Pile hole trimmer

Abstract

The utility model relates to a pile hole trimmer, which relates to the technical field of engineering construction, and comprises a cutterhead framework, a rectangular trimming cutterhead arranged on the cutterhead framework, and a locking assembly arranged on the cutterhead framework and used for locking the cutterhead framework on a rotary drilling rig, and the rotary drilling rig drives the cutterhead framework to move downwards and trims the guide hole through the rectangular trimming cutterhead. The guide hole construction is carried out on the four corners and the middle of the slide-resistant pile pit through the rotary drilling rig, then after the drill bit is taken out of the rotary drilling rig, the cutter head framework is locked on the rotary drilling rig through the locking assembly, and the rotary drilling rig drives the cutter head framework to slide downwards in the axis direction of the guide hole; the edge of the anti-slide pile pit is trimmed through the cutting edge on the rectangular trimming cutter head, so that the anti-slide pile pit is trimmed into a regular rectangular structure, the equipment damage probability is reduced, and the construction efficiency is improved.

Description

Technical Field

[0001] The present application relates to the technical field of engineering construction, and in particular to a pile hole trimmer. Background Art

[0002] Anti-slide piles are piles that penetrate the landslide body and penetrate deep into the sliding bed to stabilize the slope. The anti-slide piles are made by digging pile holes and then pouring reinforced soil mixture into the pile holes. Since rectangular anti-slide piles are better than circular anti-slide piles in resisting thrust, the designed anti-slide piles are mainly rectangular piles.

[0003] The existing technology mostly uses manual excavation, and for relatively deep pile holes, square drills are used for excavation through piling. However, for areas with relatively hard geology, if square drills are used for excavation, on the one hand, equipment damage is likely to occur, and on the other hand, special equipment is required, which is not conducive to construction. Utility Model Content

[0004] In order to reduce equipment damage and improve construction efficiency, the present application provides a pile hole trimmer.

[0005] The present application provides a pile hole trimmer, which adopts the following technical solution:

[0006] A pile hole trimmer comprises a cutter disc frame, a rectangular trimming cutter disc arranged on the cutter disc frame, and a locking component arranged on the cutter disc frame and used to lock the cutter disc frame on a rotary drilling rig. The rotary drilling rig drives the cutter disc frame to move downward and trims the guide hole through the rectangular trimming cutter disc.

[0007] By adopting the above technical scheme, the rotary drilling rig constructs guide holes for the four corners and the middle of the anti-sliding pile pit. Then, after the drill bit is taken out from the rotary drilling rig, the cutter head frame is locked on the rotary drilling rig through the locking assembly. The rotary drilling rig drives the cutter head frame to slide downward along the axis of the guide hole, and the edge of the anti-sliding pile pit is trimmed by the blade on the rectangular trimming cutter head, so that the anti-sliding pile pit is trimmed into a regular rectangular structure, thereby reducing the probability of equipment damage and improving construction efficiency.

[0008] Further, the locking assembly comprises:

[0009] A connector, the connector is arranged on the cutter head frame, and the connector is provided with a mounting hole for facilitating plug-in cooperation with the rotary drilling rig;

[0010] A positioning mandrel is provided, wherein the positioning mandrel passes through a side wall of the connector and is inserted and arranged on the rotary drilling rig, and the positioning mandrel locks the connector on the rotary drilling rig.

[0011] By adopting the above technical solution, the rotary drilling rig is plugged into the installation hole, the positioning mandrel passes through the side wall of the connector and is plugged into and installed on the rotary drilling rig, and the connector is locked on the rotary drilling rig by the positioning mandrel, thereby realizing a detachable connection between the connector and the rotary drilling rig.

[0012] Furthermore, a plurality of groups of reinforcing steel plates are provided in a divergent shape on the outer periphery of the connector, and the plurality of groups of reinforcing steel plates are connected to the cutter disc frame.

[0013] By adopting the above technical solution, the connector is fixedly connected to the cutter head frame through multiple sets of reinforcing steel plates, thereby enhancing the connection strength between the connector and the cutter head frame.

[0014] Furthermore, the rectangular trimming cutter disc is a tapered rectangular tube structure, and the rectangular trimming cutter disc is sleeved on the outer side of the cutter disc frame. The closer the rectangular trimming cutter disc is to the rotary drilling rig, the smaller the cross-section of the rectangular trimming cutter disc is.

[0015] By adopting the above technical solution, by setting the rectangular trimming cutter disc as a tapered rectangular tube structure, the bottom of the rectangular trimming cutter disc can better trim the lead hole, thereby improving the trimming efficiency of the rectangular trimming cutter disc.

[0016] Furthermore, a positioning frame for positioning is provided on the cutter disc skeleton, and an outer side wall of the positioning frame is slidably abutted against an inner side wall of the pile hole after trimming by the rectangular trimming cutter disc.

[0017] By adopting the above technical scheme, the rotary drilling rig drives the rectangular trimming cutter disc to trim the guide hole, and the outer wall of the positioning frame is pressed against the inner wall of the pile hole after the rectangular trimming cutter disc trims the guide hole, so as to position and guide the rectangular trimming cutter disc and improve the trimming accuracy of the rectangular trimming cutter disc.

[0018] Furthermore, the positioning frame is composed of a guide part and a positioning part that are interconnected. The guide part is a tapered rectangular tube structure that is arranged on the cutter disc frame. The closer the guide part is to the rectangular trimming cutter disc, the smaller the cross-section of the guide part is. The positioning part is a rectangular tube that is arranged on the side of the guide part away from the rectangular trimming cutter disc. The outer wall of the positioning part is pressed against the inner wall of the pile hole after trimming by the rectangular trimming cutter disc.

[0019] By adopting the above technical solution, the guide part facilitates the movement of the positioning frame in the pile hole, and the positioning part facilitates pressing against the inner wall of the pile hole and positioning and guiding the rectangular trimming cutter disc, thereby improving the trimming accuracy of the rectangular trimming cutter disc.

[0020] Furthermore, a plurality of discharge ports for impurities to fall off are provided on the inclined surface of the rectangular trimming cutter disc.

[0021] By adopting the above technical solution, the discharge port allows impurities in the gap between the outer wall of the rectangular trimming cutter disc and the inner wall of the pile hole to fall into the pile hole, thereby improving the trimming accuracy of the trimmer.

[0022] Furthermore, a blade for trimming the guide hole is provided on the side of the rectangular trimming cutter disc away from the rotary drilling rig.

[0023] By adopting the above technical solution, the rectangular trimming cutter disc cuts the anti-slip pile pit with the blade, so as to facilitate trimming of the pile hole.

[0024] Furthermore, the cutter disc skeleton is a frame structure, and a plurality of discharge holes for impurities to fall are provided on the cutter disc skeleton.

[0025] By adopting the above technical solution, the discharge hole makes it easy for the soil impurities on the cutter disc skeleton to fall into the bottom of the anti-slip pile pit in time, thereby reducing the impact of the soil impurities on the cutter disc skeleton and improving the trimming accuracy of the trimmer.

[0026] In summary, the present application includes at least one of the following beneficial technical effects:

[0027] 1. Use a rotary drilling rig to construct guide holes at the four corners and the middle of the anti-sliding pile pit. Then, after taking the drill bit out of the rotary drilling rig, insert the rotary drilling rig into the connector. Lock the connector on the rotary drilling rig by positioning the mandrel. The rotary drilling rig drives the cutterhead skeleton to slide downward along the axis of the guide hole. The edge of the anti-sliding pile pit is trimmed by the blade on the rectangular trimming cutterhead, so that the anti-sliding pile pit is trimmed into a regular rectangular structure, thereby reducing the probability of equipment damage and improving construction efficiency.

[0028] 2. The rectangular trimming cutter disc is driven by the rotary drilling rig to trim the guide hole, and the outer wall of the positioning frame is pressed against the inner wall of the pile hole after the rectangular trimming cutter disc trims the hole, so as to position and guide the rectangular trimming cutter disc and improve the trimming accuracy of the rectangular trimming cutter disc. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural diagram of a trimmer according to Embodiment 1 of the present application;

[0030] Figure 2 is a top view of the anti-sliding pile pit of the present application, which shows the anti-sliding pile pit after the rotary drill has bored holes in the four corners and the middle;

[0031] Figure 3 yes Figure 1 The enlarged schematic diagram of the middle A part;

[0032] Figure 4 is a schematic diagram of the structure of the trimmer of Example 2 of the present application;

[0033] Figure 5 is a top view of the anti-slip pile pit of Example 2 of the present application, which shows the anti-slip pile pit when the trimmer is trimming the lead hole;

[0034] Figure 6 yes Figure 5 Schematic diagram of the cross section of BB.

[0035] Figure numerals: 1. cutter disc frame; 11. discharge hole; 12. reinforcement steel plate; 2. rectangular trimming cutter disc; 21. blade; 22. discharge port; 3. locking assembly; 31. connector; 32. positioning through-rod; 4. guide hole; 5. positioning frame; 51. guide part; 52. positioning part; 6. rotary drilling rig. DETAILED DESCRIPTION

[0036] The following is combined with Figure 1-6 This application is described in further detail.

[0037] The embodiment of the present application discloses a pile hole trimmer.

[0038] Example 1

[0039] Reference Figure 1 and Figure 2 A pile hole trimmer includes a cutter head frame 1, a rectangular trimming cutter head 2 arranged on the cutter head frame 1, and a locking component 3 arranged on the cutter head frame 1 and used to lock the cutter head frame 1 on a rotary drilling rig 6. The rotary drilling rig 6 drives the cutter head frame 1 to move downward and trims the guide hole 4 through the rectangular trimming cutter head 2.

[0040] Reference Figure 1 and Figure 2 , a drill bit is installed on the rotary drilling rig 6, and rotary holes are drilled from top to bottom at the four corners of the anti-sliding pile pit, and the rotary holes are made tangent to the adjacent two sides of the anti-sliding pile pit. The rotary drilling rig 6 is driven to the designed pile bottom elevation at one time, and then after the construction of the four guide holes 4 at the four corners is completed, a hole is drilled in the middle position between the four corners to complete the construction of the anti-sliding pile pit guide hole 4; there are 2 rotary holes in the middle position between the four corners of this embodiment.

[0041] Reference Figure 1 The cutter head frame 1 is a frame structure of I-beams welded into a "M" shape. A plurality of discharge holes 11 for impurities to fall are opened on the cutter head frame 1, so as to facilitate the soil impurities on the cutter head frame 1 to fall into the bottom of the anti-slip pile pit in time.

[0042] Reference Figure 1 and Figure 3The locking assembly 3 includes a connector 31 and a positioning through-rod 32. The connector 31 is fixedly mounted on the upper surface of the cutterhead skeleton 1. The connector 31 is located at the center of the cutterhead skeleton 1. A mounting hole is provided on the connector 31 in a direction perpendicular to the upper surface of the cutterhead skeleton 1 for plugging and matching the rotary drilling rig 6. The outer periphery of the connector 31 is divergently mounted with multiple groups of reinforcing steel plates 12. The reinforcing steel plates 12 are of a right-angled triangle structure. The two right-angled sides of the reinforcing steel plates 12 are respectively fixedly connected to the side walls of the connector 31 and the upper surface of the cutterhead skeleton 1. The reinforcing steel plates 12 are both located in the middle of the I-beam. The positioning through-rod 32 passes through the side walls of the connector 31 and is plugged and mounted on the rotary drilling rig 6. The connector 31 is locked on the rotary drilling rig 6 by the positioning through-rod 32, thereby realizing the detachable connection between the connector 31 and the rotary drilling rig 6.

[0043] Reference Figure 1 and Figure 2 The rectangular trimming cutter disc 2 is composed of multiple groups of cutting plates, which are fixedly installed around the cutter disc frame 1 and form a tapered rectangular tube structure. The closer the rectangular trimming cutter disc 2 is to the rotary drilling rig 6, the smaller the cross-section of the rectangular trimming cutter disc 2 is. A blade 21 for trimming the guide hole 4 is fixedly installed on the side of the trimming cutter disc away from the rotary drilling rig 6; 4 groups of cutting plates are provided in this embodiment.

[0044] Reference Figure 1 , Figure 2 and Figure 3 When the construction of the guide hole 4 of the anti-sliding pile pit is completed, the soil inside the guide hole 4 is first taken out, and then the drill bit of the rotary drilling rig 6 is taken out. According to the physical properties of the sandstone of this project, a suitable material is selected to make the blade 21, and then the rotary drilling rig 6 is inserted into the connector 31 and the cutter head skeleton 1 is locked on the rotary drilling rig 6 through the positioning core rod 32. Driven by the rotary drilling rig 6, the cutter head skeleton 1 moves downward along the axis direction of the guide hole 4, and the edge of the anti-sliding pile pit is trimmed by the blade 21 on the rectangular trimming cutter head 2, and finally the sediment at the bottom of the anti-sliding pile pit is cleaned up, so as to form a rectangular anti-sliding pile pit.

[0045] The working principle of Example 1 of the present application is:

[0046] The guide hole 4 is constructed at the four corners and the middle of the anti-sliding pile pit by the rotary drilling rig 6. Then, after the drill bit is removed from the rotary drilling rig 6, the rotary drilling rig 6 is inserted into the connector 31. The connector 31 is locked on the rotary drilling rig 6 by positioning the core rod 32. The rotary drilling rig 6 drives the cutter head skeleton 1 to slide downward along the axis direction of the guide hole 4. The edge of the anti-sliding pile pit is trimmed by the blade 21 on the rectangular trimming cutter head 2, so that the anti-sliding pile pit is trimmed into a regular rectangular structure, thereby reducing the probability of equipment damage and improving construction efficiency.

[0047] Example 2

[0048] Reference Figure 4 The difference between this embodiment and embodiment 1 is that a positioning frame 5 for positioning is provided on the cutter disc skeleton 1, and the outer wall of the positioning frame 5 slides against the inner wall of the pile hole after the rectangular trimming cutter disc 2 is trimmed, so as to position and guide the rectangular trimming cutter disc 2 and improve the trimming accuracy of the rectangular trimming cutter disc 2.

[0049] Reference Figure 4 and Figure 5 The positioning frame 5 is composed of a guiding portion 51 and a positioning portion 52 which are connected to each other. The guiding portion 51 is fixedly mounted on the cutter disc frame 1. The guiding portion 51 is a tapered rectangular tube structure. The closer the guiding portion 51 is to the rectangular trimming cutter disc 2, the smaller the cross section of the guiding portion 51 is. The guiding portion 51 is fixedly connected to the top of the rectangular trimming cutter disc 2. The positioning portion 52 is a rectangular tube which is fixedly mounted on the side of the guiding portion 51 away from the rectangular trimming cutter disc 2. The cross-sectional structure of the positioning portion 52 is the same as the pile hole structure of the anti-slip pile pit design. The outer portion of the positioning portion 52 is pressed against the inner side wall of the pile hole after trimming of the rectangular trimming cutter disc 2. The connection between the guiding portion 51 and the positioning portion 52 has a certain guiding curvature.

[0050] Reference Figure 4 and Figure 6 Since the positioning frame 5 is in contact with the inner wall of the pile hole, some impurities on the inner wall of the pile hole can easily fall into the gap between the outer wall of the rectangular trimming cutter disc 2 and the inner wall of the pile hole. Therefore, a plurality of groups of discharge ports 22 are arranged at intervals on the inclined surface of the rectangular trimming cutter disc 2. The plurality of groups of discharge ports 22 allow the impurities falling on the outer wall of the rectangular trimming cutter disc 2 to fall into the pile hole, thereby improving the trimming accuracy of the trimmer.

[0051] The working principle of Example 2 of the present application is:

[0052] The rectangular trimming cutter disc 2 is driven by the rotary drilling rig 6 to trim the guide hole 4, and the outer wall of the positioning frame 5 is pressed against the inner wall of the pile hole after the rectangular trimming cutter disc 2 trims the guide hole, so as to position and guide the rectangular trimming cutter disc 2 and improve the trimming accuracy of the rectangular trimming cutter disc 2.

[0053] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A pile hole trimmer, characterized in that: The invention comprises a cutterhead frame (1), a rectangular trimming cutterhead (2) arranged on the cutterhead frame (1), and a locking component (3) arranged on the cutterhead frame (1) and used for locking the cutterhead frame (1) on a rotary drilling rig (6); the rotary drilling rig (6) drives the cutterhead frame (1) to move downward and trims the guide hole (4) through the rectangular trimming cutterhead (2).

2. A pile hole trimmer according to claim 1, characterized in that: The locking assembly (3) comprises: A connector (31), the connector (31) being arranged on the cutter head frame (1), and the connector (31) being provided with a mounting hole for facilitating plug-in matching of the rotary drilling rig (6); A positioning mandrel (32) passes through a side wall of the connector (31) and is inserted and arranged on the rotary drilling rig (6); the positioning mandrel (32) locks the connector (31) on the rotary drilling rig (6).

3. A pile hole trimmer according to claim 2, characterized in that: The outer periphery of the connector (31) is provided with a plurality of groups of reinforcing steel plates (12) in a divergent shape, and the plurality of groups of reinforcing steel plates (12) are connected to the cutter head frame (1).

4. A pile hole trimmer according to claim 1, characterized in that: The rectangular trimming cutter disc (2) is a tapered rectangular tube structure. The rectangular trimming cutter disc (2) is sleeved on the outside of the cutter disc frame (1). The closer the rectangular trimming cutter disc (2) is to the rotary drilling rig (6), the smaller the cross section of the rectangular trimming cutter disc (2) becomes.

5. A pile hole trimmer according to claim 4, characterized in that: A positioning frame (5) for positioning is provided on the cutter disc skeleton (1), and an outer side wall of the positioning frame (5) is in sliding contact with an inner side wall of the pile hole of the rectangular trimming cutter disc (2) after trimming.

6. A pile hole trimmer according to claim 5, characterized in that: The positioning frame (5) is composed of a guide portion (51) and a positioning portion (52) connected to each other. The guide portion (51) is a tapered rectangular tube structure arranged on the cutter disc frame (1). The closer the guide portion (51) is to the rectangular trimming cutter disc (2), the smaller the cross section of the guide portion (51) is. The positioning portion (52) is a rectangular tube arranged on a side of the guide portion (51) away from the rectangular trimming cutter disc (2). The outer side wall of the positioning portion (52) is pressed against the inner side wall of the pile hole of the rectangular trimming cutter disc (2) after trimming.

7. A pile hole trimmer according to claim 4, characterized in that: The inclined surface of the rectangular trimming cutter disc (2) is provided with a plurality of discharge openings (22) for impurities to fall off.

8. A pile hole trimmer according to claim 4, characterized in that: A blade (21) for trimming the guide hole (4) is provided on the side of the rectangular trimming cutter disc (2) away from the rotary drilling rig (6).

9. The pile hole trimmer according to claim 1, characterized in that: The cutter disc skeleton (1) is a frame structure, and a plurality of discharge holes (11) for impurities to fall out are provided on the cutter disc skeleton (1).

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