Drilling machine and drill bit connecting structure capable of assisting power instantly
By designing a drilling rig and drill bit connection structure that can provide instant assistance, and by utilizing the combination of the transmission assembly and elastic elements, the problems of insufficient power and stuck drill bits in the drilling rig are solved, achieving efficient drilling and equipment durability, and improving the application range and operating efficiency of the drilling rig.
Patent Information
- Application Number
- CN202520449192.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-01-30
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Existing drilling rigs lack the ability to deliver instantaneous bursts of power during power transmission and use, resulting in low efficiency when drilling into hard rocks or when the drill bit gets stuck. Furthermore, the fixed connection between the drill bit and the drilling rig can easily lead to the drill bit getting stuck and equipment damage.
The drilling rig and drill bit connection structure adopts an instantaneous power-assisted design. Through the design of the transmission assembly, power output shaft and housing, and by using elastic elements and ball bearings, the power spindle and power output shaft can be instantly amplified. This includes the rounded corner design and symmetrical layout of the impact block and passive block, and the automatic adjustment of the power output mode to cope with different working conditions.
It ensures efficient power transmission during normal drilling, provides instant assistance when encountering hard rocks or stuck drill bits, improves work efficiency, reduces equipment wear and maintenance costs, and broadens the scope of application.
Smart Images
Figure CN223854179U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a drilling rig technical field, concretely relates to a kind of connecting structure of drilling rig and drill bit of instantaneous helping. BACKGROUND
[0002] In the field of drilling operation, water drill, electric drill and other drilling rig are widely used. But the existing drilling rig has significant defects in power transmission and use process. At present, the drilling rig power device is generally connected with drill bit or drill rod through reduction gear, and the reduction gear only outputs rotary driving force. This connection mode and power output characteristics cause many problems: first, the motor output power is stable, and lacks instantaneous burst power output capability. When drilling into hard rock, encountering resistance heavy operating environment such as steel bar, once the power is insufficient, the drilling rig is difficult to continue drilling, which seriously affects the operating efficiency. Second, the drill bit is connected and fixed with the drilling rig. When sticking occurs, if the drilling rig is handheld, the arm is easily injured by reaction force, and the stuck drill bit is difficult to remove, which not only increases the operating cost, but also may damage the drill bit and related equipment. SUMMARY
[0003] Therefore, the utility model provides a kind of connecting structure of drilling rig and drill bit of instantaneous helping to improve instantaneous power when sticking or power deficiency.
[0004] To achieve the above purpose, the utility model adopts the following technical scheme:
[0005] A kind of connecting structure of drilling rig and drill bit of instantaneous helping, including transmission assembly, power output shaft and shell;
[0006] The front end surface of the shell is provided with power output shaft in a circumferential rotation and axial locking manner, the front end of the power output shaft is used to connect drill bit, and the rear end surface of the power output shaft is fixed with passive block;
[0007] The transmission assembly includes power spindle, sleeve and elastic element, the outer wall of the power spindle is provided with spiral groove, and the front end of the sleeve is fixed with impact block;
[0008] The rear end of the power spindle is used to be drivenly connected with drilling rig power device, the outer periphery of the rear part of the power spindle is fixed with baffle, the inner periphery of the sleeve near the middle part is embedded with ball, the sleeve is coaxially sleeved on the middle front part of the power spindle, and the ball is slidably connected with the spiral groove, so that the sleeve can rotate and move along the extension direction of the spiral groove, and the elastic element is sleeved on the power spindle, and the two ends are respectively abutted on the opposite surfaces of the baffle and the sleeve;
[0009] The impact block is driven or intermittently impacts passive block rotation by the required force size of power output shaft rotation.
[0010] Optionally, the rotation center points of the power main shaft, the power output shaft, the sleeve, the impact block and the passive block are coaxially arranged, and the edges of the mutually matched surfaces of the impact block and the passive block are all rounded.
[0011] Optionally, the impact block and the passive block are both two blocks and are symmetrically arranged with the central axis of the shell.
[0012] Optionally, a recess is formed in the central axis of the rear end surface of the power output shaft, and the front end of the power main shaft has a convex column, which is in clearance fit with the recess.
[0013] Optionally, the spiral grooves are two parallel grooves, the front end of each spiral groove is an open end, and the rear end of each spiral groove is a closed end, and the two balls are symmetrically arranged and correspond to the spiral grooves one by one.
[0014] Optionally, an axle hole is formed in the central axis of the front end surface of the shell, and an axle seat is fixedly arranged on the inner side of the front end surface of the shell around the axle hole, the power output shaft is in rotary fit with the axle seat and movably penetrates the axle hole.
[0015] Optionally, the inner wall of the rear end of the sleeve is further provided with a ring table, and the front end of the elastic element abuts against the ring table.
[0016] Optionally, the elastic element is a compression spring.
[0017] The beneficial effects of the utility model are as follows:
[0018] 1. Under normal drilling conditions, the drill bit connecting structure can ensure efficient transmission of power, so that the drill bit can stably and rapidly rotate, when the drilling machine encounters hard rock or drill sticking and other complex conditions, the instantaneous power assisting function of the connecting structure can help the drill bit to quickly overcome the resistance, prevent the drill bit from being damaged, effectively reduce the operation stagnation time, and improve the overall operation efficiency.
[0019] 2. The power output mode can be automatically adjusted according to the drilling resistance, and good working performance can be maintained on different materials with different hardnesses such as ordinary wall bodies and hard rocks, so that the application range of the drilling machine is greatly widened.
[0020] 3. The rounded design, symmetric layout and reasonable clearance fit of the matching surfaces of the impact block and the passive block effectively reduce the wear between the components and the vibration of the equipment, prolong the service life of the key components of the equipment, and reduce the maintenance cost and replacement frequency of the equipment. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is a three-dimensional schematic view of a drilling machine and a drill bit connecting structure with instantaneous power assisting function according to an embodiment of the utility model;
[0022] Figure 2 is Figure 1 an exploded view of
[0023] Figure 3 is Figure 2 a perspective view of the power output shaft in
[0024] Figure 4 is Figure 2 a front view of the power output shaft and the impact block and the passive block in
[0025] Figure 5 is Figure 2 a front view of the power output shaft and the impact block and the passive block in axial separation in
[0026] Figure 6 is Figure 2 a front view of the transmission assembly in
[0027] Figure 7 is Figure 6 an A-A sectional view of the transmission assembly (the ball is located at the front end of the spiral groove) in
[0028] Figure 8 is Figure 6 an A-A sectional view of the transmission assembly (the ball is located at the rear end of the spiral groove) in
[0029] Reference signs:
[0030] transmission assembly 10, power spindle 11, spiral groove 111, baffle 112, convex column 113, sleeve 12, ball 121, impact block 122, ring table 123, elastic element 13, power output shaft 20, passive block 21, recessed hole 22, shell 30, shaft hole 31. DETAILED DESCRIPTION
[0031] The technical scheme of the utility model will be described in detail below in combination with the drawings and specific embodiments. Identical parts are denoted by the same reference numerals.
[0032] Please refer to Figures 1 to 8 , the utility model discloses a kind of instantaneous helping drill and the connecting structure of drill bit, including transmission assembly 10, power output shaft 20 and shell 30;
[0033] As Figures 1-3 Indicated, the front end surface of shell 30 is with circumferential rotation and axial locking mode and is provided with power output shaft 20, the front end of power output shaft 20 is used to connect drill bit, the rear end surface of this power output shaft 20 is fixed with passive block 21;
[0034] Specifically, the shell 30 is a cylindrical structure, an axial hole 31 is formed in the center of the front end surface of the shell 30 in the axial direction, a shaft seat (not shown in the figure) is fixedly arranged on the inner side of the front end surface of the shell 30 around the axial hole 31, the power output shaft 20 is rotationally connected with the shaft seat and penetrates the axial hole 31, and the power output shaft 20 can rotate around the shell 30.
[0035] As shown in Figure 2 , Figures 6-8 , the transmission assembly 10 comprises a power spindle 11, a sleeve 12 and an elastic element 13, a helical groove 111 is formed in the outer wall of the power spindle 11, and an impact block 122 is fixedly arranged at the front end of the sleeve 12.
[0036] Specifically, the rear end of the power spindle 11 is used to be drivingly connected with a drilling rig power device, and it should be noted that in actual use, the power spindle 11 can be connected through a speed reduction mechanism, so as to increase the torque of the power spindle 11 and improve the power transmission efficiency.
[0037] A baffle 112 is fixedly arranged on the outer circumferential surface of the rear part of the power spindle 11, the baffle 112 can be fixedly connected with the rear end of the shell 30, so that the shell 30 rotates synchronously with the power spindle 11, a plurality of rolling balls 121 are embedded in the inner circumferential surface of the sleeve 12 near the middle part of the sleeve 12, the sleeve 12 is coaxially sleeved on the middle front part of the power spindle 11, the rolling balls 121 are in sliding connection with the helical groove 111, so that the sleeve 12 can rotate and move along the extension direction of the helical groove 111, and the elastic element 13 is sleeved on the power spindle 11 and abuts against the opposite surfaces of the baffle 112 and the sleeve 12 at two ends.
[0038] The impact block 122 is driven to rotate by the driving force required by the rotation of the power output shaft 20 or intermittently impacts the passive block 21.
[0039] The working principle of the connecting structure between the drilling rig and the drill bit according to the embodiment of the utility model is as follows: before use, the rear end of the power spindle 11 needs to be drivingly connected with a drilling rig power device, and the front end of the power output shaft 20 is connected with a drill bit.
[0040] As shown in Figures 4 to 8 , the power spindle 11 is only rotatable and cannot be moved, in the initial state, the elastic element 13 is in a natural reset state, and the rolling balls 121 are located in the front end of the helical groove 111, when the drilling rig power device is started and drives the power spindle 11 to rotate, the power spindle 11 drives the sleeve 12 to rotate synchronously through the cooperation of the rolling balls 121 and the helical groove 111, at this time, if the radial rotation resistance of the sleeve 12 is less than or equal to the radial driving force of the power spindle 11, the impact block 122 fixedly arranged at the front end of the sleeve 12 and the passive block 21 at the rear end of the power output shaft 20 are attached to each other in the circumferential direction, the impact block 122 drives the passive block 21 to rotate in the form of surface attachment, and then the power spindle 11 drives the power output shaft 20 to rotate at a high speed synchronously, so as to drive the drill bit to normally drill and work.
[0041] When encountering hard rock, wall and other conditions with large resistance, or when the drill is stuck, the radial rotation resistance of the sleeve 12 is greater than the radial driving force of the power spindle 11, at this time, the sleeve 12 will rotate and move backward along the direction of the spiral groove 111 until the impact block 122 completely separates from the passive block 21, in this process, the elastic element 13 is compressed by the sleeve 12 and stores elastic potential energy. When the impact block 122 is separated from the passive block 21, the sleeve 12 rotates and moves forward along the direction of the spiral groove 111 under the driving of the reset force of the elastic element 13, so that the impact block 122 is close to the passive block 21 again. At this time, the impact block 122 not only has the driving force of the power spindle 11, but also superimposes the circumferential impact force generated by the reset of the elastic element 13, and the combined force of the two impacts the passive block 21, thereby increasing the force of the impact block 122 instantaneously. Such repeated action makes the power output shaft 20 obtain stronger impact force, helping the drill bit to get out of the stuck situation or break through the relatively hard rock mass.
[0042] In the embodiment of the utility model, the rotation center points of the power spindle 11, the power output shaft 20, the sleeve 12, the impact block 122 and the passive block 21 are coaxially arranged, and the edges and corners of the mutually matched surfaces of the impact block 122 and the passive block 21 are designed as round corners, which greatly reduces the wear of the impact block 122 and the passive block 21 during the engagement and separation process, and prolongs the service life of the components.
[0043] The impact block 122 and the passive block 21 are both arranged as two blocks and symmetrically distributed along the central axis of the outer shell 30. The symmetrical layout makes the impact force more uniformly distributed in the circumferential direction, effectively avoiding equipment vibration and deviation caused by uneven force. The central angle corresponding to the impact block 122 is preferably 15°-30°, and the central angle corresponding to the passive block 21 is preferably 30°-45°. Within this angle range, the larger the included angle formed by the impact block 122 and the passive block 21 in the circumferential direction, the greater the instantaneous impact force generated, and the better the response to complex working conditions.
[0044] A recess hole 22 is formed in the central axis of the rear end surface of the power output shaft 20, and the front end of the power spindle 11 has a convex column 113. The convex column 113 and the recess hole 22 are clearance fit. This mode not only facilitates the rotation fit between the power output shaft 20 and the power spindle 11, but also stabilizes the concentricity of the power output shaft 20 and the power spindle 11 to a certain extent.
[0045] The spiral groove 111 is designed as two parallel grooves, with the front end being an open end and the rear end being a closed end. The two balls 121 are symmetrically arranged and correspond to the spiral grooves 111 one by one. The uniform transmission of the force of the two balls 121 greatly improves the stability of the cooperation between the sleeve 12 and the power spindle 11, effectively avoiding the jamming and deviation of the sleeve 12 during the rotation and movement.
[0046] In the embodiment of the utility model, the rear end inner wall of sleeve 12 is further provided with ring platform 123, the front end of elastic element 13 abuts on ring platform 123, and elastic element 13 is compression spring, and compression spring has the advantages of stable elastic performance, low cost and easy replacement as elastic element 13. In the long-term use process, the compression spring can keep stable elastic recovery force, and ensure that the impact block 122 can reliably impact the passive block 21 under different working conditions, and provide stable instantaneous help for the drill bit.
[0047] The use effect of the connecting structure of the drill rig and the drill bit with instantaneous help in the embodiment of the utility model is as follows:
[0048] 1. Under normal drilling conditions, the drill bit connecting structure can ensure efficient transmission of power, so that the drill bit rotates stably and at high speed, and when the drill rig encounters hard rock or sticking and other complex conditions, the instantaneous help function of the connecting structure can help the drill bit overcome resistance quickly, prevent injury, effectively reduce operation downtime and improve overall operation efficiency.
[0049] 2. The power output mode can be automatically adjusted according to the drilling resistance, and whether drilling in ordinary walls or hard rock and other materials with different hardness, the drill bit can maintain good working performance, greatly widening the application range of the drill rig.
[0050] 3. The round corner design, symmetrical layout and reasonable gap cooperation of the impact block and the passive block cooperation surface effectively reduce the wear and tear between the parts and the vibration of the equipment, prolong the service life of the key components of the equipment, reduce the maintenance cost and replacement frequency of the equipment.
[0051] The above describes the technical scheme of the utility model in detail in combination with specific embodiments, and the specific embodiments are described to help understand the idea of the utility model. The deduction and deformation of the technical personnel in the art on the basis of the specific embodiments of the utility model also belong to the protection scope of the utility model.
Claims
1. A connection structure of a drill and a drill bit with instantaneous assist, characterized by: The transmission assembly (10), the power output shaft (20) and the shell (30) are provided. The front end of the power output shaft (20) is used for connecting a drill bit, and the rear end surface of the power output shaft (20) is fixedly provided with a passive block (21). The transmission assembly (10) comprises a power main shaft (11), a sleeve (12) and an elastic element (13), the outer wall of the power main shaft (11) is provided with a spiral groove (111), the front end of the sleeve (12) is fixedly provided with an impact block (122), the rear end of the power main shaft (11) is used for driving connection with a drilling machine power device, the outer circumferential surface of the rear part of the power main shaft (11) is fixedly provided with a baffle (112), the inner circumferential surface of the middle part of the sleeve (12) is embedded with a ball (121), the sleeve (12) is coaxially sleeved on the middle front part of the power main shaft (11), and the ball (121) and the spiral groove (111) are in sliding fit, so that the sleeve (12) can rotate and move along the extension direction of the spiral groove (111), and the elastic element (13) is sleeved on the power main shaft (11) and abuts against the opposite surfaces of the baffle (112) and the sleeve (12) at both ends. The impact block (122) is engaged or intermittently impacts the passive block (21) to rotate under the action of the required driving force of the power output shaft (20).
2. The instant-boostable drill and bit connection of claim 1, wherein, The rotation center points of the power main shaft (11), the power output shaft (20), the sleeve (12), the impact block (122) and the passive block (21) are coaxially arranged, and the edges and corners of the mutually matched surfaces of the impact block (122) and the passive block (21) are all rounded.
3. The instant-boostable drill and bit connection of claim 2, wherein, The impact block (122) and the passive block (21) are both two blocks and are symmetrically arranged with the central axis of the shell (30) as the center.
4. The connection structure of the drilling machine and the drill bit according to claim 3, wherein The central axis of the rear end surface of the power output shaft (20) is provided with a recess (22), the front end of the power main shaft (11) has a convex column (113), and the convex column (113) and the recess (22) are in clearance rotation fit.
5. The instant-boostable drill and bit connection of claim 3, wherein, The spiral grooves (111) are two parallel spiral grooves, the front end of the spiral groove (111) is an open end, and the rear end is a closed end, the balls (121) are two symmetric balls and are in one-to-one fit with the spiral grooves (111).
6. The instant power-assisted drill and bit coupling structure of claim 1, wherein, The central axis of the front end surface of the shell (30) is provided with a shaft hole (31), the inner side of the front end surface of the shell (30) is fixedly provided with a shaft seat around the shaft hole (31), the power output shaft (20) is in rotation fit with the shaft seat and movably penetrates the shaft hole (31).
7. The instant power-assisted drill and bit coupling structure of claim 1, wherein, The rear end inner wall of the sleeve (12) is further provided with a ring table (123), and the front end of the elastic element (13) abuts against the ring table (123).
8. The instant-boostable drill and bit connection of claim 7, wherein, The elastic element (13) is a compression spring.