CN114045853A

CN114045853A - Pushing device for sinking type vertical shaft

Info

Publication number: CN114045853A
Application number: CN202111544021.6A
Authority: CN
Inventors: 苏延奇; 徐昊朗; 张荣毅
Original assignee: XCMG Kaigong Heavy Industries Nanjing Co Ltd
Current assignee: XCMG Kaigong Heavy Industries Nanjing Co Ltd
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2022-02-15
Anticipated expiration: 2041-12-16
Also published as: CN114045853B

Abstract

The invention discloses a sinking type jacking device for a vertical shaft, relates to the technical field of vertical shaft construction equipment, and aims to solve the problem that the vertical shaft in the prior art is inclined due to uneven stress and even can not sink in a serious condition. The technical scheme is characterized by comprising an oil cylinder and a support frame which are vertically arranged, wherein the bottom of a piston rod of the oil cylinder is connected with a supporting shoe; the bottom end of a piston rod of the oil cylinder is provided with a bearing seat, the bottom wall of the bearing seat is provided with a spherical groove, a hemispherical bearing which is arranged in the spherical groove and is in running fit with the bearing seat is connected to the top wall of the supporting shoe, the piston rod and the supporting shoe are fixed through a double-end stud penetrating through the bearing seat and the hemispherical bearing, a butterfly spring which is positioned between the supporting shoe and a locking nut is sleeved on the double-end stud, and the locking nut is abutted against the supporting shoe through the butterfly spring. The invention can adjust the posture of the vertical shaft, increase downward additional force, assist in overcoming the friction force of the soil body and facilitate the smooth operation of the vertical shaft construction.

Description

Pushing device for sinking type vertical shaft

Technical Field

The invention relates to the technical field of vertical shaft construction equipment, in particular to a pushing device for a sinking type vertical shaft.

Background

At present, along with the continuous expansion of cities, the available space on the ground of a plurality of cities is less and less, and the development of underground space becomes a new choice for perfecting city supporting facilities. The sinking type vertical shaft is a novel underground space construction process, is simple in construction, short in period and high in safety coefficient, and has many advantages compared with the traditional vertical shaft construction method. The general manufacturing process of the sinking type vertical shaft comprises the steps of manufacturing a wall of the sinking shaft, excavating soil, sinking, heightening the wall, excavating soil, sinking, constructing a bottom plate after reaching a designed height, and finishing construction. The sinking principle is that the dead weight of the open caisson is utilized to overcome the resistance of the well wall and sink by the dead weight.

After the shaft boring machine finishes excavating, the open caisson can slowly sink under the action of gravity, when the geology is hard, or the sinking depth is too deep, the friction force between the open caisson wall and the soil body is increased, uneven stress can be generated sometimes, the shaft is inclined, the open caisson can not sink and can not continue to operate seriously, if the difficult problem is not solved, the construction quality and progress can be seriously influenced, and the shaft is even wasted. In order to overcome the defects and shortcomings, the invention provides the pushing device for the sinking type vertical shaft, several devices are generally uniformly distributed above the vertical shaft, and when the vertical shaft is inclined and can not sink, the pushing device extends out of the supporting shoe and pushes the pipe piece of the vertical shaft to adjust the posture of the vertical shaft, and meanwhile, downward additional force is provided, so that excessive friction force is overcome, the vertical shaft is guaranteed to sink stably, and the pushing device has very important significance.

Disclosure of Invention

The invention aims to provide a pushing device for a sinking type vertical shaft, which can adjust the posture of the vertical shaft, increase downward additional force, assist in overcoming the friction force of a soil body, facilitate the construction of the vertical shaft, and has the advantages of simple structure and strong practicability.

The above object of the present invention is achieved by the following technical solutions:

a jacking device for a sinking type shaft comprises an oil cylinder and a support frame, wherein the oil cylinder is vertically arranged, the support frame is used for bearing the oil cylinder, and the bottom of a piston rod of the oil cylinder is connected with a support shoe; the bottom end of the piston rod of the oil cylinder is provided with a bearing seat, the bottom wall of the bearing seat is provided with a spherical groove, the top wall of the supporting shoe is connected with a hemispherical bearing which is arranged in the spherical groove and is in running fit with the bearing seat, the bearing seat and the hemispherical bearing are simultaneously provided with a through hole in a penetrating way, a stud with the diameter being smaller than the aperture of the through hole is arranged in the through hole, one end of the stud is matched with a first threaded hole arranged on the piston rod of the oil cylinder, the other end of the stud is screwed with a locking nut after penetrating through the supporting shoe, the stud is sleeved with a disc spring positioned between the supporting shoe and the locking nut, and the locking nut is abutted against the supporting shoe through the disc spring; the bottom wall of the supporting shoe is provided with a counter bore, and the bottom ends of the locking nut, the disc spring and the stud are all located in the counter bore.

The invention is further configured to: the ball seat is arranged in the ball groove and is in running fit with the ball seat, a conical yielding hole is arranged on the ball seat in a penetrating mode, the aperture of the conical yielding hole on the inner circumferential side wall of the ball seat is smaller than that of the outer circumferential side wall of the ball seat, a hanging bolt is inserted in the conical yielding hole, a top nut of the hanging bolt is a spherical surface attached to the inner circumferential side wall of the ball seat, and the bottom end of the hanging bolt is screwed into the oil cylinder barrel.

The invention is further configured to: the oil cylinder piston rod is provided with a first fixing seat and a second fixing seat, the first fixing seat and the second fixing seat are connected through bolts to form a clamp sleeve, the clamp sleeve is arranged on the oil cylinder piston rod, and the second fixing seat is welded on the supporting frame.

The invention is further configured to: elastic cushion blocks are arranged between the first fixing seat and the second fixing seat and the piston rod of the oil cylinder, and limiting grooves used for limiting the positions of the cushion blocks are formed in the inner side walls of the first fixing seat and the second fixing seat.

The invention is further configured to: and a base plate is arranged on the bottom wall of the support shoe far away from the oil cylinder and is fixed with the support shoe through a fixing bolt.

The invention is further configured to: the supporting frame is connected with a guide rail located on the outer wall of the vertical shaft along the vertical direction, and a supporting plate used for limiting the supporting shoes to move along the guide rail is arranged on the guide rail.

The invention is further configured to: the support frame is provided with a mounting hole for fixing the support frame on equipment outside the vertical shaft.

In conclusion, the beneficial technical effects of the invention are as follows:

when the friction force between the sinking type vertical shaft and the soil body is increased to cause the inclined posture or the incapability of sinking, the piston rod of the oil cylinder extends out, so that the supporting shoe tightly pushes the vertical shaft pipe piece and pressurizes, the vertical shaft recovers the vertical posture and continues sinking, and the normal operation of the vertical shaft construction is ensured. The oil cylinder piston rod is connected with the ball hinge to enable the supporting shoe to present different angles, and can be better attached to the inclined shaft duct piece, so that the duct piece is stressed uniformly. The first fixing seat and the second fixing seat limit the piston rods of the oil cylinders, the first fixing seat and the second fixing seat are provided with cushion blocks with certain elasticity, and meanwhile, the cylinder barrels of the oil cylinders are connected through spherical hinges, so that the oil cylinders can be finely adjusted within a certain range, the oil cylinders are prevented from being clamped, and the uniform pressure transmission is further guaranteed. The invention has simple structure and strong practicability, can be widely applied to the field of sinking type shaft construction, and generates good benefit.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of an embodiment of the present invention;

fig. 3 is a sectional view taken along a-a in fig. 2.

In the figure, 1, a supporting shoe; 2. a first fixed seat; 3. an oil cylinder; 4. a support frame; 5. a second fixed seat; 6. a guide rail; 7. a base plate; 8. locking the nut; 9. a disc spring; 10. a hemispherical bearing; 11. a bearing seat; 12. a stud; 13. cushion blocks; 14. a ball seat; 15. hoisting the bolt; 16. and a supporting plate.

Detailed Description

The invention discloses a jacking device for a sunken vertical shaft, which comprises an oil cylinder 3 and a support frame 4 for bearing the oil cylinder 3, wherein the oil cylinder 3 is vertically arranged, and the bottom of a piston rod of the oil cylinder 3 is connected with a supporting shoe 1, referring to fig. 1, 2 and 3. The support frame 4 is provided with a mounting hole for fixing the support frame 4 to other equipment outside the shaft. The bottom wall of the piston rod of the oil cylinder 3 is provided with a circular groove, a bearing seat 11 can be arranged in and is limited, the top wall of the supporting shoe 1 is connected with a hemispherical bearing 10 which is arranged in the spherical groove and is in running fit with the bearing seat 11, and the outer surface of the hemispherical bearing 10 is a spherical surface. The bearing seat 11 and the hemispherical bearing 10 are simultaneously provided with through holes in a penetrating manner, the stud 12 is inserted into the through holes, the diameter of each through hole is larger than the diameter of the stud 12, the hemispherical bearing 10 does not interfere with the stud 12 when inclining for a certain angle, one end of the stud 12 is in threaded connection with a threaded hole formed in the bottom wall of a piston rod of the oil cylinder 3, and the other end of the stud is provided with a locking nut 8 in a penetrating manner after penetrating through the supporting shoe 1. The stud 12 is sleeved with a belleville spring between the supporting shoe 1 and the locking nut 8, and the locking nut 8 tightly supports the supporting shoe 1 through the belleville spring. The hemispherical bearing 10 is installed in the bearing seat 11 and can slide, so as to drive the supporting shoe 1 to present different angles.

The supporting shoe 1 is provided with a round hole with a diameter larger than that of the stud bolt 12 along the vertical direction, so that the supporting shoe 1 does not interfere with the stud bolt 12 when inclining for a certain angle, the top of the round hole extends to the through hole of the hemispherical bearing 10, the bottom end of the round hole is provided with a counter bore, the depth of the counter bore can be embedded into the screwed stud bolt 12, and the lower surface of the supporting shoe is provided with a threaded hole for matching with the counter bore bolt to close the base plate 7. The backing plate 7 is made of a wear-resistant and hard material and is used for preventing the supporting boots 1 from being worn.

One end of a stud 12 penetrates through a disc spring 9, the supporting shoe 1, a hemispherical bearing 10 and a bearing seat 11 to be closed with the oil cylinder 3, the other end of the stud is locked by a locking nut 8, the supporting shoe 1 is connected with the oil cylinder 3, and then a cushion plate 7 is connected with the supporting shoe 1 through a countersunk screw. The supporting shoe 1 can rotate in a certain range through a spherical hinge structure formed by the hemispherical bearing 10, and the posture of the inclined vertical shaft duct piece can be flexibly adjusted, so that the duct piece is uniformly stressed.

In order to stabilize 3 piston rods of hydro-cylinder, be provided with fixing base one 2 and fixing base two 5 on 3 piston rods of hydro-cylinder, fixing base one 2 and fixing base two 5 constitute the clamp cover through bolted connection and establish on 3 piston rods of hydro-cylinder, and fixing base two 5 welds in support frame 4.

The top end of the cylinder barrel of the oil cylinder 3 is provided with a spherical groove, the support frame 4 is fixed with an annular ball seat 14, and the ball seat 14 is arranged in the spherical groove and is in running fit with the ball seat 14. The ball seat 14 is provided with a conical yielding hole in a penetrating manner, the aperture of the conical yielding hole on the inner circumferential side wall of the ball seat 14 is smaller than the aperture on the outer circumferential side wall of the ball seat 14, a hanging bolt 15 is inserted into the conical yielding hole, a nut at the top end of the hanging bolt 15 is a spherical surface which is attached to the inner ring shape of the ball seat 14, and the bottom end of the hanging bolt is screwed into the cylinder barrel 3 of the oil cylinder. Specifically, the inner surface and the outer surface of the ball seat 14 are spherical surfaces, the outer spherical surface is attached to the spherical groove of the oil cylinder 3, and the inner spherical surface is attached to the spherical surface of the hoisting bolt 15 to form a double-spherical hinge mode. The hoisting bolt 15 penetrates through the conical abdicating hole to be screwed into the cylinder barrel of the oil cylinder 3, so that the oil cylinder 3 can slide on the ball seat 14 within a certain range, the posture of the whole oil cylinder 3 is further finely adjusted, and the oil cylinder 3 is prevented from being clamped due to the limit of the front end. The top wall of the ball seat 14 is provided with a threaded hole and is connected with the support frame 4 through a bolt, and then the whole device is fixed on the support frame 4.

In order to match with a spherical hinge structure at the top of a cylinder barrel of the oil cylinder 3, a limiting groove is formed in the first fixing seat 2 and the second fixing seat 5, two semi-annular cushion blocks 13 are arranged in the limiting groove and clamp a piston rod of the oil cylinder 3, and the cushion blocks 13 have certain elasticity and allow the oil cylinder 3 to incline in a certain range.

In order to prevent the supporting shoe 1 from rotating and not contacting well a shaft duct piece when a piston rod of the oil cylinder 3 extends out, at least two supporting plates 16 are welded on the side wall of the supporting shoe 1 close to the supporting frame 4, a guide rail 6 is connected to the supporting frame 4 along the vertical direction, and a certain distance is kept between the supporting plates 16 and the guide rail 6 and can be 5-20 cm. In this embodiment, two faggings 16 set up on same water flat line, prop 1 horizontal rotation of boots, fagging 16 can touch guide rail 6, and consequently guide rail 6 can restrict to prop boots 1 and no longer continue horizontal rotation, avoids propping boots 1 because the wide-angle rotates, has the unable contact segment of partly bottom surface, leads to area of contact little, and pressure is too big, the uneven circumstances of atress. Of course, the two stays 16 are not limited to being at the same horizontal plane as shown in fig. 2, but may be higher or lower, and in any case, they function to limit the rotation of the shoe 1 in the horizontal direction.

The working principle of the invention is as follows: the support frame 4 is fixed on the equipment on the side of the shaft, and in order to ensure that the stress is uniform when the shaft sinks, a plurality of groups of pushing devices are uniformly distributed on the pipe piece of the shaft. When the friction force between the sinking type vertical shaft and the soil body is increased to cause the inclined posture or the incapability of sinking, the oil cylinder 3 in the pushing device extends out to push the supporting shoe 1 to tightly push the vertical shaft pipe piece and pressurize, so that the vertical shaft is restored to the vertical posture and continues to sink, and the normal operation of the vertical shaft construction is ensured. The oil cylinder 3 extends out of the end and is connected with the ball hinge, so that the supporting shoe 1 can present different angles and can be better attached to an inclined shaft duct piece, and the duct piece is stressed uniformly. The piston rod of the oil cylinder 3 is limited by the first fixing seat 2 and the second fixing seat 5, the cushion block 13 has certain elasticity, and meanwhile, the upper part of the oil cylinder 3 is connected through a spherical hinge, so that the oil cylinder 3 can be finely adjusted within a certain range, the oil cylinder 3 is prevented from being clamped, and the pressure is further guaranteed to be transmitted uniformly.

The invention has the advantages that the posture of the sinking type vertical shaft can be adjusted, the downward additional force is increased, the soil friction force is overcome in an auxiliary mode, the construction of the vertical shaft is facilitated, the structure is simple, the practicability is strong, the device can be widely applied to the field of the sinking type vertical shaft construction, and good benefits are generated.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.

Claims

1. The utility model provides a pusher is used to formula of sinking shaft which characterized in that: the device comprises an oil cylinder (3) and a support frame (4) used for bearing the oil cylinder (3), wherein the oil cylinder (3) is vertically arranged, and the bottom of a piston rod of the oil cylinder (3) is connected with a supporting shoe (1); the bottom end of a piston rod of the oil cylinder (3) is provided with a bearing seat (11), the bottom wall of the bearing seat (11) is provided with a spherical groove, the top wall of the support shoe (1) is connected with a hemispherical bearing (10) which is arranged in the spherical groove and is in running fit with the bearing seat (11), the bearing seat (11) and the hemispherical bearing (10) are simultaneously provided with through holes in a penetrating manner, and stud bolts (12) with the diameter being smaller than the diameter of the through holes are arranged in the through holes, one end of each stud bolt (12) is matched with a first threaded hole arranged on the piston rod of the oil cylinder (3), the other end of each stud bolt penetrates through the support shoe (1) and is provided with a locking nut (8) in a rotating manner, a disc spring positioned between the support shoe (1) and the locking nut (8) is sleeved on each stud bolt (12), and the locking nut (8) is tightly supported by the support shoe (1) through the disc spring; and counterbores are formed in the bottom wall of the supporting shoe (1), and the bottom ends of the locking nut (8), the disc spring (9) and the stud (12) are all located in the counterbores.

2. The thrustor for a sunken shaft according to claim 1, wherein: spherical recess has been seted up on the cylinder top of hydro-cylinder (3), be fixed with annular ball seat (14) of circle on support frame (4), ball seat (14) arrange in spherical recess and with ball seat (14) normal running fit, wear to be equipped with the toper hole of stepping down on ball seat (14), the toper is stepped down the aperture that the hole was located on the inner circumference lateral wall of ball seat (14) and is less than the aperture that is located on the outer circumference lateral wall of ball seat (14), the toper is stepped down downthehole to be inserted and is equipped with and hangs and get bolt (15), hang and get the spherical face that bolt (15) top nut was for laminating with ball seat (14) inner ring shape, bottom screw in hydro-cylinder (3) cylinder.

3. The thrustor for a sunken shaft according to claim 2, wherein: be provided with fixing base (2) and fixing base two (5) on hydro-cylinder (3) piston rod, fixing base one (2) and fixing base two (5) are established on hydro-cylinder (3) piston rod and fixing base two (5) weld in support frame (4) through bolted connection constitution clamp cover.

4. The thrustor for a sunken shaft according to claim 3, wherein: elastic cushion blocks (13) are arranged between the first fixing seat (2), the second fixing seat (5) and the piston rod of the oil cylinder (3), and limiting grooves used for limiting the positions of the cushion blocks (13) are formed in the inner side walls of the first fixing seat (2) and the second fixing seat (5).

5. The thrustor for a sunken shaft according to claim 4, wherein: a base plate (7) is arranged on the bottom wall of the support shoe (1) far away from the oil cylinder (3), and the base plate (7) is fixed with the support shoe (1) through a fixing bolt.

6. The thrustor for a sunken shaft according to claim 1, wherein: the supporting frame (4) is connected with a guide rail (6) located on the outer wall of the vertical shaft along the vertical direction, and at least two supporting plates (16) used for limiting the supporting shoes (1) to move along the guide rail (6) are arranged on the guide rail (6).

7. The thrustor for a sunken shaft according to claim 1, wherein: and the support frame (4) is provided with a mounting hole for fixing the support frame (4) on equipment outside the vertical shaft.