CN108086926B - Flexible connecting device for tail end of pressurizing oil cylinder and rotary drilling rig - Google Patents
Flexible connecting device for tail end of pressurizing oil cylinder and rotary drilling rig Download PDFInfo
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- CN108086926B CN108086926B CN201711445275.6A CN201711445275A CN108086926B CN 108086926 B CN108086926 B CN 108086926B CN 201711445275 A CN201711445275 A CN 201711445275A CN 108086926 B CN108086926 B CN 108086926B
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/08—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods
- E21B19/086—Apparatus for feeding the rods or cables; Apparatus for increasing or decreasing the pressure on the drilling tool; Apparatus for counterbalancing the weight of the rods with a fluid-actuated cylinder
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Abstract
The invention provides a flexible connecting device for the tail end of a pressurizing oil cylinder and a rotary drilling rig. The flexible connecting device for the tail end of the pressurizing oil cylinder comprises a connecting seat and a damping elastic piece, and is suitable for connecting a mast of the rotary drilling rig and a connecting rod at the tail end of the pressurizing oil cylinder. The connecting base comprises a first connecting portion and a second connecting portion, the first connecting portion is provided with a mounting hole, and the second connecting portion is used for being connected with a mast of the rotary drilling rig. The damping elastic piece is fixed in the mounting hole, the damping elastic piece is provided with a buffer hole for accommodating the connecting rod, and the damping elastic piece can be abutted against the outer wall of the connecting rod to reduce the vibration of the pressurizing oil cylinder. The flexible connecting device at the tail end of the pressurizing oil cylinder can effectively absorb vibration and impact in the working process of the pressurizing oil cylinder and can solve the problem that the connecting device and the fixing bolt are easy to damage; the working condition of the internal sealing structure of the pressurizing oil cylinder can be improved, and the service life of the pressurizing oil cylinder is prolonged. Furthermore, the rotary drilling rig has longer service life.
Description
Technical Field
The invention relates to the field of rotary drilling rigs, in particular to a flexible connecting device for the tail end of a pressurizing oil cylinder and a rotary drilling rig.
Background
At present, when a rotary drilling rig works, a drilling tool needs to provide pressurizing force to realize efficient soil cutting and loading. The pressurization modes are 2 types, namely oil cylinder pressurization and hoisting pressurization. The oil cylinder pressurizing structure is simple and convenient to install, but the pressurizing stroke is limited. The winch pressurization can realize full-stroke pressurization, but the structure is complex, and the assembly and disassembly are troublesome. The two pressurizing modes have the advantages and the disadvantages respectively, and are common in use.
When the oil cylinder pressurizing structure is used, the front end of an oil cylinder piston rod is connected with a power head sliding frame, the power head sliding frame is connected with a mast through a guide rail, a movable gap exists, and the gap is increased after the oil cylinder pressurizing structure is used and abraded. In order to meet the requirement of a pressurizing stroke, the cylinder barrel and the piston rod of the pressurizing oil cylinder are very long, and certain deviation exists after the pressurizing oil cylinder is assembled into an oil cylinder assembly. In order to facilitate installation and ensure that the drilling machine can move left and right along with the power head sliding frame when working, a movable space is reserved at the cylinder head part or the cylinder bottom part of the pressurizing oil cylinder.
Disclosure of Invention
The invention aims to provide a flexible connecting device for the tail end of a pressurizing oil cylinder and a rotary drilling rig, so as to overcome the existing defects.
In order to solve at least one of the above technical problems, the present invention provides the following technical solutions:
the utility model provides a pressurization hydro-cylinder tail end flexible connection device which is applicable to the connecting rod of connecting the mast of digging the rig soon and pressurization hydro-cylinder tail end, includes:
the connecting base comprises a first connecting part and a second connecting part, the first connecting part is provided with a mounting hole, and the second connecting part is used for being connected with a mast of the rotary drilling rig; and
the damping elastic piece is fixed in the mounting hole and provided with a buffer hole for accommodating the connecting rod, and the damping elastic piece can abut against the outer wall of the connecting rod to reduce the vibration of the pressurizing oil cylinder.
Further, in an alternative embodiment of the present invention, the damping elastic member is a split structure or an integrated structure.
Further, in an optional embodiment of the present invention, the flexible connecting device at the tail end of the pressurizing cylinder further includes a first limiting member, the damping elastic member is of a circular ring structure, the mounting hole is a stepped hole, the mounting hole includes a first hole section and a second hole section that are mutually communicated, a diameter of the first hole section is larger than an outer diameter of the damping elastic member, a diameter of the second hole section is smaller than the outer diameter of the damping elastic member and larger than the outer diameter of the connecting rod, the damping elastic member is mounted in the first hole section, and the damping elastic member is fixed to the first hole section through the first limiting member.
Further, in an optional embodiment of the present invention, the first limiting member has a through hole, and a hole diameter of the through hole is larger than an outer diameter of the connecting rod and smaller than an outer diameter of the damping elastic member.
Further, in an optional embodiment of the present invention, the damping elastic member is a circular ring structure, the flexible connecting device at the tail end of the pressurizing cylinder further includes a first limiting member and a second limiting member, the first limiting member has a through hole, and an aperture of the through hole is larger than an outer diameter of the connecting rod and smaller than an outer diameter of the damping elastic member; the second limiting piece is provided with a through hole, and the aperture of the through hole is larger than the outer diameter of the connecting rod and smaller than the outer diameter of the damping elastic piece; the first limiting part and the second limiting part clamp and fix the damping elastic part in the mounting hole from two axial sides of the damping elastic part respectively.
Further, in an optional embodiment of the present invention, the shock absorbing device further comprises a bushing, wherein the bushing is located in the buffer hole and fixed with the inner wall of the shock absorbing elastic member.
Further, in an alternative embodiment of the present invention, the second connecting portion is provided with a connecting hole, and the second connecting portion is connected to the mast by a bolt.
Further, in an optional embodiment of the present invention, the connection hole is a kidney-shaped hole, and a length direction of the kidney-shaped hole is perpendicular to a central line direction of the buffer hole.
Further, in an optional embodiment of the present invention, the connection seat is in an "L" shape.
A rotary drilling rig comprises a mast, a pressurizing oil cylinder, a connecting rod and a flexible connecting device at the tail end of the pressurizing oil cylinder; the head of the pressurizing oil cylinder is fixedly connected with the mast in the axial direction, the connecting rod is connected to the tail end of the pressurizing oil cylinder, the second connecting part is connected with the mast, and the connecting rod is movably arranged in the buffer hole of the damping elastic part.
The beneficial effects of the invention include: according to the flexible connecting device for the tail end of the pressurizing oil cylinder, which is obtained by the design, the vibration and the impact in the working process of the pressurizing oil cylinder can be effectively absorbed, and the problem that the connecting device and the fixing bolt are easy to damage can be solved; the working condition of the internal sealing structure of the pressurizing oil cylinder can be improved, and the service life of the pressurizing oil cylinder is prolonged. Furthermore, the rotary drilling rig has longer service life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a partial schematic view of a rotary drilling rig according to embodiment 1 of the present invention;
fig. 2 is a schematic view of a flexible connection device for the tail end of a pressurizing cylinder provided in embodiment 1 of the present invention;
fig. 3 is a schematic view of a flexible connection device for the tail end of a pressurizing cylinder provided in embodiment 2 of the present invention;
fig. 4 is a schematic view of a flexible connection device for the tail end of a pressurizing cylinder provided in embodiment 3 of the present invention.
Icon: 10, a rotary drilling rig; 100-flexible connecting device for tail end of pressurizing oil cylinder; 110-a connecting seat; 110 a-a first connection; 110 b-a second connecting portion; 111-mounting holes; 111 a-a first bore section; 111 b-a second bore section; 120-a shock absorbing elastic member; 121-buffer holes; 130-a first limit stop; 140-a second stop; 200-mast; 300-a pressurizing oil cylinder; 310-a cylinder barrel; 320-a piston rod; 400-a connecting rod; 500-power head carriage; 600-guide rail.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention. 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 obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
Example 1, as shown with reference to figures 1 and 2,
referring to fig. 1, fig. 1 is a partial schematic view of a rotary drilling rig 10 according to the present embodiment. The rotary drilling rig 10 belongs to a cylinder pressurization mode and comprises a pressurization cylinder tail end flexible connecting device 100, a mast 200, a pressurization cylinder 300, a power head carriage 500 and a guide rail 600.
The track 600 is fixed to the mast 200, and the length of the track 600 is the same as the length of the mast 200, and the power head carriage 500 is slidably coupled to the track 600. The pressurization cylinder 300 includes a cylinder 310 and a piston rod 320, the piston rod 320 being connected to the powerhead carriage 500. The piston rod 320 extends from the head of the cylinder 310 and is telescopically movable relative to the cylinder 310 by hydraulic oil.
In order for the piston rod 320 to apply force to the power head carriage 500 to linearly reciprocate the power head carriage 500 along the length of the mast 200, the cylinder 310 must be fixedly coupled to the mast 200 along the length of the mast 200, i.e., along the axial direction of the cylinder 310. The rear end of the pressurizing cylinder 300, i.e., the rear end of the cylinder tube 310, may be axially fixed to the mast 200; or the head of the pressurizing cylinder 300, i.e., the head of the cylinder 310, is axially fixed to the mast 200; alternatively, both the tail end and the head end of the pressurizing cylinder 300 may be axially fixed to the mast 200. It should be noted that the over-positioning problem can occur when the tail end and the head end of the pressurizing cylinder 300 are both axially fixed to the mast 200.
Also, because the power head carriage 500 is coupled to the mast 200 via the track 600, there is play and wear increases as the drill is operated, the power head carriage 500 may be moved away from or closer to the mast 200. In order to meet the requirement of the pressurizing stroke, the cylinder 310 and the piston rod 320 of the pressurizing cylinder 300 are long, and certain deviation exists after the cylinder assembly is assembled. To facilitate installation and to allow the end of the piston rod 320 to follow the power head carriage 500 away from or toward the mast 200 during operation of the drill, at least the head of the piston rod 320 of the pressurization cylinder 300 is free.
The inventor has found that if only the head of the cylinder 310 is axially fixed to the mast 200, and a metal fixing seat is connected to the mast 200, which leaves a space for the tail end of the cylinder 310. When the drilling machine drills under pressure, the vibration of the power head carriage 500 is transmitted to the pressurizing oil cylinder 300, and the tail end of the pressurizing oil cylinder shakes to impact the fixed seat. After long-time work, the fixing seat can be abraded, deformed and even broken. In addition, the vibration and the impact may damage the inner seal of the pressurizing cylinder 300, and cause a failure such as leakage and oil leakage in the cylinder.
If only the tail end of the cylinder 310 is axially fixed to the mast 200, a metal fixing seat reserving a space for movement of the head of the cylinder 310 is connected to the mast 200. Then, when the drilling machine drills under pressure, the problem that the root of the pressurizing oil cylinder 300 shakes and impacts is solved, but the stability of the pressurizing oil cylinder 300 is affected due to the fact that the installation distance is greatly lengthened, the internal seal of the oil cylinder is prone to damage after long-term operation, and faults such as oil leakage and the like in the oil cylinder are caused.
In the rotary drilling rig 10 provided in the embodiment, the head of the cylinder 310 is axially fixed to the mast 200, for example, the head of the cylinder 310 may be axially fixed to the mast 200 by using an existing connecting member such as a spider, and both ends of the pressurizing cylinder 300 may be close to or far from the mast 200. A gap is reserved between the cylinder 310 and the mast 200, and a gap is also reserved between the same piston rod 320 and the mast 200, so that when the end of the piston rod 320 moves close to the mast 200, the tail end of the cylinder 310 can move away from the mast 200, and when the drilling machine works, the pressurizing cylinder 300 can slightly swing, similar to a lever.
In this embodiment, the connection point with the mast 200 is located at the head of the cylinder 310, and is closer to the end of the piston rod 320 than to the tail end of the cylinder 310, so that the installation distance is shorter.
To prevent over-positioning and to improve damage to the pressurization cylinder 300 itself and the connection device from vibration of the pressurization cylinder 300.
In this embodiment, the tail end of the cylinder 310 is connected to the mast 200 through a fixing base modified by the inventor, and specifically, the flexible connecting device 100 for the tail end of the pressurizing cylinder is adopted. The flexible connecting device 100 for the tail end of the pressurizing oil cylinder comprises a damping elastic member 120 with a buffer hole 121, a connecting rod 400 is fixed at the tail end of the pressurizing oil cylinder 300, and the connecting rod 400 is movably arranged in the buffer hole 121 of the damping elastic member 120. The buffer hole 121 may be a through hole that penetrates in the axial direction of the cylinder 310, or may be a hole that does not penetrate, that is, a blind hole. However, when the cushion hole 121 is a blind hole, a sufficient space is reserved for the connecting rod 400 and the bottom of the hole so as not to excessively position the damping elastic member 120 with respect to the pressurizing cylinder 300.
Although the damping elastic member 120 is provided, in order to avoid placing a more severe requirement on the shore hardness of the damping elastic member 120, further, the diameter of the connecting rod 400 is smaller than that of the buffer hole 121, and a buffer gap is reserved between the connecting rod 400 and the hole wall of the buffer hole 121.
Further, referring to fig. 2, a flexible connection device 100 for the tail end of the pressurization cylinder according to the present embodiment is described in more detail.
The flexible connecting device 100 for the tail end of the pressurizing cylinder provided by the embodiment is suitable for connecting the mast 200 of the rotary drilling rig 10 and the connecting rod 400 at the tail end of the pressurizing cylinder, and mainly comprises a connecting seat 110 and a damping elastic part 120.
The elastic damping member 120 has a buffer hole 121 for accommodating the connecting rod 400, the elastic damping member 120 is fixed to the connecting seat 110, and the elastic damping member 120 can abut against the outer wall of the connecting rod 400 to reduce the vibration of the pressurizing cylinder 300. Preferably, the shock-absorbing elastic member 120 is made of a material having elasticity, and may be made of rubber, for example.
The connecting socket 110 may be made of hard metal to provide sufficient support, and the shock-absorbing elastic member 120 mainly serves to absorb vibration and impact. In order to ensure that the pressurizing cylinder 300 has a moving space, the diameter of the buffer hole 121 is slightly larger than the diameter of the connecting rod 400, and a buffer gap is reserved between the connecting rod 400 and the hole wall of the buffer hole 121.
Further, the shock-absorbing elastic member 120 is a one-piece structure, such as a circular shock-absorbing sleeve in the present embodiment. In an alternative embodiment of the present invention, the shock-absorbing elastic member 120 may be a split structure, such as a circular ring structure or a structure similar to a circular ring, which is composed of two, three or more components.
The connecting socket 110 includes a first connecting portion 110a and a second connecting portion 110b, the first connecting portion 110a is provided with a mounting hole 111, and the second connecting portion 110b is used for connecting with the mast 200 of the rotary drilling rig 10. Further, in the present embodiment, the connecting seat 110 is shaped like an "L". As shown in fig. 2, the first connecting portion 110a is disposed horizontally, and the second connecting portion 110b is disposed vertically, and when they are connected, the connecting base 110 is substantially L-shaped as a whole as viewed from the perspective of fig. 2. In other embodiments of the present invention, the connecting seat 110 may have other shapes as a whole.
The second connecting portion 110b and the mast 200 are both metal members, and a connecting hole may be provided in the second connecting portion 110b, and the second connecting portion 110b is connected to the mast 200 by a bolt. Further, in order to facilitate adjustment of the assembly position of the pressurizing cylinder 300, the connection hole is a kidney-shaped hole, and the length direction of the kidney-shaped hole is perpendicular to the center line direction of the buffer hole 121. For example, in the view shown in fig. 2, the connection holder 110 may be moved outward or inward in a direction perpendicular to the paper surface. In other embodiments of the present invention, the relationship between the length direction of the kidney-shaped hole and the center line direction of the buffer hole 121 may be between vertical and parallel. Other attachment means may be used instead of bolts and kidney-shaped holes to allow the position of the attachment socket 110 relative to the mast 200 to be adjustable.
One of the functions of the connecting seat 110 is to fixedly mount the damping elastic member 120, for example, when the damping elastic member 120 is a circular ring structure, the damping elastic member 120 needs to be restricted in both radial and axial directions.
The installation hole 111 is provided with a suitable aperture, and the elastic damper 120 is fitted into the installation hole 111 to be restricted at least in a radial direction. Further, in order to axially limit the damping elastic member 120, the flexible connecting device 100 for the rear end of the pressurization cylinder further includes a first limiting member 130, and the mounting hole 111 is a stepped hole.
Wherein, the mounting hole 111 includes a first hole section 111a and a second hole section 111b communicating with each other, a diameter of the first hole section 111a is larger than an outer diameter of the shock-absorbing elastic member 120, and further, centers of the first hole section 111a and the second hole section 111b may coincide. The elastic shock absorbing member 120 is mounted in the first hole segment 111a, and the elastic shock absorbing member 120 is fixed to the first connecting portion 110a through the first limiting member 130.
The diameter of the second hole section 111b is smaller than the outer diameter of the damping elastic member 120 and larger than the outer diameter of the connecting rod 400, so that one axial end of the damping elastic member 120 abuts against the transition position between the first hole section 111a and the second hole section 111b, which is equivalent to limiting one axial end of the damping elastic member 120, and further, the first limiting member 130 presses the damping elastic member 120 from the other axial end of the damping elastic member 120 to limit the two axial ends of the damping elastic member 120. In addition, further, the diameter of the second hole section 111b is larger than the inner diameter of the damper elastic member 120, and the connecting rod 400 does not contact the second hole section 111b when the oil cylinder vibrates. Further, the magnitude relation between the outer diameter and the inner diameter of the second hole section 111b and the damping elastic member 120 may be designed by combining the extreme vibration force of the refueling cylinder and the extreme position of the damping elastic member 120 after being compressed.
Further, the first limiting member 130 has a through hole with the same diameter as the second hole segment 111 b. The first limiting member 130 is fixed to the first connecting portion 110a by a bolt or a screw. In other embodiments of the present invention, the diameter of the through-hole may also satisfy other sizes that the through-hole is larger than the outer diameter of the connecting rod 400 and the inner diameter of the shock-absorbing elastic member 120 and smaller than the outer diameter of the shock-absorbing elastic member 120.
Further, in the present embodiment, a bushing (not shown) is further provided in the buffer hole 121 to prevent the connecting rod 400 from directly hitting the shock-absorbing elastic member 120. The bush is located between the connecting rod 400 and the shock-absorbing elastic member 120, and the bush is made of hard materials such as metal, and has higher strength and reliability compared with elastic materials such as rubber. The bushing is fixed to the inner wall of the shock-absorbing elastic member 120.
The flexible connecting device 100 for the tail end of the pressurizing oil cylinder provided by the embodiment can effectively absorb vibration and impact in the operation of the pressurizing oil cylinder 300, and can solve the problem that the connecting device and the fixing bolt are easy to damage; the working condition of the internal sealing structure of the pressurizing oil cylinder 300 can be improved, and the service life of the pressurizing oil cylinder 300 is prolonged. Further, the rotary drilling rig 10 has a longer service life.
Embodiment 2 as shown with reference to figure 3,
the implementation principle and the generated technical effects of the flexible connecting device for the tail end of the pressurizing oil cylinder provided by the embodiment of the invention are basically the same as those of the flexible connecting device in the embodiment 1, and for the sake of brief description, corresponding contents in the embodiment 1 can be referred to for nothing in the embodiment.
The embodiment provides a flexible connecting device for the tail end of a pressurizing cylinder, and the difference from embodiment 1 includes that the flexible connecting device for the tail end of a pressurizing cylinder includes not only a first limiting member 130 but also a second limiting member 140. The second limiting member 140 has the same structure as the first limiting member 130, and the second limiting member 140 also has a through hole, and the aperture of the through hole is larger than the outer diameter of the connecting rod 400 and smaller than the outer diameter of the elastic damping member 120. The mounting hole 111 of the first connection portion 110a is a through hole having a uniform diameter, not a stepped hole. The first limiting member 130 and the second limiting member 140 clamp and fix the elastic damping member 120 to the first connection portion 110a from two axial sides of the elastic damping member 120, respectively. The first limiting member 130 and the second limiting member 140 are connected to the first connecting portion 110a by a plurality of bolts.
Embodiment 3 as shown with reference to figure 4,
the implementation principle and the generated technical effects of the flexible connecting device for the tail end of the pressurizing oil cylinder provided by the embodiment of the invention are basically the same as those of the flexible connecting device in the embodiment 1, and for the sake of brief description, corresponding contents in the embodiment 1 can be referred to for nothing in the embodiment.
The present embodiment provides a flexible connection device for the tail end of a pressurizing cylinder, which is different from embodiment 1 in that the first limiting member 130 is omitted, and the first hole section 111a and the second hole section 111b of the installation hole 111 are exchanged, and the first hole section 111a with a larger hole diameter is closer to the pressurizing cylinder 300. In this embodiment, the shape of the elastic damping member 120 is also different from that of embodiment 1, and in this embodiment, the shape of the elastic damping member 120 is a convex shape, similar to a hat. The shock-absorbing elastic member 120 has a blind hole having an inner diameter slightly larger than that of the connecting rod 400, and the open end of the blind hole has a flange extending radially outward, and the other axial end of the blind hole is closed. The outer shape of the elastic shock absorbing member 120 is matched with the mounting hole 111, and a flange of the elastic shock absorbing member 120 may be inserted into the first hole section 111 a. The shock-absorbing elastic member 120 having such a structure is simple, and the installation connection of the shock-absorbing elastic member 120 to the first connection portion 110a is also simpler.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The utility model provides a pressurization hydro-cylinder tail end flexible connection device, its connecting rod that is applicable to connecting the mast of digging the rig soon and pressurization hydro-cylinder tail end, its characterized in that includes:
the connecting base comprises a first connecting part and a second connecting part, the first connecting part is provided with a mounting hole, and the second connecting part is used for being connected with a mast of the rotary drilling rig;
the damping elastic piece is of a circular ring-shaped structure and is fixed in the mounting hole, the damping elastic piece is provided with a buffer hole for accommodating the connecting rod, and the damping elastic piece can be abutted against the outer wall of the connecting rod to reduce the vibration of the pressurizing oil cylinder; the diameter of the connecting rod is smaller than that of the buffer hole, and a buffer gap is reserved between the connecting rod and the hole wall of the buffer hole;
the first limiting piece and the second limiting piece are arranged at the upper end and the lower end of the mounting hole, the first limiting piece is provided with a through hole, and the aperture of the through hole is larger than the outer diameter of the connecting rod and the inner diameter of the damping elastic piece and smaller than the outer diameter of the damping elastic piece; the second limiting part is provided with a through hole, and the aperture of the through hole is larger than the outer diameter of the connecting rod and the inner diameter of the damping elastic part and smaller than the outer diameter of the damping elastic part; the first limiting part and the second limiting part clamp and fix the damping elastic part to the first connecting part from two axial sides of the damping elastic part respectively.
2. The flexible connection device for the tail end of the pressurization oil cylinder as claimed in claim 1, wherein the damping elastic member is of a split structure or an integrated structure.
3. The flexible connection device for the tail end of the pressurizing cylinder according to claim 1,
the flexible connecting device for the tail end of the pressurizing oil cylinder further comprises a bushing, and the bushing is located in the buffer hole and fixed with the inner wall of the damping elastic piece.
4. The flexible connection device for the tail end of the pressurizing cylinder according to claim 1,
the second connecting portion is provided with a connecting hole and is connected with the mast through a bolt.
5. The flexible connection device for the tail end of the pressurizing cylinder as claimed in claim 4,
the connecting hole is a waist-shaped hole, and the length direction of the waist-shaped hole is perpendicular to the middle line direction of the buffer hole.
6. The flexible connecting device for the tail end of the pressurizing oil cylinder as claimed in claim 1, wherein the connecting seat is L-shaped.
7. The utility model provides a pressurization hydro-cylinder tail end flexible connection device, its connecting rod that is applicable to connecting the mast of digging the rig soon and pressurization hydro-cylinder tail end, its characterized in that includes:
the connecting base comprises a first connecting part and a second connecting part, the first connecting part is provided with a mounting hole, and the second connecting part is used for being connected with a mast of the rotary drilling rig;
the damping elastic piece is of a circular ring-shaped structure and is fixed in the mounting hole, the damping elastic piece is provided with a buffer hole for accommodating the connecting rod, and the damping elastic piece can be abutted against the outer wall of the connecting rod to reduce the vibration of the pressurizing oil cylinder; the diameter of the connecting rod is smaller than that of the buffer hole, and a buffer gap is reserved between the connecting rod and the hole wall of the buffer hole;
and the damping elastic piece is of a circular ring-shaped structure, the mounting hole is a stepped hole and comprises a first hole section and a second hole section which are communicated with each other, the diameter of the first hole section is larger than the outer diameter of the damping elastic piece, the diameter of the second hole section is smaller than the outer diameter of the damping elastic piece and larger than the outer diameter of the connecting rod, the damping elastic piece is installed in the first hole section, and the damping elastic piece is fixed in the first hole section through the first limiting piece.
8. The flexible connection device for the tail end of a pressurization cylinder as claimed in claim 7, wherein the first limiting member has a through hole, and the diameter of the through hole is larger than the outer diameter of the connection rod and smaller than the outer diameter of the damping elastic member.
9. A rotary drilling rig is characterized by comprising a mast, a pressurizing oil cylinder, a connecting rod and a flexible connecting device for the tail end of the pressurizing oil cylinder according to any one of claims 1-8; the head of the pressurizing oil cylinder is fixedly connected with the mast in the axial direction, the connecting rod is connected to the tail end of the pressurizing oil cylinder, the second connecting part is connected with the mast, and the connecting rod is movably arranged in the buffer hole of the damping elastic part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711445275.6A CN108086926B (en) | 2017-12-27 | 2017-12-27 | Flexible connecting device for tail end of pressurizing oil cylinder and rotary drilling rig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711445275.6A CN108086926B (en) | 2017-12-27 | 2017-12-27 | Flexible connecting device for tail end of pressurizing oil cylinder and rotary drilling rig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108086926A CN108086926A (en) | 2018-05-29 |
| CN108086926B true CN108086926B (en) | 2020-05-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711445275.6A Active CN108086926B (en) | 2017-12-27 | 2017-12-27 | Flexible connecting device for tail end of pressurizing oil cylinder and rotary drilling rig |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2153014A1 (en) * | 2007-05-18 | 2010-02-17 | Sandvik Mining and Construction Oy | Arrangement for employing drill steel centralizer travelling on feed beam of rock drill machine |
| CN202360669U (en) * | 2011-11-30 | 2012-08-01 | 北京市三一重机有限公司 | Cylinder bottom fixed damping device of pressurizing oil cylinder of rotary drilling rig |
| CN203701942U (en) * | 2013-12-25 | 2014-07-09 | 重庆科垒机械有限公司 | Wear resistant fixing mechanism at tail end of pressing oil cylinder for rotary drilling rig |
| CN204457415U (en) * | 2014-12-31 | 2015-07-08 | 北京市三一重机有限公司 | Rotary drilling rig and water booster system |
| CN104948632A (en) * | 2015-06-15 | 2015-09-30 | 株洲时代新材料科技股份有限公司 | Shock absorber |
-
2017
- 2017-12-27 CN CN201711445275.6A patent/CN108086926B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2153014A1 (en) * | 2007-05-18 | 2010-02-17 | Sandvik Mining and Construction Oy | Arrangement for employing drill steel centralizer travelling on feed beam of rock drill machine |
| CN202360669U (en) * | 2011-11-30 | 2012-08-01 | 北京市三一重机有限公司 | Cylinder bottom fixed damping device of pressurizing oil cylinder of rotary drilling rig |
| CN203701942U (en) * | 2013-12-25 | 2014-07-09 | 重庆科垒机械有限公司 | Wear resistant fixing mechanism at tail end of pressing oil cylinder for rotary drilling rig |
| CN204457415U (en) * | 2014-12-31 | 2015-07-08 | 北京市三一重机有限公司 | Rotary drilling rig and water booster system |
| CN104948632A (en) * | 2015-06-15 | 2015-09-30 | 株洲时代新材料科技股份有限公司 | Shock absorber |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108086926A (en) | 2018-05-29 |
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