CN217233426U

CN217233426U - Luffing mechanism and operation machine

Info

Publication number: CN217233426U
Application number: CN202221129650.2U
Authority: CN
Inventors: 高海杰; 周亮
Original assignee: Beijing Sany Intelligent Technology Co Ltd
Current assignee: Beijing Sany Intelligent Technology Co Ltd
Priority date: 2022-05-11
Filing date: 2022-05-11
Publication date: 2022-08-19
Anticipated expiration: 2032-05-11

Abstract

The utility model relates to a dig the relevant technical field of rig soon, its purpose provides a luffing mechanism and operation machinery, and this kind of luffing mechanism can effectively improve inclined to one side mast problem, and can not increase equipment volume and construction radius of gyration, also not restricted by construction site space. The luffing mechanism comprises two mast oil cylinders and a tripod connected with the lower ends of the mast oil cylinders, wherein a horizontal telescopic mechanism is arranged between the two mast oil cylinders, and the horizontal telescopic mechanism drives the lower ends of the mast oil cylinders to oppositely or oppositely slide on the tripod in the horizontal direction.

Description

Luffing mechanism and operation machine

Technical Field

The utility model relates to a dig the relevant technical field of rig soon, concretely relates to luffing mechanism and operation machinery.

Background

The rotary drilling rig is a piling machine widely used in pile foundation industries such as industrial and civil construction, ports, high speed and the like, and the working principle of the rotary drilling rig is that a drill rod is driven by parts such as a chassis, a mast, a power head and the like to drive a drill bit to cut and take soil, then the drill bit is lifted out of a hole, and the operation is repeated until the hole is formed.

At present, after the medium-and-large-sized rotary drilling rig rotates to unload soil, the problem of mast deviation occurs at an indefinite time, and the mast deviation is specifically represented as +/-0.4-0.7 degrees in the X-axis direction. The mast is greatly rocked when the mast is turned on and turned off violently due to the fact that space limitation exists in the existing equipment and the included angle between the two mast oil cylinders is small, negative pressure is easily generated in the mast oil cylinders, and the mast deviation condition can be caused when the oil return back pressure exceeds the balance valve spring pressure maintaining minimum pressure value.

In contrast, the existing solution is to increase the size of the chassis platform and to place the cab at a position behind the luffing mechanism, so that the mast cylinder is stressed better and more stably. However, the chassis platform needs to be extended by more than half a meter in the solution, which causes the volume of the rotary drilling rig to be too large, the layout of the upper vehicle platform to be rough, the construction turning radius is increased by about 800mm, and the rotary drilling rig is not suitable for construction in a field with limited space and is easy to cause the problems of collision damage of a counterweight and an engine compartment door and the like.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming among the prior art and digging the rig soon and improve inclined to one side mast problem through the mode that increases chassis platform, can lead to equipment volume too big, be not suitable for the limited construction site in space, the defect of other problems such as counter weight appear moreover easily to provide one kind can effectively improve inclined to one side mast problem and can not increase equipment volume, not receive amplitude variation mechanism and the operation machinery of construction site space restriction.

In order to solve the problem, the utility model provides a luffing mechanism, including two mast hydro-cylinders and with the tripod that mast hydro-cylinder lower extreme is connected, two be provided with horizontal telescopic machanism between the mast hydro-cylinder, horizontal telescopic machanism drives the lower extreme of mast hydro-cylinder is in follow the relative or back of the body slip of horizontal direction on the tripod.

Optionally, the horizontal telescopic mechanism is arranged between the lower ends of the two mast oil cylinders; the horizontal telescopic mechanism comprises a telescopic driving piece, the telescopic driving piece is provided with two telescopic rods capable of horizontally extending out/retracting at the same time, the two telescopic rods are arranged in a back-to-back mode, and the outer ends of the two telescopic rods are connected with the lower end of one mast oil cylinder respectively.

Optionally, the lower end of the mast oil cylinder is hinged to a first supporting seat, and the outer end of the telescopic rod is connected with the first supporting seat.

Optionally, the outer end of the telescopic rod is hinged with a second supporting seat, and the second supporting seat is connected with the first supporting seat.

Optionally, the tripod includes back shaft, outer support piece, interior support piece and connecting piece, outer support piece with interior support piece passes through connecting piece fixed connection, the both ends of back shaft with outer support piece interior support piece is connected, first supporting seat is established with sliding ground cover on the back shaft.

Optionally, the length of the supporting shaft between the opposite surfaces of the outer supporting member and the inner supporting member is greater than the width of the first supporting seat.

Optionally, the telescopic driving member is a double-head oil cylinder.

Optionally, a hydraulic lock is arranged on the double-head oil cylinder.

Optionally, the change range of the included angle between the two mast cylinders driven by the horizontal telescopic mechanism is [5 degrees, 7 degrees ].

A working machine comprises the luffing mechanism.

The utility model has the advantages of it is following:

(1) the utility model provides an amplitude changing mechanism, be provided with horizontal telescopic machanism between two mast hydro-cylinders, under horizontal telescopic machanism's drive, the lower extreme of mast hydro-cylinder is relative or back of the body slip along the horizontal direction on the tripod, above-mentioned structure makes amplitude changing mechanism can stand mast and fall mast in-process, change the contained angle between two mast hydro-cylinders, thereby change amplitude changing mechanism to the support torque of mast, improve the stability of mast and the security of construction, effectively improve inclined to one side mast problem, and can not increase equipment volume, do not receive construction site space restriction, and above-mentioned structural strength is good, and be applicable to medium-sized and large-sized operation machinery.

(2) The utility model provides a luffing mechanism, under horizontal telescopic machanism's drive, the contained angle variation range between two mast hydro-cylinders is [5, 7 ], and above-mentioned angle range can satisfy the change demand of standing mast and falling mast in-process supporting torque, makes luffing mechanism can provide sufficient support to the mast, avoids the emergence of inclined to one side mast phenomenon.

(3) The utility model provides a luffing mechanism, wherein horizontal telescopic machanism sets up between the lower extreme of two mast hydro-cylinders, can increase the moment of application of force, makes horizontal telescopic machanism realize more easily the horizontal migration control of two masts.

(4) The utility model provides a luffing mechanism, horizontal telescopic machanism include flexible driving piece, and flexible driving piece has two telescopic links that can the while level stretch out/indentation, and two telescopic links set up back on the back mutually, and the outer end of two telescopic links is connected with the lower extreme of a mast hydro-cylinder respectively. The horizontal telescopic mechanism is simple in structure and easy to achieve, the telescopic driving piece is preferably a double-head oil cylinder, the working stability is good, the service life is long, and long-time construction operation can be carried out.

(5) The utility model provides a luffing mechanism is provided with the hydraulic pressure lock on double-end cylinder, when mast contained angle satisfies the requirement of standing mast and falling mast process, with double-end cylinder's telescopic link position locking, guarantees hydro-cylinder job stabilization nature and reliability.

(6) The utility model provides an operation machinery has the utility model discloses an amplitude changing mechanism can change the contained angle between two mast hydro-cylinders standing mast and falling mast in-process to change amplitude changing mechanism to the support torque of mast, improve the stability of mast and the security of construction, effectively improve inclined to one side mast problem, can not increase the volume of whole equipment moreover, make operation machinery not receive the construction site space restriction, application scope is wide.

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 prior art descriptions will be briefly described below, it is obvious that the drawings in the following descriptions are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 shows a schematic view of a (part of a) luffing mechanism of the invention in a mast standing position;

fig. 2 shows a schematic view of the luffing mechanism (part) of the invention in a mast collapse;

figure 3 shows a side view of (part of) a luffing mechanism according to the invention.

Description of reference numerals:

1-mast oil cylinder;

2-tripod, 201-supporting shaft, 202-outer support, 203-inner support, 204-connecting piece;

301-telescopic driving piece, 302-telescopic rod, 303-hydraulic lock;

4-a first support;

5-a second support seat.

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 is to 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 of ordinary skill in the art.

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

As shown in fig. 1 and 2, the luffing mechanism of the invention is a preferred embodiment. The luffing mechanism is suitable for operation machinery such as a rotary drilling rig and the like, and besides the functions of the existing luffing mechanism, the luffing mechanism can change the included angle between two mast oil cylinders in the mast erecting and mast falling processes, so that the supporting moment of the luffing mechanism on the masts is changed, the stability of the masts and the construction safety are improved, and the problem of mast deviation is effectively solved.

The luffing mechanism comprises two mast oil cylinders 1 and triangular supports 2, wherein the triangular supports 2 are connected with the lower ends of the mast oil cylinders 1, namely, the triangular supports 2 are arranged at the lower end of each mast oil cylinder 1, so that the number of the triangular supports 2 is two.

A horizontal telescopic mechanism is arranged between the two mast oil cylinders 1 and drives the lower ends of the mast oil cylinders 1 to slide oppositely or back to back on the tripod 2 along the horizontal direction. That is, the lower ends of the two mast cylinders 1 are not fixed to the tripod 2, the lower ends of the two mast cylinders 1 are slidable in the horizontal direction on the tripod 2, and the moving directions of the lower ends of the two mast cylinders 1 are opposite. The included angle between the two mast oil cylinders 1 can be changed through the horizontal sliding of the lower ends of the two mast oil cylinders 1, so that the supporting moment of the mast is changed under different working states of the mast, the mast works more stably, and the mast deviation phenomenon is avoided.

Further, the change range of the included angle between the two mast oil cylinders 1 driven by the horizontal telescopic mechanism is [5 degrees, 7 degrees ]. When the mast is erected, the included angle of the two mast oil cylinders 1 needs to be increased, and the included angle of the two mast oil cylinders 1 is preferably 7 degrees at the moment, so that the supporting moment is met; when the mast is inverted, the included angle of the two mast oil cylinders 1 needs to be reduced, at the moment, the included angle of the two mast oil cylinders 1 is preferably 5 degrees, and the interference between the mast and a cab can be avoided while the supporting moment is met.

In the present embodiment, a horizontal telescopic mechanism is preferably provided between the lower ends of the two mast cylinders 1 to increase the moment of application. The horizontal telescopic mechanism comprises a telescopic driving member 301, the telescopic driving member 301 is provided with two telescopic rods 302 capable of extending out/retracting horizontally at the same time, the two telescopic rods 302 are arranged in a back-to-back manner, and the outer ends of the two telescopic rods 302 are respectively connected with the lower end of one mast oil cylinder 1. In this embodiment, the telescopic driving member 301 is a double-head cylinder, specifically a double-piston rod cylinder, and the double-head cylinder has two telescopic rods 302, and the two telescopic rods 302 are arranged at 180 ° and have opposite movement directions.

Further, the lower end of the mast oil cylinder 1 is hinged with a first supporting seat 4, along with the difference of the working process, the angle between the mast oil cylinder 1 and the first supporting seat 4 can be changed, and the outer end of the telescopic rod 302 is connected with the first supporting seat 4. And the outer end of telescopic link 302 articulates there is second supporting seat 5, along with the difference of working process, can produce the angular variation between telescopic link 302 and the second supporting seat 5, and second supporting seat 5 is connected with first supporting seat 4. First supporting seat 4 and second supporting seat 5 homoenergetic strengthening structure intensity, improve equipment overall structure's fastness and stability.

Further, a hydraulic lock 303, also called a balance valve, is provided on the double-ended cylinder. According to different working projects, after the included angle between the two mast oil cylinders 1 meets the requirement, the hydraulic lock 303 can lock the positions of the two telescopic rods 302, so that the positions (the extending or retracting lengths) of the two telescopic rods 302 are not changed any more, and the included angle between the two mast oil cylinders 1 can be stably maintained.

Further, as shown in fig. 3, the tripod 2 includes a support shaft 201, an outer support 202, an inner support 203 and a connecting member 204. Wherein, the outer support 202 and the inner support 203 are arranged along the vertical direction, and the outer support 202 and the inner support 203 are fixedly connected through the connecting piece 204, so as to realize the structural reinforcement. The supporting shaft 201 is arranged along the horizontal direction, two ends of the supporting shaft 201 are connected with the outer supporting piece 202 and the inner supporting piece 203 to realize position fixing, the first supporting seat 4 is sleeved on the supporting shaft 201 in a sliding mode, and in order to enable the first supporting seat 4 to smoothly slide on the supporting shaft 201 horizontally, a sufficient fit clearance is formed between the first supporting seat 4 and the supporting shaft 201. Further, two ends of the supporting shaft 201 respectively penetrate through the outer supporting member 202 and the inner supporting member 203, and the distance between the opposite surfaces of the outer supporting member 202 and the inner supporting member 203 is a space in which the first supporting seat 4 can slide, so that the distance between the opposite surfaces of the outer supporting member 202 and the inner supporting member 203 (i.e., the length of the supporting shaft 201 between the outer supporting member 202 and the inner supporting member 203) is greater than the width of the first supporting seat 4, and the change of the included angle between the two mast cylinders 1 can be realized. Of course, the tripod 2 also includes other related structures of the existing tripod, which are not described in detail since the present embodiment does not relate to these structures, and these structures are not shown in fig. 1 to 3 either.

The embodiment also provides an operating machine, which comprises the luffing mechanism of the embodiment, and can change an included angle between two mast oil cylinders in the mast erecting and mast falling processes of the operating machine, so that the supporting moment of the luffing mechanism on the mast is changed, the stability and construction safety of the mast are improved, the mast deviation problem is effectively solved, the size and construction turning radius of the operating machine cannot be increased, the operating machine is not limited by the space of a construction site, and the application range is wider.

The working process of the working machine amplitude changing mechanism in the process of erecting the mast and collapsing the mast is described as follows:

when the mast is erected, the two telescopic rods 302 of the double-head oil cylinder extend out (extend) horizontally and outwards at the same time to drive the lower ends of the two mast oil cylinders 1 to slide horizontally and outwards at the same time, because the upper end positions of the mast oil cylinders 1 are unchanged, the included angle between the two mast oil cylinders 1 is increased in the process, when the included angle between the two mast oil cylinders 1 is increased to 7 degrees, the two telescopic rods 302 stop extending out, and the hydraulic lock 303 locks the positions of the two telescopic rods 302;

when the mast is reversed, the two telescopic rods 302 of the double-head oil cylinder are simultaneously horizontally retracted (shortened) inwards to drive the lower ends of the two mast oil cylinders 1 to simultaneously horizontally slide inwards, the upper end positions of the mast oil cylinders 1 are unchanged, the included angle between the two mast oil cylinders 1 is reduced in the process, when the included angle between the two mast oil cylinders 1 is reduced to 5 degrees, the two telescopic rods 302 stop retracting, and the hydraulic lock 303 locks the positions of the two telescopic rods 302.

In other embodiments, the telescopic driving member 301 may also be driven by an air cylinder or a gas-liquid pressurizing air cylinder according to different construction requirements.

In other embodiments, the included angle between the two mast oil cylinders 1 can also be 5.5 degrees, 6 degrees, 6.8 degrees and the like under the driving of the horizontal telescopic mechanism according to different construction requirements.

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 can be made without departing from the scope of the invention.

Claims

1. The utility model provides a luffing mechanism, includes two mast hydro-cylinders (1) and with tripod (2) that mast hydro-cylinder (1) lower extreme is connected, its characterized in that: a horizontal telescopic mechanism is arranged between the two mast oil cylinders (1), and the horizontal telescopic mechanism drives the lower ends of the mast oil cylinders (1) to slide oppositely or back to back on the tripod (2) along the horizontal direction.

2. The horn of claim 1, wherein: the horizontal telescopic mechanism is arranged between the lower ends of the two mast oil cylinders (1); the horizontal telescopic mechanism comprises a telescopic driving piece (301), the telescopic driving piece (301) is provided with two telescopic rods (302) capable of extending out/retracting horizontally at the same time, the two telescopic rods (302) are arranged in a back-to-back mode, and the outer ends of the two telescopic rods (302) are connected with the lower end of the mast oil cylinder (1) respectively.

3. The horn of claim 2, wherein: the lower end of the mast oil cylinder (1) is hinged with a first supporting seat (4), and the outer end of the telescopic rod (302) is connected with the first supporting seat (4).

4. The horn of claim 3, wherein: the outer end of telescopic link (302) articulates there is second supporting seat (5), second supporting seat (5) with first supporting seat (4) are connected.

5. The horn of claim 3, wherein: tripod (2) are including back shaft (201), outer support piece (202), interior support piece (203) and connecting piece (204), outer support piece (202) with interior support piece (203) pass through connecting piece (204) fixed connection, the both ends of back shaft (201) with outer support piece (202) interior support piece (203) are connected, first support seat (4) cover establish with sliding on back shaft (201).

6. The horn of claim 5, wherein: the length of the supporting shaft (201) between the outer support (202) and the inner support (203) is larger than the width of the first supporting seat (4).

7. The horn of claim 2, wherein: the telescopic driving piece (301) is a double-head oil cylinder.

8. The horn of claim 7, wherein: and a hydraulic lock (303) is arranged on the double-head oil cylinder.

9. The horn mechanism of any one of claims 1 to 8, wherein: the change range of the included angle between the two mast oil cylinders (1) driven by the horizontal telescopic mechanism is [5 degrees ], 7 degrees ].

10. A working machine comprising a horn according to any one of claims 1 to 9.