Mechanical arm rotating joint

Abstract

The utility model relates to the technical field of mechanical arms, in particular to a mechanical arm rotating joint which comprises a side plate, a rotating plate, a first disc, a second disc, a sleeve shell and a baffle, the sleeve shell is welded to the outer side of the side plate, connecting protruding blocks are arranged at the positions, close to each other, of the baffle and the sleeve shell, and the connecting protruding blocks are connected through second bolts. Grooves are formed in the positions, close to the inner wall of the baffle, of the sleeve shell, bearings are arranged in the grooves in a sleeved mode, and the bearings are located on the outer side of the rotating plate. A contact plate is arranged on the inner side of the rotating plate, an adjusting stud is arranged on one side of the top end of the side plate through a threaded groove, the outer side of the end of the adjusting stud is sleeved with a shaft sleeve, and the shaft sleeve is connected with one side of the top end of the contact plate; when rotating, the rotating joint is provided with a structure capable of conveniently adjusting static friction force, and when the rotating joint does not apply external rotating force, the locking force between the two sets of mechanical arms can be conveniently adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arms, in particular to a mechanical arm rotation joint. Background Art

[0002] The revolute joints of a robot arm are usually made up of several different types of mechanisms that allow the robot arm to rotate and move in space. The revolute joint allows the robot arm to rotate around an axis. This joint is usually supported by bearings so that the robot arm can rotate freely on this axis.

[0003] Conventional rotary joints do not have a structure that can conveniently adjust static friction when rotating. When the rotary joint does not apply external rotational force, the locking force between the two sets of robotic arms cannot be conveniently adjusted. Utility Model Content

[0004] In response to the problems in the prior art, the utility model provides a mechanical arm rotating joint, which has a structure that can conveniently adjust the static friction force when rotating. When the rotating joint does not apply external rotational force, the locking force between the two sets of mechanical arms can be conveniently adjusted.

[0005] The technical solution adopted by the utility model to solve the technical problem is a mechanical arm rotating joint, comprising a side plate, a rotating plate, a first disc, a second disc, a casing and a baffle, the outer side of the side plate is welded with a casing, the baffle and the casing are both provided with connecting protrusions near each other, the connecting protrusions are connected by a second bolt, the casing and the inner wall of the baffle are both provided with grooves near each other, the grooves are provided with bearings, and the bearings are located on the outer side of the rotating plate;

[0006] A contact plate is arranged on the inner side of the rotating plate, an adjusting stud is arranged on one side of the top end of the side plate through a threaded groove, a shaft sleeve is sleeved on the outer side of the end of the adjusting stud, the shaft sleeve is connected to one side of the top end of the contact plate, guide grooves are opened on both sides and one side of the bottom end of the side plate, a guide rod is arranged in the guide groove, the end of the guide rod is connected to the contact plate, and a glass fiber layer is arranged on the outer surface of the contact plate.

[0007] By adopting the above technical scheme, the rotating plate can rotate relative to the side plate through the bearing, and the side plate, the sleeve shell, the baffle plate, the bearing and the rotating plate constitute a mechanical arm rotating joint, and by applying external rotational force to the adjusting stud, the shaft sleeve and the contact plate are driven to move horizontally under the limiting effect of the guide groove on the guide rod, so that the glass fiber layer on the outer wall of the contact plate contacts the inner side of the rotating plate, and the static friction force of the glass fiber layer on the inner wall of the rotating plate is utilized, so that when no external rotational force is applied to the rotating plate, the angle of the rotating plate is fixed, and because the tightness of the contact between the contact plate and the rotating plate can be adjusted, the rotating joint has a structure that can conveniently adjust the static friction when it rotates, and when the rotating joint does not apply external rotational force, the locking force between the two sets of mechanical arms can be conveniently adjusted.

[0008] Specifically, a fixing seat is fixed to the inner wall of the side plate by a first bolt, a limiting groove is arranged near the center at one end of the fixing seat, a rotating shaft is connected to the inner wall of the rotating plate near the center, and the end of the rotating shaft is located in the limiting groove.

[0009] Specifically, a through slot is provided near the center of one end of the contact plate, and the rotating shaft passes through the through slot.

[0010] Specifically, sleeve blocks are arranged at positions corresponding to one end of the side plate and the adjusting stud and the guide rod.

[0011] Specifically, the end of the rotating plate away from the side plate is respectively connected to the first disk and the second disk, and the first disk and the second disk are both provided with mounting screw holes near the edge of one end.

[0012] By adopting the above technical solution, the two groups of structures that need to rotate relative to each other can be conveniently connected to the first disc and the second disc through the cooperation of external bolts and mounting screw holes, so that when the rotating plate and the side plate rotate relative to each other, the two groups of structures connected to the first disc and the second disc can also be driven to rotate.

[0013] Specifically, the outer surfaces of the casing, the side plate, the rotating plate, the first disc, the second disc and the baffle are all provided with corrosion-resistant layers, and the corrosion-resistant layers are made of polyurethane material.

[0014] By adopting the above technical solution, the corrosion resistance of the outer layers of the casing, the side plate, the rotating plate, the first disc, the second disc and the baffle can be effectively improved by using the corrosion-resistant layer made of polyurethane material.

[0015] Beneficial effects of the utility model:

[0016] (1) The utility model discloses a mechanical arm rotating joint, which applies external rotational force to the adjusting stud, and under the limiting effect of the guide groove on the guide rod, drives the shaft sleeve and the contact plate to move horizontally, so that the glass fiber layer on the outer wall of the contact plate contacts the inner side of the rotating plate. Since the tightness of the contact between the contact plate and the rotating plate can be adjusted, the rotating joint has a structure that can conveniently adjust the static friction force when rotating. When the rotating joint does not apply external rotational force, the locking force between the two sets of mechanical arms can be conveniently adjusted. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a side view structural schematic diagram of the side plate and the second disc of the utility model;

[0020] Figure 3 It is a schematic diagram of the contact plate, adjusting stud and guide rod structure of the utility model;

[0021] Figure 4 It is a schematic diagram of the inner structure of the side panel of the utility model.

[0022] In the figure: 1, casing; 2, side plate; 3, first bolt; 4, fixing seat; 5, rotating shaft; 6, rotating plate; 7, first disc; 8, second disc; 9, mounting screw hole; 10, threaded groove; 11, adjusting stud; 12, bushing; 13, guide rod; 14, guide groove; 15, sleeve block; 16, baffle; 17, connecting protrusion; 18, second bolt; 19, groove; 20, bearing; 21, contact plate; 22, limit groove; 23, glass fiber layer. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0024] In order to make the rotary joint have a structure that can easily adjust the static friction when rotating, when the rotary joint does not apply external rotational force, the locking force between the two sets of mechanical arms can be adjusted, such as Figure 1-4As shown, a mechanical arm rotating joint described in the utility model comprises a side plate 2, a rotating plate 6, a first disc 7, a second disc 8, a casing 1 and a baffle 16, the casing 1 is welded to the outer side of the side plate 2, the baffle 16 and the casing 1 are both provided with connecting protrusions 17 near each other, the connecting protrusions 17 are connected by a second bolt 18, the casing 1 and the inner wall of the baffle 16 are both provided with grooves 19 near each other, the grooves 19 are sleeved with bearings 20, and the bearings 20 are located on the outer side of the rotating plate 6;

[0025] A contact plate 21 is provided on the inner side of the rotating plate 6, an adjusting stud 11 is provided on one side of the top end of the side plate 2 through a threaded groove 10, a shaft sleeve 12 is sleeved on the outer side of the end of the adjusting stud 11, and the shaft sleeve 12 is connected to one side of the top end of the contact plate 21, guide grooves 14 are provided on both sides and one side of the bottom end of the side plate 2, a guide rod 13 is provided in the guide groove 14, and the end of the guide rod 13 is connected to the contact plate 21, and a glass fiber layer 23 is provided on the outer surface of the contact plate 21.

[0026] When in use, the rotating plate 6 can rotate relative to the side plate 2 through the bearing 20. The side plate 2, the sleeve shell 1, the baffle 16, the bearing 20 and the rotating plate 6 constitute a mechanical arm rotating joint. By applying an external rotational force to the adjusting stud 11, the guide groove 14 limits the guide rod 13, so that the shaft sleeve 12 and the contact plate 21 are driven to move horizontally, so that the glass fiber layer 23 on the outer wall of the contact plate 21 contacts the inner side of the rotating plate 6. The static friction force of the glass fiber layer 23 on the inner wall of the rotating plate 6 is utilized, so that when no external rotational force is applied to the rotating plate 6, the angle of the rotating plate 6 is fixed, and because the tightness of the contact between the contact plate 21 and the rotating plate 6 can be adjusted, the rotating joint has a structure that can conveniently adjust the static friction when it rotates, and when the rotating joint does not apply an external rotational force, the locking force between the two sets of mechanical arms can be conveniently adjusted.

[0027] For example, Figure 1 As shown, the utility model also includes that the inner wall of the side plate 2 is fixed with a fixing seat 4 by a first bolt 3, a limiting groove 22 is arranged near the center at one end of the fixing seat 4, a rotating shaft 5 is connected near the center at the inner wall of the rotating plate 6, and the end of the rotating shaft 5 is located in the limiting groove 22.

[0028] When in use, the end of the rotating shaft 5 can be conveniently limited by the limiting groove 22 .

[0029] For example, Figure 1 and Figure 3 As shown, the utility model also includes that a through slot is opened near the center of one end of the contact plate 21, and the rotating shaft 5 passes through the through slot.

[0030] When in use, the through slot allows the rotating shaft 5 at one end of the rotating plate 6 to pass through.

[0031] For example, Figure 1 , Figure 2 and Figure 4 As shown, the utility model also includes that a sleeve block 15 is provided at one end of the side plate 2 at positions corresponding to the adjusting stud 11 and the guide rod 13 .

[0032] When in use, the sleeve block 15 is used to conveniently shield and protect the adjusting stud 11 and one end of the guide rod 13 .

[0033] For example, Figure 1-2 As shown, the utility model also includes that the end of the rotating plate 6 away from the side plate 2 is respectively connected to the first disk 7 and the second disk 8, and the first disk 7 and the second disk 8 are both provided with mounting screw holes 9 near the edge of one end.

[0034] When in use, the two groups of structures that need to rotate relative to each other are conveniently connected to the first disc 7 and the second disc 8 by cooperating with the external bolts and the mounting screw holes 9, so that when the rotating plate 6 and the side plate 2 rotate relative to each other, the two groups of structures externally connected to the first disc 7 and the second disc 8 can also be driven to rotate.

[0035] For example, Figure 1-4 As shown, the utility model also includes that the outer surfaces of the casing 1, the side plate 2, the rotating plate 6, the first disc 7, the second disc 8 and the baffle 16 are all provided with a corrosion-resistant layer, and the corrosion-resistant layer is made of polyurethane material.

[0036] When in use, the corrosion-resistant layer made of polyurethane material can effectively improve the corrosion resistance of the outer layers of the casing 1, the side plate 2, the rotating plate 6, the first disc 7, the second disc 8 and the baffle 16.

[0037] When the utility model is in use, the rotating plate 6 can rotate relative to the side plate 2 through the bearing 20. The side plate 2, the sleeve shell 1, the baffle 16, the bearing 20 and the rotating plate 6 constitute a mechanical arm rotating joint. By applying an external rotating force to the adjusting stud 11, the guide groove 14 limits the guide rod 13, so that the shaft sleeve 12 and the contact plate 21 are driven to move horizontally, so that the glass fiber layer 23 on the outer wall of the contact plate 21 is in contact with the inner side of the rotating plate 6. The static friction force of the glass fiber layer 23 on the inner wall of the rotating plate 6 is used to fix the angle of the rotating plate 6 when no external rotating force is applied to the rotating plate 6. Since the tightness of the contact plate 21 and the rotating plate 6 can be adjusted when they are in contact, the rotating joint has a structure that can conveniently adjust the static friction when it rotates. When the rotating joint does not apply an external rotating force, the locking force between the two sets of mechanical arms can be conveniently adjusted.

[0038] By cooperating with the external bolts and the mounting screw holes 9, it is convenient to connect the two groups of structures that need to rotate relative to each other with the first disk 7 and the second disk 8, so that when the rotating plate 6 and the side plate 2 rotate relative to each other, the two groups of structures connected to the first disk 7 and the second disk 8 can also be driven to rotate.

[0039] 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 in the specification are only to illustrate 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 protection required by the utility model. The scope of protection required by the utility model is defined by the attached claims and their equivalents.

Claims

1. A mechanical arm rotation joint, characterized in that: The invention comprises a side plate (2), a rotating plate (6), a first disc (7), a second disc (8), a casing (1) and a baffle (16), wherein the casing (1) is welded to the outer side of the side plate (2), a connecting protrusion (17) is provided at a position close to the casing (1) of the baffle (16), and the connecting protrusions (17) are connected by a second bolt (18), and a groove (19) is provided at a position close to the inner wall of the casing (1) and the baffle (16), and a bearing (20) is sleeved in the groove (19), and the bearing (20) is located at the outer side of the rotating plate (6); A contact plate (21) is arranged on the inner side of the rotating plate (6); an adjusting stud (11) is arranged on one side of the top end of the side plate (2) through a threaded groove (10); a shaft sleeve (12) is sleeved on the outer side of the end of the adjusting stud (11); the shaft sleeve (12) is connected to one side of the top end of the contact plate (21); guide grooves (14) are provided on both sides and one side of the bottom end of the side plate (2); a guide rod (13) is arranged in the guide groove (14); the end of the guide rod (13) is connected to the contact plate (21); and a glass fiber layer (23) is arranged on the outer surface of the contact plate (21).

2. A mechanical arm rotation joint according to claim 1, characterized in that: A fixing seat (4) is fixed to the inner wall of the side plate (2) by means of a first bolt (3); a limiting groove (22) is provided at one end of the fixing seat (4) near the center; a rotating shaft (5) is connected to the inner wall of the rotating plate (6) near the center; an end of the rotating shaft (5) is located in the limiting groove (22); a through groove is provided at one end of the contact plate (21) near the center, and the rotating shaft (5) passes through the through groove.

3. A mechanical arm rotation joint according to claim 1, characterized in that: A sleeve block (15) is provided at one end of the side plate (2) at positions corresponding to the adjustment screw (11) and the guide rod (13).

4. A mechanical arm rotation joint according to claim 1, characterized in that: The end of the rotating plate (6) away from the side plate (2) is respectively connected to a first disc (7) and a second disc (8); one end of the first disc (7) and the second disc (8) are provided with mounting screw holes (9) near the edge.

5. The mechanical arm rotation joint according to claim 1, characterized in that: The outer surfaces of the casing (1), the side plate (2), the rotating plate (6), the first disc (7), the second disc (8) and the baffle (16) are all provided with a corrosion-resistant layer, and the corrosion-resistant layer is made of a polyurethane material.

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