阅读说明：本技术 一种遥感监测河湖水文水生态要素装置 (Device for remotely sensing and monitoring ecological elements of river and lake water and cultural water ) 是由 张小华 谢加球 冉启蓉 张泽 许朝会 蒋昌学 于 2021-06-30 设计创作，主要内容包括：本发明提供了一种遥感监测河湖水文水生态要素装置,其结构包括主体、检测机构、固定座、显示座、数显面板,检测机构上端外壁嵌套卡合于主体内壁,固定座上端外壁嵌固卡合于主体下端外壁,显示座下端通过螺钉固定于主体上端外壁,数显面板外壁嵌套卡合于显示座内壁,本发明在装配于水源的内部并启动进行使用时,水流的流动可带动叶片进行旋转,并通过叶片的旋转而增加流通设备的水流的流速,降低水流中杂质残留于设备的可能,而在设备堵塞后,水流的推动力可推动转动机构向后进行移动,并在移动过程中,令转动机构开启,通过转动机构的开启而增加水流通过的范围,使杂质可通过设备,解决设备被杂质所堵塞。(The invention provides a device for remotely sensing and monitoring ecological factors of river and lake hydrology water, which comprises a main body, a detection mechanism, a fixed seat, a display seat and a digital display panel, wherein the outer wall of the upper end of the detection mechanism is embedded and clamped on the inner wall of the main body, the outer wall of the upper end of the fixed seat is embedded and clamped on the outer wall of the lower end of the main body, the lower end of the display seat is fixed on the outer wall of the upper end of the main body through a screw, and the outer wall of the digital display panel is embedded and clamped on the inner wall of the display seat. Impurities can pass through the equipment, and the problem that the equipment is blocked by the impurities is solved.)

1. The device for remotely sensing and monitoring the ecological elements of the river and lake hydrology water structurally comprises a main body (1), a detection mechanism (2), a fixed seat (3), a display seat (4) and a digital display panel (5), wherein the outer wall of the upper end of the detection mechanism (2) is embedded and clamped on the inner wall of the main body (1), the outer wall of the upper end of the fixed seat (3) is embedded and clamped on the outer wall of the lower end of the main body (1), the lower end of the display seat (4) is fixed on the outer wall of the upper end of the main body (1) through screws, and the outer wall of the digital display panel (5) is embedded and clamped on the inner wall of the display seat (4), and is characterized in that;

detection mechanism (2) comprise slewing mechanism (21), blade (22), support ring (23), slewing mechanism (21) rear end outer wall laminating is fixed in slewing mechanism (21) front end outer wall, blade (22) outer wall activity joint in slewing mechanism (21) inner wall, support ring (23) outer wall activity cooperation is in main part (1) inner wall.

2. The device for remotely sensing and monitoring ecological elements of river and lake water and cultural water according to claim 1, is characterized in that: slewing mechanism (21) comprise holding ring (a 1), dredge (a 2), expansion ring (a 3), the block is inlayed in dredge (a 2) outer wall to holding ring (a 1) upper end outer wall, the laminating of expansion ring (a 3) rear end outer wall is fixed in holding ring (a 1) front end outer wall, dredge (a 2) outer wall nested fit is in main part (1) inner wall.

3. The device for remotely sensing and monitoring ecological elements of river and lake water and cultural water according to claim 2, is characterized in that: the dredger (a 2) comprises a shell (b 1), an opening and closing device (b 2), a rotating mechanism (b 3), a sliding block (b 4) and a guide seat (b 5), wherein the inner wall of the shell (b 1) is nested and clamped on the outer wall of the opening and closing device (b 2), the inner wall of the opening and closing device (b 2) is movably matched with the outer wall of the guide seat (b 5), the outer wall of the lower end of the rotating mechanism (b 3) is welded and fixed on the outer wall of the guide seat (b 5), the outer wall of the sliding block (b 4) is nested and clamped on the inner wall of the opening and closing device (b 2), and the outer wall of the guide seat (b 5) is movably matched with the inner wall of the shell (b 1).

4. The device for remotely sensing and monitoring ecological elements of river and lake water and cultural water according to claim 3, is characterized in that: the rotating mechanism (b 3) is composed of a twister (c 1), a limiting block (c 2) and an assembling block (c 3), the outer wall of the twister (c 1) is in nested fit with the inner wall of the assembling block (c 3), the outer wall of the right side of the limiting block (c 2) is in movable fit with the outer walls of the two ends of the assembling block (c 3), and the lower end of the assembling block (c 3) is fixedly embedded in the outer wall of the guide seat (b 5).

5. The device for remotely sensing and monitoring ecological elements of river and lake water and cultural water according to claim 4, is characterized in that: twister (c 1) is by twisting ring (d 1), connecting rod (d 2), screens piece (d 3), reset strip (d 4), locating lever (d 5) and constitutes, twist ring (d 1) outer wall nested fit assembly piece (c 3) inner wall, connecting rod (d 2) left side outer wall welded connection is in screens piece (d 3) both ends outer wall, screens piece (d 3) outer wall nested fit twists ring (d 1) both ends inner wall, reset strip (d 4) both ends inner wall nested block in locating lever (d 5) outer wall, locating lever (d 5) front and back both ends outer wall welded fastening is in twisting ring (d 1) inner wall.

6. The device for remotely sensing and monitoring ecological elements of river and lake water and cultural water according to claim 3, is characterized in that: the opening and closing device (b 2) is composed of an expansion mechanism (e 1), a ring block (e 2) and an arc connecting rod (e 3), wherein the outer wall of the expansion mechanism (e 1) is nested and clamped on the inner wall of the ring block (e 2), the inner wall of the ring block (e 2) is nested and matched with the outer wall of the arc connecting rod (e 3), and the outer wall of the arc connecting rod (e 3) is movably matched with the inner wall of a shell (b 1).

7. The device for remotely sensing and monitoring ecological elements of river and lake water and cultural water according to claim 6, is characterized in that: the expansion mechanism (e 1) comprises an expander (f 1), a guide block (f 2), a moving rod (f 3), a connecting seat (f 4) and a stretching strip (f 5), wherein the outer wall of the expander (f 1) is nested and matched with the inner wall of a ring block (e 2), the outer wall of the right side of the guide block (f 2) is fitted and matched with the outer walls of the two ends of the expander (f 1), the outer wall of the right side of the moving rod (f 3) is welded and connected with the outer walls of the two ends of the guide block (f 2), the upper end of the connecting seat (f 4) is fixedly clamped on the outer wall of the lower end of the guide block (f 2), and the outer wall of the left side of the stretching strip (f 5) is clamped and connected between the connecting seat (f 4).

8. The device for remotely sensing and monitoring ecological elements of river and lake water and cultural water according to claim 7, is characterized in that: the expander (f 1) comprises a moving ring (g 1), a positioning rod (g 2), a piston (g 3), a filling groove (g 4) and a sealing block (g 5), wherein the outer walls of two ends of the moving ring (g 1) are movably matched between guide blocks (f 2), the outer wall of the positioning rod (g 2) is in nested fit with the inner wall of the sealing block (g 5), the lower end of the piston (g 3) is fixedly embedded and clamped on the outer walls of two ends of the positioning rod (g 2), the filling groove (g 4) and the moving ring (g 1) are of an integrated structure, and the outer wall of the sealing block (g 5) is fixedly embedded and clamped on the inner wall of the lower end of the moving ring (g 1).

Technical Field

The invention relates to the field of river and lake hydrology monitoring, in particular to a device for remotely monitoring ecological elements of river and lake hydrology water.

Background

The hydrological water ecological element is a main factor forming the hydrological situation and the ecological conditions of rivers and lakes in a certain place or area at a certain time, is a main physical quantity for describing the hydrological situation, and is scientifically monitored and calculated to know and record various indexes of the water levels, the flow rates and the like of the rivers and lakes, so that the position of a dike which can be broken in a flood season is calculated and the protection is carried out in advance, and the state of the water ecology inside the rivers and lakes can be known, so that the problem inside the water ecology of the rivers and lakes can be quickly found out in the subsequent regulation and protection of the water ecology inside the rivers and lakes, but when the hydrological water ecology of the rivers and lakes is monitored, in order to solve the workload required in the manual monitoring, a remote sensing monitoring device for the hydrological ecological elements of the rivers and lakes is usually adopted in the prior art and is used for remotely monitoring various indexes inside the rivers and lakes, but under the condition of the prior industrial development, rubbish and plastic bag that the aquatic exists etc. can lead to the fact the influence to monitoring devices to originally impurity etc. that exist in the aquatic drives the parallel flow by rivers and passes through monitoring devices after, have the part to squeeze juice and remain to monitoring devices and be used for carrying out the position of gathering to the water source, can cause the jam at water source collection position under long-term use, can't carry out real-time measuring to river lake water, and appear blocking problem just can't be quick when flood season and clear up the maintenance to detection device.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides a device for remotely sensing and monitoring ecological elements of river, lake and water, which solves the problems that under the condition of the existing industrial development, garbage, plastic bags and the like in water can affect a monitoring device, impurities and the like which exist in water are driven by water flow to flow through the monitoring device, part of squeezed juice is remained to a part of the monitoring device for collecting a water source, the part of the water source is blocked by the monitoring device, real-time detection on the river, lake and water cannot be carried out, and the detection device cannot be quickly cleaned and maintained due to the blockage problem in the flood season.

Aiming at the above purpose, the invention is realized by the following technical scheme: the device for remotely sensing and monitoring the ecological elements of the hydrological water in the river and lake structurally comprises a main body, a detection mechanism, a fixed seat, a display seat and a digital display panel, wherein the outer wall of the upper end of the detection mechanism is embedded and clamped on the inner wall of the main body;

the detection mechanism comprises slewing mechanism, blade, support ring, slewing mechanism rear end outer wall laminating is fixed in slewing mechanism front end outer wall, blade outer wall activity joint is in the slewing mechanism inner wall, support ring outer wall activity cooperation is in the main part inner wall, the blade is equipped with threely altogether, and the annular is arranged in the slewing mechanism inner wall.

Preferably, the rotating mechanism comprises positioning rings, a dredger and expansion rings, the outer wall of the upper end of each positioning ring is fixedly embedded and clamped on the outer wall of the dredger, the outer wall of the rear end of each expansion ring is fixedly attached to the outer wall of the front end of each positioning ring, the outer walls of the dredgers are in nested fit with the inner wall of the main body, and the three positioning rings are annularly arranged on the outer wall of the dredger.

Preferably, the dredger comprises a shell, an opening and closing device, a rotating mechanism, sliding blocks and guide seats, wherein the inner wall of the shell is nested and clamped on the outer wall of the opening and closing device, the inner wall of the opening and closing device is movably matched with the outer wall of the guide seat, the outer wall of the lower end of the rotating mechanism is welded and fixed on the outer wall of the guide seat, the outer wall of the sliding block is nested and clamped on the inner wall of the opening and closing device, the outer wall of the guide seat is movably matched with the inner wall of the shell, the number of the guide seats is three, and the combined structure is a circular structure.

Preferably, the rotating mechanism comprises a twister, a limiting block and an assembly block, wherein the outer wall of the twister is nested and matched with the inner wall of the assembly block, the outer wall of the right side of the limiting block is movably matched with the outer walls of the two ends of the assembly block, and the lower end of the assembly block is fixedly embedded in the outer wall of the guide seat.

Preferably, the twister comprises a twisting ring, a connecting rod, a clamping block, two resetting strips and a positioning rod, wherein the outer wall of the twisting ring is nested and matched with the inner wall of the assembly block, the outer wall of the left side of the connecting rod is welded and connected to the outer walls of the two ends of the clamping block, the outer wall of the clamping block is nested and matched with the inner walls of the two ends of the twisting ring, the inner walls of the two ends of the resetting strips are nested and clamped on the outer wall of the positioning rod, the outer walls of the front end and the rear end of the positioning rod are welded and fixed to the inner wall of the twisting ring, and the two resetting strips are arranged in a mirror image mode and arranged on the inner walls of the upper end and the lower end of the twisting ring.

Preferably, the opening and closing device comprises an expansion mechanism, a ring block and an arc connecting rod, wherein the outer wall of the expansion mechanism is nested and clamped on the inner wall of the ring block, the inner wall of the ring block is nested and matched with the outer wall of the arc connecting rod, and the outer wall of the arc connecting rod is movably matched with the inner wall of the shell.

Preferably, the expanding mechanism comprises an expander, guide blocks, moving rods, connecting seats and stretching strips, wherein the outer wall of the expander is nested and matched with the inner wall of the ring block, the outer wall of the right side of the guide block is fitted and matched with the outer walls of the two ends of the expander, the outer wall of the right side of the moving rod is welded and connected with the outer walls of the two ends of the guide block, the upper end of each connecting seat is fixedly embedded and clamped on the outer wall of the lower end of the guide block, the outer wall of the left side of each stretching strip is clamped and connected between the connecting seats, and the two guide blocks are arranged on the outer walls of the two ends of the expander in a mirror image mode.

Preferably, the expander comprises a moving ring, a positioning rod, a piston, a filling groove and a sealing block, wherein the outer walls of two ends of the moving ring are movably matched between the guide blocks, the outer wall of the positioning rod is in nested fit with the inner wall of the sealing block, the lower end of the piston is fixedly clamped on the outer walls above the two ends of the positioning rod, the filling groove and the moving ring are of an integrated structure, the outer wall of the sealing block is fixedly clamped on the inner wall of the lower end of the moving ring, and the inner wall of the filling groove is filled with hydraulic oil.

Advantageous effects

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

when the water source is assembled in a water source and started for use, the flow of water flow can drive the blades to rotate, the flow rate of the water flow of the circulating equipment is increased through the rotation of the blades, the possibility that impurities in the water flow are remained in the equipment is reduced, after the equipment is blocked, the driving force of the water flow can drive the rotating mechanism to move backwards, the rotating mechanism is started in the moving process, the passing range of the water flow is increased through the starting of the rotating mechanism, the impurities can pass through the equipment, and the problem that the equipment is blocked by the impurities is solved.

Drawings

FIG. 1 is a schematic structural diagram of the device for remotely sensing and monitoring ecological elements of river and lake water and cultural water.

Fig. 2 is a schematic top view of the detecting mechanism of the present invention.

Fig. 3 is a schematic structural diagram of the rotating mechanism of the invention.

Fig. 4 is a schematic sectional structure diagram of the dredger of the invention.

Fig. 5 is a schematic structural view of the rotating mechanism of the present invention.

Fig. 6 is a schematic sectional structure view of the inventive twister.

Fig. 7 is a schematic structural view of the opening and closing device of the present invention.

Fig. 8 is a schematic cross-sectional view of the inventive stent.

Fig. 9 is a schematic cross-sectional view of the inventive dilator.

In the figure: the device comprises a main body-1, a detection mechanism-2, a fixed seat-3, a display seat-4, a digital display panel-5, a rotating mechanism-21, a blade-22, a support ring-23, a positioning ring-a 1, a dredger-a 2, an expansion ring-a 3, a shell-b 1, an opening and closing device-b 2, a rotating mechanism-b 3, a sliding block-b 4, a guide seat-b 5, a twister-c 1, a limiting block-c 2, an assembly block-c 3, a twisting ring-d 1, a connecting rod-d 2, a clamping block-d 3, a reset bar-d 4, a positioning rod-d 5, an expansion mechanism-e 1, a ring block-e 2, an arc connecting rod-e 3, an expander-f 1, a guide block-f 2, a moving rod-f 3, a connecting seat-f 4, a stretching bar-f 5, a blade-22, a supporting ring-b-c-b 3, a U-b 3, a U-c, a U-b 3, Moving ring-g 1, positioning rod-g 2, piston-g 3, filling groove-g 4 and sealing block-g 5.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are some, not all embodiments of the present invention, and all other embodiments obtained by those skilled in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

Example 1

As shown in the accompanying drawings 1 to 6, the invention provides a device for remotely sensing and monitoring ecological elements of river, lake, water and water, which structurally comprises a main body 1, a detection mechanism 2, a fixed seat 3, a display seat 4 and a digital display panel 5, wherein the outer wall of the upper end of the detection mechanism 2 is embedded and clamped on the inner wall of the main body 1, the outer wall of the upper end of the fixed seat 3 is embedded and clamped on the outer wall of the lower end of the main body 1, the lower end of the display seat 4 is fixed on the outer wall of the upper end of the main body 1 through a screw, and the outer wall of the digital display panel 5 is embedded and clamped on the inner wall of the display seat 4;

the detection mechanism 2 is composed of a rotating mechanism 21, blades 22 and a support ring 23, the outer wall of the rear end of the rotating mechanism 21 is attached and fixed to the outer wall of the front end of the rotating mechanism 21, the outer wall of each blade 22 is movably clamped on the inner wall of the rotating mechanism 21, the outer wall of the support ring 23 is movably matched with the inner wall of the main body 1, the blades 22 are arranged in the rotating mechanism 21 in an annular mode, and the blades 22 arranged at the three ends can move synchronously after being driven by water flow so as to reduce the force required by rotation.

Wherein, slewing mechanism 21 comprises holding ring a1, dredge a2, expansion ring a3, holding ring a1 upper end outer wall is embedded and is fixed in dredge a2 outer wall, the laminating of expansion ring a3 rear end outer wall is fixed in holding ring a1 front end outer wall, dredge a2 outer wall nested fit is in main part 1 inner wall, holding ring a1 is equipped with three altogether, and the annular is arranged in dredge a2 outer wall, and holding ring a1 that the three-terminal was equipped with is after fixing, and its atress is the triangle-shaped structure to improve stability.

The dredger a2 comprises a shell b1, an opening and closing device b2, a rotating mechanism b3, a sliding block b4 and a guide seat b5, wherein the inner wall of the shell b1 is nested and clamped on the outer wall of the opening and closing device b2, the inner wall of the opening and closing device b2 is movably matched with the outer wall of the guide seat b5, the outer wall of the lower end of the rotating mechanism b3 is welded and fixed on the outer wall of the guide seat b5, the outer wall of the sliding block b4 is nested and clamped on the inner wall of the opening and closing device b2, the outer wall of the guide seat b5 is movably matched with the inner wall of the shell b1, the number of the guide seats b5 is three, the combined structure is a circular structure, and the guide seat b5 formed by combining the three ends can be freely opened and closed.

The rotating mechanism b3 is composed of a twister c1, a limiting block c2 and an assembling block c3, the outer wall of the twister c1 is nested and matched with the inner wall of the assembling block c3, the outer wall of the right side of the limiting block c2 is movably matched with the outer walls of two ends of the assembling block c3, and the lower end of the assembling block c3 is fixedly embedded in the outer wall of the guide seat b 5.

The twister c1 comprises a twisting ring d1, a connecting rod d2, a clamping block d3, a resetting strip d4 and a positioning rod d5, wherein the outer wall of the twisting ring d1 is nested and matched with the inner wall of the assembly block c3, the outer wall of the left side of the connecting rod d2 is welded and connected with the outer walls of the two ends of the clamping block d3, the outer wall of the clamping block d3 is nested and matched with the inner walls of the two ends of the twisting ring d1, the inner walls of the two ends of the resetting strip d4 are nested and clamped and matched with the outer wall of the positioning rod d5, the outer walls of the front end and the rear end of the positioning rod d5 are welded and fixed on the inner wall of the twisting ring d1, the two resetting strips d4 are arranged in a mirror image mode on the inner walls of the upper end and the lower end of the twisting ring d1, and the resetting strips d4 arranged at the upper end and the lower end can work together to quickly reset the twisting ring d 1.

The following examples are set forth: when the equipment needs to be used, the main body 1 of the equipment is positively aligned with water flow, and after the assembly and fixation are completed, the equipment can be started to work, when the water flow flows, the water flow can be directly contacted with the front end of the detection mechanism 2, and when the water flow flows, the driving force of the water flow is driven by the inclination angle of the blade 22 after contacting the blade 22 arranged in the detection mechanism 2, so that the water flow flows in a vortex shape to a certain degree and drives the blade 22 to rotate, the water flow is driven to rotate through the rotation of the blade 22, the magazines in a water source are limited through the centripetal force of the rotation of the water flow, the magazines cannot be adhered to the equipment, when the magazines are too much, the excessive magazines can cause the blockage of the rotating mechanism 21, and the water flow cannot exert the driving force on the rotating mechanism 21 through the rotating mechanism 21, so that the rotating mechanism 21 can move backwards after receiving the driving force, when the guide seat b5 moves backwards, the guide seat b5 moves to drive the sliding block b4 to trigger the opening and closing device b2, the guide seat b5 rotates to be opened due to the movement of the guide seat b2, the guide seat b5 rotates to be opened to act on the twister c1 through the assembling block c3, and two ends of the twisting ring d1 are subjected to different forces to rotate and twist so as to stretch the resetting strip d 4.

Example 2

As shown in fig. 7 to 9: the opening and closing device b2 is composed of an expansion mechanism e1, a ring block e2 and an arc connecting rod e3, the outer wall of the expansion mechanism e1 is nested and clamped on the inner wall of the ring block e2, the inner wall of the ring block e2 is nested and matched with the outer wall of the arc connecting rod e3, and the outer wall of the arc connecting rod e3 is movably matched with the inner wall of the shell b 1.

The expansion mechanism e1 comprises an expander f1, a guide block f2, a moving rod f3, a connecting seat f4 and a stretching strip f5, wherein the outer wall of the expander f1 is nested and matched with the inner wall of a ring block e2, the outer wall of the right side of the guide block f2 is in fit and matching with the outer walls of the two ends of the expander f1, the outer wall of the right side of the moving rod f3 is connected with the outer walls of the two ends of the guide block 2 in a welding mode, the upper end of the connecting seat f4 is fixedly clamped and clamped with the outer wall of the lower end of the guide block f2, the outer wall of the left side of the stretching strip f5 is clamped and connected between the connecting seats f4, two guide blocks f2 are arranged on the outer walls of the two ends of the expander f1 in a mirror image mode, and the guide block f2 can be pushed to move together when the expander f1 is opened and closed.

The expander f1 comprises shift ring g1, locating lever g2, piston g3, filling groove g4, sealing block g5, shift ring g1 both ends outer wall activity cooperation is between guide block f2, locating lever g2 outer wall nested fit is in sealing block g5 inner wall, the joint is inlayed to the piston g3 lower extreme in the outer wall of locating lever g2 both ends top, filling groove g4 and shift ring g1 are the integral structure, sealing block g5 outer wall is inlayed and block in shift ring g1 lower extreme inner wall, filling groove g4 inner wall packing material is hydraulic oil, and the energy that hydraulic oil produced after being extrudeed can promote piston g3 and reset.

The following examples are set forth: when the device monitors river and lake water, the impurities in the water source are excessive, and the excessive impurities block parts of the device for monitoring the water source, the blocking of the parts prevents water flow from passing through, the water flow pushes the parts to move backwards, during the moving of the parts, part of the parts pass through a hollow groove arranged in the center of an expansion mechanism e1 and move inside the hollow groove, the movement inside the hollow groove is bound to contact an expander f1 arranged inside an expansion mechanism e1, the inner wall surface of the expander f1 is of an inclined structure, when the parts are pushed, longitudinal force is converted into transverse force and expands towards two ends, a guide block f2 is pushed to open through the expanding movement of the expander f1, the guide block f2 conducts to a moving rod f3 through the opening movement of the guide block f2, when the moving rod f3 moves, the diameter of structure can be enlarged to the removal of carriage release lever f3, make the inside of the impurity accessible bigger diameter of jam and circulation play equipment, realize the self-cleaning of equipment, when expander f1 is opened, the inside piston g3 that is equipped with of expander f1 just can extrude the inside hydraulic oil of filling groove g4, after accomplishing the diameter extension and having realized the impurity mediation, the thrust that equipment was given in rivers area just can reduce, and the inside hydraulic oil of filling groove g4 also can promote through the ability of automatic re-setting extension and drive the inside part of equipment and reset.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.