CN110745726A - Pulley device, pulley assembly and rotary drilling rig - Google Patents

Abstract

The invention provides a pulley device, a pulley assembly and a rotary drilling rig, relates to the technical field of rotary drilling rigs, and aims to solve the technical problem that the rotary drilling rig only provides one drilling center distance in the prior art. The pulley device comprises a frame body and a moving part arranged on the frame body, wherein the moving part is used for pivotally connecting a driven pulley in a pulley block, and the relative position between the moving part and the frame body is adjustable in the horizontal direction, so that the distance between a main pulley and the driven pulley in the pulley block is adjustable in the horizontal direction. The pulley assembly comprises a main pulley, a secondary pulley, a steel wire rope connecting the main pulley and the secondary pulley and a pulley device. The rotary drilling rig comprises a pulley assembly.

Description

Pulley device, pulley assembly and rotary drilling rig

Technical Field

The invention relates to the technical field of rotary drilling rigs, in particular to a pulley device, a pulley assembly and a rotary drilling rig.

Background

The rotary drilling rig is a construction machine suitable for hole forming operation of building foundation engineering, and is generally provided with auxiliary hoisting equipment of the rotary drilling rig. The auxiliary hoisting equipment of the rotary drilling rig is mainly used for enabling the auxiliary hoisting steel wire rope to complete corresponding hoisting operation through the pulley block at the top of the mast.

At present, a rotary drilling rig in some technologies only provides a drilling center distance (the drilling center distance refers to the horizontal distance between a drill rod and a rack), can basically meet a rotary drilling function under the maximum drilling diameter, and is poor in expansibility. Specifically, a user may encounter various construction methods in the construction process, for example: when the soil layer is subjected to rotary drilling operation, a user usually hopes that the drilling center distance can be increased to realize large-aperture drilling operation so as to improve the construction efficiency.

In order to solve the problems, some technologies often adopt a mode of re-purchasing a main engine or purchasing a plurality of drill masts to meet the use requirements, which undoubtedly greatly increases the construction cost.

Disclosure of Invention

The invention aims to provide a pulley device, a pulley assembly and a rotary drilling rig, and aims to solve the technical problem that the rotary drilling rig only provides one drilling center distance in the prior art.

In a first aspect, an embodiment provides a pulley device for mounting a pulley block, including: the movable part is used for being pivoted with a driven pulley in the pulley block, and the relative position between the movable part and the support body is adjustable in the horizontal direction, so that the distance between a main pulley in the pulley block and the driven pulley is adjustable in the horizontal direction.

In an optional implementation manner, a first hole is formed in the frame body, a second hole for penetrating through the driven shaft of the driven pulley is formed in the movable member, and the second hole can be communicated with the first hole at multiple positions of the frame body.

In an optional embodiment, the number of the first holes is two, and the first holes are circular holes, the two first holes are arranged at intervals, the distance between the circle centers of the two first holes in the horizontal direction is greater than zero, and the second hole can be communicated with any one of the two first holes.

Or the first hole is a kidney-shaped hole, and the second hole can be communicated with the kidney-shaped hole at a plurality of positions.

In an optional embodiment, the rack further comprises a fixing member, the fixing member is fixedly connected to the rack body, and two third holes are formed in the fixing member and spaced from each other.

The movable piece is detachably connected with the fixed piece, so that the second hole can be communicated with the first hole and any corresponding third hole.

In an alternative embodiment, the cover plate is detachably connected with the fixed part, the cover plate covers one of the third hole positions of the fixed part, and the movable part is connected to the other third hole position of the fixed part.

In an alternative embodiment, the frame body comprises a first side plate and a second side plate which are connected and arranged in parallel, and a gap for accommodating the slave pulley is reserved between the first side plate and the second side plate.

The movable piece is at least two, first curb plate with the second curb plate all connects at least one the movable piece, just on the first curb plate the movable piece with on the second curb plate the movable piece just sets up.

In an alternative embodiment, the pulley further comprises a limiting element, the limiting element is detachably connected to the movable element, and the limiting element is used for fixing the driven shaft on the driven pulley relative to the movable element.

In an alternative embodiment, the number of the limiting members is two, and the limiting members are respectively a first limiting member and a second limiting member, and an accommodating space is formed between the first limiting member and the second limiting member, so that the driven shaft on the driven pulley is limited in the accommodating space.

In a second aspect, embodiments provide a pulley assembly comprising: a main sheave, a secondary sheave, a wire rope connecting the main sheave and the secondary sheave, and the sheave apparatus of any of the preceding embodiments; the main pulley is pivoted on the frame body, and the auxiliary pulley is pivoted on the movable piece.

In a third aspect, an embodiment provides a rotary drilling rig, including: the pulley assembly of the previous embodiment.

The pulley device, the pulley assembly and the rotary drilling rig provided by the invention have the beneficial effects that:

when the installation, the pivot of head pulley is on the support body, follows the pulley pivot on the moving part to make head pulley and follow the pulley homoenergetic rotate relative to the support body, in order to satisfy follow-up hoist and mount operation demand.

In the pulley device, the driven pulley is pivoted on the movable piece, the relative position of the movable piece and the frame body is adjustable in the horizontal direction, and the arrangement can change the relative position of the driven pulley and the frame body in the horizontal direction, so that the distance between the main pulley and the driven pulley can be adjusted in the horizontal direction; because the distance between the main pulley and the auxiliary pulley is adjustable in the horizontal direction, in the actual construction process, when the drilling diameter needs to be enlarged (or a plurality of construction methods are expanded), the distance between the main pulley and the auxiliary pulley can be changed by changing the relative position of the movable part and the frame body, and the distance between the main pulley and the auxiliary pulley is increased, so that the purpose of enlarging the drilling center distance is achieved.

Compared with the prior art, a user does not need to buy a main machine or a plurality of drill masts again, and construction cost can be saved more.

It should be noted that, in general, the pulley block includes a main pulley and a sub-pulley.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a portion of a pulley assembly according to an embodiment of the present invention;

FIG. 2 is a schematic view of a partial structure of a frame body;

FIG. 3 is a schematic view of a portion of the frame body and the fixing member;

fig. 4 is a schematic structural view of the fixing member.

Icon:

100-frame body; 110-a first side panel; 120-a second side panel; 130-a first aperture;

200-a movable member; 210-a second aperture;

300-a slave pulley; 400-a fixture; 410-a third aperture; 500-cover plate; 600-a stop.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are conventionally placed in use, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Some embodiments of the invention are described in detail below with reference to the accompanying drawings. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

The present embodiment provides a pulley apparatus for mounting a pulley block, as shown in fig. 1, the pulley apparatus includes a frame body 100 and a movable member 200 disposed on the frame body 100, the movable member 200 is used for pivotally connecting a secondary pulley 300 in the pulley block, and a relative position between the movable member 200 and the frame body 100 is adjustable in a horizontal direction, so that a distance between the primary pulley (not shown in the drawing) and the secondary pulley 300 in the pulley block is adjustable in the horizontal direction.

In the pulley device, the driven pulley 300 is pivoted on the movable element 200, the relative position of the movable element 200 and the frame body 100 is adjustable in the horizontal direction, the relative position of the driven pulley 300 and the frame body 100 can be changed in the horizontal direction, and the distance between the main pulley and the driven pulley 300 can be adjusted in the horizontal direction; because the distance between the main pulley and the secondary pulley 300 is adjustable in the horizontal direction, in the actual construction process, when the drilling diameter needs to be enlarged (or a plurality of construction methods need to be expanded), the distance between the main pulley and the secondary pulley 300 can be changed by changing the relative position of the movable element 200 and the frame body 100, and the distance between the main pulley and the secondary pulley is increased, so that the purpose of enlarging the drilling center distance is achieved.

As can be seen from the foregoing, the pulley device in this embodiment can provide a plurality of different installation positions for the slave pulley 300, and the installation position of the slave pulley 300 can be changed by the difference of the installation position of the movable member 200, and finally, a plurality of drilling center distances can be adjusted.

In addition, compared with the technology in which two first holes 130 are directly formed in the frame body 100, the pulley device in this embodiment has the advantages that the installation position of the secondary pulley 300 is more flexible due to the additional arrangement of the movable element 200, and the pulley device is not limited to the positions of the two first holes 130 formed in the frame body 100, as long as the movable element 200 and the frame body 100 can be detachably installed; in addition, in some structural forms, there may be no need to open the first hole 130 for penetrating the shaft on the frame body 100, for example: the movable member 200 is mounted on one side of the frame body 100, and a second hole 210 (not shown) for fixing the driven shaft is formed in the movable member 200.

In one form of construction, the moveable member 200 is removably connected to the frame 100 (the form of construction shown in the drawings); in another structure, the movable member 200 can slide relative to the frame 100, and when the movable member 200 slides to a certain position of the frame 100, the movable member can be fixed at the position (not shown in the figures).

It should be noted that, in order to ensure that the movable element 200 is detachably connected to the frame body 100 and the relative position between the movable element 200 and the frame body 100 is adjustable in the horizontal direction, in one implementation, a plurality of mounting holes may be formed in the frame body 100.

Specifically, the frame body 100 is connected to the movable member 200 by a screw connection (not shown). Wherein, all be equipped with a plurality of mounting holes on support body 100 and the moving part 200, correspondingly, wear to be equipped with screw or bolt between the mounting hole to realize the fixed connection of both at a plurality of positions.

In this embodiment, the primary pulley is sleeved on the primary shaft and can rotate around the primary shaft, and correspondingly, the secondary pulley 300 is sleeved on the secondary shaft and the secondary pulley 300 can rotate around the secondary shaft; in particular, the main shaft is fixedly mounted to the frame 100 and the sub-shaft is fixedly mounted to the movable member 200.

In one embodiment, referring to fig. 1 and 2, the frame body 100 is provided with a first hole 130, the movable member 200 is provided with a second hole 210 for passing the driven shaft of the driven pulley 300, and the second hole 210 can communicate with the first hole 130 at a plurality of positions of the frame body 100.

In a specific installation, one embodiment is: the movable member 200 is located inside the frame body 100, wherein one end or both ends of the driven shaft can sequentially pass through the second hole 210 and the first hole 130, and the driven pulley 300 is pivotally connected to the frame body 100 or the movable member 200 by relatively fixing the driven shaft to the movable member 200.

The other implementation mode is as follows: the movable member 200 is located at the outer side of the frame body 100, wherein one end or both ends of the driven shaft can sequentially pass through the first hole 130 and the second hole 210, and the driven pulley 300 is pivoted with the frame body 100 or the movable member 200 by relatively fixing the driven shaft and the movable member 200, so that the installation of the driven pulley 300 and the movable member 200 is more convenient for the movable member 200 located at the inner side of the frame body 100.

In this embodiment, the first hole 130 may have various structures.

For example: as shown in fig. 2, the first hole 130 is an oblong hole or a kidney-shaped hole, and correspondingly, the second hole 210 is a circular hole, and the inner diameter of the circular hole is slightly larger than the outer diameter of the driven shaft, so as to ensure that the driven shaft can penetrate into the second hole 210 without shaking to a large extent.

When the first hole 130 is an elongated hole or a waist-shaped hole, the elongated direction of the elongated hole or the waist-shaped hole may extend substantially in the horizontal direction, and the second hole 210 may be communicated with the first hole 130 at a plurality of positions of the frame body 100 by changing the relative position of the movable member 200 and the first hole 130, so as to adjust the distance between the primary pulley and the secondary pulley 300, and further, adjust the center distance of the drilled hole.

For another example: the number of the first holes 130 is two (not shown in the drawing), the two first holes 130 are arranged at intervals, and the distance between the centers of the two first holes 130 in the horizontal direction is greater than zero; the second hole 210 can communicate with any one of the two first holes 130.

Further, the distance between the centers of the two first holes 130 in the horizontal direction is greater than the sum of the hole radii of the two first holes.

When the first hole 130 is two circular holes, specifically, when the second hole 210 communicates with the first hole 130 near the left side, that is, the movable member 200 is installed at the position of the second hole 210 on the left side, the distance between the primary pulley and the secondary pulley 300 is small, so that the center distance of the drilled hole is small; on the contrary, when the second hole 210 communicates with the first hole 130 near the right side, that is, the movable member 200 is installed at the position of the second hole 210 near the right side, the distance between the primary pulley and the secondary pulley 300 is large, so that the center distance of the drilled hole is large.

In the above embodiment, the distance between the centers of the two first holes 130 in the horizontal direction is greater than the sum of the hole radii of the two first holes, so that on one hand, the distance between the master pulley and the slave pulley 300 can be increased greatly, and on the other hand, the situation that the two first holes 130 are not easy to open due to the close distance can be avoided; the distance between the two first holes 130 is not limited, and can be set reasonably according to the needs of practical application.

On the basis of the above embodiment, with reference to fig. 1, 3 and 4, the pulley device further includes a fixing member 400, the fixing member 400 is fixedly connected to the frame body 100, and two third holes 410 are formed in the fixing member 400 and spaced apart from each other; the movable member 200 is detachably coupled to the stationary member 400 such that the second hole 210 can communicate with both the first hole 130 and any one of the corresponding third holes 410.

In the structural form in which the first holes 130 are two circular holes, two third holes 410 correspond one-to-one to the two first holes 130 (not shown in the drawings). Specifically, the movable member 200 is coupled to the frame body 100 at a position near the first hole 130 at the right side, and at this time, the second hole 210 communicates with both the first hole 130 at the right side and the third hole 410 at the right side, so as to ensure that the end of the shaft can pass through the first hole 130, the third hole 410 and the second hole 210 in sequence.

In this embodiment, the fixing member 400 may be welded to the frame body 100; or, referring to fig. 1 again, the fixing member 400 is detachably connected to the frame body 100, specifically, the fixing member 400 and the frame body 100 are respectively provided with a plurality of mounting holes, and correspondingly, screws or bolts are inserted between the mounting holes, so as to connect the fixing member 400 and the frame body 100.

In the form in which the stationary member 400 is detachably coupled to the frame body 100, when it is required to adjust the center distance of the drilled hole, in one structural form, it is only necessary to remove the movable member 200 without detaching the stationary member 400, and to couple the movable member 200 to another first hole 130, and then to adjust the position of the slave pulley accordingly.

In this structure, as shown in fig. 1, the pulley device further includes a cover plate 500, the cover plate 500 is detachably connected to the fixed member 400, the cover plate 500 covers one of the third holes 410 of the fixed member 400, and the movable member 200 is connected to the other third hole 410 of the fixed member 400, so as to ensure that the third hole 410 is not exposed to the outside, thereby providing a more aesthetic appearance.

In another structure, the movable member 200 is provided in plurality (not shown in the drawings), and the number of the movable members 200 is equal to the number of the third holes 410, and the positions correspond to each other, and in this structure, when the center distance of the drilled holes needs to be adjusted, the movable member 200 does not need to be removed and the position of the driven pulley 300 needs to be adjusted accordingly, without detaching the fixed member 400.

On the basis of the above embodiment, as shown in fig. 1, the frame body 100 includes a first side plate 110 and a second side plate 120 connected and arranged in parallel, and a gap for accommodating the secondary pulley 300 is left between the first side plate 110 and the second side plate 120; the number of the movable members 200 is two, and the first side plate 110 and the second side plate 120 are both connected to one movable member 200, wherein the movable member 200 on the first side plate 110 is disposed opposite to the movable member 200 on the second side plate 120.

The first side plate 110 and the second side plate 120 may be thin plates capable of generating deformation.

On the basis of the above embodiment, please refer to fig. 1, the pulley apparatus further includes a limiting member 600, the limiting member 600 is detachably connected to the movable member 200, and the limiting member 600 is used for fixing the driven shaft on the driven pulley 300 relative to the movable member 200.

Specifically, the number of the limiting members 600 is two, and the limiting members are respectively a first limiting member (or an upper limiting member) and a second limiting member (or a lower limiting member), and an accommodating space is formed between the first limiting member and the second limiting member, so that the driven shaft on the driven pulley 300 is limited in the accommodating space, the driven shaft is prevented from moving in the axial direction of the driven shaft, and the pulley can be prevented from swinging back and forth along the axial line of the driven shaft.

Referring to fig. 1, the first and second limiting members are connected to the movable member 200 by screws or bolts.

When the slave pulley 300 is installed, the hole of the slave pulley 300 is aligned with the third hole 410, and the slave shaft is inserted into the slave pulley 300 and the third hole 410, then the fixed member 400 is installed on the first side plate 110 and the second side plate 120, respectively, then the movable member 200 is installed, and finally the first and second stoppers are installed, so that the end of the slave shaft is clamped between the first and second stoppers.

Referring to fig. 1 again, the first and second limiting members have the same structure, and both may be strip-shaped clamping plates.

It should be noted that the installation process of the slave pulley 300 is not limited to the specific form described above, and the specific installation sequence can be adjusted appropriately as long as the installation of the slave pulley 300 can be realized.

This embodiment also provides a sheave assembly including a main sheave (not shown in the drawings), a slave sheave 300, a wire rope (not shown in the drawings) connecting the main sheave and the slave sheave 300, and the aforementioned sheave device; the primary pulley is pivoted to the frame 100, and the secondary pulley 300 is pivoted to the movable member 200.

The pulley assembly comprises the pulley device, wherein the specific structure, the connection mode and the like of the pulley device are described in detail in the previous embodiment, and the pulley assembly has the same beneficial effects as the pulley device, and is not described again.

The embodiment also provides a rotary drilling rig which comprises the pulley assembly.

The rotary drilling rig comprises the pulley assembly, the pulley assembly comprises the pulley device, the specific structure, the connection mode and the like of the pulley device are described in detail in the previous embodiment, and the rotary drilling rig has the same beneficial effects as the pulley device and is not described in detail herein.

It should be noted that other structures of the rotary drilling rig, which are not mentioned in the present embodiment, may refer to the prior art, and the present embodiment does not improve the same.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.

Claims (10)

1. A pulley arrangement for mounting a pulley block, comprising: the movable part (200) is used for being pivoted with a slave pulley (300) in the pulley block, the movable part (200) is adjustable in the horizontal direction with the relative position between the support body (100), so that the distance between a main pulley in the pulley block and the slave pulley (300) is adjustable in the horizontal direction.

2. The pulley device according to claim 1, characterized in that a first hole (130) is provided on the frame body (100), a second hole (210) for passing the driven shaft of the driven pulley (300) is provided on the movable member (200), and the second hole (210) can communicate with the first hole (130) at a plurality of positions of the frame body (100).

3. The pulley device according to claim 2, characterized in that the first holes (130) are two and are circular holes, the two first holes (130) are arranged at intervals, the distance between the centers of the two first holes (130) in the horizontal direction is larger than zero, and the second hole (210) can be communicated with any one of the two first holes (130);

alternatively, the first aperture (130) is a kidney-shaped aperture, and the second aperture (210) is capable of communicating with the kidney-shaped aperture at a plurality of locations.

4. The pulley device according to claim 3, characterized in that it further comprises a fixing member (400), wherein the fixing member (400) is fixedly connected to the frame body (100), and two third holes (410) are arranged on the fixing member (400) at intervals;

the movable piece (200) is detachably connected with the fixed piece (400), so that the second hole (210) can be communicated with the first hole (130) and any corresponding third hole (410).

5. The pulley device according to claim 4, characterized in that it further comprises a cover plate (500), said cover plate (500) being detachably connected to said fixing member (400);

the cover plate (500) is covered at one position of the third hole (410) of the fixed part (400), and the movable part (200) is connected at the other position of the third hole (410) of the fixed part (400).

6. The pulley device according to claim 2, characterized in that the frame body (100) comprises a first side plate (110) and a second side plate (120) which are connected and arranged in parallel, and a gap for accommodating the slave pulley (300) is reserved between the first side plate (110) and the second side plate (120);

the number of the movable pieces (200) is at least two, the first side plate (110) and the second side plate (120) are both connected with at least one movable piece (200), and the movable piece (200) on the first side plate (110) and the movable piece (200) on the second side plate (120) are arranged just opposite to each other.

7. The pulley arrangement according to any of claims 2-6, characterized in that it further comprises a stop member (600), said stop member (600) being detachably connected to said movable member (200), said stop member (600) being adapted to fix the driven shaft on said driven pulley (300) relative to said movable member (200).

8. The pulley arrangement according to claim 7, characterized in that the number of the stop members (600) is two, respectively a first stop member (600) and a second stop member (600), and a receiving space is formed between the first stop member (600) and the second stop member (600) for limiting the driven shaft on the driven pulley (300) in the receiving space.

9. A sheave assembly, comprising: a primary sheave, a secondary sheave (300), a wire rope connecting the primary sheave and the secondary sheave (300), and the sheave arrangement of any one of claims 1-8;

the main pulley is pivoted to the frame body (100), and the auxiliary pulley (300) is pivoted to the movable piece (200).

10. A rotary drilling rig, characterized by comprising: the pulley assembly of claim 9.

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