Anti-falling rotary percussion screw drill

Abstract

The utility model relates to the technical field of rotary percussion screw drilling tools, in particular to an anti-falling rotary percussion screw drilling tool which comprises a drilling rod, a power connecting shaft is placed at the top end of the drilling rod, a connecting device is arranged on the upper surface of the drilling rod and comprises a connecting frame, the connecting frame is fixedly connected with the upper surface of the drilling rod, and a limiting groove is formed in the top end of the connecting frame. A limiting groove is formed in the power connecting shaft, a movable block is placed in the limiting groove and placed on the upper surface of the connecting frame, a clamping groove is formed in the inner wall of the limiting groove, a threaded block is connected into the connecting frame in an inserted mode, the threaded block is in threaded connection with the interior of the clamping groove, and a limiting assembly is arranged on the outer surface of the power connecting shaft. According to the utility model, the connecting device is arranged, so that the drill rod can be effectively prevented from falling into the ground, and a worker does not need to spend a lot of time to take the rotary percussion screw drill out of the ground, thereby improving the progress of a project.

Description

Technical Field

[0001] This utility model relates to the field of rotary screw drills, and in particular to a rotary screw drill that prevents the screw from falling off. Background Technology

[0002] The rotary impact screw drill is a new type of drill tool that combines rotary impact technology with the characteristics of screw drills. It is mainly used in hard rock geothermal drilling. By increasing the impact force at the drill bit, the rotary impact screw drill improves the rock-breaking efficiency of the drill bit, thereby significantly increasing the drilling speed. The rotary impact screw drill is mainly used in hard rock geothermal drilling, especially in hard rock formations such as granite and gneiss. In these formations, the rock has high compressive strength, and traditional screw or turbine drills are difficult to break the rock effectively. The rotary impact screw drill significantly improves the mechanical drilling speed by increasing the impact force, reducing drilling time and costs.

[0003] When workers need to drill, they install the rotary screw drill on the power connecting shaft so that the rotary screw drill can drill into the ground. However, existing rotary screw drills may experience the connecting rod breaking during use, causing the rotary screw drill to lose its restraint and fall to the ground due to gravity. This results in workers having to spend a lot of time to retrieve the rotary screw drill from the ground, thus affecting the progress of the project. Utility Model Content

[0004] The purpose of this utility model is to solve the problem in the existing technology that workers need to spend a lot of time to remove the rotary screw drill from the ground, which affects the progress of the project. Therefore, this utility model proposes a rotary screw drill that prevents the rotary screw drill from falling off.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a drill bit for preventing slippage of a rotary drill bit, comprising a drill rod, a power connecting shaft placed at the top of the drill rod, a connecting device provided on the upper surface of the drill rod, the connecting device comprising a connecting frame, the connecting frame being fixedly connected to the upper surface of the drill rod, a limiting groove being formed at the top of the connecting frame, a movable block being placed inside the limiting groove, the movable block being placed on the upper surface of the connecting frame, a slot being formed on the inner wall of the limiting groove, a threaded block being inserted and connected inside the connecting frame, the threaded block being threadedly connected to the inside of the slot, a limiting component being provided on the outer surface of the power connecting shaft, the limiting component comprising a placement groove, the placement groove being formed on the outer surface of the power connecting shaft, the connecting frame and the movable block being placed inside the placement groove, the limiting block being fixedly connected to the inner wall of the placement groove, the connecting frame being placed on both sides of the limiting block, the placement groove being able to cooperate with the limiting block and the connecting frame to achieve the purpose of limiting the sliding of the movable block.

[0006] Preferably, the upper surface of the drill rod is provided with a replacement device, the replacement device including a slot, the slot being formed on the upper surface of the drill rod, and a retaining plate being fixedly connected inside the slot, the slot being able to cooperate with the drill rod to achieve the purpose of storing the connecting rod.

[0007] Preferably, the power connection shaft has an internal threaded connection to a connecting rod, and the slot is fitted onto the bottom end of the connecting rod. The connecting rod can cooperate with the power connection shaft and the drill rod to achieve the purpose of connecting the connecting rod and the drill rod.

[0008] Preferably, the lower surface of the connecting rod is provided with a sleeve groove, and the retaining plate is inserted into the inside of the sleeve groove. The sleeve groove can cooperate with the connecting rod to achieve the purpose of restricting the rotation of the connecting rod.

[0009] Preferably, the outer surface of the drill rod is provided with a threaded hole, and a crossbar is threadedly connected inside the threaded hole. The crossbar is inserted into the inside of the connecting rod, and the threaded hole can cooperate with the drill rod to achieve the purpose of adjusting the crossbar.

[0010] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0011] 1. In this utility model, by setting a connecting device, when the rotary screw drill is used, the worker installs the top end of the connecting rod inside the power connecting shaft, and the worker installs the drill rod on the bottom end of the connecting rod. The drill rod pushes the connecting frame, and the connecting frame is inserted into the placement groove. The worker places the movable block in the slot, and the worker puts the threaded block into the movable block and rotates it. The threaded block is connected to the internal thread of the slot. When the connecting rod breaks, the drill rod will slide downwards due to gravity. The drill rod drives the connecting frame, and the connecting frame drives the movable block. The movable block is guided by the placement groove. When the movable block slides to the designated position, the movable block abuts against the limit block, and the drill rod remains connected to the power connecting shaft. The worker controls the equipment to remove the drill rod from the ground. By setting the connecting device, the drill rod can be effectively prevented from falling into the ground, avoiding the need for the worker to spend a lot of time removing the rotary screw drill from the ground, thereby improving the progress of the project.

[0012] 2. In this utility model, by setting a replacement device, when the worker needs to replace the broken connecting rod, the worker rotates the crossbar, the crossbar is guided by the threaded hole and disengages, the crossbar disengages from the connecting rod, the worker takes the connecting rod out of the slot, and the connecting rod disengages from the clamping plate. By setting a replacement device, the worker can effectively and conveniently replace the broken connecting rod, avoiding the time-consuming situation when the worker disassembles the broken connecting rod, thereby improving the worker's work efficiency. Attached Figure Description

[0013] Figure 1A three-dimensional structural diagram of an anti-drop-rotating screw drill bit is provided for this utility model;

[0014] Figure 2 This utility model provides a schematic diagram of the connection device structure for an anti-drop-rotating screw drill bit;

[0015] Figure 3 This utility model proposes an anti-drop-rotating screw drill bit. Figure 2 Enlarged structural diagram at point A in the middle;

[0016] Figure 4 This utility model provides a schematic diagram of a replacement device for an anti-drop-rotating screw drill bit;

[0017] Figure 5 This utility model proposes an anti-drop-rotating screw drill bit. Figure 4 Enlarged structural diagram at point B.

[0018] Legend:

[0019] 1. Drill rod; 2. Power connection shaft; 3. Connecting device; 31. Placement slot; 32. Limiting block; 33. Movable block; 34. Threaded block; 35. Limiting groove; 36. Connecting frame; 37. Slot; 4. Changing device; 41. Card plate; 42. Slot; 43. Sleeve groove; 44. Connecting rod; 45. Crossbar; 46. Threaded hole. Detailed Implementation

[0020] Please see Figures 1-5 This utility model provides a technical solution: an anti-drop-rotating screw drill, including a drill rod 1, a power connection shaft 2 placed at the top of the drill rod 1, and a connecting device 3 provided on the upper surface of the drill rod 1.

[0021] The specific setup and function of the connecting device 3 and the replacement device 4 will be described in detail below.

[0022] In this embodiment: the connecting device 3 includes a connecting frame 36, which is fixedly connected to the upper surface of the drill rod 1. A limiting groove 35 is opened at the top of the connecting frame 36. A movable block 33 is placed inside the limiting groove 35 and is placed on the upper surface of the connecting frame 36. A slot 37 is opened on the inner wall of the limiting groove 35. A threaded block 34 is inserted and connected inside the connecting frame 36. The threaded block 34 is threadedly connected to the slot 37. A limiting component is provided on the outer surface of the power connecting shaft 2.

[0023] Specifically, the limiting component includes a placement groove 31, which is formed on the outer surface of the power connecting shaft 2. The connecting frame 36 and the movable block 33 are both placed inside the placement groove 31. The inner wall of the placement groove 31 is fixedly connected to the limiting block 32. The connecting frame 36 is placed on both sides of the limiting block 32. The placement groove 31 can cooperate with the limiting block 32 and the connecting frame 36 to achieve the purpose of limiting the sliding of the movable block 33.

[0024] Specifically, a replacement device 4 is provided on the upper surface of the drill rod 1. The replacement device 4 includes a slot 42, which is opened on the upper surface of the drill rod 1. A card plate 41 is fixedly connected inside the slot 42.

[0025] In this embodiment, the slot 42 can cooperate with the drill rod 1 to accommodate the connecting rod 44.

[0026] In this embodiment: the internal thread of the power connecting shaft 2 is connected to a connecting rod 44, and the slot 42 is sleeved on the bottom end of the connecting rod 44. The connecting rod 44 can cooperate with the power connecting shaft 2 and the drill rod 1 to achieve the purpose of connecting the connecting rod 44 and the drill rod 1.

[0027] Specifically, a groove 43 is provided on the lower surface of the connecting rod 44, and the retaining plate 41 is inserted into the groove 43.

[0028] In this embodiment, the sleeve groove 43 can cooperate with the connecting rod 44 to restrict the rotation of the connecting rod 44.

[0029] Specifically, the outer surface of the drill rod 1 is provided with a threaded hole 46, and a crossbar 45 is threadedly connected inside the threaded hole 46. The crossbar 45 is inserted into the connecting rod 44.

[0030] In this embodiment, the threaded hole 46 can be engaged with the drill rod 1 to achieve the purpose of adjusting the crossbar 45.

[0031] Working principle: By setting the connecting device 3, when the rotary screw drill is used, the operator installs the top end of the connecting rod 44 inside the power connecting shaft 2, and the operator installs the drill rod 1 on the bottom end of the connecting rod 44. The drill rod 1 pushes the connecting frame 36, which inserts into the placement groove 31. The operator places the movable block 33 in the slot 37, and the operator puts the threaded block 34 into the movable block 33 and rotates it. The threaded block 34 is threadedly connected to the inside of the slot 37. When the connecting rod 44 breaks, the drill rod 1 will slide downwards due to gravity. The drill rod 1 drives the connecting frame 36, which in turn drives the movable block 33. The movable block 33 is guided by the placement groove 31. When the movable block 33 slides to the designated position, it abuts against the limit block 32, and the drill rod 1 remains stationary with the power connecting shaft 2. The connection device 3 effectively prevents the drill rod 1 from falling into the ground, avoiding the need for workers to spend a lot of time removing the rotary drill bit from the ground and thus improving the progress of the project. In addition, the replacement device 4 allows workers to replace the broken connecting rod 44 by rotating the crossbar 45. The crossbar 45 is guided by the threaded hole 46 and disengages from the connecting rod 44. The worker can then remove the connecting rod 44 from the slot 42 and disengage it from the clamping plate 41. The replacement device 4 facilitates the replacement of the broken connecting rod 44, avoiding the time-consuming process of disassembling the broken connecting rod 44 and thus improving the worker's work efficiency.

Claims

1. An anti-whirl, screwing-in, drill stem, comprising a drill stem (1), a power connection shaft (2) is placed at the top end of the drill stem (1), characterized in that: The upper surface of the drill rod (1) is provided with a connecting device (3), the connecting device (3) comprises a connecting frame (36), the connecting frame (36) is fixedly connected with the upper surface of the drill rod (1), the top end of the connecting frame (36) is provided with a limiting groove (35), the limiting groove (35) is placed with a movable block (33), the movable block (33) is placed on the upper surface of the connecting frame (36), the inner wall of the limiting groove (35) is provided with a clamping groove (37), the inside of the connecting frame (36) is inserted with a threaded block (34), the threaded block (34) is screw connected with the inside of the clamping groove (37), and the outer surface of the power connecting shaft (2) is provided with a limiting assembly.

2. The anti-whirl, thread-the-dragger-screw drill string of claim 1, wherein: The limiting assembly comprises a placing groove (31), the placing groove (31) is arranged on the outer surface of the power connecting shaft (2), the connecting frame (36) and the movable block (33) are placed on the inside of the placing groove (31), the inner wall of the placing groove (31) is fixedly connected with a limiting block (32), and the connecting frame (36) is placed on both sides of the limiting block (32).

3. The anti-whirl, thread-rolling, screw-drill of claim 1 wherein: The upper surface of the drill rod (1) is provided with a replacement device (4), the replacement device (4) comprises a slot (42), the slot (42) is arranged on the upper surface of the drill rod (1), and the inside of the slot (42) is fixedly connected with a clamping plate (41).

4. The anti-whirl, thread-the-dragger-screw drill string of claim 3, wherein: The inside of the power connecting shaft (2) is screw connected with a connecting rod (44), and the slot (42) is sleeved on the bottom end of the connecting rod (44).

5. The anti-whirl, thread-the-drag bit of claim 4, wherein: The lower surface of the connecting rod (44) is provided with a sleeve groove (43), and the clamping plate (41) is inserted into the inside of the sleeve groove (43).

6. The anti-whirl, thread-the-dragger-screw drill string of claim 3, wherein: The outer surface of the drill rod (1) is provided with a threaded hole (46), the inside of the threaded hole (46) is screw connected with a cross rod (45), and the cross rod (45) is inserted into the inside of the connecting rod (44).

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