CN2228949Y

CN2228949Y - Thfetproof lock and key for manhole cover and gutter inlet grate

Info

Publication number: CN2228949Y
Application number: CN 95207130
Authority: CN
Inventors: 厚长明
Original assignee: Individual
Current assignee: Individual
Priority date: 1995-04-03
Filing date: 1995-04-03
Publication date: 1996-06-12
Anticipated expiration: 2005-04-03

Abstract

The utility model relates to a theftproof lock and an unlocking key for a manhole cover and a water grate, which is suitable for being arranged on various manhole covers and water grates and belongs to the municipal field. The utility model is composed of a connecting plate, a pin axle, a lock and an unlocking key. Major components like the connecting plate and the pin axle, etc. are connected with each other. The lock is composed of an elastic support which hangs parallelly below the well cover. The unlocking key is correspondingly provided with a hydraulic jack, and an unlocking head is in the unlocking key. When the lock is unlocked, the pressure which is produced by the unlocking key is used for unlocking the lock, and the manhole cover and the water grate can only be lifted when the pressure for opening keeps unchanged. The lock of the utility model has the advantages of simple structure and reliable motion. The requirement of the lock unlocking is only realized by using special tools, so theft can be prevented effectively.

Description

A kind of ground well lid water operator theftproof lock and unlatching key

The utility model relates to a kind of ground and lid, the theftproof lock of water operator, and it is a kind of various ground well lid that is applicable to, the theftproof lock of using on the rainwater operator belongs to the municipal engineering field.

At present for the ground well lid, water operator antitheft, what generally take is to be replaced with the substitute that intensity difference and the also not low nonmetals of cost are made, or connects a kind of anti-stealing manhole cover that the well seat is together changed.Thereby increased the use of workload and a large amount of money boxes greatly, and the well lid that changes, the water operator can't utilize again, has caused great waste.

The purpose of this utility model is to overcome above-mentioned shortcoming, provides a kind of simple in structure, and cost is low, the anti-easily money of unlatching is locked and open key, can be installed at common well lid easily, on the water operator, thereby plays antitheft effect.

The utility model is by following theftproof lock and open the key realization.

It is made up of a kind of theftproof lock following structure: connecting two junction plates below the well lid that is provided with the center slotted hole on the relevant position respectively, again with identical angle outward-dipping after respectively with its under the resiliency supported of being longer than the well lid diameter dimension on both sides link to each other, make resiliency supported parallel be suspended in well lid below, its part that protrudes in the well lid outer may be stuck in the base of well seat and pins down well lid, exerts pressure in the middle of resiliency supported when making it crooked when the head of opening key passes well lid center slotted hole; Below inside under the restriction of junction plate, move; When giving prominence to part under the well lid outer when all being retracted in the well lid outer, keep the constant right side, situation below of its opening pressure to carry and open well lid, otherwise advance resiliency supported and automatically restore to the home position rapidly together what opening pressure disappeared.

Realize the unlatching key of such scheme, it is characterized in that: by carrying handle, in the framework that the unlatching head of layback plate and bottom is formed an inverted hydraulic jack, its top cap embeds on cylindrical the unlatchings head that napex is corresponding to be advanced in the groove, the groove that one big sub-well lid thickness is arranged in the outside of opening head, what its groove was following is the conical nose that the cross section is long cast, but there is a feed flow to press the freely through hole of jack push rod in opening head, slotted hole in opening its corresponding well lid of head insertion is to the draw-in groove place, the key half-twist is stuck draw-in groove and well lid, at this moment starting hydraulic jack makes push rod exert pressure by opening the resiliency supported of head below well lid, open when requiring when reaching, keep its pressure utilization carrying handle on the key to carry and open well lid, inverse operation order and action can be dialled down and be opened key during by unlatching.

Hydraulic jack according to opening the work of being inverted described in the key scheme is characterized in that; Connect the root of an oil pipe at the inlet port place of its hydraulic planger pump, the hydraulic planger pump inlet port when work after the inversion is remained on below the pasta to the top cap.

The utility model is a kind of any common well lid that is installed at, theftproof lock on the water operator, its reliable in action simple in structure, low, the easy processing of cost, easy installation etc., can be on its open method be difficult to realize for self strength and with general tool with the people, only being used in the special opening key of making under the processing of a locking equipment and technology can open easily, strengthens to well lid the antitheft effect of water operator thereby played.Below in conjunction with accompanying drawing this practicality is newly moulded and to be described in detail

Fig. 1 is the ground well lid, the view of water operator theftproof lock

Fig. 2 is the circle of analysing and observe of Fig. 1, A-A portion

Fig. 3 is a view of opening key with Fig. 1 accordingly

Fig. 4 is the sectional view of Fig. 3 A-A portion

According to the theftproof lock shown in Fig. 1,2, its resiliency supported 3 be one with elasticity good steel plate or steel rod, the ㄩ shape that is bent into according to resilient support, flexural strength is between 50kg～2000kg, its outside, bottom straight-line dimension maximum must not be greater than the caliber size of well head, two walls outwards had the inclination of certain angle since eight jiao of place respectively when both sides were upturned, and were stuck in the effect requirement under the edge at the bottom of the well seat to satisfy greater than well head.Except that above bending, also can guarantee under the good situation of its crosspiece elasticity the manufacturing of processes such as riveted joint in the welding of its eight jiao punishment section.A pedestal 4 is located to burn-on respectively for eight jiao in the both sides of the resiliency supported 3 after its processing.Between the both sides at well lid 1 center are with two pedestals on less than resiliency supported apart from making a call to a hole respectively on 2 of size or utilizing the pedestal 6 that has the boomerang bolt on the air vent on the former well lid with Luo female 5 fixing afterbodys separately, the back is female by loosening for preventing Luo, can rivet its mother Luo after installation is errorless.Can be as the new system well lid at the pedestal of its corresponding position direct pouring one in bottom.After above structure is finished, junction plate 2 in order to the length of needs, between resiliency supported and well lid, be connected with pivot pin 7, use cottor pin 8 pinning pivot pins again, structure after the connection is that two junction plates 2 under the well lid 1 are that splayed is sagging to link to each other with resiliency supported 3, make the resiliency supported 3 horizontal belows that are suspended on well lid, the end nipple that its both sides are upturned is stuck at the bottom of the well seat along the lining for the well lid edge, structure after the combination is that well lid is by locking states, when forcing its resiliency supported 3 to be bent downwardly from unlatching pressure on the key, because the change of air line distance makes the part of junction plate 2 and resiliency supported perk, simultaneously to square on the lower side also Gansu Province, the center of well lid, to giving prominence to when the part total movement beyond the well lid is in the edge, realized the unlatching requirement of lock, but can carry in the time of must keeping its opening pressure constant and open well lid this moment, otherwise can automatically restore to locking states under the rebound effect of resiliency supported.For the needs of opening, be provided with at the well lid center one with open the corresponding slotted hole 9 of key.

According to the unlatching key shown in Fig. 3,4 by carrying handle 11, layback plate 12, open in the framework that Combination Welding such as 13 become, plating advance one through connect in the inlet port 16 at plunger displacement pump 15 one at the bottom of the cap of top along under oil pipe 17 repackings after the hydraulic jack 14 used of inversion, the folder portion 18 of its top cap embeds in the columniform unlatching its corresponding groove in 13 tops 19, makes a call to a blind hole 20 and put screw thread and the hole usefulness Luo silk 21 that establish in the place at carrying handle center is fixed on the base of hydraulic jack.In an outside of opening 13 groove 22 greater than well lid thickness is arranged, but open in 13 in have a feed flow to press the freely through hole 23 of jack push rod, slotted hole (Fig. 1) 9 during use in opening head 24 its corresponding well lids of insertion is to the place, upper edge of groove, the whole half-twist of key is stuck under the hole in the well lid bottom of opening the groove 22 on the head, at this moment method of operating routinely starts the hydraulic jack that is upside down on the key, push rod is exerted pressure by the resiliency supported of hole below well lid of opening in the head, when arriving requiring of opening, keep its pressure, utilization carrying handle 11 is on the key upwards carried and is opened well lid.Opposite operation in tandem can be pulled up and be opened key and rise when opening.

Also can be installed on the inlet for stom water operator with identical making, installation and using method, according to same antitheft effect is arranged.

Claims

1, a kind of ground well lid, water operator theftproof lock, it is characterized in that: below the well lid that is provided with the center slotted hole (1), connecting two junction plates (2) on the relevant position respectively, again with identical angle outward-dipping after respectively with its under the resiliency supported of being longer than the well lid diameter dimension (3) on both sides link to each other, make resiliency supported 3 parallel be suspended in well lid below, its part that protrudes in the well lid outer may be stuck in the base of well seat and pins well lid down.

2, a kind of ground according to claim 1 well lid, water operator theftproof lock is characterized in that: resiliency supported (3) is a support made from good steel plate of elasticity or steel rod.

3, a kind of unlatching key that uses the described scheme of claim 1, it is characterized in that: plating an inverted hydraulic jack (14) in the framework of forming by the unlatching head (13) of carrying handle (11) layback plate (12) and bottom, its top cap (18) embeds in its corresponding groove of a cylindrical unlatching upper top (19), in the outside of opening head one groove greater than well lid thickness (22) is arranged, its groove is that the cross section is oblong conical nose (24) when following, but in opening head in have a feed flow to press the freely through hole of jack bar (23).

4, unlatching key according to claim 3, it is characterized in that: an inverted hydraulic jack (14) locates to connect the root of an oil pipe (17) to the top cap at the inlet port (16) of its hydraulic column device pump, and the hydraulic planger pump inlet port when work after the inversion is remained on below the pasta.