Liftable portal frame of numerical control gantry machining center

Abstract

The utility model discloses a liftable portal frame of a numerical control gantry machining center, which comprises a pair of portal frame supporting columns, sliding openings are formed in the portal frame supporting columns, a portal frame cross beam is arranged between the pair of portal frame supporting columns, and two ends of the portal frame cross beam respectively penetrate through the pair of sliding openings in a sliding manner; first hydraulic cylinders are arranged on the end faces, away from each other, of the pair of portal frame supporting columns, and the telescopic ends of the first hydraulic cylinders are fixedly connected with the lower end face of the portal frame cross beam. A locking mechanism used for locking the portal frame cross beam is arranged in the sliding opening, under the action of the pair of first hydraulic cylinders, the portal frame cross beam can be driven to ascend or descend, the height of the portal frame cross beam can be adjusted, and meanwhile under the action of the locking mechanism, the position of the portal frame cross beam can be locked. The working load of the first hydraulic cylinder can be reduced, the first hydraulic cylinder is prevented from being damaged to affect the use of equipment, and convenience is brought to people.

Description

Technical Field

[0001] This utility model relates to the technical field of gantry machining equipment, specifically a liftable gantry frame for a CNC gantry machining center. Background Technology

[0002] Digitally controlled machine tools are automated machine tools controlled by programs. The control system logic processes programs defined by control codes or other symbolic instructions, which are decoded by a computer to enable the machine tool to perform prescribed actions, processing raw materials into semi-finished products, finished products, or parts using cutting tools.

[0003] Conventional gantry cranes are fixed in shape and mainly rely on the processing equipment to lift and lower on the gantry crane to match the target product. Therefore, the lifting range is limited, resulting in a relatively low matching degree of the thickness of the target product. To address this issue, we propose a liftable gantry crane for CNC gantry machining centers. Utility Model Content

[0004] To solve the above problems, namely the problems mentioned in the background art, this utility model proposes a liftable gantry frame for a CNC gantry machining center, including a pair of gantry frame support columns, with sliding openings formed inside the gantry frame support columns, and a gantry frame crossbeam provided between the pair of gantry frame support columns, with both ends of the gantry frame crossbeam slidingly passing through the pair of sliding openings respectively.

[0005] Each of the two gantry support columns is provided with a first hydraulic cylinder at the far ends, and the telescopic end of the first hydraulic cylinder is fixedly connected to the lower end face of the gantry beam.

[0006] The sliding opening is provided with a locking mechanism for locking the gantry beam;

[0007] The locking mechanism includes a pair of racks fixedly installed on the inner wall of the slide;

[0008] A pair of openings are formed inside the crossbeam of the gantry frame. A pair of rotating shafts are rotatably installed inside the openings. Gears are fixedly installed on the outer surface of the rotating shafts. The pair of gears mesh with each other and are respectively meshed with the pair of racks.

[0009] A pair of rotating disks are provided on each side of the gantry beam, and the rotating disks are fixedly connected to one end of the rotating shaft;

[0010] Triangular prisms are slidably mounted on both ends of the gantry beam, and the two ends of the triangular prisms are in contact with the circumferential surfaces of a pair of rotating disks, respectively.

[0011] Preferably, the locking mechanism further includes a pair of fixing plates, both of which are fixedly installed on the upper end face of the gantry beam. A second hydraulic cylinder is fixedly installed on one end face of the fixing plate, and the telescopic end of the second hydraulic cylinder is fixedly connected to one end face of the triangular prism.

[0012] Preferably, two pairs of sliding grooves are formed on the outer surface of the gantry beam, and a slider that is slidably connected to the sliding groove is fixedly installed on one end face of the triangular prism near the gantry beam.

[0013] Preferably, a first anti-slip texture is formed on the circumferential surface of the rotating disk, and a second anti-slip texture is formed on the end face of the triangular prism that contacts the circumferential surface of the rotating disk.

[0014] The beneficial technical effects of this utility model are as follows: under the action of a pair of first hydraulic cylinders, the gantry beam can be driven to rise or fall, the height of the gantry beam can be adjusted, and under the action of the locking mechanism, the position of the gantry beam can be locked, which can reduce the working load of the first hydraulic cylinders, prevent them from being damaged, and affect the use of the equipment, thus bringing convenience to people. Attached Figure Description

[0015] Figure 1 A schematic diagram of the front view structure of this utility model is shown.

[0016] Figure 2 A side view of the present invention is shown.

[0017] Figure 3 A side sectional view of the present invention is shown.

[0018] Figure 4 This utility model is shown Figure 2 A magnified structural diagram of part A.

[0019] Figure 5 This utility model is shown Figure 1 A magnified structural diagram of part B.

[0020] The attached diagram includes the following reference numerals: 1. Gantry support column; 2. Slide opening; 3. Gantry beam; 4. First hydraulic cylinder; 5. Rack; 6. Through opening; 7. Rotating shaft; 8. Gear; 9. Rotating disk; 10. Triangular prism; 11. Fixed plate; 12. Second hydraulic cylinder; 13. Slide groove; 14. Slider. Detailed Implementation

[0021] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are merely illustrative of the technical principles of the present invention and are not intended to limit the scope of protection of the present invention.

[0022] This utility model proposes a liftable gantry frame for a CNC gantry machining center, including a pair of gantry frame support columns 1, with a sliding opening 2 formed inside the gantry frame support columns 1, and a gantry frame crossbeam 3 provided between the pair of gantry frame support columns 1, with both ends of the gantry frame crossbeam 3 slidingly passing through the pair of sliding openings 2 respectively.

[0023] A first hydraulic cylinder 4 is provided on the far ends of a pair of gantry support columns 1. The telescopic ends of the first hydraulic cylinder 4 are fixedly connected to the lower end face of the gantry beam 3.

[0024] The first hydraulic cylinder 4 is fixedly installed on one end face of the gantry support column 1 and can be fixed relative to it. At the same time, the telescopic ends of a pair of first hydraulic cylinders 4 extend or retract simultaneously, which can drive the two ends of the gantry beam 3 to slide in a pair of sliding ports 2 respectively, and the height of the gantry beam 3 can be adjusted.

[0025] The sliding opening 2 is equipped with a locking mechanism for locking the gantry beam 3;

[0026] The locking mechanism includes a pair of racks 5 fixedly installed on the inner wall of the slide 2;

[0027] A pair of openings 6 are formed inside the crossbeam 3 of the gantry frame. A pair of rotating shafts 7 are rotatably installed inside the openings 6. Gears 8 are fixedly installed on the outer surface of the rotating shafts 7. The pair of gears 8 mesh with each other and are respectively meshed with a pair of racks 5.

[0028] When the gantry beam 3 rises or falls, it can drive two pairs of gears 8 and two pairs of rotating shafts 7 to rotate respectively. The rotation of the two pairs of gears 8 can mesh with the two pairs of racks 5 respectively, which can make the gantry beam 3 more stable when rising or falling.

[0029] A pair of rotating disks 9 are provided on both sides of the gantry beam 3, and the rotating disks 9 are fixedly connected to one end of the rotating shaft 7;

[0030] The rotation of the two pairs of rotating shafts 7 can drive the two pairs of rotating disks 9 to rotate simultaneously.

[0031] Triangular prisms 10 are slidably installed on both ends of the gantry beam 3, and the two ends of the triangular prisms 10 are in contact with the circumferential surfaces of a pair of rotating disks 9 respectively.

[0032] Under the action of the triangular prism 10, its two end faces can press against the circumferential surfaces of a pair of rotating disks 9 respectively, which can lock the rotation position of the rotating disks 9 and prevent them from rotating.

[0033] Specifically, the locking mechanism also includes a pair of fixing plates 11, both of which are fixedly installed on the upper end face of the gantry beam 3. A second hydraulic cylinder 12 is fixedly installed on one end face of the fixing plate 11, and the telescopic end of the second hydraulic cylinder 12 is fixedly connected to one end face of the triangular prism 10.

[0034] The extension or retraction of the second hydraulic cylinder 12 can drive the triangular prism 10 to slide. When extended, the two end faces of the triangular prism 10 can contact the circumferential surfaces of a pair of rotating disks 9. When retracted, the triangular prism 10 can move away from the pair of rotating disks 9.

[0035] Specifically, two pairs of sliding grooves 13 are formed on the outer surface of the gantry beam 3, and a slider 14 that is slidably connected to the sliding grooves 13 is fixedly installed on one end face of the triangular prism 10 near the gantry beam 3.

[0036] The sliding groove 13 and the slider 14 make the triangular prism 10 more stable when sliding.

[0037] Specifically, a first anti-slip pattern is formed on the circumferential surface of the rotating disk 9, and a second anti-slip pattern is formed on the end face of the triangular prism 10 that contacts the circumferential surface of the rotating disk 9.

[0038] The first and second anti-slip textures increase the friction between the triangular prism 10 and the rotating disk 9, allowing the triangular prism 10 to better lock the rotation position of the pair of rotating disks 9.

[0039] Working principle: In use, firstly, a pair of first hydraulic cylinders 4 are activated. The extension or retraction of the first hydraulic cylinders 4 can drive the two ends of the gantry beam 3 to slide in a pair of sliding ports 2, thereby adjusting the height of the gantry beam 3. At the same time, when the gantry beam 3 rises or falls, it can drive two pairs of gears 8 and two pairs of rotating shafts 7 to rotate. The rotation of the two pairs of gears 8 can mesh with two pairs of racks 5, making the rise or fall of the gantry beam 3 more stable. When the gantry beam 3 moves to the predetermined position, the pair of first hydraulic cylinders 4 are closed, and at the same time, a pair of second hydraulic cylinders 12 are activated. The extension of the extension end of the pair of second hydraulic cylinders 12 can drive a pair of triangular prisms 10 to slide. At this time, the two end faces of the triangular prisms 10 contact the circumferential surfaces of a pair of rotating disks 9, locking the rotation position of the pair of rotating disks 9 and preventing them from rotating. This completes the locking of the position of the gantry beam 3, which can reduce the workload of the first hydraulic cylinders 4, prevent their damage, and bring convenience to people.

[0040] Although the present invention has been described with reference to preferred embodiments, various modifications can be made to it and components can be replaced with equivalents without departing from the scope of the present invention. In particular, the technical features mentioned in the various embodiments can be combined in any manner as long as there is no structural conflict. The present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

[0041] In the description of this utility model, terms such as "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," which indicate direction or positional relationships, are based on the direction or positional relationships shown in the accompanying drawings. These are used merely for ease of description and do not indicate or imply that the device or element must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0042] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0043] The term "comprising" or any other similar term is intended to cover non-exclusive inclusion, such that a process, article, or apparatus / device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to those processes, articles, or apparatus / devices.

[0044] The technical solution of this utility model has been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the protection scope of this utility model is obviously not limited to these specific embodiments. Without departing from the principle of this utility model, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the protection scope of this utility model.

Claims

1. A lifting gantry frame for a CNC gantry machining center, characterized in that, It includes a pair of gantry support columns (1), with a sliding opening (2) formed inside the gantry support column (1), and a gantry beam (3) between the pair of gantry support columns (1), with both ends of the gantry beam (3) sliding through the pair of sliding openings (2); Each of the two gantry support columns (1) is provided with a first hydraulic cylinder (4) on its far-away end face. The telescopic end of the first hydraulic cylinder (4) is fixedly connected to the lower end face of the gantry beam (3). The sliding opening (2) is provided with a locking mechanism for locking the gantry beam (3); The locking mechanism includes a pair of racks (5) fixedly installed on the inner wall of the slide (2); A pair of openings (6) are formed in the crossbeam (3) of the gantry frame. A pair of rotating shafts (7) are rotatably installed in the openings (6). Gears (8) are fixedly installed on the outer surface of the rotating shafts (7). The pair of gears (8) mesh with each other and are respectively meshed with a pair of racks (5). A pair of rotating disks (9) are provided on both sides of the gantry beam (3), and the rotating disks (9) are fixedly connected to one end of the rotating shaft (7); Triangular prisms (10) are slidably installed on both ends of the gantry beam (3), and the two ends of the triangular prisms (10) are in contact with the circumferential surfaces of a pair of rotating disks (9).

2. The lifting gantry frame of a CNC gantry machining center according to claim 1, characterized in that, The locking mechanism also includes a pair of fixing plates (11), both of which are fixedly installed on the upper end face of the gantry beam (3). A second hydraulic cylinder (12) is fixedly installed on one end face of the fixing plate (11), and the telescopic end of the second hydraulic cylinder (12) is fixedly connected to one end face of the triangular prism (10).

3. The lifting gantry frame of a CNC gantry machining center according to claim 2, characterized in that, Two pairs of sliding grooves (13) are formed on the outer surface of the gantry beam (3), and a slider (14) that is slidably connected to the sliding groove (13) is fixedly installed on one end face of the triangular prism (10) near the gantry beam (3).

4. The lifting gantry frame of a CNC gantry machining center according to claim 1, characterized in that, A first anti-slip pattern is formed on the circumferential surface of the rotating disk (9), and a second anti-slip pattern is formed on the end face of the triangular prism (10) that is in contact with the circumferential surface of the rotating disk (9).

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