Rock edge breaking hob

Abstract

The invention discloses a rock breaking edge hobbing cutter, which relates to the technical field of construction devices, and is characterized by comprising a cutter holder, a mounting plate arranged on the cutter holder and an edge hobbing cutter main body with two ends rotatably arranged on the cutter holder, the edge hobbing cutter main body comprises a movable shaft of which the two ends are connected to the cutter holder through bearings, a plurality of groups of cutter tooth plates which are uniformly distributed on the movable shaft and are hinged with the movable shaft, a movable group frame arranged between the movable shaft and the cutter tooth plates, and a driving assembly arranged in the cutter holder. According to the invention, the cutter tooth plates on the edge hob main body are arranged into a plurality of groups of movable unfolding and folding forms, so that the cutting surface of the edge hob main body has two states that the cutting surface can be adjusted to form an included angle with a digging surface or be parallel to the digging surface, and the edge hob main body can be adjusted to an inclined state for digging during advancing; and when excavation is about to be finished, the side hob is adjusted to be parallel to the excavation face to conduct eccentric hole straightening, so that the side hob has the advantages of two side hobs with different cutting face angles at the same time, and the overall excavation efficiency and the shaft excavation quality are improved.

Description

Technical Field

[0001] The invention relates to the technical field of construction devices, in particular to a rock breaking edge roller. Background Art

[0002] The rock-breaking edge roller is a tool set at the edge of an engineering drill bit for vertical excavation of a vertical mine shaft. Its main function is to cut and crush rocks and cut out the outline of the shaft during the drilling process. The cutting surface of the traditional edge roller has an inclined angle with the excavation surface of the shaft, which makes it have better crushing efficiency, but it cannot form a right-angle edge at the bottom of the shaft, resulting in obstacles to the installation of the barrel in the later stage. When using an edge roller with a cutting surface parallel to the excavation surface of the shaft, it can move close to the bottom of the shaft, the force on the drill bit body is more evenly distributed, the overall movement is more stable, and the bottom of the shaft can also be directly made to form a right angle with the hole. However, this form of edge roller results in poor cutting and crushing effect when facing harder rocks, which will reduce excavation efficiency.

[0003] In view of this, a design or technical improvement is now proposed to solve the above problems.

[0004] The above contents are only used to assist in understanding the technical solution of the present invention, and do not constitute an admission that the above contents are the closest prior art. Summary of the invention

[0005] The purpose of the present invention is to solve the above-mentioned shortcomings and provide a rock breaking edge roller.

[0006] In order to solve the above technical problems, the present invention adopts the following technical solutions:

[0007] The rock breaking edge roller comprises a cutter seat, a mounting plate arranged on the cutter seat for mounting and connecting with a drill bit body, and an edge roller body rotatably arranged on the cutter seat at both ends, the edge roller body comprising a movable shaft with bearings at both ends connected to the cutter seat, a plurality of groups of tooth plates evenly arranged on the movable shaft and hinged to the movable shaft, a movable group frame arranged between the movable shaft and the tooth plates, and a driving component arranged in the cutter seat; the driving component drives the movable group frame to enable the tooth plates to have two states: expanded and retracted.

[0008] Furthermore, a fixed disk is arranged on the movable shaft, and one end of the knife tooth plate is hinged to the fixed disk, so that the knife tooth plate can rotate, expand and retract around the hinge point with the fixed disk as the axis.

[0009] Furthermore, the movable assembly frame includes a sliding ring slidably arranged on the outer surface of the movable shaft, and a connecting rod arm with one end hinged to the fixed disk and the other end hinged to the end of the tooth plate away from the fixed disk and close to the movable shaft.

[0010] Furthermore, a first assembly cavity is provided in the tool holder, the interior of the movable shaft is hollow, and the driving assembly includes a threaded rod rotatably arranged in the movable shaft, a movable sleeve disk threadedly sleeved on the threaded rod and slidingly engaged with the inner wall of the movable shaft, and a driving motor provided in the first assembly cavity for driving the movable sleeve disk to rotate; limiting slots are evenly distributed on the movable shaft, and the movable sleeve disk and the sliding ring are connected by a connecting block that slides in the limiting slots.

[0011] Furthermore, an opening is formed at one end of the movable shaft close to the driving motor, one end of the threaded rod extends out of the opening and a driven gear is provided at the upper end thereof, and the driving motor is connected to a driving gear meshing with the driven gear via an output shaft.

[0012] Furthermore, the driving motor is a non-self-locking motor.

[0013] Furthermore, a second assembly cavity is provided on the tool holder, and the second assembly cavity is used to place a control board that can receive wireless signals and is electrically connected to the drive motor.

[0014] Compared with the prior art, the beneficial effect of the present solution is as follows: the present invention arranges the tooth plates on the edge roller body into multiple groups of movable expansion and contraction forms, so that the cutting surface can be adjusted to have two states of having an angle with the excavation surface or being parallel to the excavation surface, so that it can be adjusted to an inclined state for excavation during movement, thereby improving the travel efficiency, and when the excavation is about to be completed, it can be adjusted to a state parallel to the excavation surface for offset hole straightening, thereby making it have the advantages of two edge rollers with different cutting surface angles at the same time, thereby improving the overall excavation efficiency and the quality of wellbore excavation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings constituting a part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1 1 is a schematic diagram of the installation of the knife tooth plate in the folded state according to the embodiment of the present invention;

[0017] Figure 2 1 is a schematic diagram of the installation of the knife tooth plate in the unfolded state according to the embodiment of the present invention;

[0018] Figure 3 Schematic diagram of the unfolded state of the knife tooth plate in an embodiment of the present invention;

[0019] Figure 4 is a front view schematic diagram of a knife tooth plate in a folded state in an embodiment of the present invention;

[0020] Figure 5 is a schematic side view of a knife tooth plate in a folded state in an embodiment of the present invention;

[0021] Figure 6 is a cross-sectional perspective schematic diagram of a knife holder in an embodiment of the present invention;

[0022] Figure 7 It is a schematic structural diagram of the portion between the cutter plate and the movable shaft in an embodiment of the present invention;

[0023] Figure 8 is a three-dimensional schematic diagram of the internal structure of the movable shaft in an embodiment of the present invention;

[0024] Fig. 9 is a schematic three-dimensional diagram of the combination of the movable shaft and the fixed disk in an embodiment of the present invention;

[0025] Fig.10 Schematic diagram of the matching relationship between the threaded rod and the movable sleeve disc in an embodiment of the present invention;

[0026] Fig.11 It is a schematic diagram of the matching relationship between the driven gear and the driving gear in an embodiment of the present invention.

[0027] In the figure: 1. tool holder; 11. mounting plate; 12. side hob body; 2. movable shaft; 21. tool tooth plate; 22. fixed plate; 3. sliding ring; 31. connecting rod arm; 4. first assembly cavity; 41. threaded rod; 42. movable sleeve; 43. driving motor; 44. limiting slot; 45. connecting block; 5. opening; 51. driven gear; 52. driving gear; 6. second assembly cavity. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

[0029] like Figure 1-11The rock breaking edge roller cutter shown in the figure comprises a cutter seat 1, a mounting plate 11 arranged on the cutter seat 1 for mounting and connecting with a drill bit body, and an edge roller cutter body 12 rotatably arranged on the cutter seat 1 at both ends, the edge roller cutter body 12 comprises a movable shaft 2 with bearings connected to the cutter seat 1 at both ends, a plurality of groups of tooth plates 21 evenly arranged on the movable shaft 2 and hinged to the movable shaft 2, a movable group frame arranged between the movable shaft 2 and the tooth plates 21, and a driving component arranged in the cutter seat 1; the driving component drives the movable group frame to make the tooth plates 21 have two states of expansion and folding, and when the tooth plates 21 are in the folded state, their external cutting surfaces It forms a certain angle with the excavation surface of the wellbore, thereby achieving a better effect of crushing hard rock and a faster excavation speed of the drill bit body. When the tooth plate 21 is in the expanded state, the cutting surface of the edge roller body 12 is parallel to the excavation surface of the wellbore, so that the overall force is more uniform and the cutting is more stable. At the same time, it can also make the bottom of the wellbore and the hole position form a right angle. Therefore, the state of the tooth plate 21 can be adjusted to adapt to operations in different construction periods, so that it can be in a retracted state for drilling when excavation is required, and adjusted to an expanded state when drilling is about to end to straighten the offset holes at the bottom of the wellbore, thereby achieving the operation purpose of high-quality and efficient construction.

[0030] In one embodiment, a fixed disk 22 is provided on the movable shaft 2, and one end of the knife tooth plate 21 is hinged to the fixed disk 22, so that the knife tooth plate 21 can be rotated, expanded and retracted around the hinge point with the fixed disk 22 as the axis, and the movable assembly frame includes a sliding ring 3 slidably arranged on the outer surface of the movable shaft 2, and a connecting rod arm 31 with one end hinged to the fixed disk 22 and the other end hinged to the end of the knife tooth plate 21 away from the fixed disk 22 and close to the movable shaft 2. The sliding ring 3 slides on the movable shaft 2, and then the connecting rod arm 31 is used to push the knife tooth plate 21 to expand and tighten and retract it.

[0031] In one embodiment, a first assembly cavity 4 is provided in the tool holder 1, the interior of the movable shaft 2 is hollow, and the driving assembly includes a threaded rod 41 rotatably arranged in the movable shaft 2, a movable sleeve disk 42 threadedly sleeved on the threaded rod 41 and slidingly engaged with the inner wall of the movable shaft 2, and a driving motor 43 provided in the first assembly cavity 4 for driving the movable sleeve disk 42 to rotate; limiting slots 44 are evenly provided on the movable shaft 2, and the movable sleeve disk 42 is connected to the sliding ring 3 through a connecting block 45 that slides in the limiting slots 44. Since the threaded rod 41 is threadedly connected to the movable sleeve disk 42, the threaded rod 41 will rotate synchronously with the movable shaft 2 under normal conditions, and when it is driven by the driving motor 43 and rotates relative to the movable shaft 2, it will drive the movable sleeve disk 42 to slide on the threaded rod 41, and then the movable sleeve disk 42 drives the external sliding ring 3 to move through the connecting block 45, thereby controlling the expansion and retraction of the knife tooth plate 21.

[0032] In one embodiment, an opening 5 is provided at one end of the movable shaft 2 close to the driving motor 43, one end of the threaded rod 41 extends out from the opening 5 and a driven gear 51 is provided at its upper end, the driving motor 43 is connected to a driving gear 52 meshing with the driven gear 51 through an output shaft, the driven gear 51 and the driving gear 52 can be adjusted to different gear ratios, generally the radius and the number of teeth of the driving gear 52 are smaller than the driven gear 51, thereby increasing the output torque of the driving motor 43 on the threaded rod 41, so that the knife tooth plate 21 can be stably unfolded, and at the same time the driving motor 43 is a non-self-locking motor, so that when the driving motor 43 is not working, the threaded rod 41 will drive the driven gear 51 to rotate synchronously with the movable shaft 2, thereby driving the driving gear 52 to rotate accordingly, so as not to affect the self-rotation state of the threaded rod 41 following the movable shaft 2.

[0033] In one embodiment, a second assembly cavity 6 is further provided on the tool holder 1, and a control board that can receive wireless signals and is electrically connected to the drive motor 43 is placed in the second assembly cavity 6. The drill bit body can perform wired control of the drive motor 43 through internal wiring, and can also control the drive motor 43 by receiving wireless signals sent from the outside through the control board, thereby avoiding the work of wiring on the drill bit.

[0034] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be considered exemplary and non-restrictive in all respects, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention.

Claims

1. A rock breaking side roller cutter, comprising a cutter seat (1), a mounting plate (11) arranged on the cutter seat (1) for mounting and connecting with a drill bit body, and a side roller cutter body (12) rotatably arranged on the cutter seat (1) at both ends, characterized in that: The edge hob body (12) comprises a movable shaft (2) with bearings at both ends connected to the cutter seat (1), a plurality of groups of cutter tooth plates (21) evenly arranged on the movable shaft (2) and hinged to the movable shaft (2), a movable group frame arranged between the movable shaft (2) and the cutter tooth plates (21), and a driving component arranged in the cutter seat (1); The driving assembly drives the movable assembly frame to enable the knife tooth plate (21) to have two states: an unfolded state and a folded state.

2. The rock breaking edge roller according to claim 1, characterized in that: A fixed disk (22) is arranged on the movable shaft (2), and one end of the knife tooth plate (21) is hinged to the fixed disk (22), so that the knife tooth plate (21) rotates, expands and retracts around the hinge point with the fixed disk (22) as the axis.

3. The rock breaking edge roller according to claim 2, characterized in that: The movable assembly frame comprises a sliding ring (3) slidably arranged on the outer surface of the movable shaft (2), and a connecting rod arm (31) with one end hinged on the fixed disk (22) and the other end hinged on the blade plate (21) and the end away from the fixed disk (22) and close to the movable shaft (2).

4. The rock breaking edge roller according to claim 3, characterized in that: The knife seat (1) is provided with a first assembly cavity (4), the interior of the movable shaft (2) is hollow, and the driving assembly comprises a threaded rod (41) rotatably arranged in the movable shaft (2), a movable sleeve disk (42) threadably sleeved on the threaded rod (41) and slidably engaged with the inner wall of the movable shaft (2), and a driving motor (43) arranged in the first assembly cavity (4) for driving the movable sleeve disk (42) to rotate; The movable shaft (2) is evenly provided with limit slots (44), and the movable sleeve (42) is connected to the sliding ring (3) via a connecting block (45) that slides within the limit slots (44).

5. The rock breaking edge roller according to claim 4, characterized in that: An opening (5) is provided at one end of the movable shaft (2) close to the driving motor (43); one end of the threaded rod (41) extends out from the opening (5) and a driven gear (51) is provided at the upper end thereof; the driving motor (43) is connected to a driving gear (52) meshing with the driven gear (51) via an output shaft.

6. The rock breaking edge roller according to claim 4, characterized in that: The driving motor (43) is a non-self-locking motor.

7. The rock breaking edge roller according to claim 6, characterized in that: The knife seat (1) is also provided with a second assembly cavity (6), and the second assembly cavity (6) is used to place a control board that can receive wireless signals and is electrically connected to the drive motor (43).

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