CN113437782B

CN113437782B - Charging device and charging method for flow measurement trolley

Info

Publication number: CN113437782B
Application number: CN202110887217.9A
Authority: CN
Inventors: 曹子聪; 吴宁声; 杨威; 房灵常; 蒋东进; 陆叶; 刘玉; 李林兴; 孙元; 李硕
Original assignee: Jiangsu Naiwch Corp
Current assignee: Jiangsu Naiwch Corp
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2022-07-29
Anticipated expiration: 2041-08-03
Also published as: CN113437782A

Abstract

The invention provides a charging device for a current measuring trolley, which comprises a charging pile, a charging end, a limiting mechanism and a controller, wherein the charging pile is arranged on the charging end; the charging pile is arranged at a position, close to a river bank, of the inhaul cable and comprises a base, an elastic mechanism, a damper, a first mounting plate, a second mounting plate, a connecting block, a first electrode seat and a charging pile electrode; the damper is arranged on the second mounting plate, and the extending direction of the damper is consistent with the extending direction of the inhaul cable; the first mounting plate is mounted on the back of the first electrode holder through an elastic mechanism; the charging end is arranged at the tail end of the current measuring trolley; the limiting mechanism comprises an in-situ switch arranged at the tail end of the flow measuring trolley and an in-situ stop block arranged on the base. The invention can reduce the requirement on the tension of the guy cable on the flow measuring trolley, can still keep higher moving precision and stable moving speed on the guy cable in a loose state, is not influenced by environments such as rain, fog and the like, completes the high-precision butt-joint charging action with the charging pile, and improves the cruising ability of the flow measuring trolley.

Description

Charging device and charging method for flow measurement trolley

Technical Field

The invention relates to the technical field of mobile radar flow measurement, in particular to a charging device and a charging method for a flow measurement trolley.

Background

At present, in order to detect parameters such as river flow, flow velocity and the like in real time, a mode of erecting a guy cable above a river, moving a trolley provided with a flow measuring device along the guy cable and completing flow measurement in the moving process is adopted in partial areas. However, the foregoing method has the following problems: firstly, the outdoor environment is severe, especially in some areas, the wind power level above the river is high due to geographical positions and the like, and the phenomenon that the flow measuring trolley inclines out of the inhaul cable is easy to occur. Secondly, in order to make the dolly can move smoothly, both have higher requirement to the tension and the horizontality of cable, the indirect cable fixed base that requires river both sides needs to be enough firm. Thirdly, part of the flow measuring trolleys need to be charged frequently, and in order to reduce the workload of operation and maintenance personnel, sometimes, charging piles are directly installed at the end parts of the stay cables, so that the flow measuring trolleys can be charged in time; however, compared with the traditional current measuring trolley, the current measuring trolley with the charging pile has higher requirement on the tension of the inhaul cable, once the inhaul cable is slightly loosened, a larger inclination angle is generated when the current measuring trolley moves to the position near the end part of the inhaul cable, and the charging pile is hardly charged for electrode alignment.

In practical application, most trolleys are suspended on steel cables to run, but on one hand, trolleys are not suitable for suspension on some occasions, particularly when flow measuring trolleys carry other tasks or people/goods carrying trolleys, and on the other hand, the problem that the travelling precision is lost and then charging fails due to the fact that inhaul cables are loosened cannot be solved through the suspended running mode. For the scene that the flow measuring trolley must walk above the stay cable, a part of the flow measuring trolley can be provided with a ring buckle on the side surface or the bottom of the trolley body, the ring buckle is sleeved on the steel cable, the trolley can be prevented from being overturned into a river when wind power is too large, but the overturned trolley is hung on the steel cable, manual field maintenance is needed, the trolley cannot continue to walk, and the charging action cannot be completed. Therefore, at present, only a more stable cable fixing base or other tensioning power devices can be arranged on both sides of the river, for example, a dual-cableway flow measuring device is disclosed in the patent application CN202120762868.0, and the flow measuring trolley is controlled by a winch and an automatic door to move on the surface of a steel rope track. However, in some areas, due to space limitation, it is difficult to build a cable with high stability, and the cable is gradually loosened in the using process, so that frequent maintenance is required for workers. And, when cable tension is not enough, not only the dolly removes the precision and reduces, finally leads to charging failure, has also increased the risk of tumbling of dolly simultaneously.

Disclosure of Invention

The invention aims to provide a charging device and a charging method for a flow measurement trolley, which can reduce the requirement on the tension of a guy cable of the flow measurement trolley, can still keep higher moving precision and stable moving speed on the guy cable in a loose state, are not influenced by environments such as rain, fog and the like, complete high-precision butt-joint charging action with a charging pile, and improve the cruising ability of the flow measurement trolley.

In a first aspect, an embodiment of the present invention provides a charging device for a current measuring trolley, where the charging device includes a charging pile, a charging end, a limiting mechanism, and a controller;

the flow measuring trolley is arranged on two guys erected above a river, and carries the radar wave flow measuring device to move along the extension direction of the guys under the action of the walking driving device, so that the radar wave flow measuring device measures the river flow of the current area; the two inhaul cables have a height difference, so that a plane formed by the two inhaul cables forms a first included angle with a horizontal plane, and the tension of each inhaul cable is smaller than a first preset tension threshold value, so that the inhaul cables are in a loose state; the flow measuring trolley comprises a trolley body, a mounting plate and N roller assemblies; the mounting plate is mounted on the trolley body, and the N roller assemblies are mounted on the side face, close to the stay cable, of the mounting plate; the N roller assemblies are evenly distributed on the two pull cables; each of the roller assemblies includes a pair of upper and lower rollers having a position restricting relationship; the tension of a guy cable between the roller assemblies is greater than a second preset tension threshold value, is in a tightening state and is parallel to the mounting plate; n is a positive integer greater than or equal to 4;

The charging pile is arranged at a position, close to a river bank, of the inhaul cable and comprises a base, an elastic mechanism, a damper, a first mounting plate, a second mounting plate, a connecting block, a first electrode seat and a charging pile electrode; the base is fixed on the inhaul cable, two ends of the base are respectively provided with a horizontal through hole, the position of each horizontal through hole is matched with that of the inhaul cable, and the inhaul cable penetrates through and is fixed in the horizontal through holes; the damper is arranged on the second mounting plate, and the extending direction of the damper is consistent with the extending direction of the inhaul cable; one end of the connecting block is fixed below the base, and the other end of the connecting block is arranged on the damper and moves along the damper; the first mounting plate is mounted on the back of the first electrode holder through an elastic mechanism, and the charging pile electrode is arranged on the front of the first electrode holder and faces the tail end of the current measuring trolley;

the charging end is arranged at the tail end of the current measuring trolley and comprises a second electrode holder and a trolley electrode; the orientation of the trolley electrode is opposite to that of the charging pile electrode, and the trolley electrode and the charging pile electrode are matched in position;

the limiting mechanism comprises an in-situ switch arranged at the tail end of the flow measuring trolley and an in-situ stop block arranged on the base, and the in-situ switch corresponds to the in-situ stop block in position;

The controller receives a charging instruction sent from the outside, moves the flow measuring trolley to enable the tail part of the flow measuring trolley to gradually approach the charging pile, and obtains the distance between the tail part of the flow measuring trolley and the charging pile in real time, when the distance between the tail of the current measuring trolley and the charging pile is smaller than a preset distance threshold value, the moving speed of the current measuring trolley is reduced, so that the trolley electrode is in contact with the charging pile electrode and applies a first pushing force on the charging pile electrode, the charging pile electrode compresses the elastic mechanism under the action of the first pushing force and applies a second pushing force on the first mounting plate through the elastic mechanism, so that the damper carries the charging pile electrode to move relative to the connecting block, and offset the second driving force gradually at the removal in-process, meet until normal position switch and normal position dog, the flow measurement dolly stops to remove, fills electric pile electrode butt on the dolly electrode under the elastic mechanism effect of compression state to the distance between first mounting panel and the base is greater than safe distance.

As a preferred example, at least two elongated mounting grooves are formed in one side of the second electrode holder facing the first electrode holder, and the trolley electrodes are fully paved in the elongated mounting grooves in one-to-one correspondence;

fill electric pile electrode including installing at first electrode holder towards the second electrode holder on one side at least two be rectangular protruding portions, the position and the size of protruding portion all with two rectangular shape mounting groove looks adaptations.

As one of the preferred example, the both ends of base respectively distribute and are provided with four at least vertical through-holes, and vertical through-hole symmetry sets up in the cable both sides, fills electric pile set screw and passes vertical through-hole in order to fix the cable in horizontal through-hole.

As a preferred example, the second electrode holder is fixed at the tail end of the flow measuring trolley through a position adjusting mechanism;

the position adjusting mechanism comprises an L-shaped buckle arranged on the flow measuring trolley, one edge of the buckle is fixed on the second electrode seat, a plurality of strip-shaped mounting through holes are formed in the other edge of the buckle, and position adjusting screws penetrate through the mounting through holes in a one-to-one correspondence mode so as to fix the buckle on the tail portion of the flow measuring trolley; and the position of the charging end is adjusted by adjusting the position relation between the position adjusting screw and the mounting through hole.

As a preferred example, the connecting block is wedge-shaped, so that the electrode surface of the charging pile and the electrode surface of the trolley are vertically arranged and form a second included angle with the plane of the inhaul cable, and the second included angle is the same as the first included angle.

As a preferred example thereof, the safety distance is greater than a difference between a free length and a compression limit length of the elastic means.

As a preferable example of the above, the elastic mechanism includes a spring, a charging pile connecting plate, a position adjusting screw, and a spring pile;

The charging pile comprises a charging pile connecting plate, a first electrode seat, a second electrode seat, a spring pile and a position adjusting screw, wherein a plurality of through holes are distributed in the charging pile connecting plate; the spring is connected between the spring pile and the first mounting plate.

In a second aspect, an embodiment of the present invention provides a charging method for a flow measurement trolley, where the charging method is implemented based on the foregoing charging apparatus, and includes the following steps:

s1, loosening the base and adjusting the tension and position of the inhaul cable;

s2, the adjusted inhaul cable passes through the base, so that the base is fixed on the inhaul cable;

s3, adjusting the rotating speed of the servo motor to enable the current measuring trolley to move towards the charging pile along the inhaul cable until the trolley electrode is connected with the charging pile electrode;

s4, continuously moving the flow measuring trolley in the original direction to apply a horizontal force on the elastic mechanism to compress the elastic mechanism in the moving process of the flow measuring trolley, and enabling the first electrode holder to approach the base along the damper under the action of the elastic force of the elastic mechanism until the in-situ switch is connected with the in-situ stop block;

and S5, stopping moving the flow measurement trolley, cutting off the servo motor, self-locking the flow measurement trolley at the current position, enabling the charging pile electrode to abut against the trolley electrode under the action of the elastic mechanism in a compressed state, and enabling the distance between the first mounting plate and the base to be larger than a safety distance.

Compared with the prior art, the technical scheme of the invention has the following remarkable beneficial effects:

(1) the invention can reduce the requirement on the tension of the guy cable on the flow measuring trolley, can still keep higher moving precision and stable moving speed on the guy cable in a loose state, is not influenced by environments such as rain, fog and the like, completes the high-precision butt-joint charging action with the charging pile, and improves the cruising ability of the flow measuring trolley.

(2) The invention can adjust the installation mode of the flow measuring trolley according to the actual situation: the flow measurement device is placed above the stay cable or hung below the stay cable, so that the flow measurement requirements under different scenes can be met; simultaneously, the structure of the charging pile is adjusted, so that the charging pile can adapt to the charging requirements of the current measuring trolley under two mounting modes.

(3) The elastic mechanism and the damper are combined to absorb part of impact force of the trolley during backward charging step by step, so that the structure of the trolley is stabilized, and the phenomenon that the trolley and the charging pile are damaged due to too strong impact force generated when the trolley is contacted with the charging pile is avoided; simultaneously, with the help of normal position switch and normal position dog control current surveying dolly the stop position, make to fill electric pile electrode can be on the dolly electrode in the butt of elastic mechanism's elastic force effect down, reduce a great deal of risks such as the dislocation takes place in the charging process.

(4) Fill electric pile and pass through the base to be fixed on the cable, do not influence the routine maintenance and the parameter adjustment of cable, utilize tightening force to guarantee the electrode and fill electric pile's relatively stable when can guaranteeing that the cable rocks simultaneously.

It should be understood that all combinations of the foregoing concepts and additional concepts described in greater detail below can be considered as part of the inventive subject matter of this disclosure unless such concepts are mutually inconsistent. In addition, all combinations of claimed subject matter are considered a part of the presently disclosed subject matter.

The foregoing and other aspects, embodiments and features of the present teachings can be more fully understood from the following description taken in conjunction with the accompanying drawings. Additional aspects of the present invention, such as features and/or advantages of exemplary embodiments, will be apparent from the description which follows, or may be learned by practice of specific embodiments in accordance with the teachings of the present invention.

Drawings

The figures are not intended to be drawn to scale. In the drawings, each identical or nearly identical component that is illustrated in various figures may be represented by a like numeral. For purposes of clarity, not every component may be labeled in every drawing. Embodiments of various aspects of the present invention will now be described, by way of example, with reference to the accompanying drawings, in which:

Fig. 1 is a schematic structural diagram of a mobile radar wave flow measurement system according to an embodiment of the present invention.

Fig. 2 is a schematic view of a cable structure of one example.

FIG. 3 is an angular schematic view of a scroll wheel assembly, one example of which.

Fig. 4 is a schematic structural diagram of a charging device for a flow measurement trolley according to an embodiment of the invention.

Fig. 5 is a schematic structural diagram of a base according to an embodiment of the present invention.

Detailed Description

In order to better understand the technical content of the present invention, specific embodiments are described below with reference to the accompanying drawings.

In this disclosure, aspects of the present invention are described with reference to the accompanying drawings, in which a number of illustrative embodiments are shown. Embodiments of the present disclosure are not necessarily defined to include all aspects of the invention. It should be appreciated that the various concepts and embodiments described above, as well as those described in greater detail below, may be implemented in any of numerous ways, as the disclosed concepts and embodiments are not limited to any one implementation. In addition, some aspects of the present disclosure may be used alone, or in any suitable combination with other aspects of the present disclosure.

Fig. 4 is a schematic structural diagram of a charging device for a flow measuring trolley 300 according to an embodiment of the present invention. The charging device is suitable for a mobile radar wave flow measuring system with a guy cable 11 structure with enough traditional tension, and is also suitable for a mobile radar wave flow measuring system with a guy cable 11 structure in the embodiment.

Referring to fig. 4, the charging pile 13 is installed on the guy cable 11 near the river bank, and includes a base 12, an elastic mechanism 21, a damper 15, a first mounting plate 20, a second mounting plate 14, a connecting block 18, a first electrode holder and a charging pile electrode; the base 12 is fixed on the inhaul cable 11, two ends of the base 12 are respectively provided with a horizontal through hole, the position of the horizontal through hole is matched with the position of the inhaul cable 11, and the inhaul cable 11 penetrates through and is fixed in the horizontal through hole. The first mounting plate 20 and the second mounting plate 14 are connected with each other and are L-shaped, and the damper 15 is mounted on the second mounting plate 14 and the extending direction of the damper is consistent with the extending direction of the inhaul cable 11; one end of the connecting block 18 is fixed below the base 12, and the other end is mounted on the damper 15 and moves along the damper 15; the first mounting plate 20 is mounted on the back of the first electrode holder through an elastic mechanism 21, and the charging pile electrode is arranged on the front of the first electrode holder and faces the tail end of the current measuring trolley 300; the charging end is arranged at the tail end of the current measuring trolley 300 and comprises a second electrode holder 23 and a trolley electrode; the orientation of the trolley electrode is opposite to that of the charging pile electrode, and the trolley electrode and the charging pile electrode are matched in position; the limiting mechanism comprises a home position switch 16 arranged at the tail end of the flow measuring trolley 300 and a home position stop block 17 arranged on the base 12, and the positions of the home position switch 16 and the home position stop block 17 correspond to each other; the controller receives a charging instruction sent from the outside, the current measuring trolley 300 is moved to enable the tail of the current measuring trolley 300 to gradually approach the charging pile 13, the distance between the tail of the current measuring trolley 300 and the charging pile 13 is obtained in real time, when the distance between the tail of the current measuring trolley 300 and the charging pile 13 is smaller than a preset distance threshold value, the moving speed of the current measuring trolley 300 is reduced, a trolley electrode is enabled to be in contact with a charging pile electrode and to exert a first pushing force on the charging pile electrode, the charging pile electrode compresses the elastic mechanism 21 under the action of the first pushing force and exerts a second pushing force on the first mounting plate 20 through the elastic mechanism 21, the damper 15 carries the charging pile electrode to move relative to the connecting block 18, the second pushing force is gradually counteracted in the moving process until the home position switch 16 is connected with the home position stop block 17, the current measuring trolley 300 stops moving, and the charging pile electrode is abutted to the trolley electrode under the action of the elastic mechanism 21 in a compressed state, and the distance between the first mounting plate 20 and the base 12 is greater than the safety distance a.

Illustratively, the elastic mechanism 21 includes a spring, a charging pile connection plate 22, a position adjusting screw, and a spring pile; a plurality of through holes are distributed on the charging pile connecting plate 22, the first electrode seat is fixedly connected to one side of the charging pile connecting plate 22, and the position adjusting screws penetrate through partial through holes in the charging pile connecting plate 22 to enable the spring piles to be connected to the other side of the charging pile connecting plate 22; the spring is connected between the spring pile and the first mounting plate 34.

When the in-situ switch 16 touches the in-situ stop block 17, the control device drives the trolley to stop, and the relative position of the trolley and the inhaul cable 11 can be fixed due to the power-off self-locking characteristic of the servo motor, so that a relative stabilizing effect is achieved. The spring is in compression state this moment, fills electric pile 13 and receives spring force effect itself to have the effort towards charging electrode to make and fill electric pile electrode can be with a great effort butt on dolly electrode surface, avoid rocking the electrode separation that leads to.

In the present embodiment, the driving force of the trolley is less than or equal to the limit elastic force of the elastic mechanism 21, and in combination with the damper 15, when the trolley is in the charging state, the elastic mechanism 21 is not compressed to the limit, and a certain margin is left. The safety distance a here therefore only needs to be greater than the difference between the free length and the compression limit length of the elastic means 21, for example 5 cm.

As shown in fig. 5, at least four vertical through holes are respectively distributed at two ends of the base 12, the vertical through holes are symmetrically arranged at two sides of the cable 11, and the charging pile fixing screws 19 penetrate through the vertical through holes to fix the cable 11 in the horizontal through holes. Fill electric pile 13 and fix on cable 11 through base 12, do not influence the routine maintenance and the parameter adjustment of cable 11, utilize tightening force to guarantee the electrode and fill electric pile 13's relatively stable when can guaranteeing that cable 11 rocks simultaneously. When the cable 11 needs tensioning again, only need loosen and fill electric pile fixed screw 19, after the tensioning of cable 11, screw up again and fill electric pile fixed screw 19, make again the cable 11 joint in the horizontal through-hole of base 12 can. Preferably, can also set up a plurality of joint spare in horizontal through-hole, the parcel is equipped with structures such as the great cushion of frictional force on the joint spare, makes the setting that base 12 can be more firm at 11 tip of cable or near-end portion. Different from the installation mode that electric pile 13 is fixed on the pillar of 11 tip of cable or 11 tip of cable in the tradition, this embodiment can fix electric pile 13 on cable 11, and not necessarily be 11 tip of cable to the harsh requirement of electric pile 13 installation to the river bank place has been reduced.

In order to improve the charging effect, red copper electrodes are selected for charging pile electrodes and trolley electrodes. Specifically, at least two elongated mounting grooves are formed in one side, facing the first electrode holder, of the second electrode holder 23, and the trolley electrodes are fully laid in the elongated mounting grooves in a one-to-one correspondence manner; fill electric pile electrode including install first electrode holder towards the second electrode holder 23 one side on at least two be rectangular protruding portions, the position and the size of protruding portion all with two rectangular shape mounting groove looks adaptations. Preferably, the width and the sectional area of the protruding part are slightly smaller than the mounting grooves matched with the protruding part, so that structural interference between the protruding part and the mounting grooves when the protruding part and the mounting grooves are connected can be effectively avoided, and butt joint failure is caused. In addition, the upper surface of dolly electrode still remains the clearance apart from the mounting groove top to make the protruding portion can partly imbed in the mounting groove, shelter from the dislocation risk that further reduces cable 11 and acutely rock the result in through the lateral wall of mounting groove.

Regarding the installation mode of the second electrode holder 23, the second electrode holder 23 is fixed at the tail end of the flow measuring trolley 300 through the position adjusting mechanism 24; the position adjusting mechanism 24 comprises an L-shaped buckle arranged on the flow measuring trolley 300, one edge of the buckle is fixed on the second electrode seat 23, the other edge of the buckle is provided with a plurality of strip-shaped mounting through holes, and the position adjusting screws penetrate through the mounting through holes in a one-to-one correspondence manner so as to fix the buckle on the tail part of the flow measuring trolley 300; and the position of the second electrode holder 23 is adjusted by adjusting the positional relationship of the position adjustment screw and the mounting through-hole.

In some examples, the position adjusting mechanism 24 further comprises a rotating shaft having a locking mechanism, so that the second electrode holder 23 can be adjusted in position and angle at the same time. Correspondingly, the connecting block 18 is wedge-shaped, so that the electrode surface of the charging pile and the electrode surface of the trolley are vertically arranged and form a second included angle with the plane of the inhaul cable 11, and the second included angle is the same as the first included angle. This makes and fills electric pile electrode face/dolly electrode face and can personally submit vertical relation or approximate vertical relation with the level, so, no matter the current-measuring dolly 300 walks in cable 11 top or hangs in cable 11 below, all can realize the function of charging, after current-measuring dolly 300 switches the walking mode, only need to finely tune the angle of dolly electrode can.

On this basis, the present embodiment also provides a charging method for a mobile radar wave current surveying system, including the following steps:

and S1, releasing the base 12 and adjusting the tension and the position of the cable 11.

S2, the adjusted cable 11 is passed through the base 12, and the base 12 is fixed to the cable 11.

And S3, adjusting the rotating speed of the servo motor to enable the current measuring trolley 300 to move towards the charging pile 13 along the inhaul cable 11 until the trolley electrode is connected with the charging pile electrode.

S4, moving the flow-measuring cart 300 in the original direction, so that the flow-measuring cart 300 exerts a horizontal force on the elastic mechanism 21 to compress the elastic mechanism 21 during the moving process, and the first electrode holder approaches the base 12 along the damper 15 under the elastic force of the elastic mechanism 21 until the home switch 16 is connected to the home stop 17.

S5, stopping moving the current measuring trolley 300, cutting off the servo motor, self-locking the current measuring trolley 300 at the current position, enabling the charging pile electrode to abut against the trolley electrode under the action of the elastic mechanism 21 in the compressed state, and enabling the distance between the first mounting plate 20 and the base 12 to be larger than a preset distance threshold value.

As described above, the charging device of the present invention can also be used in a mobile radar wave current measuring system in a cable-loose state. In order to facilitate understanding of the technical solution of the present embodiment, the present embodiment first briefly describes the mobile radar wave flow measuring system with the structure of the loose cable 11.

Fig. 1 is a schematic structural diagram of a mobile radar wave flow measurement system according to an embodiment of the present invention. Referring to fig. 1, the mobile radar flow measurement system comprises a flow measurement trolley 300, and a radar wave flow measurement device and a walking driving device which are arranged on the flow measurement trolley 300.

The flow measuring trolley 300 is arranged on two guys 11 erected above a river, and carries a radar wave flow measuring device to move along the extension direction of the guys 11 under the action of a walking driving device, so that the radar wave flow measuring device measures the river flow of the current area; the height difference delta h is formed between the two inhaul cables 11, so that a first included angle is formed between a plane formed by the two inhaul cables 11 and the horizontal plane, and the tension of each inhaul cable 11 is smaller than a preset tension threshold value, so that the inhaul cables 11 are in a loose state. Fig. 2 is a schematic structural diagram of the guy cable 11 of one example, the horizontal distance between the guy cables 11 is 218mm, the linear distance is 230mm, the first included angle is about 30 degrees, and the height difference of the guy cable 11 is about 72mm, which is easily satisfied for most current measuring scenes. Taking a 6mm steel wire rope with a span less than 150m as an example, the slack state of the whole cable 11 means that the tension range of the cable 11 is as follows: within 100-250 kg.

The flow measuring trolley 300 comprises a trolley body, a mounting plate 34 and N roller assemblies; the mounting panel 34 is installed on the dolly body, and N roller assembly install on the mounting panel 34 is close to the side of cable 11.

The N roller assemblies are evenly distributed on the two inhaul cables 11; each of the roller assemblies includes a pair of upper rollers 31 and lower idlers 32 having a position restricting relationship; the tension of the inhaul cable 11 between the roller assemblies is larger than a second preset tension threshold value, is in a tightening state and is parallel to the mounting plate 34. Because the height difference exists between the guys 11, the flow measuring trolley 300 can enable the gravity center to be closer to the lower guys 11, so that the lower guys 11 are more easily in a tightened state under the action of enough pressure, and then the other higher guys 11 are indirectly influenced to be tightened through the pulling action of the flow measuring trolley 300. Similarly, taking a steel wire rope of 6mm and a span less than 150m as an example, the tension state of the cable 11 in the range of the mounting plate 34 means that the tension range of the cable 11 is: 10-30 kg. And in order to ensure that the part of the cable 11 is in a straight state, the distance between the adjacent roller assemblies on the same cable 11 is generally less than 340 mm.

For example, N may be 4, that is, 4 roller assemblies are disposed on each lateral flow cart 300, and are distributed at four corners of the mounting plate 34, so as to balance the moving posture of the lateral flow cart 300. For convenience of description, in this embodiment, the setting cart has only 4 roller assemblies. In practical application, the number of the roller assemblies can be freely adjusted according to the volume, the weight, the surrounding environment parameters and the like of the flow measuring trolley 300, for example, when the weight of the flow measuring trolley 300 is too large or the environmental wind is strong, more roller assemblies are arranged to better stabilize the body; or when the flow measuring trolley 300 is too large in size, the guy cable 11 between adjacent roller assemblies can be kept in a tightened state all the time by arranging a plurality of groups of roller assemblies. In addition, because the height difference exists between the guys 11, the risk that the flow measuring trolley 300 vibrates under the action of wind force to cause large swing amplitude is reduced, and the possibility of tipping the flow measuring trolley 300 is reduced.

The central position of the traveling surface of each upper roller 31 and each lower catch wheel 32 is provided with a circular groove, and the size of each groove is matched with that of the inhaul cable 11; all the upper rollers 31 are positioned on the same side of the corresponding cable 11, and each upper roller 31 is obliquely arranged on the mounting plate 34 and placed or hung on the cable 11 under the action of the gravity of the trolley body; all lower catch wheels 32 are parallel to mounting plate 34; each group of upper idler wheels 31 and lower catch wheels 32 are respectively clamped on two sides of the corresponding inhaul cable 11, and the inhaul cable 11 is limited between the grooves of the upper idler wheels and the lower catch wheels; when the upper roller 31 contacts the cable 11, a gap is formed between the bottom of the groove of the lower catch wheel 32 and the cable 11, and the gap distance value is smaller than the diameter value of the cable 11, so that the cable 11 cannot be pulled out of the gap. Illustratively, the value of the gap distance may be 0.5 times the value of the diameter of the cable 11.

The guy cable 11 is limited between the upper roller 31 and the lower catch wheel 32 through the structure, when no wind exists or the wind power is small, the current measuring trolley 300 presses the self weight on the upper roller 31, the lower catch wheel 32 is located on the side surface of the current measuring trolley, when the wind power is gradually increased and the body of the current measuring trolley 300 begins to shake, even if the guy cable 11 is driven by the upper roller 31 to leave the groove and is influenced by the lower catch wheel 32 arranged outside the groove of the upper roller 31, the guy cable 11 is still limited between the upper roller 31 and the lower catch wheel, particularly, the upper roller 31 and the lower catch wheel are arranged in a staggered mode, a certain overlapped area exists between the upper roller 31 and the lower catch wheel, and as long as the width and the depth of the overlapped area are limited, the guy cable 11 can be ensured to be locked in a semi-surrounded mode, or the guy cable 11 is not provided with enough transverse moving space to be wound on the current measuring trolley 300 to cause difficulty in moving or even overturning of the trolley. In this embodiment, the zipper is not separated and is controlled by the tightening angle of the upper roller 31 and the lower catch wheel 32, and the structural angle is controlled by the combination of the rotation freedom and the tension. The pretension of the cable 11 ensures that the cable 11 is in a straight line over this small width of the car, which is understood to be in a circular groove formed by the upper roller 31 and the lower catch 32. The upper roller 31 is used for bearing the weight of the trolley, and if the trolley shakes to cause the trolley to touch the lower catch wheel 32, the lower catch wheel 32 can provide a reaction force for the trolley, so that the stability of the trolley is maintained. This is why the flow measuring cart 300 of the present embodiment can travel over the wire 11 or under the wire 11. Even if the cart is located above the cables 11, the cart never topples as long as the two cables 11 are kept separated. Generally, the size of the trolley under the scene is large, the distance between the guys 11 is indirectly required to be large, and even if the river span is large, the situation that the guys 11 are twisted with each other is difficult to occur when the wind power is large. When the trolley is positioned above the cable 11, only the orientation of the upper roller 31 and the lower gear needs to be adjusted, and the functions of the upper roller and the lower gear are interchanged, so that the basic principles of limiting the tension degree of the cable 11 in the trolley range and driving the trolley to travel at high precision are the same. Moreover, even wind-force is big enough to make the current surveying dolly tumble (need very rare wind-force just can accomplish), because the wheel components of current surveying dolly has restricted cable 11, cable 11 also can then be the state of twisting mutually, and after wind-force reduced, the staff only need resume cable 11 again, and current surveying dolly can resume work immediately, need not to do more maintenance actions, has reduced the maintenance cost undoubtedly and has maintained the degree of difficulty.

Under the theoretical state, can make cable 11 and the tank bottom contact of last gyro wheel 31 recess when the walking face of cable 11 and last gyro wheel 31 is perpendicular, reduce the resistance that cable 11 frictional force caused to flow measuring dolly 300. Assuming that the angle of the flow measuring trolley 300 relative to the water surface is a, as long as the included angle between the upper roller 31 and the mounting plate 34 is (90-a) °, the upper roller 31 and the water surface form an included angle of 90 °, so that the stay cable 11 in a horizontal state right above the mounting plate 34 is only contacted with the bottom of the upper roller 31, and the friction force when the upper roller 31 is lifted is minimum. Referring to fig. 3, in order to prevent the cable 11 from coming out of the roller assembly, the upper roller 31 and the lower gear are respectively located at two sides of the cable 11, an included angle is formed between the upper roller and the lower gear, the included angle ranges from 135 ± 3 °, the upper roller and the lower gear are staggered, but the distance between the upper roller and the lower gear is smaller, and the distance range in the horizontal direction is 51 ± 0.3mm, so as to limit the transverse movement distance of the cable 11. Therefore, the inclination angle of the upper roller 31 is closely related to the height difference between the two wires 11.

The walking driving device comprises a driving wheel 33, a driving wheel limiter and a rotating motor, wherein the driving wheel 33 and the driving wheel limiter are connected with the driving wheel 33 in a clamped mode, the position of the driving wheel limiter located on the inner side of the inhaul cable 11 is adjusted, the inhaul cable 11 is abutted to the driving wheel 33, the rotating motor adjusts the rotating speed of an output shaft of the rotating motor according to an external control instruction, so that the driving wheel 33 exerts a driving force on the trolley body, and the trolley body walks along the inhaul cable 11.

The driving wheel 33 is used for applying power to the flow measuring trolley 300 to drive the upper roller 31 to roll on the cable 11, so that the flow measuring trolley 300 can move left and right along the extension direction of the cable 11 under the action of the driving force. Illustratively, the driving wheel 33 is made of polycarbonate, and the upper roller 31 and the lower catch wheel 32 are made of metal, so that the friction force between the driving wheel 33 and the cable 11 is increased, and the friction force between the upper roller 31, the lower catch wheel 32 and the cable 11 is reduced, thereby improving the moving precision of the flow measuring trolley 300 and reducing the slip risk. Regarding the angle of the driving wheel 33, since it is mainly used to provide the driving force, it can be autonomously disposed according to the structural requirements, for example, disposed in parallel with the mounting plate 34, etc.

Through the structural design, the flow measuring trolley 300 can ensure that the flow measuring trolley 300 cannot tip over even when working on the guy cable 11 in a loose state, and the guy cable 11 below the mounting plate 34 is in a tightening state, so that the flow measuring trolley 300 still moves along the guy cable 11 in a straight state in a walking section, the movement precision is ensured, and meanwhile, the guy cable 11 can be limited between the upper roller 31 and the lower gear wheel, and the guy cable 11 is prevented from falling off when the flow measuring trolley 300 shakes. In addition, the combination of the cable 11 structure with a height difference and the corresponding roller assembly structure enables the cable 11 to be vertically sunk into the groove of the upper roller 31, thereby indirectly improving the moving precision of the flow measuring trolley 300. Particularly, on the basis of the structure, in the whole moving process of the flow measuring trolley 300, even though the stay cable 11 is loosened to generate sections such as an uphill slope or a downhill slope, the moving speed and the moving precision of the trolley are not influenced, the main reason is that two steel cables are matched with four groups of rollers to form a local rigid straight line, and the whole verticality is controlled by a tension numerical value, so that the technical defect that the traditional flow measuring trolley device is limited by geographical environments and auxiliary equipment is overcome.

Regarding the structure of the driving wheel stopper, the driving wheel stopper exemplarily includes a tension wheel, a torsion spring, and a base. A groove matched with the size of the inhaul cable 11 is formed in the traveling surface of the driving wheel 33; the tension wheel and the torsion spring are fixed above the base and are arranged on the mounting plate 34 through the base; the tension pulley and the driving wheel 33 are positioned at two sides of the cable 11, and the cable 11 is abutted in the groove of the driving wheel 33 under the action of the rotating force of the torsion spring. The torsional spring is adopted, so that a certain elastic space is still maintained between the inhaul cable 11 and the driving wheel 33 on the premise of ensuring the tight fit of the inhaul cable and the driving wheel, and the flow measuring trolley 300 is convenient to rapidly disassemble and assemble. Unlike the structure of the conventional flow measuring trolley which adopts a fixing device locked on the cable 11 in order to prevent the flow measuring trolley from falling, in the invention, the lower catch wheel 32 and the driving wheel stopper are firstly loosened, the upper roller 31 is hung on the cable 11, and the cable 11 passes through the bottom of the driving wheel 33, so that the hanging is finished. And the positions of the four lower catch wheels 32 are adjusted to ensure that the two steel wire ropes are partially parallel and straight, and the rope straightening and drawing are automatically completed. And finally, tightening the driving wheel limiter. The use of the drive wheel 33 with a torsion spring has three advantages: firstly, the flow measuring trolley 300 can be adapted to pull ropes 11 with different sizes; secondly, an elastic space is reserved, and the flow measuring trolley 300 is quickly assembled and disassembled; thirdly, a larger pressure independent of gravity can be provided, so that under the condition that the trolley is light in weight, enough friction force can be provided, the friction force is also the driving force of the trolley, and the trolley can be moved faster, and good positioning accuracy can be obtained.

Even under the cable state of loosing, because when flow measurement dolly 300 charges all climb gradually to the electric pile 13 department that fills of cable 11 proximal end portion by cable 11 bottommost, cable 11 in the mounting panel 34 scope of flow measurement dolly 300 is the tensioning state again, ensures that flow measurement dolly 300 can keep very high walking precision all the time and remove along cable 11. Under the effect of the double gravity of the current measuring trolley 300 and the inhaul cable 11, when the current measuring trolley 300 is close to the charging pile 13, the inhaul cable 11 between the current measuring trolley 300 and the charging pile 13 can also be in a straight line shape, so that the trolley electrode and the charging pile electrode are ensured to be in the same straight line, and although the straight line is in an inclined shape, the charging butt joint between the current measuring trolley 300 and the charging pile 13 cannot be influenced. Therefore, the charging device of the embodiment can still be adapted to the flow measuring trolley 300 in the state of loose guy cable, and in addition, the charging device only needs to be installed at the position of the proximal end portion of the guy cable 11, so that the flow measuring system of the embodiment has no any additional requirement on the site environment at both banks of the river, and only needs to be capable of fixing the guy cable 11.

Although the invention has been described with reference to preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be determined by the appended claims.

Claims

1. A charging device for a current measuring trolley is characterized by comprising a charging pile, a charging end, a limiting mechanism and a controller;

2. The charging device for the current-measuring trolley as claimed in claim 1, wherein at least two elongated mounting grooves are formed in one side of the second electrode holder facing the first electrode holder, and trolley electrodes are fully paved in the elongated mounting grooves in a one-to-one correspondence manner;

3. The charging device for the current measuring trolley as claimed in claim 1, wherein at least four vertical through holes are distributed at each end of the base, the vertical through holes are symmetrically arranged at two sides of the stay cable, and the charging pile fixing screws penetrate through the vertical through holes to fix the stay cable in the horizontal through holes.

4. The charging device for the flow measuring trolley according to claim 1, wherein the second electrode holder is fixed at the tail end of the flow measuring trolley through a position adjusting mechanism;

5. The charging device for the current measuring trolley as claimed in claim 1, wherein the connecting block is wedge-shaped, so that the charging pile electrode surface and the trolley electrode surface are vertically arranged and form a second included angle with the cable plane, and the second included angle is the same as the first included angle.

6. The charging device for a lateral flow trolley according to claim 1, wherein the safety distance is greater than the difference between the free length and the compression limit length of the elastic mechanism.

7. The charging device for the current measuring trolley according to claim 1, wherein the elastic mechanism comprises a spring, a charging pile connecting plate, a position adjusting screw and a spring pile;

the charging pile connecting plate is provided with a plurality of through holes in a distributed manner, the first electrode seat is fixedly connected to one side of the charging pile connecting plate, and the position adjusting screws penetrate through partial through holes in the charging pile connecting plate to enable the spring piles to be connected to the other side of the charging pile connecting plate; the spring is connected between the spring pile and the first mounting plate.

8. A charging method for a flow-measuring trolley, characterized in that the charging method is implemented on the basis of the charging device of any one of claims 1-7, and comprises the following steps:

s5, stopping moving the flow measuring trolley, cutting off the servo motor, enabling the flow measuring trolley to be self-locked at the current position, enabling the charging pile electrode to abut against the trolley electrode under the action of the elastic mechanism in the compressed state, and enabling the distance between the first mounting plate and the base to be larger than the safety distance.