CN217053559U - Movable arm oil cylinder limiting mechanism, movable arm assembly and operation machine - Google Patents
Movable arm oil cylinder limiting mechanism, movable arm assembly and operation machine Download PDFInfo
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- CN217053559U CN217053559U CN202220714212.6U CN202220714212U CN217053559U CN 217053559 U CN217053559 U CN 217053559U CN 202220714212 U CN202220714212 U CN 202220714212U CN 217053559 U CN217053559 U CN 217053559U
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Abstract
The utility model relates to an operation machinery maintenance field provides a swing arm hydro-cylinder stop gear, movable arm assembly and operation machinery, and wherein, swing arm hydro-cylinder stop gear includes: an opening is formed in the length direction of the rod body, and the opening is used for sleeving a telescopic rod of the oil cylinder with the rod body; the first mounting hole is formed in one end of the rod body; the other end of the rod body is switched to be connected with or detached from the movable arm based on the working state of the movable arm. Be used for solving among the prior art operation machinery maintenance process complex operation's defect, the utility model provides a swing arm hydro-cylinder stop gear sets up first mounting hole through body of rod one end and is used for the telescopic link rotatable coupling with the hydro-cylinder, the other end of the body of rod is under the non-maintenance state at the swing arm, the body of rod is connected with the swing arm, be in under the maintenance state at the swing arm, the body of rod is dismantled with the swing arm, the body of rod is established on the telescopic link of hydro-cylinder through the opening cover, be used for carrying on spacingly to the returning of telescopic link, simplify operation maintenance operation, promote swing arm hydro-cylinder stop gear's dismantlement and the convenience of installation.
Description
Technical Field
The utility model relates to an operation machinery maintenance technical field especially relates to a swing arm hydro-cylinder stop gear, movable arm assembly and operation machinery.
Background
At present, when an operation machine such as a skid-steer loader is overhauled, a safety rod can be manually placed and fixed on a telescopic rod of an oil cylinder, so that a movable arm is prevented from descending under the action of gravity when an oil pipe returns oil, and the safety problem of maintenance personnel is avoided.
The safety rod that current is used for spacing swing arm generally deposits in the toolbox, or on fastening and other frame parts, need additionally take during the use, and the operation machine overhauls process complex operation for the safety rod installation is dismantled not conveniently from the hydro-cylinder to be accomodate to the completion of the use.
SUMMERY OF THE UTILITY MODEL
The utility model provides a swing arm hydro-cylinder stop gear, movable arm assembly and operation machinery for solve among the prior art operation machinery maintenance process complex operation, the inconvenient defect is dismantled in the installation of safety lever, realize that body of rod one end is connected with the hydro-cylinder through first mounting hole is rotatable, other end detachable is connected with the swing arm, under non-maintenance state, the body of rod is connected with the swing arm, under the maintenance state, the body of rod is dismantled with the swing arm, the body of rod cover is established on the hydro-cylinder, simplify and overhaul spacing process.
The utility model provides a swing arm hydro-cylinder stop gear, include:
the telescopic rod comprises a rod body, wherein an opening is formed in the length direction of the rod body, the opening is used for sleeving a telescopic rod of an oil cylinder of the movable arm with the rod body, and the inner width of the rod body is larger than the diameter of the telescopic rod;
the first mounting hole is formed in one end of the rod body and is used for being rotatably connected with the movable arm;
and the other end of the rod body is switched to be connected with or detached from the movable arm based on the working state of the movable arm.
According to the utility model provides a swing arm hydro-cylinder stop gear still includes the retaining member, the second mounting hole has been seted up to the body of rod the swing arm is in under the non-maintenance state, the retaining member with the second mounting hole is connected, will the body of rod with the connection can be dismantled to the swing arm.
According to the utility model provides a swing arm hydro-cylinder stop gear, the third mounting hole has been seted up to the body of rod the swing arm is in under the maintenance state, the retaining member with the third mounting hole is connected, be used for with the body of rod with the telescopic link of hydro-cylinder is connected.
According to the utility model provides a swing arm hydro-cylinder stop gear still includes the lift bar, the one end of lift bar with body of rod rotatable coupling, the other end of lift bar be used for with the telescopic link contact of hydro-cylinder, and with the cylinder body of hydro-cylinder is spacing.
According to the utility model provides a swing arm hydro-cylinder stop gear, the lifting rod with the one end of telescopic link contact is face of cylinder or sphere.
The utility model also provides a movable arm assembly, which comprises a movable arm, an oil cylinder and the movable arm oil cylinder limiting mechanism;
the telescopic rod of the oil cylinder and the first mounting hole of the rod body are rotatably connected to the movable arm, and the other end of the rod body is detachably connected with the movable arm.
According to the utility model provides a movable arm assembly, the body of rod first mounting hole with the hydro-cylinder telescopic link rotatable coupling.
According to the utility model provides a movable arm assembly, be provided with the mount pad on the swing arm, the fourth mounting hole has been seted up to the mount pad, the body of rod with fourth mounting hole round pin hub connection.
According to the utility model provides a movable arm assembly, install the rubber sleeve in the fourth mounting hole.
The utility model also provides an operating machine, which comprises the movable arm oil cylinder limiting mechanism;
alternatively, the work machine includes the above boom assembly.
The utility model provides a swing arm hydro-cylinder stop gear sets up first mounting hole through body of rod one end and is used for the telescopic link rotatable coupling with the hydro-cylinder, the other end of the body of rod is under the swing arm is in non-maintenance state, the body of rod is connected with the swing arm, under the swing arm is in maintenance state, the body of rod is dismantled with the swing arm, the body of rod is established on the telescopic link of hydro-cylinder through the opening cover, a retraction for to the telescopic link is carried on spacingly, guarantee the safety of swing arm maintenance state, simplify the operation maintenance operation, promote swing arm hydro-cylinder stop gear's dismantlement and the convenience of installation.
Further, the present invention provides a boom unit and a working machine that have the above-described boom cylinder stopper mechanism, and therefore have various advantages as described above.
Drawings
In order to illustrate the technical solutions of the present invention or the prior art more clearly, the drawings used in the following embodiments or the description of the prior art will be briefly described, 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 a schematic view of a boom structure of a working machine according to the present invention in a stopped state;
fig. 2 is a schematic structural view of a limiting mechanism of a movable arm cylinder in a non-maintenance state according to the present invention;
fig. 3 is a schematic structural diagram of a limiting mechanism of a boom cylinder provided by the present invention;
fig. 4 is a sectional view of the mounting state of the movable arm mounting base provided by the present invention;
fig. 5 is a schematic view of a state of the movable arm in a maintenance state;
fig. 6 is a schematic structural view of a limiting mechanism of a movable arm cylinder in a maintenance state;
fig. 7 is a schematic view of a structure of a movable arm after maintenance provided by the present invention;
fig. 8 is a schematic view of the working state of the lifting rod provided by the present invention.
Reference numerals:
100: a movable arm oil cylinder limiting mechanism; 110: a rod body; 120: a pin shaft; 130: a lifting lever;
101: an opening; 102: a first mounting hole; 103: a second mounting hole; 104: a third mounting hole; 105: a fifth mounting hole; 106: a sixth mounting hole;
200: a movable arm; 210: an oil cylinder; 220: a connecting plate; 230: a mounting seat; 201: a telescopic rod; 202: a cylinder body; 231: a rubber sleeve; 232: and a fourth mounting hole.
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 of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.
In the description of the embodiments of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the embodiments of the present invention and simplifying the description, but do not indicate or imply that the device or element to which the description refers must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" should be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the embodiments of the present invention can be understood in specific cases by those skilled in the art.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of an embodiment of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Embodiments of the present invention will be described with reference to fig. 1 to 8. It is to be understood that the following description is only exemplary of the present invention and is not intended to limit the present invention.
As shown in fig. 1 to 3, the utility model provides a movable arm cylinder stop gear 100, include: the boom cylinder limiting mechanism 100 includes a hollow rod body 110 and a first mounting hole 102 formed in the rod body 110, wherein the first mounting hole 102 is used for rotatably connecting one end of the rod body 110 to a boom 200, and one end of the rod body 110 is detachably connected to the boom 200 in a non-maintenance state of the boom 200, so that the boom cylinder limiting mechanism 100 does not limit the boom 200 and a cylinder 210 in a parking state and normal lifting and dropping of the boom 200. When the movable arm 200 is in a maintenance state, the detachable connection end of the rod body 110 and the movable arm 200 is disconnected, the rod body 110 is sleeved on the telescopic rod 201 of the oil cylinder 210, and the retraction of the oil cylinder 210 is limited, so that the movable arm 200 is prevented from descending under the action of gravity when oil returns from an oil pipe when the movable arm 200 is in the maintenance state, and the safety problem of maintenance personnel is caused.
In the maintenance state, the entire work machine may be maintained, or the boom 200 may be maintained. In the non-maintenance state, that is, the work machine is normally operated or stopped, that is, the boom is normally operated or stopped.
As shown in fig. 3, specifically, an opening 101 is formed in the length direction of the rod body 110, the opening 101 is used for the rod body 110 to be sleeved on the oil cylinder 210, for example, sleeved on the telescopic rod 201 of the oil cylinder 210, and the inner width of the rod body 110 is greater than the diameter of the telescopic rod 201; the other end of the rod body 110 is switched to be coupled to or uncoupled from the boom 200 based on the working state of the boom 200.
In other words, after the rod body 110 is fitted over the telescopic rod 201 through the opening 101, the rod body 110 cannot go over the cylinder body 202, thereby restricting the retraction of the telescopic rod 201. For example, the rod body 110 is a quadrangular prism, one surface of the quadrangular prism facing the oil cylinder 210 is provided with an opening 101, the length direction of the quadrangular prism is consistent with the extending direction of the telescopic rod 201, the width of the inner wall of the quadrangular prism is larger than the diameter of the telescopic rod 201, and the telescopic rod 201 can be arranged in the rod body 110.
In addition, for another embodiment of the rod body 110, the inner width of the rod body 110 is larger than the diameter of the telescopic rod 201 and smaller than the diameter of the cylinder body 202 of the oil cylinder 210. The stress surface is larger and more stable. Further, with respect to the connection relationship of the rod body 110 and the boom 200, the first mounting hole 102 of the rod body 110 may be connected with the boom 200 and the cylinder 210; or the first mounting hole 102 is rotatably connected with the connecting plate 220, or the first mounting hole 102 is rotatably connected with a bracket arranged on the movable arm 200, so that the effect that the first mounting hole 102 of the rod body 110 rotates around the movable arm 200 is achieved. Wherein, the movable arm 200 is hinged with the oil cylinder 210 through a connecting plate 220.
In other embodiments of the present invention, the first mounting hole 102 of the rod body 110 is rotatably connected to the extension rod 201 of the cylinder 210. That is, the first mounting hole 102 is used to hinge one end of the stick body 110 to the telescopic rod 201 of the cylinder 210.
The first mounting hole 102 is formed in one end of the rod body 110, and the first mounting hole 102 is used for being rotatably connected with the oil cylinder 210; wherein, when the movable arm 200 is in a non-maintenance state, the other end of the rod body 110 is used for being detachably connected with the movable arm 200. When the movable arm 200 is in a maintenance state, the movable arm 200 is detached from the rod 110, and the rod 110 is sleeved on the telescopic rod 201. Therefore, when the movable arm 200 is maintained, the movable arm oil cylinder limiting mechanism 100 does not need to be taken out and taken separately for placement; after the overhaul is finished, the movable arm oil cylinder limiting mechanism 100 does not need to be taken down for storage. The overhaul process of the movable arm 200 is simplified, and the safety is improved.
With reference to fig. 3, in an embodiment of the present invention, the boom cylinder limiting mechanism 100 further includes a locking member, the rod 110 has a second mounting hole 103, and the locking member is connected to the second mounting hole 103 when the boom 200 is in the non-maintenance state, so as to detachably connect the rod 110 to the boom 200.
Specifically, in some embodiments of the present invention, the locking member includes a pin 120 and a snap ring, and the snap ring is disposed at two ends of the pin 120. The snap ring is of an elastic opening 101 structure, the pin shaft 120 can be quickly opened or clamped, the pin shaft 120 penetrates through the second mounting hole 103 and the holes of the mounting seat 230 on the movable arm 200, the two ends of the pin shaft 120 are arranged through the snap ring for limiting, and the rod body 110 is detachably connected with the movable arm 200. When the rod body 110 and the movable arm 200 need to be detached, the snap ring is detached and the pin shaft 120 is pulled out.
As shown in fig. 2 to 4, the second mounting holes 103 are formed at both sides of the rod body 110. In order to facilitate the mounting seat 230 of the movable arm 200 to penetrate through the second mounting hole 103 of the rod body 110, a fifth mounting hole 105 is formed on a side of the rod body 110 away from the opening 101, so that the mounting seat 230 of the movable arm 200 penetrates through the fifth mounting hole 105 of the rod body 110 and is connected with the second mounting hole 103 through a pin 120.
With continued reference to fig. 4, in a preferred embodiment of the present invention, for the movable arm 200 of the present invention, a mounting seat 230 is disposed on the movable arm 200, a fourth mounting hole 232 is disposed on the mounting seat 230, and the rod body 110 is connected to the fourth mounting hole 232 through the pin 120. That is, the pin shaft 120 penetrates the second mounting hole 103 and the fourth mounting hole 232. Wherein, in the utility model discloses in, installation rubber sleeve 231 in the fourth mounting hole 232, axial and the radial movement of restriction body of rod 110 when rotating around cylinder body 202 telescopic link 201 cause the abnormal sound.
Further, as shown in fig. 3, 5 and 6, in another embodiment of the present invention, the rod 110 is provided with a third mounting hole 104, and when the movable arm 200 is in a maintenance state, the locking member is connected to the third mounting hole 104 for connecting the rod 110 to the telescopic rod 201 of the oil cylinder 210. Further, when the movable arm 200 needs to be maintained, the movable arm cylinder limiting mechanism 100 needs to be detached from the movable arm 200, and the rod body 110 needs to be sleeved on the telescopic rod 201. As shown in fig. 5, in a state where the movable arm 200 is maintained, the detached locking member is coupled to the third mounting hole 104, the rod body 110 is fixed to the telescopic rod 201, and the telescopic rod 201 and the rod body 110 are further locked.
Specifically, in some embodiments of the present invention, the locking member includes a pin 120 and a snap ring, and the snap ring is disposed at both ends of the pin 120. As shown in fig. 6, the third mounting holes 104 are formed in two sides of the rod body 110, the pin shaft 120 penetrates through the third mounting hole 104 on one side of the rod body 110 to the third mounting hole 104 on the other side, and two ends of the pin shaft 120 are limited by the snap ring.
As shown in fig. 7 and 8, in another alternative embodiment of the present invention, the boom cylinder limiting mechanism 100 further includes a lifting rod 130, one end of the lifting rod 130 is rotatably connected to the rod body 110, and the other end of the lifting rod 130 is used for contacting with a telescopic rod 201 of the cylinder 210 and limiting with a cylinder body 202 of the cylinder 210.
Specifically, as shown in fig. 6, when the boom 200 is in a maintenance state, the rod body 110 is fitted over the telescopic rod 201 of the cylinder 210, and at this time, the lifting rod 130 is placed on the cylinder body 202 of the cylinder 210. After the movable arm 200 is repaired, the system is restarted, the pin shaft 120 inserted into the third mounting hole 104 is pulled out, the oil cylinder 210 is driven, the telescopic rod 201 of the oil cylinder 210 is extended, and the movable arm 200 is driven to be lifted. The rod body 110 placed on the telescopic rod 201 of the cylinder 210 also extends along the telescopic rod 201, and the lifting rod 130 placed on the cylinder body 202 is gradually placed on the telescopic rod 201 as the rod body 110 moves. The driving oil cylinder 210 retracts, the lifting rod 130 abuts against the ladder between the telescopic rod 201 and the cylinder body 202, in the process that the telescopic rod 201 retracts continuously, one end of the lifting rod 130 abuts against the ladder to rotate in place, the other end of the lifting rod 130 rotates around the rod body 110, and the rod body 110 is lifted away from the telescopic rod 201. The system is returned to a normal state until the boom 200 returns to the stopped state, and the maintenance work of the boom 200 is finished by connecting the rod body 110 to the mount 230 of the boom 200.
After the movable arm 200 is repaired, and the pin shaft 120 is pulled out, the rod body 110 of the movable arm cylinder limiting mechanism 100 can be continuously kept on the telescopic rod 201 until the movable arm 200 returns to the parking state, so that the potential safety hazard of the movable arm 200 repair is reduced, and the potential danger that the movable arm cylinder limiting mechanism 100 is moved away when oil in a pipeline does not normally return to the cylinder 210 after the movable arm 200 is repaired is avoided.
In addition, in other embodiments of the present invention, the end of the lifting rod 130 contacting the telescopic rod 201 is a cylindrical surface or a spherical surface. Facilitating rotation at the step where the lifting rod 130 abuts the telescopic rod 201 and the cylinder 202.
In addition, as shown in fig. 3, a sixth mounting hole 106 is formed at one end of the rod body 110 close to the lifting rod 130, and the length of the sixth mounting hole 106 is smaller than that of the lifting rod 130, so that in the rotation process of the lifting rod 130, one end of the cylindrical surface or spherical surface of the lifting rod 130 is kept in contact with the telescopic rod 201, and friction between the rod body 110 and the oil cylinder 210 in the expansion process is avoided.
The utility model also provides a movable arm assembly, which comprises a movable arm 200, an oil cylinder 210 and the movable arm oil cylinder limiting mechanism 100 of the embodiment; the telescopic rod 201 of the oil cylinder 210 and the first mounting hole 102 of the rod body 110 are both rotatably connected to the movable arm 200, and the other end of the rod body 110 is detachably connected to the movable arm 200. Specifically, as shown in fig. 1, the telescopic rod 201 of the cylinder 210 is hinged to the first mounting hole 102 of the rod body 110, and the hinged cylinder 210 and the rod body 110 are connected to the movable arm 200 through the connecting plate 220.
Further, the utility model also provides a working machine, including the boom cylinder stop gear 100 of the above-mentioned embodiment; alternatively, the working machine includes the boom assembly of the above embodiment. For example, the work machine may be a machine such as a crane, excavator, pile driver, loader, or the like.
The utility model provides a movable arm hydro-cylinder stop gear 100, set up first mounting hole 102 through body of rod 110 one end and be used for with hydro-cylinder 210's telescopic link 201 rotatable coupling, the other end of body of rod 110 is under movable arm 200 is in non-maintenance state, body of rod 110 is connected with movable arm 200, be in under the maintenance state at movable arm 200, body of rod 110 is dismantled with movable arm 200, body of rod 110 establishes on hydro-cylinder 210's telescopic link 201 through opening 101 cover, a it is spacing to the back of returning of telescopic link 201, guarantee that movable arm 200 is in maintenance state's safety, simplify the operation maintenance operation, promote movable arm hydro-cylinder stop gear 100's the convenience of dismantlement and installation.
Further, the present invention provides a boom assembly and a working machine having the boom cylinder limiting mechanism 100 as described above, and therefore having various advantages as described above.
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 the same; 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 or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The utility model provides a swing arm hydro-cylinder stop gear which characterized in that includes:
the telescopic rod comprises a rod body, wherein an opening is formed in the length direction of the rod body, the opening is used for sleeving a telescopic rod of an oil cylinder of the movable arm with the rod body, and the inner width of the rod body is larger than the diameter of the telescopic rod;
the first mounting hole is formed in one end of the rod body and is used for being rotatably connected with the movable arm;
and the other end of the rod body is switched to be connected with or detached from the movable arm based on the working state of the movable arm.
2. The boom cylinder limiting mechanism according to claim 1, further comprising a locking member, wherein the rod body is provided with a second mounting hole, and when the boom is in a non-maintenance state, the locking member is connected with the second mounting hole to detachably connect the rod body with the boom.
3. The movable arm oil cylinder limiting mechanism according to claim 2, wherein a third mounting hole is formed in the rod body, and the locking member is connected with the third mounting hole when the movable arm is in a maintenance state, and is used for connecting the rod body with a telescopic rod of the oil cylinder.
4. The boom cylinder limiting mechanism according to any one of claims 1 to 3, further comprising a lifting rod, wherein one end of the lifting rod is rotatably connected to the rod body, and the other end of the lifting rod is configured to contact with a telescopic rod of the cylinder and limit the position of the telescopic rod of the cylinder.
5. The boom cylinder limiting mechanism according to claim 4, wherein an end of the lifting rod contacting the telescopic rod is a cylindrical surface or a spherical surface.
6. A boom assembly, comprising a boom, a cylinder, and the boom cylinder limiting mechanism of any one of claims 1 to 5;
the telescopic rod of the oil cylinder and the first mounting hole of the rod body are rotatably connected to the movable arm, and the other end of the rod body is detachably connected with the movable arm.
7. The boom assembly of claim 6, wherein the first mounting hole of the rod body is rotatably coupled to the telescoping rod of the cylinder.
8. The movable arm assembly according to claim 6 or 7, wherein a mounting seat is disposed on the movable arm, a fourth mounting hole is formed in the mounting seat, and the rod body is connected to the fourth mounting hole through a pin shaft.
9. The movable arm-set according to claim 8, wherein a rubber sleeve is installed in the fourth installation hole.
10. A working machine characterized by comprising the boom cylinder limiting mechanism according to any one of claims 1 to 5;
alternatively, the work machine comprising the boom assembly of any of claims 6 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220714212.6U CN217053559U (en) | 2022-03-29 | 2022-03-29 | Movable arm oil cylinder limiting mechanism, movable arm assembly and operation machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220714212.6U CN217053559U (en) | 2022-03-29 | 2022-03-29 | Movable arm oil cylinder limiting mechanism, movable arm assembly and operation machine |
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| Publication Number | Publication Date |
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| CN217053559U true CN217053559U (en) | 2022-07-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220714212.6U Active CN217053559U (en) | 2022-03-29 | 2022-03-29 | Movable arm oil cylinder limiting mechanism, movable arm assembly and operation machine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761355A (en) * | 2019-11-29 | 2020-02-07 | 徐工集团工程机械股份有限公司 | Driving cylinder limiting device, driving cylinder assembly and engineering machinery |
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2022
- 2022-03-29 CN CN202220714212.6U patent/CN217053559U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110761355A (en) * | 2019-11-29 | 2020-02-07 | 徐工集团工程机械股份有限公司 | Driving cylinder limiting device, driving cylinder assembly and engineering machinery |
| CN110761355B (en) * | 2019-11-29 | 2024-04-02 | 徐工集团工程机械股份有限公司 | Driving cylinder limiting device, driving cylinder assembly and engineering machinery |
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