Mast turntable structure special for rotary drilling rig

Abstract

The utility model relates to the technical field of rotary drilling rigs, in particular to a mast turntable structure special for a rotary drilling rig, which comprises a mast body and a turntable body, the front end of the mast body is detachably connected with an embracing lug and a side embracing lug through bolts, and the inner side walls of the embracing lug and the side embracing lug are detachably connected with first sliding plates through bolts; the front end of the mast body is detachably connected with a plurality of second sliding plates distributed opposite to the first sliding plates through bolts, two limiting holes are formed in the front end of the mast body in a penetrating mode, and when the mast body deflects leftwards and rightwards, the side edges of the rotary table body are limited by the holding lugs, the side holding lugs, the first sliding plates and the second sliding plates and are limited by the limiting holes and limiting shafts; the rotary table body can only rotate by a certain angle left and right at the front end of the mast body, and the purposes of limiting the rotary table body, reducing abrasion of the rotary table body and prolonging the service life of the rotary table body are achieved through cooperation of the first sliding plate and the second sliding plate.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary drilling rigs, in particular to a mast turntable structure dedicated to rotary drilling rigs. Background Art

[0002] The rotary drilling rig is a basic construction equipment for drilling deep holes, which is widely used in pile foundation construction fields such as house construction, tunnel construction, bridge construction, etc. The turntable of the rotary drilling rig is one of its key components. It is closely combined with the mast body and connected through a rotating shaft perpendicular to the turntable body, so that the mast body can swing and rotate around the rotating shaft.

[0003] In an existing mast turntable structure for rotary drilling rigs, the turntable body and the mast body are rotatably connected via a bearing, and the entire plane of the turntable body is in contact with the mast. When the mast body is subjected to force, friction is directly generated with the turntable body, resulting in greater wear of the turntable body and reducing the service life of the turntable body.

[0004] In addition, the existing turntable body and the mast body are limited only by the holding ears and the side holding ears. The limiting structure is relatively simple and the limiting effect is not good enough. Therefore, it is necessary to propose a mast turntable structure dedicated to rotary drilling rigs to solve the above-mentioned problems. Utility Model Content

[0005] The utility model aims to provide a mast turntable structure dedicated to a rotary drilling rig, which can limit the turntable body by the cooperation of a first slide plate and a second slide plate, while reducing the wear of the turntable body, thereby extending the service life of the turntable body. At the same time, the limit shaft and the limit hole are used to limit the turntable, thereby increasing the stability of the turntable and achieving a good limiting effect.

[0006] The utility model aims to provide a mast turntable structure dedicated to a rotary drilling rig, comprising a mast body and a turntable body, wherein the front end of the mast body is detachably connected with a holding lug and two symmetrically distributed side holding lugs by bolts, the inner side walls of the holding lug and the side holding lugs are detachably connected with a first slide plate by bolts, and the front end of the mast body is detachably connected with a plurality of second slide plates distributed opposite to the first slide plates by bolts;

[0007] The front end of the mast body is penetrated by two limiting holes, and the rear end surface of the turntable body is fixedly connected with two limiting shafts inserted in the limiting holes;

[0008] The upper end and the left and right sides of the turntable body are respectively clamped between the first slide plate and the second slide plate inside the holding ear and the side holding ear.

[0009] In order to initially bear and disperse the force transmitted by the mast body and reduce damage to the turntable body, a mast turntable structure dedicated to a rotary drilling rig is preferably selected in the utility model. A pin shaft is installed at the rear end of the turntable body, a sleeve is opened at the front end of the mast body, a spherical bearing is installed on the inner wall of the sleeve, and the spherical bearing is fixedly connected to the pin shaft.

[0010] In order to allow the limiting shaft to slide in an arc shape inside the limiting hole, as a preferred embodiment of the utility model, a mast turntable structure dedicated to a rotary drilling rig is configured such that the two limiting holes are arranged in an arc shape.

[0011] In order to store the lubricating grease in the groove conveniently, as a preferred mast turntable structure for rotary drilling rigs of the utility model, grooves are provided on the side opposite to the first slide plate and the second slide plate.

[0012] In order to increase the stability of the limiting shaft sliding inside the two limiting holes, as a preferred mast turntable structure for a rotary drilling rig of the utility model, the width dimensions of the two limiting holes are respectively the same as the diameter of the limiting shaft.

[0013] In order to facilitate the limiting of the limiting shaft, as a preferred mast turntable structure dedicated to a rotary drilling rig of the utility model, the rear ends of the two limiting shafts pass through the limiting holes and are threadedly connected with limiting blocks abutting against the inside of the mast body.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] The utility model, through the cooperation of the first slide plate and the second slide plate, when the turntable body is subjected to force, it will first directly contact with the first slide plate and the second slide plate and slide between the first slide plate and the second slide plate, thereby reducing the wear of the turntable body and extending the service life of the turntable body;

[0016] When the mast body deflects left and right, the side of the turntable body is restricted by the clasping ears, the side clasping ears, the first slide plate and the second slide plate, and is also restricted by the limiting hole and the limiting axis, so that the turntable body can only rotate left and right at a certain angle at the front end of the mast body;

[0017] To sum up, the cooperation between the first slide plate and the second slide plate can be used to limit the turntable body while reducing the wear of the turntable body, thereby extending the service life of the turntable body. At the same time, the limiting shaft and the limiting hole are used to limit the position, which increases the stability of the turntable body and achieves a good limiting effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is the overall structure diagram of the utility model;

[0019] Figure 2 It is a schematic structural diagram of the working of the utility model;

[0020] Figure 3 This is a structural diagram of the ear holding device of the present utility model.

[0021] In the figure: 1, second slide plate; 2, pin shaft; 3, turntable body; 4, first slide plate; 5, limit shaft; 6, holding ear; 7, joint bearing; 8, limit hole; 9, mast body; 10, sleeve; 11, side holding ear; 12, groove; 13, limit block. DETAILED DESCRIPTION

[0022] See also Figures 1 to 3 A mast turntable structure for a rotary drilling rig includes a mast body 9 and a turntable body 3. The front end of the mast body 9 is detachably connected with a lug 6 and two symmetrically distributed side lugs 11 by bolts. The inner side walls of the lug 6 and the side lugs 11 are detachably connected with a first slide plate 4 by bolts. The front end of the mast body 9 is detachably connected with a plurality of second slide plates 1 distributed opposite to the first slide plates 4 by bolts.

[0023] The front end of the mast body 9 is penetrated by two limiting holes 8, and the rear end surface of the turntable body 3 is fixedly connected with two limiting shafts 5 inserted in the limiting holes 8;

[0024] The upper end and the left and right sides of the turntable body 3 are respectively clamped between the first slide plate 4 and the second slide plate 1 inside the holding ears 6 and the side holding ears 11.

[0025] In this embodiment, the turntable body 3 is clamped between the first slide plate 4 and the second slide plate 1 inside the holding ears 6 and the side holding ears 11. When the turntable body 3 is subjected to force, it will first directly contact with the first slide plate 4 and the second slide plate 1 and slide between the first slide plate 4 and the second slide plate 1, thereby reducing the wear of the turntable body 3 and extending the service life of the turntable body 3.

[0026] When the mast body 9 deflects left or right, the side of the turntable body 3 is restricted by the clasping ears 6, the side clasping ears 11, the first slide plate 4 and the second slide plate 1, and is also restricted by the limiting hole 8 and the limiting axis 5, so that the turntable body 3 can only rotate left or right at a certain angle at the front end of the mast body 9.

[0027] As a technical optimization solution of the utility model, a pin shaft 2 is installed at the rear end of the turntable body 3, a sleeve 10 is opened at the front end of the mast body 9, a spherical bearing 7 is installed on the inner wall of the sleeve 10, and the spherical bearing 7 is fixedly connected to the pin shaft 2.

[0028] In this embodiment, by using the spherical bearing 7 , the force transmitted by the mast body 9 can be preliminarily borne and dispersed, thereby reducing damage to the turntable body 3 .

[0029] As a technical optimization solution of the present utility model, the two limiting holes 8 are arranged in an arc shape.

[0030] In this embodiment, the two limiting holes 8 are arranged in an arc shape, so that the limiting shaft 5 can slide in an arc inside the limiting holes 8 while the turntable body 3 rotates.

[0031] As a technical optimization solution of the present invention, a groove 12 is provided on one side of the first slide plate 4 opposite to the second slide plate 1 .

[0032] In this embodiment: a groove 12 is opened on the side opposite to the first slide plate 4 and the second slide plate 1, so that lubricating grease can be conveniently stored inside the groove 12, which has a certain lubricating effect on the turntable body 3 and further reduces the wear of the turntable body 3.

[0033] As a technical optimization solution of the present invention, the widths of the two limiting holes 8 are respectively the same as the diameters of the limiting shafts 5 .

[0034] In this embodiment: by making the width dimensions of the two limiting holes 8 respectively the same as the diameter of the limiting shaft 5, the stability of the limiting shaft 5 sliding inside the two limiting holes 8 can be increased.

[0035] As a technical optimization solution of the utility model, the rear ends of the two limiting shafts 5 pass through the limiting holes 8 and are threadedly connected with limiting blocks 13 that abut against the inside of the mast body 9 .

[0036] In this embodiment, the limiting block 13 can be used to conveniently limit the limiting shaft 5 to prevent the limiting shaft 5 from being separated from the limiting hole 8 .

[0037] Working principle: The turntable body 3 is clamped between the first slide plate 4 and the second slide plate 1 inside the holding ears 6 and the side holding ears 11. When the turntable body 3 is subjected to force, it will first directly contact with the first slide plate 4 and the second slide plate 1 and slide between the first slide plate 4 and the second slide plate 1, thereby reducing the wear of the turntable body 3 and extending the service life of the turntable body 3.

[0038] During operation, when the mast body 9 is inverted, the force on the turntable body 3 is concentrated on the pin 2, the spherical bearing 7 and the side ears 11 of the mast body 9;

[0039] When the mast body 9 is vertical, the force on the turntable body 3 is concentrated on the pin 2;

[0040] When the mast body 9 deflects left or right, the side of the turntable body 3 is restricted by the clasping ears 6, the side clasping ears 11, the first slide plate 4 and the second slide plate 1, and is also restricted by the limiting hole 8 and the limiting axis 5, so that the turntable body 3 can only rotate left or right at a certain angle at the front end of the mast body 9.

[0041] The above are only preferred embodiments of the present invention and are 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 in the protection scope of the present invention.

Claims

1. A mast turntable structure for a rotary drilling rig, comprising a mast body (9) and a turntable body (3), characterized in that: The front end of the mast body (9) is detachably connected to a gripping lug (6) and two symmetrically distributed side gripping lugs (11) by means of bolts, the inner side walls of the gripping lug (6) and the side gripping lugs (11) are detachably connected to a first slide plate (4) by means of bolts, and the front end of the mast body (9) is detachably connected to a plurality of second slide plates (1) distributed opposite to the first slide plates (4) by means of bolts; The front end of the mast body (9) is penetrated by two limiting holes (8), and the rear end surface of the turntable body (3) is fixedly connected with two limiting shafts (5) inserted into the limiting holes (8); The upper end and the left and right sides of the turntable body (3) are respectively clamped between the first slide plate (4) and the second slide plate (1) inside the holding ears (6) and the side holding ears (11).

2. The mast turntable structure for rotary drilling rig according to claim 1, characterized in that: A pin shaft (2) is installed at the rear end of the turntable body (3), a sleeve (10) is provided at the front end of the mast body (9), a spherical bearing (7) is installed on the inner wall of the sleeve (10), and the spherical bearing (7) is fixedly connected to the pin shaft (2).

3. The mast turntable structure for rotary drilling rig according to claim 1, characterized in that: The two limiting holes (8) are arranged in an arc shape.

4. The mast turntable structure for rotary drilling rig according to claim 1, characterized in that: A groove (12) is provided on one side of the first slide plate (4) opposite to the second slide plate (1).

5. The mast turntable structure for rotary drilling rig according to claim 1, characterized in that: The width dimensions of the two limiting holes (8) are respectively the same as the diameter of the limiting shaft (5).

6. The mast turntable structure for rotary drilling rig according to claim 1, characterized in that: The rear ends of the two limiting shafts (5) pass through the limiting holes (8) and are threadedly connected with limiting blocks (13) that abut against the inside of the mast body (9).

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