A drilling and coring device for tunnel construction

Abstract

This invention relates to the field of tunnel construction and provides a core drilling device for tunnel construction, including a movable frame and a support base disposed inside the movable frame. A limiting mechanism is provided between the support base and the movable frame, and the limiting mechanism elastically abuts against the movable frame. The movable frame is connected to a driving mechanism, which can drive the support base to move vertically along the movable frame. A drilling mechanism is connected to the support base, and the drilling mechanism can move synchronously with the support base. Under the transmission action of the driving mechanism, the drilling mechanism can continuously rotate. A support mechanism is provided between the drilling mechanism and the support base, and the support mechanism can elastically support the drilling mechanism.

Description

Technical Field

[0001] This invention belongs to the field of tunnel construction, and particularly relates to a core drilling device for tunnel construction. Background Technology

[0002] Road engineering refers to the entire process of planning, designing, constructing, maintaining and managing roads, as well as the engineering entities involved. Like any other type of civil engineering, road engineering has distinct technical, economic and management characteristics. During the construction of road projects, it is often necessary to test the ground soil, which is usually done by using a core drilling machine.

[0003] Existing core drilling devices for tunnel construction drill and extract cores from the ground by continuously rotating the drill bit in a spiral motion. However, when the soil is hard, the drilling force of the drill bit is weak and the drill bit is prone to rigid failure.

[0004] To avoid the aforementioned technical problems, it is indeed necessary to provide a core drilling device for tunnel construction to overcome the deficiencies in the prior art. Summary of the Invention

[0005] The purpose of this invention is to provide a core drilling device for tunnel construction, which aims to solve the problems of weak drilling force and easy rigid failure of existing core drilling devices for tunnel construction when the soil is hard.

[0006] This invention is implemented as follows: a core drilling device for tunnel construction, comprising a movable frame, and further comprising:

[0007] A support base is provided inside the movable frame, and a limiting mechanism is provided between the support base and the movable frame, wherein the limiting mechanism elastically abuts against the movable frame.

[0008] The movable frame is connected to a drive mechanism, which can drive the support base to move vertically along the movable frame;

[0009] The support base is connected to a drilling mechanism, which can move synchronously with the support base and can rotate continuously under the transmission action of the drive mechanism.

[0010] A support mechanism is provided between the drilling mechanism and the support base, and the support mechanism can provide elastic support for the drilling mechanism.

[0011] In a further technical solution, the drive mechanism includes a motor and a threaded rod. The motor is fixedly connected to the moving frame, the threaded rod is fixedly connected to the output shaft of the motor, and the threaded rod is threadedly connected to the support seat.

[0012] In a further technical solution, the drilling mechanism includes a drill shaft, blades, a rotating base, and a transmission assembly;

[0013] The rotating seat is slidably connected to the inner wall of the support seat, and the support mechanism can provide elastic support for the rotating seat.

[0014] The drill shaft is rotatably connected to the rotating base. The drill shaft is helically equipped with blades and is hollow inside. The transmission assembly is disposed between the threaded rod and the drill shaft and is used to drive the drill shaft to rotate continuously.

[0015] In a further technical solution, the transmission assembly includes a gear shaft, a gear sleeve, and a belt drive pair;

[0016] The gear shaft is rotatably connected to the moving frame, the gear sleeve is fixedly connected to the drill shaft, and the gear sleeve meshes with the gear shaft. The belt drive pair is arranged between the threaded rod and the gear shaft.

[0017] In a further technical solution, the support mechanism includes a first spring, an arc-shaped rod, and an elastic component;

[0018] The first spring is disposed between the inner end faces of the rotating seat and the support seat. Arc-shaped rods are provided on both sides of the rotating seat. The arc-shaped rods are in contact with the rotating seat. One end of each arc-shaped rod is rotatably connected to the inner end face of the support seat. The other end of each arc-shaped rod is connected to an elastic component, which is used to elastically limit the arc-shaped rod.

[0019] In a further technical solution, the elastic component includes a guide rod, a second spring, a sleeve, a plug rod, a nut, and a spring baffle.

[0020] The guide rod is fixedly connected to the fixed seat on the support base, the sleeve is slidably connected to the guide rod, the guide rod passes through the spring baffle, the second spring is sleeved on the outside of the guide rod, and the nut is threadedly connected to the guide rod;

[0021] One end of the insertion rod is fixedly connected to the sleeve, and the other end of the insertion rod is inserted into the groove on the arc-shaped rod.

[0022] In a further technical solution, the limiting mechanism includes a rack, a gear, a connecting seat, a No. 3 spring, a push plate, and an adjusting rod;

[0023] The movable frame is provided with racks on both sides, and an adjusting rod is provided on one side of the rack. The adjusting rod is rotatably connected to the positioning seat on the support base. The adjusting rod is threadedly connected to a push plate. The connecting seat passes through the push plate. A No. 3 spring is provided between the push plate and the connecting seat. The connecting seat is rotatably connected to a gear, and the gear meshes with the rack.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0025] The present invention provides a drilling and coring device for tunnel construction. In use, the motor drives the threaded rod to rotate, and the threaded rod drives the support seat to move vertically through the threaded transmission. When the support seat drives the drill shaft to move vertically in sync, the threaded rod drives the gear shaft to rotate through the belt transmission pair. The gear shaft drives the drill shaft to rotate continuously through meshing with the gear sleeve, so that the drill shaft is inserted into the ground to drill and sample soil.

[0026] The present invention provides a core drilling device for tunnel construction. The second spring provides elastic support for the rotating seat through the insertion of the insertion rod and the arc rod. When the drill shaft encounters hard soil, it vibrates back and forth under the action of the second spring and the first spring, thereby converting the downward impact force into the reciprocating impact force and increasing the soil breaking effect of the drill shaft.

[0027] The present invention provides a core drilling device for tunnel construction. By rotating the nut, the nut moves along the guide rod through the thread transmission. The nut pushes the spring baffle, the spring baffle pushes the second spring to extend and retract, the second spring pushes the sleeve, and the insertion rod pushes the arc rod to rotate, thereby changing the elastic support force of the arc rod on the drill shaft.

[0028] The present invention provides a core drilling device for tunnel construction. A No. 3 spring pulls the gear and rack to mesh elastically, and the meshing of the gear and rack increases the stability of the support. Rotating the adjusting rod pushes the push plate through the threaded transmission, and the push plate pushes the No. 3 spring, thereby adjusting the elastic force on the gear. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the present invention;

[0030] Figure 2 for Figure 1 A partial schematic diagram;

[0031] Figure 3 for Figure 2 Enlarged structural diagram of region A in the middle;

[0032] Figure 4 This is a partial schematic diagram of the support mechanism.

[0033] In the attached diagram: 1. Moving frame; 2. Support base; 3. Limiting mechanism; 31. Rack; 32. Gear; 33. Connecting seat; 34. Spring No. 3; 35. Push plate; 36. Adjusting rod; 4. Drive mechanism; 41. Motor; 42. Threaded rod; 5. Drilling mechanism; 51. Drill shaft; 52. Blade; 53. Rotating seat; 54. Transmission assembly; 54. Gear shaft; 541. Gear sleeve; 542. Belt drive pair; 6. Support mechanism; 61. Spring No. 1; 62. Arc rod; 63. Elastic component; 631. Guide rod; 632. Spring No. 2; 633. Sleeve; 634. Insert rod; 635. Nut; 636. Spring baffle; 7. Positioning rod. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0035] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0036] like Figures 1-4 As shown, a core drilling device for tunnel construction provided by the present invention includes a movable frame 1, wherein the movable frame 1 is threadedly connected to a positioning rod 7, and further includes:

[0037] A support base 2 is disposed inside the movable frame 1, and a limiting mechanism 3 is provided between the support base 2 and the movable frame 1, and the limiting mechanism 3 elastically abuts against the movable frame 1;

[0038] The movable frame 1 is connected to a drive mechanism 4, which can drive the support base 2 to move vertically along the movable frame 1.

[0039] The support base 2 is connected to a drilling mechanism 5, which can move synchronously with the support base 2. At the same time, under the transmission action of the drive mechanism 4, the drilling mechanism 5 can rotate continuously.

[0040] A support mechanism 6 is provided between the drilling mechanism 5 and the support base 2, and the support mechanism 6 can provide elastic support for the drilling mechanism 5.

[0041] In use, the drive mechanism 4 drives the support base 2 to move vertically along the moving frame 1. The drilling mechanism 5 can move synchronously with the support base 2. At the same time, under the transmission action of the drive mechanism 4, the drilling mechanism 5 can rotate continuously, so that the drilling mechanism 5 can be inserted into the ground to drill soil samples. At this time, the support mechanism 6 provides elastic support for the drilling mechanism 5, thereby avoiding rigid damage when the drilling mechanism 5 comes into contact with the ground.

[0042] The limiting mechanism 3 elastically abuts against the movable frame 1, thereby increasing the stability of the support base 2 when it moves.

[0043] In this embodiment of the invention, as a preferred embodiment, the driving mechanism 4 includes a motor 41 and a threaded rod 42. The motor 41 is fixedly connected to the movable frame 1, the threaded rod 42 is fixedly connected to the output shaft of the motor 41, and the threaded rod 42 is threadedly connected to the support base 2.

[0044] Motor 41 drives threaded rod 42 to rotate, and threaded rod 42 drives support seat 2 to move vertically through threaded transmission.

[0045] In this embodiment of the invention, as a preferred embodiment of the invention, the drilling mechanism 5 includes a drill shaft 51, a blade 52, a rotating seat 53, and a transmission assembly 54.

[0046] The rotating seat 53 is slidably connected to the inner wall of the support seat 2, and the support mechanism 6 can provide elastic support for the rotating seat 53.

[0047] The drill shaft 51 is rotatably connected to the rotating seat 53. The drill shaft 51 is helically provided with blades 52. The drill shaft 51 is hollow inside. The transmission assembly 54 is disposed between the threaded rod 42 and the drill shaft 51. The transmission assembly 54 is used to drive the drill shaft 51 to rotate continuously.

[0048] The support base 2 drives the drill shaft 51 to move vertically in sync, while the transmission component 54 drives the drill shaft 51 to rotate continuously, thereby drilling and soil extraction.

[0049] In this embodiment of the invention, as a preferred embodiment, the transmission assembly 54 includes a gear shaft 541, a gear sleeve 542, and a belt drive pair 543.

[0050] The gear shaft 541 is rotatably connected to the moving frame 1, the gear sleeve 542 is fixedly connected to the drill shaft 51, and the gear sleeve 542 meshes with the gear shaft 541. The belt drive pair 543 is arranged between the threaded rod 42 and the gear shaft 541.

[0051] When the support seat 2 drives the drill shaft 51 to move vertically in sync, the threaded rod 42 drives the gear shaft 541 to rotate through the belt drive pair 543. The gear shaft 541 drives the drill shaft 51 to rotate continuously by meshing with the gear sleeve 542.

[0052] In this embodiment of the invention, as a preferred embodiment, the support mechanism 6 includes a first spring 61, an arc-shaped rod 62, and an elastic component 63.

[0053] The first spring 61 is disposed between the inner end faces of the rotating seat 53 and the support seat 2. Both sides of the rotating seat 53 are provided with arc-shaped rods 62. The arc-shaped rods 62 are in contact with the rotating seat 53. One end of the arc-shaped rods 62 is rotatably connected to the inner end face of the support seat 2. The other end of the arc-shaped rods 62 is connected to an elastic component 63. The elastic component 63 is used to elastically limit the arc-shaped rods 62.

[0054] The arc-shaped rod 62 supports the rotating seat 53, thereby supporting the drill shaft 51; at the same time, the elastic component 63 is used to elastically limit the arc-shaped rod 62.

[0055] In this embodiment of the invention, as a preferred embodiment, the elastic component 63 includes a guide rod 631, a second spring 632, a sleeve 633, a plug rod 634, a nut 635, and a spring baffle 636.

[0056] The guide rod 631 is fixedly connected to the fixed seat on the support base 2, the sleeve 633 is slidably connected to the guide rod 631, the guide rod 631 passes through the spring baffle 636, the second spring 632 is sleeved on the outside of the guide rod 631, and the nut 635 is threadedly connected to the guide rod 631.

[0057] One end of the insertion rod 634 is fixedly connected to the sleeve 633, and the other end of the insertion rod 634 is inserted into the groove on the arc-shaped rod 62.

[0058] The second spring 632 provides elastic support to the rotating seat 53 by connecting the insert rod 634 to the arc-shaped rod 62. When the nut 635 is rotated, it moves along the guide rod 631 through thread transmission. The nut 635 pushes the spring baffle 636, which in turn pushes the second spring 632 to extend and retract. The second spring 632 pushes the sleeve 633, and the insert rod 634 pushes the arc-shaped rod 62 to rotate, thereby changing the elastic support force of the arc-shaped rod 62 on the drill shaft 51.

[0059] In this embodiment of the invention, as a preferred embodiment, the limiting mechanism 3 includes a rack 31, a gear 32, a connecting seat 33, a No. 3 spring 34, a push plate 35, and an adjusting rod 36.

[0060] The movable frame 1 is provided with racks 31 on both sides, and an adjusting rod 36 is provided on one side of the racks 31. The adjusting rod 36 is rotatably connected to the positioning seat on the support base 2. The adjusting rod 36 is threadedly connected to a push plate 35. The connecting seat 33 passes through the push plate 35. A No. 3 spring 34 is provided between the push plate 35 and the connecting seat 33. The connecting seat 33 is rotatably connected to a gear 32, and the gear 32 meshes with the racks 31.

[0061] Spring 34 pulls gear 32 and rack 31 into elastic engagement, which increases the stability of support 2. Rotating adjustment rod 36 pushes push plate 35 through threaded transmission, and push plate 35 pushes spring 34, thereby adjusting the elastic force on gear 32.

[0062] In use, the motor 41 drives the threaded rod 42 to rotate, and the threaded rod 42 drives the support seat 2 to move vertically through the threaded transmission. When the support seat 2 drives the drill shaft 51 to move vertically in sync, the threaded rod 42 drives the gear shaft 541 to rotate through the belt drive pair 543. The gear shaft 541 drives the drill shaft 51 to rotate continuously by meshing with the gear sleeve 542, so that the drill shaft 51 is inserted into the ground to drill and take soil samples.

[0063] The second spring 632 is connected to the arc rod 62 through the insertion of the insertion rod 634, thereby providing elastic support for the rotating seat 53. When the drill shaft 51 encounters hard soil, it vibrates back and forth under the action of the second spring 632 and the first spring 61, thereby converting the downward impact force into the reciprocating impact force and increasing the soil breaking effect of the drill shaft 51.

[0064] Rotating the nut 635 causes it to move along the guide rod 631 via a threaded drive. The nut 635 pushes the spring baffle 636, which in turn pushes the second spring 632 to extend and retract. The second spring 632 pushes the sleeve 633, and the insert rod 634 pushes the arc rod 62 to rotate, thereby changing the elastic support force of the arc rod 62 on the drill shaft 51.

[0065] Spring 34 pulls gear 32 and rack 31 into elastic engagement, which increases the stability of support 2. Rotating adjustment rod 36 pushes push plate 35 through threaded transmission, and push plate 35 pushes spring 34, thereby adjusting the elastic force on gear 32.

[0066] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0067] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A core drilling device for tunnel construction, comprising a movable frame, characterized in that, Also includes: A support base is provided inside the movable frame, and a limiting mechanism is provided between the support base and the movable frame, wherein the limiting mechanism elastically abuts against the movable frame. The movable frame is connected to a drive mechanism, which can drive the support base to move vertically along the movable frame; The support base is connected to a drilling mechanism, which can move synchronously with the support base and can rotate continuously under the transmission action of the drive mechanism. A support mechanism is provided between the drilling mechanism and the support base, and the support mechanism can provide elastic support for the drilling mechanism. The support mechanism includes a first spring, an arc rod, and an elastic component; The first spring is disposed between the inner end faces of the rotating seat and the support seat. Both sides of the rotating seat are provided with arc-shaped rods. The arc-shaped rods are in contact with the rotating seat. One end of each arc-shaped rod is rotatably connected to the inner end face of the support seat. The other end of each arc-shaped rod is connected to an elastic component, which is used to elastically limit the arc-shaped rod. The elastic component includes a guide rod, a second spring, a sleeve, a plug rod, a nut, and a spring baffle. The guide rod is fixedly connected to the fixed seat on the support base, the sleeve is slidably connected to the guide rod, the guide rod passes through the spring baffle, the second spring is sleeved on the outside of the guide rod, and the nut is threadedly connected to the guide rod; One end of the insertion rod is fixedly connected to the sleeve, and the other end of the insertion rod is inserted into the groove on the arc-shaped rod.

2. The core drilling device for tunnel construction according to claim 1, characterized in that, The drive mechanism includes a motor and a threaded rod. The motor is fixedly connected to the moving frame, the threaded rod is fixedly connected to the output shaft of the motor, and the threaded rod is threadedly connected to the support base.

3. The core drilling device for tunnel construction according to claim 2, characterized in that, The drilling mechanism includes a drill shaft, blades, a rotating base, and a transmission assembly; The rotating seat is slidably connected to the inner wall of the support seat, and the support mechanism can provide elastic support for the rotating seat. The drill shaft is rotatably connected to the rotating base. The drill shaft is helically equipped with blades and is hollow inside. The transmission assembly is disposed between the threaded rod and the drill shaft and is used to drive the drill shaft to rotate continuously.

4. The core drilling device for tunnel construction according to claim 3, characterized in that, The transmission assembly includes a gear shaft, a gear sleeve, and a belt drive pair; The gear shaft is rotatably connected to the moving frame, the gear sleeve is fixedly connected to the drill shaft, and the gear sleeve meshes with the gear shaft. The belt drive pair is arranged between the threaded rod and the gear shaft.

5. The core drilling device for tunnel construction according to claim 1, characterized in that, The limiting mechanism includes a rack, a gear, a connecting seat, a No. 3 spring, a push plate, and an adjusting rod; The movable frame is provided with racks on both sides, and an adjusting rod is provided on one side of the rack. The adjusting rod is rotatably connected to the positioning seat on the support base. The adjusting rod is threadedly connected to a push plate. The connecting seat passes through the push plate. A No. 3 spring is provided between the push plate and the connecting seat. The connecting seat is rotatably connected to a gear, and the gear meshes with the rack.

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