Drilling Assembly for Thin-Walled Tubes

Abstract

This utility model discloses a drilling assembly for thin-walled pipes, belonging to the technical field of drilling equipment. Its key technical features include: a base, a power drive assembly, a propulsion cylinder, and a drill bit. Both the power drive assembly and the propulsion cylinder are mounted on the base. The base has a slidable spindle seat with a telescopic universal joint passing through it. The universal joint can rotate relative to the spindle seat. The sliding of the spindle seat causes the telescopic part of the universal joint to extend or retract. The power drive assembly is connected to the drill bit via the universal joint and is used to drive the universal joint and the drill bit to rotate. The output end of the propulsion cylinder is connected to the spindle seat and is used to drive the spindle seat to slide, thereby causing the telescopic part of the universal joint to extend or retract. This allows the telescopic part of the universal joint to move the drill bit closer to or away from the pipe to be drilled. This drilling assembly effectively reduces the load on the propulsion cylinder, ensuring drilling accuracy and stability.

Description

Technical Field

[0001] This utility model belongs to the field of drilling equipment technology, and specifically relates to a drilling assembly for thin-walled pipes. Background Technology

[0002] Chinese Patent No. CN215237957U discloses a pipe drilling device. It comprises two sliders symmetrically slidably mounted on the inner and outer sides of a rectangular groove. A bidirectional lead screw passes through the sliders and is threadedly connected to them. A clamping motor for driving the bidirectional lead screw is mounted on the inner end face of a fixed base. A clamping plate is vertically fixed to the upper end face of each slider. A clamping groove is formed on the end face of the two clamping plates corresponding to the position of the pipe to be drilled. A mounting base is slidably mounted on a crossbar through a through hole. A transverse lead screw is horizontally rotatably mounted between the vertical part of an L-shaped base and a strip plate. The transverse lead screw passes through the middle of the mounting base and is threadedly connected to it. A forward and reverse motor for driving the transverse lead screw is mounted on the upper side of the left end face of the L-shaped base. The piston rod of a cylinder extends downwards and is fixedly connected to a mounting box at its end. The output shaft of the drilling motor passes downwards through the mounting box and is fixedly connected to a drill bit at its end, which is positioned directly above the pipe to be drilled.

[0003] The above technical solution has the following defects: When drilling, the drilling motor installed at the bottom of the mounting box is started, and the mounting box is moved down by the cylinder, which in turn moves the drill bit down and the drill bit begins to perform drilling operation. Since the cylinder needs to drive the mounting box, the drilling motor and the drill bit to move at the same time, its load is large and its stroke is long. Moreover, it lacks an effective guiding mechanism, which can easily lead to a decrease in drilling accuracy and stability. At the same time, it will also have an adverse effect on the durability of the cylinder itself. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing a drilling assembly for thin-walled tubes. The technical problem to be solved by this utility model is: how to reduce the load on the cylinder while ensuring drilling accuracy and stability.

[0005] The above-mentioned technical objective of this utility model can be achieved through the following technical solution: a drilling assembly for thin-walled pipes, including a base, a power drive assembly, a propulsion cylinder, and a drill bit. The power drive assembly and the propulsion cylinder are both mounted on the base. A spindle seat is slidably mounted on the base, and a telescopic universal joint is mounted on the spindle seat. The telescopic universal joint can rotate relative to the spindle seat. The sliding of the spindle seat can drive the telescopic part of the telescopic universal joint to extend and retract. The power drive assembly is connected to the drill bit through the telescopic universal joint. The power drive assembly is used to drive the telescopic universal joint and the drill bit to rotate. The output end of the propulsion cylinder is connected to the spindle seat. The propulsion cylinder is used to drive the spindle seat to slide, thereby driving the telescopic part of the telescopic universal joint to extend and retract, thereby causing the telescopic part of the telescopic universal joint to move the drill bit closer to or away from the pipe to be drilled.

[0006] In the aforementioned drilling assembly for thin-walled pipes, there are two telescopic universal joints and two drill bits, with each telescopic universal joint corresponding to a drill bit. The power drive assembly can simultaneously drive both telescopic universal joints and both drill bits to rotate. The telescopic parts of both telescopic universal joints are mounted on the spindle seat. The propulsion cylinder drives the spindle seat to slide, which can simultaneously cause the telescopic parts of both telescopic universal joints to extend or retract, thereby causing the telescopic parts of the two telescopic universal joints to respectively drive the corresponding drill bits closer to or further away from the pipe to be drilled.

[0007] In the aforementioned drilling assembly for thin-walled tubes, the power drive component includes a rotary drive source, a drive wheel, a timing belt, and a driven wheel corresponding to the telescopic universal joint. The output end of the rotary drive source is coaxially connected to the drive wheel, the driven wheel is coaxially connected to the end of the telescopic universal joint, and the drive wheel and the driven wheel are connected by the timing belt.

[0008] In the aforementioned drilling assembly for thin-walled tubes, a slide rail is provided on the base, and a slider is slidably connected to the slide rail, the slider being connected to the spindle seat.

[0009] In the aforementioned drilling assembly for thin-walled tubular materials, the drilling assembly further includes a chip guard, which is disposed on the outside of the telescopic universal joint and the spindle seat.

[0010] In the aforementioned drilling assembly for thin-walled tubes, the drilling assembly further includes a protective cover, which covers the outside of the drive pulley, the timing belt, and the driven pulley.

[0011] In the aforementioned drilling assembly for thin-walled tubular materials, the telescopic universal joint has a limiting groove on its telescopic part, the spindle seat is located in the limiting groove, and the two end faces of the spindle seat abut against the two side walls of the limiting groove respectively.

[0012] In summary, the beneficial effects of this utility model compared to the prior art are as follows:

[0013] During drilling, the power drive assembly drives the telescopic universal joint and the drill bit to rotate. Then, the propulsion cylinder drives the spindle seat to slide, thereby causing the telescopic part of the telescopic universal joint to extend or retract. This causes the telescopic part of the telescopic universal joint to move the drill bit closer to or away from the pipe to be drilled. The power drive assembly transmits the rotational power to the drill bit through the telescopic universal joint, causing it to rotate. The propulsion cylinder only needs to drive the spindle seat to slide and cause the telescopic part of the telescopic universal joint to extend or retract, so that the rotating drill bit can move to drill the pipe. This effectively reduces the load on the propulsion cylinder and ensures drilling accuracy and stability. Attached Figure Description

[0014] Figure 1 This is a partial structural schematic diagram of an embodiment;

[0015] Figure 2 This is a partial structural front view of the embodiment;

[0016] Figure 3 This is a partial structural side view of an embodiment;

[0017] Figure 4 This is a partial top view of the structure of the embodiment;

[0018] Figure 5 This is a schematic diagram of the structure of an embodiment.

[0019] Reference numerals: 1. Base; 2. Power drive assembly; 21. Rotary drive source; 22. Drive wheel; 23. Synchronous belt; 24. Driven wheel; 3. Propulsion cylinder; 4. Drill bit; 5. Spindle seat; 6. Telescopic universal joint; 7. Slide rail; 8. Slider; 9. Chip guard; 10. Protective cover; 11. Limiting groove. Detailed Implementation

[0020] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0021] Drilling assemblies for thin-walled tubes, such as Figures 1 to 5 As shown, it includes a base 1, a power drive assembly 2, a propulsion cylinder 3, and a drill bit 4. The power drive assembly 2 and the propulsion cylinder 3 are both mounted on the base 1.

[0022] A spindle seat 5 is slidably mounted on the base 1, and a telescopic universal joint 6 is mounted on the spindle seat 5. Specifically, the telescopic part of the telescopic universal joint 6 is mounted on the spindle seat 5, and the telescopic universal joint 6 can rotate relative to the spindle seat 5. The power drive assembly 2 is connected to the drill bit 4 through the telescopic universal joint 6. The telescopic part of the telescopic universal joint 6 is connected to the drill bit 4, and the power drive assembly 2 is used to drive the telescopic universal joint 6 and the drill bit 4 to rotate.

[0023] In this embodiment, the power drive assembly 2 includes a rotary drive source 21, a drive wheel 22, a timing belt 23, and a driven wheel 24 corresponding to the telescopic universal joint 6. The rotary drive source 21 is preferably a motor. The output end of the rotary drive source 21 is coaxially connected to the drive wheel 22, and the driven wheel 24 is coaxially connected to the end of the telescopic universal joint 6. The drive wheel 22 and the driven wheel 24 are connected by the timing belt 23. The rotary drive source 21 drives the drive wheel 22 to rotate, and the drive wheel 22 drives the driven wheel 24 to rotate through the timing belt 23. The driven wheel 24 drives the telescopic universal joint 6 to rotate, and the drill bit 4 rotates under the drive of the telescopic universal joint 6, thereby transmitting the rotational power to the drill bit 4.

[0024] The sliding of the spindle seat 5 can drive the telescopic part of the telescopic universal joint 6 to extend and retract. Specifically, the telescopic part of the telescopic universal joint 6 has a limiting groove 11. The spindle seat 5 is located in the limiting groove 11, and the two end faces of the spindle seat 5 abut against the two side walls of the limiting groove 11 respectively. That is, the limiting groove 11 limits the spindle seat 5, thereby ensuring the relative stability between the telescopic part of the telescopic universal joint 6 and the spindle seat 5, so that the sliding of the spindle seat 5 can drive the telescopic part of the telescopic universal joint 6 to move and extend.

[0025] The output end of the propulsion cylinder 3 is connected to the spindle seat 5. The propulsion cylinder 3 is used to drive the spindle seat 5 to slide, thereby causing the telescopic part of the telescopic universal joint 6 to extend and retract, which in turn causes the telescopic universal joint 6 to drive the drill bit 4 to approach or move away from the pipe to be drilled. That is, the output end of the propulsion cylinder 3 extends or retracts, thereby driving the spindle seat 5 to slide.

[0026] Furthermore, a slide rail 7 is provided on the base 1, and a slider 8 is slidably connected on the slide rail 7. The slider 8 is connected to the spindle seat 5. The cooperation between the slider 8 and the slide rail 7 realizes the sliding guidance of the spindle seat 5, thereby ensuring the sliding stability of the spindle seat 5, and thus ensuring the extension and retraction of the telescopic universal joint 6 and the stability of the drill bit 4 when moving, effectively ensuring drilling accuracy and stability.

[0027] It should be noted that, compared to the prior art where the cylinder needs to simultaneously drive the drive source that provides rotational power to the drill bit 4, in this embodiment, the propulsion cylinder 3 only needs to drive the spindle seat 5 to slide and drive the telescopic part of the telescopic universal joint 6 to extend and retract, so that the rotating drill bit 4 can move to drill the pipe material, which effectively reduces the load on the propulsion cylinder 3 and ensures drilling accuracy and stability.

[0028] In this embodiment, there are two telescopic universal joints 6 and two drill bits 4, and each telescopic universal joint 6 corresponds to one drill bit 4. The power drive assembly 2 can drive both telescopic universal joints 6 and both drill bits 4 to rotate simultaneously. That is, the number of driven wheels 24 corresponds to the number of telescopic universal joints 6. The telescopic parts of both telescopic universal joints 6 are inserted through the spindle seat 5. The push cylinder 3 drives the spindle seat 5 to slide, which can simultaneously drive the telescopic parts of both telescopic universal joints 6 to extend and retract. This allows the telescopic parts of the two telescopic universal joints 6 to drive the corresponding drill bits 4 to move closer to or away from the pipe to be drilled. That is, drilling at two positions can be performed simultaneously with a single push cylinder 3 and a single rotary drive source 21 (motor), which effectively improves the drilling efficiency.

[0029] It should be noted that the distance between the two drill bits 4 and the distance between the two telescopic universal joints 6 can be adjusted appropriately according to the distance between the corresponding machining holes.

[0030] As an alternative, the number of telescopic universal joints 6 and drill bits 4 can be appropriately increased according to the drilling requirements. That is, the number of telescopic universal joints 6 and drill bits 4 can be increased to three, and the number of driven wheels 24 that drive the telescopic universal joints 6 and drill bits 4 to rotate will also increase accordingly.

[0031] The drilling assembly also includes a chip guard 9, which is mounted on the spindle seat 5. The chip guard 9 covers the outside of the telescopic universal joint 6 and the spindle seat 5 to prevent external debris and impurities from affecting the telescopic universal joint 6's extension and retraction, the telescopic universal joint 6's rotation relative to the spindle seat 5, and the spindle seat 5's sliding, thereby ensuring the stability and reliability of the overall structure.

[0032] The drilling assembly also includes a protective cover 10, which is mounted on the base 1. The protective cover 10 covers the outside of the drive pulley 22, the timing belt 23 and the driven pulley 24 to prevent external debris and impurities from adversely affecting the drive pulley 22, the timing belt 23 and the driven pulley 24, thereby ensuring the stability and reliability of the overall structure.

[0033] The specific embodiments described herein are merely illustrative examples of the spirit of this utility model; those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or adopt similar methods to replace them, but without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A drilling assembly for thin-walled tubes, comprising a base (1), a power drive assembly (2), a propulsion cylinder (3), and a drill bit (4), wherein the power drive assembly (2) and the propulsion cylinder (3) are both mounted on the base (1), characterized in that: A spindle seat (5) is slidably disposed on the base (1). A telescopic universal joint (6) is disposed on the spindle seat (5). The telescopic universal joint (6) can rotate relative to the spindle seat (5). The sliding of the spindle seat (5) can drive the telescopic part of the telescopic universal joint (6) to extend and retract. The power drive assembly (2) is connected to the drill bit (4) through the telescopic universal joint (6). The power drive assembly (2) is used to drive the telescopic universal joint (6) and the drill bit (4) to rotate. The output end of the propulsion cylinder (3) is connected to the spindle seat (5). The propulsion cylinder (3) is used to drive the spindle seat (5) to slide, thereby driving the telescopic part of the telescopic universal joint (6) to extend and retract, thereby causing the telescopic part of the telescopic universal joint (6) to drive the drill bit (4) to approach or move away from the pipe to be drilled.

2. The drilling assembly for thin-walled tubing according to claim 1, characterized in that: The number of telescopic universal joints (6) and drill bits (4) are both two, and the telescopic universal joints (6) and drill bits (4) correspond one-to-one. The power drive assembly (2) can drive the two telescopic universal joints (6) and the two drill bits (4) to rotate simultaneously. The telescopic parts of the two telescopic universal joints (6) are both inserted through the spindle seat (5). The propulsion cylinder (3) drives the spindle seat (5) to slide, which can simultaneously drive the telescopic parts of the two telescopic universal joints (6) to extend and retract, thereby causing the telescopic parts of the two telescopic universal joints (6) to drive the corresponding drill bits (4) to approach or move away from the pipe to be drilled.

3. The drilling assembly for thin-walled tubing according to any one of claims 1 or 2, characterized in that: The power drive assembly (2) includes a rotary drive source (21), a drive wheel (22), a timing belt (23), and a driven wheel (24) corresponding to the telescopic universal joint (6). The output end of the rotary drive source (21) is coaxially connected to the drive wheel (22), and the driven wheel (24) is coaxially connected to the end of the telescopic universal joint (6). The drive wheel (22) and the driven wheel (24) are connected by the timing belt (23).

4. The drilling assembly for thin-walled tubing according to any one of claims 1 or 2, characterized in that: The base (1) is provided with a slide rail (7), and a slider (8) is slidably connected on the slide rail (7). The slider (8) is connected to the main shaft seat (5).

5. The drilling assembly for thin-walled tubing according to any one of claims 1 or 2, characterized in that: The drilling assembly also includes a chip guard (9), which covers the outside of the telescopic universal joint (6) and the spindle seat (5).

6. The drilling assembly for thin-walled tubing according to claim 3, characterized in that: The drilling assembly also includes a protective cover (10) which covers the outside of the drive pulley (22), the timing belt (23) and the driven pulley (24).

7. The drilling assembly for thin-walled tubing according to any one of claims 1 or 2, characterized in that: The telescopic universal joint (6) has a limiting groove (11) on its telescopic part. The spindle seat (5) is located in the limiting groove (11), and the two end faces of the spindle seat (5) abut against the two side walls of the limiting groove (11) respectively.

Images