CN219262295U - Low headroom bored concrete pile construction equipment suitable for under hard rock layer - Google Patents

Abstract

The utility model discloses a construction device for cast-in-place piles with low headroom under hard rock formations, which belongs to the technical field of pile machines and comprises: a drilling rig and a drill bit installed on the drilling rig, the drill bit includes a main shaft, and a main shaft The axial direction is centered and circumferentially installed with a plurality of mounting frames, and the main shaft is far away from the drilling machine end and a plurality of drilling teeth are installed on the mounting frames, and the drilling teeth on the same mounting frame are coaxially connected with driven wheels, A driving mechanism is installed on the mounting frame, the output end of the driving mechanism is connected with a driving wheel, and the driving mechanism is used to drive the driving wheel to rotate, and the driven wheel on the same mounting frame is connected with the driving wheel through a timing belt so that The drill teeth on a mounting frame rotate synchronously. The utility model drives the drilling rig to drill through the power device of the drilling rig body and jointly implements drilling through the power of the drill bit during the construction of the low-clearance cast-in-situ pile, so as to ensure that the drilling efficiency is not affected when the height of the drilling rig fuselage is reduced.

Description

A construction device for cast-in-place piles with low headroom suitable for hard rock formations

technical field

The utility model belongs to the technical field of pile drivers, and in particular relates to a construction device for cast-in-situ piles with low headroom under hard rock formations.

Background technique

During the construction of deep foundation pits of super high-rise buildings, due to factors such as design and construction conditions, multiple cast-in-situ piles are constructed under low headroom conditions. Construction has added many difficulties.

Due to the limitation of low clearance conditions, the current rotary drilling rigs on the market do not meet the operation requirements. The minimum height of low clearance drilling rigs is 8m, and there is still a large room for transformation from the working height of 6m, which is difficult to transform. The height of the rotary drilling rig on the market is 6.8m. In contrast, it has the possibility of transformation and can meet the requirements of low headroom operations. It is also used in some construction projects at present. However, due to the transformation, some components that affect the height of the drilling rig have shrunk. This leads to low construction efficiency during the drilling process, especially under hard rock formations, and it is easy to cause severe drill bit wear and difficulty in replacement, resulting in a significant reduction in construction efficiency and affecting the overall construction period of the project.

Therefore need to propose a kind of low headroom cast-in-place pile construction device applicable to hard rock formations, to solve the above problems.

Utility model content

In view of this, the purpose of this utility model is to provide a low-clearance cast-in-place pile construction device suitable for hard rock formations, which is used to solve the problem of low construction efficiency in the drilling process in the prior art, especially under hard rock formations. And it is easy to cause serious wear and tear of the drill bit, and it is difficult to replace it, resulting in a significant reduction in construction efficiency and affecting the overall construction period of the project.

In order to achieve the above object, the utility model provides the following technical solutions:

The utility model provides a low-clearance cast-in-situ pile construction device suitable for hard rock formations, comprising: a drilling rig and a drill bit installed on the drilling rig, the drill bit includes a main shaft, and the main shaft is installed circumferentially around the axis of the main shaft. There are multiple mounting frames, the main shaft is away from the drilling machine end and a plurality of drilling teeth are installed on the mounting frame, the drilling teeth on the same mounting frame are coaxially connected with driven wheels, and the mounting frame is equipped with A driving mechanism, the output end of the driving mechanism is connected with a driving wheel, and the driving mechanism is used to drive the driving wheel to rotate, and the driven wheel on the same mounting frame is connected with the driving wheel through a synchronous belt so that the drill teeth on the same mounting frame synchronous rotation.

Further, a connecting rod is installed on the axis of the driven wheel, and a plurality of sliding grooves are arranged on the connecting rod centering on the axis direction of the connecting rod, and a block capable of sliding along the sliding groove is connected to the sliding groove through a spring, The drill tooth is provided with a connection hole matched with the connecting rod and a slot connected with the connection hole, and the slot engages with or disengages from the block to fix or disengage the drill tooth from the connection rod.

Further, a tensioning wheel connected with the synchronous belt is installed on the installation frame, and the tightness of the synchronous belt can be adjusted by moving the tensioning wheel.

Further, the distance between two driven wheels on the same installation frame is at least 20cm.

Further, the installation frame is arranged obliquely along the side close to the drilling machine.

Further, the synchronous belt is made of glass fiber material.

The beneficial effects of the utility model are:

The utility model drives the drilling rig to drill through the power device of the drilling rig body and jointly implements drilling through the power of the drill bit during the construction of the low-clearance cast-in-situ pile, so as to ensure that the drilling efficiency is not affected when the height of the drilling rig fuselage is reduced.

Other advantages, objectives and features of the present utility model will be set forth in the following description, and to some extent will be obvious to those skilled in the art, or those skilled in the art can be taught from the practice of the present utility model . The objectives and other advantages of the utility model can be realized and obtained through the following description.

Description of drawings

In order to make the purpose, technical solutions and beneficial effects of the utility model clearer, the utility model provides the following drawings for illustration:

Fig. 1 is the structural representation of the drill bit of the utility model embodiment;

Fig. 2 is the drill bit installation schematic diagram of the utility model embodiment;

Fig. 3 is a schematic diagram of the detachable connection between the drill bit and the driven wheel according to the embodiment of the present invention;

Fig. 4 is the enlarged view of part A in Fig. 3 of the utility model embodiment;

Fig. 5 is a schematic diagram of the drill bit installed on the drilling rig according to the embodiment of the present invention.

2, drill bit; 201, main shaft; 202, mounting frame; 203, drill tooth; 204, driven wheel; 205, driving wheel; 206, synchronous belt; , connecting rod; 301, chute; 302, spring; 303, block; 304, connecting hole; 305, slot;

Detailed ways

As shown in Figures 1 to 5, the utility model provides a construction device for cast-in-place piles with low headroom under hard rock formations, including: a drilling rig 1 and a drill bit 2 installed on the drilling rig 1, the drill bit 2 includes a main shaft 201, On the main shaft 201, a plurality of mounting frames 202 are installed around the axis direction of the main shaft 201 as the center. The end of the main shaft 201 away from the drilling machine 1 and the mounting frame 202 are equipped with a plurality of drilling teeth 203. The same mounting frame The drill teeth 203 on the 202 are coaxially connected with a driven wheel 204, a driving mechanism is installed on the mounting frame 202, and the output end of the driving mechanism is connected with a driving wheel 205, and the driven wheel 204 on the same mounting frame 202 passes through The synchronous belt 206 is connected with the drive wheel 205 so that the drill teeth 203 on the same installation frame 202 rotate synchronously.

In this solution, the drill tooth 203 adopts a three-wing diamond alloy drill tooth with a conical angle of 120°; during the drilling process, the drilling rig 1 drives the driving wheel 205 to rotate through the driving mechanism, thereby driving the same mounting frame 202 through the timing belt 206 A plurality of driven wheels 204 on the shaft rotate, thereby driving a plurality of drill teeth 203 to rotate synchronously, and drill through a plurality of drill teeth 203 on the same mounting frame 202 when they encounter hard rock formations, and the plurality of mounting frames provided in the circumferential direction of the main shaft 201 The drilling teeth 203 on the 202 work simultaneously, improving the drilling efficiency.

During the construction of low headroom cast-in-situ piles, the device drives the drilling rig 1 to drill through the power device of the drilling rig 1 body and jointly implements drilling through the power of the drill bit 2, so as to ensure that the drilling efficiency is not affected when the height of the drilling rig 1 is reduced.

In one embodiment of the present utility model, a connecting rod 3 is installed on the axis of the driven wheel 204, and a plurality of sliding grooves 301 are arranged on the connecting rod 3 with the axial direction of the connecting rod 3 as the center, and the sliding grooves 301 A clamping block 303 capable of sliding along the chute 301 is connected inside by a spring 302, and the drill tooth 203 is provided with a connecting hole 304 matched with the connecting rod 3 and a clamping groove 305 communicating with the connecting hole 304, the clamping groove 305 Engage with or disengage from the clamping block 303 to fix or disengage the drill teeth 203 from the connecting rod 3 .

In this solution, when the drill tooth 203 is installed, the connecting hole 304 of the drill tooth 203 corresponds to the connecting rod 3, so that the drill tooth 203 squeezes the block 303 into the chute 301, and when the drill tooth 203 slides along the connecting rod 3 When the clamping block 303 corresponds to the clamping slot 305 , the clamping block 303 extends into the clamping slot 305 under the action of the spring 302 for clamping, so that the drill teeth 203 are fixedly installed on the connecting rod 3 .

Through the design of the above structure, the drill tooth 203 is detachably connected to the driven wheel 204 , which facilitates the installation and replacement of the drill tooth 203 .

In one embodiment of the present utility model, a tensioning wheel 207 is movably installed on the mounting frame 202, and the tensioning wheel 207 is connected with the synchronous belt 206, and the synchronous belt 206 can be adjusted by moving the tensioning wheel 207 tightness.

In one embodiment of the present invention, the timing belt 206 is made of glass fiber material.

In this scheme, the glass fiber material is thin and light, with high strength, suitable for high-speed transmission.

In one embodiment of the present utility model, the distance between two driven wheels 204 on the same installation frame 202 is at least 20 cm.

In one embodiment of the present utility model, the installation frame 202 is arranged obliquely along the end close to the drilling machine 1 .

Finally, it is noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in the form Various changes can be made in the above and in the details without departing from the scope defined by the claims of the present invention.

Claims (6)

1. A low-clearance cast-in-place pile construction device suitable for hard rock formations, comprising: a drilling rig and a drill bit installed on the drilling rig, characterized in that: the drill bit includes a main shaft, and the axis of the main shaft is the central circumference of the main shaft. A plurality of mounting frames are installed in the direction, the main shaft is away from the end of the drilling rig and a plurality of drilling teeth are installed on the mounting frame, and the drilling teeth on the same mounting frame are coaxially connected with driven wheels, and on the mounting frame A driving mechanism is installed, the output end of the driving mechanism is connected with a driving wheel, and the driving mechanism is used to drive the driving wheel to rotate, and the driven wheel on the same mounting frame is connected with the driving wheel through a synchronous belt so that the The drill teeth rotate synchronously. 2. The low-clearance cast-in-place pile construction device suitable for use under hard rock formations according to claim 1, characterized in that: a connecting rod is installed on the axis of the driven wheel, and the connecting rod is centered on the axis direction of the connecting rod A plurality of sliding grooves are provided, and a block capable of sliding along the sliding groove is connected by a spring in the sliding groove, and a connecting hole matched with the connecting rod and a locking groove communicated with the connecting hole are provided on the drill teeth. The slot engages with or disengages from the block so that the drill tooth and the connecting rod are fixed or disengaged. 3. The low-clearance cast-in-situ pile construction device applicable to hard rock formations according to claim 1, characterized in that: a tensioning wheel connected with a synchronous belt is installed on the mounting frame, and moving the tensioning wheel can Adjust the tightness of the timing belt. 4. The low-clearance cast-in-situ pile construction device suitable for use under hard rock formations according to claim 1, wherein the distance between two driven wheels on the same installation frame is at least 20cm. 5. The low-clearance cast-in-situ pile construction device suitable for hard rock formations according to claim 1, characterized in that: the installation frame is arranged obliquely along the side close to the drilling rig. 6. The construction device for cast-in-situ piles with low clearance under hard rock formations according to claim 1, characterized in that: the timing belt is made of glass fiber material.

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