Mechanical arm capable of preventing loosening and falling

Abstract

The utility model provides an anti-loosing and anti-dropping mechanical arm, which comprises a mechanical arm body and a connecting frame fixed at the moving end of the mechanical arm body, a plurality of groups of clamping components are arranged on the inner side of the connecting frame, each clamping component comprises a clamping plate, an adjusting rod and a sliding plate II, and the sliding plate II is in sliding limit fit with the inner wall of the connecting frame through a guide rod I; an adjusting rod is slidably connected to the inner wall of the second sliding plate, one end of the adjusting rod is fixedly connected with a first connecting rod, the other end of the first connecting rod is fixedly connected with a clamping plate, a second electric push rod is fixed to the inner wall of the connecting frame through a bolt, and the telescopic end of the second electric push rod is fixedly connected with a second guide rod through a coupler; according to the clamping device, the multiple sets of clamping assemblies are arranged, when the sliding stroke of the second sliding plate is not changed, the clamping plate slides along with the second sliding plate, the clamping radius of the clamping plate is changed, and therefore internal shrinkage type clamping and external expansion type clamping can be achieved, and the flexible adaptability of the clamping device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical arms, in particular to a mechanical arm which is prevented from loosening and falling. Background Art

[0002] The robotic arm consists of a main axis and multiple joints. Each joint can rotate or translate relative to the previous joint, which can simulate the movement of the human arm. It has a wide range of applications, including but not limited to manufacturing, aerospace, medical care, and agriculture.

[0003] After searching, the Chinese patent publication number CN218856977U discloses a mechanical arm that prevents loosening and falling, including a mechanical arm body and a connecting shaft and a clamping piece connected at both ends of the mechanical arm body, the mechanical arm body includes a main rod body, the connecting shaft is fixed to one end of the main rod body, and a movable shaft is fixedly connected to the end of the main rod body away from the connecting shaft, movable sleeves are provided on both sides of the movable shaft, and the movable shaft is movably inserted on the movable sleeve, and the top and bottom of the movable shaft are fixedly connected to the top and bottom of the support plate, and the clamping piece includes clamping claws, and the clamping claws are provided with two and are symmetrically arranged with each other. Clamping grooves are opened on the sides of the clamping claws that are close to each other, and auxiliary components are provided on the inner walls of the clamping grooves, and a spring group is provided between the parts of the clamping grooves close to the support plate.

[0004] The above patent has the following shortcomings: it uses two electric push rods to drive the two clamping claws to move relative to each other, thereby clamping the object, but it cannot switch the clamping radius, resulting in a limited scope of use.

[0005] Therefore, a mechanical arm which can prevent loosening and falling is proposed. Utility Model Content

[0006] In view of this, the embodiments of the present utility model hope to provide a mechanical arm that prevents loosening and falling, so as to solve or alleviate the technical problems existing in the prior art, and at least provide a beneficial option.

[0007] The technical solution of the embodiment of the utility model is achieved as follows: a mechanical arm that prevents loosening and falling, including a mechanical arm body and a connecting frame fixed to the moving end of the mechanical arm body, multiple groups of clamping components are arranged on the inner side of the connecting frame, the clamping components include a clamping plate, an adjusting rod and a second slide plate, the second slide plate is slidably limited and matched with the inner wall of the connecting frame through a guide rod one, the adjusting rod is slidably connected to the inner wall of the second slide plate, and one end of the adjusting rod is fixedly connected to a connecting rod one, and the other end of the connecting rod one is fixedly connected to the clamping plate.

[0008] In some embodiments, the inner wall of the connecting frame is fixed with a second electric push rod by bolts, and the telescopic end of the second electric push rod is fixedly connected with a second guide rod by a coupling.

[0009] In some embodiments, the outer wall of the other end of the guide rod 2 is fixedly connected to a plurality of connecting ears 1, and a side wall of the connecting ear is rotatably connected to a connecting rod 2 via an axis 1.

[0010] In some embodiments, the other end of the second connecting rod is rotatably connected to a second connecting ear via a second shaft, and the second connecting ear is fixedly connected to the outer wall of the second slide plate.

[0011] In some embodiments, an electric push rod 1 is fixed to the inner wall of the connecting frame by bolts, and a connecting plate is fixedly connected to the telescopic end of the electric push rod 1.

[0012] In some embodiments, a plurality of slide grooves are provided on the inner wall of the connecting plate, and a slide plate 1 is provided to slide the inner wall of the slide groove.

[0013] In some embodiments, a spiral groove is formed on an inner wall of the slide plate, and a limiting column is fixedly connected to an outer wall of the adjustment rod, and the limiting column is movably limited and fitted in the spiral groove.

[0014] In some embodiments, an anti-slip pad is fixedly connected to the outer surface of the clamping plate.

[0015] The embodiment of the utility model has the following advantages due to the adoption of the above technical solution:

[0016] 1. A mechanical arm that prevents loosening and falling is provided with multiple groups of clamping components. When the sliding stroke of the second slide plate remains unchanged, the clamping plate slides with the second slide plate, so that the clamping radius of the clamping plate changes, thereby realizing both inward-contracting clamping and outward-expanding clamping, thereby improving the flexibility and adaptability of the device.

[0017] 2. A mechanical arm that prevents loosening and falling, by setting a guide rod 2 and a connecting rod 2, using an electric push rod 2 to drive the guide rod 2 to rise and fall, and cooperating with the connecting rod 2 to drive multiple slides 2 to slide simultaneously, thereby ensuring the synchronization of the movement of the clamping plate and the accuracy and stability of the clamping.

[0018] 3. A mechanical arm that prevents loosening and falling is provided with a spiral groove and a limit column. When an electric push rod drives the connecting plate to rise and fall, the cooperation of the spiral groove and the limit column can drive the adjusting rod to rotate, thereby realizing the synchronous rotation of multiple clamping plates with consistent rotation angles.

[0019] The above summary is for the purpose of description only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the utility model will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or technical descriptions will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is the main structural diagram of the utility model;

[0022] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0023] Figure 3 It is a partial structural schematic diagram of the utility model;

[0024] Figure 4 It is a schematic diagram of the connection between the adjusting rod and the slide plate of the utility model.

[0025] Reference numerals:

[0026] 1. Connecting frame; 2. Clamping assembly; 3. Clamping plate; 4. Connecting rod 1; 5. Adjusting rod; 6. Guide rod 1; 7. Slide plate 1; 8. Connecting plate; 9. Electric push rod 1; 10. Electric push rod 2; 11. Guide rod 2; 12. Connecting ear 1; 13. Shaft 1; 14. Connecting rod 2; 15. Shaft 2; 16. Connecting ear 2; 17. Slide groove; 18. Spiral groove; 19. Limiting column; 20. Slide plate 2. DETAILED DESCRIPTION

[0027] In the following, only some exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0028] In the present utility model, unless otherwise clearly stipulated and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0029] The embodiments of the present utility model are described in detail below with reference to the accompanying drawings.

[0030] Embodiment 1:

[0031] like Figure 1-4 As shown, a mechanical arm that prevents loosening and falling includes a mechanical arm body and a connecting frame 1 fixed to the moving end of the mechanical arm body.

[0032] A plurality of clamping assemblies 2 are arranged on the inner side of the connecting frame 1, and the clamping assemblies 2 include a clamping plate 3, an adjusting rod 5 and a slide plate 20. The slide plate 20 is slidably limited and matched with the inner wall of the connecting frame 1 through a guide rod 6. The adjusting rod 5 is slidably connected to the inner wall of the slide plate 20, and one end of the adjusting rod 5 is fixedly connected to a connecting rod 4, and the other end of the connecting rod 4 is fixedly connected to the clamping plate 3.

[0033] When the sliding stroke of the slide plate 20 remains unchanged, the clamping radius of the clamping plate 3 will change, so that objects of different sizes can be clamped, and both inward-contracting clamping and outward-expanding clamping can be achieved.

[0034] The device is provided with multiple groups of clamping components 2. When the sliding stroke of the slide plate 20 remains unchanged, the clamping plate 3 slides with the slide plate 20, so that the clamping radius of the clamping plate 3 changes, thereby realizing both inward-contracting clamping and outward-expanding clamping, thereby improving the flexibility and adaptability of the device.

[0035] In this embodiment, an electric push rod 10 is fixed to the inner wall of the connecting frame 1 by bolts, and a guide rod 11 is fixedly connected to the telescopic end of the electric push rod 10 by a coupling.

[0036] The outer wall of the other end of the guide rod 11 is fixedly connected with a plurality of connecting ears 12, and the side wall of the connecting ear 12 is rotatably connected with a connecting rod 14 via an axis 13, and the other end of the connecting rod 14 is rotatably connected with a connecting ear 16 via an axis 15, and the connecting ear 16 is fixedly connected to the outer wall of the slide plate 20.

[0037] The electric push rod 2 10 is started to drive the guide rod 2 11 to move up and down, and the plurality of connecting rods 2 14 can be cooperated to drive the plurality of slide plates 2 20 to slide simultaneously, thereby changing the clamping radius of the clamping plate 3 .

[0038] The device is provided with a guide rod 11 and a connecting rod 14, and uses an electric push rod 10 to drive the guide rod 11 to rise and fall, and cooperates with the connecting rod 14 to drive multiple slide plates 20 to slide simultaneously, thereby ensuring the synchronization of the movement of the clamping plate 3 and the accuracy and stability of the clamping.

[0039] Embodiment 2:

[0040] A mechanical arm that prevents loosening and falling, this embodiment makes the following improvements on the basis of embodiment 1, such as Figure 2-4 As shown:

[0041] An electric push rod 9 is fixed to the inner wall of the connecting frame 1 by bolts, and a connecting plate 8 is fixedly connected to the telescopic end of the electric push rod 9.

[0042] The inner wall of the connecting plate 8 is provided with a plurality of slide grooves 17 , and the inner wall of the slide groove 17 is slidably limited with a slide plate 7 .

[0043] The inner wall of the slide plate 7 is provided with a spiral groove 18 , and the outer wall of the adjusting rod 5 is fixedly connected to a limiting column 19 , and the limiting column 19 is movably limited and fitted in the spiral groove 18 .

[0044] In this embodiment: the electric push rod 9 is started to drive the connecting plate 8 to rise and fall, and the adjusting rod 5 is rotated under the cooperation of the spiral groove 18 and the limit column 19, thereby driving the clamping plate 3 to rotate and changing its clamping radius.

[0045] The device is provided with a spiral groove 18 and a limit column 19. When the electric push rod 9 drives the connecting plate 8 to rise and fall, the spiral groove 18 and the limit column 19 cooperate to drive the adjusting rod 5 to rotate, thereby realizing the synchronous rotation of multiple clamping plates 3 with the same rotation angle.

[0046] Embodiment 3:

[0047] A mechanical arm that prevents loosening and falling, this embodiment makes the following improvements on the basis of embodiments 1 and 2, such as Figure 1-4 As shown:

[0048] The outer surface of the clamping plate 3 is fixedly connected with an anti-skid pad. An anti-skid sleeve is arranged on the outer surface of the clamping plate 3 to improve the clamping stability and prevent the items from loosening and falling and causing damage.

[0049] Working principle: When the device is in use, the mechanical arm body is used to drive the connecting frame 1 to approach the object to be clamped, and then the electric push rod 19 is started to drive the connecting plate 8 to rise and fall according to the radius of the object, and the spiral groove 18 and the limit column 19 are used to cooperate to drive the adjusting rod 5 to rotate, so as to use the adjusting rod 5 to drive the clamping plate 3 to rotate and change the clamping radius of the clamping plate 3. Then, the retracted clamping or the outward expansion clamping is selected according to the needs. Take the outward expansion clamping as an example: place the object on the inner side of the clamping plate 3, and then start the electric push rod 2 10 to drive the guide rod 2 11 to rise, and the connecting rod 2 14 drives the slide plate 1 7 and the slide plate 2 20 to slide inward at the same time, driving the clamping plate 3 to move and contact the object and maintain a certain pressure, so that the object can be clamped.

[0050] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of various changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A mechanical arm that is prevented from loosening and falling, comprising a mechanical arm body and a connecting frame (1) fixed to a moving end of the mechanical arm body, characterized in that: A plurality of clamping assemblies (2) are arranged on the inner side of the connecting frame (1), the clamping assemblies (2) comprising a clamping plate (3), an adjusting rod (5) and a second slide plate (20), the second slide plate (20) being slidably limited and matched to the inner wall of the connecting frame (1) through a first guide rod (6), the adjusting rod (5) being slidably connected to the inner wall of the second slide plate (20), and one end of the adjusting rod (5) being fixedly connected to a first connecting rod (4), and the other end of the first connecting rod (4) being fixedly connected to the clamping plate (3).

2. The anti-loosening and falling mechanical arm according to claim 1, characterized in that: The inner wall of the connecting frame (1) is fixed with an electric push rod 2 (10) by means of bolts, and the telescopic end of the electric push rod 2 (10) is fixedly connected with a guide rod 2 (11) by means of a coupling.

3. The anti-loosening and falling mechanical arm according to claim 2, characterized in that: The outer wall of the other end of the guide rod 2 (11) is fixedly connected with a plurality of connecting ears 1 (12), and the side wall of the connecting ear 1 (12) is rotatably connected with the connecting rod 2 (14) through the shaft 1 (13).

4. The anti-loosening and falling mechanical arm according to claim 3, characterized in that: The other end of the second connecting rod (14) is rotatably connected to a second connecting ear (16) via a second shaft (15), and the second connecting ear (16) is fixedly connected to the outer wall of the second slide plate (20).

5. The anti-loosening and falling mechanical arm according to claim 1, characterized in that: An electric push rod (9) is fixed to the inner wall of the connecting frame (1) by means of bolts, and a connecting plate (8) is fixedly connected to the telescopic end of the electric push rod (9).

6. The anti-loosening and falling mechanical arm according to claim 5, characterized in that: The inner wall of the connecting plate (8) is provided with a plurality of sliding grooves (17), and the inner wall of the sliding groove (17) is slidingly limited and matched with a slide plate (7).

7. The anti-loosening and falling mechanical arm according to claim 6, characterized in that: The inner wall of the slide plate (7) is provided with a spiral groove (18), the outer wall of the adjusting rod (5) is fixedly connected to a limiting column (19), and the limiting column (19) is movably limited and matched in the spiral groove (18).

8. A mechanical arm that prevents loosening and falling according to any one of claims 1 to 7, characterized in that: An anti-slip pad is fixedly connected to the outer surface of the clamping plate (3).

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