CN112158747A - Truck-mounted crane rear supporting leg with departure angle - Google Patents
Truck-mounted crane rear supporting leg with departure angle Download PDFInfo
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- CN112158747A CN112158747A CN202010956703.7A CN202010956703A CN112158747A CN 112158747 A CN112158747 A CN 112158747A CN 202010956703 A CN202010956703 A CN 202010956703A CN 112158747 A CN112158747 A CN 112158747A
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- cantilever
- plate
- spout
- fixed
- connecting rod
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Vehicle Cleaning, Maintenance, Repair, Refitting, And Outriggers (AREA)
Abstract
The invention discloses a rear support leg with a self-leaving angle for a truck-mounted crane, which comprises a first cantilever, a hydraulic cylinder and a sliding groove, wherein a connecting plate is fixed at the left end of the first cantilever, a screw hole is formed in the connecting plate, a second cantilever is arranged in front of the first cantilever, a third cantilever is arranged in front of the second cantilever, a fourth cantilever is arranged in front of the third cantilever, and fixing plates are welded and fixed at the right end of the first cantilever, the left end of the second cantilever and the right end of the third cantilever. This vehicle-mounted crane leaves landing leg behind angle from area, be provided with the spout, connecting rod and spacing hole, first motor drives the connecting axle and rotates, makes first cantilever and the concatenation of second cantilever, and the second motor drives the gear and rotates, and wheel and rack cooperation promotes the connecting rod and slides along the spout, slides to spacing downthehole portion until the spout, consolidates through the connecting rod between first cantilever and the second cantilever, is convenient for transmit the pressure that first cantilever received to the second cantilever, improves joint strength between first cantilever and the second cantilever.
Description
Technical Field
The invention relates to the technical field of rear supporting legs, in particular to a rear supporting leg with a departure angle of a truck-mounted crane.
Background
The truck-mounted crane is widely applicable to hoisting and transporting of basic building materials and other equipment such as municipal construction, coal mines, engineering, landscaping and the like, and in the hoisting process, in order to stabilize the vehicle body and prevent the vehicle body from overturning, the rear supporting leg is required to be used.
The truck-mounted crane is because its inner space is little, for convenient use, cup joint for a plurality of cantilevers usually and install on the chassis, stretch out the cantilever during use again, but discovery in the in-service use, telescopic landing leg need lengthen the connection length between two cantilevers and improve joint strength, lead to this telescopic landing leg's total length shorter, make the support stability of this landing leg not high, and current landing leg only is provided with a backup pad usually, and the area of contact on this backup pad and ground is little, the support stability of this landing leg of further reduction, to above-mentioned problem, need improve existing equipment.
Disclosure of Invention
The invention aims to provide a rear support leg with a departure angle for a truck-mounted crane, which aims to solve the problems that the telescopic support leg proposed in the background art needs to be lengthened to improve the connection strength, the total length of the telescopic support leg is shorter, the support stability of the support leg is not high, the existing support leg is generally provided with only one support plate, the contact area of the support plate and the ground is small, and the support stability of the support leg is further reduced.
In order to achieve the purpose, the invention provides the following technical scheme: a rear supporting leg with a departure angle of a truck-mounted crane, which comprises a first cantilever, a hydraulic cylinder and a chute,
the left end of the first cantilever is fixedly provided with a connecting plate, the connecting plate is provided with a screw hole, a second cantilever is arranged in front of the first cantilever, a third cantilever is arranged in front of the second cantilever, a fourth cantilever is arranged in front of the third cantilever, the right end of the first cantilever, the left end of the second cantilever and the right end of the third cantilever are fixedly welded with a fixed plate, the fixed plate is rotatably connected with a connecting shaft, the connecting shaft is fixedly welded at the right end of the second cantilever, the left end of the third cantilever and the right end of the fourth cantilever, and the connecting shaft is connected with a first motor fixedly arranged at the lower side of the fixed plate;
the hydraulic cylinder is fixedly arranged inside the first cantilever, the second cantilever, the third cantilever and the fourth cantilever, a piston rod is arranged at the bottom of the hydraulic cylinder, a supporting plate is arranged at the bottom of the piston rod, a rubber pad is fixed at the bottom of the supporting plate, and a rib plate is fixed between the upper side of the supporting plate and the piston rod;
the spout, the spout is seted up on first cantilever right side, second cantilever left side and third cantilever right side, and the inside sliding connection of spout has the connecting rod, the inside fixed mounting of connecting rod one end has the second motor, and installs the gear at second motor top, the rack is installed to the spout inner wall, and the rack is connected with gear engagement, spacing hole has all been seted up on second cantilever right side, third cantilever left side and fourth cantilever right side.
Preferably, the first cantilever, the second cantilever, the third cantilever and the fourth cantilever have the same cross-sectional dimension.
Preferably, the central line of the rotating shaft fixed on the second cantilever, the rightmost end face of the first cantilever and the rightmost end face of the second cantilever are located on the same vertical plane, and the distance between the rotating shaft and the first cantilever is the same as that between the rotating shaft and the second cantilever.
Preferably, each group of the fixing plates are provided with two fixing plates, and the distance between the two fixing plates in the same group is equal to the height of the second cantilever.
Preferably, the hydraulic cylinders are four and are respectively and fixedly installed on the first cantilever, the second cantilever, the third cantilever and the fourth cantilever.
Preferably, the center line of the piston rod and the center line of the support plate are located on the same vertical line, and four rib plates are arranged in a cross shape by taking the piston rod as the center.
Preferably, the diameter of the supporting plate is larger than the width of the first cantilever, and the supporting plates are arranged in a staggered mode.
Preferably, the length dimension of the rack is equal to half of the length dimension of the sliding chute, and the length dimension of the sliding chute is equal to the length dimension of the connecting rod.
Preferably, the cross-sectional shape and size of the limiting hole are the same as those of the sliding groove, and the length of the limiting hole is equal to half of that of the connecting rod.
Compared with the prior art, the invention has the beneficial effects that: the truck-mounted crane is provided with a rear supporting leg with a departure angle,
(1) the connecting device is provided with a sliding groove, a connecting rod and a limiting hole, a first motor drives a connecting shaft to rotate, so that a first cantilever and a second cantilever are spliced, a second motor drives a gear to rotate, a gear and a rack are matched to push the connecting rod to slide along the sliding groove until the sliding groove slides to the inside of the limiting hole, the first cantilever and the second cantilever are reinforced through the connecting rod, the pressure borne by the first cantilever is conveniently transmitted to the second cantilever, and the connecting strength between the first cantilever and the second cantilever is improved;
(2) the support leg is provided with hydraulic cylinders, the first cantilever, the second cantilever, the third cantilever and the fourth cantilever are all fixedly provided with the hydraulic cylinders, when the support leg is used, support plates below the four hydraulic cylinders are simultaneously contacted with the ground, and are simultaneously supported through multiple points, so that the pressure borne by the first cantilever, the second cantilever, the third cantilever and the fourth cantilever is dispersed, and the support stability of the support leg is improved;
(3) be provided with gusset and backup pad, backup pad welded fastening is in the piston rod bottom, and makes the connection between backup pad and the piston rod more fastening through the gusset, and four cantilevers of foldable accomodating are convenient for install the bigger backup pad of diameter, improve the area of contact on backup pad and ground, further improve the stability of this landing leg, use more practically.
Drawings
FIG. 1 is a schematic top sectional view of the present invention;
FIG. 2 is a schematic top view of the present invention;
FIG. 3 is a schematic view of the present invention in an expanded bottom configuration;
FIG. 4 is a schematic view of the expanded top cross-sectional structure of the present invention;
FIG. 5 is a schematic view of the expanded front cross-section of the present invention;
FIG. 6 is a schematic left side sectional view of the first cantilever according to the present invention;
FIG. 7 is a schematic top view of the support plate of the present invention.
In the figure: 1. the cantilever comprises a first cantilever, a second cantilever, a connecting plate, a first screw hole, a second cantilever, a third cantilever, a fourth cantilever, a first motor, a second motor, a third cantilever, a fourth cantilever, a first fixing plate, a second fixing plate, a third connecting shaft, a second motor, a first motor, a second motor, a first rubber pad, a second rubber pad, a rib plate.
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.
Referring to fig. 1-7, the present invention provides a technical solution: a rear supporting leg with a departure angle for a truck-mounted crane is disclosed, as shown in figure 1, figure 2, figure 3 and figure 6, a connecting plate 2 is fixed at the left end of a first cantilever 1, a screw hole 3 is arranged on the connecting plate 2, the cross sections of the first cantilever 1, a second cantilever 4, a third cantilever 5 and a fourth cantilever 6 are the same, the first cantilever 1, the second cantilever 4, the third cantilever 5 and the fourth cantilever 6 form a folding supporting leg, the second cantilever 4 is arranged in front of the first cantilever 1, the third cantilever 5 is arranged in front of the second cantilever 4, the fourth cantilever 6 is arranged in front of the third cantilever 5, a central line of a rotating shaft fixed on the second cantilever 4, the end surface of the rightmost end of the first cantilever 1 and the end surface of the rightmost end of the second cantilever 4 are positioned on the same vertical plane, the distance between the rotating shaft and the first cantilever 1 and the second cantilever 4 is the same, the second cantilever 4 is rotated by taking a connecting shaft 8 as the, make second cantilever 4 rotatory 180 degrees, until second cantilever 4 and the laminating of first cantilever 1, and the central line of second cantilever 4 overlaps with the central line of first cantilever 1, first cantilever 1 right-hand member, 4 left ends of second cantilever and the 5 right-hand members of third cantilever all welded fastening have fixed plate 7, and rotate on the fixed plate 7 and be connected with connecting axle 8, every fixed plate 7 of group all is provided with two, and the interval between two fixed plates 7 of the same group equals the height of second cantilever 4, second cantilever 4 rotates with connecting axle 8, until second cantilever 4 imbeds between two fixed plates 7 on the first cantilever 1, connecting axle 8 welded fastening is at the 4 right-hand members of second cantilever, 5 left ends of third cantilever and the 6 right-hand members of fourth cantilever, and connecting axle 8 is connected with the first motor 9 of fixed mounting in fixed plate 7 downside.
As shown in fig. 1, 5 and 7, four hydraulic cylinders 10 are fixedly installed inside a first cantilever 1, a second cantilever 4, a third cantilever 5 and a fourth cantilever 6, and a piston rod 11 is installed at the bottom of each hydraulic cylinder 10, four hydraulic cylinders 10 are installed on the first cantilever 1, the second cantilever 4, the third cantilever 5 and the fourth cantilever 6, respectively, the plurality of hydraulic cylinders 10 simultaneously push the piston rod 11 to move down, so that the piston rod 11 pushes a support plate 12 to contact the ground, the stability of the support leg is improved by a multi-point simultaneous support mode, a support plate 12 is installed at the bottom of the piston rod 11, a rubber pad 13 is fixed at the bottom of the support plate 12, the center line of the piston rod 11 and the center line of the support plate 12 are located on the same vertical line, four rib plates 14 are arranged in a cross shape with the piston rod 11 as the center, and the rib plates 14 reinforce the connection strength between the support plate 12 and the piston, the diameter of the supporting plate 12 is larger than the width of the first cantilever 1, the supporting plates 12 are arranged in a staggered mode, the supporting plates 12 arranged in a staggered mode are convenient for the supporting leg to fold and contract, the contact area between the supporting plates 12 and the ground is increased, the stability of the supporting leg is further improved, and rib plates 14 are fixed between the upper side of each supporting plate 12 and the piston rod 11.
As shown in fig. 3, 4 and 5, the sliding groove 15 is formed on the right side of the first cantilever 1, the left side of the second cantilever 4 and the right side of the third cantilever 5, the inside of the sliding groove 15 is connected with the connecting rod 16 in a sliding manner, the inside of one end of the connecting rod 16 is fixedly provided with the second motor 17, the top of the second motor 17 is provided with the gear 18, the inner wall of the sliding groove 15 is provided with the rack 19, the rack 19 is meshed with the gear 18, the length of the rack 19 is equal to half of the length of the sliding groove 15, the length of the sliding groove 15 is equal to the length of the connecting rod 16, the connecting rod 16 is pushed to slide along the sliding groove 15 by the matching of the gear 18 and the rack 19 until the two ends of the connecting rod 16 are respectively embedded into the sliding groove 15 and the limiting hole 20, the right side of the second cantilever 4, the left side of the third cantilever 5 and the right side of the fourth, and the length dimension of the limiting hole 20 is equal to half of the length dimension of the connecting rod 16, so that the connecting rod 16 can be conveniently embedded into the limiting hole 20 in a sliding manner.
The working principle is as follows: when the truck-mounted crane is used for supporting the rear supporting leg with a self-removing angle, firstly, a bolt penetrates through a screw hole 3 to be in threaded connection with a chassis, a connecting plate 2 is connected and fastened with the chassis, an external power supply is switched on, a first motor 9 on a first cantilever 1 is started, the first motor 9 drives a connecting shaft 8 on a second cantilever 4 to rotate, the connecting shaft 8 drives the second cantilever 4 to rotate by taking the connecting shaft 8 as a weight until the second cantilever 4 rotates 180 degrees, the left end of the second cantilever 4 is attached to the first cantilever 1, a second motor 17 in the first cantilever 1 is started, the second motor 17 drives a gear 18 to rotate, the gear is matched with a rack 19 on the first cantilever 1 to push a connecting rod 16 to slide along a sliding groove 15 in the first cantilever 1 until the right side of the connecting rod 16 slides to the inside a limiting hole 20 in the second cantilever 4, and the connecting strength between the first cantilever 1 and the second cantilever 4 is improved through the connecting rod 16, similarly, the third cantilever 5 is connected to the second cantilever 4 and the fourth cantilever 6 is connected to the third cantilever 5, the hydraulic cylinder 10 is started, the hydraulic cylinder 10 pushes the piston rod 11 and the support plate 12 below the piston rod 11 to move downwards until the rubber pads 13 at the bottom of the support plate 12 contact the ground, the rib plate 14 improves the connection strength between the piston rod 11 and the support plate 12, the rubber pads 13 play a role of buffering and vibration reduction, the four rubber pads 13 below the four hydraulic cylinders 10 simultaneously contact the ground, the support stability is improved by a multi-point simultaneous support mode, the leg is folded and stored in a folding mode, the four hydraulic cylinders 10 are arranged in a staggered mode after being folded, mutual influence between different support plates 12 is avoided, the diameter size of the support plate 12 is convenient to improve, the contact area with the ground is increased, the stability of the leg is further improved, and therefore, all work is completed, and the content not described in detail in the specification belongs to the prior.
The terms "central," "longitudinal," "lateral," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for simplicity of description only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, constructed and operative in a particular orientation, and are not to be considered limiting of the claimed invention.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (9)
1. The utility model provides a landing leg behind angle is left from area to lorry-mounted crane, includes first cantilever (1), pneumatic cylinder (10) and spout (15), its characterized in that:
the cantilever structure comprises a first cantilever (1), wherein a connecting plate (2) is fixed at the left end of the first cantilever (1), a screw hole (3) is formed in the connecting plate (2), a second cantilever (4) is arranged in front of the first cantilever (1), a third cantilever (5) is arranged in front of the second cantilever (4), a fourth cantilever (6) is arranged in front of the third cantilever (5), a fixing plate (7) is fixedly welded at the right end of the first cantilever (1), the left end of the second cantilever (4) and the right end of the third cantilever (5), a connecting shaft (8) is rotatably connected to the fixing plate (7), the connecting shaft (8) is fixedly welded at the right end of the second cantilever (4), the left end of the third cantilever (5) and the right end of the fourth cantilever (6), and the connecting shaft (8) is connected with a first motor (9) fixedly installed on the lower side of the fixing plate (7);
the hydraulic cylinder (10) is fixedly installed inside the first cantilever (1), the second cantilever (4), the third cantilever (5) and the fourth cantilever (6), a piston rod (11) is installed at the bottom of the hydraulic cylinder (10), a supporting plate (12) is installed at the bottom of the piston rod (11), a rubber pad (13) is fixed at the bottom of the supporting plate (12), and a rib plate (14) is fixed between the upper side of the supporting plate (12) and the piston rod (11);
spout (15), spout (15) are seted up on first cantilever (1) right side, second cantilever (4) left side and third cantilever (5) right side, and spout (15) inside sliding connection has connecting rod (16), the inside fixed mounting of connecting rod (16) one end has second motor (17), and second motor (17) top installs gear (18), rack (19) are installed to spout (15) inner wall, and rack (19) are connected with gear (18) meshing, spacing hole (20) have all been seted up on second cantilever (4) right side, third cantilever (5) left side and fourth cantilever (6) right side.
2. The trailing leg of claim 1, further comprising: the cross-sectional sizes of the first cantilever (1), the second cantilever (4), the third cantilever (5) and the fourth cantilever (6) are the same.
3. The trailing leg of claim 1, further comprising: the center line of a rotating shaft fixed on the second cantilever (4) is positioned on the same vertical plane with the rightmost end face of the first cantilever (1) and the rightmost end face of the second cantilever (4), and the rotating shaft is the same as the first cantilever (1) and the second cantilever (4) in distance.
4. The trailing leg of claim 1, further comprising: every group fixed plate (7) all are provided with two, and the interval between two fixed plates (7) of the same group equals the height of second cantilever (4).
5. The trailing leg of claim 1, further comprising: the four hydraulic cylinders (10) are arranged and fixedly mounted on the first cantilever (1), the second cantilever (4), the third cantilever (5) and the fourth cantilever (6) respectively (10).
6. The trailing leg of claim 1, further comprising: the center line of the piston rod (11) and the center line of the support plate (12) are positioned on the same vertical line, and four rib plates (14) are arranged in a cross shape by taking the piston rod (11) as the center.
7. The trailing leg of claim 1, further comprising: the diameter of the supporting plate (12) is larger than the width of the first cantilever (1), and the supporting plates (12) are arranged in a staggered mode.
8. The trailing leg of claim 1, further comprising: the length dimension of the rack (19) is equal to half of the length dimension of the sliding chute (15), and the length dimension of the sliding chute (15) is equal to the length dimension of the connecting rod (16).
9. The trailing leg of claim 1, further comprising: the cross-sectional shape and size of the limiting hole (20) is the same as that of the sliding groove (15), and the length size of the limiting hole (20) is equal to half of that of the connecting rod (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010956703.7A CN112158747B (en) | 2020-09-12 | 2020-09-12 | Truck-mounted crane rear supporting leg with departure angle |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010956703.7A CN112158747B (en) | 2020-09-12 | 2020-09-12 | Truck-mounted crane rear supporting leg with departure angle |
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| Publication Number | Publication Date |
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| CN112158747A true CN112158747A (en) | 2021-01-01 |
| CN112158747B CN112158747B (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010956703.7A Active CN112158747B (en) | 2020-09-12 | 2020-09-12 | Truck-mounted crane rear supporting leg with departure angle |
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| CN207699071U (en) * | 2017-12-27 | 2018-08-07 | 天津昊荣自动化工程有限公司 | The arm-type cantilever crane of multi-joint telescoping |
| CN110654996A (en) * | 2019-11-01 | 2020-01-07 | 三一汽车起重机械有限公司 | Supporting leg structure and crane |
| CN110790156A (en) * | 2019-11-09 | 2020-02-14 | 许昌许继风电科技有限公司 | Fixed column type folding arm crane |
| CN211034990U (en) * | 2019-12-17 | 2020-07-17 | 湖南屏风马机械科技有限公司 | Swing type supporting leg |
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2020
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Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201560075U (en) * | 2009-10-24 | 2010-08-25 | 威海广泰空港设备股份有限公司 | Crab-claw type outrigger device |
| CN202657874U (en) * | 2012-07-12 | 2013-01-09 | 辽宁抚挖重工机械股份有限公司 | Folding type bearing mechanism of crawler crane |
| CN204297987U (en) * | 2014-12-12 | 2015-04-29 | 中联重科股份有限公司 | Engineering machine and supporting leg device thereof |
| CN105152035A (en) * | 2015-09-23 | 2015-12-16 | 哈尔滨工业大学 | Disassembly and assembly system for optical crystal components |
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| CN207699071U (en) * | 2017-12-27 | 2018-08-07 | 天津昊荣自动化工程有限公司 | The arm-type cantilever crane of multi-joint telescoping |
| CN108016997A (en) * | 2018-01-11 | 2018-05-11 | 河南恩湃高科集团有限公司 | A kind of narrow space crane support |
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| CN110790156A (en) * | 2019-11-09 | 2020-02-14 | 许昌许继风电科技有限公司 | Fixed column type folding arm crane |
| CN211034990U (en) * | 2019-12-17 | 2020-07-17 | 湖南屏风马机械科技有限公司 | Swing type supporting leg |
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| CN112158747B (en) | 2022-06-17 |
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