Water spraying prevention end cover of observation cylinder

Abstract

The utility model belongs to the field of vibration and noise control, and relates to a floating slab ballast bed accessory, in particular to a water spraying prevention end cover of an observation cylinder. The end cover comprises an end cover body, observation through holes are formed in the end cover body at intervals, the end cover further comprises a shielding plate and a switch device, the shielding plate is located above or below the end cover body, and the shielding plate is connected with the end cover body through the switch device and can move or rotate relatively to shield or avoid the observation through holes. The water spraying prevention end cover of the observation cylinder is simple in structure, convenient to operate, safe, reliable, economical and practical, can be widely applied to floating slab ballast bed vibration isolation engineering, and can be used for new line construction and old line reconstruction.

Description

Technical Field

[0001] The utility model belongs to the field of vibration and noise control, and relates to a floating plate track bed accessory, in particular to an observation tube water spray prevention end cover. Background Art

[0002] Vibration and noise are recognized as the most widespread public hazards, and are also a difficult problem that needs to be solved urgently in the development of rail transit in recent years. Among the existing vibration and noise reduction technologies for rail transit, the most successful practical application is the floating component technology, and the typical one is the floating ballast bed technology, which has high vibration isolation efficiency and stable working performance, and has become a consensus in the industry. Since the floating plate of the floating ballast bed is supported away from the foundation surface by the elastic vibration isolation device during normal operation, a drainage ditch is set below it. In order to be able to observe the situation below the floating plate at any time, to understand whether there is water or debris in the drainage ditch, and to facilitate the removal of debris, a number of observation tubes are pre-set on the floating plate. For example, the Chinese utility model patent with patent application number 200820172525.3 discloses a commonly used floating plate observation tube, which includes a cylinder body and an upper end cover. The end cover is opened as a maintenance channel during operation and maintenance, and the end cover is closed at ordinary times to prevent foreign objects from falling in and people from stepping in, which can meet the dual needs of maintenance and safety. However, it was found during operation that this type of observation tube could not directly observe the situation under the floating ballast during daily inspections, and the end cover must be opened for observation, which was very inconvenient. To solve this problem, some technicians developed a new observation tube with a transparent end cover, but due to the poor environmental conditions in the tunnel, dust, sewage, etc. were prevalent, and the light transmittance of the transparent material would soon be greatly reduced, affecting the effect of direct observation. Later, some technicians designed an end cover with an observation hole, which better solved the problems of daily observation, preventing foreign objects from falling in, and preventing people from stepping in. However, it was found in practice that since the space under the floating ballast is relatively closed and sewage is often stored, when the rail vehicle is in operation, when the vehicle enters the top of the floating plate, the elastic vibration isolator supporting the floating plate is compressed. Due to the pressure change under the floating plate, the sewage will be squeezed out of the observation hole of the end cover and splashed outward. Once it splashes onto the electrical facilities, it is easy to cause electrical short circuits, burns, and other problems, causing losses, and in serious cases, it will cause operation interruption.

[0003] In summary, the market urgently needs a safer and more reliable observation tube. Utility Model Content

[0004] The purpose of the utility model is to overcome the above-mentioned defects and provide a safer and more reliable anti-spray water end cover for an observation tube.

[0005] The utility model is a water-spray-proof end cover for an observation tube, which comprises an end cover body, on which observation holes are arranged at intervals, and further comprises a shielding plate and a switch device, wherein the shielding plate is located above or below the end cover body, and the shielding plate is connected to the end cover body through the switch device and allows relative movement or relative rotation, so as to achieve shielding or avoidance of the observation holes.

[0006] Preferably, auxiliary observation through holes are arranged on the shielding plate at intervals corresponding to the observation through holes of the end cover body; in addition, the observation through holes on the end cover body are arranged parallel to each other, and at least one group of switch devices is arranged. When auxiliary observation through holes are arranged on the shielding plate, the auxiliary observation through holes on the shielding plate are also arranged parallel to each other.

[0007] In the water-spray-proof end cover of the observation tube of the utility model, the specific structure of the switch device is varied according to the specific structure and matching mode of the shielding plate and the end cover body. Typical technical solutions include: (1) the switch device includes a shift channel and a shift handle. The shift channel is arranged on the end cover body. The shift handle passes through the shift channel to connect the shielding plate with the end cover body. The shift handle is partially exposed above the end cover body and the shielding plate; (2) the shielding plate is located above the end cover body. The switch device is a threaded fastener. The shielding plate is fixedly connected to the end cover body through the threaded fastener; (3) the shielding plate is located above the end cover body. The switch device includes a limit sliding connecting rod, A limit slide and a shift handle, at least two corresponding sets of limit slides and limit sliding links are arranged, the limit slide avoids the observation through hole arranged on the shielding plate, the limit sliding link passes through the limit slide and fixes the shielding plate on the end cover body; (4) the shielding plate is located above the end cover body, the switch device includes a rotating shaft, a shift channel and a shift handle, the shift channel is arranged in the middle of the shielding plate, the shift handle is arranged at the end of the shielding plate, the end cover body and the shielding plate are connected through a rotating shaft passing through the shift channel, the rotating shaft passes through the end cover body or is directly fixed on the end cover body, the shift handle is at least partially exposed above the end cover body and the shielding plate, etc., all of which can achieve good technical effects.

[0008] The arrangement of the observation through holes and the auxiliary observation through holes is varied. For example, the displacement channel is located at the center of the end cover body, and the observation through holes on the end cover body are arranged in a divergent manner from the center of the end cover body to the surroundings. When the auxiliary observation through holes are set on the shielding plate, the auxiliary observation through holes on the shielding plate are also arranged in a divergent manner from the center to the surroundings; furthermore, the observation through holes on the end cover body are arranged in a divergent manner from the center of the end cover body to the surroundings, and the displacement channel is an arc-shaped long strip hole with the center of the end cover body as the center of the circle; in addition, the displacement channel can also be located at the center of the end cover body, and the observation through holes on the end cover body are arranged radially from the center of the end cover body to the surroundings. When the auxiliary observation through holes are set on the shielding plate, the auxiliary observation through holes on the shielding plate are also arranged radially from the center to the surroundings.

[0009] There are also various ways to connect the shift handle and the baffle plate. Typically, the shift handle and the baffle plate are fixedly connected as one; or, a screw segment and a nut are provided on the upper part and / or the lower part of the shift handle, and an assembly through hole is provided on the end cover body and / or the baffle plate. The screw segment of the shift handle passes through the assembly through hole and cooperates with the nut to be connected to the end cover body and / or the baffle plate.

[0010] In the water spray prevention end cover of the observation tube of the utility model, the number of shielding plates can be more than one. According to different specific structures, the number of switch devices can be the same as the number of shielding plates, or can be different from the number of shielding plates.

[0011] As a typical technical solution, the utility model provides two baffles in the water-spray-proof end cover of the observation tube, the two baffles are hingedly arranged on the lower surface of the end cover body, a horizontal bracket is fixedly arranged at the bottom end of the shift handle, the horizontal bracket is located between the two baffles, and the shift handle cooperates with the baffles through the horizontal bracket.

[0012] The shift handle is provided with a limiting structure corresponding to the end cover body, the limiting structure clamps the end cover body or the limiting structure and the shielding plate cooperate to clamp the end cover body. The limiting structure is a limiting boss, a limiting block or a nut provided on the moving handle.

[0013] In order to prevent the baffle plate from shifting relative to the end cover body during operation, the water-spraying prevention end cover of the observation tube of the utility model may further include a locking device, wherein the locking device is a spring arranged between the end cover body and the baffle plate, or between the shift handle and the end cover body, or between the shift handle and the baffle plate, or the locking device is a threaded positioning piece arranged between the end cover body and the baffle plate.

[0014] As another typical application, the shift channel can be set as a square through hole, and the cross-sectional profile shape of the local section at the top of the shift handle is correspondingly set to a square, and its profile size is smaller than the square through hole size but cannot rotate in the square through hole, and the cross-sectional profile size of the lower part of the shift handle is smaller than the square through hole and can rotate in the square through hole.

[0015] In order to prevent the baffle plate from being deformed or damaged due to the adsorption effect on the baffle plate when water splashes onto it, limiting slide grooves can be respectively arranged on both sides of the end cover body corresponding to the baffle plate, the limiting slide grooves and the displacement channel are arranged parallel to each other, the baffle plate is embedded in the limiting slide grooves, and can slide relative to the end cover body along the limiting slide grooves; or, a limiting sliding connecting rod and a limiting slideway are arranged on the end cover body corresponding to the baffle plate, the limiting slideway and the displacement channel are arranged parallel to each other, the limiting sliding connecting rod connects the baffle plate and the end cover body together, and the limiting sliding connecting rod can slide relative to the end cover body along the limiting slideway together with the baffle plate; of course, the above two schemes can also be used in combination at the same time.

[0016] The utility model discloses an observation tube water spray prevention end cover, by adding a shielding plate and a switch device, during normal operation, the shielding plate always maintains effective shielding for the observation through hole on the end cover body, and the inspection personnel can directly move the shielding plate from above the floating plate by using the switch device during operation skylight time to remove the shielding for the observation through hole, and observe the situation below the floating plate from above the floating plate through the observation through hole or the observation through hole and the auxiliary observation through hole. Therefore, while ensuring that the observation tube system can perform normal conventional functions such as preventing foreign objects from falling in, preventing personnel from accidentally stepping in, and observing the bottom of the floating plate at any time during daily inspections, it can also ensure that during operation, sewage is effectively blocked from splashing from the observation through hole to the outside through the observation tube, which can effectively avoid problems such as electrical short circuit or damage caused by sewage splashing, thereby ensuring safe and smooth operation.

[0017] In summary, the utility model observation tube anti-water spray end cover has a simple structure, is easy to operate, safe and reliable, economical and practical, and can be widely used in floating slab track bed vibration isolation projects, which can be used not only for new line construction, but also for old line reconstruction. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is one of the structural schematic diagrams of the water-spray-proof end cover of the observation tube of the utility model.

[0019] Figure 2 for Figure 1 One of the structural diagrams of the middle end cover body.

[0020] Figure 3 for Figure 1 Schematic diagram of the structure of the middle baffle.

[0021] Figure 4 for Figure 1 The schematic diagram of the application of the water spray-proof end cover of the observation tube of the utility model is shown.

[0022] Figure 5 This is the second structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0023] Figure 6 for Figure 5 AA section view.

[0024] Figure 7 This is the third structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0025] Figure 8 for Figure 7 BB cross-sectional view.

[0026] Fig. 9 for Figure 7 Schematic diagram of the structure of the middle baffle.

[0027] Fig.10 This is the fourth structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0028] Fig.11 This is the fifth structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0029] Fig.12 This is the sixth structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0030] Fig.13 for Fig.12 CC cross-sectional view.

[0031] Fig.14 for Fig.13 Schematic diagram of the structure of the middle baffle.

[0032] Fig.15 This is the seventh structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0033] Fig.16 for Fig.15 DD cross-sectional view.

[0034] Fig.17 for Fig.15 The diagram shows the working principle of the cooperation between the shielding plate and the horizontal bracket in the water-spray-proof end cover of the observation tube of the utility model.

[0035] Fig.18 for Figure 1 The second structural diagram of the middle baffle.

[0036] Fig.19 This is the eighth structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0037] Fig. 20 for Fig.19 EE cross-sectional view.

[0038] Fig.21 This is the ninth structural schematic diagram of the water-spray-proof end cover of the observation tube of the present utility model.

[0039] Fig. 22 for Fig.21 FF cross-sectional view.

[0040] Fig.23 for Fig.21 Schematic diagram of the structure of the middle baffle.

[0041] Fig.24 This is the tenth structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0042] Fig.25 This is the eleventh structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0043] Fig.26 for Fig.25 GG cross-sectional view.

[0044] Fig. 27 This is the twelfth structural diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0045] Fig.28 for Fig. 27 HH cross-sectional view.

[0046] Fig.29 This is the thirteenth structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0047] Fig.30 for Fig.29 JJ cross-sectional view.

[0048] Fig.31 This is the fourteenth structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0049] Fig.32 for Fig.31 KK cross-sectional view.

[0050] Fig.33 for Fig.31 Schematic diagram of the structure of the middle baffle.

[0051] Fig.34 This is the fifteenth structural schematic diagram of the water-spray-proof end cover of the observation tube of the utility model.

[0052] Fig.35 for Fig.34 LL cross-sectional view.

[0053] Fig.36 for Fig.34 Schematic diagram of the structure of the middle baffle. DETAILED DESCRIPTION

[0054] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0055] Embodiment 1

[0056] like Figure 1 The water-spray-proof end cap of the observation tube of the utility model comprises a disc-shaped end cap body 1. The specific structure of the end cap body is as follows: Figure 2As shown, observation holes 2 are arranged at intervals on the end cover body 1; a shielding plate 3 and a switch device are also included, such as Figure 3 As shown, the shielding plate 3 is located below the end cover body 1, and the switch device includes a shift channel 5 and a shift handle 4. The shift channel 5 is arranged on the end cover body 1, and the shift channel 5 is located at the center of the end cover body 1. The observation through holes 2 on the end cover body 1 are arranged divergently from the center of the end cover body to the surroundings. The shift handle 4 passes through the shift channel 5 and is welded to the shielding plate 3. The shift handle 4 is partially located above the end cover body 1, wherein the shift channel 5 is specifically a square through hole set at the center of the end cover body 1, and the cross-sectional profile shape of the top partial segment M of the shift handle 4 is correspondingly set to a square, and its outline size is less than The shift handle 4 has a square through hole size but cannot rotate in the square through hole, the cross-sectional profile size of the lower part N of the shift handle 4 is smaller than the square through hole and can rotate in the square through hole, the baffle plate 3 is connected to the end cover body 1 through a switch device and can rotate relatively, so as to achieve blocking or avoiding the observation through hole; in addition, the shift handle 4 is provided with a limiting structure relative to the end cover body, and the limiting structure is specifically a nut 10; in addition, it also includes a locking device, and the locking device is specifically a spring 14 arranged between the end cover body 1 and the baffle plate 3; further, in order to facilitate assembly with the observation cylinder, a connecting through hole 6 is also arranged on the end cover body 1.

[0057] When applied, such as Figure 4 As shown, the observation barrel body 7 and the floating plate 9 are prefabricated in advance, and the water spray prevention end cover of the observation barrel of the utility model is fixedly connected to the observation barrel body 7 by the fastening screw 8 through the connecting through hole 6. Under normal working conditions, the shielding plate 3 keeps shielding the observation through hole 2. Since the shifting handle 4 and the shifting channel 5 are square partial sections M matched with the square through hole, the two cannot rotate relative to each other. Due to the existence of the spring 14, the relative distance between the end cover body 1 and the shielding plate 3 is also locked. When the rail vehicle is running, when the accumulated water under the floating plate is pressurized and splashed, it is directly blocked by the shielding plate 3 and cannot splash to the top of the observation tube through the observation hole; when it is necessary to observe the situation below the floating plate 9, lift the shift handle 4 upward with force to make the lower N section cooperate with the square through hole. At this time, the shift handle can be rotated to make the shielding plate 3 rotate about 90° relative to the end cover body 1, and the shielding of the observation through hole 2 by the shielding plate 3 is released. The bottom of the floating plate 9 can be directly observed through the observation through hole 2. After the observation is completed, the shift handle 4 is rotated to make the shielding plate 3 cover the observation through hole 2 again, and the shift handle 4 is lowered. The square local section M is used to cooperate with the square through hole. At the same time, the spring 14 rebounds to re-lock the relative position of the shielding plate and the end cover body, which is very convenient.

[0058] The utility model discloses an observation tube water spray prevention end cover, by adding a shielding plate and a switch device, during normal operation, the shielding plate always maintains effective shielding for the observation through hole on the end cover body, and the inspection personnel can directly use the switch device to rotate the shielding plate from above the floating plate during operation time to remove the shielding for the observation through hole, so that the situation below the floating plate can be observed from above the floating plate through the observation through hole. Therefore, while ensuring that the observation tube system can perform normal conventional functions such as preventing foreign objects from falling in, preventing personnel from accidentally stepping in, and observing the bottom of the floating plate at any time during daily inspections, it can also ensure that sewage is effectively blocked from splashing out of the observation through hole through the observation tube during operation, which can effectively avoid problems such as electrical short circuit or damage caused by sewage splashing, thereby ensuring safe and smooth operation.

[0059] In summary, the utility model observation tube anti-water spray end cover has a simple structure, is easy to operate, safe and reliable, economical and practical, and can be widely used in floating slab track bed vibration isolation projects, which can be used not only for new line construction, but also for old line reconstruction.

[0060] Embodiment 2

[0061] According to the different shapes of the observation tube, the outline of the end cover body of the water spray prevention end cover of the observation tube of the utility model can also be square. Figure 5 and Figure 6 The water-spray-proof end cover of the observation tube of the utility model shown in the figure is different from that of the first embodiment in that the contour shape of the end cover body 1 is a square, the observation through holes 2 on the end cover body 1 are arranged parallel to each other, and the shift channel 5 is specifically a long strip hole; in addition, a limiting structure is provided on the shift handle 4 corresponding to the end cover body 1, the shift handle 4 is specifically a screw rod, and the limiting structure is specifically a nut 10, and the nuts 10 correspondingly arranged on the upper and lower sides of the end cover body 1 cooperate with the screw rod to clamp the end cover body 1, and in addition, a screw section and a nut are provided at the lower part of the shift handle 4, and the shift handle 4 is connected to the baffle plate 3 through the cooperation of the screw section and the nut.

[0062] When applied, the application method of the water-spray-proof end cover of the observation tube of the utility model described in this example is basically the same as that described in the first embodiment, and will not be repeated here. It should be pointed out that when it is necessary to observe the situation below the floating plate, the shift handle 4 is toggled along the shift channel 5 from the top of the end cover body 1, and the shift handle 4 is dragged to the right side together with the shielding plate 3 to remove the obstruction of the observation through hole 2. After the inspection is completed, the shift handle 4 is toggled in the opposite direction along the shift channel 5, and the observation through hole 2 is re-shielded by the shielding plate 3.

[0063] Compared with Example 1, in the technical scheme described in this example, the shift handle adopts a screw and a nut to achieve assembly connection with the end cover body and the baffle plate, and the structure is simpler, which is conducive to reducing costs. In addition, a detachable assembly connection method is adopted, which is convenient for maintenance and replacement of the end cover body and the baffle plate, and its economy and practicality are better.

[0064] It should be noted that in order to facilitate the assembly and connection with the observation cylinder, as shown in Example 1, a connecting through hole is often required to be set on the end cover body, which can be set as needed in actual applications. Since this technical feature is not the main invention point of the utility model, it is not specifically shown in this example and subsequent figures, but is explained here.

[0065] Embodiment 3

[0066] like Figure 7 and Figure 8 The difference between the water-spray-proof end cap of the observation tube of the utility model shown in the figure and the second embodiment is that the displacement channel 5 is arranged in the middle of the end cap body 1, and observation through holes 2 parallel to each other are arranged on both sides of the displacement channel 5; in addition, the Fig. 9 The shielding plate 3 shown in the figure has auxiliary observation holes 12 arranged on the shielding plate 3 at intervals corresponding to the observation holes 2 of the end cover body 1, the outline size of the auxiliary observation holes 12 is not larger than the outline size of the observation holes 2, and the outline size of the grille 13 between adjacent auxiliary observation holes 12 is not smaller than the outline size of the observation holes 2; in addition, the limiting structure arranged on the shift handle 4 is specifically a limiting boss 11, and the threaded section at the upper part of the shift handle 4 passes through the shift channel 5 arranged on the end cover body 1, and then the limiting boss 11 is used in cooperation with the nut to clamp and fix the end cover body 1 on the shift handle 4; at the same time, an assembly hole 19 is arranged on the shielding plate 3, and the threaded section at the lower part of the shift handle 4 passes through the assembly hole 19, and then the limiting boss 11 is used in cooperation with the nut to clamp and fix the shielding plate 3 on the shift handle 4.

[0067] When applied, the difference from the second embodiment is that, during the working process, the relative position of the baffle plate 3 and the end cover body 1 is controlled so that the auxiliary observation through hole 12 on the baffle plate 3 and the observation through hole 2 on the end cover body 1 remain misaligned, that is, the grille 13 on the baffle plate 3 and the observation through hole 2 on the end cover body 1 remain overlapped. At this time, the observation through hole 2 is completely shielded by the baffle plate 3, and the accumulated water under the floating plate cannot splash out through the observation through hole 2; when it is necessary to check the bottom of the floating plate, the shift handle 4 is moved along the shift channel 5 to drive the baffle plate 3 to move relative to the end cover body 1 until the observation through hole 2 and the auxiliary observation through hole 12 are in an overlapping state. At this time, the situation under the floating plate can be observed from above the floating plate through the observation through hole 2 and the auxiliary observation through hole 12. After the inspection is completed, the shift handle 4 is moved so that the grille 13 on the baffle plate 3 is overlapped with the observation through hole 2 on the end cover body 1 again to restore the shielding working state, which is very convenient.

[0068] Compared with the second embodiment, in the technical solution described in this embodiment, since an auxiliary observation through hole is added to the baffle plate, the shift handle only needs to be translated a short distance to achieve the overlap or misalignment of the observation through hole 2 and the auxiliary observation through hole 12, and the operation is simpler and faster. In addition, since the long hole size of the required shift channel is very short, the observation through holes can be set on both sides of the shift channel at the same time, and the number of observation through holes is greatly increased, which facilitates observation and use. It is also beneficial to reduce material consumption and reduce the total weight of the water-spraying prevention end cover of the observation tube of the utility model. It is more convenient to carry and install, which is beneficial to reduce costs and improve construction efficiency.

[0069] Based on the technical principle of this example, when the size of the shielding plate is large, more than one set of switch devices can be provided. Fig.10 As shown, Figure 7 The difference of the technical solution shown is that two groups of switch devices are provided, and the two groups of switch devices are symmetrically arranged on the end cover body and the shielding plate. When in use, the two shift handles can be moved to one side at the same time, so that the horizontal force of the shielding plate is more uniform and it is not easy to deflect and get stuck; in addition, a corresponding number of shielding plates can be provided to cooperate with the switch devices, for example Fig.11 As shown, two shielding plates are provided, and two groups of switch devices are provided correspondingly, and each group of switch devices corresponds to one shielding plate. Since the size of the shielding plate is relatively small, the operation is easier and smoother when it is turned.

[0070] In addition, it should be pointed out that the limiting structure provided on the shift handle, in addition to the nut and limiting protrusion already mentioned, can also be other structures such as limiting blocks, which can also achieve good results; furthermore, based on the technical principle of this example, 3 or more blocking blocks can be provided, and correspondingly, three or more groups of switch devices can be provided, which can be designed and used according to engineering needs. Here, only textual description is given without additional drawings, which is also within the protection scope required by the present utility model.

[0071] Embodiment 4

[0072] like Fig.12 and Fig.13 The difference between the water-spray-proof end cap of the observation tube of the utility model shown in the figure and the third embodiment is that the displacement channel is located at the center of the end cap body 1, and the observation through holes 2 on the end cap body 1 are arranged radially from the center of the end cap body to the surroundings. Fig.14 As shown, the auxiliary observation holes 12 on the disc-shaped shielding plate 3 are also arranged radially from the center of the shielding plate to the surrounding areas; in addition, the lower end of the shift handle 4 is welded and fixedly connected to the shielding plate, and a spring 14 is also provided between the nut 10 on the shift handle and the end cover body 1 as a locking device.

[0073] When in use, press the shift handle 4 downward to compress the spring 14, so that the end cover body 1 and the baffle plate 3 remain separated, and then rotate the shift handle 4, thereby driving the baffle plate 3 and the end cover body 1 to rotate relative to each other, so that the auxiliary observation through hole 12 on the baffle plate 3 and the observation through hole 2 on the end cover body 1 can be kept overlapping or misaligned to meet the different needs of maintenance and normal operation.

[0074] Compared with the third embodiment, the technical solution described in this embodiment utilizes the rotation of the shift handle to achieve the overlapping or misalignment of the auxiliary observation through hole on the shielding plate and the observation through hole on the end cover body, and there is no need to translate the shift handle. Therefore, the shift channel only needs one circular hole, which is easier to process. In addition, since a spring is added between the limiting structure and the end cover body in this embodiment, after adjusting the relative position of the shielding plate and the end cover body, the shift handle is stopped from being pressed. By utilizing the rebound force of the spring, the shielding plate can be automatically re-attached to the surface of the end cover body, and the relative position between the shielding plate and the end cover body is in a locked state, thereby avoiding relative displacement of the shielding plate and the end cover body due to vibration and other reasons during operation, which is safer and more reliable.

[0075] Embodiment 5

[0076] like Fig.15 and Fig.16 The water-spray-proof end cover of the observation tube of the utility model shown in the figure is different from the third embodiment in that two baffle plates 3 are provided, and the two baffle plates 3 are hingedly provided on the bottom surface of the end cover body 1 through hinges 16, and a horizontal bracket 15 is fixedly provided at the bottom end of the shift handle 4, and the horizontal bracket 15 is located between the two baffle plates 3, and the shift handle 4 cooperates with the baffle plates 3 through the horizontal bracket 15; in addition, a spring 14 is also provided between the nut 10 on the shift handle and the end cover body 1.

[0077] When applied, such as Fig.17 As shown, when it is necessary to check the bottom of the floating plate, the horizontal bracket 15 is rotated between the two baffle plates 3 to release the support for the baffle plates 3. At this time, the baffle plates 3 naturally droop under the connection of the hinges 16, and the observation holes 2 on the end cover body 1 remain unobstructed, so that the situation under the floating plate can be directly observed from above through the observation holes; after the inspection is completed, the shift handle 4 is pressed to compress the spring 14 to make the horizontal bracket 15 leave the surface of the end cover body 1, and then the horizontal bracket 15 is rotated about 90°, and the horizontal bracket lifts up the baffle plates 3 on both sides again to restore the shielding of the observation holes 2. After the horizontal bracket is rotated into place, stop pressing the shift handle 4, and the spring 14 rebounds, automatically pressing the horizontal bracket 15 against the bottom surface of the baffle plates 3 to lock the relative position between the baffle plates and the end cover body.

[0078] The beneficial technical effects of the spring provided in this example are substantially the same as those described in the fourth embodiment and will not be repeated here.

[0079] Embodiment 6

[0080] like Figure 1 , Figure 2 and Fig.18 The water spray-proof end cover of the observation tube of the utility model shown in the figure is different from the first embodiment in that it adopts Fig.18 In the shielding plate 3 of the structure shown, the shift handle 4 is welded and fixed to the shielding plate 3 , and auxiliary observation through holes 12 are arranged on the shielding plate 3 at intervals corresponding to the observation through holes 2 of the end cover body 1 .

[0081] When in use, the difference from Example 1 is that when it is necessary to inspect the bottom of the floating plate, lift and turn the shift handle 4 so that the auxiliary observation hole 12 on the shielding plate overlaps with the observation hole 2 on the end cover body 1, and then the bottom of the floating plate can be observed from above through the observation hole 2 and the auxiliary observation hole 12; after the inspection is completed, lift and turn the shift handle, use the shielding plate to re-cover the observation hole 2 to restore the working state.

[0082] Embodiment 7

[0083] like Fig.19 and Fig. 20 The water-spray-proof end cover of the observation tube of the utility model shown in the figure is different from the third embodiment in that limiting grooves 17 are respectively arranged on both sides of the end cover body 1 corresponding to the baffle plate 3, the limiting grooves 17 and the shift channel 5 are arranged parallel to each other, the baffle plate 3 is embedded in the limiting grooves 17, and can slide relative to the end cover body 1 along the limiting grooves 17; in addition, it also includes a locking device, which is specifically a spring 14 arranged between the baffle plate 3 and the shift handle 4.

[0084] Compared with the third embodiment, the technical solution described in this embodiment is provided with a limit slide 17. When in use, the water under the floating plate flows onto the shielding plate and is blocked by the shielding plate and cannot splash out of the observation tube. However, when the water is separated from the shielding plate, it will generate a certain suction force on the shielding plate. Since the shielding plate is large in size, in order to avoid deformation of the shielding plate, a thicker shielding plate must be used if no other reinforcement measures are taken. This not only increases the material cost, but also brings many inconveniences to the operation links such as transportation. This problem is completely avoided by using a limit slide to provide auxiliary reinforcement for the shielding plate, and the thickness of the shielding plate can be optimized. A relatively thin shielding plate can meet the strength requirements, which is conducive to reducing costs and facilitating processing and transportation operations. In addition, since a spring 14 is provided, the end cover body 1 and the shielding plate 3 can always be kept in close contact, which is conducive to preventing the sewage under the floating plate from spraying out.

[0085] Embodiment 8

[0086] like Fig.21 , Fig. 22 and Fig.23 The water-spray-proof end cover of the observation tube of the utility model shown in the figure is different from the seventh embodiment in that a limiting sliding link 21 and a limiting slide 20 are provided on the end cover body 1 corresponding to the baffle plate 3, the limiting slide 20 and the displacement channel 5 are arranged parallel to each other, and a through hole 18 is provided on the baffle plate 3 corresponding to the limiting slide 20. The limiting sliding link 21 passes through the limiting slide 20 and the through hole 18 to connect the baffle plate 3 with the end cover body 1, and the limiting sliding link 21 can slide relative to the end cover body 1 along the limiting slide 20 together with the baffle plate 3.

[0087] Similar to the technical principle in Example 7, in the technical scheme described in this example, the limiting sliding link 21 is used in conjunction with the limiting slide 20 and the through hole 18 to auxiliary reinforce the baffle plate 3 at the four corners, so that the connection between the baffle plate 3 and the end cover body 1 is more stable and reliable, and can effectively prevent the water flow from adsorbing the baffle plate during use, causing the baffle plate to deform or even fall off. In practice, it can be suitable for thinner baffle plates, which is beneficial to reducing costs and facilitating processing and transportation operations.

[0088] Of course, this example is described by taking four limit sliding links 21 and limit slides 20 as an example. In actual applications, six, eight, or even more limit sliding links and limit slides may be provided to help reinforce the baffles according to the size and thickness of the baffles. In practice, the baffles may be designed and used according to engineering needs. In addition, based on the technical principles of Embodiment 7 and this example, Fig.24 As shown, a limiting slide groove, a limiting sliding link and a limiting slideway can also be provided on the end cover body to cooperate with the baffle plate for reinforcement connection, which can also achieve a good auxiliary reinforcement effect. These are simple combinations or changes based on the technical principles of the utility model and are also within the protection scope required by the utility model.

[0089] Embodiment 9

[0090] like Fig.25 and Fig.26 The anti-spraying end cover of the observation tube of the utility model shown in the figure is different from the seventh embodiment in that the baffle plate 3 is arranged above the end cover body 1, and the corresponding limiting slide groove 17 is also arranged on the top surface of the end cover body 1, and the limiting slide grooves 17 are respectively arranged on both sides of the end cover body 1 corresponding to the baffle plate 3, the limiting slide grooves 17 and the displacement channel 5 are arranged parallel to each other, the baffle plate 3 is embedded in the limiting slide groove 17, and can slide relative to the end cover body 1 along the limiting slide groove 17; in addition, two groups of switch devices are arranged, and the two groups of switch devices are symmetrically arranged on both sides of the observation through hole 2 and the auxiliary observation through hole 12.

[0091] The application method and principle of the anti-spraying end cover of the observation tube described in this example are basically the same as those described in Example 1, and will not be repeated here. Under normal working conditions, the observation hole 2 and the auxiliary observation hole 12 remain in a misaligned state, that is, the observation hole 2 is completely shielded from the top by the shielding plate 3; when inspecting and maintaining, push the shift handle 4 to drive the shielding plate 3 to slide relative to the end cover body 1 along the shift channel 5 until the observation hole 2 and the auxiliary observation hole 12 remain in a coincident state, so that the situation below the end cover body can be observed smoothly from above, which is very convenient; in addition, due to the presence of the spring 14, the shielding plate 3 can always be kept in close contact with the end cover body 1, which can effectively prevent the water below the floating plate from splashing out through the observation hole during operation.

[0092] Embodiment 10

[0093] Based on the technical principle of the ninth embodiment, Fig. 27 and Fig.28 The anti-spraying end cover of the observation tube of the utility model shown in the figure is different from the eighth embodiment in that the baffle plate 3 is located above the end cover body 1, and the switch device includes a limit sliding link 21, a limit slide 20 and a shift handle 4. The limit slide 20 and the limit sliding link 21 are correspondingly arranged in four groups, which are symmetrically arranged in pairs on both sides of the observation hole 2 and the auxiliary observation hole 12, wherein the limit slide 20 avoids the observation hole 2 and is set on the baffle plate 3, and the limit sliding link 21 passes through the limit slide 20 and fixes the baffle plate 3 on the end cover body 1; in addition, the shift handle 4 is directly fixed on the top surface of the baffle plate 3, and the shift handle 4 is completely exposed above the baffle plate 3.

[0094] Compared with the eighth embodiment, in the technical solution described in this example, after the limit slide is set on the shielding plate, the limit slide essentially integrates the functions of the limit slide and the displacement channel in the eighth embodiment, and its structure is simpler and more compact. In addition, reducing the number of openings in the system is also conducive to better preventing the water under the floating plate from splashing out through the openings during operation, and the anti-spraying effect is better.

[0095] Of course, based on the technical principle of this example, at least two groups of limit slides and limit sliding links are provided correspondingly, and six groups or even more groups can be provided. In practice, the design can be carried out according to the actual needs of the project.

[0096] Embodiment 11

[0097] like Fig.29 and Fig.30 The anti-spraying end cover of the observation tube of the utility model shown in the figure is different from the tenth embodiment in that the baffle plate 3 is located above the end cover body 1, the baffle plate 3 is made of a non-porous steel plate, the switch device is a threaded fastener 22, and the baffle plate 3 is fixedly connected to the end cover body 1 through the threaded fastener 22.

[0098] When the floating plate is applied to work normally, the shielding plate 3 always keeps shielding the observation through hole 2 on the end cover body 1. When it is necessary to check the situation below the floating plate, unscrew the threaded fastener 22 on one side, and use the threaded fastener on the other side as the axis to rotate the shielding plate 3 relative to the end cover body 1 until the shielding of the observation through hole 2 is released. After the inspection and maintenance is completed, the shielding plate 3 is rotated back to its original position, and then the threaded fastener 22 is used to fix it with the end cover body 1 again, which is very convenient.

[0099] The technical solution described in this example involves fewer components, has a simpler structure, and is very concise and practical.

[0100] Embodiment 12

[0101] like Fig.31 , Fig.32 and Fig.33 The water-spray-proof end cover of the observation tube of the utility model shown in the figure is different from the first embodiment in that two groups of switch devices are arranged, wherein the shifting channels 5 are symmetrically arranged on the end cover body 1, and one end of the shifting handle 4 is fixedly connected to the shielding plate 3 and passes through the shifting channel 5 to connect the shielding plate 3 and the end cover body 1 together.

[0102] Compared with the first embodiment, in the technical solution described in this example, since two sets of switch devices are arranged at intervals, it is more labor-saving to rotate the shielding plate during application, and the complex design of the shift handle and the shift channel is reduced, the structure is simpler and more compact, which is conducive to reducing product costs and improving operating efficiency. It should be particularly pointed out that in this example, the shift channel 5 also has the function of observing the through hole 2, which greatly improves the space utilization efficiency.

[0103] Embodiment 13

[0104] like Fig.34 , Fig.35 and Fig.36 The water-spray-proof end cover of the observation tube of the utility model shown in the figure is different from the twelve embodiments in that the baffle plate 3 is located above the end cover body 1, and the switch device includes a rotating shaft 23, a shifting channel 5 and a shifting handle 4. The shifting channel 5 is arranged in the middle of the baffle plate 3, and the shifting handle 4 is arranged at the end of the baffle plate 3. The end cover body 1 is connected to the baffle plate 3 by the rotating shaft 23 passing through the shifting channel 5. The lower end of the rotating shaft 23 is directly fixed on the end cover body 1, and the shifting handle 4 is partially exposed above the baffle plate.

[0105] The technical solution described in this example can also achieve the technical effect of preventing water under the floating plate from splashing outward through the observation hole due to the addition of the shielding plate. Of course, based on the technical principle of this example, the lower part of the rotating shaft can also be set through the end cover body, and then connected with the screw and nut. This detachable structure is more convenient for later maintenance.

[0106] The embodiments in the present invention are only for better illustrating the technical solutions of the present invention and should not be regarded as limiting the present invention. The technical features in many embodiments may also be used interchangeably. Based on the technical principles of the present invention, those skilled in the art may re-combine the technical solutions described in the above embodiments or simply replace some of the components therein with similar technologies. As long as they are based on the technical principles of the present invention, they are within the protection scope required by the present invention.

Claims

1. An anti-spray end cap of an observation tube, comprising an end cap body, on which observation through holes are arranged at intervals, characterized in that It also includes a shielding plate and a switch device. The shielding plate is located above or below the end cover body. The shielding plate is connected to the end cover body through the switch device and allows relative movement or relative rotation to achieve shielding or avoidance of the observation through hole.

2. The water-spray-proof end cap of the observation tube according to claim 1, characterized in that: The shielding plate is provided with auxiliary observation through holes at intervals corresponding to the observation through holes of the end cover body.

3. The water-spray-proof end cap of the observation tube according to claim 1, characterized in that: The observation through holes on the end cover body are arranged parallel to each other, and at least one group of switch devices is arranged.

4. The water-spray-proof end cap of the observation tube according to claim 1, 2 or 3, characterized in that: The switch device comprises a shift channel and a shift handle. The shift channel is arranged on the end cover body. The shift handle passes through the shift channel to connect the shielding plate with the end cover body. The shift handle is partially exposed above the end cover body and the shielding plate.

5. The water-spray-proof end cap of the observation tube as claimed in claim 4, characterized in that: The displacement channel is located at the center of the end cover body, and the observation through holes on the end cover body are arranged in a divergent shape from the center of the end cover body to the surroundings.

6. The water-spray-proof end cap of the observation tube according to claim 4, characterized in that: The observation through holes on the end cover body are arranged in a divergent shape from the center of the end cover body to the surroundings, and the displacement channel is an arc-shaped long strip hole with the center of the end cover body as the center of the circle.

7. The water-spray-proof end cap of the observation tube according to claim 4, characterized in that: The displacement channel is located at the center of the end cover body, and the observation through holes on the end cover body are radially arranged from the center of the end cover body to the surrounding areas.

8. The water-spray-proof end cap of the observation tube according to claim 4, characterized in that: The upper part and / or the lower part of the shift handle are provided with a screw section and a nut, and the end cover body and / or the shielding plate are provided with an assembly through hole. The screw section of the shift handle passes through the assembly through hole and cooperates with the nut to be connected with the end cover body and / or the shielding plate.

9. The water-spray-proof end cap of the observation tube according to claim 4, characterized in that: Two shielding plates are provided, and the two shielding plates are hingedly provided on the lower surface of the end cover body. A horizontal bracket is fixedly provided at the bottom end of the shift handle, and the horizontal bracket is located between the two shielding plates. The shift handle cooperates with the shielding plates through the horizontal bracket.

10. The water-spray-proof end cap of the observation tube according to claim 4, characterized in that: A limiting structure is provided on the shift handle corresponding to the end cover body, and the limiting structure clamps the end cover body or the limiting structure cooperates with the shielding plate to clamp the end cover body.

11. The water-spray-proof end cap of the observation tube according to claim 10, characterized in that: The limiting structure is a limiting boss, a limiting block or a nut arranged on the moving handle.

12. The water-spray-proof end cap of the observation tube according to claim 4, characterized in that: It also includes a locking device, which is a spring arranged between the end cover body and the shielding plate, or between the shift handle and the end cover body, or between the shift handle and the shielding plate, or the locking device is a threaded positioning piece arranged between the end cover body and the shielding plate.

13. The water-spray-proof end cap of the observation tube according to claim 4, characterized in that: The shift channel is a square through hole, and the cross-sectional profile shape of the local section at the top of the shift handle is correspondingly set to a square, and its profile size is smaller than the square through hole size but cannot rotate in the square through hole, and the cross-sectional profile size of the lower part of the shift handle is smaller than the square through hole and can rotate in the square through hole.

14. The water-spray-proof end cap of the observation tube according to claim 4, characterized in that: Limiting slide grooves are respectively arranged on the end cover body corresponding to the two sides of the shielding plate. The limiting slide grooves and the displacement channel are arranged parallel to each other. The shielding plate is embedded in the limiting slide grooves and can slide relatively with the end cover body along the limiting slide grooves.

15. The water-spray-proof end cap of the observation tube according to claim 4, characterized in that: A limiting sliding link and a limiting slide are arranged on the end cover body corresponding to the baffle plate. The limiting slide and the displacement channel are arranged parallel to each other. The limiting sliding link connects the baffle plate and the end cover body together, and the limiting sliding link can slide relative to the end cover body along the limiting slide together with the baffle plate.

16. The water-spray-proof end cap of the observation tube according to claim 1, 2 or 3, characterized in that: The shielding plate is located above the end cover body, and the switch device includes a rotating shaft, a shifting channel and a shifting handle. The shifting channel is arranged in the middle of the shielding plate, and the shifting handle is arranged at the end of the shielding plate. The end cover body and the shielding plate are connected by a rotating shaft passing through the shifting channel. The rotating shaft passes through the end cover body or is directly fixed on the end cover body, and the shifting handle is at least partially exposed above the end cover body and the shielding plate.

17. The water-spray-proof end cap of the observation tube according to claim 1, 2 or 3, characterized in that: The baffle plate is located above the end cover body, and the switch device includes a limit sliding link, a limit slide and a shift handle. At least two groups of limit slides and limit sliding links are correspondingly arranged. The limit slide avoids the observation through hole arranged on the baffle plate, and the limit sliding link passes through the limit slide and fixes the baffle plate on the end cover body.

18. The water-spray-proof end cap of the observation tube according to claim 1 or 3, characterized in that: The shielding plate is located above the end cover body, the switch device is a threaded fastener, and the shielding plate is fixedly connected to the end cover body through the threaded fastener.

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