Multistage rigid telescopic mechanism

Abstract

The utility model discloses a multi-stage rigid telescopic mechanism which comprises a first telescopic arm, a telescopic groove is formed outside the first telescopic arm, a transmission shell is fixedly connected to one side of the telescopic groove, a transmission mechanism is arranged in the transmission shell, a seventh gear and a connecting shaft are arranged on one side of the transmission mechanism, and second racks are arranged on the lower portion of the seventh gear and the lower portion of the connecting shaft. The two sides of the second rack are fixedly connected with an adjusting mechanism, the adjusting mechanism comprises an adjusting shell fixedly connected to the interior of the first telescopic arm, and a second motor is arranged on the upper portion of the adjusting shell. A sixth gear and a seventh gear rotate to drive a first telescopic arm to move, in the moving process of the first telescopic arm, a second rack can be driven to move upwards by starting an adjusting mechanism, and the moving precision of the first telescopic arm can be adjusted by controlling the second rack to be connected with the sixth gear or the seventh gear.

Description

TECHNICAL FIELD

[0001] The utility model relates to retractable equipment technical field especially relates to a multistage rigid telescopic mechanism. BACKGROUND

[0002] The multistage rigid telescopic mechanism is an important mechanism widely demanded in industrial technology and engineering applications, in the field of industrial robots, in order to realize the operation demand of large stroke, large load, multistage telescopic mechanism is often needed, the traditional multistage telescopic mechanism mainly adopts cylinder, oil cylinder or motor drive, but due to the cylinder and oil cylinder accessory, self weight is big, and the sealing requirement is high, the use of motor gradually becomes more and more widely, at the same time, in order to facilitate the rotation output of motor to be changed into linear motion, the screw nut mechanism is also used in large quantities, however, the existing multistage telescopic mechanism still has deficiencies in precision and rigidity, especially in the large stroke application, its rigidity and stability are often difficult to meet the requirements, therefore, the research and development and application of multistage rigid telescopic mechanism are particularly important to meet the growing industrial demand.

[0003] The speed and movement precision of the telescopic mechanism during telescopic adjustment are fixed in the actual use process of the existing device, which is difficult to adjust according to different use environments, and the use effect is poor, therefore, a multistage rigid telescopic mechanism is provided. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings that the speed and movement precision of the telescopic mechanism during telescopic adjustment are fixed in the prior art, which is difficult to adjust according to different use environments, and the use effect is poor, and proposes a multistage rigid telescopic mechanism.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A multistage rigid telescopic mechanism, comprising a first telescopic arm, the first telescopic arm is externally provided with a telescopic groove, one side of the telescopic groove is fixedly connected with a transmission housing, the transmission housing is internally provided with a transmission mechanism, one side of the transmission mechanism is provided with a seventh gear and a connecting shaft, the seventh gear and the connecting shaft are provided with a second rack at the lower part, the second rack is fixedly connected with an adjusting mechanism on both sides, the adjusting mechanism comprises an adjusting housing fixedly connected in the first telescopic arm, the adjusting housing is provided with a second motor at the upper part, the second motor is provided with a threaded rod at the output end, the threaded rod is threadedly connected with a transmission block, and the transmission block is fixedly connected with the second rack.

[0007] The transmission mechanism drives the sixth gear and the seventh gear to rotate, the sixth gear and the seventh gear rotate to drive the meshing connected second rack to move, the first telescopic arm is driven to move through the second rack movement, when the first telescopic arm moves, the second motor is started to drive the threaded rod to rotate, the threaded rod drives the threaded connection transmission block to move, and the transmission block drives the second rack to move up, the speed and the precision of the first telescopic arm are changed by controlling the second rack to be connected with one of the sixth gear and the seventh gear, and the diameter of the sixth gear is greater than that of the seventh gear.

[0008] The technical scheme further comprises:

[0009] The first telescopic arm is externally slidably connected with a second telescopic arm, and the second telescopic arm is externally slidably connected with a telescopic groove.

[0010] The threaded rod is rotationally connected with the adjusting shell, and the adjusting shell is internally slidably connected with a transmission block.

[0011] The transmission mechanism comprises a first motor arranged in a transmission shell, and a transmission assembly is arranged at an output end of the first motor.

[0012] The transmission assembly comprises a fourth gear arranged at the output end of the first motor, a fifth gear is meshingly connected with the fourth gear, and the fifth gear is rotationally connected with the transmission shell.

[0013] The fifth gear is fixedly connected with a connecting shaft on the side, away from the fourth gear, of the fifth gear, and the connecting shaft is fixedly connected with a sixth gear and a first telescopic arm at the upper portion of the connecting shaft.

[0014] The telescopic groove is internally fixedly connected with a first rack, and the first rack is meshingly connected with a first gear at the upper portion of the first rack.

[0015] The first gear is fixedly connected with a second gear on the side, away from the telescopic groove, of the first gear, and the second gear is rotationally connected with the first telescopic arm.

[0016] The second gear is drivingly connected with a transmission belt, the transmission belt is drivingly connected with a third gear on the side, away from the second gear, of the transmission belt, and the third gear is rotationally connected with the first telescopic arm.

[0017] The transmission belt is fixedly connected with a transmission piece at the upper portion of the transmission belt, and the transmission piece is fixedly connected with a second telescopic arm at the upper portion of the transmission piece.

[0018] The utility model has the following beneficial effects:

[0019] 1. The utility model discloses a transmission mechanism can drive the sixth gear and seventh gear rotate, and the sixth gear and seventh gear rotation can drive the first telescopic arm move, and in the first telescopic arm moving process, through the starting adjusting mechanism can drive the second rack moves upwards, and the control second rack and sixth gear or seventh gear connection can adjust the movement precision of first telescopic arm, control second rack and seventh gear connection, the distance reduction of first telescopic arm each time moves, improve telescopic precision, and control second rack and sixth gear connection, improve the distance of first telescopic arm each time moves, improve telescopic speed.

[0020] 2. The utility model discloses a first telescopic arm moves simultaneously first gear can rotate along second gear synchronously, and first gear rotation can drive second gear rotate, and second gear rotation can drive the transmission belt drive, through the drive of transmission belt can drive second telescopic arm also move, thereby realize multistage telescopic. DRAWINGS

[0021] Fig. 1 It is the overall structure schematic drawing of multistage rigid telescopic mechanism for the utility model proposes,

[0022] Fig. 2 It is the device overall structure schematic drawing in the utility model,

[0023] Fig. 3 It is the telescopic slot internal structure schematic drawing in the utility model,

[0024] Fig. 4 It is the second telescopic arm internal structure schematic drawing in the utility model,

[0025] Fig. 5 It is the adjusting mechanism structure schematic drawing in the utility model,

[0026] Fig. 6 It is the adjusting casing internal structure schematic drawing in the utility model.

[0027] In the drawing: 1, first telescopic arm, 2, second telescopic arm, 3, telescopic slot, 4, transmission casing, 5, first rack, 6, first gear, 7, second gear, 8, transmission belt, 9, transmission part, 10, third gear, 11, first motor, 12, fourth gear, 13, fifth gear, 14, sixth gear, 15, seventh gear, 16, connecting shaft, 17, second rack, 18, adjusting casing, 19, second motor, 20, threaded rod, 21, transmission block. DETAILED DESCRIPTION

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1

[0030] like Figs. 1-6 As shown, the present invention proposes a multi-stage rigid telescopic mechanism, including a first telescopic arm 1, an external telescopic groove 3, a transmission housing 4 fixedly connected to one side of the telescopic groove 3, a transmission mechanism inside the transmission housing 4, a seventh gear 15 and a connecting shaft 16 on one side of the transmission mechanism, a second rack 17 below the seventh gear 15 and the connecting shaft 16, and an adjustment mechanism fixedly connected to both sides of the second rack 17. The adjustment mechanism includes an adjustment housing 18 fixedly connected inside the first telescopic arm 1, a second motor 19 on the upper part of the adjustment housing 18, a threaded rod 20 at the output end of the second motor 19, a transmission block 21 threadedly connected to the threaded rod 20, and the transmission block 21 fixedly connected to the second rack 17.

[0031] The transmission mechanism drives the sixth gear 14 and the seventh gear 15 to rotate. The rotation of the sixth gear 14 and the seventh gear 15 drives the meshing second rack 17 to move. The movement of the second rack 17 drives the first telescopic arm 1 to move. When the first telescopic arm 1 moves, the second motor 19 is started to drive the threaded rod 20 to rotate. The rotation of the threaded rod 20 drives the threaded transmission block 21 to move. The movement of the transmission block 21 drives the second rack 17 to move upward. By controlling the connection between the second rack 17 and one of the sixth gear 14 and the seventh gear 15, the speed and accuracy of the movement of the first telescopic arm 1 can be changed. The diameter of the sixth gear 14 is larger than that of the seventh gear 15.

[0032] The first telescopic arm 1 is externally slidably connected to the second telescopic arm 2, and the second telescopic arm 2 is externally slidably connected to the telescopic groove 3. A threaded rod 20 is rotatably connected to the adjusting housing 18, and a transmission block 21 is slidably connected inside the adjusting housing 18. The transmission mechanism includes a first motor 11 disposed inside the transmission housing 4, and a transmission assembly disposed at the output end of the first motor 11. The transmission assembly includes a fourth gear 12 disposed at the output end of the first motor 11, and a fifth gear 13 meshing with the fourth gear 12. The fifth gear 13 is rotatably connected to the transmission housing 4. A connecting shaft 16 is fixedly connected to the side of the fifth gear 13 away from the fourth gear 12, and a sixth gear 14 and the first telescopic arm 1 are fixedly connected to the upper part of the connecting shaft 16.

[0033] In this embodiment, starting the first motor 11 drives the fourth gear 12 to rotate. The rotation of the fourth gear 12 drives the meshing fifth gear 13 to rotate, and the rotation of the fifth gear 13 drives the fixedly connected connecting shaft 16 to rotate. The connecting shaft 16 drives the sixth gear 14 and the seventh gear 15 to rotate, and the rotation of the sixth gear 14 and the seventh gear 15 drives the first telescopic arm 1 to move. During the movement of the first telescopic arm 1, starting the second motor 19 drives the threaded rod 20 to rotate. The rotation of the threaded rod 20 drives the threaded transmission block 21 to move, and the movement of the transmission block 21 drives the fixedly connected second rack 17 to move upward. Controlling the connection of the second rack 17 with the sixth gear 14 or the seventh gear 15 can adjust the movement accuracy of the first telescopic arm 1. Controlling the connection of the second rack 17 with the seventh gear 15 reduces the distance the first telescopic arm 1 moves each time, improving the telescopic accuracy. Controlling the connection of the second rack 17 with the sixth gear 14 increases the distance the first telescopic arm 1 moves each time, improving the telescopic speed.

[0034] Example 2

[0035] like Figs. 1-6 As shown, a first rack 5 is fixedly connected inside the telescopic groove 3. A first gear 6 is meshed with the upper part of the first rack 5. A second gear 7 is fixedly connected to the side of the first gear 6 away from the telescopic groove 3. The second gear 7 is rotatably connected to the first telescopic arm 1. A transmission belt 8 is driven by the second gear 7. A third gear 10 is driven by the side of the transmission belt 8 away from the second gear 7. The third gear 10 is rotatably connected to the first telescopic arm 1. A transmission component 9 is fixedly connected to the upper part of the transmission belt 8. A second telescopic arm 2 is fixedly connected to the upper part of the transmission component 9.

[0036] In this embodiment, while the first telescopic arm 1 moves, the first gear 6, which is disposed on one side of the first telescopic arm 1, can rotate along the first rack 5 fixedly connected inside the telescopic groove 3. The rotation of the first gear 6 can drive the fixedly connected second gear 7 to rotate. The rotation of the second gear 7 can drive the transmission belt 8 to drive the transmission. During the transmission process, the transmission component 9 fixedly connected to the upper part of the transmission belt 8 can drive the second telescopic arm 2 to move, so that the second telescopic arm 2 moves synchronously while the first telescopic arm 1 moves, thereby realizing multi-stage telescopic movement.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A multi-stage rigid telescopic mechanism comprising a first telescopic arm (1), characterized in that, The first telescopic arm (1) is externally provided with a telescopic slot (3), one side of the telescopic slot (3) is fixedly connected with a transmission housing (4), the transmission housing (4) is internally provided with a transmission mechanism, one side of the transmission mechanism is provided with a seventh gear (15) and a connecting shaft (16), the seventh gear (15) and the connecting shaft (16) are provided with a second rack (17) at the lower part, and the second rack (17) is fixedly connected with an adjusting mechanism on both sides, the adjusting mechanism comprises an adjusting housing (18) fixedly connected in the first telescopic arm (1), the adjusting housing (18) is provided with a second motor (19) at the upper part, the second motor (19) is provided with a threaded rod (20) at the output end, the threaded rod (20) is threadedly connected with a transmission block (21), and the transmission block (21) is fixedly connected with the second rack (17). The sixth gear (14) and the seventh gear (15) are driven to rotate by the transmission mechanism, the sixth gear (14) and the seventh gear (15) drive the meshing second rack (17) to move, the first telescopic arm (1) is driven to move by the movement of the second rack (17), and when the first telescopic arm (1) moves, the second motor (19) is started to drive the threaded rod (20) to rotate, the threaded rod (20) drives the threadedly connected transmission block (21) to move, and the movement of the transmission block (21) drives the second rack (17) to move upwards, and by controlling the second rack (17) to be connected with one of the sixth gear (14) and the seventh gear (15), the speed and the accuracy of the movement of the first telescopic arm (1) are changed.

2. A multi-stage rigid telescopic mechanism according to claim 1, characterized in that, The first telescopic arm (1) is externally provided with a telescopic slot (3), one side of the telescopic slot (3) is fixedly connected with a transmission housing (4), the transmission housing (4) is internally provided with a transmission mechanism, one side of the transmission mechanism is provided with a seventh gear (15) and a connecting shaft (16), the seventh gear (15) and the connecting shaft (16) are provided with a second rack (17) at the lower part, and the second rack (17) is fixedly connected with an adjusting mechanism on both sides, the adjusting mechanism comprises an adjusting housing (18) fixedly connected in the first telescopic arm (1), the adjusting housing (18) is provided with a second motor (19) at the upper part, the second motor (19) is provided with a threaded rod (20) at the output end, the threaded rod (20) is threadedly connected with a transmission block (21), and the transmission block (21) is fixedly connected with the second rack (17).

3. A multi-stage rigid telescopic mechanism according to claim 1, characterized in that, The threaded rod (20) is rotatably connected with the adjusting housing (18), and the adjusting housing (18) is slidably connected with the transmission block (21) internally.

4. The multi-stage rigid telescoping mechanism of claim 1, wherein, The transmission mechanism comprises a first motor (11) arranged in the transmission housing (4), and the first motor (11) is provided with a transmission assembly at the output end.

5. A multi-stage rigid telescoping mechanism according to claim 4, wherein, The transmission assembly comprises a fourth gear (12) arranged at the output end of the first motor (11), the fourth gear (12) is meshingly connected with a fifth gear (13), and the fifth gear (13) is rotatably connected with the transmission housing (4).

6. A multi-stage rigid telescoping mechanism according to claim 5, wherein, The fifth gear (13) is fixedly connected with the connecting shaft (16) away from the fourth gear (12) on one side, and the connecting shaft (16) is fixedly connected with the sixth gear (14) and the seventh gear (15) at the upper part.

7. A multi-stage rigid telescoping mechanism according to claim 2, wherein, The telescopic slot (3) is fixedly connected with a first rack (5) internally, and the first rack (5) is meshingly connected with a first gear (6) at the upper part.

8. A multi-stage rigid telescoping mechanism according to claim 7, wherein, The first gear (6) is fixedly connected with a second gear (7) away from the telescopic slot (3) on one side, and the second gear (7) is rotatably connected with the first telescopic arm (1).

9. A multi-stage rigid telescoping mechanism according to claim 8, wherein, The second gear (7) is drivingly connected with a transmission belt (8), the transmission belt (8) is drivingly connected with a third gear (10) on the side far from the second gear (7), and the third gear (10) is rotatably connected with the first telescopic arm (1).

10. A multi-stage rigid telescoping mechanism according to claim 9, wherein, The transmission belt (8) is fixedly connected with a transmission member (9) on the upper portion, and the transmission member (9) is fixedly connected with the second telescopic arm (2) on the upper portion.

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