Open caisson sinking device with good stability

Abstract

The utility model relates to the technical field of open caissons, in particular to an open caisson sinking device with good stability, which comprises a shaft, a truss is fixedly mounted above the shaft, a motor is mounted in the middle of the top of the truss, the output end of the bottom of the motor is connected with a transmission shaft, and a sinking mechanism is mounted at the bottom end of the transmission shaft. A connecting rod is fixedly mounted below the truss, and a top seat is fixedly mounted below the connecting rod; a soil digging drill and digging cutters on the sinking mechanism work to loosen and remove soil near an inner ring of a blade foot, and the two groups of digging cutters rotate to work, so that the soil at the bottom of a shaft can be uniformly removed during digging operation, and before sinking, soil digging operation is performed every time, so that the digging efficiency is greatly improved. Firstly, the geological condition in a sinking path is explored according to the sinking touch condition of the extension rod and the rod tip, and quicksand or rock can be treated in advance, so that sinking of the open caisson is facilitated, and inclination of the open caisson is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of caissons, in particular to a caisson sinking device with good stability. Background Art

[0002] Caisson is a shaft-shaped structure, which is excavated in the well, and sinks to the designed elevation by relying on its own gravity to overcome the friction of the well wall, and then the bottom is sealed with concrete and the well hole is filled to make it the foundation of bridge piers or other structures. It is generally used in the construction of foundation pits for large bridge piers, sewage pumping stations, large equipment foundations, civil air defense shelters, shield assembly wells, underground lanes and station hydraulic foundation construction enclosures.

[0003] During the construction of caisson, quicksand is likely to occur, causing the caisson to tilt or become difficult to sink.

[0004] For this reason, we propose a caisson sinking device with good stability. Utility Model Content

[0005] The utility model provides a caisson sinking device with good stability. A sinking mechanism is arranged at the bottom of the shaft. The soil drill and the digging knife on the sinking mechanism work to loosen and clear the soil near the inner circle of the blade foot. Because the two sets of digging knives work in rotation, the soil at the bottom of the shaft can be cleared more evenly during digging operations. Before sinking, each time the digging operation is performed, the geological conditions in the sinking path are first explored by extending the rod and the rod tip to sink and touch the rocks. Quicksand or rocks can be dealt with in advance, thereby facilitating the sinking of the caisson and preventing the caisson from tilting.

[0006] The technical solution of the utility model is as follows: a caisson sinking device with good stability, comprising a wellbore, a truss is fixedly installed above the wellbore, a motor is installed in the middle of the top of the truss, the output end of the bottom of the motor is connected with a transmission shaft, a sinking mechanism is installed at the bottom end of the transmission shaft, a connecting rod is fixedly installed below the truss, a top seat is fixedly installed below the connecting rod, a plurality of hydraulic rods are connected to the bottom of the top seat, an extension rod is installed below the hydraulic rod, a rod tip is integrally formed at the bottom end of the extension rod, and a blade foot is fixedly installed below the wellbore.

[0007] Preferably, the sinking mechanism includes an earth-breaking auger, both ends of the top of which are equipped with cutter shafts, one end of the cutter shaft is fixedly equipped with an earth-moving blade, a sleeve is fixedly equipped at the connection position between the cutter shaft and the transmission shaft, a protective tube is connected to the top of the sleeve, and the protective tube is located outside the transmission shaft.

[0008] Preferably, the cutter shaft is rotatably connected to the transmission shaft via a bushing, and the earth-breaking drill is rotatably connected via the transmission shaft.

[0009] Preferably, an upper ring frame is provided at a position close to the top end of the extension rod, and a lower ring frame is provided at a position close to the bottom end of the extension rod.

[0010] Preferably, the upper ring frame and the lower ring frame are in an annular structure, and the extension rods are provided in a plurality of groups distributed in an annular shape, and the plurality of groups of extension rods penetrate the upper ring frame and the lower ring frame.

[0011] Preferably, the extension rod and the rod tip are telescopically adjusted by a hydraulic rod.

[0012] The beneficial effects of the utility model are:

[0013] By arranging a sinking mechanism at the bottom of the shaft, the earth-opening drill and the digging knife on the sinking mechanism are used to loosen and remove the soil near the inner circle of the blade foot, and because the two sets of digging knives work in rotation, the soil at the bottom of the shaft can be removed more evenly during digging operations. Before sinking, each time digging operation is carried out, the geological conditions in the sinking path are first explored by extending the rod and the tip of the rod to explore the geological conditions. Quicksand or rocks can be dealt with in advance, thereby facilitating the sinking of the caisson and preventing the caisson from tilting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the sinking mechanism of the utility model;

[0017] Figure 3 This is a schematic diagram of the top seat structure of the utility model;

[0018] Figure 4 It is a schematic diagram of the structure of the upper ring frame and the lower ring frame of the utility model.

[0019] In the figure: 1. truss; 2. motor; 3. transmission shaft; 4. connecting rod; 5. top seat; 6. hydraulic rod; 7. extension rod; 8. rod tip; 9. sinking mechanism; 10. blade foot; 11. lower ring frame; 12. wellbore; 13. protective cylinder; 14. earth-digging knife; 15. knife shaft; 16. shaft sleeve; 17. earth-digging drill; 18. upper ring frame. DETAILED DESCRIPTION

[0020] The following will be combined with the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figure 1 to Figure 4 As shown, the present embodiment proposes a truss 1, a sinking mechanism 9 and a shaft 12, wherein the truss 1 is fixedly installed above the shaft 12, a motor 2 is installed in the middle of the top of the truss 1, a transmission shaft 3 is connected to the output end of the bottom of the motor 2, a sinking mechanism 9 is installed at the bottom end of the transmission shaft 3, a connecting rod 4 is fixedly installed below the truss 1, a top seat 5 is fixedly installed below the connecting rod 4, a plurality of hydraulic rods 6 are connected to the bottom of the top seat 5, an extension rod 7 is installed below the hydraulic rod 6, a rod tip 8 is integrally formed at the bottom end of the extension rod 7, and a blade foot 10 is fixedly installed below the shaft 12; the sinking mechanism 9 comprises an earthmoving knife 14, a knife shaft 15, a shaft sleeve 16 and an earthmoving drill 17, an earthmoving drill 17 is rotatably installed at the bottom end of the sinking mechanism 9, a knife shaft 15 is installed at both ends of the sinking mechanism 9, an earthmoving knife 14 is fixedly installed at one end of the knife shaft 15, and a shaft sleeve 16 is fixedly installed at the connection position between the knife shaft 15 and the transmission shaft 3.

[0022] In this embodiment, the equipment is fixed by the truss 1, and then the extension rod 7 and the rod tip 8 are controlled by the hydraulic rod 6 in the top seat 5 to sink and touch the geology around the blade foot 10 at the bottom end of the wellbore 12, and then the motor 2 works, and the transmission shaft 3 drives the sinking mechanism 9 to work, and the earth-opening drill 17 and the digging knife 14 on the sinking mechanism 9 work to loosen and clear the geology near the inner circle of the blade foot 10. Because the two sets of digging knives 14 work in rotation, the soil at the bottom of the wellbore 12 can be cleared more evenly during the digging operation, thereby facilitating the sinking of the caisson and preventing the caisson from tilting.

[0023] Preferred as Figure 2 As shown, in order to allow the earthmoving blade 14 and the earth-breaking drill 17 to work normally, the blade shaft 15 is rotationally connected to the transmission shaft 3 via a shaft sleeve 16, and the earth-breaking drill 17 is rotationally connected via the transmission shaft 3.

[0024] Preferred as Figure 2 As shown, in order to ensure that the transmission shaft 3 can be protected during the earth-moving operation to prevent it from sticking to the soil and to improve the service life and safety, a protective tube 14 is fixedly installed on the outside of one end of the transmission shaft 3 close to the sinking mechanism 9.

[0025] Preferred as Figure 1 and Figure 4As shown, in order to protect the extension rod 7 and to accurately perform sinking and touch detection on the geology around the bottom blade foot 10 inside the wellbore 12, an upper ring frame 18 is provided near the top of the extension rod 7, and a lower ring frame 11 is provided near the bottom of the extension rod 7.

[0026] Preferred as Figure 4 As shown, in order to facilitate use and protect the extension rod 7 at the same time, the upper ring frame 18 and the lower ring frame 11 are in an annular structure, and the extension rod 7 is provided with several groups distributed in an annular shape, and several groups of extension rods 7 pass through the upper ring frame 18 and the lower ring frame 11.

[0027] Preferred as Figure 1 As shown, in order to make the extension rod 7 and the rod tip 8 work normally, the extension rod 7 and the rod tip 8 are telescopically adjusted by the hydraulic rod 6.

[0028] The working principle of the utility model is as follows: the equipment is fixed by the truss 1, and then the extension rod 7 and the rod tip 8 are controlled by the hydraulic rod 6 in the top seat 5 to sink and touch the geology around the blade foot 10 at the bottom end of the wellbore 12, and then the motor 2 works, and the transmission shaft 3 drives the sinking mechanism 9 to work, and the earth-opening drill 17 and the digging knife 14 on the sinking mechanism 9 work to loosen and clear the geology near the inner circle of the blade foot 10, so that the caisson can sink smoothly.

[0029] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A caisson sinking device with good stability, characterized in that: The invention comprises a wellbore (12), wherein a truss (1) is fixedly installed above the wellbore (12), a motor (2) is installed in the middle of the top of the truss (1), the output end at the bottom of the motor (2) is connected to a transmission shaft (3), the bottom end of the transmission shaft (3) is installed with a sinking mechanism (9), a connecting rod (4) is fixedly installed below the truss (1), a top seat (5) is fixedly installed below the connecting rod (4), a plurality of hydraulic rods (6) are connected to the bottom of the top seat (5), an extension rod (7) is installed below the hydraulic rod (6), a rod tip (8) is integrally formed at the bottom end of the extension rod (7), and a blade foot (10) is fixedly installed below the wellbore (12).

2. A caisson sinking device with good stability according to claim 1, characterized in that: The sinking mechanism (9) comprises an earth-breaking auger (17), both ends of the top of the earth-breaking auger (17) are provided with a cutter shaft (15), one end of the cutter shaft (15) is fixedly provided with an earth-moving blade (14), a shaft sleeve (16) is fixedly provided at the connection position between the cutter shaft (15) and the transmission shaft (3), a protective tube (13) is connected to the top of the shaft sleeve (16), and the protective tube (13) is located outside the transmission shaft (3).

3. A caisson sinking device with good stability according to claim 2, characterized in that: The cutter shaft (15) is rotationally connected to the transmission shaft (3) via a shaft sleeve (16), and the earth-opening drill (17) is rotationally connected via the transmission shaft (3).

4. The caisson sinking device with good stability according to claim 1, characterized in that: An upper ring frame (18) is provided near the top end of the extension rod (7), and a lower ring frame (11) is provided near the bottom end of the extension rod (7).

5. The caisson sinking device with good stability according to claim 4, characterized in that: The upper ring frame (18) and the lower ring frame (11) are annular in structure, and the extension rods (7) are provided in a plurality of groups distributed in an annular manner, and the plurality of groups of the extension rods (7) penetrate the upper ring frame (18) and the lower ring frame (11).

6. The caisson sinking device with good stability according to claim 1, characterized in that: The extension rod (7) and the rod tip (8) are telescopically adjusted via a hydraulic rod (6).

Images