Pod and hydrometric cableway flow measuring device

Abstract

The utility model provides a pod and hydrological cableway flow measuring device, and relates to the technical field of hydrological cableway testing, the pod and hydrological cableway flow measuring device comprises a pod upper frame, a lifting mechanism, an equipment box, a sensor for detection and a guiding device, the equipment box is connected below the pod upper frame through the lifting mechanism, and the equipment box is fixedly connected with a sensor connecting rod extending downwards; the detection sensor is fixedly mounted on the sensor connecting rod; a pod controller and a pod power supply module are mounted in the equipment box, and the detection sensor is electrically connected with the pod controller and the pod power supply module; the guide device comprises a guide frame and a floating body, and the upper end of the guide frame is rotatably mounted on the sensor connecting rod, so that the guide frame can swing relative to the sensor connecting rod; the floating body is rotationally or fixedly connected to the lower end of the guide frame. The technical problems that in the prior art, a hydrological cableway flow measuring device is poor in guiding capacity or prone to being hung by foreign matter, and a pod is poor in wind resistance, shock resistance and twisting resistance are solved.

Description

Technical Field

[0001] This utility model relates to the field of hydrological cableway testing technology, and in particular to a gondola and hydrological cableway flow measurement device. Background Technology

[0002] A lead weight for hydrological cableway testing is a hydrological testing instrument made of metallic lead or a lead-iron mixture, possessing a certain weight and a streamlined shape with a slender ratio. Common sizes include 8kg, 15kg, 30kg, 50kg, 75kg, 100kg, 150kg, and 200kg. Currently, river flow measurement commonly uses a cableway to place the lead weight and current meter at the appropriate location in the river channel according to hydrological testing specifications. The weight of the lead weight keeps the current meter from deviating from its cross-sectional position, and the fins of the lead weight act as a guide. This measurement method has the following problems:

[0003] First, although the current hydrological cableway lead weights and testing instruments are controlled by motors for ascending and descending, the assembly, transportation, and testing processes still require manual labor, increasing the workload of hydrological workers. Second, the low level of automation in existing technologies prevents 24-hour monitoring and testing, resulting in a significant waste of manpower. Finally, the long preparation time reduces work efficiency.

[0004] To alleviate the above problems, existing technologies have developed some measuring devices. For example, the patent "A Hydrological Cableway Cabin Device" (application number 202320735459.0) uses a device pod fixed on the cableway to achieve unattended automatic measurement of fixed measuring points on the measurement cross-section. The patent "An Automatic Control Device for Hydrological Cableway Flow Measurement" (application number 202320562649.7) combines a device pod with an intelligent trolley, which can automatically / manually deploy the device pod at a preset position on the cableway using the trolley. The device pod automatically completes the measurement task at the preset measuring point. At the same time, the trolley can also tow the device pod to the maintenance area for convenient maintenance, repair, and upkeep, avoiding water-based operations.

[0005] The two patents mentioned above solved the problem of unattended automatic measurement of cableways, reduced the workload of hydrological workers, and improved work efficiency, but some shortcomings still exist, mainly in the following aspects:

[0006] Existing pods lack guiding devices; or they have fin-shaped guiding devices, but while these devices provide some guidance when entering the water, their guiding effect is limited when the fin-shaped guiding device is small, and it is easy for foreign objects to get caught when it is large. At the same time, after the flow measurement stops, the pod will drive the sensor out of the water, and the guiding device will also be above the water surface. This will affect the pod's resistance to wind, earthquakes, and torsion. Utility Model Content

[0007] The purpose of this invention is to provide a gondola and hydrological cableway flow measurement device to alleviate the above-mentioned technical problems.

[0008] To achieve the above objectives, the embodiments of this utility model adopt the following technical solutions:

[0009] In a first aspect, this utility model provides a pod for use in a hydrological cableway flow measurement device, comprising a pod upper frame, a lifting mechanism, an equipment box, and a detection sensor; the equipment box is connected to the lower part of the pod upper frame via the lifting mechanism, and a downwardly extending sensor connecting rod is fixedly connected to the equipment box; the detection sensor is fixedly installed on the sensor connecting rod; a pod controller and a pod power supply module are installed inside the equipment box, and the detection sensor is electrically connected to the pod controller and the pod power supply module;

[0010] In particular, the pod provided by this utility model also includes a guiding device;

[0011] The guiding device includes a guide frame and a float. The upper end of the guide frame is rotatably mounted on the sensor connecting rod so that the guide frame can swing relative to the sensor connecting rod. The float is rotatably or fixedly connected to the lower end of the guide frame.

[0012] In an optional embodiment, the float is an integral structure; or, the float is a draggable structure, the draggable structure including a main float connected to the guide frame and at least one sub-float connected to the main float via a pull line.

[0013] In an optional embodiment, the lifting mechanism includes a winding device, a lifting cable, and pulleys one, two, three, and four.

[0014] The winding device is fixed to the top of the equipment box; pulley one and pulley two are fixed to the upper frame of the pod, and pulley three and pulley four are fixed to the equipment box along the equipment box; one end of the lifting cable is connected to the output end of the winding device, and the lifting cable passes around pulley one, pulley three, pulley four and pulley two, and the other end of the lifting cable is fixedly connected to the equipment box;

[0015] The winding device is capable of winding or releasing the lifting cable to lift or lower the equipment box relative to the upper frame of the pod.

[0016] In an optional embodiment, the detection sensor includes at least one of a flow sensor, a water depth sensor, an influent sensor, a water quality sensor, and a sand content sensor.

[0017] In an optional embodiment, the sensor connecting rod is provided with a transverse through hole, a bearing is installed inside the transverse through hole, and a sleeve is sleeved and fixedly connected to the upper end of the guide frame, the sleeve passing through and rotatably mounted on the bearing.

[0018] In an optional embodiment, the device housing is also equipped with a positioning module capable of communicating with the outside.

[0019] Secondly, this utility model provides a hydrological cableway flow measurement device, including a cableway and a pod as described in any of the foregoing embodiments;

[0020] The upper frame of the gondola is provided with three parallel cableway through holes, and the extension direction of the cableway through holes is perpendicular to the swing direction of the guide frame relative to the sensor connecting rod. The cableway through hole located in the middle of the three cableway through holes is the main cableway through hole. A grooved wheel is rotatably installed on the top of the upper frame of the gondola, and the wheel surface of the grooved wheel is connected to the main cableway through hole.

[0021] The cableway includes a main cable and a circulating cable. The main cable passes through the main cableway through-hole, and the grooved wheel is pressed against the top of the main cable. The circulating cable passes through a cableway through-hole located on one side of the main cableway through-hole in the forward direction and through a cableway through-hole located on the other side of the main cableway through-hole in the reverse direction.

[0022] The upper frame of the gondola is also provided with an electrically controlled locking structure corresponding to each of the cableway through holes. The electrically controlled locking structure is connected to the gondola controller and is used to hold or release the cableway cable passing through the corresponding cableway through hole.

[0023] In an optional embodiment, the pod is provided with at least one.

[0024] In an optional embodiment, in each of the gondolas: at least two grooved wheels are provided at intervals along the extension direction of the main cableway through-hole.

[0025] In an optional implementation, in each of the gondolas: a sleeve is fixed inside each of the cableway through holes on the upper frame of the gondola, and the corresponding cable passes through the corresponding sleeve.

[0026] Compared with the prior art, the pod and hydrological cableway flow measurement device provided in this embodiment can produce at least the following beneficial effects:

[0027] (1) Compared with the existing technology where the pod uses a fin-shaped guide plate as a guiding device, where the guide plate is too small and the guiding effect is poor, and the guide plate is too large and it is easy to snag foreign objects, the pod in this embodiment uses the above-mentioned guide frame and float to form the guiding device of the pod. The shape and size of the float can be arbitrarily designed to achieve a better guiding effect. At the same time, the float is usually designed as a spherical or ellipsoidal shape, which can effectively avoid snagping foreign objects.

[0028] (2) Compared with the prior art, when the sensor leaves the water, the guide device of the pod also leaves the water. In windy weather, this may cause the pod to vibrate and swing, resulting in excessive stress on the cableway and tower, which is easy to damage. In this embodiment, the float of the guide device does not leave the water during detection and between detection intervals, thus the wind and earthquake resistance effect is obvious.

[0029] (3) The pod in this embodiment uses a float for guidance, which can adapt well to the direction of the river (one-way or two-way flow channel). Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0031] Figure 1 The front view of the installation structure of the hydrological cableway flow measuring device provided in this embodiment of the invention (with the direction perpendicular to the paper being the direction of water flow) is shown with the direction of water flow as the front-back direction.

[0032] Figure 2 for Figure 1 A side view of the pod shown;

[0033] Figure 3 for Figure 2 The diagram shows a front view of the assembly structure of the guide device and equipment box in the pod (the direction perpendicular to the paper is the direction of water flow).

[0034] Icons: 100-Pod; 1-Pod upper frame; 11-Groove wheel; 12-Electrically controlled locking structure; 21-Rewinding device; 22-Lifting cable; 23-Pulley one; 24-Pulley two; 25-Pulley three; 26-Pulley four; 3-Equipment box; 4-Sensor connecting rod; 5-Detection sensor; 6-Guiding device; 61-Guiding frame; 62-Float; 7-Tower; 8-Main cable; 9-Circulating cable. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] It should be noted that similar labels and letters in the accompanying drawings indicate similar items. Therefore, once an item is defined in one accompanying drawing, it does not need to be further defined and explained in subsequent accompanying drawings.

[0038] In the description of this utility model, it should be noted that the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0039] Furthermore, the terms "horizontal" and "vertical" do not imply that the component must be absolutely horizontal or suspended, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0040] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0042] Example 1

[0043] This embodiment provides a pod for a hydrological cableway flow measurement device, referring to... Figure 2 and Figure 3 The pod 100 includes a pod upper frame 1, a lifting mechanism, an equipment box 3, a detection sensor 5, and a guiding device 6. The equipment box 3 is connected to the lower part of the pod upper frame 1 via the lifting mechanism, and a downwardly extending sensor connecting rod 4 is fixedly connected to the equipment box 3. The detection sensor 5 is fixedly installed on the sensor connecting rod 4. The equipment box 3 houses a pod controller and a pod power supply module, and the detection sensor 5 is electrically connected to the pod controller and the pod power supply module. In particular, the guiding device 6 includes a guide frame 61 and a float 62. The upper end of the guide frame 61 is rotatably mounted on the sensor connecting rod 4 so that the guide frame 61 can swing relative to the sensor connecting rod 4. The float 62 is rotatably or fixedly connected to the lower end of the guide frame 61.

[0044] When using it, you can refer to Figure 1 A cableway is installed between the two towers 7. The upper frame 1 of the gondola 100 is installed on the main cable and the circulating cable of the cableway (the upper frame 1 of the gondola is rotatably mounted with a grooved wheel 11 to abut against the upper part of the main cable). The circulating cable drives the upper frame 1 of the gondola to move along the main cable to move the gondola 100 to the predetermined position. After the gondola 100 reaches the predetermined position, the upper frame 1 of the gondola is locked to the main cable. Then, the lifting mechanism is started, and the equipment box 3 is lowered under the driving action of the lifting mechanism until its detection sensor 5 extends below the water surface and reaches the preset water depth. The hydrological data is detected by the detection sensor 5, and the detection information is stored and sent to the website terminal system for staff to retrieve through the gondola controller. Specifically, during the above-mentioned testing process, the guide frame 61 of the guide device 6 swings downstream along the direction of the water flow under the drive of the float 62. The projection of the guide frame 61 on the water surface is basically parallel to the direction of the water flow, thus playing a guiding role. During the interval between multiple tests, the lifting mechanism control equipment box 3 rises to the test position. Under its own weight, the guide frame 61 of the guide device 6 is roughly perpendicular to the water surface, but the float 62 of the guide device 6 remains at least partially in contact with the water surface to prevent the pod from vibrating.

[0045] Compared with the prior art, the pod 100 for hydrological cableway flow measurement devices provided in this embodiment can produce at least the following beneficial effects:

[0046] (1) Compared with the prior art where the pod uses a fin-shaped guide plate as a guiding device, where the guide plate is too small and the guiding effect is poor, and the guide plate is too large and it is easy to snag foreign objects, the pod 100 of this embodiment uses the above-mentioned guide frame 61 and float 62 to form the guiding device 6 of the pod 100. The shape and size of the float 62 can be arbitrarily designed to achieve a better guiding effect. At the same time, the float 62 is usually designed as a spherical or ellipsoidal shape, which can effectively avoid snagping foreign objects.

[0047] (2) Compared with the prior art, when the pod leaves the water surface after the sensor leaves the water surface, its guiding device also leaves the water surface. In windy weather, this may cause the pod to vibrate and swing, resulting in excessive stress on the cableway and tower, which is easy to damage. In this embodiment, the buoy 62 of the guiding device 6 does not leave the water surface during the detection and detection intervals of the pod 100, thus the wind and earthquake resistance effect is obvious.

[0048] (3) The pod 100 in this embodiment is guided by the float 62, which can adapt well to the river direction (one-way or two-way flow channel).

[0049] For a more detailed description of the structure of the pod 100, please refer to [link / reference needed]. Figure 2 and Figure 3 The aforementioned float 62 is an integral structure; or, the aforementioned float 62 is a draggable structure. When it is a draggable structure, it specifically includes a main float connected to the guide frame 61 and at least one sub-float connected to the main float via a pull line.

[0050] The above-mentioned lifting mechanism has a variety of optional mechanism types, including but not limited to:

[0051] like Figure 2As shown, the lifting mechanism includes a winding device 21, a lifting cable 22, and pulleys 23, 24, 25, and 26. The winding device 21 is fixed to the top of the equipment box 3; pulleys 23 and 24 are fixed to the upper frame 1 of the pod, and pulleys 25 and 26 are fixed along the equipment box 3; one end of the lifting cable 22 is connected to the output end of the winding device 21, and the lifting cable 22 passes over pulleys 23, 25, 26, and 24, while the other end of the lifting cable 22 is fixedly connected to the equipment box 3. The winding device 21 can wind or release the lifting cable 22 to lift or lower the equipment box 3 relative to the upper frame 1 of the pod. The winding device 21 can be, but is not limited to, an electric winch with a braking function, or a combination mechanism of a motor and drum with a braking function; the lifting cable 22 is preferably, but not limited to, a steel cable, and more preferably, but not limited to, a multi-strand braided steel cable to ensure structural stability. Those skilled in the art should note that the precise position of each pulley in this optional embodiment needs to be specifically designed with reference to the center of gravity of the equipment box 3, with the design standard being that the equipment box 3 rises and falls as smoothly as possible. Since this position is related to the size of the equipment box 3 and the weight of the aforementioned components, this application does not impose specific limitations.

[0052] In an optional embodiment of this example, the detection sensor 5 can be at least one of a flow sensor, a water depth sensor, an influent sensor, a water quality sensor, and a sand content sensor. Only one type of sensor can be installed (the specific number of installations can be one or more), or two or more different types of sensors can be installed simultaneously as needed.

[0053] In an optional embodiment of this example, a transverse through hole is provided on the sensor connecting rod 4, and a bearing is installed inside the transverse through hole. A sleeve is fitted and fixedly connected to the upper end of the guide frame 61, and the sleeve passes through and is rotatably installed on the aforementioned bearing.

[0054] Optionally, a positioning module capable of communicating with the outside is also installed inside the equipment box 3. This positioning module can be, but is not limited to, a GPS positioning module or a satellite positioning module, to more accurately control the specific position of the upper frame of the pod along the cableway, reduce the positioning error of the detection position, and improve the detection results.

[0055] Example 2

[0056] This embodiment provides a hydrological cableway flow measurement device, referring to... Figure 1 The hydrological cableway flow measurement device includes a cableway and a pod 100 provided in any of the optional embodiments in Example 1.

[0057] The upper frame 1 of the gondola has three parallel cableway through holes, and the extension direction of the cableway through holes is perpendicular to the swing direction of the guide frame 61 relative to the sensor connecting rod 4. The cableway through hole located in the middle of the three cableway through holes is the main cableway through hole. A grooved wheel 11 is rotatably installed on the top of the upper frame 1 of the gondola, and the wheel surface of the grooved wheel 11 is connected to the main cableway through hole. The cableway includes a main cable 8 and a circulating cable 9. The main cable 8 passes through the main cableway through hole, and the grooved wheel 11 is pressed against the top of the main cable 8. The circulating cable 9 passes through a cableway through hole located on one side of the main cableway through hole in the forward direction and passes through a cableway through hole located on the other side of the main cableway through hole in the reverse direction. The upper frame 1 of the gondola is also equipped with an electrically controlled locking structure 12 corresponding to each cableway through-hole. The electrically controlled locking structure 12 is connected to the gondola controller and is used to grip or release the cable passing through the corresponding cableway through-hole. There are various optional structures for the electrically controlled locking structure 12, including but not limited to electromagnetic locks or hydraulic-electromagnetic composite locks, which can automatically lock and unlock upon receiving signals. Its usage is described in Embodiment 1.

[0058] At least one pod 100 is provided. To increase the accuracy of river hydrological test results, multiple pods 100 are further provided to conduct tests on multiple cross-sectional areas separately. For example... Figure 1 The diagram shows three gondolas 100, which are used to detect hydrological data in three river sections D1, D2, and D3 respectively. Furthermore, the circulation cable 9 works in conjunction with the main cable 8 to control the movement of multiple gondolas 100 simultaneously, which greatly improves work efficiency.

[0059] To improve the stability of each gondola 100 moving on the cableway, in an optional embodiment of this invention, each gondola 100 has at least two grooved wheels 11 spaced apart along the extension direction of the main cableway through-hole. Optionally, sleeves are fixed one-to-one inside each cableway through-hole of the gondola upper frame 1, and the corresponding cableways pass through the corresponding sleeves, thereby increasing the smoothness of sliding, reducing wear, and improving operational reliability.

[0060] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to mutually. The above embodiments in this specification are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A pod for use in a hydrological cableway flow measurement device, comprising a pod upper frame (1), a lifting mechanism, an equipment box (3), and a detection sensor (5); the equipment box (3) is connected to the lower part of the pod upper frame (1) via the lifting mechanism, and a downwardly extending sensor connecting rod (4) is fixedly connected to the equipment box (3); the detection sensor (5) is fixedly installed on the sensor connecting rod (4); a pod controller and a pod power supply module are installed inside the equipment box (3), and the detection sensor (5) is electrically connected to the pod controller and the pod power supply module; Its features are: The pod also includes a guide device (6); The guiding device (6) includes a guide frame (61) and a float (62). The upper end of the guide frame (61) is rotatably mounted on the sensor connecting rod (4) so ​​that the guide frame (61) can swing relative to the sensor connecting rod (4). The float (62) is rotatably or fixedly connected to the lower end of the guide frame (61).

2. The pod according to claim 1, characterized in that: The float (62) is an integral structure; or the float (62) is a draggable structure, which includes a main float connected to the guide frame (61) and at least one sub-float connected to the main float by a pull line.

3. The pod according to claim 1, characterized in that: The lifting mechanism includes a winding device (21), a lifting cable (22), and pulleys one (23), two (24), three (25), and four (26); The winding device (21) is fixed to the top of the equipment box (3); the pulley one (23) and the pulley two (24) are fixed to the upper frame (1) of the pod, and the pulley three (25) and the pulley four (26) are fixed to the equipment box (3) along the equipment box (3); one end of the lifting cable (22) is connected to the output end of the winding device (21), and the lifting cable (22) passes around the pulley one (23), the pulley three (25), the pulley four (26) and the pulley two (24), and the other end of the lifting cable (22) is fixedly connected to the equipment box (3); The winding device (21) is capable of winding or releasing the lifting cable (22) to lift or lower the equipment box (3) relative to the upper frame (1) of the pod.

4. The pod according to claim 1, characterized in that: The detection sensor (5) includes at least one of a flow sensor, a water depth sensor, an inlet water sensor, a water quality sensor, and a sand content sensor.

5. The pod according to claim 1, characterized in that: The sensor connecting rod (4) has a transverse through hole, and a bearing is installed inside the transverse through hole. A sleeve is fitted and fixedly connected to the upper end of the guide frame (61), and the sleeve passes through and is rotatably installed on the bearing.

6. The pod according to claim 1, characterized in that: The device box (3) is also equipped with a positioning module that can communicate with the outside.

7. A hydrological cableway flow measurement device, characterized in that: Includes cableway and pod (100) as described in any one of claims 1 to 6; The upper frame (1) of the gondola is provided with three parallel cableway through holes, and the extension direction of the cableway through holes is perpendicular to the swing direction of the guide frame (61) relative to the sensor connecting rod (4); the cableway through hole located in the middle of the three cableway through holes is the main cableway through hole, and a grooved wheel (11) is rotatably installed on the top of the upper frame (1), and the wheel surface of the grooved wheel (11) is connected to the main cableway through hole; The cableway includes a main cable (8) and a circulating cable (9). The main cable (8) passes through the main cableway through hole, and the grooved wheel (11) is pressed against the main cable (8). The circulating cable (9) passes through a cableway through hole located on one side of the main cableway through hole in the forward direction and passes through a cableway through hole located on the other side of the main cableway through hole in the reverse direction. The upper frame (1) of the gondola is also provided with an electrically controlled locking structure (12) corresponding to each of the cableway through holes. The electrically controlled locking structure (12) is connected to the gondola controller and is used to hold or release the cableway cable passing through the corresponding cableway through hole.

8. The hydrological cableway flow measuring device according to claim 7, characterized in that: The pod (100) is provided with at least one.

9. The hydrological cableway flow measuring device according to claim 7, characterized in that: In each of the aforementioned gondolas (100): at least two grooved wheels (11) are provided at intervals along the extension direction of the main cableway through hole.

10. The hydrological cableway flow measuring device according to claim 7, characterized in that: In each of the aforementioned gondolas (100): a sleeve is fixed inside each of the cableway through holes in the upper frame (1) of the gondola, and the corresponding cable passes through the corresponding sleeve.

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