Combined drilling tool

Abstract

The utility model relates to the technical field of rotary drilling rigs, and discloses a combined drilling tool which comprises a barrel, the bottom end of the barrel is fixedly connected with a connecting end, the connecting end is provided with a hinge unit and a disassembly and assembly unit, the hinge unit is detachably connected with a sand fishing bucket assembly, and the disassembly and assembly unit is detachably connected with a barrel drill assembly. According to the rotary drilling machine, the sand fishing hopper assembly and the barrel drill assembly are detachably connected, and the problem that in the prior art, a rotary drilling machine cannot conduct efficient and low-cost construction hole forming on stratums with different hardness is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drilling rigs, in particular to a combined drilling tool. Background Art

[0002] In engineering construction, rotary drilling rigs are usually used for hole-making operations. Its main structure includes a power part, a drill rod and a drill bit. During the construction process, the power part transmits power to the drill rod, and the drill rod drives the drill bit to rotate, so that the drill bit cuts the rock and soil. The sand scoop is the drilling tool of the rotary drilling rig, and there are many types of it. For example, during the drilling process, the existing sand scoop uses a flat tooth, a pick tooth and other cutting drill bits to break the stratum, and at the same time, the drill cuttings at the bottom of the hole are concentrated inside the cylinder. When the amount of drill cuttings in the cylinder accumulates to a certain extent, the cylinder is lifted up to the ground, and then the pressure rod mechanism on the top of the sand scoop is pushed open by the drilling rig pressure plate. At this time, the scoop door automatically opens, and the drill cuttings in the cylinder automatically fall out of the cylinder. Then, the power is used to drive the scoop door to lock with the cylinder to continue drilling, and the drilling operation is completed by repeating it continuously.

[0003] Although the sand scoop in the prior art can complete the drilling operation, in the actual operation process, if the rock and soil hardness is relatively high, such as the alternating bottom of mudstone and sandstone, the drilling progress of the drill teeth is often slow and the drill teeth are worn out. The drilling tools need to be replaced frequently, and the replacement process is relatively complicated, which not only affects the efficiency of construction, but also increases the cost of construction. Therefore, it is necessary to improve the drilling tools such as the sand scoop in the prior art to ensure that the drilling tools can be easily replaced with different drilling tools, and can be used to drill in different hardness formations efficiently and at low cost. Utility Model Content

[0004] The utility model aims to provide a combined drilling tool to solve the problem that the rotary drilling rig in the prior art cannot perform high-efficiency and low-cost drilling in formations with different hardness.

[0005] In order to solve the above problems, the utility model adopts the following technical solutions: a combined drilling tool, including a cylinder, the bottom end of the cylinder is fixedly connected to a connecting end, the connecting end is provided with a hinge unit and a disassembly unit, the hinge unit is detachably connected to a sand scoop assembly, and the disassembly unit is detachably connected to a cylinder drill assembly.

[0006] The principle and beneficial effect of the present scheme are as follows: in the present application, by fixing a connecting end head at the bottom end of the cylinder body, and by arranging an articulation unit and a disassembly unit on the connecting end head, the sand scoop assembly can be connected by means of the articulation unit, and the barrel drill assembly can be connected by means of the disassembly unit. The sand scoop assembly is used for drilling holes under construction conditions with relatively low hardness such as loose, plastic and fully weathered rock geology, while the barrel drill assembly is used for drilling holes in hard rock formations such as hard rock, granite formation, medium weathered and weakly weathered rock formations; since the articulation unit and the disassembly unit are simultaneously arranged on the connecting end head, in the actual construction process, it is only necessary to install the sand scoop assembly and / or the barrel drill assembly on the corresponding connecting unit according to the actual situation, for example, only the sand scoop assembly is installed in a formation with relatively low hardness, and in a formation with a combination of soft and hard, the sand scoop assembly and the barrel drill assembly are installed at the same time, and when drilling holes in formations with relatively high hardness, only the barrel drill assembly is installed, so that the drilling operation can be completed efficiently, the replacement is convenient, and the wear of the sand scoop assembly is small, which is conducive to reducing costs.

[0007] Preferably, as an improvement, the articulated unit comprises an articulated portion and a locking portion, one side of the sand scoop assembly is rotatably connected to the articulated portion, and the other side is locked or disengaged from the locking portion.

[0008] In this solution, the articulated unit includes a hinged portion and a locking portion. One side of the sand scoop assembly is rotatably connected to the hinged portion, and the other side is locked or disengaged from the locking portion. When the other side is locked with the locking portion, the sand scoop assembly can rotate with the cylinder and the connecting end to achieve drilling. When the side connected to the locking portion is released, the entire sand scoop assembly can rotate relative to the connecting end, so that the drill cuttings in the cylinder automatically fall out. The structure is simple and the connection is convenient.

[0009] Preferably, as an improvement, the disassembly unit comprises a plurality of disassembly parts, and the plurality of disassembly parts are arranged on the connecting end between the hinge part and the locking part, and the number of the barrel drill assemblies is equal to the number of the disassembly parts and corresponds one to one.

[0010] In this solution, the disassembly and assembly unit includes multiple disassembly and assembly parts, the number of drill barrel assemblies is set equal to the number of disassembly and assembly parts, and all the disassembly and assembly parts are located between the hinge part and the locking part. On the one hand, multiple barrel drill assemblies can effectively improve the efficiency and quality of the barrel drill. On the other hand, the barrel drill assembly is located between the hinge part and the locking part, which not only makes the installation of the barrel drill assembly more convenient, but also facilitates the setting of the disassembly and assembly part. When the sand scoop assembly and the barrel drill assembly are installed at the same time, the barrel drill assembly has little interference with the rotation process of the sand scoop assembly, which can ensure that the drill tool can complete the drilling operation efficiently.

[0011] Preferably, as an improvement, the barrel drill assembly includes a connecting head and a barrel drill bit fixedly connected to the connecting head.

[0012] In this solution, the barrel drill assembly is configured in the form of a connecting head and a barrel drill bit that are fixedly connected to each other, so that the connecting head can be conveniently connected to the disassembly and assembly part, making disassembly and assembly more convenient.

[0013] Preferably, as an improvement, the disassembly and assembly portion includes a connecting groove formed on the connecting end head, a locking hole is formed in the connecting groove, and a connecting hole matching the locking hole is formed on the connecting head.

[0014] In this solution, the connection head can be easily and quickly installed by connecting the groove and the connection head. The disassembly and assembly are very convenient and fast, which is conducive to improving construction efficiency.

[0015] Preferably, as an improvement, the connection groove is located on the outer wall of the connection end, and when the connection head is connected to the connection groove, the outer wall of the connection head is flush with the outer wall of the connection end.

[0016] In the present solution, the connecting groove is located on the outer wall of the connecting end, which not only facilitates moving the connecting head to a position matching the connecting groove, but also prevents the connecting head from being located on the inner wall of the connecting end and obstructing the entry or falling out of the cylinder of drill cuttings; in addition, when the connecting head is connected to the connecting groove, the outer wall of the connecting head is flush with the outer wall of the connecting end, preventing the outer wall of the connecting head from protruding outside the connecting end and obstructing the rotation of the cylinder and the connecting end, thereby effectively ensuring the efficiency of drilling.

[0017] Preferably, as an improvement, the outer wall of the connecting end is fixedly connected with a wall guard strip, and the connecting groove is arranged on the wall guard strip.

[0018] In this solution, by fixing a connecting wall strip on the outer wall of the connecting end, the strength of the connecting end is improved, so that the connecting end can transmit power to the sand bucket assembly and / or the barrel drill assembly more stably; in addition, in this solution, the connecting groove is set on the wall strip, which can retain the strength of the connecting end to the greatest extent, so that the entire drilling tool can drill more stably.

[0019] Preferably, as an improvement, there are multiple barrel drill bits, and the multiple barrel drill bits are arranged at the bottom end of the connecting head along multiple directions.

[0020] In this solution, a plurality of barrel drill bits are arranged on each connecting head, and the plurality of barrel drill bits are arranged in different directions, so that the barrel drill assembly has a very good drilling effect.

[0021] Preferably, as an improvement, the inner wall of the connecting end is in a cone shape that is smaller at the top and larger at the bottom.

[0022] In this solution, the inner wall of the connecting end is set to be conical, which makes it difficult to absorb drill and soil during the hole construction process and makes it easy to pour out the drill cuttings from the cylinder and the connecting end.

[0023] Preferably, as an improvement, the sand scoop assembly includes a scoop door and a plurality of picks connected to the scoop door, and the scoop door is connected to a hinge portion and a locking portion.

[0024] In this solution, the sand scoop assembly includes a scoop door and a plurality of picks connected to the scoop door. The scoop door is used to connect with the hinge part and the locking part, and the plurality of picks on the scoop door are used for drilling holes. The structure is simple and the installation is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of Embodiment 1 of the present utility model.

[0026] Figure 2 for Figure 1 Schematic diagram of the drill assembly hidden behind the barrel.

[0027] Figure 3 It is a schematic diagram of the barrel drill assembly in the first embodiment of the utility model.

[0028] Figure 4 This is a schematic diagram of the second embodiment of the present utility model. DETAILED DESCRIPTION

[0029] The following is further described in detail through specific implementation methods:

[0030] The reference numerals in the drawings of the specification include: cylinder 1, connecting end 2, locking groove 201, locking hole 202, connecting groove 203, bucket door 3, protrusion 301, cutting tooth 4, connecting head 5, ball head 501, cylinder drill bit 6, wall protection strip 7.

[0031] Embodiment 1

[0032] This embodiment is as shown in the attached Figure 1 As shown: a combined drilling tool includes a vertically arranged cylinder 1, a connecting end 2 is welded to the bottom end of the cylinder 1, a hinge unit and a disassembly unit are provided on the connecting end 2, a sand scoop assembly is detachably connected to the hinge unit, and a cylinder drill assembly is detachably connected to the disassembly unit.

[0033] Combination Figure 1 and Figure 2The hinge unit includes a hinge part and a locking part. Specifically, the sand scoop assembly includes a bucket door 3 and a plurality of pick teeth 4 fixedly connected to the bucket door 3. In this embodiment, two inlets are opened on the bucket door 3, and the plurality of pick teeth 4 are divided into two rows. The two rows of pick teeth 4 are respectively matched with the two inlets, and each row of pick teeth 4 is arranged along the radial direction of the bucket door 3; at the same time, the hinge part includes a locking groove 201 and a locking hole 202. A protrusion 301 is integrally formed on one side of the bucket door 3, and the protrusion 301 cooperates with the locking groove 201, and a through hole is opened in the protrusion 301, and the through hole cooperates with the locking hole 202. When specifically connected, the protrusion 301 is inserted into the locking groove 201, and then a rotating shaft is passed through the locking hole 202 and the through hole. Nuts are fixed at both ends of the rotating shaft, so that the bucket door 3 and the rotating shaft can rotate relative to the locking hole 202, so that the bucket door 3 can rotate relative to the connecting end 2 to pour out the drill cuttings in the cylinder 1. In addition, the locking portion is similar to the locking structure of a conventional sand scoop in the prior art. When in use, the scoop door 3 and the side on which the protrusion 301 is provided can be rotated until they are automatically locked with the locking portion. When the scoop door 3 needs to be opened, it is only necessary to use external power to push the locking portion to unlock it, and then the drill cuttings in the cylinder 1 will automatically fall out. No further details will be given here.

[0034] Combination Figure 1 , Figure 2 and Figure 3 The disassembly unit includes a plurality of disassembly parts, which are arranged on the connection end 2 between the hinge part and the locking part. The number of drill barrel assemblies is equal to the number of disassembly parts and is arranged one by one. Specifically, the disassembly part includes a connection groove 203 provided on the outer wall of the connection end 2. The barrel drill assembly includes a connection head 5 and a barrel drill bit 6 welded to the connection head 5. The bottom end of the connection head 5 is a spherical ball head 501. There are a plurality of barrel drill bits 6 on each connection head 5. The plurality of barrel drill bits 6 are arranged along the radial direction of the ball head 501, so that all barrel drill bits 6 face different positions to achieve a good rotary drilling effect.

[0035] Combination Figure 1 and Figure 3 As shown, the top of the connector 5 is plate-shaped, and the top of the connector 5 is equal to the width of the connection groove 203, the thickness of the top of the connector 5 is equal to the depth of the connection groove 203, and the connector 5 and the connection groove 203 are both provided with matching through holes, and the connector can be fixedly connected to the connection groove 203 by bolts, and after the connector 5 is fixed in the connection groove 203, the outer wall of the connector 5 is flush with the outer wall of the connection end 2, which can prevent the outer wall of the connector 5 from protruding out of the connection end 2 and affecting the drilling. At the same time, in this embodiment, when the sand scoop assembly and the barrel drill assembly are installed at the same time, the distance that the barrel drill bit 6 on the connector 5 protrudes from the bottom of the connection end 2 is greater than the distance that the pick 4 on the bucket gate 3 protrudes from the bottom of the connection end 2, thereby ensuring that the barrel drill bit 6 can drill first.

[0036] The specific implementation process is as follows:

[0037] In this embodiment, a suitable drilling tool is selected according to the geological conditions during drilling construction. For example, when the geological conditions are completely weathered rocks with relatively low hardness, drilling can be conveniently completed by simply connecting the sand scoop assembly to the connection end 2. When the geological conditions are alternating strata of mudstone and sandstone, the sand scoop assembly and the barrel drill assembly can be simultaneously connected to the connection end 2, and the barrel drill assembly is used to crush the rock strata with relatively high hardness, and then the sand scoop assembly is used to complete the subsequent drilling, thereby providing good protection for the pick 4 in the sand scoop assembly, reducing the loss of the pick 4 and reducing the construction cost.

[0038] In addition, in the present solution, a connecting end 2 is provided, and an articulation unit and a disassembly unit are provided on the connecting end 2 at the same time, so that the sand bucket assembly and the barrel drill assembly can be conveniently and quickly disassembled and assembled. Whether the sand bucket assembly and the barrel drill assembly are temporarily disassembled and assembled during the construction process, or the drilling tool is worn and needs to be replaced, the disassembly and replacement can be completed quickly and conveniently, which effectively improves the efficiency of drilling and has a wide range of applications.

[0039] Embodiment 2

[0040] The difference between the second embodiment and the first embodiment is that: Figure 4 As shown, in this embodiment, a vertically arranged wall guard strip 7 is integrally formed on the outer wall of the connecting end 2, and the number of the wall guard strips 7 is equal to the number of the disassembly and assembly parts, and the connection groove 203 in the disassembly and assembly part is arranged on the wall guard strip 7. In this embodiment, by arranging the wall guard strip 7, the strength of the connecting end 2 is effectively improved, so that the connecting end 2 can more stably transmit power to the sand bucket assembly and the barrel drill assembly, thereby making the drilling process more stable, and the connection groove 203 is arranged on the wall guard strip 7, which can maintain the strength of the connecting end 2 to the greatest extent. In addition, in order to facilitate the pouring out of the barrel 1 and reduce the suction of soil and drilling tools, the connecting end 2 is arranged in this embodiment into a cone shape with a small top and a large bottom, so as to better complete the drilling operation.

[0041] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A combined drilling tool, comprising a barrel, characterized in that: The bottom end of the cylinder is fixedly connected with a connecting end head, and the connecting end head is provided with an articulation unit and a disassembly unit. The articulation unit is detachably connected with a sand scoop assembly, and the disassembly unit is detachably connected with a cylinder drill assembly.

2. A combined drilling tool according to claim 1, characterized in that: The articulated unit comprises an articulated portion and a locking portion. One side of the sand scoop assembly is rotatably connected to the articulated portion, and the other side is locked or disengaged from the locking portion.

3. A combined drilling tool according to claim 2, characterized in that: The disassembly unit comprises a plurality of disassembly parts, which are arranged on the connection end between the hinge part and the locking part. The number of the barrel drill assemblies is equal to the number of the disassembly parts and corresponds one to one.

4. A combined drilling tool according to claim 3, characterized in that: The barrel drill assembly comprises a connecting head and a barrel drill bit fixedly connected to the connecting head.

5. A combined drilling tool according to claim 4, characterized in that: The disassembly and assembly part comprises a connection groove arranged on the connection end head, a lock hole is arranged in the connection groove, and a connection hole matched with the lock hole is arranged on the connection head.

6. A combined drilling tool according to claim 5, characterized in that: The connecting groove is located on the outer wall of the connecting end head. When the connecting head is connected to the connecting groove, the outer wall of the connecting head is flush with the outer wall of the connecting end head.

7. A combined drilling tool according to claim 5, characterized in that: The outer wall of the connecting end is fixedly connected with a wall protection strip, and the connecting groove is arranged on the wall protection strip.

8. A combined drilling tool according to claim 4, characterized in that: The number of the barrel drill bits is multiple, and the multiple barrel drill bits are arranged at the bottom end of the connecting head along multiple directions.

9. A combined drilling tool according to any one of claims 1 to 8, characterized in that: The inner wall of the connecting end is in a cone shape that is smaller at the top and larger at the bottom.

10. A combined drilling tool according to claim 9, characterized in that: The sand scoop assembly comprises a scoop door and a plurality of picks connected to the scoop door, and the scoop door is connected to a hinge part and a locking part.

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