A load bearing trolley

Abstract

The utility model belongs to the field of gyro wheel frame, concretely is a kind of bearing type gyro wheel frame, including base;The middle part of the top surface of base is equipped with sliding slot, the top surface of base and located the side of sliding slot is equipped with two fixed plates of horizontal symmetry distribution, the surface of one of fixed plate is equipped with first motor, the output of first motor is penetrated this fixed plate and is fixedly connected with positive and negative screw rod, another end of positive and negative screw rod is rotatably connected with another fixed plate by bearing;Through the structural design of base, sliding slot, fixed plate, first motor, positive and negative screw rod, first drive plate, second drive plate, sliding block, arc frame, gyro wheel and second motor, realize the flexible adjustment function between the interval of two arc frames, solve the problem that traditional gyro wheel frame is insufficient due to the different specifications of cylindrical workpieces, unstable driving of gyro wheel clamping range, improve the adaptability of device to different diameter workpieces and overall operation stability.

Description

Technical Field

[0001] This utility model relates to the field of roller frames, specifically a load-bearing roller frame. Background Technology

[0002] The roller frame is a welding auxiliary device that drives the cylindrical weldment to rotate through friction between the active roller and the workpiece. It is mainly used for circumferential weld welding, cylinder polishing, and assembly operations in industries such as petrochemicals, pressure vessels, and boilers.

[0003] In the prior art, when the roller frame is in operation, it needs to drive the cylindrical workpiece to rotate. Due to the different models and specifications of the cylindrical workpiece, the contact range between its bottom and the roller is different when it sits on the roller frame. When the cylindrical workpiece is larger, the overall roller clamping range is too small, which leads to overall drive instability. Therefore, a load-bearing roller frame is proposed to address the above problems. Utility Model Content

[0004] To overcome the shortcomings of existing technology, the roller frame needs to drive the cylindrical workpiece to rotate during operation. Due to the different models and specifications of the cylindrical workpieces, the contact range between the bottom of the workpiece and the roller is different when it sits on the roller frame. When the cylindrical workpiece is larger, the overall roller clamping range is too small, which leads to the problem of unstable overall drive. This utility model proposes a load-bearing roller frame.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A load-bearing roller frame of this utility model includes a base; a groove is provided in the middle of the top surface of the base; two fixing plates are arranged horizontally and symmetrically on the top surface of the base and on one side of the groove; a first motor is provided on the surface of one of the fixing plates; the output end of the first motor passes through the fixing plate and is fixedly connected to a positive and negative threaded rod; the other end of the positive and negative threaded rod is rotatably connected to the other fixing plate through a bearing; a first drive plate is provided on one side of the surface of the positive and negative threaded rod; a second drive plate is provided on the other side of the surface of the positive and negative threaded rod; a slider that slides with the groove is provided at the bottom of both the first drive plate and the second drive plate; an arc-shaped frame is provided on the top surface of both the first drive plate and the second drive plate; the two arc-shaped frames are distributed opposite to each other; a roller is provided inside each arc-shaped frame; and a second motor for driving the roller is provided on the side of each arc-shaped frame.

[0006] Preferably, there are multiple rollers, which are respectively disposed at the top and bottom inside the arc-shaped frame.

[0007] Preferably, the first drive plate and the second drive plate can move in opposite directions or in opposite directions by rotating the positive and negative threaded rods.

[0008] Preferably, the slider is adapted to the groove to guide the movement direction of the first drive plate and the second drive plate.

[0009] Preferably, the second motor on each arc frame independently drives the corresponding roller to rotate.

[0010] Preferably, the positive and negative threaded rods are rotatably connected to the fixed plate through bearings, and provide driving force for the first drive plate and the second drive plate.

[0011] The advantages of this utility model are: 1. This utility model, through the structural design of a base, slide groove, fixing plate, first motor, positive and negative threaded rods, first drive plate, second drive plate, slider, arc frame, roller, and second motor, realizes the flexible adjustment function of the distance between two arc frames. It solves the problem of insufficient roller clamping range and unstable drive caused by different specifications of cylindrical workpieces in traditional roller frames. It improves the adaptability of the device to workpieces of different diameters and the overall operational stability. The first motor drives the positive and negative threaded rod to rotate, which drives the first drive plate and the second drive plate to move in opposite directions along the slide groove, thereby synchronously adjusting the relative position of the two arc frames. This ensures that the roller can always maintain a suitable contact range and clamping angle with the workpiece surface, enhancing the reliability of transmission and the uniformity of load bearing. 2. This utility model achieves multi-point and independent driving function for the workpiece by setting multiple rollers inside each arc frame and independently configuring a second motor on its side. It solves the problem of easy slippage or uneven force when driven by a single roller, improves the stability and control accuracy of the workpiece rotation, and the rollers evenly distributed at the top and bottom increase the contact area with the workpiece. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the arc-shaped frame structure of this utility model; Figure 3 This is a schematic diagram of the base structure of this utility model; Figure 4 For the present utility model Figure 2 Enlarged view of the structure at point A in the middle.

[0014] In the diagram: 1. Base; 2. Slide; 3. Fixing plate; 4. First motor; 5. Positive and negative threaded rod; 6. First drive plate; 7. Second drive plate; 8. Slider; 9. Arc frame; 10. Roller; 11. Second motor. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0016] Please see Figures 1-4 As shown, a load-bearing roller frame includes a base 1; a groove 2 is provided in the middle of the top surface of the base 1, and two fixing plates 3 are arranged horizontally and symmetrically on the top surface of the base 1 and on one side of the groove 2. A first motor 4 is provided on the surface of one of the fixing plates 3, and the output end of the first motor 4 passes through the fixing plate 3 and is fixedly connected to a positive and negative threaded rod 5. The other end of the positive and negative threaded rod 5 is rotatably connected to the other fixing plate 3 through a bearing. A first drive plate 6 is provided on one side of the surface of the positive and negative threaded rod 5, and a second drive plate 7 is provided on the other side of the surface of the positive and negative threaded rod 5. A slider 8 that slides in the groove 2 is provided at the bottom of both the first drive plate 6 and the second drive plate 7. An arc frame 9 is provided on the top surface of both the first drive plate 6 and the second drive plate 7. The two arc frames 9 are distributed opposite to each other. A roller 10 is provided inside each arc frame 9, and a second motor 11 for driving the roller 10 is provided on the side of each arc frame 9. During operation, the first motor 4 drives the positive and negative threaded rods 5 to rotate. Since the threads at both ends of the positive and negative threaded rods 5 rotate in opposite directions, they can synchronously drive the first drive plate 6 and the second drive plate 7 to move towards or away from each other along the slide groove 2, thereby adjusting the distance between the two arc-shaped frames 9 to accommodate cylindrical workpieces of different diameters. After the workpiece is placed on the roller 10, the second motor 11 drives the roller 10 to rotate, which in turn drives the workpiece to rotate. This structure, through the cooperation of the positive and negative threaded rods 5 and the slide groove 2 of the slider 8, realizes the synchronous, precise, and stable adjustment of the distance between the two arc-shaped frames 9, effectively expanding the applicability of the device, solving the problem of insufficient clamping of the roller 10 due to changes in the diameter of the workpiece, and improving the stability of load bearing and driving.

[0017] Furthermore, there are multiple rollers 10, which are respectively located at the top and bottom inside the arc-shaped frame 9; During operation, multiple rollers 10 are arranged on the inner arc surface of each arc frame 9. When the workpiece is placed on it, it can contact the workpiece surface from both above and below at the same time. The multiple rollers 10 set at the top and bottom increase the contact area and wrap angle with the workpiece, making the force more uniform, improving the load-bearing capacity and driving effect, and effectively preventing the workpiece from slipping or moving.

[0018] Furthermore, the first drive plate 6 and the second drive plate 7 can move towards or away from each other by rotating the positive and negative threaded rods 5. During operation, when the positive and negative threaded rod 5 rotates, the first drive plate 6 and the second drive plate 7 move inward or outward simultaneously due to the opposite direction of the thread. This design ensures that the two arc-shaped frames 9 always move synchronously and symmetrically, making the adjustment process efficient and smooth, ensuring that the center position of the workpiece does not shift, and improving centering and ease of operation.

[0019] Furthermore, the slider 8 is adapted to the slide groove 2 to guide the movement direction of the first drive plate 6 and the second drive plate 7; During operation, the slider 8 at the bottom of the drive plate is nested in the groove 2 of the base 1. When moving, it slides along the trajectory defined by the groove 2. The cooperation between the slider 8 and the groove 2 provides precise guidance and stable support for the movement of the drive plate, preventing skewing or jamming during the adjustment process, and ensuring the linearity and reliability of the mechanism's movement.

[0020] Furthermore, the second motor 11 on each arc frame 9 independently drives the corresponding roller 10 to rotate; During operation, the second motor 11 on each side of the arc frame 9 can be independently controlled to drive the roller 10 of the main body to rotate. The independently driven second motor 11 allows for separate or coordinated control of the rotation speed of the rollers 10 on both sides, which is highly flexible and can adjust the rotation state of the workpiece according to process requirements, making it more applicable.

[0021] Furthermore, the positive and negative threaded rod 5 is rotatably connected to the fixed plate 3 through bearings, and provides driving force for the first drive plate 6 and the second drive plate 7; During operation, one end of the positive and negative threaded rod 5 is driven by the first motor 4, and the other end is supported on the fixed plate 3 by a bearing. It rotates smoothly to drive the drive plate to move. The bearing connection ensures that the positive and negative threaded rod 5 rotates smoothly with low resistance, provides sufficient driving torque, makes the spacing adjustment effortless and accurate, and improves transmission efficiency and service life.

[0022] Working principle: The first motor 4 drives the positive and negative threaded rod 5 to rotate. The positive and negative threads drive the first drive plate 6 and the second drive plate 7 to move synchronously in opposite directions along the slide groove 2, thereby adjusting the distance between the two arc-shaped frames 9 to accommodate workpieces of different diameters. After the workpiece is placed, the second motor 11 drives the roller 10 to rotate, which in turn drives the workpiece to rotate and complete the processing operation.

[0023] The above description is merely 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, or similar improvements made within the theoretical and principle content of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A load-bearing roller frame, characterized in that: Includes a base (1); a groove (2) is provided in the middle of the top surface of the base (1), and two fixing plates (3) are arranged horizontally and symmetrically on the top surface of the base (1) and on one side of the groove (2). A first motor (4) is provided on the surface of one of the fixing plates (3), and the output end of the first motor (4) passes through the fixing plate (3) and is fixedly connected to a positive and negative thread rod (5). The other end of the positive and negative thread rod (5) is rotatably connected to the other fixing plate (3) through a bearing. A first drive plate (6) is provided on one side of the surface of the positive and negative thread rod (5), and a second drive plate (7) is provided on the other side of the surface of the positive and negative thread rod (5). The bottom of the first drive plate (6) and the second drive plate (7) are provided with sliders (8) that slide in cooperation with the slide groove (2). The top surface of the first drive plate (6) and the second drive plate (7) are provided with arc-shaped frames (9). The two arc-shaped frames (9) are distributed in opposite directions. Each arc-shaped frame (9) is provided with a roller (10) inside. Each arc-shaped frame (9) is provided with a second motor (11) for driving the roller (10) on its side.

2. The load-bearing roller frame according to claim 1, characterized in that: The number of rollers (10) is multiple, and they are respectively located at the top and bottom inside the arc frame (9).

3. The load-bearing roller frame according to claim 1, characterized in that: The first drive plate (6) and the second drive plate (7) can move toward each other or in opposite directions by rotating the positive and negative threaded rods (5).

4. A load-bearing roller frame according to claim 1, characterized in that: The slider (8) is adapted to the groove (2) to guide the movement direction of the first drive plate (6) and the second drive plate (7).

5. A load-bearing roller frame according to claim 1, characterized in that: The second motor (11) on each arc frame (9) independently drives the corresponding roller (10) to rotate.

6. A load-bearing roller frame according to claim 1, characterized in that: The positive and negative threaded rod (5) is rotatably connected to the fixed plate (3) through the bearing, and provides driving force for the first drive plate (6) and the second drive plate (7).

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