CN209890123U - Telescopic arm telescopic device of lorry-mounted crane - Google Patents
Telescopic arm telescopic device of lorry-mounted crane Download PDFInfo
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- CN209890123U CN209890123U CN201920593323.4U CN201920593323U CN209890123U CN 209890123 U CN209890123 U CN 209890123U CN 201920593323 U CN201920593323 U CN 201920593323U CN 209890123 U CN209890123 U CN 209890123U
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Abstract
The utility model provides a flexible arm telescoping device of lorry-mounted crane, including first, two hydro-cylinders and the basic arm of nested assembly each other, two sections arms, three sections arms, four sections arms and five sections arms, the piston rod and the basic arm rear portion of first hydro-cylinder are connected, first hydro-cylinder body links together with two section arm rear portions and second hydro-cylinder piston rod, second hydro-cylinder body is connected with three section arm rear portions, three section arm front portions, be connected with first cable structure between four section arms and the five section arm front portions, be connected with second cable structure between two section arms and the four section arms, be connected with third cable structure between three section arm and the five section arm, be equipped with the trigger assembly of the flexible action of control first, two hydro-cylinders between first hydro-cylinder and the second hydro-cylinder. The utility model discloses flexible arm telescoping device of lorry crane's two hydro-cylinders can stretch out and draw back in proper order, and first hydro-cylinder does not receive the eccentric force influence to improve its piston rod stability, and its job control easily adjusts, and two hydro-cylinders motion are steady, and during davit concertina movement, flexible hydro-cylinder can not produce and beat, and hydraulic control is simple, and the energy consumption is low.
Description
Technical Field
The utility model relates to a multistage hydro-cylinder control technical field, concretely says so and relates to a flexible arm telescoping device of lorry-mounted crane.
Background
The boom telescoping mechanism of the current five-section boom lorry-mounted crane basically adopts the following three mechanisms:
1. one oil cylinder drives three sets of inhaul cables and drives four sections of telescopic arm telescopic mechanisms together, and the telescopic mechanisms have the defects of high difficulty in spatial arrangement in the arms and more faults;
2. the double-cylinder of mechanical type order telescopic valve control drives two sets of cables, drives four sections telescopic boom telescopic machanisms altogether, two sets of cables that its adopted are single cable, because the cable is the transmission of walking around the pulley and carrying out power, so can double the increase from top section arm beginning power, four sections arm telescopic boom cables are compared in five sections arm telescopic boom cables's factor of safety low like this, whole telescopic machanism's ability has been restricted, and the piston rod of second hydro-cylinder is installed on the cylinder of first hydro-cylinder, this telescopic machanism's shortcoming is: (1) because two oil cylinders can not move freely, the oil cylinder can jump to cause the damage of a mechanical oil cylinder sequential telescopic control valve and the failure of work due to the sleeving gap of each section arm and the height difference of the oil cylinder when the oil cylinder enters and exits the five section arm; (2) the force of the second oil cylinder is directly transmitted to the hinged part of the first oil cylinder and the second oil cylinder, so that the first oil cylinder is subjected to eccentric force to reduce the stability of a piston rod of the first oil cylinder;
3. the double cylinders drive two sets of inhaul cables and drive the four-section telescopic arm telescopic mechanism together, and the telescopic mechanism has the following defects: the four-section arm guy cable is a rope row, the safety coefficient of the four-section arm guy cable can be improved, but the oil circuit control position is hydraulic control or electro-hydraulic control, the energy loss is large, the cost is high, and a piston rod of the second oil cylinder is arranged on a cylinder barrel of the first oil cylinder, and the two oil cylinders cannot move freely, so that the two oil cylinders can jump in the stretching process; the force of the second oil cylinder is directly transmitted to the hinged position of the first oil cylinder and the second oil cylinder, so that the first oil cylinder is subjected to eccentric force, and the stability of a piston rod of the first oil cylinder is reduced.
Therefore, the present inventors have made extensive studies to design a telescopic arm telescopic device for a lorry-mounted crane, which can solve the above-mentioned problems.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flexible arm telescoping device of lorry-mounted crane, but its two hydro-cylinders are flexible in order, and first hydro-cylinder does not receive the eccentric force influence to improve its piston rod stability, and its job control easily adjusts, and two hydro-cylinders motion are steady, and during davit concertina movement, flexible hydro-cylinder can not produce and beat, and hydraulic control is simple, and the energy consumption is low.
In order to realize the technical scheme, the utility model provides a flexible arm telescoping device of lorry-mounted crane, basic arm, two festival arms, three festival arms, four festival arms and the five festival arms that include first hydro-cylinder, second hydro-cylinder and nested assembly each other, the piston rod and the basic arm rear portion of first hydro-cylinder are connected, first hydro-cylinder body with the piston rod of two festival arm rear portions and second hydro-cylinder links together, the cylinder body of second hydro-cylinder with three festival arm rear portion is connected, be connected with first cable structure between three festival arm front portions, four festival arms and the five festival arm front portions, be connected with second cable structure between two festival arms and the four festival arm, be connected with third cable structure between three festival arm and the five festival arm, be equipped with the subassembly that triggers the flexible action of first hydro-cylinder of control, second hydro-cylinder between first hydro-cylinder and the second hydro-cylinder.
The utility model discloses lorry crane telescopic boom telescoping device, wherein the piston rod of first hydro-cylinder with articulate through first round pin axle between the basic arm rear portion together, be equipped with articulated frame on the cylinder body of first hydro-cylinder, articulate through second round pin axle between articulated frame upper portion and the two sections arm rear portions together, articulate through third round pin axle between the piston rod of second hydro-cylinder, articulated frame lower part and the two sections arm rear portions together, the cylinder body of second hydro-cylinder with articulate through fourth round pin axle between the three sections arm rear portion together.
The utility model discloses flexible arm telescoping device of lorry-mounted crane, wherein articulated frame upper and lower part is equipped with first shaft hole, second shaft hole respectively, be equipped with third shaft hole, fourth shaft hole on piston rod, the cylinder body of second hydro-cylinder respectively, the second round pin axle passes the first shaft hole of articulated frame and the shaft hole at two festival arm rear portions make the two articulated together, the third round pin axle passes the shaft hole at articulated frame second shaft hole, two festival arm rear portions and the third shaft hole of second hydro-cylinder make the three articulated together, the fourth round pin axle passes the fourth shaft hole at second hydro-cylinder and the shaft hole at three festival arm rear portion makes the two articulated together.
The utility model discloses lorry crane telescopic boom telescoping device, wherein first shaft hole, second shaft hole and fourth shaft hole are the slotted hole.
The utility model discloses flexible arm telescoping device of lorry-mounted crane, wherein first cable structure includes five sections arm stretching inhaul cables, five sections arm stretching inhaul cables walk around set up in first half pulley at five sections arm rear portions, set up in behind two first pulleys of four sections arm front portions, both ends are fixed in the front portion of three sections arm.
The utility model discloses flexible arm telescoping device of lorry-mounted crane, wherein second cable structure includes four sections arm stretching cables, the one end of four sections arm stretching cables through the round pin axle articulate in the rear portion of four sections arms, the other end walk around set up in behind the support pulley on the anterior hydro-cylinder support of second hydro-cylinder, articulate through the round pin axle in the rear portion of two sections arms.
The utility model discloses flexible arm telescoping device of lorry-mounted crane, wherein trigger the subassembly including set up in the control valve of first hydro-cylinder body front end and set up in regulation firing pin on the hydro-cylinder support, adjust the firing pin with relative setting around the control valve is.
The utility model discloses lorry crane telescopic boom telescoping device, wherein be connected with the mounting panel on the hydro-cylinder support, adjust the firing pin install in on the mounting panel.
The utility model discloses lorry crane telescopic boom telescoping device, wherein the control valve adopts mechanical type hydro-cylinder order telescopic control valve.
The utility model discloses flexible arm telescoping device of lorry-mounted crane, wherein the third cable structure is including contracting the arm cable, it walks around to contract the arm cable behind the second half pulley of the anterior setting of five sections arm, both ends respectively around behind the second pulley that second hydro-cylinder body rear portion set up, the third pulley of the anterior setting of first hydro-cylinder body articulate through the round pin axle in the rear portion of three sections arms.
After the scheme is adopted, the utility model discloses lorry crane telescopic boom telescoping device has following beneficial effect:
1. the utility model discloses an adopt the third round pin axle to pass third shaft hole and two sections arm afterbody and the second shaft hole on the articulated frame on the second hydro-cylinder piston rod and make the three articulated together, second shaft hole aperture design on the articulated frame is great and be the slotted hole, and the setting can make the thrust of second hydro-cylinder directly transmit two sections arm rear portions like this, and then transmit first hydro-cylinder and two sections arm articulated third round pin axles on by two sections arm rear portions, make the first hydro-cylinder not influenced by eccentric force, improved the stability of first hydro-cylinder piston rod;
2. the first oil cylinder and the second oil cylinder move independently, and the first shaft hole, the second shaft hole and the fourth shaft hole on the hinge frame are all designed into long round holes, so that the first oil cylinder and the second oil cylinder can be prevented from jumping due to manufacturing gap errors and assembly errors of the suspension arm and height difference generated when the two oil cylinders pass in and out of the five-section arm;
3. the four-section arm boom guy cable adopts a rope row structure with a plurality of steel wire ropes cast side by side and bypasses a bracket pulley on the oil cylinder bracket, so that the design can improve the bearing capacity of the four-section arm boom guy cable;
4. the trigger assembly arranged between the first oil cylinder and the second oil cylinder is simple in structure, and the contact size of the adjusting firing pin of the trigger assembly and the striking block of the mechanical oil cylinder sequential telescopic control valve is easy to adjust and guarantee;
5. the sequential extension of the first oil cylinder and the second oil cylinder is controlled by the mechanical oil cylinder sequential extension control valve, the hydraulic control is simple, and the energy consumption is low.
Drawings
Fig. 1 is a schematic view of the telescopic arm telescopic device of the lorry-mounted crane of the utility model;
FIG. 2 is a schematic sectional view taken along line A-A of FIG. 1;
FIG. 3 is a schematic sectional view taken along line B-B of FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along line C-C of FIG. 1;
fig. 5 is a schematic view of a first telescopic cylinder of the present invention;
FIG. 6 is a schematic cross-sectional view taken along line D-D of FIG. 5;
fig. 7 is a schematic view of a second telescopic cylinder of the present invention;
fig. 8 is a schematic sectional view along the direction E-E in fig. 7.
Detailed Description
As shown in fig. 1 to 4, the telescopic boom extension device of the lorry-mounted crane of the present invention comprises a first oil cylinder 1, a second oil cylinder 2, and a tubular basic boom 3, a second boom 4, a third boom 5, a fourth boom 6 and a fifth boom 7 which are nested with each other.
Referring to fig. 5 and 6, a piston rod of the first oil cylinder 1 is hinged to the rear portion of the basic arm 3 through a first pin 8, a hinge frame 9 is arranged on a cylinder body of the first oil cylinder 1, a first shaft hole 10 and a second shaft hole 11 are respectively arranged on the upper portion and the lower portion of the hinge frame 9, and the first shaft hole 10 and the second shaft hole 11 are both oblong holes. The hinge frame 9 and the rear part of the second-section arm 4 are hinged together by a second pin shaft 12 passing through the first shaft hole 10 and the shaft hole at the rear part of the second-section arm 4.
Referring to fig. 7 and 8, a piston rod and a cylinder body of the second cylinder 2 are respectively provided with a third shaft hole 13 and a fourth shaft hole 14, and the fourth shaft hole 14 is an oblong hole. The piston rod of the second oil cylinder 2, the hinge frame 9 and the rear part of the second section arm 4 are hinged together after passing through a third shaft hole 13, a second shaft hole 11 and a shaft hole at the rear part of the second section arm 4 by a third pin shaft 15, and the cylinder body of the second oil cylinder 2 and the rear part of the three section arm 5 are hinged together after passing through a fourth shaft hole 14 and a shaft hole at the rear part of the three section arm 5 by a fourth pin shaft 16.
Referring to fig. 1, a first cable structure is connected between the front portion of the three-section arm 5, the front portion of the four-section arm 6 and the front portion of the five-section arm 7, the first cable structure includes a five-section arm extension cable 17, the five-section arm extension cable 17 bypasses a first half pulley arranged at the rear portion of the five-section arm 7, and two ends of the five-section arm extension cable are fixed to the front portion of the three-section arm 5 through bolts after two first pulleys 18 arranged at the front portion of the four-section arm 6.
And a second cable structure is connected between the two-section arm 4 and the four-section arm 6 and comprises a four-section arm extension cable 19, one end of the four-section arm extension cable 19 is hinged to the rear part of the four-section arm 6 through a pin shaft, and the other end of the four-section arm extension cable is hinged to the rear part of the two-section arm 4 through a pin shaft after bypassing a support pulley 21 arranged on an oil cylinder support 20 at the front part of the second oil cylinder 2.
And a third cable structure is connected between the three-section arm 5 and the five-section arm 7 and comprises a contracted arm cable 22, and after the contracted arm cable 22 bypasses a second half pulley arranged at the front part of the five-section arm 7, the two ends of the contracted arm cable are respectively hinged to the rear part of the three-section arm 5 through a pin shaft after bypassing a second pulley 23 arranged at the rear part of the cylinder body of the second oil cylinder 2 and a third pulley 24 arranged at the front part of the cylinder body of the first oil cylinder 1.
A trigger assembly for controlling the telescopic action of the first oil cylinder 1 and the second oil cylinder 2 is arranged between the first oil cylinder 1 and the second oil cylinder 2. The trigger assembly comprises a control valve 25 arranged at the front end of the cylinder body of the first oil cylinder 1 and an adjusting striker 26 arranged on the oil cylinder bracket 20, the control valve 25 of the embodiment adopts a mechanical oil cylinder sequential telescopic control valve, and the adjusting striker 26 and the control valve 25 are arranged in a front-back opposite manner. The cylinder bracket 20 is connected with a mounting plate 27, and the adjusting striker 26 is mounted on the mounting plate 27.
An arm extending process: when the first oil cylinder 1 extends outwards, the two-section arm 4, the three-section arm 5, the four-section arm 6 and the five-section arm 7 are driven to extend outwards integrally, after the first oil cylinder 1 extends outwards completely, the oil circuit is controlled through the control valve 25, the cylinder body of the second oil cylinder 2 extends outwards, the three-section arm 5 is pushed to extend outwards, meanwhile, the four-section arm extension cable 19 pulls the four-section arm 6, and the five-section arm extension cable 17 pulls the five-section arm 7 to extend outwards synchronously.
The arm retracting process: the cylinder body of the second oil cylinder 2 retracts firstly, the three-section arm 5 is driven by the second oil cylinder 2 to retract, the arm retracting guy 22 pulls the five-section arm 7 to retract, meanwhile, the five-section arm extending guy 17 retracts the four-section arm 6, and the three-section arm 5, the four-section arm 6 and the five-section arm 7 retract synchronously; after the cylinder body of the second oil cylinder 2 is completely retracted, the oil circuit is controlled through the control valve 25, so that the cylinder body of the first oil cylinder 1 is retracted, and the two-section arm 4, the three-section arm 5, the four-section arm 6 and the five-section arm 7 are driven to retract.
The utility model discloses an adopt third round pin axle 15 to pass third shaft hole 13 and two section arms 4 afterbody and the second shaft hole 11 on the articulated frame 9 on the second hydro-cylinder 2 piston rod and make the three articulated together, with the second shaft hole 11 aperture design on the articulated frame 9 great and be the slotted hole, the setting can make the thrust of second hydro-cylinder 2 directly transmit the rear portion of two section arms 4 like this, transmit to first hydro-cylinder 1 and two section arms 4 articulated third round pin axle 15 by the rear portion of two section arms 4 again, make first hydro-cylinder 1 not influenced by eccentric force, the stability of first hydro-cylinder 1 piston rod has been improved; the first oil cylinder 1 and the second oil cylinder 2 move independently, and the first shaft hole 10, the second shaft hole 11 and the fourth shaft hole 14 on the hinge frame 9 are all designed into long round holes, so that the first oil cylinder 1 and the second oil cylinder 2 can be prevented from jumping due to manufacturing gap errors and assembly errors of the suspension arm and height difference generated when the two oil cylinders pass in and out of the five-section arm; the four-section arm extension cable 19 adopts a rope row structure with a plurality of steel wire ropes cast side by side and bypasses a bracket pulley 21 on the oil cylinder bracket 20, so that the design can improve the bearing capacity of the four-section arm extension cable 19; the trigger assembly arranged between the first oil cylinder 1 and the second oil cylinder 2 has a simple structure, and the contact size of the adjusting striker 26 of the trigger assembly and the striker of the mechanical oil cylinder sequential telescopic control valve 25 is easy to adjust and ensure; the sequential extension and retraction of the first oil cylinder 1 and the second oil cylinder 2 are controlled by the mechanical oil cylinder sequential extension and retraction control valve 25, the hydraulic control is simple, and the energy consumption is low.
The above-mentioned embodiments are only intended to describe the preferred embodiments of the present invention, but not to limit the scope of the present invention, and various modifications and improvements made by the technical solutions of the present invention by those skilled in the art should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.
Claims (10)
1. The utility model provides a flexible arm telescoping device of lorry-mounted crane, its characterized in that, includes basic arm, two sections arms, three sections arms, four sections arms and the five sections arms of first hydro-cylinder, second hydro-cylinder and nested assembly each other, the piston rod and the basic arm rear portion of first hydro-cylinder are connected, first hydro-cylinder body with the piston rod of two sections arm rear portions and second hydro-cylinder links together, the cylinder body of second hydro-cylinder with three sections arm rear portion is connected, be connected with first cable structure between three sections arm front portion, four sections arms and the five sections arm front portion, be connected with second cable structure between two sections arms and the four sections arm, be connected with third cable structure between three sections arm and the five sections arm, be equipped with the trigger subassembly of the flexible action of control first hydro-cylinder, second hydro-cylinder between first hydro-cylinder and the second hydro-cylinder.
2. The telescopic boom telescoping device of the lorry-mounted crane according to claim 1, wherein a piston rod of the first oil cylinder is hinged to the rear portion of the basic boom through a first pin shaft, a hinge frame is arranged on a cylinder body of the first oil cylinder, the upper portion of the hinge frame is hinged to the rear portion of the second boom through a second pin shaft, a piston rod of the second oil cylinder, the lower portion of the hinge frame and the rear portion of the second boom are hinged together through a third pin shaft, and a cylinder body of the second oil cylinder is hinged to the rear portion of the third boom through a fourth pin shaft.
3. The telescopic boom telescoping device of the lorry-mounted crane according to claim 2, wherein the upper and lower parts of the hinge frame are respectively provided with a first shaft hole and a second shaft hole, the piston rod and the cylinder body of the second oil cylinder are respectively provided with a third shaft hole and a fourth shaft hole, the second pin shaft penetrates through the first shaft hole of the hinge frame and the shaft hole at the rear part of the two-section boom to enable the first shaft hole and the second shaft hole to be hinged together, the third pin shaft penetrates through the second shaft hole of the hinge frame, the shaft hole at the rear part of the two-section boom and the third shaft hole of the second oil cylinder to enable the third shaft hole, the fourth pin shaft penetrates through the fourth shaft hole of the second oil cylinder and the shaft hole at the rear part of.
4. The telescopic boom extension device of an lorry-mounted crane according to claim 3, wherein the first shaft hole, the second shaft hole and the fourth shaft hole are all oblong holes.
5. The telescopic boom retractor of claim 1, wherein the first cable structure comprises a five-section boom extension cable, the five-section boom extension cable passes around a first half pulley arranged at the rear part of the five-section boom, two first pulleys arranged at the front part of the four-section boom are arranged at the rear part of the four-section boom, and two ends of the five-section boom extension cable are fixed at the front part of the three-section boom.
6. The telescopic boom retractor device of claim 1, wherein the second cable structure comprises a four-section boom extension cable, one end of the four-section boom extension cable is hinged to the rear portion of the four-section boom through a pin shaft, and the other end of the four-section boom extension cable is hinged to the rear portion of the two-section boom through a pin shaft after bypassing a bracket pulley arranged on a cylinder bracket at the front portion of the second cylinder.
7. The vehicle-mounted crane telescopic boom extension device as claimed in claim 6, wherein the trigger assembly comprises a control valve disposed at a front end of the first cylinder body and an adjusting striker disposed on the cylinder bracket, and the adjusting striker and the control valve are disposed in a front-back opposite arrangement.
8. The telescopic boom extension and retraction device for lorry-mounted cranes as claimed in claim 7, wherein a mounting plate is connected to said cylinder support and said adjustment striker is mounted to said mounting plate.
9. The telescopic boom extension device of lorry-mounted crane according to claim 7, wherein said control valve is a mechanical cylinder sequential extension control valve.
10. The telescopic boom extension device of the lorry-mounted crane as claimed in claim 1, wherein the third cable structure comprises a telescopic boom cable, and after the telescopic boom cable bypasses a second half pulley arranged at the front part of the five-section boom, two ends of the telescopic boom cable are respectively hinged to the rear part of the three-section boom through a pin shaft after bypassing a second pulley arranged at the rear part of the second cylinder body and a third pulley arranged at the front part of the first cylinder body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920593323.4U CN209890123U (en) | 2019-04-26 | 2019-04-26 | Telescopic arm telescopic device of lorry-mounted crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920593323.4U CN209890123U (en) | 2019-04-26 | 2019-04-26 | Telescopic arm telescopic device of lorry-mounted crane |
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| Publication Number | Publication Date |
|---|---|
| CN209890123U true CN209890123U (en) | 2020-01-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201920593323.4U Active CN209890123U (en) | 2019-04-26 | 2019-04-26 | Telescopic arm telescopic device of lorry-mounted crane |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109969956A (en) * | 2019-04-26 | 2019-07-05 | 江苏宏昌天马物流装备有限公司 | Lorry-mounted crane telescopic arm telescopic device |
-
2019
- 2019-04-26 CN CN201920593323.4U patent/CN209890123U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109969956A (en) * | 2019-04-26 | 2019-07-05 | 江苏宏昌天马物流装备有限公司 | Lorry-mounted crane telescopic arm telescopic device |
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