Foundation pit excavation drilling device for construction

Abstract

The utility model relates to the technical field of constructional engineering, in particular to a foundation pit excavation drilling device for construction, which comprises an excavator, a driving device is mounted on a movable arm of the excavator, a spiral drill bit is fixedly mounted at the output end of the driving device, and a plurality of impact components are fixedly arranged on spiral blades of the spiral drill bit. The impact assembly comprises a fixing seat fixedly installed on a spiral blade of the spiral drill bit, the fixing seat is obliquely arranged on the spiral blade of the spiral drill bit, an impact head is rotationally arranged on the downward side of the fixing seat, and an impact assembly used for promoting the impact head to vibrate is arranged in the fixing seat. By arranging the impact assembly and the impact assembly, the impact head is made to vibrate at high frequency, impact force is generated, rocks can be effectively broken, the device can adapt to more complex geological conditions in cooperation with the cutting effect of the spiral drill bit, and especially the drilling efficiency can be remarkably improved in the foundation pit excavation scene with many rock layers.

Description

Technical Field

[0001] The utility model relates to the technical field of construction engineering, in particular to a drilling device for foundation pit excavation during construction. Background Art

[0002] The foundation of a building is particularly important, which is directly related to the safety of the building. When constructing the foundation, it is necessary to pre-mark the treated foundation, and then drill holes at each marked point for pouring concrete piles. The hole depth is selected according to the soil geology.

[0003] A building foundation drilling device disclosed in Chinese Patent Publication No. CN116181218B drives a drill rod to rotate through power. The spiral blades on the drill rod cut and transport the soil to the ground. However, compared with the foundation drilling devices proposed in related fields and the prior art, the existing spiral drill bits mainly rely on the cutting action of the spiral blades to drill holes. They can handle softer soil layers well, but when encountering hard rocks or high-hardness soil layers, the cutting effect is not good. It lacks an effective crushing mechanism and is difficult to break hard substances, resulting in extremely low drilling efficiency or even inability to drill, which limits its application under complex geological conditions. Summary of the Utility Model

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art, solve the problems mentioned in the background art, and provide a drilling device for foundation pit excavation during construction.

[0005] The purpose of the utility model is achieved through the following technical solutions: A drilling device for foundation pit excavation during construction includes an excavator. A driving device is installed on the boom of the excavator. The output end of the driving device is fixedly installed with a spiral drill bit. A plurality of impact components are fixedly arranged on the spiral blades of the spiral drill bit. The impact component includes a fixed seat fixedly installed on the spiral blade of the spiral drill bit. The fixed seat is inclined on the spiral blade of the spiral drill bit. An impact head is rotatably arranged on the downward side of the fixed seat. An impact component for causing the impact head to vibrate is arranged inside the fixed seat. An installation groove is formed inside the fixed seat. The impact component includes a sliding member slidably arranged inside the installation groove. The sliding member is connected with the end face of the installation groove through an elastic member. A plurality of convex blocks are fixedly arranged at one end of the impact head close to the sliding member. A plurality of grooves are formed at one end of the sliding member facing the convex blocks. A punch pin is fixedly arranged at the center of the sliding member. An impact groove is formed at the position of the impact head corresponding to the punch pin.

[0006] Preferably, a clamping groove is formed on the outer surface of the impact head located inside the installation groove, and a clamping member adapted to the clamping groove is inserted on the fixed seat.

[0007] Preferably, the installation groove is a columnar groove, and a plurality of sliding blocks are fixedly arranged on the outer surface of the sliding member. Sliding grooves are formed in the installation groove at positions corresponding to the plurality of sliding blocks.

[0008] Preferably, the cross-sectional shape of the convex block is triangular, and the groove is a rectangular groove.

[0009] Preferably, the number of the grooves is twice the number of the convex blocks.

[0010] Preferably, the engaging groove is an annular groove, and an arc surface is formed at one end of the engaging member that cooperates with the engaging groove.

[0011] Beneficial effects:

[0012] For the drilling device for foundation pit excavation in construction, by setting the impact component and the impact assembly, the impact head performs high-frequency vibration to generate impact force, which can effectively break rocks. With the cutting action of the spiral drill bit, the device can adapt to more complex geological conditions. Especially in the foundation pit excavation scenario with more rock layers, the drilling efficiency can be significantly improved. Description of the drawings

[0013] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0014] Figure 1 It is a schematic structural diagram of the excavator of the present invention;

[0015] Figure 2 It is a schematic structural diagram of the first perspective of the spiral drill bit of the present invention;

[0016] Figure 3 It is a schematic structural diagram of the second perspective of the spiral drill bit of the present invention;

[0017] Figure 4 It is a schematic structural diagram of the impact component of the present invention;

[0018] Figure 5 It is a schematic structural diagram of the inside of the fixed seat of the present invention;

[0019] Figure 6 It is a disassembled structural diagram of the engaging member and the engaging groove of the present invention;

[0020] Figure 7 It is a schematic structural diagram of the impact groove of the present invention;

[0021] Figure 8 This is a schematic structural view of the impact assembly of the present utility model;

[0022] Figure 9 This is a schematic structural view of the first perspective of the impact head of the present utility model;

[0023] Figure 10 This is a schematic structural view of the second perspective of the impact head of the present utility model.

[0024] In the figure: 1, excavator; 2, driving device; 3, screw drill bit; 4, impact assembly; 401, fixed seat; 4011, installation groove; 4012, engaging member; 4013, sliding groove; 402, impact head; 4021, engaging groove; 4022, convex block; 4023, impact groove; 5, impact assembly; 501, sliding member; 5011, slider; 502, elastic member; 503, groove; 504, firing pin. Specific embodiments

[0025] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific situations.

[0026] The additional aspects and advantages of the present utility model will be further given in the following description with reference to the drawings, and some will become obvious from the following description or be understood through the practice of the present utility model.

[0027] As Figures 1 to 10 shown, a drilling device for foundation pit excavation in construction includes an excavator 1. A driving device 2 is installed on the boom of the excavator 1. The output end of the driving device 2 is fixedly installed with a screw drill bit 3, and a plurality of impact assemblies 4 are fixedly provided on the screw blades of the screw drill bit 3; the impact assembly 4 includes a fixed seat 401 fixedly installed on the screw blade of the screw drill bit 3. The fixed seat 401 is inclined on the screw blade of the screw drill bit 3. An impact head 402 is rotatably provided on the downward side of the fixed seat 401, and an impact assembly 5 for causing the impact head 402 to vibrate is provided inside the fixed seat 401.

[0028] As Figures 5 to 7As shown in the figure, an installation groove 4011 is provided inside the fixing base 401. A clamping groove 4021 is provided on the outer surface of the impact head 402 located inside the installation groove 4011. A clamping member 4012 adapted to the clamping groove 4021 is inserted into the fixing base 401. The clamping groove 4021 is an annular groove. An arc surface is formed at one end of the clamping member 4012 that cooperates with the clamping groove 4021. By using the provided clamping member 4012, one end of the impact head 402 can be locked inside the installation groove 4011 to ensure the stability of the impact head 402 during use. At the same time, the impact head 402 can be replaced by removing the clamping member 4012.

[0029] As Figures 5 to 9 shown in the figure, the impact assembly 5 includes a sliding member 501 slidably disposed inside the installation groove 4011. The sliding member 501 and the end surface of the installation groove 4011 are cooperatively connected through an elastic member 502. A plurality of protrusions 4022 are fixedly provided at one end of the impact head 402 close to the sliding member 501. A plurality of grooves 503 are provided at one end of the sliding member 501 facing the protrusions 4022. A firing pin 504 is fixedly provided at the center of the sliding member 501. An impact groove 4023 is provided at the position of the impact head 402 corresponding to the firing pin 504. The installation groove 4011 is a columnar groove. A plurality of sliding blocks 5011 are fixedly provided on the outer surface of the sliding member 501. A plurality of sliding grooves 4013 are provided at the positions of the installation groove 4011 corresponding to the plurality of sliding blocks 5011. The cross-sectional shape of the protrusion 4022 is triangular. The groove 503 is a rectangular groove. The number of grooves 503 is twice the number of protrusions 4022. During use, the elastic member 502 can be replaced by removing the clamping member 4012, so that the elastic member 502 can maintain its elasticity.

[0030] As Figures 5 to 9 shown in the figure, when the impact head 402 rotates, the protrusion 4022 will disengage from the groove 503. Thus, the protrusion 4022 can be used to push the sliding member 501 to slide away from the impact head 402. At this time, the elastic member 502 is in a contracted state. When the protrusion 4022 corresponds to the groove 503 again, the elastic member 502 will cause the sliding member 501 to slide towards the impact head 402. At this time, the firing pin 504 will collide with the impact groove 4023. By continuously rotating the impact head 402, the firing pin 504 continuously collides with the impact groove 4023, causing the impact head 402 to vibrate at a high frequency and generate an impact force, which can effectively break rocks. In cooperation with the cutting action of the spiral drill bit 3, the device can adapt to more complex geological conditions. Especially in the foundation pit excavation scenario with more rock layers, the drilling efficiency can be significantly improved (the impact assembly 5 vibrates the impact head 402 to break rocks, which can reduce the direct acting force and friction degree of the drill bit cutting rocks, extend the service life of the drill bit, reduce the construction cost and the drill bit replacement frequency, and ensure the construction continuity). At the same time, the vibration can make the broken rock debris more easily discharged from the drill hole, avoid debris accumulation affecting the drilling progress, and thus shorten the overall drilling time and improve the construction efficiency.

[0031] The working process is as follows:

[0032] S1. As shown in Figures 1 to 3 , when excavating the foundation pit, drive the excavator 1 to the designated position, and then control the spiral drill bit 3 to align with the point through the boom of the excavator 1;

[0033] S2. As shown in Figures 1 to 3 , when the spiral drill bit 3 is aligned, control the spiral drill bit 3 to rotate through the driving device 2, so that the spiral drill bit 3 drills into the soil;

[0034] S3. As shown in Figures 5 to 9 , when the spiral drill bit 3 is drilling, utilize the fixed seat 401 and the impact head 402, so that before the spiral drill bit 3 encounters a rock, the impact head 402 can contact the rock in advance, and thus generate self-rotation through the friction between the impact head 402 and the rock or soil;

[0035] S4. As shown in Figures 5 to 9 , when the impact head 402 rotates self, the convex block 4022 will disengage from the groove 503, so that the convex block 4022 can push the sliding member 501 to slide away from the impact head 402, and at this time the elastic member 502 is in a contracted state;

[0036] S5. As shown in Figures 5 to 9 , when the convex block 4022 corresponds to the groove 503 again, the elastic member 502 will urge the sliding member 501 to slide towards the impact head 402, and at this time the firing pin 504 will collide with the impact groove 4023;

[0037] S6. As shown in Figures 5 to 9 , utilize the continuous rotation of the impact head 402, so that the firing pin 504 continuously collides with the impact groove 4023, make the impact head 402 vibrate at a high frequency, generate an impact force, can effectively break the rock, and cooperate with the cutting action of the spiral drill bit 3, the device can adapt to more complex geological conditions, especially in the foundation pit excavation scenario with more rock layers, and can significantly improve the drilling efficiency.

[0038] The above shows and describes the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will have various changes and improvements, and these changes and improvements all fall within the scope of the present utility model claimed.

Claims

1. A construction foundation pit excavation drilling device, characterized in that: It comprises an excavator (1), wherein a driving device (2) is installed on a movable arm of the excavator (1), a spiral drill bit (3) is fixedly installed on the output end of the driving device (2), and a plurality of impact assemblies (4) are fixedly provided on the spiral blades of the spiral drill bit (3); The impact assembly (4) comprises a fixing seat (401) fixedly mounted on the spiral blade of the spiral drill bit (3); the fixing seat (401) is arranged obliquely on the spiral blade of the spiral drill bit (3); an impact head (402) is rotatably arranged on a downward side of the fixing seat (401); and an impact assembly (5) for causing the impact head (402) to vibrate is arranged inside the fixing seat (401); The fixing seat (401) is provided with a mounting groove (4011) inside, and the impact assembly (5) comprises a sliding member (501) slidably arranged inside the mounting groove (4011), the sliding member (501) and the end surface of the mounting groove (4011) are matched and connected via an elastic member (502), a plurality of protrusions (4022) are fixedly provided at one end of the impact head (402) close to the sliding member (501), a plurality of grooves (503) are provided at one end of the sliding member (501) facing the protrusions (4022), a striker (504) is fixedly provided at the center of the sliding member (501), and a striker groove (4023) is provided at the impact head (402) at a position corresponding to the striker (504).

2. A construction foundation pit excavation drilling device according to claim 1, characterized in that: The outer surface of the impact head (402) located inside the installation groove (4011) is provided with a snap-fitting groove (4021), and the fixing seat (401) is plugged with a snap-fitting piece (4012) that matches the snap-fitting groove (4021).

3. A construction foundation pit excavation and drilling device according to claim 2, characterized in that: The installation groove (4011) is a columnar groove, a plurality of sliding blocks (5011) are fixedly provided on the outer surface of the sliding member (501), and sliding grooves (4013) are provided at positions of the installation groove (4011) corresponding to the plurality of sliding blocks (5011).

4. A construction foundation pit excavation and drilling device according to claim 2, characterized in that: The cross-sectional shape of the protrusion (4022) is a triangle, and the groove (503) is a rectangular groove.

5. A construction foundation pit excavation and drilling device according to claim 4, characterized in that: The number of the grooves (503) is twice the number of the bumps (4022).

6. A construction foundation pit excavation and drilling device according to claim 2, characterized in that: The engaging groove (4021) is an annular groove, and one end of the engaging member (4012) that cooperates with the engaging groove (4021) is formed with an arc surface.

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