Mechanical arm with adjustable arm span

Abstract

The utility model discloses a mechanical arm with adjustable arm extension, which belongs to the technical field of mechanical arms, and is characterized by comprising a base, a six-axis mechanical arm is fixed at the top of the base, one mechanical arm of the six-axis mechanical arm is a telescopic arm, the end part of the six-axis mechanical arm is a working head, the telescopic arm comprises a fixed cylinder and a movable arm, and the movable arm is fixed on the fixed cylinder. The movable arm is inserted into the fixed cylinder and moves reversely along the axis of the fixed cylinder, and a driving assembly enabling the movable arm to move is arranged on one side of the fixed cylinder. According to the six-axis mechanical arm, the gear is driven by the gear motor to rotate, the gear rotates to enable the movable arm to move along the fixed cylinder through the tooth groove, so that the length of the telescopic arm is changed, the arm extension range of the six-axis mechanical arm is effectively adjusted, the second magnetic block and the connecting shaft are magnetically attracted, and the rotating resistance of the connecting shaft is increased; and magnetic attraction is generated through the first magnetic block and the second magnetic block at different angles at the same time, so that the gear can be locked to a certain extent at different rotation angles.

Description

Technical Field

[0001] The utility model belongs to the technical field of mechanical arms, and in particular relates to a mechanical arm with adjustable arm span. Background Art

[0002] A robotic arm is a robot mechanism designed to imitate the human arm. It is mainly used to perform precise spatial positioning and manipulation tasks. The six-axis robotic arm consists of six joints, each of which can rotate or extend. This design enables it to perform precise positioning and complex movements in three-dimensional space. Each axis can move independently, and the cooperation with each other can achieve a variety of different operating modes.

[0003] However, the arm span of the commonly used six-axis robotic arm is limited, resulting in a limited operating range. For this reason, we propose a robotic arm with adjustable arm span to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the utility model is to provide a mechanical arm with adjustable arm span to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A robotic arm with adjustable arm span comprises a base, a six-axis robotic arm is fixed on the top of the base, one of the six-axis robotic arms is a telescopic arm, the end of the six-axis robotic arm is a working head, the telescopic arm comprises a fixed cylinder and a movable arm, the movable arm is inserted into the fixed cylinder and moves in the opposite direction along the axis of the fixed cylinder, and a driving component for moving the movable arm is provided on one side of the fixed cylinder.

[0007] Preferably, the driving assembly is two vertical bearing seats, both of which are fixedly connected to the outer wall of one side of the fixed cylinder, a plurality of tooth grooves are opened on one side of the movable arm, a connecting shaft is provided between the two vertical bearing seats, one side of the connecting shaft is fixedly connected with a gear meshing with the tooth groove, one end of the connecting shaft is fixedly connected with a synchronous pulley 2, the other side outer wall of the fixed cylinder is fixedly connected with a reduction motor, one end of the output shaft of the reduction motor is fixedly connected with a synchronous pulley 1, and the synchronous pulley 1 and the synchronous pulley 2 are connected by a synchronous belt drive.

[0008] Preferably, a second vertical bearing seat is fixedly connected to the outer wall of the other side of the fixed cylinder, and the second vertical bearing seat is sleeved on the outer side of the output shaft of the reduction motor.

[0009] Preferably, an anti-rotation surface is provided between the movable arm and the fixed cylinder, and the tooth groove is provided on the anti-rotation surface.

[0010] Preferably, a second magnetic block is fixedly connected to an outer wall of one side of the fixed cylinder, and a plurality of first magnetic blocks are fixedly connected to a circumferential outer wall of the connecting shaft.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows: the rotation of the reduction motor causes the synchronous pulley one to drive the synchronous pulley two to rotate, the rotation of the synchronous pulley two causes the connecting shaft to drive the gear to rotate, the rotation of the gear causes the movable arm to move along the fixed cylinder through the tooth groove, thereby changing the length of the telescopic arm, and further effectively adjusting the arm span range of the six-axis robot arm, and by magnetically attracting the connecting shaft with the magnetic block two and increasing the rotation resistance of the connecting shaft, and by rotating the connecting shaft to different angles, the magnetic blocks one and two at different angles generate magnetic attraction at the same time, thereby further improving the locking of the gear to a certain extent at different rotation angles. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a left side stereogram of the utility model;

[0013] Figure 2 It is an enlarged view of part A of the utility model;

[0014] Figure 3 It is a right side stereogram of the utility model;

[0015] Figure 4 It is an enlarged view of part B of the present utility model.

[0016] In the figure: 1. telescopic arm; 2. working head; 3. base; 4. magnetic block 1; 5. moving arm; 6. tooth groove; 7. gear; 8. vertical bearing seat 1; 9. connecting shaft; 10. magnetic block 2; 11. fixed cylinder; 12. synchronous pulley 1; 13. synchronous pulley 2; 14. vertical bearing seat 2; 15. reduction motor. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0018] See also Figure 1-Figure 4The utility model provides a mechanical arm with adjustable arm span, including a base 3, a six-axis mechanical arm is fixed on the top of the base 3, one of the mechanical arms of the six-axis mechanical arm is a telescopic arm 1, the end of the six-axis mechanical arm is a working head 2, the telescopic arm 1 includes a fixed cylinder 11 and a movable arm 5, the movable arm 5 is inserted in the fixed cylinder 11 and moves in the opposite direction along the axis of the fixed cylinder 11, and a driving component for moving the movable arm 5 is provided on one side of the fixed cylinder 11, so that the driving component drives the movable arm 5 to move along the fixed cylinder 11, so that the length of the telescopic arm 1 is changed, and then the arm span range of the six-axis mechanical arm is effectively adjusted.

[0019] In this embodiment, the driving components are two vertical bearing seats 8, and the two vertical bearing seats 8 are fixed to the outer wall of one side of the fixed cylinder 11 by bolts. A plurality of tooth grooves 6 are opened on one side of the movable arm 5. A connecting shaft 9 is provided between the two vertical bearing seats 8. A gear 7 meshing with the tooth groove 6 is keyed to one side of the connecting shaft 9, and a synchronous pulley 2 13 is keyed to one end of the connecting shaft 9. A reduction motor 15 is fixed to the outer wall of the other side of the fixed cylinder 11 by bolts, and one end of the output shaft of the reduction motor 15 is keyed to the synchronous belt pulley 2 13. The synchronous pulley 12 is connected with the synchronous pulley 2 13 through a synchronous belt transmission. By starting the reduction motor 15, the reduction motor 15 rotates to make the synchronous pulley 12 drive the synchronous pulley 2 13 to rotate. The synchronous pulley 2 13 rotates to make the connecting shaft 9 drive the gear 7 to rotate. The gear 7 rotates through the tooth groove 6 to make the movable arm 5 move along the fixed cylinder 11. The outer wall on the other side of the fixed cylinder 11 is fixed with a vertical bearing seat 2 14 by bolts, and the vertical bearing seat 2 14 is sleeved on the outer side of the output shaft of the reduction motor 15.

[0020] In this embodiment, an anti-rotation surface is provided between the movable arm 5 and the fixed tube 11 , and the tooth groove 6 is provided on the anti-rotation surface, so as to prevent the movable arm 5 from rotating.

[0021] In this embodiment, a magnet block 10 is fixed to one side outer wall of the fixed cylinder 11 by bolts, and a plurality of magnet blocks 14 are fixed to the circumferential outer wall of the connecting shaft 9 by bolts, so that the magnet block 10 is magnetically attracted to the connecting shaft 9 and the rotation resistance of the connecting shaft 9 is increased, and the connecting shaft 9 is rotated to different angles so that the magnet blocks 14 at different angles are magnetically attracted to the magnet block 10 at the same time, thereby further improving the locking of the gear 7 to a certain extent at different rotation angles.

[0022] The working principle and use process of the utility model are as follows: by starting the reduction motor 15, the reduction motor 15 rotates to make the synchronous pulley 12 drive the synchronous pulley 2 13 to rotate, the synchronous pulley 2 13 rotates to make the connecting shaft 9 drive the gear 7 to rotate, the gear 7 rotates through the tooth groove 6 to make the movable arm 5 move along the fixed cylinder 11, so that the length of the telescopic arm 1 is changed, and then the arm span range of the six-axis robot arm is effectively adjusted, and the magnetic block 2 10 is magnetically attracted to the connecting shaft 9 and the rotation resistance of the connecting shaft 9 is increased, and the connecting shaft 9 is rotated to different angles, so that the magnetic blocks 1 4 and the magnetic block 2 10 at different angles are magnetically attracted at the same time, thereby further improving the locking of the gear 7 to a certain extent at different rotation angles.

[0023] The electronic components and modules used in the content of this utility model can all be parts commonly used in the market that can realize the specific functions in this case, and the specific models and sizes can be selected and adjusted according to actual needs.

[0024] The above shows and describes the basic principles, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mechanical arm with adjustable arm span, comprising a base (3), a six-axis mechanical arm fixed on the top of the base (3), characterized in that: One of the six-axis robot arms is a telescopic arm (1), the end of the six-axis robot arm is a working head (2), the telescopic arm (1) comprises a fixed cylinder (11) and a movable arm (5), the movable arm (5) is inserted into the fixed cylinder (11) and moves in the opposite direction along the axis of the fixed cylinder (11), and a driving component for moving the movable arm (5) is provided on one side of the fixed cylinder (11).

2. The mechanical arm with adjustable arm span according to claim 1, characterized in that: The driving assembly comprises two vertical bearing seats (8), the two vertical bearing seats (8) are fixedly connected to the outer wall of one side of the fixed cylinder (11), a plurality of tooth grooves (6) are provided on one side of the movable arm (5), a connecting shaft (9) is provided between the two vertical bearing seats (8), one side of the connecting shaft (9) is fixedly connected to a gear (7) meshing with the tooth groove (6), one end of the connecting shaft (9) is fixedly connected to a synchronous pulley (13), the other side outer wall of the fixed cylinder (11) is fixedly connected to a reduction motor (15), one end of the output shaft of the reduction motor (15) is fixedly connected to a synchronous pulley (12), and the synchronous pulley (12) and the synchronous pulley (13) are connected through a synchronous belt transmission.

3. The mechanical arm with adjustable arm span according to claim 2, characterized in that: The outer wall of the other side of the fixed cylinder (11) is fixedly connected with a second vertical bearing seat (14), and the second vertical bearing seat (14) is sleeved on the outer side of the output shaft of the reduction motor (15).

4. The mechanical arm with adjustable arm span according to claim 1, characterized in that: An anti-rotation surface is provided between the movable arm (5) and the fixed cylinder (11), and the tooth groove (6) is provided on the anti-rotation surface.

5. The mechanical arm with adjustable arm span according to claim 2, characterized in that: A second magnetic block (10) is fixedly connected to an outer wall of one side of the fixed cylinder (11), and a plurality of first magnetic blocks (4) are fixedly connected to an outer circumferential wall of the connecting shaft (9).

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