一种地铁施工用顶板钻孔装置
By introducing a positioning block and a liquid storage chamber into the drilling device for the roof slab of subway construction, the problems of drill bit breakage and insufficient precision were solved, the drill bit was protected and cooled, and the stability and precision of drilling were improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- CHINA RAILWAY NO 5 ENGINEERING GROUP CO LTD
- Filing Date
- 2025-06-24
- Publication Date
- 2026-07-17
AI Technical Summary
The drill bits of existing subway construction roof drilling equipment lack protective measures, are prone to breakage, and have insufficient drilling accuracy and efficiency.
A drilling device is designed, comprising a positioning block, an elastic mechanism, a liquid storage chamber, and a transmission assembly. The positioning block supports and protects the drill bit, the liquid storage chamber cools the drill bit, and the transmission assembly ensures drilling accuracy.
It effectively reduces the probability of drill bit breakage, improves drilling accuracy and efficiency, extends drill bit life, and ensures the stability and precision of the drilling process.
Smart Images
Figure CN224508499U_ABST
Abstract
Claims
1. A drilling device for the roof slab of a subway construction project, comprising a mounting frame (1), a motor (2), a mounting plate (3), a transmission assembly (4), and an electric drill (5), wherein the motor (2) is fixedly mounted on the bottom of the mounting frame (1), the mounting plate (3) is slidably mounted on one end of the mounting frame (1) near the top, the output shaft of the motor (2) is connected to the mounting plate (3) through the transmission assembly (4), the mounting plate (3) slides up and down under the rotation of the motor (2), the electric drill (5) is mounted on the mounting plate (3), and the drill bit of the electric drill (5) extends out of the top of the mounting frame (1), characterized in that, It also includes a positioning block (6) and an elastic mechanism (7). The positioning block (6) has a through hole that matches the drill bit. The drill bit is slidably installed in the through hole. The positioning block (6) is connected to the mounting bracket (1) through the elastic mechanism (7) and abuts against the top plate under the elastic force of the elastic mechanism (7). The elastic force of the elastic mechanism (7) is less than the output force of the motor (2).
2. The roof drilling device for subway construction according to claim 1, characterized in that, The positioning block (6) is provided with a liquid storage chamber for storing coolant. The liquid storage chamber has several small holes that connect to the through hole. The side of the positioning block (6) that contacts the top plate is provided with multiple mounting holes at intervals. An elastic extrusion rod (8) is sealed and slidably installed in the mounting hole. One end of the elastic extrusion rod (8) is inserted into the liquid storage chamber, and the other end protrudes from the surface of the positioning block (6).
3. The roof drilling device for subway construction according to claim 2, characterized in that, The elastic compression rod (8) includes a connecting rod and a compression spring. The bottom end of the connecting rod is connected to the bottom of the liquid storage chamber through the compression spring, and the top end of the connecting rod extends out of the surface of the positioning block (6).
4. The roof drilling device for subway construction according to claim 3, characterized in that, The small hole is equipped with a valve, and the valve opens from the liquid storage cavity to the through hole.
5. The roof drilling device for subway construction according to claim 4, characterized in that, The holes are arranged in order from dense to sparse, with the highest density located near the surface of the positioning block (6).
6. The roof drilling device for subway construction according to any one of claims 1 to 5, characterized in that, The elastic mechanism (7) includes two telescopic rods (71) symmetrically arranged on both sides of the through hole and two connecting springs (72). The two ends of the telescopic rods (71) are fixedly connected to the mounting frame (1) and the positioning block (6) respectively. The connecting springs (72) are sleeved on the telescopic rods (71), and the two ends of the connecting springs (72) abut against the mounting frame (1) and the positioning block (6) respectively.
7. The roof drilling device for subway construction according to claim 6, characterized in that, The transmission assembly (4) includes a screw (41), a slider (42), and a stop plate (43). The stop plate (43) is fixedly installed on the mounting bracket (1). One end of the screw (41) is fixedly connected to the output shaft of the motor (2), and the other end is rotatably connected to the stop plate (43). The slider (42) has a threaded through hole that matches the screw (41). The slider (42) is threadedly connected to the screw (41), and the slider (42) is fixedly connected to the mounting plate (3).
8. The roof drilling device for subway construction according to claim 7, characterized in that, The screw (41) is provided with scale lines.
9. The roof drilling device for subway construction according to claim 8, characterized in that, The screw (41) is provided with a stop nut (9), which is threadedly connected to the screw (41). The stop nut (9) is installed above the slider (42). When the slider (42) contacts the stop nut (9), the slider (42) is fixed relative to the mounting bracket (1).