CN209779731U - Excavator arm with freely-converted front shovel and back shovel - Google Patents
Excavator arm with freely-converted front shovel and back shovel Download PDFInfo
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- CN209779731U CN209779731U CN201920161623.5U CN201920161623U CN209779731U CN 209779731 U CN209779731 U CN 209779731U CN 201920161623 U CN201920161623 U CN 201920161623U CN 209779731 U CN209779731 U CN 209779731U
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Abstract
The utility model discloses an excavator horn of free conversion of face shovel back shovel relates to excavator technical field. The utility model comprises a big arm, a small arm oil cylinder, a scarifier and a bucket oil cylinder, wherein the scarifier comprises a hinge shaft for hinging the scarifier and the small arm, a front shovel fixedly connected at one side of the hinge shaft and a back shovel fixedly connected at the other side of the hinge shaft; the scarifier is hinged with the lower end of the small arm through a hinge shaft; the scraper bucket oil cylinder is arranged on the side surface of the small arm, one end of the scraper bucket oil cylinder is hinged to the side surface of the small arm, and the other end of the scraper bucket oil cylinder is hinged to the side surface of the scarifier; when the bucket cylinder reaches the maximum stroke, the hinged point of the upper end of the bucket cylinder and the forearm, the hinged point of the scarifier and the forearm and the hinged point of the lower end of the bucket cylinder and the scarifier are positioned on the same straight line. The utility model discloses an excavator, simple structure, conversion easy operation between face shovel, the back shovel, low in manufacturing cost.
Description
Technical Field
The utility model relates to an excavator technical field, more specifically say and relate to an excavator horn of free conversion of face shovel back shovel.
Background
Rock arm, solid arm of excavator are the broken sharp ware of excavation such as weathered stone, shale, red sandstone, have the benefit of high efficiency low-loss than traditional quartering hammer operation, compare traditional blasting operation and say that the operating efficiency is high, broken with low costs, the maintenance cost is low.
Excavators are generally divided into two modes of operation, a face shovel and a backhoe, as are the rock arms derived therefrom. Because of the particularity of the rock arm work, the backhoe rock arm excavator can adapt to most working conditions, so the rock arm excavator used in the market usually mainly uses the backhoe. When the backhoe rock arm excavator meets the working condition more suitable for a face shovel, only the backhoe can be constructed, and the construction efficiency is low or even the backhoe rock arm excavator cannot be constructed according to different working conditions; conversely, the same is true when the face rock arm excavator encounters conditions more suited to backhoes.
at present, partial excavators capable of freely converting forward shovels and back shovels exist in the market, and if the national intellectual property office is 7/30/2014, a utility model patent with the publication number of CN203741895U and the name of 'a forward and reverse dual-purpose excavator' is disclosed, and the utility model patent comprises a base, a movable arm oil cylinder, a movable arm, a bucket rod oil cylinder, a bucket rod, a bucket oil cylinder, a chain rod, a bucket auxiliary oil cylinder, a forward bucket tooth, a reverse bucket tooth and a bucket; the bucket comprises a base, a movable arm, a bucket rod oil cylinder, a bucket auxiliary oil cylinder and a bucket rod, wherein the movable arm is arranged on the base and controls swing rotation of the movable arm through stretching of a movable arm oil cylinder for connecting the base and the movable arm, the end part of the movable arm is hinged to the bucket rod, one end of the bucket rod oil cylinder is connected to the movable arm, the other end of the bucket rod oil cylinder is connected with the bucket rod and controls swing rotation of the bucket rod through stretching of the bucket rod oil cylinder, the end part of the bucket rod is hinged to a bucket, one end of the bucket oil cylinder is connected to the bucket rod, the other end of the bucket oil cylinder is hinged to one end of the bucket auxiliary oil cylinder and one end of a chain rod connected to the bucket rod. The utility model discloses possess the function of tradition just, back shovel excavator.
Although an excavator capable of being used for both front and back sides is available in the market at present, the excavator in the market at present is only suitable for the operations of excavation, pushing and filling, loading and unloading, hoisting and the like of materials such as earthwork and is not suitable for the crushing action on rocks. And the existing reversible excavator has more complex structure and higher cost.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defect that exists among the above-mentioned prior art and not enough, this application provides an excavator horn of free conversion of front shovel back shovel, the utility model discloses an invention aim at provides an excavator horn that is applicable to rock breakage and front shovel back shovel can freely change, the utility model discloses an excavator horn, simple structure, conversion easy operation between front shovel, the back shovel, low in manufacturing cost.
in order to solve the problems existing in the prior art, the method is realized by the following technical scheme:
A front shovel and back shovel freely-converted excavator arm comprises a large arm, a small arm oil cylinder, a scarifier and a bucket oil cylinder, wherein one end of the large arm is provided with a hinged joint or a hinged shaft hinged with an excavator body, the other end of the large arm is hinged with the small arm, one end of the small arm oil cylinder is hinged on the large arm, and the other end of the small arm oil cylinder is hinged with the small arm; the method is characterized in that: the scarifier comprises a hinge shaft for hinging the scarifier with the small arm, a front shovel fixedly connected to one side of the hinge shaft and a back shovel fixedly connected to the other side of the hinge shaft; the scarifier is hinged with the lower end of the small arm through a hinge shaft; the scraper bucket oil cylinder is arranged on the side surface of the small arm, one end of the scraper bucket oil cylinder is hinged to the side surface of the small arm, and the other end of the scraper bucket oil cylinder is hinged to the side surface of the scarifier; when the bucket cylinder reaches the maximum stroke, a hinge point of the upper end of the bucket cylinder and the forearm, a hinge point of the scarifier and the forearm and a hinge point of the lower end of the bucket cylinder and the scarifier are positioned on the same straight line; the lower end of the small arm is provided with a space for the front shovel or the back shovel to pass through.
In the present application, the "one side" of the front shovel fixedly attached to one side of the hinge shaft and the back shovel fixedly attached to the other side of the hinge shaft is both sides with respect to the axial direction of the hinge shaft. The "side" of one end of the bucket cylinder hinged in the side of the forearm is the side opposite to the direction of rotation of the forearm. The other end of the bucket oil cylinder is hinged to the side surface of the scarifier, and the side surface is the side surface relative to the rotation direction of the scarifier. The articulated point of the upper end of the bucket cylinder and the forearm, the articulated point of the scarifier and the forearm and the articulated point of the lower end of the bucket cylinder and the scarifier are positioned on a straight line, namely an articulated shaft of the upper end of the bucket cylinder and the forearm, an articulated shaft of the scarifier and the forearm and a shaft of the lower end of the bucket cylinder and the scarifier, wherein the articulated point of the upper end of the bucket cylinder and the forearm and the articulated point of the lower end of the scarifier and the scarifier are positioned on the same plane in space, and the straight line does not mean a straight line in strict sense but three articulated points are positioned on the same straight.
The working principle of the utility model is that the small arm is installed on the big arm of the existing excavator through the small arm articulated shaft, and the small arm oil cylinder is connected with the small arm at the same time, and the small arm oil cylinder drives the small arm to rotate around the articulated shaft articulated between the small arm and the big arm; and then the forearm is controlled by the existing control mode of the excavator. The oil way of the bucket oil cylinder is connected with an oil way control device of the excavator, the bucket oil cylinder is controlled through a control device of the excavator, when backhoe is needed, operation is carried out in the same mode as the prior art, when backhoe is needed to be converted to the forward shovel, or the forward shovel is converted to the backhoe, the bucket oil cylinder is controlled to reach the maximum stroke, a hinged joint of the upper end of the bucket oil cylinder and a small arm is hinged, a hinged joint of a scarifier and the small arm is hinged, and a hinged joint of the lower end of the bucket oil cylinder and the scarifier are located on the same straight line, the scarifier is contacted with the ground, and the hinged joint of the lower end of the bucket oil cylinder and the scarifier crosses the straight line of the stroke of the bucket oil cylinder when the large stroke through angle adjustment of the small arm, so that conversion between the.
The two bucket oil cylinders are arranged and are respectively arranged on two sides of the small arm.
The scarifier comprises two forward shovel tooth parts and a back shovel tooth part, the back shovel tooth part is located between the two forward shovel tooth parts, one end of the forward shovel tooth part is fixedly connected to the hinge shaft, the other end of the forward shovel tooth part extends to one side of the hinge shaft, one end of the back shovel tooth part is fixedly connected to a connecting shaft between the two forward shovel tooth parts, and the other end of the back shovel tooth part extends to the other side of the hinge shaft.
The connecting shaft extends towards the outer side of the front shovel tooth part, and the extending section of the connecting shaft is hinged with the bucket cylinder.
And a shaft hole hinged with the bucket oil cylinder is arranged on the outer side surface of the face shovel tooth piece.
The front shovel tooth piece has a radian, the back shovel tooth piece has a radian, and the circle center of the radians of the front shovel tooth piece and the back shovel tooth piece is arranged on the same side after the front shovel tooth piece and the back shovel tooth piece are arranged on the hinge shaft.
Compared with the prior art, the beneficial technical effects brought by the application are shown in that:
1. Compared with the prior art, this application has adjusted the mounted position of scraper bowl hydro-cylinder, installs the scraper bowl hydro-cylinder in the forearm side, also drives from the side during the drive ripper, and the mode that sets up like this compares in prior art, when carrying out front shovel or back shovel operation, and the homoenergetic guarantees that front shovel and back shovel have the swing angle of original independent front shovel and back shovel. And after the conversion of the front shovel and the back shovel is realized, the normal working angle and efficiency of the front shovel or the back shovel are realized. The conversion mode of the face shovel and the backhoe in the application is different from that of the prior art, the conversion of the face shovel and the backhoe in the application takes a straight line at which a hinge point of the upper end of a bucket oil cylinder and a forearm, a hinge point of a scarifier and the forearm and a hinge point of the lower end of the bucket oil cylinder and the scarifier are positioned as a boundary, and the hinge point of the scarifier and the forearm is positioned between the hinge point of the upper end of the bucket oil cylinder and the forearm and the hinge point of the lower end of the bucket oil cylinder and the scarifier; taking the attached drawing 3 in the specification of the application as an example, when the hinged point of the lower end of the bucket cylinder and the scarifier is positioned on the left side of the connecting line of the hinged point of the upper end of the bucket cylinder and the hinged point of the scarifier and the forearm, forward shoveling is carried out, and if the hinged point is positioned on the right side of the connecting line, backward shoveling is carried out. The benefit that this application set up like this is when can guaranteeing drag shovel and back shovel, and the angle of adjustment of drag shovel and back shovel all keeps unanimous with solitary drag shovel or back shovel angle of adjustment among the prior art, can not appear because of setting up the angle of adjustment that the drag shovel leads to the drag shovel back shovel on an excavator and diminishing.
2. In this application, the scraper bowl hydro-cylinder is provided with two, sets up respectively in the both sides of forearm, can strengthen the stability of agitator at the during operation, ensures to provide sufficient holding power.
3. In the application, the scarifier is provided with two front shovel tooth parts and one back shovel tooth part, wherein the front shovel tooth parts are symmetrically arranged relative to the back shovel tooth parts, so that a good front shovel effect can be provided when the front shovel works; the backhoe is arranged between the two forward shovel parts, the backhoe parts can be kept in alignment with the small arms, force transmission of the backhoe parts in use is guaranteed, and the small arms provide good support for the scarifier.
4. in this application, the face and backhoe teeth each have a certain arc, and after the face and backhoe teeth are mounted on the hinge shaft, the arcs are the same. The arc directions are not strictly identical, but only the outer circumferences of the front shovel tooth component and the back shovel tooth component are similar to an arc, namely the circle centers of the arcs are on the same side; the face and backhoe teeth and the hinge shaft are substantially W-shaped, M-shaped or V-shaped.
Drawings
FIG. 1 is a diagram showing the state of use of a backhoe of the excavator according to the present invention;
FIG. 2 is a view showing the state of use of the front shovel of the excavator of the present invention;
FIG. 3 is a conversion state diagram of a front shovel and a back shovel of the excavator of the utility model;
fig. 4 is a schematic side view of the ripper of the present invention;
Fig. 5 is a schematic top view of the ripper of the present invention;
Reference numerals: 1. the excavator comprises a small arm, 2, a large arm, 3, a large arm oil cylinder, 4, a small arm oil cylinder, 5, an excavator body, 6, a scarifier, 7, a bucket oil cylinder, 8, a face shovel, 9, a backhoe, 10, a hinge shaft, 11, a face shovel tooth piece, 12, a backhoe tooth piece, 13, shaft holes, 14 and a connecting shaft.
Detailed Description
The technical solution of the present invention is further explained and explained below with reference to the drawings of the specification.
In the present application, the "one side" of the front shovel 8 fixedly attached to one side of the hinge shaft 10 and the back shovel 9 fixedly attached to the other side of the hinge shaft 10 is both sides in the axial direction with respect to the hinge shaft 10. The "sides" where one end of the bucket cylinder 7 is hinged in the sides of the arm 1 are the sides with respect to the rotation direction of the arm 1. The other end of the bucket cylinder 7 is hinged to the side surface of the ripper 6, wherein the side surface is the side surface relative to the rotation direction of the ripper 6. The hinged point of the upper end of the bucket oil cylinder 7 and the forearm 1, the hinged point of the scarifier 6 and the forearm 1 and the hinged point of the lower end of the bucket oil cylinder 7 and the scarifier 6 are positioned on a straight line, namely a hinged shaft of the upper end of the bucket oil cylinder 7 and the forearm 1, a hinged shaft 10 of the scarifier 6 and the forearm 1 and a shaft of the lower end of the bucket oil cylinder 7 and the scarifier 6 are hinged, and the axes of the three shafts are positioned in the same plane on the space.
Example 1
Referring to fig. 1-5 of the specification, this embodiment discloses:
As shown in fig. 1, an excavator arm with freely-converted face shovel and backhoe comprises a big arm 2, a small arm 1, a small arm oil cylinder 4, a scarifier 6 and a bucket oil cylinder 7, wherein one end of the big arm 2 is provided with a hinge joint or a hinge shaft hinged with an excavator body, the other end of the big arm is hinged with the small arm 1, one end of the small arm oil cylinder 4 is hinged on the big arm 2, and the other end of the small arm oil cylinder is hinged with the small arm 1; the scarifier 6 comprises a hinge shaft 10 for hinging the scarifier 6 with the small arm 1, a front shovel 8 fixedly connected to one side of the hinge shaft 10 and a back shovel 9 fixedly connected to the other side of the hinge shaft 10; the scarifier 6 is hinged with the lower end of the small arm 1 through a hinge shaft 10; the bucket oil cylinder 7 is arranged on the side surface of the small arm 1, one end of the bucket oil cylinder 7 is hinged to the side surface of the small arm 1, and the other end of the bucket oil cylinder 7 is hinged to the side surface of the scarifier 6; when the bucket oil cylinder 7 reaches the maximum stroke, a hinge point of the upper end of the bucket oil cylinder 7 and the forearm 1, a hinge point of the scarifier 6 and the forearm 1 and a hinge point of the lower end of the bucket oil cylinder 7 and the scarifier 6 are positioned on the same straight line; the lower end of the small arm 1 is provided with a space for the front shovel 8 or the back shovel 9 to pass through.
The small arm 1 is installed on a large arm 2 of an existing excavator through a small arm 1 hinged shaft, meanwhile, a small arm oil cylinder 4 is connected with the small arm 1, and the small arm oil cylinder 4 drives the small arm 1 to rotate around the hinged shaft hinged between the small arm 1 and the large arm 2; the forearm 1 is then controlled by the existing control means of the excavator. The oil path of the bucket oil cylinder 7 is connected with an oil path control device of the excavator, the bucket oil cylinder 7 is controlled through the control device of the excavator, and when the backhoe 9 needs to be carried out, the operation is carried out in the same mode as the prior art. When the backhoe 9 needs to be converted to the backhoe 8, or the backhoe 8 is converted to the backhoe 9, the bucket oil cylinder 7 is controlled to reach the maximum stroke, so that a hinged point of the upper end of the bucket oil cylinder 7 and the forearm 1, a hinged point of the scarifier 6 and the forearm 1, and a hinged point of the lower end of the bucket oil cylinder 7 and the scarifier 6 are located on the same straight line, the scarifier 6 is contacted with the ground, and the hinged point of the lower end of the bucket oil cylinder 7 and the scarifier 6 crosses the straight line of the stroke of the bucket oil cylinder 7 during the maximum stroke through angle adjustment of the forearm 1, so that conversion between the backhoes is completed.
Example 2
as another preferred embodiment of the present application, referring to fig. 1-5 of the specification, the present embodiment discloses:
a front shovel and back shovel freely-converted excavator arm comprises a large arm 2, a small arm 1, a small arm oil cylinder 4, a scarifier 6 and a bucket oil cylinder 7, wherein one end of the large arm 2 is provided with a hinge joint or a hinge shaft hinged with an excavator body, the other end of the large arm is hinged with the small arm 1, one end of the small arm oil cylinder 4 is hinged on the large arm 2, and the other end of the small arm oil cylinder is hinged with the small arm 1; the scarifier 6 comprises a hinge shaft 10 for hinging the scarifier 6 with the small arm 1, a front shovel 8 fixedly connected to one side of the hinge shaft 10 and a back shovel 9 fixedly connected to the other side of the hinge shaft 10; the scarifier 6 is hinged with the lower end of the small arm 1 through a hinge shaft 10; the bucket oil cylinder 7 is arranged on the side surface of the small arm 1, one end of the bucket oil cylinder 7 is hinged to the side surface of the small arm 1, and the other end of the bucket oil cylinder 7 is hinged to the side surface of the scarifier 6; when the bucket oil cylinder 7 reaches the maximum stroke, a hinged point of the upper end of the bucket oil cylinder 7 and the forearm 1, a hinged point of the scarifier 6 and the forearm 1 and a hinged point of the lower end of the bucket oil cylinder 7 and the scarifier 6 are positioned on the same straight line. As shown in fig. 2, the lower end of the small arm 1 is provided with a space for the front shovel 8 or the backhoe 9 to pass through. And two bucket oil cylinders 7 are arranged and are respectively arranged at two sides of the small arm 1.
Further, as shown in fig. 4-5, the ripper 6 includes two front shovel tooth members 11 and a back shovel tooth member 12, the back shovel tooth member 12 is located between the two front shovel tooth members 11, one end of the front shovel tooth member 11 is fixedly connected to the hinge shaft 10, the other end extends toward one side of the hinge shaft 10, one end of the back shovel tooth member 12 is fixedly connected to the connecting shaft between the two front shovel tooth members 11, and the other end extends toward the other side of the hinge shaft 10. The connecting shaft extends towards the outer side of the front shovel tooth part 11, and the extending section of the connecting shaft is hinged with the bucket cylinder 7.
Or, the ripper 6 includes two front shovel tooth pieces 11 and one back shovel tooth piece 12, and back shovel tooth piece 12 is located between two front shovel tooth pieces 11, and back shovel tooth piece 12 one end fixed connection is on the hinge 10, and the other end extends to hinge 10 one side, and front shovel tooth piece 11's one end fixed connection is on the connecting axle between two back shovel tooth pieces 12, and the other end extends to hinge 10 opposite side.
Furthermore, in the present embodiment, the ripper 6 includes two back-hoe teeth 12 and a front-hoe teeth 11, the front-hoe teeth 11 is located between the two back-hoe teeth 12, one end of the front-hoe teeth 11 is fixedly connected to the hinge shaft 10, the other end extends to one side of the hinge shaft 10, one end of the back-hoe teeth 12 is fixedly connected to the hinge shaft 10, and the other end extends to the other side of the hinge shaft 10.
The ripper 6 may further include a front tine 11 and a back tine 12, wherein one end of the back tine 12 is fixedly connected to the hinge shaft 10, and the other end thereof extends toward one side of the hinge shaft 10, and one end of the front tine 11 is fixedly connected to the hinge shaft 10, and the other end thereof extends toward the other side of the hinge shaft 10. The face and backhoe teeth 12 may be integrally connected to the arm 1 by a hinge shaft 10.
or, the ripper 6 includes two front shovel tooth components 11 and two back shovel tooth components 12, and the back shovel tooth components 12 and the front shovel tooth components 11 are connected into a whole in a one-to-one mode and are fixed on the hinge shaft 10.
Example 3
As another preferred embodiment of the present application, referring to fig. 1-5 of the specification, the present embodiment discloses:
A front shovel and back shovel freely-converted excavator arm comprises a large arm 2, a small arm 1, a small arm oil cylinder 4, a scarifier 6 and a bucket oil cylinder 7, wherein one end of the large arm 2 is provided with a hinge joint or a hinge shaft hinged with an excavator body, the other end of the large arm is hinged with the small arm 1, one end of the small arm oil cylinder 4 is hinged on the large arm 2, and the other end of the small arm oil cylinder is hinged with the small arm 1; the scarifier 6 comprises a hinge shaft 10 for hinging the scarifier 6 with the small arm 1, a front shovel 8 fixedly connected to one side of the hinge shaft 10 and a back shovel 9 fixedly connected to the other side of the hinge shaft 10; the scarifier 6 is hinged with the lower end of the small arm 1 through a hinge shaft 10; the bucket oil cylinder 7 is arranged on the side surface of the small arm 1, one end of the bucket oil cylinder 7 is hinged to the side surface of the small arm 1, and the other end of the bucket oil cylinder 7 is hinged to the side surface of the scarifier 6; when the bucket oil cylinder 7 reaches the maximum stroke, a hinged point of the upper end of the bucket oil cylinder 7 and the forearm 1, a hinged point of the scarifier 6 and the forearm 1 and a hinged point of the lower end of the bucket oil cylinder 7 and the scarifier 6 are positioned on the same straight line. The lower end of the small arm 1 is provided with a space for the front shovel 8 or the back shovel 9 to pass through.
In a more preferable embodiment, the embodiment discloses an excavator with freely-converted front shovel and back shovel, which comprises an excavator body 5, a large arm 2, a large arm oil cylinder 3, a small arm 1, a small arm oil cylinder 4, a scarifier 6 and a bucket oil cylinder 7, wherein one end of the large arm 2 is hinged on the excavator body, one end of the large arm oil cylinder 3 is hinged on the large arm 2, and the other end of the large arm oil cylinder is hinged on the excavator body; the other end of the large arm 2 is hinged with the small arm 1, one end of the small arm oil cylinder 4 is hinged on the large arm 2, and the other end of the small arm oil cylinder is hinged with the small arm 1; the scarifier 6 comprises a hinge shaft 10 for hinging the scarifier 6 with the small arm 1, a front shovel 8 fixedly connected to one side of the hinge shaft 10 and a back shovel 9 fixedly connected to the other side of the hinge shaft 10; the scarifier 6 is hinged with the lower end of the small arm 1 through a hinge shaft 10; the bucket oil cylinder 7 is arranged on the side surface of the small arm 1, one end of the bucket oil cylinder 7 is hinged to the side surface of the small arm 1, and the other end of the bucket oil cylinder 7 is hinged to the side surface of the scarifier 6; when the bucket oil cylinder 7 reaches the maximum stroke, a hinged point of the upper end of the bucket oil cylinder 7 and the forearm 1, a hinged point of the scarifier 6 and the forearm 1 and a hinged point of the lower end of the bucket oil cylinder 7 and the scarifier 6 are positioned on the same straight line.
And two bucket oil cylinders 7 are arranged and are respectively arranged at two sides of the small arm 1. The ripper 6 includes two forward shovel tooth spare 11 and a back shovel tooth spare 12, and back shovel tooth spare 12 is located between two forward shovel tooth spare 11, and back shovel tooth spare 12 one end fixed connection is on the hinge 10, and the other end extends to hinge 10 one side, and forward shovel tooth spare 11 one end fixed connection is on the hinge 10, and the other end extends to hinge 10 opposite side. And a shaft hole 13 hinged with the bucket cylinder 7 is arranged on the outer side surface of the face shovel tooth part 11. The face shovel tooth part 11 has a radian, the backhoe tooth part 12 has a radian, and the circle centers of the radians of the face shovel tooth part 11 and the backhoe tooth part 12 are on the same side after being installed on the hinge shaft 10.
Example 4
As a further preferred embodiment of the present application, referring to the accompanying fig. 1-3 of the specification, this embodiment discloses an embodiment of the present application for mounting a rock arm on an excavator, specifically:
A rock arm of an excavator with freely converted face shovel and backhoe comprises a small arm 1, a ripper 6 and a bucket cylinder 7, wherein the ripper 6 comprises a hinge shaft 10 for hinging the ripper 6 and the small arm 1, a face shovel 8 fixedly connected to one side of the hinge shaft 10, and a backhoe 9 fixedly connected to the other side of the hinge shaft 10; the scarifier 6 is hinged with the lower end of the small arm 1 through a hinge shaft 10; the bucket oil cylinder 7 is arranged on the side surface of the small arm 1, one end of the bucket oil cylinder 7 is hinged to the side surface of the small arm 1, and the other end of the bucket oil cylinder 7 is hinged to the side surface of the scarifier 6; when the bucket oil cylinder 7 reaches the maximum stroke, a hinged point of the upper end of the bucket oil cylinder 7 and the forearm 1, a hinged point of the scarifier 6 and the forearm 1 and a hinged point of the lower end of the bucket oil cylinder 7 and the scarifier 6 are positioned on the same straight line. And two bucket oil cylinders 7 are arranged and are respectively arranged at two sides of the small arm 1. The ripper 6 includes two forward shovel tooth spare 11 and a back shovel tooth spare 12, and back shovel tooth spare 12 is located between two forward shovel tooth spare 11, and back shovel tooth spare 12 one end fixed connection is on the hinge 10, and the other end extends to hinge 10 one side, and forward shovel tooth spare 11 one end fixed connection is on the hinge 10, and the other end extends to hinge 10 opposite side. And a shaft hole 13 hinged with the bucket cylinder 7 is arranged on the outer side surface of the face shovel tooth part 11. The face shovel tooth part 11 has a radian, the backhoe tooth part 12 has a radian, and the circle centers of the radians of the face shovel tooth part 11 and the backhoe tooth part 12 are on the same side after being installed on the hinge shaft 10.
Example 5
Referring to fig. 4 and 5 of the drawings, this embodiment discloses a ripper 6 suitable for an excavator according to the present invention, and the ripper 6 is a passive traction work apparatus and is generally mounted on a rear frame of a motor vehicle such as a grader, a bulldozer, or a tractor.
The utility model provides a ripper 6, includes forward shovel tooth spare 11, back shovel tooth spare 12 and hinge 10, forward shovel tooth spare 11 is two, and back shovel tooth spare 12 is one, and two forward shovel tooth spares 11 set up side by side, and is provided with the clearance between two forward shovel tooth spares 11, and back shovel tooth spare 12 is located between two forward shovel tooth spares 11, is provided with between two forward shovel tooth spares 11 to be used for with forearm 1 articulated hinge 10, and still is provided with the connecting axle that is used for fixed connection back shovel tooth spare 12 between two forward shovel 8 times. The bottom of the face shovel tooth part 11 is provided with a reinforcing connecting plate which fixedly connects the face shovel tooth part 11 and the backhoe tooth part 12 together.
furthermore, the connecting shaft extends towards the outer side of the face shovel tooth part 11, and the extending section of the connecting shaft is hinged with the bucket cylinder 7; or the front shovel tooth member 11 is provided with a shaft hole 13 hinged with the bucket cylinder 7 on the outer side.
Claims (6)
1. A front shovel and back shovel freely-converted excavator arm comprises a large arm (2), a small arm (1), a small arm oil cylinder (4), a scarifier (6) and a bucket oil cylinder (7), wherein one end of the large arm (2) is provided with a hinge joint or a hinge shaft hinged with an excavator body (5), and the other end of the large arm is hinged with the small arm (1); one end of the small arm oil cylinder (4) is hinged on the large arm (2), and the other end of the small arm oil cylinder is hinged with the small arm (1); the method is characterized in that: the scarifier (6) comprises a hinge shaft (10) for hinging the scarifier (6) with the small arm (1), a front shovel (8) fixedly connected to one side of the hinge shaft (10), and a back shovel (9) fixedly connected to the other side of the hinge shaft (10); the scarifier (6) is hinged with the lower end of the small arm (1) through a hinge shaft (10); the shovel bucket oil cylinder (7) is installed on the side face of the small arm (1), one end of the shovel bucket oil cylinder (7) is hinged to the side face of the small arm (1), and the other end of the shovel bucket oil cylinder (7) is hinged to the side face of the scarifier (6); when the bucket oil cylinder (7) reaches the maximum stroke, the hinged point of the upper end of the bucket oil cylinder (7) and the small arm (1), the hinged point of the scarifier (6) and the small arm (1) and the hinged point of the lower end of the bucket oil cylinder (7) and the scarifier (6) are positioned on the same straight line; the lower end of the small arm (1) is provided with a space for the front shovel (8) or the back shovel (9) to pass through.
2. a backhoe freely convertible excavator arm as defined in claim 1 wherein: the two bucket oil cylinders (7) are respectively arranged on two sides of the small arm (1).
3. a backhoe freely convertible excavator arm according to claim 1 or 2 wherein: the scarifier (6) comprises two forward shovel tooth parts (11) and a back shovel tooth part (12), the back shovel tooth part (12) is located between the two forward shovel tooth parts (11), one end of the forward shovel tooth part (11) is fixedly connected to the hinge shaft (10), the other end of the forward shovel tooth part extends towards one side of the hinge shaft (10), one end of the back shovel tooth part (12) is fixedly connected to a connecting shaft between the two forward shovel tooth parts (11), and the other end of the back shovel tooth part extends towards the other side of the hinge shaft (10).
4. A backhoe freely convertible excavator arm according to claim 3 wherein: the connecting shaft extends to the outer side of the front shovel tooth piece (11), and the extending section of the connecting shaft is hinged with the bucket cylinder (7).
5. A backhoe freely convertible excavator arm according to claim 3 wherein: and a shaft hole (13) hinged with the bucket oil cylinder (7) is formed in the outer side surface of the face shovel tooth piece (11).
6. A backhoe freely convertible excavator arm according to claim 3 wherein: the front shovel tooth piece (11) has a radian, the back shovel tooth piece (12) has a radian, and after the front shovel tooth piece (11) and the back shovel tooth piece (12) are installed on the hinge shaft (10), the circle centers of the radians are on the same side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920161623.5U CN209779731U (en) | 2019-01-30 | 2019-01-30 | Excavator arm with freely-converted front shovel and back shovel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920161623.5U CN209779731U (en) | 2019-01-30 | 2019-01-30 | Excavator arm with freely-converted front shovel and back shovel |
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| Publication Number | Publication Date |
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| CN201920161623.5U Active CN209779731U (en) | 2019-01-30 | 2019-01-30 | Excavator arm with freely-converted front shovel and back shovel |
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| CN (1) | CN209779731U (en) |
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