CN212428614U

CN212428614U - Rock drilling arm

Info

Publication number: CN212428614U
Application number: CN202021343600.5U
Authority: CN
Inventors: 魏鹏程; 胡鹏填; 国清华; 黄世伟
Original assignee: Hunan Pengxiang Xingtong Automobile Co ltd
Current assignee: Hunan Pengxiang Xingtong Automobile Co ltd
Priority date: 2020-07-09
Filing date: 2020-07-09
Publication date: 2021-01-29
Anticipated expiration: 2030-07-09

Abstract

The utility model provides a rock drilling boom, including cantilever crane brace table, main arm swinging seat, main arm, flexible subassembly, swivelling joint spare, propelling beam assembly, every single move translation subassembly and can drive the main arm horizontal oscillation and maintain the unchangeable swing arm translation subassembly of propelling beam assembly horizontal angle simultaneously, every single move translation subassembly includes main arm every single move hydro-cylinder and stretches out the propelling beam every single move leveling hydro-cylinder that length changes and changes along with the length of stretching out of main arm every single move hydro-cylinder. The utility model discloses only with a main arm every single move hydro-cylinder in the well every single move translation subassembly, not only play the effect of lifting the arm, still play and impel roof beam leveling hydro-cylinder signal transmission's effect for impel the flexible direct linear relation that is of roof beam leveling hydro-cylinder and main arm every single move hydro-cylinder, the linkage effect is more direct, and can reduce holistic overall arrangement space, improve space utilization, make the drill jumbo more convenient when turning to.

Description

Rock drilling arm

Technical Field

The utility model relates to a rock drilling equipment field, more specifically relates to a rock drilling boom.

Background

In the tunnel, underground engineering and mining construction process, the blast hole drilling is required, but the actual rock drilling section is uneven, so that in order to ensure the best blasting effect, the rock drilling propulsion beam must always keep a certain angle with the center line of the tunnel during the drilling operation; the leveling of the rock drilling propelling beam is a key technology, when the height or the left and right positions of the main arm are adjusted, if no leveling or adjusting device is arranged below the rock drilling propelling beam, the rock drilling propelling beam at the top end cannot be kept parallel to the initial position, the drilling path cannot be parallel, and the blasting effect is finally influenced.

In the prior art, when a main arm of a drill boom moves in a pitching manner, a plurality of modes of leveling or adjusting back of a rock drilling propulsion beam are provided to ensure the translation of the rock drilling propulsion beam, but most of the drill booms are complex in structural layout, the translation structure increases the space of equipment, and the freedom degree of movement of the main arm is influenced when the main arm swings or pitches; for example, CN 205805428U discloses a drill boom translation mechanism of a tunneling drill carriage, which realizes translation during pitching of a push beam through cooperation of a boom lifting oil cylinder, a boom translation signal oil cylinder and a boom translation oil cylinder matched with the boom translation signal oil cylinder, and increases the boom translation signal oil cylinder on one side of the boom lifting oil cylinder, so that the layout space of the whole drill boom is increased, the freedom degree of movement of a main boom is also affected, and the rock drill carriage is limited to a certain extent when turning.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an overcome among the above-mentioned background art two hydro-cylinders of lift arm hydro-cylinder and lift arm translation signal hydro-cylinder have increased the overall arrangement space of whole drill boom, also can influence the degree of freedom of the activity of main arm, can receive the problem of certain restriction when the rock drill car turns, provide a rock drilling boom.

In order to solve the technical problem, the utility model discloses a technical scheme is: a rock drilling boom comprises a boom support platform, a boom swinging seat, a boom, a telescopic component, a rotary connecting piece, a propelling beam assembly, a pitching translational component and a boom translational component which can drive the boom to swing horizontally and maintain the horizontal angle of the propelling beam assembly unchanged, wherein one end of the boom swinging seat is vertically hinged (the hinged position can move in the transverse direction and cannot move in the longitudinal direction under the normal placing state of the rock drilling boom) on the boom support platform, the other end of the boom swinging seat is horizontally hinged (the hinged position can move in the longitudinal direction and cannot move in the transverse direction under the normal placing state of the rock drilling boom) with one end of the boom, the other end of the boom is connected with one end of the telescopic component, the propelling beam assembly is arranged on the rotary connecting piece, the rotary connecting piece is connected to the other end of the telescopic assembly, the pitching translation assembly comprises a main arm pitching oil cylinder and a propelling beam pitching leveling oil cylinder, the extending length of the propelling beam pitching oil cylinder changes along with the extending length of the main arm pitching oil cylinder, one end of the main arm pitching oil cylinder is horizontally hinged with the main arm swinging seat, and the other end of the main arm pitching oil cylinder is horizontally hinged to the lower end face of the main arm; one end of the propulsion beam pitching leveling oil cylinder is horizontally hinged with the telescopic assembly, and the other end of the propulsion beam pitching leveling oil cylinder is horizontally hinged with the rotary connecting piece.

Further, the main arm pitching oil cylinder comprises a cylinder barrel, a guide rod, a piston rod and a piston, wherein the piston rod is of a hollow structure, one end of the piston rod, which is positioned in the cylinder barrel, is connected with the piston, the guide rod is fixedly connected on the inner bottom wall of the cylinder barrel, the piston rod is parallel to the guide rod, the piston rod and the piston are sleeved on the guide rod, the inner wall of the piston is connected with the guide rod in a sliding and sealing way, the outer wall of the piston is connected with the inner wall of the cylinder barrel in a sliding and sealing way, the piston divides the interior of the cylinder barrel into a first cavity and a second cavity, the guide rod and the interior of the piston rod form a third cavity, the first cavity is connected with a first oil way, the second cavity is connected with a second oil way, the third cavity is connected with a third oil way, and the first cavity, the second cavity and the third cavity are not communicated with each other; the propulsion beam pitching leveling cylinder comprises a rodless cavity and a rod cavity.

As a preferable scheme, the walking beam pitching leveling cylinder and the main arm pitching cylinder are located on the same side of the main arm, one end of the third oil path is connected with the rodless cavity, and the other end of the third oil path is connected with the third cavity. Since the telescopic assembly and the main arm are in the same straight line and the straight line where the main arm is located is taken as a dividing line, in the embodiment, the main arm pitching cylinder is generally located below the dividing line, and the propulsion beam pitching leveling cylinder is also located below the dividing line.

As another preferable scheme, the walking beam pitching leveling cylinder and the main arm pitching cylinder are respectively located on one side of the main arm opposite to each other up and down, one end of the third oil path is connected with the rod cavity, and the other end of the third oil path is connected with the third cavity. Since the telescopic assembly and the main arm are in the same straight line and the straight line where the main arm is located is taken as a boundary, in the embodiment, the main arm pitching cylinder is generally located below the boundary, and the propulsion beam pitching leveling cylinder is located above the boundary.

Furthermore, a first connecting lug is arranged at one end of the bottom of a cylinder barrel of the main arm pitching oil cylinder, a second connecting lug is arranged at one end, far away from the first connecting lug, of the piston rod, the first connecting lug is horizontally hinged with the main arm swinging seat, and the second connecting lug is horizontally hinged with the lower end face of the main arm.

Furthermore, the outer wall of the guide rod is connected with the inner wall of the piston rod in a sliding and sealing mode, a distance is reserved between one end, close to the second connecting lug, of the guide rod and one end, close to the second connecting lug, of the inner cavity of the piston rod all the time to form the third cavity, and the third oil path penetrates through the guide rod and is communicated with the third cavity.

Furthermore, the swing arm translation component comprises a main arm swing oil cylinder, a swing oil cylinder swing seat, a main arm swing follow-up oil cylinder and a push beam swing leveling oil cylinder;

one end of the swing oil cylinder swing seat is vertically hinged to the arm support supporting table, one end of the main arm swing oil cylinder is horizontally hinged to the other end of the swing oil cylinder swing seat, and the other end of the main arm swing oil cylinder is horizontally hinged to one side surface of the main arm;

one end of the main arm swinging follow-up oil cylinder is vertically hinged on the arm support supporting table, and the other end of the main arm swinging follow-up oil cylinder is vertically hinged with the main arm swinging seat;

one end of the push beam swinging leveling oil cylinder is vertically hinged on one side surface of the telescopic assembly, and the other end of the push beam swinging leveling oil cylinder is vertically hinged with the rotary connecting piece;

the main arm swing servo oil cylinder is connected with the propelling beam swing leveling oil cylinder in an oil way.

Furthermore, the telescopic assembly comprises a telescopic oil cylinder, a telescopic arm and a bidirectional hinged piece, the other end of the main arm is of an open hollow structure, the telescopic oil cylinder is fixed in the hollow structure, a piston rod of the telescopic oil cylinder is connected with the telescopic arm, one end of the telescopic arm is sleeved in the hollow structure, the other end of the telescopic arm is horizontally hinged with one end of the bidirectional hinged piece, and the other end of the bidirectional hinged piece is vertically hinged with the rotary connecting piece;

a cylinder barrel of the propulsion beam pitching leveling cylinder is connected to the lower end face of the telescopic arm, and a piston rod of the propulsion beam pitching leveling cylinder is horizontally hinged to the rotary connecting piece;

the cylinder barrel of the push beam swinging leveling cylinder is connected to the side face of the telescopic arm, and the piston rod of the push beam swinging leveling cylinder is vertically hinged to the rotary connecting piece.

Furthermore, the feed beam assembly includes intermediate support, feed beam, rock drilling mechanism and feed beam every single move hydro-cylinder, the one end of intermediate support is connected swivel connected coupler keeps away from the one end of flexible subassembly, the other end with feed beam middle part level is articulated, rock drilling mechanism locates on the feed beam, feed beam every single move hydro-cylinder with the intermediate support level is articulated, feed beam every single move hydro-cylinder's piston rod with the feed beam is close to the one end level of cantilever crane brace table is articulated.

Further, the propulsion beam includes propulsion beam main part, the flexible hydro-cylinder of propulsion beam, propulsion beam mounting bracket and installation slide, the intermediate strut with propulsion beam mounting bracket fixed connection, the cylinder of the flexible hydro-cylinder of propulsion beam is fixed on the propulsion beam mounting bracket, the piston rod of the flexible hydro-cylinder of propulsion beam is connected the installation slide, the propulsion beam main part with propulsion beam mounting bracket sliding connection, the propulsion beam main part fixed mounting be in on the installation slide, rock drilling mechanism locates in the propulsion beam main part.

Preferably, the main arm has a rectangular tube structure.

Compared with the prior art, the beneficial effects are:

1. the utility model discloses only with a main arm every single move hydro-cylinder among the well every single move translation subassembly, not only play the effect that the pitching motion was done to the drive main arm, still play and impel roof beam leveling hydro-cylinder signal transmission's effect, make the flexible direct linear relation that is with main arm every single move hydro-cylinder of impel roof beam leveling hydro-cylinder, the linkage effect is more direct, and can reduce holistic overall arrangement space, improve space utilization, make whole rock drilling boom structure compacter, make the rock drilling platform truck more convenient when turning to, be favorable to locating on the rock drilling truck.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a schematic diagram of the connection structure of the middle main arm swing cylinder and the main arm swing follow-up cylinder of the present invention.

Fig. 3 is a schematic view of the connection structure of the pitch cylinder of the middle main arm of the present invention.

Fig. 4 is a schematic view of the connection structure of the middle telescopic arm of the present invention.

Fig. 5 is an internal structure schematic diagram of the pitch cylinder of the middle main arm of the present invention.

Fig. 6 is a schematic diagram of the oil path connection structure between the pitch cylinder of the middle main arm and the pitch leveling cylinder of the push beam.

Detailed Description

The drawings are for illustrative purposes only and are not to be construed as limiting the patent; for the purpose of better illustrating the embodiments, certain features of the drawings may be omitted, enlarged or reduced, and do not represent the size of an actual product; it will be understood by those skilled in the art that certain well-known structures in the drawings and descriptions thereof may be omitted. The positional relationships depicted in the drawings are for illustrative purposes only and are not to be construed as limiting the present patent.

The same or similar reference numerals in the drawings of the embodiments of the present invention correspond to the same or similar parts; in the description of the present invention, it should be understood that if there are the terms "upper", "lower", "left", "right", "long", "short", etc. indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limiting the present patent, and those skilled in the art will understand the specific meaning of the terms according to their specific circumstances.

It should be particularly noted that, in order to clearly distinguish the pitching motion and the left-right swinging motion of the structure, the "horizontal hinge" and the "vertical hinge" in this embodiment are based on simplified descriptions of the rock drilling boom in normal operation states, and the "horizontal hinge" means that the two connecting ends are hinged through a horizontal hinge shaft parallel to the horizontal plane, so that the two connecting ends can only rotate relatively in the vertical direction after being hinged horizontally, and cannot move in the horizontal direction; the vertical hinge joint means that the two connecting ends are hinged through a vertical hinge shaft perpendicular to the horizontal plane, so that the two connecting ends can only rotate relatively in the horizontal direction after being vertically hinged and cannot move in the vertical direction.

The technical solution of the present invention is further described in detail by the following specific embodiments in combination with the accompanying drawings:

example 1

As shown in fig. 1 and 2, a rock drilling boom comprises a boom support platform 1, a boom swing seat 2, a boom 5, a telescopic component, a rotary connector 11, a push beam assembly 12, a pitching translational component and a swing arm translational component capable of driving the boom 5 to swing horizontally and maintaining the horizontal angle of the push beam assembly 12 unchanged, wherein the boom 5 is in a rectangular tubular structure, one end of the boom swing seat 2 is vertically hinged (here, the so-called vertical hinge is hinged through a vertical hinge shaft, so that in a normal placing state of the rock drilling boom, the hinge position can move in a transverse direction and cannot move in a longitudinal direction) on the boom support platform 1, the other end of the boom swing seat is horizontally hinged with one end of the boom 5 (here, the so-called horizontal hinge is hinged through a horizontal hinge shaft, so that in a normal placing state of the rock drilling boom, the hinge position can move in a longitudinal direction, the other end of the main arm 5 is connected with one end of the telescopic component, the propelling beam assembly 12 is arranged on the rotary connecting piece 11, the rotary connecting piece 11 is connected with the other end of the telescopic component, the pitching translational component comprises a main arm pitching oil cylinder 6 and a propelling beam pitching leveling oil cylinder 10 with the extending length changing along with the extending length of the main arm pitching oil cylinder 6, one end of the main arm pitching oil cylinder 6 is horizontally hinged with the main arm swinging seat 2, and the other end of the main arm pitching oil cylinder 6 is horizontally hinged on the lower end surface of the main arm 5; one end of the propulsion beam pitching leveling cylinder 10 is horizontally hinged with the telescopic assembly, and the other end of the propulsion beam pitching leveling cylinder is horizontally hinged with the rotary connecting piece 11. Taking fig. 2 to 4 as an example, the two connecting ends are vertically hinged, that is, hinged by a vertical hinge shaft 100; the horizontal hinge is that two connecting ends are hinged through a horizontal hinge shaft 200.

As shown in fig. 5, the main arm pitch cylinder 6 includes a cylinder 601, a guide rod 604, a piston rod 602 and a piston 603, the piston rod 602 is a hollow structure, the guide rod 604 is connected to the inner wall of the bottom of the cylinder 601, one end of the piston rod 602 located in the cylinder 601 is sleeved on the guide rod 604, the piston 603 is sleeved on the guide rod 604, the inner wall of the piston 603 is connected to the guide rod 604 in a sliding and sealing manner, the outer wall of the piston 603 is connected to the inner wall of the cylinder 601 in a sliding and sealing manner, the piston 603 divides the inside of the cylinder 601 into a first cavity 607 and a second cavity 608, the guide rod 604 and the inside of the piston rod 602 form a third cavity 609, the first cavity 607 is connected to a first oil path, the second cavity 608 is connected to a second oil path, and the third cavity 609 is connected to a third oil path 610, the first cavity 607, the second cavity 608 and the third cavity 609 are not communicated with each other; a first connecting lug 605 is arranged at one end of the bottom of a cylinder 601 of the main arm pitching oil cylinder 6, a second connecting lug 606 is arranged at one end, far away from the first connecting lug 605, of the piston rod 602, the first connecting lug 605 is horizontally hinged with the main arm swinging seat 2, and the second connecting lug 606 is horizontally hinged with the lower end face of the main arm 5; the outer wall of the guide rod 604 is connected with the inner wall of the piston rod 602 in a sliding and sealing manner, a distance is always reserved between one end, close to the second connecting lug 606, of the guide rod 604 and one end, close to the second connecting lug 606, of the inner cavity of the piston rod 602 to form the third cavity 609, and the third oil path 610 penetrates through the guide rod 604 and is communicated with the third cavity 609. In this embodiment, one end of the guide rod 604 is connected to the inner wall of the bottom of the cylinder 601, the other end of the guide rod is inserted into the hollow structure of the piston 602, and a certain distance always exists between the guide rod and the bottom of the inner cavity of the piston 602, the distance is the position of the third cavity 609, and an exhaust port 611 is further connected in the third cavity 609; when the piston rod 602 extends out, the distance between the cavity bottom of the inner cavity of the piston rod 602 and the rod head of the guide rod 604 becomes larger and larger, and the volume of the third cavity 609 becomes larger and larger; conversely, the volume of the third cavity 609 becomes smaller and smaller.

In this embodiment, the propulsion beam pitch leveling cylinder 10 includes a rodless cavity and a rod cavity; the propulsion beam pitching leveling cylinder 10 and the main arm pitching cylinder 6 are respectively positioned on the same side of the straight line where the main arm 5 is positioned, and as the telescopic component and the main arm 5 are positioned on the same straight line and the straight line where the main arm 5 is positioned is taken as a boundary line, in the embodiment, the main arm pitching cylinder 6 is positioned below the boundary line, and the propulsion beam pitching leveling cylinder 10 is also positioned below the boundary line; when one end of the third oil path 610 is connected with the rodless cavity, the other end of the third oil path is connected with the third cavity 609, and the main arm pitching oil cylinder 6 extends out, the propulsion beam pitching leveling oil cylinder 10 retracts to level the angle; the propulsion beam pitching leveling cylinder 10 is a commonly used two-cavity cylinder, the extension length of a piston rod of the propulsion beam pitching leveling cylinder 10 is in a linear relation with the extension length of a piston rod 602 of the main arm pitching cylinder 6, and the propulsion beam pitching leveling cylinder 10 directly drives the pitching leveling of the propulsion beam assembly 12 on the rotary connecting piece 11 to realize the translation of the propulsion beam assembly 12 so as to keep the angle of the propulsion beam assembly and the horizontal plane unchanged; the specific working principle is as follows: when oil enters the first cavity 607, the piston rod 602 of the main arm pitching cylinder 6 extends out, the space between the end of the guide rod 604 and the bottom wall of the inner cavity of the piston rod 602 is increased due to the fixation of the guide rod 604, so that the volume of the third cavity 609 is increased, and the oil in the rodless cavity is pressed into the third cavity 609 according to the principle that the volume of the oil is not changed due to the interconnection of the third cavity 609 and the rodless cavity oil path, so that the piston rod of the push beam pitching leveling cylinder 10 retracts; the linear relationship between the extension length of the piston rod of the pitching leveling cylinder 10 of the propelling beam and the extension length of the piston rod 602 of the main arm pitching cylinder 6 satisfies that the main arm pitching angle is equal to and opposite to the pitching angle of the propelling beam assembly 12, that is, when the main arm 5 swings upward by an angle a, the propelling beam assembly 12 correspondingly swings downward by an angle a, so that the angle of the propelling beam assembly 12 with the horizontal plane is maintained.

As shown in fig. 1 and 2, the swing arm translation assembly includes a main arm swing cylinder 3, a swing cylinder swing seat 30, a main arm swing servo cylinder 4 and a push beam swing leveling cylinder 9; one end of the swing oil cylinder swing seat 30 is vertically hinged to the arm support supporting table 1, one end of the main arm swing oil cylinder 3 is horizontally hinged to the other end of the swing oil cylinder swing seat 30, and the other end of the main arm swing oil cylinder 3 is horizontally hinged to one side face of the main arm 5; one end of the main arm swinging follow-up oil cylinder 4 is vertically hinged on the arm support supporting table 1, and the other end of the main arm swinging follow-up oil cylinder is vertically hinged with the main arm swinging seat 2; one end of the push beam swinging leveling cylinder 9 is vertically hinged on one side surface of the telescopic assembly, and the other end of the push beam swinging leveling cylinder is vertically hinged with the rotary connecting piece 11; the main arm swinging follow-up oil cylinder 4 is connected with the propelling beam swinging leveling oil cylinder 9 in an oil way. The swing arm translation component in the embodiment belongs to the prior art, and has the main function that when the main arm 5 swings left and right, the propelling beam swinging and leveling oil cylinder 9 drives the propelling beam assembly 12 to be adjusted back by a certain angle due to the linear relation between the stretching of the propelling beam swinging and leveling oil cylinder 9 and the stretching of the main arm swinging oil cylinder 3, so that the propelling beam assembly 12 moves in parallel in the same horizontal plane without changing the horizontal direction of drilling.

As shown in fig. 1 and 4, the telescopic assembly includes a telescopic cylinder 7, a telescopic arm 8, and a bidirectional hinge, the other end of the main arm 5 is an open hollow structure, the telescopic cylinder 7 is fixed in the hollow structure, a piston rod of the telescopic cylinder 7 is connected to the telescopic arm 8, one end of the telescopic arm 8 is sleeved in the hollow structure, the other end is horizontally hinged to one end of the bidirectional hinge, and the other end of the bidirectional hinge is vertically hinged to the rotary connector 11; the cylinder barrel of the propulsion beam pitching leveling cylinder 10 is connected to the lower end face of the telescopic arm 8, and the piston rod of the propulsion beam pitching leveling cylinder 10 is horizontally hinged to the rotary connecting piece 11; the cylinder barrel of the push beam swinging leveling cylinder 9 is connected to the side face of the telescopic arm 8, and the piston rod of the push beam swinging leveling cylinder 9 is vertically hinged to the rotary connecting piece 11. The telescopic component in the embodiment also belongs to the prior art, and mainly drives the rotary connecting piece 11 to move back and forth through the telescopic action of the telescopic arm 8, so as to drive the push beam assembly 12 to move back and forth; the propelling beam pitching leveling cylinder 10 and the propelling beam swinging leveling cylinder 9 and the telescopic arm 8 move back and forth simultaneously, so that the front and back, left and right and pitching movement of the propelling beam assembly 12 are not influenced by each other.

In this embodiment, the propulsion beam assembly 12 includes a middle bracket 13, a propulsion beam 15, a rock drilling mechanism 16 and a propulsion beam pitch cylinder 14, one end of the middle bracket 13 is connected to one end of the rotary connecting member 11 away from the telescopic component, the other end is horizontally hinged to the middle of the propulsion beam 15, the rock drilling mechanism 16 is disposed on the propulsion beam 15, a cylinder of the propulsion beam pitch cylinder 14 is horizontally hinged to the middle bracket 13, and a piston rod of the propulsion beam pitch cylinder 14 is horizontally hinged to one end of the propulsion beam close to the arm support platform 1; the feed beam 15 includes feed beam main part 17, feed beam telescopic cylinder 19, feed beam mounting bracket 18 and installation slide 20, middle support 13 with feed beam mounting bracket 18 fixed connection, feed beam telescopic cylinder 19's cylinder is fixed on feed beam mounting bracket 18, feed beam telescopic cylinder 19's piston rod is connected installation slide 20, feed beam main part 17 with feed beam mounting bracket 18 sliding connection, feed beam main part 17 fixed mounting be in on the installation slide 20, rock drilling mechanism 16 locates on the feed beam main part 17. The structure of the push beam assembly 12 in this embodiment is the same as that of the prior art, when the main arm 5 is not moved, the push beam pitching cylinder 14 can directly drive the push beam to pitch, so as to realize the fine adjustment of the position of the push beam 15, and the rock drilling mechanism 16 in the push beam assembly 12 is the main structure of the drill hole and mainly comprises a drill rod and a drill rod pushing mechanism for driving the drill rod to drill.

As shown in fig. 6, the main arm pitch cylinder 6 and the feed beam pitch cylinder 14 are connected by an oil path control system, the oil path control system includes a main oil tank 102, a first control valve 103, and a second control valve 104, and one end of the first control valve 103 and one end of the second control valve 104 are connected to the main oil tank 102, respectively; the other end of the first control valve 103 is connected with a first oil path a with the first cavity 607, and the other end of the first control valve 103 is also connected with a second oil path b with the second cavity 608; the other end of the second control valve 104 is connected with the fourth cavity 21 through a fourth oil path d; the other end of the second control valve 104 is also connected with a fifth oil path e with the fifth cavity 22; the third cavity 609 is communicated with a fourth oil path d through a third oil path 610; the first oil way a is communicated with the fifth oil way e through a sixth oil way f; the sixth oil path f is provided with a check valve 108, the outlet side of the check valve 108 on the sixth oil path f is also connected with a first oil return port T1 through a seventh oil path g, and the seventh oil path g is provided with a hydraulic control check valve 109.

In this embodiment, the first control valve 103 and the second control valve 104 both adopt O-type directional valves; when the O-shaped reversing valve is in the middle position, the two corresponding oil ways are closed and are not communicated with each other, so that the main arm pitching oil cylinder 6 and the propulsion beam pitching leveling oil cylinder 10 can be fixed at the operation position and are still, and can not move greatly even under the action of external force; the first oil path a and the second oil path b are provided with a first balance valve 105; one ends of the third oil path 610 and the fourth oil path d, which are close to the propulsion beam pitch leveling cylinder 10, are respectively connected with a second oil return port T2 through an overflow valve 107, a second balance valve 106 is commonly arranged on the fourth oil path d and the fifth oil path e, and the third oil path 610 and the fourth oil path d enter the second balance valve 106 after being communicated. The first balance valve 105 and the second balance valve 106 are both two-way balance valves, and a sequence valve and a one-way valve are arranged on each oil path to control the liquid flow in two directions (the first balance valve 15 and the second balance valve 16 can also be replaced by hydraulic locks, and the same effect can be achieved); the first balance valve 105 enables the oil outlet speeds of the first oil path a and the second oil path b to be more uniform, and the action of the main arm pitching oil cylinder 6 is more stable; the second balance valve 106 makes the oil outlet speeds of the fourth oil path d and the fifth oil path e more uniform, so that the action of the main arm pitching cylinder 6 is more stable. The relief valve 107 functions as: when the walking beam pitch leveling cylinder 10 acts independently, if the piston rod of the walking beam pitch leveling cylinder 10 extends or retracts completely, the two cylinders are linked, and the oil in the fourth cavity 21 or the fifth cavity 22 of the walking beam pitch leveling cylinder 10 can flow out of the overflow valve 107 to the second oil return port T2, so that the walking beam pitch leveling cylinder 10 is prevented from being exploded.

The main working principle of this embodiment is: the rock drilling boom is used on a rock drilling vehicle, and the expansion and contraction of each oil cylinder are controlled through an oil way control system and an electric control system, so that the change of the hole drilling position is realized; when the left and right positions of the hole sites need to be adjusted, the main arm 5 is driven to swing left and right through the extension and retraction of the main arm swing oil cylinder 3, so that the left and right positions of the propelling beam assembly 12 are driven to change, and the propelling beam swing leveling oil cylinder 9 can drive the angle of the propelling beam assembly 12 to be adjusted back and parallel to the initial position; the left-right swinging belongs to the prior art and needs no repeated description. When the up-down position of a hole drilling position needs to be adjusted, the stretching of the main arm pitching cylinder 6 needs to be controlled, high-pressure oil is pumped into the first cavity 607 by adjusting the first control valve 103, the piston rod 602 of the main arm pitching cylinder 6 extends out, the main arm 5 is lifted, and the position of the push beam assembly 12 rises; meanwhile, the volume of the third cavity 609 is increased, because the main arm pitching oil cylinder 6 is a three-cavity oil cylinder, and the third cavity 609 is interconnected with a rodless cavity oil path of the propulsion beam pitching leveling oil cylinder 10, oil in the rodless cavity of the propulsion beam pitching leveling oil cylinder 10 flows into the third cavity, a piston rod of the propulsion beam pitching leveling oil cylinder 10 retracts, and the drilling direction is not changed; similarly, when the piston rod 602 of the main arm pitch cylinder 6 retracts, the piston rod of the push beam pitch leveling cylinder 10 extends out and is adjusted upward by a certain angle. Thus, the feed beam pitch leveling cylinder 10 drives the feed beam assembly 12 to adjust back by the same angle, so that the feed beam assembly 12 moves in parallel in the vertical plane. In the embodiment, only one main arm pitching oil cylinder 6 is used in the pitching translation assembly, so that the arm lifting function is achieved, and the signal transmission function with the propulsion beam leveling oil cylinder 10 is achieved, the propulsion beam leveling oil cylinder 10 and the main arm pitching oil cylinder 6 are in a direct linear relation, the linkage function is more direct, the overall layout space can be reduced, the space utilization rate is improved, the whole rock drilling arm is more compact in structure, and the rock drilling arm can be more conveniently arranged on a rock drilling truck.

Example 2

This example is similar to example 1, except that:

in this embodiment, the walking beam pitching leveling cylinder 10 and the main arm pitching cylinder 6 are respectively located at one side of the main arm 5 opposite to each other up and down, one end of the third oil path 610 is connected to the rod cavity, and the other end is connected to the third cavity 609; in the embodiment, because the telescopic assembly and the main arm 5 are in the same straight line, and the straight line where the main arm 5 is located is taken as a dividing line, the main arm pitching cylinder 6 is located below the dividing line, the cylinder barrel of the propulsion beam pitching leveling cylinder 10 is connected above the dividing line, and when the main arm pitching cylinder 6 extends out, the propulsion beam pitching leveling cylinder 10 also extends out to level the angle; when the main arm pitch cylinder 6 retracts, the propel beam pitch leveling cylinder 10 also retracts to level the angle.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. 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. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A rock drilling boom comprises a boom support platform (1), a boom swing seat (2), a boom (5), a telescopic component, a rotary connecting piece (11), a propelling beam assembly (12), a pitching translation component and a swinging arm translation component capable of driving the boom (5) to swing horizontally and maintaining the horizontal angle of the propelling beam assembly (12) unchanged, wherein one end of the boom swing seat (2) is vertically hinged to the boom support platform (1), the other end of the boom swing seat is horizontally hinged to one end of the boom (5), the other end of the boom (5) is connected with one end of the telescopic component, the propelling beam assembly (12) is arranged on the rotary connecting piece (11), the rotary connecting piece (11) is connected to the other end of the telescopic component, and the rock drilling boom is characterized in that the pitching translation component comprises a boom pitching oil cylinder (6) and a pitching beam adjusting and propelling beam with the extension length changed along with the extension length of the boom oil cylinder (6) One end of the main arm pitching oil cylinder (6) is horizontally hinged with the main arm swinging seat (2), and the other end of the main arm pitching oil cylinder is horizontally hinged on the lower end surface of the main arm (5); one end of the propulsion beam pitching and leveling oil cylinder (10) is horizontally hinged with the telescopic assembly, and the other end of the propulsion beam pitching and leveling oil cylinder is horizontally hinged with the rotary connecting piece (11).

2. The rock drilling boom as claimed in claim 1, wherein the main arm pitch cylinder (6) comprises a cylinder (601), a guide rod (604), a piston rod (602) and a piston (603), the piston rod (602) is of a hollow structure, one end of the guide rod (604) is fixed on the inner bottom wall of the cylinder (601), the guide rod (604) is arranged in parallel with the piston rod (602), one end of the piston rod (602) located in the cylinder (601) is connected with the piston (603), the piston rod (602) and the piston (603) are both sleeved on the guide rod (604), the inner wall of the piston (603) is connected with the guide rod (604) in a sliding and sealing manner, the outer wall of the piston (603) is connected with the inner wall of the cylinder (601) in a sliding and sealing manner, the piston (603) divides the inside of the cylinder (601) into a first cavity (607) and a second cavity (608), a third cavity (609) is formed inside the guide rod (604) and the piston rod (602), the first cavity (607) is connected with a first oil path, the second cavity (608) is connected with a second oil path, the third cavity (609) is connected with a third oil path (610), and the first cavity (607), the second cavity (608) and the third cavity (609) are not communicated with each other; the propulsion beam pitching and leveling cylinder (10) comprises a rodless cavity and a rod cavity.

3. A rock drilling boom as claimed in claim 2, characterized in that the walking beam pitch leveling cylinder (10) is located on the same side of the main boom (5) as the main boom pitch cylinder (6), and the third oil line (610) is connected to the rodless cavity at one end and to the third cavity (609) at the other end.

4. A rock drilling boom according to claim 2, characterized in that the walking beam pitch leveling cylinder (10) and the main boom pitch cylinder (6) are located on opposite sides of the main boom (5) from top to bottom, respectively, and that the third oil line (610) is connected to the rod chamber at one end and to the third chamber (609) at the other end.

5. A rock drilling boom as claimed in claim 3, characterized in that the outer wall of the end of the bottom of the cylinder (601) of the main boom pitch cylinder (6) is provided with a first connecting lug (605), the end of the piston rod (602) far away from the first connecting lug (605) is provided with a second connecting lug (606), the first connecting lug (605) is horizontally hinged with the main boom swing seat (2), and the second connecting lug (606) is horizontally hinged with the lower end surface of the main boom (5).

6. A rock drilling boom according to claim 5, characterized in that the outer wall of the guide rod (604) is in sliding sealing connection with the inner wall of the piston rod (602), the end of the guide rod (604) near the second engaging lug (606) is always spaced from the end of the inner cavity of the piston rod (602) near the second engaging lug (606) to form the third cavity (609), and the third oil passage (610) passes through the guide rod (604) and is communicated with the third cavity (609).

7. A rock drilling boom as claimed in claim 1, characterized in that the swing arm translation assembly comprises a main boom swing cylinder (3), a swing cylinder swing seat (30), a main boom swing slave cylinder (4) and a push beam swing leveling cylinder (9);

one end of the swing oil cylinder swing seat (30) is vertically hinged to the arm support supporting table (1), one end of the main arm swing oil cylinder (3) is horizontally hinged to the other end of the swing oil cylinder swing seat (30), and the other end of the main arm swing oil cylinder (3) is horizontally hinged to one side surface of the main arm (5);

one end of the main arm swinging follow-up oil cylinder (4) is vertically hinged on the arm support supporting table (1), and the other end of the main arm swinging follow-up oil cylinder is vertically hinged with the main arm swinging seat (2);

one end of the push beam swinging leveling cylinder (9) is vertically hinged on one side surface of the telescopic assembly, and the other end of the push beam swinging leveling cylinder is vertically hinged with the rotary connecting piece (11);

the main arm swinging follow-up oil cylinder (4) is connected with the propelling beam swinging leveling oil cylinder (9) in an oil way in an interconnecting mode.

8. A rock drilling boom according to claim 7, characterized in that the telescopic assembly comprises a telescopic cylinder (7), a telescopic boom (8) and a two-way hinge joint, the other end of the main boom (5) is an open hollow structure, the telescopic cylinder (7) is fixed in the hollow structure, a piston rod of the telescopic cylinder (7) is connected with the telescopic boom (8), one end of the telescopic boom (8) is sleeved in the hollow structure, the other end is horizontally hinged with one end of the two-way hinge joint, and the other end of the two-way hinge joint is vertically hinged with the rotary joint (11);

a cylinder barrel of the propulsion beam pitching leveling cylinder (10) is connected to the lower end face of the telescopic arm (8), and a piston rod of the propulsion beam pitching leveling cylinder (10) is horizontally hinged with the rotary connecting piece (11);

the cylinder barrel of the push beam swinging and leveling oil cylinder (9) is connected to the side face of the telescopic arm (8), and the piston rod of the push beam swinging and leveling oil cylinder (9) is vertically hinged to the rotary connecting piece (11).

9. The rock drilling boom as claimed in claim 1, characterized in that the push beam assembly (12) comprises a middle bracket (13), a push beam (15), a rock drilling mechanism (16) and a push beam pitch cylinder (14), one end of the middle bracket (13) is connected with the rotary connecting piece (11) away from one end of the telescopic assembly, the other end is horizontally hinged with the middle of the push beam (15), the rock drilling mechanism (16) is arranged on the push beam (15), a cylinder barrel of the push beam pitch cylinder (14) is horizontally hinged with the middle bracket (13), and a piston rod of the push beam pitch cylinder (14) is horizontally hinged with one end of the push beam close to the boom support (1).

10. Rock drilling boom according to claim 9, characterized in that the feed beam (15) comprises a feed beam body (17), a feed beam telescopic cylinder (19), a feed beam mounting frame (18) and a mounting skid (20), the intermediate bracket (13) is horizontally hinged to both sides of the middle of the feed beam mounting frame (18), the piston rod of the feed beam pitch cylinder (14) is horizontally hinged to one end of the feed beam mounting frame (18) close to the boom support platform (1), the cylinder barrel of the feed beam telescopic cylinder (19) is fixed to the feed beam mounting frame (18), the piston rod of the feed beam telescopic cylinder (19) is connected to the mounting skid (20), the feed beam body (17) is slidably connected to the feed beam mounting frame (18), the feed beam body (17) is fixedly mounted to the mounting skid (20), the rock drilling mechanism (16) is arranged on the push beam main body (17).