CN111379759A - Hydraulic oil cylinder assembly and crane - Google Patents
Hydraulic oil cylinder assembly and crane Download PDFInfo
- Publication number
- CN111379759A CN111379759A CN201811617964.5A CN201811617964A CN111379759A CN 111379759 A CN111379759 A CN 111379759A CN 201811617964 A CN201811617964 A CN 201811617964A CN 111379759 A CN111379759 A CN 111379759A
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- China
- Prior art keywords
- locking
- oil cylinder
- telescopic
- plate
- cylinder
- 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.)
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/64—Jibs
- B66C23/70—Jibs constructed of sections adapted to be assembled to form jibs or various lengths
- B66C23/701—Jibs constructed of sections adapted to be assembled to form jibs or various lengths telescopic
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
- B66C23/72—Counterweights or supports for balancing lifting couples
- B66C23/78—Supports, e.g. outriggers, for mobile cranes
- B66C23/80—Supports, e.g. outriggers, for mobile cranes hydraulically actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/28—Means for indicating the position, e.g. end of stroke
- F15B15/2815—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT
- F15B15/2838—Position sensing, i.e. means for continuous measurement of position, e.g. LVDT with out using position sensors, e.g. by volume flow measurement or pump speed
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Actuator (AREA)
Abstract
The invention discloses a hydraulic oil cylinder assembly and a crane. The hydraulic oil cylinder assembly comprises a telescopic oil cylinder and a locking assembly, the locking assembly comprises a locking oil cylinder and a locking plate, the locking oil cylinder drives the locking plate to rotate relative to the telescopic oil cylinder, and the locking plate is hung on a piston rod of the telescopic oil cylinder in a locking state; in the unlocking state, the locking plate is separated from the piston rod of the telescopic oil cylinder. The hydraulic oil cylinder assembly can realize reliable fixation of the telescopic oil cylinder by arranging the locking assembly for locking and unlocking the action of the telescopic oil cylinder, thereby improving the action reliability of the telescopic oil cylinder and improving the use safety.
Description
Technical Field
The invention relates to the technical field of hoisting machinery, in particular to a hydraulic oil cylinder assembly and a crane.
Background
The super-tonnage all-terrain crane is a mobile crane suitable for large-scale hoisting engineering and is generally used in large-tonnage hoisting or occasions with higher hoisting positions. In order to ensure the moment of the telescopic boom of the crane during the hoisting at a higher position, a super-lift structure is arranged on the boom, so that the bending moment born by the boom is reduced. The super-lifting structure is connected with the upper part of the basic arm of the suspension arm and is higher away from the ground, so that the requirement on the reliability of the action of the super-lifting structure is higher, and the use safety is improved.
Disclosure of Invention
The invention aims to provide a hydraulic cylinder assembly and a crane, which are used for improving the reliability of the action of the hydraulic cylinder assembly.
A first aspect of the present invention provides a hydraulic cylinder assembly comprising:
a telescopic oil cylinder; and
the locking assembly comprises a locking oil cylinder and a locking plate, the locking oil cylinder drives the locking plate to rotate relative to the telescopic oil cylinder, and the locking plate is hung on a piston rod of the telescopic oil cylinder in a locking state; in the unlocking state, the locking plate is separated from the piston rod of the telescopic oil cylinder.
In some embodiments, the locking plate comprises a notch, a protrusion is arranged on a piston rod of the telescopic oil cylinder, and the notch is hung and buckled on the protrusion in a locking state; in the unlocked state, the notch is disengaged from the protrusion.
In some embodiments, the cross-section of the notch is arcuate.
In some embodiments, the latch plate is rotatably coupled to the cylinder body of the telescopic cylinder.
In some embodiments, the hydraulic ram assembly further comprises a mounting plate disposed on the body of the telescopic ram and a position feedback device that sends a status signal based on the position of the detent plate.
In some embodiments, the position feedback device comprises a first proximity switch arranged on the mounting plate and a first sensing block arranged on the locking plate, and the first proximity switch sends out a locking signal when detecting a feedback signal of the first sensing block; and/or, the position feedback device comprises a second proximity switch arranged on the mounting plate and a second induction block arranged on the locking plate, and an unlocking signal is sent out when the second proximity switch detects a feedback signal of the second induction block.
In some embodiments, the cylinder body of the locking cylinder is connected with the cylinder body of the telescopic cylinder, and the piston rod of the locking cylinder is connected with the locking plate to drive the locking plate to rotate.
In some embodiments, the hydraulic ram assembly further comprises a displacement sensor for detecting displacement of a piston rod of the telescopic ram.
In a second aspect the invention provides a crane comprising a telescopic arm, a super lift apparatus and a hydraulic ram assembly as provided in any one of the first aspects of the invention, the hydraulic ram assembly driving the super lift apparatus to deploy or retract relative to the telescopic arm.
Based on the technical scheme provided by the invention, the hydraulic oil cylinder assembly comprises a telescopic oil cylinder and a locking assembly, the locking assembly comprises a locking oil cylinder and a locking plate, the locking oil cylinder drives the locking plate to rotate relative to the telescopic oil cylinder, and the locking plate is hung on a piston rod of the telescopic oil cylinder in a locking state; in the unlocking state, the locking plate is separated from the piston rod of the telescopic oil cylinder. The hydraulic oil cylinder assembly can realize reliable fixation of the telescopic oil cylinder by arranging the locking assembly for locking and unlocking the action of the telescopic oil cylinder, thereby improving the action reliability of the telescopic oil cylinder and improving the use safety.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:
FIG. 1 is a schematic structural view of a hydraulic cylinder assembly according to an embodiment of the present invention;
FIG. 2 is a side elevational view of the hydraulic cylinder assembly of FIG. 1;
FIG. 3 is a schematic view of the structure of FIG. 2;
FIG. 4 is a schematic view of the structure of FIG. 3 in the direction B;
FIG. 5 is a schematic view of the structure of FIG. 2 in the direction of C;
fig. 6 is a schematic structural view of the hydraulic cylinder assembly of the present embodiment in an unlocked state.
Each reference numeral represents:
1. a displacement sensor; 2. a telescopic oil cylinder; 3. locking the oil cylinder; 4. a first proximity switch; 5. a second proximity switch; 6. a lock plate; 7. an ear plate; 8. mounting a plate; 9. a first sensing block; 10. a second sensing block; 11. and (4) protruding.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
As shown in fig. 1 to 6, a hydraulic cylinder assembly of an embodiment of the present invention includes:
a telescopic oil cylinder 2; and
the locking assembly comprises a locking oil cylinder 3 and a locking plate 6, the locking oil cylinder 3 drives the locking plate 6 to rotate relative to the telescopic oil cylinder 2, and the locking plate 6 is hung on a piston rod of the telescopic oil cylinder 2 in a locking state; in the unlocked state, the lock plate 6 is disengaged from the piston rod of the telescopic cylinder 2.
The hydraulic oil cylinder assembly provided by the embodiment of the invention can realize reliable fixation of the telescopic oil cylinder by arranging the locking assembly for locking and unlocking the action of the telescopic oil cylinder, so that the action reliability of the telescopic oil cylinder is improved, and the use safety is improved.
The hydraulic ram assembly of this embodiment is used to drive the superlift device to deploy or stow relative to the telescoping arm.
Specifically, in a locking state, the piston rod of the telescopic cylinder 2 is fully extended, and the locking cylinder 3 drives the locking plate 6 to act so as to be hung on the piston rod, so that the piston rod is prevented from acting; in an unlocking state, the locking oil cylinder 3 drives the locking plate 6 to act so as to be separated from the piston rod, and the piston rod can move freely.
As shown in fig. 2, the cylinder body of the lock cylinder 3 of the present embodiment is connected to the cylinder body of the telescopic cylinder 2, and the piston rod of the lock cylinder 3 is connected to the lock plate 6 to drive the lock plate 6 to rotate. The locking oil cylinder 3 is used for driving the locking plate 6, the driving force is large, the whole structure is compact, and the occupied space of a host machine is reduced. The lockup cylinder 3 of the present embodiment is a double-acting hydraulic cylinder with an external spring.
Specifically, the locking plate 6 of the present embodiment includes a notch, a protrusion 11 is disposed on the piston rod of the telescopic cylinder 2, and in the locking state, the notch is hooked on the protrusion 11 (as shown in fig. 4); in the unlocked state, the notch is disengaged from the projection 11 (as shown in fig. 6).
The notch of the lock plate 6 of the present embodiment has an arc-shaped cross section. Correspondingly, the cross section of the bulge is also arc-shaped, so that the locking plate 6 can be conveniently matched with the bulge when rotating.
In this embodiment, the hydraulic cylinder assembly includes an ear plate 7 disposed at an end of the piston rod of the telescopic cylinder 2, and the protrusion 11 is disposed on the ear plate 7. The protrusion may be a pin or the like.
As shown in fig. 2 and 3, the lock plate 6 of the present embodiment is rotatably attached to the cylinder body of the telescopic cylinder.
In order to monitor the state of the hydraulic cylinder assembly for better control of its operation, the hydraulic cylinder assembly of this embodiment further comprises position feedback means. The position feedback device sends a status signal according to the position of the lock plate 6.
Specifically, as shown in fig. 2, the hydraulic cylinder assembly of the present embodiment further includes a mounting plate 8 disposed on the cylinder body of the telescopic cylinder 2, and the position feedback device of the present embodiment includes a first proximity switch 4 disposed on the mounting plate 8 and a first sensing block 9 disposed on the locking plate 6, and sends out a locking signal when the first proximity switch 4 detects a feedback signal of the first sensing block 9.
And the position feedback device of this embodiment includes the second proximity switch 5 disposed on the mounting plate 8 and the second sensing block 10 disposed on the locking plate 6, and sends out the unlocking signal when the second proximity switch 5 detects the feedback signal of the second sensing block 10. The operating condition of the hydraulic cylinder assembly of the present embodiment may be monitored.
The hydraulic cylinder assembly of the present embodiment further includes a displacement sensor 1, and the displacement sensor 1 is configured to detect a displacement of a piston rod of the telescopic cylinder 2.
Finally, it should be noted that: the above examples are only intended 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 preferred embodiments, those skilled in the art will understand that: modifications to the specific embodiments of the invention or equivalent substitutions for parts of the technical features may be made; without departing from the spirit of the present invention, it is intended to cover all aspects of the invention as defined by the appended claims.
Claims (9)
1. A hydraulic cylinder assembly, comprising:
a telescopic oil cylinder (2); and
the locking assembly comprises a locking oil cylinder (3) and a locking plate (6), the locking oil cylinder (3) drives the locking plate (6) to rotate relative to the telescopic oil cylinder (2), and the locking plate (6) is hung on a piston rod of the telescopic oil cylinder (2) in a locking state; in an unlocking state, the locking plate (6) is separated from the piston rod of the telescopic oil cylinder (2).
2. A hydraulic cylinder assembly according to claim 1, characterized in that the locking plate (6) comprises a notch, and a protrusion (11) is arranged on the piston rod of the telescopic cylinder (2), and in the locking state, the notch is hooked on the protrusion (11); in the unlocked state, the notch is disengaged from the projection (11).
3. The hydraulic ram assembly of claim 2, wherein the notch is arcuate in cross-section.
4. A hydraulic ram assembly according to claim 1 characterised in that the latch plate (6) is pivotally connected to the body of the telescopic ram (2).
5. A hydraulic ram assembly according to claim 1, characterised in that the hydraulic ram assembly further comprises a mounting plate (8) provided on the body of the telescopic ram (2) and a position feedback device which sends a status signal in dependence on the position of the detent plate (6).
6. The hydraulic cylinder assembly of claim 5, wherein the position feedback device comprises a first proximity switch (4) arranged on the mounting plate (8) and a first sensing block (9) arranged on the locking plate (6), and a locking signal is sent out when the first proximity switch (4) detects a feedback signal of the first sensing block (9); and/or, the position feedback device comprises a second proximity switch (5) arranged on the mounting plate (8) and a second induction block (10) arranged on the locking plate (6), and an unlocking signal is sent out when the second proximity switch (5) detects a feedback signal of the second induction block (10).
7. The hydraulic oil cylinder assembly as recited in claim 1, characterized in that the cylinder body of the locking oil cylinder (3) is connected with the cylinder body of the telescopic oil cylinder (2), and the piston rod of the locking oil cylinder (3) is connected with the locking plate (6) to drive the locking plate (6) to rotate.
8. A hydraulic ram assembly according to any one of claims 1 to 7, characterised in that the hydraulic ram assembly further comprises a displacement sensor (1), the displacement sensor (1) being for detecting displacement of a piston rod of the telescopic ram (2).
9. A crane comprising a telescopic arm, a superlift apparatus and a hydraulic ram assembly as claimed in any one of claims 1 to 8, the hydraulic ram assembly driving the superlift apparatus to deploy or stow relative to the telescopic arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617964.5A CN111379759B (en) | 2018-12-28 | 2018-12-28 | Hydraulic oil cylinder assembly and crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811617964.5A CN111379759B (en) | 2018-12-28 | 2018-12-28 | Hydraulic oil cylinder assembly and crane |
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| Publication Number | Publication Date |
|---|---|
| CN111379759A true CN111379759A (en) | 2020-07-07 |
| CN111379759B CN111379759B (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811617964.5A Active CN111379759B (en) | 2018-12-28 | 2018-12-28 | Hydraulic oil cylinder assembly and crane |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002461A (en) * | 2021-10-28 | 2022-02-01 | 歌尔科技有限公司 | Online aging testing equipment |
| CN117886250A (en) * | 2024-03-15 | 2024-04-16 | 三一重型装备有限公司 | Piston rod locking mechanism, jack and hydraulic support |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114002461A (en) * | 2021-10-28 | 2022-02-01 | 歌尔科技有限公司 | Online aging testing equipment |
| CN117886250A (en) * | 2024-03-15 | 2024-04-16 | 三一重型装备有限公司 | Piston rod locking mechanism, jack and hydraulic support |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111379759B (en) | 2022-09-02 |
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