are fixed on the top wall of a cavity of the balance instrument at equal angles, and the cavity of the balance instrument is composed of a forward conical cavity structure at the top, a cylindrical cavity structure in the middle and an inverted conical cavity structure at the lower part; the upper end and the lower end of the cylindrical cavity structure are respectively integrally formed with a forward conical cavity structure and an inverted conical cavity structure; the top wall of the forward conical cavity structure is provided with a through hole, the through hole, a winding center shaft and a winding handle are arranged in a penetrating mode, the lower end of the winding center shaft is fixed on the top wall of the forward conical cavity structure, a hollowed-out support is fixed on the bottom edge of the forward conical cavity structure, the hollowed-out support is arranged in the cylindrical cavity structure in a suspended mode, the adjusting cone is arranged in the cylindrical cavity structure in a suspended mode, an adjusting cone flexible steel wire wiring lug is fixed on the top wall of the adjusting cone flexible steel wire wiring lug, the balance ball is movably arranged in the inverted conical cavity structure, the lower end of the adjusting cone flexible steel wire is connected and fixed on the adjusting cone flexible steel wire wiring lug, and the upper end of the adjusting cone flexible steel wire sequentially penetrates through the hollowed-out support, the through hole; the blade-shaped balancer is sleeved and fixed on the outer wall of the cylindrical cavity structure by utilizing a plurality of blade-shaped balancer connecting rods; the circumference is the angle such as being provided with the embedded blade in a plurality of outside on the outer rampart of balancing appearance cavity, is the setting of non-crossing structure between the embedded blade in a plurality of outside, and is located the embedded blade in the same outside on cylindrical cavity structure and the back taper cavity structure and link up the setting mutually.
Furthermore, the circumference of the outer ring wall of the upper end of the winding handle is provided with a thread groove with equal angle.
Furthermore, sealant is filled at the joint of the upper end of the forward conical cavity structure and the winding central shaft.
After the structure is adopted, the beneficial effects of the utility model are that: the utility model provides a based on surface torrent rotary balancing appearance, the top structure that utilizes the balanced blade that is even circumference distribution and the cavity of cavity top outside connection reaches the atress balance under the torrent effect, makes the appearance keep steady rotation on the torrent surface.
Description of the drawings:
fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a front view of the present invention.
Fig. 3 is a top view of fig. 2.
FIG. 4 is a cross-sectional view taken along line M-M in FIG. 2
Fig. 5 is a sectional view taken along the direction N-N in fig. 2.
Fig. 6 is a sectional view taken along S-S in fig. 2.
Fig. 7 is a sectional view taken along line R-R in fig. 2.
Fig. 8 is a cross-sectional view taken along line T-T in fig. 2.
Fig. 9 is a sectional view taken along line U-U in fig. 2.
Fig. 10 is a cross-sectional view taken along line V-V in fig. 2.
Fig. 11 is a schematic diagram of the present invention for adjusting the placing direction and balance in water.
Fig. 12 is a schematic diagram of the rotation and buoyancy of the embedded blades in the water by the water flow.
Fig. 13 is a schematic diagram of the underwater rotation winding of the present invention.
Fig. 14 is a schematic diagram of the utility model for realizing the rotation balance of the balancing apparatus on the surface of the torrent in water.
Description of reference numerals:
the device comprises an adjusting cone fixing bolt 1, a winding handle 2, a threading hole 3, a winding support ring 4, a winding upper support 5, a winding disc spool 6, a winding lower support 7, a lower baffle 8, a wiring lug 9, a balance blade 10, a fixing bolt flexible steel wire wiring lug 11, a winding support bearing 12, a thread groove 13, sealant 14, an upper baffle 15, a winding upper bearing 16, a winding central shaft 17, a winding lower bearing 18, a leaf balancer 19, a leaf balancer connecting rod 20, a balancer cavity 21, a forward conical cavity structure 21-1, a cylindrical cavity structure 21-2, an inverted conical cavity structure 21-3, an outer embedded blade 22, a balance ball 23, an adjusting cone 24, an adjusting cone flexible steel wire wiring lug 25, a hollowed support 26, an adjusting cone flexible steel wire 27 and a through hole 28.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 to 10, the following technical solutions are adopted in the present embodiment: it comprises an upper structure and a lower structure;
the upper structure comprises an adjusting cone fixing bolt 1, a winding handle 2, a winding support ring 4, a winding upper support 5, a winding disc spool 6, a winding lower support 7, a lower baffle 8, a wiring lug 9, a fixing bolt flexible steel wire wiring lug 11, a winding support bearing 12, an upper baffle 15, a winding upper bearing 16, a winding central shaft 17 and a winding lower bearing 18; a fixing bolt flexible steel wire wiring lug 11 is fixed at the bottom of an adjusting cone fixing bolt 1, the adjusting cone fixing bolt 1 is fixedly arranged on the top wall of a winding handle 2 in a penetrating way, a thread groove 13 is formed in the circumference of the outer ring wall of the upper end of the winding handle 2 at an equal angle, the winding handle 2 is of a hollow structure and is arranged in a winding support ring 4, a winding support bearing 12 is embedded in the winding support ring 4, and a threading hole 3 is formed in the winding support bearing 12; the bottom surface of the winding support ring 4 is connected with a plurality of winding upper brackets 5 at equal angles, and the lower end of each winding upper bracket 5 is connected with a winding lower bracket 7; a wire spool 6 is fixed at the lower end of the winding handle 2, a wiring lug 9 is fixed on the outer wall of the lower end of the wire spool 6, and the upper end and the lower end of a winding central shaft 17 are respectively screwed inside the wire spool 6 by using a winding upper bearing 16 and a winding lower bearing 18; the upper end and the lower end of the wire spool 6 are respectively provided with an upper baffle 15 and a lower baffle 8, and the winding handle 2, the upper baffle 15, the wire spool 6 and the lower baffle 8 are of an integrated structure;
the lower structure comprises a balance blade 10, a leaf-shaped balancer 19, a leaf-shaped balancer connecting rod 20, a balancer cavity 21, an outer embedded blade 22, a balance ball 23, an adjusting cone 24, an adjusting cone flexible steel wire lug 25, a hollow bracket 26 and an adjusting cone flexible steel wire 27; the lower end of each winding lower support 7 is fixed with a balance blade 10, a plurality of balance blades 10 are fixed on the top wall of a balance instrument cavity 21 at equal angles, and the balance instrument cavity 21 consists of a forward conical cavity structure 21-1 at the top, a cylindrical cavity structure 21-2 at the middle and an inverted conical cavity structure 21-3 at the lower part; the upper end and the lower end of the cylindrical cavity structure 21-2 are respectively and integrally formed with a forward conical cavity structure 21-1 and an inverted conical cavity structure 21-3; the top wall of the forward conical cavity structure 21-1 is provided with a through hole 28, the winding center shaft 17 and the winding handle 2 are arranged in a penetrating way, the lower end of the winding center shaft 17 is fixed on the top wall of the forward conical cavity structure 21-1, the joint of the forward conical cavity structure 21-1 and the winding center shaft is sealed and stopped by sealant 14, the bottom edge of the forward conical cavity structure 21-1 is fixed with a hollowed-out support 26, the hollowed-out support 26 is arranged in the cylindrical cavity structure 21-2, the adjusting cone 24 is suspended in the cylindrical cavity structure 21-2, the top wall of the adjusting cone is fixed with an adjusting cone flexible steel wire wiring lug 25, the balance ball 23 is movably arranged in the inverted conical cavity structure 21-3, the lower end of the adjusting cone flexible steel wire 27 is connected and fixed on the adjusting cone flexible steel wire wiring lug 25, and the upper end, After passing through the hole 28, the winding central shaft 17 and the bottom wall of the winding handle, the wire is fixed on the flexible steel wire lug 11 of the fixing bolt; the blade-shaped balancer 19 is sleeved and fixed on the outer wall of the cylindrical cavity structure 21-2 by utilizing a plurality of blade-shaped balancer connecting rods 20; a plurality of outer embedded blades 22 are arranged on the outer ring wall of the cavity 21 of the balancing instrument at equal angles on the circumference, the plurality of outer embedded blades 22 are arranged in a non-crossed structure, and the same outer embedded blade 22 on the cylindrical cavity structure 21-2 and the inverted cone-shaped cavity structure 21-3 are arranged in a communicated manner.
The working principle of the specific embodiment is as follows:
adjusting the placing direction and balance in water:
referring to fig. 11, after the balancing apparatus is placed in water, because the balancing apparatus cavity 21, the blade-shaped balancer 19 and the embedded blade 22 on the outer side are combined, the balancing apparatus automatically floats on the water surface under the action of buoyancy, because the top of the balancing apparatus cavity 21 is of a forward conical structure, the lower part of the balancing apparatus cavity is of an inverted conical design, and the side wall of the balancing apparatus cavity is vertically designed along the circumference, the balancing ball 23 entering the water body is in a motion state, cannot stay at the upper part of the cavity under the guidance of the inner wall structure of the balancing apparatus cavity 21, and finally stays at the bottom of the inverted conical body at the lower part of the cavity, and the structures of the balancing ball 23 and; meanwhile, as the whole balancer is arranged in axial symmetry, the boundary outside the blade balancer 19 acts with water flow in the position adjustment process of the balancer, an upward thrust F1 is generated by a downward blade surface, the area of the upward blade surface is smaller than that of the downward blade surface, a downward pressure F2 is generated under the action of the water flow, at the moment, F1 is greater than F2, the action lines of F1 and F2 are not over the central line of the balancer and are not collinear, two forces form rotating moments with different included angles with the shaft and different in magnitude in space, so that the low-speed rotation generated in the inclination direction of the balancer is generated under the action of the two rotating moments, the rotation creates conditions for the downward movement of the balancing ball 23 in the cavity 21 of the balancer, and the adjustment of the placement position of the balancer is accelerated, namely the structure of the cavity 21, the movement rule of the balancing ball 23 and the position adjustment of the blade balancer 19 are promoted, finally, the balancing ball 23 stays at the bottom of the inverted cone-shaped cavity structure 21-3 in the cavity 21 of the balancing instrument, and the structural design of the balancing instrument keeps the transient balance of the balancing instrument in water and is placed in the forward direction without being inclined; because the blade-shaped balancer 19 is connected with the outer side of the cylindrical cavity structure 21-2, after the position of the balancer is well adjusted in the fluid, the structures below the blade-shaped balancer 19 are all immersed in the fluid, so that the overall balance of the balancer is enhanced;
the water flow acts on the outer embedded blades 22, producing rotation and buoyancy:
referring to fig. 12, the action of the fluid on the outer embedded blade 22, the horizontal component F3 of the fluid generates a rotation moment tangential to the balancing instrument through the action on the outer embedded blade 22, the mechanical energy generating rotation to the balancing instrument makes the balancing instrument rotate on the water surface, the upward component F4 generates buoyancy force in the same direction as the placement direction of the balancing instrument and tangential to the outer embedded blade 22, and the buoyancy force is matched with the cavity 21 of the balancing instrument and the blade-shaped balancer 19 to improve the floating performance of the balancing instrument; the change rule of the shape of the blade 22 embedded in the outer side of the cavity 21 of the balancing instrument makes the balancing instrument rotate more stably under the action of fluid;
and (3) rotating and winding in water:
under the action of water flow, the outer embedded blade 22 obtains a rotating moment, the external structure of the cavity 21 of the balancing instrument forms a rotating motion, the whole balancing instrument is designed in an axial symmetry mode, the rotation of the balancing instrument is influenced by factors such as the position and the size of the outer embedded blade 22, the size of the balancing instrument, the geometric spatial arrangement and the dimensional relation of the leaf-shaped balancer 19 and the balancing ball 23, and the like, a regulating cone 24 in the rotating balancing instrument is asynchronous with the rotation of the rotating balancing instrument under the action of inertia, winding operation is carried out by utilizing the asynchronous characteristic, namely, the lower end of a winding is led out downwards from the threading hole 3 and is tied on the wiring lug 9, the balancing instrument is placed in water and floats on the water surface, the water flow has impact force on the outer embedded blade 22, so that certain force is applied to the outer embedded blade 22, and the cavity 21 of the balancing instrument is driven to rotate after the outer embedded, under the combined action of the balance ball 23 in the cavity 21 of the balancer and the blade balancer 19 which is in an annular structure and is positioned outside the cylindrical cavity structure 21-2, the balancer keeps balance while rotating, eddy current generated in the rotating process is eliminated, in the whole rotating process, the winding handle 2, the wire spool 6, the upper baffle 15, the lower baffle 8 and the wiring lug 9 are all kept stationary, the wire is driven to be wound on the wire spool 6 while the cavity 21 of the balancer rotates, the height of the adjusting cone 24 is adjusted by adjusting the cone flexible steel wire 27 to adjust the sinking amount of the whole balancer in water, referring to fig. 13, in the figure, W1 is the angular velocity of the adjusting cone, W2 is the angular velocity of the balancer, and W1 and W2 are unequal to generate a winding function;
the torrent surface realizes the rotating balance of the balancing instrument:
after the placement direction and balance of the balancing instrument are adjusted in water, when the balancing instrument encounters turbulent water flow, the balancing instrument is impacted by turbulent flow, the balancing instrument is integrally designed in an axisymmetric mode, the top forward conical cavity structure 21-1 and the balancing blades 10 are uniformly and circumferentially distributed on the outer side of the forward conical cavity structure 21-1, when the balancing instrument is impacted by turbulent flow, the impact forces borne by the forward conical cavity structure 21-1 and the peripheries of the balancing blades 10 are balanced mutually, the balancing instrument keeps rotating balance, and referring to fig. 14, F5 and F6 in the drawing are acting forces of the balancing instrument which are subjected to turbulent flow in two symmetric directions, and F5
F6。
After adopting above-mentioned structure, this embodiment's beneficial effect is as follows:
1. the floating and balancing of the balancing instrument are achieved by utilizing the cavity of the balancing instrument, the cavity of the balancer and the embedded blades in the cavity;
2. the automatic adjustment of the balance placing position of the balance instrument is achieved by utilizing the movement of the balance ball in the cavity of the balance instrument;
3. the rotation of the balancing instrument can be achieved by utilizing the mechanical energy of the water flow for rotating the embedded blades on the cavity, and the buoyancy of the balancing instrument is improved by utilizing the upward component force of the water flow for the embedded blades on the cavity;
4. the structure of the blade profile is beneficial to forming a floating stable state while the balancer is used for ensuring that the buoyancy of the balancer is enhanced;
5. the rotating balancing instrument is provided with a rotating balancing cone, and the rotating balancing instrument rotates asynchronously under the action of inertia;
6. the top structure of the cavity and a plurality of balance blades are utilized to achieve the purpose that the balancer realizes rotary balance on the surface of water flow agitation.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (3)
1. The utility model provides a rotatory balancing appearance based on surface torrent which characterized in that: it comprises an upper structure and a lower structure;
the upper structure comprises an adjusting cone fixing bolt (1), a winding handle (2), a winding support ring (4), a winding upper bracket (5), a winding disc spool (6), a winding lower bracket (7), a lower baffle (8), a lug (9), a fixing bolt flexible steel wire lug (11), a winding support bearing (12), an upper baffle (15), a winding upper bearing (16), a winding central shaft (17) and a winding lower bearing (18); a fixing bolt flexible steel wire wiring lug (11) is fixed at the bottom of an adjusting cone fixing bolt (1), the adjusting cone fixing bolt (1) is fixedly arranged on the top wall of a winding handle (2) in a penetrating manner, the winding handle (2) is of a hollow structure and is arranged in a winding support ring (4), a winding support bearing (12) is embedded in the winding support ring (4), and a threading hole (3) is formed in the winding support bearing (12); the bottom surface of the winding support ring (4) is connected with a plurality of winding upper brackets (5) at equal angles, and the lower end of each winding upper bracket (5) is connected with a winding lower bracket (7); a wire spool (6) is fixed at the lower end of the winding handle (2), a wiring lug (9) is fixed on the outer wall of the lower end of the wire spool (6), and the upper end and the lower end of a winding central shaft (17) are respectively screwed inside the wire spool (6) through a wire winding upper bearing (16) and a wire winding lower bearing (18); an upper baffle (15) and a lower baffle (8) are respectively fixed at the upper end and the lower end of the wire spool (6);
the lower structure comprises a balance blade (10), a leaf-shaped balancer (19), a leaf-shaped balancer connecting rod (20), a balancer cavity (21), an outer embedded blade (22), a balance ball (23), an adjusting cone (24), an adjusting cone flexible steel wire lug (25), a hollow support (26) and an adjusting cone flexible steel wire (27); the lower end of each winding lower support (7) is fixedly provided with a balance blade (10), a plurality of balance blades (10) are fixed on the top wall of a balance instrument cavity (21) at equal angles, and the balance instrument cavity (21) is composed of a forward conical cavity structure (21-1) at the top, a cylindrical cavity structure (21-2) in the middle and an inverted conical cavity structure (21-3) at the lower part; the upper end and the lower end of the cylindrical cavity structure (21-2) are respectively and integrally formed with a forward conical cavity structure (21-1) and an inverted conical cavity structure (21-3); the top wall of the forward conical cavity structure (21-1) is provided with a through hole (28), the through hole (28), a winding center shaft (17) and a winding handle (2) are arranged in a run-through manner, the lower end of the winding center shaft (17) is fixed on the top wall of the forward conical cavity structure (21-1), the bottom edge of the forward conical cavity structure (21-1) is fixed with a hollowed-out support (26), the hollowed-out support (26) is arranged in the cylindrical cavity structure (21-2), the adjusting cone (24) is suspended in the cylindrical cavity structure (21-2), an adjusting cone flexible steel wire connection lug (25) is fixed on the top wall of the adjusting cone flexible steel wire connection lug, the balance ball (23) is movably arranged in the inverted conical cavity structure (21-3), the lower end of the adjusting cone flexible steel wire (27) is connected and fixed on the adjusting cone flexible steel wire connection lug (25), the upper end of the flexible steel wire (27) of the adjusting cone sequentially penetrates through the hollowed-out support (26), the through hole (28), the winding central shaft (17) and the bottom wall of the winding handle and then is fixed on the flexible steel wire lug (11) of the fixing bolt; the blade-shaped balancer (19) is sleeved and fixed on the outer wall of the cylindrical cavity structure (21-2) by utilizing a plurality of blade-shaped balancer connecting rods (20); a plurality of outer embedded blades (22) are arranged on the outer ring wall of the cavity (21) of the balancing instrument at equal angles on the circumference, the plurality of outer embedded blades (22) are arranged in a non-crossed structure, and the same outer embedded blade (22) positioned on the cylindrical cavity structure (21-2) and the inverted cone-shaped cavity structure (21-3) are communicated with each other.
2. The surface-torrent-based rotating balancer as claimed in claim 1, wherein: the circumference of the outer ring wall of the upper end of the winding handle (2) is provided with a thread groove (13) with equal angle.
3. The surface-torrent-based rotating balancer as claimed in claim 1, wherein: and sealant (14) is filled in the joint of the upper end of the forward conical cavity structure (21-1) and the winding central shaft (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020094975.6U CN211618021U (en) | 2020-01-16 | 2020-01-16 | Surface torrent-based rotating balancing instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020094975.6U CN211618021U (en) | 2020-01-16 | 2020-01-16 | Surface torrent-based rotating balancing instrument |
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| Publication Number | Publication Date |
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| CN211618021U true CN211618021U (en) | 2020-10-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020094975.6U Active CN211618021U (en) | 2020-01-16 | 2020-01-16 | Surface torrent-based rotating balancing instrument |
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| CN (1) | CN211618021U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114712A (en) * | 2020-01-16 | 2020-05-08 | 兰州理工大学 | Surface torrent-based rotating balancing instrument |
-
2020
- 2020-01-16 CN CN202020094975.6U patent/CN211618021U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111114712A (en) * | 2020-01-16 | 2020-05-08 | 兰州理工大学 | Surface torrent-based rotating balancing instrument |
| CN111114712B (en) * | 2020-01-16 | 2024-04-26 | 兰州理工大学 | Rotary balancing instrument based on surface torrent |
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