Well lid of rectangular valve well
The design of a split rectangular cover combined with track wheels solves the problem of heavy and difficult opening and closing of valve manhole covers in large factories, achieves safe and efficient manhole cover operation, and reduces costs and safety risks.
Patent Information
- Application Number
- CN202422873306.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-25
- Publication Date
- 2025-09-26
- Estimated Expiration
- 2034-11-25
AI Technical Summary
The manhole covers of valve wells in large factories are bulky and difficult to open and close, which increases the cost of mechanical operation and safety risks. In addition, the conventional manhole cover design is not convenient for discharging toxic and harmful gases, affecting maintenance efficiency and safety.
The design adopts a split rectangular cover combined with track wheels. The cover is opened and closed by sliding the track wheels on the guide rails. It is also equipped with safety hooks, waterstops and rain shelters to ensure safe and efficient operation.
It realizes the safe and convenient opening and closing of the manhole cover, reduces the manpower demand, reduces the mechanical operation cost, prevents the intrusion of rainwater, and improves the maintenance efficiency and safety.
Smart Images
Figure CN223386684U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the field of valve wells, and in particular relates to a rectangular valve well cover, in particular to various rectangular valve well covers in large factories. Background Art
[0002] With the rapid development of economy and the continuous advancement of technology, there are more and more large and super-large factories. The outstanding features of these factories are not only large in area, but also many devices and complex process pipelines. Due to the limitation of process production and site area, some pipelines in most factories are often buried underground as needed, such as fire protection pipelines, water supply and drainage pipelines, sewage pipelines, and electrical instrument and telecommunication pipelines. This is particularly prominent in large and super-large projects. In order to facilitate operation and maintenance, valve wells are often set up in necessary places to meet production needs. Conventional valve wells are often formed by masonry or concrete pouring in one step. In order to ensure sufficient strength and meet the requirements of support, the well covers are often made of concrete slabs or steel plates. The method of reinforcing with steel sections makes the cover extremely heavy to a certain extent. In the daily production and operation process of the factory, it is often necessary to operate the valves in the well and conduct irregular inspections and maintenance. Therefore, each opening and closing requires the help of lifting machinery. Some restricted areas can only be opened by the heavy method of hand winches. If machinery is used, it is necessary to go through the entry procedures and be equipped with supervisors. In the case of a large number of valve wells in large factories, the economic cost is increased and the work efficiency is greatly reduced. The use of a reduced wellhead plus a round ordinary manhole cover will make it difficult to discharge toxic and harmful gases in the well, and it is inconvenient to operate and maintain. The inconvenience in maintenance or operation also increases the probability of safety accidents to a certain extent. Utility Model Content
[0003] The purpose of the present invention is to solve the above-mentioned existing problems by adding rails to realize the operation, maintenance, and inspection of equipment and facilities in the well, and to realize the safe and efficient opening and closing of the well cover, so as to solve the problem of high cost and high risk of mechanical operation.
[0004] The technical solutions adopted in this utility model are as follows:
[0005] A rectangular valve well cover includes a split rectangular cover plate that covers the valve well mouth and can be opened and closed. The cover plate is fixedly connected to the track wheel at the bottom. A guide rail fixed to the valve well wall is provided below the track wheel. The track wheel slides on the guide rail. A safety hook is provided on the bottom surface of the cover plate. A baffle for clamping the safety hook is fixed to the inner wall of the valve well. A water stop is provided above the cover plate, and a reversible rain shelter is provided above the water stop.
[0006] Furthermore, there are two cover plates, which are arranged in a split-open manner. The width of the cover plates is greater than the width of the valve well. The length of the cover plates can be, for example, 2 / 3-4 / 5 of the length of the valve well. The cover plates are provided with a lower edge in the length direction. The lower edge is used to prevent rainwater from entering the valve well from the gap between the cover plates and the valve well. The two cover plates are opened or closed by the sliding of the track wheels on the guide rails.
[0007] Furthermore, there are two guide rails that are arranged in parallel and fixed to the top surface of the valve well wall. Preferably, the guide rails are arranged on the long side of the valve well wall. Each guide rail includes an embedded plate fixedly connected to the top surface of the valve well wall, a fixed track fixed above the embedded plate, and a plurality of telescopic tracks sliding on the fixed track. The bottom of the embedded plate is connected to a plurality of round steel anchor bars. The embedded plate can be, for example, a steel plate. The embedded plate and the round steel anchor bars are connected by perforation and plug welding. The embedded plate and the round steel anchor bars are buried when the valve well concrete is poured or masonry is built.
[0008] Furthermore, the fixed track is in an inverted T shape, and the fixed track includes a base connected to the embedded plate and a guide body integrally formed with the base. A plurality of first through holes are opened on the guide body, and the first through holes are arranged along the length direction of the guide body. A first shaft is provided in the first through hole, and the two ends of the first shaft are respectively connected to the sliding wheels. A first stop is provided on the guide body, and the first stop is arranged at a position close to the rear end of the guide body. The fixed track is reliably connected to the grounding grid to ensure the release of static electricity and damage caused by lightning current.
[0009] Furthermore, there are four telescopic rails, two telescopic rails are slidably arranged on each fixed rail, two of the parallel telescopic rails are arranged below one cover plate, and the other two parallel telescopic rails are arranged below the other cover plate.
[0010] Furthermore, each telescopic rail includes two L-shaped bottom plates that can semi-enclose the sliding wheel and are arranged opposite to each other, and a top plate connecting the two bottom plates. The distance between the two L-shaped bottom plates is slightly larger than the distance between the two coaxially connected sliding wheels, for example, 1-3 mm larger. The two oppositely arranged L-shaped bottom plates constitute a limit for the telescopic guide rail. The sliding wheel supports the telescopic guide rail to slide along the guide body. The front end of the top plate is provided with a second stop extending into the inside of the telescopic guide rail. The length of the second stop extending into the inside of the telescopic guide rail is sufficient to enable the first stop to constitute a block, which is used to prevent the telescopic rail from sliding out of the fixed rail. The front and rear ends of the top plate are both provided with a third stop. The third stop is fixed above the top plate. The third stop is used to prevent the track wheel from sliding out of the telescopic rail.
[0011] Furthermore, there are multiple track wheels, and two groups of track wheels are fixed under each cover plate. The track wheels in the same group are arranged in sequence along the length direction of the cover plate. For example, there can be three track wheels in the same group, namely the front track wheel, the middle track wheel and the rear track wheel. The distance between the front track wheel and the cover plate joint is A, and A can be, for example, 10-15CM. The distance between the front track wheel and the middle track wheel is B, and the distance between the middle track wheel and the rear track wheel is C. A:B:C is approximately 1:6:3 to ensure the stability of the cover plate. The two groups of track wheels are arranged in parallel and the distance between them is consistent with the distance between the guide rails. Each group of track wheels corresponds to a telescopic track.
[0012] Furthermore, the track wheel includes a roller that rolls along the telescopic track, an axle that passes through the center of the roller, and a limit plate fixedly connected to both ends of the axle. The top of the limit plate is connected to the load-bearing steel fixed under the cover plate, and the bottom end of the limit plate spans the telescopic guide rail. The length of the roller is slightly larger than the width of the telescopic track, for example, 3-10mm larger. The closer to the water stop, the longer the limit plate above the axle. When the two cover plates are closed, the middle is high and the two sides are low.
[0013] Furthermore, the safety hook is arranged on the cover plate between the load-bearing steel, and the safety hook includes a hook body and a connecting ring arranged at one end of the hook body. The end of the hook body away from the connecting ring forms an open arc body, and the connecting ring is connected to the first suspension body fixed on the cover plate. The arc body is overlapped on the second suspension body. The first suspension body is a closed annular body, and the second suspension body is an annular body with an opening.
[0014] Furthermore, there are four baffles, which are respectively arranged at the four corners of the valve well. The baffles are fixed on the well wall in the length direction of the valve well. The distance between the baffle and the cover plate is approximately equal to the length of the safety hook. The distance between the baffle and the well wall in the width direction is slightly larger than the diameter or thickness of the hook body, for example, 1-2 mm larger. The baffle can bear the weight of the cover plate without bending and deforming. When the safety hook is lowered, the hook body can pass through the gap between the baffle and the well wall and hook the arc body on the baffle to prevent the cover plate from moving back and forth, avoid safety risks, and at the same time bear part of the weight of the cover plate.
[0015] Furthermore, a waterstop is arranged on the edge of the cover plate joint. The waterstop has a certain height, for example, 3-10 cm, and the width of the waterstop is not less than 1 cm. After the two cover plates are closed, the waterstop is used to prevent rainwater from entering the valve well through the gap between the two cover plates.
[0016] Furthermore, the rainproof canopy is rotatably connected to one of the cover plates, for example, the rainproof canopy and the cover plate are connected via a hinge. The rainproof canopy is, for example, an eight-shaped structure formed by two rain shields. The angle between the two rain shields can enable the rain shields to cover the waterstop. The rainproof canopy can be, for example, an L100*8 angle steel. The rainproof canopy prevents rainwater from intruding. A first hook is fixed on the rain shield plate that is not connected to the hinge, and a second hook is fixed on the cover plate that is not provided with a hinge. Both the first hook and the second hook are L-shaped structures. The first hook is fixed to the rain shield in an L shape, and the second hook is fixed to the cover plate in an inverted L shape. The positions of the first hook and the second hook correspond to each other.
[0017] Furthermore, the cover plates between the load-bearing steels are fixed with reinforced steel sections, and a plurality of lifting rings for easy grasping are fixed on the top surface of the cover plates. The lifting rings are used to facilitate construction workers to move the cover plates. The material of the cover plates may be, for example, steel plates.
[0018] Furthermore, a semicircular valve stem hole is provided on one side of the cover plates for the valve stem to extend out. After the two cover plates are closed, the semicircular valve stem hole forms a valve stem circular hole, and a semicircular water stop is provided along the edge of the semicircular valve stem hole.
[0019] Furthermore, a rain cover is detachably connected to the valve stem, and the rain cover includes a trumpet-shaped main body and a clamping portion for fixing the main body to the valve stem. The maximum opening of the main body is downward, and the main body is higher than the water stop, for example, by 0.2-1 cm, preferably by about 0.5 cm. The main body is formed by winding a rectangular plate and a trapezoidal plate, and the rectangular plate is connected to the short side of the trapezoidal plate. The rectangular plate is wound to form a tubular body, and the trapezoidal winding forms a trumpet body. The clamping portion includes a U-shaped pipe clamp, a connecting hole opened on the pipe clamp, a bolt passing through the connecting hole, and a nut used in conjunction with the bolt. The pipe clamp includes an arc The arc-shaped part and two parallel connecting plates connected to the two sides of the arc-shaped part, the connecting holes are coaxially arranged on the connecting plates, firstly, it is wound around the valve stem to form the main body, and the sealing rubber ring is filled between the tubular body and the valve stem to increase the sealing performance. The pipe clamp is connected to the outside of the tubular body, and the bolts are passed through the connecting holes and tightened with nuts to fix the main body on the valve stem. The material of the main body is hot-dip galvanized steel plate or aluminum plate, the projected radius of the rain cover is more than 2 times the radius of the circular hole of the valve stem, and the bottom edge of the main body is located on the outside of the semicircular waterstop. At this time, the gap around the valve stem is covered by the rain cover, and the rain shelter is no longer set.
[0020] Beneficial effects of the utility model:
[0021] The utility model relates to a rectangular valve well cover, which is provided with track wheels that slide on telescopic tracks. The telescopic tracks slide along fixed tracks under the support of the sliding wheels to open the covers on both sides to the greatest extent. The covers are opened by the track wheels and the sliding wheels, both of which are rolling friction. Not only can the valve well opening be maximized to ensure the maintenance operation space, but also the sliding of the track wheels on the guide rails reduces the force of manual opening and closing of the valve, so that the covers weighing hundreds of kilograms or even thousands of kilograms can be opened and closed smoothly. By providing a safety hook and a baffle, the safety hook can be lowered or retracted. When raising and lowering, the safety hook is stuck in the gap between the baffle and the side wall, and the arc-shaped body is hooked on the baffle to bear part of the weight of the cover plate, while preventing the cover plate from moving, ensuring the safety of the function. When the safety hook is retracted, it does not affect the movement of the cover plate; the closer to the water stop, the longer the limit plate above the axle, so that the cover plate forms a certain slope. When the two cover plates are closed, they are in a state of high in the middle and low on both sides, ensuring that rainwater is dispersed to both sides along the cover plate, reducing water accumulation; by providing a water stop, a rainproof shed and a rain cover, rainwater is prevented from invading the interior of the valve well. The rectangular valve well cover of the utility model solves the problems of the difficulty, bulkiness and inconvenience of opening and closing the manhole cover of concrete or masonry wells under conventional circumstances, avoids the risks of hoisting and working in the well, and reduces the investment in lifting machinery and personnel, saving costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] Figure 1 This is an overall schematic diagram of a rectangular valve well cover of the present invention.
[0023] Figure 2 This is a schematic diagram of an open rectangular valve well cover of the present invention.
[0024] Figure 3 Schematic diagram of the cover from the first perspective.
[0025] Figure 4 Schematic diagram of the cover from a second perspective.
[0026] Figure 5 A schematic diagram of the guide rail.
[0027] Figure 6 for Figure 5 Enlarged view of point A.
[0028] Figure 7 This is the plan view of the embedded plate.
[0029] Figure 8 This is a cross-sectional view of the embedded plate.
[0030] Figure 9 Schematic diagram of the telescopic track.
[0031] Figure 10 Schematic diagram of a fixed track.
[0032] Figure 11 This is a top view of a rectangular valve well cover of the present invention.
[0033] Figure 12 for Figure 11 A sectional stereoscopic view in the BB direction.
[0034] Figure 13 Schematic diagram of a valve well with a valve stem.
[0035] Figure 14 Schematic diagram of a rectangular valve well cover with a rain shield.
[0036] Figure 15 Schematic diagram of the opening of a rectangular valve well cover with a semicircular valve stem hole.
[0037] Figure 16 This is a schematic diagram of the connection between the rainproof awning and the first hook.
[0038] Figure 17 This is a diagram of the state where the middle is high and the two sides are low when the cover is closed.
[0039] Reference numerals:
[0040] 1- Valve well,
[0041] 2-cover, 201-bottom edge,
[0042] 3-track wheel, 301-roller, 302-limiting plate,
[0043] 4-well wall,
[0044] 5-guide rail, 501-embedded plate, 502-fixed rail, 5021-base, 5022-guide body, 5023-sliding wheel, 5024-first stopper, 503-telescopic rail, 5031-bottom plate, 5032-top plate, 5033-second stopper, 5034-third stopper, 504-round steel anchor bar,
[0045] 6-safety hook, 601-hook body, 602-connecting ring, 603-arc body,
[0046] 7- baffle, 8- water stop, 9- rainproof awning, 10- load-bearing steel, 11- first suspension body, 12- second suspension body, 13- hinge, 14- reinforced steel, 15- lifting ring, 16- valve stem,
[0047] 17-rain cover, 1701-main body, 1702-clamping part, 17021-pipe clamp, 17022-bolt,
[0048] 181-first retractor hook, 182-second retractor hook. DETAILED DESCRIPTION
[0049] The present invention will be described in detail below with reference to the accompanying drawings.
[0050] like Figure 1-17 As shown, the utility model provides a rectangular valve well cover, which includes a split rectangular cover plate 2 covering the wellhead of the valve well 1 and capable of opening and closing. The cover plate 2 is fixedly connected to the track wheel 3 at the bottom (that is, the track wheel 3 is rotatably installed at the bottom of the cover plate 2). A guide rail 5 fixed to the well wall 4 of the valve well 1 is provided below the track wheel 3, and the track wheel 3 slides on the guide rail 5. A safety hook 6 is provided on the bottom surface of the cover plate 2, and a baffle 7 for clamping the safety hook 6 is fixed to the inner wall of the valve well 1. A water stop 8 is provided above the cover plate 2, and a flip-up rain shelter 9 is provided above the water stop 8.
[0051] like Figure 1 、 Figure 2 As shown, there are two cover plates 2, which are arranged in a split-open arrangement. The width of the cover plates 2 is greater than the width of the valve well 1. The length of a single cover plate 2 can be, for example, 2 / 3-4 / 5 of the length of the valve well 1. The cover plates 2 are provided with a lower edge 201 in the length direction. The lower edge 201 is used to prevent rainwater from entering the valve well 1 from the gap between the cover plates 2 and the valve well 1. The two cover plates 2 are opened or closed by the sliding of the track wheels 3 on the guide rails 5.
[0052] like Figure 2 、 Figure 5 、 Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 、 Figure 10 As shown, there are two guide rails 5 and they are arranged in parallel. The guide rails 5 are fixed to the top surface of the valve well wall 4. Preferably, the guide rails 5 are arranged on the long side of the valve well wall 4. Each guide rail 5 includes an embedded plate 501 fixedly connected to the top surface of the valve well wall 4, a fixed track 502 fixed above the embedded plate 501 and a plurality of telescopic tracks 503 sliding on the fixed track 502. The bottom of the embedded plate 501 is connected to a plurality of round steel anchor bars 504. The embedded plate 501 can be, for example, a steel plate. The embedded plate 501 and the round steel anchor bars 504 are connected by perforation plug welding. The embedded plate 501 and the round steel anchor bars 504 are buried when the valve well 1 is concrete poured or masonry is laid.
[0053] like Figure 2 、 Figure 5 、 Figure 6 、 Figure 10As shown, the fixed track 502 is in an inverted T shape. The fixed track 502 includes a base 5021 connected to the embedded plate 501 and a guide body 5022 integrally formed with the base 5021. A plurality of first through holes are opened on the guide body 5022. The first through holes are arranged along the length direction of the guide body 5022. A first shaft is arranged in the first through hole. The two ends of the first shaft are respectively connected to the sliding wheel 5023. A first stopper 5024 is provided on the guide body 5022. The first stopper 5024 is arranged at a position close to the rear end of the guide body 5022. The fixed track 502 is reliably connected to the grounding grid to ensure the release of static electricity and damage caused by lightning current.
[0054] like Figure 2 、 Figure 5 、 Figure 6 、 Figure 9 As shown, there are four telescopic rails 503, and two telescopic rails 503 are slidably arranged on each fixed rail 502. Two parallel telescopic rails 503 are arranged under one cover plate 2, and the other two parallel telescopic rails 503 are arranged under the other cover plate 2. Each telescopic rail 503 includes two L-shaped bottom plates 5031 that can semi-enclose the sliding wheel 5023 and are arranged opposite to each other, and a top plate 5032 connecting the two bottom plates 5031. The distance between the two L-shaped bottom plates 5031 is slightly larger than the distance between the two coaxially connected sliding wheels 5023, for example, 1-3 mm larger. The two oppositely arranged L The bottom plate 5031 limits the telescopic guide rail 5, the sliding wheel 5023 supports the telescopic guide rail 5 to slide along the guide body 5022, and the front end of the top plate 5032 is provided with a second stop block 5033 extending into the interior of the telescopic guide rail 5. The length of the second stop block 5033 extending into the interior of the telescopic guide rail 5 is enough to make the first stop block 5024 form a block to prevent the telescopic rail 503 from sliding out of the fixed rail 502. The front and rear ends of the top plate 5032 are both provided with a third stop block 5034, which is fixed above the top plate 5032. The third stop block 5034 is used to prevent the track wheel 3 from sliding out of the telescopic rail 503.
[0055] like Figure 3 、 Figure 4 As shown, there are multiple track wheels 3, and two groups of track wheels 3 are fixed under each cover plate 2. The track wheels 3 in the same group are arranged in sequence along the length direction of the cover plate 2. For example, there can be three track wheels 3 in the same group, namely, the front track wheel, the middle track wheel and the rear track wheel. The distance between the front track wheel and the joint seam of the cover plate 2 is A, and A can be, for example, 10-15CM. The distance between the front track wheel and the middle track wheel is B, and the distance between the middle track wheel and the rear track wheel is C. A:B:C is approximately 1:6:3 to ensure the stability of the cover plate 2. The two groups of track wheels 3 are arranged in parallel and the distance between them is consistent with the distance between the guide rails 5. Each group of track wheels 3 corresponds to a telescopic rail 503.
[0056] like Figure 3 、 Figure 4 、 Figure 17 As shown, the track wheel 3 includes a roller 301 rolling along the telescopic track 503, an axle passing through the center of the roller 301 and a limit plate 302 fixedly connected to both ends of the axle. The top of the limit plate 302 is connected to the load-bearing steel 10 fixed under the cover plate 2, and the bottom end of the limit plate 302 spans the telescopic guide rail 5. The length of the roller 301 is slightly larger than the width of the telescopic track 503, for example, 3-10 mm larger. Preferably, the length of the limit plate 302 above the axle is set to L. The closer to the water stop 8, the larger the value of L, so that the cover plate 2 forms a certain slope. The joint seam of the cover plate 2 is, for example, 1% higher than the outer edge of the cover plate. When the two cover plates 2 are closed, they are in a state of high in the middle and low on both sides, ensuring that rainwater is dispersed to both sides along the cover plate 2 to reduce water accumulation.
[0057] like Figure 3 、 Figure 4 、 Figure 5 As shown, the safety hook 6 is arranged on the cover plate 2 between the load-bearing steel 10. The safety hook 6 includes a hook body 601 and a connecting ring 602 arranged at one end of the hook body 601. The end of the hook body 601 away from the connecting ring 602 forms an open arc body 603. The connecting ring 602 is connected to the first suspension body 11 fixed on the cover plate 2. The arc body 603 is overlapped on the second suspension body 12. The first suspension body 11 is a closed annular body, and the second suspension body 12 is an annular body with an opening.
[0058] like Figure 3 、 Figure 4 、 Figure 5 There are four baffles 7 shown, which are respectively arranged at the four corners of the valve well 1. The baffles 7 are fixed on the well wall 4 in the length direction of the valve well 1. The distance between the baffles 7 and the cover plate 2 is approximately equal to the length of the safety hook 6. The distance between the baffles 7 and the well wall 4 in the width direction is slightly larger than the diameter or thickness of the hook body 601, for example, 1-2 mm larger. The baffles 7 can bear the weight of the cover plate 2 without bending or deforming. When the safety hook 6 is lowered, the hook body 601 can pass through the gap between the baffle 7 and the well wall 4 and hook the arc-shaped body 603 on the baffle 7 to ensure that the cover plate is prevented from being suddenly closed due to misoperation or accidental collision after opening, thereby causing an accident. At the same time, it prevents the telescopic track 503 from being damaged or heavy objects from being placed on the cover plate by mistake, causing the telescopic track to be unable to withstand the weight of the cover plate and the heavy objects and cause overturning.
[0059] like Figure 1 、 Figure 2 As shown, the waterstop 8 is arranged on the edge of the joint of the cover plate 2. The waterstop 8 has a certain height, for example, it can be 3-10 cm, and the width of the waterstop 8 is not less than 1 cm. After the two cover plates 2 are closed, the waterstop 8 is used to prevent rainwater from entering the inside of the valve well 1 from the gap between the two cover plates 2.
[0060] like Figure 1 、 Figure 16 As shown, the rainproof canopy 9 is rotatably connected to one of the cover plates 2, for example, the rainproof canopy 9 and the cover plate 2 are connected via a hinge 13. The rainproof canopy 9 is, for example, an eight-shaped structure formed by connecting two rain shields, one of which is connected to the hinge. The angle between the two rain shields allows the rain shield to cover the water stop 8. The rainproof canopy 9 can be, for example, an L100*8 angle steel. The rainproof canopy 9 prevents rainwater from intruding. A first hook 181 is fixed to the rain shield that is not connected to the hinge 13 of the rainproof canopy 9, and a second hook 182 is fixed to the cover plate without a hinge. The first hook 181 and the second hook 182 are both L-shaped structures. The first hook 181 and the second hook 182 can be, for example, angle steel. The first hook 181 is fixed to the rain shield in an L shape, and the second hook 182 is fixed to the cover plate in an inverted L shape. The positions of the first hook 181 and the second hook 182 correspond to each other.
[0061] like Figure 1 、 Figure 2 、 Figure 3 As shown, the cover plate 2 between the load-bearing steel 10 is fixed with a reinforcement steel 14, and the top surface of the cover plate 2 is fixed with a plurality of lifting rings 15 for easy grasping. The lifting rings 15 are used to facilitate construction workers to move the cover plate 2. The material of the cover plate 2 can be, for example, a steel plate.
[0062] like Figure 13 、 Figure 14 、 Figure 15 As shown, a semicircular valve stem hole is provided on one side of the cover plate 2 for the valve stem 16 to extend out. After the two cover plates 2 are closed, the semicircular valve stem hole forms a valve stem circular hole, and a semicircular water stop 8 is provided along the edge of the semicircular valve stem hole.
[0063] like Figure 14As shown, the valve stem 16 is detachably connected to a rain cover 17, which includes a trumpet-shaped main body 1701 and a clamping portion 1702 for fixing the main body 1701 to the valve stem 16. The maximum opening of the main body 1701 is downward, and the main body 1701 is higher than the water stop 8 by, for example, 0.2-1 cm, preferably about 0.5 cm. The main body 1701 is formed by winding a rectangular plate and a trapezoidal plate, the rectangular plate is connected to the short side of the trapezoidal plate, the rectangular plate is wound to form a tubular body, and the trapezoidal winding forms a trumpet body. The clamping portion 1702 includes a U-shaped pipe clamp 17021, a connecting hole opened on the pipe clamp 17021, a bolt 17022 running through the connecting hole, and a nut used in conjunction with the bolt 17022. The pipe clamp 17021 includes an arc-shaped portion and two parallel connecting plates connected on both sides of the arc-shaped portion. The connecting holes are coaxially arranged on the connecting plates. First, the main body 1701 is formed by winding around the valve stem 16. A sealing rubber ring is filled between the tubular body and the valve stem 16 to increase the sealing. The pipe clamp 17021 is clamped on the outside of the tubular body. The bolt 17022 is passed through the connecting hole and tightened with a nut to fix the main body 1701 on the valve stem 16. The material of the main body 1701 is hot-dip galvanized steel plate or aluminum plate. The projected radius of the rain cover 17 is more than 2 times the radius of the circular hole of the valve stem, and the bottom edge of the main body 1701 is located on the outside of the semicircular water stop 8. At this time, the gap around the valve stem 16 is covered by the rain cover 17, and the rain shelter 9 is no longer provided.
[0064] The steps for using the rectangular valve manhole cover of this utility model are as follows:
[0065] When the second hook 603 is lifted, the two covers 2 are completely separated and the two covers 2 are moved to the sides. The cover 2 moves on the telescopic track 503 to open the wellhead of the valve well 1. When the track wheel 3 moves to the third stopper 5034 at the rear end of the telescopic track 503, that is, the track wheel 3 reaches the edge position of the telescopic track 503 when the telescopic track 503 is not extended, the cover 2 is driven to continue to move outward by the telescopic track 503 until the joint of the cover 2 is almost flush with the side wall of the valve well 1. The cover 2 is fully opened. At this time, the safety hook 6 under the cover 2 is lowered from the second hanging body 12 and stuck in the gap between the baffle 7 and the side wall. At the same time, the arc body 603 is hooked on the baffle 7 to prevent the cover 2 from moving. The same is true for the cover 2 on the other side.
[0066] When the cover 2 is closed, first take out the safety hooks 6 on both sides of the bottom of the cover 2 from the gap between the baffle 7 and the side wall of the valve well and hang them upward on the second suspension body 12, then push the cover 2 on both sides to move toward the middle. When the joints of the two cover 2 intersect, slowly lower the rainproof awning 9 installed on one side of the cover 2 to cover the gap, then slowly release the cover 2 on both sides so that the first hook of the rainproof awning 9 and the second hook of the cover 2 on the other side are reliably engaged. At this time, the cover 2 is closed.
[0067] The above describes preferred embodiments of the present invention. However, the above description is not intended to be limiting. Those skilled in the art may make numerous changes or modifications to the present invention without departing from the spirit and scope of the present invention. Such changes or modifications are intended to fall within the scope of the appended claims.
Claims
1. A rectangular valve well cover, characterized in that: The utility model comprises a split rectangular cover plate (2) which covers the wellhead of the valve well (1) and can be opened and closed. The cover plate (2) is fixedly connected to the track wheel (3) below. A guide rail (5) fixed to the wall (4) of the valve well is provided below the track wheel (3). The track wheel (3) slides on the guide rail (5). A safety hook (6) is provided on the bottom surface of the cover plate (2). A baffle (7) for clamping the safety hook (6) is fixed to the inner wall of the valve well (1). A water stop (8) is provided above the cover plate (2). A reversible rainproof shed (9) is provided above the water stop (8).
2. The rectangular valve well cover according to claim 1, characterized in that: There are two cover plates (2) that are arranged in a split manner. The width of the cover plates (2) is greater than the width of the valve well (1). The cover plates (2) are provided with a lower edge (201) in the length direction. The two cover plates (2) slide on the guide rail (5) via the track wheel (3).
3. The rectangular valve well cover according to claim 1 or 2, characterized in that: There are two guide rails (5) arranged in parallel. The guide rails (5) are fixed to the top surface of the well wall (4) of the valve well (1). Each guide rail (5) includes an embedded plate (501) fixedly connected to the top surface of the well wall (4) of the valve well (1), a fixed track (502) fixed above the embedded plate (501), and a plurality of telescopic tracks (503) sliding on the fixed track (502). The bottom of the embedded plate (501) is connected to a plurality of round steel anchor bars (504).
4. The rectangular valve well cover according to claim 3, characterized in that: The fixed track (502) is in an inverted T-shape. The fixed track (502) includes a base (5021) connected to the embedded plate (501) and a guide body (5022) integrally formed with the base (5021). The guide body (5022) is provided with a plurality of first through holes, the first through holes being arranged along the length direction of the guide body (5022). A first shaft is provided in the first through hole, and both ends of the first shaft are respectively connected to the sliding wheel (5023). A first stopper (5024) is provided on the guide body (5022). The fixed track (502) is reliably connected to the grounding grid.
5. The rectangular valve well cover according to claim 4, characterized in that: There are four telescopic rails (503), two telescopic rails (503) are slidably arranged on each fixed rail (502), two parallel telescopic rails (503) are arranged below one cover plate (2), and the other two parallel telescopic rails (503) are arranged below the other cover plate (2), and each telescopic rail (503) includes two L-shaped bottom plates (5031) that can semi-enclose the sliding wheel (5023) and are arranged opposite to each other, and a top plate (503) connecting the two bottom plates (5031). 2), the sliding wheel (5023) supports the telescopic guide rail (5) to slide along the guide body (5022), the front end of the top plate (5032) is provided with a second stopper (5033) extending into the interior of the telescopic guide rail (5), the length of the second stopper (5033) extending into the interior of the telescopic guide rail (5) is sufficient to enable the first stopper (5024) to form a block, the front end and the rear end of the top plate (5032) are both provided with a third stopper (5034), and the third stopper (5034) is fixed above the top plate (5032).
6. The rectangular valve well cover according to claim 5, characterized in that: There are multiple track wheels (3), and two groups of track wheels (3) are fixed below each cover plate (2). The track wheels (3) in the same group are arranged in sequence along the length direction of the cover plate (2). The two groups of track wheels (3) are arranged in parallel and the distance between them is consistent with the distance between the guide rails (5). Each group of track wheels (3) corresponds to a telescopic track (503). The track wheels (3) include a roller (301) that rolls along the telescopic track (503), a wheel shaft that passes through the center of the roller (301), and a limit plate (302) fixedly connected to both ends of the wheel shaft. The top of the limit plate (302) is connected to the bearing steel (10) fixed below the cover plate (2), and the bottom of the limit plate (302) spans the telescopic guide rail (5). The closer to the water stop (8), the longer the limit plate (302) above the wheel shaft is. When the two cover plates (2) are closed, they are in a state where the middle is high and the two sides are low.
7. The rectangular valve well cover according to claim 6, characterized in that: The safety hook (6) is arranged on the cover plate (2) between the bearing steel (10). The safety hook (6) comprises a hook body (601) and a connecting ring (602) arranged at one end of the hook body (601). The end of the hook body (601) away from the connecting ring (602) forms an open arc body (603). The connecting ring (602) is connected to a first suspension body (11) fixed on the cover plate (2). The arc body (603) is overlapped on the second suspension body (12). The first suspension body (11) is a closed annular body, and the second suspension body (12) is an annular body with an opening.
8. The rectangular valve well cover according to claim 1, characterized in that: There are four baffles (7) which are respectively arranged at the four corners of the valve well (1).
9. The rectangular valve well cover according to claim 1, characterized in that: A semicircular valve stem hole for the valve stem (16) to extend is provided on one side of the cover plates (2) being spliced. When the two cover plates (2) are closed, the semicircular valve stem hole forms a valve stem circular hole. A semicircular water stop (8) is provided along the edge of the semicircular valve stem hole.
10. The rectangular valve well cover according to claim 9, characterized in that: The valve stem (16) is detachably connected to a rain cover (17), which comprises a trumpet-shaped main body (1701) and a clamping portion (1702) for fixing the main body (1701) to the valve stem (16).