CN204825992U - Protection type safety well lid - Google Patents

Abstract

The utility model discloses a protective safety manhole cover, which comprises a base (1), a main cover (2) and a pinch plate (3). The base (1) is installed on the wellhead main cover (2) and the pinch plate (3) integrated and connected with the inner ring of the base (1); the base (1) includes a retaining ring (11), and the retaining ring (11) is provided with a recess (111) for the passage of the pinch plate (3); the main The outer diameter of the cover (2) and the gusset (3) are larger than the inner diameter of the retaining ring (11), the main cover (2) above the retaining ring (11) and the gusset below the retaining ring (11) (3) Connect with the base (1) through the retaining ring (11). In the utility model, the base (1), the main cover (2) and the buckle plate (3) are connected into one body, which effectively prevents the loss of the main cover (2) due to water erosion or theft, and reduces the safety of passing pedestrians and vehicles when driving. Hidden danger.

Description

A protective safety manhole cover

technical field

The utility model relates to the field of municipal engineering facilities, in particular to a protective safety manhole cover.

Background technique

The manhole cover is a closure located on the top of the entrance and exit of underground facilities. Municipal projects such as tap water, telecommunications, electricity, gas, heat, fire protection, and sanitation all involve manhole covers. With the rapid development of my country's economy, my country's infrastructure construction has ushered in a new cycle, and the market demand for manhole covers in urban planning and road construction is huge.

The traditional manhole cover is directly buckled into the base by the main cover. The main cover is easily lost due to being washed away by water flow or stolen. , The vehicle caused damage. In recent years, there have been reports of injuries to passing pedestrians and vehicles due to the lack of the main cover of the manhole cover.

Utility model content

The purpose of this utility model is to provide a protective safety manhole cover. After the installation is completed, the base, the main cover and the gusset are connected as a whole, and the main cover and the gusset are fixed by the retaining ring on the base to prevent their It is separated from the base, effectively preventing the loss of the main cover due to water erosion or theft, and reducing the safety hazards of passing pedestrians and vehicles.

The utility model is realized through the following technical solutions: a protective safety manhole cover, including a base, a main cover and a pinch plate, the base is installed on the wellhead, the main cover is connected with the pinch plate and connected with the inner ring of the base; the base includes Retaining ring, the retaining ring is provided with a recess that only passes through the buckle plate; the outer diameter of the main cover and the outer diameter of the gusset plate are larger than the inner diameter of the retaining ring, the main cover above the retaining ring and the buckle below the retaining ring The plate is connected to the base through a retaining ring.

In the utility model, the main cover and the gusset plate are connected to each other and connected to the base as a whole through the retaining ring arranged on the inner ring of the base. Special tools are required to disassemble it, which can effectively reduce the loss of the main cover due to factors such as external rain erosion, excessive internal pressure of the well, and human theft, and reduce the safety hazards of passing pedestrians and vehicles.

During installation, the main cover is first fixedly connected with the gusset plate, and then the gusset plate is passed through and rotated through the recess provided on the retaining ring, so that the retaining ring is located in the gap formed by the main cover and the gusset plate. At this point, the main cover is above the retaining ring and the gusset is below the retaining ring. On the one hand, the main cover and gusset are usually made of metal or high-strength fiber cement concrete, etc., and their own weight is relatively large; can only be removed within a certain range. Therefore, loss of the main cover can be effectively avoided.

After the installation of the safety manhole cover is completed: under normal circumstances, the bottom surface of the main cover is in contact with the top surface of the retaining ring, and the retaining ring mainly bears the self-weight of the main cover and the buckle plate and the external force from top to bottom; when the internal pressure of the well is large , the main cover and the gusset plate float up as a whole, and the top surface of the gusset plate is in contact with the bottom surface of the retaining ring, and the retaining ring mainly bears the force exerted by the internal pressure on the gusset plate.

Further, the main cover is provided with a countersunk hole, and the buckle plate is provided with a through hole corresponding to the position of the countersunk hole, and the countersunk bolt passes through the countersunk hole, the through hole and the nut in turn to be screwed.

In the utility model, the main cover and the buckle plate are fixedly connected by means of countersunk head bolts and nuts, the connection state is stable, and the connection operation is simple. After the countersunk bolts are installed, no protrusions will be formed on the top surface of the main cover to cause potential safety hazards.

Further, the countersunk bolts are square bolts connected in turn by square screw heads, square connecting columns and cylindrical screws; the nuts are round nuts screwed on the cylindrical screws; the countersunk holes, through holes and The square bolts are correspondingly connected, and their cross sections are all square; the square screw head is located in the countersunk hole, and the square connecting column is connected with the countersunk hole and the through hole at the same time.

The main cover and the gusset plate are fixedly connected by square bolts, which is convenient for judging the rotation angle during installation or disassembly.

Further, a cotter pin is also included, and the cotter pin is located under the round nut and passes through the pin hole provided on the cylindrical screw transversely.

The cotter pin is used to prevent the round nut from getting loose.

Further, the buckle plate is provided with a boss, and the top surface of the boss is in contact with the bottom surface of the main cover.

The top surface of the boss is in contact with the bottom surface of the main cover, so that the main cover and the gusset just form a space connected with the retaining ring at the edge, on the one hand, the connection between the main cover and the gusset can be made more stable, and on the other hand, it is convenient Installation of safety manhole covers.

Further, the main cover is provided with installation holes.

The installation hole is used to cooperate with special tools to install or remove the main cover. The number of the mounting holes is at least one set, and one set of mounting holes includes two mounting sub-holes arranged symmetrically along the axis of the main cover. The number of effective mounting holes of the utility model is two groups, and the two groups of mounting holes are arranged in a "ten" shape, which is convenient for applying force.

Further, the pinch plate is provided with ventilation holes corresponding to the positions of the mounting holes.

The arrangement of the ventilation holes is convenient for pressure relief and ventilation inside the shaft or discharge of accumulated water on the road.

Further, the top surface of the base is provided with a first positioning mark, and the top surface of the main cover is provided with a second positioning mark.

The first positioning mark and the second positioning mark are used as a reference for the rotation angle when the main cover is installed.

Further, the top surface of the base and the top surface of the main cover are located in the same plane.

The top surface of the base and the top surface of the main cover are located in the same plane, so that the entire safety manhole cover is flush with the road surface after installation, ensuring the safety of personnel and vehicles.

Compared with the prior art, the utility model has the following advantages and beneficial effects:

(1) In the utility model, the base, the main cover and the buckle plate are assembled into one body, and special tools are needed for installation or disassembly, so as to effectively prevent the main cover from the base;

(2) In the utility model, the main cover and the pinch plate are fixedly connected by connecting square bolts and round nuts. On the one hand, the main cover and pinch plate cannot be rotated relative to each other after being connected by square bolts; Twist to increase the difficulty of theft, which is beneficial to anti-theft.

Description of drawings

Fig. 1 is an exploded diagram of the utility model.

Fig. 2 is a schematic diagram of the structure of the utility model when it is in use.

Fig. 3 is a structural schematic diagram of the base.

Fig. 4 is a structural schematic diagram of the main cover.

Fig. 5 is a structural schematic diagram of the pinch plate.

Fig. 6 is a structural schematic diagram of a square bolt.

Fig. 7 is a structural schematic diagram of a cotter pin.

Among them: 1—base, 11—retaining ring, 111—recess, 12—first positioning mark, 2—main cover, 21—counterbore hole, 22—second positioning mark, 23—installation hole, 3—gusset plate, 31—through hole, 32—boss, 33—ventilation hole, 4—square bolt, 41—square screw head, 42—square connecting column, 43—cylindrical screw, 44—pin hole, 5—round nut, 6— cotter pin.

Detailed ways

The utility model will be further described in detail below in conjunction with the examples, but the implementation of the utility model is not limited thereto.

Example 1:

A protective safety manhole cover of this embodiment, as shown in Figure 1 and Figure 2, is mainly realized through the following technical solutions: it includes a base 1, a main cover 2 and a gusset 3, and the base 1 is installed on the wellhead main cover 2 and The gusset 3 is connected as a whole and connected with the inner ring of the base 1; as shown in Figure 3, the base 1 includes a retaining ring 11, and the retaining ring 11 is provided with a recess 111 for the passage of the gusset 3 only; the main cover The outer diameter of 2 and the outer diameter of gusset 3 are larger than the inner diameter of retaining ring 11, and the main cover 2 above retaining ring 11 and gusset 3 below retaining ring 11 are connected to base 1 through retaining ring 11.

Example 2:

This embodiment is further optimized on the basis of the above embodiments, and further includes countersunk bolts and nuts; The plate 3 is provided with a through hole 31 corresponding to the position of the countersunk hole 21, and the countersunk bolt passes through the countersunk hole 21, the through hole 31 and is screwed with the nut in turn. Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Example 3:

This embodiment is further optimized on the basis of the above embodiments, as shown in Figure 6, further, the countersunk bolts are square bolts 4 connected in sequence by a square screw head 41, a square connecting column 42, and a cylindrical screw rod 43; Described nut is the round nut 5 that is screwed on the cylindrical screw rod 43; Described countersunk hole 21, through hole 31 are correspondingly connected with square bolt 4, and its cross section is all square; Described square screw head 41 is positioned at countersunk hole 21 , the square connecting column 42 is connected with the counterbore 21 and the through hole 31 at the same time. Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Example 4:

This embodiment is further optimized on the basis of the above embodiments, as shown in Figure 2 and Figure 7, and further includes a cotter pin 6, the cotter pin 6 is located below the round nut 5 and transversely passes through the cylindrical screw 43 44 on the pin hole. Other parts of this embodiment are the same as those of the foregoing embodiments, so details are not repeated here.

Example 5:

This embodiment is further optimized on the basis of any one of embodiments 1-4. As shown in FIG. 4 , the main cover 2 is provided with an installation hole 23 . Other parts of this embodiment are the same as any one of Embodiments 1-4, so details are not repeated here.

Embodiment 6:

This embodiment is further optimized on the basis of any one of Embodiments 1-5. As shown in FIG. 5 , the pinch plate 3 is provided with a boss 32 , and the top surface of the boss 32 is in contact with the bottom surface of the main cover 2 . Ventilation holes 33 corresponding to the positions of the mounting holes 23 are provided on the buckle plate 3 . Other parts of this embodiment are the same as those of any one of Embodiments 1-5, so they will not be repeated here.

Embodiment 7:

As shown in Figure 1 and Figure 2, a protective safety manhole cover includes a base 1, a main cover 2, a buckle plate 3, a square bolt 4, a round nut 5 and a cotter pin 6, and the base 1 is installed on the wellhead main cover 2 and the buckle The plate 3 is connected in one piece and connected with the inner ring of the base 1 . As shown in FIG. 3 , the base 1 includes a retaining ring 11 arranged on the inner ring and a first positioning mark 12 arranged on the top surface. The retaining ring 11 is provided with a concave portion 111 for only the pinch plate 3 to pass through. The outer diameter of the main cover 2 and the outer diameter of the buckle plate 3 are larger than the inner diameter of the retaining ring 11, the main cover 2 above the retaining ring 11 and the buckle plate 3 below the retaining ring 11 are connected to the base 1 through the retaining ring 11 . As shown in FIG. 4 , the main cover 2 is provided with a counterbore 21 , a second positioning mark 22 and a mounting hole 23 . The first positioning mark 12 is matched with the second positioning mark 22 . As shown in FIG. 5 , the pinch plate 3 is provided with a through hole 31 , a boss 32 and an air vent. The top surface of the boss 32 is in contact with the bottom surface of the main cover 2 . As shown in Figure 6, described square bolt 4 comprises square screw head 41, square connecting post 42, cylindrical screw rod 43 and the pin hole 44 that is arranged on the cylindrical screw rod 43, square screw head 41, square connecting post 42, post Shaped screw rod 43 is connected successively. The square bolt 4 passes through the counterbore 21 and the through hole 31 to connect with the round nut 5 in sequence. The square screw head 41 is located in the counterbore 21 , the square connecting column 42 is respectively connected with the counterbore 21 and the through hole 31 , and the cylindrical screw 43 extends out of the through hole 31 to connect with the round nut 5 . The cotter pin 6 is arranged under the round nut 5 and passes through the pin hole 44 transversely. The top surface of the base 1 and the top surface of the main cover 2 are located in the same plane.

Embodiment 8:

This embodiment is based on any one of Embodiments 1-7. After the main cover 2 is fixedly connected to the pinch plate 3, first align the pinch plate 3 with the recess 111 on the retaining ring 11. At this time, the first positioning mark 12 is aligned with the second The included angle of the positioning mark 22 is close to a right angle; then the gusset 3 is passed through the recess 111 and rotated in a single direction until the angle between the first positioning mark 12 and the second positioning mark 22 is close to a zero angle, then the gusset 3 rotates approximately Over 90°, at this time the main cover 2 and the pinch plate 3 are stably connected to the base 1 through the retaining ring 11 . Other parts of this embodiment are the same as those of any one of Embodiments 1-7, so details are not repeated here.

The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form. Any simple modification or equivalent change made to the above embodiments according to the technical essence of the utility model falls within the scope of the present utility model. Within the protection scope of the present utility model.

Claims (9)

1. A protective safety manhole cover, characterized in that it includes a base (1), a main cover (2) and a gusset (3), and the base (1) is installed on the wellhead main cover (2) and connected with the gusset (3) integrated and connected with the inner ring of the base (1); the base (1) includes a retaining ring (11), and the retaining ring (11) is provided with a recess (111) for the passage of the pinch plate (3); the The outer diameter of the main cover (2) and the outer diameter of the pinch plate (3) are larger than the inner diameter of the retaining ring (11), the main cover (2) above the retaining ring (11) and the buckle below the retaining ring (11) The plate (3) is connected with the base (1) through the retaining ring (11). 2. A protective safety manhole cover according to claim 1, characterized in that: it also includes countersunk bolts and nuts; the main cover (2) is provided with countersunk holes (21), and the buckle plate (3) A through hole (31) corresponding to the position of the countersunk hole (21) is arranged on the top, and the countersunk bolt passes through the countersunk hole (21), the through hole (31) and the nut in turn to be screwed. 3. A protective safety manhole cover according to claim 2, characterized in that: the countersunk bolt is a square screw head (41), a square connecting column (42), and a cylindrical screw rod (43) connected in sequence. bolt (4); the nut is a round nut (5) screwed on the cylindrical screw (43); the countersunk hole (21), the through hole (31) and the square bolt (4) are connected correspondingly, and the The cross sections are all square; the square screw head (41) is located in the counterbore (21), and the square connecting column (42) is connected with the counterbore (21) and the through hole (31) at the same time. 4. A protective safety manhole cover according to claim 3, characterized in that: it also includes a cotter pin (6), the cotter pin (6) is located under the round nut (5) and transversely passes through the cylindrical screw pin hole (44) on (43). 5. A protective safety manhole cover according to claim 1, characterized in that: the buckle plate (3) is provided with a boss (32), the top surface of the boss (32) and the main cover (2) Bottom contact. 6. A protective safety manhole cover according to claim 1, characterized in that: the main cover (2) is provided with an installation hole (23). 7. The protective safety manhole cover according to claim 6, characterized in that: the gusset plate (3) is provided with a ventilation hole (33) corresponding to the position of the installation hole (23). 8. A protective safety manhole cover according to any one of claims 1-7, characterized in that: the top surface of the base (1) is provided with a first positioning mark (12), and the main cover (2) The top surface is provided with a second positioning mark (22). 9. A protective safety manhole cover according to any one of claims 1-7, characterized in that: the top surface of the base (1) and the top surface of the main cover (2) are located in the same plane.