Core drilling machine capable of controlling drilling speed and guaranteeing coaxiality
By setting up a lifting structure, linear bearing and motor reducer integrated machine on the drilling core machine, the uniform speed drop and rotation of the core drilling drill bit is achieved, solving the problems of uneven drilling speed and drill bit shaking of the existing drilling core machine, and improving the accuracy of the core coaxiality and the accuracy of laboratory test results.
Patent Information
- Application Number
- CN202421842998.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-01
AI Technical Summary
During the core extraction process, existing core drilling machines manually control uneven drilling speed, resulting in corrugation on the side of the core sample and deviation of coaxiality, affecting the accuracy of laboratory analysis and detection results.
A core drilling machine with controllable drilling speed is designed. By setting up a lifting structure, linear bearing and motor reducer integrated machine on the core drilling machine, the core drilling drill bit will be able to reduce the shaking of the drilling bit, and ensure the controllability of the drilling speed.
By controlling the drilling speed and reducing drill bit shaking, the accuracy of the core-like coaxiality of drilled cores is improved, the core-like damage is reduced, and the accuracy of laboratory analysis and detection results is improved.
Smart Images
Figure CN222926438U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of core drilling sampling, in particular to a core drilling machine that can control the drilling speed to ensure coaxiality. Background Art
[0002] A core drilling rig is a machine used to extract samples of materials such as concrete and rock. By rotating the core drilling bit, the material is extracted as a sample for laboratory analysis and testing.
[0003] The existing core drilling machines on the market need to manually control the drilling speed during core sampling. If the drilling speed is slow, it will stay at the corresponding place for a long time. If the drilling speed is too fast, it will increase the damage to the core sample. Since the manually controlled drilling speed is uneven, the side of the drilled core sample will appear corrugated, which will affect the accuracy of laboratory analysis and test results. Moreover, the core drilling bit needs a certain length during core sampling. Due to the too long cantilever of the drill bit, the drill bit of the existing core drilling machines on the market will shake during drilling, resulting in the eccentricity of the drill bit and too large deviation of the coaxiality of the drilled core sample, affecting the accuracy of laboratory analysis and test results.
[0004] Based on this, a core drilling machine that can control the drilling speed to ensure coaxiality is now provided, which can eliminate the drawbacks of the existing devices. Content of the Utility Model
[0005] The purpose of the utility model is to provide a core drilling machine that can control the drilling speed to ensure coaxiality, so as to solve the problems in the background art.
[0006] To achieve the above purpose, the utility model provides the following technical solutions:
[0007] A core drilling machine that can control the drilling speed to ensure coaxiality includes a core drilling machine support base. The upper surface of the core drilling machine support base is connected to the upper fixed frame of the core drilling machine. There is a lifting structure between the upper fixed frame of the core drilling machine and the core drilling machine support base. The upper fixed frame of the core drilling machine is connected to the core drilling machine feed disk through the lifting structure. The upper surface of the core drilling machine feed disk is provided with a core drilling main machine. The power output shaft of the core drilling main machine penetrates through the core drilling machine feed disk and is connected to the core sampling bit. The lower surface of the core drilling machine feed disk is connected with a bearing fixing frame. A linear bearing is arranged at the lower end of the bearing fixing frame. The linear bearing is coaxial with the power output shaft of the core drilling main machine. The core sampling bit penetrates through the middle of the linear bearing. A limiting module for preventing the core drilling machine feed disk from exceeding the working range is arranged on the core drilling machine support base and the upper fixed frame of the core drilling machine. A water injection component for cooling the core sampling bit is arranged at the left end of the upper fixed frame of the core drilling machine. A mobile auxiliary unit for facilitating the transfer of the equipment is arranged at the bottom of the core drilling machine support base.
[0008] On the basis of the above technical solutions, the utility model also provides the following optional technical solutions:
[0009] In an alternative solution: The lifting structure includes a lead screw and three sliding rods between the support base of the core drill and the upper fixing frame of the core drill. The lower end of the lead screw is rotatably connected to the support base of the core drill. The upper end of the lead screw passes through the upper fixing frame of the core drill and is connected to the lifting drive mechanism. The upper end of the sliding rod is rotatably connected to the upper fixing frame of the core drill, and the lower end of the sliding rod is rotatably connected to the support base of the core drill. The lead screw is threadedly connected to the feed disk of the core drill, and the sliding rod is slidably connected to the feed disk of the core drill.
[0010] In an alternative solution: The lifting drive mechanism includes a motor mounting bracket provided on the upper surface of the upper fixing frame of the core drill. The upper end of the motor mounting bracket is connected to the motor reducer integrated machine, and the power output end of the motor reducer integrated machine is connected to the upper end of the lead screw.
[0011] In an alternative solution: The limit module includes an upper limit switch provided on the upper surface of the upper fixing frame of the core drill and a lower limit switch provided on the upper surface of the support base of the core drill.
[0012] In an alternative solution: The water injection assembly includes a water tank provided on the left side of the upper fixing frame of the core drill. The bottom of the water tank is communicated with a water outlet pipe, and a flow controller is provided on the water outlet pipe. The top of the water tank is provided with a water filling port for filling water into the water tank.
[0013] In an alternative solution: The flow controller includes a water outlet valve provided at the water inlet end of the water outlet pipe.
[0014] In an alternative solution: The mobile auxiliary unit includes two auxiliary rollers provided on the right side surface of the bottom of the support base of the core drill, and the auxiliary rollers are rotatably connected to the support base of the core drill.
[0015] In an alternative solution: A plastic transparent plate is provided on the periphery of the support base of the core drill.
[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0017] The present utility model realizes controllable drilling speed by connecting the power output end of the motor reducer integrated machine to the upper end of the lead screw. By providing a linear bearing at the lower end of the feed disk of the core drill, the vibration of the core drill bit itself during drilling the material sample is reduced, and damage to the material sample is avoided. Description of the Drawings
[0018] Figure 1 It is a schematic diagram of the upper structure at the front right end of the present utility model.
[0019] Figure 2 It is a schematic diagram of the lower structure at the front left end of the present utility model.
[0020] Figure 3For the present utility model Figure 2 Partial enlarged view of A in the present utility model.
[0021] Figure 4 Schematic structural diagram of the upper rear end on the right side of the present utility model.
[0022] Figure 5 For the present utility model Figure 4 Partial enlarged view of B in the present utility model.
[0023] Annotation of reference numerals in the drawings: 101, support base of the core drilling machine; 102, upper fixing frame of the core drilling machine; 103, core sampling bit; 201, integrated motor and reducer; 202, motor mounting bracket; 301, lead screw; 302, slide bar; 303, feed disk of the core drilling machine; 304, core drilling main body; 401, linear bearing; 402, bearing fixing bracket; 501, upper limit switch; 502, lower limit switch; 601, water tank; 602, water outlet pipe; 603, water outlet valve; 604, water filling port; 701, auxiliary roller. Specific embodiments
[0024] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.
[0025] In one embodiment, as Figures 1 - 5 shown, a core drilling machine with a controllable drilling speed to ensure coaxiality includes a support base 101 of the core drilling machine, and the upper surface of the support base 101 of the core drilling machine is connected to an upper fixing frame 102 of the core drilling machine.
[0026] In this embodiment, there is a lifting structure between the upper fixing frame 102 of the core drill and the support base 101 of the core drill. The upper fixing frame 102 of the core drill is connected to the feed disk 303 of the core drill through the lifting structure. The upper surface of the feed disk 303 of the core drill is provided with a core drill main body 304. The power output shaft of the core drill main body 304 penetrates through the feed disk 303 of the core drill and is connected to the core bit 103. The lower surface of the feed disk 303 of the core drill is connected with a bearing fixing frame 402. A linear bearing 401 is provided at the lower end of the bearing fixing frame 402. The linear bearing 401 is coaxial with the power output shaft of the core drill main body 304. The core bit 103 penetrates through the middle of the linear bearing 401. A limit module for preventing the feed disk 303 of the core drill from exceeding the working range is provided on the support base 101 and the upper fixing frame 102 of the core drill. A water injection component for cooling the core bit 103 is provided at the left end of the upper fixing frame 102 of the core drill. A mobile auxiliary unit for facilitating the transfer of the equipment is provided at the bottom of the support base 101 of the core drill. The lifting structure enables the core bit 103 to move at a constant speed. The core drill main body 304 drives the core bit 103 to rotate. The linear bearing 401 reduces the vibration of the core bit 103 during drilling. The limit module prevents the lifting structure from moving the feed disk 303 of the core drill out of the working range and causing damage to the core drill. The water injection component reduces the temperature of the core bit 103 during operation, improves its durability, and reduces the dust during drilling.
[0027] In one embodiment, as Figure 1 and Figure 5 shown, the lifting structure includes a lead screw 301 and three slide bars 302 between the support base 101 of the core drill and the upper fixing frame 102 of the core drill. The lower end of the lead screw 301 is rotatably connected to the support base 101 of the core drill. The upper end of the lead screw 301 penetrates through the upper fixing frame 102 of the core drill and is connected to the lifting drive mechanism. The upper end of the slide bar 302 is rotatably connected to the upper fixing frame 102 of the core drill. The lower end of the slide bar 302 is rotatably connected to the support base 101 of the core drill. The lead screw 301 is threadedly connected to the feed disk 303 of the core drill. The slide bar 302 is slidably connected to the feed disk 303 of the core drill. When the lead screw 301 rotates forward or backward, it will drive the feed disk 303 of the core drill to rise or fall. When the feed disk 303 of the core drill rises or falls, it slides on the slide bar 302 and is guided by the slide bar 302.
[0028] In one embodiment, as Figure 1 and Figure 5 shown, the lifting drive mechanism includes a motor mounting frame 202 provided on the upper surface of the upper fixing frame 102 of the core drill. The upper end of the motor mounting frame 202 is connected to the motor reducer integrated machine 201. The power output end of the motor reducer integrated machine 201 is connected to the upper end of the lead screw 301. The motor reducer integrated machine 201 drives the lead screw 301.
[0029] In one embodiment, as Figure 4 and Figure 5 shown, the limit module includes an upper limit switch 501 disposed on the upper surface of the fixed frame 102 of the core drill and a lower limit switch 502 disposed on the upper surface of the support base 101 of the core drill.
[0030] In one embodiment, as Figure 1 and Figure 3 shown, the water injection assembly includes a water tank 601 disposed on the left side of the fixed frame 102 of the core drill. A water outlet pipe 602 communicates with the bottom of the water tank 601. A flow controller is provided on the water outlet pipe 602. A water filling port 604 for filling water into the water tank 601 is provided on the top of the water tank 601.
[0031] In one embodiment, as Figure 3 shown, the flow controller includes a water outlet valve 603 disposed at the water inlet end of the water outlet pipe 602.
[0032] In one embodiment, as Figure 1 shown, the mobile assistance unit includes two auxiliary rollers 701 disposed on the right side surface of the bottom of the support base 101 of the core drill. The auxiliary rollers 701 are rotatably connected to the support base 101 of the core drill.
[0033] In one embodiment, as Figure 1 shown, a plastic transparent plate is provided on the periphery of the support base 101 of the core drill, which can prevent muddy water from splashing and monitor the core drilling progress in real time.
[0034] The above embodiments disclose a core drill with a controllable drilling speed to ensure coaxiality. When taking a core by drilling, first tilt the core drill to the right. The auxiliary roller 701 at the bottom of the core drill touches the ground, and the upper part of the core drill can be easily moved by pushing it. After the core drill is moved to the target position, the core drill is erected and the upper part of the core drill bit 103 is connected to the power output shaft of the core drill main machine 304 through the linear bearing 401. Then, the motor-reducer integrated machine 201 rotates forward to drive the lead screw 301 to rotate. The lead screw 301 drives the core drill feed plate 303 threadedly connected to the lead screw 301 to descend, so as to realize the uniform descent of the core drill bit 103. The core drill main machine 304 on the core drill feed plate 303 drives the core drill bit 103 to rotate. At the same time, the linear bearing 401 can reduce the vibration of the core drill bit 103 when drilling the material sample and prevent damage to the sample. When drilling the material sample, open the water outlet valve 603, and the water in the water tank 601 flows to the core drill bit 103 through the water outlet pipe 602 to prevent the core drill bit 103 from overheating. When the core drill feed plate 303 moves down and approaches the upper end face of the core drill support base 101, the lower limit switch 502 acts to prevent the motor-reducer integrated machine 201 from continuing to rotate forward. At this time, reverse the motor-reducer integrated machine 201, which can drive the core drill feed plate 303 to move up, and the lower limit switch 502 resets. When the core drill feed plate 303 moves up and approaches the upper end of the upper fixing frame 102 of the core drill, the upper limit switch 501 acts to prevent the motor-reducer integrated machine 201 from continuing to rotate in reverse. At this time, rotating the motor-reducer integrated machine 201 forward can drive the core drill feed plate 303 to move down.
[0035] As described above, the above are only the specific embodiments of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present application can easily think of changes or substitutions, which should all be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.
Claims
1. A core drilling machine with controllable drilling speed to ensure coaxiality, comprising a core drilling machine support base (101), wherein the upper surface of the core drilling machine support base (101) is connected to a core drilling machine upper fixing frame (102); It is characterized in that A lifting structure is provided between the core drilling machine upper fixing frame (102) and the core drilling machine supporting base (101); the core drilling machine upper fixing frame (102) is connected to the core drilling machine cutter disc (303) via the lifting structure; a core drilling main machine (304) is provided on the upper surface of the core drilling machine cutter disc (303); a power output shaft of the core drilling main machine (304) penetrates the core drilling machine cutter disc (303) and is connected to the coring drill bit (103); a bearing fixing frame (402) is connected to the lower surface of the core drilling machine cutter disc (303); a linear bearing fixing frame (402) is provided at the lower end of the bearing fixing frame (402) The core drilling machine (304) is provided with a bearing (401), the linear bearing (401) is coaxial with a power output shaft of the core drilling machine (304), the core drilling bit (103) passes through the middle of the linear bearing (401), the core drilling machine support base (101) and the core drilling machine upper fixed frame (102) are provided with a limit module for preventing the core drilling machine feed disc (303) from exceeding the working range, the left end of the core drilling machine upper fixed frame (102) is provided with a water injection component for cooling the core drilling bit (103), and the bottom of the core drilling machine support base (101) is provided with a mobile auxiliary unit for facilitating the transfer of equipment.
2. A core drilling machine with controllable drilling speed and coaxiality according to claim 1, characterized in that: The lifting structure comprises a screw rod (301) and three slide rods (302) between a core drilling machine support base (101) and an upper fixing frame (102) of the core drilling machine; the lower end of the screw rod (301) is rotatably connected to the core drilling machine support base (101); the upper end of the screw rod (301) passes through the upper fixing frame (102) of the core drilling machine and is connected to the lifting drive mechanism; the upper end of the slide rod (302) is rotatably connected to the upper fixing frame (102) of the core drilling machine; the lower end of the slide rod (302) is rotatably connected to the core drilling machine support base (101); the screw rod (301) is threadedly connected to a core drilling machine cutter feed disc (303); and the slide rod (302) is slidably connected to the core drilling machine cutter feed disc (303).
3. A core drilling machine with controllable drilling speed and coaxiality according to claim 2, characterized in that: The lifting drive mechanism comprises a motor mounting frame (202) arranged on the upper surface of a core drilling machine upper fixing frame (102), the upper end of the motor mounting frame (202) being connected to a motor reducer integrated machine (201), and the power output end of the motor reducer integrated machine (201) being connected to the upper end of a screw rod (301).
4. A core drilling machine with controllable drilling speed and coaxiality according to claim 1, characterized in that: The limit module comprises an upper limit switch (501) arranged on the upper surface of the core drilling machine upper fixing frame (102) and a lower limit switch (502) arranged on the upper surface of the core drilling machine supporting base (101).
5. A core drilling machine with controllable drilling speed and coaxiality according to claim 1, characterized in that: The water injection assembly comprises a water tank (601) arranged on the left side of the core drilling machine upper fixing frame (102); the bottom of the water tank (601) is connected to a water outlet pipe (602); a flow controller is provided on the water outlet pipe (602); and a water inlet (604) for adding water to the water tank (601) is provided on the top of the water tank (601).
6. A core drilling machine with controllable drilling speed and coaxiality according to claim 5, characterized in that: The flow controller comprises a water outlet valve (603) arranged at the water inlet end of the water outlet pipe (602).
7. A core drilling machine with controllable drilling speed and coaxiality according to claim 1, characterized in that: The mobile auxiliary unit comprises two auxiliary rollers (701) arranged on the right side of the bottom of the core drilling machine support base (101), and the auxiliary rollers (701) are rotatably connected to the core drilling machine support base (101).
8. The core drilling machine with controllable drilling speed and coaxiality according to claim 1, characterized in that: A plastic transparent plate is provided on the periphery of the core drilling machine support base (101).