CN210530726U

CN210530726U - Open caisson foundation for constructional engineering construction

Info

Publication number: CN210530726U
Application number: CN201921197923.5U
Authority: CN
Inventors: 刘沛坚
Original assignee: Dongguan Jianan Pile Foundation Engineering Co ltd
Current assignee: Dongguan Jianan Pile Foundation Engineering Co ltd
Priority date: 2019-07-26
Filing date: 2019-07-26
Publication date: 2020-05-15
Anticipated expiration: 2029-07-26

Abstract

The utility model relates to an open caisson basis for building engineering construction, including the pit shaft, still include the cat ladder and connect the fixing device of cat ladder and pit shaft, the cat ladder include the fixed ladder and with fixed ladder parallel arrangement's slide ladder, the fixed ladder upper end extends to the export of pit shaft top, and the lower extreme passes through stop gear to be connected with the slide ladder, slides from top to bottom along the fixed ladder, bottom and ground butt when the slide ladder slides to the extreme low position. The utility model has the advantages of be convenient for constructor business turn over open caisson, and do not occupy the construction space of open caisson bottom.

Description

Open caisson foundation for constructional engineering construction

Technical Field

The utility model belongs to the technical field of the technique of building engineering foundation structure and specifically relates to an open caisson foundation for building engineering construction is related to.

Background

The open caisson foundation is a well cylindrical structure, and is characterized in that earth is dug from the well, the earth is sunk to a designed elevation after overcoming the frictional resistance of the well wall by means of the self gravity, and then concrete is adopted to seal the bottom and fill the well hole, so that the open caisson foundation becomes the foundation of a bridge abutment or other structures. The open caisson foundation is characterized in that the embedding depth can be very large, the integrity is strong, the stability is good, the bearing area is large, and the open caisson foundation can bear large vertical load and horizontal load; the open caisson is not only a foundation, but also a cofferdam structure for retaining soil and retaining water during construction.

The sinking of open caisson makes the important step in the open caisson construction, there are two kinds of construction methods of drainage sinking dry type open caisson method and not drainage sinking wet type open caisson method now mainly. The drainage sinking method firstly drains accumulated water in the well and then carries out soil taking operation during sinking operation, and when a smaller construction tool of the open caisson cannot enter, construction personnel needs to enter the open caisson to manually dig soil.

Referring to fig. 1, the open caisson foundation in the prior art comprises a shaft 1 and a straight ladder 7, wherein the straight ladder 7 is obliquely arranged in the shaft, the lower end of the straight ladder 7 is abutted against the ground, and the upper end of the straight ladder is leaned against the inner wall of the shaft 1.

The above prior art solutions have the following drawbacks: the inclined vertical ladder occupies the space of the well bottom, so that the originally narrow well bottom is more crowded, and the construction of underground constructors is hindered.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a sunk well basis for building engineering construction, the constructor of being convenient for passes in and out the sunk well, and does not occupy the construction space of sunk well bottom.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:

the utility model provides an open caisson basis for building engineering construction, includes pit shaft and cat ladder, cat ladder and pit shaft pass through fixing device and connect, the cat ladder include the fixed ladder and with fixed ladder parallel arrangement's slide ladder, the fixed ladder upper end extends to the export of pit shaft top, and the lower extreme passes through stop gear and is connected with the slide ladder, the slide ladder can be followed the fixed ladder and slided from top to bottom, bottom and ground butt when the slide ladder slided the extreme low position.

By adopting the technical scheme, the ladder stand comprises the fixed ladder and the sliding ladder capable of sliding up and down along the fixed ladder, and the sliding ladder slides down to the bottom of the open caisson along the fixed ladder, so that constructors can conveniently go in and out of the open caisson; the sliding ladder slides upwards along the fixed ladder and is fixed through the limiting mechanism, so that the ladder is prevented from obstructing construction, the moving area of constructors at the bottom of a well is increased, and construction is facilitated.

The utility model discloses further set up to: the fixed ladder comprises two parallel ladder rods I and two sliding blocks fixed on the ladder rods I, the sliding ladder comprises two parallel ladder rods II, and sliding grooves are formed in the ladder rods II in a corresponding mode to the sliding blocks.

Through adopting above-mentioned technical scheme, the slider on the slide ladder slides in the spout on the fixed ladder, and frictional force is less and the spout has the guide effect, can avoid the slide ladder skew roll-off fixed ladder.

The utility model discloses further set up to: stop gear includes spacing seat, spacing seat level is fixed in ladder pole one outside, and the one end that spacing seat is close to ladder pole one is equipped with the blind hole, it has the gag lever post to peg graft in the blind hole, the gag lever post passes through compression spring and is connected bottom the blind hole, be equipped with the through-hole that corresponds with the gag lever post on the ladder pole one, two upper ends of ladder pole are equipped with spacing hole one, and the lower extreme is equipped with spacing hole two.

By adopting the technical scheme, when the sliding ladder slides downwards to the bottom of the open caisson along the fixed ladder, the limiting rod penetrates through the first through hole in the fixed ladder and the first limiting hole in the sliding ladder under the elastic force of the compression spring, and the sliding ladder cannot slide continuously; the limiting rod is pressed along the length direction of the compression spring to enable the limiting rod to exit from the first limiting hole, the sliding ladder upwards slides along the fixed ladder, when the sliding ladder slides to the highest position, the limiting rod penetrates through the second limiting hole under the elastic action of the compression spring, and the sliding ladder cannot continue to slide.

The utility model discloses further set up to: the limiting rod is made of steel.

Through adopting above-mentioned technical scheme, in the use, the gag lever post not only will bear the weight of slide ladder and still will bear constructor's weight on the slide ladder, and the gag lever post uses steel bending strength height, can prevent that the gag lever post from appearing crooked, avoids connecting the incident that slide ladder and fixed ladder's stop gear became invalid and causes.

The utility model discloses further set up to: the fixing device comprises two mounting seats symmetrically arranged on two sides of the fixed ladder and embedded parts which are arranged corresponding to the mounting seats and embedded on the inner wall of the shaft.

By adopting the technical scheme, the embedded part for installing the ladder stand is arranged in the shaft during manufacturing, so that the phenomenon that the shaft structure is damaged by drilling the installation hole on the inner wall after the shaft is manufactured is avoided.

The utility model discloses further set up to: the fixed ladder is connected with the embedded part through a bolt.

Through adopting above-mentioned technical scheme, use bolted connection to be convenient for demolish the cat ladder after the construction is accomplished, cat ladder reuse.

The utility model discloses further set up to: three groups of fixing devices are uniformly arranged on the inner wall of the shaft along the vertical direction.

Through adopting above-mentioned technical scheme, three fixing device of group can make the cat ladder more stable, can not take place to rock when constructor scrambles, and the structure is more stable.

The utility model discloses further set up to: and the top of the shaft is horizontally provided with a handrail connected with the fixed ladder.

Through adopting above-mentioned technical scheme, set up the handrail at the pit shaft top and be convenient for constructor to get into and leave the cat ladder when having the impetus.

The utility model discloses further set up to: the fixed ladder is provided with a reticular protective cage.

Through adopting above-mentioned technical scheme, set up netted protection cage on fixed ladder, let constructor can rely on protection cage in the back when climbing fixed ladder, increase the impetus, avoid constructor careless landing.

To sum up, the utility model discloses a beneficial technological effect does:

1. a ladder stand is arranged in the open caisson, and a sliding ladder capable of sliding up and down is arranged at the lower end of the ladder stand, so that the construction can be conveniently carried out, and the construction space of the bottom of the open caisson is not occupied;

2. the limiting rod is automatically clamped into the first limiting hole or the second limiting hole under the elastic force action of the compression spring to limit the sliding ladder, and the limiting can be relieved by pressing the limiting rod, so that the operation is convenient;

3. the cat ladder passes through the bolt and is connected with the built-in fitting, the dismouting of being convenient for, detachable used repeatedly after the open caisson construction of cat ladder is accomplished.

Drawings

Fig. 1 is a schematic diagram of a prior art structure.

Fig. 2 is a schematic view of the overall structure of the present invention.

Fig. 3 is a schematic view of the ladder stand of fig. 1.

Fig. 4 is a partial schematic view of fig. 1.

Fig. 5 is a schematic structural diagram of the limiting mechanism in fig. 1.

In the figure, 1, a well bore; 2. a handrail; 3. protecting the cage; 4. climbing a ladder; 41. fixing the ladder; 411. a ladder rod I; 412. a slider; 413. a through hole; 42. a slide ladder; 421. a ladder bar II; 422. a chute; 423. a first limiting hole; 424; a second limiting hole; 5. a limiting mechanism; 51. a limiting seat; 52. a compression spring; 53. a limiting rod; 54. blind holes; 6. a fixing device; 61. embedding parts; 62. a mounting seat; 7. a straight ladder.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 2 and 3, for the utility model discloses a open caisson foundation for building engineering construction, including the cat ladder 4 of pit shaft 1 and vertical setting, 4 bilateral symmetry welding of cat ladder have two mount pads 62, and 1 inner wall of pit shaft is pre-buried to have the built-in fitting 61 that corresponds with mount pad 62, and mount pad 62, built-in fitting 61 and connect two sets of bolt to constitute fixing device 6, evenly are provided with three fixing device 6 of group along vertical direction between cat ladder 4 and 1 inner wall of pit shaft. The top of the shaft 1 is vertically provided with a handrail 2 connected with a ladder 4.

Referring to fig. 4 and 5, the ladder stand 4 comprises a fixed ladder 41 and a sliding ladder 42 capable of sliding up and down along the fixed ladder 41, the fixed ladder 41 comprises two first ladder bars 411 arranged in parallel, one side, corresponding to the first ladder bars 411, is welded with a sliding block 412 along the length direction, the upper end of the fixed ladder 41 extends to the top opening of the shaft 1, the lower end of the fixed ladder 41 is provided with a through hole 413 horizontally penetrating through the fixed ladder 41, the outer side of the first ladder bars 411 is detachably fixed with a limiting mechanism 5 through bolts, the limiting mechanism 5 is arranged corresponding to the through hole 413, and the fixed ladder 41 is provided with a mesh-shaped protection cage 3; the slide ladder 42 includes two ladder poles 421 of two parallel arrangement, corresponds with slider 412 on two ladder poles 421 and is equipped with spout 422, and two ladder pole 421 upper ends are equipped with the level and run through spout 422's spacing hole 423, and spacing hole 423 cross-section is for following two ladder pole 421 length direction's a style of calligraphy, and two ladder pole 421 lower extremes are equipped with the through-hole 413 that runs through spout 422, and the aperture of spacing hole two 424 is unanimous with gag lever post 53 diameter.

Referring to fig. 5, the limiting mechanism 5 includes a limiting seat 51, a compression spring 52 and a limiting rod 53, the limiting seat 51 is horizontally fixed on a first ladder rod 411, a blind hole 54 is formed at one end close to the fixed ladder 41, the compression spring 52 is inserted into the blind hole 54, one end of the compression spring 52 is fixed with the bottom surface of the blind hole 54, the other end of the compression spring is fixed with the limiting rod 53, one end of the limiting rod 53 connected with the compression spring 52 is inserted into the blind hole 54, the other end of the limiting rod 53 penetrates through a through hole 413 on the first ladder rod 411, when the sliding ladder 42 slides to the lowest position, the limiting rod 53 penetrates through a first limiting hole 423, and when the sliding ladder 42 slides to.

The implementation principle of the embodiment is as follows: the limiting rod 53 is pressed along the direction of the compression spring 52, the limiting rod 53 exits from the second limiting hole 424, the sliding ladder 42 slides downwards along the fixed ladder 41 under the action of gravity, the limiting rod 53 enters the first limiting hole 423 under the action of the elastic force of the compression spring 52, the bottom end of the sliding ladder 42 is abutted against the ground, and constructors can go in and out of the shaft 1 along the ladder stand 4.

The limiting rod 53 is pressed along the direction of the blind hole 54, the limiting rod 53 exits the first limiting hole 423, when the sliding ladder 42 slides to the highest position along the fixed ladder 41, the limiting rod 53 passes through the second limiting hole 424 under the elastic action of the compression spring 52 to limit the sliding ladder 42 to move continuously, and constructors can construct smoothly under the underground without being influenced by the ladder 4.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides an open caisson foundation for building engineering construction, includes pit shaft (1) and cat ladder (4), cat ladder (4) and pit shaft (1) are connected through fixing device (6), its characterized in that: the ladder (4) comprises a fixed ladder (41) and a sliding ladder (42) arranged in parallel with the fixed ladder (41), the upper end of the fixed ladder (41) extends to an outlet at the top of the shaft (1), the lower end of the fixed ladder is connected with the sliding ladder (42) through a limiting mechanism, the sliding ladder (42) slides up and down along the fixed ladder (41), and the bottom of the sliding ladder (42) abuts against the ground when sliding to the lowest position.

2. The open caisson foundation for construction of building engineering as claimed in claim 1, wherein: fixed ladder (41) include two parallel arrangement's ladder pole one (411), two be fixed with slider (412) on ladder pole one (411), slide ladder (42) include two parallel arrangement's ladder pole two (421), correspond with slider (412) on ladder pole two (421) and be equipped with spout (422).

3. The open caisson foundation for construction of constructional engineering, as claimed in claim 2, wherein: stop gear (5) are including spacing seat (51), spacing seat (51) level is fixed in the terraced pole one (411) outside, and the one end that spacing seat is close to terraced pole one (411) is equipped with blind hole (54), it has gag lever post (53) to peg graft in blind hole (54), gag lever post (53) are connected bottom blind hole (54) through compression spring (52), be equipped with through-hole (413) that correspond with gag lever post (53) on terraced pole one (411), terraced pole two (421) upper ends are equipped with spacing hole one (423), and the lower extreme is equipped with spacing hole two (424).

4. The open caisson foundation for construction of building engineering as claimed in claim 3, wherein: the limiting rod (53) is made of steel.

5. The open caisson foundation for construction of building engineering as claimed in claim 1, wherein: the fixing device (6) comprises two installing seats (62) symmetrically arranged on two sides of the fixing ladder (41) and embedded parts (61) arranged on the inner wall of the shaft (1) corresponding to the installing seats (62).

6. The open caisson foundation for construction of building engineering, according to claim 5, wherein: the mounting base (62) is connected with the embedded part (61) through bolts.

7. The open caisson foundation for construction of building engineering, according to claim 6, wherein: three groups of fixing devices (6) are uniformly arranged on the inner wall of the shaft (1) along the vertical direction.

8. The open caisson foundation for construction of building engineering as claimed in claim 1, wherein: the top of the shaft (1) is provided with a handrail (2) connected with a fixed ladder (41).

9. The open caisson foundation for construction of building engineering as claimed in claim 1, wherein: the fixed ladder (41) is provided with a reticular protective cage (3).