A square tube lifting mechanism

Abstract

The utility model discloses a square tube lifting mechanism, belonging to the field of lifting and raising technology, which includes a driving device and a lifting device, the driving device includes a driving shaft and a driven shaft, and the ends of the driving shaft and the driven shaft are fixedly provided with three-sided driving blocks, the driving shaft and the driven shaft are externally connected with a driving bar, the driving bar includes a plurality of plates and a transmission protrusion fixedly provided on the side wall of the plate, and the transmission protrusion is triangular, and adjacent plates are rotatably connected by a connecting assembly. The utility model has a simple structure, a small volume, a low production cost, will not tip over to one side when in use, and has strong practicality.

Description

Technical Field

[0001] The utility model belongs to the technical field of lifting and raising, and specifically relates to a square tube lifting mechanism. Background Art

[0002] At present, the commonly used lifting mechanisms in the prior art include screw lifting mechanisms, unilateral chain lifting mechanisms, and hydraulic lifting mechanisms. The screw lifting mechanism is large in size, has a long overall volume, has great limitations in use, has high production costs, and is limited in materials during the production process. The unilateral chain lifting mechanism is prone to tipping over on one side, and has poor practicality. Although the hydraulic lifting mechanism has great power, it is large in size and requires the cooperation of a hydraulic pump mechanism when in use. Therefore, a new type of lifting mechanism is needed. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and to provide a square tube lifting mechanism, which solves the problems in the above-mentioned background technology.

[0004] The purpose of the utility model is achieved as follows: a square tube lifting mechanism, which includes a driving device and a lifting device, the driving device includes a driving shaft and a driven shaft, and the ends of the driving shaft and the driven shaft are fixedly provided with three-sided driving blocks, the driving shaft and the driven shaft are connected to the outside with a driving bar, the driving bar includes a plurality of plates and a transmission protrusion fixedly provided on the side wall of the plate, and the transmission protrusion is triangular, and the adjacent plates are connected by a connecting assembly. When in use, the driving shaft is connected with a motor, the driving shaft rotates to drive the three-sided driving blocks to rotate synchronously, the three-sided driving blocks rotate to drive the driving bar to move and rotate around the driving shaft and the driven shaft, the driving bar drives the transmission protrusion to move during the movement, and the transmission protrusion drives the lifting device to rise or fall. The positive rotation of the driving bar drives the lifting device to rise, and the reverse rotation of the driving bar drives the lifting device to fall, so as to achieve the lifting effect. The structure is simple, the volume is small, the production cost is low, and it will not tip over on one side during use, and it is highly practical.

[0005] Furthermore, the lifting device includes a plurality of rectangular tubes, the front side wall of the upper end of the rectangular tube is fixedly provided with a front vertical plate, the rear side wall of the upper end of the rectangular tube is fixedly provided with a rear vertical plate, the plate surfaces of the front vertical plate and the rear vertical plate are both provided with upper through holes, and the front vertical plate and the rear vertical plate are provided correspondingly; the side wall of the rectangular tube is provided with a transmission concave hole, the lower end of the rectangular tube is provided with an arc portion, and the lower end of the rectangular tube is provided with a lower through hole. When in use, the movement of the drive bar drives the movement of the transmission protrusion, and the movement of the transmission protrusion drives the transmission concave hole to move upward or downward, and the cooperation of the transmission protrusion and the transmission concave hole is used to transmit force to the rectangular tube, so as to realize the up and down movement of the rectangular tube.

[0006] Furthermore, the upper through hole is arranged at the right end of the front vertical plate and the rear vertical plate, the lower through hole is arranged at the right lower end of the rectangular tube, and the upper through hole and the lower through hole correspond to each other in the vertical direction. A plurality of the rectangular tubes are vertically connected end to end, and a connecting shaft passes through the upper through hole and the lower through hole between adjacent rectangular tubes, so that the upper rectangular tube is connected to the lower rectangular tube.

[0007] Optionally, the lifting device includes a rectangular tube and a rectangular inner tube arranged inside the rectangular tube; a front vertical plate is fixedly provided on the front side wall of the upper end of the rectangular tube, and a rear vertical plate is fixedly provided on the rear side wall of the upper end of the rectangular tube, upper through holes are provided on the plate surfaces of the front vertical plate and the rear vertical plate, and the front vertical plate and the rear vertical plate are arranged correspondingly; a transmission recess is provided on the side wall of the rectangular tube, an arc portion is provided at the lower end of the rectangular tube, and a lower through hole is provided at the lower end of the rectangular tube.

[0008] Optionally, a blocking shaft is fixedly arranged inside the rectangular inner tube, an inner slot corresponding to the lower through hole is provided at the lower end of the rectangular inner tube, an inner tube hole corresponding to the transmission recessed hole is provided at the side wall of the rectangular inner tube, and an inner extension plate extending toward the inner direction of the rectangular inner tube is fixedly connected to the upper end of the inner tube hole. When in use, the transmission protrusion is inserted into the transmission recessed hole and the inner slot. Since three-sided drive blocks are fixedly arranged outside the driving shaft and the driven shaft, the three-sided drive blocks will generate instantaneous swings during the process of rotating when one surface is transferred to another surface. The instantaneous swing is used to align the transmission recessed hole with the inner slot, so that the rectangular inner tube moves upward, and the rectangular inner tube moves upward and is inserted into the adjacent upper rectangular tube to prevent tipping.

[0009] Optionally, adjacent rectangular tubes are connected by a connecting shaft passing through the upper through hole, the lower through hole and the inner slot, and a torsion spring is fixedly wound around the outside of the connecting shaft, with one end of the torsion spring extending above the blocking shaft.

[0010] Optionally, the connecting assembly includes a male connecting member arranged at the left end of the plate body, and a female connecting member arranged at the right end of the plate body; the male connecting member includes a plurality of recesses and a plurality of lugs opened at the left end of the plate body, and the recesses and the lugs are alternately arranged, and the side walls of the lugs are provided with connecting holes.

[0011] The beneficial effects of the utility model are as follows: by fixing three-sided drive blocks on the outside of the driving shaft and the driven shaft, the three-sided drive blocks will produce a momentary swing when one surface is transferred to another surface during rotation. The momentary swing is used to align the transmission recess with the inner slot, so that the rectangular inner tube moves upward, and the rectangular inner tube moves upward and is inserted into the adjacent upper rectangular tube, so that it does not tip over. When in use, the driving shaft is connected to a motor, and the rotation of the driving shaft drives the three-sided drive blocks to rotate synchronously. The rotation of the three-sided drive blocks drives the drive bar to move and rotate around the driving shaft and the driven shaft. The movement of the drive bar drives the transmission protrusion to move, and the transmission protrusion drives the lifting device to rise or fall. The forward rotation of the drive bar drives the lifting device to rise, and the reverse rotation of the drive bar drives the lifting device to fall, thereby achieving a lifting effect. The utility model has a simple structure, a small size, a low production cost, will not tip over on one side during use, and is highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the cooperation between the rectangular tube and the rectangular inner tube of the utility model;

[0014] Figure 3 It is a schematic diagram of the rectangular tube structure of the utility model;

[0015] Figure 4 It is a schematic diagram of the rectangular inner cylinder structure of the utility model;

[0016] Figure 5 It is a schematic diagram of the structure of the driving device of the utility model;

[0017] Figure 6 The utility model Figure 5 Middle A enlarged view;

[0018] Figure 7 It is a schematic diagram of the connecting shaft structure of the utility model.

[0019] In the figure: 1, driving shaft 2, driven shaft 3, three-sided driving block 4, plate body 5, transmission protrusion 6, rectangular tube 7, front vertical plate 8, rear vertical plate 9, upper through hole 10, transmission concave hole 11, arc portion 12, lower through hole 13, rectangular inner tube 14, blocking shaft 15, inner slot 16, inner extension plate 17, torsion spring 18, notch 19, lug. DETAILED DESCRIPTION

[0020] The following is a further detailed description of the present invention in conjunction with the accompanying drawings. It should be noted that all directional words such as up, down, front, back, left, and right that appear in the present invention are based on Figure 1The directional words are made for reference figures, and all directional words do not limit the utility model, but are only for more clear description and explanation of the utility model. Example

[0021] like Figure 1-7 As shown, this embodiment discloses a square tube lifting mechanism, which includes a driving device and a lifting device, wherein the driving device includes a driving shaft 1 and a driven shaft 2, and the ends of the driving shaft 1 and the driven shaft 2 are fixedly provided with three-sided driving blocks 3, and the driving shaft 1 and the driven shaft 2 are connected to the outside with a driving bar, and the driving bar includes a plurality of plates 4 and a transmission protrusion 5 fixedly provided on the side wall of the plate 4, and the transmission protrusion 5 is triangular, and the adjacent plates 4 are connected by a connecting assembly. When in use, the driving shaft 1 is connected with a motor, and the driving shaft 1 rotates to drive the three-sided driving blocks 3 to rotate synchronously, and the three-sided driving blocks 3 rotate to drive the driving bar to move and rotate around the driving shaft 1 and the driven shaft 2, and the driving bar drives the transmission protrusion 5 to move during the movement, and the transmission protrusion 5 drives the lifting device to rise or fall. The positive rotation of the driving bar drives the lifting device to rise, and the reverse rotation of the driving bar drives the lifting device to fall, thereby realizing the lifting effect. The structure is simple, the volume is small, the production cost is low, and there is no tipping on one side during use, and the practicability is strong.

[0022] In order to achieve better effect, the lifting device includes a plurality of rectangular tubes 6, the front side wall of the upper end of the rectangular tube 6 is fixedly provided with a front vertical plate 7, the rear side wall of the upper end of the rectangular tube 6 is fixedly provided with a rear vertical plate 8, the plate surfaces of the front vertical plate 7 and the rear vertical plate 8 are both provided with upper through holes 9, and the front vertical plate 7 and the rear vertical plate 8 are provided correspondingly; the side wall of the rectangular tube 6 is provided with a transmission concave hole 10, the lower end of the rectangular tube 6 is provided with an arc portion 11, and the lower end of the rectangular tube 6 is provided with a lower through hole 12. When in use, the movement of the driving bar drives the movement of the transmission protrusion 5, and the movement of the transmission protrusion 5 drives the transmission concave hole 18 to move upward or downward, and the cooperation between the transmission protrusion 5 and the transmission concave hole 10 is used to transmit force to the rectangular tube 6, so as to realize the up and down movement of the rectangular tube 6.

[0023] For better effect, the upper through hole 9 is arranged at the right end of the front vertical plate 7 and the rear vertical plate 8, and the lower through hole 12 is arranged at the lower right end of the rectangular tube 6, and the upper through hole 9 and the lower through hole 12 correspond to each other in the vertical direction. Several rectangular tubes 6 are vertically connected end to end, and the upper through hole 9 and the lower through hole 12 are penetrated by a connecting shaft between adjacent rectangular tubes 6, so that the upper rectangular tube 6 is connected with the lower rectangular tube 6. One end of the connecting shaft is fixedly provided with an annular convex part, and the other end of the connecting shaft is provided with an annular concave part. When in use, the connecting shaft is fitted in the track, and the annular convex part and the annular concave part are respectively connected with the two sides of the track in a sliding manner. The track is used to roll up the rectangular tube 6, and the shape of the track is not limited, and it can be an elliptical surrounding structure, or a disc surrounding structure, etc. Example

[0024] like Figure 1-7 As shown, this embodiment discloses a square tube lifting mechanism, which includes a driving device and a lifting device, wherein the driving device includes a driving shaft 1 and a driven shaft 2, and the ends of the driving shaft 1 and the driven shaft 2 are fixedly provided with three-sided driving blocks 3, and the driving shaft 1 and the driven shaft 2 are connected to the outside with a driving bar, and the driving bar includes a plurality of plates 4 and a transmission protrusion 5 fixedly provided on the side wall of the plate 4, and the transmission protrusion 5 is triangular, and the adjacent plates 4 are connected by a connecting assembly. When in use, the driving shaft 1 is connected with a motor, and the driving shaft 1 rotates to drive the three-sided driving blocks 3 to rotate synchronously, and the three-sided driving blocks 3 rotate to drive the driving bar to move and rotate around the driving shaft 1 and the driven shaft 2, and the driving bar drives the transmission protrusion 5 to move during the movement, and the transmission protrusion 5 drives the lifting device to rise or fall. The positive rotation of the driving bar drives the lifting device to rise, and the reverse rotation of the driving bar drives the lifting device to fall, thereby realizing the lifting effect. The structure is simple, the volume is small, the production cost is low, and there is no tipping on one side during use, and the practicability is strong.

[0025] In order to achieve better effects, the lifting device includes a rectangular tube 6 and a rectangular inner tube 13 arranged inside the rectangular tube 6; a front vertical plate 7 is fixedly arranged on the front side wall of the upper end of the rectangular tube 6, and a rear vertical plate 8 is fixedly arranged on the rear side wall of the upper end of the rectangular tube 6. Upper through holes 9 are provided on the plate surfaces of the front vertical plate 7 and the rear vertical plate 8, and the front vertical plate 7 and the rear vertical plate 8 are arranged correspondingly; a transmission recessed hole 10 is provided on the side wall of the rectangular tube 6, an arc portion 11 is provided at the lower end of the rectangular tube 6, and a lower through hole 12 is provided at the lower end of the rectangular tube 6.

[0026] In order to achieve better effect, a blocking shaft 14 is fixedly arranged inside the rectangular inner tube 13, an inner slot 15 corresponding to the lower through hole 12 is provided at the lower end of the rectangular inner tube 13, an inner tube hole corresponding to the transmission recessed hole 10 is provided on the side wall of the rectangular inner tube 13, and an inner extension plate 16 extending toward the inner direction of the rectangular inner tube 13 is fixedly connected to the upper end of the inner tube hole. When in use, the transmission protrusion 5 is inserted into the transmission recessed hole 10 and the inner slot 15. Since the three-sided driving block 3 is fixedly arranged outside the driving shaft 1 and the driven shaft 2, the three-sided driving block 3 will produce a momentary swing when one surface is transferred to another surface during the rotation process, and the momentary swing is used to align the transmission recessed hole 10 with the inner slot 15, so that the rectangular inner tube 13 moves up, and the rectangular inner tube 13 moves up and is inserted into the adjacent upper rectangular tube 6 to prevent tipping.

[0027] For better effect, adjacent rectangular tubes 6 are connected by a connecting shaft passing through the upper through hole 9 , the lower through hole 12 and the inner slot 15 , and a torsion spring 17 is fixedly wound around the outside of the connecting shaft, one end of which extends to the top of the blocking shaft 14 .

[0028] For better effect, the connecting assembly includes a male connecting member arranged at the left end of the plate body 4, and a female connecting member arranged at the right end of the plate body 4; the male connecting member includes a plurality of recesses 18 and a plurality of lugs 19 opened at the left end of the plate body 4, and the recesses 18 and the lugs 19 are alternately arranged, and the side walls of the lugs 19 are provided with connecting holes.

[0029] The above are only preferred specific implementation methods of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solution and concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A square tube lifting mechanism, comprising a driving device and a lifting device, characterized in that: The driving device includes a driving shaft and a driven shaft, and the ends of the driving shaft and the driven shaft are fixedly provided with three-sided driving blocks, the outside of the driving shaft and the driven shaft are connected with a driving bar, and the driving bar includes a plurality of plates and a transmission protrusion fixedly provided on the side wall of the plate body, and the transmission protrusion is triangular in shape, and adjacent plates are rotatably connected by a connecting assembly.

2. The square tube lifting mechanism according to claim 1, characterized in that: The lifting device includes a plurality of rectangular tubes, a front vertical plate is fixedly provided on the front side wall of the upper end of the rectangular tube, a rear vertical plate is fixedly provided on the rear side wall of the upper end of the rectangular tube, upper through holes are provided on the plate surfaces of the front vertical plate and the rear vertical plate, and the front vertical plate and the rear vertical plate are arranged correspondingly; a transmission recess is provided on the side wall of the rectangular tube, an arc portion is provided at the lower end of the rectangular tube, and a lower through hole is provided at the lower end of the rectangular tube.

3. The square tube lifting mechanism according to claim 2, characterized in that: The upper through hole is arranged at the right end of the front vertical plate and the rear vertical plate, and the lower through hole is arranged at the right lower end of the rectangular tube, and the upper through hole and the lower through hole correspond to each other in the up-down direction.

4. The square tube lifting mechanism according to claim 3, characterized in that: A plurality of the rectangular tubes are vertically connected end to end, and a connecting shaft passes through the upper through hole and the lower through hole between adjacent rectangular tubes, so that the upper rectangular tube is connected to the lower rectangular tube.

5. The square tube lifting mechanism according to claim 1, characterized in that: The lifting device includes a rectangular tube and a rectangular inner tube arranged inside the rectangular tube; a front vertical plate is fixedly arranged on the front side wall of the upper end of the rectangular tube, and a rear vertical plate is fixedly arranged on the rear side wall of the upper end of the rectangular tube, upper through holes are opened on the plate surfaces of the front vertical plate and the rear vertical plate, and the front vertical plate and the rear vertical plate are arranged correspondingly; a transmission recessed hole is opened on the side wall of the rectangular tube, an arc portion is arranged at the lower end of the rectangular tube, and a lower through hole is arranged at the lower end of the rectangular tube.

6. The square tube lifting mechanism according to claim 5, characterized in that: A blocking shaft is fixedly arranged inside the rectangular inner cylinder, an inner slot corresponding to the lower through hole is opened at the lower end of the rectangular inner cylinder, an inner cylinder hole corresponding to the transmission recessed hole is opened on the side wall of the rectangular inner cylinder, and an inner extension plate extending toward the inner direction of the rectangular inner cylinder is fixedly connected to the upper end of the inner cylinder hole.

7. The square tube lifting mechanism according to claim 6, characterized in that: The adjacent rectangular tubes are connected by a connecting shaft passing through the upper through hole, the lower through hole and the inner slot. A torsion spring is fixedly wound around the outside of the connecting shaft, and one end of the torsion spring extends above the blocking shaft.

8. The square tube lifting mechanism according to claim 1, characterized in that: The connecting assembly includes a male connecting member arranged at the left end of the plate body, and a female connecting member arranged at the right end of the plate body; the male connecting member includes a plurality of recesses and a plurality of lugs opened at the left end of the plate body, and the recesses and the lugs are alternately arranged, and the side walls of the lugs are provided with connecting holes.

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