Guide wheel assembly for overhead rail type robot

Abstract

The utility model discloses a guide wheel assembly for an overhead rail type robot, which comprises a robot and a guide assembly, the guide assembly comprises a guide wheel and a guide rail, the cross section of the guide rail is I-shaped, the guide wheel comprises a U-shaped main frame, a connecting piece is arranged in the middle of the U-shaped main frame and is used for installing the robot, and the connecting piece is used for connecting the guide wheel and the guide rail. The inner side of the U-shaped main frame is rotatably provided with a main wheel through a first rotating shaft, the main wheel is arranged in a web groove of the guide rail, the guide wheel further comprises an auxiliary wheel, the auxiliary wheel is arranged on the U-shaped main frame through an elastic piece, and the auxiliary wheel elastically presses the side edge of the guide rail in a rolling mode. When the guide rail is slightly deformed due to load change, long-term use or external environment factors, the main wheel and the auxiliary wheel can be adaptively adjusted according to the actual shape of the guide rail due to the arrangement of the elastic floating distance, so that the contact surface of the guide assembly is always kept stable, and the service life of the guide assembly is prolonged. And the guide error caused by the deformation of the guide rail is effectively reduced.

Description

Technical Field

[0001] This utility model belongs to the technical field of auxiliary components for suspended robots, and particularly relates to a guide wheel assembly for suspended robots. Background Technology

[0002] Overhead rail robots are widely used in modern automated production lines, especially excelling in material handling, assembly, and other high-precision operations. Overhead rail robots move along tracks via guide components, the performance of which directly affects the robot's stability, operational accuracy, and lifespan. Existing overhead rail robot guide components typically include guide rails and guide wheels; the fit between the guide wheels and guide rails is crucial for ensuring smooth robot operation.

[0003] However, existing guiding components have some drawbacks in practical applications. Firstly, the guide rail may deform over prolonged use, especially under external forces or load changes. Slight variations in the guide rail's geometry can affect the normal operation of the guide wheels. Secondly, traditional guiding components rely on close contact between the guide wheels and the guide rail. If the fit between the guide wheels and the guide rail is not precise enough, or if the guide rail deforms, it can lead to inaccurate guidance, increased friction, unstable movement, or even jamming or derailment, thus affecting the overall efficiency and stability of the robot system.

[0004] Therefore, a new guide component design is needed to effectively address guidance problems caused by guide rail deformation and mismatch between guide wheels and guide rails, thereby improving the adaptability, stability, and service life of overhead rail robots in different working environments. Utility Model Content

[0005] This utility model addresses the problems in the prior art by proposing the following technical solution:

[0006] A guide wheel assembly for a rail-mounted robot includes a robot and a guide assembly. The guide assembly includes a guide wheel and a guide rail. The guide rail has an "I" shaped cross-section. The guide wheel includes a U-shaped main frame. A connector is provided in the middle of the U-shaped main frame for robot mounting. A main wheel is rotatably mounted on the inner side of the U-shaped main frame via a first rotating shaft and placed in the groove of the guide rail.

[0007] The guide wheel also includes an auxiliary wheel, which is mounted on the U-shaped main frame by an elastic element, and the auxiliary wheel rolls elastically against the side edge of the guide rail.

[0008] As a preferred embodiment of the above technical solution, the height of the groove in the guide rail is greater than the diameter of the main wheel.

[0009] As the preferred technical scheme of the above, the elastic member comprises a claw frame fixedly installed on the outer side wall of the U-shaped main frame, and a claw end of the claw frame is rotatably installed with a movable plate through a second rotating shaft;

[0010] The middle part of the claw frame is fixedly inserted with a fixed rod in a through manner, a spring sheet is sleeved on the periphery of the fixed rod, one end of the movable plate is penetrated by the fixed rod and abuts against the spring sheet, the other end is fixedly installed with a third rotating shaft, and the auxiliary wheel is rotatably sleeved on the third rotating shaft.

[0011] As the preferred technical scheme of the above, the end of the movable plate away from the third rotating shaft is provided with a penetrating hole, and a redundant gap exists between the inner wall of the penetrating hole and the fixed rod;

[0012] The movable plate takes the second rotating shaft as the axis and the redundant gap as the floating amount, so that the horizontal floating distance, i.e. the floating interval, of the auxiliary wheel is generated.

[0013] As the preferred technical scheme of the above, the main wheel is placed in the guide rail, and the depth of the abdominal groove is greater than the elastic floating interval of the auxiliary wheel.

[0014] As the preferred technical scheme of the above, the two ends of the fixed rod are provided with limiting blocks, and the diameter of the limiting block is greater than the inner diameter of the penetrating hole.

[0015] The beneficial effects of the utility model are:

[0016] 1. The utility model adopts an elastic self-adjusting design, wherein the main wheel rolls in the abdominal groove of the guide rail, and the auxiliary wheel is elastically pressed on the side edge of the guide rail. In this way, when the guide rail is slightly deformed due to load changes, long-term use or external environmental factors, the main wheel and the auxiliary wheel can be self-adaptively adjusted according to the actual shape of the guide rail due to the setting of the elastic floating interval, so as to ensure that the contact surface of the guide assembly always remains stable, and the guide error caused by the deformation of the guide rail is effectively reduced.

[0017] 2. The combination design of the main wheel, the auxiliary wheel and the "I-shaped" guide rail is simple and efficient, which not only improves the running stability, but also reduces the manufacturing and maintenance costs. Compared with the traditional complex guide system, the structure is more simple, and the installation and debugging are more convenient. Moreover, the adaptability is strong, which can effectively cope with different load conditions, guide rail deformation and complex working environments. Whether in high load, complex path or in the working condition with large environmental changes, the overhead rail robot can stably run and provide a wider application scenario. BRIEF DESCRIPTION OF DRAWINGS

[0018] Fig. 1 A combined overall view of a guide wheel assembly for an overhead rail robot in an embodiment is shown.

[0019] Fig. 2The diagram shown is a front view of the guide wheel structure in a guide wheel assembly for a suspended robot according to an embodiment;

[0020] Fig. 3 The diagram shown is a three-dimensional structural diagram of the guide wheel in a guide wheel assembly for a suspended robot according to an embodiment.

[0021] In the diagram: 10, Robot; 20, Guide assembly; 21, Guide wheel; 22, Guide rail; 210, Auxiliary wheel; 211, U-shaped main frame; 212, First rotating shaft; 213, Main wheel; 214, Claw frame; 215, Movable plate; 216, Second rotating shaft; 217, Fixed rod; 218, Spring plate; 219, Third rotating shaft; 2111, Connector. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments.

[0023] Example

[0024] like Figs. 1-3 As shown, a guide wheel assembly for a suspended robot includes a robot 10 and a guide assembly 20. The guide assembly 20 includes a guide wheel 21 and a guide rail 22. The guide rail 22 has an "I" shaped cross-section. The guide wheel 21 includes a U-shaped main frame 211. A connector 2111 is provided in the middle of the U-shaped main frame 211 for mounting the robot 10. A main wheel 213 is rotatably mounted on the inner side of the U-shaped main frame 211 through a first rotating shaft 212. Under the gravity of the robot 10 and the guide wheel 21, the main wheel 213 rolls at the bottom of the groove of the guide rail 22. The design that the height of the groove of the guide rail 22 is greater than the diameter of the main wheel 213 ensures that even if the guide rail 22 undergoes a small deformation, it will not get stuck.

[0025] The guide wheel 21 also includes an auxiliary wheel 210, which is mounted on the U-shaped main frame 211 by an elastic element, and the auxiliary wheel 210 rolls elastically against the side edge of the guide rail 22.

[0026] The elastic element includes a claw frame 214 fixedly installed on the outer wall of the U-shaped main frame 211, and a movable plate 215 is rotatably installed on the claw end of the claw frame 214 via a second rotating shaft 216;

[0027] A fixed rod 217 is inserted through the middle of the claw frame 214. A spring plate 218 is sleeved around the fixed rod 217. One end of the movable plate 215 is penetrated by the fixed rod 217 and abuts against the spring plate 218. The other end is fixedly installed with a third rotating shaft 219, and the auxiliary wheel 210 is rotatably sleeved on the third rotating shaft 219.

[0028] The through hole is provided at an end of the movable plate 215 away from the third rotating shaft 219, and a redundant gap exists between the inner wall of the through hole and the fixed rod 217.

[0029] The movable plate 215 is pivoted at the second rotating shaft 216 and has a floating amount of the redundant gap, so that the horizontal floating distance of the auxiliary wheel 210, i.e., the floating gap, is generated.

[0030] Under the elastic action of the spring sheet 218 in the elastic member, the auxiliary wheel 210 is elastically pressed against the side edge of the guide rail in a rolling manner and has a certain floating gap, so that, when the guide rail is slightly deformed due to load change, long-term use or external environmental factors, the main wheel 213 and the auxiliary wheel 210 can be self-adaptively adjusted according to the actual shape of the guide rail, so as to ensure that the contact surface of the guide assembly is always stable and the guide error caused by the deformation of the guide rail is effectively reduced.

[0031] The depth of the abdominal groove of the main wheel 213 is greater than the elastic floating gap of the auxiliary wheel 210, so that the main wheel 213 is prevented from being separated from the abdominal groove of the guide rail 22.

[0032] The two ends of the fixed rod 217 are provided with limiting blocks, and the diameter of the limiting blocks is greater than the inner diameter of the through hole. By providing the limiting blocks, the end of the movable plate 215 away from the third rotating shaft 219 is prevented from being separated from the fixed rod 217, so that the spring sheet 218 is always elastically pressed against the movable plate 215.

[0033] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application.

Claims

1. A guide wheel assembly for an overhead track robot, comprising a robot (10) and a guide assembly (20), the guide assembly (20) comprising a guide wheel (21) and a guide track (22), characterized in that, The guide rail (22) has an "I" shaped cross section. The guide wheel (21) includes a U-shaped main frame (211). A connector (2111) is provided in the middle of the U-shaped main frame (211) for the installation of the robot (10). The main wheel (213) is rotatably installed on the inner side of the U-shaped main frame (211) through the first rotating shaft (212) and placed in the groove of the guide rail (22). The guide wheel (21) also includes an auxiliary wheel (210), which is mounted on the U-shaped main frame (211) by an elastic element, and the auxiliary wheel (210) rolls elastically against the side edge of the guide rail (22).

2. The guide wheel assembly for an overhead track robot of claim 1, wherein, The height of the groove in the guide rail (22) is greater than the diameter of the main wheel (213).

3. The guide wheel assembly for an overhead track robot of claim 1, wherein, The elastic element includes a claw frame (214) fixedly installed on the outer wall of the U-shaped main frame (211), and the claw end of the claw frame (214) is rotatably mounted with a movable plate (215) via a second rotating shaft (216); A fixed rod (217) is fixedly inserted through the middle of the claw frame (214). A spring plate (218) is sleeved around the fixed rod (217). One end of the movable plate (215) is penetrated by the fixed rod (217) and abuts against the spring plate (218). The other end is fixedly installed with a third rotating shaft (219), and the auxiliary wheel (210) is rotatably sleeved on the third rotating shaft (219).

4. The guide wheel assembly for an overhead track robot of claim 3, wherein, The movable plate (215) has a through hole at one end away from the third rotating shaft (219), and there is a redundant gap between the inner wall of the through hole and the fixed rod (217); The movable plate (215) is centered on the second rotating shaft (216) and floats with a redundant gap, thereby causing the auxiliary wheel (210) to float horizontally, i.e., float distance.

5. The guide wheel assembly for an overhead track robot of claim 4, wherein, The main wheel (213) is placed in a groove on the guide rail (22) with a depth greater than the floating distance of the auxiliary wheel (210).

6. The guide wheel assembly for an overhead trolley robot of claim 4, wherein, The fixed rod (217) is provided with limit blocks at both ends, and the diameter of the limit blocks is larger than the inner diameter of the through hole.

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