CN103015425A

CN103015425A - Engineering emergency hydraulic lifting gravity drop hammer for concrete construction of underground engineering

Info

Publication number: CN103015425A
Application number: CN2012105187706A
Authority: CN
Inventors: 范斌; 周铭谦
Original assignee: SHANGHAI FOUNDATION ENGINEERING Co Ltd
Current assignee: SHANGHAI FOUNDATION ENGINEERING Co Ltd
Priority date: 2012-12-06
Filing date: 2012-12-06
Publication date: 2013-04-03
Anticipated expiration: 2032-12-06
Also published as: CN103015425B

Abstract

The invention relates to an engineering emergency hydraulic lifting gravity drop hammer for concrete construction of underground engineering. The upper part of a pile cap is fixedly connected with a pile frame, the side surface of the pile frame is slidingly connected with a landing gear by a guide rail, the landing gear is connected with a bottom plate of the pile frame by a hydraulic cylinder and a hydraulic cylinder support seat, the inside of the pile frame is provided with an impact hammer, the upper part of the impact hammer is in contact with a hook of the landing gear, the side surfaces of the pile frame are provided with an upper lifting plate and a lower limiting plate, the two sides of the back surface of a landing gear seat are respectively provided with a guide rail seat, the middle part of the back surface of the landing gear seat is provided with the hook and a rotary shaft, the hook is connected with the rotary shaft by a connecting rod, the rotary shaft is provided with a shift fork, an upper backer and a lower backer are arranged at the upper position and the lower position of the rotary shaft respectively, and the lower part of the rotary shaft is provided with an oil cylinder connecting seat. The landing gear is driven to lift through the extending and shrinkage of the hydraulic cylinder to realize the lifting and lowering of the impact hammer, the adhering surface between the pile pipe and concrete or clay is loosened by impact, the pressure and the friction force are reduced, the locking is avoided, and then the jacking and drawing of fore shaft pipes and the planting of pipes are safely realized.

Description

The emergent hydraulic pressure lift of engineering is from dropping hammer when being used for the underground construction concrete construction

Technical field

The disposal plant of abnormal situation when the present invention relates to concrete construction in a kind of underground construction, the emergent hydraulic pressure lift of especially a kind of engineering is from dropping hammer.

Background technology

During the construction of the concrete continuous wall working system of underground infrastructure, need divide the groove section to carry out the grooving operation according to technological requirement, the intersegmental connection of conventional groove divides rigidity and tenderness to connect first two, generally all will use locking notch pipe the end face of box cut section is carried out moulding and protection.

Adopt the continuous wall groove segment of locking notch pipe technique grooving, when treating that concrete reaches the initial set state, just need to begin to pull in order locking notch pipe with the hydraulic pressure machine of pulling, prevent the appearance of the concrete setting locking phenomenon that locking notch pipe is built in the groove section.

Locking notch pipe works safely that pull out must be according to the concrete initial set situation, get hold of loosening and pulls opportunity and the blanking time of locking notch pipe, makes locking notch pipe and the concrete that constantly solidifies is in the disengaging situation all the time, so just can guarantee final safe the pulling out of locking notch pipe.

But can incur loss through delay the time of pulling out for various reasons in practice of construction, perhaps concrete actual setting rate is faster than theoretical velocity, the situation that the power that pulls increases severely occurs, even locking notch pipe embraced the jail by concrete 360o, namely around filling with phenomenon, causes finally pulling unsuccessfully.

When top lift sharp increase situation occurring, at present the scene is mainly hung and use diesel hammer, the equipment of grade that the drops hammer locking notch pipe of thumping, and the destruction concrete condenses fully on its surface, avoids final locking.But soldier piles, lifting are very inconvenient, even equipment may occur and put in place the time, locking notch pipe is locking.

In addition, when planting the pipe operation, soil pressure can occur and suddenly increase the situation that can't press down.The pile pipe if can thump this moment is shaken the face that sticks together of loose earth and pile pipe, just can reduce earth to the frictional force of the soil pressure generation of pile pipe, thus the downforce when having reduced laying pipes work.

In view of above-mentioned situation frequently occurring in the construction, therefore be necessary to invent a kind of equipment easy to use, when increasing severely, can shake pressure the face that sticks together between loose pile pipe and concrete or the earth, reduce pressure and frictional force, avoid locking.

Summary of the invention

The present invention be to provide a kind of during for the underground construction concrete construction the emergent hydraulic pressure lift of engineering from dropping hammer, be used for shaking the face that sticks together between loose pile pipe and concrete or the earth, reduce pressure and frictional force, avoid locking phenomenon, thereby safety pulls locking notch pipe or plants the pipe operation.

For achieving the above object, the present invention adopts following technical scheme: a kind of during for the underground construction concrete construction the emergent hydraulic pressure lift of engineering from dropping hammer, comprise hydraulic cylinder, percussion hammer, undercarriage, pile frame, pile cover, be characterized in: be fixedly connected with pile frame above the pile cover, the pile frame side is by the guide rail undercarriage that is slidingly connected, undercarriage is connected with the pile frame base plate by hydraulic cylinder and hydraulic cylinder bearing, percussion hammer is housed in the pile frame, percussion hammer top contacts with the hook of undercarriage, and the pile frame side is provided with upper and lower spacing plate.

Undercarriage comprises the stand that rises and falls, track base, hook, connecting rod, turning cylinder, fork, upper and lower backer, rising and falling, both sides are respectively equipped with track base on the stand back side, be provided with hook and turning cylinder in the middle of the top, the hook with turning cylinder between be connected by connecting rod, fork is housed on the turning cylinder, the turning cylinder upper and lower is set up upper and lower backer is housed respectively, and the stand lower backside of rising and falling is provided with the oil cylinder Connection Block.

Be provided with rubber damper between hydraulic cylinder bearing and the pile frame base plate.

The invention has the beneficial effects as follows:

The present invention is by the undercarriage of pile frame side, undercarriage is connected with the pile frame base plate by hydraulic cylinder and hydraulic cylinder bearing, percussion hammer top is connected with the hook of undercarriage, can realize the face that sticks together between the loose pile pipe of shake and concrete or the earth, reduce pressure and frictional force, avoid locking phenomenon, thereby safety pulls locking notch pipe or plants the pipe operation.

The present invention and diesel hammer, the equipment such as drop hammer are compared lighter weight just, and lifting easily; Use more convenient, as long as on-the-spot have the hydraulic pressure pump truck to get final product work.Therefore the scene that is adapted at is used as case of emergency and is disposed.

Description of drawings

Fig. 1 is structural representation of the present invention;

Fig. 2 is the landing gear structure schematic diagram;

Fig. 3 is the right view of Fig. 2;

Fig. 4 is the ram structure schematic diagram;

Fig. 5 to Fig. 9 is operating position of the present invention schematic diagram.

The specific embodiment

The invention will be further described below in conjunction with accompanying drawing and embodiment

As shown in Figure 1, of the present invention during for the underground construction concrete construction the emergent hydraulic pressure lift of engineering comprise hydraulic cylinder 4, percussion hammer 3, undercarriage 2, pile frame 7, pile cover 8, block 1, hydraulic cylinder bearing 5 etc. from dropping hammer.

Be fixedly connected with pile frame 7 above the pile cover 8, percussion hammer 3 is housed in the pile frame 7, pile frame 7 heads are equipped with block 1.Connect locking notch pipe 9 below the pile cover 1.

Pile frame 7 sides are by guide rail 20 undercarriage 2 that is slidingly connected, and undercarriage 2 is connected with pile frame 7 base plates by hydraulic cylinder 4 and hydraulic cylinder bearing 5, and percussion hammer 3 tops are connected with the hook 12 of undercarriage 2.Be provided with rubber damper 6 between hydraulic cylinder bearing 5 and pile frame 7 base plates.Pile frame 7 side guides 20 are provided with upper and lower spacing plate 10,11.

Such as Fig. 2, shown in 3, undercarriage 2 comprises the stand 21 that rises and falls, track base 19, hook 12, connecting rod 13, turning cylinder 15, fork 16, upper and

lower backer

14,17, both sides are respectively equipped with track base 19 on 21 back sides of undercarriage, be provided with hook 12 and power transmission shaft 15 in the middle of the top, be in transmission connection by connecting rod 13 between hook 12 and the turning cylinder 15, fork 16 is housed on the turning cylinder 15, turning cylinder 16 upper and lower are set up upper and lower backer 14 are housed respectively, 17, stand 21 lower backside of rising and falling are provided with oil cylinder Connection Block 18.

With hydraulic cylinder jack-up percussion hammer, to a certain highly automated release, allow percussion hammer clash into locking notch pipe, the impact force of generation can be destroyed concrete and condense fully on its surface, avoids final locking.

Design parameters is as follows:

As shown in Figure 4, percussion hammer 3 quality are 3800kg, and release altitude is about 1100mm, can produce the approximately momentum of 17.6kNs, and impact force is 176kN(17.6tft approximately), full weight 12t.

The hydraulic cylinder 4 cylinder diameter 90mm of the machine, stroke 1200mm, the flow 94l/min of the pump truck that mainly uses with the scene calculates, and pushes away about 4.9s of time on that, and operating frequency is 10 times/min approximately.

Workflow is as follows: (referring to Fig. 5 to Fig. 9)

(1) start bit, hydraulic cylinder 4 pistons are reduced to the end, and this moment, turning cylinder 15 leaned against upper limit plate 10, and hook 12 is in push mode (Fig. 5).

(2) hydraulic cylinder 4 pistons stretch out, and promote undercarriage 2 and rise, and push away percussion hammer 3 on the hook 12, until shift fork 16 contact upper limit plates 10, after this shift fork 16 will rotate (Fig. 6).

(3) shift peak (phase linkage) onto in the continuation, this moment connecting rod 13 with turning cylinder 15 in line (Fig. 7), upwards push away again and will under the Gravitative Loads of percussion hammer 3, drivening rod mechanism rotate, this moment, undercarriage 2 still can rise, and percussion hammer 3 begins voluntarily landing (Fig. 7).

(4) shift terminal point on onto and discharge from dropping hammer (signal), this position is at position 3(Fig. 7) to continue rising a bit of, and drivening rod mechanism rotates under the Gravitative Loads of percussion hammer 3, and turning cylinder 15 leans against lower backer 17 places, voluntarily landing of percussion hammer 3 (Fig. 8).

(5) hydraulic cylinder 4 is retracted, and undercarriage 2 descends, and during to shift fork 16 contact lower limiting board 11, drivening rod mechanism upwards rotates, and makes hook 12 automatically in running order, such as position 1(Fig. 9)

Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.

Claims

1. the emergent hydraulic pressure lift of engineering when being used for the underground construction concrete construction is from dropping hammer, comprise hydraulic cylinder (4), percussion hammer (3), undercarriage (2), pile frame (7), pile cover (8), it is characterized in that: be fixedly connected with pile frame (7) above the described pile cover (8), pile frame (7) side is by guide rail (20) undercarriage (2) that is slidingly connected, undercarriage (2) is connected with pile frame (7) base plate by hydraulic cylinder (4) and hydraulic cylinder bearing (5), percussion hammer (3) is housed in the pile frame (7), percussion hammer (3) top contacts with the hook (12) of undercarriage (2), pile frame (7) side is provided with, lower limiting board (10,11).

According to claim 1 during for the underground construction concrete construction the emergent hydraulic pressure lift of engineering from dropping hammer, it is characterized in that: described undercarriage (2) comprises the stand that rises and falls (21), track base (19), hook (12), connecting rod (13), turning cylinder (15), fork (16), on, lower backer (14,17), rising and falling, both sides are respectively equipped with track base (19) on stand (21) back side, be provided with hook (12) and turning cylinder (15) in the middle of the top, be connected by connecting rod (13) between hook (12) and the turning cylinder (15), fork (16) is housed on the turning cylinder (15), on the power transmission shaft (15), be equipped with respectively on the upper/lower positions, lower backer (14,17), stand (21) lower backside of rising and falling is provided with oil cylinder Connection Block (19).

According to claim 1 during for the underground construction concrete construction the emergent hydraulic pressure lift of engineering it is characterized in that: be provided with rubber damper (6) between described hydraulic cylinder bearing (5) and pile frame (7) base plate from dropping hammer.