Accurate displacement crane

Abstract

The application discloses a crane with accurate displacement, which comprises an I-shaped steel and a first frame body, a driving assembly is installed on the outer side of the first frame body, a first gear driven by the driving assembly is installed on the inner side of the first frame body, rollers are installed on the two sides of the first gear, a second gear meshing with the first gear is installed on the rollers, a guide wheel corresponding to the rollers is installed on the inner wall of the other side of the first frame body, a guide frame is installed on the first frame body, a second frame body is slidingly installed above the first frame body, an electric push rod driving the second frame body to lift is installed on the top end of the guide frame, a walking wheel column is rotatably installed on the second frame body, a speed reduction gear is installed on the walking wheel column, an axle seat is slidingly installed on the bottom of the second frame body, and a connecting gear corresponding to the speed reduction gear is installed on the axle seat through a rotating column. When the connecting gear moves downward, rigid collision can be avoided.

Description

Technical Field

[0001] This invention relates to the field of crane technology, specifically a crane capable of precise displacement. Background Technology

[0002] When using a small-tonnage crane, the workpiece needs to be hoisted by the hook on the I-beam swing arm, and then moved by the electric hoist on the I-beam swing arm so that the workpiece can be positioned as needed.

[0003] During hoisting, for some workpieces requiring precise displacement, electric hoists are needed for horizontal movement and precise adjustment, such as when installing small molds on a mold base. When installing small molds, their position needs to be aligned very precisely. Furthermore, the position cannot be adjusted by workers pulling horizontally when the mold is placed on the mold base because the mold is too heavy for workers to pull. Manually pulling the cable is also too dangerous, as pulling the cable would tilt the mold's center of gravity instead of keeping it vertical.

[0004] However, not all cranes require high-precision displacement. For example, when stacking bagged goods or moving workpieces, the required displacement precision is lower and the weight is not heavy. In such cases, existing small-tonnage cranes can be used.

[0005] In existing technologies, electric hoists on cranes are generally equipped with only one type of drive motor for movement, and the motor (three-phase asynchronous motor) is not very precise (because high-precision movement leads to easy damage), thus enabling it to adapt to harsh working environments. However, when this motor is in use, each press of the forward button causes the electric hoist to move suddenly with force, meaning the movement distance is relatively long. For precise position adjustments, manual traction assistance is still required, which is quite dangerous. Summary of the Invention

[0006] The purpose of this invention is to provide a crane capable of precise displacement, thereby solving the problems in the prior art.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a crane capable of precise displacement, comprising an I-beam and a first frame, wherein a drive assembly is installed on the outer side of the first frame, a first gear driven by the drive assembly is installed on the inner side of the first frame, rollers are installed on both sides of the first gear on the first frame, a second gear meshing with the first gear is installed on the rollers, and a guide wheel corresponding to the roller is installed on the inner wall of the other side of the first frame.

[0008] The first frame is equipped with a guide frame, and a second frame is slidably mounted on the guide frame above the first frame. An electric push rod that drives the second frame to lift and lower is installed at the top of the guide frame.

[0009] The second frame is rotatably mounted with a travel wheel column, and the travel wheel column is equipped with a reduction gear;

[0010] The second frame has a slidably mounted bearing at the bottom. The bearing is mounted with a connecting gear corresponding to the reduction gear via a rotating column, and the connecting gear corresponds to the second gear.

[0011] Preferably, the first frame has a groove corresponding to the bearing seat.

[0012] Preferably, after the first frame is lowered, the connecting gear meshes with the corresponding second gear and reduction gear respectively.

[0013] Preferably, the diameter of the reduction gear is larger than the diameter of the travel wheel column.

[0014] Preferably, it also includes a column, the I-beam is rotatably mounted on the column, a gear disk is mounted on the top of the column, a drive motor is mounted on one end of the I-beam, and the drive motor drives a gear that cooperates with the gear disk.

[0015] Preferably, it also includes a base, the column is mounted on the base, and a fuma wheel is installed at the bottom end of the base.

[0016] Preferably, each of the four corners of the base is rotatably mounted with an extension frame, and the end of the extension frame away from the base is adjustablely mounted with a support leg.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. It can solve the problem of precise position adjustment based on a single drive component; when the connecting gear moves downward, it can avoid rigid collision and ensure misalignment meshing.

[0019] 2. After speed adjustment, it can move through the travel wheel column. Moving through the travel wheel column results in a larger contact area, which means greater friction and more stable movement of the entire electric hoist.

[0020] 3. The connecting gear is rotatably mounted on the bearing seat via a rotating column. The bearing seat is slidably connected to the second frame. When the connecting gear contacts the second gear, the connecting gear can slide, so that in the event of a collision, the connecting gear can slide up and down to avoid rigid collision and ensure that the two can mesh. After meshing, the bearing seat will be just inserted into the groove of the first frame. Attached Figure Description

[0021] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0022] Figure 1 This is a schematic diagram of the structure of the present invention;

[0023] Figure 2 This is a structural schematic diagram of the first frame of the present invention;

[0024] Figure 3 This is a structural schematic diagram of the first and second frames of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the second gear and the connecting gear in this invention;

[0026] Figure 5 This is a schematic diagram of the structure of the bearing seat of the present invention.

[0027] In the diagram: 1. I-beam; 2. Drive assembly; 3. First gear; 4. Roller; 5. Second gear; 6. Connecting gear; 7. Traveling wheel column; 8. Electric push rod; 9. First frame; 91. Groove; 10. Second frame; 11. Reduction gear; 12. Shaft seat; 13. Guide frame; 14. Column; 15. Gear disk; 16. Drive motor; 17. Base; 18. Fouma wheel; 19. Extension frame; 20. Support leg. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention.

[0029] Please see Figure 1-5In this embodiment of the invention, a crane capable of precise displacement includes an I-beam 1 and a first frame 9. A drive assembly 2 is mounted on the outer side of the first frame 9, and a first gear 3 driven by the drive assembly 2 is mounted on the inner side of the first frame 9. Rollers 4 are mounted on both sides of the first gear 3 on the first frame 9, and second gears 5 that mesh with the first gear 3 are mounted on the rollers 4. Guide wheels corresponding to the rollers 4 are mounted on the inner wall of the other side of the first frame 9. A guide frame 13 is mounted on the first frame 9, and a second frame is slidably mounted on the guide frame 13 above the first frame 9. 10. The lifting of the second frame 10 is achieved through the connection of the guide frame 13, which also guides the vertical movement of the second frame 10. An electric push rod 8 for driving the lifting and lowering of the second frame 10 is installed at the top of the guide frame 13. The second frame 10 is rotatably mounted with a traveling wheel column 7, and a reduction gear 11 is installed on the traveling wheel column 7. A bearing seat 12 is slidably mounted at the bottom of the second frame 10. The bearing seat 12 is mounted with a connecting gear 6 corresponding to the reduction gear 11 through a rotating column, and the connecting gear 6 corresponds to the second gear 5.

[0030] The first frame 9 has a groove 91 corresponding to the bearing 12; after the first frame 9 is lowered, the connecting gear 6 meshes with the corresponding second gear 5 and reduction gear 11 respectively; the diameter of the reduction gear 11 is larger than the diameter of the traveling wheel column 7.

[0031] like Figure 1 It also includes a column 14, on which the I-beam 1 is rotatably mounted. A gear disk 15 is mounted on the top of the column 14, and a drive motor 16 is mounted on one end of the I-beam 1. The drive motor 16 drives a gear that meshes with the gear disk 15, and the drive motor 16 can drive the I-beam 1 to rotate relative to the column 14. It also includes a base 17, on which the column 14 is mounted. A fender 18 is mounted on the bottom of the base 17. Extension frames 19 are rotatably mounted on each of the four corners of the base 17. Support legs 20 are adjustablely mounted on the end of the extension frame 19 away from the base 17. Opening the extension frame 19 can improve the stability of the equipment.

[0032] When no deceleration is required, the workpiece is lifted by a crane. During lifting, the electric hoist can move on the I-beam 1, driven by the drive assembly 2. The drive assembly 2 drives the first gear 3 to rotate, which in turn drives the second gear 5 on the rollers 4 on both sides to rotate, thus moving the rollers 4. Figure 3 As can be seen, the second gear 5 and the connecting gear 6 are separated at this time, and the traveling wheel column 7 is separated from the top of the I-beam 1.

[0033] When deceleration is required, the output end of the top electric push rod 8 extends downward, causing the traveling wheel column 7 to first contact the top of the I-beam 1. Then, the output end of the electric push rod 8 continues to extend downward, using the traveling wheel column 7 as a support point to lift the first frame 9 upward. This engages the second gear 5 with the connecting gear 6, while the roller 4 remains disengaged from the I-beam 1, preventing friction between them during the movement of the traveling wheel column 7. Conversely, when the traveling wheel column 7 descends, the connecting gear 6 descends along with it via the second frame 10.

[0034] After the connecting gear 6 meshes with the second gear 5, the drive assembly 2 drives the connecting gear 6 to rotate the traveling wheel column 7 via the reduction gear 11, thus enabling it to travel on the I-beam 1. The principle of speed reduction is as follows: the diameter of the reduction gear 11 is larger than that of the traveling wheel column 7, specifically three times the diameter of the traveling wheel column 7. This reduces the distance traveled in one revolution by two-thirds when the speed reduction gear 11 transmits power to the traveling wheel column 7.

[0035] If the second gear 5 cannot be misaligned when it engages with the connecting gear 6, a rigid collision will occur. To solve this problem, such as... Figure 5 As shown, the connecting gear 6 is rotatably mounted on the bearing seat 12 via a rotating column. The bearing seat 12 is slidably connected to the second frame 10. When the connecting gear 6 contacts the second gear 5, the connecting gear 6 can slide, allowing it to slide up and down in the event of a collision, preventing rigid impact and ensuring meshing between the two. After meshing, the bearing seat 12 will fit perfectly into the groove 91 of the first frame 9, as shown in the diagram. Figure 5 As shown.

[0036] like Figure 3 As shown, the lifting of the first frame 9 is achieved through the connection of the guide frame 13, which enables it to move upward. The guide frame 13 also serves to guide the vertical movement of the first frame 9.

[0037] Finally, it should be noted that the above descriptions are merely preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A crane capable of precise displacement, comprising an I-beam (1) and a first frame (9), characterized in that: A drive assembly (2) is installed on the outside of the first frame (9), and a first gear (3) driven by the drive assembly (2) is installed on the inside of the first frame (9). Rollers (4) are installed on both sides of the first gear (3) on the first frame (9). A second gear (5) that meshes with the first gear (3) is installed on the roller (4). A guide wheel corresponding to the roller (4) is installed on the inner wall of the other side of the first frame (9). The first frame (9) is equipped with a guide frame (13), and the guide frame (13) is slidably mounted on the second frame (10) above the first frame (9). The top of the guide frame (13) is equipped with an electric push rod (8) that drives the second frame (10) to rise and fall. The second frame (10) is rotatably mounted with a walking wheel column (7), and the walking wheel column (7) is mounted with a reduction gear (11). The second frame (10) has a slidably mounted bearing (12) at the bottom. The bearing (12) has a connecting gear (6) corresponding to the reduction gear (11) mounted on it via a rotating column. The connecting gear (6) corresponds to the second gear (5). After the first frame (9) descends, the connecting gear (6) meshes with the corresponding second gear (5) and reduction gear (11); When no deceleration is required, the electric hoist moves on the I-beam (1) by being driven by the drive assembly (2); the drive assembly (2) drives the first gear (3) to rotate, so that the gear can drive the second gear (5) on the rollers (4) on both sides to rotate, and drive the rollers (4) to move. At this time, the second gear (5) and the connecting gear (6) are separated, and the traveling wheel column (7) is separated from the top of the I-beam (1). When deceleration is required, the output end of the electric push rod (8) at the top extends downward, so that the walking wheel column (7) first contacts the top of the I-beam (1). Then the output end of the electric push rod (8) continues to extend downward, driving the second gear (5) to mesh with the connecting gear (6), and the roller (4) and the I-beam (1) are in a separated state.

2. The crane capable of precise displacement according to claim 1, characterized in that: The first frame (9) has a groove (91) corresponding to the bearing seat (12).

3. The crane capable of precise displacement according to claim 1, characterized in that: The diameter of the reduction gear (11) is larger than the diameter of the travel wheel column (7).

4. A crane capable of precise displacement according to claim 1, characterized in that: It also includes a column (14), the I-beam (1) is rotatably mounted on the column (14), a gear disk (15) is mounted on the top of the column (14), a drive motor (16) is mounted on one end of the I-beam (1), and the drive motor (16) drives a gear that cooperates with the gear disk (15).

5. A crane capable of precise displacement according to claim 4, characterized in that: It also includes a base (17), the column (14) is mounted on the base (17), and a fuma wheel (18) is mounted on the bottom end of the base (17).

6. A crane capable of precise displacement according to claim 5, characterized in that: The base (17) has extension brackets (19) rotatably mounted at each of its four corners, and the extension brackets (19) have adjustable support legs (20) mounted at the end away from the base (17).

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