Disclosure of Invention
An object of the present disclosure is to provide a positioning device of a drilling machine rotating platform, which can effectively prevent the drilling machine from shaking in the operation and improve the accuracy of drilling of the drilling machine on the basis of guaranteeing the rotation operation of the drilling machine.
Another object of the present disclosure is to provide a drilling machine that is equipped with the positioning device of the drilling machine rotating platform provided by the present disclosure.
In order to achieve the above object, the present disclosure provides a positioning device of a rotary platform of a drilling machine, the positioning device including a fixed tooth block, a first locking mechanism and a second locking mechanism, the fixed tooth block being rotatably mounted on the rotary platform to have a first working position in which the fixed tooth block is engaged with a slewing bearing outer gear ring below the rotary platform and locked by the first locking mechanism, and a second working position in which the fixed tooth block is rotated away from the slewing bearing outer gear ring and locked by the second locking mechanism.
Optionally, a fourth connection lug is arranged on the rotary platform, the fixed tooth block is hinged with the fourth connection lug through a first rotary shaft, and the first rotary shaft is arranged along the horizontal direction.
Optionally, the fixed tooth piece is plate form and one side is formed with the meshing rack to both ends are formed with convex first connection ear seat and second connection ear seat respectively about the fixed tooth piece, first connection ear seat with the second connection ear seat passes through first rotation axis respectively with the fourth connection ear seat articulates.
Optionally, the fourth connecting ear seat is the setting in pairs, and every pair fourth connecting ear seat is located respectively first connecting ear seat with the both sides of second connecting ear seat, first rotation axis is two and coaxial setting, first rotation axis passes respectively in pairs fourth connecting ear seat and be located between this pair of fourth connecting ear seat first connecting ear seat or second connecting ear seat to first rotation axis is connected with the fixed plate in the outside, the fixed plate pass through first fastener with fourth connecting ear seat fixed connection.
Optionally, in the first working position, a gap is formed between the fixed tooth block and the rotating platform, the first locking mechanism comprises a rotating handle, the rotating handle is embedded in the gap to brake the fixed tooth block, and in the second working position, the rotating handle rotates out of the gap to enable the fixed tooth block to rotate away from the slewing bearing outer gear ring.
Optionally, a third connection lug is formed on the fixed tooth block, the rotating handle is rotatably installed on the third connection lug through a second rotating shaft, and the axis of the second rotating shaft is perpendicular to the rotating axis of the fixed tooth block relative to the rotating platform.
Optionally, the rotating handle comprises a locking section and an operating section, the operating section being bent outwards from the locking section, the locking section being snapped into the gap in the first working position.
Optionally, the second locking mechanism includes a positioning piece, the positioning piece is disposed on the fixed tooth block, the rotating platform is provided with a large arm cylinder mounting seat, the large arm cylinder mounting seat is provided with a positioning hole, and the positioning piece is inserted into the positioning hole in the second working position.
Optionally, the fixed tooth block is formed with a first connection lug hinged with the rotary platform, the first connection lug is formed into an L-shaped structure, a first end of the L-shaped structure is connected with the fixed tooth block, a first hinge hole hinged with the rotary platform is formed at an inflection point, a mounting hole is formed on a second end opposite to the first end, and the positioning piece is a positioning pin mounted in the mounting hole.
According to a second aspect of the present disclosure, there is provided a drilling machine comprising a rotary platform and a slewing bearing outer ring gear, and further comprising a positioning device as described above.
Through the technical scheme, the positioning device of the drilling machine rotating platform is a first working position when the drilling machine drills, and the first locking mechanism controls the rotating platform to rotate so as to prevent the drilling machine from rotating left and right and possibly shaking; when the drilling machine rotates, the second working position is the second locking mechanism, the positioning device is far away from the rotating platform and fixed, and the drilling machine can rotate.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the disclosure, and are incorporated in and constitute a part of this specification, illustrate the disclosure and together with the description serve to explain, but do not limit the disclosure. In the drawings:
FIG. 1 is a schematic view of a positioning device of a drilling rig rotary platform provided by an exemplary embodiment of the present disclosure;
FIG. 2 is a schematic view of the structure of the fixed tooth block shown in FIG. 1;
FIG. 3 is a schematic illustration of a positioning device of a rotary platform of a drilling rig in a first operational position provided by an exemplary embodiment of the present disclosure;
fig. 4 is a schematic view of a positioning device of a rotary platform of a drilling machine in a second working position according to an exemplary embodiment of the present disclosure.
Description of the reference numerals
1-fixed tooth block, 11-meshing rack, 12-first connecting lug seat, 13-second connecting lug seat, 14-third connecting lug seat, 15-first hinge hole, 16-second hinge hole, 17-mounting hole, 18-third hinge hole, 2-rotating handle, 21-locking section, 22-operating section, 3-positioning piece, 31-washer, 32-first cotter pin, 4-fastening nut, 5-fourth connecting lug seat, 6-first rotation axis, 61-fixed plate 7-first fastener, 8-second rotation axis, 81-slotted nut, 82-second cotter pin, 83-third cotter pin, 20-slewing bearing outer gear ring, 30-big arm cylinder mount pad, 40-motor mount pad.
Detailed Description
Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the disclosure, are not intended to limit the disclosure.
In the present disclosure, unless otherwise indicated, terms of orientation such as "up, down, left, right" are defined based on the orientation of the positioning device in the first operating position, and specifically reference may be made to the directions of the planes shown in fig. 1 to 3, with the side of the meshing rack being "rear" and the opposite side being "front", while "inner, outer" refers to the inner and outer sides of the respective component profiles. Furthermore, the terms "first," "second," and the like, as used in this disclosure, are used for distinguishing one element from another and not necessarily for describing a sequential or chronological order. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated.
As shown in fig. 3 and 4, the present disclosure provides a positioning device of a rotary platform of a drilling machine, which includes a fixed tooth block 1, a first locking mechanism and a second locking mechanism, the fixed tooth block 1 being rotatably mounted on the rotary platform to have a first operating position in which the fixed tooth block 1 is engaged with and locked by a first locking mechanism with a slewing bearing outer ring gear 20 below the rotary platform, and a second operating position in which the fixed tooth block 1 is rotated away from the slewing bearing outer ring gear 20 and locked by the second locking mechanism.
The upper power unit of the drilling machine is a working device and comprises a rotary platform, a drilling tool capable of drilling is arranged on the rotary platform, a slewing bearing gear ring is arranged between the rotary platform and the chassis, and the slewing bearing gear ring is connected with the upper rotary platform and drives the rotary platform to synchronously rotate through a hydraulic motor. When drilling, the hydraulic motor drives the slewing bearing gear ring to rotate the rotary platform to the position where drilling is needed, after positioning is completed, the slewing bearing gear ring is fixed, namely the rotary platform is controlled to be fixed, and then the drilling tool performs drilling operation. Thus, when the drilling machine performs drilling operation, the positioning device provided by the disclosure is at the first working position, the fixed tooth block 1 rotates to a position meshed with the slewing bearing outer gear ring 20 below the rotating platform, and the first locking mechanism limits the fixed tooth block 1 to be in a meshed state through the corresponding locking device, namely, the rotating platform is controlled to rotate by controlling the movement of the fixed tooth block 1, so that the drilling machine is prevented from rotating left and right and possibly shaking in the operation; when the drilling machine rotates, the positioning device is positioned at a second working position, the fixed tooth block 1 rotates to a position far away from the rotary platform, namely, the fixed tooth block 1 is disengaged from the outer gear ring 20 of the slewing bearing, the fixed tooth block 1 is fixed in the second locking mechanism through the corresponding locking device, and the outer gear ring 20 of the slewing bearing can drive the rotary platform to control the drilling machine to rotate.
Specifically, as shown in fig. 1, a fourth connection lug 5 is provided on the rotary platform, the fixed tooth block 1 is hinged with the fourth connection lug 5 through a first rotary shaft 6, and the first rotary shaft 6 is provided along the horizontal direction. In the present embodiment, the rotary platform includes the motor mounting plate 40, and the motor mounting plate 40 is disposed at the upper end of the slewing bearing outer ring gear 20, and the end of the fourth connecting lug 5 is welded to the upper end surface of the motor mounting plate 40, so that the positioning device is fixedly mounted on the rotary platform, and the fixed tooth block 1 is guaranteed to be engaged with the slewing bearing outer ring gear 20 in a position corresponding to the right position.
More specifically, the fixed tooth block 1 is plate-shaped and one side is formed with an engagement rack 11, as shown in fig. 1 and 2, the engagement rack 11 is located on the rear end face of the fixed tooth block 1, the respective teeth are arranged in the horizontal direction to engage with the slewing bearing outer ring gear 20, and further, both left and right ends of the fixed tooth block 1 are respectively formed with a first connection lug 12 and a second connection lug 13 protruding, the first connection lug 12 and the second connection lug 13 being respectively hinged with the fourth connection lug 5 through the first rotation shaft 6. In this embodiment, the first connection lug 12 and the second connection lug 13 are located at the upper left end and the upper right end of the fixed tooth block 1 respectively and are both protruded forward, the top ends of the first connection lug 12 and the second connection lug 13 are on the same horizontal line, the rear end faces of the first connection lug 12 and the second connection lug 13 are also in the same plane with the rear end face of the fixed tooth block 1, and a certain gap is reserved between the connection lug and the front end face of the motor mounting plate 40, so that the fixed tooth block 1 cannot interfere with the motor mounting plate 40 in the rotation process. Similarly, in order to prevent the interference between the fixed tooth block 1 and the fourth connection lug 5, the upper end surface of the fixed tooth block 1 is formed into a convex structure, that is, the inner sides of the first connection lug 12 and the second connection lug 13 are respectively provided with a groove extending downwards. In addition, the plate height between the engagement rack 11 and the end of the fourth connecting lug 5 should be greater than the thickness of the motor mounting plate 40 so that in the first operating position the engagement rack 11 engages exactly on the slewing bearing outer ring gear 20.
As shown in fig. 1, in order to firmly mount the positioning device on the motor mounting plate 40, the fourth connecting lugs 5 are arranged in pairs, and each pair of fourth connecting lugs 5 is respectively located at two sides of the first connecting lug 12 and the second connecting lug 13, and similarly, the first rotating shaft 6 is arranged in two and coaxial manner in match with the first connecting lug 12 and the second connecting lug 13. In addition, the first connection lug 12 is formed with a first hinge hole 15, the second connection lug 13 is formed with a second hinge hole 16, the fourth connection lug 5 is also formed with a corresponding hinge hole, the first rotation shaft 6 passes through the pair of fourth connection lugs 5 and the first connection lug 12 or the second connection lug 13 between the pair of fourth connection lugs 5, respectively, and the first rotation shaft 6 is connected with a fixing plate 61 on the outside, the fixing plate 61 is fixedly connected with the fourth connection lug 5 through the first fastener 7, so that the first fastener 7 fixes the first rotation shaft 6 and the fourth connection lug 5 together, preventing axial movement of the first rotation shaft 6. The first rotation shaft 6 and the fixing plate 61 may be integrally formed, or may be fastened, and the specific connection form is not limited in this disclosure. In the present embodiment, the first rotation shaft 6 is a pin shaft having a cam-shaped baffle at one end, and the first fastening member 7 is a bolt.
According to the specific embodiment provided by the disclosure, as shown in fig. 3 and 4, in the first working position, a gap is formed between the fixed tooth block 1 and the rotating platform, specifically, the upper end surface of the motor mounting plate 40 is further provided with a large arm cylinder mounting seat 30, and the large arm cylinder mounting seat 30 is located between two pairs of fourth connecting lugs 5, the gap is a gap between the bottom surface of the large arm cylinder mounting seat 30 and the upper end surface of the fixed tooth block 1, the first locking mechanism comprises a rotating handle 2, the rotating handle 2 is embedded in the gap to abut against the lower end surface of the large arm cylinder mounting seat 30, so that the fixed tooth block 1 is braked to rotate around the first rotating shaft 6, and in the second working position, the rotating handle 2 rotates out of the gap to enable the fixed tooth block 1 to rotate away from the slewing bearing outer gear ring 20.
Further, as shown in fig. 1 and 2, a third connection lug 14 is formed on the fixed tooth block 1, the third connection lug 14 protrudes to the right from the front end face of the fixed tooth block 1, the upper end face of the third connection lug 14 and the bottom face of the groove are the same plane, a third hinge hole 18 through which the second rotation shaft 8 passes is formed, and the rotation handle 2 is rotatably mounted on the third connection lug 14 through the second rotation shaft 8. In the present embodiment, the second rotation shaft 8 has a stepped shaft which abuts between the upper end face of the third connection lug 14 and the lower end face of the rotation handle 2, and one end of the second rotation shaft 8 has a threaded section, and when mounted, the slotted nut 81 and the threaded section fix the first rotation shaft 8 to the third connection lug 14 by threaded connection, and in order to prevent the connection from loosening, the outer end of the slotted nut 81 is further provided with a third cotter pin 83, the third cotter pin 83 is locked in the notch of the slotted nut 81 through the threaded section, and the other end of the second rotation shaft 8 is further provided with a second cotter pin 82 to fix the rotation handle 2 to the third connection lug 14 from coming off from the end of the second rotation shaft 8. In addition, the axis of the second rotating shaft 8 is mutually perpendicular to the rotating axis of the fixed tooth block 1 relative to the rotating platform, so that the maximum jacking force of the fixed tooth block 1 is given to the first working position, and the drilling operation of the drilling machine is guaranteed.
Still further, the rotary handle 2 includes the locking section 21 and the operation section 22, one end of the locking section 21 is mounted on the second rotary shaft 8, the other end is mounted with the operation section 22, the operation section 22 is formed into a cylinder shape, and is bent outwards from the locking section 21, so that the locking section 21 is formed into a block shape with a bending, so that the contact area between the locking section 21 and the large arm cylinder mounting seat 30 can be increased, the reaction force from the slewing bearing outer gear ring 20 received by the fixed tooth block 1 can be transmitted to the large arm cylinder mounting seat 30 to the greatest extent through the locking section 21, instead of being concentrated on the second rotary shaft 8 and the third connecting lug 14, and the service life of the positioning device is prolonged. In the first working position, the locking section 21 is plugged into a gap formed by the rotary platform and the fixed tooth block 1, the upper end face of the locking section abuts against the lower bottom surface of the large arm cylinder mounting seat 30, a certain gap is reserved between the upper end face of the locking section 21 and the lower end face of the large arm cylinder mounting seat 30 after the locking section 21 is screwed into the gap, so that the rotary handle 2 can conveniently rotate, but the gap cannot be too large, and the fixed tooth block 1 still has a space for rotating away from the rotary platform after receiving a reaction force, so that the fixed tooth block can be meshed with the slewing bearing outer gear ring 20 to loose, and the purpose of fixing the rotary platform cannot be achieved. The operating section 22 may be welded to the end of the locking section 21, or may be screwed to the locking section 21.
According to the specific embodiment provided by the disclosure, as shown in fig. 4, the second locking mechanism includes a positioning member 3, the positioning member 3 is disposed on the fixed tooth block 1, a positioning hole is disposed on the large arm cylinder mounting seat 30 of the rotating platform, in the second working position, the rotating handle 2 rotates out of the gap, and the fixed tooth block 1 rotates around the first rotating shaft 6 away from the rotating platform and is fixed by inserting the positioning member 3 into the positioning hole.
Specifically, as shown in fig. 1 and 2, the first connection lug 12 formed on the fixed tooth block 1 to be hinged to the rotary table has an L-shaped structure in practice, a first end of the L-shaped structure is connected to the fixed tooth block 1, and a first hinge hole 15 to be hinged to the rotary table is formed at an inflection point, a mounting hole 17 is also formed on a second end opposite to the first end, an axis of the mounting hole 17 is parallel to an axis of the first hinge hole 15, and the positioning member 3 is a positioning pin mounted in the mounting hole 17. In addition, in order to prevent the positioning member 3 from being lost and dropped in the non-second working position, a washer 31 is provided inside the mounting hole 17, and a first cotter pin 31 is provided outside the washer 31, and the first cotter pin 31 passes through the positioning member 3 to fix it on the first connecting ear seat 12. In this embodiment, the positioning member 3 may also be an eye bolt, the positioning hole is a fastening nut 4 welded on the side wall of the boom cylinder mounting seat 30, and of course, the positioning hole may also be a threaded hole formed on the side wall of the boom cylinder mounting seat 30, and the eye bolt and the fastening nut 4 fix the fixed tooth block 1 through threaded connection.
The present disclosure also provides a drilling rig comprising a rotary platform and a slewing bearing outer ring gear 20, and further comprising a positioning device of the drilling rig rotary platform described above. The drilling machine has all the beneficial effects of the positioning device, and the description is omitted here.
The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the present disclosure is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solutions of the present disclosure within the scope of the technical concept of the present disclosure, and all the simple modifications belong to the protection scope of the present disclosure.
In addition, the specific features described in the foregoing embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, the present disclosure does not further describe various possible combinations.
Moreover, any combination between the various embodiments of the present disclosure is possible as long as it does not depart from the spirit of the present disclosure, which should also be construed as the disclosure of the present disclosure.