High-load high-speed lifting mechanism

Abstract

The utility model discloses a high-load high-speed lifting mechanism, which relates to the field of lifting equipment and comprises a rack perpendicular to the ground, electric ball screws are arranged on two sides of the rack, carrying trays capable of ascending and descending are arranged on the electric ball screws, a storage table capable of carrying workpieces is arranged above the carrying trays, and the storage table is arranged on the rack. The object placing table is of a circular structure, and a positioning plate capable of placing a workpiece is arranged at the center of the object placing table. The two sets of electric ball screws are arranged and can drive the carrying tray to move, workpieces on the positioning plate can be carried to the designated position under the connecting action of the object placing table, the carrying requirements of different heights are met, and the moving speed of the workpieces is increased while the moving precision of the workpieces is guaranteed. And a plurality of limiting columns capable of synchronously moving are further arranged on the object placing table, so that the workpiece can be clamped above the positioning plate, and the phenomena of shaking and deviation generated in the lifting process of the workpiece are effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of hoisting equipment, in particular to a high load high -speed hoisting mechanism. BACKGROUND

[0002] Vacuum box helium leak detection is a high sensitivity leak detection method, widely used in the field requiring high sealing requirements, such as aerospace, semiconductor manufacturing, automobile industry, etc. The method utilizes the characteristics of small helium molecules, strong inertness and easy to pass through small leakage points. In the detection process, helium needs to be injected into the vacuum box, and the concentration of helium is detected by mass spectrometer to determine the leakage position and size. Therefore, vacuum box helium leak detection is a high efficiency, accurate leak detection method, suitable for a variety of high sealing industries. Through reasonable operation and equipment maintenance, the product quality and safety can be significantly improved.

[0003] The existing vacuum box helium detection method is mostly driven by pneumatic drive or using motor driven chain rotation to achieve the carrying function. After moving the workpiece to the specified height, the detection operation is accepted. In the process, the carrying speed is slow, and the workpiece is easy to be affected by the carrying equipment during movement, resulting in shaking and deviation phenomenon. In the process of carrying the workpiece, the accuracy of the position of the workpiece in the plane state is easily affected, and the accurate and rapid carrying effect cannot be achieved. UTILITY MODEL CONTENT

[0004] In view of the above problems, the application provides a high load high speed lifting mechanism.

[0005] In order to achieve the above purpose, the application provides the following technical scheme: a high load high speed lifting mechanism, comprising a rack perpendicular to the ground, the rack is provided with an electric ball screw on both sides, the electric ball screw is provided with a carrying tray capable of ascending and descending on the electric ball screw, a workpiece carrying platform is arranged above the carrying tray, the workpiece carrying platform is in a circular structure, and a positioning plate capable of placing a workpiece is arranged at the center of the workpiece carrying platform, when the carrying tray moves, the workpiece moves synchronously.

[0006] The positioning plate is provided with a plurality of limiting columns equidistantly distributed along the annular track, and the plurality of limiting columns are connected through a driving unit, when the plurality of limiting columns move towards the center of the workpiece carrying platform, the plurality of limiting columns can be attached to the surface of the workpiece on the positioning plate.

[0007] Further, the driving unit comprises a plurality of moving strips respectively arranged at the bottom end of the plurality of limiting columns, one side of the moving strip is provided with a linkage rack, one side of the linkage rack is engaged with a linkage gear one, when a plurality of linkage gears one synchronously rotate, a plurality of moving strips synchronously move.

[0008] Further, the driving unit further comprises a plurality of linkage gears II, which are located directly below the plurality of linkage gears I, and the linkage gears II and the linkage gears I located in the same column are connected through synchronous rotating shafts, and when the linkage gears II rotate, the synchronous rotating shafts rotate synchronously with the linkage gears I.

[0009] The driving gear is coaxially arranged below the placement table, the plurality of linkage gears II are equidistantly arranged along the circumferential track on the outer ring line of the driving gear, and the plurality of linkage gears II are in mesh with the driving gear, and the driving motor is arranged on the driving gear to control the rotation of the driving gear.

[0010] Further, the bottom end of the placement table is provided with a bracket, and the driving gear and the driving motor are respectively arranged at the upper end and the lower end of the bracket.

[0011] Further, a plurality of guide channels are arranged on the placement table, and the plurality of moving strips, the linkage racks and the linkage gears I are located below the placement table, and the synchronous rotating shafts are arranged on the bottom surface of the placement table.

[0012] Further, a plurality of guide roller groups are equidistantly arranged along the circumferential track at the bottom end of the placement table, the moving strips are provided with limiting channels for accommodating the guide roller groups, and when the plurality of moving strips move synchronously, the guide roller groups roll in contact with the inner wall of the limiting channels.

[0013] In conclusion, the technical effects and advantages of the utility model are as follows:

[0014] The utility model is provided with two groups of electric ball screw, which can drive the carrying tray to move, under the connection of the placement table, the workpiece on the positioning plate can be carried to the specified position, and the utility model is suitable for carrying requirements of different heights, the moving precision of the workpiece is ensured, and the moving speed of the workpiece is improved. A plurality of limiting columns which can move synchronously are arranged on the placement table, the workpiece can be clamped above the positioning plate, the shaking and deviation of the workpiece in the lifting process are avoided, the stability of the workpiece is maintained, and the precision of the position of the workpiece in the plane state is improved. BRIEF DESCRIPTION OF DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0016] Figure 1 It is a three-dimensional structure schematic diagram of the utility model.

[0017] Figure 2 It is the second view angle structure schematic view of the utility model.

[0018] Figure 3 It is the carrying tray structure schematic view of the utility model.

[0019] Figure 4 It is the utility model Figure 3 It is the enlarged structure schematic view of A place in the middle.

[0020] Figure 5 It is the carrying tray second view angle structure schematic view of the utility model.

[0021] In the drawing: 1, rack; 2, electric ball screw; 3, carrying tray; 4, object placing table; 41, guide channel; 42, guide roller group; 5, positioning plate; 6, limiting column; 7, moving strip; 71, limiting channel; 8, linkage rack; 9, linkage gear one; 10, linkage gear two; 11, synchronous rotating shaft; 12, driving gear; 13, driving motor; 14, bracket. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0023] Embodiment: refer to Figures 1-3 A high-load high-speed lifting mechanism shown in the drawing, including the rack 1 perpendicular to the ground, the rack 1 both sides are equipped with electric ball screw 2, the electric ball screw 2 are equipped with the carrying tray 3 that can ascend, descend movement, the carrying tray 3 upper is equipped with the object placing table 4 that can carry workpiece, the object placing table 4 is circular structure, and the centre of object placing table 4 is equipped with the positioning plate 5 that can place workpiece.

[0024] In the process of implementing vacuum box helium leak detection operation to workpiece, can control two groups of electric ball screw 2 operation through PLC controller, when two groups of electric ball screw 2 operate, can drive the carrying tray 3 to move, under the connection of object placing table 4, can make the workpiece on the positioning plate 5 synchronous movement, until workpiece is carried to the designated position, in the work environment of workpiece helium leak detection, it is suitable for carrying needs of different height. In the carrying process, the movement precision of workpiece is guaranteed, and the movement speed of workpiece is also improved.

[0025] The positioning plate 5 is externally provided with a plurality of limiting columns 6 distributed equidistantly along the annular track, the plurality of limiting columns 6 are connected through the driving unit, when the plurality of limiting columns 6 move to the limit position towards the center position of the workpiece table 4, the workpiece surface on the positioning plate 5 can be fitted, the workpiece is clamped above the positioning plate 5, effectively avoiding the shaking and deviation of the workpiece in the lifting process, while maintaining the stability of the workpiece, also improving the accuracy of the position of the workpiece in the plane state.

[0026] Specifically, as shown in Figures 3-5 The driving unit includes a plurality of moving strips 7 respectively arranged at the bottom ends of the plurality of limiting columns 6, one side of each moving strip 7 is provided with a linkage gear rack 8, one side of each linkage gear rack 8 is engaged with a linkage gear one 9, when the plurality of linkage gear ones 9 rotate synchronously, the plurality of moving strips 7 move synchronously, so as to drive the plurality of limiting columns 6 to move synchronously, in this process, there is no need to adjust the position of the limiting column 6 one by one, the speed of clamping and positioning operation on the workpiece is improved, and the positioning efficiency of the workpiece is further improved.

[0027] The driving unit further includes a plurality of linkage gear twos 10, the plurality of linkage gear twos 10 are respectively located below the plurality of linkage gear ones 9, the central axes of the linkage gear twos 10 and the linkage gear ones 9 in the same column are connected through a synchronous shaft 11, when the linkage gear twos 10 rotate, the synchronous shaft 11 rotates synchronously with the linkage gear ones 9, so as to drive the plurality of moving strips 7 to move synchronously.

[0028] In order to make the plurality of linkage gear twos 10 rotate synchronously, a driving gear 12 is coaxially arranged below the workpiece table 4, the plurality of linkage gear twos 10 are equidistantly distributed on the outer ring line of the driving gear 12 along the circumferential track, and the plurality of linkage gear twos 10 are engaged with the driving gear 12, the driving gear 12 is provided with a driving motor 13 for controlling the rotation of the driving gear 12. When the driving gear 12 rotates, under the meshing force of the driving gear 12 and the plurality of linkage gear twos 10, the plurality of linkage gear twos 10 can rotate towards the same direction, and then the plurality of linkage gear twos 10 can rotate towards the same direction. Under the connection of the moving strips 7, the plurality of limiting columns 6 can be driven to move towards the workpiece synchronously.

[0029] As shown in Figure 3 In order to maintain the stability of the driving gear 12 and the driving motor 13, the workpiece table 4 is provided with a bracket 14 at the bottom end, and the driving gear 12 and the driving motor 13 are respectively installed at the upper and lower ends of the bracket 14.

[0030] As shown in Figure 4As shown, in order to make the limiting column 6 to move smoothly on the storage platform 4, a plurality of guiding channels 41 capable of accommodating the limiting column 6 to pass through are formed on the storage platform 4, the plurality of moving strips 7, the linkage gear rack 8 and the linkage gear one 9 are located below the storage platform 4, and the synchronous rotating shafts 11 are installed on the bottom surface of the storage platform 4.

[0031] At the same time, the bottom end of the storage platform 4 is provided with a plurality of guiding roller groups 42 distributed equidistantly along the circumferential track, the moving strip 7 is provided with a limiting channel 71 capable of accommodating the guiding roller group 42, and the guiding roller group 42 is in rolling contact with the inner wall of the limiting channel 71 when the plurality of moving strips 7 move synchronously. The cooperation of the limiting channel 71 and the guiding roller group 42 has a limiting effect on the moving strip 7, which can avoid the moving strip 7 from falling. At the same time, the cooperation of the limiting channel 71 and the guiding roller group 42 can also guarantee the linearity of the movement path of the moving strip 7 and the limiting column 6, effectively avoid the shaking and deviation of the two in the moving state, and improve the stability of the two in the moving state.

[0032] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A high load, high speed hoisting mechanism comprising a frame (1) perpendicular to the ground, characterized in that: The rack (1) is provided with electric ball screw (2) on both sides, the electric ball screw (2) is provided with the lifting and lowering motion carrying tray (3), the carrying tray (3) is provided with the workpiece carrying table (4), the carrying table (4) is circular structure, and the center of the carrying table (4) is provided with the positioning plate (5) for placing workpiece, when the carrying tray (3) moves, the workpiece moves synchronously; The positioning plate (5) is provided with a plurality of limit posts (6) equidistantly distributed along the circular track, and the plurality of limit posts (6) are connected through the driving unit, when the plurality of limit posts (6) move towards the center of the carrying table (4), the surface of the workpiece on the positioning plate (5) can be fitted.

2. The high load, high speed lifting mechanism of claim 1, wherein: The driving unit comprises a plurality of moving strips (7) respectively arranged at the bottom end of the plurality of limit posts (6), one side of the moving strip (7) is provided with a linkage rack (8), one side of the linkage rack (8) is engaged with a linkage gear one (9), when the plurality of linkage gears one (9) rotates synchronously, the plurality of moving strips (7) moves synchronously.

3. The high load, high speed lifting mechanism of claim 2, wherein: The driving unit further comprises a plurality of linkage gears two (10), the plurality of linkage gears two (10) are located below the plurality of linkage gears one (9), the central axes of the linkage gears two (10) and the linkage gears one (9) in the same column are connected through the synchronous shaft (11), when the linkage gears two (10) rotates, the synchronous shaft (11) rotates synchronously with the linkage gears one (9); The driving gear (12) is coaxially arranged below the carrying table (4), the plurality of linkage gears two (10) are equidistantly distributed on the outer ring line of the driving gear (12) along the circumferential track, and the plurality of linkage gears two (10) are engaged with the driving gear (12), the driving motor (13) is arranged on the driving gear (12) to control the rotation of the driving gear (12).

4. The high load, high speed lifting mechanism of claim 3, wherein: The carrying table (4) is provided with a bracket (14) at the bottom end, the driving gear (12) and the driving motor (13) are respectively arranged at the upper end and the lower end of the bracket (14).

5. The high load, high speed lifting mechanism of claim 3, wherein: The carrying table (4) is provided with a plurality of guide channels (41) capable of accommodating the limit posts (6) to pass through, the plurality of moving strips (7), the linkage racks (8) and the linkage gears one (9) are located below the carrying table (4), and the synchronous shafts (11) are mounted on the bottom surface of the carrying table (4).

6. The high load, high speed lifting mechanism of claim 3, wherein: The bottom end of the carrying table (4) is provided with a plurality of guide roller groups (42) equidistantly distributed along the circumferential track, the moving strips (7) are provided with limit channels (71) capable of accommodating the guide roller groups (42), when the plurality of moving strips (7) moves synchronously, the guide roller groups (42) are in rolling contact with the inner wall of the limit channels (71).

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