CN217557042U - Work device and work machine - Google Patents
Work device and work machine Download PDFInfo
- Publication number
- CN217557042U CN217557042U CN202221334071.1U CN202221334071U CN217557042U CN 217557042 U CN217557042 U CN 217557042U CN 202221334071 U CN202221334071 U CN 202221334071U CN 217557042 U CN217557042 U CN 217557042U
- Authority
- CN
- China
- Prior art keywords
- connecting frame
- frame
- driving cylinder
- cylinder
- reference point
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Operation Control Of Excavators (AREA)
Abstract
The utility model relates to the technical field of engineering machinery, and provides a working device and an operation machine, wherein the working device comprises a first connecting frame, a second connecting frame and a driving cylinder, the first end of the second connecting frame is rotationally connected with the second end of the first connecting frame, the connection point of the first end of the second connecting frame and the second end of the first connecting frame is a reference point, and the two ends of the driving cylinder are respectively rotationally connected with the first connecting frame and the second connecting frame; the distance between the connection point of the first connection frame with the first end of the drive cylinder and the reference point is adjustable and/or the distance between the connection point of the second connection frame with the second end of the drive cylinder and the reference point is adjustable. So set up, the problem of the loader among the prior art can't satisfy the different demands to lift force and lifting speed under heavy load operating mode and the light load operating mode simultaneously has been solved.
Description
Technical Field
The utility model relates to an engineering machine tool technical field especially relates to a working device and operation machinery.
Background
The loader is an engineering machine mainly used for shoveling, loading, transporting, digging and other operations on loose and accumulated materials, and has the advantages of high operation speed, high efficiency, light operation and the like. The loader mainly changes the length of a boom cylinder to raise or lower a boom and a bucket.
Under the heavy-load working condition, the movable arm is required to have a larger lifting force, and under the light-load working condition, the movable arm is required to have a larger lifting speed, so that the optimal working efficiency matching is achieved. In the loader in the prior art, the maximum lifting force and the lifting speed of the movable arm are fixed values no matter the loader is under a heavy-load working condition or a light-load working condition, so that different requirements under the heavy-load working condition and the light-load working condition cannot be met, and the working efficiency of the loader is limited.
Therefore, how to solve the problem that the loader in the prior art cannot meet different requirements on the lifting force and the lifting speed under the heavy-load working condition and the light-load working condition at the same time becomes an important technical problem to be solved by technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The utility model provides a working device and operation machinery for the loader of solving among the prior art can't satisfy simultaneously the defect to the lift and the different demands of speed of lifting under heavy load operating mode and the underloading operating mode.
The utility model provides a working device, which comprises a first connecting frame, a second connecting frame and a driving cylinder, wherein the first end of the second connecting frame is rotatably connected with the second end of the first connecting frame, the connection point of the first end of the second connecting frame and the second end of the first connecting frame is a reference point, and the two ends of the driving cylinder are respectively rotatably connected with the first connecting frame and the second connecting frame;
the distance between the reference point and the connection point of the first connecting frame and the first end of the driving cylinder is adjustable, and/or the distance between the reference point and the connection point of the second connecting frame and the second end of the driving cylinder is adjustable.
According to the utility model provides a pair of working device, the first end of actuating cylinder with first link sliding connection, in order to be close to or keep away from the reference point, working device still includes the driving piece, the driving piece sets up to order about the first end of actuating cylinder for first link slides, and can when the first end of actuating cylinder slides to the target location, retrain the first end of actuating cylinder with the relative position of first link.
According to the utility model provides a pair of working device, the driving piece is hydraulic cylinder, hydraulic cylinder's one end with first link is connected, the other end with the first end of driving cylinder is rotated and is connected.
According to the utility model provides a pair of working device, hydraulic cylinder's axis with the first end of driving cylinder for the coincidence of the slip orbit of first link, and all with the reference point is located same straight line.
According to the utility model provides a pair of working device, be provided with the bar hole on the first link, the extending direction in bar hole with the reference point is located same straight line, the first end of driving cylinder through first connecting axle with first link is connected, first connecting axle sets up to following the extending direction in bar hole slides, first connecting axle with one in the first end of driving cylinder with the output of driving piece is connected.
According to the utility model provides a pair of working device, be provided with two at least connection positions, each on the first link connection position interval distribution, and each the connection position with distance between the reference point is different, the first end of driving cylinder set up to selectively with one of them the connection position is connected.
According to the utility model provides a pair of working device, each the link bit with the reference point is located same straight line.
According to the utility model provides a pair of working device, the junction is for setting up through-hole on the first link, the first end of driving cylinder pass through the second connecting axle with first link is connected.
According to the working device provided by the utility model, the first connecting frame is a frame, and the second connecting frame is a movable arm;
or the first connecting frame is a movable arm, and the second connecting frame is a bucket rod.
The utility model also provides an operation machine, including foretell work device.
The utility model provides a working device, including first link, second link and driving cylinder, the first end of second link is connected with the second end rotation of first link, and the both ends of driving cylinder rotate with first link and second link respectively and are connected. The distance between the connecting point of the first end of the second connecting frame and the first end of the driving cylinder and the reference point is adjustable, and/or the distance between the connecting point of the second connecting frame and the second end of the driving cylinder and the reference point is adjustable. Under the heavy-load working condition, the distance between the connecting point of the first connecting frame and the first end of the driving cylinder and the reference point can be increased, and/or the distance between the connecting point of the second connecting frame and the second end of the driving cylinder and the reference point can be increased, so that the force arm of the driving force of the driving cylinder to the second connecting frame is increased, and the lifting force to the second connecting frame is increased. Under the light-load working condition, the distance between the first connecting frame and the connecting point and the reference point of the first end of the driving cylinder can be reduced, and/or the distance between the second connecting frame and the connecting point and the reference point of the second end of the driving cylinder is reduced, so that the influence degree of the length change of the driving cylinder on the change of the included angle between the first connecting frame and the second connecting frame is enhanced, the rotating speed of the second connecting frame relative to the first connecting frame is increased, and the lifting speed of the second connecting frame is improved. With this arrangement, the first link corresponds to a frame, the second link corresponds to a boom, and the drive cylinder corresponds to a boom cylinder. According to the working condition of the loader, the connecting position of the movable arm oil cylinder on the rack and/or the connecting position of the movable arm oil cylinder on the movable arm can be adjusted, so that the movable arm of the loader has higher lifting force under the heavy-load working condition, and has higher lifting speed under the light-load working condition, the loader can run at high efficiency under different working conditions, and the problem that the loader in the prior art cannot meet different requirements on the lifting force and the lifting speed under the heavy-load working condition and the light-load working condition at the same time is solved.
Further, the present invention provides a working machine including the working device described above, and therefore, having various advantages as described above.
Drawings
In order to more clearly illustrate the technical solutions of the present invention or the prior art, the drawings needed to be 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 for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a first end of a driving cylinder of a working device provided by the present invention when slidably connected to a first connecting frame;
fig. 2 is a schematic view of the force arm when the first connecting frame of the working device provided by the present invention is provided with two connecting positions and the first end of the driving cylinder is connected with the first connecting position;
fig. 3 is a schematic diagram of the force arm when the first connecting frame of the working device provided by the present invention is provided with two connecting positions, and the first end of the driving cylinder is connected with the second connecting position.
Reference numerals are as follows:
1: a first link frame; 2: a second link frame; 3: a drive cylinder; 4: a drive member; 5: a strip-shaped hole; 6: a first connecting shaft; 7: a first connection site; 8: a second connection bit; 9: and a second connecting shaft.
Detailed Description
To make the objects, technical solutions and advantages of the present invention clearer, the drawings of the present invention are combined to clearly and completely describe the technical solutions of the present invention, and obviously, the described embodiments are some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The working device of the present invention will be described with reference to fig. 1 to 3.
As shown in fig. 1 to 3, the working device provided by the embodiment of the present invention includes a first connecting frame 1, a second connecting frame 2 and a driving cylinder 3. Specifically, the first end of the second connecting frame 2 is rotatably connected to the second end of the first connecting frame 1, and the two ends of the driving cylinder 3 are rotatably connected to the first connecting frame 1 and the second connecting frame 2, respectively.
The driving cylinder 3 can be an oil cylinder, an air cylinder or an electric cylinder, and in general, the oil cylinder is selected as the driving cylinder 3.
In the working device, during working, the rotation axis of the second connecting frame 2 relative to the first connecting frame 1, the rotation axis of the driving cylinder 3 relative to the first connecting frame 1 and the rotation axis of the driving cylinder 3 relative to the second connecting frame 2 are all arranged along the horizontal direction.
The connecting point of the first end of the second connecting frame 2 and the second end of the first connecting frame 1 is a reference point, the distance between the connecting point of the first connecting frame 1 and the first end of the driving cylinder 3 and the reference point is adjustable, and/or the distance between the connecting point of the second connecting frame 2 and the second end of the driving cylinder 3 and the reference point is adjustable.
Under the heavy load operating mode, can increase the distance between the tie point and the reference point of first link 1 and the first end of actuating cylinder 3, and/or, increase the distance between the tie point and the reference point of the second end of second link 2 and actuating cylinder 3 to increase the arm of force of actuating cylinder 3 to the drive power of second link 2, thereby increased the lift to second link 2, promoted equipment's the biggest bearing capacity, can lift heavier goods.
Under the light load working condition, the distance between the connecting point of the first connecting frame 1 and the first end of the driving cylinder 3 and the reference point can be reduced, and/or the distance between the connecting point of the second connecting frame 2 and the second end of the driving cylinder 3 and the reference point can be reduced, so that the influence degree of the length change of the driving cylinder 3 on the change of the included angle between the first connecting frame 1 and the second connecting frame 2 is enhanced, namely, when the length change of the driving cylinder 3 has the same value, the change value of the included angle between the first connecting frame 1 and the second connecting frame 2 is increased, so that the rotating speed of the second connecting frame 2 relative to the first connecting frame 1 is increased, the lifting speed of the second connecting frame 2 is increased, more cargos can be shoveled and transported in the same time, and the working efficiency is improved.
In this arrangement, the first link 1 corresponds to a frame, the second link 2 corresponds to a boom, and the drive cylinder 3 corresponds to a boom cylinder in the loader. According to the working condition of the loader, the connecting position of the movable arm oil cylinder on the rack and/or the connecting position of the movable arm oil cylinder on the movable arm can be adjusted, so that the movable arm of the loader has higher lifting force under the heavy-load working condition, and has higher lifting speed under the light-load working condition, the loader can run at high efficiency under different working conditions, and the problem that the loader in the prior art cannot meet different requirements on the lifting force and the lifting speed under the heavy-load working condition and the light-load working condition at the same time is solved.
For a loader, the first connecting frame 1 may be a frame, and correspondingly, the second connecting frame 2 may be a boom.
For an excavator, the first connecting frame 1 may be a frame, and correspondingly, the second connecting frame 2 may be a boom; the first link 1 may be a boom, and correspondingly, the second link 2 may be an arm.
In some embodiments, at least two connection sites are provided on the first connecting frame 1 for connection with the first end of the driving cylinder 3. The connection positions are distributed at intervals, the distances between the connection positions and the reference point are different, and the first end of the driving cylinder 3 is selectively connected with one of the connection positions.
Hereinafter, the lifting force and the lifting speed of the second link 2 are analyzed by taking the example of providing two link positions on the first link 1.
When the driving cylinder 3 drives the second connecting frame 2 to rotate relative to the first connecting frame 1, the direction of the acting force of the driving cylinder 3 on the second connecting frame 2 is consistent with the axis of the driving cylinder 3. The distance between the reference point and the axis of the driving cylinder 3 is a moment arm of the acting force of the driving cylinder 3 on the second connecting frame 2, and the moment generated by the acting force of the driving cylinder 3 on the second connecting frame 2 is the product of the magnitude of the acting force of the driving cylinder 3 on the second connecting frame 2 and the magnitude of the moment arm.
The connection position on the first connection frame 1 close to the reference point is a first connection position 7, and the connection position on the first connection frame 1 far away from the reference point is a second connection position 8.
When the included angle between the first connecting frame 1 and the second connecting frame 2 is the same, and the acting force of the driving cylinder 3 on the second connecting frame 2 is the same, the first end of the driving cylinder 3 is connected to the first connecting position 7, and the force arm L of the acting force on the second connecting frame 2 is 1 A moment arm L of an acting force to the second connecting frame 2 when the first end of the driving cylinder 3 is connected at the second connecting position 8 2 Refer to fig. 2 and 3. So when the first end of actuating cylinder 3 is connected at first hookup location 7, moment to second link 2 production is less than the first end of actuating cylinder 3 and connects when second hookup location 8, to the moment of second link 2 production, promptly, when the first end of actuating cylinder 3 is connected at second hookup location 8, the lift force of second link 2 is bigger, more is applicable to the heavy load operating mode.
According to trigonometric function and differential calculation and other related knowledge, the change rate of the included angle between the second connecting frame 2 and the first connecting frame 1 along with the extension and retraction of the driving cylinder 3 in the extension and retraction action process of the driving cylinder 3 can be calculated and deduced, the larger the distance between the connecting point of the first connecting frame 1 and the first end of the driving cylinder 3 and the reference point is, the smaller the change rate of the included angle between the second connecting frame 2 and the first connecting frame 1 in the extension and retraction action process of the driving cylinder 3 is, namely, the smaller the rotation speed of the second connecting frame 2 relative to the first connecting frame 1 is.
If the length of the driving cylinder 3 is the same in the above two cases, when the first end of the driving cylinder 3 is connected to the first connecting position 7, the change value of the included angle between the first connecting frame 1 and the second connecting frame 2 is larger than the change value of the included angle between the first connecting frame 1 and the second connecting frame 2 when the first end of the driving cylinder 3 is connected to the second connecting position 8. Therefore, when the first end of the driving cylinder 3 is connected to the first connecting position 7, the lifting speed of the second connecting frame 2 is higher, and the lifting device is more suitable for light-load working conditions.
When the working condition of the loader changes, if the loader needs to work under a heavy-load working condition, the first end of the movable arm oil cylinder is connected with the connecting position, far away from the reference point, on the rack, so that the movable arm has high lifting force. If the loader needs to work under a light-load working condition, the first end of the movable arm oil cylinder is connected with a connecting position, which is closer to the reference point, on the rack, so that the movable arm has higher lifting speed.
And determining the connection position of the first end of the movable arm oil cylinder on the rack according to the specific working condition, and connecting the first end of the movable arm oil cylinder to the corresponding position on the rack.
In this embodiment, the connecting position is a through hole provided on the first connecting frame 1, and the first end of the driving cylinder 3 is hinged to the first connecting frame 1 by the second connecting shaft 9.
The respective connection bits and the reference point may be arranged on the same line.
In other embodiments, the first end of the driving cylinder 3 is slidably connected to the first connecting frame 1, and when the first end of the driving cylinder 3 slides relative to the first connecting frame 1, the first end of the driving cylinder 3 can approach or move away from the reference point.
With the first end and the first link 1 sliding connection of actuating cylinder 3, can realize the infinitely variable control to the distance between the tie point of first link 1 and the first end of actuating cylinder 3 and the reference point, can be according to the concrete demand of bearing of heavily loaded operating mode and light load operating mode, adjust the sliding position of the first end on first link 1 of actuating cylinder 3.
The working device further comprises a driving member 4, wherein the driving member 4 is arranged between the first end of the driving cylinder 3 and the first connecting frame 1, and is used for driving the first end of the driving cylinder 3 to slide relative to the first connecting frame 1, and when the first end of the driving cylinder 3 slides to a target position, the relative position of the first end of the driving cylinder 3 and the first connecting frame 1 can be restrained, so that the distance between the reference point and the connecting point of the first connecting frame 1 and the first end of the driving cylinder 3 is kept constant.
When the working condition of the loader changes, the connecting position of the first end of the movable arm oil cylinder on the frame is determined according to the specific working condition, the position of the first end of the movable arm oil cylinder can be adjusted by controlling the operation of the driving piece 4, the operation is convenient and fast, and the labor intensity of operators is low.
In a specific embodiment, the driving element 4 may be a hydraulic cylinder, such that a cylinder end of the hydraulic cylinder is connected to the first connecting frame 1, and a rod end of the piston is rotatably connected to the first end of the driving cylinder 3. The telescopic action of the hydraulic oil cylinder can drive the first end of the driving cylinder 3 to slide relative to the first connecting frame 1.
Since the boom cylinder of the loader is generally a cylinder, the driving unit 4 may be a hydraulic cylinder and may share a hydraulic system with the boom cylinder, which is advantageous for reducing the cost.
The axis of the hydraulic oil cylinder is superposed with the sliding track of the first end of the driving cylinder 3 relative to the first connecting frame 1, and the axis and the sliding track are positioned on the same straight line with the reference point. The telescopic direction of the hydraulic oil cylinder is the direction that the first end of the driving cylinder 3 is close to or far away from the reference point, so that the efficiency of adjusting the position of the first end of the driving cylinder 3 is improved, the length requirement on the hydraulic oil cylinder is reduced, and the cost of the working device is reduced.
In an alternative embodiment, the driving member 4 may be configured as a screw nut transmission assembly, so that two ends of the screw are rotatably connected to the first connecting frame 1, and the axis of the screw and the reference point are located on the same straight line. The nut is connected with the screw rod in a matching way and can only slide along the axial direction of the screw rod relative to the first connecting frame 1. The first end of the driving cylinder 3 is connected with a nut. The nut can drive the first end of the driving cylinder 3 to be close to or far away from the reference point by driving the screw rod to rotate relative to the first connecting frame 1 through the motor.
In this embodiment, a strip-shaped hole 5 is provided on the first connecting frame 1, referring to fig. 1, the extending direction of the strip-shaped hole 5 and the reference point are located on the same straight line, and the first connecting shaft 6 penetrates through the strip-shaped hole 5 and the first end of the driving cylinder 3 at the same time, so that the first end of the driving cylinder 3 is hinged to the first connecting frame 1. A gap is formed between the first connecting shaft 6 and the side wall of the strip-shaped hole 5, so that the first connecting shaft 6 can slide along the extending direction of the strip-shaped hole 5.
It should be noted that, when second link 2 bore, the lateral wall in bar hole 5 supports the first end of actuating cylinder 3 through first connecting axle 6, and so, the clearance between the lateral wall of first connecting axle 6 and bar hole 5 should not be too big, guarantee that first connecting axle 6 can slide in bar hole 5 can.
One of the first connecting shaft 6 and the first end of the driving cylinder 3 is connected to the output end of the driving member 4, and when the driving member 4 is a hydraulic cylinder, the rod end of the hydraulic cylinder may be connected to the first connecting shaft 6.
The structural principle of the position adjustable connection point between the second end of the driving cylinder 3 and the second connecting frame 2 is similar to the structural principle of the position adjustable connection point between the first end of the driving cylinder 3 and the first connecting frame 1, and the description is omitted here.
On the other hand, the embodiment of the utility model provides a still provide a working machine, including the equipment that any above-mentioned embodiment provided. The working device in the embodiment can not only have higher lifting force under the heavy-load working condition, but also have higher lifting speed under the light-load working condition. Therefore, the working machine in the embodiment has higher working efficiency under different working conditions. The embodiment of the utility model provides an in the beneficial effect of operation machinery derive the process similar with the derivation process of above-mentioned equipment's beneficial effect roughly, and it is no longer repeated here.
The working machine in the present embodiment may be, but is not limited to, a construction machine such as a loader or an excavator.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (10)
1. A working device is characterized by comprising a first connecting frame, a second connecting frame and a driving cylinder, wherein the first end of the second connecting frame is rotatably connected with the second end of the first connecting frame, the connection point of the first end of the second connecting frame and the second end of the first connecting frame is a reference point, and two ends of the driving cylinder are respectively rotatably connected with the first connecting frame and the second connecting frame;
the distance between the connection point of the first connection frame and the first end of the driving cylinder and the reference point is adjustable, and/or the distance between the connection point of the second connection frame and the second end of the driving cylinder and the reference point is adjustable.
2. The work apparatus of claim 1, wherein the first end of the drive cylinder is slidably coupled to the first linkage frame to move toward or away from the reference point, the work apparatus further comprising a drive member configured to drive the first end of the drive cylinder to slide relative to the first linkage frame and to constrain the position of the first end of the drive cylinder relative to the first linkage frame when the first end of the drive cylinder slides to the target position.
3. The work apparatus as claimed in claim 2, wherein said drive member is a hydraulic cylinder having one end connected to said first link and the other end pivotally connected to said first end of said drive cylinder.
4. The working device according to claim 3, wherein the axis of the hydraulic cylinder coincides with the sliding trajectory of the first end of the driving cylinder relative to the first link frame and is on the same line as the reference point.
5. The working device according to claim 2, wherein the first connecting frame is provided with a strip-shaped hole, the extension direction of the strip-shaped hole is aligned with the reference point, the first end of the driving cylinder is connected with the first connecting frame through a first connecting shaft, the first connecting shaft is arranged to be capable of sliding along the extension direction of the strip-shaped hole, and one of the first connecting shaft and the first end of the driving cylinder is connected with the output end of the driving member.
6. The working device according to claim 1, wherein the first connecting frame is provided with at least two connecting positions, each connecting position is distributed at intervals, the distance between each connecting position and the reference point is different, and the first end of the driving cylinder is selectively connected with one of the connecting positions.
7. The work device of claim 6, wherein each of said attachment locations is collinear with said reference point.
8. The working device as claimed in claim 6, wherein the connection site is a through hole provided on the first link frame, and the first end of the driving cylinder is connected to the first link frame through a second link shaft.
9. The working device according to claim 1, wherein the first link is a vehicle frame, and the second link is a boom;
or the first connecting frame is a movable arm, and the second connecting frame is a bucket rod.
10. A working machine, characterized by comprising a working device according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221334071.1U CN217557042U (en) | 2022-05-30 | 2022-05-30 | Work device and work machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221334071.1U CN217557042U (en) | 2022-05-30 | 2022-05-30 | Work device and work machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217557042U true CN217557042U (en) | 2022-10-11 |
Family
ID=83498848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221334071.1U Active CN217557042U (en) | 2022-05-30 | 2022-05-30 | Work device and work machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217557042U (en) |
-
2022
- 2022-05-30 CN CN202221334071.1U patent/CN217557042U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112049656A (en) | Crank arm type tunneling and anchoring all-in-one machine with random support and hydraulic control system | |
| US10400426B2 (en) | Hydraulic control system for construction machine | |
| CN110195449B (en) | Attachment for stabilizer of digging shovel | |
| CN107299653A (en) | Wing drop is controlled | |
| KR101844210B1 (en) | A tilting device for excavator bucket | |
| CN217557042U (en) | Work device and work machine | |
| US20240133155A1 (en) | Backhoe loader for efficient digging | |
| CN212294794U (en) | Angle-adjustable translational lifting machine | |
| US3929239A (en) | Backhoe actuator | |
| CN108716230B (en) | engineering vehicle | |
| EP0077684B1 (en) | Earthmoving machine | |
| DE10012389A1 (en) | Working machine, e.g. front-end loader, has hydraulic functions connected according to their kinematics relationship stored in controller memory | |
| CN212101889U (en) | Novel multifunctional semi-automatic machine | |
| CN210264514U (en) | Movable engineering drilling machine chassis | |
| CN210946964U (en) | Rock breaking device and rock breaking machine | |
| CN111997114A (en) | Angle-adjustable translational lifting machine | |
| CN220953626U (en) | Excavator counterweight structure | |
| CN220500840U (en) | Loading vehicle with changeable gravity center | |
| CN110512684A (en) | A kind of broken rock device and broken rock machine | |
| KR200149132Y1 (en) | Variable capacity bucket for heavy equipment | |
| CN111392654B (en) | Novel multifunctional semi-automatic machine tool | |
| US5004397A (en) | Attachment holder for interchangeable equipment on the superstructure of a mobile shovel excavator | |
| CN218231622U (en) | Counterweight displacement device and operating machine | |
| CN113502860B (en) | Working device of 11-rod 2-degree-of-freedom loader | |
| CN110259384B (en) | Movable engineering driller chassis |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |