Electric single-beam crane easy to maintain

Abstract

The utility model discloses an electric single-beam crane easy to maintain, which comprises a base, a first upright post fixedly mounted at the upper end of the base, a second upright post movably mounted in the first upright post, a track beam arranged at the upper end of the second upright post, and a fixed shaft fixedly mounted at one end of the track beam, a first motor is fixedly installed at the lower end of the track beam and electrically connected with an external controller through a cable, a driving wheel is fixedly installed at the output end of the first motor, and one end of the track beam is movably installed on the second stand column through a fixing shaft. By means of the arrangement of a second motor and a lead screw, a second stand column can be driven to ascend and descend in a first stand column, so that disassembly and assembly of a track beam and an electric hoist are facilitated, and personnel do not need to climb up to operate; and by means of the arrangement of a fixed pipe base, a limiting ring and a bearing block, a bearing groove and a limiting groove in the outer side of the second stand column are matched. And a stable supporting force can be provided for the lifted second stand column, and the hoisting stability of objects is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of cranes, in particular to an electric single-beam crane which is easy to maintain. Background Art

[0002] Electric single-girder crane is a convenient lifting equipment, widely used in material handling in factories, warehouses and other places. Its characteristics are that it has a single beam as the main structure, and an electric hoist is installed on the beam as the lifting mechanism, which realizes the lifting and moving of objects through electric drive.

[0003] For example, the Chinese utility model patent disclosed in publication number CN216764069U: an easily detachable cantilever crane, the application uses a bidirectional threaded rod, a limit rod, a mounting seat and a first bevel gear and other structures in conjunction with an insertion rod, a limit block, a mounting block and a connecting rod, wherein the two limit rods move relative to each other to restore the first spring to its initial state, thereby causing the two extrusion plates to move away from each other, thereby driving the connecting rod to move, and the movement of the connecting rod can cause the insertion rod to disengage from the limit groove provided on the limit block, thereby releasing the second limit on the mounting seat, and then releasing the support on the column body. The second limit is set, and then the screws are turned to disengage the mounting block from the column body, thereby releasing the third limit on the column body, so that the cantilever crane body can be completely separated from the column body and the disassembly is completed. However, since the installation position of the cantilever crane body has a certain height, although this application realizes a disassembly and assembly function of the cantilever crane body, it will cause inconvenience in disassembling both the electric hoist on the cantilever crane and the cantilever crane body, because the height of the cantilever crane makes it difficult for the operator to directly reach the electric hoist and the various components of the cantilever crane, thereby increasing the difficulty of installation and disassembly. During the installation or disassembly process, the operator may need to use a ladder, scaffolding or other auxiliary equipment to approach the cantilever crane, which not only increases the complexity of the work, but also may introduce safety risks. Utility Model Content

[0004] The purpose of the utility model is to provide an electric single-girder crane that is easy to maintain and can effectively solve the problems in the background technology.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] An electric single-beam crane that is easy to maintain comprises a base, a first column being fixedly mounted on the upper end of the base, a second column being movably mounted in the first column, a track beam being provided on the upper end of the second column, a fixed shaft being fixedly mounted on one end of the track beam, a first motor being fixedly mounted on the lower end of the track beam, the first motor being electrically connected to an external controller via a cable, a driving wheel being fixedly mounted on the output end of the first motor, one end of the track beam being movably mounted on the second column via a fixed shaft, and the driving wheel being rollingly mounted on the outer side of the second column, an electric hoist being movably mounted on the lower end of the track beam, a fixed pipe seat being fixedly mounted on the upper end of the first column, and a limiting ring being movably mounted on the upper end of the fixed pipe seat.

[0007] As a further optimization solution of the present invention, a second motor is fixedly installed at the center position of the lower end of the first column. The second motor is also located in the base, and the second motor is electrically connected to an external controller through a cable.

[0008] As a further optimization scheme of the present utility model, four limiting guide rails are fixedly installed on the inner side of the first column, and a screw rod is provided at the bottom of the first column. The lower end of the screw rod passes through the bearing seat at the bottom of the first column and is fixedly connected to the output end of the second motor. The screw rod is driven to rotate by the second motor, so that the second column can be raised and lowered within the first column.

[0009] As a further optimization scheme of the present invention, a supporting groove is provided on the outside of the second column, four sliding grooves are provided on the top of the supporting groove, and a limiting groove is also provided on the top of the supporting groove between two of the sliding grooves. A connecting frame is fixedly installed at the lower position inside the second column, the lower end of the second column is inserted and installed in the first column, the sliding groove is slidably installed on the corresponding limiting guide rail, and the center position inside the connecting frame is threadedly connected to the screw rod.

[0010] As a further optimization solution of the present invention, a fixing ring is fixedly installed on the upper end of the fixed pipe seat. Through the arrangement of the fixed pipe seat and the fixing ring, the rotation installation and adjustment of the limit ring can be realized.

[0011] As a further optimization scheme of the present invention, a rotation groove is opened on the inner side of the limit ring, and four supporting blocks are fixedly installed on the inner side of the limit ring located above the rotation groove. The limit ring is rotatably installed on the fixed ring through the rotation groove, and the supporting blocks are inserted and installed in the slide groove or the limit groove. By using the rotatable limit ring, cooperating with the supporting blocks, the supporting groove and the limit groove, it is possible to achieve a stable supporting force for the second column after the second column is lifted, in cooperation with the screw rod.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] The utility model discloses an easy-to-maintain electric single-beam crane. With the help of a second motor and a screw rod, the second column can be driven to move up and down within the first column, thereby facilitating the disassembly and assembly of the track beam and the electric hoist without the need for personnel to climb up to operate.

[0014] With the help of the setting of the fixed pipe seat, the limiting ring and the supporting block, and the supporting groove and the limiting groove on the outside of the second column, a stable supporting force can be provided for the raised second column to ensure the stability of the lifting of the items. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0016] Figure 2 This is a cross-sectional view of the main structure of the utility model;

[0017] Figure 3 This is a schematic diagram of the disassembled structure of the fixed pipe seat and the limiting ring of the utility model.

[0018] In the figure: 1. Base; 2. First column; 3. Second column; 4. Track beam; 5. Fixed shaft; 6. First motor; 7. Driving wheel; 8. Electric hoist; 9. Fixed pipe seat; 10. Limiting ring; 11. Second motor; 12. Limiting guide rail; 13. Screw; 14. Connecting frame; 15. Supporting groove; 16. Slide groove; 17. Limiting groove; 18. Fixed ring; 19. Rotating groove; 20. Supporting block. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods.

[0020] like Figure 1-Figure 3 As shown, the utility model provides an electric single-girder crane that is easy to maintain, including a base 1, a first column 2 is fixedly installed on the upper end of the base 1, a second column 3 is movably installed in the first column 2, a track beam 4 is provided on the upper end of the second column 3, a fixed shaft 5 is fixedly installed at one end of the track beam 4, a first motor 6 is fixedly installed at the lower end of the track beam 4, the first motor 6 is electrically connected to an external controller through a cable, a driving wheel 7 is fixedly installed at the output end of the first motor 6, one end of the track beam 4 is movably installed on the second column 3 through the fixed shaft 5, and the driving wheel 7 is rollingly installed on the outside of the second column 3, an electric hoist 8 is also movably installed on the lower end of the track beam 4, a fixed pipe seat 9 is fixedly installed on the upper end of the first column 2, and a limiting ring 10 is movably installed on the upper end of the fixed pipe seat 9.

[0021] like Figure 2As shown, a second motor 11 is fixedly installed at the center position of the lower end of the first column 2. The second motor 11 is also located in the base 1 and is electrically connected to an external controller through a cable. Four limiting guide rails 12 are fixedly installed on the inner side of the first column 2. A screw rod 13 is provided at the bottom of the first column 2. The lower end of the screw rod 13 passes through the bearing seat at the bottom of the first column 2 and is fixedly connected to the output end of the second motor 11. The screw rod 13 is driven to rotate by the second motor 11, so that the second column 3 can be raised and lowered in the first column 2.

[0022] like Figure 2-Figure 3 As shown, a supporting groove 15 is provided on the outside of the second column 3, and four slide grooves 16 are provided on the top of the supporting groove 15. A limiting groove 17 is also provided on the top of the supporting groove 15 between the two slide grooves 16. A connecting frame 14 is fixedly installed at the lower position in the second column 3. The lower end of the second column 3 is inserted and installed in the first column 2. The slide groove 16 is slidably installed on the corresponding limiting guide rail 12, and the center position in the connecting frame 14 is threadedly connected to the screw rod 13. A fixing ring 18 is fixedly installed on the upper end of the fixed pipe seat 9. By setting the fixed pipe seat 9 and the fixing ring 18 , the limit ring 10 can be rotated, installed and adjusted. A rotation groove 19 is provided on the inner side of the limit ring 10. Four supporting blocks 20 are fixedly installed on the inner side of the limit ring 10 above the rotation groove 19. The limit ring 10 is rotatably installed on the fixed ring 18 through the rotation groove 19, and the supporting blocks 20 are inserted and installed in the slide groove 16 or the limit groove 17. By utilizing the rotatable limit ring 10, in combination with the supporting blocks 20 and the supporting groove 15 and the limit groove 17, it is possible to achieve a stable supporting force for the second column 3 after the second column 3 is lifted in cooperation with the screw rod 13.

[0023] It should be noted that the present invention is an electric single-beam crane that is easy to maintain. When the track beam 4 or the electric hoist 8 is disassembled for maintenance, the second motor 11 can be started by an external controller. Then, the output end of the second motor 11 drives the screw rod 13 to rotate in the connecting frame 14. Since the limiting groove 17 on the outer side of the second column 3 is stuck on the corresponding supporting block 20, the axial movement of the second column 3 is restricted, and the screw rod 13 drives the connecting frame 14 to move the second column 3 up a certain distance in the first column 2, so that the limiting groove 17 moves from the corresponding The supporting block 20 is disengaged from the supporting block 20, and then the limiting ring 10 is rotated on the fixing ring 18 through the rotating groove 19, so that the supporting block 20 on the inner side of the limiting ring 10 is rotated to the position below the corresponding slide groove 16, and then the output end of the second motor 11 is driven by the controller to rotate in the opposite direction, so that the screw rod 13 continues to rotate in the screw hole in the connecting frame 14, and the second column 3 gradually moves downward in the first column 2, and the slide groove 16 slides on the corresponding limiting guide rail 12, thereby facilitating the disassembly and maintenance of the track beam 4 or the electric hoist 8 by lowering the height of the second column 3;

[0024] When the track beam 4 is lifted, the output end of the second motor 11 can be driven by the controller to drive the screw rod 13 to rotate in the connecting frame 14, so that the second column 3 moves up in the first column 2, and then, the limit ring 10 continues to rotate a certain angle on the fixed ring 18 through the rotating groove 19, so that the limit ring 10 drives the supporting block 20 to disengage from the corresponding slide groove 16 and move along the annular groove on the outside of the second column 3 to the position below the corresponding limit groove 17, and then, through the reverse rotation of the second motor 11, the screw rod 13 drives the second column 3 to move down a certain distance, and the limit groove 17 is inserted into the supporting block 20, which can cooperate with the screw rod 13 to provide more stable support and limiting capability for the second column 3.

[0025] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An electric single-girder crane that is easy to maintain, characterized by: The invention comprises a base (1), wherein a first column (2) is fixedly mounted on the upper end of the base (1), a second column (3) is movably mounted in the first column (2), a track beam (4) is provided on the upper end of the second column (3), a fixed shaft (5) is fixedly mounted on one end of the track beam (4), a first motor (6) is fixedly mounted on the lower end of the track beam (4), the first motor (6) is electrically connected to an external controller via a cable, a driving wheel (7) is fixedly mounted on the output end of the first motor (6), one end of the track beam (4) is movably mounted on the second column (3) via the fixed shaft (5), and the driving wheel (7) is rollingly mounted on the outside of the second column (3), and an electric hoist (8) is also movably mounted on the lower end of the track beam (4); A fixed pipe seat (9) is fixedly mounted on the upper end of the first upright column (2), and a limiting ring (10) is movably mounted on the upper end of the fixed pipe seat (9).

2. The easily maintainable electric single-girder crane according to claim 1, characterized in that: A second motor (11) is fixedly mounted at the center of the lower end of the first column (2); the second motor (11) is also located inside the base (1), and the second motor (11) is electrically connected to an external controller via a cable.

3. The easily maintainable electric single-girder crane according to claim 2, characterized in that: Four limiting guide rails (12) are fixedly installed on the inner side of the first column (2), and a screw rod (13) is provided at the bottom of the first column (2). The lower end of the screw rod (13) passes through the bearing seat at the bottom of the first column (2) and is fixedly connected to the output end of the second motor (11).

4. The easily maintainable electric single-girder crane according to claim 3, characterized in that: A supporting groove (15) is provided on the outer side of the second column (3), four sliding grooves (16) are provided on the top of the supporting groove (15), and a limiting groove (17) is provided on the top of the supporting groove (15) between two of the sliding grooves (16). A connecting frame (14) is fixedly installed at the lower position of the second column (3), and the lower end of the second column (3) is inserted and installed in the first column (2). The sliding groove (16) is slidably installed on the corresponding limiting guide rail (12), and the center position of the connecting frame (14) is threadedly connected to the screw rod (13).

5. The easily maintainable electric single-girder crane according to claim 4, characterized in that: A fixing ring (18) is fixedly mounted on the upper end of the fixed pipe seat (9).

6. The easily-maintained electric single-girder crane according to claim 4, characterized in that: A rotation groove (19) is provided on the inner side of the limiting ring (10), and four supporting blocks (20) are fixedly installed on the inner side of the limiting ring (10) located above the rotation groove (19). The limiting ring (10) is rotatably installed on the fixed ring (18) through the rotation groove (19), and the supporting blocks (20) are inserted into the sliding groove (16) or the limiting groove (17).

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