WO2006102820A1

WO2006102820A1 - A theft- and offset-proof and self-restraining manhole cover, a manhole base and a method for theft, offset-proof and self-restraining

Info

Publication number: WO2006102820A1
Application number: PCT/CN2005/002379
Authority: WO
Inventors: Yuan Zhen Huang
Original assignee: Hotto Co. Ltd.
Priority date: 2005-03-31
Filing date: 2005-12-30
Publication date: 2006-10-05

Abstract

A theft- and offset-proof and self-restraining manhole cover, a manhole base and a method for theft- and offset-proof and self-restraining. No throughholes are arranged on the surface of the cover, but only one or more blind hole(s). A hold surface for a open-close equipment is arranged on the wall of the blind hole. The blind hole is normally filled with filler. One or more downward project(s) are arranged on the perimeter of the bottom of the cover. A support ring is circularly arranged inside the base body, and at least one position block is arranged in the suitable horizontal position. A block space is formed between the position block and the radial inner side of the support ring. The processes of said method comprise: (1)Fixing the base and the base foundation together, cooperating the connect surface of the bottom of the base foundation with the counterpart of the neck portion of the manhole, coating the connect surface of the neck portion with glue, and fixing the base and the base foundation and the neck portion of the manhole together firmly. (2) Arranging a ring-like block on the inner circle of the base bottom, or arranging pawls in the suitable position of the support ring. (3) Inserting the projects downwardly arranged on the perimeter of the bottom of the cover into the counterpart position block of the base. (4) Filling in the blind holes with nonmetal filler up to the cover upper surface, and painting with antirust paint in the same color as cover surface. (5) Cleaning up the filler inside the blind holes, and opening or closing the cover only with patent open-close equipment during the maintenance.

Description

Anti-theft, anti-skip, natural suppression of manhole cover, cover seat and anti-theft anti-skip method

The invention relates to a method for preventing and preventing theft prevention of a manhole cover, a cover seat, an opening and closing device, a manhole cover and a cover seat.

Background technique

In modern construction projects, many pipelines and facilities are underground, to protect road passengers and vehicles, to reduce their interference with people's lives, and to increase the beauty of the cityscape. However, the use of any underground pipelines and facilities will inevitably require maintenance or expansion of the installation. Therefore, it is necessary to bury the manhole cover and the cover at appropriate positions to facilitate the above work. However, due to the good material quality and durability of the manhole cover and the cover seat, it is economically valuable, but because it cannot be monitored from time to time, it is one of the favorite prey of the thief.

The existing manhole covers are provided with holes or related facilities for opening the manhole cover, so as to facilitate the opening of the manhole cover, there is no suitable anti-theft method, and only the weight of the manhole cover and the cover itself is increased, and The manhole cover and the cover seat are often buried on the road foundation. If the manhole cover is suddenly stolen, the vehicle covers and crushes the manhole cover, and the manhole cover will jump off, causing the car to be destroyed. According to media reports, the fact that the manhole cover has been stolen and the person has fallen into the hole has died. Apart from severely punishing the criminals, the most fundamental way is to strengthen the anti-theft technology of the manhole cover and the cover, so that the thief can open. At the time of the manhole cover, there was no point of opening the cover of the manhole, and the intention to steal the manhole cover was lost, and the stealing action could not be completed.

The existing manhole covers are mostly installed on the roads of the vehicles. Due to the frequent traffic of the vehicles, the manhole cover jumps off the wellhead of the cover, which seriously affects the road safety. After research, the main factors are as follows:

The manhole cover placed on the roadway is crushed by the wheel, and worn and aged for a long time. After the replacement of the new manhole cover, the new manhole cover and the old cover are not formed by the same set of models, resulting in the horizontal gap between the manhole cover and the cover. Larger, uneven.

Second, the manufacture of the finished manhole cover is formed by sand mold infusion. Because the particle size of the sand cannot be consistent, the contact surface of the manhole cover and the cover cannot be leveled, and the vertical surface gap is too large.

3. During the sand mold filling process, the mold removal is improperly treated, and the manhole cover is deformed by the thermal expansion and contraction process.

4. According to the acceptance requirements, the finished product of the manhole cover is only sampled and tested, so that it is difficult to fully accept whether it meets the specification size. 5. After the construction and maintenance personnel open the manhole cover, the small stones and muds that have fallen off the top of the cover are not removed when they are restored. 6. The manhole cover is placed on the roadway. If the position is just on the route that the wheel often passes, the on-road roadway can often find two wheel tracks. After a long time, the manhole cover is under the wheel marks, and the manhole cover and the cover seat are worn. After the construction or maintenance personnel open the manhole cover, it is difficult to return to the original position when the restoration is completed, resulting in the uneven joint surface between the manhole cover and the cover seat, which causes the vehicle to jump or jump off.

There are too many cases to follow in the above-mentioned missing analysis. For example, in a car accident occurred on January 23, 1989 in Zhongxingqiao, Taipei, Taiwan, the accident was based on police investigations. The vehicle smashed the cable culvert cover on the bridge deck of the telecommunications bureau and suddenly jumped off, causing a passenger bus that followed the passage of the passenger car to crash into the wellhead of the cover, causing the entire body to fly off and press on the oncoming On the car, four passengers on the car were killed on the spot. In the same situation, in Beijing, China, in 2004, three cyclists were killed on the spot.

According to the above-mentioned accident, after the inventor's field research, he learned that the disaster occurred as follows:

According to the American Highway and Transportation Officials Association (AASHTO) traffic technology standard highway bridge design specification: the standard truck's wheelbase ^ is 4.25m, if the driving speed is 60km / hr, the manhole cover ^ is 0.676m, then the time starting point is : ∑ Ϊ dR ^ O

dR ^O

The time of the front wheel passing through the rear end R of the manhole cover to the front end F is: T f = RF /v=0.676m/(60 X lOOOOm/hr) X 60 X 60=0.04056sec

The R time of the rear wheel to the rear end of the manhole cover is: T^ = (^ -^^ )/M=(4.25m-0.676m)/(60 X l 000 _m /h _r ) X 60 X 60=0.21444sec

According to the above formula, when the vehicle does not reach the manhole cover, the manhole cover is intact, but the gap between the manhole cover and the cover seat is too large, and the vertical surface portion is uneven. Then, when the front wheel of the vehicle contacts the R point at the rear end of the manhole cover, the time is the starting point. Because the gap between the contact level is too large, and the height between the manhole cover and the cover seat is uneven, the F point of the front end of the manhole cover is lifted, and the twist is Hl. Then, when the front wheel of the vehicle reaches the front end F of the manhole cover via T^? =0.0405 _{Sec, the} front end F of the manhole cover and the cover seat have a falling distance Hl, and the first instantaneous collision effect causes the rear end R of the manhole cover to be lifted, and the height thereof is H2 is higher than the front end (H2>H1). When the front wheel of the vehicle is just about to leave the front end of the manhole cover, the HI drop distance is added when the vehicle gravity is applied to the front end of the manhole cover, and this second instantaneous collision effect causes the rear end of the manhole cover to have a higher upward distance H2. That is, the front wheel of the vehicle leaves the front end of the manhole cover, and the manhole cover becomes a seesaw action. Finally, at T = 0.214 sec, when the rear wheel of the vehicle collided with the rear end R of the manhole cover, the manhole cover was knocked out of the original position, causing a major traffic accident and jeopardizing the safety of the public.

Due to the drag force or crushing force exerted by the vehicle on the manhole cover, the power of the counterclockwise rotation of the manhole cover jumps away from the cover body, which also causes a traffic accident hazard. The process is as follows: First, due to the manhole cover and the cover seat There is a gap between them. When the front wheel of the heavy truck is pressed to one end of the manhole cover, the other end will be lifted. Then, the front wheel continues to travel. Because the wheel exerts the drag force and the pressing force on the manhole cover, the power of the manhole cover rotates counterclockwise, and the highest point of the jump is also rotated counterclockwise. When the current wheel presses the end edge of the manhole cover, the highest point of the jump moves to the right rear. At this time, the height of the lift end is beyond the road ground. After the front wheel passes, the manhole cover will continue to rotate upward due to inertia. According to the rear wheel R to the rear end of the manhole cover, the R time is T^ = 0.2 _Sec . Obviously, the rear wheel of the vehicle passing through this short time will inevitably chase the trailing edge end of the manhole cover, due to the huge impact force of the heavy truck. , so that the manhole cover after the impact is rotated to the right front to fly out, affecting road safety. It can be seen that the combination of the above-mentioned conventional manhole cover and the cover seat still has many defects, which is not a good design and needs to be improved.

In addition, in the related manhole cover and cover technology, there are many patent pre-plans designed to prevent the cover or cover from being stolen, such as Taiwan Patent Notice No. 481704, No. 427374 and Certificate No. M240035, M244316. No. is a typical representative; there are also a number of pre-patent cases designed to prevent the cover from jumping off the cover, such as Taiwan Patent Notice No. 211835, No. 160395, No. 195309 and No. 491310, China Patent 20042006158.1 and so on are their typical representatives. However, the manhole cover and the cover seat of these cases have structural design defects. The most obvious shortcoming is that the double function of the cover cover and the cover seat against the jump and the anti-theft can not be achieved at the same time, and it is necessary to improve it.

Summary of the invention

The object of the present invention is to provide an anti-theft and anti-skip natural suppression well cover and an anti-theft and anti-skip method, which can enable a thief to insert or hook a hole on a surface of a manhole cover by using a common tool when using a manhole cover. In turn, it is impossible to find any point of force to open the manhole cover, so that the manhole cover has the function of never being stolen, thereby ensuring road safety and avoiding danger.

Another object of the present invention is to provide an anti-theft, anti-skid, natural suppression manhole cover, a cover seat and an anti-theft anti-bounce method, which utilizes more than one downward vertical body at the edge of the manhole cover, and the insertion cover seat is hooped by the corresponding positioning hoop. , so that the manhole cover and the cover seat form a proper gap to form a unitary structure, so that the manhole cover cannot escape.

Another object of the present invention is to provide an anti-theft and anti-skip natural suppression well cover and anti-theft method, which has the functions of anti-theft and anti-skip, and solves the anti-theft, anti-skip, anti-displacement, anti-fall, anti-noise, anti-skid The problem of preventing the entire seat from sinking under the ground to maintain traffic and avoid accidents.

In order to achieve the above object, the present invention adopts the following technical solutions:

The anti-theft and anti-skip natural suppression manhole cover is characterized in that: there is no through hole on the surface of the manhole cover, only More than one blind hole having a clamping surface of the opening and closing device, the blind hole being normally closed by the filler; and one or more vertical bodies facing downward at the bottom edge of the well cover.

The holding surface of the blind hole wall is a vertical surface or an inclined surface toward the bottom of the hole.

The holding surface in the blind hole is located on the most proximal side of the centripetal end or the farthest side of the centrifugal end.

The shape of the vertical body is a flat shape of a geometric shape of a triangle, a rectangle, a trapezoid, a u-shape, or any combination of the above-mentioned geometric flat bodies, and the vertical body is perpendicular to the surface of the manhole cover at 90 degrees or inclined to the left and right. When the cover seat is inserted corresponding to the positioning brace, the gap can be opened on both sides of the vertical body.

The blind hole has a shape of one of a trapezoidal shape, a circular shape, a rectangular shape, a triangular shape, a polygonal shape, or a circular shape.

The blind hole is a blind hole facing down the well cover, and the shape of the blind hole is one of a trapezoidal shape, a circular shape, a rectangular shape, a triangular shape, a polygonal shape or a circular shape. The blind hole is filled with a non-metal filler, and the surface of the cover hole is coated with A layer of non-metallic anti-corrosion mixture.

The anti-theft anti-bounce natural restraint cover is characterized in that: the inner ring of the cover seat is distributed with a support ring and at least one positioning brace disposed at an appropriate horizontal position, the positioning brace and the inner end edge of the support ring Form a brace space.

The positioning brace is in the shape of a claw or a ring. The positioning brace is disposed above or below the support surface of the support ring or at a suitable position from the inner edge of the support ring; positioning hoop and support A ring space is formed between the inner diameter edges of the ring, and the exhaust hole is disposed on the cover.

The well cover opening and closing device is characterized in that it comprises a clamp, wherein the clamp comprises:

a clamp wire sleeve;

a clamp screw, the clamp screw is disposed in the clamp sleeve;

a clamp ring handle, the clamp ring handle is coupled to the upper end of the clamp screw;

a jaw bracket, the jaw bracket is connected under the clamp screw sleeve;

At least one jaw, the upper and lower ends of the jaw are respectively pivotally connected to the clamp sleeve and the jaw bracket.

The lower end of the above jaw has an inner hook head having an inner gripping surface.

The lower end of the jaw is an outer hook head having an outer clamping surface, and the upper end of the jaw is hinged to the sleeve via a tie rod.

The lower end holding surface of the above jaw is provided with a non-slip groove or a rough surface.

The profile of the wire sleeve of the clamp may be a petal-shaped petal, or may be circular, rectangular or other irregular shapes, and the cross-sectional shape may be an oblong shape, a rectangular shape or the like.

The shape of the jaw bracket may be a curved triangle, or may be circular, square, polygonal or other shapes, and the cross-sectional shape may be a long circular ring or a rectangular shape and other shapes.

The outer shape of the jaw may be a curved hook or a flat hook and other shapes, and the cross-sectional shape may be an oblong shape, a rectangular shape or the like, and the contact surface of the jaw may be The means for increasing the friction can be used, such as anti-slip or rough-faced claws, which are tapered or diamond-shaped and pointed.

The manufacturing material of the manhole cover opening and closing device is made of metal material or high-strength non-metal material.

The above-mentioned manhole opening and closing device and the clamp can be coupled to a hanger, the hanger comprising:

a hanger wire sleeve;

a hanger screw, the hanger screw is disposed in the hanger wire sleeve;

a hanger ring handle, the hanger handle of the hanger is coupled to the upper end of the hanger screw, and is interchangeable with the clamp ring handle;

a hanger leg, at least one or more legs, the top of the leg being pivotally connected to the hanger sleeve;

A bottom end of a hanger screw is provided with a hook connecting the clamps.

Wherein the bottom of the leg is pivotally connected to the frame. The frame is a link mechanism, like the rib structure of a folded umbrella.

The bottom end of the leg is pivotally connected with a universal roller or a ball.

The invention discloses an anti-theft and anti-skip method for naturally suppressing a manhole cover and a cover seat, characterized in that the method steps are as follows:

(1) The cover seat and the base body of the cover base are fixedly connected, and the lower joint surface of the base body of the cover base corresponds to the concave surface of the neck joint surface of the well structure body, and the adhesive surface is applied on the joint surface of the neck structure of the well structure body, The cover base and the cover base body are tightly connected with the wellbore neck structure body to form an integral structure;

(2), a ring-shaped positioning brace is arranged at the bottom of the inner ring of the cover seat or a claw-shaped positioning brace is arranged at an appropriate position of the support ring;

(3), the vertical body of the bottom edge of the bottom cover of the manhole cover is sleeved into the corresponding positioning collar of the cover seat;

(4) Fill the blind hole in the manhole cover with a non-metallic filler, fill it with the upper surface of the manhole cover, and apply the same anti-rust paint as the face of the manhole cover;

(5) When the worker is repairing, remove the filler in the blind hole and clamp the blind hole with the patent opening and closing device to open and close the manhole cover. The advantages of the invention are:

1. The cover has anti-theft function: the cover does not open the force point, and the corresponding cover has the positioning hoop to prevent the cover from jumping. Only the special opening and closing tool is used to vertically or vertically to the vertical body corresponding to the cover down. It can be opened under the condition of tilting to the right, so the thief cannot open at all.

2. The use of the manhole cover is highly safe: fill the blind hole with non-metal filler, fill it with the plane above the manhole cover, and apply the same anti-rust paint as the face of the manhole cover. It is difficult for the thief to find the opening point and prevent it. The cover is stolen.

DRAWINGS

1A is a perspective view of a blind hole in a well cover and a cover surface of the present invention;

Figure 1B is a cross-sectional view of the blind hole on the manhole cover and cover surface of the present invention.

2A is a perspective view of a front surface of a well cover according to a first embodiment of the present invention;

2B is a perspective view of the reverse side of the manhole cover of the first embodiment of the present invention.

3A is a perspective view of a front surface of a well cover according to a second embodiment of the present invention;

Figure 3B is a perspective view of the reverse side of the manhole cover of the second embodiment of the present invention.

4A is a perspective view of a front surface of a well cover according to a third embodiment of the present invention;

4B is a perspective view of the reverse side of the manhole cover of the third embodiment of the present invention.

5A is a perspective view of a front surface of a well cover according to a fourth embodiment of the present invention;

Figure 5B is a perspective view of the reverse side of the manhole cover of the fourth embodiment of the present invention.

Figure 5C is a perspective view of a cover of a well cover in accordance with a fourth embodiment of the present invention.

Figure 6A is a perspective view of a well cover in accordance with a fifth embodiment of the present invention.

Figure 6B is a perspective view of a cover seat of a well cover in accordance with a fifth embodiment of the present invention.

Figure 7A is a perspective view of a well cover according to a sixth embodiment of the present invention (a state diagram of a mixture unfilled with high compressive structural strength); Figure 7B is a cross-sectional view of a well cover of a sixth embodiment of the present invention.

Fig. 7C is a perspective view of a well cover according to a sixth embodiment of the present invention (state diagram after filling a mixture of high compressive structural strength); Fig. 7D is a cross-sectional view of Fig. 7C.

Figure 8 is a perspective view of a well cover according to a seventh embodiment of the present invention

8A is a perspective view of a cover seat of a well cover according to a seventh embodiment of the present invention.

Figure 9 is a top plan view of a well cover according to an eighth embodiment of the present invention;

Figure 9B is a bottom plan view of the well cover of the eighth embodiment of the present invention;

Figure 9C is a cross-sectional view of Figure 9A; Figure 10 is a partially enlarged cross-sectional view of Figure 9C.

Figure 11A is a cross-sectional view showing the structure of the assembly of the manhole cover and the cover seat of the present invention (first embodiment);

Figure 11B is a cross-sectional view showing the structure of the assembly of the manhole cover and the cover seat of the present invention (second embodiment);

Figure 11C is a schematic diagram of the actuation of Figures 11A and 11B.

12A to 12E are schematic views showing various geometric shapes of the blind hole of the well cover of the present invention.

13A to 13D are schematic views showing various structures of a vertical body cross section of the manhole cover facing downward according to the present invention.

Figure is a perspective view showing the combination of the manhole cover and the cover seat of the present invention.

Figure 15 is a schematic view showing the clamp of the present invention of the mantle cover opening and closing device of the present invention.

Figure 16 is a schematic view showing the manhole cover opening and closing device of the present invention opening the manhole cover of the present invention.

Figure 17 is a schematic view of the manhole cover opening and closing device of the present invention for holding the manhole cover of the present invention by a hanger and a clamp.

18 is a schematic structural view of Embodiment 1 of the well cover opening and closing device of the present invention.

Figure 19 is a plan view of Figure 18;

Figure 20 is a bottom view of Figure 18.

21 is a schematic structural view of a second embodiment of the well cover opening and closing device of the present invention.

detailed description

Referring to FIG. 1A, FIG. 1B and FIG. 2A to FIG. 2B, a first embodiment of the anti-theft and anti-skip natural suppression well cover of the present invention comprises a manhole cover 1 having no through holes on the surface thereof, and only a plurality of blinds are provided. The hole 11 has a clamping surface 111 and a bottom surface 112 of the opening and closing device. The holding surface 111 of the blind hole wall is a vertical surface or an inclined surface toward the bottom of the hole, and the holding surface in the blind hole is located on the farthest side of the centripetal end or the farthest side of the centrifugal end. The holding surface 111 is preferably a vertical surface. In a preferred embodiment, the holding surface 111 is preferably inclined at an angle and has an angle of inclination of α inward or outward, if necessary. A sliding surface such as a rough surface or a concave-convex surface is further added to the vertical surface or the inclined surface, so that the clamping force is better for the clamping force, that is, the holding surface 111 can be provided with a rough surface or a concave surface. The anti-slip means, in order to facilitate the clamping of the clamping force, so the α angle of the aforementioned clamping surface 111 is not absolutely necessary in practice, and can be selected according to actual needs; the bottom surface 112 is combined with The body of the manhole cover 1 is such that the blind hole 11 does not penetrate the body thickness of the manhole cover 1, and the blind hole is an unobstructed space between the clamping surface 111 and the bottom surface 112, that is, there is no other obstacle on the blind hole. member. The blind hole 11 may have a plurality of opening geometries such as a trapezoidal shape, a circular shape, a rectangular shape, a triangular shape or a polygonal shape as shown in Figs. 12A to 12E. This safe and practical natural suppression manhole cover has reformed the practice of hooking the manhole cover to open it, eliminating the disadvantage that the manhole cover is easy to be stolen and easy to jump off. The front of the manhole cover has several blind holes that need to be lifted vertically. Generally, the hooks, steel bars and steel wires cannot be suspended and will slip off. After the installation, the blind hole 11 is filled with other fillers such as sealant, and the filler is mixed with the same color anti-rust mixture as the manhole cover, so that the filler is solidified and the same color as the manhole cover, or the manhole cover is coated with non-metal anti-corrosion. The mixture layer is not easily distinguishable from the manhole cover 1 in appearance, so as to reduce the chance of theft. Even if the thief finds a strange shape of the filler, it takes some time to clear the filler, and a patented manhole cover opening device (shown in Figure 16) is required to balance the vertical lift under balanced conditions, otherwise it cannot be opened. Manhole cover. The venting holes can be changed to the cover so that there are no through holes on the surface of the manhole cover. In this way, it is not easy for the thief to find the blind hole position of the manhole cover from the appearance. The thief does not know how to lift the hanging tool for theft. The general tool can not steal the manhole cover or the cover seat. There is no point of opening and lifting, it has natural restraint, strengthens the card-inforce, can't even lift the crane, and can't jump off the ground. The manhole cover and the cover can't be stolen.

As shown in FIG. 1A, FIG. 2B, FIG. 3Α, FIG. 4Α, FIG. 5Α, FIG. 6Α, FIG. 7Α, FIG. 8Α, the bottom surface of the manhole cover 1 has a plurality of downward vertical bodies 12 near the edge, and the downward vertical body 12 is used for inserting a positioning collar 21 embedded in a cover 2 (as shown in FIG. 11A and FIG. 11B), and a clearance space is left between each of the downwardly facing vertical bodies 12 to prevent the well cover 1 During work The staff's feet are crushed so that the staff can concentrate on their work. Positioning the manhole cover 1 in the cover seat ² , thereby forming a sloped third side, such that the third side is larger than the diameter of the cover seat, naturally inhibiting the cover cover from jumping, although suppressing the cover cover jumping, plus the inside of the well seat Positioning the force of the retaining band to increase the clamping force, the downwardly extending member with the face of the manhole cover is absolutely unable to jump and jump. At the edge of the manhole cover, a notch for reinforcing the clamping force can be opened on both sides of the vertical body. ³ . Referring to FIG. 6A, the outer cover of the support surface of the cover seat is more hooped during use. The structure has the functions of anti-theft, anti-skip, anti-displacement, anti-falling, anti-noise, anti-slip, anti-sliding seat to the ground, to maintain traffic, avoid accidents, etc., and also suppress the pressing of the manhole cover when the vehicle advances. Force and drag force, avoid accidents in which the manhole cover rotates and jump out of the road.

Referring to FIG. 11A, FIG. 11A, and FIG. 11C together, the vertices B of the vertical body 12 and the front end R (or the rear end F) of the manhole cover 1 form a slanted third side "^ (or ^) according to Bi's theorem. Theory:

RB

―

Therefore, when the front wheel of the vehicle is pressed to the R end, the length of the downwardly extending member 12 prefabricated in the manhole cover 1 is suppressed by the cover 2, and the manhole cover 1 is naturally inhibited from jumping off the cover.

As shown in Figs. 13A to 13D, the shape of the downward vertical body 12 may be selected from a triangular shape, a rectangular shape, a trapezoidal shape, a U shape, or any combination of the above various vertical shapes, or a flat body of other geometric shapes.

Referring to FIG. 3A and FIG. 3B, a second embodiment of the cover anti-theft and anti-skip device of the present invention is different from the first embodiment in that the vertical body of the second embodiment is flat with a notch 121. Body, the two are the same.

4A and 4B are perspective views of a well cover according to a third embodiment of the present invention. The vertical body of the manhole cover facing downward is composed of two or more vertical bodies, and is inserted into the same cover space 211 of the corresponding cover seat (at the same time). See Figure 5C).

Covers the fourth embodiment of the present invention is similar to the third embodiment, except for the body vertical downward covers a notched flat body 121 (see also FIGS. ⁵ A to FIG. ⁵ B).

Referring to Figures 6A and 6B, a fifth embodiment of the manhole cover of the present invention has a recess between the edge of the manhole cover and the downwardly facing vertical body to enclose the positioning brace of the corresponding cover seat on the support ring.

Referring to FIG. 7A to FIG. 7D, the manhole cover of the present embodiment includes a manhole cover 1 with a manhole cover edge and a vertical body 12 facing downward, and the manhole cover 1 is provided with a blind hole 11 and a blind hole. It can fill the mixture of high compressive structural strength to increase the difficulty of stolen and maintain the smoothness of the road surface. There is a gripping surface 111 in the blind hole. In other embodiments, the gripping surface 111 is located at a different orientation of the manhole cover 1. The gripping surface 111 can be vertically taken out by the operation of the hanger 4 and the clamp 3 in a balanced manner. The shape of the blind hole may be a circular, rectangular, triangular, polygonal or toroidal bump. Clamp the gripping surface 1 11 with the clamp when opening.

Referring to Figure 8, the manhole cover of the seventh embodiment of the manhole cover of the present invention may also have a vertical body tilted slightly to the left or right with an appropriate amount to cover the corresponding cover retainer space 211 (shown in Figure 8A).

The eighth embodiment of the manhole cover of the present invention is shown in Figs. 9A and 9B, and the back of the manhole cover is provided with reinforcing ribs 82 (see Fig. 9C, Fig. 10 is a partially enlarged cross-sectional view of Fig. 9C).

Referring to FIG. 5C, 6B, and 8A, the anti-theft anti-bounce natural restraint cover 2 of the present invention has a ring shape, and a plurality of bolt holes 22 are distributed along the circumference of a cover base 24 on the outer side, and the inner ring of the seat is distributed. The support ring 23 protrudes horizontally from the inner wall of the well cover 2 . At least one positioning brace 21 disposed at a proper horizontal position of the ring in the seat body forms a brace space 211 between the positioning brace and the inner diameter end edge of the support ring. The positioning brace 21 is in the shape of a claw or a ring. The positioning brace is disposed above or below the support surface of the support ring or at a suitable position from the inner edge of the support ring; the positioning brace and the support ring The inner diameter edges form a brace space between each other. The cover seat may also be provided with a venting opening 27. In addition, the cover base 24 of the cover 2 has an outer diameter larger than that of the seat body, and is provided with a plurality of penetration grooves 25 for injecting metal such as reinforced concrete or non-compressive high strength. The mixture is embedded and integrated into the manhole cover 2, and The seat cover 24 connected to the chassis between the two base body covers several reinforcing ribs ^26, the reinforcing rib 26 is provided with perforations 261, the perforations 261 may further such reinforcement drilled, shown in Figure 5C; and, the present The shape of the cover 2 and the manhole cover 1 may also be circular, square, rectangular or other geometric shapes.

Fig. 14 is a schematic view showing the combination of the manhole cover and the cover seat of the present invention in use, and Fig. 15 is a schematic view showing the clamp clamp cover. Referring to FIG. 16 and FIG. 17, the manhole cover 1 of the present invention is positioned on the cover base 2, and the cover base 2 is fixed by bolts 22 around the cover seat to form a cover base 5, the cover base 2 and the cover base. 5 other layers of reinforced concrete 51 or steel fiber mixture are pre-cast together, and the base 5 of the cover is four-folded with the neck of the wellbore and coated with adhesive at the gap joint 52. Complete combination. The manhole cover 1 is taken up by a clamp 3 and clamped on the clamping surface 1 of the blind hole 11 of the manhole cover 1. When the weight of the manhole cover is less than 60 kg, the manhole cover can be easily lifted by the hand clamp; when the weight of the manhole cover is 60 When the kg is more than one kilogram, use a hanger to lift the clamp. The clamp 3 is disposed at the bottom end of a hanger 4, and the operation of the hanger 4 and the clamp 3 can vertically remove the manhole cover 1 in a balanced manner.

Referring to Figures 15-20, a special well cover opening and closing device of the present invention is a clamp, the clamp comprising:

a clamp wire sleeve 33; a clamp screw 32, the clamp screw is disposed in the clamp wire sleeve; a clamp eye handle 31, the clamp eye handle is coupled to the upper end of the clamp screw; a jaw holder 35, the jaw holder is connected under the clamp screw sleeve; at least one jaw 34, the upper and lower ends of the jaw are respectively pivotally connected to the clamp sleeve and the jaw bracket.

Referring to FIG. 17, a special well cover opening and closing device of the present invention is a clamp and a hanger coupled to the clamp, the hanger includes: a hanger wire sleeve; a hanger screw, the hanger screw system Provided in the hanger wire sleeve; a hanger ring handle, the hanger ring handle of the hanger is coupled to the upper end of the hanger screw, and is interchangeable with the clamp ring handle; a hanger leg, at least one or more a leg, the top of the leg is pivotally connected to the hanger sleeve; a bottom end of the hanger screw is provided with a hook connecting the clamp. Wherein the bottom of the leg is pivotally connected to the frame. The frame is a link mechanism, like the rib structure of a folded umbrella. The bottom end of the leg is pivotally connected with a universal roller or a ball.

Referring to Figures 18, 19 and 20, the first embodiment of the manhole cover opening and closing device of the present invention has an inner hook head having an inner clamping surface applied to the manhole cover having a blind hole in the inner clamping surface. The clamp 3 includes a lifting ring handle (also a clamp handle) 31, a clamping screw 32, a clamping jaw 35 and a jaw 34. The lifting handle 31 is coupled to the top end of the clamping screw 32 for The clamp screw 32 is driven. The upper portion of the clamp screw 32 is bolted to a clamp sleeve 33, and the lower end is provided with an abutment 38. The top end of the clamp 34 and the bottom of the clamp sleeve 33 The bottom end is pivotally connected to the jaw bracket 35, and the abutment 38 of the lower end of the clamp screw 32 is embedded in a ring groove of the jaw bracket 35. The structure of the above-mentioned jaws 34 may also be one jaw or three jaws, four jaws or five jaws or more jaw jaws, and the jaws 34 may be distributed symmetrically or may be Asymmetrical distribution. In a preferred embodiment, the contact surface of the jaws 34 with the manhole cover 1 may be provided without the need to increase the friction of the contact surface, such as a non-slip groove or a rough surface.

Referring to Fig. 21, the second embodiment of the manhole cover opening and closing device of the present invention has an outer hook head having an outer clamping surface applied to the lower end of the jaw, and is applied to the manhole cover having the blind hole of the outer clamping surface. In the second embodiment, the principle of the lever and the screw boosting mechanism are adopted. The lifting handle 31, the lead screw 32, the wire sleeve 33, the connecting pin 37, the jaw holder 35, the pull rod 36 and the jaw 34 are included. The upper end of the jaw 34 is hinged to the sleeve 33 via a tie rod 36. The screw is made of trapezoidal rib or ordinary rib. The material of the jaw is made of a variety of alloying elements, low carbon alloy steel, forged by a forging machine or by a precision casting machine. The screw is processed by a medium carbon alloy steel through a forging machine. Made of, the lifting handle is made of low carbon alloy steel welded.

Working principle: Align the jaws of the opening and closing device with the blind hole 1 of the manhole cover, lift the handle, and pull the cymbal through the lead screw and the screw sleeve to make the jaw move outwards and close contact with the blind hole of the well cover to generate positive pressure friction. Force) to achieve the opening and closing of the manhole cover. The above-mentioned embodiments are not intended to limit the scope of the invention, and the equivalents and modifications of the invention are intended to be included in the scope of the invention.

Claims

1. An anti-theft and anti-skip natural suppression manhole cover, characterized in that: there is no through hole on the surface of the manhole cover, and only one or more blind holes are provided, and the blind hole hole wall has a clamping surface of the opening and closing device, and a blind hole Usually closed by the filling; the bottom edge of the manhole cover is provided with one or more vertical bodies facing downwards.

2. The anti-theft and anti-skip natural suppression manhole cover according to claim 1, wherein: the blind surface of the blind hole wall is a vertical surface or an inclined surface to the bottom of the hole.

3. The anti-theft anti-skip natural suppression manhole cover according to claim 1, wherein: the clamping surface in the blind hole is located on the nearest side of the centripetal end or the farthest side of the centrifugal end.

4. The anti-theft anti-bounce natural suppression manhole cover according to claim 1, wherein: the vertical body has a triangular shape, a rectangular shape, a trapezoidal shape, a U-shaped flat shape, or the geometric shape is flat. Any combination of the body, the vertical body is 90 degrees perpendicular to the surface of the manhole cover or inclined to the left and right. When the cover seat is inserted corresponding to the positioning brace, the vertical body can also be opened with a gap.

The anti-theft anti-ballout natural suppression manhole cover according to claim 1, wherein the blind hole has a shape of one of a trapezoidal shape, a circular shape, a rectangular shape, a triangular shape, a polygonal shape, or a circular shape.

6. The anti-theft anti-skip natural suppression manhole cover according to claim 1, wherein: the blind hole is a blind hole facing down the well cover, and the shape of the blind hole is trapezoidal, circular, rectangular, triangular, polygonal or One of the circular rings, the blind hole is filled with a non-metal filler, and the surface of the manhole cover is coated with a non-metallic anti-corrosion mixture layer.

7. An anti-theft anti-skip natural suppression cover, characterized in that: the inner ring of the cover seat is provided with a support ring and at least one positioning brace disposed at an appropriate horizontal position, the positioning brace and the inner diameter end of the support ring A space is formed between the edges.

The anti-theft anti-bounce natural suppression cover according to claim 6, wherein: the positioning brace is in the shape of a claw or a ring, and the positioning brace is disposed above the support surface of the support ring or The lower or bottom proper position or directly extends from the inner edge of the support ring; the positioning collar and the inner diameter end edge of the support ring form a brace space, and the exhaust hole is disposed on the cover.

9. A well cover opening and closing device, comprising: a clamp, wherein the clamp comprises: a clamp wire sleeve;

a clamp screw, the clamp screw is disposed in the clamp sleeve;

a jaw bracket, the jaw bracket is connected under the clamp screw sleeve;

At least one jaw, the upper and lower ends of the jaw are respectively pivotally connected to the clamp sleeve and the jaw bracket. .

10. The manhole cover opening and closing device according to claim 9, wherein the lower end of the jaw is an inner hook head having an inner holding surface. -

11. The well cover opening and closing device according to claim 9, wherein: the lower end of the jaw is an outer hook head having an outer clamping surface, and the upper end of the jaw is hinged to the sleeve via a tie rod.

The well cover opening and closing device according to claim 10 or 11, wherein the lower end holding surface of the jaw is provided with a non-slip groove or a rough surface. . The well cover opening and closing device according to claim 10 or 11, wherein the outer shape of the wire sleeve of the clamp may be a petal-shaped petal shape, or may be a circular shape, a rectangular shape and other irregular shapes. The shape can be oblong, rectangular or other shapes.

The well cover opening and closing device according to claim 10 or 11, wherein the outer shape of the jaw bracket may be a curved triangle, or may be a circle, a square, a polygon, or the like, and the sectional shape may be Long rings can also be rectangular and other shapes.

The well cover opening and closing device according to claim 10 or 11, wherein the outer shape of the jaws may be a curved hook shape or a flat hook shape and other shapes, and the cross-sectional shape may be an oblong shape. It can also be rectangular and other shapes. The contact surface of the 1⁄4 claw can be provided with any means for increasing its friction, such as anti-slip or rough-faced claws. The shape of the claws is tapered or diamond-shaped and pointed. .

The manhole cover opening and closing device according to claim 10 or 11, wherein the mandrel opening and closing device is made of a metal material or a high-strength non-metal material.

17. The manhole cover opening and closing device according to claim 9, wherein: a hanger is coupled to the clamp, the hanger comprising:

a hanger wire sleeve;

a hanger screw, the hanger screw is disposed in the hanger wire sleeve;

A bottom end of a hanger screw is provided with a hook connecting the clamps.

Wherein the bottom of the leg is pivotally connected to the frame.

The frame is a link mechanism, like the rib structure of a folded umbrella.

18. An anti-theft and anti-skip method for naturally suppressing a manhole cover and a cover seat, characterized in that the method steps are as follows:

(4) Filling the blind hole or blind hole in the manhole cover with non-metal filler, filling it with the upper surface of the manhole cover, and applying the anti-rust paint of the same color as the well cover surface;

(5) When the worker is repairing, the filler in the blind hole is removed, and the blind hole is clamped by the patent opening and closing device to open and close the manhole cover.