Connecting structure of foldable multi-section conveying arm

Abstract

The utility model relates to mechanical arm technical field discloses the connecting structure of collapsible multistage conveying arm, including first connecting arm, the first connecting arm rear side is provided with second connecting arm, the first connecting arm with second connecting arm opposite side all are fixedly connected with limit board, two the limit board direct rotation is connected with connecting shaft, the connecting shaft front side rotation is connected with first conveying pipe, the connecting shaft rear side rotation is connected with second conveying pipe, second connecting arm front side fixedly connected with two second subassembly box. In the utility model, through setting up two limit boards between two conveying arms, after two conveying arms open and close to the angle that needs, through the start of two sets of air cylinders, push the connecting plate and fixed link to move backward, make fixed link insert between two limit boards, make two limit boards fixed, thus make two connecting arms fixed, solve the angle fixed that conveying arm between open and close rotates and cannot flexible adjustment problem.

Description

Technical Field

[0001] This utility model relates to the field of robotic arm technology, and in particular to the connection structure of a foldable multi-segment conveyor arm. Background Technology

[0002] Conveyor arms are important components in conveying equipment used to carry and transport materials. They can efficiently and continuously transport various types of materials, such as bulk materials, block materials, or finished goods, between different locations to meet the material transfer needs in the production process. They can also change the conveying distance and direction to a certain extent, thereby expanding the working range of the conveying equipment.

[0003] The existing connection structure of foldable multi-segment conveyor arms usually connects the conveyor arms with hinge shafts, allowing the two conveyor arms to rotate relative to each other within a certain angle range around the hinge shaft, thereby realizing folding and unfolding actions. However, in actual use, the opening and closing angle between the multi-segment conveyor arms must be adjusted according to different working scenarios in order to work more efficiently. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a foldable multi-segment conveyor arm connection structure, which aims to solve the problem that the opening and closing rotation angles between the conveyor arms are fixed and cannot be flexibly adjusted.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a foldable multi-segment conveying arm connection structure, including a first connecting arm, a second connecting arm disposed on the rear side of the first connecting arm, a limit plate fixedly connected to the opposite side of the first and second connecting arms, a connecting shaft directly rotatably connected to the two limit plates, a first conveying pipe rotatably connected to the front side of the connecting shaft, a second conveying pipe rotatably connected to the rear side of the connecting shaft, two second component boxes fixedly connected to the front side of the second connecting arm, two cylinders fixedly connected to the rear side of the inner wall of each of the two second component boxes, a connecting plate fixedly connected to the output end of each of the two cylinders, a fixing rod fixedly connected to the rear side of the connecting plate, a connecting rod slidably connected to the rear side of the inner wall of the fixing rod, and an anti-fall component disposed on the front side of the first connecting arm, the anti-fall component being used for emergency fixation when the connecting device fails during the use of the conveying arm.

[0006] Preferably, the fall arrestor includes a third component box, which is fixedly connected to the first connecting arm. A winch is fixedly connected to the bottom of the inner wall of the third component box, and a winding shaft is fixedly provided at the output end of the winch. A steel cable is provided on the outer surface of the winding shaft, and a detector is fixedly connected to the rear side of the inner wall of the third component box.

[0007] Preferably, a first component box is fixedly connected to the top front side of the first connecting arm, a motor is fixedly connected to the front inner wall of the first component box, a gear is fixedly provided at the output end of the motor, and a rack is fixedly connected to the front inner wall of the second connecting arm.

[0008] Preferably, the two limiting plates are rotatably connected, and the surface of the limiting plates is provided with grooves for limiting movement.

[0009] Preferably, the gear and the rack are meshed together, and the gear rotates to drive the rack to rotate.

[0010] Preferably, the rear side of the connecting rod is slidably connected to the front side of the inner wall of the second connecting arm, and the front side of the connecting rod is fixedly connected to the second component box.

[0011] Preferably, the steel cable is spirally wound around the outer surface of the winding shaft, and the steel cable is wound and unwound by rotating the winding shaft.

[0012] Preferably, the steel cable passes sequentially through the detector, the third component box, and the front limiting plate, and the steel cable is fixedly connected to the rear limiting plate.

[0013] This utility model has the following beneficial effects:

[0014] 1. In this utility model, by setting two limiting plates between two conveying arms, after the two conveying arms open and close to the required angle, the upper and lower sets of cylinders are activated to push the connecting plate and the fixing rod to move backward, so that the fixing rod is inserted between the two limiting plates, thereby fixing the two limiting plates and fixing the two connecting arms, thus solving the problem that the angle of opening and closing rotation between the conveying arms cannot be flexibly adjusted.

[0015] 2. In this utility model, a steel cable is set between the two limiting plates. When the connection structure fails, the steel cable is fixed to the rear limiting plate and is tightened when the second connecting arm rotates. After the detector senses the tension of the steel cable, it controls the winch to rotate and retract the steel cable, so that the second connecting arm is pulled and kept in its original position until maintenance. This solves the problem that the conveyor arm will lose force and fall, causing damage when the connection structure fails. Attached Figure Description

[0016] Figure 1 This is a perspective view of the connection structure of the foldable multi-segment conveyor arm proposed in this utility model;

[0017] Figure 2 A schematic diagram of the limiting plate of the connection structure of the foldable multi-segment conveyor arm proposed in this utility model;

[0018] Figure 3 A schematic diagram of the rack connecting the foldable multi-segment conveyor arm proposed in this utility model;

[0019] Figure 4 A schematic diagram of the fixing rod of the connecting structure of the foldable multi-segment conveyor arm proposed in this utility model;

[0020] Figure 5 This is a schematic diagram of the steel cable connecting the foldable multi-segment conveyor arm proposed in this utility model.

[0021] Legend:

[0022] 1. First connecting arm; 2. Second connecting arm; 3. First conveying pipe; 4. Second conveying pipe; 5. Limiting plate; 6. Connecting shaft; 7. Motor; 8. Rack; 9. Gear; 10. First component box; 11. Second component box; 12. Connecting rod; 13. Fixing rod; 14. Cylinder; 15. Connecting plate; 16. Third component box; 17. Winch; 18. Winding shaft; 19. Detector; 20. Steel cable. Detailed Implementation

[0023] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0024] Reference Figures 1-4 This utility model provides an embodiment of a foldable multi-segment conveying arm connection structure, including a first connecting arm 1, a second connecting arm 2 disposed on the rear side of the first connecting arm 1, a limit plate 5 fixedly connected to the opposite side of the first connecting arm 1 and the second connecting arm 2, a connecting shaft 6 directly rotatably connected to the two limit plates 5, a first conveying pipe 3 rotatably connected to the front side of the connecting shaft 6, a second conveying pipe 4 rotatably connected to the rear side of the connecting shaft 6, two second component boxes 11 fixedly connected to the front side of the second connecting arm 2, two cylinders 14 fixedly connected to the rear side of the inner wall of each of the two second component boxes 11, a connecting plate 15 fixedly connected to the output end of the two cylinders 14, a fixing rod 13 fixedly connected to the rear side of the connecting plate 15, a connecting rod 12 slidably connected to the rear side of the inner wall of the fixing rod 13, and an anti-fall component disposed on the front side of the first connecting arm 1, the anti-fall component being used for emergency fixation when the connecting device fails during the use of the conveying arm.

[0025] Specifically, a connecting shaft 6 is provided between the first connecting arm 1 and the second connecting arm 2. The two connecting arms rotate on the outer surface of the connecting shaft 6 through two limiting plates 5, thereby folding and unfolding. The first conveying pipe 3 and the second conveying pipe 4 are respectively provided on the front and rear sides of the connecting shaft 6, and are fixedly connected to the first connecting arm 1 and the second connecting arm 2 respectively. When the two connecting arms rotate, the two conveying pipes are also driven to rotate due to their rotational connection with the connecting shaft 6. After the second connecting arm 2 rotates to a certain angle, the cylinder 14 is activated, causing the fixing rod 13 to be inserted between the two limiting plates 5. By different insertion positions, the two conveying arms are fixed at the required angle, solving the problem that the angle of opening and closing rotation between the conveying arms cannot be flexibly adjusted.

[0026] Reference Figure 5 The fall arrestor includes a third component box 16, which is fixedly connected to the first connecting arm 1. A winch 17 is fixedly connected to the bottom of the inner wall of the third component box 16. A winding shaft 18 is fixedly installed at the output end of the winch 17. A steel cable 20 is installed on the outer surface of the winding shaft 18. A detector 19 is fixedly connected to the rear side of the inner wall of the third component box 16.

[0027] Specifically, the third component box 16 is fixed at the bottom of the first connecting arm 1, located to the left of the bottom second component box 11. When the two conveying arms are unfolded, the rear limiting plate 5 rotates clockwise, and the reverse occurs during retraction. When the second connecting arm 2 is de-stressed, the other end of the second connecting arm 2 falls downward due to its own weight, causing the whole to rotate counterclockwise. When the rear limiting plate 5 rotates counterclockwise, it will drive the steel cable 20 to pull outward, which will be detected by the detector 19, causing the winch 17 to start and pull the rear limiting plate 5 and the second connecting arm 2 back to their original positions by winding the steel cable 20 until maintenance is required. This solves the problem that the conveying arm will be de-stressed and fall, causing damage when the connection structure fails.

[0028] Reference Figure 3 The first connecting arm 1 is fixedly connected to the top front side of the first component box 10. The first component box 10 is fixedly connected to the front inner wall of the first component box 10. The output end of the motor 7 is fixedly provided with a gear 9. The second connecting arm 2 is fixedly connected to the front inner wall of the second connecting arm 2.

[0029] Specifically, the output end of the motor 7 passes through the two limiting plates 5 and the second connecting arm 2, and the gear 9 is also located in the inner wall of the second connecting arm 2.

[0030] Reference Figure 4 The two limiting plates 5 are rotatably connected, and the surface of the limiting plate 5 is provided with a groove for limiting.

[0031] Specifically, when the second connecting arm 2 rotates, the rear limiting plate 5 also rotates. When the limiting plate 5 rotates, the connecting rod 12 is located in the groove of the limiting plate 5, which does not affect the rotation of the limiting plate 5.

[0032] Reference Figure 3 Gear 9 and rack 8 are meshed together, and when gear 9 rotates, it drives rack 8 to rotate.

[0033] Specifically, when gear 9 is driven to rotate by motor 7, rack 8 also rotates through meshing connection, thereby causing second connecting arm 2 to rotate, achieving the purpose of folding and opening / closing the conveyor arm.

[0034] Reference Figure 3 , Figure 4 The rear side of the connecting rod 12 is slidably connected to the front side of the inner wall of the second connecting arm 2, and the front side of the connecting rod 12 is fixedly connected to the second component box 11.

[0035] Specifically, the connecting rod 12 is fixed between the two connecting arms. When the second connecting arm 2 rotates, the connecting rod 12 passes through the grooves on the two limiting plates 5 and rotates on the rear side of the inner wall of the second connecting arm 2.

[0036] Reference Figure 5 The steel cable 20 is spirally wound on the outer surface of the winding shaft 18, and the steel cable 20 is wound and unwound by the rotation of the winding shaft 18.

[0037] Specifically, when the two connecting arms are unfolded, the winch 17 starts simultaneously with the speed of the motor 7 to wind up the steel cable 20. When the two connecting arms are folded, the winch 17 releases the steel cable 20 in coordination with the speed of the motor 7.

[0038] Reference Figure 5 The steel cable 20 passes through the detector 19, the third component box 16 and the front limiting plate 5 in sequence, and the steel cable 20 is fixedly connected to the rear limiting plate 5.

[0039] Specifically, when the second connecting arm 2 suddenly loses its tension, the steel cable 20 suddenly tightens. After being detected by the detector 19, the winch 17 is controlled to wind up the cable and suspend the second connecting arm 2 to prevent it from falling and being damaged due to the loss of tension.

[0040] Working principle: When the transmission is in progress, the motor 7 is started and the gear 9 is rotated by the motor 7. Through meshing, the rack 8 in the inner wall of the second connecting arm 2 also rotates, thereby causing the second connecting arm 2 to rotate and achieve the purpose of opening and closing the conveying arm. After the second connecting arm 2 is opened or closed to the required angle, the cylinder 14 is started to push the connecting plate 15 and the fixing rod 13 to move backward, so that the fixing rod 13 is inserted between the two limiting plates 5 to complete the fixation.

[0041] When the connecting device between the conveyor arms malfunctions, the second connecting arm 2 loses its limit and becomes unloaded. Due to its own weight, the other end of the second connecting arm 2 falls downward. At the same time, the rear limit plate 5 rotates counterclockwise along with the second connecting arm. The steel cable 20 suddenly becomes taut. After being detected by the detector 19, the winch 17 is controlled to wind up the cable and suspend the second connecting arm 2 to prevent it from being damaged due to falling due to unloaded force.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A connecting structure for a foldable multi-segment conveying arm, comprising a first connecting arm (1), characterized in that: A second connecting arm (2) is provided on the rear side of the first connecting arm (1). Limiting plates (5) are fixedly connected to the opposite side of the first connecting arm (1) and the second connecting arm (2). The two limiting plates (5) are directly rotatably connected to a connecting shaft (6). A first conveying pipe (3) is rotatably connected to the front side of the connecting shaft (6). A second conveying pipe (4) is rotatably connected to the rear side of the connecting shaft (6). Two second component boxes (11) are fixedly connected to the front side of the second connecting arm (2). Two cylinders (14) are fixedly connected to the rear side of the inner wall of the two second component boxes (11). A connecting plate (15) is fixedly connected to the output end of the two cylinders (14). A fixing rod (13) is fixedly connected to the rear side of the connecting plate (15). A connecting rod (12) is slidably connected to the rear side of the inner wall of the fixing rod (13). A fall protection component is provided on the front side of the first connecting arm (1). The fall protection component is used for emergency fixation when the connecting device fails during the use of the conveying arm.

2. The connection structure of the foldable multi-segment conveyor arm according to claim 1, characterized in that: The fall arrestor includes a third component box (16), which is fixedly connected to the first connecting arm (1). A winch (17) is fixedly connected to the bottom of the inner wall of the third component box (16). A winding shaft (18) is fixedly provided at the output end of the winch (17). A steel cable (20) is provided on the outer surface of the winding shaft (18). A detector (19) is fixedly connected to the rear side of the inner wall of the third component box (16).

3. The connection structure of the foldable multi-segment conveyor arm according to claim 1, characterized in that: The first connecting arm (1) is fixedly connected to the top front side of the first component box (10), and the motor (7) is fixedly connected to the front inner wall of the first component box (10). The output end of the motor (7) is fixedly provided with a gear (9), and the rack (8) is fixedly connected to the front inner wall of the second connecting arm (2).

4. The connection structure of the foldable multi-segment conveyor arm according to claim 1, characterized in that: The two limiting plates (5) are rotatably connected, and the surface of the limiting plate (5) is provided with a groove for limiting.

5. The connection structure of the foldable multi-segment conveyor arm according to claim 3, characterized in that: The gear (9) is meshed with the rack (8), and the gear (9) rotates to drive the rack (8) to rotate.

6. The connection structure of the foldable multi-segment conveyor arm according to claim 1, characterized in that: The rear side of the connecting rod (12) is slidably connected to the front side of the inner wall of the second connecting arm (2), and the front side of the connecting rod (12) is fixedly connected to the second component box (11).

7. The connection structure of the foldable multi-segment conveyor arm according to claim 2, characterized in that: The steel cable (20) is spirally wound around the outer surface of the winding shaft (18), and the steel cable (20) is wound and unwound by the rotation of the winding shaft (18).

8. The connection structure of the foldable multi-segment conveyor arm according to claim 2, characterized in that: The steel cable (20) passes through the detector (19), the third component box (16) and the front limiting plate (5) in sequence, and the steel cable (20) is fixedly connected to the rear limiting plate (5).

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