A ground excavation drilling device

Abstract

The present invention discloses a ground excavation drilling device, which is applied in the field of seismic exploration, and comprises a drilling unit and a transport unit arranged above the drilling unit, wherein the drilling unit comprises a drill bit fixedly arranged at the end of a drill rod and a driving motor connected to the drill rod, and the transport unit comprises a conveyor belt arranged above the driving motor and a one-way blade fixedly arranged on the conveyor belt, wherein the conveyor belt transports the crushed soil turned up by the drill bit below the double-layer wellbore in a double-layer wellbore and sends it to the wellbore mouth of the double-layer wellbore to throw out the crushed soil; the present invention has a novel design and a reasonable structure, can realize rapid excavation, fast hole-forming speed, greatly improves the field construction efficiency, and can also extend the double-layer wellbore and the conveyor belt with the one-way blades as needed to smoothly realize excavation, and if hard and difficult-to-crush objects are encountered during the well excavation process, the inclined wellbore can be connected to slightly change the drilling direction to meet the construction needs.

Description

Technical Field

[0001] The invention relates to the field of seismic exploration, in particular to a ground excavation drilling device. Background Art

[0002] During seismic exploration, drilling in thick soil is an important step. It requires digging several to dozens of meters deep and placing explosives to achieve a good seismic effect. In the past, Luoyang shovels were often used to drill holes. Drilling holes more than ten meters deep usually takes a long time, is laborious and has low excavation efficiency.

[0003] In order to excavate quickly and efficiently, it is necessary to develop an easy-to-use and fast excavation and drilling equipment. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a ground excavation drilling device, which greatly shortens the hole-making time, has a fast excavation speed and a high efficiency in placing explosives.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0006] The present invention includes a drilling unit and a transport unit arranged above the drilling unit, the drilling unit includes a drill bit fixedly arranged at the end of a drill rod and a drive motor connected to the drill rod, the transport unit includes a conveyor belt arranged above the drive motor with waterproof protection and a one-way blade fixedly arranged on the conveyor belt, the conveyor belt transports the crushed soil turned up by the drill bit below the double-layer wellbore in the double-layer wellbore to the wellbore mouth of the double-layer wellbore to throw out the crushed soil.

[0007] A further improvement of the present invention is that the double-layer wellbore includes a first wellbore and a second wellbore arranged inside the first wellbore, a gap is provided between the first wellbore and the second wellbore, the conveyor belt moves downward along the gap to below the first wellbore and the second wellbore, the one-way blades lift up the crushed soil, and under the action of the conveyor belt, it moves upward along the inside of the second wellbore.

[0008] A further improvement of the present invention is that a first fixed plate and a second fixed plate which are integrally connected to the first and second shafts are fixedly arranged between the first shaft and the second shaft, and the first fixed plate and the second fixed plate divide the gap into an electric wire passing area and a conveyor belt downward passing area.

[0009] A further improvement of the present invention is that the first wellbore and the second wellbore are connected to a wellbore support fixedly arranged on the ground, the wellbore support includes a leg and a clamping ring fixedly connected to the leg, and the clamping ring is slidably connected to the outer wall of the first wellbore.

[0010] A further improvement of the present invention is that the conveyor belt is driven by a rotating wheel arranged obliquely above the shaft.

[0011] A further improvement of the present invention is that: a fan-type soil-turning blade is fixedly provided on the driving motor, and the soil-turning blade is arranged corresponding to the one-way blade.

[0012] A further improvement of the present invention is that the driving motor is fixedly arranged on a motor bracket, and the motor bracket is fixedly connected to the bottom of the first shaft.

[0013] A further improvement of the present invention is that a soil rotating blade is fixedly provided on the drill rod below the motor bracket.

[0014] A further improvement of the present invention is that the frequency of the unidirectional blades moving upward is consistent with the frequency of the soil turning by the soil turning blades.

[0015] Due to the adoption of the above technical solution, the beneficial effects achieved by the present invention are:

[0016] The invention has a novel design and a reasonable structure, can realize rapid excavation, fast hole-forming speed, and greatly improves field construction efficiency. The double-layer wellbore can be extended as needed to smoothly realize excavation, and water can be injected through the gap between the walls of the double-layer wellbore in the conveying part to cool the motor and the drill bit, thereby improving drilling efficiency and meeting construction needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the internal cross-sectional structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the top view of the double-layer wellbore of the present invention;

[0019] Figure 3 It is a schematic structural diagram of the wellbore support of the present invention.

[0020] Among them, 1. conveyor belt; 2. rotating wheel; 3. gap; 4. first wellbore; 5. second wellbore; 6. one-way blade; 7. downward passing area; 8. supporting legs; 9. soil turning blade; 10. driving motor; 11. motor bracket; 12. soil turning blade; 13. drill rod; 14. drill bit; 15. first fixed plate; 16. wire passing area; 17. second fixed rod; 18. retaining ring. DETAILED DESCRIPTION

[0021] The present invention is further described in detail below in conjunction with embodiments:

[0022] A ground excavation drilling device, such as Figure 1-3 As shown, it includes a drilling unit and a transport unit arranged above the drilling unit. Figure 1As shown, the drilling unit includes a drill bit 14 fixedly arranged at the end of a drill rod 13 and a drive motor 10 connected to the drill rod 13. The drive motor 10 with waterproof protection rotates to drive the drill rod 13 to rotate at high speed, thereby driving the drill bit 14 below the drill rod 13 to rotate to achieve drilling. The drill bit 14 is a diamond triangular drill bit. The diamond has high hardness and the triangular shape makes it easier to drill. The drilled soil, mud, etc. are brought out of the wellbore by the transport unit, which is convenient for deeper drilling.

[0023] The transport unit includes a conveyor belt 1 disposed above a driving motor 10 and one-way blades 6 fixedly disposed on the conveyor belt 1. The one-way blades 6 are regularly distributed on the conveyor belt 1 to smoothly transport the crushed soil. The conveyor belt 1 is composed of a plurality of scale-shaped superimposed conveyor belt assemblies, and the crushed soil turned up by the drill bit 14 below the double-layer wellbore is transported in the double-layer wellbore. The crushed soil is sent to the one-way blades 6, and is sent to the wellbore mouth of the double-layer wellbore under the action of the conveyor belt 1. Then, as the top angle changes, the one-way blades 6 turn over to the outside of the wellbore to throw out the crushed soil.

[0024] The double-layer wellbore comprises a first wellbore 4 and a second wellbore 5 arranged inside the first wellbore 4, and a gap 3 is provided between the first wellbore 4 and the second wellbore 5. Figure 2 As shown, a first fixing plate 15 and a second fixing plate 17 integrally connected to the first shaft 4 and the second shaft 5 are fixedly provided between the first shaft 4 and the second shaft 5, and the first fixing plate 15 and the second fixing plate 17 divide the gap 3 into a wire passing area 16 and a downward passing area 7 of the conveyor belt 1. The wire passing area 16 is arranged so that the power line of the lower driving motor 10 can pass smoothly, so as to meet the normal operation of the drill rod 13. The conveyor belt 1 moves downward along the downward passing area 7 to the bottom of the first shaft 4 and the second shaft 5, and the crushed soil is lifted by the one-way blade 6 at the support rod arranged at the bottom of the second shaft 5, and the crushed soil is brought out of the double-layer shaft along the inner part of the second shaft 5 under the drive of the conveyor belt 1. It should be noted that the driving motor 10 is a waterproof motor, and water can be injected into the downward passing area 7 at any time, so as to facilitate cooling of the driving motor 10 and the drill bit 14, and to cope with the drilling of special soil with high cementation degree and facilitate the upward transportation of loose soil.

[0025] The conveyor belt 1 is driven by a rotating wheel 2 arranged obliquely above the shaft. The rotating wheel 2 is arranged with the same width as the conveyor belt 1, and the rotating wheel 2 covered with small teeth for engaging friction perfectly matches the conveyor belt 1 connected in a scale-like manner. Such an arrangement increases the friction between the rotating wheel 2 and the conveyor belt 1, and avoids the occurrence of slippage of the conveyor belt 1 during the conveying process.

[0026] When the rotating wheel 2 rotates driven by the motor, the conveyor belt 1 with a plurality of one-way blades 6 connected in a scale-like manner moves upward with the rotation of the rotating wheel 2, and transports the crushed soil and mud to the outside of the wellhead. The one-way blades 6 are fixedly connected to the conveyor belt 1 and change continuously with the conveying state of the conveyor belt 1. When the conveyor belt 1 goes down, the one-way blades 6 are in a drooping state, and in a soil-supporting state when going up. When reaching the wellbore mouth, they are in a vertical state to throw the crushed soil out of the well.

[0027] like Figure 1 As shown, when each unidirectional blade 6 reaches the interlocking wheel 2 at the top of the wellbore, as the angle changes, the unidirectional blade 6 transitions from a horizontal state of lifting and crushing soil to a vertical state, and throws the crushed soil out of the wellbore; as the conveyor belt 1 moves, it moves to a drooping state, and then follows the conveyor belt 1 connected in a scale-like manner to descend from the descending passing area 7. When it reaches the bottom of the wellbore, it opens due to the resistance of the soil, and with the assistance of the fan-type soil-turning blades 9, the unidirectional blade 6 shovels up the crushed soil, and drags the crushed soil flatly under the action of gravity, and follows the conveyor belt 1 connected in a scale-like manner to ascend in the second wellbore 5 to the wellbore mouth. When it ascends to the wheel 2 covered with interlocking small teeth, as the bending angle of the conveyor belt 1 changes, the unidirectional blade 6 holding the crushed soil once again changes from horizontal to vertical, and then throws the crushed soil out of the wellbore, and then moves to a drooping state, and follows the conveyor belt 1 connected in a scale-like manner to descend from the descending passing area 7, and repeats this cycle until the hole is formed.

[0028] The first shaft 4 and the second shaft 5 are connected to a shaft support fixedly arranged on the ground. Figure 3 As shown, the shaft support includes a leg 8 and a clamping ring 18 fixedly connected to the leg 8. The leg 8 is detachable and can be replaced with different lengths according to construction needs. The clamping ring 18 is a semicircular arc slightly larger than the outer diameter of the first shaft 4. The clamping ring 18 is slidably connected to the outer wall of the first shaft 4. The end of the leg 8 is firmly inserted into the ground to fix and support the double-layer shaft. The outer wall of the first shaft 4 slides downward along the clamping ring 18 to smoothly achieve drilling.

[0029] like Figure 1 As shown, a fan-type soil-turning blade 9 is fixedly provided on the driving motor 10. The soil-turning blade 9 is arranged corresponding to the one-way blade 6 and does not collide with the one-way blade 6, so that the turned-up broken soil is conveniently placed on the one-way blade 6.

[0030] The driving motor 10 is fixedly arranged on a motor bracket 11, and the motor bracket 11 is fixedly connected to the bottom of the first wellbore 4. A soil rotating blade 12 is fixedly arranged on the drill rod 13 below the motor bracket 11. The soil rotating blade 12 is two or more double-piece side-rotating crushing blades. The setting of the soil rotating blade 12 can rotate the loosened crushed soil near the drill bit 14, making it convenient for the soil turning blade 9 above the soil rotating blade 12 to send the crushed soil to the unidirectional blade 6.

[0031] Adjust the rotation speed of the driving wheel 2 and the driving motor 10 to match the rotation speeds of the two motors to ensure that the upward frequency of the unidirectional blade 6 is consistent with the frequency of the soil turning by the soil turning blade 9, ensuring that the broken soil turned by the soil turning blade 9 is brought out of the wellbore by the unidirectional blade 6 in time.

[0032] The double-layer wellbore sinks as the drill bit 14 sinks. When the length is insufficient, another double-layer wellbore is spliced ​​through the spiral buckle on the upper part of the double-layer wellbore until the requirement is met. If the drill bit 14 encounters a hard and unbreakable solid during the drilling process, a double-layer wellbore with an inclined screw mouth is installed. By changing the gravity on the side of the wellbore wall, the drill bit 14 avoids the hard ground and makes an inclined hole until the required sufficient depth is reached. While the double-layer wellbore is being extended, the scale-type connecting conveyor belt 1 is also extended accordingly. When the well depth reaches the required depth, a second set of wellbore supports is set up above the wellbore, and a second set of movable pulleys driven by a motor are placed on the top of the supports. The double-layer wellbore is pulled upward through the movable pulleys, and the double-layer wellbore that is put in and the drive motor 10 and drilling equipment at the bottom of the double-layer wellbore are taken out section by section.

[0033] Finally, it should be noted that the above embodiments are only examples for the purpose of clearly explaining the present invention and are by no means limiting of the implementation methods. For those skilled in the art, other different forms of changes or modifications can be made based on the above descriptions. It is impossible to list all the implementation methods here, and the obvious changes or modifications derived therefrom still fall within the scope of protection of the present invention.

Claims

1. A ground excavation drilling device, Features: The invention comprises a drilling unit and a transport unit arranged above the drilling unit, wherein the drilling unit comprises a drill bit (14) fixedly arranged at the end of a drill rod (13) and a drive motor (10) connected to the drill rod (13), and the transport unit comprises a conveyor belt (1) arranged above the drive motor (10) with waterproof protection and a one-way blade (6) fixedly arranged on the conveyor belt (1), wherein the conveyor belt (1) transports the crushed soil turned up by the drill bit (14) below the double-layer wellbore in the double-layer wellbore to the wellbore opening of the double-layer wellbore and throws out the crushed soil; The drive motor (10) is fixedly mounted on a motor support (11), the motor support (11) is fixedly connected to the bottom of the first wellbore (4), a rotary blade (12) is fixedly mounted on a drill rod (13) below the motor support (11), a fan-type soil turning blade (9) is fixedly mounted on the drive motor (10), the soil turning blade (9) is arranged corresponding to the unidirectional blade (6), and the upward movement frequency of the unidirectional blade (6) is consistent with the soil turning frequency of the soil turning blade (9); The double-layer wellbore comprises a first wellbore (4) and a second wellbore (5) arranged inside the first wellbore (4); a gap (3) is provided between the first wellbore (4) and the second wellbore (5); the conveyor belt (1) moves downward along the gap (3) to below the first wellbore (4) and the second wellbore (5); the one-way blades (6) lift the crushed soil and move upward along the inside of the second wellbore (5) under the action of the conveyor belt (1).

2. A ground excavation drilling device according to claim 1, Features: A first fixing plate (15) and a second fixing plate (17) which are integrally connected to the first shaft (4) and the second shaft (5) are fixedly provided between the first shaft (4) and the second shaft (5); the first fixing plate (15) and the second fixing plate (17) divide the gap (3) into a wire passing area (16) and a downward passing area (7) of the conveyor belt (1).

3. A ground excavation drilling device according to claim 2, Features: The first wellbore (4) and the second wellbore (5) are connected to a wellbore support fixedly arranged on the ground, the wellbore support comprising a support leg (8) and a clamping ring (18) fixedly connected to the support leg (8), and the clamping ring (18) is slidably connected to the outer wall of the first wellbore (4).

4. A ground excavation drilling device according to claim 2, Features: The conveyor belt (1) is driven by a rotating wheel (2) arranged obliquely above the shaft.

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