CN216105692U - Self-locking device of telescopic boom of crane - Google Patents
Self-locking device of telescopic boom of crane Download PDFInfo
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- CN216105692U CN216105692U CN202122793870.7U CN202122793870U CN216105692U CN 216105692 U CN216105692 U CN 216105692U CN 202122793870 U CN202122793870 U CN 202122793870U CN 216105692 U CN216105692 U CN 216105692U
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Abstract
The utility model relates to a self-locking device of a telescopic boom of a crane, which comprises a plurality of grooves which are equidistantly arranged along the length directions of a third boom and a second boom, and locking components arranged on the third boom and the second boom, wherein the locking components are matched with the grooves; the locking assembly is also matched with a plurality of deep grooves which are circumferentially and equidistantly arranged on the first suspension arm rotating shaft; the locking assembly is connected with a negative pressure mechanism arranged on the base through an oil pipe, and the negative pressure mechanism comprises a driving device arranged on the base, a centrifugal assembly connected with an output shaft of the driving device and arranged on the base, and a buffer assembly arranged on the base and connected with the centrifugal assembly; the buffer assembly is connected with the locking assembly through the oil pipe, so that the telescopic boom of the crane can be locked.
Description
Technical Field
The utility model relates to the field of telescopic booms of cranes, in particular to a self-locking device of a telescopic boom of a crane.
Background
The crane refers to a multi-action crane for vertically lifting and horizontally carrying heavy objects within a certain range. Also known as crown blocks, navigation cranes and cranes.
The crane mainly comprises a hoisting mechanism, a running mechanism, a luffing mechanism, a slewing mechanism, a metal structure and the like. The hoisting mechanism is the basic working mechanism of the crane, mostly consists of a hanging system and a winch, and also lifts heavy objects through a hydraulic system. The running mechanism is used for longitudinally and horizontally moving a heavy object or adjusting the working position of the crane and generally comprises a motor, a speed reducer, a brake and wheels. The amplitude variation mechanism is only arranged on the jib crane, the amplitude of the jib crane is reduced when the jib crane is lifted up, the amplitude of the jib crane is increased when the jib crane is lifted down, and the jib crane is divided into a balanced amplitude variation mode and a non-balanced amplitude variation mode. The slewing mechanism is used for enabling the arm support to slew and consists of a driving device and a slewing bearing device. The metal structure is the framework of the crane, and the main bearing parts such as a bridge frame, an arm support and a portal frame can be box-shaped structures or truss structures, can also be web structures, and can use section steel as a supporting beam.
When the existing self-weight machine boom works, due to the requirement of preparation work, the boom often needs to wait for the completion of ground operation when being lifted, in the process, a hydraulic system provides supporting force for the boom, and the hydraulic system can be damaged and oil leakage can occur due to the fact that the hydraulic system is damaged for a long time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a self-locking device of a telescopic boom of a crane, which aims to solve the problems in the background technology.
In order to achieve the purpose, the utility model provides the following technical scheme:
a self-locking device of a telescopic boom of a crane comprises:
the locking device comprises a plurality of grooves which are equidistantly arranged along the length directions of a third suspension arm and a second suspension arm, and locking assemblies which are arranged on the third suspension arm and the second suspension arm, wherein the locking assemblies are matched with the grooves;
the locking assembly is also matched with a plurality of deep grooves which are circumferentially and equidistantly arranged on the first suspension arm rotating shaft;
the locking assembly is connected with a negative pressure mechanism arranged on the base through an oil pipe, and the negative pressure mechanism comprises a driving device arranged on the base, a centrifugal assembly connected with an output shaft of the driving device and arranged on the base, and a buffer assembly arranged on the base and connected with the centrifugal assembly;
the buffer assembly is connected with the locking assembly through the oil pipe.
As a further scheme of the utility model: the locking assembly comprises a first cylinder body with a hollow interior, a first sealing plug movably arranged in the first cylinder body, and a protruding part connected with the first sealing plug and penetrating through the first cylinder body;
the protruding part is matched with the groove and the deep groove;
the first cylinder body is respectively installed on the second suspension arm, the first suspension arm and the base.
As a still further scheme of the utility model: the inner wall of the first cylinder body is symmetrically provided with bulges, and the bulges are matched with limiting grooves symmetrically arranged on the first sealing plug.
As a still further scheme of the utility model: the centrifugal assembly comprises a rotating shaft connected with the output shaft of the driving device, a rotating part fixedly installed at one end of the rotating shaft far away from the driving device, a through groove arranged along the length direction of the rotating part, and a sliding block arranged in the through groove in a sliding manner;
one end of the sliding block is provided with a balancing weight, the other end of the sliding block is connected with a traction cable, and the traction cable bypasses a grooved wheel rotatably installed on the rotating part and is connected with the buffering assembly.
As a still further scheme of the utility model: the buffer assembly comprises a second cylinder body fixedly mounted on the base, a second sealing plug which is in sealing and rotating connection with the rotating shaft and is tightly attached to the inner wall of the second cylinder body, and an elastic guide structure arranged between the second sealing plug and the rotating piece;
and the second cylinder body is connected and communicated with the oil pipe.
As a still further scheme of the utility model: the elastic guide structure comprises a spring sleeved on the rotating shaft, connecting bearings arranged at two ends of the spring, and two guide rods fixedly arranged on the connecting bearings and penetrating through the rotating part;
one of the connecting bearings is rotatably connected with the second sealing plug, and the other connecting bearing is rotatably connected with the rotating part.
Compared with the prior art, the utility model has the beneficial effects that:
the locking assembly is novel in design, when the crane boom waits for operation during operation, the locking assembly is clamped with the groove and the deep groove, so that the angle and the length of the boom are maintained, a hydraulic system is not required to assist the crane boom to stop, the hydraulic system is prevented from being damaged during long-time operation, and meanwhile when the angle and the length of the boom need to be adjusted, the unlocking is realized through the matching of the negative pressure assembly and the locking assembly, so that the crane boom is novel in design and high in practicability.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a self-locking device of a telescopic boom of a crane.
Fig. 2 is an enlarged schematic view of the structure at a in fig. 1.
Fig. 3 is an enlarged schematic view of the structure at B in fig. 1.
Fig. 4 is a schematic structural diagram of a protruding part and a first sealing plug in one embodiment of the self-locking device of the telescopic boom of the crane.
FIG. 5 is a schematic structural diagram of a centrifugal assembly and a buffering assembly in one embodiment of the self-locking device of the telescopic boom of the crane.
In the figure: the hydraulic lifting device comprises a base 1, a first lifting arm 2, a second lifting arm 3, a third lifting arm 4, a groove 5, a cylinder body 6, a protruding part 7, a deep groove 8, an oil pipe 9, a cylinder body 10, a second cylinder body 11, a rotating part 12, a first sealing plug 13, a limiting groove 14, a through groove 15, a sliding block 15, a balancing weight 16, a traction cable 17, a rotating shaft 18, a guide rod 19, a spring 20, a connecting bearing 21, a sealing plug 22, a second sealing plug 23 and a driving device.
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. 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.
In addition, an element of the present invention may be said to be "fixed" or "disposed" to another element, either directly on the other element or with intervening elements present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Referring to fig. 1 to 5, in an embodiment of the present invention, a self-locking device for a telescopic boom of a crane includes:
the lifting device comprises a plurality of grooves 5 which are equidistantly arranged along the length directions of a third lifting arm 4 and a second lifting arm 3, and locking components which are arranged on the third lifting arm 4 and the second lifting arm 3 and are matched with the grooves 5;
the locking assembly is also matched with a plurality of deep grooves 8 which are circumferentially and equidistantly arranged on the rotating shaft of the first suspension arm 2;
the locking assembly is connected with a negative pressure mechanism arranged on the base 1 through an oil pipe 9, and the negative pressure mechanism comprises a driving device 23 arranged on the base 1, a centrifugal assembly which is connected with an output shaft of the driving device 23 and is arranged on the base 1, and a buffer assembly which is arranged on the base 1 and is connected with the centrifugal assembly;
the buffer assembly is connected with the locking assembly through the oil pipe 9;
the locking assembly comprises a first cylinder body 6 with a hollow interior, a first sealing plug 12 movably arranged in the first cylinder body 6, and a protrusion 7 which is connected with the first sealing plug 12 and penetrates through the first cylinder body 6:
the protrusion 7 is matched with the groove 5 and the deep groove 8;
the first cylinder body 6 is respectively arranged on the second suspension arm 3, the first suspension arm 2 and the base 1;
the inner wall of the first cylinder body 6 is symmetrically provided with bulges, and the bulges are matched with the limiting grooves 13 symmetrically arranged on the first sealing plug 12.
When the angle and the length of the arm need to be kept unchanged during use, the protrusion 7 is engaged with the groove 5 and the deep groove 8, so that the angle and the length of the arm can be kept in a fixed state without the aid of a hydraulic system, and when the angle and the length of the arm need to be changed, the protrusion 7 is disengaged from the groove 5 and the deep groove 8, so that the angle and the length of the arm can be changed.
The centrifugal assembly comprises a rotating shaft 18 connected with an output shaft of the driving device 23, a rotating piece 11 fixedly installed at one end of the rotating shaft 18 far away from the driving device 23, a through groove 14 arranged along the length direction of the rotating piece 11, and a sliding block 15 arranged in the through groove 14 in a sliding manner;
one end of the sliding block 15 is provided with a balancing weight 16, the other end of the sliding block 15 is connected with a traction cable 17, and the traction cable 17 bypasses a sheave which is rotatably installed on the rotating part 11 and is connected with the buffering component;
the buffering assembly comprises a second cylinder body 10 fixedly mounted on the base 1, a second sealing plug 22 which is in sealing and rotating connection with the rotating shaft 18 and is tightly attached to the inner wall of the second cylinder body 10, and an elastic guide structure arranged between the second sealing plug 22 and the rotating part 11;
the second cylinder body 10 is connected and communicated with the oil pipe 9;
the elastic guide structure comprises a spring 20 sleeved on the rotating shaft 18, connecting bearings 21 arranged at two ends of the spring 20, and two guide rods 19 fixedly arranged on the connecting bearings 21 and arranged through the rotating piece 11;
one of the connecting bearings 21 is rotatably connected with a second sealing plug 22, and the other connecting bearing 22 is rotatably connected with the rotating member 11.
When the sealing device is used, the driving device 23 rotates, the rotating part 11 is driven to rotate through the rotating shaft 18, the balancing weight 16 pulls the second sealing plug 22 to move towards the rotating part 11 under the action of centrifugal force, the spring 20 is compressed, negative pressure is generated in the second cylinder body 10 at the moment, the first sealing plug 12 is driven to move through the oil pipe, so that the protruding portion 7 is separated from the groove 5 and the deep groove 8, otherwise, the driving device 23 stops rotating, the spring 20 releases elastic potential energy, the pressure in the second cylinder body 10 is increased, the first sealing ring 12 is driven to move through the oil pipe 10, and the protruding portion 7 is driven to be clamped with the groove 5 and the deep groove 8.
It is emphasized that the above-mentioned oil pipe 9 is of bellows construction and due to the spring 20, even if the boom is extended, there is sufficient pressure to engage the protrusion 10 with the groove 5 and the deep groove 8.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (6)
1. The utility model provides a self-lock device of hoist telescopic boom which characterized in that includes:
the lifting device comprises a plurality of grooves (5) which are equidistantly arranged along the length directions of a third lifting arm (4) and a second lifting arm (3), and locking assemblies which are arranged on the third lifting arm (4) and the second lifting arm (3) and are matched with the grooves (5);
the locking assembly is also matched with a plurality of deep grooves (8) which are circumferentially and equidistantly arranged on the rotating shaft of the first suspension arm (2);
the locking assembly is connected with a negative pressure mechanism arranged on the base (1) through an oil pipe (9), the negative pressure mechanism comprises a driving device (23) arranged on the base (1), a centrifugal assembly connected with an output shaft of the driving device (23) and arranged on the base (1), and a buffer assembly arranged on the base (1) and connected with the centrifugal assembly;
the buffer assembly is connected with the locking assembly through the oil pipe (9).
2. The self-locking device for the telescopic boom of the crane is characterized in that the locking assembly comprises a first cylinder (6) with a hollow interior, a first sealing plug (12) movably arranged in the first cylinder (6), and a protrusion (7) which is connected with the first sealing plug (12) and penetrates through the first cylinder (6);
the protrusion (7) is matched with the groove (5) and the deep groove (8);
the first cylinder body (6) is respectively arranged on the second suspension arm (3), the first suspension arm (2) and the base (1).
3. The self-locking device for the telescopic boom of the crane as claimed in claim 2, wherein the inner wall of the first cylinder body (6) is further symmetrically provided with protrusions, and the protrusions are matched with the limiting grooves (13) symmetrically arranged on the first sealing plug (12).
4. The self-locking device of the telescopic boom of the crane as claimed in claim 1, wherein said centrifugal assembly comprises a rotating shaft (18) connected with the output shaft of said driving device (23), a rotating member (11) fixedly mounted on one end of said rotating shaft (18) far away from said driving device (23), a through slot (14) arranged along the length direction of said rotating member (11), and a slide block (15) slidably arranged in said through slot (14);
one end of the sliding block (15) is provided with a balancing weight (16), the other end of the sliding block (15) is connected with a traction cable (17), and the traction cable (17) bypasses a sheave which is rotatably installed on the rotating part (11) and is connected with the buffering assembly.
5. The self-locking device of the telescopic boom of the crane as claimed in claim 4, wherein said buffer assembly comprises a second cylinder (10) fixedly mounted on said base (1), a second sealing plug (22) hermetically and rotatably connected with said rotating shaft (18) and closely attached to the inner wall of said second cylinder (10), and an elastic guide structure arranged between said second sealing plug (22) and said rotating member (11);
the second cylinder body (10) is connected and communicated with the oil pipe (9).
6. The self-locking device of the telescopic boom of the crane as claimed in claim 5, wherein said elastic guiding structure comprises a spring (20) sleeved on said rotating shaft (18), a connecting bearing (21) arranged at both ends of said spring (20), and two guiding rods (19) fixedly mounted on said connecting bearing (21) and arranged through said rotating member (11);
one of the connecting bearings (21) is rotatably connected with a second sealing plug (22), and the other connecting bearing (21) is rotatably connected with the rotating piece (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122793870.7U CN216105692U (en) | 2021-11-15 | 2021-11-15 | Self-locking device of telescopic boom of crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122793870.7U CN216105692U (en) | 2021-11-15 | 2021-11-15 | Self-locking device of telescopic boom of crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216105692U true CN216105692U (en) | 2022-03-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122793870.7U Active CN216105692U (en) | 2021-11-15 | 2021-11-15 | Self-locking device of telescopic boom of crane |
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| Country | Link |
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| CN (1) | CN216105692U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115744683A (en) * | 2022-11-30 | 2023-03-07 | 菲尔森智能装备(江苏)有限公司 | Reinforced suspension arm of crane |
| CN116253258A (en) * | 2023-05-12 | 2023-06-13 | 四川川运重工机械有限公司 | Crane jib structure and crane |
-
2021
- 2021-11-15 CN CN202122793870.7U patent/CN216105692U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115744683A (en) * | 2022-11-30 | 2023-03-07 | 菲尔森智能装备(江苏)有限公司 | Reinforced suspension arm of crane |
| CN116253258A (en) * | 2023-05-12 | 2023-06-13 | 四川川运重工机械有限公司 | Crane jib structure and crane |
| CN116253258B (en) * | 2023-05-12 | 2023-10-03 | 四川川运重工机械有限公司 | Crane jib structure and crane |
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