CN217051435U

CN217051435U - Winding mechanism and rotary drilling rig thereof

Info

Publication number: CN217051435U
Application number: CN202220176585.2U
Authority: CN
Inventors: 徐明华; 彭楠
Original assignee: Beijing Sany Intelligent Technology Co Ltd
Current assignee: Beijing Sany Intelligent Technology Co Ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-07-26
Anticipated expiration: 2032-01-21

Abstract

The utility model relates to a rig technical field, concretely relates to hoist mechanism and dig rig soon thereof, including reel and drive reel pivoted drive structure, the surface of reel is equipped with the reducing section, still twines the connection rope on the reel, connect the at least partial winding of rope in the reducing section, the diameter crescent of reducing section, connect the rope when the release, the pulling force on the connection rope diminishes gradually, the effect point of connecting the rope power is removed to the big one end of diameter from the little one end of diameter, under the unchangeable condition of bearing torque of reel, set up the diameter increase of reel, make the reel can twine more connection ropes.

Description

Winch mechanism and rotary drilling rig thereof

Technical Field

The utility model relates to a rig technical field, concretely relates to hoist mechanism and dig rig soon thereof.

Background

The rotary drilling rig is a construction machine suitable for hole forming operation in building foundation engineering, is mainly suitable for soil layer construction of sandy soil, cohesive soil, silty soil and the like, and is widely applied to foundation construction of various foundations such as cast-in-place piles, foundation reinforcement and the like.

The main winch of the rotary drilling rig is mostly installed on a chassis at present, due to the limitation of the installation space of the main winch, the main winch winding drums of the rotary drilling rig are all set to be cylindrical winding drums, a rope is wound on the winding drums, the other end of the rope is used for connecting a drill rod, and the existing winding drums have the defects of small rope containing amount and the like. In the pile drilling process, the main winch bears the weight of all drill rods within the drilling depth range of the first section of drill rod, and the load is large; as the drilling depth increases, the main hoist only bears part of the weight of the drill pipe, and the load of the main hoist is gradually reduced. Therefore, the safety coefficient of the cylindrical winding drum has a large surplus when the deep hole drilling pile is carried out.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in that factor of safety is abundant on the reel among the make full use of prior art, through the diameter that changes the reel for hoist mechanism more is adapted to the construction operation, thereby provides a hoist mechanism and digs the rig soon.

In order to solve the problem, the utility model provides a dig hoist mechanism of rig soon, include: a spool having a reducer section along its own axis; the connecting rope is at least partially wound on the variable-diameter section; the driving structure is suitable for driving the winding drum to rotate; and the rope pressing structure is arranged in parallel with the winding drum.

Optionally, both ends of the variable-diameter section extend to both ends of the winding drum respectively.

Optionally, the circumferential outer surface of the reducer section is a conical surface.

Optionally, the circumferential outer surface of the reducer section is a curved surface.

Optionally, the number of the variable-diameter sections is multiple, and the diameters of the multiple variable-diameter sections are sequentially increased or decreased.

Optionally, the circumferential outer surface of the reducing section is a stepped surface, a conical surface or a curved surface.

Optionally, the shape of the rope pressing structure is adapted to the shape of the outer surface of the winding drum.

Optionally, the outer surface of the winding drum is provided with a rope groove.

Optionally, the spool comprises baffles at both ends of the reducer section.

The utility model also provides a dig rig soon, including foretell hoist mechanism.

The utility model has the advantages of it is following:

1. the utility model provides a winding mechanism of a reducing winding drum, the section of the winding drum is trapezoidal; the structure can greatly increase the rope capacity of the winch on the premise of not changing the integral size of the original winch; and when the drilling machine drills the pile, the stress of the winch is more reasonable, and the lifting and lowering speed of the drill rod is improved.

2. The diameter change of the reducing winding drum of the utility model is adapted to the tension change on the connecting rope, when the tension is reduced, the diameter of the winding drum is larger; when the pulling force is great, the diameter on the reel is less to the factor of safety of rational utilization reel increases the appearance rope volume on the reel.

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 embodiments or the technical solutions in 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic overall view of a rotary drilling rig according to a first embodiment of the present invention;

FIG. 2 shows a schematic diagram of a winding mechanism according to an embodiment of the present invention;

fig. 3 shows a force analysis diagram of a reel according to a first embodiment of the present invention;

fig. 4 shows a schematic view of a reel according to a first embodiment of the present invention;

FIG. 5 is a schematic view of a tapered section according to an embodiment of the present invention;

fig. 6 is a schematic view of a curved surface reducer section according to an embodiment of the present invention;

fig. 7 shows a schematic view of a second conical surface reducer section according to an embodiment of the present invention;

fig. 8 shows a schematic view of a second curved surface reducer section according to an embodiment of the present invention;

fig. 9 shows a schematic diagram of a second step surface reducer section according to an embodiment of the present invention.

Description of the reference numerals:

1. a chassis; 2. a hoisting mechanism; 3. a rope pressing structure; 11. drilling a rod; 12. a drive structure; 13. a power head; 21. a reel; 211. a diameter-changing section; 2111. a conical surface; 2112. a curved surface; 2113. a step surface; 212. a baffle plate; 213. a first end; 214. a second end; 22. connecting ropes; 23. rope grooves; 31. rope pressing roller.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element 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," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, 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 meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Example one

Referring to fig. 1 and 2, the rotary drilling excavator comprises a chassis 1 and a hoisting mechanism 2 arranged on the chassis 1, wherein the hoisting mechanism 2 comprises a winding drum 21 and a connecting rope 22 wound on the winding drum 21, the other end of the connecting rope 22 is connected with a drill rod 11, a steel wire rope is preferably selected by the connecting rope 22, a driving structure 12 is connected on the winding drum 21 and used for driving the winding drum 21 to rotate forward and backward, so that the connecting rope 22 is released or contracted, and the drill rod 11 is driven to move up and down. The driving mechanism 12 may be a conventional speed-reducing motor, which drives the drum 21 to rotate, and the structure is not described herein.

Referring to fig. 3, when drilling starts, the connecting rope 22 bears the entire mass of the drill rod 11, and the tension on the connecting rope 22 is large; as the depth of the drill hole deepens, the connecting rope 22 is released, the mass of the drill rod 11 is gradually borne by the power head 13 on the excavator, and the tension on the connecting rope 22 is gradually reduced. In terms of movement, the connecting rope 22 is wound on the drum 21, generally, the connecting rope 22 is wound on the drum 21 in one layer, and as the connecting rope 22 is released or contracted, the point of action of the connecting rope 22 on the drum 21 also moves along the axial direction of the drum 21, moving from one end to the other end. From the aspect of mechanical analysis, the connecting rope 22 is subjected to a pulling force F, a force arm L is formed between the action point of the connecting rope 22 and the center of the winding drum 21, the product of the pulling force F and the force arm L forms a moment M, and the winding drum 21 is subjected to the action of the moment M, so that the winding drum 21 is damaged, such as cracked or flattened, if the moment M is too large; if the moment M is too small, a large margin of safety exists for the spool 21.

Referring to fig. 4, when the moment M that can be borne by the reel 21 is constant, the tension F tends to change from small to small when the connecting rope 22 is released, which means that the moment arm L can adapt to the situation that the tension F increases from small to large, and the moment arm L corresponds to the radius of the reel 21. Therefore, the winding drum 21 may be configured as a variable diameter drum, and referring to fig. 4, the winding drum 21 includes a first end 213 and a second end 214 along its own axial direction, the first end 213 has a smaller diameter than the second end 214, and a variable diameter section 211 is provided between the first end 213 and the second end 214. The end of the connecting cord 22 is preferably secured to the second end 214, i.e., the larger diameter end of the spool 21, so that the connecting cord 22 is released from the first end 213 after being wound onto the spool 21. When the drill rod 11 is released downwards, namely the connection rope 22 is released, the action point of the connection rope 22 and the winding drum 21 moves from the first end 213 to the second end 214 of the winding drum 21, in the process, the action point of the connection rope 22 moves from one end with a small diameter to one end with a large diameter, the pulling force F changes from large to small, the diameter change on the winding drum 21 is adapted to the change of the pulling force F, and the part with the large diameter can be wound with more connection ropes 22, so that the drill rod 11 obtains a larger stroke. On the other hand, under the condition that the rotation speed of the winding drum 21 is the same, that is, the same angular speed, the linear speed of the position with the larger diameter is larger, when the action point of the connecting rope 22 moves to the position with the larger diameter, the drill rod 11 is also at the deeper drilling position, and at this time, the drill rod 11 is required to obtain a higher speed so as to dig out soil or gravel, and the work efficiency is improved.

Referring to fig. 4 and 5, the winding drum 21 includes blocking plates 212 provided at both ends of the diameter-variable section 211 for blocking the connection cord 22 from slipping from the winding drum 21 to both ends and falling off. Preferably, both ends of the reducing section 211 extend to both ends of the winding drum 21, of course, the circumferential outer surface of the winding drum 21 may be partially the reducing section 211, and in this embodiment, it is preferable that both circumferential outer surfaces of the winding drum 21 are the reducing sections 211. The outer circumferential surface of the variable diameter section 211 is a tapered surface 2111, that is, a section is taken along an arbitrary axis passing through the winding drum 21, and the longitudinal sectional contour line of the variable diameter section 211 is a straight line a, and the straight line a is disposed obliquely with respect to the axis of the winding drum 21. It should be noted that the line a formed by the contour of the longitudinal section of the drum 21 is two, i.e., upper and lower, and the two upper and lower lines a may be symmetrically disposed with respect to the axis of the drum 21 or asymmetrically disposed.

Referring to fig. 6, in another embodiment of the present disclosure, the circumferential outer surface of the reducing section 211 may also be a curved surface 2112, that is, a section is arbitrarily taken through the axis of the winding drum 21, the longitudinal section contour line of the reducing section 211 is a curve b, and the curve b gradually increases from the first end 213 to the second end 214. It should be noted that the contour lines of the longitudinal section of the reducer section 211 are two, i.e., the upper and lower curves b may be symmetrically arranged about the axis of the winding drum 21 or asymmetrically arranged.

Referring to fig. 4, the circumferential outer surface of the winding drum 21 is further provided with a rope groove 23, and the rope groove 23 is spirally provided on the reducer section 211 for arranging the connection rope 22.

Referring to fig. 2, further, the hoisting structure further includes a rope pressing structure 3, the rope pressing structure 3 is a conventional structure, the rope pressing structure 3 includes a rope pressing roller 31, the rope pressing roller 31 is disposed in parallel with the winding drum 21, and the shape of the rope pressing roller 31 is configured to be adapted to the circumferential outer surface of the winding drum 21, so as to press the connecting rope 22 in the rope groove 23.

Example two

The second embodiment is different from the first embodiment in that the number of the variable diameter sections 211 is different. Specifically, the number of the variable diameter sections 211 is plural, and may be two, three, four or even more, and in the present embodiment, only the preferred example that the number is three is given. Specifically, referring to fig. 7, the tapered sections 211 are tapered surfaces 2111, the tapered surfaces 2111 are the same as the tapered surfaces 2111 of the first embodiment, and the circumferential outer surface of the spool 21 between adjacent tapered sections 211 is a cylindrical surface. The diameters of the three variable diameter sections 211 are sequentially increased, and the connection cord 22 is similarly moved from the smaller diameter end to the larger diameter end when released.

Referring to fig. 8, in another embodiment, the variable diameter section 211 may also be a curved surface 2112, and the curved surface 2112 is the same as the curved surface 2112 of the first embodiment.

Referring to fig. 9, in another embodiment, the reducing section 211 may also be a stepped surface 2113.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications derived therefrom are intended to be within the scope of the invention.

Claims

1. The utility model provides a hoist mechanism of rig soon which characterized in that: the method comprises the following steps:

a mandrel (21), said mandrel (21) having a variable diameter section (211) along its own axis;

a connecting rope (22) at least partially wound around the reducer section (211);

-a driving structure (12) suitable for driving in rotation said drum (21);

the rope pressing structure (3) is arranged in parallel with the winding drum (21).

2. The hoisting mechanism of the rotary drilling rig according to claim 1, wherein: both ends of the reducing section (211) extend to both ends of the winding drum (21) respectively.

3. The hoisting mechanism of the rotary drilling rig according to claim 1 or 2, wherein: the circumferential outer surface of the variable diameter section (211) is a conical surface (2111).

4. The hoisting mechanism of the rotary drilling rig according to claim 1 or 2, wherein: the circumferential outer surface of the variable diameter section (211) is a curved surface (2112).

5. The hoisting mechanism of the rotary drilling rig according to claim 1, wherein: the number of the reducing sections (211) is multiple, and the diameters of the reducing sections (211) are sequentially increased or decreased.

6. The hoisting mechanism of the rotary drilling rig according to claim 5, wherein: the circumferential outer surface of the reducing section (211) is a stepped surface (2113), a conical surface (2111) or a curved surface (2112).

7. The hoisting mechanism of the rotary drilling rig according to claim 1, wherein: the shape of the rope pressing structure (3) is adapted to the shape of the outer surface of the winding drum (21).

8. The hoisting mechanism of the rotary drilling rig according to claim 1, wherein: the outer surface of the winding drum (21) is provided with a rope groove (23).

9. The hoisting mechanism of the rotary drilling rig according to claim 1, wherein: the winding drum (21) comprises baffles (212) at both ends of the reducer section (211).

10. A rotary drilling rig is characterized in that: comprising a hoisting mechanism according to any one of claims 1-9.