Reinforcement cage press-in device for long spiral drilling machine

Abstract

The utility model relates to the technical field of drilling press-grouting piles, and particularly discloses a reinforcement cage press-in device for a long spiral drilling machine, which comprises a hanging ring, a shell, a vibratory hammer, a vibrating plate, a vibrator and a vibrating rod, the hanging ring is arranged at the top of the shell and is used for connecting the long spiral drilling machine, the vibratory hammer is fixedly mounted at the bottom of the shell, the vibrating plate is mounted at the bottom of the vibratory hammer, and the vibrator is mounted at the bottom of the shell. An annular limiting groove is formed in the bottom of the vibration plate and corresponds to vertical ribs of the reinforcement cage, the vibration hammer transmits vibration force to the reinforcement cage through the vibration plate during work, a vibrator is installed in the shell, a vibrating rod is arranged at the bottom of the vibrator, a through hole is formed in the bottom of the shell, and the vibrating rod penetrates through the through hole in the bottom of the shell. The vibrating rod extends into the concrete, the vibrator is started to drive the vibrating rod to vibrate the concrete through high-frequency vibration, in the process, the reinforcement cage is located in the limiting groove of the vibrating plate, the reinforcement cage cannot deviate, equipment does not need to be replaced, the concrete is vibrated after reinforcement inserting is completed, and the construction process is simplified.

Description

Technical Field

[0001] This utility model relates to the field of drilled pile technology, specifically to a device for pressing steel cages into long spiral drilling rigs. Background Technology

[0002] Long spiral drilling and pressure grouting pile technology is a commonly used pile foundation construction technology in building construction. It is a pile formation method in which concrete is pumped and grouted while the drill is being lifted after the long spiral drilling rig has drilled the hole. After the drill is lifted, the steel cage is lowered. It can effectively avoid phenomena such as hole collapse, necking and pile breakage. It has low construction noise and less waste soil. However, due to the resistance of concrete when lowering the steel cage, the length of the steel cage inserted into the pile is generally no more than 20m.

[0003] In existing technologies, after concrete pouring, a crane and a special rebar inserter are used to insert the rebar cage. To increase the insertion depth and shorten the lowering time, existing rebar inserters use a vibrating device to vibrate the rebar cage vertically. For example, patent CN204510219U discloses a steel pipe type vibratory rebar inserter, which includes a vibratory hammer, a first connecting steel plate, a second connecting steel plate, and a steel pipe. The vibratory hammer is welded to the first connecting steel plate, and the first and second connecting steel plates are connected by bolts. The steel pipe is welded to the second connecting plate and extends into the rebar cage. The vibratory hammer vibrates the first connecting steel plate, and the vibration force is transmitted through the second connecting steel plate to the steel pipe and acts on the rebar cage to reduce the resistance of the concrete to the rebar cage and increase the lowering depth. This solution has the following drawbacks: the rebar inserter cannot vibrate the concrete; after the rebar is inserted into the concrete, the rebar inserter needs to be removed, and then a vibrating device needs to be used to vibrate the concrete to make it denser. During the vibration process, the rebar cage may shift, affecting the pile quality, and the construction process is relatively cumbersome. Utility Model Content

[0004] To address the shortcomings of existing technologies, the technical problem solved by this utility model is to provide a rebar cage pressing device for long spiral drilling rigs, which solves the problem that existing rebar inserters cannot vibrate concrete.

[0005] To solve the above problems, the technical solution adopted by this utility model is: a device for pressing in a reinforcing cage for a long spiral drilling rig, comprising a lifting ring, a housing, a vibratory hammer, a vibrating plate, a vibrator, and a tamping rod. The housing has a lifting ring at the top for connecting to the long spiral drilling rig. The vibratory hammer is fixedly installed at the bottom of the housing. The vibrating plate is installed at the bottom of the vibratory hammer, and the bottom of the vibrating plate has an annular limiting groove corresponding to the vertical reinforcement bars of the reinforcing cage. The vibratory hammer transmits vibration force to the reinforcing cage through the vibrating plate. The limiting groove limits the movement of the reinforcing cage, preventing it from shifting. The vibrating plate also has a hook and a hinged buckle. The hinged joint is equipped with a snap ring, and the movable end of the snap ring extends into the hook. When hoisting the rebar cage, a steel wire rope is used to connect the rebar cage to the hook and lift the rebar cage. A vibrator is installed inside the shell, and a vibrating rod is provided at the bottom of the vibrator. A through hole is provided at the bottom of the shell, through which the vibrating rod passes. After the rebar cage is lowered into place, the vibrating rod extends into the concrete, and the vibrator is started to drive the vibrating rod to vibrate the concrete through high-frequency vibration. During this process, the rebar cage is located in the limiting groove of the vibrating plate, keeping the rebar cage in a vertical downward state without displacement, and without the need to change equipment. After the rebar is inserted, the concrete is vibrated, simplifying the construction process.

[0006] The beneficial effects of this solution are as follows: Compared with the existing technology, by setting a vibratory hammer and a vibratory plate at the bottom of the shell to insert the reinforcing cage, and setting a vibrator and a vibrating rod inside the shell to vibrate the concrete, and setting an annular limiting groove on the vibratory plate to limit the reinforcing cage, the reinforcing cage can be effectively prevented from shifting, thus improving the quality of the pile foundation. After the reinforcing bars are inserted into place, the concrete can be vibrated without changing the equipment, which improves the compactness of the concrete and simplifies the construction process.

[0007] Furthermore, the vibrating plate is bolted to the bottom of the vibrating hammer, making it convenient to replace the corresponding vibrating plate when constructing steel cages of different diameters.

[0008] Furthermore, the inner wall of the housing is provided with a slide rail, which cooperates with the side of the vibrator. When the vibrator moves up and down or vibrates, it slides in the slide rail and limits the horizontal direction of the vibrator so that the vibrator will not produce lateral displacement when vibrating.

[0009] Furthermore, a bidirectional screw is provided above the vibrator inside the housing. Screw sleeves are threadedly installed on both sides of the bidirectional screw. A pull rod is hinged to the screw sleeve, and the other end of the pull rod is hinged to the vibrator. Rotating the bidirectional screw causes the screw sleeves on both sides to move closer or further apart, thereby adjusting the vertical position of the vibrator inside the housing and thus adjusting the position of the vibrating rod in the concrete. This allows for vibration of concrete at different depths.

[0010] Furthermore, a handwheel is also connected to the bidirectional screw. The handwheel is rotatably mounted on the outer wall of the housing, making it easier to rotate the bidirectional screw and convenient to adjust the position of the vibrator.

[0011] Furthermore, a spring is provided on the inner wall of the bottom of the housing. The spring is connected to the vibrator to eliminate part of the vibration between the vibrator and the housing, effectively ensuring the vibration force of the vibrating rod and thus quickly compacting the concrete.

[0012] Furthermore, the diameter of the through hole at the bottom of the shell is larger than the diameter of the vibrating rod, so that the vibrating rod will not come into contact with the shell when it vibrates, thus preventing interference between the vibrating rod and the shell when it vibrates. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the vibrating plate of this utility model;

[0015] In the diagram: 1-lifting ring, 2-shell, 3-vibratory hammer, 4-vibrating plate, 5-vibrator, 6-vibrating rod, 7-slide rail, 8-double-acting screw, 9-screw sleeve, 10-pull rod, 11-handwheel, 12-spring, 13-hook, 14-buckle, 41-limiting groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Implementation, for example, attached Figures 1 to 2The following describes a rebar cage pressing device for a long spiral drilling rig: A lifting ring 1, a housing 2, a vibratory hammer 3, a vibrating plate 4, a vibrator 5, and a tamping rod 6. The housing 2 has a lifting ring 1 at its top for connecting to the long spiral drilling rig. A steel wire rope can be used to connect the lifting ring 1 and the long spiral drilling rig to install the pressing device on the rig. The vibratory hammer 3 is fixedly installed at the bottom of the housing 2. The vibrating plate 4 is installed at the bottom of the vibratory hammer 3. The bottom of the vibrating plate 4 has an annular limiting groove 41, which corresponds to the vertical reinforcement bars of the rebar cage. The vibratory hammer 3 transmits vibration force to the rebar cage through the vibrating plate 4. The limiting groove 41 limits the rebar cage, preventing it from shifting. The vibrating plate 4 also has a hook 13 and a hinged buckle 14, with a retaining spring at the hinge of the buckle 14. The movable end of the buckle 14 extends into the hook 13. When hoisting the rebar cage, the rebar cage is fixed to the hook 13 with a wire rope and then lifted. The buckle 14 can prevent the wire rope from coming off. A vibrator 5 is installed inside the shell 2. The bottom of the vibrator 5 is equipped with a vibrating rod 6. The bottom of the shell 2 is equipped with a through hole. The vibrating rod 6 passes through the through hole at the bottom of the shell 2 and extends through the vibrating hammer 3 and the vibrating plate 4 to the bottom of the vibrating plate 4. After the rebar cage is lowered into place, the vibrating rod 6 extends into the concrete. The vibrator 5 is started to drive the vibrating rod 6 to vibrate the concrete through high-frequency vibration. During this process, the rebar cage is located in the limiting groove 41 of the vibrating plate 4, so that the rebar cage is kept vertically downward and will not shift. There is no need to change the equipment. After the rebar is inserted, the concrete is vibrated, which simplifies the construction process.

[0018] The vibrating plate 4 is bolted to the bottom of the vibrating hammer 3, facilitating the replacement of the corresponding vibrating plate 4 when constructing steel cages of different diameters. The inner wall of the housing 2 is provided with a slide rail 7, which engages with the side of the vibrator 5. The vibrator 5 slides within the slide rail 7 during vertical movement or vibration, and the slide rail 7 also limits the horizontal movement of the vibrator 5, preventing lateral displacement during vibration. A bidirectional screw 8 is located above the vibrator 5 inside the housing 2. Screw sleeves 9 are threaded onto both sides of the bidirectional screw 8, and a pull rod 10 is hinged to each screw sleeve 9. The other end of the pull rod 10 is hinged to the vibrator 5. Rotating the bidirectional screw 8 moves the screw sleeves 9 closer or further apart, adjusting the position of the vibrator 5 within the housing. The vertical position of the vibrator 6 within the housing 2 allows for adjustment of its position within the concrete, enabling vibration at different depths. A handwheel 11 is also connected to the bidirectional screw 8, which is rotatably mounted on the outer wall of the housing 2. Rotating the bidirectional screw 8 requires less effort and facilitates adjustment of the vibrator 5's position. A spring 12 is located on the inner wall of the bottom of the housing 2, connected to the vibrator 5. This spring eliminates some of the vibration between the vibrator 5 and the housing 2, effectively ensuring the vibration force of the vibrator 6 and quickly compacting the concrete. The diameter of the through hole at the bottom of the housing 2 is larger than the diameter of the vibrator 6, preventing the vibrator 6 from contacting the housing 2 during vibration and thus preventing interference.

[0019] The specific implementation process is as follows: After the concrete is poured, the reinforcing cage is fixed to the pressing device by connecting the hook 13 of the pressing device and the wire rope, so that the vertical bars of the reinforcing cage are located in the limiting groove 41 of the vibrating plate 4. The long spiral drilling rig lifts and hoists the reinforcing cage to the top of the concrete by means of the wire rope, keeping the reinforcing cage vertically upward. The vibrating hammer 3 is started, and the vibrating plate 4 transmits the force of the vibrating hammer 3 to the reinforcing cage while pressing the reinforcing cage down into the concrete. After the reinforcing cage is pressed into place, the vibrating hammer 3 stops working. At this time, the vibrating rod 6 also extends into the concrete along with the lowering of the reinforcing cage. The vibrator 5 is started to drive the vibrating rod 6 to vibrate at high frequency to compact the concrete, making the concrete more compact. During the vibration process, the reinforcing cage is located in the limiting groove 41 and will not shift, always maintaining a vertical direction. The position of the vibrator 5 in the shell 2 can be adjusted according to the depth of the concrete, thereby adjusting the position of the vibrating rod 6 in the concrete to vibrate the concrete at different depths. The pressing device of this utility model can vibrate concrete without changing the equipment after the steel cage is lowered. The steel cage will not shift during the vibration process, which improves the quality of the pile foundation and simplifies the construction process, making it highly practical.

[0020] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A device for pressing steel cages into a long spiral drilling rig, characterized in that: The device includes a lifting ring, a housing, a vibratory hammer, a vibratory plate, a vibrator, and a tamping rod. The housing has a lifting ring at the top for connecting a long spiral drilling rig. The vibratory hammer is fixedly installed at the bottom of the housing. The vibratory plate is installed at the bottom of the vibratory hammer. The bottom of the vibratory plate has an annular limiting groove, which corresponds to the vertical bars of the reinforcing cage and limits the movement of the reinforcing cage. The vibratory plate also has a hook with a latch hinged to it. A snap ring is provided at the hinge of the latch, and the movable end of the latch extends into the hook. The vibrator is installed inside the housing, and a tamping rod is provided at the bottom of the vibrator. The bottom of the housing has a through hole through which the tamping rod passes.

2. The rebar cage pressing device for a long spiral drilling rig according to claim 1, characterized in that: The vibrating plate is bolted to the bottom of the vibrating hammer.

3. The rebar cage pressing device for a long spiral drilling rig according to claim 1, characterized in that: The inner wall of the housing is provided with a slide rail, which cooperates with the side of the vibrator.

4. The rebar cage pressing device for a long spiral drilling rig according to claim 1, characterized in that: The housing contains a bidirectional screw located above the vibrator. Screw sleeves are threaded onto both sides of the bidirectional screw, and a pull rod is hinged to the screw sleeve. The other end of the pull rod is hinged to the vibrator. Rotating the bidirectional screw causes the screw sleeves on both sides to move closer or further apart.

5. The rebar cage pressing device for a long spiral drilling rig according to claim 4, characterized in that: A handwheel is also connected to the bidirectional screw, and the handwheel can be rotatably mounted on the outer wall of the housing.

6. The rebar cage pressing device for a long spiral drilling rig according to claim 1, characterized in that: A spring is provided on the inner wall of the bottom of the housing, and the spring is connected to the vibrator.

7. The rebar cage pressing device for a long spiral drilling rig according to claim 1, characterized in that: The diameter of the through hole at the bottom of the shell is larger than the diameter of the vibrating rod.

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