CN209798872U

CN209798872U - Rock arm

Info

Publication number: CN209798872U
Application number: CN201920276014.4U
Authority: CN
Inventors: 吕波
Original assignee: Chengdu Zhongduo Intelligent Technology Co Ltd
Current assignee: Chengdu Zhongduo Intelligent Technology Co Ltd
Priority date: 2018-12-19
Filing date: 2019-03-05
Publication date: 2019-12-17
Anticipated expiration: 2029-03-05
Also published as: CN209798873U

Abstract

the utility model discloses a rock arm, which comprises a scarifier, wherein the top of the scarifier is provided with a connecting unit, and the connecting unit comprises a first hinge part and a second hinge part; the bucket rod is connected with the scarifier through the first hinge part; one end of the bucket rod oil cylinder is fixed on the bucket rod, and the other end of the bucket rod oil cylinder is connected with the scarifier through the second hinged part; when the arm cylinder acts, the scarifier rotates around the first hinge; by arranging the guard plate and the reinforcing sleeve, the abrasion of the female teeth and the cutter plate can be slowed down, and the service life of the scarifier is prolonged; auxiliary accessories such as a connecting plate of the scarifier and the like do not need to be replaced, the maintenance cost is low, and the replacement is convenient and quick; the pin joint of agitator cladding dipper head can effectively avoid the clearance department of agitator otic placode and dipper head curb plate to block foreign matter (like stone etc.), and to the deformation wearing and tearing, protection dipper head curb plate.

Description

Rock arm

Technical Field

the utility model belongs to the technical field of engineering machine tool equipment, especially, relate to a rock arm.

background

Rock breaking is a process often required in engineering construction and excavation operations; during construction, related equipment is needed to be adopted, and part of rock mass is separated from the matrix and is crushed, so that loading, unloading and transportation of engineering loading, unloading and transporting equipment (including transporting vehicles and loading and unloading vehicles) are facilitated. In the prior art, explosive blasting and mechanical crushing modes are mainly adopted for crushing large-volume rocks. Although the explosive blasting has high rock breaking efficiency, partial breaking effect is incomplete, and large rock blocks after blasting need secondary breaking, more importantly, because blasting has great influence on the surrounding environment, the explosive blasting is forbidden to be used in areas which may bring potential safety hazards to buildings, people and livestock and areas with high requirements on geological structures, and the application range is small. Mechanical crushing is widely adopted due to its high safety; the existing mechanical rock breaking mode mainly depends on a hydraulic breaking hammer, a high-frequency breaking hammer and the like carried by an excavator to carry out rock breaking operation, and in the actual rock breaking operation process, the hydraulic breaking hammer and the high-frequency breaking hammer have small acting force acting on rocks due to insufficient self gravity, so that the rock breaking speed is low, the work efficiency is low, and the construction progress is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a rock arm aims at solving the problem that above-mentioned existence.

The utility model discloses a realize like this, a rock arm, include:

The ripper top is provided with a connecting unit which comprises a first hinge part and a second hinge part;

The bucket rod is connected with the scarifier through the first hinge part;

One end of the bucket rod oil cylinder is fixed on the bucket rod, and the other end of the bucket rod oil cylinder is connected with the scarifier through the second hinged part; when the arm cylinder acts, the ripper rotates around the first hinge portion.

Further, the connecting unit comprises two ear plates arranged in parallel and a connecting plate arranged between the two ear plates; the first hinge is arranged on the left side of the ear plate, and the second hinge is arranged on the right side of the ear plate;

Furthermore, the first hinge part comprises a first pin shaft and a first pin hole formed in the ear plate, the second hinge part comprises a second pin shaft, a second pin hole formed in the ear plate and a limiting shaft sleeve arranged on the inner side of the ear plate, pin shaft locking seats are respectively arranged on the side edges of the first pin hole and the second pin hole, and locking convex blocks are respectively arranged on the first pin shaft head part and the second pin shaft head part.

Further, a bucket rod head BOSS and a bucket rod movable arm connecting BOSS are arranged on the bucket rod, and the connecting units are coated on two sides of the bucket rod and are connected with the bucket rod through the bucket rod head BOSS and the first hinge parts; the bucket rod is hinged with the movable arm through a bucket rod movable arm connecting BOSS, and the end parts of the movable arm are wrapped on two sides of the bucket rod.

Further, the scarifier comprises a cutting board and female teeth, the upper end of the cutting board is connected with the connecting unit, the lower end of the cutting board is connected with the female teeth, and reinforcing sleeves are sleeved on the female teeth; the guard plates are installed on two sides of the cutting board, the end portions of the guard plates are fixed to the connecting units, and reinforcing ribs are arranged between the guard plates and the connecting units.

Further, the cutting board comprises an upper cutting board and a lower cutting board, one end of the upper cutting board is fixed on the connecting unit, and the other end of the upper cutting board is provided with a first matching surface; female tooth is installed to lower cutter plate one end, and the lower cutter plate other end is provided with the second fitting surface with first fitting surface adaptation.

furthermore, a third pin hole is formed in each of the guard plate and the lower cutter plate, and when the upper cutter plate and the lower cutter plate are matched through the first matching surface and the second matching surface, the guard plate and the lower cutter plate are connected through a third pin shaft and the third pin hole.

Furthermore, the first matching surface is a concave surface, the second matching surface is a convex surface, and the guard plate is a triangular-like arc-shaped plate; the cutting board narrows down from last gradually, female tooth is sharp-pointed form and fixes the narrowest department at the cutting board, strengthen cover detachably suit on female tooth.

Further, the connecting unit still includes first limiting plate, and first limiting plate sets up between two otic placodes, the dipper tip is provided with the second limiting plate, works as when the dipper hydro-cylinder is in initial condition, first limiting plate with the butt of second limiting plate, the restriction the agitator centers on first articulated portion rotates.

Furthermore, the included angle between the connecting line of the two hinge points of the first hinge part and the second hinge part and the horizontal line is less than 35 degrees.

compared with the prior art, the beneficial effects of the utility model are that: by arranging the guard plate and the reinforcing sleeve, the abrasion of the female teeth and the cutter plate can be slowed down, and the service life of the scarifier is prolonged; meanwhile, the cutter plate is divided into the upper cutter plate and the lower cutter plate, when the cutter plate is damaged, only the lower cutter plate needs to be replaced, and accessory parts such as a connecting plate of the scarifier and the like do not need to be replaced, so that the maintenance cost is low, and the replacement is convenient and rapid; the scarifier coats the hinged point of the head of the bucket rod, so that foreign matters (such as stones) can be effectively prevented from being clamped at the gap between the lug plate of the scarifier and the side plate of the head of the bucket rod until deformation and abrasion are caused, and the side plate of the head of the bucket rod is protected; when the hard working condition is met, the design of the bucket rod is changed, the head part of the movable arm covers the hinged part of the bucket rod, the bucket rod can be replaced when damaged, and the movable arm oil cylinder and the movable arm can still be used continuously, so that the working efficiency is improved, and the cost is reduced; when the bucket rod oil cylinder is slowly retracted, the second limiting plate at the head of the bucket rod and the first limiting plate of the scarifier are firstly contacted in advance to achieve the limiting purpose, the oil cylinder is guaranteed to be retracted incompletely, a safety stroke is realized, and the oil cylinder is guaranteed to be effectively protected from impact force in a broken moment.

drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a perspective view of the present invention;

FIG. 3 is a schematic view of a bucket rod;

FIG. 4 is an exploded view of the ripper configuration;

Fig. 5 is a diagram of an embodiment of the present invention;

In the figure: 1-scarifier, 2-bucket rod, 3-bucket rod oil cylinder, 4-connecting unit, 5-first hinge part, 6-second hinge part, 7-lug plate, 8-connecting plate, 9-first pin shaft, 10-first pin hole, 11-second pin shaft, 12-second pin hole, 13-limiting shaft sleeve, 14-pin shaft locking seat, 15-locking lug, 16-bucket rod head BOSS, 17-bucket rod movable arm connecting BOSS, 18-movable arm, 19-cutter plate, 20-female tooth, 21-reinforcing sleeve, 22-guard plate, 23-reinforcing rib, 24-upper cutter plate, 25-lower cutter plate, 26-first matching surface, 27-second matching surface, 28-third pin shaft, 29-third pin hole, 30-first limiting plate, 31-second limiting plate.

Detailed Description

in order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. In addition, in the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

Referring to fig. 1-5, the present invention provides a technical solution: a rock arm comprising: ripper 1, dipper 2 and dipper hydro-cylinder 3.

The top of the ripper 1 is provided with a connecting unit 4, and the connecting unit 4 comprises a first hinge part 5 and a second hinge part 6; the bucket rod 2 is connected with the scarifier 1 through a first hinge part 5; one end of the bucket rod oil cylinder 3 is fixed on the bucket rod 2, and the other end of the bucket rod oil cylinder 3 is connected with the scarifier 1 through a second hinge part 6; when the arm cylinder 3 is actuated, the ripper 1 rotates about the first hinge portion 5.

In the actual working process, when the bucket rod oil cylinder 3 contracts, the scarifier 1 is driven to rotate outwards around the first hinge part 5, and meanwhile, the second hinge part 6 is enabled to be abutted against the end part of the bucket rod 2, and at the moment, the scarifier 1 and the bucket rod 2 are in an integrated state; when the bucket rod oil cylinder 3 extends out, the scarifier 1 is driven to rotate inwards around the first hinge part 5, and meanwhile, the second hinge part 6 is driven to deviate from the end part of the bucket rod 2, and at the moment, the scarifier 1 and the bucket rod 2 are in a separated state;

the utility model discloses a to 2 and 1 structural transformation of agitator, saved and swayed arm and I-shaped frame, the structure is simplified, and then improved assembly efficiency and reduced the processing cost, and saved and swayed the arm, reduced a biography power link, improved the transmission efficiency of the power of breaching, the contraction and the extension of arm cylinder 3 can cause agitator 1 and arm 2 to present an organic whole or separate two kinds of states, namely arm cylinder 3 contracts, second articulated portion 6 on agitator 1 can butt arm 2, become an organic whole with arm 2, improve the power of breaching, be favorable to exerting effects to the stereoplasm layer or deep layer; when the arm cylinder 3 is extended, the ripper 1 and the arm 2 are separated, and the range of motion of the ripper 1 is increased, which is advantageous for surface layer and soft layer breaking. In addition, when the breaker and the small arm are integrated, the breaking oil cylinder can be protected to a certain extent, and the service life of the breaking oil cylinder can be prolonged.

In the present embodiment, the connection unit 4 includes two ear plates 7 arranged in parallel, and a connection plate 8 arranged between the two ear plates 7; the first hinge part 5 is arranged at the left side of the ear plate 7, and the second hinge part 6 is arranged at the right side of the ear plate 7; the connecting unit 4 is formed by a pair of ear plates 7 arranged in parallel and a connecting plate 8 between the ear plates, and has simple structure and low cost.

The first hinge part 5 comprises a first pin shaft 9 and a first pin hole 10 arranged on the ear plate 7, the second hinge part 6 comprises a second pin shaft 11, a second pin hole 12 arranged on the ear plate 7 and a limiting shaft sleeve 13 arranged on the inner side of the ear plate 7, the side edges of the first pin hole 10 and the second pin hole 12 are respectively provided with a pin shaft locking seat 14, and the head parts of the first pin shaft 9 and the second pin shaft 11 are respectively provided with a locking lug 15;

the bucket rod oil cylinder 3 is provided with a cylinder body and a telescopic rod, the cylinder body is fixed on the bucket rod 2 through an oil cylinder seat, a lantern ring matched with the second pin shaft 11 is arranged at the end part of the telescopic rod, when the bucket rod oil cylinder 3 is connected with the scarifier 1 through the second hinge part 6, the lantern ring positioned on the telescopic rod is clamped between two limiting shaft sleeves 13 on the second hinge part 6, the second pin shaft 11 is inserted through a second pin hole 12, and a locking lug 15 at the head part of the pin shaft is clamped in a pin shaft locking seat 14 to complete the hinging between the bucket rod oil cylinder 3 and the scarifier 1;

the bucket rod 2 is provided with a bucket rod head BOSS16 and a bucket rod movable arm connecting BOSS17, the connecting unit 4 is covered on two sides of the bucket rod 2 and is connected with the bucket rod 2 through a bucket rod head BOSS16 and a first hinge part 5; the bucket rod 2 is hinged with a movable arm 18 through a bucket rod movable arm connecting BOSS17, and the end part of the movable arm 18 is covered on two sides of the bucket rod 2; when the ripper 1 is connected with the bucket rod 2, two lug plates 7 on the connecting unit 4 are coated on two sides of the end part of the bucket rod 2, a first pin hole 10 on each lug plate 7 is opposite to a bucket rod head BOSS16, and a first pin shaft 9 is inserted to complete the hinge connection between the bucket rod 2 and the ripper 1; the scarifier 1 covers the hinged point of the head of the bucket rod 2, so that foreign matters (such as stones) can be effectively prevented from being clamped at the gap between the lug plate 7 of the scarifier 1 and the side plate of the head of the bucket rod 2 until deformation and abrasion are caused, and the side plate of the head of the bucket rod 2 is protected;

When the working condition of over hardness is met, the design of the bucket rod 2 is changed, the head of the movable arm 18 covers the hinged position of the bucket rod 2, the bucket rod 2 can be replaced when damaged or under other conditions, and the bucket rod oil cylinder 3 and the movable arm 18 can still be used continuously, so that the working efficiency is improved, and the cost is reduced;

specifically, the ripper 1 comprises a cutting board 19 and a female tooth 20, the upper end of the cutting board 19 is connected with the connecting unit 4, the lower end of the cutting board 19 is connected with the female tooth 20, the connecting modes are preferably welding connection, the female tooth 20 is sleeved with a reinforcing sleeve 21, pin holes are formed in the female tooth 20 and the reinforcing sleeve 21 and connected through a pin, and the ripper is convenient to mount and dismount; two sides of the knife board 19 are provided with guard boards 22, the end parts of the guard boards 22 are fixed on the connecting unit 4, reinforcing ribs 23 are arranged between the guard boards 22 and the connecting unit 4, the knife board 19 comprises an upper knife board 24 and a lower knife board 25, one end of the upper knife board 24 is fixed on the connecting unit 4, and the other end of the upper knife board 24 is provided with a first matching surface 26; the female teeth 20 are installed at one end of the lower knife plate 25, the second matching surface 27 matched with the first matching surface 26 is arranged at the other end of the lower knife plate 25, third pin holes 29 are respectively formed in the guard plate 22 and the lower knife plate 25, and when the upper knife plate 24 and the lower knife plate 25 are matched through the first matching surface 26 and the second matching surface 27, the guard plate 22 and the lower knife plate 25 are connected through the third pin shaft 28 and the third pin holes 29;

When the main working components of the scarifier 1 are the cutting plate 19 and the female tooth 20, in a working state, the female tooth 20 and the cutting plate 19 are greatly worn and need to be replaced at any time, and by arranging the guard plate 22 and the reinforcing sleeve 21, the wear of the female tooth 20 and the cutting plate 19 can be reduced, so that the service life of the scarifier 1 is prolonged; meanwhile, the cutter plate 19 is split into the upper cutter plate 24 and the lower cutter plate 25, when the cutter plate 19 is damaged, only the lower cutter plate 25 needs to be replaced, and accessory accessories such as the connecting plate 8 of the scarifier 1 and the like do not need to be replaced, so that the maintenance cost is low, and the replacement is convenient and rapid;

Of course, the two matching surfaces may be curved surfaces, multi-section planes or arc surfaces, and as a preferred embodiment, in order to ensure the fixing effect, the first matching surface 26 is a concave surface, the second matching surface 27 is a convex surface, and the protection plate 22 is a triangle-like arc plate; cutting board 19 narrows down from last gradually, and female tooth 20 is sharp-pointed form and fixes the narrowest department at cutting board 19, and the suit of reinforcement cover 21 detachably is on female tooth 20, and reinforcement cover 21 is to the protective sheath that plays the guard action to female tooth 20 or to the reinforcement member of stereoplasm operating mode, can dismantle the change convenience simultaneously.

further, the connection unit 4 still includes first limiting plate 30, and first limiting plate 30 sets up between two otic placodes 7, and 2 tip of dipper is provided with second limiting plate 31, and when 2 hydro-cylinders of dipper are in initial condition, first limiting plate 30 and second limiting plate 31 butt restrict the agitator 1 and rotate around first articulated portion 5.

when the bucket rod oil cylinder 3 is slowly retracted, the second limiting plate 31 at the head of the bucket rod 2 and the first limiting plate 30 of the scarifier 1 are firstly contacted in advance to achieve the limiting purpose, so that the oil cylinder is ensured to be incompletely retracted and have a safe stroke, and the oil cylinder is effectively protected from impact force at the moment of crushing; because the second limiting plate 31 of 2 heads of dipper and the first limiting plate 30 of agitator 1 all have the finish machining, size and roughness meet the requirements, ensure that first limiting plate 30 and the effective contact atress of second limiting plate 31 are even.

Under the prerequisite of guaranteeing that the hydro-cylinder is withdrawed incompletely to have the safety stroke, make two limiting plates evenly contact, can make agitator 1 descend the breakage with faster at higher position, the great advantage of performance rock arm dead weight, the impact force and the excavation force of reinforcing excavation promote the rock breakage rate of excavator, behind the broken rock of 1 prong of agitator, 3 powerful releases direct action on agitator 1 of dipper hydro-cylinder, excavate the degree of depth and improve by a wide margin, excavate efficiency and obviously promote.

An included angle between a connecting line of two hinge points of the first hinge part 5 and the second hinge part 6 and a horizontal line is smaller than 35 degrees, the larger the angle alpha is, the smaller the COS alpha is, the smaller the downward moment is, the smaller the excavating force is, the included angle is smaller than 35 degrees, and the arm cylinder 3 is ensured to be capable of outputting enough excavating force.

The above description is only exemplary of the present invention and should not be construed as limiting the present invention, and any modifications, equivalents and improvements made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. A rock arm, comprising:

The bucket rod is connected with the scarifier through the first hinge part;

2. a rock arm according to claim 1, characterized in that: the connecting unit comprises two ear plates arranged in parallel and a connecting plate arranged between the two ear plates; the first hinge is disposed on a left side of the ear panel and the second hinge is disposed on a right side of the ear panel.

3. A rock arm according to claim 2, characterized in that: the first hinge part comprises a first pin shaft and a first pin hole formed in the ear plate, the second hinge part comprises a second pin shaft, a second pin hole formed in the ear plate and a limiting shaft sleeve arranged on the inner side of the ear plate, pin shaft locking seats are respectively arranged on the side edges of the first pin hole and the second pin hole, and locking convex blocks are respectively arranged on the first pin shaft head part and the second pin shaft head part.

4. A rock arm according to claim 1, characterized in that: the bucket rod is provided with a bucket rod head BOSS and a bucket rod movable arm connecting BOSS, and the connecting units are coated on two sides of the bucket rod and connected with the bucket rod through the bucket rod head BOSS and a first hinge part; the bucket rod is hinged with the movable arm through a bucket rod movable arm connecting BOSS, and the end parts of the movable arm are wrapped on two sides of the bucket rod.

5. a rock arm according to claim 1, characterized in that: the scarifier comprises a cutter plate and female teeth, the upper end of the cutter plate is connected with the connecting unit, the lower end of the cutter plate is connected with the female teeth, and reinforcing sleeves are sleeved on the female teeth; the guard plates are installed on two sides of the cutting board, the end portions of the guard plates are fixed to the connecting units, and reinforcing ribs are arranged between the guard plates and the connecting units.

6. a rock arm according to claim 5, characterized in that: the cutting board comprises an upper cutting board and a lower cutting board, one end of the upper cutting board is fixed on the connecting unit, and the other end of the upper cutting board is provided with a first matching surface; female tooth is installed to lower cutter plate one end, and the lower cutter plate other end is provided with the second fitting surface with first fitting surface adaptation.

7. A rock arm according to claim 6, characterized in that: and when the upper cutting board is matched with the lower cutting board through the first matching surface and the second matching surface, the guard board is connected with the lower cutting board through a third pin shaft and a third pin hole.

8. a rock arm according to claim 6, characterized in that: the first matching surface is a concave surface, the second matching surface is a convex surface, and the guard plate is a triangular-like arc-shaped plate; the cutting board narrows down from last gradually, female tooth is sharp-pointed form and fixes the narrowest department at the cutting board, strengthen cover detachably suit on female tooth.

9. A rock arm according to claim 1, characterized in that: the connecting unit further comprises a first limiting plate, the first limiting plate is arranged between the two lug plates, a second limiting plate is arranged at the end part of the bucket rod, and when the bucket rod oil cylinder is in an initial state, the first limiting plate is abutted to the second limiting plate to limit the scarifier to rotate around the first hinged portion.

10. a rock arm according to claim 1, characterized in that: the angle between the connecting line of the two hinge points of the first hinge part and the second hinge part and the horizontal line is less than 35 degrees.