Mechanical arm stand column device
By using a combination of rotating columns, guide rails, linear motors and counterweights in the robotic arm column device, the problem of center of gravity shift when carrying heavy objects is solved, and the center of gravity is automatically adjusted and the force uniformity is achieved. Extends the service life of the bolts and enhances structural strength.
Patent Information
- Application Number
- CN202421238140.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-03
- Publication Date
- 2025-01-17
- Estimated Expiration
- 2034-06-03
AI Technical Summary
When the existing mechanical arm columns carry heavy objects, the center of gravity offset causes uneven force of multiple fastening bolts, which affects the service life.
Design a robotic arm column device, adopting a combination of rotating columns, guide rails, linear motors and counterweight blocks. The linear motor matches the guide rails to keep the counterweight blocks away from the center of the rotating cylinder, offset the center of gravity offset, and passes through the bracket, slide chute and support. The slider is arranged to support the counterweight to adapt to rotation to avoid bending and deforming the rotating column.
It realizes automatic adjustment of the center of gravity when the robot arm is carrying heavy objects, evenly distributes the force, extends the service life of the bolts, and increases the structural strength to avoid bending and deformation of the rotating column.
Smart Images
Figure CN222360222U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of mechanical arms, in particular to a mechanical arm column device. Background Art
[0002] A robotic arm refers to a complex system with high precision, multiple inputs and outputs, high nonlinearity, and strong coupling. Due to its unique operational flexibility, it has been widely used in industrial assembly, safety and explosion-proof and other fields. The robotic arm column usually refers to the base of the robotic arm, and also serves as the first axis, allowing the robotic arm to rotate horizontally or rise and fall.
[0003] The weight of an existing robotic arm is usually borne directly by the robotic arm column. When the robotic arm is used in a handling process, if the material picked up by the robotic arm is heavy, the center of gravity of the robotic arm is close to the material. Although the robotic arm column is fastened to the workbench by bolts to prevent it from tipping over, one side of the robotic arm is subjected to greater pressure, while the other side is subjected to tension, causing multiple bolts used to fasten the robotic arm to be subjected to different forces, affecting the service life of the fastening bolts. Utility Model Content
[0004] Based on this, the purpose of the utility model is to provide a mechanical arm column device to solve the technical problems mentioned in the above background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a robot arm column device, including a device body and a rotating column, the rotating column is connected to a guide rail, and a linear motor is installed inside the guide rail, the output end of the linear motor is connected to a counterweight block, a supporting slider is fixed to the bottom of the rotating column, a bracket is sleeved on the outside of the device body, and a slide groove is fixed to the top of the bracket.
[0006] By adopting the above technical solution, a cavity is formed inside the rotating column. When the robotic arm carries heavy objects, the linear motor cooperates with the guide rail to move the counterweight away from the center of the rotating column and the material, thereby offsetting most of the center of gravity deviation. When the robotic arm puts down the heavy object, the linear motor cooperates with the guide rail to return the counterweight to the center of the rotating column.
[0007] Furthermore, the counterweight block is slidably connected to the rotating column, and the counterweight block is made of lead material.
[0008] By adopting the above technical solution, when the robotic arm carries heavy objects, the linear motor cooperates with the guide rail to move the counterweight away from the center of the rotating column and the material, thereby offsetting most of the center of gravity offset. At this time, the counterweight will move to the top of the supporting slider.
[0009] Furthermore, the slide groove is in a circular ring shape, and the supporting slider is in an arc shape, and the supporting slider is slidably connected to the slide groove.
[0010] By adopting the above technical solution, the support slider is supported by the bracket and the slide groove, and the support slider supports the bottom side of the rotating column, and the sliding connection between the support slider and the slide groove can adapt to the rotation of the rotating column.
[0011] Furthermore, a rotating motor is installed on one side of the top of the device body, and a rotating column passes through the top of the device body, and bevel gears are connected to the output end of the rotating motor and the outside of the rotating column, a conductive slip ring is installed at the bottom of the rotating column, and multiple first bolts pass through the bottom of the device body.
[0012] By adopting the above technical solution, the staff installs the device body on the workbench through the first bolt, and the mechanical arm is installed on the top of the rotating column, and the end of the mechanical arm faces to the right, away from the cover plate, and above the motor. After the rotating motor is started, the rotating column is driven to rotate through the engagement of two bevel gears, thereby driving the mechanical arm on the top of the rotating column to rotate.
[0013] Furthermore, the rotating column is rotatably connected to the device body.
[0014] By adopting the above technical solution, after the rotating motor is started, the two bevel gears are engaged to drive the rotating column to rotate, thereby driving the mechanical arm on the top of the rotating column to rotate.
[0015] Furthermore, a cover plate is connected to one side of the rotating column, and a second bolt penetrates one side of the cover plate.
[0016] By adopting the above technical solution, the counterweight block is blocked by the cover plate to prevent the linear motor and the counterweight block from directly sliding out and falling off, and the cover plate is prevented from falling off by the second bolt.
[0017] Furthermore, four second bolts are provided, and the four second bolts are distributed in a rectangular array, and the cover plate is detachably connected to the rotating column through the second bolts.
[0018] By adopting the above technical solution, when other batches of materials need to be transported, the staff can remove the second bolt to disassemble the cover plate. After the cover plate is removed, the linear motor and the counterweight block can be taken out and replaced with counterweight blocks of other weights.
[0019] Furthermore, four protrusions are provided on one side of the rotating column.
[0020] By adopting the above technical solution, the distance between the cover plate and the rotating column is increased to adapt to the size difference between the linear motor and the counterweight block.
[0021] In summary, the utility model mainly has the following beneficial effects:
[0022] 1. The utility model hollows out a cavity inside the rotating column through the arrangement of a rotating column, a guide rail, a linear motor and a counterweight. When the robot arm carries a heavy object, the linear motor cooperates with the guide rail to move the counterweight away from the center of the rotating column and the material, thereby offsetting most of the deviation of the center of gravity. When the robot arm puts down the heavy object, the linear motor cooperates with the guide rail to return the counterweight to the center of the rotating column; the counterweight position is automatically adjusted to adjust the center of gravity, thereby offsetting part of the deviation of the center of gravity when picking up the material, so that the force of multiple first bolts is more uniform to extend the service life;
[0023] 2. The utility model is provided with a bracket, a slide groove and a support slider. When the robot arm picks up heavy objects, the counterweight block will move to the top of the support slider. The support slider is supported by the bracket and the slide groove, and the support slider supports the bottom side of the rotating column. The sliding connection between the support slider and the slide groove can adapt to the rotation of the rotating column, thereby avoiding the phenomenon that one side of the rotating column is bent and deformed due to the gravity of the counterweight block; and increasing the structural strength. BRIEF DESCRIPTION OF THE DRAWINGS
[0024] Figure 1 It is a structural schematic diagram of the utility model;
[0025] Figure 2 This is a schematic diagram of the structure of the counterweight block of the utility model;
[0026] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;
[0027] Figure 4 It is a schematic diagram of the explosion structure of the utility model.
[0028] In the figure: 1. Device body; 2. First bolt; 3. Rotating column; 4. Cover plate; 5. Second bolt; 6. Bracket; 7. Slide groove; 8. Guide rail; 9. Linear motor; 10. Counterweight; 11. Support slider; 12. Rotating motor; 13. Bevel gear; 14. Conductive slip ring. DETAILED DESCRIPTION
[0029] 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. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.
[0030] The following describes an embodiment of the utility model based on its overall structure.
[0031] Embodiment 1:
[0032] A mechanical arm column device, such as Figure 1-Figure 4As shown, it includes a device body 1 and a rotating column 3, the rotating column 3 is connected with a guide rail 8, the guide rail 8 is installed inside the guide rail 8, the output end of the linear motor 9 is connected with a counterweight 10, the counterweight 10 is slidably connected to the rotating column 3, the linear motor 9 cooperates with the guide rail 8 to make the counterweight 10 away from the center of the rotating column 3 and the material, thereby offsetting most of the center of gravity offset; the counterweight 10 is made of lead material, which has a high density and can provide better weight to adjust the center of gravity; a supporting slider 11 is fixed to the bottom of the rotating column 3, and the supporting slider 11 is in an arc shape, the outside of the device body 1 is sleeved with a bracket 6, and a slide groove 7 is fixed on the top of the bracket 6, and the slide groove 7 is in a circular ring shape, and the supporting slider 11 is slidably connected to the slide groove 7 to avoid the phenomenon that the gravity of the counterweight 10 causes one side of the rotating column 3 to bend and deform downward.
[0033] See also Figure 1-Figure 4 In the above embodiment, a rotating motor 12 is installed on one side of the top of the device body 1, a rotating column 3 passes through the top of the device body 1, the rotating column 3 is rotatably connected to the device body 1, and a bevel gear 13 is connected to the output end of the rotating motor 12 and the outside of the rotating column 3. After the rotating motor 12 is started, the rotating column 3 is driven to rotate through the engagement of two bevel gears 13, thereby driving the mechanical arm on the top of the rotating column 3 to rotate; a conductive slip ring 14 is installed at the bottom of the rotating column 3 to prevent the circuit of the mechanical arm from being twisted off by the rotating rotating column 3; a plurality of first bolts 2 pass through the bottom of the device body 1, and the device body 1 is installed on the workbench through the first bolts 2.
[0034] Embodiment 2:
[0035] On the basis of the above-mentioned first embodiment, although the center of gravity can be adjusted by setting the counterweight block 10, different batches of materials may have different weights. Now, by setting the cover plate 4 and the second bolt 5, the counterweight blocks 10 of different weights can be replaced.
[0036] See also Figure 1-Figure 4 In the above embodiment, four protrusions are provided on one side of the rotating column 3, and a cover plate 4 is connected to one side of the protrusion. A second bolt 5 passes through one side of the cover plate 4. Four second bolts 5 are provided, and the four second bolts 5 are distributed in a rectangular array. The cover plate 4 is detachably connected to the rotating column 3 through the second bolts 5. When it is necessary to transport other batches of materials, the staff can remove the second bolts 5 to remove the cover plate 4. After the cover plate 4 is removed, the linear motor 9 and the counterweight 10 can be taken out and replaced with counterweights 10 of other weights.
[0037] The implementation principle of the utility model is as follows: first, the staff installs the device body 1 on the workbench through the first bolt 2, and the mechanical arm is installed on the top of the rotating column 3, and the end of the mechanical arm faces the right side, away from the direction of the cover plate 4, and above the motor;
[0038] When the robot arm carries heavy objects, the linear motor 9 cooperates with the guide rail 8 to make the counterweight 10 move away from the center of the rotating column 3 and the material, thereby offsetting most of the deviation of the center of gravity. At this time, the counterweight 10 will move to the top of the supporting slide 11, and the supporting slide 11 is supported by the bracket 6 and the slide groove 7, while the supporting slide 11 supports the bottom side of the rotating column 3, and the sliding connection between the supporting slide 11 and the slide groove 7 can adapt to the rotation of the rotating column 3, thereby avoiding the phenomenon that the gravity of the counterweight 10 causes one side of the rotating column 3 to bend downward and deform. At the same time, the counterweight 10 is blocked by the cover plate 4 to prevent the linear motor 9 and the counterweight 10 from directly sliding out and falling; when the robot arm puts down the heavy object, the linear motor 9 cooperates with the guide rail 8 to make the counterweight 10 return to the center of the rotating column 3;
[0039] When other batches of materials need to be transported, the staff can remove the second bolt 5 to disassemble the cover plate 4. After the cover plate 4 is removed, the linear motor 9 and the counterweight 10 can be taken out and replaced with counterweights 10 of other weights.
[0040] It should be noted that counterweights 10 of different weights can refer to counterweights made of other materials, or can be counterweights 10 of different sizes. If counterweights 10 of different sizes are used, the following two points need to be noted: First, the counterweight 10 must be able to be connected to the output end of the linear motor 9 to avoid the linear motor 9 being unable to adjust the position of the counterweight 10 to achieve the effect of adjusting the center of gravity; second, the bottom of the counterweight 10 must be in contact with the rotating column 3 to avoid the weight of the counterweight 10 being entirely borne by the linear motor 9, affecting the service life of the linear motor 9, similar to a U-shape.
[0041] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.
Claims
1. A mechanical arm column device, comprising a device body (1) and a rotating column (3), characterized in that: The rotating column (3) is internally connected to a guide rail (8), and a linear motor (9) is installed inside the guide rail (8); a counterweight (10) is connected to the output end of the linear motor (9); a supporting slider (11) is fixed to the bottom of the rotating column (3); a bracket (6) is sleeved on the outside of the device body (1), and a slide groove (7) is fixed to the top of the bracket (6).
2. The mechanical arm column device according to claim 1, characterized in that: The counterweight block (10) is slidably connected to the rotating column (3), and the counterweight block (10) is made of lead material.
3. The mechanical arm column device according to claim 1, characterized in that: The slide groove (7) is in the shape of a ring, and the support slider (11) is in the shape of an arc, and the support slider (11) is slidably connected to the slide groove (7).
4. The mechanical arm column device according to claim 1, characterized in that: A rotating motor (12) is installed on one side of the top of the device body (1), and a rotating column (3) passes through the top of the device body (1), and a bevel gear (13) is connected to the output end of the rotating motor (12) and the outside of the rotating column (3), a conductive slip ring (14) is installed at the bottom of the rotating column (3), and a plurality of first bolts (2) pass through the bottom of the device body (1).
5. The mechanical arm column device according to claim 4, characterized in that: The rotating column (3) is rotatably connected to the device body (1).
6. The mechanical arm column device according to claim 1, characterized in that: One side of the rotating column (3) is connected to a cover plate (4), and one side of the cover plate (4) is penetrated by a second bolt (5).
7. The mechanical arm column device according to claim 6, characterized in that: Four second bolts (5) are provided, and the four second bolts (5) are distributed in a rectangular array. The cover plate (4) is detachably connected to the rotating column (3) via the second bolts (5).
8. The mechanical arm column device according to claim 6, characterized in that: Four protrusions are arranged on one side of the rotating column (3).