CN2173278Y - Theft-proof well cover - Google Patents

Abstract

The utility model relates to a well cover, comprising a cover body. The center of the cover body is provided with a switching hole, and a pipe plug is screwed in the switching hole; the bottom of the cover body is provided with a theft-proof device which comprises a switching shaft whose upper end extends in the switching hole and lower end is sheathed with a push-pull plate. The both ends of the push-pull plate are attached with push-pull rods, and the other end of each of the push-pull rods is attached with a baffle plate which can extend into the lower side at the bottom of a well mouth. The middle of the baffle plate is inserted with a supporting rod whose upper end is fixed in the cover body. The well cover can be disassembled by a special tool which is matched with the well cover, so the well cover is theft-proof. The utility model not only protects state owned property, but also ensures the life safety of pedestrians.

Description

Theft-proof well cover

The utility model relates to the ground well lid, is applicable to the manhole shaft mouth of underground construction.

At present, ground well lid in urban water supply, the drainage system, the manhole shaft lid of underground power cable and communication cable mostly is cylinder iron to cast to form, and covers on the ground well head, because of no anti-theft device, well lid stolen phenomenon in ground happens occasionally, and this not only causes damage to national wealth, influences urban construction, and every year all the someone fall into ground well tumble injury and disable or get killed, the people's life security is caused serious threat.

The purpose of this utility model is the antitheft ground well lid of a kind of energy of design.

This antitheft ground well lid comprises lid, in the centre of lid one switch hole is arranged, be connected with plug in the switch hole, plug is provided with pipe plug opening, anti-theft device is housed below lid, anti-theft device comprises that the upper end bit strip has switch pin and is inserted in the interior switch shaft of switch hole, the lower end part of switch shaft is set with draw back plate, the two ends of draw back plate are mounted with pull bar respectively, the other end of these two pull bars is mounted with the baffle plate that can stretch to below, well head bottom surface, ground respectively, this two its centre position is fitted with support bar respectively, and the upper end of this two support bar is fixed in the lid.

This ground well lid is placed in ground when aboveground, make the outer end of baffle plate stretch to the below of well head bottom surface, ground, when operation in ground well or remove contamination when need taking out the ground well lid, use earlier plug to be covered from ground well and back out with the supporting special tool of this ground well lid, block position, switch shaft upper end with this special tool again, the rotating switch axle, the draw back plate that is fixed on the switch shaft also rotates thereupon, the rotation of draw back plate drives pull bar baffle plate is drawn out to the ground well inner chamber below the bottom surface of ground well head, could take out the ground well lid.Must use special tool owing to get the ground well lid, and this special tool is taken care of by authorities, thereby made the safe handling of ground well lid that guarantee arranged, prevent the generation of stolen phenomenon, protected state owned property and pedestrian's life security.

For strengthening anti-theft effect, anti-theft device also is included in switch shaft and is set with end face is fixed on shell on the lid on a section between lid and the draw back plate, the bottom surface of this shell is provided with the alignment pin that stretches out to inner chamber, in this inner chamber, be provided with socket from bottom to top and be fixed on the arresting disc on the switch shaft and be sleeved on spring on the switch shaft, have the locating hole that alignment pin is injected on the arresting disc.When taking out the ground well lid, earlier with the supporting special tool plug of back-outing, block on the position, upper end of switch shaft with this special tool again and carry, make locating hole disengaging alignment pin, again by above-mentioned way can take off well lid.The effect of spring is for alignment pin is inserted in the locating hole easily and reliably.

Accompanying drawing shows the embodiment of antitheft ground well lid, wherein Fig. 1 is the front view of embodiment, Fig. 2 is the state diagram of switch shaft each parts when being raised, Fig. 3 is a draw back plate, pull bar, the location diagram of baffle plate when locking states, Fig. 4 is draw back plate, pull bar, the location diagram of baffle plate when opening, and Fig. 5 is the vertical view of embodiment.

In the present embodiment, antitheft ground well lid comprises lid 1, one switch hole 13 is arranged in the centre of lid 1, be connected with plug 14 in the switch hole 13, plug 14 is provided with pipe plug opening 16, pipe plug opening 16 is a triangle, below lid 1, anti-theft device is housed, anti-theft device comprises that the upper end bit strip has switch pin 15 and is inserted in switch shaft 2 in the switch hole 13, the lower end part of switch shaft 2 is set with draw back plate 7 and fixing by nut 19, the two ends of draw back plate 7 are mounted with pull bar 8 respectively, the other end of these two pull bars 8 is mounted with the baffle plate 9 that can stretch to below, well head 12 bottom surfaces, ground respectively, the centre of this two baffle plate 9 is fitted with support bar 10 respectively, support bar 10 lower ends are fixed on the baffle plate 9 by latch 18, the upper end spins and is fixed in the lid 1, on one section between lid 1 and the draw back plate 7, be set with end face at switch shaft 2 and be fixed on shell 11 on the lid 1, the bottom surface 4 of this shell 11 is provided with the alignment pin 5 that stretches out to inner chamber, in this inner chamber, be provided with socket from bottom to top and be fixed on the arresting disc 3 on the switch shaft 2 and be sleeved on spring 6 on the switch shaft 2, have the locating hole 17 that alignment pin 5 is injected on the arresting disc 3.

Claims (3)

1, a kind of antitheft ground well lid, comprise lid (1), it is characterized in that a switch hole (13) being arranged in the centre of lid (1), be connected with plug (14) in the switch hole (13), plug (14) is provided with pipe plug opening (16), anti-theft device is equipped with in below at lid (1), anti-theft device comprises that the upper end bit strip has switch pin (15) and is inserted in the interior switch shaft (2) of switch hole (13), the lower end part of switch shaft (2) is set with draw back plate (7), the two ends of draw back plate (7) are mounted with pull bar (8) respectively, the other end of these two pull bars (8) is mounted with the baffle plate (9) that can stretch to below, well head (12) bottom surface, ground respectively, the centre of this two baffle plate (9) is fitted with support bar (10) respectively, and the upper end of this two support bar (10) is fixed in the lid (1).

2, according to the said antitheft ground of claim 1 well lid, it is characterized in that anti-theft device also is included in switch shaft (2) and is positioned at and is set with end face between lid (1) and the draw back plate (7) one section and is fixed on shell (11) on the lid (1), the bottom surface (4) of this shell (11) is provided with the alignment pin (5) that stretches out to inner chamber, in this inner chamber, be provided with socket from bottom to top and be fixed on the arresting disc (3) on the switch shaft (2) and be sleeved on spring (6) on the switch shaft (2), have the locating hole (17) that alignment pin (5) is injected on the arresting disc (3).

3,, it is characterized in that pipe plug opening (16) is a triangle according to the said antitheft ground of claim 1 well lid.

Images