CN111945816A - Limiting device and excavator - Google Patents
Limiting device and excavator Download PDFInfo
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- CN111945816A CN111945816A CN202010968104.7A CN202010968104A CN111945816A CN 111945816 A CN111945816 A CN 111945816A CN 202010968104 A CN202010968104 A CN 202010968104A CN 111945816 A CN111945816 A CN 111945816A
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- 238000004891 communication Methods 0.000 claims abstract description 8
- 238000010586 diagram Methods 0.000 description 6
- 230000033001 locomotion Effects 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/20—Drives; Control devices
- E02F9/2058—Electric or electro-mechanical or mechanical control devices of vehicle sub-units
- E02F9/2087—Control of vehicle steering
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02F—DREDGING; SOIL-SHIFTING
- E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
- E02F9/16—Cabins, platforms, or the like, for drivers
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- General Engineering & Computer Science (AREA)
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- Component Parts Of Construction Machinery (AREA)
Abstract
The invention provides a limiting device and an excavator, relates to the technical field of engineering equipment, and aims to solve the technical problem that the excavator exceeds a limited rotation angle range in a specific operation environment to a certain extent. The invention provides a limiting device for an excavator, which comprises a first trigger part, a second trigger part and a top plate, wherein the first trigger part is arranged on the top plate; the top plate is arranged on one surface, facing the rotary platform of the excavator, of the walking combined frame of the excavator and extends towards the direction close to the rotary platform; the first trigger part and the second trigger part are symmetrically arranged on one surface of the rotary platform, facing the walking combined frame, along the axis of the rotary platform, are positioned on two sides of the width direction of the top plate and are arranged at intervals with the top plate, so that the first trigger part and the second trigger part can rotate for a certain distance along with the rotary platform and then are in contact with the top plate; the first trigger part and the second trigger part are respectively in communication connection with an electromagnetic valve in a left rotary oil way and an electromagnetic valve in a right rotary oil way of the excavator so as to control the on-off of the electromagnetic valves.
Description
Technical Field
The invention relates to the technical field of engineering equipment, in particular to a limiting device and an excavator.
Background
The excavator is a common engineering machine, and when the excavator is applied to railway construction or other special operation working conditions, in order to ensure the safety of construction, the rotation angle of the excavator needs to be limited, so that the excavator can only rotate for a certain angle, and the occurrence of accidents caused by interference and collision with objects outside the limited rotation angle range is avoided.
However, most of the limited rotation angles of the excavator at the present stage are still controlled by a driver, so that the operation difficulty of the driver is improved, and deviation is easily caused.
Therefore, it is desirable to provide a limiting device and an excavator to solve the problems in the prior art to some extent.
Disclosure of Invention
The invention aims to provide a limiting device and an excavator, and aims to solve the technical problem that the excavator exceeds a limited rotation angle range under a specific operation environment to a certain extent.
The invention provides a limiting device for an excavator, which comprises a first trigger part, a second trigger part and a top plate, wherein the first trigger part is arranged on the top plate; the top plate is arranged on one surface, facing the rotary platform of the excavator, of the walking combined frame of the excavator and extends towards the direction close to the rotary platform; the first trigger part and the second trigger part are symmetrically arranged on one surface, facing the walking combined rack, of the rotary platform along the axis of the rotary platform, are positioned on two sides of the width direction of the top plate and are arranged at intervals with the top plate, so that the first trigger part and the second trigger part can rotate for a certain distance along with the rotary platform and then are in contact with the top plate; the first trigger part and the second trigger part are respectively in communication connection with an electromagnetic valve in a left rotary oil path and an electromagnetic valve in a right rotary oil path of the excavator so as to control the on-off of the electromagnetic valves.
The limiting device further comprises a first positioning seat and a second positioning seat, wherein the first positioning seat and the second positioning seat are both arranged on one surface, facing the walking combination rack, of the rotary platform and are detachably connected with the rotary platform; the first trigger piece and the first positioning seat are correspondingly arranged, and the second trigger piece and the second positioning seat are correspondingly arranged.
Specifically, the limiting device provided by the invention further comprises a third positioning seat, the third positioning seat is arranged on one surface, facing the rotary platform, of the walking combined frame, and the top plate and the third positioning seat are correspondingly arranged.
Furthermore, the third positioning seat is L-shaped and comprises a positioning section and a connecting section, the positioning section is connected with the walking combined frame, the connecting section extends towards the direction close to the rotary platform, the top plate is connected with the connecting section, and a waist hole is formed along the length direction of the connecting section, so that the top plate can move towards the direction close to or away from the rotary platform.
The limiting device further comprises a limiting component and a first limiting block; the limiting component is arranged on one surface, facing the rotary platform, of the walking combined frame, extends towards the direction close to the rotary platform and is arranged corresponding to the top plate; the number of the first limiting blocks is two, and the two first limiting blocks are arranged on one surface, facing the walking combined rack, of the rotary platform, correspond to the first triggering piece and the second triggering piece respectively, and are arranged in the direction approaching to the walking combined rack; when the first trigger piece or the second trigger piece is contacted with the top plate and the rotary platform continues to rotate, the first limit block abuts against the limit component, so that the rotary platform can stop rotating.
Specifically, the limiting component comprises a mounting seat, a first connecting piece and a second limiting block; the mounting seat is arranged on the walking combined frame, a mounting groove is formed in the mounting seat, one end of the second limiting block is embedded into the mounting groove, and the first connecting piece penetrates through the mounting seat and the second limiting block, so that the second limiting block is rotatably connected with the mounting seat.
Furthermore, the limiting component further comprises a second connecting piece, wherein the second connecting piece penetrates through the mounting seat and the second limiting block and is detachably connected with the mounting seat and the second limiting block, so that the second limiting block can be located at the first position or the second position.
Furthermore, the first trigger piece and the second trigger piece are both travel switches.
Compared with the prior art, the limiting device provided by the invention has the following advantages:
the invention provides a limiting device for an excavator, which comprises a first trigger part, a second trigger part and a top plate, wherein the first trigger part is arranged on the top plate; the top plate is arranged on one surface, facing the rotary platform of the excavator, of the walking combined frame of the excavator and extends towards the direction close to the rotary platform; the first trigger part and the second trigger part are symmetrically arranged on one surface of the rotary platform, facing the walking combined frame, along the axis of the rotary platform, are positioned on two sides of the width direction of the top plate and are arranged at intervals with the top plate, so that the first trigger part and the second trigger part can rotate for a certain distance along with the rotary platform and then are in contact with the top plate; the first trigger part and the second trigger part are respectively in communication connection with an electromagnetic valve in a left rotary oil way and an electromagnetic valve in a right rotary oil way of the excavator so as to control the on-off of the electromagnetic valves.
From this analysis can know, through set up first trigger piece and second trigger piece on rotary platform, make the break-make of the solenoid valve of first trigger piece can control left gyration oil circuit, the break-make of the solenoid valve of second trigger piece control right gyration oil circuit, the rethread sets up the roof on walking combined bay, when rotary platform was rotatory left, rotary platform drove first trigger piece and moves to the direction that is close the roof, until first trigger piece and roof contact, thereby the solenoid valve of disconnection left gyration oil circuit, and then make left gyration stop.
When the rotary platform rotates rightwards, the rotary platform drives the second trigger part to move towards the direction close to the top plate until the second trigger part is contacted with the top plate, so that the electromagnetic valve of the right rotary oil way is disconnected, and then the right rotary is stopped.
The left-right rotation action of the excavator can be timely disconnected through the first trigger piece and the second trigger piece, so that the excavator can only rotate within a certain angle range, and the operation safety is guaranteed.
In addition, the invention also provides an excavator, which comprises the limiting device, a walking combined frame, a slewing device, a slewing platform, a left slewing oil way, a right slewing oil way and a control terminal; the rotating device is arranged on the walking combined frame, the rotating platform is arranged on the rotating device, and the rotating device can drive the rotating platform to rotate; the first trigger part controls the starting and stopping of an electromagnetic valve of the left rotary oil way, the second trigger part controls the starting and stopping of an electromagnetic valve of the right rotary oil way, and the control terminal is in communication connection with the first trigger part and the second trigger part to control the starting and stopping of the first trigger part and the second trigger part.
The excavator further comprises a change-over switch, and the change-over switch is used for exchanging the rotary oil path controlled by the first trigger piece and the second trigger piece.
The excavator provided by the application controls the starting and stopping of the first trigger piece and the second trigger piece through the control terminal. The control terminal is located in the cab, and when the range of the rotation angle of the excavator needs to be limited, a driver starts the first trigger piece and the second trigger piece through the control terminal, so that the limitation of the rotation angle of the excavator can be realized. When the range of the rotation angle of the excavator is not required to be limited, a driver closes the first trigger piece and the second trigger piece through the control terminal, and therefore the excavator can realize full-angle rotation action.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is an overall structural schematic diagram of a first view angle of an excavator according to an embodiment of the present invention;
fig. 2 is an overall structural diagram of a second view angle of the excavator according to the embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2 at A;
fig. 4 is a schematic structural diagram of a revolving platform of the excavator according to the embodiment of the present invention;
fig. 5 is a schematic structural view of a walking assembly frame of an excavator according to an embodiment of the present invention;
FIG. 6 is an exploded view of a stop member of the stop device according to an embodiment of the present invention;
fig. 7 is a schematic structural view of a position limiting member in a position limiting device according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a limiting member in a second position in the limiting device according to the embodiment of the present invention.
In the figure: 1-a first trigger; 2-a second trigger; 3-a top plate; 4-a first positioning seat; 5-a second positioning seat; 6-a third positioning seat; 601-a positioning section; 602-a connecting segment; 6021-kidney hole; 7-a first limiting block; 8-a stop member; 801-mounting seat; 8011-mounting groove; 802-a second stopper; 803 — first connecting member; 804-a second connector; 9-a walking combined frame; 10-a rotary platform; 11-rotating device.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all the embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present application without making any creative effort, shall fall within the protection scope of the present application.
In the description of the embodiments of the present application, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships that the products of the present invention are usually placed in when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the embodiments of the present application, it should also be noted that, unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As used herein, the term "and/or" includes any one of the associated listed items and any combination of any two or more of the items.
For ease of description, spatial relationship terms such as "above … …," "upper," "below … …," and "lower" may be used herein to describe one element's relationship to another element as illustrated in the figures. Such spatial relationship terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures.
The terminology used herein is for the purpose of describing various examples only and is not intended to be limiting of the disclosure. The singular forms also are intended to include the plural forms as well, unless the context clearly indicates otherwise. The terms "comprises," "comprising," and "having" specify the presence of stated features, quantities, operations, elements, components, and/or combinations thereof, but do not preclude the presence or addition of one or more other features, quantities, operations, components, elements, and/or combinations thereof.
Variations from the shapes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, may be expected. Thus, the examples described herein are not limited to the particular shapes shown in the drawings, but include changes in shape that occur during manufacturing.
The features of the examples described herein may be combined in various ways that will be apparent after understanding the disclosure of the present application. Further, while the examples described herein have a variety of configurations, other configurations are possible, as will be apparent after understanding the disclosure of the present application. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present application.
Fig. 1 is an overall structural schematic diagram of a first view angle of an excavator according to an embodiment of the present invention; fig. 2 is an overall structural diagram of a second view angle of the excavator according to the embodiment of the present invention; FIG. 3 is an enlarged view of a portion of FIG. 2 at A; fig. 4 is a schematic structural diagram of a revolving platform of the excavator according to the embodiment of the present invention; fig. 5 is a schematic structural view of a walking assembly frame of an excavator according to an embodiment of the present invention.
As shown in fig. 1 to 5, the present invention provides a limiting device for an excavator, comprising a first trigger 1, a second trigger 2 and a top plate 3; the top plate 3 is arranged on one surface of a walking combination frame 9 of the excavator, which faces to a rotary platform 10 of the excavator, and extends towards the direction close to the rotary platform 10; the first trigger part 1 and the second trigger part 2 are symmetrically arranged on one surface of the rotary platform 10 facing the walking combined rack 9 along the axis of the rotary platform 10, are positioned on two sides of the width direction of the top plate 3, and are arranged at intervals with the top plate 3, so that the first trigger part 1 and the second trigger part 2 can rotate for a certain distance along with the rotary platform 10 and then are contacted with the top plate 3; the first trigger part 1 and the second trigger part 2 are respectively in communication connection with an electromagnetic valve in a left rotary oil path and an electromagnetic valve in a right rotary oil path of the excavator so as to control the on-off of the electromagnetic valves.
Compared with the prior art, the limiting device provided by the invention has the following advantages:
according to the limiting device provided by the invention, the first trigger part 1 and the second trigger part 2 are arranged on the rotary platform 10, so that the first trigger part 1 can control the on-off of the electromagnetic valve of the left rotary oil way, the second trigger part 2 controls the on-off of the electromagnetic valve of the right rotary oil way, the top plate 3 is arranged on the walking combination frame 9, when the rotary platform 10 rotates leftwards, the rotary platform 10 drives the first trigger part 1 to move towards the direction close to the top plate 3 until the first trigger part 1 is contacted with the top plate 3, so that the electromagnetic valve of the left rotary oil way is disconnected, and the left rotary is stopped.
When the rotary platform 10 rotates rightwards, the rotary platform 10 drives the second trigger part 2 to move towards the direction close to the top plate 3 until the second trigger part 2 contacts with the top plate 3, so that the electromagnetic valve of the right rotary oil way is disconnected, and then the right rotary is stopped.
The left-right rotation action of the excavator can be timely disconnected through the first trigger 1 and the second trigger 2, so that the excavator can only rotate within a certain angle range, and the operation safety is guaranteed.
It should be added here that, preferably, the first trigger member 1 and the second trigger member 2 in the present application are both travel switches. The on-off of the electromagnetic valves in the left rotary oil path and the right rotary oil path can be rapidly controlled through the travel switches.
As shown in fig. 1 to 5, the limiting device provided by the invention further comprises a first positioning seat 4 and a second positioning seat 5, wherein the first positioning seat 4 and the second positioning seat 5 are both arranged on one surface of the rotary platform 10 facing the walking combined frame 9 and are detachably connected with the rotary platform 10; the first trigger piece 1 is correspondingly arranged with the first positioning seat 4, and the second trigger piece 2 is correspondingly arranged with the second positioning seat 5.
Through set up first positioning seat 4 and second positioning seat 5 on rotary platform 10, and with first trigger 1 and the corresponding installation of first positioning seat 4, the second triggers 2 and the corresponding installation of second positioning seat 5 to make first trigger 1 and second trigger 2 can follow rotary platform 10 more stably and remove.
Preferably, first positioning seat 4 and second positioning seat 5 in this application are can dismantle with rotary platform 10 and be connected to can make first trigger 1 and second trigger 2 be for dismantling with rotary platform 10 and be connected, and then can be according to the different work condition demands, adjust the distance between first trigger 1 and second trigger 2 and roof 3.
The greater the distance between the first and second triggering members 1 and 2 and the top plate 3, the greater the displaceable distance of the first and second triggering members 1 and 2, and thus the greater the angle of rotation of the revolving platform 10. The smaller the distance between the first and second triggering members 1 and 2 and the top plate 3, the smaller the displaceable distance between the first and second triggering members 1 and 2, and thus the smaller the rotation angle of the revolving platform 10.
It should be added that the cross section of the revolving platform 10 in the present application is circular, and the first triggering member 1 and the second triggering member 2 are symmetrically disposed by taking a connecting line between the center of the revolving platform 10 and the axis of the top plate 3 as a symmetry axis, so that the distances between the first triggering member 1 and the second triggering member 2 and the top plate 3 are the same, and the revolving angle ranges of the left revolving motion and the right revolving motion are the same.
The distance between the first trigger piece 1 and the second trigger piece 2 and the top plate 3 can also be different, that is, the first trigger piece 1 and the second trigger piece 2 are only symmetrically arranged along the axis of the rotary platform 10, so that the rotary angle ranges of the left rotary motion and the right rotary motion are different, and different working condition requirements are met.
Specifically, as shown in fig. 1 to 5, the limiting device provided by the present invention further includes a third positioning seat 6, the third positioning seat 6 is disposed on one surface of the walking assembly frame 9 facing the rotary platform 10, and the top plate 3 is disposed corresponding to the third positioning seat 6.
Because first trigger 1 and second trigger 2 need contact with roof 3 when the operation, consequently, set up third positioning seat 6 and can make roof 3 more stable on the one hand to realize first trigger 1 and second trigger 2 and the accurate contact of roof 3, on the other hand, can make roof 3 more stable with being connected of walking built-up frame 9, avoided first trigger 1 and second to a certain extent to touch many times of trigger 2, make the problem of roof 3 skew.
Further, as shown in fig. 1 to 5, the third positioning seat 6 is L-shaped, and includes a positioning section 601 and a connecting section 602, the positioning section 601 is connected to the walking assembly frame 9, the connecting section 602 extends toward the direction approaching the revolving platform 10, the top plate 3 is connected to the connecting section 602, and a waist hole 6021 is formed along the length direction of the connecting section 602, so that the top plate 3 can move toward or away from the revolving platform 10.
Through the waist hole 6021 formed in the connecting section 602 of the L-shaped third positioning seat 6, the top plate 3 can move in the direction close to or away from the rotary platform 10 along the length direction of the waist hole 6021, so that the distance between the top plate 3 and the first trigger member 1 and the second trigger member 2 is adjustable, and the contact precision between the first trigger member 1 and the second trigger member 2 and the top plate 3 is further improved.
FIG. 6 is an exploded view of a stop member of the stop device according to an embodiment of the present invention; fig. 7 is a schematic structural view of a position limiting member in a position limiting device according to an embodiment of the present invention; fig. 8 is a schematic structural view of a limiting member in a second position in the limiting device according to the embodiment of the present invention.
As shown in fig. 1-8, the limiting device provided by the invention further comprises a limiting member 8 and a first limiting block 7; the limiting component 8 is arranged on one surface, facing the rotary platform 10, of the walking combined frame 9, extends towards the direction close to the rotary platform 10, and is arranged corresponding to the top plate 3; the number of the first limiting blocks 7 is two, and the two first limiting blocks 7 are arranged on one surface, facing the walking combined frame 9, of the rotary platform 10, correspond to the first triggering piece 1 and the second triggering piece 2 respectively, and are arranged in the direction approaching to the walking combined frame 9; after the first trigger 1 or the second trigger 2 contacts the top plate 3 and the rotary platform 10 continues to rotate, the first limit block 7 abuts against the limit member 8, so that the rotary platform 10 can stop rotating.
The first limiting blocks 7 are respectively arranged at the positions of the rotary platform 10 corresponding to the first trigger part 1 and the second trigger part 2, the position of the walking combination frame 9 corresponding to the top plate 3 is correspondingly provided with the limiting component 8, when the first trigger part 1 or the second trigger part 2 is in contact with the top plate 3 and the left rotary oil circuit or the right rotary oil circuit is not cut off, the rotary platform 10 drives the first trigger part 1 or the second trigger part 2 to continue rotating until the corresponding first limiting part is abutted against the limiting component 8, so that the rotary platform 10 can be stopped rotating, and the problem that the rotary platform 10 exceeds a limited rotary angle range is avoided to a certain extent.
Specifically, as shown in fig. 1 to 8, the limiting member 8 includes a mounting seat 801, a first connecting piece 803, and a second limiting block 802; the mounting seat 801 is arranged on the walking combined frame 9, a mounting groove 8011 is formed in the mounting seat 801, one end of the second limiting block 802 is embedded into the mounting groove 8011, and the first connecting piece 803 penetrates through the mounting seat 801 and the second limiting block 802, so that the second limiting block 802 is rotatably connected with the mounting seat 801.
The second limiting block 802 is rotatably connected with the mounting seat 801 through the first connecting piece 803, and when the excavator does not need to limit the rotation angle, the second limiting block 802 is rotated, so that one end, far away from the mounting seat 801, of the second limiting block 802 deviates from the rotation route of the first limiting block 7, and therefore the first limiting block 7 can be prevented from contacting with the second limiting block 802.
Further, as shown in fig. 1 to 8, the limiting member 8 further includes a second connecting member 804, the second connecting member 804 penetrates through the mounting seat 801 and the second limiting block 802, and is detachably connected to the mounting seat 801 and the second limiting block 802, so that the second limiting block 802 can be located at the first position or the second position.
The second limiting member that penetrates through the mounting base 801 is arranged on the mounting base 801, so that the second limiting member 802 can be limited, and the second limiting member 802 can be stably located at the first position or the second position.
In this application, the first position is the position where the second limiting member is in the upright state when the rotating platform 10 needs to limit the rotating angle, and the second position is the position where the second limiting member is in the falling state when the rotating platform 10 does not need to limit the rotating angle.
When the rotary platform 10 does not need to limit the rotation angle, the second connecting piece 804 is firstly detached, and after the second limiting block 802 is rotated, the second connecting piece 804 is installed on the installation base 801. Because the second connecting piece 804 runs through the mounting seat 801, therefore, can carry on spacingly to the second stopper 802, avoided because the vibrations of walking combined bay 9, lead to the second stopper 802 to be in the first position again, make the gyration of revolving platform 10 limited, damage the problem of first stopper 7 and second stopper 802 even.
It should be added that, in the present application, each of the first connecting element 803 and the second connecting element 804 includes a screw rod and a nut, the screw rod penetrates through the mounting seat 801 along the length direction of the mounting seat 801, and the nut is used for locking the screw rod, so that the screw rod is detachably connected with the mounting seat 801.
In addition, as shown in fig. 1 to 8, the present invention further provides an excavator, which includes the above-mentioned limiting device, a walking combined frame 9, a revolving device 11, a revolving platform 10, a left revolving oil path, a right revolving oil path and a control terminal; the rotating device 11 is arranged on the walking combined frame 9, the rotating platform 10 is arranged on the rotating device 11, and the rotating device 11 can drive the rotating platform 10 to rotate; the first trigger part 1 controls starting and stopping of an electromagnetic valve of the left rotary oil way, the second trigger part 2 controls starting and stopping of an electromagnetic valve of the right rotary oil way, and the control terminal is in communication connection with the first trigger part 1 and the second trigger part 2 to control starting and stopping of the first trigger part 1 and the second trigger part 2.
During the operation, the driver controls the start and stop of the first trigger part 1 and the second trigger part 2 through the control terminal in the cab, when the angle limit of the rotary platform 10 is needed, the first trigger part 1 and the second trigger part 2 are started, and the start and stop of the electromagnetic valve in the rotary oil way are controlled through the contact of the first trigger part 1 and the second trigger part 2 with the top plate 3.
When the rotation angle of the rotary platform 10 is not limited, the first trigger part 1 and the second trigger part 2 are closed through the control terminal, so that the first trigger part 1 and the second trigger part 2 cannot control the electromagnetic valve in the rotary oil path, and the rotary platform 10 can be driven to rotate at a full angle through the rotary device 11.
As shown in fig. 1 to 8, the excavator provided by the present invention further includes a switch for exchanging the rotation oil path controlled by the first trigger 1 and the second trigger 2.
Since the top plate 3 has a certain width in the present application, the angles of the left and right swing motions of the swing platform 10 are both less than 180 °.
Because first trigger 1 and second trigger 2 are symmetry axis symmetry setting along the line between the centre of a circle of revolving platform 10 and the axis of roof 3, therefore, the line between the centre of a circle of first trigger 1 and second trigger 2 and revolving platform 10, and the angle of the one side of orientation roof 3 is complementary with the angle of the one side that deviates from roof 3, if: the included angle between the connecting line between the first trigger piece 1 or the second trigger piece 2 and the circle center and the connecting line between the top plate 3 and the circle center is 60 degrees, and then the included angle between the connecting line between the first trigger piece 1 and the circle center and the connecting line between the second trigger piece 2 and the circle center is close to 240 degrees. When the range of the rotation angle needs to be enlarged, the second limiting block 802 is firstly positioned at the second position, the rotation platform 10 is rotated by 180 degrees, then the second limiting block 802 is positioned at the first position, and the rotation oil passages controlled by the first trigger part 1 and the second trigger part 2 are exchanged through the change-over switch, namely, the original first trigger part 1 controls the left rotation oil passage, the second trigger part 2 controls the right rotation oil passage, when the rotation platform 10 is rotated by 180 degrees, the first trigger part 1 controls the right rotation oil passage, and the second trigger part 2 controls the left rotation oil passage.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. A limiting device is used for an excavator and is characterized by comprising a first trigger piece, a second trigger piece and a top plate;
the top plate is arranged on one surface, facing the rotary platform of the excavator, of the walking combined frame of the excavator and extends towards the direction close to the rotary platform;
the first trigger part and the second trigger part are symmetrically arranged on one surface, facing the walking combined rack, of the rotary platform along the axis of the rotary platform, are positioned on two sides of the width direction of the top plate and are arranged at intervals with the top plate, so that the first trigger part and the second trigger part can rotate for a certain distance along with the rotary platform and then are in contact with the top plate;
the first trigger part and the second trigger part are respectively in communication connection with an electromagnetic valve in a left rotary oil path and an electromagnetic valve in a right rotary oil path of the excavator so as to control the on-off of the electromagnetic valves.
2. The limiting device according to claim 1, further comprising a first positioning seat and a second positioning seat, wherein the first positioning seat and the second positioning seat are both disposed on a surface of the rotating platform facing the walking assembly rack and are detachably connected to the rotating platform;
the first trigger piece and the first positioning seat are correspondingly arranged, and the second trigger piece and the second positioning seat are correspondingly arranged.
3. The limiting device according to claim 1, further comprising a third positioning seat, wherein the third positioning seat is disposed on a surface of the walking assembly frame facing the rotating platform, and the top plate is disposed corresponding to the third positioning seat.
4. The limiting device according to claim 3, wherein the third positioning seat is L-shaped and includes a positioning section and a connecting section, the positioning section is connected to the walking assembly rack, the connecting section extends toward the direction approaching the revolving platform, the top plate is connected to the connecting section, and a waist hole is formed along a length direction of the connecting section, so that the top plate can move toward or away from the revolving platform.
5. The spacing device of claim 1, further comprising a spacing member and a first spacing block;
the limiting component is arranged on one surface, facing the rotary platform, of the walking combined frame, extends towards the direction close to the rotary platform and is arranged corresponding to the top plate;
the number of the first limiting blocks is two, and the two first limiting blocks are arranged on one surface, facing the walking combined rack, of the rotary platform, correspond to the first triggering piece and the second triggering piece respectively, and are arranged in the direction approaching to the walking combined rack;
when the first trigger piece or the second trigger piece is contacted with the top plate and the rotary platform continues to rotate, the first limit block abuts against the limit component, so that the rotary platform can stop rotating.
6. The spacing device of claim 5, wherein said spacing member comprises a mounting base, a first connector and a second spacing block;
the mounting seat is arranged on the walking combined frame, a mounting groove is formed in the mounting seat, one end of the second limiting block is embedded into the mounting groove, and the first connecting piece penetrates through the mounting seat and the second limiting block, so that the second limiting block is rotatably connected with the mounting seat.
7. The stop device according to claim 6, wherein the stop member further comprises a second connector, the second connector penetrates through the mounting seat and the second stop block and is detachably connected with the mounting seat and the second stop block, so that the second stop block can be located at the first position or the second position.
8. A spacing device according to any of claims 1 to 7 wherein the first trigger member and the second trigger member are both travel switches.
9. An excavator, which is characterized by comprising the limiting device as claimed in any one of the claims 1 to 8, a walking combined frame, a slewing device, a slewing platform, a left slewing oil way, a right slewing oil way and a control terminal;
the rotating device is arranged on the walking combined frame, the rotating platform is arranged on the rotating device, and the rotating device can drive the rotating platform to rotate;
the first trigger part controls the starting and stopping of an electromagnetic valve of the left rotary oil way, the second trigger part controls the starting and stopping of an electromagnetic valve of the right rotary oil way, and the control terminal is in communication connection with the first trigger part and the second trigger part to control the starting and stopping of the first trigger part and the second trigger part.
10. The excavator of claim 9 further comprising a switch for switching the swing oil path controlled by the first trigger and the second trigger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010968104.7A CN111945816A (en) | 2020-09-15 | 2020-09-15 | Limiting device and excavator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010968104.7A CN111945816A (en) | 2020-09-15 | 2020-09-15 | Limiting device and excavator |
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| Publication Number | Publication Date |
|---|---|
| CN111945816A true CN111945816A (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010968104.7A Pending CN111945816A (en) | 2020-09-15 | 2020-09-15 | Limiting device and excavator |
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| Country | Link |
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| CN (1) | CN111945816A (en) |
Cited By (1)
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| CN113235690A (en) * | 2021-05-28 | 2021-08-10 | 三一重机有限公司 | Gyration stop device, gyration subassembly and operation machinery |
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