Light hinged type folding arm crane

Abstract

The utility model discloses a light hinged type folding arm crane, which relates to the field of light and small cranes, and comprises a stand column arranged on the ground of a construction site, and a swing mechanism arranged at the top of the stand column; one end of the first-section arm is connected with the slewing mechanism, the other end of the first-section arm is connected with one end of the second-section arm through a joint mechanism, and the other end of the second-section arm is provided with an electric lifting mechanism; the first knuckle arm and the second knuckle arm are arranged on different planes, and the slewing mechanism and the joint mechanism respectively comprise a first crossed roller bearing and a second crossed roller bearing; according to the crane, the first-section arm and the second-section arm are connected through the crossed roller bearing, and the first-section arm and the second-section arm are arranged on different planes, so that a 360-degree wireless rotation mode of the second-section arm can be realized.

Description

Technical Field

[0001] The utility model belongs to the field of light and small cranes, and more specifically, relates to a light articulated folding arm crane. Background Art

[0002] Light articulated folding arm cranes belong to the field of light and small cranes. Combined with the current development of the manufacturing industry, in order to reduce the labor intensity of workers and reduce the production costs of enterprises. The company combines market demand and adopts the distribution of multiple stations according to the actual needs of customers on site, and develops and designs light articulated folding arm cranes. At present, traditional jib cranes and folding arm cranes are mainly composed of a boom and a column. The equipment can only work within the operating range of the lifting mechanism within the coverage range of the work, and the current folding arm crane can only cover the rotation angle range of the first and second booms within 270°. At least two folding arm cranes are required for hoisting to cover the entire construction site. Utility Model Content

[0003] The purpose of the utility model is to provide a light articulated folding arm crane in view of the deficiencies in the prior art. The crane connects a first-section arm and a second-section arm with a cross roller bearing, and arranges the first-section arm and the second-section arm on different planes, so that the two-section arm can complete a 360° wireless rotation mode.

[0004] In order to achieve the above object, the utility model provides a light articulated folding arm crane, comprising:

[0005] A column is arranged on the ground at the construction site, and a slewing mechanism is arranged on the top of the column;

[0006] A first-section arm, one end of which is connected to the slewing mechanism, the other end of which is connected to one end of a second-section arm through a joint mechanism, and the other end of which is provided with an electric lifting mechanism;

[0007] The first-section arm and the second-section arm are arranged on different planes, and the slewing mechanism and the joint mechanism respectively include a first cross roller bearing and a second cross roller bearing.

[0008] Optionally, the column includes a metal tube, the bottom and top ends of the metal tube are respectively provided with a lower flange plate and an upper flange plate, the outer periphery of the metal tube is provided with a supporting rib plate, and the bottom of the supporting rib plate is connected to the lower flange plate.

[0009] Optionally, the rotating mechanism also includes a first damping mechanism, the first cross-roller bearing includes a first inner ring connected to the one arm section and a first outer ring connected to the column, a first roller is arranged between the first inner ring and the first outer ring, the first damping mechanism includes a first damping ring and a first damping block, the first damping ring is arranged on the outer periphery of the first outer ring, the first damping block is arranged on the lower side of the one arm section, and the first damping ring cooperates with the first damping block.

[0010] Optionally, the first-section arm includes a first metal tube, first rectangular tubes are respectively provided at both ends of the first metal tube, a first flange plate is provided at the bottom of the first rectangular tube, the first flange plate close to one end of the column is connected to the rotating mechanism, and the first flange plate close to one end of the second-section arm is connected to the joint mechanism.

[0011] Optionally, an escape opening is provided at one end of the first metal tube close to the second-section arm, and the escape opening cooperates with the joint mechanism.

[0012] Optionally, the rotating mechanism includes a second damping mechanism, the second cross roller bearing includes a second outer ring connected to the first arm and a second inner ring connected to the second arm, a second roller is arranged between the second inner ring and the second outer ring, the second damping mechanism includes a second damping ring and a second damping block, the second damping ring is arranged on the outer periphery of the second outer ring, the second damping block is arranged on the upper side of the second arm, and the second damping ring cooperates with the second damping block.

[0013] Optionally, the two-section arm includes a second metal tube, a second rectangular tube is provided at one end of the second metal tube, a second flange plate is provided at the top of the second rectangular tube, and the other end of the second metal tube is detachably connected to the electric lifting mechanism.

[0014] Optionally, the electric lifting mechanism includes an electric chain hoist, and the electric chain hoist is connected to the two-section arm.

[0015] Optionally, the load of the electric chain hoist is 80Kg to 500Kg.

[0016] Optionally, the slewing mechanism and the joint mechanism are respectively provided with a plurality of collector rings, and the collector rings are connected to a power supply harness and a signal harness.

[0017] The utility model provides a light articulated folding arm crane, which has the beneficial effect that a damping ring is arranged on the outer periphery of a cross roller bearing in a slewing mechanism and a joint mechanism of the crane, and a damping block is arranged correspondingly, so that when the crane is set on a site with an uneven ground, the crane will not have a jib slip phenomenon.

[0018] Other features and advantages of the present invention will be described in detail in the subsequent specific implementation section. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of exemplary embodiments of the present invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the present invention.

[0020] Figure 1 A structural schematic diagram of a light articulated folding arm crane according to an embodiment of the utility model is shown.

[0021] Figure 2 A schematic diagram showing the positions of column components and cross roller bearings according to an embodiment of the utility model is shown.

[0022] Figure 3 A structural schematic diagram of a rotary mechanism according to an embodiment of the utility model is shown.

[0023] Figure 4 A structural schematic diagram of a joint mechanism according to an embodiment of the utility model is shown.

[0024] Description of reference numerals:

[0025] 1. Column; 2. Rotating mechanism; 3. First arm; 4. Joint mechanism; 5. Second arm; 6. Electric lifting mechanism; 7. First cross roller bearing; 8. Second cross roller bearing; 9. Metal pipe; 10. Lower flange plate; 11. Upper flange plate; 12. Support rib plate; 13. First inner ring; 14. First outer ring; 15. First damping ring; 16. First damping block; 17. Avoidance; 18. Second outer ring; 19. Second inner ring; 20. Second damping ring; 21. Second damping block. DETAILED DESCRIPTION

[0026] The preferred embodiments of the present invention will be described in more detail below. Although the preferred embodiments of the present invention are described below, it should be understood that the present invention can be implemented in various forms and should not be limited by the embodiments described herein. On the contrary, these embodiments are provided to make the present invention more thorough and complete, and to fully convey the scope of the present invention to those skilled in the art.

[0027] The utility model provides a light articulated folding arm crane, comprising:

[0028] A column is arranged on the ground at the construction site, and a slewing mechanism is arranged on the top of the column;

[0029] A first-section arm, one end of which is connected to the slewing mechanism, the other end of which is connected to one end of a second-section arm through a joint mechanism, and the other end of the second-section arm is provided with an electric lifting mechanism;

[0030] The first-section arm and the second-section arm are arranged on different planes, and the slewing mechanism and the joint mechanism respectively include a first cross roller bearing and a second cross roller bearing.

[0031] Specifically, the crane includes a column, a first boom, a second boom and an electric lifting mechanism, and a slewing mechanism and a joint mechanism are arranged at both ends of the first boom. Since the first boom and the second boom are arranged on different planes respectively, the second boom will not be restricted when rotating. Under the action of the cross roller bearing, the first boom and the second boom can rotate without resistance, thereby improving the mobility of the crane.

[0032] Optionally, the column includes a metal tube, the bottom and top ends of the metal tube are respectively provided with a lower flange plate and an upper flange plate, the outer periphery of the metal tube is provided with a supporting rib plate, and the bottom of the supporting rib plate is connected to the lower flange plate.

[0033] Specifically, the main body of the column is a metal pipe, which is vertically arranged on the ground at the construction site. Flange plates are arranged at both ends of the metal pipe to increase the contact area of ​​the metal pipe and improve the fixing strength of the crane. In addition, a plurality of supporting ribs are arranged between the metal pipe and the lower flange plate to further improve the supporting strength of the metal pipe.

[0034] Optionally, the slewing mechanism also includes a first damping mechanism, the first cross roller bearing includes a first inner ring connected to a section arm and a first outer ring connected to a column, a first roller is arranged between the first inner ring and the first outer ring, the first damping mechanism includes a first damping ring and a first damping block, the first damping ring is arranged on the outer periphery of the first outer ring, the first damping block is arranged on the lower side of a section arm, and the first damping ring cooperates with the first damping block.

[0035] Specifically, the slewing mechanism is arranged between the column and an arm section, the first outer ring is connected to the upper flange plate, and the first inner ring is connected to the arm section, so that the arm section can rotate around the column without jamming under the action of the first cross roller bearing; in addition, a first damping ring is arranged on the outer periphery of the first outer ring, and a first damping block is arranged on the lower side of the arm section, and the first damping ring is in contact with the first damping block. When the arm section rotates around the column, the arm section is prevented from slipping due to the uneven ground at the construction site.

[0036] Optionally, a first arm section includes a first metal tube, first rectangular tubes are respectively provided at both ends of the first metal tube, a first flange plate is provided at the bottom of the first rectangular tube, the first flange plate close to one end of the column is connected to the rotating mechanism, and the first flange plate close to one end of the second arm section is connected to the joint mechanism.

[0037] Specifically, the main load-bearing component of the first arm is the first metal tube, which is connected to the slewing mechanism and the joint mechanism through the first rectangular tube; because the first arm and the second arm are arranged on different planes, the second arm can rotate 360° around the joint mechanism under the action of the second cross roller bearing. The first flange plate is not only a carrier connecting the first arm and the slewing mechanism, but also plays a role in connecting and transmitting torque, and can perform positioning correction.

[0038] Optionally, an escape opening is provided at one end of the first metal tube close to the second-section arm, and the escape opening cooperates with the joint mechanism.

[0039] Optionally, the slewing mechanism includes a second damping mechanism, the second cross roller bearing includes a second outer ring connected to the first arm and a second inner ring connected to the second arm, a second roller is arranged between the second inner ring and the second outer ring, the second damping mechanism includes a second damping ring and a second damping block, the second damping ring is arranged on the outer periphery of the second outer ring, the second damping block is arranged on the upper side of the second arm, and the second damping ring cooperates with the second damping block.

[0040] Specifically, the slewing mechanism rotatably connects the first and second arms through the second outer ring and the second inner ring, and a second damping ring is provided on the outer periphery of the second outer ring, and a second damping block is provided on the second arm, and the second damping block is in contact with the second damping ring to overcome the rotation speed and angle of the second arm and the first arm, so that the second arm can rotate flexibly without slipping, and can also avoid the second arm rotating too fast, resulting in a poor experience for workers. In addition, when the second arm rotates around the first arm, the first arm and the second arm will overlap up and down, so that the second damping block on the second arm may interfere with the lower side of the first arm, and a clearance is provided on the first arm to avoid the second damping block from colliding with the first arm.

[0041] Optionally, the second-section arm includes a second metal tube, a second rectangular tube is arranged at one end of the second metal tube, a second flange plate is arranged on the top of the second rectangular tube, and the other end of the second metal tube is detachably connected to the electric lifting mechanism.

[0042] Specifically, the second flange plate connects the two arms and the joint mechanism as the same carrier, and a multi-circuit collector ring is installed at the center of the second flange plate; the second metal tube and the electric lifting mechanism are set to be detachably connected, so that the electric lifting mechanism can be replaced according to the requirements of the lifting.

[0043] In one embodiment, a hoist hanging plate is provided at the end of the second-section arm, which is processed by a CNC machining center through arc transition and subjected to quenching and tempering annealing so that no stress singularity is generated between the hook on the chain hoist and the hanging plate under load.

[0044] Optionally, the electric lifting mechanism includes an electric chain hoist, and the electric chain hoist is connected to the two-section arm.

[0045] Optionally, the load of the electric chain hoist is 80Kg to 500Kg.

[0046] This light articulated folding arm crane greatly reduces the coverage blind area of ​​the traditional cantilever crane through the matching combination of the first and second booms and the cross roller bearings, and makes more full use of the plant space and reduces the compatibility with other supporting equipment. The on-site use of the product and customer feedback show that the effect is quite satisfactory. At the same time, there is a lot of room for improvement in the matching degree of pneumatic clamps or hoists. In the process of involving, the internal space of the first and second booms is reasonably utilized, and the welded parts can not only transmit compressed air but also realize the function of energy storage through the air tightness test.

[0047] Optionally, a plurality of collector rings are respectively provided in the slewing mechanism and the joint mechanism, and the collector rings are connected to the power supply harness and the signal harness.

[0048] Specifically, when the first arm and the second arm rotate relative to each other, the collector ring can also ensure normal power connection and control signal transmission.

[0049] Example

[0050] like Figures 1 to 4 As shown, the utility model provides a light articulated folding arm crane, comprising:

[0051] A column 1 is arranged on the ground at the construction site, and a slewing mechanism 2 is arranged on the top of the column;

[0052] A first-section arm 3, one end of which is connected to the slewing mechanism 2, and the other end of the first-section arm 3 is connected to one end of a second-section arm 5 through a joint mechanism 4, and the other end of the second-section arm 5 is provided with an electric lifting mechanism 6;

[0053] The first section arm 3 and the second section arm 5 are arranged on different planes, and the slewing mechanism 2 and the joint mechanism 4 respectively include a first cross roller bearing 7 and a second cross roller bearing 8.

[0054] In this embodiment, the column 1 includes a metal tube 9, and a lower flange plate 10 and an upper flange plate 11 are respectively provided at the bottom and top ends of the metal tube 9. A supporting rib plate 12 is provided on the outer periphery of the metal tube 9, and the bottom of the supporting rib plate 12 is connected to the lower flange plate 10.

[0055] In this embodiment, the slewing mechanism 2 also includes a first damping mechanism, the first cross roller bearing 7 includes a first inner ring 13 connected to a section arm 3 and a first outer ring 14 connected to the column 1, a first roller is arranged between the first inner ring 13 and the first outer ring 14, the first damping mechanism includes a first damping ring 15 and a first damping block 16, the first damping ring 15 is arranged on the outer periphery of the first outer ring 14, the first damping block 16 is arranged on the lower side of a section arm 3, and the first damping ring 15 cooperates with the first damping block 16.

[0056] In this embodiment, a first arm 3 includes a first metal tube, first rectangular tubes are respectively provided at both ends of the first metal tube, a first flange plate is provided at the bottom of the first rectangular tube, the first flange plate close to one end of the column 1 is connected to the rotating mechanism 2, and the first flange plate close to one end of the second arm 5 is connected to the joint mechanism 4.

[0057] In this embodiment, an escape opening 17 is provided at one end of the first metal tube close to the second-section arm 5 , and the escape opening 17 cooperates with the joint mechanism 4 .

[0058] In this embodiment, the slewing mechanism 4 includes a second damping mechanism, the second cross roller bearing includes a second outer ring 18 connected to the first arm 3 and a second inner ring 19 connected to the second arm 5, a second roller is arranged between the second inner ring 19 and the second outer ring 18, the second damping mechanism includes a second damping ring 20 and a second damping block 21, the second damping ring 20 is arranged on the outer periphery of the second outer ring 18, the second damping block 21 is arranged on the upper side of the second arm 5, and the second damping ring 20 cooperates with the second damping block 21.

[0059] In this embodiment, the second-section arm 5 includes a second metal tube, one end of which is provided with a second rectangular tube, the top of which is provided with a second flange plate, and the other end of the second metal tube is detachably connected to the electric lifting mechanism 6.

[0060] In this embodiment, the electric lifting mechanism 6 includes an electric chain hoist, and the electric chain hoist is connected to the two-section boom 5 .

[0061] In this embodiment, the load of the electric chain hoist is 80Kg to 500Kg.

[0062] In this embodiment, the slewing mechanism 2 and the joint mechanism 4 are respectively provided with multiple collector rings, and the collector rings are connected to the power supply harness and the signal harness.

[0063] In summary, the light articulated folding arm crane sets the first boom 3 and the second boom 5 on different planes, and respectively sets the first cross roller bearing 7 and the second cross roller bearing 8 in the slewing mechanism 2 and the joint mechanism 4, so that the first boom 3 and the second boom 5 can rotate freely 360°, and damping rings and damping blocks are set on the outer periphery of the cross roller bearings, so as to avoid the arm slipping phenomenon when the crane is set on uneven ground, and at the same time can improve the workers' operating experience of the crane.

[0064] The various embodiments of the utility model have been described above, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A light articulated folding arm crane, characterized in that: include: A column is arranged on the ground at the construction site, and a slewing mechanism is arranged on the top of the column; A first-section arm, one end of which is connected to the slewing mechanism, the other end of which is connected to one end of a second-section arm through a joint mechanism, and the other end of which is provided with an electric lifting mechanism; The first section arm and the second section arm are arranged on different planes, and the slewing mechanism and the joint mechanism respectively include a first cross roller bearing and a second cross roller bearing.

2. The light articulated folding arm crane according to claim 1, characterized in that: The column comprises a metal tube, the bottom and top ends of the metal tube are respectively provided with a lower flange plate and an upper flange plate, the outer periphery of the metal tube is provided with a supporting rib plate, and the bottom of the supporting rib plate is connected to the lower flange plate.

3. The light articulated folding arm crane according to claim 1, characterized in that: The slewing mechanism also includes a first damping mechanism, the first cross roller bearing includes a first inner ring connected to the one arm section and a first outer ring connected to the column, a first roller is arranged between the first inner ring and the first outer ring, the first damping mechanism includes a first damping ring and a first damping block, the first damping ring is arranged on the outer periphery of the first outer ring, the first damping block is arranged on the lower side of the one arm section, and the first damping ring cooperates with the first damping block.

4. The light articulated folding arm crane according to claim 1, characterized in that: The first-section arm includes a first metal tube, and first rectangular tubes are respectively arranged at both ends of the first metal tube. A first flange plate is arranged at the bottom of the first rectangular tube. The first flange plate close to one end of the column is connected to the rotating mechanism, and the first flange plate close to one end of the second-section arm is connected to the joint mechanism.

5. The light articulated folding arm crane according to claim 4, characterized in that: An escape opening is provided at one end of the first metal tube close to the second-section arm, and the escape opening cooperates with the joint mechanism.

6. The light articulated folding arm crane according to claim 1, characterized in that: The rotating mechanism includes a second damping mechanism, the second cross roller bearing includes a second outer ring connected to the first arm and a second inner ring connected to the second arm, a second roller is arranged between the second inner ring and the second outer ring, the second damping mechanism includes a second damping ring and a second damping block, the second damping ring is arranged on the outer periphery of the second outer ring, the second damping block is arranged on the upper side of the second arm, and the second damping ring cooperates with the second damping block.

7. The light articulated folding arm crane according to claim 1, characterized in that: The two-section arm includes a second metal tube, one end of which is provided with a second rectangular tube, the top of which is provided with a second flange plate, and the other end of the second metal tube is detachably connected to the electric lifting mechanism.

8. The light articulated folding arm crane according to claim 1, characterized in that: The electric lifting mechanism comprises an electric chain hoist, and the electric chain hoist is connected to the two-section arm.

9. The light articulated folding arm crane according to claim 8, characterized in that: The load of the electric chain hoist is 80Kg to 500Kg.

10. The light articulated folding arm crane according to claim 1, characterized in that: The slewing mechanism and the joint mechanism are respectively provided with multiple collector rings, and the collector rings are connected to the power supply harness and the signal harness.

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